Commit b40082d0 authored by Hans de Goede's avatar Hans de Goede
Browse files

platform/x86: x86-android-tablets: Add TM800A550L data 



The whitelabel (sold as various brands) TM800A550L tablets's DSDT contains
a whole bunch of bogus ACPI I2C devices and the ACPI node describing
the touchscreen is bad (the IRQ is missing). Enumeration of these is
skipped through the acpi_quirk_skip_i2c_client_enumeration().

Add support for manually instantiating the (now) missing I2C devices by
adding the necessary device info to the x86-android-tablets module,
including instantiating an actually working i2c-client for
the touchscreen.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20211229231431.437982-13-hdegoede@redhat.com
parent f359c40b

drivers/platform/x86/x86-android-tablets.c

+92 −1
Original line number Diff line number Diff line
@@ -490,6 +490,86 @@ static const struct x86_dev_info chuwi_hi8_info __initconst = { 
	.i2c_client_count = ARRAY_SIZE(chuwi_hi8_i2c_clients),

};



/*

 * Whitelabel (sold as various brands) TM800A550L tablets.

 * These tablet's DSDT contains a whole bunch of bogus ACPI I2C devices

 * (removed through acpi_quirk_skip_i2c_client_enumeration()) and

 * the touchscreen fwnode has the wrong GPIOs.

 */

static const char * const whitelabel_tm800a550l_accel_mount_matrix[] = {

	"-1", "0", "0",

	"0", "1", "0",

	"0", "0", "1"

};



static const struct property_entry whitelabel_tm800a550l_accel_props[] = {

	PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", whitelabel_tm800a550l_accel_mount_matrix),

	{ }

};



static const struct software_node whitelabel_tm800a550l_accel_node = {

	.properties = whitelabel_tm800a550l_accel_props,

};



static const struct property_entry whitelabel_tm800a550l_goodix_props[] = {

	PROPERTY_ENTRY_STRING("firmware-name", "gt912-tm800a550l.fw"),

	PROPERTY_ENTRY_STRING("goodix,config-name", "gt912-tm800a550l.cfg"),

	PROPERTY_ENTRY_U32("goodix,main-clk", 54),

	{ }

};



static const struct software_node whitelabel_tm800a550l_goodix_node = {

	.properties = whitelabel_tm800a550l_goodix_props,

};



static const struct x86_i2c_client_info whitelabel_tm800a550l_i2c_clients[] __initconst = {

	{

		/* goodix touchscreen */

		.board_info = {

			.type = "GDIX1001:00",

			.addr = 0x14,

			.dev_name = "goodix_ts",

			.swnode = &whitelabel_tm800a550l_goodix_node,

		},

		.adapter_path = "\\_SB_.I2C2",

		.irq_data = {

			.type = X86_ACPI_IRQ_TYPE_APIC,

			.index = 0x44,

			.trigger = ACPI_EDGE_SENSITIVE,

			.polarity = ACPI_ACTIVE_HIGH,

		},

	}, {

		/* kxcj91008 accel */

		.board_info = {

			.type = "kxcj91008",

			.addr = 0x0f,

			.dev_name = "kxcj91008",

			.swnode = &whitelabel_tm800a550l_accel_node,

		},

		.adapter_path = "\\_SB_.I2C3",

	},

};



static struct gpiod_lookup_table whitelabel_tm800a550l_goodix_gpios = {

	.dev_id = "i2c-goodix_ts",

	.table = {

		GPIO_LOOKUP("INT33FC:01", 26, "reset", GPIO_ACTIVE_HIGH),

		GPIO_LOOKUP("INT33FC:02", 3, "irq", GPIO_ACTIVE_HIGH),

		{ }

	},

};



static struct gpiod_lookup_table *whitelabel_tm800a550l_gpios[] = {

	&whitelabel_tm800a550l_goodix_gpios,

	NULL

};



static const struct x86_dev_info whitelabel_tm800a550l_info __initconst = {

	.i2c_client_info = whitelabel_tm800a550l_i2c_clients,

	.i2c_client_count = ARRAY_SIZE(whitelabel_tm800a550l_i2c_clients),

	.gpiod_lookup_tables = whitelabel_tm800a550l_gpios,

};



/*

 * If the EFI bootloader is not Xiaomi's own signed Android loader, then the

 * Xiaomi Mi Pad 2 X86 tablet sets OSID in the DSDT to 1 (Windows), causing
@@ -560,7 +640,18 @@ static const struct dmi_system_id x86_android_tablet_ids[] __initconst = { 
			DMI_MATCH(DMI_PRODUCT_NAME, "S806"),

		},

		.driver_data = (void *)&chuwi_hi8_info,

	}, {

	},

	{

		/* Whitelabel (sold as various brands) TM800A550L */

		.matches = {

			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),

			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),

			/* Above strings are too generic, also match on BIOS version */

			DMI_MATCH(DMI_BIOS_VERSION, "ZY-8-BI-PX4S70VTR400-X423B-005-D"),

		},

		.driver_data = (void *)&whitelabel_tm800a550l_info,

	},

	{

		/* Xiaomi Mi Pad 2 */

		.matches = {

			DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),