Commit 95b829f8 authored by Hans de Goede's avatar Hans de Goede
Browse files

platform/x86: x86-android-tablets: Add Wacom digitizer info for Lenovo Yoga Book 



The Lenovo Yoga Book has a wacom digitizer in its keyboard half,
add the necessary info to instantiate an i2c_client for the digitizer.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230416212841.311152-2-hdegoede@redhat.com
parent 02377e98

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

+35 −0
Original line number Diff line number Diff line
@@ -40,6 +40,16 @@ static struct lp855x_platform_data lenovo_lp8557_pdata = { 


/* Lenovo Yoga Book X90F / X90L's Android factory img has everything hardcoded */



static const struct property_entry lenovo_yb1_x90_wacom_props[] = {

	PROPERTY_ENTRY_U32("hid-descr-addr", 0x0001),

	PROPERTY_ENTRY_U32("post-reset-deassert-delay-ms", 150),

	{ }

};



static const struct software_node lenovo_yb1_x90_wacom_node = {

	.properties = lenovo_yb1_x90_wacom_props,

};



/*

 * The HiDeep IST940E touchscreen comes up in I2C-HID mode. The native protocol

 * reports ABS_MT_PRESSURE and ABS_MT_TOUCH_MAJOR which are not reported in HID
@@ -86,6 +96,22 @@ static const struct x86_i2c_client_info lenovo_yb1_x90_i2c_clients[] __initconst 
			.trigger = ACPI_EDGE_SENSITIVE,

			.polarity = ACPI_ACTIVE_LOW,

		},

	}, {

		/* Wacom Digitizer in keyboard half */

		.board_info = {

			.type = "hid-over-i2c",

			.addr = 0x09,

			.dev_name = "wacom",

			.swnode = &lenovo_yb1_x90_wacom_node,

		},

		.adapter_path = "\\_SB_.PCI0.I2C4",

		.irq_data = {

			.type = X86_ACPI_IRQ_TYPE_GPIOINT,

			.chip = "INT33FF:01",

			.index = 49,

			.trigger = ACPI_LEVEL_SENSITIVE,

			.polarity = ACPI_ACTIVE_LOW,

		},

	}, {

		/* LP8557 Backlight controller */

		.board_info = {
@@ -131,9 +157,18 @@ static struct gpiod_lookup_table lenovo_yb1_x90_hideep_gpios = { 
	},

};



static struct gpiod_lookup_table lenovo_yb1_x90_wacom_gpios = {

	.dev_id = "i2c-wacom",

	.table = {

		GPIO_LOOKUP("INT33FF:00", 82, "reset", GPIO_ACTIVE_LOW),

		{ }

	},

};



static struct gpiod_lookup_table * const lenovo_yb1_x90_gpios[] = {

	&lenovo_yb1_x90_hideep_gpios,

	&lenovo_yb1_x90_goodix_gpios,

	&lenovo_yb1_x90_wacom_gpios,

	NULL

};