platform/x86: x86-android-tablets: Add Wacom digitizer info for Lenovo Yoga Book

The Lenovo Yoga Book has a wacom digitizer in its keyboard half,
add the necessary info to instantiate an i2c_client for the digitizer.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230416212841.311152-2-hdegoede@redhat.com

diff --git a/drivers/platform/x86/x86-android-tablets/lenovo.c b/drivers/platform/x86/x86-android-tablets/lenovo.c
index b5dd74b..438de8b 100644 (file)
--- a/drivers/platform/x86/x86-android-tablets/lenovo.c
+++ b/drivers/platform/x86/x86-android-tablets/lenovo.c
@@ -40,6 +40,16 @@ static struct lp855x_platform_data lenovo_lp8557_pdata = {
 
 /* Lenovo Yoga Book X90F / X90L's Android factory img has everything hardcoded */
 
+static const struct property_entry lenovo_yb1_x90_wacom_props[] = {
+       PROPERTY_ENTRY_U32("hid-descr-addr", 0x0001),
+       PROPERTY_ENTRY_U32("post-reset-deassert-delay-ms", 150),
+       { }
+};
+
+static const struct software_node lenovo_yb1_x90_wacom_node = {
+       .properties = lenovo_yb1_x90_wacom_props,
+};
+
 /*
  * The HiDeep IST940E touchscreen comes up in I2C-HID mode. The native protocol
  * reports ABS_MT_PRESSURE and ABS_MT_TOUCH_MAJOR which are not reported in HID
@@ -87,6 +97,22 @@ static const struct x86_i2c_client_info lenovo_yb1_x90_i2c_clients[] __initconst
                        .polarity = ACPI_ACTIVE_LOW,
                },
        }, {
+               /* Wacom Digitizer in keyboard half */
+               .board_info = {
+                       .type = "hid-over-i2c",
+                       .addr = 0x09,
+                       .dev_name = "wacom",
+                       .swnode = &lenovo_yb1_x90_wacom_node,
+               },
+               .adapter_path = "\\_SB_.PCI0.I2C4",
+               .irq_data = {
+                       .type = X86_ACPI_IRQ_TYPE_GPIOINT,
+                       .chip = "INT33FF:01",
+                       .index = 49,
+                       .trigger = ACPI_LEVEL_SENSITIVE,
+                       .polarity = ACPI_ACTIVE_LOW,
+               },
+       }, {
                /* LP8557 Backlight controller */
                .board_info = {
                        .type = "lp8557",
@@ -131,9 +157,18 @@ static struct gpiod_lookup_table lenovo_yb1_x90_hideep_gpios = {
        },
 };
 
+static struct gpiod_lookup_table lenovo_yb1_x90_wacom_gpios = {
+       .dev_id = "i2c-wacom",
+       .table = {
+               GPIO_LOOKUP("INT33FF:00", 82, "reset", GPIO_ACTIVE_LOW),
+               { }
+       },
+};
+
 static struct gpiod_lookup_table * const lenovo_yb1_x90_gpios[] = {
        &lenovo_yb1_x90_hideep_gpios,
        &lenovo_yb1_x90_goodix_gpios,
+       &lenovo_yb1_x90_wacom_gpios,
        NULL
 };