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authorHans de Goede <hdegoede@redhat.com>2021-12-30 00:14:31 +0100
committerHans de Goede <hdegoede@redhat.com>2022-01-05 11:31:19 +0100
commitb40082d0b033486f8ee4eed5d38278b3164b0e8c (patch)
treefd2dd1a12c08abe424c5a1b7fbeaa845c318e80e /drivers/platform
parentf359c40bf872fc702efb9cf6aa8576613747580d (diff)
downloadlinux-b40082d0b033486f8ee4eed5d38278b3164b0e8c.tar.bz2
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: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20211229231431.437982-13-hdegoede@redhat.com
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/x86-android-tablets.c93
1 files changed, 92 insertions, 1 deletions
diff --git a/drivers/platform/x86/x86-android-tablets.c b/drivers/platform/x86/x86-android-tablets.c
index fb257b5811d3..d39da5fca6c5 100644
--- a/drivers/platform/x86/x86-android-tablets.c
+++ b/drivers/platform/x86/x86-android-tablets.c
@@ -491,6 +491,86 @@ static const struct x86_dev_info chuwi_hi8_info __initconst = {
};
/*
+ * 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
* a bunch of devices to be hidden.
@@ -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"),