linux_kernel/arch/arm/mach-omap2/pdata-quirks.c

/*
 * Legacy platform_data quirks
 *
 * Copyright (C) 2013 Texas Instruments
 *
 * 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/clk.h>
#include <linux/davinci_emac.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/of_platform.h>
#include <linux/ti_wilink_st.h>
#include <linux/wl12xx.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>

#include <linux/platform_data/pinctrl-single.h>
#include <linux/platform_data/iommu-omap.h>
#include <linux/platform_data/wkup_m3.h>

#include <asm/siginfo.h>
#include <asm/signal.h>

#include "common.h"
#include "common-board-devices.h"
#include "dss-common.h"
#include "control.h"
#include "omap_device.h"
#include "omap-secure.h"
#include "soc.h"
#include "hsmmc.h"

struct pdata_init {
	const char *compatible;
	void (*fn)(void);
};

static struct of_dev_auxdata omap_auxdata_lookup[];
static struct twl4030_gpio_platform_data twl_gpio_auxdata;

#ifdef CONFIG_MACH_NOKIA_N8X0
static void __init omap2420_n8x0_legacy_init(void)
{
	omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
}
#else
#define omap2420_n8x0_legacy_init	NULL
#endif

#ifdef CONFIG_ARCH_OMAP3
/*
 * Configures GPIOs 126, 127 and 129 to 1.8V mode instead of 3.0V
 * mode for MMC1 in case bootloader did not configure things.
 * Note that if the pins are used for MMC1, pbias-regulator
 * manages the IO voltage.
 */
static void __init omap3_gpio126_127_129(void)
{
	u32 reg;

	reg = omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
	reg &= ~OMAP343X_PBIASLITEVMODE1;
	reg |= OMAP343X_PBIASLITEPWRDNZ1;
	omap_ctrl_writel(reg, OMAP343X_CONTROL_PBIAS_LITE);
	if (cpu_is_omap3630()) {
		reg = omap_ctrl_readl(OMAP34XX_CONTROL_WKUP_CTRL);
		reg |= OMAP36XX_GPIO_IO_PWRDNZ;
		omap_ctrl_writel(reg, OMAP34XX_CONTROL_WKUP_CTRL);
	}
}

static void __init hsmmc2_internal_input_clk(void)
{
	u32 reg;

	reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
	reg |= OMAP2_MMCSDIO2ADPCLKISEL;
	omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
}

static struct iommu_platform_data omap3_iommu_pdata = {
	.reset_name = "mmu",
	.assert_reset = omap_device_assert_hardreset,
	.deassert_reset = omap_device_deassert_hardreset,
};

static int omap3_sbc_t3730_twl_callback(struct device *dev,
					   unsigned gpio,
					   unsigned ngpio)
{
	int res;

	res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
			       "wlan pwr");
	if (res)
		return res;

	gpio_export(gpio, 0);

	return 0;
}

static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name)
{
	int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name);

	if (err) {
		pr_err("SBC-T3x: %s reset gpio request failed: %d\n",
			hub_name, err);
		return;
	}

	gpio_export(gpio, 0);

	udelay(10);
	gpio_set_value(gpio, 1);
	msleep(1);
}

static void __init omap3_sbc_t3730_twl_init(void)
{
	twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
}

static void __init omap3_sbc_t3730_legacy_init(void)
{
	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
}

static void __init omap3_sbc_t3530_legacy_init(void)
{
	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
}

static struct ti_st_plat_data wilink_pdata = {
	.nshutdown_gpio = 137,
	.dev_name = "/dev/ttyO1",
	.flow_cntrl = 1,
	.baud_rate = 300000,
};

static struct platform_device wl18xx_device = {
	.name	= "kim",
	.id	= -1,
	.dev	= {
		.platform_data = &wilink_pdata,
	}
};

static struct platform_device btwilink_device = {
	.name	= "btwilink",
	.id	= -1,
};

static void __init omap3_igep0020_rev_f_legacy_init(void)
{
	platform_device_register(&wl18xx_device);
	platform_device_register(&btwilink_device);
}

static void __init omap3_igep0030_rev_g_legacy_init(void)
{
	platform_device_register(&wl18xx_device);
	platform_device_register(&btwilink_device);
}

static void __init omap3_evm_legacy_init(void)
{
	hsmmc2_internal_input_clk();
}

static void am35xx_enable_emac_int(void)
{
	u32 v;

	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
	      AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
}

static void am35xx_disable_emac_int(void)
{
	u32 v;

	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
}

static struct emac_platform_data am35xx_emac_pdata = {
	.interrupt_enable	= am35xx_enable_emac_int,
	.interrupt_disable	= am35xx_disable_emac_int,
};

static void __init am35xx_emac_reset(void)
{
	u32 v;

	v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
	v &= ~AM35XX_CPGMACSS_SW_RST;
	omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
	omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
}

static struct gpio cm_t3517_wlan_gpios[] __initdata = {
	{ 56,	GPIOF_OUT_INIT_HIGH,	"wlan pwr" },
	{ 4,	GPIOF_OUT_INIT_HIGH,	"xcvr noe" },
};

static void __init omap3_sbc_t3517_wifi_init(void)
{
	int err = gpio_request_array(cm_t3517_wlan_gpios,
				ARRAY_SIZE(cm_t3517_wlan_gpios));
	if (err) {
		pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
		return;
	}

	gpio_export(cm_t3517_wlan_gpios[0].gpio, 0);
	gpio_export(cm_t3517_wlan_gpios[1].gpio, 0);

	msleep(100);
	gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
}

static void __init omap3_sbc_t3517_legacy_init(void)
{
	omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub");
	omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub");
	am35xx_emac_reset();
	hsmmc2_internal_input_clk();
	omap3_sbc_t3517_wifi_init();
}

static void __init am3517_evm_legacy_init(void)
{
	am35xx_emac_reset();
}

static struct platform_device omap3_rom_rng_device = {
	.name		= "omap3-rom-rng",
	.id		= -1,
	.dev	= {
		.platform_data	= rx51_secure_rng_call,
	},
};

static void __init nokia_n900_legacy_init(void)
{
	hsmmc2_internal_input_clk();

	if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
		if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
			pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
			/* set IBE to 1 */
			rx51_secure_update_aux_cr(BIT(6), 0);
		} else {
			pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n");
			pr_warn("Thumb binaries may crash randomly without this workaround\n");
		}

		pr_info("RX-51: Registring OMAP3 HWRNG device\n");
		platform_device_register(&omap3_rom_rng_device);

	}
}

static void __init omap3_tao3530_legacy_init(void)
{
	hsmmc2_internal_input_clk();
}

/* omap3pandora legacy devices */
#define PANDORA_WIFI_IRQ_GPIO		21
#define PANDORA_WIFI_NRESET_GPIO	23

static struct platform_device pandora_backlight = {
	.name	= "pandora-backlight",
	.id	= -1,
};

static struct regulator_consumer_supply pandora_vmmc3_supply[] = {
	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.2"),
};

static struct regulator_init_data pandora_vmmc3 = {
	.constraints = {
		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= ARRAY_SIZE(pandora_vmmc3_supply),
	.consumer_supplies	= pandora_vmmc3_supply,
};

static struct fixed_voltage_config pandora_vwlan = {
	.supply_name		= "vwlan",
	.microvolts		= 1800000, /* 1.8V */
	.gpio			= PANDORA_WIFI_NRESET_GPIO,
	.startup_delay		= 50000, /* 50ms */
	.enable_high		= 1,
	.init_data		= &pandora_vmmc3,
};

static struct platform_device pandora_vwlan_device = {
	.name		= "reg-fixed-voltage",
	.id		= 1,
	.dev = {
		.platform_data = &pandora_vwlan,
	},
};

static void pandora_wl1251_init_card(struct mmc_card *card)
{
	/*
	 * We have TI wl1251 attached to MMC3. Pass this information to
	 * SDIO core because it can't be probed by normal methods.
	 */
	if (card->type == MMC_TYPE_SDIO || card->type == MMC_TYPE_SD_COMBO) {
		card->quirks |= MMC_QUIRK_NONSTD_SDIO;
		card->cccr.wide_bus = 1;
		card->cis.vendor = 0x104c;
		card->cis.device = 0x9066;
		card->cis.blksize = 512;
		card->cis.max_dtr = 24000000;
		card->ocr = 0x80;
	}
}

static struct omap2_hsmmc_info pandora_mmc3[] = {
	{
		.mmc		= 3,
		.caps		= MMC_CAP_4_BIT_DATA | MMC_CAP_POWER_OFF_CARD,
		.gpio_cd	= -EINVAL,
		.gpio_wp	= -EINVAL,
		.init_card	= pandora_wl1251_init_card,
	},
	{}	/* Terminator */
};

static void __init pandora_wl1251_init(void)
{
	struct wl1251_platform_data pandora_wl1251_pdata;
	int ret;

	memset(&pandora_wl1251_pdata, 0, sizeof(pandora_wl1251_pdata));

	pandora_wl1251_pdata.power_gpio = -1;

	ret = gpio_request_one(PANDORA_WIFI_IRQ_GPIO, GPIOF_IN, "wl1251 irq");
	if (ret < 0)
		goto fail;

	pandora_wl1251_pdata.irq = gpio_to_irq(PANDORA_WIFI_IRQ_GPIO);
	if (pandora_wl1251_pdata.irq < 0)
		goto fail_irq;

	pandora_wl1251_pdata.use_eeprom = true;
	ret = wl1251_set_platform_data(&pandora_wl1251_pdata);
	if (ret < 0)
		goto fail_irq;

	return;

fail_irq:
	gpio_free(PANDORA_WIFI_IRQ_GPIO);
fail:
	pr_err("wl1251 board initialisation failed\n");
}

static void __init omap3_pandora_legacy_init(void)
{
	platform_device_register(&pandora_backlight);
	platform_device_register(&pandora_vwlan_device);
	omap_hsmmc_init(pandora_mmc3);
	omap_hsmmc_late_init(pandora_mmc3);
	pandora_wl1251_init();
}
#endif /* CONFIG_ARCH_OMAP3 */

#ifdef CONFIG_SOC_TI81XX
static int fault_fixed_up;

static int t410_abort_handler(unsigned long addr, unsigned int fsr,
			      struct pt_regs *regs)
{
	if ((fsr == 0x406 || fsr == 0xc06) && !fault_fixed_up) {
		pr_warn("External imprecise Data abort at addr=%#lx, fsr=%#x ignored.\n",
			addr, fsr);
		fault_fixed_up = 1;
		return 0;
	}

	return 1;
}

static void __init t410_abort_init(void)
{
	hook_fault_code(16 + 6, t410_abort_handler, SIGBUS, BUS_OBJERR,
			"imprecise external abort");
}
#endif

#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
static struct iommu_platform_data omap4_iommu_pdata = {
	.reset_name = "mmu_cache",
	.assert_reset = omap_device_assert_hardreset,
	.deassert_reset = omap_device_deassert_hardreset,
};
#endif

#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX)
static struct wkup_m3_platform_data wkup_m3_data = {
	.reset_name = "wkup_m3",
	.assert_reset = omap_device_assert_hardreset,
	.deassert_reset = omap_device_deassert_hardreset,
};
#endif

#ifdef CONFIG_SOC_OMAP5
static void __init omap5_uevm_legacy_init(void)
{
}
#endif

static struct pcs_pdata pcs_pdata;

void omap_pcs_legacy_init(int irq, void (*rearm)(void))
{
	pcs_pdata.irq = irq;
	pcs_pdata.rearm = rearm;
}

/*
 * GPIOs for TWL are initialized by the I2C bus and need custom
 * handing until DSS has device tree bindings.
 */
void omap_auxdata_legacy_init(struct device *dev)
{
	if (dev->platform_data)
		return;

	if (strcmp("twl4030-gpio", dev_name(dev)))
		return;

	dev->platform_data = &twl_gpio_auxdata;
}

/*
 * Few boards still need auxdata populated before we populate
 * the dev entries in of_platform_populate().
 */
static struct pdata_init auxdata_quirks[] __initdata = {
#ifdef CONFIG_SOC_OMAP2420
	{ "nokia,n800", omap2420_n8x0_legacy_init, },
	{ "nokia,n810", omap2420_n8x0_legacy_init, },
	{ "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
#endif
#ifdef CONFIG_ARCH_OMAP3
	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
#endif
	{ /* sentinel */ },
};

static struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
#ifdef CONFIG_MACH_NOKIA_N8X0
	OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
	OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
	OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data),
#endif
#ifdef CONFIG_ARCH_OMAP3
	OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
	OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata),
	OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
	OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
		       &omap3_iommu_pdata),
	/* Only on am3517 */
	OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
	OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
		       &am35xx_emac_pdata),
#endif
#ifdef CONFIG_SOC_AM33XX
	OF_DEV_AUXDATA("ti,am3352-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
		       &wkup_m3_data),
#endif
#ifdef CONFIG_ARCH_OMAP4
	OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
	OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
#endif
#ifdef CONFIG_SOC_OMAP5
	OF_DEV_AUXDATA("ti,omap5-padconf", 0x4a002840, "4a002840.pinmux", &pcs_pdata),
	OF_DEV_AUXDATA("ti,omap5-padconf", 0x4ae0c840, "4ae0c840.pinmux", &pcs_pdata),
#endif
#ifdef CONFIG_SOC_DRA7XX
	OF_DEV_AUXDATA("ti,dra7-padconf", 0x4a003400, "4a003400.pinmux", &pcs_pdata),
#endif
#ifdef CONFIG_SOC_AM43XX
	OF_DEV_AUXDATA("ti,am437-padconf", 0x44e10800, "44e10800.pinmux", &pcs_pdata),
	OF_DEV_AUXDATA("ti,am4372-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
		       &wkup_m3_data),
#endif
#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
	OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
		       &omap4_iommu_pdata),
	OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
		       &omap4_iommu_pdata),
#endif
	{ /* sentinel */ },
};

/*
 * Few boards still need to initialize some legacy devices with
 * platform data until the drivers support device tree.
 */
static struct pdata_init pdata_quirks[] __initdata = {
#ifdef CONFIG_ARCH_OMAP3
	{ "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
	{ "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
	{ "nokia,omap3-n900", nokia_n900_legacy_init, },
	{ "nokia,omap3-n9", hsmmc2_internal_input_clk, },
	{ "nokia,omap3-n950", hsmmc2_internal_input_clk, },
	{ "isee,omap3-igep0020-rev-f", omap3_igep0020_rev_f_legacy_init, },
	{ "isee,omap3-igep0030-rev-g", omap3_igep0030_rev_g_legacy_init, },
	{ "logicpd,dm3730-torpedo-devkit", omap3_gpio126_127_129, },
	{ "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
	{ "ti,am3517-evm", am3517_evm_legacy_init, },
	{ "technexion,omap3-tao3530", omap3_tao3530_legacy_init, },
	{ "openpandora,omap3-pandora-600mhz", omap3_pandora_legacy_init, },
	{ "openpandora,omap3-pandora-1ghz", omap3_pandora_legacy_init, },
#endif
#ifdef CONFIG_SOC_TI81XX
	{ "hp,t410", t410_abort_init, },
#endif
#ifdef CONFIG_SOC_OMAP5
	{ "ti,omap5-uevm", omap5_uevm_legacy_init, },
#endif
	{ /* sentinel */ },
};

static void pdata_quirks_check(struct pdata_init *quirks)
{
	while (quirks->compatible) {
		if (of_machine_is_compatible(quirks->compatible)) {
			if (quirks->fn)
				quirks->fn();
			break;
		}
		quirks++;
	}
}

void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
{
	omap_sdrc_init(NULL, NULL);
	pdata_quirks_check(auxdata_quirks);
	of_platform_populate(NULL, omap_dt_match_table,
			     omap_auxdata_lookup, NULL);
	pdata_quirks_check(pdata_quirks);
}