platform/x86: x86-android-tablets: Add support for extra buttons on Cyberbook T116

The Cyberbook T116 rugged tablet comes in both Windows and Android versions
and even on the Android version the DSDT is mostly sane. This tablet has
2 extra general purpose buttons in the row with the power + volume-buttons,
labeled P and F.

Use the x86-android-tablets infra to create a gpio-button device for these
2 extra buttons.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230505205901.42649-2-hdegoede@redhat.com

3 files changed, 51 insertions, 0 deletions

diff --git a/drivers/platform/x86/x86-android-tablets/dmi.c b/drivers/platform/x86/x86-android-tablets/dmi.c
index e00cfa7d7aac..5d6c12494f08 100644
--- a/drivers/platform/x86/x86-android-tablets/dmi.c
+++ b/drivers/platform/x86/x86-android-tablets/dmi.c
@@ -59,6 +59,17 @@ const struct dmi_system_id x86_android_tablet_ids[] __initconst = {
 		.driver_data = (void *)&chuwi_hi8_info,
 	},
 	{
+		/* Cyberbook T116 Android version */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Default string"),
+			DMI_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
+			/* Above strings are much too generic, also match on SKU + BIOS date */
+			DMI_MATCH(DMI_PRODUCT_SKU, "20170531"),
+			DMI_MATCH(DMI_BIOS_DATE, "07/12/2017"),
+		},
+		.driver_data = (void *)&cyberbook_t116_info,
+	},
+	{
 		/* CZC P10T */
 		.ident = "CZC ODEON TPC-10 (\"P10T\")",
 		.matches = {
diff --git a/drivers/platform/x86/x86-android-tablets/other.c b/drivers/platform/x86/x86-android-tablets/other.c
index 4d54c89e6ca2..e79549c6aae1 100644
--- a/drivers/platform/x86/x86-android-tablets/other.c
+++ b/drivers/platform/x86/x86-android-tablets/other.c
@@ -197,6 +197,45 @@ const struct x86_dev_info chuwi_hi8_info __initconst = {
 	.init = chuwi_hi8_init,
 };
 
+/*
+ * Cyberbook T116 Android version
+ * This comes in both Windows and Android versions and even on Android
+ * the DSDT is mostly sane. This tablet has 2 extra general purpose buttons
+ * in the button row with the power + volume-buttons labeled P and F.
+ * Use the x86-android-tablets infra to create a gpio-button device for these.
+ */
+static const struct x86_gpio_button cyberbook_t116_buttons[] __initconst = {
+	{
+		.button = {
+			.code = KEY_PROG1,
+			.active_low = true,
+			.desc = "prog1_key",
+			.type = EV_KEY,
+			.wakeup = false,
+			.debounce_interval = 50,
+		},
+		.chip = "INT33FF:00",
+		.pin = 30,
+	},
+	{
+		.button = {
+			.code = KEY_PROG2,
+			.active_low = true,
+			.desc = "prog2_key",
+			.type = EV_KEY,
+			.wakeup = false,
+			.debounce_interval = 50,
+		},
+		.chip = "INT33FF:03",
+		.pin = 48,
+	},
+};
+
+const struct x86_dev_info cyberbook_t116_info __initconst = {
+	.gpio_button = cyberbook_t116_buttons,
+	.gpio_button_count = ARRAY_SIZE(cyberbook_t116_buttons),
+};
+
 #define CZC_EC_EXTRA_PORT	0x68
 #define CZC_EC_ANDROID_KEYS	0x63
 
diff --git a/drivers/platform/x86/x86-android-tablets/x86-android-tablets.h b/drivers/platform/x86/x86-android-tablets/x86-android-tablets.h
index 8f04a052eada..e46e1128acc8 100644
--- a/drivers/platform/x86/x86-android-tablets/x86-android-tablets.h
+++ b/drivers/platform/x86/x86-android-tablets/x86-android-tablets.h
@@ -94,6 +94,7 @@ extern const struct x86_dev_info advantech_mica_071_info;
 extern const struct x86_dev_info asus_me176c_info;
 extern const struct x86_dev_info asus_tf103c_info;
 extern const struct x86_dev_info chuwi_hi8_info;
+extern const struct x86_dev_info cyberbook_t116_info;
 extern const struct x86_dev_info czc_p10t;
 extern const struct x86_dev_info lenovo_yogabook_x90_info;
 extern const struct x86_dev_info lenovo_yogabook_x91_info;