platform/x86: asus-wmi: Add support for ROG X13 tablet mode

Add quirk for ASUS ROG X13 Flow 2-in-1 to enable tablet mode with
lid flip (all screen rotations).

Signed-off-by: Luke D. Jones <luke@ljones.dev>
Link: https://lore.kernel.org/r/20220813092753.6635-2-luke@ljones.dev
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index fe2d072e1acc..5352055848d0 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -68,6 +68,7 @@ module_param(fnlock_default, bool, 0444);
 #define NOTIFY_KBD_FBM			0x99
 #define NOTIFY_KBD_TTP			0xae
 #define NOTIFY_LID_FLIP			0xfa
+#define NOTIFY_LID_FLIP_ROG		0xbd
 
 #define ASUS_WMI_FNLOCK_BIOS_DISABLED	BIT(0)
 
@@ -530,6 +531,19 @@ static int asus_wmi_input_init(struct asus_wmi *asus)
 			dev_err(dev, "Error checking for lid-flip: %d\n", result);
 		}
 		break;
+	case asus_wmi_lid_flip_rog_devid:
+		result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP_ROG);
+		if (result < 0)
+			asus->driver->quirks->tablet_switch_mode = asus_wmi_no_tablet_switch;
+		if (result >= 0) {
+			input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
+			input_report_switch(asus->inputdev, SW_TABLET_MODE, result);
+		} else if (result == -ENODEV) {
+			dev_err(dev, "This device has lid-flip-rog quirk but got ENODEV checking it. This is a bug.");
+		} else {
+			dev_err(dev, "Error checking for lid-flip: %d\n", result);
+		}
+		break;
 	}
 
 	err = input_register_device(asus->inputdev);
@@ -564,6 +578,17 @@ static void lid_flip_tablet_mode_get_state(struct asus_wmi *asus)
 	}
 }
 
+static void lid_flip_rog_tablet_mode_get_state(struct asus_wmi *asus)
+{
+	int result;
+
+	result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP_ROG);
+	if (result >= 0) {
+		input_report_switch(asus->inputdev, SW_TABLET_MODE, result);
+		input_sync(asus->inputdev);
+	}
+}
+
 /* dGPU ********************************************************************/
 static ssize_t dgpu_disable_show(struct device *dev,
 				   struct device_attribute *attr, char *buf)
@@ -3069,6 +3094,12 @@ static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
 		return;
 	}
 
+	if (asus->driver->quirks->tablet_switch_mode == asus_wmi_lid_flip_rog_devid &&
+	    code == NOTIFY_LID_FLIP_ROG) {
+		lid_flip_rog_tablet_mode_get_state(asus);
+		return;
+	}
+
 	if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) {
 		fan_boost_mode_switch_next(asus);
 		return;
@@ -3701,6 +3732,9 @@ static int asus_hotk_resume(struct device *device)
 	case asus_wmi_lid_flip_devid:
 		lid_flip_tablet_mode_get_state(asus);
 		break;
+	case asus_wmi_lid_flip_rog_devid:
+		lid_flip_rog_tablet_mode_get_state(asus);
+		break;
 	}
 
 	return 0;
@@ -3749,6 +3783,9 @@ static int asus_hotk_restore(struct device *device)
 	case asus_wmi_lid_flip_devid:
 		lid_flip_tablet_mode_get_state(asus);
 		break;
+	case asus_wmi_lid_flip_rog_devid:
+		lid_flip_rog_tablet_mode_get_state(asus);
+		break;
 	}
 
 	return 0;