platform/x86: x86-android-tablets: Add Acer Iconia One 7 B1-750 data

The Acer Iconia One 7 B1-750 is a x86 ACPI tablet which ships with Android
x86 as factory OS. Its DSDT contains a bunch of I2C devices which are not
actually there, causing various resource conflicts. Enumeration of these
is skipped through the acpi_quirk_skip_i2c_client_enumeration().

Add support for manually instantiating the I2C + other devices which are
actually present on this tablet by adding the necessary device info to
the x86-android-tablets module.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230301092331.7038-2-hdegoede@redhat.com

diff --git a/drivers/platform/x86/x86-android-tablets.c b/drivers/platform/x86/x86-android-tablets.c
index 111b007..8405e1c 100644 (file)
--- a/drivers/platform/x86/x86-android-tablets.c
+++ b/drivers/platform/x86/x86-android-tablets.c
@@ -265,6 +265,88 @@ static struct gpiod_lookup_table int3496_gpo2_pin22_gpios = {
        },
 };
 
+static struct gpiod_lookup_table int3496_reference_gpios = {
+       .dev_id = "intel-int3496",
+       .table = {
+               GPIO_LOOKUP("INT33FC:01", 15, "vbus", GPIO_ACTIVE_HIGH),
+               GPIO_LOOKUP("INT33FC:02", 1, "mux", GPIO_ACTIVE_HIGH),
+               GPIO_LOOKUP("INT33FC:02", 18, "id", GPIO_ACTIVE_HIGH),
+               { }
+       },
+};
+
+/* Acer Iconia One 7 B1-750 has an Android factory img with everything hardcoded */
+static const char * const acer_b1_750_mount_matrix[] = {
+       "-1", "0", "0",
+       "0", "1", "0",
+       "0", "0", "1"
+};
+
+static const struct property_entry acer_b1_750_bma250e_props[] = {
+       PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", acer_b1_750_mount_matrix),
+       { }
+};
+
+static const struct software_node acer_b1_750_bma250e_node = {
+       .properties = acer_b1_750_bma250e_props,
+};
+
+static const struct x86_i2c_client_info acer_b1_750_i2c_clients[] __initconst = {
+       {
+               /* Novatek NVT-ts touchscreen */
+               .board_info = {
+                       .type = "NVT-ts",
+                       .addr = 0x34,
+                       .dev_name = "NVT-ts",
+               },
+               .adapter_path = "\\_SB_.I2C4",
+               .irq_data = {
+                       .type = X86_ACPI_IRQ_TYPE_GPIOINT,
+                       .chip = "INT33FC:02",
+                       .index = 3,
+                       .trigger = ACPI_EDGE_SENSITIVE,
+                       .polarity = ACPI_ACTIVE_LOW,
+               },
+       }, {
+               /* BMA250E accelerometer */
+               .board_info = {
+                       .type = "bma250e",
+                       .addr = 0x18,
+                       .swnode = &acer_b1_750_bma250e_node,
+               },
+               .adapter_path = "\\_SB_.I2C3",
+               .irq_data = {
+                       .type = X86_ACPI_IRQ_TYPE_GPIOINT,
+                       .chip = "INT33FC:02",
+                       .index = 25,
+                       .trigger = ACPI_LEVEL_SENSITIVE,
+                       .polarity = ACPI_ACTIVE_HIGH,
+               },
+       },
+};
+
+static struct gpiod_lookup_table acer_b1_750_goodix_gpios = {
+       .dev_id = "i2c-NVT-ts",
+       .table = {
+               GPIO_LOOKUP("INT33FC:01", 26, "reset", GPIO_ACTIVE_LOW),
+               { }
+       },
+};
+
+static struct gpiod_lookup_table * const acer_b1_750_gpios[] = {
+       &acer_b1_750_goodix_gpios,
+       &int3496_reference_gpios,
+       NULL
+};
+
+static const struct x86_dev_info acer_b1_750_info __initconst = {
+       .i2c_client_info = acer_b1_750_i2c_clients,
+       .i2c_client_count = ARRAY_SIZE(acer_b1_750_i2c_clients),
+       .pdev_info = int3496_pdevs,
+       .pdev_count = ARRAY_SIZE(int3496_pdevs),
+       .gpiod_lookup_tables = acer_b1_750_gpios,
+};
+
 /*
  * Advantech MICA-071
  * This is a standard Windows tablet, but it has an extra "quick launch" button
@@ -1298,17 +1380,8 @@ static const struct x86_i2c_client_info nextbook_ares8_i2c_clients[] __initconst
        },
 };
 
-static struct gpiod_lookup_table nextbook_ares8_int3496_gpios = {
-       .dev_id = "intel-int3496",
-       .table = {
-               GPIO_LOOKUP("INT33FC:02", 1, "mux", GPIO_ACTIVE_HIGH),
-               GPIO_LOOKUP("INT33FC:02", 18, "id", GPIO_ACTIVE_HIGH),
-               { }
-       },
-};
-
 static struct gpiod_lookup_table * const nextbook_ares8_gpios[] = {
-       &nextbook_ares8_int3496_gpios,
+       &int3496_reference_gpios,
        NULL
 };
 
@@ -1436,6 +1509,14 @@ static const struct x86_dev_info xiaomi_mipad2_info __initconst = {
 
 static const struct dmi_system_id x86_android_tablet_ids[] __initconst = {
        {
+               /* Acer Iconia One 7 B1-750 */
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "VESPA2"),
+               },
+               .driver_data = (void *)&acer_b1_750_info,
+       },
+       {
                /* Advantech MICA-071 */
                .matches = {
                        DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Advantech"),