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

diff --git a/drivers/platform/x86/x86-android-tablets.c b/drivers/platform/x86/x86-android-tablets.c
index fb257b5..d39da5f 100644 (file)
--- 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"),