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linux-7.2.3/drivers/platform/x86/x86-android-tablets/Kconfig

@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# X86 Android tablet support Kconfig
+#
+
+config X86_ANDROID_TABLETS
+	tristate "X86 Android tablet support"
+	depends on I2C && SPI && SERIAL_DEV_BUS
+	depends on GPIOLIB && PMIC_OPREGION
+	depends on ACPI && EFI && PCI
+	select NEW_LEDS
+	select LEDS_CLASS
+	select POWER_SUPPLY
+	help
+	  X86 tablets which ship with Android as (part of) the factory image
+	  typically have various problems with their DSDTs. The factory kernels
+	  shipped on these devices typically have device addresses and GPIOs
+	  hardcoded in the kernel, rather than specified in their DSDT.
+
+	  With the DSDT containing a random collection of devices which may or
+	  may not actually be present. This driver contains various fixes for
+	  such tablets, including instantiating kernel devices for devices which
+	  are missing from the DSDT.
+
+	  If you have a x86 Android tablet say Y or M here, for a generic x86
+	  distro configuration say M here.

linux-7.2.3/drivers/platform/x86/x86-android-tablets/Makefile

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# X86 Android tablet support Makefile
+#
+
+obj-$(CONFIG_X86_ANDROID_TABLETS) += vexia_atla10_ec.o
+obj-$(CONFIG_X86_ANDROID_TABLETS) += x86-android-tablets.o
+x86-android-tablets-y := core.o dmi.o shared-psy-info.o \
+			 acer.o asus.o lenovo.o other.o

linux-7.2.3/drivers/platform/x86/x86-android-tablets/acer.c

@@ -0,0 +1,247 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Board info for Acer X86 tablets which ship with Android as the factory image
+ * and which have broken DSDT tables. The factory kernels shipped on these
+ * devices typically have a bunch of things hardcoded, rather than specified
+ * in their DSDT.
+ *
+ * Copyright (C) 2021-2025 Hans de Goede <hansg@kernel.org>
+ */
+
+#include <linux/gpio/machine.h>
+#include <linux/gpio/property.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+
+#include "shared-psy-info.h"
+#include "x86-android-tablets.h"
+
+/* Acer Iconia One 8 A1-840 (non FHD version) */
+static const struct property_entry acer_a1_840_bq24190_props[] = {
+	PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_4v2_battery_node),
+	PROPERTY_ENTRY_BOOL("omit-battery-class"),
+	PROPERTY_ENTRY_BOOL("disable-reset"),
+	{ }
+};
+
+static const struct software_node acer_a1_840_bq24190_node = {
+	.properties = acer_a1_840_bq24190_props,
+};
+
+static const struct property_entry acer_a1_840_touchscreen_props[] = {
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 800),
+	PROPERTY_ENTRY_U32("touchscreen-size-y", 1280),
+	PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_LOW),
+	{ }
+};
+
+static const struct software_node acer_a1_840_touchscreen_node = {
+	.properties = acer_a1_840_touchscreen_props,
+};
+
+static const struct x86_i2c_client_info acer_a1_840_i2c_clients[] __initconst = {
+	{
+		/* BQ24297 charger IC */
+		.board_info = {
+			.type = "bq24297",
+			.addr = 0x6b,
+			.dev_name = "bq24297",
+			.swnode = &acer_a1_840_bq24190_node,
+			.platform_data = &bq24190_pdata,
+		},
+		.adapter_path = "\\_SB_.I2C1",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_GPIOINT,
+			.chip = "INT33FC:02",
+			.index = 2,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_LOW,
+			.con_id = "bq24297_irq",
+		},
+	}, {
+		/* MPU6515 sensors */
+		.board_info = {
+			.type = "mpu6515",
+			.addr = 0x69,
+			.dev_name = "mpu6515",
+		},
+		.adapter_path = "\\_SB_.I2C3",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_APIC,
+			.index = 0x47,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_HIGH,
+		},
+	}, {
+		/* FT5416 touchscreen controller */
+		.board_info = {
+			.type = "edt-ft5x06",
+			.addr = 0x38,
+			.dev_name = "ft5416",
+			.swnode = &acer_a1_840_touchscreen_node,
+		},
+		.adapter_path = "\\_SB_.I2C4",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_APIC,
+			.index = 0x45,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_HIGH,
+		},
+	}
+};
+
+static const struct property_entry acer_a1_840_int3496_props[] __initconst = {
+	PROPERTY_ENTRY_GPIO("mux-gpios", &baytrail_gpiochip_nodes[2], 1, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("id-gpios", &baytrail_gpiochip_nodes[2], 18, GPIO_ACTIVE_HIGH),
+	{ }
+};
+
+static const struct platform_device_info acer_a1_840_pdevs[] __initconst = {
+	{
+		/* For micro USB ID pin handling */
+		.name = "intel-int3496",
+		.id = PLATFORM_DEVID_NONE,
+		.properties = acer_a1_840_int3496_props,
+	},
+};
+
+/* Properties for the Dollar Cove TI PMIC battery MFD child used as fuel-gauge */
+static const struct property_entry acer_a1_840_fg_props[] = {
+	PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_4v2_battery_node),
+	PROPERTY_ENTRY_STRING_ARRAY_LEN("supplied-from", bq24190_psy, 1),
+	PROPERTY_ENTRY_GPIO("charged-gpios", &baytrail_gpiochip_nodes[2], 10, GPIO_ACTIVE_HIGH),
+	{ }
+};
+
+static struct device *acer_a1_840_fg_dev;
+static struct fwnode_handle *acer_a1_840_fg_node;
+
+static int __init acer_a1_840_init(struct device *dev)
+{
+	int ret;
+
+	acer_a1_840_fg_dev = bus_find_device_by_name(&platform_bus_type, NULL, "chtdc_ti_battery");
+	if (!acer_a1_840_fg_dev)
+		return dev_err_probe(dev, -EPROBE_DEFER, "getting chtdc_ti_battery dev\n");
+
+	acer_a1_840_fg_node = fwnode_create_software_node(acer_a1_840_fg_props, NULL);
+	if (IS_ERR(acer_a1_840_fg_node)) {
+		ret = PTR_ERR(acer_a1_840_fg_node);
+		goto err_put;
+	}
+
+	ret = device_add_software_node(acer_a1_840_fg_dev,
+				       to_software_node(acer_a1_840_fg_node));
+	if (ret)
+		goto err_put;
+
+	return 0;
+
+err_put:
+	fwnode_handle_put(acer_a1_840_fg_node);
+	acer_a1_840_fg_node = NULL;
+	put_device(acer_a1_840_fg_dev);
+	acer_a1_840_fg_dev = NULL;
+	return ret;
+}
+
+static void acer_a1_840_exit(void)
+{
+	device_remove_software_node(acer_a1_840_fg_dev);
+	/*
+	 * Skip fwnode_handle_put(acer_a1_840_fg_node), instead leak the node.
+	 * The intel_dc_ti_battery driver may still reference the strdup-ed
+	 * "supplied-from" string. This string will be free-ed if the node
+	 * is released.
+	 */
+	acer_a1_840_fg_node = NULL;
+	put_device(acer_a1_840_fg_dev);
+	acer_a1_840_fg_dev = NULL;
+}
+
+static const char * const acer_a1_840_modules[] __initconst = {
+	"bq24190_charger",	/* For the Vbus regulator for intel-int3496 */
+	NULL
+};
+
+const struct x86_dev_info acer_a1_840_info __initconst = {
+	.i2c_client_info = acer_a1_840_i2c_clients,
+	.i2c_client_count = ARRAY_SIZE(acer_a1_840_i2c_clients),
+	.pdev_info = acer_a1_840_pdevs,
+	.pdev_count = ARRAY_SIZE(acer_a1_840_pdevs),
+	.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
+	.swnode_group = generic_lipo_4v2_battery_swnodes,
+	.modules = acer_a1_840_modules,
+	.init = acer_a1_840_init,
+	.exit = acer_a1_840_exit,
+};
+
+/* Acer Iconia One 7 B1-750 has an Android factory image 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 property_entry acer_b1_750_novatek_props[] = {
+	PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_LOW),
+	{ }
+};
+
+static const struct software_node acer_b1_750_novatek_node = {
+	.properties = acer_b1_750_novatek_props,
+};
+
+static const struct x86_i2c_client_info acer_b1_750_i2c_clients[] __initconst = {
+	{
+		/* Novatek NVT-ts touchscreen */
+		.board_info = {
+			.type = "nt11205-ts",
+			.addr = 0x34,
+			.dev_name = "NVT-ts",
+			.swnode = &acer_b1_750_novatek_node,
+		},
+		.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,
+			.con_id = "NVT-ts_irq",
+		},
+	}, {
+		/* 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,
+			.con_id = "bma250e_irq",
+		},
+	},
+};
+
+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 = 1,
+	.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
+};

linux-7.2.3/drivers/platform/x86/x86-android-tablets/asus.c

@@ -0,0 +1,319 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Board info for Asus X86 tablets which ship with Android as the factory image
+ * and which have broken DSDT tables. The factory kernels shipped on these
+ * devices typically have a bunch of things hardcoded, rather than specified
+ * in their DSDT.
+ *
+ * Copyright (C) 2021-2023 Hans de Goede <hansg@kernel.org>
+ */
+
+#include <linux/gpio/machine.h>
+#include <linux/gpio/property.h>
+#include <linux/input-event-codes.h>
+#include <linux/platform_device.h>
+
+#include "shared-psy-info.h"
+#include "x86-android-tablets.h"
+
+/* Asus ME176C and TF103C tablets shared data */
+static const struct property_entry asus_me176c_tf103c_int3496_props[] __initconst = {
+	PROPERTY_ENTRY_GPIO("id-gpios", &baytrail_gpiochip_nodes[2], 22, GPIO_ACTIVE_HIGH),
+	{ }
+};
+
+static const struct platform_device_info asus_me176c_tf103c_pdevs[] __initconst = {
+	{
+		/* For micro USB ID pin handling */
+		.name = "intel-int3496",
+		.id = PLATFORM_DEVID_NONE,
+		.properties = asus_me176c_tf103c_int3496_props,
+	},
+};
+
+static const struct software_node asus_me176c_tf103c_gpio_keys_node = {
+	.name = "lid_sw",
+};
+
+static const struct property_entry asus_me176c_tf103c_lid_props[] = {
+	PROPERTY_ENTRY_U32("linux,input-type", EV_SW),
+	PROPERTY_ENTRY_U32("linux,code", SW_LID),
+	PROPERTY_ENTRY_STRING("label", "lid_sw"),
+	PROPERTY_ENTRY_GPIO("gpios", &baytrail_gpiochip_nodes[2], 12, GPIO_ACTIVE_LOW),
+	PROPERTY_ENTRY_U32("debounce-interval", 50),
+	PROPERTY_ENTRY_BOOL("wakeup-source"),
+	{ }
+};
+
+static const struct software_node asus_me176c_tf103c_lid_node = {
+	.parent = &asus_me176c_tf103c_gpio_keys_node,
+	.properties = asus_me176c_tf103c_lid_props,
+};
+
+static const struct software_node *asus_me176c_tf103c_lid_swnodes[] = {
+	&asus_me176c_tf103c_gpio_keys_node,
+	&asus_me176c_tf103c_lid_node,
+	NULL
+};
+
+/* Asus ME176C tablets have an Android factory image with everything hardcoded */
+static const char * const asus_me176c_accel_mount_matrix[] = {
+	"-1", "0", "0",
+	"0", "1", "0",
+	"0", "0", "1"
+};
+
+static const struct property_entry asus_me176c_accel_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", asus_me176c_accel_mount_matrix),
+	{ }
+};
+
+static const struct software_node asus_me176c_accel_node = {
+	.properties = asus_me176c_accel_props,
+};
+
+static const struct property_entry asus_me176c_bq24190_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY_LEN("supplied-from", tusb1211_chg_det_psy, 1),
+	PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_hv_4v35_battery_node),
+	PROPERTY_ENTRY_U32("ti,system-minimum-microvolt", 3600000),
+	PROPERTY_ENTRY_BOOL("omit-battery-class"),
+	PROPERTY_ENTRY_BOOL("disable-reset"),
+	{ }
+};
+
+static const struct software_node asus_me176c_bq24190_node = {
+	.properties = asus_me176c_bq24190_props,
+};
+
+static const struct property_entry asus_me176c_ug3105_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY_LEN("supplied-from", bq24190_psy, 1),
+	PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_hv_4v35_battery_node),
+	PROPERTY_ENTRY_U32("upisemi,rsns-microohm", 10000),
+	{ }
+};
+
+static const struct software_node asus_me176c_ug3105_node = {
+	.properties = asus_me176c_ug3105_props,
+};
+
+static const struct property_entry asus_me176c_touchscreen_props[] = {
+	PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[0], 60, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("irq-gpios", &baytrail_gpiochip_nodes[2], 28, GPIO_ACTIVE_HIGH),
+	{ }
+};
+
+static const struct software_node asus_me176c_touchscreen_node = {
+	.properties = asus_me176c_touchscreen_props,
+};
+
+static const struct x86_i2c_client_info asus_me176c_i2c_clients[] __initconst = {
+	{
+		/* bq24297 battery charger */
+		.board_info = {
+			.type = "bq24190",
+			.addr = 0x6b,
+			.dev_name = "bq24297",
+			.swnode = &asus_me176c_bq24190_node,
+			.platform_data = &bq24190_pdata,
+		},
+		.adapter_path = "\\_SB_.I2C1",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_PMIC,
+			.chip = "\\_SB_.I2C7.PMIC",
+			.domain = DOMAIN_BUS_WAKEUP,
+			.index = 0,
+		},
+	}, {
+		/* ug3105 battery monitor */
+		.board_info = {
+			.type = "ug3105",
+			.addr = 0x70,
+			.dev_name = "ug3105",
+			.swnode = &asus_me176c_ug3105_node,
+		},
+		.adapter_path = "\\_SB_.I2C1",
+	}, {
+		/* ak09911 compass */
+		.board_info = {
+			.type = "ak09911",
+			.addr = 0x0c,
+			.dev_name = "ak09911",
+		},
+		.adapter_path = "\\_SB_.I2C5",
+	}, {
+		/* kxtj21009 accelerometer */
+		.board_info = {
+			.type = "kxtj21009",
+			.addr = 0x0f,
+			.dev_name = "kxtj21009",
+			.swnode = &asus_me176c_accel_node,
+		},
+		.adapter_path = "\\_SB_.I2C5",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_APIC,
+			.index = 0x44,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_LOW,
+		},
+	}, {
+		/* goodix touchscreen */
+		.board_info = {
+			.type = "GDIX1001:00",
+			.addr = 0x14,
+			.dev_name = "goodix_ts",
+			.swnode = &asus_me176c_touchscreen_node,
+		},
+		.adapter_path = "\\_SB_.I2C6",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_APIC,
+			.index = 0x45,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_LOW,
+		},
+	},
+};
+
+static const struct x86_serdev_info asus_me176c_serdevs[] __initconst = {
+	{
+		.ctrl.acpi.hid = "80860F0A",
+		.ctrl.acpi.uid = "2",
+		.ctrl_devname = "serial0",
+		.serdev_hid = "BCM2E3A",
+	},
+};
+
+const struct x86_dev_info asus_me176c_info __initconst = {
+	.i2c_client_info = asus_me176c_i2c_clients,
+	.i2c_client_count = ARRAY_SIZE(asus_me176c_i2c_clients),
+	.pdev_info = asus_me176c_tf103c_pdevs,
+	.pdev_count = ARRAY_SIZE(asus_me176c_tf103c_pdevs),
+	.serdev_info = asus_me176c_serdevs,
+	.serdev_count = ARRAY_SIZE(asus_me176c_serdevs),
+	.gpio_button_swnodes = asus_me176c_tf103c_lid_swnodes,
+	.swnode_group = generic_lipo_hv_4v35_battery_swnodes,
+	.modules = bq24190_modules,
+	.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
+};
+
+/* Asus TF103C tablets have an Android factory image with everything hardcoded */
+static const char * const asus_tf103c_accel_mount_matrix[] = {
+	"0", "-1", "0",
+	"-1", "0", "0",
+	"0", "0", "1"
+};
+
+static const struct property_entry asus_tf103c_accel_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", asus_tf103c_accel_mount_matrix),
+	{ }
+};
+
+static const struct software_node asus_tf103c_accel_node = {
+	.properties = asus_tf103c_accel_props,
+};
+
+static const struct property_entry asus_tf103c_touchscreen_props[] = {
+	PROPERTY_ENTRY_STRING("compatible", "atmel,atmel_mxt_ts"),
+	{ }
+};
+
+static const struct software_node asus_tf103c_touchscreen_node = {
+	.properties = asus_tf103c_touchscreen_props,
+};
+
+static const struct property_entry asus_tf103c_bq24190_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY_LEN("supplied-from", tusb1211_chg_det_psy, 1),
+	PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_4v2_battery_node),
+	PROPERTY_ENTRY_U32("ti,system-minimum-microvolt", 3600000),
+	PROPERTY_ENTRY_BOOL("omit-battery-class"),
+	PROPERTY_ENTRY_BOOL("disable-reset"),
+	{ }
+};
+
+static const struct software_node asus_tf103c_bq24190_node = {
+	.properties = asus_tf103c_bq24190_props,
+};
+
+static const struct property_entry asus_tf103c_ug3105_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY_LEN("supplied-from", bq24190_psy, 1),
+	PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_4v2_battery_node),
+	PROPERTY_ENTRY_U32("upisemi,rsns-microohm", 5000),
+	{ }
+};
+
+static const struct software_node asus_tf103c_ug3105_node = {
+	.properties = asus_tf103c_ug3105_props,
+};
+
+static const struct x86_i2c_client_info asus_tf103c_i2c_clients[] __initconst = {
+	{
+		/* bq24297 battery charger */
+		.board_info = {
+			.type = "bq24190",
+			.addr = 0x6b,
+			.dev_name = "bq24297",
+			.swnode = &asus_tf103c_bq24190_node,
+			.platform_data = &bq24190_pdata,
+		},
+		.adapter_path = "\\_SB_.I2C1",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_PMIC,
+			.chip = "\\_SB_.I2C7.PMIC",
+			.domain = DOMAIN_BUS_WAKEUP,
+			.index = 0,
+		},
+	}, {
+		/* ug3105 battery monitor */
+		.board_info = {
+			.type = "ug3105",
+			.addr = 0x70,
+			.dev_name = "ug3105",
+			.swnode = &asus_tf103c_ug3105_node,
+		},
+		.adapter_path = "\\_SB_.I2C1",
+	}, {
+		/* ak09911 compass */
+		.board_info = {
+			.type = "ak09911",
+			.addr = 0x0c,
+			.dev_name = "ak09911",
+		},
+		.adapter_path = "\\_SB_.I2C5",
+	}, {
+		/* kxtj21009 accelerometer */
+		.board_info = {
+			.type = "kxtj21009",
+			.addr = 0x0f,
+			.dev_name = "kxtj21009",
+			.swnode = &asus_tf103c_accel_node,
+		},
+		.adapter_path = "\\_SB_.I2C5",
+	}, {
+		/* atmel touchscreen */
+		.board_info = {
+			.type = "atmel_mxt_ts",
+			.addr = 0x4a,
+			.dev_name = "atmel_mxt_ts",
+			.swnode = &asus_tf103c_touchscreen_node,
+		},
+		.adapter_path = "\\_SB_.I2C6",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_GPIOINT,
+			.chip = "INT33FC:02",
+			.index = 28,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_LOW,
+			.con_id = "atmel_mxt_ts_irq",
+		},
+	},
+};
+
+const struct x86_dev_info asus_tf103c_info __initconst = {
+	.i2c_client_info = asus_tf103c_i2c_clients,
+	.i2c_client_count = ARRAY_SIZE(asus_tf103c_i2c_clients),
+	.pdev_info = asus_me176c_tf103c_pdevs,
+	.pdev_count = ARRAY_SIZE(asus_me176c_tf103c_pdevs),
+	.gpio_button_swnodes = asus_me176c_tf103c_lid_swnodes,
+	.swnode_group = generic_lipo_4v2_battery_swnodes,
+	.modules = bq24190_modules,
+	.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
+};

linux-7.2.3/drivers/platform/x86/x86-android-tablets/core.c

@@ -0,0 +1,623 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * DMI based code to deal with broken DSDTs on X86 tablets which ship with
+ * Android as (part of) the factory image. The factory kernels shipped on these
+ * devices typically have a bunch of things hardcoded, rather than specified
+ * in their DSDT.
+ *
+ * Copyright (C) 2021-2023 Hans de Goede <hansg@kernel.org>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/acpi.h>
+#include <linux/bug.h>
+#include <linux/device.h>
+#include <linux/dmi.h>
+#include <linux/fwnode.h>
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/machine.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/serdev.h>
+#include <linux/string.h>
+
+#include "x86-android-tablets.h"
+#include "../serdev_helpers.h"
+
+static struct platform_device *x86_android_tablet_device;
+
+/*
+ * This helper allows getting a GPIO descriptor *before* the actual device
+ * consuming it has been instantiated. This function MUST only be used to
+ * handle this special case such as, e.g.:
+ *
+ * 1. Getting an IRQ from a GPIO for i2c_board_info.irq which is passed to
+ * i2c_client_new() to instantiate i2c_client-s; or
+ * 2. Calling desc_to_gpio() to get an old style GPIO number for gpio-keys
+ * platform_data which still uses old style GPIO numbers.
+ *
+ * Since the consuming device has not been instantiated yet a dynamic lookup
+ * is generated using the special x86_android_tablet device for dev_id.
+ *
+ * For normal GPIO lookups a standard static struct gpiod_lookup_table MUST be used.
+ */
+int x86_android_tablet_get_gpiod(const char *chip, int pin, const char *con_id,
+				 bool active_low, enum gpiod_flags dflags,
+				 struct gpio_desc **desc)
+{
+	struct gpiod_lookup_table *lookup;
+	struct gpio_desc *gpiod;
+
+	lookup = kzalloc_flex(*lookup, table, 2);
+	if (!lookup)
+		return -ENOMEM;
+
+	lookup->dev_id = KBUILD_MODNAME;
+	lookup->table[0] =
+		GPIO_LOOKUP(chip, pin, con_id, active_low ? GPIO_ACTIVE_LOW : GPIO_ACTIVE_HIGH);
+
+	gpiod_add_lookup_table(lookup);
+	gpiod = devm_gpiod_get(&x86_android_tablet_device->dev, con_id, dflags);
+	gpiod_remove_lookup_table(lookup);
+	kfree(lookup);
+
+	if (IS_ERR(gpiod)) {
+		pr_err("error %ld getting GPIO %s %d\n", PTR_ERR(gpiod), chip, pin);
+		return PTR_ERR(gpiod);
+	}
+
+	if (desc)
+		*desc = gpiod;
+
+	return 0;
+}
+
+int x86_acpi_irq_helper_get(const struct x86_acpi_irq_data *data)
+{
+	struct irq_fwspec fwspec = { };
+	struct irq_domain *domain;
+	struct acpi_device *adev;
+	struct gpio_desc *gpiod;
+	unsigned int irq_type;
+	acpi_handle handle;
+	acpi_status status;
+	int irq, ret;
+
+	switch (data->type) {
+	case X86_ACPI_IRQ_TYPE_APIC:
+		/*
+		 * The DSDT may already reference the GSI in a device skipped by
+		 * acpi_quirk_skip_i2c_client_enumeration(). Unregister the GSI
+		 * to avoid -EBUSY errors in this case.
+		 */
+		acpi_unregister_gsi(data->index);
+		irq = acpi_register_gsi(NULL, data->index, data->trigger, data->polarity);
+		if (irq < 0)
+			pr_err("error %d getting APIC IRQ %d\n", irq, data->index);
+
+		return irq;
+	case X86_ACPI_IRQ_TYPE_GPIOINT:
+		/* Like acpi_dev_gpio_irq_get(), but without parsing ACPI resources */
+		ret = x86_android_tablet_get_gpiod(data->chip, data->index, data->con_id,
+						   false, GPIOD_ASIS, &gpiod);
+		if (ret)
+			return ret;
+
+		irq = gpiod_to_irq(gpiod);
+		if (irq < 0) {
+			pr_err("error %d getting IRQ %s %d\n", irq, data->chip, data->index);
+			return irq;
+		}
+
+		irq_type = acpi_dev_get_irq_type(data->trigger, data->polarity);
+		if (irq_type != IRQ_TYPE_NONE && irq_type != irq_get_trigger_type(irq))
+			irq_set_irq_type(irq, irq_type);
+
+		if (data->free_gpio)
+			devm_gpiod_put(&x86_android_tablet_device->dev, gpiod);
+
+		return irq;
+	case X86_ACPI_IRQ_TYPE_PMIC:
+		status = acpi_get_handle(NULL, data->chip, &handle);
+		if (ACPI_FAILURE(status)) {
+			pr_err("error could not get %s handle\n", data->chip);
+			return -ENODEV;
+		}
+
+		adev = acpi_fetch_acpi_dev(handle);
+		if (!adev) {
+			pr_err("error could not get %s adev\n", data->chip);
+			return -ENODEV;
+		}
+
+		fwspec.fwnode = acpi_fwnode_handle(adev);
+		domain = irq_find_matching_fwspec(&fwspec, data->domain);
+		if (!domain) {
+			pr_err("error could not find IRQ domain for %s\n", data->chip);
+			return -ENODEV;
+		}
+
+		return irq_create_mapping(domain, data->index);
+	default:
+		return 0;
+	}
+}
+
+static int i2c_client_count;
+static int spi_dev_count;
+static int pdev_count;
+static int serdev_count;
+static struct i2c_client **i2c_clients;
+static struct spi_device **spi_devs;
+static struct platform_device **pdevs;
+static struct serdev_device **serdevs;
+static const struct software_node **gpio_button_swnodes;
+static const struct software_node **swnode_group;
+static const struct software_node **gpiochip_node_group;
+static void (*exit_handler)(void);
+
+static __init struct i2c_adapter *
+get_i2c_adap_by_handle(const struct x86_i2c_client_info *client_info)
+{
+	acpi_handle handle;
+	acpi_status status;
+
+	status = acpi_get_handle(NULL, client_info->adapter_path, &handle);
+	if (ACPI_FAILURE(status)) {
+		pr_err("Error could not get %s handle\n", client_info->adapter_path);
+		return NULL;
+	}
+
+	return i2c_acpi_find_adapter_by_handle(handle);
+}
+
+static __init int match_parent(struct device *dev, const void *data)
+{
+	return dev->parent == data;
+}
+
+static __init struct i2c_adapter *
+get_i2c_adap_by_pci_parent(const struct x86_i2c_client_info *client_info)
+{
+	struct i2c_adapter *adap = NULL;
+	struct device *pdev, *adap_dev;
+
+	pdev = bus_find_device_by_name(&pci_bus_type, NULL, client_info->adapter_path);
+	if (!pdev) {
+		pr_err("Error could not find %s PCI device\n", client_info->adapter_path);
+		return NULL;
+	}
+
+	adap_dev = bus_find_device(&i2c_bus_type, NULL, pdev, match_parent);
+	if (adap_dev) {
+		adap = i2c_verify_adapter(adap_dev);
+		if (!adap)
+			put_device(adap_dev);
+	}
+
+	put_device(pdev);
+
+	return adap;
+}
+
+static __init int x86_instantiate_i2c_client(const struct x86_dev_info *dev_info,
+					     int idx)
+{
+	const struct x86_i2c_client_info *client_info = &dev_info->i2c_client_info[idx];
+	struct i2c_board_info board_info = client_info->board_info;
+	struct i2c_adapter *adap;
+
+	board_info.irq = x86_acpi_irq_helper_get(&client_info->irq_data);
+	if (board_info.irq < 0)
+		return board_info.irq;
+
+	if (dev_info->use_pci)
+		adap = get_i2c_adap_by_pci_parent(client_info);
+	else
+		adap = get_i2c_adap_by_handle(client_info);
+
+	if (!adap) {
+		pr_err("error could not get %s adapter\n", client_info->adapter_path);
+		return -ENODEV;
+	}
+
+	i2c_clients[idx] = i2c_new_client_device(adap, &board_info);
+	put_device(&adap->dev);
+	if (IS_ERR(i2c_clients[idx]))
+		return dev_err_probe(&adap->dev, PTR_ERR(i2c_clients[idx]),
+				      "creating I2C-client %d\n", idx);
+
+	return 0;
+}
+
+static __init int x86_instantiate_spi_dev(const struct x86_dev_info *dev_info, int idx)
+{
+	const struct x86_spi_dev_info *spi_dev_info = &dev_info->spi_dev_info[idx];
+	struct spi_board_info board_info = spi_dev_info->board_info;
+	struct spi_controller *controller;
+	struct acpi_device *adev;
+	acpi_handle handle;
+	acpi_status status;
+
+	board_info.irq = x86_acpi_irq_helper_get(&spi_dev_info->irq_data);
+	if (board_info.irq < 0)
+		return board_info.irq;
+
+	status = acpi_get_handle(NULL, spi_dev_info->ctrl_path, &handle);
+	if (ACPI_FAILURE(status)) {
+		pr_err("Error could not get %s handle\n", spi_dev_info->ctrl_path);
+		return -ENODEV;
+	}
+
+	adev = acpi_fetch_acpi_dev(handle);
+	if (!adev) {
+		pr_err("Error could not get adev for %s\n", spi_dev_info->ctrl_path);
+		return -ENODEV;
+	}
+
+	controller = acpi_spi_find_controller_by_adev(adev);
+	if (!controller) {
+		pr_err("Error could not get SPI controller for %s\n", spi_dev_info->ctrl_path);
+		return -ENODEV;
+	}
+
+	spi_devs[idx] = spi_new_device(controller, &board_info);
+	put_device(&controller->dev);
+	if (!spi_devs[idx])
+		return -ENOMEM;
+
+	return 0;
+}
+
+static __init struct device *
+get_serdev_controller_by_pci_parent(const struct x86_serdev_info *info)
+{
+	struct pci_dev *pdev;
+
+	pdev = pci_get_domain_bus_and_slot(0, 0, info->ctrl.pci.devfn);
+	if (!pdev) {
+		pr_err("error could not get PCI serdev at devfn 0x%02x\n", info->ctrl.pci.devfn);
+		return ERR_PTR(-ENODEV);
+	}
+
+	/* This puts our reference on pdev and returns a ref on the ctrl */
+	return get_serdev_controller_from_parent(&pdev->dev, 0, info->ctrl_devname);
+}
+
+static __init int x86_instantiate_serdev(const struct x86_dev_info *dev_info, int idx)
+{
+	const struct x86_serdev_info *info = &dev_info->serdev_info[idx];
+	struct acpi_device *serdev_adev;
+	struct serdev_device *serdev;
+	struct device *ctrl_dev;
+	int ret = -ENODEV;
+
+	if (dev_info->use_pci)
+		ctrl_dev = get_serdev_controller_by_pci_parent(info);
+	else
+		ctrl_dev = get_serdev_controller(info->ctrl.acpi.hid, info->ctrl.acpi.uid,
+						 0, info->ctrl_devname);
+	if (IS_ERR(ctrl_dev))
+		return PTR_ERR(ctrl_dev);
+
+	serdev_adev = acpi_dev_get_first_match_dev(info->serdev_hid, NULL, -1);
+	if (!serdev_adev) {
+		pr_err("error could not get %s serdev adev\n", info->serdev_hid);
+		goto put_ctrl_dev;
+	}
+
+	serdev = serdev_device_alloc(to_serdev_controller(ctrl_dev));
+	if (!serdev) {
+		ret = -ENOMEM;
+		goto put_serdev_adev;
+	}
+
+	ACPI_COMPANION_SET(&serdev->dev, serdev_adev);
+	acpi_device_set_enumerated(serdev_adev);
+
+	ret = serdev_device_add(serdev);
+	if (ret) {
+		dev_err(&serdev->dev, "error %d adding serdev\n", ret);
+		serdev_device_put(serdev);
+		goto put_serdev_adev;
+	}
+
+	serdevs[idx] = serdev;
+
+put_serdev_adev:
+	acpi_dev_put(serdev_adev);
+put_ctrl_dev:
+	put_device(ctrl_dev);
+	return ret;
+}
+
+const struct software_node baytrail_gpiochip_nodes[] = {
+	{ .name = "INT33FC:00" },
+	{ .name = "INT33FC:01" },
+	{ .name = "INT33FC:02" },
+};
+
+static const struct software_node *baytrail_gpiochip_node_group[] = {
+	&baytrail_gpiochip_nodes[0],
+	&baytrail_gpiochip_nodes[1],
+	&baytrail_gpiochip_nodes[2],
+	NULL
+};
+
+const struct software_node cherryview_gpiochip_nodes[] = {
+	{ .name = "INT33FF:00" },
+	{ .name = "INT33FF:01" },
+	{ .name = "INT33FF:02" },
+	{ .name = "INT33FF:03" },
+};
+
+static const struct software_node *cherryview_gpiochip_node_group[] = {
+	&cherryview_gpiochip_nodes[0],
+	&cherryview_gpiochip_nodes[1],
+	&cherryview_gpiochip_nodes[2],
+	&cherryview_gpiochip_nodes[3],
+	NULL
+};
+
+static void gpio_secondary_unset(void *data)
+{
+	struct device *dev = data;
+
+	set_secondary_fwnode(dev, NULL);
+}
+
+static void gpio_secondary_unregister_node_group(void *data)
+{
+	const struct software_node **nodes = data;
+
+	software_node_unregister_node_group(nodes);
+}
+
+static int gpio_secondary_fwnode_init(struct device *parent)
+{
+	const struct software_node *const *swnode;
+	struct fwnode_handle *fwnode;
+	int ret;
+
+	if (!gpiochip_node_group)
+		return 0;
+
+	ret = software_node_register_node_group(gpiochip_node_group);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(parent,
+				       gpio_secondary_unregister_node_group,
+				       gpiochip_node_group);
+	if (ret)
+		return ret;
+
+	for (swnode = gpiochip_node_group; *swnode; swnode++) {
+		struct device *dev __free(put_device) =
+				acpi_bus_find_device_by_name((*swnode)->name);
+		if (!dev)
+			return dev_err_probe(parent,
+					     -ENODEV, "Failed to find the required GPIO controller: %s\n",
+					     (*swnode)->name);
+
+		fwnode = software_node_fwnode(*swnode);
+		if (WARN_ON(!fwnode))
+			return -ENOENT;
+
+		set_secondary_fwnode(dev, fwnode);
+
+		ret = devm_add_action_or_reset(parent, gpio_secondary_unset, dev);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static void x86_android_tablet_remove(struct platform_device *pdev)
+{
+	int i;
+
+	for (i = serdev_count - 1; i >= 0; i--) {
+		if (serdevs[i])
+			serdev_device_remove(serdevs[i]);
+	}
+
+	kfree(serdevs);
+
+	for (i = pdev_count - 1; i >= 0; i--)
+		platform_device_unregister(pdevs[i]);
+
+	kfree(pdevs);
+
+	for (i = spi_dev_count - 1; i >= 0; i--)
+		spi_unregister_device(spi_devs[i]);
+
+	kfree(spi_devs);
+
+	for (i = i2c_client_count - 1; i >= 0; i--)
+		i2c_unregister_device(i2c_clients[i]);
+
+	kfree(i2c_clients);
+
+	if (exit_handler)
+		exit_handler();
+
+	software_node_unregister_node_group(gpio_button_swnodes);
+	software_node_unregister_node_group(swnode_group);
+}
+
+static __init int x86_android_tablet_probe(struct platform_device *pdev)
+{
+	const struct x86_dev_info *dev_info;
+	const struct dmi_system_id *id;
+	int i, ret = 0;
+
+	id = dmi_first_match(x86_android_tablet_ids);
+	if (!id)
+		return -ENODEV;
+
+	dev_info = id->driver_data;
+	/* Allow x86_android_tablet_device use before probe() exits */
+	x86_android_tablet_device = pdev;
+
+	/*
+	 * Since this runs from module_init() it cannot use -EPROBE_DEFER,
+	 * instead pre-load any modules which are listed as requirements.
+	 */
+	for (i = 0; dev_info->modules && dev_info->modules[i]; i++)
+		request_module(dev_info->modules[i]);
+
+	switch (dev_info->gpiochip_type) {
+	case X86_GPIOCHIP_BAYTRAIL:
+		gpiochip_node_group = baytrail_gpiochip_node_group;
+		break;
+	case X86_GPIOCHIP_CHERRYVIEW:
+		gpiochip_node_group = cherryview_gpiochip_node_group;
+		break;
+	case X86_GPIOCHIP_UNSPECIFIED:
+		gpiochip_node_group = NULL;
+		break;
+	}
+
+	ret = gpio_secondary_fwnode_init(&pdev->dev);
+	if (ret) {
+		x86_android_tablet_remove(pdev);
+		return ret;
+	}
+
+	ret = software_node_register_node_group(dev_info->swnode_group);
+	if (ret) {
+		x86_android_tablet_remove(pdev);
+		return ret;
+	}
+	swnode_group = dev_info->swnode_group;
+
+	if (dev_info->init) {
+		ret = dev_info->init(&pdev->dev);
+		if (ret < 0) {
+			x86_android_tablet_remove(pdev);
+			return ret;
+		}
+		exit_handler = dev_info->exit;
+	}
+
+	i2c_clients = kzalloc_objs(*i2c_clients, dev_info->i2c_client_count);
+	if (!i2c_clients) {
+		x86_android_tablet_remove(pdev);
+		return -ENOMEM;
+	}
+
+	i2c_client_count = dev_info->i2c_client_count;
+	for (i = 0; i < i2c_client_count; i++) {
+		ret = x86_instantiate_i2c_client(dev_info, i);
+		if (ret < 0) {
+			x86_android_tablet_remove(pdev);
+			return ret;
+		}
+	}
+
+	spi_devs = kzalloc_objs(*spi_devs, dev_info->spi_dev_count);
+	if (!spi_devs) {
+		x86_android_tablet_remove(pdev);
+		return -ENOMEM;
+	}
+
+	spi_dev_count = dev_info->spi_dev_count;
+	for (i = 0; i < spi_dev_count; i++) {
+		ret = x86_instantiate_spi_dev(dev_info, i);
+		if (ret < 0) {
+			x86_android_tablet_remove(pdev);
+			return ret;
+		}
+	}
+
+	/* + 1 to make space for the (optional) gpio_keys_button platform device */
+	pdevs = kzalloc_objs(*pdevs, dev_info->pdev_count + 1);
+	if (!pdevs) {
+		x86_android_tablet_remove(pdev);
+		return -ENOMEM;
+	}
+
+	pdev_count = dev_info->pdev_count;
+	for (i = 0; i < pdev_count; i++) {
+		pdevs[i] = platform_device_register_full(&dev_info->pdev_info[i]);
+		if (IS_ERR(pdevs[i])) {
+			ret = PTR_ERR(pdevs[i]);
+			x86_android_tablet_remove(pdev);
+			return ret;
+		}
+	}
+
+	serdevs = kzalloc_objs(*serdevs, dev_info->serdev_count);
+	if (!serdevs) {
+		x86_android_tablet_remove(pdev);
+		return -ENOMEM;
+	}
+
+	serdev_count = dev_info->serdev_count;
+	for (i = 0; i < serdev_count; i++) {
+		ret = x86_instantiate_serdev(dev_info, i);
+		if (ret < 0) {
+			x86_android_tablet_remove(pdev);
+			return ret;
+		}
+	}
+
+	if (dev_info->gpio_button_swnodes) {
+		struct platform_device_info button_info = {
+			.name = "gpio-keys",
+			.id = PLATFORM_DEVID_AUTO,
+		};
+
+		ret = software_node_register_node_group(dev_info->gpio_button_swnodes);
+		if (ret < 0) {
+			x86_android_tablet_remove(pdev);
+			return ret;
+		}
+
+		gpio_button_swnodes = dev_info->gpio_button_swnodes;
+
+		button_info.fwnode = software_node_fwnode(dev_info->gpio_button_swnodes[0]);
+		pdevs[pdev_count] = platform_device_register_full(&button_info);
+		if (IS_ERR(pdevs[pdev_count])) {
+			ret = PTR_ERR(pdevs[pdev_count]);
+			x86_android_tablet_remove(pdev);
+			return ret;
+		}
+		pdev_count++;
+	}
+
+	return 0;
+}
+
+static struct platform_driver x86_android_tablet_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+	},
+	.remove = x86_android_tablet_remove,
+};
+
+static int __init x86_android_tablet_init(void)
+{
+	x86_android_tablet_device = platform_create_bundle(&x86_android_tablet_driver,
+						   x86_android_tablet_probe,
+						   NULL, 0, NULL, 0);
+
+	return PTR_ERR_OR_ZERO(x86_android_tablet_device);
+}
+module_init(x86_android_tablet_init);
+
+static void __exit x86_android_tablet_exit(void)
+{
+	platform_device_unregister(x86_android_tablet_device);
+	platform_driver_unregister(&x86_android_tablet_driver);
+}
+module_exit(x86_android_tablet_exit);
+
+MODULE_AUTHOR("Hans de Goede <hansg@kernel.org>");
+MODULE_DESCRIPTION("X86 Android tablets DSDT fixups driver");
+MODULE_LICENSE("GPL");

linux-7.2.3/drivers/platform/x86/x86-android-tablets/dmi.c

@@ -0,0 +1,233 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * DMI based code to deal with broken DSDTs on X86 tablets which ship with
+ * Android as (part of) the factory image. The factory kernels shipped on these
+ * devices typically have a bunch of things hardcoded, rather than specified
+ * in their DSDT.
+ *
+ * Copyright (C) 2021-2023 Hans de Goede <hansg@kernel.org>
+ */
+
+#include <linux/dmi.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include "x86-android-tablets.h"
+
+const struct dmi_system_id x86_android_tablet_ids[] __initconst = {
+	{
+		/* Acer Iconia One 8 A1-840 (non FHD version) */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "BayTrail"),
+			/* Above strings are too generic also match BIOS date */
+			DMI_MATCH(DMI_BIOS_DATE, "04/01/2014"),
+		},
+		.driver_data = (void *)&acer_a1_840_info,
+	},
+	{
+		/* 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"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "MICA-071"),
+		},
+		.driver_data = (void *)&advantech_mica_071_info,
+	},
+	{
+		/* Asus MeMO Pad 7 ME176C */
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ME176C"),
+		},
+		.driver_data = (void *)&asus_me176c_info,
+	},
+	{
+		/* Asus TF103C */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TF103C"),
+		},
+		.driver_data = (void *)&asus_tf103c_info,
+	},
+	{
+		/* Chuwi Hi8 (CWI509) */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Hampoo"),
+			DMI_MATCH(DMI_BOARD_NAME, "BYT-PA03C"),
+			DMI_MATCH(DMI_SYS_VENDOR, "ilife"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "S806"),
+		},
+		.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 = {
+			DMI_MATCH(DMI_SYS_VENDOR, "CZC"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "ODEON*TPC-10"),
+		},
+		.driver_data = (void *)&czc_p10t,
+	},
+	{
+		/* CZC P10T variant */
+		.ident = "ViewSonic ViewPad 10",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ViewSonic"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "VPAD10"),
+		},
+		.driver_data = (void *)&czc_p10t,
+	},
+	{
+		/* Lenovo Yoga Book X90F / X90L */
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
+		},
+		.driver_data = (void *)&lenovo_yogabook_x90_info,
+	},
+	{
+		/* Lenovo Yoga Book X91F / X91L */
+		.matches = {
+			/* Inexact match to match F + L versions */
+			DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X91"),
+		},
+		.driver_data = (void *)&lenovo_yogabook_x91_info,
+	},
+	{
+		/*
+		 * Lenovo Yoga Tablet 2 Pro 1380F/L (13")
+		 * This has more or less the same BIOS as the 830F/L or 1050F/L
+		 * (8" and 10") below, but unlike the 8"/10" models which share
+		 * the same mainboard this model has a different mainboard.
+		 * This match for the 13" model MUST come before the 8" + 10"
+		 * match since that one will also match the 13" model!
+		 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
+			DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
+			/* Full match so as to NOT match the 830/1050 BIOS */
+			DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21.X64.0005.R00.1504101516"),
+		},
+		.driver_data = (void *)&lenovo_yoga_tab2_1380_info,
+	},
+	{
+		/*
+		 * Lenovo Yoga Tablet 2 830F/L or 1050F/L
+		 * The 8" and 10" Lenovo Yoga Tablet 2 use the same mainboard.
+		 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
+			DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
+			/* Partial match on beginning of BIOS version */
+			DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
+		},
+		.driver_data = (void *)&lenovo_yoga_tab2_830_1050_info,
+	},
+	{
+		/* Lenovo Yoga Tab 3 Pro YT3-X90F */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
+		},
+		.driver_data = (void *)&lenovo_yt3_info,
+	},
+	{
+		/* Medion Lifetab S10346 */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
+			/* Above strings are much too generic, also match on BIOS date */
+			DMI_MATCH(DMI_BIOS_DATE, "10/22/2015"),
+		},
+		.driver_data = (void *)&medion_lifetab_s10346_info,
+	},
+	{
+		/* Nextbook Ares 8 (BYT version) */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "M890BAP"),
+		},
+		.driver_data = (void *)&nextbook_ares8_info,
+	},
+	{
+		/* Nextbook Ares 8A (CHT version) */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "CherryTrail"),
+			DMI_MATCH(DMI_BIOS_VERSION, "M882"),
+		},
+		.driver_data = (void *)&nextbook_ares8a_info,
+	},
+	{
+		/* Peaq C1010 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "PEAQ"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "PEAQ PMM C1010 MD99187"),
+		},
+		.driver_data = (void *)&peaq_c1010_info,
+	},
+	{
+		/* Vexia Edu Atla 10 tablet 5V version */
+		.matches = {
+			/* Having all 3 of these not set is somewhat unique */
+			DMI_MATCH(DMI_SYS_VENDOR, "To be filled by O.E.M."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "To be filled by O.E.M."),
+			DMI_MATCH(DMI_BOARD_NAME, "To be filled by O.E.M."),
+			/* Above strings are too generic, also match on BIOS date */
+			DMI_MATCH(DMI_BIOS_DATE, "05/14/2015"),
+		},
+		.driver_data = (void *)&vexia_edu_atla10_5v_info,
+	},
+	{
+		/* Vexia Edu Atla 10 tablet 9V version */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
+			/* Above strings are too generic, also match on BIOS date */
+			DMI_MATCH(DMI_BIOS_DATE, "08/25/2014"),
+		},
+		.driver_data = (void *)&vexia_edu_atla10_9v_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"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
+		},
+		.driver_data = (void *)&xiaomi_mipad2_info,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(dmi, x86_android_tablet_ids);

linux-7.2.3/drivers/platform/x86/x86-android-tablets/other.c

@@ -0,0 +1,883 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * DMI based code to deal with broken DSDTs on X86 tablets which ship with
+ * Android as (part of) the factory image. The factory kernels shipped on these
+ * devices typically have a bunch of things hardcoded, rather than specified
+ * in their DSDT.
+ *
+ * Copyright (C) 2021-2023 Hans de Goede <hansg@kernel.org>
+ */
+
+#include <linux/acpi.h>
+#include <linux/gpio/machine.h>
+#include <linux/gpio/property.h>
+#include <linux/input-event-codes.h>
+#include <linux/leds.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/pwm.h>
+
+#include <dt-bindings/leds/common.h>
+
+#include "shared-psy-info.h"
+#include "x86-android-tablets.h"
+
+/*
+ * 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-keys device for this.
+ */
+static const struct software_node advantech_mica_071_gpio_keys_node = {
+	.name = "prog1_key",
+};
+
+static const struct property_entry advantech_mica_071_prog1_key_props[] = {
+	PROPERTY_ENTRY_U32("linux,code", KEY_PROG1),
+	PROPERTY_ENTRY_STRING("label", "prog1_key"),
+	PROPERTY_ENTRY_GPIO("gpios", &baytrail_gpiochip_nodes[0], 2, GPIO_ACTIVE_LOW),
+	PROPERTY_ENTRY_U32("debounce-interval", 50),
+	{ }
+};
+
+static const struct software_node advantech_mica_071_prog1_key_node = {
+	.parent = &advantech_mica_071_gpio_keys_node,
+	.properties = advantech_mica_071_prog1_key_props,
+};
+
+static const struct software_node *advantech_mica_071_button_swnodes[] = {
+	&advantech_mica_071_gpio_keys_node,
+	&advantech_mica_071_prog1_key_node,
+	NULL
+};
+
+const struct x86_dev_info advantech_mica_071_info __initconst = {
+	.gpio_button_swnodes = advantech_mica_071_button_swnodes,
+	.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
+};
+
+/*
+ * When booted with the BIOS set to Android mode the Chuwi Hi8 (CWI509) DSDT
+ * contains a whole bunch of bogus ACPI I2C devices and is missing entries
+ * for the touchscreen and the accelerometer.
+ */
+static const struct property_entry chuwi_hi8_gsl1680_props[] = {
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 1665),
+	PROPERTY_ENTRY_U32("touchscreen-size-y", 1140),
+	PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"),
+	PROPERTY_ENTRY_BOOL("silead,home-button"),
+	PROPERTY_ENTRY_STRING("firmware-name", "gsl1680-chuwi-hi8.fw"),
+	{ }
+};
+
+static const struct software_node chuwi_hi8_gsl1680_node = {
+	.properties = chuwi_hi8_gsl1680_props,
+};
+
+static const char * const chuwi_hi8_mount_matrix[] = {
+	"1", "0", "0",
+	"0", "-1", "0",
+	"0", "0", "1"
+};
+
+static const struct property_entry chuwi_hi8_bma250e_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", chuwi_hi8_mount_matrix),
+	{ }
+};
+
+static const struct software_node chuwi_hi8_bma250e_node = {
+	.properties = chuwi_hi8_bma250e_props,
+};
+
+static const struct x86_i2c_client_info chuwi_hi8_i2c_clients[] __initconst = {
+	{
+		/* Silead touchscreen */
+		.board_info = {
+			.type = "gsl1680",
+			.addr = 0x40,
+			.swnode = &chuwi_hi8_gsl1680_node,
+		},
+		.adapter_path = "\\_SB_.I2C4",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_APIC,
+			.index = 0x44,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_HIGH,
+		},
+	}, {
+		/* BMA250E accelerometer */
+		.board_info = {
+			.type = "bma250e",
+			.addr = 0x18,
+			.swnode = &chuwi_hi8_bma250e_node,
+		},
+		.adapter_path = "\\_SB_.I2C3",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_GPIOINT,
+			.chip = "INT33FC:02",
+			.index = 23,
+			.trigger = ACPI_LEVEL_SENSITIVE,
+			.polarity = ACPI_ACTIVE_HIGH,
+			.con_id = "bma250e_irq",
+		},
+	},
+};
+
+static int __init chuwi_hi8_init(struct device *dev)
+{
+	/*
+	 * Avoid the acpi_unregister_gsi() call in x86_acpi_irq_helper_get()
+	 * breaking the touchscreen + logging various errors when the Windows
+	 * BIOS is used.
+	 */
+	if (acpi_dev_present("MSSL0001", NULL, 1))
+		return -ENODEV;
+
+	return 0;
+}
+
+const struct x86_dev_info chuwi_hi8_info __initconst = {
+	.i2c_client_info = chuwi_hi8_i2c_clients,
+	.i2c_client_count = ARRAY_SIZE(chuwi_hi8_i2c_clients),
+	.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-keys device for these.
+ */
+static const struct software_node cyberbook_t116_gpio_keys_node = {
+	.name = "prog_keys",
+};
+
+static const struct property_entry cyberbook_t116_prog1_key_props[] = {
+	PROPERTY_ENTRY_U32("linux,code", KEY_PROG1),
+	PROPERTY_ENTRY_STRING("label", "prog1_key"),
+	PROPERTY_ENTRY_GPIO("gpios", &cherryview_gpiochip_nodes[0], 30, GPIO_ACTIVE_LOW),
+	PROPERTY_ENTRY_U32("debounce-interval", 50),
+	{ }
+};
+
+static const struct software_node cyberbook_t116_prog1_key_node = {
+	.parent = &cyberbook_t116_gpio_keys_node,
+	.properties = cyberbook_t116_prog1_key_props,
+};
+
+static const struct property_entry cyberbook_t116_prog2_key_props[] = {
+	PROPERTY_ENTRY_U32("linux,code", KEY_PROG2),
+	PROPERTY_ENTRY_STRING("label", "prog2_key"),
+	PROPERTY_ENTRY_GPIO("gpios", &cherryview_gpiochip_nodes[3], 48, GPIO_ACTIVE_LOW),
+	PROPERTY_ENTRY_U32("debounce-interval", 50),
+	{ }
+};
+
+static const struct software_node cyberbook_t116_prog2_key_node = {
+	.parent = &cyberbook_t116_gpio_keys_node,
+	.properties = cyberbook_t116_prog2_key_props,
+};
+
+static const struct software_node *cyberbook_t116_buttons_swnodes[] = {
+	&cyberbook_t116_gpio_keys_node,
+	&cyberbook_t116_prog1_key_node,
+	&cyberbook_t116_prog2_key_node,
+	NULL
+};
+
+const struct x86_dev_info cyberbook_t116_info __initconst = {
+	.gpio_button_swnodes = cyberbook_t116_buttons_swnodes,
+	.gpiochip_type = X86_GPIOCHIP_CHERRYVIEW,
+};
+
+#define CZC_EC_EXTRA_PORT	0x68
+#define CZC_EC_ANDROID_KEYS	0x63
+
+static int __init czc_p10t_init(struct device *dev)
+{
+	/*
+	 * The device boots up in "Windows 7" mode, when the home button sends a
+	 * Windows specific key sequence (Left Meta + D) and the second button
+	 * sends an unknown one while also toggling the Radio Kill Switch.
+	 * This is a surprising behavior when the second button is labeled "Back".
+	 *
+	 * The vendor-supplied Android-x86 build switches the device to a "Android"
+	 * mode by writing value 0x63 to the I/O port 0x68. This just seems to just
+	 * set bit 6 on address 0x96 in the EC region; switching the bit directly
+	 * seems to achieve the same result. It uses a "p10t_switcher" to do the
+	 * job. It doesn't seem to be able to do anything else, and no other use
+	 * of the port 0x68 is known.
+	 *
+	 * In the Android mode, the home button sends just a single scancode,
+	 * which can be handled in Linux userspace more reasonably and the back
+	 * button only sends a scancode without toggling the kill switch.
+	 * The scancode can then be mapped either to Back or RF Kill functionality
+	 * in userspace, depending on how the button is labeled on that particular
+	 * model.
+	 */
+	outb(CZC_EC_ANDROID_KEYS, CZC_EC_EXTRA_PORT);
+	return 0;
+}
+
+const struct x86_dev_info czc_p10t __initconst = {
+	.init = czc_p10t_init,
+};
+
+/* Medion Lifetab S10346 tablets have an Android factory image with everything hardcoded */
+static const char * const medion_lifetab_s10346_accel_mount_matrix[] = {
+	"0", "1", "0",
+	"1", "0", "0",
+	"0", "0", "1"
+};
+
+static const struct property_entry medion_lifetab_s10346_accel_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", medion_lifetab_s10346_accel_mount_matrix),
+	{ }
+};
+
+static const struct software_node medion_lifetab_s10346_accel_node = {
+	.properties = medion_lifetab_s10346_accel_props,
+};
+
+/* Note the LCD panel is mounted upside down, this is correctly indicated in the VBT */
+static const struct property_entry medion_lifetab_s10346_touchscreen_props[] = {
+	PROPERTY_ENTRY_BOOL("touchscreen-inverted-x"),
+	PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"),
+	PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("irq-gpios", &baytrail_gpiochip_nodes[2], 3, GPIO_ACTIVE_HIGH),
+	{ }
+};
+
+static const struct software_node medion_lifetab_s10346_touchscreen_node = {
+	.properties = medion_lifetab_s10346_touchscreen_props,
+};
+
+static const struct x86_i2c_client_info medion_lifetab_s10346_i2c_clients[] __initconst = {
+	{
+		/* kxtj21009 accelerometer */
+		.board_info = {
+			.type = "kxtj21009",
+			.addr = 0x0f,
+			.dev_name = "kxtj21009",
+			.swnode = &medion_lifetab_s10346_accel_node,
+		},
+		.adapter_path = "\\_SB_.I2C3",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_GPIOINT,
+			.chip = "INT33FC:02",
+			.index = 23,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_HIGH,
+			.con_id = "kxtj21009_irq",
+		},
+	}, {
+		/* goodix touchscreen */
+		.board_info = {
+			.type = "GDIX1001:00",
+			.addr = 0x14,
+			.dev_name = "goodix_ts",
+			.swnode = &medion_lifetab_s10346_touchscreen_node,
+		},
+		.adapter_path = "\\_SB_.I2C4",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_APIC,
+			.index = 0x44,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_LOW,
+		},
+	},
+};
+
+const struct x86_dev_info medion_lifetab_s10346_info __initconst = {
+	.i2c_client_info = medion_lifetab_s10346_i2c_clients,
+	.i2c_client_count = ARRAY_SIZE(medion_lifetab_s10346_i2c_clients),
+	.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
+};
+
+/* Nextbook Ares 8 (BYT) tablets have an Android factory image with everything hardcoded */
+static const char * const nextbook_ares8_accel_mount_matrix[] = {
+	"0", "-1", "0",
+	"-1", "0", "0",
+	"0", "0", "1"
+};
+
+static const struct property_entry nextbook_ares8_accel_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", nextbook_ares8_accel_mount_matrix),
+	{ }
+};
+
+static const struct software_node nextbook_ares8_accel_node = {
+	.properties = nextbook_ares8_accel_props,
+};
+
+static const struct property_entry nextbook_ares8_touchscreen_props[] = {
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 800),
+	PROPERTY_ENTRY_U32("touchscreen-size-y", 1280),
+	{ }
+};
+
+static const struct software_node nextbook_ares8_touchscreen_node = {
+	.properties = nextbook_ares8_touchscreen_props,
+};
+
+static const struct x86_i2c_client_info nextbook_ares8_i2c_clients[] __initconst = {
+	{
+		/* Freescale MMA8653FC accelerometer */
+		.board_info = {
+			.type = "mma8653",
+			.addr = 0x1d,
+			.dev_name = "mma8653",
+			.swnode = &nextbook_ares8_accel_node,
+		},
+		.adapter_path = "\\_SB_.I2C3",
+	}, {
+		/* FT5416DQ9 touchscreen controller */
+		.board_info = {
+			.type = "edt-ft5x06",
+			.addr = 0x38,
+			.dev_name = "ft5416",
+			.swnode = &nextbook_ares8_touchscreen_node,
+		},
+		.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,
+			.con_id = "ft5416_irq",
+		},
+	},
+};
+
+const struct x86_dev_info nextbook_ares8_info __initconst = {
+	.i2c_client_info = nextbook_ares8_i2c_clients,
+	.i2c_client_count = ARRAY_SIZE(nextbook_ares8_i2c_clients),
+	.pdev_info = int3496_pdevs,
+	.pdev_count = 1,
+	.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
+};
+
+/* Nextbook Ares 8A (CHT) tablets have an Android factory image with everything hardcoded */
+static const char * const nextbook_ares8a_accel_mount_matrix[] = {
+	"1", "0", "0",
+	"0", "-1", "0",
+	"0", "0", "1"
+};
+
+static const struct property_entry nextbook_ares8a_accel_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", nextbook_ares8a_accel_mount_matrix),
+	{ }
+};
+
+static const struct software_node nextbook_ares8a_accel_node = {
+	.properties = nextbook_ares8a_accel_props,
+};
+
+static const struct property_entry nextbook_ares8a_ft5416_props[] = {
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 800),
+	PROPERTY_ENTRY_U32("touchscreen-size-y", 1280),
+	PROPERTY_ENTRY_GPIO("reset-gpios", &cherryview_gpiochip_nodes[1], 25, GPIO_ACTIVE_LOW),
+	{ }
+};
+
+static const struct software_node nextbook_ares8a_ft5416_node = {
+	.properties = nextbook_ares8a_ft5416_props,
+};
+
+static const struct x86_i2c_client_info nextbook_ares8a_i2c_clients[] __initconst = {
+	{
+		/* Freescale MMA8653FC accelerometer */
+		.board_info = {
+			.type = "mma8653",
+			.addr = 0x1d,
+			.dev_name = "mma8653",
+			.swnode = &nextbook_ares8a_accel_node,
+		},
+		.adapter_path = "\\_SB_.PCI0.I2C3",
+	}, {
+		/* FT5416DQ9 touchscreen controller */
+		.board_info = {
+			.type = "edt-ft5x06",
+			.addr = 0x38,
+			.dev_name = "ft5416",
+			.swnode = &nextbook_ares8a_ft5416_node,
+		},
+		.adapter_path = "\\_SB_.PCI0.I2C6",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_GPIOINT,
+			.chip = "INT33FF:01",
+			.index = 17,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_LOW,
+			.con_id = "ft5416_irq",
+		},
+	},
+};
+
+const struct x86_dev_info nextbook_ares8a_info __initconst = {
+	.i2c_client_info = nextbook_ares8a_i2c_clients,
+	.i2c_client_count = ARRAY_SIZE(nextbook_ares8a_i2c_clients),
+	.gpiochip_type = X86_GPIOCHIP_CHERRYVIEW,
+};
+
+/*
+ * Peaq C1010
+ * This is a standard Windows tablet, but it has a special Dolby button.
+ * This button has a WMI interface, but that is broken. Instead of trying to
+ * use the broken WMI interface, instantiate a gpio-keys device for this.
+ */
+static const struct software_node peaq_c1010_gpio_keys_node = {
+	.name = "gpio_keys",
+};
+
+static const struct property_entry peaq_c1010_dolby_key_props[] = {
+	PROPERTY_ENTRY_U32("linux,code", KEY_SOUND),
+	PROPERTY_ENTRY_STRING("label", "dolby_key"),
+	PROPERTY_ENTRY_GPIO("gpios", &baytrail_gpiochip_nodes[0], 3, GPIO_ACTIVE_LOW),
+	PROPERTY_ENTRY_U32("debounce-interval", 50),
+	{ }
+};
+
+static const struct software_node peaq_c1010_dolby_key_node = {
+	.parent = &peaq_c1010_gpio_keys_node,
+	.properties = peaq_c1010_dolby_key_props,
+};
+
+static const struct software_node *peaq_c1010_button_swnodes[] = {
+	&peaq_c1010_gpio_keys_node,
+	&peaq_c1010_dolby_key_node,
+	NULL
+};
+
+const struct x86_dev_info peaq_c1010_info __initconst = {
+	.gpio_button_swnodes = peaq_c1010_button_swnodes,
+	.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
+};
+
+/*
+ * 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 firmware node 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),
+	PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("irq-gpios", &baytrail_gpiochip_nodes[2], 3, GPIO_ACTIVE_HIGH),
+	{ }
+};
+
+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 accelerometer */
+		.board_info = {
+			.type = "kxcj91008",
+			.addr = 0x0f,
+			.dev_name = "kxcj91008",
+			.swnode = &whitelabel_tm800a550l_accel_node,
+		},
+		.adapter_path = "\\_SB_.I2C3",
+	},
+};
+
+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),
+	.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
+};
+
+/*
+ * Vexia EDU ATLA 10 tablet 5V, Android 4.4 + Guadalinex Ubuntu tablet
+ * distributed to schools in the Spanish Andalucía region.
+ */
+static const struct property_entry vexia_edu_atla10_5v_touchscreen_props[] = {
+	PROPERTY_ENTRY_U32("hid-descr-addr", 0x0000),
+	PROPERTY_ENTRY_U32("post-reset-deassert-delay-ms", 120),
+	PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_LOW),
+	{ }
+};
+
+static const struct software_node vexia_edu_atla10_5v_touchscreen_node = {
+	.properties = vexia_edu_atla10_5v_touchscreen_props,
+};
+
+static const struct x86_i2c_client_info vexia_edu_atla10_5v_i2c_clients[] __initconst = {
+	{
+		/* kxcjk1013 accelerometer */
+		.board_info = {
+			.type = "kxcjk1013",
+			.addr = 0x0f,
+			.dev_name = "kxcjk1013",
+		},
+		.adapter_path = "\\_SB_.I2C3",
+	}, {
+		/*  touchscreen controller */
+		.board_info = {
+			.type = "hid-over-i2c",
+			.addr = 0x38,
+			.dev_name = "FTSC1000",
+			.swnode = &vexia_edu_atla10_5v_touchscreen_node,
+		},
+		.adapter_path = "\\_SB_.I2C4",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_APIC,
+			.index = 0x44,
+			.trigger = ACPI_LEVEL_SENSITIVE,
+			.polarity = ACPI_ACTIVE_HIGH,
+		},
+	}
+};
+
+const struct x86_dev_info vexia_edu_atla10_5v_info __initconst = {
+	.i2c_client_info = vexia_edu_atla10_5v_i2c_clients,
+	.i2c_client_count = ARRAY_SIZE(vexia_edu_atla10_5v_i2c_clients),
+	.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
+};
+
+/*
+ * Vexia EDU ATLA 10 tablet 9V, Android 4.2 + Guadalinex Ubuntu tablet
+ * distributed to schools in the Spanish Andalucía region.
+ */
+static const char * const crystal_cove_pwrsrc_psy[] = { "crystal_cove_pwrsrc" };
+
+static const struct property_entry vexia_edu_atla10_9v_ulpmc_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY("supplied-from", crystal_cove_pwrsrc_psy),
+	{ }
+};
+
+static const struct software_node vexia_edu_atla10_9v_ulpmc_node = {
+	.properties = vexia_edu_atla10_9v_ulpmc_props,
+};
+
+static const char * const vexia_edu_atla10_9v_accel_mount_matrix[] = {
+	"0", "-1", "0",
+	"1", "0", "0",
+	"0", "0", "1"
+};
+
+static const struct property_entry vexia_edu_atla10_9v_accel_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", vexia_edu_atla10_9v_accel_mount_matrix),
+	{ }
+};
+
+static const struct software_node vexia_edu_atla10_9v_accel_node = {
+	.properties = vexia_edu_atla10_9v_accel_props,
+};
+
+static const struct property_entry vexia_edu_atla10_9v_touchscreen_props[] = {
+	PROPERTY_ENTRY_U32("hid-descr-addr", 0x0000),
+	PROPERTY_ENTRY_U32("post-reset-deassert-delay-ms", 120),
+	PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[0], 60, GPIO_ACTIVE_LOW),
+	{ }
+};
+
+static const struct software_node vexia_edu_atla10_9v_touchscreen_node = {
+	.properties = vexia_edu_atla10_9v_touchscreen_props,
+};
+
+static const struct property_entry vexia_edu_atla10_9v_pmic_props[] = {
+	PROPERTY_ENTRY_BOOL("linux,register-pwrsrc-power_supply"),
+	{ }
+};
+
+static const struct software_node vexia_edu_atla10_9v_pmic_node = {
+	.properties = vexia_edu_atla10_9v_pmic_props,
+};
+
+static const struct x86_i2c_client_info vexia_edu_atla10_9v_i2c_clients[] __initconst = {
+	{
+		/* I2C attached embedded controller, used to access fuel-gauge */
+		.board_info = {
+			.type = "vexia_atla10_ec",
+			.addr = 0x76,
+			.dev_name = "ulpmc",
+			.swnode = &vexia_edu_atla10_9v_ulpmc_node,
+		},
+		.adapter_path = "0000:00:18.1",
+	}, {
+		/* RT5642 audio codec */
+		.board_info = {
+			.type = "rt5640",
+			.addr = 0x1c,
+			.dev_name = "rt5640",
+		},
+		.adapter_path = "0000:00:18.2",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_GPIOINT,
+			.chip = "INT33FC:02",
+			.index = 4,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_HIGH,
+			.con_id = "rt5640_irq",
+		},
+	}, {
+		/* kxtj21009 accelerometer */
+		.board_info = {
+			.type = "kxtj21009",
+			.addr = 0x0f,
+			.dev_name = "kxtj21009",
+			.swnode = &vexia_edu_atla10_9v_accel_node,
+		},
+		.adapter_path = "0000:00:18.5",
+	}, {
+		/* FT5416DQ9 touchscreen controller */
+		.board_info = {
+			.type = "hid-over-i2c",
+			.addr = 0x38,
+			.dev_name = "FTSC1000",
+			.swnode = &vexia_edu_atla10_9v_touchscreen_node,
+		},
+		.adapter_path = "0000:00:18.6",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_APIC,
+			.index = 0x45,
+			.trigger = ACPI_LEVEL_SENSITIVE,
+			.polarity = ACPI_ACTIVE_HIGH,
+		},
+	}, {
+		/* Crystal Cove PMIC */
+		.board_info = {
+			.type = "intel_soc_pmic_crc",
+			.addr = 0x6e,
+			.dev_name = "intel_soc_pmic_crc",
+			.swnode = &vexia_edu_atla10_9v_pmic_node,
+		},
+		.adapter_path = "0000:00:18.7",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_APIC,
+			.index = 0x43,
+			.trigger = ACPI_LEVEL_SENSITIVE,
+			.polarity = ACPI_ACTIVE_HIGH,
+		},
+	}
+};
+
+static const struct x86_serdev_info vexia_edu_atla10_9v_serdevs[] __initconst = {
+	{
+		.ctrl.pci.devfn = PCI_DEVFN(0x1e, 3),
+		.ctrl_devname = "serial0",
+		.serdev_hid = "OBDA8723",
+	},
+};
+
+static int __init vexia_edu_atla10_9v_init(struct device *dev)
+{
+	struct pci_dev *pdev;
+	int ret;
+
+	/* Enable the Wifi module by setting the wifi_enable pin to 1 */
+	ret = x86_android_tablet_get_gpiod("INT33FC:02", 20, "wifi_enable",
+					   false, GPIOD_OUT_HIGH, NULL);
+	if (ret)
+		return ret;
+
+	/* Reprobe the SDIO controller to enumerate the now enabled Wifi module */
+	pdev = pci_get_domain_bus_and_slot(0, 0, PCI_DEVFN(0x11, 0));
+	if (!pdev) {
+		pr_warn("Could not get PCI SDIO at devfn 0x%02x\n", PCI_DEVFN(0x11, 0));
+		return 0;
+	}
+
+	ret = device_reprobe(&pdev->dev);
+	if (ret)
+		pci_warn(pdev, "Reprobing error: %d\n", ret);
+
+	pci_dev_put(pdev);
+	return 0;
+}
+
+const struct x86_dev_info vexia_edu_atla10_9v_info __initconst = {
+	.i2c_client_info = vexia_edu_atla10_9v_i2c_clients,
+	.i2c_client_count = ARRAY_SIZE(vexia_edu_atla10_9v_i2c_clients),
+	.serdev_info = vexia_edu_atla10_9v_serdevs,
+	.serdev_count = ARRAY_SIZE(vexia_edu_atla10_9v_serdevs),
+	.init = vexia_edu_atla10_9v_init,
+	.use_pci = true,
+	.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
+};
+
+/*
+ * The firmware node for ktd2026 on Xaomi pad2. It composed of a RGB LED node
+ * with three subnodes for each color (B/G/R). The RGB LED node is named
+ * "multi-led" to align with the name in the device tree.
+ */
+
+/* Main firmware node for ktd2026 */
+static const struct software_node ktd2026_node = {
+	.name = "ktd2026",
+};
+
+static const struct property_entry ktd2026_rgb_led_props[] = {
+	PROPERTY_ENTRY_U32("reg", 0),
+	PROPERTY_ENTRY_U32("color", LED_COLOR_ID_RGB),
+	PROPERTY_ENTRY_STRING("label", "mipad2:rgb:indicator"),
+	PROPERTY_ENTRY_STRING("linux,default-trigger", "bq27520-0-charging-orange-full-green"),
+	{ }
+};
+
+static const struct software_node ktd2026_rgb_led_node = {
+	.name = "multi-led",
+	.properties = ktd2026_rgb_led_props,
+	.parent = &ktd2026_node,
+};
+
+static const struct property_entry ktd2026_blue_led_props[] = {
+	PROPERTY_ENTRY_U32("reg", 0),
+	PROPERTY_ENTRY_U32("color", LED_COLOR_ID_BLUE),
+	{ }
+};
+
+static const struct software_node ktd2026_blue_led_node = {
+	.properties = ktd2026_blue_led_props,
+	.parent = &ktd2026_rgb_led_node,
+};
+
+static const struct property_entry ktd2026_green_led_props[] = {
+	PROPERTY_ENTRY_U32("reg", 1),
+	PROPERTY_ENTRY_U32("color", LED_COLOR_ID_GREEN),
+	{ }
+};
+
+static const struct software_node ktd2026_green_led_node = {
+	.properties = ktd2026_green_led_props,
+	.parent = &ktd2026_rgb_led_node,
+};
+
+static const struct property_entry ktd2026_red_led_props[] = {
+	PROPERTY_ENTRY_U32("reg", 2),
+	PROPERTY_ENTRY_U32("color", LED_COLOR_ID_RED),
+	{ }
+};
+
+static const struct software_node ktd2026_red_led_node = {
+	.properties = ktd2026_red_led_props,
+	.parent = &ktd2026_rgb_led_node,
+};
+
+static const struct software_node *ktd2026_node_group[] = {
+	&ktd2026_node,
+	&ktd2026_rgb_led_node,
+	&ktd2026_red_led_node,
+	&ktd2026_green_led_node,
+	&ktd2026_blue_led_node,
+	NULL
+};
+
+/*
+ * For the LEDs which backlight the Menu / Home / Back capacitive buttons on
+ * the bottom bezel. These are attached to a TPS61158 LED controller which
+ * is controlled by the "pwm_soc_lpss_2" PWM output.
+ */
+#define XIAOMI_MIPAD2_LED_PERIOD_NS		19200
+#define XIAOMI_MIPAD2_LED_MAX_DUTY_NS		 6000 /* From Android kernel */
+
+static struct pwm_device *xiaomi_mipad2_led_pwm;
+
+static int xiaomi_mipad2_brightness_set(struct led_classdev *led_cdev,
+					enum led_brightness val)
+{
+	struct pwm_state state = {
+		.period = XIAOMI_MIPAD2_LED_PERIOD_NS,
+		.duty_cycle = XIAOMI_MIPAD2_LED_MAX_DUTY_NS * val / LED_FULL,
+		/* Always set PWM enabled to avoid the pin floating */
+		.enabled = true,
+	};
+
+	return pwm_apply_might_sleep(xiaomi_mipad2_led_pwm, &state);
+}
+
+static int __init xiaomi_mipad2_init(struct device *dev)
+{
+	struct led_classdev *led_cdev;
+
+	xiaomi_mipad2_led_pwm = devm_pwm_get(dev, "pwm_soc_lpss_2");
+	if (IS_ERR(xiaomi_mipad2_led_pwm))
+		return dev_err_probe(dev, PTR_ERR(xiaomi_mipad2_led_pwm), "getting pwm\n");
+
+	led_cdev = devm_kzalloc(dev, sizeof(*led_cdev), GFP_KERNEL);
+	if (!led_cdev)
+		return -ENOMEM;
+
+	led_cdev->name = "mipad2:white:touch-buttons-backlight";
+	led_cdev->max_brightness = LED_FULL;
+	led_cdev->default_trigger = "input-events";
+	led_cdev->brightness_set_blocking = xiaomi_mipad2_brightness_set;
+	/* Turn LED off during suspend */
+	led_cdev->flags = LED_CORE_SUSPENDRESUME;
+
+	return devm_led_classdev_register(dev, led_cdev);
+}
+
+/*
+ * 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.
+ *
+ * This takes care of instantiating the hidden devices manually.
+ */
+static const struct x86_i2c_client_info xiaomi_mipad2_i2c_clients[] __initconst = {
+	{
+		/* BQ27520 fuel-gauge */
+		.board_info = {
+			.type = "bq27520",
+			.addr = 0x55,
+			.dev_name = "bq27520",
+			.swnode = &fg_bq25890_supply_node,
+		},
+		.adapter_path = "\\_SB_.PCI0.I2C1",
+	}, {
+		/* KTD2026 RGB notification LED controller */
+		.board_info = {
+			.type = "ktd2026",
+			.addr = 0x30,
+			.dev_name = "ktd2026",
+			.swnode = &ktd2026_node,
+		},
+		.adapter_path = "\\_SB_.PCI0.I2C3",
+	},
+};
+
+const struct x86_dev_info xiaomi_mipad2_info __initconst = {
+	.i2c_client_info = xiaomi_mipad2_i2c_clients,
+	.i2c_client_count = ARRAY_SIZE(xiaomi_mipad2_i2c_clients),
+	.swnode_group = ktd2026_node_group,
+	.init = xiaomi_mipad2_init,
+};

linux-7.2.3/drivers/platform/x86/x86-android-tablets/shared-psy-info.c

@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Shared psy info for X86 tablets which ship with Android as the factory image
+ * and which have broken DSDT tables. The factory kernels shipped on these
+ * devices typically have a bunch of things hardcoded, rather than specified
+ * in their DSDT.
+ *
+ * Copyright (C) 2021-2023 Hans de Goede <hansg@kernel.org>
+ */
+
+#include <linux/gpio/machine.h>
+#include <linux/gpio/property.h>
+#include <linux/platform_device.h>
+#include <linux/power/bq24190_charger.h>
+#include <linux/property.h>
+#include <linux/regulator/machine.h>
+
+#include "shared-psy-info.h"
+#include "x86-android-tablets.h"
+
+/* Generic / shared charger / battery settings */
+const char * const tusb1211_chg_det_psy[] = { "tusb1211-charger-detect" };
+const char * const bq24190_psy[] = { "bq24190-charger" };
+const char * const bq25890_psy[] = { "bq25890-charger-0" };
+
+static const struct property_entry fg_bq24190_supply_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq24190_psy),
+	{ }
+};
+
+const struct software_node fg_bq24190_supply_node = {
+	.properties = fg_bq24190_supply_props,
+};
+
+static const struct property_entry fg_bq25890_supply_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq25890_psy),
+	{ }
+};
+
+const struct software_node fg_bq25890_supply_node = {
+	.properties = fg_bq25890_supply_props,
+};
+
+static const u32 generic_lipo_battery_ovc_cap_celcius[] = { 25 };
+
+static const u32 generic_lipo_4v2_battery_ovc_cap_table0[] = {
+	4200000, 100,
+	4150000, 95,
+	4110000, 90,
+	4075000, 85,
+	4020000, 80,
+	3982500, 75,
+	3945000, 70,
+	3907500, 65,
+	3870000, 60,
+	3853333, 55,
+	3836667, 50,
+	3820000, 45,
+	3803333, 40,
+	3786667, 35,
+	3770000, 30,
+	3750000, 25,
+	3730000, 20,
+	3710000, 15,
+	3690000, 10,
+	3610000, 5,
+	3350000, 0
+};
+
+static const u32 generic_lipo_hv_4v35_battery_ovc_cap_table0[] = {
+	4300000, 100,
+	4250000, 96,
+	4200000, 91,
+	4150000, 86,
+	4110000, 82,
+	4075000, 77,
+	4020000, 73,
+	3982500, 68,
+	3945000, 64,
+	3907500, 59,
+	3870000, 55,
+	3853333, 50,
+	3836667, 45,
+	3820000, 41,
+	3803333, 36,
+	3786667, 32,
+	3770000, 27,
+	3750000, 23,
+	3730000, 18,
+	3710000, 14,
+	3690000, 9,
+	3610000, 5,
+	3350000, 0
+};
+
+/* Standard LiPo (max 4.2V) settings used by most devs with a LiPo battery */
+static const struct property_entry generic_lipo_4v2_battery_props[] = {
+	PROPERTY_ENTRY_STRING("compatible", "simple-battery"),
+	PROPERTY_ENTRY_STRING("device-chemistry", "lithium-ion-polymer"),
+	PROPERTY_ENTRY_U32("precharge-current-microamp", 256000),
+	PROPERTY_ENTRY_U32("charge-term-current-microamp", 128000),
+	PROPERTY_ENTRY_U32("constant-charge-current-max-microamp", 2048000),
+	PROPERTY_ENTRY_U32("constant-charge-voltage-max-microvolt", 4208000),
+	PROPERTY_ENTRY_U32("factory-internal-resistance-micro-ohms", 150000),
+	PROPERTY_ENTRY_U32_ARRAY("ocv-capacity-celsius",
+				 generic_lipo_battery_ovc_cap_celcius),
+	PROPERTY_ENTRY_U32_ARRAY("ocv-capacity-table-0",
+				 generic_lipo_4v2_battery_ovc_cap_table0),
+	{ }
+};
+
+const struct software_node generic_lipo_4v2_battery_node = {
+	.properties = generic_lipo_4v2_battery_props,
+};
+
+const struct software_node *generic_lipo_4v2_battery_swnodes[] = {
+	&generic_lipo_4v2_battery_node,
+	NULL
+};
+
+/* LiPo HighVoltage (max 4.35V) settings used by most devs with a HV battery */
+static const struct property_entry generic_lipo_hv_4v35_battery_props[] = {
+	PROPERTY_ENTRY_STRING("compatible", "simple-battery"),
+	PROPERTY_ENTRY_STRING("device-chemistry", "lithium-ion"),
+	PROPERTY_ENTRY_U32("precharge-current-microamp", 256000),
+	PROPERTY_ENTRY_U32("charge-term-current-microamp", 128000),
+	PROPERTY_ENTRY_U32("constant-charge-current-max-microamp", 1856000),
+	PROPERTY_ENTRY_U32("constant-charge-voltage-max-microvolt", 4352000),
+	PROPERTY_ENTRY_U32("factory-internal-resistance-micro-ohms", 150000),
+	PROPERTY_ENTRY_U32_ARRAY("ocv-capacity-celsius",
+				 generic_lipo_battery_ovc_cap_celcius),
+	PROPERTY_ENTRY_U32_ARRAY("ocv-capacity-table-0",
+				 generic_lipo_hv_4v35_battery_ovc_cap_table0),
+	{ }
+};
+
+const struct software_node generic_lipo_hv_4v35_battery_node = {
+	.properties = generic_lipo_hv_4v35_battery_props,
+};
+
+const struct software_node *generic_lipo_hv_4v35_battery_swnodes[] = {
+	&generic_lipo_hv_4v35_battery_node,
+	NULL
+};
+
+/* For enabling the bq24190 5V boost based on id-pin */
+static struct regulator_consumer_supply intel_int3496_consumer = {
+	.supply = "vbus",
+	.dev_name = "intel-int3496",
+};
+
+static const struct regulator_init_data bq24190_vbus_init_data = {
+	.constraints = {
+		.name = "bq24190_vbus",
+		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+	},
+	.consumer_supplies = &intel_int3496_consumer,
+	.num_consumer_supplies = 1,
+};
+
+struct bq24190_platform_data bq24190_pdata = {
+	.regulator_init_data = &bq24190_vbus_init_data,
+};
+
+const char * const bq24190_modules[] __initconst = {
+	"intel_crystal_cove_charger", /* For the bq24190 IRQ */
+	"bq24190_charger",            /* For the Vbus regulator for intel-int3496 */
+	NULL
+};
+
+static const struct property_entry int3496_reference_props[] __initconst = {
+	PROPERTY_ENTRY_GPIO("vbus-gpios", &baytrail_gpiochip_nodes[1], 15, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("mux-gpios", &baytrail_gpiochip_nodes[2], 1, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_GPIO("id-gpios", &baytrail_gpiochip_nodes[2], 18, GPIO_ACTIVE_HIGH),
+	{ }
+};
+
+/* Generic pdevs array and gpio-lookups for micro USB ID pin handling */
+const struct platform_device_info int3496_pdevs[] __initconst = {
+	{
+		/* For micro USB ID pin handling */
+		.name = "intel-int3496",
+		.id = PLATFORM_DEVID_NONE,
+		.properties = int3496_reference_props,
+	},
+};

linux-7.2.3/drivers/platform/x86/x86-android-tablets/shared-psy-info.h

@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * Shared psy info for X86 tablets which ship with Android as the factory image
+ * and which have broken DSDT tables. The factory kernels shipped on these
+ * devices typically have a bunch of things hardcoded, rather than specified
+ * in their DSDT.
+ *
+ * Copyright (C) 2021-2023 Hans de Goede <hansg@kernel.org>
+ */
+#ifndef __PDX86_SHARED_PSY_INFO_H
+#define __PDX86_SHARED_PSY_INFO_H
+
+struct bq24190_platform_data;
+struct platform_device_info;
+struct software_node;
+
+extern const char * const tusb1211_chg_det_psy[];
+extern const char * const bq24190_psy[];
+extern const char * const bq25890_psy[];
+
+extern const struct software_node fg_bq24190_supply_node;
+extern const struct software_node fg_bq25890_supply_node;
+
+extern const struct software_node generic_lipo_4v2_battery_node;
+extern const struct software_node *generic_lipo_4v2_battery_swnodes[];
+
+extern const struct software_node generic_lipo_hv_4v35_battery_node;
+extern const struct software_node *generic_lipo_hv_4v35_battery_swnodes[];
+
+extern struct bq24190_platform_data bq24190_pdata;
+extern const char * const bq24190_modules[];
+
+extern const struct platform_device_info int3496_pdevs[];
+
+#endif

linux-7.2.3/drivers/platform/x86/x86-android-tablets/vexia_atla10_ec.c

@@ -0,0 +1,261 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * power_supply class (battery) driver for the I2C attached embedded controller
+ * found on Vexia EDU ATLA 10 (9V version) tablets.
+ *
+ * This is based on the ACPI Battery device in the DSDT which should work
+ * expect that it expects the I2C controller to be enumerated as an ACPI
+ * device and the tablet's BIOS enumerates all LPSS devices as PCI devices
+ * (and changing the LPSS BIOS settings from PCI -> ACPI does not work).
+ *
+ * Copyright (c) 2024 Hans de Goede <hansg@kernel.org>
+ */
+
+#include <linux/bits.h>
+#include <linux/devm-helpers.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/power_supply.h>
+#include <linux/types.h>
+#include <linux/workqueue.h>
+
+#include <asm/byteorder.h>
+
+/* State field uses ACPI Battery spec status bits */
+#define ACPI_BATTERY_STATE_DISCHARGING		BIT(0)
+#define ACPI_BATTERY_STATE_CHARGING		BIT(1)
+
+#define ATLA10_EC_BATTERY_STATE_COMMAND		0x87
+#define ATLA10_EC_BATTERY_INFO_COMMAND		0x88
+
+/* From broken ACPI battery device in DSDT */
+#define ATLA10_EC_VOLTAGE_MIN_DESIGN_uV		3750000
+
+/* Update data every 5 seconds */
+#define UPDATE_INTERVAL_JIFFIES			(5 * HZ)
+
+struct atla10_ec_battery_state {
+	u8 status;			/* Using ACPI Battery spec status bits */
+	u8 capacity;			/* Percent */
+	__le16 charge_now_mAh;
+	__le16 voltage_now_mV;
+	__le16 current_now_mA;
+	__le16 charge_full_mAh;
+	__le16 temp;			/* centi degrees Celsius */
+} __packed;
+
+struct atla10_ec_battery_info {
+	__le16 charge_full_design_mAh;
+	__le16 voltage_now_mV;		/* Should be design voltage, but is not ? */
+	__le16 charge_full_design2_mAh;
+} __packed;
+
+struct atla10_ec_data {
+	struct i2c_client *client;
+	struct power_supply *psy;
+	struct delayed_work work;
+	struct mutex update_lock;
+	struct atla10_ec_battery_info info;
+	struct atla10_ec_battery_state state;
+	bool valid;			/* true if state is valid */
+	unsigned long last_update;	/* In jiffies */
+};
+
+static int atla10_ec_cmd(struct atla10_ec_data *data, u8 cmd, u8 len, u8 *values)
+{
+	struct device *dev = &data->client->dev;
+	u8 buf[I2C_SMBUS_BLOCK_MAX];
+	int ret;
+
+	ret = i2c_smbus_read_block_data(data->client, cmd, buf);
+	if (ret != len) {
+		dev_err(dev, "I2C command 0x%02x error: %d\n", cmd, ret);
+		return -EIO;
+	}
+
+	memcpy(values, buf, len);
+	return 0;
+}
+
+static int atla10_ec_update(struct atla10_ec_data *data)
+{
+	int ret;
+
+	if (data->valid && time_before(jiffies, data->last_update + UPDATE_INTERVAL_JIFFIES))
+		return 0;
+
+	ret = atla10_ec_cmd(data, ATLA10_EC_BATTERY_STATE_COMMAND,
+			    sizeof(data->state), (u8 *)&data->state);
+	if (ret)
+		return ret;
+
+	data->last_update = jiffies;
+	data->valid = true;
+	return 0;
+}
+
+static int atla10_ec_psy_get_property(struct power_supply *psy,
+				      enum power_supply_property psp,
+				      union power_supply_propval *val)
+{
+	struct atla10_ec_data *data = power_supply_get_drvdata(psy);
+	int charge_now_mAh, charge_full_mAh, ret;
+
+	guard(mutex)(&data->update_lock);
+
+	ret = atla10_ec_update(data);
+	if (ret)
+		return ret;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_STATUS:
+		if (data->state.status & ACPI_BATTERY_STATE_DISCHARGING)
+			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+		else if (data->state.status & ACPI_BATTERY_STATE_CHARGING)
+			val->intval = POWER_SUPPLY_STATUS_CHARGING;
+		else if (data->state.capacity == 100)
+			val->intval = POWER_SUPPLY_STATUS_FULL;
+		else
+			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+		break;
+	case POWER_SUPPLY_PROP_CAPACITY:
+		val->intval = data->state.capacity;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_NOW:
+		/*
+		 * The EC has a bug where it reports charge-full-design as
+		 * charge-now when the battery is full. Clamp charge-now to
+		 * charge-full to workaround this.
+		 */
+		charge_now_mAh = le16_to_cpu(data->state.charge_now_mAh);
+		charge_full_mAh = le16_to_cpu(data->state.charge_full_mAh);
+		val->intval = min(charge_now_mAh, charge_full_mAh) * 1000;
+		break;
+	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+		val->intval = le16_to_cpu(data->state.voltage_now_mV) * 1000;
+		break;
+	case POWER_SUPPLY_PROP_CURRENT_NOW:
+		val->intval = le16_to_cpu(data->state.current_now_mA) * 1000;
+		/*
+		 * Documentation/ABI/testing/sysfs-class-power specifies
+		 * negative current for discharging.
+		 */
+		if (data->state.status & ACPI_BATTERY_STATE_DISCHARGING)
+			val->intval = -val->intval;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_FULL:
+		val->intval = le16_to_cpu(data->state.charge_full_mAh) * 1000;
+		break;
+	case POWER_SUPPLY_PROP_TEMP:
+		val->intval = le16_to_cpu(data->state.temp) / 10;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+		val->intval = le16_to_cpu(data->info.charge_full_design_mAh) * 1000;
+		break;
+	case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+		val->intval = ATLA10_EC_VOLTAGE_MIN_DESIGN_uV;
+		break;
+	case POWER_SUPPLY_PROP_PRESENT:
+		val->intval = 1;
+		break;
+	case POWER_SUPPLY_PROP_TECHNOLOGY:
+		val->intval = POWER_SUPPLY_TECHNOLOGY_LIPO;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void atla10_ec_external_power_changed_work(struct work_struct *work)
+{
+	struct atla10_ec_data *data = container_of(work, struct atla10_ec_data, work.work);
+
+	dev_dbg(&data->client->dev, "External power changed\n");
+	data->valid = false;
+	power_supply_changed(data->psy);
+}
+
+static void atla10_ec_external_power_changed(struct power_supply *psy)
+{
+	struct atla10_ec_data *data = power_supply_get_drvdata(psy);
+
+	/* After charger plug in/out wait 0.5s for things to stabilize */
+	mod_delayed_work(system_percpu_wq, &data->work, HZ / 2);
+}
+
+static const enum power_supply_property atla10_ec_psy_props[] = {
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_CAPACITY,
+	POWER_SUPPLY_PROP_CHARGE_NOW,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
+	POWER_SUPPLY_PROP_CURRENT_NOW,
+	POWER_SUPPLY_PROP_CHARGE_FULL,
+	POWER_SUPPLY_PROP_TEMP,
+	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+	POWER_SUPPLY_PROP_PRESENT,
+	POWER_SUPPLY_PROP_TECHNOLOGY,
+};
+
+static const struct power_supply_desc atla10_ec_psy_desc = {
+	.name = "atla10_ec_battery",
+	.type = POWER_SUPPLY_TYPE_BATTERY,
+	.properties = atla10_ec_psy_props,
+	.num_properties = ARRAY_SIZE(atla10_ec_psy_props),
+	.get_property = atla10_ec_psy_get_property,
+	.external_power_changed = atla10_ec_external_power_changed,
+};
+
+static int atla10_ec_probe(struct i2c_client *client)
+{
+	struct power_supply_config psy_cfg = { };
+	struct device *dev = &client->dev;
+	struct atla10_ec_data *data;
+	int ret;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	psy_cfg.drv_data = data;
+	data->client = client;
+
+	ret = devm_mutex_init(dev, &data->update_lock);
+	if (ret)
+		return ret;
+
+	ret = devm_delayed_work_autocancel(dev, &data->work,
+					   atla10_ec_external_power_changed_work);
+	if (ret)
+		return ret;
+
+	ret = atla10_ec_cmd(data, ATLA10_EC_BATTERY_INFO_COMMAND,
+			    sizeof(data->info), (u8 *)&data->info);
+	if (ret)
+		return ret;
+
+	data->psy = devm_power_supply_register(dev, &atla10_ec_psy_desc, &psy_cfg);
+	return PTR_ERR_OR_ZERO(data->psy);
+}
+
+static const struct i2c_device_id atla10_ec_id_table[] = {
+	{ .name = "vexia_atla10_ec" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, atla10_ec_id_table);
+
+static struct i2c_driver atla10_ec_driver = {
+	.driver = {
+		.name = "vexia_atla10_ec",
+	},
+	.probe = atla10_ec_probe,
+	.id_table = atla10_ec_id_table,
+};
+module_i2c_driver(atla10_ec_driver);
+
+MODULE_AUTHOR("Hans de Goede <hansg@kernel.org>");
+MODULE_DESCRIPTION("Battery driver for Vexia EDU ATLA 10 tablet EC");
+MODULE_LICENSE("GPL");

linux-7.2.3/drivers/platform/x86/x86-android-tablets/x86-android-tablets.h

@@ -0,0 +1,138 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * DMI based code to deal with broken DSDTs on X86 tablets which ship with
+ * Android as (part of) the factory image. The factory kernels shipped on these
+ * devices typically have a bunch of things hardcoded, rather than specified
+ * in their DSDT.
+ *
+ * Copyright (C) 2021-2023 Hans de Goede <hansg@kernel.org>
+ */
+#ifndef __PDX86_X86_ANDROID_TABLETS_H
+#define __PDX86_X86_ANDROID_TABLETS_H
+
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/irqdomain_defs.h>
+#include <linux/device-id/dmi.h>
+#include <linux/spi/spi.h>
+
+struct gpio_desc;
+struct platform_device_info;
+struct software_node;
+
+/*
+ * Helpers to get Linux IRQ numbers given a description of the IRQ source
+ * (either IOAPIC index, or GPIO chip name + pin-number).
+ */
+enum x86_acpi_irq_type {
+	X86_ACPI_IRQ_TYPE_NONE,
+	X86_ACPI_IRQ_TYPE_APIC,
+	X86_ACPI_IRQ_TYPE_GPIOINT,
+	X86_ACPI_IRQ_TYPE_PMIC,
+};
+
+enum x86_gpiochip_type {
+	X86_GPIOCHIP_UNSPECIFIED = 0,
+	X86_GPIOCHIP_BAYTRAIL,
+	X86_GPIOCHIP_CHERRYVIEW,
+};
+
+struct x86_acpi_irq_data {
+	char *chip;   /* GPIO chip label (GPIOINT) or PMIC ACPI path (PMIC) */
+	enum x86_acpi_irq_type type;
+	enum irq_domain_bus_token domain;
+	int index;
+	int trigger;  /* ACPI_EDGE_SENSITIVE / ACPI_LEVEL_SENSITIVE */
+	int polarity; /* ACPI_ACTIVE_HIGH / ACPI_ACTIVE_LOW / ACPI_ACTIVE_BOTH */
+	bool free_gpio; /* Release GPIO after getting IRQ (for TYPE_GPIOINT) */
+	const char *con_id;
+};
+
+/* Structs to describe devices to instantiate */
+struct x86_i2c_client_info {
+	struct i2c_board_info board_info;
+	char *adapter_path;
+	struct x86_acpi_irq_data irq_data;
+};
+
+struct x86_spi_dev_info {
+	struct spi_board_info board_info;
+	char *ctrl_path;
+	struct x86_acpi_irq_data irq_data;
+};
+
+struct x86_serdev_info {
+	union {
+		struct {
+			const char *hid;
+			const char *uid;
+		} acpi;
+		struct {
+			unsigned int devfn;
+		} pci;
+	} ctrl;
+	const char *ctrl_devname;
+	/*
+	 * ATM the serdev core only supports of or ACPI matching; and so far all
+	 * Android x86 tablets DSDTs have usable serdev nodes, but sometimes
+	 * under the wrong controller. So we just tie the existing serdev ACPI
+	 * node to the right controller.
+	 */
+	const char *serdev_hid;
+};
+
+struct x86_dev_info {
+	const char * const *modules;
+	const struct software_node **swnode_group;
+	const struct x86_i2c_client_info *i2c_client_info;
+	const struct x86_spi_dev_info *spi_dev_info;
+	const struct platform_device_info *pdev_info;
+	const struct x86_serdev_info *serdev_info;
+	const struct software_node **gpio_button_swnodes;
+	int i2c_client_count;
+	int spi_dev_count;
+	int pdev_count;
+	int serdev_count;
+	int (*init)(struct device *dev);
+	void (*exit)(void);
+	bool use_pci;
+	enum x86_gpiochip_type gpiochip_type;
+};
+
+int x86_android_tablet_get_gpiod(const char *chip, int pin, const char *con_id,
+				 bool active_low, enum gpiod_flags dflags,
+				 struct gpio_desc **desc);
+int x86_acpi_irq_helper_get(const struct x86_acpi_irq_data *data);
+
+/* Software nodes representing GPIO chips used by various tablets */
+extern const struct software_node baytrail_gpiochip_nodes[];
+extern const struct software_node cherryview_gpiochip_nodes[];
+
+/*
+ * Extern declarations of x86_dev_info structs so there can be a single
+ * MODULE_DEVICE_TABLE(dmi, ...), while splitting the board descriptions.
+ */
+extern const struct x86_dev_info acer_a1_840_info;
+extern const struct x86_dev_info acer_b1_750_info;
+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;
+extern const struct x86_dev_info lenovo_yoga_tab2_830_1050_info;
+extern const struct x86_dev_info lenovo_yoga_tab2_1380_info;
+extern const struct x86_dev_info lenovo_yt3_info;
+extern const struct x86_dev_info medion_lifetab_s10346_info;
+extern const struct x86_dev_info nextbook_ares8_info;
+extern const struct x86_dev_info nextbook_ares8a_info;
+extern const struct x86_dev_info peaq_c1010_info;
+extern const struct x86_dev_info whitelabel_tm800a550l_info;
+extern const struct x86_dev_info vexia_edu_atla10_5v_info;
+extern const struct x86_dev_info vexia_edu_atla10_9v_info;
+extern const struct x86_dev_info xiaomi_mipad2_info;
+extern const struct dmi_system_id x86_android_tablet_ids[];
+
+#endif