Commit 9b1d2662 authored by Hans de Goede's avatar Hans de Goede
Browse files

platform/x86: x86-android-tablets: Add touchscreen support for Lenovo Yoga Tab 3 Pro YT3-X90F 



Add the necessary info to instantiate the I2C device for the touchscreen
on Lenovo Yoga Tab 3 Pro YT3-X90F tablets.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230301092331.7038-12-hdegoede@redhat.com
parent 772cbba5

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

+46 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 


#include <linux/efi.h>

#include <linux/gpio/machine.h>

#include <linux/mfd/intel_soc_pmic.h>

#include <linux/pinctrl/consumer.h>

#include <linux/pinctrl/machine.h>

#include <linux/platform_data/lp855x.h>
@@ -334,6 +335,17 @@ static const struct software_node lenovo_yt3_bq25892_0_node = { 
	.properties = lenovo_yt3_bq25892_0_props,

};



static const struct property_entry lenovo_yt3_hideep_ts_props[] = {

	PROPERTY_ENTRY_U32("touchscreen-size-x", 1600),

	PROPERTY_ENTRY_U32("touchscreen-size-y", 2560),

	PROPERTY_ENTRY_U32("touchscreen-max-pressure", 255),

	{ }

};



static const struct software_node lenovo_yt3_hideep_ts_node = {

	.properties = lenovo_yt3_hideep_ts_props,

};



static const struct x86_i2c_client_info lenovo_yt3_i2c_clients[] __initconst = {

	{

		/* bq27500 fuel-gauge for the flat lipo battery behind the screen */
@@ -369,6 +381,22 @@ static const struct x86_i2c_client_info lenovo_yt3_i2c_clients[] __initconst = { 
			.swnode = &fg_bq25890_1_supply_node,

		},

		.adapter_path = "\\_SB_.PCI0.I2C2",

	}, {

		/* HiDeep IST520E Touchscreen */

		.board_info = {

			.type = "hideep_ts",

			.addr = 0x6c,

			.dev_name = "hideep_ts",

			.swnode = &lenovo_yt3_hideep_ts_node,

		},

		.adapter_path = "\\_SB_.PCI0.I2C6",

		.irq_data = {

			.type = X86_ACPI_IRQ_TYPE_GPIOINT,

			.chip = "INT33FF:03",

			.index = 77,

			.trigger = ACPI_LEVEL_SENSITIVE,

			.polarity = ACPI_ACTIVE_LOW,

		},

	}

};
@@ -409,11 +437,29 @@ static int __init lenovo_yt3_init(void) 


	gpiod_set_value(gpiod, 0);



	/* Enable the regulators used by the touchscreen */

	intel_soc_pmic_exec_mipi_pmic_seq_element(0x6e, 0x9b, 0x02, 0xff);

	intel_soc_pmic_exec_mipi_pmic_seq_element(0x6e, 0xa0, 0x02, 0xff);



	return 0;

}



static struct gpiod_lookup_table lenovo_yt3_hideep_gpios = {

	.dev_id = "i2c-hideep_ts",

	.table = {

		GPIO_LOOKUP("INT33FF:00", 7, "reset", GPIO_ACTIVE_LOW),

		{ }

	},

};



static struct gpiod_lookup_table * const lenovo_yt3_gpios[] = {

	&lenovo_yt3_hideep_gpios,

	NULL

};



const struct x86_dev_info lenovo_yt3_info __initconst = {

	.i2c_client_info = lenovo_yt3_i2c_clients,

	.i2c_client_count = ARRAY_SIZE(lenovo_yt3_i2c_clients),

	.gpiod_lookup_tables = lenovo_yt3_gpios,

	.init = lenovo_yt3_init,

};