linux-kernel - [PATCH AUTOSEL 6.2 05/37] platform/x86: x86-android-tablets: Add Acer Iconia One 7 B1-750 data

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Message-Id: <20230501025945.3253774-5-sashal@kernel.org>
Date:   Sun, 30 Apr 2023 22:59:13 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Hans de Goede <hdegoede@...hat.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Sasha Levin <sashal@...nel.org>, markgross@...nel.org,
        platform-driver-x86@...r.kernel.org
Subject: [PATCH AUTOSEL 6.2 05/37] platform/x86: x86-android-tablets: Add Acer Iconia One 7 B1-750 data

From: Hans de Goede <hdegoede@...hat.com>

[ Upstream commit 2f0cf1e85ddb5ae17284050dc1adafb89e4f1d8f ]

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@...hat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Link: https://lore.kernel.org/r/20230301092331.7038-2-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/platform/x86/x86-android-tablets.c | 101 +++++++++++++++++++--
 1 file changed, 91 insertions(+), 10 deletions(-)

diff --git a/drivers/platform/x86/x86-android-tablets.c b/drivers/platform/x86/x86-android-tablets.c
index 123a4618db55f..9178076d9d7da 100644
--- 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
 };
 
@@ -1435,6 +1508,14 @@ 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 = {
-- 
2.39.2