platform/x86: x86-android-tablets: Fix Bluetooth on Lenovo Yoga Book

The Lenovo Yoga Book yb1-x90f/l has (another) bug in its DSDT where
the UART resource for the BTH0 ACPI device contains
"\\_SB.PCIO.URT1" as path to the UART.

Note that is with a letter 'O' instead of the number '0' which is wrong.

Add a x86_serdev_info entry to make the x86-android-tablets module
manually setup the /sys/bus/serial device for the Bluetooth UART
to fix Bluetooth not working due to this bug.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230429180230.97716-1-hdegoede@redhat.com

diff --git a/drivers/platform/x86/x86-android-tablets/lenovo.c b/drivers/platform/x86/x86-android-tablets/lenovo.c
index 0297b4c..270c471 100644 (file)
--- a/drivers/platform/x86/x86-android-tablets/lenovo.c
+++ b/drivers/platform/x86/x86-android-tablets/lenovo.c
@@ -147,6 +147,19 @@ static const struct platform_device_info lenovo_yb1_x90_pdevs[] __initconst = {
        },
 };
 
+/*
+ * DSDT says UART path is "\\_SB.PCIO.URT1" with a letter 'O' instead of
+ * the number '0' add the link manually.
+ */
+static const struct x86_serdev_info lenovo_yb1_x90_serdevs[] __initconst = {
+       {
+               .ctrl_hid = "8086228A",
+               .ctrl_uid = "1",
+               .ctrl_devname = "serial0",
+               .serdev_hid = "BCM2E1A",
+       },
+};
+
 static struct gpiod_lookup_table lenovo_yb1_x90_goodix_gpios = {
        .dev_id = "i2c-goodix_ts",
        .table = {
@@ -203,6 +216,8 @@ const struct x86_dev_info lenovo_yogabook_x90_info __initconst = {
        .i2c_client_count = ARRAY_SIZE(lenovo_yb1_x90_i2c_clients),
        .pdev_info = lenovo_yb1_x90_pdevs,
        .pdev_count = ARRAY_SIZE(lenovo_yb1_x90_pdevs),
+       .serdev_info = lenovo_yb1_x90_serdevs,
+       .serdev_count = ARRAY_SIZE(lenovo_yb1_x90_serdevs),
        .gpiod_lookup_tables = lenovo_yb1_x90_gpios,
        .init = lenovo_yb1_x90_init,
 };