Commit b03ae77e authored by Hans de Goede's avatar Hans de Goede
Browse files

platform/x86: x86-android-tablets: Add Advantech MICA-071 extra button 



The Advantech MICA-071 is a standard Windows tablet, but it has an extra
"quick launch" button which is not described in the ACPI tables in anyway.

Use the x86-android-tablets infra to create a gpio-button device for this.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20221127221928.123660-1-hdegoede@redhat.com
parent b6c14ff1

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

+58 −0
Original line number Diff line number Diff line
@@ -265,6 +265,56 @@ static struct gpiod_lookup_table int3496_gpo2_pin22_gpios = { 
	},

};



/*

 * Advantech MICA-071

 * This is a standard Windows tablet, but it has an extra "quick launch" button

 * which is not described in the ACPI tables in anyway.

 * Use the x86-android-tablets infra to create a gpio-button device for this.

 */

static struct gpio_keys_button advantech_mica_071_button = {

	.code = KEY_PROG1,

	/* .gpio gets filled in by advantech_mica_071_init() */

	.active_low = true,

	.desc = "prog1_key",

	.type = EV_KEY,

	.wakeup = false,

	.debounce_interval = 50,

};



static const struct gpio_keys_platform_data advantech_mica_071_button_pdata __initconst = {

	.buttons = &advantech_mica_071_button,

	.nbuttons = 1,

	.name = "prog1_key",

};



static const struct platform_device_info advantech_mica_071_pdevs[] __initconst = {

	{

		.name = "gpio-keys",

		.id = PLATFORM_DEVID_AUTO,

		.data = &advantech_mica_071_button_pdata,

		.size_data = sizeof(advantech_mica_071_button_pdata),

	},

};



static int __init advantech_mica_071_init(void)

{

	struct gpio_desc *gpiod;

	int ret;



	ret = x86_android_tablet_get_gpiod("INT33FC:00", 2, &gpiod);

	if (ret < 0)

		return ret;

	advantech_mica_071_button.gpio = desc_to_gpio(gpiod);



	return 0;

}



static const struct x86_dev_info advantech_mica_071_info __initconst = {

	.pdev_info = advantech_mica_071_pdevs,

	.pdev_count = ARRAY_SIZE(advantech_mica_071_pdevs),

	.init = advantech_mica_071_init,

};



/* Asus ME176C and TF103C tablets shared data */

static struct gpio_keys_button asus_me176c_tf103c_lid = {

	.code = SW_LID,
@@ -1385,6 +1435,14 @@ static const struct x86_dev_info xiaomi_mipad2_info __initconst = { 
};



static const struct dmi_system_id x86_android_tablet_ids[] __initconst = {

	{

		/* Advantech MICA-071 */

		.matches = {

			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Advantech"),

			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "MICA-071"),

		},

		.driver_data = (void *)&advantech_mica_071_info,

	},

	{

		/* Asus MeMO Pad 7 ME176C */

		.matches = {