Merge branch 'akpm' (incoming from Andrew)

Merge misc patches from Andrew Morton:

 - Florian has vanished so I appear to have become fbdev maintainer
   again :(

 - Joel and Mark are distracted to welcome to the new OCFS2 maintainer

 - The backlight queue

 - Small core kernel changes

 - lib/ updates

 - The rtc queue

 - Various random bits

* akpm: (164 commits)
  rtc: rtc-davinci: use devm_*() functions
  rtc: rtc-max8997: use devm_request_threaded_irq()
  rtc: rtc-max8907: use devm_request_threaded_irq()
  rtc: rtc-da9052: use devm_request_threaded_irq()
  rtc: rtc-wm831x: use devm_request_threaded_irq()
  rtc: rtc-tps80031: use devm_request_threaded_irq()
  rtc: rtc-lp8788: use devm_request_threaded_irq()
  rtc: rtc-coh901331: use devm_clk_get()
  rtc: rtc-vt8500: use devm_*() functions
  rtc: rtc-tps6586x: use devm_request_threaded_irq()
  rtc: rtc-imxdi: use devm_clk_get()
  rtc: rtc-cmos: use dev_warn()/dev_dbg() instead of printk()/pr_debug()
  rtc: rtc-pcf8583: use dev_warn() instead of printk()
  rtc: rtc-sun4v: use pr_warn() instead of printk()
  rtc: rtc-vr41xx: use dev_info() instead of printk()
  rtc: rtc-rs5c313: use pr_err() instead of printk()
  rtc: rtc-at91rm9200: use dev_dbg()/dev_err() instead of printk()/pr_debug()
  rtc: rtc-rs5c372: use dev_dbg()/dev_warn() instead of printk()/pr_debug()
  rtc: rtc-ds2404: use dev_err() instead of printk()
  rtc: rtc-efi: use dev_err()/dev_warn()/pr_err() instead of printk()
  ...

Documentation/ABI/testing/sysfs-class-bdi

@@ -48,3 +48,8 @@ max_ratio (read-write)
 	most of the write-back cache.  For example in case of an NFS
 	mount that is prone to get stuck, or a FUSE mount which cannot
 	be trusted to play fair.
+
+stable_pages_required (read-only)
+
+	If set, the backing device requires that all pages comprising a write
+	request must not be changed until writeout is complete.

Documentation/backlight/lp855x-driver.txt

@@ -4,7 +4,7 @@ Kernel driver lp855x
 Backlight driver for LP855x ICs
 
 Supported chips:
-	Texas Instruments LP8550, LP8551, LP8552, LP8553 and LP8556
+	Texas Instruments LP8550, LP8551, LP8552, LP8553, LP8556 and LP8557
 
 Author: Milo(Woogyom) Kim <milo.kim@ti.com>
 
@@ -24,7 +24,7 @@ Value : pwm based or register based
 
 2) chip_id
 The lp855x chip id.
-Value : lp8550/lp8551/lp8552/lp8553/lp8556
+Value : lp8550/lp8551/lp8552/lp8553/lp8556/lp8557
 
 Platform data for lp855x
 ------------------------

Documentation/devicetree/booting-without-of.txt

@@ -1228,7 +1228,7 @@ hierarchy and routing of interrupts in the hardware.
 The interrupt tree model is fully described in the
 document "Open Firmware Recommended Practice: Interrupt
 Mapping Version 0.9".  The document is available at:
-<http://playground.sun.com/1275/practice>.
+<http://www.openfirmware.org/ofwg/practice/>
 
 1) interrupts property
 ----------------------

Documentation/printk-formats.txt

@@ -53,6 +53,14 @@ Struct Resources:
 	For printing struct resources. The 'R' and 'r' specifiers result in a
 	printed resource with ('R') or without ('r') a decoded flags member.
 
+Physical addresses:
+
+	%pa	0x01234567 or 0x0123456789abcdef
+
+	For printing a phys_addr_t type (and its derivatives, such as
+	resource_size_t) which can vary based on build options, regardless of
+	the width of the CPU data path. Passed by reference.
+
 Raw buffer as a hex string:
 	%*ph	00 01 02  ...  3f
 	%*phC	00:01:02: ... :3f
@@ -150,9 +158,9 @@ s64 SHOULD be printed with %lld/%llx, (long long):
 	printk("%lld", (long long)s64_var);
 
 If <type> is dependent on a config option for its size (e.g., sector_t,
-blkcnt_t, phys_addr_t, resource_size_t) or is architecture-dependent
-for its size (e.g., tcflag_t), use a format specifier of its largest
-possible type and explicitly cast to it.  Example:
+blkcnt_t) or is architecture-dependent for its size (e.g., tcflag_t), use a
+format specifier of its largest possible type and explicitly cast to it.
+Example:
 
 	printk("test: sector number/total blocks: %llu/%llu\n",
 		(unsigned long long)sector, (unsigned long long)blockcount);

MAINTAINERS

@@ -1956,7 +1956,8 @@ F:	drivers/misc/*
 
 CHECKPATCH
 M:	Andy Whitcroft <apw@canonical.com>
-S:	Supported
+M:	Joe Perches <joe@perches.com>
+S:	Maintained
 F:	scripts/checkpatch.pl
 
 CHINESE DOCUMENTATION
@@ -5035,6 +5036,10 @@ L:	linux-mm@kvack.org
 W:	http://www.linux-mm.org
 S:	Maintained
 F:	include/linux/mm.h
+F:	include/linux/gfp.h
+F:	include/linux/mmzone.h
+F:	include/linux/memory_hotplug.h
+F:	include/linux/vmalloc.h
 F:	mm/
 
 MEMORY RESOURCE CONTROLLER

arch/alpha/kernel/osf_sys.c

@@ -1300,17 +1300,15 @@ static unsigned long
 arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
 		         unsigned long limit)
 {
-	struct vm_area_struct *vma = find_vma(current->mm, addr);
-
-	while (1) {
-		/* At this point:  (!vma || addr < vma->vm_end). */
-		if (limit - len < addr)
-			return -ENOMEM;
-		if (!vma || addr + len <= vma->vm_start)
-			return addr;
-		addr = vma->vm_end;
-		vma = vma->vm_next;
-	}
+	struct vm_unmapped_area_info info;
+
+	info.flags = 0;
+	info.length = len;
+	info.low_limit = addr;
+	info.high_limit = limit;
+	info.align_mask = 0;
+	info.align_offset = 0;
+	return vm_unmapped_area(&info);
 }
 
 unsigned long

arch/arm/boot/dts/armada-370-xp.dtsi

@@ -131,6 +131,12 @@
 			clocks = <&coreclk 0>;
 			status = "disabled";
 		};
+
+		rtc@10300 {
+			compatible = "marvell,orion-rtc";
+			reg = <0xd0010300 0x20>;
+			interrupts = <50>;
+		};
 	};
 };
 

arch/arm/configs/pxa910_defconfig

@@ -42,6 +42,14 @@ CONFIG_SMC91X=y
 # CONFIG_SERIO is not set
 CONFIG_SERIAL_PXA=y
 CONFIG_SERIAL_PXA_CONSOLE=y
+CONFIG_SPI=y
+CONFIG_FB=y
+CONFIG_MMP_DISP=y
+CONFIG_MMP_DISP_CONTROLLER=y
+CONFIG_MMP_SPI=y
+CONFIG_MMP_PANEL_TPOHVGA=y
+CONFIG_MMP_FB=y
+CONFIG_LOGO=y
 # CONFIG_LEGACY_PTYS is not set
 # CONFIG_HW_RANDOM is not set
 # CONFIG_HWMON is not set

arch/arm/mach-mmp/include/mach/pxa910.h

@@ -8,6 +8,7 @@ extern void __init pxa910_init_irq(void);
 #include <linux/i2c/pxa-i2c.h>
 #include <mach/devices.h>
 #include <linux/platform_data/mtd-nand-pxa3xx.h>
+#include <video/mmp_disp.h>
 
 extern struct pxa_device_desc pxa910_device_uart1;
 extern struct pxa_device_desc pxa910_device_uart2;
@@ -21,7 +22,9 @@ extern struct pxa_device_desc pxa910_device_nand;
 extern struct platform_device pxa168_device_u2o;
 extern struct platform_device pxa168_device_u2ootg;
 extern struct platform_device pxa168_device_u2oehci;
-
+extern struct pxa_device_desc pxa910_device_disp;
+extern struct pxa_device_desc pxa910_device_fb;
+extern struct pxa_device_desc pxa910_device_panel;
 extern struct platform_device pxa910_device_gpio;
 extern struct platform_device pxa910_device_rtc;
 

arch/arm/mach-mmp/pxa910.c

@@ -134,6 +134,9 @@ PXA910_DEVICE(pwm2, "pxa910-pwm", 1, NONE, 0xd401a400, 0x10);
 PXA910_DEVICE(pwm3, "pxa910-pwm", 2, NONE, 0xd401a800, 0x10);
 PXA910_DEVICE(pwm4, "pxa910-pwm", 3, NONE, 0xd401ac00, 0x10);
 PXA910_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99);
+PXA910_DEVICE(disp, "mmp-disp", 0, LCD, 0xd420b000, 0x1ec);
+PXA910_DEVICE(fb, "mmp-fb", -1, NONE, 0, 0);
+PXA910_DEVICE(panel, "tpo-hvga", -1, NONE, 0, 0);
 
 struct resource pxa910_resource_gpio[] = {
 	{

arch/arm/mach-mmp/ttc_dkb.c

@@ -19,6 +19,8 @@
 #include <linux/gpio.h>
 #include <linux/mfd/88pm860x.h>
 #include <linux/platform_data/mv_usb.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -184,6 +186,92 @@ static struct pxa3xx_nand_platform_data dkb_nand_info = {
 };
 #endif
 
+#ifdef CONFIG_MMP_DISP
+/* path config */
+#define CFG_IOPADMODE(iopad)   (iopad)  /* 0x0 ~ 0xd */
+#define SCLK_SOURCE_SELECT(x)  (x << 30) /* 0x0 ~ 0x3 */
+/* link config */
+#define CFG_DUMBMODE(mode)     (mode << 28) /* 0x0 ~ 0x6*/
+#define CFG_GRA_SWAPRB(x)      (x << 0) /* 1: rbswap enabled */
+static struct mmp_mach_path_config dkb_disp_config[] = {
+	[0] = {
+		.name = "mmp-parallel",
+		.overlay_num = 2,
+		.output_type = PATH_OUT_PARALLEL,
+		.path_config = CFG_IOPADMODE(0x1)
+			| SCLK_SOURCE_SELECT(0x1),
+		.link_config = CFG_DUMBMODE(0x2)
+			| CFG_GRA_SWAPRB(0x1),
+	},
+};
+
+static struct mmp_mach_plat_info dkb_disp_info = {
+	.name = "mmp-disp",
+	.clk_name = "disp0",
+	.path_num = 1,
+	.paths = dkb_disp_config,
+};
+
+static struct mmp_buffer_driver_mach_info dkb_fb_info = {
+	.name = "mmp-fb",
+	.path_name = "mmp-parallel",
+	.overlay_id = 0,
+	.dmafetch_id = 1,
+	.default_pixfmt = PIXFMT_RGB565,
+};
+
+static void dkb_tpo_panel_power(int on)
+{
+	int err;
+	u32 spi_reset = mfp_to_gpio(MFP_PIN_GPIO106);
+
+	if (on) {
+		err = gpio_request(spi_reset, "TPO_LCD_SPI_RESET");
+		if (err) {
+			pr_err("failed to request GPIO for TPO LCD RESET\n");
+			return;
+		}
+		gpio_direction_output(spi_reset, 0);
+		udelay(100);
+		gpio_set_value(spi_reset, 1);
+		gpio_free(spi_reset);
+	} else {
+		err = gpio_request(spi_reset, "TPO_LCD_SPI_RESET");
+		if (err) {
+			pr_err("failed to request LCD RESET gpio\n");
+			return;
+		}
+		gpio_set_value(spi_reset, 0);
+		gpio_free(spi_reset);
+	}
+}
+
+static struct mmp_mach_panel_info dkb_tpo_panel_info = {
+	.name = "tpo-hvga",
+	.plat_path_name = "mmp-parallel",
+	.plat_set_onoff = dkb_tpo_panel_power,
+};
+
+static struct spi_board_info spi_board_info[] __initdata = {
+	{
+		.modalias       = "tpo-hvga",
+		.platform_data  = &dkb_tpo_panel_info,
+		.bus_num        = 5,
+	}
+};
+
+static void __init add_disp(void)
+{
+	pxa_register_device(&pxa910_device_disp,
+		&dkb_disp_info, sizeof(dkb_disp_info));
+	spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
+	pxa_register_device(&pxa910_device_fb,
+		&dkb_fb_info, sizeof(dkb_fb_info));
+	pxa_register_device(&pxa910_device_panel,
+		&dkb_tpo_panel_info, sizeof(dkb_tpo_panel_info));
+}
+#endif
+
 static void __init ttc_dkb_init(void)
 {
 	mfp_config(ARRAY_AND_SIZE(ttc_dkb_pin_config));
@@ -212,6 +300,10 @@ static void __init ttc_dkb_init(void)
 	pxa168_device_u2ootg.dev.platform_data = &ttc_usb_pdata;
 	platform_device_register(&pxa168_device_u2ootg);
 #endif
+
+#ifdef CONFIG_MMP_DISP
+	add_disp();
+#endif
 }
 
 MACHINE_START(TTC_DKB, "PXA910-based TTC_DKB Development Platform")

arch/cris/include/uapi/asm/posix_types.h

@@ -22,11 +22,6 @@ typedef unsigned short	__kernel_uid_t;
 typedef unsigned short	__kernel_gid_t;
 #define __kernel_uid_t __kernel_uid_t
 
-typedef __SIZE_TYPE__	__kernel_size_t;
-typedef long		__kernel_ssize_t;
-typedef int		__kernel_ptrdiff_t;
-#define __kernel_size_t __kernel_size_t
-
 typedef unsigned short	__kernel_old_dev_t;
 #define __kernel_old_dev_t __kernel_old_dev_t
 

arch/mn10300/unit-asb2305/pci-irq.c

@@ -29,7 +29,7 @@ void __init pcibios_fixup_irqs(void)
 	struct pci_dev *dev = NULL;
 	u8 line, pin;
 
-	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+	for_each_pci_dev(dev) {
 		pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
 		if (pin) {
 			dev->irq = XIRQ1;

arch/tile/Kconfig

@@ -413,12 +413,6 @@ config TILE_USB
 	  Provides USB host adapter support for the built-in EHCI and OHCI
 	  interfaces on TILE-Gx chips.
 
-# USB OHCI needs the bounce pool since tilegx will often have more
-# than 4GB of memory, but we don't currently use the IOTLB to present
-# a 32-bit address to OHCI.  So we need to use a bounce pool instead.
-config NEED_BOUNCE_POOL
-	def_bool USB_OHCI_HCD
-
 source "drivers/pci/hotplug/Kconfig"
 
 endmenu

block/blk-core.c

@@ -1474,6 +1474,11 @@ void blk_queue_bio(struct request_queue *q, struct bio *bio)
 	 */
 	blk_queue_bounce(q, &bio);
 
+	if (bio_integrity_enabled(bio) && bio_integrity_prep(bio)) {
+		bio_endio(bio, -EIO);
+		return;
+	}
+
 	if (bio->bi_rw & (REQ_FLUSH | REQ_FUA)) {
 		spin_lock_irq(q->queue_lock);
 		where = ELEVATOR_INSERT_FLUSH;
@@ -1714,9 +1719,6 @@ generic_make_request_checks(struct bio *bio)
 	 */
 	blk_partition_remap(bio);
 
-	if (bio_integrity_enabled(bio) && bio_integrity_prep(bio))
-		goto end_io;
-
 	if (bio_check_eod(bio, nr_sectors))
 		goto end_io;
 

block/blk-integrity.c

@@ -420,6 +420,8 @@ int blk_integrity_register(struct gendisk *disk, struct blk_integrity *template)
 	} else
 		bi->name = bi_unsupported_name;
 
+	disk->queue->backing_dev_info.capabilities |= BDI_CAP_STABLE_WRITES;
+
 	return 0;
 }
 EXPORT_SYMBOL(blk_integrity_register);
@@ -438,6 +440,8 @@ void blk_integrity_unregister(struct gendisk *disk)
 	if (!disk || !disk->integrity)
 		return;
 
+	disk->queue->backing_dev_info.capabilities &= ~BDI_CAP_STABLE_WRITES;
+
 	bi = disk->integrity;
 
 	kobject_uevent(&bi->kobj, KOBJ_REMOVE);

drivers/net/ethernet/sun/Kconfig

@@ -61,7 +61,7 @@ config SUNGEM
 	select SUNGEM_PHY
 	---help---
 	  Support for the Sun GEM chip, aka Sun GigabitEthernet/P 2.0.  See also
-	  <http://www.sun.com/products-n-solutions/hardware/docs/pdf/806-3985-10.pdf>.
+	  <http://docs.oracle.com/cd/E19455-01/806-3985-10/806-3985-10.pdf>.
 
 config CASSINI
 	tristate "Sun Cassini support"
@@ -69,7 +69,7 @@ config CASSINI
 	select CRC32
 	---help---
 	  Support for the Sun Cassini chip, aka Sun GigaSwift Ethernet. See also
-	  <http://www.sun.com/products-n-solutions/hardware/docs/pdf/817-4341-10.pdf>
+	  <http://docs.oracle.com/cd/E19113-01/giga.ether.pci/817-4341-10/817-4341-10.pdf>.
 
 config SUNVNET
 	tristate "Sun Virtual Network support"

drivers/pcmcia/cs.c

@@ -484,7 +484,7 @@ static int socket_early_resume(struct pcmcia_socket *skt)
 
 static int socket_late_resume(struct pcmcia_socket *skt)
 {
-	int ret;
+	int ret = 0;
 
 	mutex_lock(&skt->ops_mutex);
 	skt->state &= ~SOCKET_SUSPEND;
@@ -511,19 +511,31 @@ static int socket_late_resume(struct pcmcia_socket *skt)
 		return socket_insert(skt);
 	}
 
+	if (!(skt->state & SOCKET_CARDBUS) && (skt->callback))
+		ret = skt->callback->early_resume(skt);
+	return ret;
+}
+
+/*
+ * Finalize the resume. In case of a cardbus socket, we have
+ * to rebind the devices as we can't be certain that it has been
+ * replaced, or not.
+ */
+static int socket_complete_resume(struct pcmcia_socket *skt)
+{
+	int ret = 0;
 #ifdef CONFIG_CARDBUS
 	if (skt->state & SOCKET_CARDBUS) {
 		/* We can't be sure the CardBus card is the same
 		 * as the one previously inserted. Therefore, remove
 		 * and re-add... */
 		cb_free(skt);
-		cb_alloc(skt);
-		return 0;
+		ret = cb_alloc(skt);
+		if (ret)
+			cb_free(skt);
 	}
 #endif
-	if (!(skt->state & SOCKET_CARDBUS) && (skt->callback))
-		skt->callback->early_resume(skt);
-	return 0;
+	return ret;
 }
 
 /*
@@ -533,11 +545,15 @@ static int socket_late_resume(struct pcmcia_socket *skt)
  */
 static int socket_resume(struct pcmcia_socket *skt)
 {
+	int err;
 	if (!(skt->state & SOCKET_SUSPEND))
 		return -EBUSY;
 
 	socket_early_resume(skt);
-	return socket_late_resume(skt);
+	err = socket_late_resume(skt);
+	if (!err)
+		err = socket_complete_resume(skt);
+	return err;
 }
 
 static void socket_remove(struct pcmcia_socket *skt)
@@ -848,6 +864,12 @@ static int __used pcmcia_socket_dev_resume(struct device *dev)
 	return __pcmcia_pm_op(dev, socket_late_resume);
 }
 
+static void __used pcmcia_socket_dev_complete(struct device *dev)
+{
+	WARN(__pcmcia_pm_op(dev, socket_complete_resume),
+		"failed to complete resume");
+}
+
 static const struct dev_pm_ops pcmcia_socket_pm_ops = {
 	/* dev_resume may be called with IRQs enabled */
 	SET_SYSTEM_SLEEP_PM_OPS(NULL,
@@ -862,6 +884,7 @@ static const struct dev_pm_ops pcmcia_socket_pm_ops = {
 	.resume_noirq = pcmcia_socket_dev_resume_noirq,
 	.thaw_noirq = pcmcia_socket_dev_resume_noirq,
 	.restore_noirq = pcmcia_socket_dev_resume_noirq,
+	.complete = pcmcia_socket_dev_complete,
 };
 
 #define PCMCIA_SOCKET_CLASS_PM_OPS (&pcmcia_socket_pm_ops)

drivers/rtc/Kconfig

@@ -204,6 +204,12 @@ config RTC_DRV_DS3232
 	  This driver can also be built as a module.  If so, the module
 	  will be called rtc-ds3232.
 
+config RTC_DRV_LP8788
+	tristate "TI LP8788 RTC driver"
+	depends on MFD_LP8788
+	help
+	  Say Y to enable support for the LP8788 RTC/ALARM driver.
+
 config RTC_DRV_MAX6900
 	tristate "Maxim MAX6900"
 	help
@@ -243,6 +249,26 @@ config RTC_DRV_MAX8998
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-max8998.
 
+config RTC_DRV_MAX8997
+	tristate "Maxim MAX8997"
+	depends on MFD_MAX8997
+	help
+	  If you say yes here you will get support for the
+	  RTC of Maxim MAX8997 PMIC.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-max8997.
+
+config RTC_DRV_MAX77686
+	tristate "Maxim MAX77686"
+	depends on MFD_MAX77686
+	help
+	  If you say yes here you will get support for the
+	  RTC of Maxim MAX77686 PMIC.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-max77686.
+
 config RTC_DRV_RS5C372
 	tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
 	help
@@ -380,6 +406,14 @@ config RTC_DRV_TPS65910
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-tps65910.
 
+config RTC_DRV_TPS80031
+	tristate "TI TPS80031/TPS80032 RTC driver"
+	depends on MFD_TPS80031
+	help
+	  TI Power Managment IC TPS80031 supports RTC functionality
+	  along with alarm. This driver supports the RTC driver for
+	  the TPS80031 RTC module.
+
 config RTC_DRV_RC5T583
 	tristate "RICOH 5T583 RTC driver"
 	depends on MFD_RC5T583
@@ -537,6 +571,14 @@ config RTC_DRV_PCF2123
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-pcf2123.
 
+config RTC_DRV_RX4581
+	tristate "Epson RX-4581"
+	help
+	  If you say yes here you will get support for the Epson RX-4581.
+
+	  This driver can also be built as a module. If so the module
+	  will be called rtc-rx4581.
+
 endif # SPI_MASTER
 
 comment "Platform RTC drivers"

drivers/rtc/Makefile

@@ -58,6 +58,7 @@ obj-$(CONFIG_RTC_DRV_IMXDI)	+= rtc-imxdi.o
 obj-$(CONFIG_RTC_DRV_ISL1208)	+= rtc-isl1208.o
 obj-$(CONFIG_RTC_DRV_ISL12022)	+= rtc-isl12022.o
 obj-$(CONFIG_RTC_DRV_JZ4740)	+= rtc-jz4740.o
+obj-$(CONFIG_RTC_DRV_LP8788)	+= rtc-lp8788.o
 obj-$(CONFIG_RTC_DRV_LPC32XX)	+= rtc-lpc32xx.o
 obj-$(CONFIG_RTC_DRV_LOONGSON1)	+= rtc-ls1x.o
 obj-$(CONFIG_RTC_DRV_M41T80)	+= rtc-m41t80.o
@@ -71,7 +72,9 @@ obj-$(CONFIG_RTC_DRV_MAX6900)	+= rtc-max6900.o
 obj-$(CONFIG_RTC_DRV_MAX8907)	+= rtc-max8907.o
 obj-$(CONFIG_RTC_DRV_MAX8925)	+= rtc-max8925.o
 obj-$(CONFIG_RTC_DRV_MAX8998)	+= rtc-max8998.o
+obj-$(CONFIG_RTC_DRV_MAX8997)	+= rtc-max8997.o
 obj-$(CONFIG_RTC_DRV_MAX6902)	+= rtc-max6902.o
+obj-$(CONFIG_RTC_DRV_MAX77686)	+= rtc-max77686.o
 obj-$(CONFIG_RTC_DRV_MC13XXX)	+= rtc-mc13xxx.o
 obj-$(CONFIG_RTC_DRV_MSM6242)	+= rtc-msm6242.o
 obj-$(CONFIG_RTC_DRV_MPC5121)	+= rtc-mpc5121.o
@@ -97,6 +100,7 @@ obj-$(CONFIG_RTC_DRV_RS5C313)	+= rtc-rs5c313.o
 obj-$(CONFIG_RTC_DRV_RS5C348)	+= rtc-rs5c348.o
 obj-$(CONFIG_RTC_DRV_RS5C372)	+= rtc-rs5c372.o
 obj-$(CONFIG_RTC_DRV_RV3029C2)	+= rtc-rv3029c2.o
+obj-$(CONFIG_RTC_DRV_RX4581)	+= rtc-rx4581.o
 obj-$(CONFIG_RTC_DRV_RX8025)	+= rtc-rx8025.o
 obj-$(CONFIG_RTC_DRV_RX8581)	+= rtc-rx8581.o
 obj-$(CONFIG_RTC_DRV_S35390A)	+= rtc-s35390a.o
@@ -115,6 +119,7 @@ obj-$(CONFIG_RTC_DRV_TILE)	+= rtc-tile.o
 obj-$(CONFIG_RTC_DRV_TWL4030)	+= rtc-twl.o
 obj-$(CONFIG_RTC_DRV_TPS6586X)	+= rtc-tps6586x.o
 obj-$(CONFIG_RTC_DRV_TPS65910)	+= rtc-tps65910.o
+obj-$(CONFIG_RTC_DRV_TPS80031)	+= rtc-tps80031.o
 obj-$(CONFIG_RTC_DRV_TX4939)	+= rtc-tx4939.o
 obj-$(CONFIG_RTC_DRV_V3020)	+= rtc-v3020.o
 obj-$(CONFIG_RTC_DRV_VR41XX)	+= rtc-vr41xx.o

drivers/rtc/class.c

@@ -11,6 +11,8 @@
  * published by the Free Software Foundation.
 */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/rtc.h>
 #include <linux/kdev_t.h>
@@ -261,7 +263,7 @@ static int __init rtc_init(void)
 {
 	rtc_class = class_create(THIS_MODULE, "rtc");
 	if (IS_ERR(rtc_class)) {
-		printk(KERN_ERR "%s: couldn't create class\n", __FILE__);
+		pr_err("couldn't create class\n");
 		return PTR_ERR(rtc_class);
 	}
 	rtc_class->suspend = rtc_suspend;

drivers/rtc/rtc-at91rm9200.c

@@ -86,7 +86,7 @@ static int at91_rtc_readtime(struct device *dev, struct rtc_time *tm)
 	tm->tm_yday = rtc_year_days(tm->tm_mday, tm->tm_mon, tm->tm_year);
 	tm->tm_year = tm->tm_year - 1900;
 
-	pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
+	dev_dbg(dev, "%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
 		1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
 		tm->tm_hour, tm->tm_min, tm->tm_sec);
 
@@ -100,7 +100,7 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm)
 {
 	unsigned long cr;
 
-	pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
+	dev_dbg(dev, "%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
 		1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
 		tm->tm_hour, tm->tm_min, tm->tm_sec);
 
@@ -145,7 +145,7 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
 	alrm->enabled = (at91_rtc_read(AT91_RTC_IMR) & AT91_RTC_ALARM)
 			? 1 : 0;
 
-	pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
+	dev_dbg(dev, "%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
 		1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
 		tm->tm_hour, tm->tm_min, tm->tm_sec);
 
@@ -183,7 +183,7 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
 		at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM);
 	}
 
-	pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
+	dev_dbg(dev, "%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
 		at91_alarm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour,
 		tm.tm_min, tm.tm_sec);
 
@@ -192,7 +192,7 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
 
 static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
 {
-	pr_debug("%s(): cmd=%08x\n", __func__, enabled);
+	dev_dbg(dev, "%s(): cmd=%08x\n", __func__, enabled);
 
 	if (enabled) {
 		at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM);
@@ -240,7 +240,7 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id)
 
 		rtc_update_irq(rtc, 1, events);
 
-		pr_debug("%s(): num=%ld, events=0x%02lx\n", __func__,
+		dev_dbg(&pdev->dev, "%s(): num=%ld, events=0x%02lx\n", __func__,
 			events >> 8, events & 0x000000FF);
 
 		return IRQ_HANDLED;
@@ -296,8 +296,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
 				IRQF_SHARED,
 				"at91_rtc", pdev);
 	if (ret) {
-		printk(KERN_ERR "at91_rtc: IRQ %d already in use.\n",
-				irq);
+		dev_err(&pdev->dev, "IRQ %d already in use.\n", irq);
 		return ret;
 	}
 
@@ -315,7 +314,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
 	}
 	platform_set_drvdata(pdev, rtc);
 
-	printk(KERN_INFO "AT91 Real Time Clock driver.\n");
+	dev_info(&pdev->dev, "AT91 Real Time Clock driver.\n");
 	return 0;
 }
 

drivers/rtc/rtc-cmos.c

@@ -706,7 +706,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
 			rtc_cmos_int_handler = hpet_rtc_interrupt;
 			err = hpet_register_irq_handler(cmos_interrupt);
 			if (err != 0) {
-				printk(KERN_WARNING "hpet_register_irq_handler "
+				dev_warn(dev, "hpet_register_irq_handler "
 						" failed in rtc_init().");
 				goto cleanup1;
 			}
@@ -731,8 +731,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
 		goto cleanup2;
 	}
 
-	pr_info("%s: %s%s, %zd bytes nvram%s\n",
-		dev_name(&cmos_rtc.rtc->dev),
+	dev_info(dev, "%s%s, %zd bytes nvram%s\n",
 		!is_valid_irq(rtc_irq) ? "no alarms" :
 			cmos_rtc.mon_alrm ? "alarms up to one year" :
 			cmos_rtc.day_alrm ? "alarms up to one month" :
@@ -820,8 +819,7 @@ static int cmos_suspend(struct device *dev)
 			enable_irq_wake(cmos->irq);
 	}
 
-	pr_debug("%s: suspend%s, ctrl %02x\n",
-			dev_name(&cmos_rtc.rtc->dev),
+	dev_dbg(dev, "suspend%s, ctrl %02x\n",
 			(tmp & RTC_AIE) ? ", alarm may wake" : "",
 			tmp);
 
@@ -876,9 +874,7 @@ static int cmos_resume(struct device *dev)
 		spin_unlock_irq(&rtc_lock);
 	}
 
-	pr_debug("%s: resume, ctrl %02x\n",
-			dev_name(&cmos_rtc.rtc->dev),
-			tmp);
+	dev_dbg(dev, "resume, ctrl %02x\n", tmp);
 
 	return 0;
 }
@@ -1098,7 +1094,6 @@ static __init void cmos_of_init(struct platform_device *pdev)
 }
 #else
 static inline void cmos_of_init(struct platform_device *pdev) {}
-#define of_cmos_match NULL
 #endif
 /*----------------------------------------------------------------*/
 
@@ -1140,7 +1135,7 @@ static struct platform_driver cmos_platform_driver = {
 #ifdef CONFIG_PM
 		.pm		= &cmos_pm_ops,
 #endif
-		.of_match_table = of_cmos_match,
+		.of_match_table = of_match_ptr(of_cmos_match),
 	}
 };
 

drivers/rtc/rtc-coh901331.c

@@ -157,7 +157,6 @@ static int __exit coh901331_remove(struct platform_device *pdev)
 	if (rtap) {
 		rtc_device_unregister(rtap->rtc);
 		clk_unprepare(rtap->clk);
-		clk_put(rtap->clk);
 		platform_set_drvdata(pdev, NULL);
 	}
 
@@ -196,7 +195,7 @@ static int __init coh901331_probe(struct platform_device *pdev)
 			     "RTC COH 901 331 Alarm", rtap))
 		return -EIO;
 
-	rtap->clk = clk_get(&pdev->dev, NULL);
+	rtap->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(rtap->clk)) {
 		ret = PTR_ERR(rtap->clk);
 		dev_err(&pdev->dev, "could not get clock\n");
@@ -207,7 +206,7 @@ static int __init coh901331_probe(struct platform_device *pdev)
 	ret = clk_prepare_enable(rtap->clk);
 	if (ret) {
 		dev_err(&pdev->dev, "could not enable clock\n");
-		goto out_no_clk_prepenable;
+		return ret;
 	}
 	clk_disable(rtap->clk);
 
@@ -224,8 +223,6 @@ static int __init coh901331_probe(struct platform_device *pdev)
  out_no_rtc:
 	platform_set_drvdata(pdev, NULL);
 	clk_unprepare(rtap->clk);
- out_no_clk_prepenable:
-	clk_put(rtap->clk);
 	return ret;
 }
 

drivers/rtc/rtc-da9052.c

@@ -240,9 +240,10 @@ static int da9052_rtc_probe(struct platform_device *pdev)
 	rtc->da9052 = dev_get_drvdata(pdev->dev.parent);
 	platform_set_drvdata(pdev, rtc);
 	rtc->irq = platform_get_irq_byname(pdev, "ALM");
-	ret = request_threaded_irq(rtc->irq, NULL, da9052_rtc_irq,
-				   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
-				   "ALM", rtc);
+	ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
+				da9052_rtc_irq,
+				IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+				"ALM", rtc);
 	if (ret != 0) {
 		rtc_err(rtc->da9052, "irq registration failed: %d\n", ret);
 		return ret;
@@ -250,16 +251,10 @@ static int da9052_rtc_probe(struct platform_device *pdev)
 
 	rtc->rtc = rtc_device_register(pdev->name, &pdev->dev,
 				       &da9052_rtc_ops, THIS_MODULE);
-	if (IS_ERR(rtc->rtc)) {
-		ret = PTR_ERR(rtc->rtc);
-		goto err_free_irq;
-	}
+	if (IS_ERR(rtc->rtc))
+		return PTR_ERR(rtc->rtc);
 
 	return 0;
-
-err_free_irq:
-	free_irq(rtc->irq, rtc);
-	return ret;
 }
 
 static int da9052_rtc_remove(struct platform_device *pdev)
@@ -267,7 +262,6 @@ static int da9052_rtc_remove(struct platform_device *pdev)
 	struct da9052_rtc *rtc = pdev->dev.platform_data;
 
 	rtc_device_unregister(rtc->rtc);
-	free_irq(rtc->irq, rtc);
 	platform_set_drvdata(pdev, NULL);
 
 	return 0;

drivers/rtc/rtc-davinci.c

@@ -506,19 +506,19 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
 	davinci_rtc->pbase = res->start;
 	davinci_rtc->base_size = resource_size(res);
 
-	mem = request_mem_region(davinci_rtc->pbase, davinci_rtc->base_size,
-				 pdev->name);
+	mem = devm_request_mem_region(dev, davinci_rtc->pbase,
+				davinci_rtc->base_size, pdev->name);
 	if (!mem) {
 		dev_err(dev, "RTC registers at %08x are not free\n",
 			davinci_rtc->pbase);
 		return -EBUSY;
 	}
 
-	davinci_rtc->base = ioremap(davinci_rtc->pbase, davinci_rtc->base_size);
+	davinci_rtc->base = devm_ioremap(dev, davinci_rtc->pbase,
+					davinci_rtc->base_size);
 	if (!davinci_rtc->base) {
 		dev_err(dev, "unable to ioremap MEM resource\n");
-		ret = -ENOMEM;
-		goto fail2;
+		return -ENOMEM;
 	}
 
 	platform_set_drvdata(pdev, davinci_rtc);
@@ -529,7 +529,7 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
 		ret = PTR_ERR(davinci_rtc->rtc);
 		dev_err(dev, "unable to register RTC device, err %d\n",
 				ret);
-		goto fail3;
+		goto fail1;
 	}
 
 	rtcif_write(davinci_rtc, PRTCIF_INTFLG_RTCSS, PRTCIF_INTFLG);
@@ -539,11 +539,11 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
 	rtcss_write(davinci_rtc, 0, PRTCSS_RTC_CTRL);
 	rtcss_write(davinci_rtc, 0, PRTCSS_RTC_CCTRL);
 
-	ret = request_irq(davinci_rtc->irq, davinci_rtc_interrupt,
+	ret = devm_request_irq(dev, davinci_rtc->irq, davinci_rtc_interrupt,
 			  0, "davinci_rtc", davinci_rtc);
 	if (ret < 0) {
 		dev_err(dev, "unable to register davinci RTC interrupt\n");
-		goto fail4;
+		goto fail2;
 	}
 
 	/* Enable interrupts */
@@ -557,13 +557,10 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
 
 	return 0;
 
-fail4:
+fail2:
 	rtc_device_unregister(davinci_rtc->rtc);
-fail3:
+fail1:
 	platform_set_drvdata(pdev, NULL);
-	iounmap(davinci_rtc->base);
-fail2:
-	release_mem_region(davinci_rtc->pbase, davinci_rtc->base_size);
 	return ret;
 }
 
@@ -575,13 +572,8 @@ static int davinci_rtc_remove(struct platform_device *pdev)
 
 	rtcif_write(davinci_rtc, 0, PRTCIF_INTEN);
 
-	free_irq(davinci_rtc->irq, davinci_rtc);
-
 	rtc_device_unregister(davinci_rtc->rtc);
 
-	iounmap(davinci_rtc->base);
-	release_mem_region(davinci_rtc->pbase, davinci_rtc->base_size);
-
 	platform_set_drvdata(pdev, NULL);
 
 	return 0;

drivers/rtc/rtc-dev.c

@@ -11,6 +11,8 @@
  * published by the Free Software Foundation.
 */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/rtc.h>
 #include <linux/sched.h>
@@ -462,7 +464,7 @@ void rtc_dev_prepare(struct rtc_device *rtc)
 		return;
 
 	if (rtc->id >= RTC_DEV_MAX) {
-		pr_debug("%s: too many RTC devices\n", rtc->name);
+		dev_dbg(&rtc->dev, "%s: too many RTC devices\n", rtc->name);
 		return;
 	}
 
@@ -480,10 +482,10 @@ void rtc_dev_prepare(struct rtc_device *rtc)
 void rtc_dev_add_device(struct rtc_device *rtc)
 {
 	if (cdev_add(&rtc->char_dev, rtc->dev.devt, 1))
-		printk(KERN_WARNING "%s: failed to add char device %d:%d\n",
+		dev_warn(&rtc->dev, "%s: failed to add char device %d:%d\n",
 			rtc->name, MAJOR(rtc_devt), rtc->id);
 	else
-		pr_debug("%s: dev (%d:%d)\n", rtc->name,
+		dev_dbg(&rtc->dev, "%s: dev (%d:%d)\n", rtc->name,
 			MAJOR(rtc_devt), rtc->id);
 }
 
@@ -499,8 +501,7 @@ void __init rtc_dev_init(void)
 
 	err = alloc_chrdev_region(&rtc_devt, 0, RTC_DEV_MAX, "rtc");
 	if (err < 0)
-		printk(KERN_ERR "%s: failed to allocate char dev region\n",
-			__FILE__);
+		pr_err("failed to allocate char dev region\n");
 }
 
 void __exit rtc_dev_exit(void)

drivers/rtc/rtc-ds1305.c

@@ -635,9 +635,7 @@ static int ds1305_probe(struct spi_device *spi)
 		goto fail0;
 	}
 
-	dev_dbg(&spi->dev, "ctrl %s: %02x %02x %02x\n",
-			"read", ds1305->ctrl[0],
-			ds1305->ctrl[1], ds1305->ctrl[2]);
+	dev_dbg(&spi->dev, "ctrl %s: %3ph\n", "read", ds1305->ctrl);
 
 	/* Sanity check register values ... partially compensating for the
 	 * fact that SPI has no device handshake.  A pullup on MISO would
@@ -723,9 +721,7 @@ static int ds1305_probe(struct spi_device *spi)
 			goto fail0;
 		}
 
-		dev_dbg(&spi->dev, "ctrl %s: %02x %02x %02x\n",
-				"write", ds1305->ctrl[0],
-				ds1305->ctrl[1], ds1305->ctrl[2]);
+		dev_dbg(&spi->dev, "ctrl %s: %3ph\n", "write", ds1305->ctrl);
 	}
 
 	/* see if non-Linux software set up AM/PM mode */

drivers/rtc/rtc-ds1307.c

@@ -322,12 +322,7 @@ static int ds1307_get_time(struct device *dev, struct rtc_time *t)
 		return -EIO;
 	}
 
-	dev_dbg(dev, "%s: %02x %02x %02x %02x %02x %02x %02x\n",
-			"read",
-			ds1307->regs[0], ds1307->regs[1],
-			ds1307->regs[2], ds1307->regs[3],
-			ds1307->regs[4], ds1307->regs[5],
-			ds1307->regs[6]);
+	dev_dbg(dev, "%s: %7ph\n", "read", ds1307->regs);
 
 	t->tm_sec = bcd2bin(ds1307->regs[DS1307_REG_SECS] & 0x7f);
 	t->tm_min = bcd2bin(ds1307->regs[DS1307_REG_MIN] & 0x7f);
@@ -398,9 +393,7 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t)
 		break;
 	}
 
-	dev_dbg(dev, "%s: %02x %02x %02x %02x %02x %02x %02x\n",
-		"write", buf[0], buf[1], buf[2], buf[3],
-		buf[4], buf[5], buf[6]);
+	dev_dbg(dev, "%s: %7ph\n", "write", buf);
 
 	result = ds1307->write_block_data(ds1307->client,
 		ds1307->offset, 7, buf);

drivers/rtc/rtc-ds2404.c

@@ -70,7 +70,7 @@ static int ds2404_gpio_map(struct ds2404 *chip, struct platform_device *pdev,
 	for (i = 0; i < ARRAY_SIZE(ds2404_gpio); i++) {
 		err = gpio_request(ds2404_gpio[i].gpio, ds2404_gpio[i].name);
 		if (err) {
-			printk(KERN_ERR "error mapping gpio %s: %d\n",
+			dev_err(&pdev->dev, "error mapping gpio %s: %d\n",
 				ds2404_gpio[i].name, err);
 			goto err_request;
 		}
@@ -177,7 +177,7 @@ static void ds2404_write_memory(struct device *dev, u16 offset,
 
 	for (i = 0; i < length; i++) {
 		if (out[i] != ds2404_read_byte(dev)) {
-			printk(KERN_ERR "read invalid data\n");
+			dev_err(dev, "read invalid data\n");
 			return;
 		}
 	}
@@ -283,19 +283,7 @@ static struct platform_driver rtc_device_driver = {
 		.owner	= THIS_MODULE,
 	},
 };
-
-static __init int ds2404_init(void)
-{
-	return platform_driver_register(&rtc_device_driver);
-}
-
-static __exit void ds2404_exit(void)
-{
-	platform_driver_unregister(&rtc_device_driver);
-}
-
-module_init(ds2404_init);
-module_exit(ds2404_exit);
+module_platform_driver(rtc_device_driver);
 
 MODULE_DESCRIPTION("DS2404 RTC");
 MODULE_AUTHOR("Sven Schnelle");

drivers/rtc/rtc-efi.c

@@ -13,6 +13,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/time.h>
@@ -47,7 +49,7 @@ compute_wday(efi_time_t *eft)
 	int ndays = 0;
 
 	if (eft->year < 1998) {
-		printk(KERN_ERR "efirtc: EFI year < 1998, invalid date\n");
+		pr_err("EFI year < 1998, invalid date\n");
 		return -1;
 	}
 
@@ -70,7 +72,7 @@ convert_to_efi_time(struct rtc_time *wtime, efi_time_t *eft)
 	eft->day	= wtime->tm_mday;
 	eft->hour	= wtime->tm_hour;
 	eft->minute	= wtime->tm_min;
-	eft->second 	= wtime->tm_sec;
+	eft->second	= wtime->tm_sec;
 	eft->nanosecond = 0;
 	eft->daylight	= wtime->tm_isdst ? EFI_ISDST : 0;
 	eft->timezone	= EFI_UNSPECIFIED_TIMEZONE;
@@ -142,7 +144,7 @@ static int efi_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
 	 */
 	status = efi.set_wakeup_time((efi_bool_t)wkalrm->enabled, &eft);
 
-	printk(KERN_WARNING "write status is %d\n", (int)status);
+	dev_warn(dev, "write status is %d\n", (int)status);
 
 	return status == EFI_SUCCESS ? 0 : -EINVAL;
 }
@@ -157,7 +159,7 @@ static int efi_read_time(struct device *dev, struct rtc_time *tm)
 
 	if (status != EFI_SUCCESS) {
 		/* should never happen */
-		printk(KERN_ERR "efitime: can't read time\n");
+		dev_err(dev, "can't read time\n");
 		return -EINVAL;
 	}
 

drivers/rtc/rtc-fm3130.c

@@ -116,17 +116,7 @@ static int fm3130_get_time(struct device *dev, struct rtc_time *t)
 
 	fm3130_rtc_mode(dev, FM3130_MODE_NORMAL);
 
-	dev_dbg(dev, "%s: %02x %02x %02x %02x %02x %02x %02x %02x"
-			"%02x %02x %02x %02x %02x %02x %02x\n",
-			"read",
-			fm3130->regs[0], fm3130->regs[1],
-			fm3130->regs[2], fm3130->regs[3],
-			fm3130->regs[4], fm3130->regs[5],
-			fm3130->regs[6], fm3130->regs[7],
-			fm3130->regs[8], fm3130->regs[9],
-			fm3130->regs[0xa], fm3130->regs[0xb],
-			fm3130->regs[0xc], fm3130->regs[0xd],
-			fm3130->regs[0xe]);
+	dev_dbg(dev, "%s: %15ph\n", "read", fm3130->regs);
 
 	t->tm_sec = bcd2bin(fm3130->regs[FM3130_RTC_SECONDS] & 0x7f);
 	t->tm_min = bcd2bin(fm3130->regs[FM3130_RTC_MINUTES] & 0x7f);
@@ -175,12 +165,7 @@ static int fm3130_set_time(struct device *dev, struct rtc_time *t)
 	tmp = t->tm_year - 100;
 	buf[FM3130_RTC_YEARS] = bin2bcd(tmp);
 
-	dev_dbg(dev, "%s: %02x %02x %02x %02x %02x %02x %02x"
-		"%02x %02x %02x %02x %02x %02x %02x %02x\n",
-		"write", buf[0], buf[1], buf[2], buf[3],
-		buf[4], buf[5], buf[6], buf[7],
-		buf[8], buf[9], buf[0xa], buf[0xb],
-		buf[0xc], buf[0xd], buf[0xe]);
+	dev_dbg(dev, "%s: %15ph\n", "write", buf);
 
 	fm3130_rtc_mode(dev, FM3130_MODE_WRITE);
 
@@ -517,18 +502,8 @@ bad_alarm:
 bad_clock:
 
 	if (!fm3130->data_valid || !fm3130->alarm_valid)
-		dev_dbg(&client->dev,
-				"%s: %02x %02x %02x %02x %02x %02x %02x %02x"
-				"%02x %02x %02x %02x %02x %02x %02x\n",
-			"bogus registers",
-			fm3130->regs[0], fm3130->regs[1],
-			fm3130->regs[2], fm3130->regs[3],
-			fm3130->regs[4], fm3130->regs[5],
-			fm3130->regs[6], fm3130->regs[7],
-			fm3130->regs[8], fm3130->regs[9],
-			fm3130->regs[0xa], fm3130->regs[0xb],
-			fm3130->regs[0xc], fm3130->regs[0xd],
-			fm3130->regs[0xe]);
+		dev_dbg(&client->dev, "%s: %15ph\n", "bogus registers",
+			fm3130->regs);
 
 	/* We won't bail out here because we just got invalid data.
 	   Time setting from u-boot doesn't work anyway */

drivers/rtc/rtc-imxdi.c

@@ -406,7 +406,7 @@ static int dryice_rtc_probe(struct platform_device *pdev)
 
 	mutex_init(&imxdi->write_mutex);
 
-	imxdi->clk = clk_get(&pdev->dev, NULL);
+	imxdi->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(imxdi->clk))
 		return PTR_ERR(imxdi->clk);
 	clk_prepare_enable(imxdi->clk);
@@ -475,7 +475,6 @@ static int dryice_rtc_probe(struct platform_device *pdev)
 
 err:
 	clk_disable_unprepare(imxdi->clk);
-	clk_put(imxdi->clk);
 
 	return rc;
 }
@@ -492,7 +491,6 @@ static int dryice_rtc_remove(struct platform_device *pdev)
 	rtc_device_unregister(imxdi->rtc);
 
 	clk_disable_unprepare(imxdi->clk);
-	clk_put(imxdi->clk);
 
 	return 0;
 }

drivers/rtc/rtc-isl12022.c

@@ -227,7 +227,7 @@ static int isl12022_set_datetime(struct i2c_client *client, struct rtc_time *tm)
 					 buf[ISL12022_REG_SC + i]);
 		if (ret)
 			return -EIO;
-	};
+	}
 
 	return 0;
 }

drivers/rtc/rtc-lp8788.c

@@ -0,0 +1,338 @@
+/*
+ * TI LP8788 MFD - rtc driver
+ *
+ * Copyright 2012 Texas Instruments
+ *
+ * Author: Milo(Woogyom) Kim <milo.kim@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/irqdomain.h>
+#include <linux/mfd/lp8788.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+#include <linux/slab.h>
+
+/* register address */
+#define LP8788_INTEN_3			0x05
+#define LP8788_RTC_UNLOCK		0x64
+#define LP8788_RTC_SEC			0x70
+#define LP8788_ALM1_SEC			0x77
+#define LP8788_ALM1_EN			0x7D
+#define LP8788_ALM2_SEC			0x7E
+#define LP8788_ALM2_EN			0x84
+
+/* mask/shift bits */
+#define LP8788_INT_RTC_ALM1_M		BIT(1)	/* Addr 05h */
+#define LP8788_INT_RTC_ALM1_S		1
+#define LP8788_INT_RTC_ALM2_M		BIT(2)	/* Addr 05h */
+#define LP8788_INT_RTC_ALM2_S		2
+#define LP8788_ALM_EN_M			BIT(7)	/* Addr 7Dh or 84h */
+#define LP8788_ALM_EN_S			7
+
+#define DEFAULT_ALARM_SEL		LP8788_ALARM_1
+#define LP8788_MONTH_OFFSET		1
+#define LP8788_BASE_YEAR		2000
+#define MAX_WDAY_BITS			7
+#define LP8788_WDAY_SET			1
+#define RTC_UNLOCK			0x1
+#define RTC_LATCH			0x2
+#define ALARM_IRQ_FLAG			(RTC_IRQF | RTC_AF)
+
+enum lp8788_time {
+	LPTIME_SEC,
+	LPTIME_MIN,
+	LPTIME_HOUR,
+	LPTIME_MDAY,
+	LPTIME_MON,
+	LPTIME_YEAR,
+	LPTIME_WDAY,
+	LPTIME_MAX,
+};
+
+struct lp8788_rtc {
+	struct lp8788 *lp;
+	struct rtc_device *rdev;
+	enum lp8788_alarm_sel alarm;
+	int irq;
+};
+
+static const u8 addr_alarm_sec[LP8788_ALARM_MAX] = {
+	LP8788_ALM1_SEC,
+	LP8788_ALM2_SEC,
+};
+
+static const u8 addr_alarm_en[LP8788_ALARM_MAX] = {
+	LP8788_ALM1_EN,
+	LP8788_ALM2_EN,
+};
+
+static const u8 mask_alarm_en[LP8788_ALARM_MAX] = {
+	LP8788_INT_RTC_ALM1_M,
+	LP8788_INT_RTC_ALM2_M,
+};
+
+static const u8 shift_alarm_en[LP8788_ALARM_MAX] = {
+	LP8788_INT_RTC_ALM1_S,
+	LP8788_INT_RTC_ALM2_S,
+};
+
+static int _to_tm_wday(u8 lp8788_wday)
+{
+	int i;
+
+	if (lp8788_wday == 0)
+		return 0;
+
+	/* lookup defined weekday from read register value */
+	for (i = 0; i < MAX_WDAY_BITS; i++) {
+		if ((lp8788_wday >> i) == LP8788_WDAY_SET)
+			break;
+	}
+
+	return i + 1;
+}
+
+static inline int _to_lp8788_wday(int tm_wday)
+{
+	return LP8788_WDAY_SET << (tm_wday - 1);
+}
+
+static void lp8788_rtc_unlock(struct lp8788 *lp)
+{
+	lp8788_write_byte(lp, LP8788_RTC_UNLOCK, RTC_UNLOCK);
+	lp8788_write_byte(lp, LP8788_RTC_UNLOCK, RTC_LATCH);
+}
+
+static int lp8788_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+	struct lp8788_rtc *rtc = dev_get_drvdata(dev);
+	struct lp8788 *lp = rtc->lp;
+	u8 data[LPTIME_MAX];
+	int ret;
+
+	lp8788_rtc_unlock(lp);
+
+	ret = lp8788_read_multi_bytes(lp, LP8788_RTC_SEC, data,	LPTIME_MAX);
+	if (ret)
+		return ret;
+
+	tm->tm_sec  = data[LPTIME_SEC];
+	tm->tm_min  = data[LPTIME_MIN];
+	tm->tm_hour = data[LPTIME_HOUR];
+	tm->tm_mday = data[LPTIME_MDAY];
+	tm->tm_mon  = data[LPTIME_MON] - LP8788_MONTH_OFFSET;
+	tm->tm_year = data[LPTIME_YEAR] + LP8788_BASE_YEAR - 1900;
+	tm->tm_wday = _to_tm_wday(data[LPTIME_WDAY]);
+
+	return 0;
+}
+
+static int lp8788_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+	struct lp8788_rtc *rtc = dev_get_drvdata(dev);
+	struct lp8788 *lp = rtc->lp;
+	u8 data[LPTIME_MAX - 1];
+	int ret, i, year;
+
+	year = tm->tm_year + 1900 - LP8788_BASE_YEAR;
+	if (year < 0) {
+		dev_err(lp->dev, "invalid year: %d\n", year);
+		return -EINVAL;
+	}
+
+	/* because rtc weekday is a readonly register, do not update */
+	data[LPTIME_SEC]  = tm->tm_sec;
+	data[LPTIME_MIN]  = tm->tm_min;
+	data[LPTIME_HOUR] = tm->tm_hour;
+	data[LPTIME_MDAY] = tm->tm_mday;
+	data[LPTIME_MON]  = tm->tm_mon + LP8788_MONTH_OFFSET;
+	data[LPTIME_YEAR] = year;
+
+	for (i = 0; i < ARRAY_SIZE(data); i++) {
+		ret = lp8788_write_byte(lp, LP8788_RTC_SEC + i, data[i]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int lp8788_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+	struct lp8788_rtc *rtc = dev_get_drvdata(dev);
+	struct lp8788 *lp = rtc->lp;
+	struct rtc_time *tm = &alarm->time;
+	u8 addr, data[LPTIME_MAX];
+	int ret;
+
+	addr = addr_alarm_sec[rtc->alarm];
+	ret = lp8788_read_multi_bytes(lp, addr, data, LPTIME_MAX);
+	if (ret)
+		return ret;
+
+	tm->tm_sec  = data[LPTIME_SEC];
+	tm->tm_min  = data[LPTIME_MIN];
+	tm->tm_hour = data[LPTIME_HOUR];
+	tm->tm_mday = data[LPTIME_MDAY];
+	tm->tm_mon  = data[LPTIME_MON] - LP8788_MONTH_OFFSET;
+	tm->tm_year = data[LPTIME_YEAR] + LP8788_BASE_YEAR - 1900;
+	tm->tm_wday = _to_tm_wday(data[LPTIME_WDAY]);
+	alarm->enabled = data[LPTIME_WDAY] & LP8788_ALM_EN_M;
+
+	return 0;
+}
+
+static int lp8788_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+	struct lp8788_rtc *rtc = dev_get_drvdata(dev);
+	struct lp8788 *lp = rtc->lp;
+	struct rtc_time *tm = &alarm->time;
+	u8 addr, data[LPTIME_MAX];
+	int ret, i, year;
+
+	year = tm->tm_year + 1900 - LP8788_BASE_YEAR;
+	if (year < 0) {
+		dev_err(lp->dev, "invalid year: %d\n", year);
+		return -EINVAL;
+	}
+
+	data[LPTIME_SEC]  = tm->tm_sec;
+	data[LPTIME_MIN]  = tm->tm_min;
+	data[LPTIME_HOUR] = tm->tm_hour;
+	data[LPTIME_MDAY] = tm->tm_mday;
+	data[LPTIME_MON]  = tm->tm_mon + LP8788_MONTH_OFFSET;
+	data[LPTIME_YEAR] = year;
+	data[LPTIME_WDAY] = _to_lp8788_wday(tm->tm_wday);
+
+	for (i = 0; i < ARRAY_SIZE(data); i++) {
+		addr = addr_alarm_sec[rtc->alarm] + i;
+		ret = lp8788_write_byte(lp, addr, data[i]);
+		if (ret)
+			return ret;
+	}
+
+	alarm->enabled = 1;
+	addr = addr_alarm_en[rtc->alarm];
+
+	return lp8788_update_bits(lp, addr, LP8788_ALM_EN_M,
+				alarm->enabled << LP8788_ALM_EN_S);
+}
+
+static int lp8788_alarm_irq_enable(struct device *dev, unsigned int enable)
+{
+	struct lp8788_rtc *rtc = dev_get_drvdata(dev);
+	struct lp8788 *lp = rtc->lp;
+	u8 mask, shift;
+
+	if (!rtc->irq)
+		return -EIO;
+
+	mask = mask_alarm_en[rtc->alarm];
+	shift = shift_alarm_en[rtc->alarm];
+
+	return lp8788_update_bits(lp, LP8788_INTEN_3, mask, enable << shift);
+}
+
+static const struct rtc_class_ops lp8788_rtc_ops = {
+	.read_time = lp8788_rtc_read_time,
+	.set_time = lp8788_rtc_set_time,
+	.read_alarm = lp8788_read_alarm,
+	.set_alarm = lp8788_set_alarm,
+	.alarm_irq_enable = lp8788_alarm_irq_enable,
+};
+
+static irqreturn_t lp8788_alarm_irq_handler(int irq, void *ptr)
+{
+	struct lp8788_rtc *rtc = ptr;
+
+	rtc_update_irq(rtc->rdev, 1, ALARM_IRQ_FLAG);
+	return IRQ_HANDLED;
+}
+
+static int lp8788_alarm_irq_register(struct platform_device *pdev,
+				struct lp8788_rtc *rtc)
+{
+	struct resource *r;
+	struct lp8788 *lp = rtc->lp;
+	struct irq_domain *irqdm = lp->irqdm;
+	int irq;
+
+	rtc->irq = 0;
+
+	/* even the alarm IRQ number is not specified, rtc time should work */
+	r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, LP8788_ALM_IRQ);
+	if (!r)
+		return 0;
+
+	if (rtc->alarm == LP8788_ALARM_1)
+		irq = r->start;
+	else
+		irq = r->end;
+
+	rtc->irq = irq_create_mapping(irqdm, irq);
+
+	return devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
+				lp8788_alarm_irq_handler,
+				0, LP8788_ALM_IRQ, rtc);
+}
+
+static int lp8788_rtc_probe(struct platform_device *pdev)
+{
+	struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent);
+	struct lp8788_rtc *rtc;
+	struct device *dev = &pdev->dev;
+
+	rtc = devm_kzalloc(dev, sizeof(struct lp8788_rtc), GFP_KERNEL);
+	if (!rtc)
+		return -ENOMEM;
+
+	rtc->lp = lp;
+	rtc->alarm = lp->pdata ? lp->pdata->alarm_sel : DEFAULT_ALARM_SEL;
+	platform_set_drvdata(pdev, rtc);
+
+	device_init_wakeup(dev, 1);
+
+	rtc->rdev = rtc_device_register("lp8788_rtc", dev,
+					&lp8788_rtc_ops, THIS_MODULE);
+	if (IS_ERR(rtc->rdev)) {
+		dev_err(dev, "can not register rtc device\n");
+		return PTR_ERR(rtc->rdev);
+	}
+
+	if (lp8788_alarm_irq_register(pdev, rtc))
+		dev_warn(lp->dev, "no rtc irq handler\n");
+
+	return 0;
+}
+
+static int lp8788_rtc_remove(struct platform_device *pdev)
+{
+	struct lp8788_rtc *rtc = platform_get_drvdata(pdev);
+
+	rtc_device_unregister(rtc->rdev);
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static struct platform_driver lp8788_rtc_driver = {
+	.probe = lp8788_rtc_probe,
+	.remove = lp8788_rtc_remove,
+	.driver = {
+		.name = LP8788_DEV_RTC,
+		.owner = THIS_MODULE,
+	},
+};
+module_platform_driver(lp8788_rtc_driver);
+
+MODULE_DESCRIPTION("Texas Instruments LP8788 RTC Driver");
+MODULE_AUTHOR("Milo Kim");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:lp8788-rtc");

drivers/rtc/rtc-max77686.c

@@ -0,0 +1,641 @@
+/*
+ * RTC driver for Maxim MAX77686
+ *
+ * Copyright (C) 2012 Samsung Electronics Co.Ltd
+ *
+ *  based on rtc-max8997.c
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/slab.h>
+#include <linux/rtc.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/max77686-private.h>
+#include <linux/irqdomain.h>
+#include <linux/regmap.h>
+
+/* RTC Control Register */
+#define BCD_EN_SHIFT			0
+#define BCD_EN_MASK				(1 << BCD_EN_SHIFT)
+#define MODEL24_SHIFT			1
+#define MODEL24_MASK			(1 << MODEL24_SHIFT)
+/* RTC Update Register1 */
+#define RTC_UDR_SHIFT			0
+#define RTC_UDR_MASK			(1 << RTC_UDR_SHIFT)
+#define RTC_RBUDR_SHIFT			4
+#define RTC_RBUDR_MASK			(1 << RTC_RBUDR_SHIFT)
+/* WTSR and SMPL Register */
+#define WTSRT_SHIFT				0
+#define SMPLT_SHIFT				2
+#define WTSR_EN_SHIFT			6
+#define SMPL_EN_SHIFT			7
+#define WTSRT_MASK				(3 << WTSRT_SHIFT)
+#define SMPLT_MASK				(3 << SMPLT_SHIFT)
+#define WTSR_EN_MASK			(1 << WTSR_EN_SHIFT)
+#define SMPL_EN_MASK			(1 << SMPL_EN_SHIFT)
+/* RTC Hour register */
+#define HOUR_PM_SHIFT			6
+#define HOUR_PM_MASK			(1 << HOUR_PM_SHIFT)
+/* RTC Alarm Enable */
+#define ALARM_ENABLE_SHIFT		7
+#define ALARM_ENABLE_MASK		(1 << ALARM_ENABLE_SHIFT)
+
+#define MAX77686_RTC_UPDATE_DELAY	16
+#undef MAX77686_RTC_WTSR_SMPL
+
+enum {
+	RTC_SEC = 0,
+	RTC_MIN,
+	RTC_HOUR,
+	RTC_WEEKDAY,
+	RTC_MONTH,
+	RTC_YEAR,
+	RTC_DATE,
+	RTC_NR_TIME
+};
+
+struct max77686_rtc_info {
+	struct device		*dev;
+	struct max77686_dev	*max77686;
+	struct i2c_client	*rtc;
+	struct rtc_device	*rtc_dev;
+	struct mutex		lock;
+
+	struct regmap		*regmap;
+
+	int virq;
+	int rtc_24hr_mode;
+};
+
+enum MAX77686_RTC_OP {
+	MAX77686_RTC_WRITE,
+	MAX77686_RTC_READ,
+};
+
+static inline int max77686_rtc_calculate_wday(u8 shifted)
+{
+	int counter = -1;
+	while (shifted) {
+		shifted >>= 1;
+		counter++;
+	}
+	return counter;
+}
+
+static void max77686_rtc_data_to_tm(u8 *data, struct rtc_time *tm,
+				   int rtc_24hr_mode)
+{
+	tm->tm_sec = data[RTC_SEC] & 0x7f;
+	tm->tm_min = data[RTC_MIN] & 0x7f;
+	if (rtc_24hr_mode)
+		tm->tm_hour = data[RTC_HOUR] & 0x1f;
+	else {
+		tm->tm_hour = data[RTC_HOUR] & 0x0f;
+		if (data[RTC_HOUR] & HOUR_PM_MASK)
+			tm->tm_hour += 12;
+	}
+
+	tm->tm_wday = max77686_rtc_calculate_wday(data[RTC_WEEKDAY] & 0x7f);
+	tm->tm_mday = data[RTC_DATE] & 0x1f;
+	tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1;
+	tm->tm_year = (data[RTC_YEAR] & 0x7f) + 100;
+	tm->tm_yday = 0;
+	tm->tm_isdst = 0;
+}
+
+static int max77686_rtc_tm_to_data(struct rtc_time *tm, u8 *data)
+{
+	data[RTC_SEC] = tm->tm_sec;
+	data[RTC_MIN] = tm->tm_min;
+	data[RTC_HOUR] = tm->tm_hour;
+	data[RTC_WEEKDAY] = 1 << tm->tm_wday;
+	data[RTC_DATE] = tm->tm_mday;
+	data[RTC_MONTH] = tm->tm_mon + 1;
+	data[RTC_YEAR] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0 ;
+
+	if (tm->tm_year < 100) {
+		pr_warn("%s: MAX77686 RTC cannot handle the year %d."
+			"Assume it's 2000.\n", __func__, 1900 + tm->tm_year);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int max77686_rtc_update(struct max77686_rtc_info *info,
+	enum MAX77686_RTC_OP op)
+{
+	int ret;
+	unsigned int data;
+
+	if (op == MAX77686_RTC_WRITE)
+		data = 1 << RTC_UDR_SHIFT;
+	else
+		data = 1 << RTC_RBUDR_SHIFT;
+
+	ret = regmap_update_bits(info->max77686->rtc_regmap,
+				 MAX77686_RTC_UPDATE0, data, data);
+	if (ret < 0)
+		dev_err(info->dev, "%s: fail to write update reg(ret=%d, data=0x%x)\n",
+				__func__, ret, data);
+	else {
+		/* Minimum 16ms delay required before RTC update. */
+		msleep(MAX77686_RTC_UPDATE_DELAY);
+	}
+
+	return ret;
+}
+
+static int max77686_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+	struct max77686_rtc_info *info = dev_get_drvdata(dev);
+	u8 data[RTC_NR_TIME];
+	int ret;
+
+	mutex_lock(&info->lock);
+
+	ret = max77686_rtc_update(info, MAX77686_RTC_READ);
+	if (ret < 0)
+		goto out;
+
+	ret = regmap_bulk_read(info->max77686->rtc_regmap,
+				MAX77686_RTC_SEC, data, RTC_NR_TIME);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to read time reg(%d)\n", __func__,	ret);
+		goto out;
+	}
+
+	max77686_rtc_data_to_tm(data, tm, info->rtc_24hr_mode);
+
+	ret = rtc_valid_tm(tm);
+
+out:
+	mutex_unlock(&info->lock);
+	return ret;
+}
+
+static int max77686_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+	struct max77686_rtc_info *info = dev_get_drvdata(dev);
+	u8 data[RTC_NR_TIME];
+	int ret;
+
+	ret = max77686_rtc_tm_to_data(tm, data);
+	if (ret < 0)
+		return ret;
+
+	mutex_lock(&info->lock);
+
+	ret = regmap_bulk_write(info->max77686->rtc_regmap,
+				 MAX77686_RTC_SEC, data, RTC_NR_TIME);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to write time reg(%d)\n", __func__,
+				ret);
+		goto out;
+	}
+
+	ret = max77686_rtc_update(info, MAX77686_RTC_WRITE);
+
+out:
+	mutex_unlock(&info->lock);
+	return ret;
+}
+
+static int max77686_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+	struct max77686_rtc_info *info = dev_get_drvdata(dev);
+	u8 data[RTC_NR_TIME];
+	unsigned int val;
+	int i, ret;
+
+	mutex_lock(&info->lock);
+
+	ret = max77686_rtc_update(info, MAX77686_RTC_READ);
+	if (ret < 0)
+		goto out;
+
+	ret = regmap_bulk_read(info->max77686->rtc_regmap,
+				 MAX77686_ALARM1_SEC, data, RTC_NR_TIME);
+	if (ret < 0) {
+		dev_err(info->dev, "%s:%d fail to read alarm reg(%d)\n",
+				__func__, __LINE__, ret);
+		goto out;
+	}
+
+	max77686_rtc_data_to_tm(data, &alrm->time, info->rtc_24hr_mode);
+
+	alrm->enabled = 0;
+	for (i = 0; i < RTC_NR_TIME; i++) {
+		if (data[i] & ALARM_ENABLE_MASK) {
+			alrm->enabled = 1;
+			break;
+		}
+	}
+
+	alrm->pending = 0;
+	ret = regmap_read(info->max77686->regmap, MAX77686_REG_STATUS1, &val);
+	if (ret < 0) {
+		dev_err(info->dev, "%s:%d fail to read status1 reg(%d)\n",
+				__func__, __LINE__, ret);
+		goto out;
+	}
+
+	if (val & (1 << 4)) /* RTCA1 */
+		alrm->pending = 1;
+
+out:
+	mutex_unlock(&info->lock);
+	return 0;
+}
+
+static int max77686_rtc_stop_alarm(struct max77686_rtc_info *info)
+{
+	u8 data[RTC_NR_TIME];
+	int ret, i;
+	struct rtc_time tm;
+
+	if (!mutex_is_locked(&info->lock))
+		dev_warn(info->dev, "%s: should have mutex locked\n", __func__);
+
+	ret = max77686_rtc_update(info, MAX77686_RTC_READ);
+	if (ret < 0)
+		goto out;
+
+	ret = regmap_bulk_read(info->max77686->rtc_regmap,
+				 MAX77686_ALARM1_SEC, data, RTC_NR_TIME);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to read alarm reg(%d)\n",
+				__func__, ret);
+		goto out;
+	}
+
+	max77686_rtc_data_to_tm(data, &tm, info->rtc_24hr_mode);
+
+	for (i = 0; i < RTC_NR_TIME; i++)
+		data[i] &= ~ALARM_ENABLE_MASK;
+
+	ret = regmap_bulk_write(info->max77686->rtc_regmap,
+				 MAX77686_ALARM1_SEC, data, RTC_NR_TIME);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
+				__func__, ret);
+		goto out;
+	}
+
+	ret = max77686_rtc_update(info, MAX77686_RTC_WRITE);
+out:
+	return ret;
+}
+
+static int max77686_rtc_start_alarm(struct max77686_rtc_info *info)
+{
+	u8 data[RTC_NR_TIME];
+	int ret;
+	struct rtc_time tm;
+
+	if (!mutex_is_locked(&info->lock))
+		dev_warn(info->dev, "%s: should have mutex locked\n", __func__);
+
+	ret = max77686_rtc_update(info, MAX77686_RTC_READ);
+	if (ret < 0)
+		goto out;
+
+	ret = regmap_bulk_read(info->max77686->rtc_regmap,
+				 MAX77686_ALARM1_SEC, data, RTC_NR_TIME);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to read alarm reg(%d)\n",
+				__func__, ret);
+		goto out;
+	}
+
+	max77686_rtc_data_to_tm(data, &tm, info->rtc_24hr_mode);
+
+	data[RTC_SEC] |= (1 << ALARM_ENABLE_SHIFT);
+	data[RTC_MIN] |= (1 << ALARM_ENABLE_SHIFT);
+	data[RTC_HOUR] |= (1 << ALARM_ENABLE_SHIFT);
+	data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK;
+	if (data[RTC_MONTH] & 0xf)
+		data[RTC_MONTH] |= (1 << ALARM_ENABLE_SHIFT);
+	if (data[RTC_YEAR] & 0x7f)
+		data[RTC_YEAR] |= (1 << ALARM_ENABLE_SHIFT);
+	if (data[RTC_DATE] & 0x1f)
+		data[RTC_DATE] |= (1 << ALARM_ENABLE_SHIFT);
+
+	ret = regmap_bulk_write(info->max77686->rtc_regmap,
+				 MAX77686_ALARM1_SEC, data, RTC_NR_TIME);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
+				__func__, ret);
+		goto out;
+	}
+
+	ret = max77686_rtc_update(info, MAX77686_RTC_WRITE);
+out:
+	return ret;
+}
+
+static int max77686_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+	struct max77686_rtc_info *info = dev_get_drvdata(dev);
+	u8 data[RTC_NR_TIME];
+	int ret;
+
+	ret = max77686_rtc_tm_to_data(&alrm->time, data);
+	if (ret < 0)
+		return ret;
+
+	mutex_lock(&info->lock);
+
+	ret = max77686_rtc_stop_alarm(info);
+	if (ret < 0)
+		goto out;
+
+	ret = regmap_bulk_write(info->max77686->rtc_regmap,
+				 MAX77686_ALARM1_SEC, data, RTC_NR_TIME);
+
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
+				__func__, ret);
+		goto out;
+	}
+
+	ret = max77686_rtc_update(info, MAX77686_RTC_WRITE);
+	if (ret < 0)
+		goto out;
+
+	if (alrm->enabled)
+		ret = max77686_rtc_start_alarm(info);
+out:
+	mutex_unlock(&info->lock);
+	return ret;
+}
+
+static int max77686_rtc_alarm_irq_enable(struct device *dev,
+					unsigned int enabled)
+{
+	struct max77686_rtc_info *info = dev_get_drvdata(dev);
+	int ret;
+
+	mutex_lock(&info->lock);
+	if (enabled)
+		ret = max77686_rtc_start_alarm(info);
+	else
+		ret = max77686_rtc_stop_alarm(info);
+	mutex_unlock(&info->lock);
+
+	return ret;
+}
+
+static irqreturn_t max77686_rtc_alarm_irq(int irq, void *data)
+{
+	struct max77686_rtc_info *info = data;
+
+	dev_info(info->dev, "%s:irq(%d)\n", __func__, irq);
+
+	rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF);
+
+	return IRQ_HANDLED;
+}
+
+static const struct rtc_class_ops max77686_rtc_ops = {
+	.read_time = max77686_rtc_read_time,
+	.set_time = max77686_rtc_set_time,
+	.read_alarm = max77686_rtc_read_alarm,
+	.set_alarm = max77686_rtc_set_alarm,
+	.alarm_irq_enable = max77686_rtc_alarm_irq_enable,
+};
+
+#ifdef MAX77686_RTC_WTSR_SMPL
+static void max77686_rtc_enable_wtsr(struct max77686_rtc_info *info, bool enable)
+{
+	int ret;
+	unsigned int val, mask;
+
+	if (enable)
+		val = (1 << WTSR_EN_SHIFT) | (3 << WTSRT_SHIFT);
+	else
+		val = 0;
+
+	mask = WTSR_EN_MASK | WTSRT_MASK;
+
+	dev_info(info->dev, "%s: %s WTSR\n", __func__,
+			enable ? "enable" : "disable");
+
+	ret = regmap_update_bits(info->max77686->rtc_regmap,
+				 MAX77686_WTSR_SMPL_CNTL, mask, val);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n",
+				__func__, ret);
+		return;
+	}
+
+	max77686_rtc_update(info, MAX77686_RTC_WRITE);
+}
+
+static void max77686_rtc_enable_smpl(struct max77686_rtc_info *info, bool enable)
+{
+	int ret;
+	unsigned int val, mask;
+
+	if (enable)
+		val = (1 << SMPL_EN_SHIFT) | (0 << SMPLT_SHIFT);
+	else
+		val = 0;
+
+	mask = SMPL_EN_MASK | SMPLT_MASK;
+
+	dev_info(info->dev, "%s: %s SMPL\n", __func__,
+			enable ? "enable" : "disable");
+
+	ret = regmap_update_bits(info->max77686->rtc_regmap,
+				 MAX77686_WTSR_SMPL_CNTL, mask, val);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n",
+				__func__, ret);
+		return;
+	}
+
+	max77686_rtc_update(info, MAX77686_RTC_WRITE);
+
+	val = 0;
+	regmap_read(info->max77686->rtc_regmap, MAX77686_WTSR_SMPL_CNTL, &val);
+	pr_info("%s: WTSR_SMPL(0x%02x)\n", __func__, val);
+}
+#endif /* MAX77686_RTC_WTSR_SMPL */
+
+static int max77686_rtc_init_reg(struct max77686_rtc_info *info)
+{
+	u8 data[2];
+	int ret;
+
+	/* Set RTC control register : Binary mode, 24hour mdoe */
+	data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
+	data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
+
+	info->rtc_24hr_mode = 1;
+
+	ret = regmap_bulk_write(info->max77686->rtc_regmap, MAX77686_RTC_CONTROLM, data, 2);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to write controlm reg(%d)\n",
+				__func__, ret);
+		return ret;
+	}
+
+	ret = max77686_rtc_update(info, MAX77686_RTC_WRITE);
+	return ret;
+}
+
+static struct regmap_config max77686_rtc_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+};
+
+static int max77686_rtc_probe(struct platform_device *pdev)
+{
+	struct max77686_dev *max77686 = dev_get_drvdata(pdev->dev.parent);
+	struct max77686_rtc_info *info;
+	int ret, virq;
+
+	dev_info(&pdev->dev, "%s\n", __func__);
+
+	info = kzalloc(sizeof(struct max77686_rtc_info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	mutex_init(&info->lock);
+	info->dev = &pdev->dev;
+	info->max77686 = max77686;
+	info->rtc = max77686->rtc;
+	info->max77686->rtc_regmap = regmap_init_i2c(info->max77686->rtc,
+					 &max77686_rtc_regmap_config);
+	if (IS_ERR(info->max77686->rtc_regmap)) {
+		ret = PTR_ERR(info->max77686->rtc_regmap);
+		dev_err(info->max77686->dev, "Failed to allocate register map: %d\n",
+				ret);
+		kfree(info);
+		return ret;
+	}
+	platform_set_drvdata(pdev, info);
+
+	ret = max77686_rtc_init_reg(info);
+
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to initialize RTC reg:%d\n", ret);
+		goto err_rtc;
+	}
+
+#ifdef MAX77686_RTC_WTSR_SMPL
+	max77686_rtc_enable_wtsr(info, true);
+	max77686_rtc_enable_smpl(info, true);
+#endif
+
+	device_init_wakeup(&pdev->dev, 1);
+
+	info->rtc_dev = rtc_device_register("max77686-rtc", &pdev->dev,
+			&max77686_rtc_ops, THIS_MODULE);
+
+	if (IS_ERR(info->rtc_dev)) {
+		dev_info(&pdev->dev, "%s: fail\n", __func__);
+
+		ret = PTR_ERR(info->rtc_dev);
+		dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
+		if (ret == 0)
+			ret = -EINVAL;
+		goto err_rtc;
+	}
+	virq = irq_create_mapping(max77686->irq_domain, MAX77686_RTCIRQ_RTCA1);
+	if (!virq)
+		goto err_rtc;
+	info->virq = virq;
+
+	ret = request_threaded_irq(virq, NULL, max77686_rtc_alarm_irq, 0,
+			"rtc-alarm0", info);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
+			info->virq, ret);
+		goto err_rtc;
+	}
+
+	goto out;
+err_rtc:
+	kfree(info);
+	return ret;
+out:
+	return ret;
+}
+
+static int max77686_rtc_remove(struct platform_device *pdev)
+{
+	struct max77686_rtc_info *info = platform_get_drvdata(pdev);
+
+	if (info) {
+		free_irq(info->virq, info);
+		rtc_device_unregister(info->rtc_dev);
+		kfree(info);
+	}
+
+	return 0;
+}
+
+static void max77686_rtc_shutdown(struct platform_device *pdev)
+{
+#ifdef MAX77686_RTC_WTSR_SMPL
+	struct max77686_rtc_info *info = platform_get_drvdata(pdev);
+	int i;
+	u8 val = 0;
+
+	for (i = 0; i < 3; i++) {
+		max77686_rtc_enable_wtsr(info, false);
+		regmap_read(info->max77686->rtc_regmap, MAX77686_WTSR_SMPL_CNTL, &val);
+		pr_info("%s: WTSR_SMPL reg(0x%02x)\n", __func__, val);
+		if (val & WTSR_EN_MASK)
+			pr_emerg("%s: fail to disable WTSR\n", __func__);
+		else {
+			pr_info("%s: success to disable WTSR\n", __func__);
+			break;
+		}
+	}
+
+	/* Disable SMPL when power off */
+	max77686_rtc_enable_smpl(info, false);
+#endif /* MAX77686_RTC_WTSR_SMPL */
+}
+
+static const struct platform_device_id rtc_id[] = {
+	{ "max77686-rtc", 0 },
+	{},
+};
+
+static struct platform_driver max77686_rtc_driver = {
+	.driver		= {
+		.name	= "max77686-rtc",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= max77686_rtc_probe,
+	.remove		= max77686_rtc_remove,
+	.shutdown	= max77686_rtc_shutdown,
+	.id_table	= rtc_id,
+};
+
+static int __init max77686_rtc_init(void)
+{
+	return platform_driver_register(&max77686_rtc_driver);
+}
+module_init(max77686_rtc_init);
+
+static void __exit max77686_rtc_exit(void)
+{
+	platform_driver_unregister(&max77686_rtc_driver);
+}
+module_exit(max77686_rtc_exit);
+
+MODULE_DESCRIPTION("Maxim MAX77686 RTC driver");
+MODULE_AUTHOR("<woong.byun@samsung.com>");
+MODULE_LICENSE("GPL");

drivers/rtc/rtc-max8907.c

@@ -205,8 +205,9 @@ static int max8907_rtc_probe(struct platform_device *pdev)
 		goto err_unregister;
 	}
 
-	ret = request_threaded_irq(rtc->irq, NULL, max8907_irq_handler,
-				   IRQF_ONESHOT, "max8907-alarm0", rtc);
+	ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
+				max8907_irq_handler,
+				IRQF_ONESHOT, "max8907-alarm0", rtc);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Failed to request IRQ%d: %d\n",
 			rtc->irq, ret);
@@ -224,7 +225,6 @@ static int max8907_rtc_remove(struct platform_device *pdev)
 {
 	struct max8907_rtc *rtc = platform_get_drvdata(pdev);
 
-	free_irq(rtc->irq, rtc);
 	rtc_device_unregister(rtc->rtc_dev);
 
 	return 0;

drivers/rtc/rtc-max8997.c

@@ -0,0 +1,552 @@
+/*
+ * RTC driver for Maxim MAX8997
+ *
+ * Copyright (C) 2013 Samsung Electronics Co.Ltd
+ *
+ *  based on rtc-max8998.c
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/slab.h>
+#include <linux/rtc.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/max8997-private.h>
+#include <linux/irqdomain.h>
+
+/* Module parameter for WTSR function control */
+static int wtsr_en = 1;
+module_param(wtsr_en, int, 0444);
+MODULE_PARM_DESC(wtsr_en, "Wachdog Timeout & Sofware Reset (default=on)");
+/* Module parameter for SMPL function control */
+static int smpl_en = 1;
+module_param(smpl_en, int, 0444);
+MODULE_PARM_DESC(smpl_en, "Sudden Momentary Power Loss (default=on)");
+
+/* RTC Control Register */
+#define BCD_EN_SHIFT			0
+#define BCD_EN_MASK			(1 << BCD_EN_SHIFT)
+#define MODEL24_SHIFT			1
+#define MODEL24_MASK			(1 << MODEL24_SHIFT)
+/* RTC Update Register1 */
+#define RTC_UDR_SHIFT			0
+#define RTC_UDR_MASK			(1 << RTC_UDR_SHIFT)
+/* WTSR and SMPL Register */
+#define WTSRT_SHIFT			0
+#define SMPLT_SHIFT			2
+#define WTSR_EN_SHIFT			6
+#define SMPL_EN_SHIFT			7
+#define WTSRT_MASK			(3 << WTSRT_SHIFT)
+#define SMPLT_MASK			(3 << SMPLT_SHIFT)
+#define WTSR_EN_MASK			(1 << WTSR_EN_SHIFT)
+#define SMPL_EN_MASK			(1 << SMPL_EN_SHIFT)
+/* RTC Hour register */
+#define HOUR_PM_SHIFT			6
+#define HOUR_PM_MASK			(1 << HOUR_PM_SHIFT)
+/* RTC Alarm Enable */
+#define ALARM_ENABLE_SHIFT		7
+#define ALARM_ENABLE_MASK		(1 << ALARM_ENABLE_SHIFT)
+
+enum {
+	RTC_SEC = 0,
+	RTC_MIN,
+	RTC_HOUR,
+	RTC_WEEKDAY,
+	RTC_MONTH,
+	RTC_YEAR,
+	RTC_DATE,
+	RTC_NR_TIME
+};
+
+struct max8997_rtc_info {
+	struct device		*dev;
+	struct max8997_dev	*max8997;
+	struct i2c_client	*rtc;
+	struct rtc_device	*rtc_dev;
+	struct mutex		lock;
+	int virq;
+	int rtc_24hr_mode;
+};
+
+static void max8997_rtc_data_to_tm(u8 *data, struct rtc_time *tm,
+				   int rtc_24hr_mode)
+{
+	tm->tm_sec = data[RTC_SEC] & 0x7f;
+	tm->tm_min = data[RTC_MIN] & 0x7f;
+	if (rtc_24hr_mode)
+		tm->tm_hour = data[RTC_HOUR] & 0x1f;
+	else {
+		tm->tm_hour = data[RTC_HOUR] & 0x0f;
+		if (data[RTC_HOUR] & HOUR_PM_MASK)
+			tm->tm_hour += 12;
+	}
+
+	tm->tm_wday = fls(data[RTC_WEEKDAY] & 0x7f) - 1;
+	tm->tm_mday = data[RTC_DATE] & 0x1f;
+	tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1;
+	tm->tm_year = (data[RTC_YEAR] & 0x7f) + 100;
+	tm->tm_yday = 0;
+	tm->tm_isdst = 0;
+}
+
+static int max8997_rtc_tm_to_data(struct rtc_time *tm, u8 *data)
+{
+	data[RTC_SEC] = tm->tm_sec;
+	data[RTC_MIN] = tm->tm_min;
+	data[RTC_HOUR] = tm->tm_hour;
+	data[RTC_WEEKDAY] = 1 << tm->tm_wday;
+	data[RTC_DATE] = tm->tm_mday;
+	data[RTC_MONTH] = tm->tm_mon + 1;
+	data[RTC_YEAR] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0 ;
+
+	if (tm->tm_year < 100) {
+		pr_warn("%s: MAX8997 RTC cannot handle the year %d."
+			"Assume it's 2000.\n", __func__, 1900 + tm->tm_year);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static inline int max8997_rtc_set_update_reg(struct max8997_rtc_info *info)
+{
+	int ret;
+
+	ret = max8997_write_reg(info->rtc, MAX8997_RTC_UPDATE1,
+						RTC_UDR_MASK);
+	if (ret < 0)
+		dev_err(info->dev, "%s: fail to write update reg(%d)\n",
+				__func__, ret);
+	else {
+		/* Minimum 16ms delay required before RTC update.
+		 * Otherwise, we may read and update based on out-of-date
+		 * value */
+		msleep(20);
+	}
+
+	return ret;
+}
+
+static int max8997_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+	struct max8997_rtc_info *info = dev_get_drvdata(dev);
+	u8 data[RTC_NR_TIME];
+	int ret;
+
+	mutex_lock(&info->lock);
+	ret = max8997_bulk_read(info->rtc, MAX8997_RTC_SEC, RTC_NR_TIME, data);
+	mutex_unlock(&info->lock);
+
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to read time reg(%d)\n", __func__,
+				ret);
+		return ret;
+	}
+
+	max8997_rtc_data_to_tm(data, tm, info->rtc_24hr_mode);
+
+	return rtc_valid_tm(tm);
+}
+
+static int max8997_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+	struct max8997_rtc_info *info = dev_get_drvdata(dev);
+	u8 data[RTC_NR_TIME];
+	int ret;
+
+	ret = max8997_rtc_tm_to_data(tm, data);
+	if (ret < 0)
+		return ret;
+
+	mutex_lock(&info->lock);
+
+	ret = max8997_bulk_write(info->rtc, MAX8997_RTC_SEC, RTC_NR_TIME, data);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to write time reg(%d)\n", __func__,
+				ret);
+		goto out;
+	}
+
+	ret = max8997_rtc_set_update_reg(info);
+out:
+	mutex_unlock(&info->lock);
+	return ret;
+}
+
+static int max8997_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+	struct max8997_rtc_info *info = dev_get_drvdata(dev);
+	u8 data[RTC_NR_TIME];
+	u8 val;
+	int i, ret;
+
+	mutex_lock(&info->lock);
+
+	ret = max8997_bulk_read(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
+			data);
+	if (ret < 0) {
+		dev_err(info->dev, "%s:%d fail to read alarm reg(%d)\n",
+				__func__, __LINE__, ret);
+		goto out;
+	}
+
+	max8997_rtc_data_to_tm(data, &alrm->time, info->rtc_24hr_mode);
+
+	alrm->enabled = 0;
+	for (i = 0; i < RTC_NR_TIME; i++) {
+		if (data[i] & ALARM_ENABLE_MASK) {
+			alrm->enabled = 1;
+			break;
+		}
+	}
+
+	alrm->pending = 0;
+	ret = max8997_read_reg(info->max8997->i2c, MAX8997_REG_STATUS1, &val);
+	if (ret < 0) {
+		dev_err(info->dev, "%s:%d fail to read status1 reg(%d)\n",
+				__func__, __LINE__, ret);
+		goto out;
+	}
+
+	if (val & (1 << 4)) /* RTCA1 */
+		alrm->pending = 1;
+
+out:
+	mutex_unlock(&info->lock);
+	return 0;
+}
+
+static int max8997_rtc_stop_alarm(struct max8997_rtc_info *info)
+{
+	u8 data[RTC_NR_TIME];
+	int ret, i;
+
+	if (!mutex_is_locked(&info->lock))
+		dev_warn(info->dev, "%s: should have mutex locked\n", __func__);
+
+	ret = max8997_bulk_read(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
+				data);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to read alarm reg(%d)\n",
+				__func__, ret);
+		goto out;
+	}
+
+	for (i = 0; i < RTC_NR_TIME; i++)
+		data[i] &= ~ALARM_ENABLE_MASK;
+
+	ret = max8997_bulk_write(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
+				 data);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
+				__func__, ret);
+		goto out;
+	}
+
+	ret = max8997_rtc_set_update_reg(info);
+out:
+	return ret;
+}
+
+static int max8997_rtc_start_alarm(struct max8997_rtc_info *info)
+{
+	u8 data[RTC_NR_TIME];
+	int ret;
+
+	if (!mutex_is_locked(&info->lock))
+		dev_warn(info->dev, "%s: should have mutex locked\n", __func__);
+
+	ret = max8997_bulk_read(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
+				data);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to read alarm reg(%d)\n",
+				__func__, ret);
+		goto out;
+	}
+
+	data[RTC_SEC] |= (1 << ALARM_ENABLE_SHIFT);
+	data[RTC_MIN] |= (1 << ALARM_ENABLE_SHIFT);
+	data[RTC_HOUR] |= (1 << ALARM_ENABLE_SHIFT);
+	data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK;
+	if (data[RTC_MONTH] & 0xf)
+		data[RTC_MONTH] |= (1 << ALARM_ENABLE_SHIFT);
+	if (data[RTC_YEAR] & 0x7f)
+		data[RTC_YEAR] |= (1 << ALARM_ENABLE_SHIFT);
+	if (data[RTC_DATE] & 0x1f)
+		data[RTC_DATE] |= (1 << ALARM_ENABLE_SHIFT);
+
+	ret = max8997_bulk_write(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
+				 data);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
+				__func__, ret);
+		goto out;
+	}
+
+	ret = max8997_rtc_set_update_reg(info);
+out:
+	return ret;
+}
+static int max8997_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+	struct max8997_rtc_info *info = dev_get_drvdata(dev);
+	u8 data[RTC_NR_TIME];
+	int ret;
+
+	ret = max8997_rtc_tm_to_data(&alrm->time, data);
+	if (ret < 0)
+		return ret;
+
+	dev_info(info->dev, "%s: %d-%02d-%02d %02d:%02d:%02d\n", __func__,
+			data[RTC_YEAR] + 2000, data[RTC_MONTH], data[RTC_DATE],
+			data[RTC_HOUR], data[RTC_MIN], data[RTC_SEC]);
+
+	mutex_lock(&info->lock);
+
+	ret = max8997_rtc_stop_alarm(info);
+	if (ret < 0)
+		goto out;
+
+	ret = max8997_bulk_write(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
+				data);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
+				__func__, ret);
+		goto out;
+	}
+
+	ret = max8997_rtc_set_update_reg(info);
+	if (ret < 0)
+		goto out;
+
+	if (alrm->enabled)
+		ret = max8997_rtc_start_alarm(info);
+out:
+	mutex_unlock(&info->lock);
+	return ret;
+}
+
+static int max8997_rtc_alarm_irq_enable(struct device *dev,
+					unsigned int enabled)
+{
+	struct max8997_rtc_info *info = dev_get_drvdata(dev);
+	int ret;
+
+	mutex_lock(&info->lock);
+	if (enabled)
+		ret = max8997_rtc_start_alarm(info);
+	else
+		ret = max8997_rtc_stop_alarm(info);
+	mutex_unlock(&info->lock);
+
+	return ret;
+}
+
+static irqreturn_t max8997_rtc_alarm_irq(int irq, void *data)
+{
+	struct max8997_rtc_info *info = data;
+
+	dev_info(info->dev, "%s:irq(%d)\n", __func__, irq);
+
+	rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF);
+
+	return IRQ_HANDLED;
+}
+
+static const struct rtc_class_ops max8997_rtc_ops = {
+	.read_time = max8997_rtc_read_time,
+	.set_time = max8997_rtc_set_time,
+	.read_alarm = max8997_rtc_read_alarm,
+	.set_alarm = max8997_rtc_set_alarm,
+	.alarm_irq_enable = max8997_rtc_alarm_irq_enable,
+};
+
+static void max8997_rtc_enable_wtsr(struct max8997_rtc_info *info, bool enable)
+{
+	int ret;
+	u8 val, mask;
+
+	if (!wtsr_en)
+		return;
+
+	if (enable)
+		val = (1 << WTSR_EN_SHIFT) | (3 << WTSRT_SHIFT);
+	else
+		val = 0;
+
+	mask = WTSR_EN_MASK | WTSRT_MASK;
+
+	dev_info(info->dev, "%s: %s WTSR\n", __func__,
+			enable ? "enable" : "disable");
+
+	ret = max8997_update_reg(info->rtc, MAX8997_RTC_WTSR_SMPL, val, mask);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n",
+				__func__, ret);
+		return;
+	}
+
+	max8997_rtc_set_update_reg(info);
+}
+
+static void max8997_rtc_enable_smpl(struct max8997_rtc_info *info, bool enable)
+{
+	int ret;
+	u8 val, mask;
+
+	if (!smpl_en)
+		return;
+
+	if (enable)
+		val = (1 << SMPL_EN_SHIFT) | (0 << SMPLT_SHIFT);
+	else
+		val = 0;
+
+	mask = SMPL_EN_MASK | SMPLT_MASK;
+
+	dev_info(info->dev, "%s: %s SMPL\n", __func__,
+			enable ? "enable" : "disable");
+
+	ret = max8997_update_reg(info->rtc, MAX8997_RTC_WTSR_SMPL, val, mask);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n",
+				__func__, ret);
+		return;
+	}
+
+	max8997_rtc_set_update_reg(info);
+
+	val = 0;
+	max8997_read_reg(info->rtc, MAX8997_RTC_WTSR_SMPL, &val);
+	pr_info("%s: WTSR_SMPL(0x%02x)\n", __func__, val);
+}
+
+static int max8997_rtc_init_reg(struct max8997_rtc_info *info)
+{
+	u8 data[2];
+	int ret;
+
+	/* Set RTC control register : Binary mode, 24hour mdoe */
+	data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
+	data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
+
+	info->rtc_24hr_mode = 1;
+
+	ret = max8997_bulk_write(info->rtc, MAX8997_RTC_CTRLMASK, 2, data);
+	if (ret < 0) {
+		dev_err(info->dev, "%s: fail to write controlm reg(%d)\n",
+				__func__, ret);
+		return ret;
+	}
+
+	ret = max8997_rtc_set_update_reg(info);
+	return ret;
+}
+
+static int max8997_rtc_probe(struct platform_device *pdev)
+{
+	struct max8997_dev *max8997 = dev_get_drvdata(pdev->dev.parent);
+	struct max8997_rtc_info *info;
+	int ret, virq;
+
+	info = devm_kzalloc(&pdev->dev, sizeof(struct max8997_rtc_info),
+			GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	mutex_init(&info->lock);
+	info->dev = &pdev->dev;
+	info->max8997 = max8997;
+	info->rtc = max8997->rtc;
+
+	platform_set_drvdata(pdev, info);
+
+	ret = max8997_rtc_init_reg(info);
+
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to initialize RTC reg:%d\n", ret);
+		return ret;
+	}
+
+	max8997_rtc_enable_wtsr(info, true);
+	max8997_rtc_enable_smpl(info, true);
+
+	device_init_wakeup(&pdev->dev, 1);
+
+	info->rtc_dev = rtc_device_register("max8997-rtc", &pdev->dev,
+			&max8997_rtc_ops, THIS_MODULE);
+
+	if (IS_ERR(info->rtc_dev)) {
+		ret = PTR_ERR(info->rtc_dev);
+		dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
+		return ret;
+	}
+
+	virq = irq_create_mapping(max8997->irq_domain, MAX8997_PMICIRQ_RTCA1);
+	if (!virq) {
+		dev_err(&pdev->dev, "Failed to create mapping alarm IRQ\n");
+		goto err_out;
+	}
+	info->virq = virq;
+
+	ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
+				max8997_rtc_alarm_irq, 0,
+				"rtc-alarm0", info);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
+			info->virq, ret);
+		goto err_out;
+	}
+
+	return ret;
+
+err_out:
+	rtc_device_unregister(info->rtc_dev);
+	return ret;
+}
+
+static int max8997_rtc_remove(struct platform_device *pdev)
+{
+	struct max8997_rtc_info *info = platform_get_drvdata(pdev);
+
+	if (info)
+		rtc_device_unregister(info->rtc_dev);
+
+	return 0;
+}
+
+static void max8997_rtc_shutdown(struct platform_device *pdev)
+{
+	struct max8997_rtc_info *info = platform_get_drvdata(pdev);
+
+	max8997_rtc_enable_wtsr(info, false);
+	max8997_rtc_enable_smpl(info, false);
+}
+
+static const struct platform_device_id rtc_id[] = {
+	{ "max8997-rtc", 0 },
+	{},
+};
+
+static struct platform_driver max8997_rtc_driver = {
+	.driver		= {
+		.name	= "max8997-rtc",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= max8997_rtc_probe,
+	.remove		= max8997_rtc_remove,
+	.shutdown	= max8997_rtc_shutdown,
+	.id_table	= rtc_id,
+};
+
+module_platform_driver(max8997_rtc_driver);
+
+MODULE_DESCRIPTION("Maxim MAX8997 RTC driver");
+MODULE_AUTHOR("<ms925.kim@samsung.com>");
+MODULE_LICENSE("GPL");

drivers/rtc/rtc-mpc5121.c

@@ -13,6 +13,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/rtc.h>
+#include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_platform.h>
 #include <linux/io.h>
@@ -403,17 +404,19 @@ static int mpc5121_rtc_remove(struct platform_device *op)
 	return 0;
 }
 
+#ifdef CONFIG_OF
 static struct of_device_id mpc5121_rtc_match[] = {
 	{ .compatible = "fsl,mpc5121-rtc", },
 	{ .compatible = "fsl,mpc5200-rtc", },
 	{},
 };
+#endif
 
 static struct platform_driver mpc5121_rtc_driver = {
 	.driver = {
 		.name = "mpc5121-rtc",
 		.owner = THIS_MODULE,
-		.of_match_table = mpc5121_rtc_match,
+		.of_match_table = of_match_ptr(mpc5121_rtc_match),
 	},
 	.probe = mpc5121_rtc_probe,
 	.remove = mpc5121_rtc_remove,

drivers/rtc/rtc-pcf8523.c

@@ -23,6 +23,7 @@
 #define REG_CONTROL3_PM_VDD (1 << 6) /* switch-over disabled */
 #define REG_CONTROL3_PM_DSM (1 << 5) /* direct switching mode */
 #define REG_CONTROL3_PM_MASK 0xe0
+#define REG_CONTROL3_BLF (1 << 2) /* battery low bit, read-only */
 
 #define REG_SECONDS  0x03
 #define REG_SECONDS_OS (1 << 7)
@@ -250,9 +251,39 @@ static int pcf8523_rtc_set_time(struct device *dev, struct rtc_time *tm)
 	return pcf8523_start_rtc(client);
 }
 
+#ifdef CONFIG_RTC_INTF_DEV
+static int pcf8523_rtc_ioctl(struct device *dev, unsigned int cmd,
+			     unsigned long arg)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	u8 value;
+	int ret = 0, err;
+
+	switch (cmd) {
+	case RTC_VL_READ:
+		err = pcf8523_read(client, REG_CONTROL3, &value);
+		if (err < 0)
+			return err;
+
+		if (value & REG_CONTROL3_BLF)
+			ret = 1;
+
+		if (copy_to_user((void __user *)arg, &ret, sizeof(int)))
+			return -EFAULT;
+
+		return 0;
+	default:
+		return -ENOIOCTLCMD;
+	}
+}
+#else
+#define pcf8523_rtc_ioctl NULL
+#endif
+
 static const struct rtc_class_ops pcf8523_rtc_ops = {
 	.read_time = pcf8523_rtc_read_time,
 	.set_time = pcf8523_rtc_set_time,
+	.ioctl = pcf8523_rtc_ioctl,
 };
 
 static int pcf8523_probe(struct i2c_client *client,

drivers/rtc/rtc-pcf8563.c

@@ -181,7 +181,7 @@ static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm)
 				__func__, err, data[0], data[1]);
 			return -EIO;
 		}
-	};
+	}
 
 	return 0;
 }

drivers/rtc/rtc-pcf8583.c

@@ -185,8 +185,8 @@ static int pcf8583_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	if (ctrl & (CTRL_STOP | CTRL_HOLD)) {
 		unsigned char new_ctrl = ctrl & ~(CTRL_STOP | CTRL_HOLD);
 
-		printk(KERN_WARNING "RTC: resetting control %02x -> %02x\n",
-		       ctrl, new_ctrl);
+		dev_warn(dev, "resetting control %02x -> %02x\n",
+			ctrl, new_ctrl);
 
 		if ((err = pcf8583_set_ctrl(client, &new_ctrl)) < 0)
 			return err;

drivers/rtc/rtc-pl031.c

@@ -384,6 +384,8 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
 		goto out_no_irq;
 	}
 
+	device_init_wakeup(&adev->dev, 1);
+
 	return 0;
 
 out_no_irq:

drivers/rtc/rtc-pxa.c

@@ -62,6 +62,10 @@
 #define RYxR_MONTH_S	5
 #define RYxR_MONTH_MASK	(0xf << RYxR_MONTH_S)
 #define RYxR_DAY_MASK	0x1f
+#define RDxR_WOM_S     20
+#define RDxR_WOM_MASK  (0x7 << RDxR_WOM_S)
+#define RDxR_DOW_S     17
+#define RDxR_DOW_MASK  (0x7 << RDxR_DOW_S)
 #define RDxR_HOUR_S	12
 #define RDxR_HOUR_MASK	(0x1f << RDxR_HOUR_S)
 #define RDxR_MIN_S	6
@@ -91,6 +95,7 @@ struct pxa_rtc {
 	spinlock_t		lock;		/* Protects this structure */
 };
 
+
 static u32 ryxr_calc(struct rtc_time *tm)
 {
 	return ((tm->tm_year + 1900) << RYxR_YEAR_S)
@@ -100,7 +105,10 @@ static u32 ryxr_calc(struct rtc_time *tm)
 
 static u32 rdxr_calc(struct rtc_time *tm)
 {
-	return (tm->tm_hour << RDxR_HOUR_S) | (tm->tm_min << RDxR_MIN_S)
+	return ((((tm->tm_mday + 6) / 7) << RDxR_WOM_S) & RDxR_WOM_MASK)
+		| (((tm->tm_wday + 1) << RDxR_DOW_S) & RDxR_DOW_MASK)
+		| (tm->tm_hour << RDxR_HOUR_S)
+		| (tm->tm_min << RDxR_MIN_S)
 		| tm->tm_sec;
 }
 
@@ -109,6 +117,7 @@ static void tm_calc(u32 rycr, u32 rdcr, struct rtc_time *tm)
 	tm->tm_year = ((rycr & RYxR_YEAR_MASK) >> RYxR_YEAR_S) - 1900;
 	tm->tm_mon = (((rycr & RYxR_MONTH_MASK) >> RYxR_MONTH_S)) - 1;
 	tm->tm_mday = (rycr & RYxR_DAY_MASK);
+	tm->tm_wday = ((rycr & RDxR_DOW_MASK) >> RDxR_DOW_S) - 1;
 	tm->tm_hour = (rdcr & RDxR_HOUR_MASK) >> RDxR_HOUR_S;
 	tm->tm_min = (rdcr & RDxR_MIN_MASK) >> RDxR_MIN_S;
 	tm->tm_sec = rdcr & RDxR_SEC_MASK;
@@ -300,8 +309,6 @@ static int pxa_rtc_proc(struct device *dev, struct seq_file *seq)
 }
 
 static const struct rtc_class_ops pxa_rtc_ops = {
-	.open = pxa_rtc_open,
-	.release = pxa_rtc_release,
 	.read_time = pxa_rtc_read_time,
 	.set_time = pxa_rtc_set_time,
 	.read_alarm = pxa_rtc_read_alarm,
@@ -341,7 +348,7 @@ static int __init pxa_rtc_probe(struct platform_device *pdev)
 		dev_err(dev, "No alarm IRQ resource defined\n");
 		goto err_ress;
 	}
-
+	pxa_rtc_open(dev);
 	ret = -ENOMEM;
 	pxa_rtc->base = ioremap(pxa_rtc->ress->start,
 				resource_size(pxa_rtc->ress));
@@ -387,6 +394,9 @@ static int __exit pxa_rtc_remove(struct platform_device *pdev)
 {
 	struct pxa_rtc *pxa_rtc = platform_get_drvdata(pdev);
 
+	struct device *dev = &pdev->dev;
+	pxa_rtc_release(dev);
+
 	rtc_device_unregister(pxa_rtc->rtc);
 
 	spin_lock_irq(&pxa_rtc->lock);
@@ -444,10 +454,7 @@ static struct platform_driver pxa_rtc_driver = {
 
 static int __init pxa_rtc_init(void)
 {
-	if (cpu_is_pxa27x() || cpu_is_pxa3xx())
-		return platform_driver_probe(&pxa_rtc_driver, pxa_rtc_probe);
-
-	return -ENODEV;
+	return platform_driver_probe(&pxa_rtc_driver, pxa_rtc_probe);
 }
 
 static void __exit pxa_rtc_exit(void)

drivers/rtc/rtc-rs5c313.c

@@ -39,6 +39,8 @@
  *	1.13	Nobuhiro Iwamatsu: Updata driver.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/err.h>
 #include <linux/rtc.h>
@@ -352,8 +354,7 @@ static void rs5c313_check_xstp_bit(void)
 		tm.tm_year 	= 2000 - 1900;
 
 		rs5c313_rtc_set_time(NULL, &tm);
-		printk(KERN_ERR "RICHO RS5C313: invalid value, resetting to "
-				"1 Jan 2000\n");
+		pr_err("invalid value, resetting to 1 Jan 2000\n");
 	}
 	RS5C313_CEDISABLE;
 	ndelay(700);		/* CE:L */

drivers/rtc/rtc-rs5c372.c

@@ -311,8 +311,7 @@ static int rs5c_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
 		buf &= ~RS5C_CTRL1_AALE;
 
 	if (i2c_smbus_write_byte_data(client, addr, buf) < 0) {
-		printk(KERN_WARNING "%s: can't update alarm\n",
-			rs5c->rtc->name);
+		dev_warn(dev, "can't update alarm\n");
 		status = -EIO;
 	} else
 		rs5c->regs[RS5C_REG_CTRL1] = buf;
@@ -381,7 +380,7 @@ static int rs5c_set_alarm(struct device *dev, struct rtc_wkalrm *t)
 		addr = RS5C_ADDR(RS5C_REG_CTRL1);
 		buf[0] = rs5c->regs[RS5C_REG_CTRL1] & ~RS5C_CTRL1_AALE;
 		if (i2c_smbus_write_byte_data(client, addr, buf[0]) < 0) {
-			pr_debug("%s: can't disable alarm\n", rs5c->rtc->name);
+			dev_dbg(dev, "can't disable alarm\n");
 			return -EIO;
 		}
 		rs5c->regs[RS5C_REG_CTRL1] = buf[0];
@@ -395,7 +394,7 @@ static int rs5c_set_alarm(struct device *dev, struct rtc_wkalrm *t)
 	for (i = 0; i < sizeof(buf); i++) {
 		addr = RS5C_ADDR(RS5C_REG_ALARM_A_MIN + i);
 		if (i2c_smbus_write_byte_data(client, addr, buf[i]) < 0) {
-			pr_debug("%s: can't set alarm time\n", rs5c->rtc->name);
+			dev_dbg(dev, "can't set alarm time\n");
 			return -EIO;
 		}
 	}
@@ -405,8 +404,7 @@ static int rs5c_set_alarm(struct device *dev, struct rtc_wkalrm *t)
 		addr = RS5C_ADDR(RS5C_REG_CTRL1);
 		buf[0] = rs5c->regs[RS5C_REG_CTRL1] | RS5C_CTRL1_AALE;
 		if (i2c_smbus_write_byte_data(client, addr, buf[0]) < 0)
-			printk(KERN_WARNING "%s: can't enable alarm\n",
-				rs5c->rtc->name);
+			dev_warn(dev, "can't enable alarm\n");
 		rs5c->regs[RS5C_REG_CTRL1] = buf[0];
 	}
 

drivers/rtc/rtc-rx4581.c

@@ -0,0 +1,314 @@
+/* drivers/rtc/rtc-rx4581.c
+ *
+ * written by Torben Hohn <torbenh@linutronix.de>
+ *
+ * Based on:
+ * drivers/rtc/rtc-max6902.c
+ *
+ * Copyright (C) 2006 8D Technologies inc.
+ * Copyright (C) 2004 Compulab Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Driver for MAX6902 spi RTC
+ *
+ * and based on:
+ * drivers/rtc/rtc-rx8581.c
+ *
+ * An I2C driver for the Epson RX8581 RTC
+ *
+ * Author: Martyn Welch <martyn.welch@ge.com>
+ * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Based on: rtc-pcf8563.c (An I2C driver for the Philips PCF8563 RTC)
+ * Copyright 2005-06 Tower Technologies
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/rtc.h>
+#include <linux/spi/spi.h>
+#include <linux/bcd.h>
+
+#define RX4581_REG_SC		0x00 /* Second in BCD */
+#define RX4581_REG_MN		0x01 /* Minute in BCD */
+#define RX4581_REG_HR		0x02 /* Hour in BCD */
+#define RX4581_REG_DW		0x03 /* Day of Week */
+#define RX4581_REG_DM		0x04 /* Day of Month in BCD */
+#define RX4581_REG_MO		0x05 /* Month in BCD */
+#define RX4581_REG_YR		0x06 /* Year in BCD */
+#define RX4581_REG_RAM		0x07 /* RAM */
+#define RX4581_REG_AMN		0x08 /* Alarm Min in BCD*/
+#define RX4581_REG_AHR		0x09 /* Alarm Hour in BCD */
+#define RX4581_REG_ADM		0x0A
+#define RX4581_REG_ADW		0x0A
+#define RX4581_REG_TMR0		0x0B
+#define RX4581_REG_TMR1		0x0C
+#define RX4581_REG_EXT		0x0D /* Extension Register */
+#define RX4581_REG_FLAG		0x0E /* Flag Register */
+#define RX4581_REG_CTRL		0x0F /* Control Register */
+
+
+/* Flag Register bit definitions */
+#define RX4581_FLAG_UF		0x20 /* Update */
+#define RX4581_FLAG_TF		0x10 /* Timer */
+#define RX4581_FLAG_AF		0x08 /* Alarm */
+#define RX4581_FLAG_VLF		0x02 /* Voltage Low */
+
+/* Control Register bit definitions */
+#define RX4581_CTRL_UIE		0x20 /* Update Interrupt Enable */
+#define RX4581_CTRL_TIE		0x10 /* Timer Interrupt Enable */
+#define RX4581_CTRL_AIE		0x08 /* Alarm Interrupt Enable */
+#define RX4581_CTRL_STOP	0x02 /* STOP bit */
+#define RX4581_CTRL_RESET	0x01 /* RESET bit */
+
+static int rx4581_set_reg(struct device *dev, unsigned char address,
+				unsigned char data)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	unsigned char buf[2];
+
+	/* high nibble must be '0' to write */
+	buf[0] = address & 0x0f;
+	buf[1] = data;
+
+	return spi_write_then_read(spi, buf, 2, NULL, 0);
+}
+
+static int rx4581_get_reg(struct device *dev, unsigned char address,
+				unsigned char *data)
+{
+	struct spi_device *spi = to_spi_device(dev);
+
+	/* Set MSB to indicate read */
+	*data = address | 0x80;
+
+	return spi_write_then_read(spi, data, 1, data, 1);
+}
+
+/*
+ * In the routines that deal directly with the rx8581 hardware, we use
+ * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch.
+ */
+static int rx4581_get_datetime(struct device *dev, struct rtc_time *tm)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	unsigned char date[7];
+	unsigned char data;
+	int err;
+
+	/* First we ensure that the "update flag" is not set, we read the
+	 * time and date then re-read the "update flag". If the update flag
+	 * has been set, we know that the time has changed during the read so
+	 * we repeat the whole process again.
+	 */
+	err = rx4581_get_reg(dev, RX4581_REG_FLAG, &data);
+	if (err != 0) {
+		dev_err(dev, "Unable to read device flags\n");
+		return -EIO;
+	}
+
+	do {
+		/* If update flag set, clear it */
+		if (data & RX4581_FLAG_UF) {
+			err = rx4581_set_reg(dev,
+				RX4581_REG_FLAG, (data & ~RX4581_FLAG_UF));
+			if (err != 0) {
+				dev_err(dev, "Unable to write device "
+					"flags\n");
+				return -EIO;
+			}
+		}
+
+		/* Now read time and date */
+		date[0] = 0x80;
+		err = spi_write_then_read(spi, date, 1, date, 7);
+		if (err < 0) {
+			dev_err(dev, "Unable to read date\n");
+			return -EIO;
+		}
+
+		/* Check flag register */
+		err = rx4581_get_reg(dev, RX4581_REG_FLAG, &data);
+		if (err != 0) {
+			dev_err(dev, "Unable to read device flags\n");
+			return -EIO;
+		}
+	} while (data & RX4581_FLAG_UF);
+
+	if (data & RX4581_FLAG_VLF)
+		dev_info(dev,
+			"low voltage detected, date/time is not reliable.\n");
+
+	dev_dbg(dev,
+		"%s: raw data is sec=%02x, min=%02x, hr=%02x, "
+		"wday=%02x, mday=%02x, mon=%02x, year=%02x\n",
+		__func__,
+		date[0], date[1], date[2], date[3], date[4], date[5], date[6]);
+
+	tm->tm_sec = bcd2bin(date[RX4581_REG_SC] & 0x7F);
+	tm->tm_min = bcd2bin(date[RX4581_REG_MN] & 0x7F);
+	tm->tm_hour = bcd2bin(date[RX4581_REG_HR] & 0x3F); /* rtc hr 0-23 */
+	tm->tm_wday = ilog2(date[RX4581_REG_DW] & 0x7F);
+	tm->tm_mday = bcd2bin(date[RX4581_REG_DM] & 0x3F);
+	tm->tm_mon = bcd2bin(date[RX4581_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */
+	tm->tm_year = bcd2bin(date[RX4581_REG_YR]);
+	if (tm->tm_year < 70)
+		tm->tm_year += 100;	/* assume we are in 1970...2069 */
+
+
+	dev_dbg(dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
+		"mday=%d, mon=%d, year=%d, wday=%d\n",
+		__func__,
+		tm->tm_sec, tm->tm_min, tm->tm_hour,
+		tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+	err = rtc_valid_tm(tm);
+	if (err < 0)
+		dev_err(dev, "retrieved date/time is not valid.\n");
+
+	return err;
+}
+
+static int rx4581_set_datetime(struct device *dev, struct rtc_time *tm)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	int err;
+	unsigned char buf[8], data;
+
+	dev_dbg(dev, "%s: secs=%d, mins=%d, hours=%d, "
+		"mday=%d, mon=%d, year=%d, wday=%d\n",
+		__func__,
+		tm->tm_sec, tm->tm_min, tm->tm_hour,
+		tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+	buf[0] = 0x00;
+	/* hours, minutes and seconds */
+	buf[RX4581_REG_SC+1] = bin2bcd(tm->tm_sec);
+	buf[RX4581_REG_MN+1] = bin2bcd(tm->tm_min);
+	buf[RX4581_REG_HR+1] = bin2bcd(tm->tm_hour);
+
+	buf[RX4581_REG_DM+1] = bin2bcd(tm->tm_mday);
+
+	/* month, 1 - 12 */
+	buf[RX4581_REG_MO+1] = bin2bcd(tm->tm_mon + 1);
+
+	/* year and century */
+	buf[RX4581_REG_YR+1] = bin2bcd(tm->tm_year % 100);
+	buf[RX4581_REG_DW+1] = (0x1 << tm->tm_wday);
+
+	/* Stop the clock */
+	err = rx4581_get_reg(dev, RX4581_REG_CTRL, &data);
+	if (err != 0) {
+		dev_err(dev, "Unable to read control register\n");
+		return -EIO;
+	}
+
+	err = rx4581_set_reg(dev, RX4581_REG_CTRL,
+		(data | RX4581_CTRL_STOP));
+	if (err != 0) {
+		dev_err(dev, "Unable to write control register\n");
+		return -EIO;
+	}
+
+	/* write register's data */
+	err = spi_write_then_read(spi, buf, 8, NULL, 0);
+	if (err != 0) {
+		dev_err(dev, "Unable to write to date registers\n");
+		return -EIO;
+	}
+
+	/* get VLF and clear it */
+	err = rx4581_get_reg(dev, RX4581_REG_FLAG, &data);
+	if (err != 0) {
+		dev_err(dev, "Unable to read flag register\n");
+		return -EIO;
+	}
+
+	err = rx4581_set_reg(dev, RX4581_REG_FLAG,
+		(data & ~(RX4581_FLAG_VLF)));
+	if (err != 0) {
+		dev_err(dev, "Unable to write flag register\n");
+		return -EIO;
+	}
+
+	/* Restart the clock */
+	err = rx4581_get_reg(dev, RX4581_REG_CTRL, &data);
+	if (err != 0) {
+		dev_err(dev, "Unable to read control register\n");
+		return -EIO;
+	}
+
+	err = rx4581_set_reg(dev, RX4581_REG_CTRL,
+		(data & ~(RX4581_CTRL_STOP)));
+	if (err != 0) {
+		dev_err(dev, "Unable to write control register\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static const struct rtc_class_ops rx4581_rtc_ops = {
+	.read_time	= rx4581_get_datetime,
+	.set_time	= rx4581_set_datetime,
+};
+
+static int rx4581_probe(struct spi_device *spi)
+{
+	struct rtc_device *rtc;
+	unsigned char tmp;
+	int res;
+
+	res = rx4581_get_reg(&spi->dev, RX4581_REG_SC, &tmp);
+	if (res != 0)
+		return res;
+
+	rtc = rtc_device_register("rx4581",
+				&spi->dev, &rx4581_rtc_ops, THIS_MODULE);
+	if (IS_ERR(rtc))
+		return PTR_ERR(rtc);
+
+	dev_set_drvdata(&spi->dev, rtc);
+	return 0;
+}
+
+static int rx4581_remove(struct spi_device *spi)
+{
+	struct rtc_device *rtc = dev_get_drvdata(&spi->dev);
+
+	rtc_device_unregister(rtc);
+	return 0;
+}
+
+static const struct spi_device_id rx4581_id[] = {
+	{ "rx4581", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, rx4581_id);
+
+static struct spi_driver rx4581_driver = {
+	.driver = {
+		.name	= "rtc-rx4581",
+		.owner	= THIS_MODULE,
+	},
+	.probe	= rx4581_probe,
+	.remove = rx4581_remove,
+	.id_table = rx4581_id,
+};
+
+module_spi_driver(rx4581_driver);
+
+MODULE_DESCRIPTION("rx4581 spi RTC driver");
+MODULE_AUTHOR("Torben Hohn");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("spi:rtc-rx4581");

drivers/rtc/rtc-s3c.c

@@ -115,7 +115,7 @@ static int s3c_rtc_setaie(struct device *dev, unsigned int enabled)
 {
 	unsigned int tmp;
 
-	pr_debug("%s: aie=%d\n", __func__, enabled);
+	dev_dbg(dev, "%s: aie=%d\n", __func__, enabled);
 
 	clk_enable(rtc_clk);
 	tmp = readb(s3c_rtc_base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
@@ -203,7 +203,7 @@ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
 
 	rtc_tm->tm_year += 100;
 
-	pr_debug("read time %04d.%02d.%02d %02d:%02d:%02d\n",
+	dev_dbg(dev, "read time %04d.%02d.%02d %02d:%02d:%02d\n",
 		 1900 + rtc_tm->tm_year, rtc_tm->tm_mon, rtc_tm->tm_mday,
 		 rtc_tm->tm_hour, rtc_tm->tm_min, rtc_tm->tm_sec);
 
@@ -218,7 +218,7 @@ static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
 	void __iomem *base = s3c_rtc_base;
 	int year = tm->tm_year - 100;
 
-	pr_debug("set time %04d.%02d.%02d %02d:%02d:%02d\n",
+	dev_dbg(dev, "set time %04d.%02d.%02d %02d:%02d:%02d\n",
 		 1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
 		 tm->tm_hour, tm->tm_min, tm->tm_sec);
 
@@ -259,7 +259,7 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
 
 	alrm->enabled = (alm_en & S3C2410_RTCALM_ALMEN) ? 1 : 0;
 
-	pr_debug("read alarm %d, %04d.%02d.%02d %02d:%02d:%02d\n",
+	dev_dbg(dev, "read alarm %d, %04d.%02d.%02d %02d:%02d:%02d\n",
 		 alm_en,
 		 1900 + alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday,
 		 alm_tm->tm_hour, alm_tm->tm_min, alm_tm->tm_sec);
@@ -310,7 +310,7 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
 	unsigned int alrm_en;
 
 	clk_enable(rtc_clk);
-	pr_debug("s3c_rtc_setalarm: %d, %04d.%02d.%02d %02d:%02d:%02d\n",
+	dev_dbg(dev, "s3c_rtc_setalarm: %d, %04d.%02d.%02d %02d:%02d:%02d\n",
 		 alrm->enabled,
 		 1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday,
 		 tm->tm_hour, tm->tm_min, tm->tm_sec);
@@ -333,7 +333,7 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
 		writeb(bin2bcd(tm->tm_hour), base + S3C2410_ALMHOUR);
 	}
 
-	pr_debug("setting S3C2410_RTCALM to %08x\n", alrm_en);
+	dev_dbg(dev, "setting S3C2410_RTCALM to %08x\n", alrm_en);
 
 	writeb(alrm_en, base + S3C2410_RTCALM);
 
@@ -459,7 +459,7 @@ static int s3c_rtc_probe(struct platform_device *pdev)
 	int ret;
 	int tmp;
 
-	pr_debug("%s: probe=%p\n", __func__, pdev);
+	dev_dbg(&pdev->dev, "%s: probe=%p\n", __func__, pdev);
 
 	/* find the IRQs */
 
@@ -475,7 +475,7 @@ static int s3c_rtc_probe(struct platform_device *pdev)
 		return s3c_rtc_alarmno;
 	}
 
-	pr_debug("s3c2410_rtc: tick irq %d, alarm irq %d\n",
+	dev_dbg(&pdev->dev, "s3c2410_rtc: tick irq %d, alarm irq %d\n",
 		 s3c_rtc_tickno, s3c_rtc_alarmno);
 
 	/* get the memory region */
@@ -504,7 +504,7 @@ static int s3c_rtc_probe(struct platform_device *pdev)
 
 	s3c_rtc_enable(pdev, 1);
 
-	pr_debug("s3c2410_rtc: RTCCON=%02x\n",
+	dev_dbg(&pdev->dev, "s3c2410_rtc: RTCCON=%02x\n",
 		 readw(s3c_rtc_base + S3C2410_RTCCON));
 
 	device_init_wakeup(&pdev->dev, 1);

drivers/rtc/rtc-sa1100.c

@@ -108,9 +108,6 @@ static int sa1100_rtc_open(struct device *dev)
 	struct rtc_device *rtc = info->rtc;
 	int ret;
 
-	ret = clk_prepare_enable(info->clk);
-	if (ret)
-		goto fail_clk;
 	ret = request_irq(info->irq_1hz, sa1100_rtc_interrupt, 0, "rtc 1Hz", dev);
 	if (ret) {
 		dev_err(dev, "IRQ %d already in use.\n", info->irq_1hz);
@@ -130,7 +127,6 @@ static int sa1100_rtc_open(struct device *dev)
 	free_irq(info->irq_1hz, dev);
  fail_ui:
 	clk_disable_unprepare(info->clk);
- fail_clk:
 	return ret;
 }
 
@@ -144,7 +140,6 @@ static void sa1100_rtc_release(struct device *dev)
 
 	free_irq(info->irq_alarm, dev);
 	free_irq(info->irq_1hz, dev);
-	clk_disable_unprepare(info->clk);
 }
 
 static int sa1100_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
@@ -253,6 +248,9 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
 	spin_lock_init(&info->lock);
 	platform_set_drvdata(pdev, info);
 
+	ret = clk_prepare_enable(info->clk);
+	if (ret)
+		goto err_enable_clk;
 	/*
 	 * According to the manual we should be able to let RTTR be zero
 	 * and then a default diviser for a 32.768KHz clock is used.
@@ -305,6 +303,8 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
 
 	return 0;
 err_dev:
+	clk_disable_unprepare(info->clk);
+err_enable_clk:
 	platform_set_drvdata(pdev, NULL);
 	clk_put(info->clk);
 err_clk:
@@ -318,6 +318,7 @@ static int sa1100_rtc_remove(struct platform_device *pdev)
 
 	if (info) {
 		rtc_device_unregister(info->rtc);
+		clk_disable_unprepare(info->clk);
 		clk_put(info->clk);
 		platform_set_drvdata(pdev, NULL);
 		kfree(info);
@@ -349,12 +350,14 @@ static const struct dev_pm_ops sa1100_rtc_pm_ops = {
 };
 #endif
 
+#ifdef CONFIG_OF
 static struct of_device_id sa1100_rtc_dt_ids[] = {
 	{ .compatible = "mrvl,sa1100-rtc", },
 	{ .compatible = "mrvl,mmp-rtc", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, sa1100_rtc_dt_ids);
+#endif
 
 static struct platform_driver sa1100_rtc_driver = {
 	.probe		= sa1100_rtc_probe,
@@ -364,7 +367,7 @@ static struct platform_driver sa1100_rtc_driver = {
 #ifdef CONFIG_PM
 		.pm	= &sa1100_rtc_pm_ops,
 #endif
-		.of_match_table = sa1100_rtc_dt_ids,
+		.of_match_table = of_match_ptr(sa1100_rtc_dt_ids),
 	},
 };
 

drivers/rtc/rtc-snvs.c

@@ -338,7 +338,7 @@ static struct platform_driver snvs_rtc_driver = {
 		.name	= "snvs_rtc",
 		.owner	= THIS_MODULE,
 		.pm	= &snvs_rtc_pm_ops,
-		.of_match_table = snvs_dt_ids,
+		.of_match_table = of_match_ptr(snvs_dt_ids),
 	},
 	.probe		= snvs_rtc_probe,
 	.remove		= snvs_rtc_remove,

drivers/rtc/rtc-stmp3xxx.c

@@ -26,6 +26,7 @@
 #include <linux/rtc.h>
 #include <linux/slab.h>
 #include <linux/of_device.h>
+#include <linux/of.h>
 
 #include <mach/common.h>
 
@@ -280,7 +281,7 @@ static struct platform_driver stmp3xxx_rtcdrv = {
 	.driver		= {
 		.name	= "stmp3xxx-rtc",
 		.owner	= THIS_MODULE,
-		.of_match_table = rtc_dt_ids,
+		.of_match_table = of_match_ptr(rtc_dt_ids),
 	},
 };
 

drivers/rtc/rtc-sun4v.c

@@ -3,6 +3,8 @@
  * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/delay.h>
@@ -26,10 +28,10 @@ retry:
 			udelay(100);
 			goto retry;
 		}
-		printk(KERN_WARNING "SUN4V: tod_get() timed out.\n");
+		pr_warn("tod_get() timed out.\n");
 		return 0;
 	}
-	printk(KERN_WARNING "SUN4V: tod_get() not supported.\n");
+	pr_warn("tod_get() not supported.\n");
 	return 0;
 }
 
@@ -53,10 +55,10 @@ retry:
 			udelay(100);
 			goto retry;
 		}
-		printk(KERN_WARNING "SUN4V: tod_set() timed out.\n");
+		pr_warn("tod_set() timed out.\n");
 		return -EAGAIN;
 	}
-	printk(KERN_WARNING "SUN4V: tod_set() not supported.\n");
+	pr_warn("tod_set() not supported.\n");
 	return -EOPNOTSUPP;
 }
 

drivers/rtc/rtc-tps6586x.c

@@ -282,7 +282,8 @@ static int tps6586x_rtc_probe(struct platform_device *pdev)
 		goto fail_rtc_register;
 	}
 
-	ret = request_threaded_irq(rtc->irq, NULL, tps6586x_rtc_irq,
+	ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
+				tps6586x_rtc_irq,
 				IRQF_ONESHOT | IRQF_EARLY_RESUME,
 				dev_name(&pdev->dev), rtc);
 	if (ret < 0) {
@@ -311,7 +312,6 @@ static int tps6586x_rtc_remove(struct platform_device *pdev)
 	tps6586x_update(tps_dev, RTC_CTRL, 0,
 		RTC_ENABLE | OSC_SRC_SEL | PRE_BYPASS | CL_SEL_MASK);
 	rtc_device_unregister(rtc->rtc);
-	free_irq(rtc->irq, rtc);
 	return 0;
 }
 

drivers/rtc/rtc-tps65910.c

@@ -22,13 +22,13 @@
 #include <linux/rtc.h>
 #include <linux/bcd.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/interrupt.h>
 #include <linux/mfd/tps65910.h>
 
 struct tps65910_rtc {
 	struct rtc_device	*rtc;
-	/* To store the list of enabled interrupts */
-	u32 irqstat;
+	int irq;
 };
 
 /* Total number of RTC registers needed to set time*/
@@ -267,13 +267,14 @@ static int tps65910_rtc_probe(struct platform_device *pdev)
 	}
 
 	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
-		tps65910_rtc_interrupt, IRQF_TRIGGER_LOW,
+		tps65910_rtc_interrupt, IRQF_TRIGGER_LOW | IRQF_EARLY_RESUME,
 		dev_name(&pdev->dev), &pdev->dev);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "IRQ is not free.\n");
 		return ret;
 	}
-	device_init_wakeup(&pdev->dev, 1);
+	tps_rtc->irq = irq;
+	device_set_wakeup_capable(&pdev->dev, 1);
 
 	tps_rtc->rtc = rtc_device_register(pdev->name, &pdev->dev,
 		&tps65910_rtc_ops, THIS_MODULE);
@@ -304,49 +305,36 @@ static int tps65910_rtc_remove(struct platform_device *pdev)
 }
 
 #ifdef CONFIG_PM_SLEEP
-
 static int tps65910_rtc_suspend(struct device *dev)
 {
-	struct tps65910 *tps = dev_get_drvdata(dev->parent);
-	u8 alarm = TPS65910_RTC_INTERRUPTS_IT_ALARM;
-	int ret;
-
-	/* Store current list of enabled interrupts*/
-	ret = regmap_read(tps->regmap, TPS65910_RTC_INTERRUPTS,
-		&tps->rtc->irqstat);
-	if (ret < 0)
-		return ret;
+	struct tps65910_rtc *tps_rtc = dev_get_drvdata(dev);
 
-	/* Enable RTC ALARM interrupt only */
-	return regmap_write(tps->regmap, TPS65910_RTC_INTERRUPTS, alarm);
+	if (device_may_wakeup(dev))
+		enable_irq_wake(tps_rtc->irq);
+	return 0;
 }
 
 static int tps65910_rtc_resume(struct device *dev)
 {
-	struct tps65910 *tps = dev_get_drvdata(dev->parent);
+	struct tps65910_rtc *tps_rtc = dev_get_drvdata(dev);
 
-	/* Restore list of enabled interrupts before suspend */
-	return regmap_write(tps->regmap, TPS65910_RTC_INTERRUPTS,
-		tps->rtc->irqstat);
+	if (device_may_wakeup(dev))
+		disable_irq_wake(tps_rtc->irq);
+	return 0;
 }
+#endif
 
 static const struct dev_pm_ops tps65910_rtc_pm_ops = {
-	.suspend	= tps65910_rtc_suspend,
-	.resume		= tps65910_rtc_resume,
+	SET_SYSTEM_SLEEP_PM_OPS(tps65910_rtc_suspend, tps65910_rtc_resume)
 };
 
-#define DEV_PM_OPS     (&tps65910_rtc_pm_ops)
-#else
-#define DEV_PM_OPS     NULL
-#endif
-
 static struct platform_driver tps65910_rtc_driver = {
 	.probe		= tps65910_rtc_probe,
 	.remove		= tps65910_rtc_remove,
 	.driver		= {
 		.owner	= THIS_MODULE,
 		.name	= "tps65910-rtc",
-		.pm	= DEV_PM_OPS,
+		.pm	= &tps65910_rtc_pm_ops,
 	},
 };
 

drivers/rtc/rtc-tps80031.c

@@ -0,0 +1,349 @@
+/*
+ * rtc-tps80031.c -- TI TPS80031/TPS80032 RTC driver
+ *
+ * RTC driver for TI TPS80031/TPS80032 Fully Integrated
+ * Power Management with Power Path and Battery Charger
+ *
+ * Copyright (c) 2012, NVIDIA Corporation.
+ *
+ * Author: Laxman Dewangan <ldewangan@nvidia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
+ * whether express or implied; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307, USA
+ */
+
+#include <linux/bcd.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mfd/tps80031.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/rtc.h>
+#include <linux/slab.h>
+
+#define ENABLE_ALARM_INT			0x08
+#define ALARM_INT_STATUS			0x40
+
+/**
+ * Setting bit to 1 in STOP_RTC will run the RTC and
+ * setting this bit to 0 will freeze RTC.
+ */
+#define STOP_RTC				0x1
+
+/* Power on reset Values of RTC registers */
+#define TPS80031_RTC_POR_YEAR			0
+#define TPS80031_RTC_POR_MONTH			1
+#define TPS80031_RTC_POR_DAY			1
+
+/* Numbers of registers for time and alarms */
+#define TPS80031_RTC_TIME_NUM_REGS		7
+#define TPS80031_RTC_ALARM_NUM_REGS		6
+
+/**
+ * PMU RTC have only 2 nibbles to store year information, so using an
+ * offset of 100 to set the base year as 2000 for our driver.
+ */
+#define RTC_YEAR_OFFSET 100
+
+struct tps80031_rtc {
+	struct rtc_device	*rtc;
+	int			irq;
+};
+
+static int tps80031_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+	u8 buff[TPS80031_RTC_TIME_NUM_REGS];
+	int ret;
+
+	ret = tps80031_reads(dev->parent, TPS80031_SLAVE_ID1,
+			TPS80031_SECONDS_REG, TPS80031_RTC_TIME_NUM_REGS, buff);
+	if (ret < 0) {
+		dev_err(dev, "reading RTC_SECONDS_REG failed, err = %d\n", ret);
+		return ret;
+	}
+
+	tm->tm_sec = bcd2bin(buff[0]);
+	tm->tm_min = bcd2bin(buff[1]);
+	tm->tm_hour = bcd2bin(buff[2]);
+	tm->tm_mday = bcd2bin(buff[3]);
+	tm->tm_mon = bcd2bin(buff[4]) - 1;
+	tm->tm_year = bcd2bin(buff[5]) + RTC_YEAR_OFFSET;
+	tm->tm_wday = bcd2bin(buff[6]);
+	return 0;
+}
+
+static int tps80031_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+	u8 buff[7];
+	int ret;
+
+	buff[0] = bin2bcd(tm->tm_sec);
+	buff[1] = bin2bcd(tm->tm_min);
+	buff[2] = bin2bcd(tm->tm_hour);
+	buff[3] = bin2bcd(tm->tm_mday);
+	buff[4] = bin2bcd(tm->tm_mon + 1);
+	buff[5] = bin2bcd(tm->tm_year % RTC_YEAR_OFFSET);
+	buff[6] = bin2bcd(tm->tm_wday);
+
+	/* Stop RTC while updating the RTC time registers */
+	ret = tps80031_clr_bits(dev->parent, TPS80031_SLAVE_ID1,
+				TPS80031_RTC_CTRL_REG, STOP_RTC);
+	if (ret < 0) {
+		dev_err(dev->parent, "Stop RTC failed, err = %d\n", ret);
+		return ret;
+	}
+
+	ret = tps80031_writes(dev->parent, TPS80031_SLAVE_ID1,
+			TPS80031_SECONDS_REG,
+			TPS80031_RTC_TIME_NUM_REGS, buff);
+	if (ret < 0) {
+		dev_err(dev, "writing RTC_SECONDS_REG failed, err %d\n", ret);
+		return ret;
+	}
+
+	ret = tps80031_set_bits(dev->parent, TPS80031_SLAVE_ID1,
+				TPS80031_RTC_CTRL_REG, STOP_RTC);
+	if (ret < 0)
+		dev_err(dev->parent, "Start RTC failed, err = %d\n", ret);
+	return ret;
+}
+
+static int tps80031_rtc_alarm_irq_enable(struct device *dev,
+					 unsigned int enable)
+{
+	int ret;
+
+	if (enable)
+		ret = tps80031_set_bits(dev->parent, TPS80031_SLAVE_ID1,
+				TPS80031_RTC_INTERRUPTS_REG, ENABLE_ALARM_INT);
+	else
+		ret = tps80031_clr_bits(dev->parent, TPS80031_SLAVE_ID1,
+				TPS80031_RTC_INTERRUPTS_REG, ENABLE_ALARM_INT);
+	if (ret < 0) {
+		dev_err(dev, "Update on RTC_INT failed, err = %d\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+static int tps80031_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+	u8 buff[TPS80031_RTC_ALARM_NUM_REGS];
+	int ret;
+
+	buff[0] = bin2bcd(alrm->time.tm_sec);
+	buff[1] = bin2bcd(alrm->time.tm_min);
+	buff[2] = bin2bcd(alrm->time.tm_hour);
+	buff[3] = bin2bcd(alrm->time.tm_mday);
+	buff[4] = bin2bcd(alrm->time.tm_mon + 1);
+	buff[5] = bin2bcd(alrm->time.tm_year % RTC_YEAR_OFFSET);
+	ret = tps80031_writes(dev->parent, TPS80031_SLAVE_ID1,
+			TPS80031_ALARM_SECONDS_REG,
+			TPS80031_RTC_ALARM_NUM_REGS, buff);
+	if (ret < 0) {
+		dev_err(dev, "Writing RTC_ALARM failed, err %d\n", ret);
+		return ret;
+	}
+	return tps80031_rtc_alarm_irq_enable(dev, alrm->enabled);
+}
+
+static int tps80031_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+	u8 buff[6];
+	int ret;
+
+	ret = tps80031_reads(dev->parent, TPS80031_SLAVE_ID1,
+			TPS80031_ALARM_SECONDS_REG,
+			TPS80031_RTC_ALARM_NUM_REGS, buff);
+	if (ret < 0) {
+		dev_err(dev->parent,
+			"reading RTC_ALARM failed, err = %d\n", ret);
+		return ret;
+	}
+
+	alrm->time.tm_sec = bcd2bin(buff[0]);
+	alrm->time.tm_min = bcd2bin(buff[1]);
+	alrm->time.tm_hour = bcd2bin(buff[2]);
+	alrm->time.tm_mday = bcd2bin(buff[3]);
+	alrm->time.tm_mon = bcd2bin(buff[4]) - 1;
+	alrm->time.tm_year = bcd2bin(buff[5]) + RTC_YEAR_OFFSET;
+	return 0;
+}
+
+static int clear_alarm_int_status(struct device *dev, struct tps80031_rtc *rtc)
+{
+	int ret;
+	u8 buf;
+
+	/**
+	 * As per datasheet, A dummy read of this  RTC_STATUS_REG register
+	 * is necessary before each I2C read in order to update the status
+	 * register value.
+	 */
+	ret = tps80031_read(dev->parent, TPS80031_SLAVE_ID1,
+				TPS80031_RTC_STATUS_REG, &buf);
+	if (ret < 0) {
+		dev_err(dev, "reading RTC_STATUS failed. err = %d\n", ret);
+		return ret;
+	}
+
+	/* clear Alarm status bits.*/
+	ret = tps80031_set_bits(dev->parent, TPS80031_SLAVE_ID1,
+			TPS80031_RTC_STATUS_REG, ALARM_INT_STATUS);
+	if (ret < 0) {
+		dev_err(dev, "clear Alarm INT failed, err = %d\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+static irqreturn_t tps80031_rtc_irq(int irq, void *data)
+{
+	struct device *dev = data;
+	struct tps80031_rtc *rtc = dev_get_drvdata(dev);
+	int ret;
+
+	ret = clear_alarm_int_status(dev, rtc);
+	if (ret < 0)
+		return ret;
+
+	rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_AF);
+	return IRQ_HANDLED;
+}
+
+static const struct rtc_class_ops tps80031_rtc_ops = {
+	.read_time = tps80031_rtc_read_time,
+	.set_time = tps80031_rtc_set_time,
+	.set_alarm = tps80031_rtc_set_alarm,
+	.read_alarm = tps80031_rtc_read_alarm,
+	.alarm_irq_enable = tps80031_rtc_alarm_irq_enable,
+};
+
+static int tps80031_rtc_probe(struct platform_device *pdev)
+{
+	struct tps80031_rtc *rtc;
+	struct rtc_time tm;
+	int ret;
+
+	rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
+	if (!rtc)
+		return -ENOMEM;
+
+	rtc->irq = platform_get_irq(pdev, 0);
+	platform_set_drvdata(pdev, rtc);
+
+	/* Start RTC */
+	ret = tps80031_set_bits(pdev->dev.parent, TPS80031_SLAVE_ID1,
+			TPS80031_RTC_CTRL_REG, STOP_RTC);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to start RTC. err = %d\n", ret);
+		return ret;
+	}
+
+	/* If RTC have POR values, set time 01:01:2000 */
+	tps80031_rtc_read_time(&pdev->dev, &tm);
+	if ((tm.tm_year == RTC_YEAR_OFFSET + TPS80031_RTC_POR_YEAR) &&
+		(tm.tm_mon == (TPS80031_RTC_POR_MONTH - 1)) &&
+		(tm.tm_mday == TPS80031_RTC_POR_DAY)) {
+		tm.tm_year = 2000;
+		tm.tm_mday = 1;
+		tm.tm_mon = 1;
+		ret = tps80031_rtc_set_time(&pdev->dev, &tm);
+		if (ret < 0) {
+			dev_err(&pdev->dev,
+				"RTC set time failed, err = %d\n", ret);
+			return ret;
+		}
+	}
+
+	/* Clear alarm intretupt status if it is there */
+	ret = clear_alarm_int_status(&pdev->dev, rtc);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Clear alarm int failed, err = %d\n", ret);
+		return ret;
+	}
+
+	rtc->rtc = rtc_device_register(pdev->name, &pdev->dev,
+			       &tps80031_rtc_ops, THIS_MODULE);
+	if (IS_ERR(rtc->rtc)) {
+		ret = PTR_ERR(rtc->rtc);
+		dev_err(&pdev->dev, "RTC registration failed, err %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
+			tps80031_rtc_irq,
+			IRQF_ONESHOT | IRQF_EARLY_RESUME,
+			dev_name(&pdev->dev), rtc);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "request IRQ:%d failed, err = %d\n",
+			 rtc->irq, ret);
+		rtc_device_unregister(rtc->rtc);
+		return ret;
+	}
+	device_set_wakeup_capable(&pdev->dev, 1);
+	return 0;
+}
+
+static int tps80031_rtc_remove(struct platform_device *pdev)
+{
+	struct tps80031_rtc *rtc = platform_get_drvdata(pdev);
+
+	rtc_device_unregister(rtc->rtc);
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int tps80031_rtc_suspend(struct device *dev)
+{
+	struct tps80031_rtc *rtc = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		enable_irq_wake(rtc->irq);
+	return 0;
+}
+
+static int tps80031_rtc_resume(struct device *dev)
+{
+	struct tps80031_rtc *rtc = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		disable_irq_wake(rtc->irq);
+	return 0;
+};
+#endif
+
+static const struct dev_pm_ops tps80031_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(tps80031_rtc_suspend, tps80031_rtc_resume)
+};
+
+static struct platform_driver tps80031_rtc_driver = {
+	.driver	= {
+		.name	= "tps80031-rtc",
+		.owner	= THIS_MODULE,
+		.pm	= &tps80031_pm_ops,
+	},
+	.probe	= tps80031_rtc_probe,
+	.remove	= tps80031_rtc_remove,
+};
+
+module_platform_driver(tps80031_rtc_driver);
+
+MODULE_ALIAS("platform:tps80031-rtc");
+MODULE_DESCRIPTION("TI TPS80031/TPS80032 RTC driver");
+MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
+MODULE_LICENSE("GPL v2");

drivers/rtc/rtc-twl.c

@@ -27,6 +27,7 @@
 #include <linux/bcd.h>
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
+#include <linux/of.h>
 
 #include <linux/i2c/twl.h>
 
@@ -588,11 +589,14 @@ static int twl_rtc_resume(struct platform_device *pdev)
 #define twl_rtc_resume  NULL
 #endif
 
+#ifdef CONFIG_OF
 static const struct of_device_id twl_rtc_of_match[] = {
 	{.compatible = "ti,twl4030-rtc", },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, twl_rtc_of_match);
+#endif
+
 MODULE_ALIAS("platform:twl_rtc");
 
 static struct platform_driver twl4030rtc_driver = {
@@ -604,7 +608,7 @@ static struct platform_driver twl4030rtc_driver = {
 	.driver		= {
 		.owner		= THIS_MODULE,
 		.name		= "twl_rtc",
-		.of_match_table = twl_rtc_of_match,
+		.of_match_table = of_match_ptr(twl_rtc_of_match),
 	},
 };
 

drivers/rtc/rtc-vr41xx.c

@@ -352,7 +352,7 @@ static int rtc_probe(struct platform_device *pdev)
 	disable_irq(aie_irq);
 	disable_irq(pie_irq);
 
-	printk(KERN_INFO "rtc: Real Time Clock of NEC VR4100 series\n");
+	dev_info(&pdev->dev, "Real Time Clock of NEC VR4100 series\n");
 
 	return 0;
 

drivers/rtc/rtc-vt8500.c

@@ -231,20 +231,21 @@ static int vt8500_rtc_probe(struct platform_device *pdev)
 		return -ENXIO;
 	}
 
-	vt8500_rtc->res = request_mem_region(vt8500_rtc->res->start,
-					     resource_size(vt8500_rtc->res),
-					     "vt8500-rtc");
+	vt8500_rtc->res = devm_request_mem_region(&pdev->dev,
+					vt8500_rtc->res->start,
+					resource_size(vt8500_rtc->res),
+					"vt8500-rtc");
 	if (vt8500_rtc->res == NULL) {
 		dev_err(&pdev->dev, "failed to request I/O memory\n");
 		return -EBUSY;
 	}
 
-	vt8500_rtc->regbase = ioremap(vt8500_rtc->res->start,
+	vt8500_rtc->regbase = devm_ioremap(&pdev->dev, vt8500_rtc->res->start,
 				      resource_size(vt8500_rtc->res));
 	if (!vt8500_rtc->regbase) {
 		dev_err(&pdev->dev, "Unable to map RTC I/O memory\n");
 		ret = -EBUSY;
-		goto err_release;
+		goto err_return;
 	}
 
 	/* Enable RTC and set it to 24-hour mode */
@@ -257,11 +258,11 @@ static int vt8500_rtc_probe(struct platform_device *pdev)
 		ret = PTR_ERR(vt8500_rtc->rtc);
 		dev_err(&pdev->dev,
 			"Failed to register RTC device -> %d\n", ret);
-		goto err_unmap;
+		goto err_return;
 	}
 
-	ret = request_irq(vt8500_rtc->irq_alarm, vt8500_rtc_irq, 0,
-			  "rtc alarm", vt8500_rtc);
+	ret = devm_request_irq(&pdev->dev, vt8500_rtc->irq_alarm,
+				vt8500_rtc_irq, 0, "rtc alarm", vt8500_rtc);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "can't get irq %i, err %d\n",
 			vt8500_rtc->irq_alarm, ret);
@@ -272,11 +273,7 @@ static int vt8500_rtc_probe(struct platform_device *pdev)
 
 err_unreg:
 	rtc_device_unregister(vt8500_rtc->rtc);
-err_unmap:
-	iounmap(vt8500_rtc->regbase);
-err_release:
-	release_mem_region(vt8500_rtc->res->start,
-			   resource_size(vt8500_rtc->res));
+err_return:
 	return ret;
 }
 
@@ -284,15 +281,10 @@ static int vt8500_rtc_remove(struct platform_device *pdev)
 {
 	struct vt8500_rtc *vt8500_rtc = platform_get_drvdata(pdev);
 
-	free_irq(vt8500_rtc->irq_alarm, vt8500_rtc);
-
 	rtc_device_unregister(vt8500_rtc->rtc);
 
 	/* Disable alarm matching */
 	writel(0, vt8500_rtc->regbase + VT8500_RTC_IS);
-	iounmap(vt8500_rtc->regbase);
-	release_mem_region(vt8500_rtc->res->start,
-			   resource_size(vt8500_rtc->res));
 
 	platform_set_drvdata(pdev, NULL);
 

drivers/rtc/rtc-wm831x.c

@@ -443,9 +443,10 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	ret = request_threaded_irq(alm_irq, NULL, wm831x_alm_irq,
-				   IRQF_TRIGGER_RISING, "RTC alarm",
-				   wm831x_rtc);
+	ret = devm_request_threaded_irq(&pdev->dev, alm_irq, NULL,
+				wm831x_alm_irq,
+				IRQF_TRIGGER_RISING, "RTC alarm",
+				wm831x_rtc);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n",
 			alm_irq, ret);
@@ -462,9 +463,7 @@ err:
 static int wm831x_rtc_remove(struct platform_device *pdev)
 {
 	struct wm831x_rtc *wm831x_rtc = platform_get_drvdata(pdev);
-	int alm_irq = platform_get_irq_byname(pdev, "ALM");
 
-	free_irq(alm_irq, wm831x_rtc);
 	rtc_device_unregister(wm831x_rtc->rtc);
 
 	return 0;

drivers/video/Kconfig

@@ -364,7 +364,7 @@ config FB_SA1100
 	  Y here.
 
 config FB_IMX
-	tristate "Freescale i.MX LCD support"
+	tristate "Freescale i.MX1/21/25/27 LCD support"
 	depends on FB && IMX_HAVE_PLATFORM_IMX_FB
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
@@ -2025,7 +2025,8 @@ config FB_TMIO_ACCELL
 
 config FB_S3C
 	tristate "Samsung S3C framebuffer support"
-	depends on FB && (S3C_DEV_FB || S5P_DEV_FIMD0)
+	depends on FB && (CPU_S3C2416 || ARCH_S3C64XX || ARCH_S5P64X0 || \
+		ARCH_S5PC100 || ARCH_S5PV210 || ARCH_EXYNOS)
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
@@ -2183,6 +2184,15 @@ config FB_XILINX
 	  framebuffer. ML300 carries a 640*480 LCD display on the board,
 	  ML403 uses a standard DB15 VGA connector.
 
+config FB_GOLDFISH
+	tristate "Goldfish Framebuffer"
+	depends on FB
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	---help---
+	  Framebuffer driver for Goldfish Virtual Platform
+
 config FB_COBALT
 	tristate "Cobalt server LCD frame buffer support"
 	depends on FB && (MIPS_COBALT || MIPS_SEAD3)
@@ -2422,6 +2432,7 @@ config FB_PUV3_UNIGFX
 source "drivers/video/omap/Kconfig"
 source "drivers/video/omap2/Kconfig"
 source "drivers/video/exynos/Kconfig"
+source "drivers/video/mmp/Kconfig"
 source "drivers/video/backlight/Kconfig"
 
 if VT

drivers/video/Makefile

@@ -98,6 +98,7 @@ obj-$(CONFIG_FB_ATMEL)		  += atmel_lcdfb.o
 obj-$(CONFIG_FB_PVR2)             += pvr2fb.o
 obj-$(CONFIG_FB_VOODOO1)          += sstfb.o
 obj-$(CONFIG_FB_ARMCLCD)	  += amba-clcd.o
+obj-$(CONFIG_FB_GOLDFISH)         += goldfishfb.o
 obj-$(CONFIG_FB_68328)            += 68328fb.o
 obj-$(CONFIG_FB_GBE)              += gbefb.o
 obj-$(CONFIG_FB_CIRRUS)		  += cirrusfb.o
@@ -105,6 +106,7 @@ obj-$(CONFIG_FB_ASILIANT)	  += asiliantfb.o
 obj-$(CONFIG_FB_PXA)		  += pxafb.o
 obj-$(CONFIG_FB_PXA168)		  += pxa168fb.o
 obj-$(CONFIG_PXA3XX_GCU)	  += pxa3xx-gcu.o
+obj-$(CONFIG_MMP_DISP)           += mmp/
 obj-$(CONFIG_FB_W100)		  += w100fb.o
 obj-$(CONFIG_FB_TMIO)		  += tmiofb.o
 obj-$(CONFIG_FB_AU1100)		  += au1100fb.o

drivers/video/backlight/88pm860x_bl.c

@@ -165,8 +165,10 @@ static int pm860x_backlight_dt_init(struct platform_device *pdev,
 				    struct pm860x_backlight_data *data,
 				    char *name)
 {
-	struct device_node *nproot = pdev->dev.parent->of_node, *np;
+	struct device_node *nproot, *np;
 	int iset = 0;
+
+	nproot = of_node_get(pdev->dev.parent->of_node);
 	if (!nproot)
 		return -ENODEV;
 	nproot = of_find_node_by_name(nproot, "backlights");
@@ -184,6 +186,7 @@ static int pm860x_backlight_dt_init(struct platform_device *pdev,
 			break;
 		}
 	}
+	of_node_put(nproot);
 	return 0;
 }
 #else

drivers/video/backlight/Kconfig

@@ -126,6 +126,21 @@ config LCD_AMS369FG06
 	  If you have an AMS369FG06 AMOLED Panel, say Y to enable its
 	  LCD control driver.
 
+config LCD_LMS501KF03
+	tristate "LMS501KF03 LCD Driver"
+	depends on SPI
+	default n
+	help
+	  If you have an LMS501KF03 LCD Panel, say Y to enable its
+	  LCD control driver.
+
+config LCD_HX8357
+	tristate "Himax HX-8357 LCD Driver"
+	depends on SPI
+	help
+	  If you have a HX-8357 LCD panel, say Y to enable its LCD control
+	  driver.
+
 endif # LCD_CLASS_DEVICE
 
 #
@@ -366,7 +381,7 @@ config BACKLIGHT_LP855X
 	tristate "Backlight driver for TI LP855X"
 	depends on BACKLIGHT_CLASS_DEVICE && I2C
 	help
-	  This supports TI LP8550, LP8551, LP8552, LP8553 and LP8556
+	  This supports TI LP8550, LP8551, LP8552, LP8553, LP8556 and LP8557
 	  backlight driver.
 
 config BACKLIGHT_OT200
@@ -390,6 +405,13 @@ config BACKLIGHT_TPS65217
 	  If you have a Texas Instruments TPS65217 say Y to enable the
 	  backlight driver.
 
+config BACKLIGHT_AS3711
+	tristate "AS3711 Backlight"
+	depends on BACKLIGHT_CLASS_DEVICE && MFD_AS3711
+	help
+	  If you have an Austrian Microsystems AS3711 say Y to enable the
+	  backlight driver.
+
 endif # BACKLIGHT_CLASS_DEVICE
 
 endif # BACKLIGHT_LCD_SUPPORT

drivers/video/backlight/Makefile

@@ -1,47 +1,50 @@
 # Backlight & LCD drivers
 
-obj-$(CONFIG_LCD_CLASS_DEVICE)     += lcd.o
-obj-$(CONFIG_LCD_CORGI)		   += corgi_lcd.o
-obj-$(CONFIG_LCD_HP700)		   += jornada720_lcd.o
-obj-$(CONFIG_LCD_L4F00242T03)	   += l4f00242t03.o
-obj-$(CONFIG_LCD_LMS283GF05)	   += lms283gf05.o
-obj-$(CONFIG_LCD_LTV350QV)	   += ltv350qv.o
-obj-$(CONFIG_LCD_ILI9320)	   += ili9320.o
-obj-$(CONFIG_LCD_PLATFORM)	   += platform_lcd.o
-obj-$(CONFIG_LCD_VGG2432A4)	   += vgg2432a4.o
-obj-$(CONFIG_LCD_TDO24M)	   += tdo24m.o
-obj-$(CONFIG_LCD_TOSA)		   += tosa_lcd.o
-obj-$(CONFIG_LCD_S6E63M0)	+= s6e63m0.o
-obj-$(CONFIG_LCD_LD9040)	+= ld9040.o
-obj-$(CONFIG_LCD_AMS369FG06)	+= ams369fg06.o
+obj-$(CONFIG_LCD_AMS369FG06)		+= ams369fg06.o
+obj-$(CONFIG_LCD_CLASS_DEVICE)		+= lcd.o
+obj-$(CONFIG_LCD_CORGI)			+= corgi_lcd.o
+obj-$(CONFIG_LCD_HP700)			+= jornada720_lcd.o
+obj-$(CONFIG_LCD_HX8357)		+= hx8357.o
+obj-$(CONFIG_LCD_ILI9320)		+= ili9320.o
+obj-$(CONFIG_LCD_L4F00242T03)		+= l4f00242t03.o
+obj-$(CONFIG_LCD_LD9040)		+= ld9040.o
+obj-$(CONFIG_LCD_LMS283GF05)		+= lms283gf05.o
+obj-$(CONFIG_LCD_LMS501KF03)		+= lms501kf03.o
+obj-$(CONFIG_LCD_LTV350QV)		+= ltv350qv.o
+obj-$(CONFIG_LCD_PLATFORM)		+= platform_lcd.o
+obj-$(CONFIG_LCD_S6E63M0)		+= s6e63m0.o
+obj-$(CONFIG_LCD_TDO24M)		+= tdo24m.o
+obj-$(CONFIG_LCD_TOSA)			+= tosa_lcd.o
+obj-$(CONFIG_LCD_VGG2432A4)		+= vgg2432a4.o
 
-obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
-obj-$(CONFIG_BACKLIGHT_ATMEL_PWM)    += atmel-pwm-bl.o
-obj-$(CONFIG_BACKLIGHT_EP93XX)	+= ep93xx_bl.o
-obj-$(CONFIG_BACKLIGHT_GENERIC)	+= generic_bl.o
-obj-$(CONFIG_BACKLIGHT_HP700)	+= jornada720_bl.o
-obj-$(CONFIG_BACKLIGHT_HP680)	+= hp680_bl.o
-obj-$(CONFIG_BACKLIGHT_LM3533)	+= lm3533_bl.o
-obj-$(CONFIG_BACKLIGHT_LOCOMO)	+= locomolcd.o
-obj-$(CONFIG_BACKLIGHT_LM3630)	+= lm3630_bl.o
-obj-$(CONFIG_BACKLIGHT_LM3639)	+= lm3639_bl.o
-obj-$(CONFIG_BACKLIGHT_LP855X)	+= lp855x_bl.o
-obj-$(CONFIG_BACKLIGHT_OMAP1)	+= omap1_bl.o
-obj-$(CONFIG_BACKLIGHT_PANDORA)	+= pandora_bl.o
-obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o
-obj-$(CONFIG_BACKLIGHT_PWM)	+= pwm_bl.o
-obj-$(CONFIG_BACKLIGHT_DA903X)	+= da903x_bl.o
-obj-$(CONFIG_BACKLIGHT_DA9052)	+= da9052_bl.o
-obj-$(CONFIG_BACKLIGHT_MAX8925)	+= max8925_bl.o
-obj-$(CONFIG_BACKLIGHT_APPLE)	+= apple_bl.o
-obj-$(CONFIG_BACKLIGHT_TOSA)	+= tosa_bl.o
-obj-$(CONFIG_BACKLIGHT_SAHARA)	+= kb3886_bl.o
-obj-$(CONFIG_BACKLIGHT_WM831X)	+= wm831x_bl.o
-obj-$(CONFIG_BACKLIGHT_ADP5520)	+= adp5520_bl.o
-obj-$(CONFIG_BACKLIGHT_ADP8860)	+= adp8860_bl.o
-obj-$(CONFIG_BACKLIGHT_ADP8870)	+= adp8870_bl.o
-obj-$(CONFIG_BACKLIGHT_88PM860X) += 88pm860x_bl.o
+obj-$(CONFIG_BACKLIGHT_88PM860X)	+= 88pm860x_bl.o
+obj-$(CONFIG_BACKLIGHT_AAT2870)		+= aat2870_bl.o
+obj-$(CONFIG_BACKLIGHT_ADP5520)		+= adp5520_bl.o
+obj-$(CONFIG_BACKLIGHT_ADP8860)		+= adp8860_bl.o
+obj-$(CONFIG_BACKLIGHT_ADP8870)		+= adp8870_bl.o
+obj-$(CONFIG_BACKLIGHT_APPLE)		+= apple_bl.o
+obj-$(CONFIG_BACKLIGHT_AS3711)		+= as3711_bl.o
+obj-$(CONFIG_BACKLIGHT_ATMEL_PWM)	+= atmel-pwm-bl.o
+obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH)	+= cr_bllcd.o
+obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE)	+= backlight.o
+obj-$(CONFIG_BACKLIGHT_DA903X)		+= da903x_bl.o
+obj-$(CONFIG_BACKLIGHT_DA9052)		+= da9052_bl.o
+obj-$(CONFIG_BACKLIGHT_EP93XX)		+= ep93xx_bl.o
+obj-$(CONFIG_BACKLIGHT_GENERIC)		+= generic_bl.o
+obj-$(CONFIG_BACKLIGHT_HP680)		+= hp680_bl.o
+obj-$(CONFIG_BACKLIGHT_HP700)		+= jornada720_bl.o
+obj-$(CONFIG_BACKLIGHT_LM3533)		+= lm3533_bl.o
+obj-$(CONFIG_BACKLIGHT_LM3630)		+= lm3630_bl.o
+obj-$(CONFIG_BACKLIGHT_LM3639)		+= lm3639_bl.o
+obj-$(CONFIG_BACKLIGHT_LOCOMO)		+= locomolcd.o
+obj-$(CONFIG_BACKLIGHT_LP855X)		+= lp855x_bl.o
+obj-$(CONFIG_BACKLIGHT_MAX8925)		+= max8925_bl.o
+obj-$(CONFIG_BACKLIGHT_OMAP1)		+= omap1_bl.o
+obj-$(CONFIG_BACKLIGHT_OT200)		+= ot200_bl.o
+obj-$(CONFIG_BACKLIGHT_PANDORA)		+= pandora_bl.o
 obj-$(CONFIG_BACKLIGHT_PCF50633)	+= pcf50633-backlight.o
-obj-$(CONFIG_BACKLIGHT_AAT2870) += aat2870_bl.o
-obj-$(CONFIG_BACKLIGHT_OT200) += ot200_bl.o
-obj-$(CONFIG_BACKLIGHT_TPS65217) += tps65217_bl.o
+obj-$(CONFIG_BACKLIGHT_PWM)		+= pwm_bl.o
+obj-$(CONFIG_BACKLIGHT_SAHARA)		+= kb3886_bl.o
+obj-$(CONFIG_BACKLIGHT_TOSA)		+= tosa_bl.o
+obj-$(CONFIG_BACKLIGHT_TPS65217)	+= tps65217_bl.o
+obj-$(CONFIG_BACKLIGHT_WM831X)		+= wm831x_bl.o

drivers/video/backlight/aat2870_bl.c

@@ -74,7 +74,7 @@ static int aat2870_bl_get_brightness(struct backlight_device *bd)
 
 static int aat2870_bl_update_status(struct backlight_device *bd)
 {
-	struct aat2870_bl_driver_data *aat2870_bl = dev_get_drvdata(&bd->dev);
+	struct aat2870_bl_driver_data *aat2870_bl = bl_get_data(bd);
 	struct aat2870_data *aat2870 =
 			dev_get_drvdata(aat2870_bl->pdev->dev.parent);
 	int brightness = bd->props.brightness;

drivers/video/backlight/adp8860_bl.c

@@ -783,7 +783,7 @@ static int adp8860_i2c_suspend(struct i2c_client *client, pm_message_t message)
 
 static int adp8860_i2c_resume(struct i2c_client *client)
 {
-	adp8860_set_bits(client, ADP8860_MDCR, NSTBY);
+	adp8860_set_bits(client, ADP8860_MDCR, NSTBY | BLEN);
 
 	return 0;
 }

drivers/video/backlight/adp8870_bl.c

@@ -957,7 +957,7 @@ static int adp8870_i2c_suspend(struct i2c_client *client, pm_message_t message)
 
 static int adp8870_i2c_resume(struct i2c_client *client)
 {
-	adp8870_set_bits(client, ADP8870_MDCR, NSTBY);
+	adp8870_set_bits(client, ADP8870_MDCR, NSTBY | BLEN);
 
 	return 0;
 }

drivers/video/backlight/ams369fg06.c

@@ -10,25 +10,16 @@
  * under the terms of the GNU General Public License as published by the
  * Free Software Foundation; either version 2 of the License, or (at your
  * option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
-#include <linux/wait.h>
-#include <linux/module.h>
-#include <linux/fb.h>
+#include <linux/backlight.h>
 #include <linux/delay.h>
+#include <linux/fb.h>
 #include <linux/gpio.h>
-#include <linux/spi/spi.h>
 #include <linux/lcd.h>
-#include <linux/backlight.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <linux/wait.h>
 
 #define SLEEPMSEC		0x1000
 #define ENDDEF			0x2000
@@ -210,8 +201,9 @@ static int ams369fg06_panel_send_sequence(struct ams369fg06 *lcd,
 			ret = ams369fg06_spi_write(lcd, wbuf[i], wbuf[i+1]);
 			if (ret)
 				break;
-		} else
-			mdelay(wbuf[i+1]);
+		} else {
+			msleep(wbuf[i+1]);
+		}
 		i += 2;
 	}
 
@@ -313,41 +305,32 @@ static int ams369fg06_ldi_disable(struct ams369fg06 *lcd)
 
 static int ams369fg06_power_is_on(int power)
 {
-	return ((power) <= FB_BLANK_NORMAL);
+	return power <= FB_BLANK_NORMAL;
 }
 
 static int ams369fg06_power_on(struct ams369fg06 *lcd)
 {
 	int ret = 0;
-	struct lcd_platform_data *pd = NULL;
-	struct backlight_device *bd = NULL;
+	struct lcd_platform_data *pd;
+	struct backlight_device *bd;
 
 	pd = lcd->lcd_pd;
-	if (!pd) {
-		dev_err(lcd->dev, "platform data is NULL.\n");
-		return -EFAULT;
-	}
-
 	bd = lcd->bd;
-	if (!bd) {
-		dev_err(lcd->dev, "backlight device is NULL.\n");
-		return -EFAULT;
-	}
 
 	if (!pd->power_on) {
 		dev_err(lcd->dev, "power_on is NULL.\n");
-		return -EFAULT;
+		return -EINVAL;
 	} else {
 		pd->power_on(lcd->ld, 1);
-		mdelay(pd->power_on_delay);
+		msleep(pd->power_on_delay);
 	}
 
 	if (!pd->reset) {
 		dev_err(lcd->dev, "reset is NULL.\n");
-		return -EFAULT;
+		return -EINVAL;
 	} else {
 		pd->reset(lcd->ld);
-		mdelay(pd->reset_delay);
+		msleep(pd->reset_delay);
 	}
 
 	ret = ams369fg06_ldi_init(lcd);
@@ -374,14 +357,10 @@ static int ams369fg06_power_on(struct ams369fg06 *lcd)
 
 static int ams369fg06_power_off(struct ams369fg06 *lcd)
 {
-	int ret = 0;
-	struct lcd_platform_data *pd = NULL;
+	int ret;
+	struct lcd_platform_data *pd;
 
 	pd = lcd->lcd_pd;
-	if (!pd) {
-		dev_err(lcd->dev, "platform data is NULL\n");
-		return -EFAULT;
-	}
 
 	ret = ams369fg06_ldi_disable(lcd);
 	if (ret) {
@@ -389,13 +368,9 @@ static int ams369fg06_power_off(struct ams369fg06 *lcd)
 		return -EIO;
 	}
 
-	mdelay(pd->power_off_delay);
+	msleep(pd->power_off_delay);
 
-	if (!pd->power_on) {
-		dev_err(lcd->dev, "power_on is NULL.\n");
-		return -EFAULT;
-	} else
-		pd->power_on(lcd->ld, 0);
+	pd->power_on(lcd->ld, 0);
 
 	return 0;
 }
@@ -446,7 +421,7 @@ static int ams369fg06_set_brightness(struct backlight_device *bd)
 {
 	int ret = 0;
 	int brightness = bd->props.brightness;
-	struct ams369fg06 *lcd = dev_get_drvdata(&bd->dev);
+	struct ams369fg06 *lcd = bl_get_data(bd);
 
 	if (brightness < MIN_BRIGHTNESS ||
 		brightness > bd->props.max_brightness) {
@@ -501,7 +476,7 @@ static int ams369fg06_probe(struct spi_device *spi)
 	lcd->lcd_pd = spi->dev.platform_data;
 	if (!lcd->lcd_pd) {
 		dev_err(&spi->dev, "platform data is NULL\n");
-		return -EFAULT;
+		return -EINVAL;
 	}
 
 	ld = lcd_device_register("ams369fg06", &spi->dev, lcd,
@@ -534,10 +509,11 @@ static int ams369fg06_probe(struct spi_device *spi)
 		lcd->power = FB_BLANK_POWERDOWN;
 
 		ams369fg06_power(lcd, FB_BLANK_UNBLANK);
-	} else
+	} else {
 		lcd->power = FB_BLANK_UNBLANK;
+	}
 
-	dev_set_drvdata(&spi->dev, lcd);
+	spi_set_drvdata(spi, lcd);
 
 	dev_info(&spi->dev, "ams369fg06 panel driver has been probed.\n");
 
@@ -550,7 +526,7 @@ out_lcd_unregister:
 
 static int ams369fg06_remove(struct spi_device *spi)
 {
-	struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev);
+	struct ams369fg06 *lcd = spi_get_drvdata(spi);
 
 	ams369fg06_power(lcd, FB_BLANK_POWERDOWN);
 	backlight_device_unregister(lcd->bd);
@@ -560,44 +536,26 @@ static int ams369fg06_remove(struct spi_device *spi)
 }
 
 #if defined(CONFIG_PM)
-static unsigned int before_power;
-
 static int ams369fg06_suspend(struct spi_device *spi, pm_message_t mesg)
 {
-	int ret = 0;
-	struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev);
+	struct ams369fg06 *lcd = spi_get_drvdata(spi);
 
 	dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power);
 
-	before_power = lcd->power;
-
 	/*
 	 * when lcd panel is suspend, lcd panel becomes off
 	 * regardless of status.
 	 */
-	ret = ams369fg06_power(lcd, FB_BLANK_POWERDOWN);
-
-	return ret;
+	return ams369fg06_power(lcd, FB_BLANK_POWERDOWN);
 }
 
 static int ams369fg06_resume(struct spi_device *spi)
 {
-	int ret = 0;
-	struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev);
+	struct ams369fg06 *lcd = spi_get_drvdata(spi);
 
-	/*
-	 * after suspended, if lcd panel status is FB_BLANK_UNBLANK
-	 * (at that time, before_power is FB_BLANK_UNBLANK) then
-	 * it changes that status to FB_BLANK_POWERDOWN to get lcd on.
-	 */
-	if (before_power == FB_BLANK_UNBLANK)
-		lcd->power = FB_BLANK_POWERDOWN;
-
-	dev_dbg(&spi->dev, "before_power = %d\n", before_power);
+	lcd->power = FB_BLANK_POWERDOWN;
 
-	ret = ams369fg06_power(lcd, before_power);
-
-	return ret;
+	return ams369fg06_power(lcd, FB_BLANK_UNBLANK);
 }
 #else
 #define ams369fg06_suspend	NULL
@@ -606,7 +564,7 @@ static int ams369fg06_resume(struct spi_device *spi)
 
 static void ams369fg06_shutdown(struct spi_device *spi)
 {
-	struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev);
+	struct ams369fg06 *lcd = spi_get_drvdata(spi);
 
 	ams369fg06_power(lcd, FB_BLANK_POWERDOWN);
 }

drivers/video/backlight/as3711_bl.c

@@ -0,0 +1,380 @@
+/*
+ * AS3711 PMIC backlight driver, using DCDC Step Up Converters
+ *
+ * Copyright (C) 2012 Renesas Electronics Corporation
+ * Author: Guennadi Liakhovetski, <g.liakhovetski@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the version 2 of the GNU General Public License as
+ * published by the Free Software Foundation
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/kernel.h>
+#include <linux/mfd/as3711.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+enum as3711_bl_type {
+	AS3711_BL_SU1,
+	AS3711_BL_SU2,
+};
+
+struct as3711_bl_data {
+	bool powered;
+	const char *fb_name;
+	struct device *fb_dev;
+	enum as3711_bl_type type;
+	int brightness;
+	struct backlight_device *bl;
+};
+
+struct as3711_bl_supply {
+	struct as3711_bl_data su1;
+	struct as3711_bl_data su2;
+	const struct as3711_bl_pdata *pdata;
+	struct as3711 *as3711;
+};
+
+static struct as3711_bl_supply *to_supply(struct as3711_bl_data *su)
+{
+	switch (su->type) {
+	case AS3711_BL_SU1:
+		return container_of(su, struct as3711_bl_supply, su1);
+	case AS3711_BL_SU2:
+		return container_of(su, struct as3711_bl_supply, su2);
+	}
+	return NULL;
+}
+
+static int as3711_set_brightness_auto_i(struct as3711_bl_data *data,
+					unsigned int brightness)
+{
+	struct as3711_bl_supply *supply = to_supply(data);
+	struct as3711 *as3711 = supply->as3711;
+	const struct as3711_bl_pdata *pdata = supply->pdata;
+	int ret = 0;
+
+	/* Only all equal current values are supported */
+	if (pdata->su2_auto_curr1)
+		ret = regmap_write(as3711->regmap, AS3711_CURR1_VALUE,
+				   brightness);
+	if (!ret && pdata->su2_auto_curr2)
+		ret = regmap_write(as3711->regmap, AS3711_CURR2_VALUE,
+				   brightness);
+	if (!ret && pdata->su2_auto_curr3)
+		ret = regmap_write(as3711->regmap, AS3711_CURR3_VALUE,
+				   brightness);
+
+	return ret;
+}
+
+static int as3711_set_brightness_v(struct as3711 *as3711,
+				   unsigned int brightness,
+				   unsigned int reg)
+{
+	if (brightness > 31)
+		return -EINVAL;
+
+	return regmap_update_bits(as3711->regmap, reg, 0xf0,
+				  brightness << 4);
+}
+
+static int as3711_bl_su2_reset(struct as3711_bl_supply *supply)
+{
+	struct as3711 *as3711 = supply->as3711;
+	int ret = regmap_update_bits(as3711->regmap, AS3711_STEPUP_CONTROL_5,
+				     3, supply->pdata->su2_fbprot);
+	if (!ret)
+		ret = regmap_update_bits(as3711->regmap,
+					 AS3711_STEPUP_CONTROL_2, 1, 0);
+	if (!ret)
+		ret = regmap_update_bits(as3711->regmap,
+					 AS3711_STEPUP_CONTROL_2, 1, 1);
+	return ret;
+}
+
+/*
+ * Someone with less fragile or less expensive hardware could try to simplify
+ * the brightness adjustment procedure.
+ */
+static int as3711_bl_update_status(struct backlight_device *bl)
+{
+	struct as3711_bl_data *data = bl_get_data(bl);
+	struct as3711_bl_supply *supply = to_supply(data);
+	struct as3711 *as3711 = supply->as3711;
+	int brightness = bl->props.brightness;
+	int ret = 0;
+
+	dev_dbg(&bl->dev, "%s(): brightness %u, pwr %x, blank %x, state %x\n",
+		__func__, bl->props.brightness, bl->props.power,
+		bl->props.fb_blank, bl->props.state);
+
+	if (bl->props.power != FB_BLANK_UNBLANK ||
+	    bl->props.fb_blank != FB_BLANK_UNBLANK ||
+	    bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
+		brightness = 0;
+
+	if (data->type == AS3711_BL_SU1) {
+		ret = as3711_set_brightness_v(as3711, brightness,
+					      AS3711_STEPUP_CONTROL_1);
+	} else {
+		const struct as3711_bl_pdata *pdata = supply->pdata;
+
+		switch (pdata->su2_feedback) {
+		case AS3711_SU2_VOLTAGE:
+			ret = as3711_set_brightness_v(as3711, brightness,
+						      AS3711_STEPUP_CONTROL_2);
+			break;
+		case AS3711_SU2_CURR_AUTO:
+			ret = as3711_set_brightness_auto_i(data, brightness / 4);
+			if (ret < 0)
+				return ret;
+			if (brightness) {
+				ret = as3711_bl_su2_reset(supply);
+				if (ret < 0)
+					return ret;
+				udelay(500);
+				ret = as3711_set_brightness_auto_i(data, brightness);
+			} else {
+				ret = regmap_update_bits(as3711->regmap,
+						AS3711_STEPUP_CONTROL_2, 1, 0);
+			}
+			break;
+		/* Manual one current feedback pin below */
+		case AS3711_SU2_CURR1:
+			ret = regmap_write(as3711->regmap, AS3711_CURR1_VALUE,
+					   brightness);
+			break;
+		case AS3711_SU2_CURR2:
+			ret = regmap_write(as3711->regmap, AS3711_CURR2_VALUE,
+					   brightness);
+			break;
+		case AS3711_SU2_CURR3:
+			ret = regmap_write(as3711->regmap, AS3711_CURR3_VALUE,
+					   brightness);
+			break;
+		default:
+			ret = -EINVAL;
+		}
+	}
+	if (!ret)
+		data->brightness = brightness;
+
+	return ret;
+}
+
+static int as3711_bl_get_brightness(struct backlight_device *bl)
+{
+	struct as3711_bl_data *data = bl_get_data(bl);
+
+	return data->brightness;
+}
+
+static const struct backlight_ops as3711_bl_ops = {
+	.update_status	= as3711_bl_update_status,
+	.get_brightness	= as3711_bl_get_brightness,
+};
+
+static int as3711_bl_init_su2(struct as3711_bl_supply *supply)
+{
+	struct as3711 *as3711 = supply->as3711;
+	const struct as3711_bl_pdata *pdata = supply->pdata;
+	u8 ctl = 0;
+	int ret;
+
+	dev_dbg(as3711->dev, "%s(): use %u\n", __func__, pdata->su2_feedback);
+
+	/* Turn SU2 off */
+	ret = regmap_write(as3711->regmap, AS3711_STEPUP_CONTROL_2, 0);
+	if (ret < 0)
+		return ret;
+
+	switch (pdata->su2_feedback) {
+	case AS3711_SU2_VOLTAGE:
+		ret = regmap_update_bits(as3711->regmap, AS3711_STEPUP_CONTROL_4, 3, 0);
+		break;
+	case AS3711_SU2_CURR1:
+		ctl = 1;
+		ret = regmap_update_bits(as3711->regmap, AS3711_STEPUP_CONTROL_4, 3, 1);
+		break;
+	case AS3711_SU2_CURR2:
+		ctl = 4;
+		ret = regmap_update_bits(as3711->regmap, AS3711_STEPUP_CONTROL_4, 3, 2);
+		break;
+	case AS3711_SU2_CURR3:
+		ctl = 0x10;
+		ret = regmap_update_bits(as3711->regmap, AS3711_STEPUP_CONTROL_4, 3, 3);
+		break;
+	case AS3711_SU2_CURR_AUTO:
+		if (pdata->su2_auto_curr1)
+			ctl = 2;
+		if (pdata->su2_auto_curr2)
+			ctl |= 8;
+		if (pdata->su2_auto_curr3)
+			ctl |= 0x20;
+		ret = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (!ret)
+		ret = regmap_write(as3711->regmap, AS3711_CURR_CONTROL, ctl);
+
+	return ret;
+}
+
+static int as3711_bl_register(struct platform_device *pdev,
+			      unsigned int max_brightness, struct as3711_bl_data *su)
+{
+	struct backlight_properties props = {.type = BACKLIGHT_RAW,};
+	struct backlight_device *bl;
+
+	/* max tuning I = 31uA for voltage- and 38250uA for current-feedback */
+	props.max_brightness = max_brightness;
+
+	bl = backlight_device_register(su->type == AS3711_BL_SU1 ?
+				       "as3711-su1" : "as3711-su2",
+				       &pdev->dev, su,
+				       &as3711_bl_ops, &props);
+	if (IS_ERR(bl)) {
+		dev_err(&pdev->dev, "failed to register backlight\n");
+		return PTR_ERR(bl);
+	}
+
+	bl->props.brightness = props.max_brightness;
+
+	backlight_update_status(bl);
+
+	su->bl = bl;
+
+	return 0;
+}
+
+static int as3711_backlight_probe(struct platform_device *pdev)
+{
+	struct as3711_bl_pdata *pdata = dev_get_platdata(&pdev->dev);
+	struct as3711 *as3711 = dev_get_drvdata(pdev->dev.parent);
+	struct as3711_bl_supply *supply;
+	struct as3711_bl_data *su;
+	unsigned int max_brightness;
+	int ret;
+
+	if (!pdata || (!pdata->su1_fb && !pdata->su2_fb)) {
+		dev_err(&pdev->dev, "No platform data, exiting...\n");
+		return -ENODEV;
+	}
+
+	/*
+	 * Due to possible hardware damage I chose to block all modes,
+	 * unsupported on my hardware. Anyone, wishing to use any of those modes
+	 * will have to first review the code, then activate and test it.
+	 */
+	if (pdata->su1_fb ||
+	    pdata->su2_fbprot != AS3711_SU2_GPIO4 ||
+	    pdata->su2_feedback != AS3711_SU2_CURR_AUTO) {
+		dev_warn(&pdev->dev,
+			 "Attention! An untested mode has been chosen!\n"
+			 "Please, review the code, enable, test, and report success:-)\n");
+		return -EINVAL;
+	}
+
+	supply = devm_kzalloc(&pdev->dev, sizeof(*supply), GFP_KERNEL);
+	if (!supply)
+		return -ENOMEM;
+
+	supply->as3711 = as3711;
+	supply->pdata = pdata;
+
+	if (pdata->su1_fb) {
+		su = &supply->su1;
+		su->fb_name = pdata->su1_fb;
+		su->type = AS3711_BL_SU1;
+
+		max_brightness = min(pdata->su1_max_uA, 31);
+		ret = as3711_bl_register(pdev, max_brightness, su);
+		if (ret < 0)
+			return ret;
+	}
+
+	if (pdata->su2_fb) {
+		su = &supply->su2;
+		su->fb_name = pdata->su2_fb;
+		su->type = AS3711_BL_SU2;
+
+		switch (pdata->su2_fbprot) {
+		case AS3711_SU2_GPIO2:
+		case AS3711_SU2_GPIO3:
+		case AS3711_SU2_GPIO4:
+		case AS3711_SU2_LX_SD4:
+			break;
+		default:
+			ret = -EINVAL;
+			goto esu2;
+		}
+
+		switch (pdata->su2_feedback) {
+		case AS3711_SU2_VOLTAGE:
+			max_brightness = min(pdata->su2_max_uA, 31);
+			break;
+		case AS3711_SU2_CURR1:
+		case AS3711_SU2_CURR2:
+		case AS3711_SU2_CURR3:
+		case AS3711_SU2_CURR_AUTO:
+			max_brightness = min(pdata->su2_max_uA / 150, 255);
+			break;
+		default:
+			ret = -EINVAL;
+			goto esu2;
+		}
+
+		ret = as3711_bl_init_su2(supply);
+		if (ret < 0)
+			return ret;
+
+		ret = as3711_bl_register(pdev, max_brightness, su);
+		if (ret < 0)
+			goto esu2;
+	}
+
+	platform_set_drvdata(pdev, supply);
+
+	return 0;
+
+esu2:
+	backlight_device_unregister(supply->su1.bl);
+	return ret;
+}
+
+static int as3711_backlight_remove(struct platform_device *pdev)
+{
+	struct as3711_bl_supply *supply = platform_get_drvdata(pdev);
+
+	backlight_device_unregister(supply->su1.bl);
+	backlight_device_unregister(supply->su2.bl);
+
+	return 0;
+}
+
+static struct platform_driver as3711_backlight_driver = {
+	.driver		= {
+		.name	= "as3711-backlight",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= as3711_backlight_probe,
+	.remove		= as3711_backlight_remove,
+};
+
+module_platform_driver(as3711_backlight_driver);
+
+MODULE_DESCRIPTION("Backlight Driver for AS3711 PMICs");
+MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:as3711-backlight");

drivers/video/backlight/corgi_lcd.c

@@ -337,7 +337,7 @@ static void corgi_lcd_power_off(struct corgi_lcd *lcd)
 
 static int corgi_lcd_set_mode(struct lcd_device *ld, struct fb_videomode *m)
 {
-	struct corgi_lcd *lcd = dev_get_drvdata(&ld->dev);
+	struct corgi_lcd *lcd = lcd_get_data(ld);
 	int mode = CORGI_LCD_MODE_QVGA;
 
 	if (m->xres == 640 || m->xres == 480)
@@ -364,7 +364,7 @@ static int corgi_lcd_set_mode(struct lcd_device *ld, struct fb_videomode *m)
 
 static int corgi_lcd_set_power(struct lcd_device *ld, int power)
 {
-	struct corgi_lcd *lcd = dev_get_drvdata(&ld->dev);
+	struct corgi_lcd *lcd = lcd_get_data(ld);
 
 	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))
 		corgi_lcd_power_on(lcd);
@@ -378,7 +378,7 @@ static int corgi_lcd_set_power(struct lcd_device *ld, int power)
 
 static int corgi_lcd_get_power(struct lcd_device *ld)
 {
-	struct corgi_lcd *lcd = dev_get_drvdata(&ld->dev);
+	struct corgi_lcd *lcd = lcd_get_data(ld);
 
 	return lcd->power;
 }
@@ -391,7 +391,7 @@ static struct lcd_ops corgi_lcd_ops = {
 
 static int corgi_bl_get_intensity(struct backlight_device *bd)
 {
-	struct corgi_lcd *lcd = dev_get_drvdata(&bd->dev);
+	struct corgi_lcd *lcd = bl_get_data(bd);
 
 	return lcd->intensity;
 }
@@ -423,7 +423,7 @@ static int corgi_bl_set_intensity(struct corgi_lcd *lcd, int intensity)
 
 static int corgi_bl_update_status(struct backlight_device *bd)
 {
-	struct corgi_lcd *lcd = dev_get_drvdata(&bd->dev);
+	struct corgi_lcd *lcd = bl_get_data(bd);
 	int intensity = bd->props.brightness;
 
 	if (bd->props.power != FB_BLANK_UNBLANK)
@@ -460,7 +460,7 @@ static const struct backlight_ops corgi_bl_ops = {
 #ifdef CONFIG_PM
 static int corgi_lcd_suspend(struct spi_device *spi, pm_message_t state)
 {
-	struct corgi_lcd *lcd = dev_get_drvdata(&spi->dev);
+	struct corgi_lcd *lcd = spi_get_drvdata(spi);
 
 	corgibl_flags |= CORGIBL_SUSPENDED;
 	corgi_bl_set_intensity(lcd, 0);
@@ -470,7 +470,7 @@ static int corgi_lcd_suspend(struct spi_device *spi, pm_message_t state)
 
 static int corgi_lcd_resume(struct spi_device *spi)
 {
-	struct corgi_lcd *lcd = dev_get_drvdata(&spi->dev);
+	struct corgi_lcd *lcd = spi_get_drvdata(spi);
 
 	corgibl_flags &= ~CORGIBL_SUSPENDED;
 	corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_UNBLANK);
@@ -577,7 +577,7 @@ static int corgi_lcd_probe(struct spi_device *spi)
 
 	lcd->kick_battery = pdata->kick_battery;
 
-	dev_set_drvdata(&spi->dev, lcd);
+	spi_set_drvdata(spi, lcd);
 	corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_UNBLANK);
 	backlight_update_status(lcd->bl_dev);
 
@@ -594,7 +594,7 @@ err_unregister_lcd:
 
 static int corgi_lcd_remove(struct spi_device *spi)
 {
-	struct corgi_lcd *lcd = dev_get_drvdata(&spi->dev);
+	struct corgi_lcd *lcd = spi_get_drvdata(spi);
 
 	lcd->bl_dev->props.power = FB_BLANK_UNBLANK;
 	lcd->bl_dev->props.brightness = 0;

drivers/video/backlight/hx8357.c

@@ -0,0 +1,497 @@
+/*
+ * Driver for the Himax HX-8357 LCD Controller
+ *
+ * Copyright 2012 Free Electrons
+ *
+ * Licensed under the GPLv2 or later.
+ */
+
+#include <linux/delay.h>
+#include <linux/lcd.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/spi/spi.h>
+
+#define HX8357_NUM_IM_PINS	3
+
+#define HX8357_SWRESET			0x01
+#define HX8357_GET_RED_CHANNEL		0x06
+#define HX8357_GET_GREEN_CHANNEL	0x07
+#define HX8357_GET_BLUE_CHANNEL		0x08
+#define HX8357_GET_POWER_MODE		0x0a
+#define HX8357_GET_MADCTL		0x0b
+#define HX8357_GET_PIXEL_FORMAT		0x0c
+#define HX8357_GET_DISPLAY_MODE		0x0d
+#define HX8357_GET_SIGNAL_MODE		0x0e
+#define HX8357_GET_DIAGNOSTIC_RESULT	0x0f
+#define HX8357_ENTER_SLEEP_MODE		0x10
+#define HX8357_EXIT_SLEEP_MODE		0x11
+#define HX8357_ENTER_PARTIAL_MODE	0x12
+#define HX8357_ENTER_NORMAL_MODE	0x13
+#define HX8357_EXIT_INVERSION_MODE	0x20
+#define HX8357_ENTER_INVERSION_MODE	0x21
+#define HX8357_SET_DISPLAY_OFF		0x28
+#define HX8357_SET_DISPLAY_ON		0x29
+#define HX8357_SET_COLUMN_ADDRESS	0x2a
+#define HX8357_SET_PAGE_ADDRESS		0x2b
+#define HX8357_WRITE_MEMORY_START	0x2c
+#define HX8357_READ_MEMORY_START	0x2e
+#define HX8357_SET_PARTIAL_AREA		0x30
+#define HX8357_SET_SCROLL_AREA		0x33
+#define HX8357_SET_TEAR_OFF		0x34
+#define HX8357_SET_TEAR_ON		0x35
+#define HX8357_SET_ADDRESS_MODE		0x36
+#define HX8357_SET_SCROLL_START		0x37
+#define HX8357_EXIT_IDLE_MODE		0x38
+#define HX8357_ENTER_IDLE_MODE		0x39
+#define HX8357_SET_PIXEL_FORMAT		0x3a
+#define HX8357_SET_PIXEL_FORMAT_DBI_3BIT	(0x1)
+#define HX8357_SET_PIXEL_FORMAT_DBI_16BIT	(0x5)
+#define HX8357_SET_PIXEL_FORMAT_DBI_18BIT	(0x6)
+#define HX8357_SET_PIXEL_FORMAT_DPI_3BIT	(0x1 << 4)
+#define HX8357_SET_PIXEL_FORMAT_DPI_16BIT	(0x5 << 4)
+#define HX8357_SET_PIXEL_FORMAT_DPI_18BIT	(0x6 << 4)
+#define HX8357_WRITE_MEMORY_CONTINUE	0x3c
+#define HX8357_READ_MEMORY_CONTINUE	0x3e
+#define HX8357_SET_TEAR_SCAN_LINES	0x44
+#define HX8357_GET_SCAN_LINES		0x45
+#define HX8357_READ_DDB_START		0xa1
+#define HX8357_SET_DISPLAY_MODE		0xb4
+#define HX8357_SET_DISPLAY_MODE_RGB_THROUGH	(0x3)
+#define HX8357_SET_DISPLAY_MODE_RGB_INTERFACE	(1 << 4)
+#define HX8357_SET_PANEL_DRIVING	0xc0
+#define HX8357_SET_DISPLAY_FRAME	0xc5
+#define HX8357_SET_RGB			0xc6
+#define HX8357_SET_RGB_ENABLE_HIGH		(1 << 1)
+#define HX8357_SET_GAMMA		0xc8
+#define HX8357_SET_POWER		0xd0
+#define HX8357_SET_VCOM			0xd1
+#define HX8357_SET_POWER_NORMAL		0xd2
+#define HX8357_SET_PANEL_RELATED	0xe9
+
+struct hx8357_data {
+	unsigned		im_pins[HX8357_NUM_IM_PINS];
+	unsigned		reset;
+	struct spi_device	*spi;
+	int			state;
+};
+
+static u8 hx8357_seq_power[] = {
+	HX8357_SET_POWER, 0x44, 0x41, 0x06,
+};
+
+static u8 hx8357_seq_vcom[] = {
+	HX8357_SET_VCOM, 0x40, 0x10,
+};
+
+static u8 hx8357_seq_power_normal[] = {
+	HX8357_SET_POWER_NORMAL, 0x05, 0x12,
+};
+
+static u8 hx8357_seq_panel_driving[] = {
+	HX8357_SET_PANEL_DRIVING, 0x14, 0x3b, 0x00, 0x02, 0x11,
+};
+
+static u8 hx8357_seq_display_frame[] = {
+	HX8357_SET_DISPLAY_FRAME, 0x0c,
+};
+
+static u8 hx8357_seq_panel_related[] = {
+	HX8357_SET_PANEL_RELATED, 0x01,
+};
+
+static u8 hx8357_seq_undefined1[] = {
+	0xea, 0x03, 0x00, 0x00,
+};
+
+static u8 hx8357_seq_undefined2[] = {
+	0xeb, 0x40, 0x54, 0x26, 0xdb,
+};
+
+static u8 hx8357_seq_gamma[] = {
+	HX8357_SET_GAMMA, 0x00, 0x15, 0x00, 0x22, 0x00,
+	0x08, 0x77, 0x26, 0x77, 0x22, 0x04, 0x00,
+};
+
+static u8 hx8357_seq_address_mode[] = {
+	HX8357_SET_ADDRESS_MODE, 0xc0,
+};
+
+static u8 hx8357_seq_pixel_format[] = {
+	HX8357_SET_PIXEL_FORMAT,
+	HX8357_SET_PIXEL_FORMAT_DPI_18BIT |
+	HX8357_SET_PIXEL_FORMAT_DBI_18BIT,
+};
+
+static u8 hx8357_seq_column_address[] = {
+	HX8357_SET_COLUMN_ADDRESS, 0x00, 0x00, 0x01, 0x3f,
+};
+
+static u8 hx8357_seq_page_address[] = {
+	HX8357_SET_PAGE_ADDRESS, 0x00, 0x00, 0x01, 0xdf,
+};
+
+static u8 hx8357_seq_rgb[] = {
+	HX8357_SET_RGB, 0x02,
+};
+
+static u8 hx8357_seq_display_mode[] = {
+	HX8357_SET_DISPLAY_MODE,
+	HX8357_SET_DISPLAY_MODE_RGB_THROUGH |
+	HX8357_SET_DISPLAY_MODE_RGB_INTERFACE,
+};
+
+static int hx8357_spi_write_then_read(struct lcd_device *lcdev,
+				u8 *txbuf, u16 txlen,
+				u8 *rxbuf, u16 rxlen)
+{
+	struct hx8357_data *lcd = lcd_get_data(lcdev);
+	struct spi_message msg;
+	struct spi_transfer xfer[2];
+	u16 *local_txbuf = NULL;
+	int ret = 0;
+
+	memset(xfer, 0, sizeof(xfer));
+	spi_message_init(&msg);
+
+	if (txlen) {
+		int i;
+
+		local_txbuf = kcalloc(txlen, sizeof(*local_txbuf), GFP_KERNEL);
+
+		if (!local_txbuf)
+			return -ENOMEM;
+
+		for (i = 0; i < txlen; i++) {
+			local_txbuf[i] = txbuf[i];
+			if (i > 0)
+				local_txbuf[i] |= 1 << 8;
+		}
+
+		xfer[0].len = 2 * txlen;
+		xfer[0].bits_per_word = 9;
+		xfer[0].tx_buf = local_txbuf;
+		spi_message_add_tail(&xfer[0], &msg);
+	}
+
+	if (rxlen) {
+		xfer[1].len = rxlen;
+		xfer[1].bits_per_word = 8;
+		xfer[1].rx_buf = rxbuf;
+		spi_message_add_tail(&xfer[1], &msg);
+	}
+
+	ret = spi_sync(lcd->spi, &msg);
+	if (ret < 0)
+		dev_err(&lcdev->dev, "Couldn't send SPI data\n");
+
+	if (txlen)
+		kfree(local_txbuf);
+
+	return ret;
+}
+
+static inline int hx8357_spi_write_array(struct lcd_device *lcdev,
+					u8 *value, u8 len)
+{
+	return hx8357_spi_write_then_read(lcdev, value, len, NULL, 0);
+}
+
+static inline int hx8357_spi_write_byte(struct lcd_device *lcdev,
+					u8 value)
+{
+	return hx8357_spi_write_then_read(lcdev, &value, 1, NULL, 0);
+}
+
+static int hx8357_enter_standby(struct lcd_device *lcdev)
+{
+	int ret;
+
+	ret = hx8357_spi_write_byte(lcdev, HX8357_SET_DISPLAY_OFF);
+	if (ret < 0)
+		return ret;
+
+	usleep_range(10000, 12000);
+
+	ret = hx8357_spi_write_byte(lcdev, HX8357_ENTER_SLEEP_MODE);
+	if (ret < 0)
+		return ret;
+
+	msleep(120);
+
+	return 0;
+}
+
+static int hx8357_exit_standby(struct lcd_device *lcdev)
+{
+	int ret;
+
+	ret = hx8357_spi_write_byte(lcdev, HX8357_EXIT_SLEEP_MODE);
+	if (ret < 0)
+		return ret;
+
+	msleep(120);
+
+	ret = hx8357_spi_write_byte(lcdev, HX8357_SET_DISPLAY_ON);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int hx8357_lcd_init(struct lcd_device *lcdev)
+{
+	struct hx8357_data *lcd = lcd_get_data(lcdev);
+	int ret;
+
+	/*
+	 * Set the interface selection pins to SPI mode, with three
+	 * wires
+	 */
+	gpio_set_value_cansleep(lcd->im_pins[0], 1);
+	gpio_set_value_cansleep(lcd->im_pins[1], 0);
+	gpio_set_value_cansleep(lcd->im_pins[2], 1);
+
+	/* Reset the screen */
+	gpio_set_value(lcd->reset, 1);
+	usleep_range(10000, 12000);
+	gpio_set_value(lcd->reset, 0);
+	usleep_range(10000, 12000);
+	gpio_set_value(lcd->reset, 1);
+	msleep(120);
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_power,
+				ARRAY_SIZE(hx8357_seq_power));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_vcom,
+				ARRAY_SIZE(hx8357_seq_vcom));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_power_normal,
+				ARRAY_SIZE(hx8357_seq_power_normal));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_panel_driving,
+				ARRAY_SIZE(hx8357_seq_panel_driving));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_display_frame,
+				ARRAY_SIZE(hx8357_seq_display_frame));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_panel_related,
+				ARRAY_SIZE(hx8357_seq_panel_related));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_undefined1,
+				ARRAY_SIZE(hx8357_seq_undefined1));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_undefined2,
+				ARRAY_SIZE(hx8357_seq_undefined2));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_gamma,
+				ARRAY_SIZE(hx8357_seq_gamma));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_address_mode,
+				ARRAY_SIZE(hx8357_seq_address_mode));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_pixel_format,
+				ARRAY_SIZE(hx8357_seq_pixel_format));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_column_address,
+				ARRAY_SIZE(hx8357_seq_column_address));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_page_address,
+				ARRAY_SIZE(hx8357_seq_page_address));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_rgb,
+				ARRAY_SIZE(hx8357_seq_rgb));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_array(lcdev, hx8357_seq_display_mode,
+				ARRAY_SIZE(hx8357_seq_display_mode));
+	if (ret < 0)
+		return ret;
+
+	ret = hx8357_spi_write_byte(lcdev, HX8357_EXIT_SLEEP_MODE);
+	if (ret < 0)
+		return ret;
+
+	msleep(120);
+
+	ret = hx8357_spi_write_byte(lcdev, HX8357_SET_DISPLAY_ON);
+	if (ret < 0)
+		return ret;
+
+	usleep_range(5000, 7000);
+
+	ret = hx8357_spi_write_byte(lcdev, HX8357_WRITE_MEMORY_START);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+#define POWER_IS_ON(pwr)	((pwr) <= FB_BLANK_NORMAL)
+
+static int hx8357_set_power(struct lcd_device *lcdev, int power)
+{
+	struct hx8357_data *lcd = lcd_get_data(lcdev);
+	int ret = 0;
+
+	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->state))
+		ret = hx8357_exit_standby(lcdev);
+	else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->state))
+		ret = hx8357_enter_standby(lcdev);
+
+	if (ret == 0)
+		lcd->state = power;
+	else
+		dev_warn(&lcdev->dev, "failed to set power mode %d\n", power);
+
+	return ret;
+}
+
+static int hx8357_get_power(struct lcd_device *lcdev)
+{
+	struct hx8357_data *lcd = lcd_get_data(lcdev);
+
+	return lcd->state;
+}
+
+static struct lcd_ops hx8357_ops = {
+	.set_power	= hx8357_set_power,
+	.get_power	= hx8357_get_power,
+};
+
+static int hx8357_probe(struct spi_device *spi)
+{
+	struct lcd_device *lcdev;
+	struct hx8357_data *lcd;
+	int i, ret;
+
+	lcd = devm_kzalloc(&spi->dev, sizeof(*lcd), GFP_KERNEL);
+	if (!lcd) {
+		dev_err(&spi->dev, "Couldn't allocate lcd internal structure!\n");
+		return -ENOMEM;
+	}
+
+	ret = spi_setup(spi);
+	if (ret < 0) {
+		dev_err(&spi->dev, "SPI setup failed.\n");
+		return ret;
+	}
+
+	lcd->spi = spi;
+
+	lcd->reset = of_get_named_gpio(spi->dev.of_node, "gpios-reset", 0);
+	if (!gpio_is_valid(lcd->reset)) {
+		dev_err(&spi->dev, "Missing dt property: gpios-reset\n");
+		return -EINVAL;
+	}
+
+	ret = devm_gpio_request_one(&spi->dev, lcd->reset,
+				    GPIOF_OUT_INIT_HIGH,
+				    "hx8357-reset");
+	if (ret) {
+		dev_err(&spi->dev,
+			"failed to request gpio %d: %d\n",
+			lcd->reset, ret);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < HX8357_NUM_IM_PINS; i++) {
+		lcd->im_pins[i] = of_get_named_gpio(spi->dev.of_node,
+						"im-gpios", i);
+		if (lcd->im_pins[i] == -EPROBE_DEFER) {
+			dev_info(&spi->dev, "GPIO requested is not here yet, deferring the probe\n");
+			return -EPROBE_DEFER;
+		}
+		if (!gpio_is_valid(lcd->im_pins[i])) {
+			dev_err(&spi->dev, "Missing dt property: im-gpios\n");
+			return -EINVAL;
+		}
+
+		ret = devm_gpio_request_one(&spi->dev, lcd->im_pins[i],
+					GPIOF_OUT_INIT_LOW, "im_pins");
+		if (ret) {
+			dev_err(&spi->dev, "failed to request gpio %d: %d\n",
+				lcd->im_pins[i], ret);
+			return -EINVAL;
+		}
+	}
+
+	lcdev = lcd_device_register("mxsfb", &spi->dev, lcd, &hx8357_ops);
+	if (IS_ERR(lcdev)) {
+		ret = PTR_ERR(lcdev);
+		return ret;
+	}
+	spi_set_drvdata(spi, lcdev);
+
+	ret = hx8357_lcd_init(lcdev);
+	if (ret) {
+		dev_err(&spi->dev, "Couldn't initialize panel\n");
+		goto init_error;
+	}
+
+	dev_info(&spi->dev, "Panel probed\n");
+
+	return 0;
+
+init_error:
+	lcd_device_unregister(lcdev);
+	return ret;
+}
+
+static int hx8357_remove(struct spi_device *spi)
+{
+	struct lcd_device *lcdev = spi_get_drvdata(spi);
+
+	lcd_device_unregister(lcdev);
+	return 0;
+}
+
+static const struct of_device_id hx8357_dt_ids[] = {
+	{ .compatible = "himax,hx8357" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, hx8357_dt_ids);
+
+static struct spi_driver hx8357_driver = {
+	.probe  = hx8357_probe,
+	.remove = hx8357_remove,
+	.driver = {
+		.name = "hx8357",
+		.of_match_table = of_match_ptr(hx8357_dt_ids),
+	},
+};
+
+module_spi_driver(hx8357_driver);
+
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
+MODULE_DESCRIPTION("Himax HX-8357 LCD Driver");
+MODULE_LICENSE("GPL");

drivers/video/backlight/l4f00242t03.c

@@ -49,7 +49,7 @@ static void l4f00242t03_reset(unsigned int gpio)
 static void l4f00242t03_lcd_init(struct spi_device *spi)
 {
 	struct l4f00242t03_pdata *pdata = spi->dev.platform_data;
-	struct l4f00242t03_priv *priv = dev_get_drvdata(&spi->dev);
+	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);
 	const u16 cmd[] = { 0x36, param(0), 0x3A, param(0x60) };
 
 	dev_dbg(&spi->dev, "initializing LCD\n");
@@ -70,7 +70,7 @@ static void l4f00242t03_lcd_init(struct spi_device *spi)
 static void l4f00242t03_lcd_powerdown(struct spi_device *spi)
 {
 	struct l4f00242t03_pdata *pdata = spi->dev.platform_data;
-	struct l4f00242t03_priv *priv = dev_get_drvdata(&spi->dev);
+	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);
 
 	dev_dbg(&spi->dev, "Powering down LCD\n");
 
@@ -168,7 +168,7 @@ static int l4f00242t03_probe(struct spi_device *spi)
 		return -ENOMEM;
 	}
 
-	dev_set_drvdata(&spi->dev, priv);
+	spi_set_drvdata(spi, priv);
 	spi->bits_per_word = 9;
 	spi_setup(spi);
 
@@ -190,27 +190,24 @@ static int l4f00242t03_probe(struct spi_device *spi)
 		return ret;
 	}
 
-	priv->io_reg = regulator_get(&spi->dev, "vdd");
+	priv->io_reg = devm_regulator_get(&spi->dev, "vdd");
 	if (IS_ERR(priv->io_reg)) {
 		dev_err(&spi->dev, "%s: Unable to get the IO regulator\n",
 		       __func__);
 		return PTR_ERR(priv->io_reg);
 	}
 
-	priv->core_reg = regulator_get(&spi->dev, "vcore");
+	priv->core_reg = devm_regulator_get(&spi->dev, "vcore");
 	if (IS_ERR(priv->core_reg)) {
-		ret = PTR_ERR(priv->core_reg);
 		dev_err(&spi->dev, "%s: Unable to get the core regulator\n",
 		       __func__);
-		goto err1;
+		return PTR_ERR(priv->core_reg);
 	}
 
 	priv->ld = lcd_device_register("l4f00242t03",
 					&spi->dev, priv, &l4f_ops);
-	if (IS_ERR(priv->ld)) {
-		ret = PTR_ERR(priv->ld);
-		goto err2;
-	}
+	if (IS_ERR(priv->ld))
+		return PTR_ERR(priv->ld);
 
 	/* Init the LCD */
 	l4f00242t03_lcd_init(spi);
@@ -220,33 +217,22 @@ static int l4f00242t03_probe(struct spi_device *spi)
 	dev_info(&spi->dev, "Epson l4f00242t03 lcd probed.\n");
 
 	return 0;
-
-err2:
-	regulator_put(priv->core_reg);
-err1:
-	regulator_put(priv->io_reg);
-
-	return ret;
 }
 
 static int l4f00242t03_remove(struct spi_device *spi)
 {
-	struct l4f00242t03_priv *priv = dev_get_drvdata(&spi->dev);
+	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);
 
 	l4f00242t03_lcd_power_set(priv->ld, FB_BLANK_POWERDOWN);
 	lcd_device_unregister(priv->ld);
-
-	dev_set_drvdata(&spi->dev, NULL);
-
-	regulator_put(priv->io_reg);
-	regulator_put(priv->core_reg);
+	spi_set_drvdata(spi, NULL);
 
 	return 0;
 }
 
 static void l4f00242t03_shutdown(struct spi_device *spi)
 {
-	struct l4f00242t03_priv *priv = dev_get_drvdata(&spi->dev);
+	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);
 
 	if (priv)
 		l4f00242t03_lcd_power_set(priv->ld, FB_BLANK_POWERDOWN);

drivers/video/backlight/ld9040.c

@@ -9,29 +9,20 @@
  * under the terms of the GNU General Public License as published by the
  * Free Software Foundation; either version 2 of the License, or (at your
  * option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
-#include <linux/wait.h>
-#include <linux/fb.h>
+#include <linux/backlight.h>
 #include <linux/delay.h>
+#include <linux/fb.h>
 #include <linux/gpio.h>
-#include <linux/spi/spi.h>
-#include <linux/irq.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/lcd.h>
-#include <linux/backlight.h>
 #include <linux/module.h>
 #include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <linux/wait.h>
 
 #include "ld9040_gamma.h"
 
@@ -43,7 +34,6 @@
 
 #define MIN_BRIGHTNESS		0
 #define MAX_BRIGHTNESS		24
-#define power_is_on(pwr)	((pwr) <= FB_BLANK_NORMAL)
 
 struct ld9040 {
 	struct device			*dev;
@@ -78,7 +68,7 @@ static void ld9040_regulator_enable(struct ld9040 *lcd)
 
 		lcd->enabled = true;
 	}
-	mdelay(pd->power_on_delay);
+	msleep(pd->power_on_delay);
 out:
 	mutex_unlock(&lcd->lock);
 }
@@ -474,8 +464,9 @@ static int ld9040_panel_send_sequence(struct ld9040 *lcd,
 			ret = ld9040_spi_write(lcd, wbuf[i], wbuf[i+1]);
 			if (ret)
 				break;
-		} else
-			udelay(wbuf[i+1]*1000);
+		} else {
+			msleep(wbuf[i+1]);
+		}
 		i += 2;
 	}
 
@@ -513,14 +504,9 @@ gamma_err:
 
 static int ld9040_gamma_ctl(struct ld9040 *lcd, int gamma)
 {
-	int ret = 0;
-
-	ret = _ld9040_gamma_ctl(lcd, gamma_table.gamma_22_table[gamma]);
-
-	return ret;
+	return _ld9040_gamma_ctl(lcd, gamma_table.gamma_22_table[gamma]);
 }
 
-
 static int ld9040_ldi_init(struct ld9040 *lcd)
 {
 	int ret, i;
@@ -539,7 +525,7 @@ static int ld9040_ldi_init(struct ld9040 *lcd)
 	for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
 		ret = ld9040_panel_send_sequence(lcd, init_seq[i]);
 		/* workaround: minimum delay time for transferring CMD */
-		udelay(300);
+		usleep_range(300, 310);
 		if (ret)
 			break;
 	}
@@ -549,11 +535,7 @@ static int ld9040_ldi_init(struct ld9040 *lcd)
 
 static int ld9040_ldi_enable(struct ld9040 *lcd)
 {
-	int ret = 0;
-
-	ret = ld9040_panel_send_sequence(lcd, seq_display_on);
-
-	return ret;
+	return ld9040_panel_send_sequence(lcd, seq_display_on);
 }
 
 static int ld9040_ldi_disable(struct ld9040 *lcd)
@@ -566,25 +548,27 @@ static int ld9040_ldi_disable(struct ld9040 *lcd)
 	return ret;
 }
 
+static int ld9040_power_is_on(int power)
+{
+	return power <= FB_BLANK_NORMAL;
+}
+
 static int ld9040_power_on(struct ld9040 *lcd)
 {
 	int ret = 0;
-	struct lcd_platform_data *pd = NULL;
+	struct lcd_platform_data *pd;
+
 	pd = lcd->lcd_pd;
-	if (!pd) {
-		dev_err(lcd->dev, "platform data is NULL.\n");
-		return -EFAULT;
-	}
 
 	/* lcd power on */
 	ld9040_regulator_enable(lcd);
 
 	if (!pd->reset) {
 		dev_err(lcd->dev, "reset is NULL.\n");
-		return -EFAULT;
+		return -EINVAL;
 	} else {
 		pd->reset(lcd->ld);
-		mdelay(pd->reset_delay);
+		msleep(pd->reset_delay);
 	}
 
 	ret = ld9040_ldi_init(lcd);
@@ -604,14 +588,10 @@ static int ld9040_power_on(struct ld9040 *lcd)
 
 static int ld9040_power_off(struct ld9040 *lcd)
 {
-	int ret = 0;
-	struct lcd_platform_data *pd = NULL;
+	int ret;
+	struct lcd_platform_data *pd;
 
 	pd = lcd->lcd_pd;
-	if (!pd) {
-		dev_err(lcd->dev, "platform data is NULL.\n");
-		return -EFAULT;
-	}
 
 	ret = ld9040_ldi_disable(lcd);
 	if (ret) {
@@ -619,7 +599,7 @@ static int ld9040_power_off(struct ld9040 *lcd)
 		return -EIO;
 	}
 
-	mdelay(pd->power_off_delay);
+	msleep(pd->power_off_delay);
 
 	/* lcd power off */
 	ld9040_regulator_disable(lcd);
@@ -631,9 +611,9 @@ static int ld9040_power(struct ld9040 *lcd, int power)
 {
 	int ret = 0;
 
-	if (power_is_on(power) && !power_is_on(lcd->power))
+	if (ld9040_power_is_on(power) && !ld9040_power_is_on(lcd->power))
 		ret = ld9040_power_on(lcd);
-	else if (!power_is_on(power) && power_is_on(lcd->power))
+	else if (!ld9040_power_is_on(power) && ld9040_power_is_on(lcd->power))
 		ret = ld9040_power_off(lcd);
 
 	if (!ret)
@@ -698,7 +678,6 @@ static const struct backlight_ops ld9040_backlight_ops  = {
 	.update_status = ld9040_set_brightness,
 };
 
-
 static int ld9040_probe(struct spi_device *spi)
 {
 	int ret = 0;
@@ -726,22 +705,20 @@ static int ld9040_probe(struct spi_device *spi)
 	lcd->lcd_pd = spi->dev.platform_data;
 	if (!lcd->lcd_pd) {
 		dev_err(&spi->dev, "platform data is NULL.\n");
-		return -EFAULT;
+		return -EINVAL;
 	}
 
 	mutex_init(&lcd->lock);
 
-	ret = regulator_bulk_get(lcd->dev, ARRAY_SIZE(supplies), supplies);
+	ret = devm_regulator_bulk_get(lcd->dev, ARRAY_SIZE(supplies), supplies);
 	if (ret) {
 		dev_err(lcd->dev, "Failed to get regulators: %d\n", ret);
 		return ret;
 	}
 
 	ld = lcd_device_register("ld9040", &spi->dev, lcd, &ld9040_lcd_ops);
-	if (IS_ERR(ld)) {
-		ret = PTR_ERR(ld);
-		goto out_free_regulator;
-	}
+	if (IS_ERR(ld))
+		return PTR_ERR(ld);
 
 	lcd->ld = ld;
 
@@ -772,30 +749,28 @@ static int ld9040_probe(struct spi_device *spi)
 		lcd->power = FB_BLANK_POWERDOWN;
 
 		ld9040_power(lcd, FB_BLANK_UNBLANK);
-	} else
+	} else {
 		lcd->power = FB_BLANK_UNBLANK;
+	}
 
-	dev_set_drvdata(&spi->dev, lcd);
+	spi_set_drvdata(spi, lcd);
 
 	dev_info(&spi->dev, "ld9040 panel driver has been probed.\n");
 	return 0;
 
 out_unregister_lcd:
 	lcd_device_unregister(lcd->ld);
-out_free_regulator:
-	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
 
 	return ret;
 }
 
 static int ld9040_remove(struct spi_device *spi)
 {
-	struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+	struct ld9040 *lcd = spi_get_drvdata(spi);
 
 	ld9040_power(lcd, FB_BLANK_POWERDOWN);
 	backlight_device_unregister(lcd->bd);
 	lcd_device_unregister(lcd->ld);
-	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
 
 	return 0;
 }
@@ -803,8 +778,7 @@ static int ld9040_remove(struct spi_device *spi)
 #if defined(CONFIG_PM)
 static int ld9040_suspend(struct spi_device *spi, pm_message_t mesg)
 {
-	int ret = 0;
-	struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+	struct ld9040 *lcd = spi_get_drvdata(spi);
 
 	dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power);
 
@@ -812,21 +786,16 @@ static int ld9040_suspend(struct spi_device *spi, pm_message_t mesg)
 	 * when lcd panel is suspend, lcd panel becomes off
 	 * regardless of status.
 	 */
-	ret = ld9040_power(lcd, FB_BLANK_POWERDOWN);
-
-	return ret;
+	return ld9040_power(lcd, FB_BLANK_POWERDOWN);
 }
 
 static int ld9040_resume(struct spi_device *spi)
 {
-	int ret = 0;
-	struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+	struct ld9040 *lcd = spi_get_drvdata(spi);
 
 	lcd->power = FB_BLANK_POWERDOWN;
 
-	ret = ld9040_power(lcd, FB_BLANK_UNBLANK);
-
-	return ret;
+	return ld9040_power(lcd, FB_BLANK_UNBLANK);
 }
 #else
 #define ld9040_suspend		NULL
@@ -836,7 +805,7 @@ static int ld9040_resume(struct spi_device *spi)
 /* Power down all displays on reboot, poweroff or halt. */
 static void ld9040_shutdown(struct spi_device *spi)
 {
-	struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+	struct ld9040 *lcd = spi_get_drvdata(spi);
 
 	ld9040_power(lcd, FB_BLANK_POWERDOWN);
 }

drivers/video/backlight/lm3630_bl.c

@@ -320,7 +320,7 @@ static int lm3630_backlight_register(struct lm3630_chip_data *pchip,
 		    backlight_device_register(name, pchip->dev, pchip,
 					      &lm3630_bank_a_ops, &props);
 		if (IS_ERR(pchip->bled1))
-			return -EIO;
+			return PTR_ERR(pchip->bled1);
 		break;
 	case BLED_2:
 		props.brightness = pdata->init_brt_led2;
@@ -329,7 +329,7 @@ static int lm3630_backlight_register(struct lm3630_chip_data *pchip,
 		    backlight_device_register(name, pchip->dev, pchip,
 					      &lm3630_bank_b_ops, &props);
 		if (IS_ERR(pchip->bled2))
-			return -EIO;
+			return PTR_ERR(pchip->bled2);
 		break;
 	}
 	return 0;

drivers/video/backlight/lm3639_bl.c

@@ -350,14 +350,13 @@ static int lm3639_probe(struct i2c_client *client,
 				      &lm3639_bled_ops, &props);
 	if (IS_ERR(pchip->bled)) {
 		dev_err(&client->dev, "fail : backlight register\n");
-		ret = -EIO;
+		ret = PTR_ERR(pchip->bled);
 		goto err_out;
 	}
 
 	ret = device_create_file(&(pchip->bled->dev), &dev_attr_bled_mode);
 	if (ret < 0) {
 		dev_err(&client->dev, "failed : add sysfs entries\n");
-		ret = -EIO;
 		goto err_bled_mode;
 	}
 
@@ -369,7 +368,6 @@ static int lm3639_probe(struct i2c_client *client,
 				    &client->dev, &pchip->cdev_flash);
 	if (ret < 0) {
 		dev_err(&client->dev, "fail : flash register\n");
-		ret = -EIO;
 		goto err_flash;
 	}
 
@@ -381,7 +379,6 @@ static int lm3639_probe(struct i2c_client *client,
 				    &client->dev, &pchip->cdev_torch);
 	if (ret < 0) {
 		dev_err(&client->dev, "fail : torch register\n");
-		ret = -EIO;
 		goto err_torch;
 	}
 

drivers/video/backlight/lms283gf05.c

@@ -180,7 +180,7 @@ static int lms283gf05_probe(struct spi_device *spi)
 	st->spi = spi;
 	st->ld = ld;
 
-	dev_set_drvdata(&spi->dev, st);
+	spi_set_drvdata(spi, st);
 
 	/* kick in the LCD */
 	if (pdata)
@@ -192,7 +192,7 @@ static int lms283gf05_probe(struct spi_device *spi)
 
 static int lms283gf05_remove(struct spi_device *spi)
 {
-	struct lms283gf05_state *st = dev_get_drvdata(&spi->dev);
+	struct lms283gf05_state *st = spi_get_drvdata(spi);
 
 	lcd_device_unregister(st->ld);
 

drivers/video/backlight/lms501kf03.c

@@ -0,0 +1,441 @@
+/*
+ * lms501kf03 TFT LCD panel driver.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * Author: Jingoo Han  <jg1.han@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+#include <linux/lcd.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <linux/wait.h>
+
+#define COMMAND_ONLY		0x00
+#define DATA_ONLY		0x01
+
+struct lms501kf03 {
+	struct device			*dev;
+	struct spi_device		*spi;
+	unsigned int			power;
+	struct lcd_device		*ld;
+	struct lcd_platform_data	*lcd_pd;
+};
+
+static const unsigned char seq_password[] = {
+	0xb9, 0xff, 0x83, 0x69,
+};
+
+static const unsigned char seq_power[] = {
+	0xb1, 0x01, 0x00, 0x34, 0x06, 0x00, 0x14, 0x14, 0x20, 0x28,
+	0x12, 0x12, 0x17, 0x0a, 0x01, 0xe6, 0xe6, 0xe6, 0xe6, 0xe6,
+};
+
+static const unsigned char seq_display[] = {
+	0xb2, 0x00, 0x2b, 0x03, 0x03, 0x70, 0x00, 0xff, 0x00, 0x00,
+	0x00, 0x00, 0x03, 0x03, 0x00, 0x01,
+};
+
+static const unsigned char seq_rgb_if[] = {
+	0xb3, 0x09,
+};
+
+static const unsigned char seq_display_inv[] = {
+	0xb4, 0x01, 0x08, 0x77, 0x0e, 0x06,
+};
+
+static const unsigned char seq_vcom[] = {
+	0xb6, 0x4c, 0x2e,
+};
+
+static const unsigned char seq_gate[] = {
+	0xd5, 0x00, 0x05, 0x03, 0x29, 0x01, 0x07, 0x17, 0x68, 0x13,
+	0x37, 0x20, 0x31, 0x8a, 0x46, 0x9b, 0x57, 0x13, 0x02, 0x75,
+	0xb9, 0x64, 0xa8, 0x07, 0x0f, 0x04, 0x07,
+};
+
+static const unsigned char seq_panel[] = {
+	0xcc, 0x02,
+};
+
+static const unsigned char seq_col_mod[] = {
+	0x3a, 0x77,
+};
+
+static const unsigned char seq_w_gamma[] = {
+	0xe0, 0x00, 0x04, 0x09, 0x0f, 0x1f, 0x3f, 0x1f, 0x2f, 0x0a,
+	0x0f, 0x10, 0x16, 0x18, 0x16, 0x17, 0x0d, 0x15, 0x00, 0x04,
+	0x09, 0x0f, 0x38, 0x3f, 0x20, 0x39, 0x0a, 0x0f, 0x10, 0x16,
+	0x18, 0x16, 0x17, 0x0d, 0x15,
+};
+
+static const unsigned char seq_rgb_gamma[] = {
+	0xc1, 0x01, 0x03, 0x07, 0x0f, 0x1a, 0x22, 0x2c, 0x33, 0x3c,
+	0x46, 0x4f, 0x58, 0x60, 0x69, 0x71, 0x79, 0x82, 0x89, 0x92,
+	0x9a, 0xa1, 0xa9, 0xb1, 0xb9, 0xc1, 0xc9, 0xcf, 0xd6, 0xde,
+	0xe5, 0xec, 0xf3, 0xf9, 0xff, 0xdd, 0x39, 0x07, 0x1c, 0xcb,
+	0xab, 0x5f, 0x49, 0x80, 0x03, 0x07, 0x0f, 0x19, 0x20, 0x2a,
+	0x31, 0x39, 0x42, 0x4b, 0x53, 0x5b, 0x63, 0x6b, 0x73, 0x7b,
+	0x83, 0x8a, 0x92, 0x9b, 0xa2, 0xaa, 0xb2, 0xba, 0xc2, 0xca,
+	0xd0, 0xd8, 0xe1, 0xe8, 0xf0, 0xf8, 0xff, 0xf7, 0xd8, 0xbe,
+	0xa7, 0x39, 0x40, 0x85, 0x8c, 0xc0, 0x04, 0x07, 0x0c, 0x17,
+	0x1c, 0x23, 0x2b, 0x34, 0x3b, 0x43, 0x4c, 0x54, 0x5b, 0x63,
+	0x6a, 0x73, 0x7a, 0x82, 0x8a, 0x91, 0x98, 0xa1, 0xa8, 0xb0,
+	0xb7, 0xc1, 0xc9, 0xcf, 0xd9, 0xe3, 0xea, 0xf4, 0xff, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const unsigned char seq_up_dn[] = {
+	0x36, 0x10,
+};
+
+static const unsigned char seq_sleep_in[] = {
+	0x10,
+};
+
+static const unsigned char seq_sleep_out[] = {
+	0x11,
+};
+
+static const unsigned char seq_display_on[] = {
+	0x29,
+};
+
+static const unsigned char seq_display_off[] = {
+	0x10,
+};
+
+static int lms501kf03_spi_write_byte(struct lms501kf03 *lcd, int addr, int data)
+{
+	u16 buf[1];
+	struct spi_message msg;
+
+	struct spi_transfer xfer = {
+		.len		= 2,
+		.tx_buf		= buf,
+	};
+
+	buf[0] = (addr << 8) | data;
+
+	spi_message_init(&msg);
+	spi_message_add_tail(&xfer, &msg);
+
+	return spi_sync(lcd->spi, &msg);
+}
+
+static int lms501kf03_spi_write(struct lms501kf03 *lcd, unsigned char address,
+				unsigned char command)
+{
+	return lms501kf03_spi_write_byte(lcd, address, command);
+}
+
+static int lms501kf03_panel_send_sequence(struct lms501kf03 *lcd,
+					const unsigned char *wbuf,
+					unsigned int len)
+{
+	int ret = 0, i = 0;
+
+	while (i < len) {
+		if (i == 0)
+			ret = lms501kf03_spi_write(lcd, COMMAND_ONLY, wbuf[i]);
+		else
+			ret = lms501kf03_spi_write(lcd, DATA_ONLY, wbuf[i]);
+		if (ret)
+			break;
+		i += 1;
+	}
+
+	return ret;
+}
+
+static int lms501kf03_ldi_init(struct lms501kf03 *lcd)
+{
+	int ret, i;
+	static const unsigned char *init_seq[] = {
+		seq_password,
+		seq_power,
+		seq_display,
+		seq_rgb_if,
+		seq_display_inv,
+		seq_vcom,
+		seq_gate,
+		seq_panel,
+		seq_col_mod,
+		seq_w_gamma,
+		seq_rgb_gamma,
+		seq_sleep_out,
+	};
+
+	static const unsigned int size_seq[] = {
+		ARRAY_SIZE(seq_password),
+		ARRAY_SIZE(seq_power),
+		ARRAY_SIZE(seq_display),
+		ARRAY_SIZE(seq_rgb_if),
+		ARRAY_SIZE(seq_display_inv),
+		ARRAY_SIZE(seq_vcom),
+		ARRAY_SIZE(seq_gate),
+		ARRAY_SIZE(seq_panel),
+		ARRAY_SIZE(seq_col_mod),
+		ARRAY_SIZE(seq_w_gamma),
+		ARRAY_SIZE(seq_rgb_gamma),
+		ARRAY_SIZE(seq_sleep_out),
+	};
+
+	for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
+		ret = lms501kf03_panel_send_sequence(lcd, init_seq[i],
+						size_seq[i]);
+		if (ret)
+			break;
+	}
+	/*
+	 * According to the datasheet, 120ms delay time is required.
+	 * After sleep out sequence, command is blocked for 120ms.
+	 * Thus, LDI should wait for 120ms.
+	 */
+	msleep(120);
+
+	return ret;
+}
+
+static int lms501kf03_ldi_enable(struct lms501kf03 *lcd)
+{
+	return lms501kf03_panel_send_sequence(lcd, seq_display_on,
+					ARRAY_SIZE(seq_display_on));
+}
+
+static int lms501kf03_ldi_disable(struct lms501kf03 *lcd)
+{
+	return lms501kf03_panel_send_sequence(lcd, seq_display_off,
+					ARRAY_SIZE(seq_display_off));
+}
+
+static int lms501kf03_power_is_on(int power)
+{
+	return (power) <= FB_BLANK_NORMAL;
+}
+
+static int lms501kf03_power_on(struct lms501kf03 *lcd)
+{
+	int ret = 0;
+	struct lcd_platform_data *pd;
+
+	pd = lcd->lcd_pd;
+
+	if (!pd->power_on) {
+		dev_err(lcd->dev, "power_on is NULL.\n");
+		return -EINVAL;
+	} else {
+		pd->power_on(lcd->ld, 1);
+		msleep(pd->power_on_delay);
+	}
+
+	if (!pd->reset) {
+		dev_err(lcd->dev, "reset is NULL.\n");
+		return -EINVAL;
+	} else {
+		pd->reset(lcd->ld);
+		msleep(pd->reset_delay);
+	}
+
+	ret = lms501kf03_ldi_init(lcd);
+	if (ret) {
+		dev_err(lcd->dev, "failed to initialize ldi.\n");
+		return ret;
+	}
+
+	ret = lms501kf03_ldi_enable(lcd);
+	if (ret) {
+		dev_err(lcd->dev, "failed to enable ldi.\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int lms501kf03_power_off(struct lms501kf03 *lcd)
+{
+	int ret = 0;
+	struct lcd_platform_data *pd;
+
+	pd = lcd->lcd_pd;
+
+	ret = lms501kf03_ldi_disable(lcd);
+	if (ret) {
+		dev_err(lcd->dev, "lcd setting failed.\n");
+		return -EIO;
+	}
+
+	msleep(pd->power_off_delay);
+
+	pd->power_on(lcd->ld, 0);
+
+	return 0;
+}
+
+static int lms501kf03_power(struct lms501kf03 *lcd, int power)
+{
+	int ret = 0;
+
+	if (lms501kf03_power_is_on(power) &&
+		!lms501kf03_power_is_on(lcd->power))
+		ret = lms501kf03_power_on(lcd);
+	else if (!lms501kf03_power_is_on(power) &&
+		lms501kf03_power_is_on(lcd->power))
+		ret = lms501kf03_power_off(lcd);
+
+	if (!ret)
+		lcd->power = power;
+
+	return ret;
+}
+
+static int lms501kf03_get_power(struct lcd_device *ld)
+{
+	struct lms501kf03 *lcd = lcd_get_data(ld);
+
+	return lcd->power;
+}
+
+static int lms501kf03_set_power(struct lcd_device *ld, int power)
+{
+	struct lms501kf03 *lcd = lcd_get_data(ld);
+
+	if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN &&
+		power != FB_BLANK_NORMAL) {
+		dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");
+		return -EINVAL;
+	}
+
+	return lms501kf03_power(lcd, power);
+}
+
+static struct lcd_ops lms501kf03_lcd_ops = {
+	.get_power = lms501kf03_get_power,
+	.set_power = lms501kf03_set_power,
+};
+
+static int lms501kf03_probe(struct spi_device *spi)
+{
+	struct lms501kf03 *lcd = NULL;
+	struct lcd_device *ld = NULL;
+	int ret = 0;
+
+	lcd = devm_kzalloc(&spi->dev, sizeof(struct lms501kf03), GFP_KERNEL);
+	if (!lcd)
+		return -ENOMEM;
+
+	/* lms501kf03 lcd panel uses 3-wire 9-bit SPI Mode. */
+	spi->bits_per_word = 9;
+
+	ret = spi_setup(spi);
+	if (ret < 0) {
+		dev_err(&spi->dev, "spi setup failed.\n");
+		return ret;
+	}
+
+	lcd->spi = spi;
+	lcd->dev = &spi->dev;
+
+	lcd->lcd_pd = spi->dev.platform_data;
+	if (!lcd->lcd_pd) {
+		dev_err(&spi->dev, "platform data is NULL\n");
+		return -EINVAL;
+	}
+
+	ld = lcd_device_register("lms501kf03", &spi->dev, lcd,
+				&lms501kf03_lcd_ops);
+	if (IS_ERR(ld))
+		return PTR_ERR(ld);
+
+	lcd->ld = ld;
+
+	if (!lcd->lcd_pd->lcd_enabled) {
+		/*
+		 * if lcd panel was off from bootloader then
+		 * current lcd status is powerdown and then
+		 * it enables lcd panel.
+		 */
+		lcd->power = FB_BLANK_POWERDOWN;
+
+		lms501kf03_power(lcd, FB_BLANK_UNBLANK);
+	} else {
+		lcd->power = FB_BLANK_UNBLANK;
+	}
+
+	spi_set_drvdata(spi, lcd);
+
+	dev_info(&spi->dev, "lms501kf03 panel driver has been probed.\n");
+
+	return 0;
+}
+
+static int lms501kf03_remove(struct spi_device *spi)
+{
+	struct lms501kf03 *lcd = spi_get_drvdata(spi);
+
+	lms501kf03_power(lcd, FB_BLANK_POWERDOWN);
+	lcd_device_unregister(lcd->ld);
+
+	return 0;
+}
+
+#if defined(CONFIG_PM)
+
+static int lms501kf03_suspend(struct spi_device *spi, pm_message_t mesg)
+{
+	struct lms501kf03 *lcd = spi_get_drvdata(spi);
+
+	dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power);
+
+	/*
+	 * when lcd panel is suspend, lcd panel becomes off
+	 * regardless of status.
+	 */
+	return lms501kf03_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+static int lms501kf03_resume(struct spi_device *spi)
+{
+	struct lms501kf03 *lcd = spi_get_drvdata(spi);
+
+	lcd->power = FB_BLANK_POWERDOWN;
+
+	return lms501kf03_power(lcd, FB_BLANK_UNBLANK);
+}
+#else
+#define lms501kf03_suspend	NULL
+#define lms501kf03_resume	NULL
+#endif
+
+static void lms501kf03_shutdown(struct spi_device *spi)
+{
+	struct lms501kf03 *lcd = spi_get_drvdata(spi);
+
+	lms501kf03_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+static struct spi_driver lms501kf03_driver = {
+	.driver = {
+		.name	= "lms501kf03",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= lms501kf03_probe,
+	.remove		= lms501kf03_remove,
+	.shutdown	= lms501kf03_shutdown,
+	.suspend	= lms501kf03_suspend,
+	.resume		= lms501kf03_resume,
+};
+
+module_spi_driver(lms501kf03_driver);
+
+MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
+MODULE_DESCRIPTION("lms501kf03 LCD Driver");
+MODULE_LICENSE("GPL");

drivers/video/backlight/lp855x_bl.c

@@ -17,21 +17,48 @@
 #include <linux/platform_data/lp855x.h>
 #include <linux/pwm.h>
 
-/* Registers */
-#define BRIGHTNESS_CTRL		0x00
-#define DEVICE_CTRL		0x01
-#define EEPROM_START		0xA0
-#define EEPROM_END		0xA7
-#define EPROM_START		0xA0
-#define EPROM_END		0xAF
+/* LP8550/1/2/3/6 Registers */
+#define LP855X_BRIGHTNESS_CTRL		0x00
+#define LP855X_DEVICE_CTRL		0x01
+#define LP855X_EEPROM_START		0xA0
+#define LP855X_EEPROM_END		0xA7
+#define LP8556_EPROM_START		0xA0
+#define LP8556_EPROM_END		0xAF
+
+/* LP8557 Registers */
+#define LP8557_BL_CMD			0x00
+#define LP8557_BL_MASK			0x01
+#define LP8557_BL_ON			0x01
+#define LP8557_BL_OFF			0x00
+#define LP8557_BRIGHTNESS_CTRL		0x04
+#define LP8557_CONFIG			0x10
+#define LP8557_EPROM_START		0x10
+#define LP8557_EPROM_END		0x1E
 
 #define BUF_SIZE		20
 #define DEFAULT_BL_NAME		"lcd-backlight"
 #define MAX_BRIGHTNESS		255
 
+struct lp855x;
+
+/*
+ * struct lp855x_device_config
+ * @pre_init_device: init device function call before updating the brightness
+ * @reg_brightness: register address for brigthenss control
+ * @reg_devicectrl: register address for device control
+ * @post_init_device: late init device function call
+ */
+struct lp855x_device_config {
+	int (*pre_init_device)(struct lp855x *);
+	u8 reg_brightness;
+	u8 reg_devicectrl;
+	int (*post_init_device)(struct lp855x *);
+};
+
 struct lp855x {
 	const char *chipname;
 	enum lp855x_chip_id chip_id;
+	struct lp855x_device_config *cfg;
 	struct i2c_client *client;
 	struct backlight_device *bl;
 	struct device *dev;
@@ -39,9 +66,15 @@ struct lp855x {
 	struct pwm_device *pwm;
 };
 
-static int lp855x_read_byte(struct lp855x *lp, u8 reg, u8 *data)
+static int lp855x_write_byte(struct lp855x *lp, u8 reg, u8 data)
+{
+	return i2c_smbus_write_byte_data(lp->client, reg, data);
+}
+
+static int lp855x_update_bit(struct lp855x *lp, u8 reg, u8 mask, u8 data)
 {
 	int ret;
+	u8 tmp;
 
 	ret = i2c_smbus_read_byte_data(lp->client, reg);
 	if (ret < 0) {
@@ -49,13 +82,11 @@ static int lp855x_read_byte(struct lp855x *lp, u8 reg, u8 *data)
 		return ret;
 	}
 
-	*data = (u8)ret;
-	return 0;
-}
+	tmp = (u8)ret;
+	tmp &= ~mask;
+	tmp |= data & mask;
 
-static int lp855x_write_byte(struct lp855x *lp, u8 reg, u8 data)
-{
-	return i2c_smbus_write_byte_data(lp->client, reg, data);
+	return lp855x_write_byte(lp, reg, tmp);
 }
 
 static bool lp855x_is_valid_rom_area(struct lp855x *lp, u8 addr)
@@ -67,12 +98,16 @@ static bool lp855x_is_valid_rom_area(struct lp855x *lp, u8 addr)
 	case LP8551:
 	case LP8552:
 	case LP8553:
-		start = EEPROM_START;
-		end = EEPROM_END;
+		start = LP855X_EEPROM_START;
+		end = LP855X_EEPROM_END;
 		break;
 	case LP8556:
-		start = EPROM_START;
-		end = EPROM_END;
+		start = LP8556_EPROM_START;
+		end = LP8556_EPROM_END;
+		break;
+	case LP8557:
+		start = LP8557_EPROM_START;
+		end = LP8557_EPROM_END;
 		break;
 	default:
 		return false;
@@ -81,21 +116,76 @@ static bool lp855x_is_valid_rom_area(struct lp855x *lp, u8 addr)
 	return (addr >= start && addr <= end);
 }
 
-static int lp855x_init_registers(struct lp855x *lp)
+static int lp8557_bl_off(struct lp855x *lp)
+{
+	/* BL_ON = 0 before updating EPROM settings */
+	return lp855x_update_bit(lp, LP8557_BL_CMD, LP8557_BL_MASK,
+				LP8557_BL_OFF);
+}
+
+static int lp8557_bl_on(struct lp855x *lp)
+{
+	/* BL_ON = 1 after updating EPROM settings */
+	return lp855x_update_bit(lp, LP8557_BL_CMD, LP8557_BL_MASK,
+				LP8557_BL_ON);
+}
+
+static struct lp855x_device_config lp855x_dev_cfg = {
+	.reg_brightness = LP855X_BRIGHTNESS_CTRL,
+	.reg_devicectrl = LP855X_DEVICE_CTRL,
+};
+
+static struct lp855x_device_config lp8557_dev_cfg = {
+	.reg_brightness = LP8557_BRIGHTNESS_CTRL,
+	.reg_devicectrl = LP8557_CONFIG,
+	.pre_init_device = lp8557_bl_off,
+	.post_init_device = lp8557_bl_on,
+};
+
+/*
+ * Device specific configuration flow
+ *
+ *    a) pre_init_device(optional)
+ *    b) update the brightness register
+ *    c) update device control register
+ *    d) update ROM area(optional)
+ *    e) post_init_device(optional)
+ *
+ */
+static int lp855x_configure(struct lp855x *lp)
 {
 	u8 val, addr;
 	int i, ret;
 	struct lp855x_platform_data *pd = lp->pdata;
 
+	switch (lp->chip_id) {
+	case LP8550 ... LP8556:
+		lp->cfg = &lp855x_dev_cfg;
+		break;
+	case LP8557:
+		lp->cfg = &lp8557_dev_cfg;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (lp->cfg->pre_init_device) {
+		ret = lp->cfg->pre_init_device(lp);
+		if (ret) {
+			dev_err(lp->dev, "pre init device err: %d\n", ret);
+			goto err;
+		}
+	}
+
 	val = pd->initial_brightness;
-	ret = lp855x_write_byte(lp, BRIGHTNESS_CTRL, val);
+	ret = lp855x_write_byte(lp, lp->cfg->reg_brightness, val);
 	if (ret)
-		return ret;
+		goto err;
 
 	val = pd->device_control;
-	ret = lp855x_write_byte(lp, DEVICE_CTRL, val);
+	ret = lp855x_write_byte(lp, lp->cfg->reg_devicectrl, val);
 	if (ret)
-		return ret;
+		goto err;
 
 	if (pd->load_new_rom_data && pd->size_program) {
 		for (i = 0; i < pd->size_program; i++) {
@@ -106,10 +196,21 @@ static int lp855x_init_registers(struct lp855x *lp)
 
 			ret = lp855x_write_byte(lp, addr, val);
 			if (ret)
-				return ret;
+				goto err;
+		}
+	}
+
+	if (lp->cfg->post_init_device) {
+		ret = lp->cfg->post_init_device(lp);
+		if (ret) {
+			dev_err(lp->dev, "post init device err: %d\n", ret);
+			goto err;
 		}
 	}
 
+	return 0;
+
+err:
 	return ret;
 }
 
@@ -151,7 +252,7 @@ static int lp855x_bl_update_status(struct backlight_device *bl)
 
 	} else if (mode == REGISTER_BASED) {
 		u8 val = bl->props.brightness;
-		lp855x_write_byte(lp, BRIGHTNESS_CTRL, val);
+		lp855x_write_byte(lp, lp->cfg->reg_brightness, val);
 	}
 
 	return 0;
@@ -159,16 +260,6 @@ static int lp855x_bl_update_status(struct backlight_device *bl)
 
 static int lp855x_bl_get_brightness(struct backlight_device *bl)
 {
-	struct lp855x *lp = bl_get_data(bl);
-	enum lp855x_brightness_ctrl_mode mode = lp->pdata->mode;
-
-	if (mode == REGISTER_BASED) {
-		u8 val = 0;
-
-		lp855x_read_byte(lp, BRIGHTNESS_CTRL, &val);
-		bl->props.brightness = val;
-	}
-
 	return bl->props.brightness;
 }
 
@@ -271,11 +362,10 @@ static int lp855x_probe(struct i2c_client *cl, const struct i2c_device_id *id)
 	lp->chip_id = id->driver_data;
 	i2c_set_clientdata(cl, lp);
 
-	ret = lp855x_init_registers(lp);
+	ret = lp855x_configure(lp);
 	if (ret) {
-		dev_err(lp->dev, "i2c communication err: %d", ret);
-		if (mode == REGISTER_BASED)
-			goto err_dev;
+		dev_err(lp->dev, "device config err: %d", ret);
+		goto err_dev;
 	}
 
 	ret = lp855x_backlight_register(lp);
@@ -318,6 +408,7 @@ static const struct i2c_device_id lp855x_ids[] = {
 	{"lp8552", LP8552},
 	{"lp8553", LP8553},
 	{"lp8556", LP8556},
+	{"lp8557", LP8557},
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, lp855x_ids);

drivers/video/backlight/ltv350qv.c

@@ -252,7 +252,7 @@ static int ltv350qv_probe(struct spi_device *spi)
 	if (ret)
 		goto out_unregister;
 
-	dev_set_drvdata(&spi->dev, lcd);
+	spi_set_drvdata(spi, lcd);
 
 	return 0;
 
@@ -263,7 +263,7 @@ out_unregister:
 
 static int ltv350qv_remove(struct spi_device *spi)
 {
-	struct ltv350qv *lcd = dev_get_drvdata(&spi->dev);
+	struct ltv350qv *lcd = spi_get_drvdata(spi);
 
 	ltv350qv_power(lcd, FB_BLANK_POWERDOWN);
 	lcd_device_unregister(lcd->ld);
@@ -274,14 +274,14 @@ static int ltv350qv_remove(struct spi_device *spi)
 #ifdef CONFIG_PM
 static int ltv350qv_suspend(struct spi_device *spi, pm_message_t state)
 {
-	struct ltv350qv *lcd = dev_get_drvdata(&spi->dev);
+	struct ltv350qv *lcd = spi_get_drvdata(spi);
 
 	return ltv350qv_power(lcd, FB_BLANK_POWERDOWN);
 }
 
 static int ltv350qv_resume(struct spi_device *spi)
 {
-	struct ltv350qv *lcd = dev_get_drvdata(&spi->dev);
+	struct ltv350qv *lcd = spi_get_drvdata(spi);
 
 	return ltv350qv_power(lcd, FB_BLANK_UNBLANK);
 }
@@ -293,7 +293,7 @@ static int ltv350qv_resume(struct spi_device *spi)
 /* Power down all displays on reboot, poweroff or halt */
 static void ltv350qv_shutdown(struct spi_device *spi)
 {
-	struct ltv350qv *lcd = dev_get_drvdata(&spi->dev);
+	struct ltv350qv *lcd = spi_get_drvdata(spi);
 
 	ltv350qv_power(lcd, FB_BLANK_POWERDOWN);
 }

drivers/video/backlight/omap1_bl.c

@@ -77,7 +77,7 @@ static void omapbl_blank(struct omap_backlight *bl, int mode)
 static int omapbl_suspend(struct platform_device *pdev, pm_message_t state)
 {
 	struct backlight_device *dev = platform_get_drvdata(pdev);
-	struct omap_backlight *bl = dev_get_drvdata(&dev->dev);
+	struct omap_backlight *bl = bl_get_data(dev);
 
 	omapbl_blank(bl, FB_BLANK_POWERDOWN);
 	return 0;
@@ -86,7 +86,7 @@ static int omapbl_suspend(struct platform_device *pdev, pm_message_t state)
 static int omapbl_resume(struct platform_device *pdev)
 {
 	struct backlight_device *dev = platform_get_drvdata(pdev);
-	struct omap_backlight *bl = dev_get_drvdata(&dev->dev);
+	struct omap_backlight *bl = bl_get_data(dev);
 
 	omapbl_blank(bl, bl->powermode);
 	return 0;
@@ -98,7 +98,7 @@ static int omapbl_resume(struct platform_device *pdev)
 
 static int omapbl_set_power(struct backlight_device *dev, int state)
 {
-	struct omap_backlight *bl = dev_get_drvdata(&dev->dev);
+	struct omap_backlight *bl = bl_get_data(dev);
 
 	omapbl_blank(bl, state);
 	bl->powermode = state;
@@ -108,7 +108,7 @@ static int omapbl_set_power(struct backlight_device *dev, int state)
 
 static int omapbl_update_status(struct backlight_device *dev)
 {
-	struct omap_backlight *bl = dev_get_drvdata(&dev->dev);
+	struct omap_backlight *bl = bl_get_data(dev);
 
 	if (bl->current_intensity != dev->props.brightness) {
 		if (bl->powermode == FB_BLANK_UNBLANK)
@@ -124,7 +124,7 @@ static int omapbl_update_status(struct backlight_device *dev)
 
 static int omapbl_get_intensity(struct backlight_device *dev)
 {
-	struct omap_backlight *bl = dev_get_drvdata(&dev->dev);
+	struct omap_backlight *bl = bl_get_data(dev);
 	return bl->current_intensity;
 }
 

drivers/video/backlight/pwm_bl.c

@@ -37,7 +37,7 @@ struct pwm_bl_data {
 
 static int pwm_backlight_update_status(struct backlight_device *bl)
 {
-	struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
+	struct pwm_bl_data *pb = bl_get_data(bl);
 	int brightness = bl->props.brightness;
 	int max = bl->props.max_brightness;
 
@@ -83,7 +83,7 @@ static int pwm_backlight_get_brightness(struct backlight_device *bl)
 static int pwm_backlight_check_fb(struct backlight_device *bl,
 				  struct fb_info *info)
 {
-	struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
+	struct pwm_bl_data *pb = bl_get_data(bl);
 
 	return !pb->check_fb || pb->check_fb(pb->dev, info);
 }
@@ -264,7 +264,7 @@ err_alloc:
 static int pwm_backlight_remove(struct platform_device *pdev)
 {
 	struct backlight_device *bl = platform_get_drvdata(pdev);
-	struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
+	struct pwm_bl_data *pb = bl_get_data(bl);
 
 	backlight_device_unregister(bl);
 	pwm_config(pb->pwm, 0, pb->period);
@@ -278,7 +278,7 @@ static int pwm_backlight_remove(struct platform_device *pdev)
 static int pwm_backlight_suspend(struct device *dev)
 {
 	struct backlight_device *bl = dev_get_drvdata(dev);
-	struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
+	struct pwm_bl_data *pb = bl_get_data(bl);
 
 	if (pb->notify)
 		pb->notify(pb->dev, 0);

drivers/video/backlight/s6e63m0.c

@@ -9,28 +9,19 @@
  * under the terms of the GNU General Public License as published by the
  * Free Software Foundation; either version 2 of the License, or (at your
  * option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
-#include <linux/wait.h>
-#include <linux/fb.h>
+#include <linux/backlight.h>
 #include <linux/delay.h>
+#include <linux/fb.h>
 #include <linux/gpio.h>
-#include <linux/spi/spi.h>
-#include <linux/irq.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/lcd.h>
-#include <linux/backlight.h>
 #include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <linux/wait.h>
 
 #include "s6e63m0_gamma.h"
 
@@ -43,8 +34,6 @@
 #define MIN_BRIGHTNESS		0
 #define MAX_BRIGHTNESS		10
 
-#define POWER_IS_ON(pwr)	((pwr) <= FB_BLANK_NORMAL)
-
 struct s6e63m0 {
 	struct device			*dev;
 	struct spi_device		*spi;
@@ -57,7 +46,7 @@ struct s6e63m0 {
 	struct lcd_platform_data	*lcd_pd;
 };
 
-static const unsigned short SEQ_PANEL_CONDITION_SET[] = {
+static const unsigned short seq_panel_condition_set[] = {
 	0xF8, 0x01,
 	DATA_ONLY, 0x27,
 	DATA_ONLY, 0x27,
@@ -76,7 +65,7 @@ static const unsigned short SEQ_PANEL_CONDITION_SET[] = {
 	ENDDEF, 0x0000
 };
 
-static const unsigned short SEQ_DISPLAY_CONDITION_SET[] = {
+static const unsigned short seq_display_condition_set[] = {
 	0xf2, 0x02,
 	DATA_ONLY, 0x03,
 	DATA_ONLY, 0x1c,
@@ -90,7 +79,7 @@ static const unsigned short SEQ_DISPLAY_CONDITION_SET[] = {
 	ENDDEF, 0x0000
 };
 
-static const unsigned short SEQ_GAMMA_SETTING[] = {
+static const unsigned short seq_gamma_setting[] = {
 	0xfa, 0x00,
 	DATA_ONLY, 0x18,
 	DATA_ONLY, 0x08,
@@ -119,7 +108,7 @@ static const unsigned short SEQ_GAMMA_SETTING[] = {
 	ENDDEF, 0x0000
 };
 
-static const unsigned short SEQ_ETC_CONDITION_SET[] = {
+static const unsigned short seq_etc_condition_set[] = {
 	0xf6, 0x00,
 	DATA_ONLY, 0x8c,
 	DATA_ONLY, 0x07,
@@ -318,47 +307,47 @@ static const unsigned short SEQ_ETC_CONDITION_SET[] = {
 	ENDDEF, 0x0000
 };
 
-static const unsigned short SEQ_ACL_ON[] = {
+static const unsigned short seq_acl_on[] = {
 	/* ACL on */
 	0xc0, 0x01,
 
 	ENDDEF, 0x0000
 };
 
-static const unsigned short SEQ_ACL_OFF[] = {
+static const unsigned short seq_acl_off[] = {
 	/* ACL off */
 	0xc0, 0x00,
 
 	ENDDEF, 0x0000
 };
 
-static const unsigned short SEQ_ELVSS_ON[] = {
+static const unsigned short seq_elvss_on[] = {
 	/* ELVSS on */
 	0xb1, 0x0b,
 
 	ENDDEF, 0x0000
 };
 
-static const unsigned short SEQ_ELVSS_OFF[] = {
+static const unsigned short seq_elvss_off[] = {
 	/* ELVSS off */
 	0xb1, 0x0a,
 
 	ENDDEF, 0x0000
 };
 
-static const unsigned short SEQ_STAND_BY_OFF[] = {
+static const unsigned short seq_stand_by_off[] = {
 	0x11, COMMAND_ONLY,
 
 	ENDDEF, 0x0000
 };
 
-static const unsigned short SEQ_STAND_BY_ON[] = {
+static const unsigned short seq_stand_by_on[] = {
 	0x10, COMMAND_ONLY,
 
 	ENDDEF, 0x0000
 };
 
-static const unsigned short SEQ_DISPLAY_ON[] = {
+static const unsigned short seq_display_on[] = {
 	0x29, COMMAND_ONLY,
 
 	ENDDEF, 0x0000
@@ -406,8 +395,9 @@ static int s6e63m0_panel_send_sequence(struct s6e63m0 *lcd,
 			ret = s6e63m0_spi_write(lcd, wbuf[i], wbuf[i+1]);
 			if (ret)
 				break;
-		} else
-			udelay(wbuf[i+1]*1000);
+		} else {
+			msleep(wbuf[i+1]);
+		}
 		i += 2;
 	}
 
@@ -457,12 +447,12 @@ static int s6e63m0_ldi_init(struct s6e63m0 *lcd)
 {
 	int ret, i;
 	const unsigned short *init_seq[] = {
-		SEQ_PANEL_CONDITION_SET,
-		SEQ_DISPLAY_CONDITION_SET,
-		SEQ_GAMMA_SETTING,
-		SEQ_ETC_CONDITION_SET,
-		SEQ_ACL_ON,
-		SEQ_ELVSS_ON,
+		seq_panel_condition_set,
+		seq_display_condition_set,
+		seq_gamma_setting,
+		seq_etc_condition_set,
+		seq_acl_on,
+		seq_elvss_on,
 	};
 
 	for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
@@ -478,8 +468,8 @@ static int s6e63m0_ldi_enable(struct s6e63m0 *lcd)
 {
 	int ret = 0, i;
 	const unsigned short *enable_seq[] = {
-		SEQ_STAND_BY_OFF,
-		SEQ_DISPLAY_ON,
+		seq_stand_by_off,
+		seq_display_on,
 	};
 
 	for (i = 0; i < ARRAY_SIZE(enable_seq); i++) {
@@ -495,43 +485,39 @@ static int s6e63m0_ldi_disable(struct s6e63m0 *lcd)
 {
 	int ret;
 
-	ret = s6e63m0_panel_send_sequence(lcd, SEQ_STAND_BY_ON);
+	ret = s6e63m0_panel_send_sequence(lcd, seq_stand_by_on);
 
 	return ret;
 }
 
+static int s6e63m0_power_is_on(int power)
+{
+	return power <= FB_BLANK_NORMAL;
+}
+
 static int s6e63m0_power_on(struct s6e63m0 *lcd)
 {
 	int ret = 0;
-	struct lcd_platform_data *pd = NULL;
-	struct backlight_device *bd = NULL;
+	struct lcd_platform_data *pd;
+	struct backlight_device *bd;
 
 	pd = lcd->lcd_pd;
-	if (!pd) {
-		dev_err(lcd->dev, "platform data is NULL.\n");
-		return -EFAULT;
-	}
-
 	bd = lcd->bd;
-	if (!bd) {
-		dev_err(lcd->dev, "backlight device is NULL.\n");
-		return -EFAULT;
-	}
 
 	if (!pd->power_on) {
 		dev_err(lcd->dev, "power_on is NULL.\n");
-		return -EFAULT;
+		return -EINVAL;
 	} else {
 		pd->power_on(lcd->ld, 1);
-		mdelay(pd->power_on_delay);
+		msleep(pd->power_on_delay);
 	}
 
 	if (!pd->reset) {
 		dev_err(lcd->dev, "reset is NULL.\n");
-		return -EFAULT;
+		return -EINVAL;
 	} else {
 		pd->reset(lcd->ld);
-		mdelay(pd->reset_delay);
+		msleep(pd->reset_delay);
 	}
 
 	ret = s6e63m0_ldi_init(lcd);
@@ -558,14 +544,10 @@ static int s6e63m0_power_on(struct s6e63m0 *lcd)
 
 static int s6e63m0_power_off(struct s6e63m0 *lcd)
 {
-	int ret = 0;
-	struct lcd_platform_data *pd = NULL;
+	int ret;
+	struct lcd_platform_data *pd;
 
 	pd = lcd->lcd_pd;
-	if (!pd) {
-		dev_err(lcd->dev, "platform data is NULL.\n");
-		return -EFAULT;
-	}
 
 	ret = s6e63m0_ldi_disable(lcd);
 	if (ret) {
@@ -573,13 +555,9 @@ static int s6e63m0_power_off(struct s6e63m0 *lcd)
 		return -EIO;
 	}
 
-	mdelay(pd->power_off_delay);
+	msleep(pd->power_off_delay);
 
-	if (!pd->power_on) {
-		dev_err(lcd->dev, "power_on is NULL.\n");
-		return -EFAULT;
-	} else
-		pd->power_on(lcd->ld, 0);
+	pd->power_on(lcd->ld, 0);
 
 	return 0;
 }
@@ -588,9 +566,9 @@ static int s6e63m0_power(struct s6e63m0 *lcd, int power)
 {
 	int ret = 0;
 
-	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))
+	if (s6e63m0_power_is_on(power) && !s6e63m0_power_is_on(lcd->power))
 		ret = s6e63m0_power_on(lcd);
-	else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))
+	else if (!s6e63m0_power_is_on(power) && s6e63m0_power_is_on(lcd->power))
 		ret = s6e63m0_power_off(lcd);
 
 	if (!ret)
@@ -760,7 +738,7 @@ static int s6e63m0_probe(struct spi_device *spi)
 	lcd->lcd_pd = spi->dev.platform_data;
 	if (!lcd->lcd_pd) {
 		dev_err(&spi->dev, "platform data is NULL.\n");
-		return -EFAULT;
+		return -EINVAL;
 	}
 
 	ld = lcd_device_register("s6e63m0", &spi->dev, lcd, &s6e63m0_lcd_ops);
@@ -788,7 +766,7 @@ static int s6e63m0_probe(struct spi_device *spi)
 	 * know that.
 	 */
 	lcd->gamma_table_count =
-	    sizeof(gamma_table) / (MAX_GAMMA_LEVEL * sizeof(int));
+	    sizeof(gamma_table) / (MAX_GAMMA_LEVEL * sizeof(int *));
 
 	ret = device_create_file(&(spi->dev), &dev_attr_gamma_mode);
 	if (ret < 0)
@@ -811,10 +789,11 @@ static int s6e63m0_probe(struct spi_device *spi)
 		lcd->power = FB_BLANK_POWERDOWN;
 
 		s6e63m0_power(lcd, FB_BLANK_UNBLANK);
-	} else
+	} else {
 		lcd->power = FB_BLANK_UNBLANK;
+	}
 
-	dev_set_drvdata(&spi->dev, lcd);
+	spi_set_drvdata(spi, lcd);
 
 	dev_info(&spi->dev, "s6e63m0 panel driver has been probed.\n");
 
@@ -827,7 +806,7 @@ out_lcd_unregister:
 
 static int s6e63m0_remove(struct spi_device *spi)
 {
-	struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev);
+	struct s6e63m0 *lcd = spi_get_drvdata(spi);
 
 	s6e63m0_power(lcd, FB_BLANK_POWERDOWN);
 	device_remove_file(&spi->dev, &dev_attr_gamma_table);
@@ -839,44 +818,26 @@ static int s6e63m0_remove(struct spi_device *spi)
 }
 
 #if defined(CONFIG_PM)
-static unsigned int before_power;
-
 static int s6e63m0_suspend(struct spi_device *spi, pm_message_t mesg)
 {
-	int ret = 0;
-	struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev);
+	struct s6e63m0 *lcd = spi_get_drvdata(spi);
 
 	dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power);
 
-	before_power = lcd->power;
-
 	/*
 	 * when lcd panel is suspend, lcd panel becomes off
 	 * regardless of status.
 	 */
-	ret = s6e63m0_power(lcd, FB_BLANK_POWERDOWN);
-
-	return ret;
+	return s6e63m0_power(lcd, FB_BLANK_POWERDOWN);
 }
 
 static int s6e63m0_resume(struct spi_device *spi)
 {
-	int ret = 0;
-	struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev);
-
-	/*
-	 * after suspended, if lcd panel status is FB_BLANK_UNBLANK
-	 * (at that time, before_power is FB_BLANK_UNBLANK) then
-	 * it changes that status to FB_BLANK_POWERDOWN to get lcd on.
-	 */
-	if (before_power == FB_BLANK_UNBLANK)
-		lcd->power = FB_BLANK_POWERDOWN;
+	struct s6e63m0 *lcd = spi_get_drvdata(spi);
 
-	dev_dbg(&spi->dev, "before_power = %d\n", before_power);
+	lcd->power = FB_BLANK_POWERDOWN;
 
-	ret = s6e63m0_power(lcd, before_power);
-
-	return ret;
+	return s6e63m0_power(lcd, FB_BLANK_UNBLANK);
 }
 #else
 #define s6e63m0_suspend		NULL
@@ -886,7 +847,7 @@ static int s6e63m0_resume(struct spi_device *spi)
 /* Power down all displays on reboot, poweroff or halt. */
 static void s6e63m0_shutdown(struct spi_device *spi)
 {
-	struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev);
+	struct s6e63m0 *lcd = spi_get_drvdata(spi);
 
 	s6e63m0_power(lcd, FB_BLANK_POWERDOWN);
 }

drivers/video/backlight/tdo24m.c

@@ -390,7 +390,7 @@ static int tdo24m_probe(struct spi_device *spi)
 	if (IS_ERR(lcd->lcd_dev))
 		return PTR_ERR(lcd->lcd_dev);
 
-	dev_set_drvdata(&spi->dev, lcd);
+	spi_set_drvdata(spi, lcd);
 	err = tdo24m_power(lcd, FB_BLANK_UNBLANK);
 	if (err)
 		goto out_unregister;
@@ -404,7 +404,7 @@ out_unregister:
 
 static int tdo24m_remove(struct spi_device *spi)
 {
-	struct tdo24m *lcd = dev_get_drvdata(&spi->dev);
+	struct tdo24m *lcd = spi_get_drvdata(spi);
 
 	tdo24m_power(lcd, FB_BLANK_POWERDOWN);
 	lcd_device_unregister(lcd->lcd_dev);
@@ -415,14 +415,14 @@ static int tdo24m_remove(struct spi_device *spi)
 #ifdef CONFIG_PM
 static int tdo24m_suspend(struct spi_device *spi, pm_message_t state)
 {
-	struct tdo24m *lcd = dev_get_drvdata(&spi->dev);
+	struct tdo24m *lcd = spi_get_drvdata(spi);
 
 	return tdo24m_power(lcd, FB_BLANK_POWERDOWN);
 }
 
 static int tdo24m_resume(struct spi_device *spi)
 {
-	struct tdo24m *lcd = dev_get_drvdata(&spi->dev);
+	struct tdo24m *lcd = spi_get_drvdata(spi);
 
 	return tdo24m_power(lcd, FB_BLANK_UNBLANK);
 }
@@ -434,7 +434,7 @@ static int tdo24m_resume(struct spi_device *spi)
 /* Power down all displays on reboot, poweroff or halt */
 static void tdo24m_shutdown(struct spi_device *spi)
 {
-	struct tdo24m *lcd = dev_get_drvdata(&spi->dev);
+	struct tdo24m *lcd = spi_get_drvdata(spi);
 
 	tdo24m_power(lcd, FB_BLANK_POWERDOWN);
 }

drivers/video/backlight/tosa_bl.c

@@ -54,7 +54,7 @@ static void tosa_bl_set_backlight(struct tosa_bl_data *data, int brightness)
 static int tosa_bl_update_status(struct backlight_device *dev)
 {
 	struct backlight_properties *props = &dev->props;
-	struct tosa_bl_data *data = dev_get_drvdata(&dev->dev);
+	struct tosa_bl_data *data = bl_get_data(dev);
 	int power = max(props->power, props->fb_blank);
 	int brightness = props->brightness;
 

drivers/video/backlight/tosa_lcd.c

@@ -193,7 +193,7 @@ static int tosa_lcd_probe(struct spi_device *spi)
 		return ret;
 
 	data->spi = spi;
-	dev_set_drvdata(&spi->dev, data);
+	spi_set_drvdata(spi, data);
 
 	ret = devm_gpio_request_one(&spi->dev, TOSA_GPIO_TG_ON,
 				GPIOF_OUT_INIT_LOW, "tg #pwr");
@@ -220,13 +220,13 @@ static int tosa_lcd_probe(struct spi_device *spi)
 err_register:
 	tosa_lcd_tg_off(data);
 err_gpio_tg:
-	dev_set_drvdata(&spi->dev, NULL);
+	spi_set_drvdata(spi, NULL);
 	return ret;
 }
 
 static int tosa_lcd_remove(struct spi_device *spi)
 {
-	struct tosa_lcd_data *data = dev_get_drvdata(&spi->dev);
+	struct tosa_lcd_data *data = spi_get_drvdata(spi);
 
 	lcd_device_unregister(data->lcd);
 
@@ -235,7 +235,7 @@ static int tosa_lcd_remove(struct spi_device *spi)
 
 	tosa_lcd_tg_off(data);
 
-	dev_set_drvdata(&spi->dev, NULL);
+	spi_set_drvdata(spi, NULL);
 
 	return 0;
 }
@@ -243,7 +243,7 @@ static int tosa_lcd_remove(struct spi_device *spi)
 #ifdef CONFIG_PM
 static int tosa_lcd_suspend(struct spi_device *spi, pm_message_t state)
 {
-	struct tosa_lcd_data *data = dev_get_drvdata(&spi->dev);
+	struct tosa_lcd_data *data = spi_get_drvdata(spi);
 
 	tosa_lcd_tg_off(data);
 
@@ -252,7 +252,7 @@ static int tosa_lcd_suspend(struct spi_device *spi, pm_message_t state)
 
 static int tosa_lcd_resume(struct spi_device *spi)
 {
-	struct tosa_lcd_data *data = dev_get_drvdata(&spi->dev);
+	struct tosa_lcd_data *data = spi_get_drvdata(spi);
 
 	tosa_lcd_tg_init(data);
 	if (POWER_IS_ON(data->lcd_power))

drivers/video/backlight/vgg2432a4.c

@@ -208,12 +208,11 @@ static int vgg2432a4_lcd_init(struct ili9320 *lcd,
 #ifdef CONFIG_PM
 static int vgg2432a4_suspend(struct spi_device *spi, pm_message_t state)
 {
-	return ili9320_suspend(dev_get_drvdata(&spi->dev), state);
+	return ili9320_suspend(spi_get_drvdata(spi), state);
 }
-
 static int vgg2432a4_resume(struct spi_device *spi)
 {
-	return ili9320_resume(dev_get_drvdata(&spi->dev));
+	return ili9320_resume(spi_get_drvdata(spi));
 }
 #else
 #define vgg2432a4_suspend	NULL
@@ -242,12 +241,12 @@ static int vgg2432a4_probe(struct spi_device *spi)
 
 static int vgg2432a4_remove(struct spi_device *spi)
 {
-	return ili9320_remove(dev_get_drvdata(&spi->dev));
+	return ili9320_remove(spi_get_drvdata(spi));
 }
 
 static void vgg2432a4_shutdown(struct spi_device *spi)
 {
-	ili9320_shutdown(dev_get_drvdata(&spi->dev));
+	ili9320_shutdown(spi_get_drvdata(spi));
 }
 
 static struct spi_driver vgg2432a4_driver = {

drivers/video/console/fbcon.c

@@ -1242,8 +1242,16 @@ static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
 	if (!height || !width)
 		return;
 
-	if (sy < vc->vc_top && vc->vc_top == logo_lines)
+	if (sy < vc->vc_top && vc->vc_top == logo_lines) {
 		vc->vc_top = 0;
+		/*
+		 * If the font dimensions are not an integral of the display
+		 * dimensions then the ops->clear below won't end up clearing
+		 * the margins.  Call clear_margins here in case the logo
+		 * bitmap stretched into the margin area.
+		 */
+		fbcon_clear_margins(vc, 0);
+	}
 
 	/* Split blits that cross physical y_wrap boundary */
 

drivers/video/exynos/exynos_dp_core.c

@@ -965,10 +965,11 @@ static struct exynos_dp_platdata *exynos_dp_dt_parse_pdata(struct device *dev)
 
 static int exynos_dp_dt_parse_phydata(struct exynos_dp_device *dp)
 {
-	struct device_node *dp_phy_node;
+	struct device_node *dp_phy_node = of_node_get(dp->dev->of_node);
 	u32 phy_base;
+	int ret = 0;
 
-	dp_phy_node = of_find_node_by_name(dp->dev->of_node, "dptx-phy");
+	dp_phy_node = of_find_node_by_name(dp_phy_node, "dptx-phy");
 	if (!dp_phy_node) {
 		dev_err(dp->dev, "could not find dptx-phy node\n");
 		return -ENODEV;
@@ -976,22 +977,28 @@ static int exynos_dp_dt_parse_phydata(struct exynos_dp_device *dp)
 
 	if (of_property_read_u32(dp_phy_node, "reg", &phy_base)) {
 		dev_err(dp->dev, "faild to get reg for dptx-phy\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto err;
 	}
 
 	if (of_property_read_u32(dp_phy_node, "samsung,enable-mask",
 				&dp->enable_mask)) {
 		dev_err(dp->dev, "faild to get enable-mask for dptx-phy\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto err;
 	}
 
 	dp->phy_addr = ioremap(phy_base, SZ_4);
 	if (!dp->phy_addr) {
 		dev_err(dp->dev, "failed to ioremap dp-phy\n");
-		return -ENOMEM;
+		ret = -ENOMEM;
+		goto err;
 	}
 
-	return 0;
+err:
+	of_node_put(dp_phy_node);
+
+	return ret;
 }
 
 static void exynos_dp_phy_init(struct exynos_dp_device *dp)
@@ -1117,8 +1124,6 @@ static int exynos_dp_remove(struct platform_device *pdev)
 	struct exynos_dp_platdata *pdata = pdev->dev.platform_data;
 	struct exynos_dp_device *dp = platform_get_drvdata(pdev);
 
-	disable_irq(dp->irq);
-
 	flush_work(&dp->hotplug_work);
 
 	if (pdev->dev.of_node) {
@@ -1141,6 +1146,8 @@ static int exynos_dp_suspend(struct device *dev)
 	struct exynos_dp_platdata *pdata = dev->platform_data;
 	struct exynos_dp_device *dp = dev_get_drvdata(dev);
 
+	disable_irq(dp->irq);
+
 	flush_work(&dp->hotplug_work);
 
 	if (dev->of_node) {

drivers/video/exynos/exynos_mipi_dsi.c

@@ -338,7 +338,8 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
 	struct mipi_dsim_ddi *dsim_ddi;
 	int ret = -EINVAL;
 
-	dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL);
+	dsim = devm_kzalloc(&pdev->dev, sizeof(struct mipi_dsim_device),
+				GFP_KERNEL);
 	if (!dsim) {
 		dev_err(&pdev->dev, "failed to allocate dsim object.\n");
 		return -ENOMEM;
@@ -352,13 +353,13 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
 	dsim_pd = (struct mipi_dsim_platform_data *)dsim->pd;
 	if (dsim_pd == NULL) {
 		dev_err(&pdev->dev, "failed to get platform data for dsim.\n");
-		goto err_clock_get;
+		return -EINVAL;
 	}
 	/* get mipi_dsim_config. */
 	dsim_config = dsim_pd->dsim_config;
 	if (dsim_config == NULL) {
 		dev_err(&pdev->dev, "failed to get dsim config data.\n");
-		goto err_clock_get;
+		return -EINVAL;
 	}
 
 	dsim->dsim_config = dsim_config;
@@ -366,41 +367,28 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
 
 	mutex_init(&dsim->lock);
 
-	ret = regulator_bulk_get(&pdev->dev, ARRAY_SIZE(supplies), supplies);
+	ret = devm_regulator_bulk_get(&pdev->dev, ARRAY_SIZE(supplies),
+					supplies);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to get regulators: %d\n", ret);
-		goto err_clock_get;
+		return ret;
 	}
 
-	dsim->clock = clk_get(&pdev->dev, "dsim0");
+	dsim->clock = devm_clk_get(&pdev->dev, "dsim0");
 	if (IS_ERR(dsim->clock)) {
 		dev_err(&pdev->dev, "failed to get dsim clock source\n");
-		ret = -ENODEV;
-		goto err_clock_get;
+		return -ENODEV;
 	}
 
 	clk_enable(dsim->clock);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "failed to get io memory region\n");
-		ret = -ENODEV;
-		goto err_platform_get;
-	}
-
-	dsim->res = request_mem_region(res->start, resource_size(res),
-					dev_name(&pdev->dev));
-	if (!dsim->res) {
-		dev_err(&pdev->dev, "failed to request io memory region\n");
-		ret = -ENOMEM;
-		goto err_mem_region;
-	}
 
-	dsim->reg_base = ioremap(res->start, resource_size(res));
+	dsim->reg_base = devm_request_and_ioremap(&pdev->dev, res);
 	if (!dsim->reg_base) {
 		dev_err(&pdev->dev, "failed to remap io region\n");
 		ret = -ENOMEM;
-		goto err_ioremap;
+		goto error;
 	}
 
 	mutex_init(&dsim->lock);
@@ -410,26 +398,27 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
 	if (!dsim_ddi) {
 		dev_err(&pdev->dev, "mipi_dsim_ddi object not found.\n");
 		ret = -EINVAL;
-		goto err_bind;
+		goto error;
 	}
 
 	dsim->irq = platform_get_irq(pdev, 0);
-	if (dsim->irq < 0) {
+	if (IS_ERR_VALUE(dsim->irq)) {
 		dev_err(&pdev->dev, "failed to request dsim irq resource\n");
 		ret = -EINVAL;
-		goto err_platform_get_irq;
+		goto error;
 	}
 
 	init_completion(&dsim_wr_comp);
 	init_completion(&dsim_rd_comp);
 	platform_set_drvdata(pdev, dsim);
 
-	ret = request_irq(dsim->irq, exynos_mipi_dsi_interrupt_handler,
+	ret = devm_request_irq(&pdev->dev, dsim->irq,
+			exynos_mipi_dsi_interrupt_handler,
 			IRQF_SHARED, dev_name(&pdev->dev), dsim);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "failed to request dsim irq\n");
 		ret = -EINVAL;
-		goto err_bind;
+		goto error;
 	}
 
 	/* enable interrupts */
@@ -471,22 +460,8 @@ done:
 
 	return 0;
 
-err_bind:
-	iounmap(dsim->reg_base);
-
-err_ioremap:
-	release_mem_region(dsim->res->start, resource_size(dsim->res));
-
-err_mem_region:
-	release_resource(dsim->res);
-
-err_platform_get:
+error:
 	clk_disable(dsim->clock);
-	clk_put(dsim->clock);
-err_clock_get:
-	kfree(dsim);
-
-err_platform_get_irq:
 	return ret;
 }
 
@@ -496,13 +471,7 @@ static int exynos_mipi_dsi_remove(struct platform_device *pdev)
 	struct mipi_dsim_ddi *dsim_ddi, *next;
 	struct mipi_dsim_lcd_driver *dsim_lcd_drv;
 
-	iounmap(dsim->reg_base);
-
 	clk_disable(dsim->clock);
-	clk_put(dsim->clock);
-
-	release_resource(dsim->res);
-	release_mem_region(dsim->res->start, resource_size(dsim->res));
 
 	list_for_each_entry_safe(dsim_ddi, next, &dsim_ddi_list, list) {
 		if (dsim_ddi) {
@@ -518,9 +487,6 @@ static int exynos_mipi_dsi_remove(struct platform_device *pdev)
 		}
 	}
 
-	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
-	kfree(dsim);
-
 	return 0;
 }
 

drivers/video/exynos/s6e8ax0.c

@@ -776,7 +776,7 @@ static int s6e8ax0_probe(struct mipi_dsim_lcd_device *dsim_dev)
 	int ret;
 	u8 mtp_id[3] = {0, };
 
-	lcd = kzalloc(sizeof(struct s6e8ax0), GFP_KERNEL);
+	lcd = devm_kzalloc(&dsim_dev->dev, sizeof(struct s6e8ax0), GFP_KERNEL);
 	if (!lcd) {
 		dev_err(&dsim_dev->dev, "failed to allocate s6e8ax0 structure.\n");
 		return -ENOMEM;
@@ -788,18 +788,17 @@ static int s6e8ax0_probe(struct mipi_dsim_lcd_device *dsim_dev)
 
 	mutex_init(&lcd->lock);
 
-	ret = regulator_bulk_get(lcd->dev, ARRAY_SIZE(supplies), supplies);
+	ret = devm_regulator_bulk_get(lcd->dev, ARRAY_SIZE(supplies), supplies);
 	if (ret) {
 		dev_err(lcd->dev, "Failed to get regulators: %d\n", ret);
-		goto err_lcd_register;
+		return ret;
 	}
 
 	lcd->ld = lcd_device_register("s6e8ax0", lcd->dev, lcd,
 			&s6e8ax0_lcd_ops);
 	if (IS_ERR(lcd->ld)) {
 		dev_err(lcd->dev, "failed to register lcd ops.\n");
-		ret = PTR_ERR(lcd->ld);
-		goto err_lcd_register;
+		return PTR_ERR(lcd->ld);
 	}
 
 	lcd->bd = backlight_device_register("s6e8ax0-bl", lcd->dev, lcd,
@@ -838,11 +837,6 @@ static int s6e8ax0_probe(struct mipi_dsim_lcd_device *dsim_dev)
 
 err_backlight_register:
 	lcd_device_unregister(lcd->ld);
-
-err_lcd_register:
-	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
-	kfree(lcd);
-
 	return ret;
 }
 

drivers/video/goldfishfb.c

@@ -0,0 +1,318 @@
+/*
+ * Copyright (C) 2007 Google, Inc.
+ * Copyright (C) 2012 Intel, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/mm.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+
+enum {
+	FB_GET_WIDTH        = 0x00,
+	FB_GET_HEIGHT       = 0x04,
+	FB_INT_STATUS       = 0x08,
+	FB_INT_ENABLE       = 0x0c,
+	FB_SET_BASE         = 0x10,
+	FB_SET_ROTATION     = 0x14,
+	FB_SET_BLANK        = 0x18,
+	FB_GET_PHYS_WIDTH   = 0x1c,
+	FB_GET_PHYS_HEIGHT  = 0x20,
+
+	FB_INT_VSYNC             = 1U << 0,
+	FB_INT_BASE_UPDATE_DONE  = 1U << 1
+};
+
+struct goldfish_fb {
+	void __iomem *reg_base;
+	int irq;
+	spinlock_t lock;
+	wait_queue_head_t wait;
+	int base_update_count;
+	int rotation;
+	struct fb_info fb;
+	u32 cmap[16];
+};
+
+static irqreturn_t goldfish_fb_interrupt(int irq, void *dev_id)
+{
+	unsigned long irq_flags;
+	struct goldfish_fb *fb = dev_id;
+	u32 status;
+
+	spin_lock_irqsave(&fb->lock, irq_flags);
+	status = readl(fb->reg_base + FB_INT_STATUS);
+	if (status & FB_INT_BASE_UPDATE_DONE) {
+		fb->base_update_count++;
+		wake_up(&fb->wait);
+	}
+	spin_unlock_irqrestore(&fb->lock, irq_flags);
+	return status ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static inline u32 convert_bitfield(int val, struct fb_bitfield *bf)
+{
+	unsigned int mask = (1 << bf->length) - 1;
+
+	return (val >> (16 - bf->length) & mask) << bf->offset;
+}
+
+static int
+goldfish_fb_setcolreg(unsigned int regno, unsigned int red, unsigned int green,
+		 unsigned int blue, unsigned int transp, struct fb_info *info)
+{
+	struct goldfish_fb *fb = container_of(info, struct goldfish_fb, fb);
+
+	if (regno < 16) {
+		fb->cmap[regno] = convert_bitfield(transp, &fb->fb.var.transp) |
+				  convert_bitfield(blue, &fb->fb.var.blue) |
+				  convert_bitfield(green, &fb->fb.var.green) |
+				  convert_bitfield(red, &fb->fb.var.red);
+		return 0;
+	} else {
+		return 1;
+	}
+}
+
+static int goldfish_fb_check_var(struct fb_var_screeninfo *var,
+							struct fb_info *info)
+{
+	if ((var->rotate & 1) != (info->var.rotate & 1)) {
+		if ((var->xres != info->var.yres) ||
+				(var->yres != info->var.xres) ||
+				(var->xres_virtual != info->var.yres) ||
+				(var->yres_virtual > info->var.xres * 2) ||
+				(var->yres_virtual < info->var.xres)) {
+			return -EINVAL;
+		}
+	} else {
+		if ((var->xres != info->var.xres) ||
+		   (var->yres != info->var.yres) ||
+		   (var->xres_virtual != info->var.xres) ||
+		   (var->yres_virtual > info->var.yres * 2) ||
+		   (var->yres_virtual < info->var.yres)) {
+			return -EINVAL;
+		}
+	}
+	if ((var->xoffset != info->var.xoffset) ||
+			(var->bits_per_pixel != info->var.bits_per_pixel) ||
+			(var->grayscale != info->var.grayscale)) {
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int goldfish_fb_set_par(struct fb_info *info)
+{
+	struct goldfish_fb *fb = container_of(info, struct goldfish_fb, fb);
+	if (fb->rotation != fb->fb.var.rotate) {
+		info->fix.line_length = info->var.xres * 2;
+		fb->rotation = fb->fb.var.rotate;
+		writel(fb->rotation, fb->reg_base + FB_SET_ROTATION);
+	}
+	return 0;
+}
+
+
+static int goldfish_fb_pan_display(struct fb_var_screeninfo *var,
+							struct fb_info *info)
+{
+	unsigned long irq_flags;
+	int base_update_count;
+	struct goldfish_fb *fb = container_of(info, struct goldfish_fb, fb);
+
+	spin_lock_irqsave(&fb->lock, irq_flags);
+	base_update_count = fb->base_update_count;
+	writel(fb->fb.fix.smem_start + fb->fb.var.xres * 2 * var->yoffset,
+						fb->reg_base + FB_SET_BASE);
+	spin_unlock_irqrestore(&fb->lock, irq_flags);
+	wait_event_timeout(fb->wait,
+			fb->base_update_count != base_update_count, HZ / 15);
+	if (fb->base_update_count == base_update_count)
+		pr_err("goldfish_fb_pan_display: timeout wating for base update\n");
+	return 0;
+}
+
+static int goldfish_fb_blank(int blank, struct fb_info *info)
+{
+	struct goldfish_fb *fb = container_of(info, struct goldfish_fb, fb);
+	switch (blank) {
+	case FB_BLANK_NORMAL:
+		writel(1, fb->reg_base + FB_SET_BLANK);
+		break;
+	case FB_BLANK_UNBLANK:
+		writel(0, fb->reg_base + FB_SET_BLANK);
+		break;
+	}
+	return 0;
+}
+
+static struct fb_ops goldfish_fb_ops = {
+	.owner          = THIS_MODULE,
+	.fb_check_var   = goldfish_fb_check_var,
+	.fb_set_par     = goldfish_fb_set_par,
+	.fb_setcolreg   = goldfish_fb_setcolreg,
+	.fb_pan_display = goldfish_fb_pan_display,
+	.fb_blank	= goldfish_fb_blank,
+	.fb_fillrect    = cfb_fillrect,
+	.fb_copyarea    = cfb_copyarea,
+	.fb_imageblit   = cfb_imageblit,
+};
+
+
+static int goldfish_fb_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct resource *r;
+	struct goldfish_fb *fb;
+	size_t framesize;
+	u32 width, height;
+	dma_addr_t fbpaddr;
+
+	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
+	if (fb == NULL) {
+		ret = -ENOMEM;
+		goto err_fb_alloc_failed;
+	}
+	spin_lock_init(&fb->lock);
+	init_waitqueue_head(&fb->wait);
+	platform_set_drvdata(pdev, fb);
+
+	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (r == NULL) {
+		ret = -ENODEV;
+		goto err_no_io_base;
+	}
+	fb->reg_base = ioremap(r->start, PAGE_SIZE);
+	if (fb->reg_base == NULL) {
+		ret = -ENOMEM;
+		goto err_no_io_base;
+	}
+
+	fb->irq = platform_get_irq(pdev, 0);
+	if (fb->irq <= 0) {
+		ret = -ENODEV;
+		goto err_no_irq;
+	}
+
+	width = readl(fb->reg_base + FB_GET_WIDTH);
+	height = readl(fb->reg_base + FB_GET_HEIGHT);
+
+	fb->fb.fbops		= &goldfish_fb_ops;
+	fb->fb.flags		= FBINFO_FLAG_DEFAULT;
+	fb->fb.pseudo_palette	= fb->cmap;
+	fb->fb.fix.type		= FB_TYPE_PACKED_PIXELS;
+	fb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
+	fb->fb.fix.line_length = width * 2;
+	fb->fb.fix.accel	= FB_ACCEL_NONE;
+	fb->fb.fix.ypanstep = 1;
+
+	fb->fb.var.xres		= width;
+	fb->fb.var.yres		= height;
+	fb->fb.var.xres_virtual	= width;
+	fb->fb.var.yres_virtual	= height * 2;
+	fb->fb.var.bits_per_pixel = 16;
+	fb->fb.var.activate	= FB_ACTIVATE_NOW;
+	fb->fb.var.height	= readl(fb->reg_base + FB_GET_PHYS_HEIGHT);
+	fb->fb.var.width	= readl(fb->reg_base + FB_GET_PHYS_WIDTH);
+	fb->fb.var.pixclock	= 10000;
+
+	fb->fb.var.red.offset = 11;
+	fb->fb.var.red.length = 5;
+	fb->fb.var.green.offset = 5;
+	fb->fb.var.green.length = 6;
+	fb->fb.var.blue.offset = 0;
+	fb->fb.var.blue.length = 5;
+
+	framesize = width * height * 2 * 2;
+	fb->fb.screen_base = (char __force __iomem *)dma_alloc_coherent(
+						&pdev->dev, framesize,
+						&fbpaddr, GFP_KERNEL);
+	pr_debug("allocating frame buffer %d * %d, got %p\n",
+					width, height, fb->fb.screen_base);
+	if (fb->fb.screen_base == NULL) {
+		ret = -ENOMEM;
+		goto err_alloc_screen_base_failed;
+	}
+	fb->fb.fix.smem_start = fbpaddr;
+	fb->fb.fix.smem_len = framesize;
+
+	ret = fb_set_var(&fb->fb, &fb->fb.var);
+	if (ret)
+		goto err_fb_set_var_failed;
+
+	ret = request_irq(fb->irq, goldfish_fb_interrupt, IRQF_SHARED,
+							pdev->name, fb);
+	if (ret)
+		goto err_request_irq_failed;
+
+	writel(FB_INT_BASE_UPDATE_DONE, fb->reg_base + FB_INT_ENABLE);
+	goldfish_fb_pan_display(&fb->fb.var, &fb->fb); /* updates base */
+
+	ret = register_framebuffer(&fb->fb);
+	if (ret)
+		goto err_register_framebuffer_failed;
+	return 0;
+
+err_register_framebuffer_failed:
+	free_irq(fb->irq, fb);
+err_request_irq_failed:
+err_fb_set_var_failed:
+	dma_free_coherent(&pdev->dev, framesize,
+				(void *)fb->fb.screen_base,
+				fb->fb.fix.smem_start);
+err_alloc_screen_base_failed:
+err_no_irq:
+	iounmap(fb->reg_base);
+err_no_io_base:
+	kfree(fb);
+err_fb_alloc_failed:
+	return ret;
+}
+
+static int goldfish_fb_remove(struct platform_device *pdev)
+{
+	size_t framesize;
+	struct goldfish_fb *fb = platform_get_drvdata(pdev);
+
+	framesize = fb->fb.var.xres_virtual * fb->fb.var.yres_virtual * 2;
+	unregister_framebuffer(&fb->fb);
+	free_irq(fb->irq, fb);
+
+	dma_free_coherent(&pdev->dev, framesize, (void *)fb->fb.screen_base,
+						fb->fb.fix.smem_start);
+	iounmap(fb->reg_base);
+	return 0;
+}
+
+
+static struct platform_driver goldfish_fb_driver = {
+	.probe		= goldfish_fb_probe,
+	.remove		= goldfish_fb_remove,
+	.driver = {
+		.name = "goldfish_fb"
+	}
+};
+
+module_platform_driver(goldfish_fb_driver);
+
+MODULE_LICENSE("GPL v2");

drivers/video/mmp/Kconfig

@@ -0,0 +1,11 @@
+menuconfig MMP_DISP
+        tristate "Marvell MMP Display Subsystem support"
+        depends on CPU_PXA910 || CPU_MMP2 || CPU_MMP3 || CPU_PXA988
+        help
+	  Marvell Display Subsystem support.
+
+if MMP_DISP
+source "drivers/video/mmp/hw/Kconfig"
+source "drivers/video/mmp/panel/Kconfig"
+source "drivers/video/mmp/fb/Kconfig"
+endif

drivers/video/mmp/Makefile

@@ -0,0 +1 @@
+obj-y += core.o hw/ panel/ fb/

drivers/video/mmp/core.c

@@ -0,0 +1,258 @@
+/*
+ * linux/drivers/video/mmp/common.c
+ * This driver is a common framework for Marvell Display Controller
+ *
+ * Copyright (C) 2012 Marvell Technology Group Ltd.
+ * Authors: Zhou Zhu <zzhu3@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <linux/slab.h>
+#include <linux/dma-mapping.h>
+#include <linux/export.h>
+#include <video/mmp_disp.h>
+
+static struct mmp_overlay *path_get_overlay(struct mmp_path *path,
+		int overlay_id)
+{
+	if (path && overlay_id < path->overlay_num)
+		return &path->overlays[overlay_id];
+	return 0;
+}
+
+static int path_check_status(struct mmp_path *path)
+{
+	int i;
+	for (i = 0; i < path->overlay_num; i++)
+		if (path->overlays[i].status)
+			return 1;
+
+	return 0;
+}
+
+/*
+ * Get modelist write pointer of modelist.
+ * It also returns modelist number
+ * this function fetches modelist from phy/panel:
+ *   for HDMI/parallel or dsi to hdmi cases, get from phy
+ *   or get from panel
+ */
+static int path_get_modelist(struct mmp_path *path,
+		struct mmp_mode **modelist)
+{
+	BUG_ON(!path || !modelist);
+
+	if (path->panel && path->panel->get_modelist)
+		return path->panel->get_modelist(path->panel, modelist);
+
+	return 0;
+}
+
+/*
+ * panel list is used to pair panel/path when path/panel registered
+ * path list is used for both buffer driver and platdriver
+ * plat driver do path register/unregister
+ * panel driver do panel register/unregister
+ * buffer driver get registered path
+ */
+static LIST_HEAD(panel_list);
+static LIST_HEAD(path_list);
+static DEFINE_MUTEX(disp_lock);
+
+/*
+ * mmp_register_panel - register panel to panel_list and connect to path
+ * @p: panel to be registered
+ *
+ * this function provides interface for panel drivers to register panel
+ * to panel_list and connect to path which matchs panel->plat_path_name.
+ * no error returns when no matching path is found as path register after
+ * panel register is permitted.
+ */
+void mmp_register_panel(struct mmp_panel *panel)
+{
+	struct mmp_path *path;
+
+	mutex_lock(&disp_lock);
+
+	/* add */
+	list_add_tail(&panel->node, &panel_list);
+
+	/* try to register to path */
+	list_for_each_entry(path, &path_list, node) {
+		if (!strcmp(panel->plat_path_name, path->name)) {
+			dev_info(panel->dev, "connect to path %s\n",
+				path->name);
+			path->panel = panel;
+			break;
+		}
+	}
+
+	mutex_unlock(&disp_lock);
+}
+EXPORT_SYMBOL_GPL(mmp_register_panel);
+
+/*
+ * mmp_unregister_panel - unregister panel from panel_list and disconnect
+ * @p: panel to be unregistered
+ *
+ * this function provides interface for panel drivers to unregister panel
+ * from panel_list and disconnect from path.
+ */
+void mmp_unregister_panel(struct mmp_panel *panel)
+{
+	struct mmp_path *path;
+
+	mutex_lock(&disp_lock);
+	list_del(&panel->node);
+
+	list_for_each_entry(path, &path_list, node) {
+		if (path->panel && path->panel == panel) {
+			dev_info(panel->dev, "disconnect from path %s\n",
+				path->name);
+			path->panel = NULL;
+			break;
+		}
+	}
+	mutex_unlock(&disp_lock);
+}
+EXPORT_SYMBOL_GPL(mmp_unregister_panel);
+
+/*
+ * mmp_get_path - get path by name
+ * @p: path name
+ *
+ * this function checks path name in path_list and return matching path
+ * return NULL if no matching path
+ */
+struct mmp_path *mmp_get_path(const char *name)
+{
+	struct mmp_path *path;
+	int found = 0;
+
+	mutex_lock(&disp_lock);
+	list_for_each_entry(path, &path_list, node) {
+		if (!strcmp(name, path->name)) {
+			found = 1;
+			break;
+		}
+	}
+	mutex_unlock(&disp_lock);
+
+	return found ? path : NULL;
+}
+EXPORT_SYMBOL_GPL(mmp_get_path);
+
+/*
+ * mmp_register_path - init and register path by path_info
+ * @p: path info provided by display controller
+ *
+ * this function init by path info and register path to path_list
+ * this function also try to connect path with panel by name
+ */
+struct mmp_path *mmp_register_path(struct mmp_path_info *info)
+{
+	int i;
+	size_t size;
+	struct mmp_path *path = NULL;
+	struct mmp_panel *panel;
+
+	size = sizeof(struct mmp_path)
+		+ sizeof(struct mmp_overlay) * info->overlay_num;
+	path = kzalloc(size, GFP_KERNEL);
+	if (!path)
+		goto failed;
+
+	/* path set */
+	mutex_init(&path->access_ok);
+	path->dev = info->dev;
+	path->id = info->id;
+	path->name = info->name;
+	path->output_type = info->output_type;
+	path->overlay_num = info->overlay_num;
+	path->plat_data = info->plat_data;
+	path->ops.set_mode = info->set_mode;
+
+	mutex_lock(&disp_lock);
+	/* get panel */
+	list_for_each_entry(panel, &panel_list, node) {
+		if (!strcmp(info->name, panel->plat_path_name)) {
+			dev_info(path->dev, "get panel %s\n", panel->name);
+			path->panel = panel;
+			break;
+		}
+	}
+
+	dev_info(path->dev, "register %s, overlay_num %d\n",
+			path->name, path->overlay_num);
+
+	/* default op set: if already set by driver, never cover it */
+	if (!path->ops.check_status)
+		path->ops.check_status = path_check_status;
+	if (!path->ops.get_overlay)
+		path->ops.get_overlay = path_get_overlay;
+	if (!path->ops.get_modelist)
+		path->ops.get_modelist = path_get_modelist;
+
+	/* step3: init overlays */
+	for (i = 0; i < path->overlay_num; i++) {
+		path->overlays[i].path = path;
+		path->overlays[i].id = i;
+		mutex_init(&path->overlays[i].access_ok);
+		path->overlays[i].ops = info->overlay_ops;
+	}
+
+	/* add to pathlist */
+	list_add_tail(&path->node, &path_list);
+
+	mutex_unlock(&disp_lock);
+	return path;
+
+failed:
+	kfree(path);
+	mutex_unlock(&disp_lock);
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(mmp_register_path);
+
+/*
+ * mmp_unregister_path - unregister and destory path
+ * @p: path to be destoried.
+ *
+ * this function registers path and destorys it.
+ */
+void mmp_unregister_path(struct mmp_path *path)
+{
+	int i;
+
+	if (!path)
+		return;
+
+	mutex_lock(&disp_lock);
+	/* del from pathlist */
+	list_del(&path->node);
+
+	/* deinit overlays */
+	for (i = 0; i < path->overlay_num; i++)
+		mutex_destroy(&path->overlays[i].access_ok);
+
+	mutex_destroy(&path->access_ok);
+
+	kfree(path);
+	mutex_unlock(&disp_lock);
+
+	dev_info(path->dev, "de-register %s\n", path->name);
+}
+EXPORT_SYMBOL_GPL(mmp_unregister_path);

drivers/video/mmp/fb/Kconfig

@@ -0,0 +1,13 @@
+if MMP_DISP
+
+config MMP_FB
+	bool "fb driver for Marvell MMP Display Subsystem"
+	depends on FB
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	default y
+	help
+		fb driver for Marvell MMP Display Subsystem
+
+endif

drivers/video/mmp/fb/Makefile

@@ -0,0 +1 @@
+obj-$(CONFIG_MMP_FB)  += mmpfb.o

drivers/video/mmp/fb/mmpfb.c

@@ -0,0 +1,685 @@
+/*
+ * linux/drivers/video/mmp/fb/mmpfb.c
+ * Framebuffer driver for Marvell Display controller.
+ *
+ * Copyright (C) 2012 Marvell Technology Group Ltd.
+ * Authors: Zhou Zhu <zzhu3@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include "mmpfb.h"
+
+static int var_to_pixfmt(struct fb_var_screeninfo *var)
+{
+	/*
+	 * Pseudocolor mode?
+	 */
+	if (var->bits_per_pixel == 8)
+		return PIXFMT_PSEUDOCOLOR;
+
+	/*
+	 * Check for YUV422PLANAR.
+	 */
+	if (var->bits_per_pixel == 16 && var->red.length == 8 &&
+			var->green.length == 4 && var->blue.length == 4) {
+		if (var->green.offset >= var->blue.offset)
+			return PIXFMT_YUV422P;
+		else
+			return PIXFMT_YVU422P;
+	}
+
+	/*
+	 * Check for YUV420PLANAR.
+	 */
+	if (var->bits_per_pixel == 12 && var->red.length == 8 &&
+			var->green.length == 2 && var->blue.length == 2) {
+		if (var->green.offset >= var->blue.offset)
+			return PIXFMT_YUV420P;
+		else
+			return PIXFMT_YVU420P;
+	}
+
+	/*
+	 * Check for YUV422PACK.
+	 */
+	if (var->bits_per_pixel == 16 && var->red.length == 16 &&
+			var->green.length == 16 && var->blue.length == 16) {
+		if (var->red.offset == 0)
+			return PIXFMT_YUYV;
+		else if (var->green.offset >= var->blue.offset)
+			return PIXFMT_UYVY;
+		else
+			return PIXFMT_VYUY;
+	}
+
+	/*
+	 * Check for 565/1555.
+	 */
+	if (var->bits_per_pixel == 16 && var->red.length <= 5 &&
+			var->green.length <= 6 && var->blue.length <= 5) {
+		if (var->transp.length == 0) {
+			if (var->red.offset >= var->blue.offset)
+				return PIXFMT_RGB565;
+			else
+				return PIXFMT_BGR565;
+		}
+	}
+
+	/*
+	 * Check for 888/A888.
+	 */
+	if (var->bits_per_pixel <= 32 && var->red.length <= 8 &&
+			var->green.length <= 8 && var->blue.length <= 8) {
+		if (var->bits_per_pixel == 24 && var->transp.length == 0) {
+			if (var->red.offset >= var->blue.offset)
+				return PIXFMT_RGB888PACK;
+			else
+				return PIXFMT_BGR888PACK;
+		}
+
+		if (var->bits_per_pixel == 32 && var->transp.offset == 24) {
+			if (var->red.offset >= var->blue.offset)
+				return PIXFMT_RGBA888;
+			else
+				return PIXFMT_BGRA888;
+		} else {
+			if (var->red.offset >= var->blue.offset)
+				return PIXFMT_RGB888UNPACK;
+			else
+				return PIXFMT_BGR888UNPACK;
+		}
+
+		/* fall through */
+	}
+
+	return -EINVAL;
+}
+
+static void pixfmt_to_var(struct fb_var_screeninfo *var, int pix_fmt)
+{
+	switch (pix_fmt) {
+	case PIXFMT_RGB565:
+		var->bits_per_pixel = 16;
+		var->red.offset = 11;	var->red.length = 5;
+		var->green.offset = 5;   var->green.length = 6;
+		var->blue.offset = 0;	var->blue.length = 5;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_BGR565:
+		var->bits_per_pixel = 16;
+		var->red.offset = 0;	var->red.length = 5;
+		var->green.offset = 5;	 var->green.length = 6;
+		var->blue.offset = 11;	var->blue.length = 5;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_RGB888UNPACK:
+		var->bits_per_pixel = 32;
+		var->red.offset = 16;	var->red.length = 8;
+		var->green.offset = 8;   var->green.length = 8;
+		var->blue.offset = 0;	var->blue.length = 8;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_BGR888UNPACK:
+		var->bits_per_pixel = 32;
+		var->red.offset = 0;	var->red.length = 8;
+		var->green.offset = 8;	 var->green.length = 8;
+		var->blue.offset = 16;	var->blue.length = 8;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_RGBA888:
+		var->bits_per_pixel = 32;
+		var->red.offset = 16;	var->red.length = 8;
+		var->green.offset = 8;   var->green.length = 8;
+		var->blue.offset = 0;	var->blue.length = 8;
+		var->transp.offset = 24; var->transp.length = 8;
+		break;
+	case PIXFMT_BGRA888:
+		var->bits_per_pixel = 32;
+		var->red.offset = 0;	var->red.length = 8;
+		var->green.offset = 8;	 var->green.length = 8;
+		var->blue.offset = 16;	var->blue.length = 8;
+		var->transp.offset = 24; var->transp.length = 8;
+		break;
+	case PIXFMT_RGB888PACK:
+		var->bits_per_pixel = 24;
+		var->red.offset = 16;	var->red.length = 8;
+		var->green.offset = 8;   var->green.length = 8;
+		var->blue.offset = 0;	var->blue.length = 8;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_BGR888PACK:
+		var->bits_per_pixel = 24;
+		var->red.offset = 0;	var->red.length = 8;
+		var->green.offset = 8;	 var->green.length = 8;
+		var->blue.offset = 16;	var->blue.length = 8;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_YUV420P:
+		var->bits_per_pixel = 12;
+		var->red.offset = 4;	 var->red.length = 8;
+		var->green.offset = 2;   var->green.length = 2;
+		var->blue.offset = 0;   var->blue.length = 2;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_YVU420P:
+		var->bits_per_pixel = 12;
+		var->red.offset = 4;	 var->red.length = 8;
+		var->green.offset = 0;	 var->green.length = 2;
+		var->blue.offset = 2;	var->blue.length = 2;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_YUV422P:
+		var->bits_per_pixel = 16;
+		var->red.offset = 8;	 var->red.length = 8;
+		var->green.offset = 4;   var->green.length = 4;
+		var->blue.offset = 0;   var->blue.length = 4;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_YVU422P:
+		var->bits_per_pixel = 16;
+		var->red.offset = 8;	 var->red.length = 8;
+		var->green.offset = 0;	 var->green.length = 4;
+		var->blue.offset = 4;	var->blue.length = 4;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_UYVY:
+		var->bits_per_pixel = 16;
+		var->red.offset = 8;	 var->red.length = 16;
+		var->green.offset = 4;   var->green.length = 16;
+		var->blue.offset = 0;   var->blue.length = 16;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_VYUY:
+		var->bits_per_pixel = 16;
+		var->red.offset = 8;	 var->red.length = 16;
+		var->green.offset = 0;	 var->green.length = 16;
+		var->blue.offset = 4;	var->blue.length = 16;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_YUYV:
+		var->bits_per_pixel = 16;
+		var->red.offset = 0;	 var->red.length = 16;
+		var->green.offset = 4;	 var->green.length = 16;
+		var->blue.offset = 8;	var->blue.length = 16;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	case PIXFMT_PSEUDOCOLOR:
+		var->bits_per_pixel = 8;
+		var->red.offset = 0;	 var->red.length = 8;
+		var->green.offset = 0;   var->green.length = 8;
+		var->blue.offset = 0;	var->blue.length = 8;
+		var->transp.offset = 0;  var->transp.length = 0;
+		break;
+	}
+}
+
+/*
+ * fb framework has its limitation:
+ * 1. input color/output color is not seprated
+ * 2. fb_videomode not include output color
+ * so for fb usage, we keep a output format which is not changed
+ *  then it's added for mmpmode
+ */
+static void fbmode_to_mmpmode(struct mmp_mode *mode,
+		struct fb_videomode *videomode, int output_fmt)
+{
+	u64 div_result = 1000000000000ll;
+	mode->name = videomode->name;
+	mode->refresh = videomode->refresh;
+	mode->xres = videomode->xres;
+	mode->yres = videomode->yres;
+
+	do_div(div_result, videomode->pixclock);
+	mode->pixclock_freq = (u32)div_result;
+
+	mode->left_margin = videomode->left_margin;
+	mode->right_margin = videomode->right_margin;
+	mode->upper_margin = videomode->upper_margin;
+	mode->lower_margin = videomode->lower_margin;
+	mode->hsync_len = videomode->hsync_len;
+	mode->vsync_len = videomode->vsync_len;
+	mode->hsync_invert = !!(videomode->sync & FB_SYNC_HOR_HIGH_ACT);
+	mode->vsync_invert = !!(videomode->sync & FB_SYNC_VERT_HIGH_ACT);
+	/* no defined flag in fb, use vmode>>3*/
+	mode->invert_pixclock = !!(videomode->vmode & 8);
+	mode->pix_fmt_out = output_fmt;
+}
+
+static void mmpmode_to_fbmode(struct fb_videomode *videomode,
+		struct mmp_mode *mode)
+{
+	u64 div_result = 1000000000000ll;
+
+	videomode->name = mode->name;
+	videomode->refresh = mode->refresh;
+	videomode->xres = mode->xres;
+	videomode->yres = mode->yres;
+
+	do_div(div_result, mode->pixclock_freq);
+	videomode->pixclock = (u32)div_result;
+
+	videomode->left_margin = mode->left_margin;
+	videomode->right_margin = mode->right_margin;
+	videomode->upper_margin = mode->upper_margin;
+	videomode->lower_margin = mode->lower_margin;
+	videomode->hsync_len = mode->hsync_len;
+	videomode->vsync_len = mode->vsync_len;
+	videomode->sync = (mode->hsync_invert ? FB_SYNC_HOR_HIGH_ACT : 0)
+		| (mode->vsync_invert ? FB_SYNC_VERT_HIGH_ACT : 0);
+	videomode->vmode = mode->invert_pixclock ? 8 : 0;
+}
+
+static int mmpfb_check_var(struct fb_var_screeninfo *var,
+		struct fb_info *info)
+{
+	struct mmpfb_info *fbi = info->par;
+
+	if (var->bits_per_pixel == 8)
+		return -EINVAL;
+	/*
+	 * Basic geometry sanity checks.
+	 */
+	if (var->xoffset + var->xres > var->xres_virtual)
+		return -EINVAL;
+	if (var->yoffset + var->yres > var->yres_virtual)
+		return -EINVAL;
+
+	/*
+	 * Check size of framebuffer.
+	 */
+	if (var->xres_virtual * var->yres_virtual *
+			(var->bits_per_pixel >> 3) > fbi->fb_size)
+		return -EINVAL;
+
+	return 0;
+}
+
+static unsigned int chan_to_field(unsigned int chan, struct fb_bitfield *bf)
+{
+	return ((chan & 0xffff) >> (16 - bf->length)) << bf->offset;
+}
+
+static u32 to_rgb(u16 red, u16 green, u16 blue)
+{
+	red >>= 8;
+	green >>= 8;
+	blue >>= 8;
+
+	return (red << 16) | (green << 8) | blue;
+}
+
+static int mmpfb_setcolreg(unsigned int regno, unsigned int red,
+		unsigned int green, unsigned int blue,
+		unsigned int trans, struct fb_info *info)
+{
+	struct mmpfb_info *fbi = info->par;
+	u32 val;
+
+	if (info->fix.visual == FB_VISUAL_TRUECOLOR && regno < 16) {
+		val =  chan_to_field(red,   &info->var.red);
+		val |= chan_to_field(green, &info->var.green);
+		val |= chan_to_field(blue , &info->var.blue);
+		fbi->pseudo_palette[regno] = val;
+	}
+
+	if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR && regno < 256) {
+		val = to_rgb(red, green, blue);
+		/* TODO */
+	}
+
+	return 0;
+}
+
+static int mmpfb_pan_display(struct fb_var_screeninfo *var,
+		struct fb_info *info)
+{
+	struct mmpfb_info *fbi = info->par;
+	struct mmp_addr addr;
+
+	memset(&addr, 0, sizeof(addr));
+	addr.phys[0] = (var->yoffset * var->xres_virtual + var->xoffset)
+		* var->bits_per_pixel / 8 + fbi->fb_start_dma;
+	mmp_overlay_set_addr(fbi->overlay, &addr);
+
+	return 0;
+}
+
+static int var_update(struct fb_info *info)
+{
+	struct mmpfb_info *fbi = info->par;
+	struct fb_var_screeninfo *var = &info->var;
+	struct fb_videomode *m;
+	int pix_fmt;
+
+	/* set pix_fmt */
+	pix_fmt = var_to_pixfmt(var);
+	if (pix_fmt < 0)
+		return -EINVAL;
+	pixfmt_to_var(var, pix_fmt);
+	fbi->pix_fmt = pix_fmt;
+
+	/* set var according to best video mode*/
+	m = (struct fb_videomode *)fb_match_mode(var, &info->modelist);
+	if (!m) {
+		dev_err(fbi->dev, "set par: no match mode, use best mode\n");
+		m = (struct fb_videomode *)fb_find_best_mode(var,
+				&info->modelist);
+		fb_videomode_to_var(var, m);
+	}
+	memcpy(&fbi->mode, m, sizeof(struct fb_videomode));
+
+	/* fix to 2* yres */
+	var->yres_virtual = var->yres * 2;
+	info->fix.visual = (pix_fmt == PIXFMT_PSEUDOCOLOR) ?
+		FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
+	info->fix.line_length = var->xres_virtual * var->bits_per_pixel / 8;
+	info->fix.ypanstep = var->yres;
+	return 0;
+}
+
+static int mmpfb_set_par(struct fb_info *info)
+{
+	struct mmpfb_info *fbi = info->par;
+	struct fb_var_screeninfo *var = &info->var;
+	struct mmp_addr addr;
+	struct mmp_win win;
+	struct mmp_mode mode;
+	int ret;
+
+	ret = var_update(info);
+	if (ret != 0)
+		return ret;
+
+	/* set window/path according to new videomode */
+	fbmode_to_mmpmode(&mode, &fbi->mode, fbi->output_fmt);
+	mmp_path_set_mode(fbi->path, &mode);
+
+	memset(&win, 0, sizeof(win));
+	win.xsrc = win.xdst = fbi->mode.xres;
+	win.ysrc = win.ydst = fbi->mode.yres;
+	win.pix_fmt = fbi->pix_fmt;
+	mmp_overlay_set_win(fbi->overlay, &win);
+
+	/* set address always */
+	memset(&addr, 0, sizeof(addr));
+	addr.phys[0] = (var->yoffset * var->xres_virtual + var->xoffset)
+		* var->bits_per_pixel / 8 + fbi->fb_start_dma;
+	mmp_overlay_set_addr(fbi->overlay, &addr);
+
+	return 0;
+}
+
+static void mmpfb_power(struct mmpfb_info *fbi, int power)
+{
+	struct mmp_addr addr;
+	struct mmp_win win;
+	struct fb_var_screeninfo *var = &fbi->fb_info->var;
+
+	/* for power on, always set address/window again */
+	if (power) {
+		memset(&win, 0, sizeof(win));
+		win.xsrc = win.xdst = fbi->mode.xres;
+		win.ysrc = win.ydst = fbi->mode.yres;
+		win.pix_fmt = fbi->pix_fmt;
+		mmp_overlay_set_win(fbi->overlay, &win);
+
+		/* set address always */
+		memset(&addr, 0, sizeof(addr));
+		addr.phys[0] = fbi->fb_start_dma +
+			(var->yoffset * var->xres_virtual + var->xoffset)
+			* var->bits_per_pixel / 8;
+		mmp_overlay_set_addr(fbi->overlay, &addr);
+	}
+	mmp_overlay_set_onoff(fbi->overlay, power);
+}
+
+static int mmpfb_blank(int blank, struct fb_info *info)
+{
+	struct mmpfb_info *fbi = info->par;
+
+	mmpfb_power(fbi, (blank == FB_BLANK_UNBLANK));
+
+	return 0;
+}
+
+static struct fb_ops mmpfb_ops = {
+	.owner		= THIS_MODULE,
+	.fb_blank	= mmpfb_blank,
+	.fb_check_var	= mmpfb_check_var,
+	.fb_set_par	= mmpfb_set_par,
+	.fb_setcolreg	= mmpfb_setcolreg,
+	.fb_pan_display	= mmpfb_pan_display,
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+	.fb_imageblit	= cfb_imageblit,
+};
+
+static int modes_setup(struct mmpfb_info *fbi)
+{
+	struct fb_videomode *videomodes;
+	struct mmp_mode *mmp_modes;
+	struct fb_info *info = fbi->fb_info;
+	int videomode_num, i;
+
+	/* get videomodes from path */
+	videomode_num = mmp_path_get_modelist(fbi->path, &mmp_modes);
+	if (!videomode_num) {
+		dev_warn(fbi->dev, "can't get videomode num\n");
+		return 0;
+	}
+	/* put videomode list to info structure */
+	videomodes = kzalloc(sizeof(struct fb_videomode) * videomode_num,
+			GFP_KERNEL);
+	if (!videomodes) {
+		dev_err(fbi->dev, "can't malloc video modes\n");
+		return -ENOMEM;
+	}
+	for (i = 0; i < videomode_num; i++)
+		mmpmode_to_fbmode(&videomodes[i], &mmp_modes[i]);
+	fb_videomode_to_modelist(videomodes, videomode_num, &info->modelist);
+
+	/* set videomode[0] as default mode */
+	memcpy(&fbi->mode, &videomodes[0], sizeof(struct fb_videomode));
+	fbi->output_fmt = mmp_modes[0].pix_fmt_out;
+	fb_videomode_to_var(&info->var, &fbi->mode);
+	mmp_path_set_mode(fbi->path, &mmp_modes[0]);
+
+	kfree(videomodes);
+	return videomode_num;
+}
+
+static int fb_info_setup(struct fb_info *info,
+			struct mmpfb_info *fbi)
+{
+	int ret = 0;
+	/* Initialise static fb parameters.*/
+	info->flags = FBINFO_DEFAULT | FBINFO_PARTIAL_PAN_OK |
+		FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;
+	info->node = -1;
+	strcpy(info->fix.id, fbi->name);
+	info->fix.type = FB_TYPE_PACKED_PIXELS;
+	info->fix.type_aux = 0;
+	info->fix.xpanstep = 0;
+	info->fix.ypanstep = info->var.yres;
+	info->fix.ywrapstep = 0;
+	info->fix.accel = FB_ACCEL_NONE;
+	info->fix.smem_start = fbi->fb_start_dma;
+	info->fix.smem_len = fbi->fb_size;
+	info->fix.visual = (fbi->pix_fmt == PIXFMT_PSEUDOCOLOR) ?
+		FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
+	info->fix.line_length = info->var.xres_virtual *
+		info->var.bits_per_pixel / 8;
+	info->fbops = &mmpfb_ops;
+	info->pseudo_palette = fbi->pseudo_palette;
+	info->screen_base = fbi->fb_start;
+	info->screen_size = fbi->fb_size;
+
+	/* For FB framework: Allocate color map and Register framebuffer*/
+	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
+		ret = -ENOMEM;
+
+	return ret;
+}
+
+static void fb_info_clear(struct fb_info *info)
+{
+	fb_dealloc_cmap(&info->cmap);
+}
+
+static int mmpfb_probe(struct platform_device *pdev)
+{
+	struct mmp_buffer_driver_mach_info *mi;
+	struct fb_info *info = 0;
+	struct mmpfb_info *fbi = 0;
+	int ret, modes_num;
+
+	mi = pdev->dev.platform_data;
+	if (mi == NULL) {
+		dev_err(&pdev->dev, "no platform data defined\n");
+		return -EINVAL;
+	}
+
+	/* initialize fb */
+	info = framebuffer_alloc(sizeof(struct mmpfb_info), &pdev->dev);
+	if (info == NULL)
+		return -ENOMEM;
+	fbi = info->par;
+	if (!fbi) {
+		ret = -EINVAL;
+		goto failed;
+	}
+
+	/* init fb */
+	fbi->fb_info = info;
+	platform_set_drvdata(pdev, fbi);
+	fbi->dev = &pdev->dev;
+	fbi->name = mi->name;
+	fbi->pix_fmt = mi->default_pixfmt;
+	pixfmt_to_var(&info->var, fbi->pix_fmt);
+	mutex_init(&fbi->access_ok);
+
+	/* get display path by name */
+	fbi->path = mmp_get_path(mi->path_name);
+	if (!fbi->path) {
+		dev_err(&pdev->dev, "can't get the path %s\n", mi->path_name);
+		ret = -EINVAL;
+		goto failed_destroy_mutex;
+	}
+
+	dev_info(fbi->dev, "path %s get\n", fbi->path->name);
+
+	/* get overlay */
+	fbi->overlay = mmp_path_get_overlay(fbi->path, mi->overlay_id);
+	if (!fbi->overlay) {
+		ret = -EINVAL;
+		goto failed_destroy_mutex;
+	}
+	/* set fetch used */
+	mmp_overlay_set_fetch(fbi->overlay, mi->dmafetch_id);
+
+	modes_num = modes_setup(fbi);
+	if (modes_num < 0) {
+		ret = modes_num;
+		goto failed_destroy_mutex;
+	}
+
+	/*
+	 * if get modes success, means not hotplug panels, use caculated buffer
+	 * or use default size
+	 */
+	if (modes_num > 0) {
+		/* fix to 2* yres */
+		info->var.yres_virtual = info->var.yres * 2;
+
+		/* Allocate framebuffer memory: size = modes xy *4 */
+		fbi->fb_size = info->var.xres_virtual * info->var.yres_virtual
+				* info->var.bits_per_pixel / 8;
+	} else {
+		fbi->fb_size = MMPFB_DEFAULT_SIZE;
+	}
+
+	fbi->fb_start = dma_alloc_coherent(&pdev->dev, PAGE_ALIGN(fbi->fb_size),
+				&fbi->fb_start_dma, GFP_KERNEL);
+	if (fbi->fb_start == NULL) {
+		dev_err(&pdev->dev, "can't alloc framebuffer\n");
+		ret = -ENOMEM;
+		goto failed_destroy_mutex;
+	}
+	memset(fbi->fb_start, 0, fbi->fb_size);
+	dev_info(fbi->dev, "fb %dk allocated\n", fbi->fb_size/1024);
+
+	/* fb power on */
+	if (modes_num > 0)
+		mmpfb_power(fbi, 1);
+
+	ret = fb_info_setup(info, fbi);
+	if (ret < 0)
+		goto failed_free_buff;
+
+	ret = register_framebuffer(info);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to register fb: %d\n", ret);
+		ret = -ENXIO;
+		goto failed_clear_info;
+	}
+
+	dev_info(fbi->dev, "loaded to /dev/fb%d <%s>.\n",
+		info->node, info->fix.id);
+
+#ifdef CONFIG_LOGO
+	if (fbi->fb_start) {
+		fb_prepare_logo(info, 0);
+		fb_show_logo(info, 0);
+	}
+#endif
+
+	return 0;
+
+failed_clear_info:
+	fb_info_clear(info);
+failed_free_buff:
+	dma_free_coherent(&pdev->dev, PAGE_ALIGN(fbi->fb_size), fbi->fb_start,
+		fbi->fb_start_dma);
+failed_destroy_mutex:
+	mutex_destroy(&fbi->access_ok);
+failed:
+	dev_err(fbi->dev, "mmp-fb: frame buffer device init failed\n");
+	platform_set_drvdata(pdev, NULL);
+
+	framebuffer_release(info);
+
+	return ret;
+}
+
+static struct platform_driver mmpfb_driver = {
+	.driver		= {
+		.name	= "mmp-fb",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= mmpfb_probe,
+};
+
+static int mmpfb_init(void)
+{
+	return platform_driver_register(&mmpfb_driver);
+}
+module_init(mmpfb_init);
+
+MODULE_AUTHOR("Zhou Zhu <zhou.zhu@marvell.com>");
+MODULE_DESCRIPTION("Framebuffer driver for Marvell displays");
+MODULE_LICENSE("GPL");

drivers/video/mmp/fb/mmpfb.h

@@ -0,0 +1,54 @@
+/*
+ * linux/drivers/video/mmp/fb/mmpfb.h
+ * Framebuffer driver for Marvell Display controller.
+ *
+ * Copyright (C) 2012 Marvell Technology Group Ltd.
+ * Authors: Zhou Zhu <zzhu3@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef _MMP_FB_H_
+#define _MMP_FB_H_
+
+#include <video/mmp_disp.h>
+#include <linux/fb.h>
+
+/* LCD controller private state. */
+struct mmpfb_info {
+	struct device	*dev;
+	int	id;
+	const char	*name;
+
+	struct fb_info	*fb_info;
+	/* basicaly videomode is for output */
+	struct fb_videomode	mode;
+	int	pix_fmt;
+
+	void	*fb_start;
+	int	fb_size;
+	dma_addr_t	fb_start_dma;
+
+	struct mmp_overlay	*overlay;
+	struct mmp_path	*path;
+
+	struct mutex	access_ok;
+
+	unsigned int		pseudo_palette[16];
+	int output_fmt;
+};
+
+#define MMPFB_DEFAULT_SIZE (PAGE_ALIGN(1920 * 1080 * 4 * 2))
+#endif /* _MMP_FB_H_ */

drivers/video/mmp/hw/Kconfig

@@ -0,0 +1,20 @@
+if MMP_DISP
+
+config MMP_DISP_CONTROLLER
+	bool "mmp display controller hw support"
+	depends on CPU_PXA910 || CPU_MMP2 || CPU_MMP3 || CPU_PXA988
+	default n
+	help
+		Marvell MMP display hw controller support
+		this controller is used on Marvell PXA910,
+		MMP2, MMP3, PXA988 chips
+
+config MMP_DISP_SPI
+	bool "mmp display controller spi port"
+	depends on MMP_DISP_CONTROLLER && SPI_MASTER
+	default y
+	help
+		Marvell MMP display hw controller spi port support
+		will register as a spi master for panel usage
+
+endif

drivers/video/mmp/hw/Makefile

@@ -0,0 +1,2 @@
+obj-$(CONFIG_MMP_DISP_CONTROLLER)  += mmp_ctrl.o
+obj-$(CONFIG_MMP_DISP_SPI)	   += mmp_spi.o