Merge branches 'acpi-x86', 'acpi-soc', 'acpi-pmic' and 'acpi-apple'

* acpi-x86:
  ACPI / boot: Add number of legacy IRQs to debug output
  ACPI / boot: Correct address space of __acpi_map_table()
  ACPI / boot: Don't define unused variables

* acpi-soc:
  ACPI / LPSS: Don't abort ACPI scan on missing mem resource

* acpi-pmic:
  ACPI / PMIC: xpower: Do pinswitch magic when reading GPADC

* acpi-apple:
  spi: Use Apple device properties in absence of ACPI resources
  ACPI / scan: Recognize Apple SPI and I2C slaves
  ACPI / property: Support Apple _DSM properties
  ACPI / property: Don't evaluate objects for devices w/o handle
  treewide: Consolidate Apple DMI checks

arch/arm64/kernel/acpi.c

@@ -95,7 +95,7 @@ static int __init dt_scan_depth1_nodes(unsigned long node,
  * __acpi_map_table() will be called before page_init(), so early_ioremap()
  * or early_memremap() should be called here to for ACPI table mapping.
  */
-char *__init __acpi_map_table(unsigned long phys, unsigned long size)
+void __init __iomem *__acpi_map_table(unsigned long phys, unsigned long size)
 {
 	if (!size)
 		return NULL;
@@ -103,7 +103,7 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
 	return early_memremap(phys, size);
 }
 
-void __init __acpi_unmap_table(char *map, unsigned long size)
+void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
 {
 	if (!map || !size)
 		return;

arch/ia64/kernel/acpi.c

@@ -159,12 +159,12 @@ int acpi_request_vector(u32 int_type)
 	return vector;
 }
 
-char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
+void __init __iomem *__acpi_map_table(unsigned long phys, unsigned long size)
 {
-	return __va(phys_addr);
+	return __va(phys);
 }
 
-void __init __acpi_unmap_table(char *map, unsigned long size)
+void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
 {
 }
 

arch/x86/include/asm/setup.h

@@ -39,6 +39,7 @@ static inline void vsmp_init(void) { }
 #endif
 
 void setup_bios_corruption_check(void);
+void early_platform_quirks(void);
 
 extern unsigned long saved_video_mode;
 

arch/x86/kernel/acpi/boot.c

@@ -118,7 +118,7 @@ static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = {
  * This is just a simple wrapper around early_ioremap(),
  * with sanity checks for phys == 0 and size == 0.
  */
-char *__init __acpi_map_table(unsigned long phys, unsigned long size)
+void __init __iomem *__acpi_map_table(unsigned long phys, unsigned long size)
 {
 
 	if (!phys || !size)
@@ -127,7 +127,7 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
 	return early_ioremap(phys, size);
 }
 
-void __init __acpi_unmap_table(char *map, unsigned long size)
+void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
 {
 	if (!map || !size)
 		return;
@@ -199,8 +199,10 @@ static int __init
 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
 {
 	struct acpi_madt_local_x2apic *processor = NULL;
+#ifdef CONFIG_X86_X2APIC
 	int apic_id;
 	u8 enabled;
+#endif
 
 	processor = (struct acpi_madt_local_x2apic *)header;
 
@@ -209,9 +211,10 @@ acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
 
 	acpi_table_print_madt_entry(header);
 
+#ifdef CONFIG_X86_X2APIC
 	apic_id = processor->local_apic_id;
 	enabled = processor->lapic_flags & ACPI_MADT_ENABLED;
-#ifdef CONFIG_X86_X2APIC
+
 	/*
 	 * We need to register disabled CPU as well to permit
 	 * counting disabled CPUs. This allows us to size
@@ -1083,7 +1086,7 @@ static void __init mp_config_acpi_legacy_irqs(void)
 	mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
 #endif
 	set_bit(MP_ISA_BUS, mp_bus_not_pci);
-	pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
+	pr_debug("Bus #%d is ISA (nIRQs: %d)\n", MP_ISA_BUS, nr_legacy_irqs());
 
 	/*
 	 * Use the default configuration for the IRQs 0-15.  Unless

arch/x86/kernel/early-quirks.c

@@ -12,10 +12,10 @@
 #include <linux/pci.h>
 #include <linux/acpi.h>
 #include <linux/delay.h>
-#include <linux/dmi.h>
 #include <linux/pci_ids.h>
 #include <linux/bcma/bcma.h>
 #include <linux/bcma/bcma_regs.h>
+#include <linux/platform_data/x86/apple.h>
 #include <drm/i915_drm.h>
 #include <asm/pci-direct.h>
 #include <asm/dma.h>
@@ -593,7 +593,7 @@ static void __init apple_airport_reset(int bus, int slot, int func)
 	u64 addr;
 	int i;
 
-	if (!dmi_match(DMI_SYS_VENDOR, "Apple Inc."))
+	if (!x86_apple_machine)
 		return;
 
 	/* Card may have been put into PCI_D3hot by grub quirk */

arch/x86/kernel/quirks.c

@@ -1,6 +1,7 @@
 /*
  * This file contains work-arounds for x86 and x86_64 platform bugs.
  */
+#include <linux/dmi.h>
 #include <linux/pci.h>
 #include <linux/irq.h>
 
@@ -656,3 +657,12 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fc0, quirk_intel_brickland_xeon_
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2083, quirk_intel_purley_xeon_ras_cap);
 #endif
 #endif
+
+bool x86_apple_machine;
+EXPORT_SYMBOL(x86_apple_machine);
+
+void __init early_platform_quirks(void)
+{
+	x86_apple_machine = dmi_match(DMI_SYS_VENDOR, "Apple Inc.") ||
+			    dmi_match(DMI_SYS_VENDOR, "Apple Computer, Inc.");
+}

arch/x86/kernel/setup.c

@@ -1206,6 +1206,8 @@ void __init setup_arch(char **cmdline_p)
 
 	io_delay_init();
 
+	early_platform_quirks();
+
 	/*
 	 * Parse the ACPI tables for possible boot-time SMP configuration.
 	 */

drivers/acpi/Makefile

@@ -50,6 +50,7 @@ acpi-$(CONFIG_ACPI_REDUCED_HARDWARE_ONLY) += evged.o
 acpi-y				+= sysfs.o
 acpi-y				+= property.o
 acpi-$(CONFIG_X86)		+= acpi_cmos_rtc.o
+acpi-$(CONFIG_X86)		+= x86/apple.o
 acpi-$(CONFIG_X86)		+= x86/utils.o
 acpi-$(CONFIG_DEBUG_FS)		+= debugfs.o
 acpi-$(CONFIG_ACPI_NUMA)	+= numa.o

drivers/acpi/acpi_lpss.c

@@ -465,7 +465,8 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
 	acpi_dev_free_resource_list(&resource_list);
 
 	if (!pdata->mmio_base) {
-		ret = -ENOMEM;
+		/* Skip the device, but continue the namespace scan. */
+		ret = 0;
 		goto err_out;
 	}
 

drivers/acpi/internal.h

@@ -232,6 +232,12 @@ static inline void suspend_nvs_restore(void) {}
 void acpi_init_properties(struct acpi_device *adev);
 void acpi_free_properties(struct acpi_device *adev);
 
+#ifdef CONFIG_X86
+void acpi_extract_apple_properties(struct acpi_device *adev);
+#else
+static inline void acpi_extract_apple_properties(struct acpi_device *adev) {}
+#endif
+
 /*--------------------------------------------------------------------------
 				Watchdog
   -------------------------------------------------------------------------- */

drivers/acpi/osi.c

@@ -27,6 +27,7 @@
 #include <linux/kernel.h>
 #include <linux/acpi.h>
 #include <linux/dmi.h>
+#include <linux/platform_data/x86/apple.h>
 
 #include "internal.h"
 
@@ -257,12 +258,11 @@ bool acpi_osi_is_win8(void)
 }
 EXPORT_SYMBOL(acpi_osi_is_win8);
 
-static void __init acpi_osi_dmi_darwin(bool enable,
-				       const struct dmi_system_id *d)
+static void __init acpi_osi_dmi_darwin(void)
 {
-	pr_notice("DMI detected to setup _OSI(\"Darwin\"): %s\n", d->ident);
+	pr_notice("DMI detected to setup _OSI(\"Darwin\"): Apple hardware\n");
 	osi_config.darwin_dmi = 1;
-	__acpi_osi_setup_darwin(enable);
+	__acpi_osi_setup_darwin(true);
 }
 
 static void __init acpi_osi_dmi_linux(bool enable,
@@ -273,13 +273,6 @@ static void __init acpi_osi_dmi_linux(bool enable,
 	__acpi_osi_setup_linux(enable);
 }
 
-static int __init dmi_enable_osi_darwin(const struct dmi_system_id *d)
-{
-	acpi_osi_dmi_darwin(true, d);
-
-	return 0;
-}
-
 static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
 {
 	acpi_osi_dmi_linux(true, d);
@@ -481,30 +474,16 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 		     DMI_MATCH(DMI_PRODUCT_NAME, "1015PX"),
 		},
 	},
-
-	/*
-	 * Enable _OSI("Darwin") for all apple platforms.
-	 */
-	{
-	.callback = dmi_enable_osi_darwin,
-	.ident = "Apple hardware",
-	.matches = {
-		     DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-		},
-	},
-	{
-	.callback = dmi_enable_osi_darwin,
-	.ident = "Apple hardware",
-	.matches = {
-		     DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
-		},
-	},
 	{}
 };
 
 static __init void acpi_osi_dmi_blacklisted(void)
 {
 	dmi_check_system(acpi_osi_dmi_table);
+
+	/* Enable _OSI("Darwin") for Apple platforms. */
+	if (x86_apple_machine)
+		acpi_osi_dmi_darwin();
 }
 
 int __init early_acpi_osi_init(void)

drivers/acpi/pci_root.c

@@ -33,6 +33,7 @@
 #include <linux/acpi.h>
 #include <linux/slab.h>
 #include <linux/dmi.h>
+#include <linux/platform_data/x86/apple.h>
 #include <acpi/apei.h>	/* for acpi_hest_init() */
 
 #include "internal.h"
@@ -431,8 +432,7 @@ static void negotiate_os_control(struct acpi_pci_root *root, int *no_aspm)
 	 * been called successfully. We know the feature set supported by the
 	 * platform, so avoid calling _OSC at all
 	 */
-
-	if (dmi_match(DMI_SYS_VENDOR, "Apple Inc.")) {
+	if (x86_apple_machine) {
 		root->osc_control_set = ~OSC_PCI_EXPRESS_PME_CONTROL;
 		decode_osc_control(root, "OS assumes control of",
 				   root->osc_control_set);

drivers/acpi/pmic/intel_pmic_xpower.c

@@ -27,6 +27,9 @@
 #define GPI1_LDO_ON		(3 << 0)
 #define GPI1_LDO_OFF		(4 << 0)
 
+#define AXP288_ADC_TS_PIN_GPADC	0xf2
+#define AXP288_ADC_TS_PIN_ON	0xf3
+
 static struct pmic_table power_table[] = {
 	{
 		.address = 0x00,
@@ -209,11 +212,23 @@ static int intel_xpower_pmic_update_power(struct regmap *regmap, int reg,
 static int intel_xpower_pmic_get_raw_temp(struct regmap *regmap, int reg)
 {
 	u8 buf[2];
+	int ret;
 
-	if (regmap_bulk_read(regmap, AXP288_GP_ADC_H, buf, 2))
-		return -EIO;
+	ret = regmap_write(regmap, AXP288_ADC_TS_PIN_CTRL,
+			   AXP288_ADC_TS_PIN_GPADC);
+	if (ret)
+		return ret;
+
+	/* After switching to the GPADC pin give things some time to settle */
+	usleep_range(6000, 10000);
+
+	ret = regmap_bulk_read(regmap, AXP288_GP_ADC_H, buf, 2);
+	if (ret == 0)
+		ret = (buf[0] << 4) + ((buf[1] >> 4) & 0x0f);
+
+	regmap_write(regmap, AXP288_ADC_TS_PIN_CTRL, AXP288_ADC_TS_PIN_ON);
 
-	return (buf[0] << 4) + ((buf[1] >> 4) & 0x0F);
+	return ret;
 }
 
 static struct intel_pmic_opregion_data intel_xpower_pmic_opregion_data = {

drivers/acpi/property.c

@@ -339,6 +339,9 @@ void acpi_init_properties(struct acpi_device *adev)
 
 	INIT_LIST_HEAD(&adev->data.subnodes);
 
+	if (!adev->handle)
+		return;
+
 	/*
 	 * Check if ACPI_DT_NAMESPACE_HID is present and inthat case we fill in
 	 * Device Tree compatible properties for this device.
@@ -373,6 +376,9 @@ void acpi_init_properties(struct acpi_device *adev)
 	if (acpi_of && !adev->flags.of_compatible_ok)
 		acpi_handle_info(adev->handle,
 			 ACPI_DT_NAMESPACE_HID " requires 'compatible' property\n");
+
+	if (!adev->data.pointer)
+		acpi_extract_apple_properties(adev);
 }
 
 static void acpi_destroy_nondev_subnodes(struct list_head *list)

drivers/acpi/sbs.c

@@ -31,7 +31,7 @@
 #include <linux/jiffies.h>
 #include <linux/delay.h>
 #include <linux/power_supply.h>
-#include <linux/dmi.h>
+#include <linux/platform_data/x86/apple.h>
 
 #include "sbshc.h"
 #include "battery.h"
@@ -58,8 +58,6 @@ static unsigned int cache_time = 1000;
 module_param(cache_time, uint, 0644);
 MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
 
-static bool sbs_manager_broken;
-
 #define MAX_SBS_BAT			4
 #define ACPI_SBS_BLOCK_MAX		32
 
@@ -632,31 +630,12 @@ static void acpi_sbs_callback(void *context)
 	}
 }
 
-static int disable_sbs_manager(const struct dmi_system_id *d)
-{
-	sbs_manager_broken = true;
-	return 0;
-}
-
-static struct dmi_system_id acpi_sbs_dmi_table[] = {
-	{
-		.callback = disable_sbs_manager,
-		.ident = "Apple",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc.")
-		},
-	},
-	{ },
-};
-
 static int acpi_sbs_add(struct acpi_device *device)
 {
 	struct acpi_sbs *sbs;
 	int result = 0;
 	int id;
 
-	dmi_check_system(acpi_sbs_dmi_table);
-
 	sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
 	if (!sbs) {
 		result = -ENOMEM;
@@ -677,7 +656,7 @@ static int acpi_sbs_add(struct acpi_device *device)
 
 	result = 0;
 
-	if (!sbs_manager_broken) {
+	if (!x86_apple_machine) {
 		result = acpi_manager_get_info(sbs);
 		if (!result) {
 			sbs->manager_present = 1;

drivers/acpi/scan.c

@@ -13,6 +13,7 @@
 #include <linux/dmi.h>
 #include <linux/nls.h>
 #include <linux/dma-mapping.h>
+#include <linux/platform_data/x86/apple.h>
 
 #include <asm/pgtable.h>
 
@@ -1527,6 +1528,12 @@ static bool acpi_is_spi_i2c_slave(struct acpi_device *device)
 	struct list_head resource_list;
 	bool is_spi_i2c_slave = false;
 
+	/* Macs use device properties in lieu of _CRS resources */
+	if (x86_apple_machine &&
+	    (fwnode_property_present(&device->fwnode, "spiSclkPeriod") ||
+	     fwnode_property_present(&device->fwnode, "i2cAddress")))
+		return true;
+
 	INIT_LIST_HEAD(&resource_list);
 	acpi_dev_get_resources(device, &resource_list, acpi_check_spi_i2c_slave,
 			       &is_spi_i2c_slave);

drivers/acpi/x86/apple.c

@@ -0,0 +1,141 @@
+/*
+ * apple.c - Apple ACPI quirks
+ * Copyright (C) 2017 Lukas Wunner <lukas@wunner.de>
+ *
+ * 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/acpi.h>
+#include <linux/bitmap.h>
+#include <linux/platform_data/x86/apple.h>
+#include <linux/uuid.h>
+
+/* Apple _DSM device properties GUID */
+static const guid_t apple_prp_guid =
+	GUID_INIT(0xa0b5b7c6, 0x1318, 0x441c,
+		  0xb0, 0xc9, 0xfe, 0x69, 0x5e, 0xaf, 0x94, 0x9b);
+
+/**
+ * acpi_extract_apple_properties - retrieve and convert Apple _DSM properties
+ * @adev: ACPI device for which to retrieve the properties
+ *
+ * Invoke Apple's custom _DSM once to check the protocol version and once more
+ * to retrieve the properties.  They are marshalled up in a single package as
+ * alternating key/value elements, unlike _DSD which stores them as a package
+ * of 2-element packages.  Convert to _DSD format and make them available under
+ * the primary fwnode.
+ */
+void acpi_extract_apple_properties(struct acpi_device *adev)
+{
+	unsigned int i, j = 0, newsize = 0, numprops, numvalid;
+	union acpi_object *props, *newprops;
+	unsigned long *valid = NULL;
+	void *free_space;
+
+	if (!x86_apple_machine)
+		return;
+
+	props = acpi_evaluate_dsm_typed(adev->handle, &apple_prp_guid, 1, 0,
+					NULL, ACPI_TYPE_BUFFER);
+	if (!props)
+		return;
+
+	if (!props->buffer.length)
+		goto out_free;
+
+	if (props->buffer.pointer[0] != 3) {
+		acpi_handle_info(adev->handle, FW_INFO
+				 "unsupported properties version %*ph\n",
+				 props->buffer.length, props->buffer.pointer);
+		goto out_free;
+	}
+
+	ACPI_FREE(props);
+	props = acpi_evaluate_dsm_typed(adev->handle, &apple_prp_guid, 1, 1,
+					NULL, ACPI_TYPE_PACKAGE);
+	if (!props)
+		return;
+
+	numprops = props->package.count / 2;
+	if (!numprops)
+		goto out_free;
+
+	valid = kcalloc(BITS_TO_LONGS(numprops), sizeof(long), GFP_KERNEL);
+	if (!valid)
+		goto out_free;
+
+	/* newsize = key length + value length of each tuple */
+	for (i = 0; i < numprops; i++) {
+		union acpi_object *key = &props->package.elements[i * 2];
+		union acpi_object *val = &props->package.elements[i * 2 + 1];
+
+		if ( key->type != ACPI_TYPE_STRING ||
+		    (val->type != ACPI_TYPE_INTEGER &&
+		     val->type != ACPI_TYPE_BUFFER))
+			continue; /* skip invalid properties */
+
+		__set_bit(i, valid);
+		newsize += key->string.length + 1;
+		if ( val->type == ACPI_TYPE_BUFFER)
+			newsize += val->buffer.length;
+	}
+
+	numvalid = bitmap_weight(valid, numprops);
+	if (numprops > numvalid)
+		acpi_handle_info(adev->handle, FW_INFO
+				 "skipped %u properties: wrong type\n",
+				 numprops - numvalid);
+	if (numvalid == 0)
+		goto out_free;
+
+	/* newsize += top-level package + 3 objects for each key/value tuple */
+	newsize	+= (1 + 3 * numvalid) * sizeof(union acpi_object);
+	newprops = ACPI_ALLOCATE_ZEROED(newsize);
+	if (!newprops)
+		goto out_free;
+
+	/* layout: top-level package | packages | key/value tuples | strings */
+	newprops->type = ACPI_TYPE_PACKAGE;
+	newprops->package.count = numvalid;
+	newprops->package.elements = &newprops[1];
+	free_space = &newprops[1 + 3 * numvalid];
+
+	for_each_set_bit(i, valid, numprops) {
+		union acpi_object *key = &props->package.elements[i * 2];
+		union acpi_object *val = &props->package.elements[i * 2 + 1];
+		unsigned int k = 1 + numvalid + j * 2; /* index into newprops */
+		unsigned int v = k + 1;
+
+		newprops[1 + j].type = ACPI_TYPE_PACKAGE;
+		newprops[1 + j].package.count = 2;
+		newprops[1 + j].package.elements = &newprops[k];
+
+		newprops[k].type = ACPI_TYPE_STRING;
+		newprops[k].string.length = key->string.length;
+		newprops[k].string.pointer = free_space;
+		memcpy(free_space, key->string.pointer, key->string.length);
+		free_space += key->string.length + 1;
+
+		newprops[v].type = val->type;
+		if (val->type == ACPI_TYPE_INTEGER) {
+			newprops[v].integer.value = val->integer.value;
+		} else {
+			newprops[v].buffer.length = val->buffer.length;
+			newprops[v].buffer.pointer = free_space;
+			memcpy(free_space, val->buffer.pointer,
+			       val->buffer.length);
+			free_space += val->buffer.length;
+		}
+		j++; /* count valid properties */
+	}
+	WARN_ON(free_space != (void *)newprops + newsize);
+
+	adev->data.properties = newprops;
+	adev->data.pointer = newprops;
+
+out_free:
+	ACPI_FREE(props);
+	kfree(valid);
+}

drivers/firmware/efi/apple-properties.c

@@ -18,8 +18,8 @@
 #define pr_fmt(fmt) "apple-properties: " fmt
 
 #include <linux/bootmem.h>
-#include <linux/dmi.h>
 #include <linux/efi.h>
+#include <linux/platform_data/x86/apple.h>
 #include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/ucs2_string.h>
@@ -191,8 +191,7 @@ static int __init map_properties(void)
 	u64 pa_data;
 	int ret;
 
-	if (!dmi_match(DMI_SYS_VENDOR, "Apple Inc.") &&
-	    !dmi_match(DMI_SYS_VENDOR, "Apple Computer, Inc."))
+	if (!x86_apple_machine)
 		return 0;
 
 	pa_data = boot_params.hdr.setup_data;

drivers/pci/quirks.c

@@ -25,6 +25,7 @@
 #include <linux/sched.h>
 #include <linux/ktime.h>
 #include <linux/mm.h>
+#include <linux/platform_data/x86/apple.h>
 #include <asm/dma.h>	/* isa_dma_bridge_buggy */
 #include "pci.h"
 
@@ -3447,7 +3448,7 @@ static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev)
 {
 	acpi_handle bridge, SXIO, SXFP, SXLV;
 
-	if (!dmi_match(DMI_BOARD_VENDOR, "Apple Inc."))
+	if (!x86_apple_machine)
 		return;
 	if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM)
 		return;
@@ -3492,7 +3493,7 @@ static void quirk_apple_wait_for_thunderbolt(struct pci_dev *dev)
 	struct pci_dev *sibling = NULL;
 	struct pci_dev *nhi = NULL;
 
-	if (!dmi_match(DMI_BOARD_VENDOR, "Apple Inc."))
+	if (!x86_apple_machine)
 		return;
 	if (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM)
 		return;

drivers/spi/spi.c

@@ -40,6 +40,7 @@
 #include <linux/ioport.h>
 #include <linux/acpi.h>
 #include <linux/highmem.h>
+#include <linux/platform_data/x86/apple.h>
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/spi.h>
@@ -1693,6 +1694,35 @@ static void of_register_spi_devices(struct spi_controller *ctlr) { }
 #endif
 
 #ifdef CONFIG_ACPI
+static void acpi_spi_parse_apple_properties(struct spi_device *spi)
+{
+	struct acpi_device *dev = ACPI_COMPANION(&spi->dev);
+	const union acpi_object *obj;
+
+	if (!x86_apple_machine)
+		return;
+
+	if (!acpi_dev_get_property(dev, "spiSclkPeriod", ACPI_TYPE_BUFFER, &obj)
+	    && obj->buffer.length >= 4)
+		spi->max_speed_hz  = NSEC_PER_SEC / *(u32 *)obj->buffer.pointer;
+
+	if (!acpi_dev_get_property(dev, "spiWordSize", ACPI_TYPE_BUFFER, &obj)
+	    && obj->buffer.length == 8)
+		spi->bits_per_word = *(u64 *)obj->buffer.pointer;
+
+	if (!acpi_dev_get_property(dev, "spiBitOrder", ACPI_TYPE_BUFFER, &obj)
+	    && obj->buffer.length == 8 && !*(u64 *)obj->buffer.pointer)
+		spi->mode |= SPI_LSB_FIRST;
+
+	if (!acpi_dev_get_property(dev, "spiSPO", ACPI_TYPE_BUFFER, &obj)
+	    && obj->buffer.length == 8 &&  *(u64 *)obj->buffer.pointer)
+		spi->mode |= SPI_CPOL;
+
+	if (!acpi_dev_get_property(dev, "spiSPH", ACPI_TYPE_BUFFER, &obj)
+	    && obj->buffer.length == 8 &&  *(u64 *)obj->buffer.pointer)
+		spi->mode |= SPI_CPHA;
+}
+
 static int acpi_spi_add_resource(struct acpi_resource *ares, void *data)
 {
 	struct spi_device *spi = data;
@@ -1766,6 +1796,8 @@ static acpi_status acpi_register_spi_device(struct spi_controller *ctlr,
 				     acpi_spi_add_resource, spi);
 	acpi_dev_free_resource_list(&resource_list);
 
+	acpi_spi_parse_apple_properties(spi);
+
 	if (ret < 0 || !spi->max_speed_hz) {
 		spi_dev_put(spi);
 		return AE_OK;

drivers/thunderbolt/icm.c

@@ -13,9 +13,9 @@
  */
 
 #include <linux/delay.h>
-#include <linux/dmi.h>
 #include <linux/mutex.h>
 #include <linux/pci.h>
+#include <linux/platform_data/x86/apple.h>
 #include <linux/sizes.h>
 #include <linux/slab.h>
 #include <linux/workqueue.h>
@@ -102,11 +102,6 @@ static inline u64 get_route(u32 route_hi, u32 route_lo)
 	return (u64)route_hi << 32 | route_lo;
 }
 
-static inline bool is_apple(void)
-{
-	return dmi_match(DMI_BOARD_VENDOR, "Apple Inc.");
-}
-
 static bool icm_match(const struct tb_cfg_request *req,
 		      const struct ctl_pkg *pkg)
 {
@@ -176,7 +171,7 @@ static int icm_request(struct tb *tb, const void *request, size_t request_size,
 
 static bool icm_fr_is_supported(struct tb *tb)
 {
-	return !is_apple();
+	return !x86_apple_machine;
 }
 
 static inline int icm_fr_get_switch_index(u32 port)
@@ -517,7 +512,7 @@ static bool icm_ar_is_supported(struct tb *tb)
 	 * Starting from Alpine Ridge we can use ICM on Apple machines
 	 * as well. We just need to reset and re-enable it first.
 	 */
-	if (!is_apple())
+	if (!x86_apple_machine)
 		return true;
 
 	/*
@@ -1011,7 +1006,7 @@ static int icm_start(struct tb *tb)
 	 * don't provide images publicly either. To be on the safe side
 	 * prevent root switch NVM upgrade on Macs for now.
 	 */
-	tb->root_switch->no_nvm_upgrade = is_apple();
+	tb->root_switch->no_nvm_upgrade = x86_apple_machine;
 
 	ret = tb_switch_add(tb->root_switch);
 	if (ret)

drivers/thunderbolt/tb.c

@@ -7,7 +7,7 @@
 #include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/delay.h>
-#include <linux/dmi.h>
+#include <linux/platform_data/x86/apple.h>
 
 #include "tb.h"
 #include "tb_regs.h"
@@ -453,7 +453,7 @@ struct tb *tb_probe(struct tb_nhi *nhi)
 	struct tb_cm *tcm;
 	struct tb *tb;
 
-	if (!dmi_match(DMI_BOARD_VENDOR, "Apple Inc."))
+	if (!x86_apple_machine)
 		return NULL;
 
 	tb = tb_domain_alloc(nhi, sizeof(*tcm));

include/linux/acpi.h

@@ -228,8 +228,8 @@ struct acpi_subtable_proc {
 	int count;
 };
 
-char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
-void __acpi_unmap_table(char *map, unsigned long size);
+void __iomem *__acpi_map_table(unsigned long phys, unsigned long size);
+void __acpi_unmap_table(void __iomem *map, unsigned long size);
 int early_acpi_boot_init(void);
 int acpi_boot_init (void);
 void acpi_boot_table_init (void);

include/linux/platform_data/x86/apple.h

@@ -0,0 +1,13 @@
+#ifndef PLATFORM_DATA_X86_APPLE_H
+#define PLATFORM_DATA_X86_APPLE_H
+
+#ifdef CONFIG_X86
+/**
+ * x86_apple_machine - whether the machine is an x86 Apple Macintosh
+ */
+extern bool x86_apple_machine;
+#else
+#define x86_apple_machine false
+#endif
+
+#endif