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surfacepro3_button: Add a warning when switching to tablet mode

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Microsoft Surface Book has a tablet mode button. Print another message
once on this event instead of repeating "Unknown event...".

Unfortunately, proper support involves the _DSM method, which is not a
discoverable interface. Just print a warning for now.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2016-05-10 14:49:55 +03:00 committed by Darren Hart
parent ddd9357f60
commit e27ffe7e41
1 changed files with 7 additions and 2 deletions
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5
drivers/platform/x86/surfacepro3_button.c
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@ -24,6 +24,8 @@
#define SURFACE_BUTTON_OBJ_NAME "VGBI"
#define SURFACE_BUTTON_DEVICE_NAME "Surface Pro 3/4 Buttons"
#define SURFACE_BUTTON_NOTIFY_TABLET_MODE 0xc8
#define SURFACE_BUTTON_NOTIFY_PRESS_POWER 0xc6
#define SURFACE_BUTTON_NOTIFY_RELEASE_POWER 0xc7
@ -105,6 +107,9 @@ static void surface_button_notify(struct acpi_device *device, u32 event)
case SURFACE_BUTTON_NOTIFY_RELEASE_VOLUME_DOWN:
key_code = KEY_VOLUMEDOWN;
break;
case SURFACE_BUTTON_NOTIFY_TABLET_MODE:
dev_warn_once(&device->dev, "Tablet mode is not supported\n");
break;
default:
dev_info_ratelimited(&device->dev,
"Unsupported event [0x%x]\n", event);