[PATCH v2 2/3] platform/x86: x86-android-tablets: Add Yoga Book TS3A227E

[Maurizio Casciano]

The Yoga Book YB1-X91F/L firmware describes the TS3A227E headset
detector as a secondary resource of the RT5677 codec rather than as an
independent I2C device. No client is therefore created for it.

Instantiate the device on I2C1 at address 0x3b, describe its GPIO
interrupt, and provide the mic-bias setting used by the Yoga Book
design. This lets the ASoC machine driver use jack and button detection.

Signed-off-by: Maurizio Casciano <mauriziocasciano7@xxxxxxxxx>
Assisted-by: LLM sparse
---
 .../platform/x86/x86-android-tablets/lenovo.c | 29 ++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/x86-android-tablets/lenovo.c b/drivers/platform/x86/x86-android-tablets/lenovo.c
index a8c849ee03db..88693b9a1b01 100644
--- a/drivers/platform/x86/x86-android-tablets/lenovo.c
+++ b/drivers/platform/x86/x86-android-tablets/lenovo.c
@@ -149,6 +149,16 @@ static const struct software_node * const lenovo_yb1_x91_drv2604_nodes[] = {
 	&lenovo_yb1_x91_drv2604_1_node,
 };
 
+static const struct property_entry lenovo_yb1_ts3a227e_props[] = {
+	/* Value taken from the Lenovo Android kernel code drop. */
+	PROPERTY_ENTRY_U32("ti,micbias", 7),
+	{ }
+};
+
+static const struct software_node lenovo_yb1_ts3a227e_node = {
+	.properties = lenovo_yb1_ts3a227e_props,
+};
+
 static const struct x86_i2c_client_info lenovo_yb1_x90_i2c_clients[] __initconst = {
 	{
 		/* BQ27542 fuel-gauge */
@@ -304,7 +314,7 @@ const struct x86_dev_info lenovo_yogabook_x90_info __initconst = {
 	.init = lenovo_yb1_x90_init,
 };
 
-/* Lenovo Yoga Book X91F/L Windows tablet needs manual instantiation of the fuel-gauge client */
+/* Lenovo Yoga Book X91F/L Windows tablet needs extra platform descriptions. */
 static const struct x86_i2c_client_info lenovo_yogabook_x91_i2c_clients[] __initconst = {
 	{
 		/* BQ27542 fuel-gauge */
@@ -315,6 +325,23 @@ static const struct x86_i2c_client_info lenovo_yogabook_x91_i2c_clients[] __init
 			.swnode = &fg_bq25890_supply_node,
 		},
 		.adapter_path = "\\_SB_.PCI0.I2C1",
+	}, {
+		/* The jack-detection IC is described as a secondary RT5677 resource. */
+		.board_info = {
+			.type = "ts3a227e",
+			.addr = 0x3b,
+			.dev_name = "ts3a227e",
+			.swnode = &lenovo_yb1_ts3a227e_node,
+		},
+		.adapter_path = "\\_SB_.PCI0.I2C1",
+		.irq_data = {
+			.type = X86_ACPI_IRQ_TYPE_GPIOINT,
+			.chip = "INT33FF:00",
+			.index = 77,
+			.trigger = ACPI_EDGE_SENSITIVE,
+			.polarity = ACPI_ACTIVE_LOW,
+			.con_id = "ts3a227e_irq",
+		},
 	},
 };
 
-- 
2.53.0