diff options
| author | Marco Chiappero <marco@absence.it> | 2012-06-09 13:18:09 +0900 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2012-06-26 14:43:05 -0400 |
| commit | bb384b5295323ed58260aeaff22d8bbe32988396 (patch) | |
| tree | a5c0716449ec56c78f22ebf8cecdc95e4f12d8b3 /drivers/platform | |
| parent | 4069d6f86bebce1a1e3456ef721511b4b81958f8 (diff) | |
| download | linux-bb384b5295323ed58260aeaff22d8bbe32988396.tar.bz2 | |
sony-laptop: notify userspace of GFX switch position changes
Some Vaios come with both integrated and discrete graphics, plus a
switch for choosing one of the two. When the switch position is changed,
a notification is generated.
Signed-off-by: Marco Chiappero <marco@absence.it>
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/sony-laptop.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index 615ab06b6cd3..4f42e5661bf5 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -1174,7 +1174,8 @@ static int sony_nc_hotkeys_decode(u32 event, unsigned int handle) */ enum event_types { HOTKEY = 1, - KILLSWITCH + KILLSWITCH, + GFX_SWITCH }; static void sony_nc_notify(struct acpi_device *device, u32 event) { @@ -1230,6 +1231,24 @@ static void sony_nc_notify(struct acpi_device *device, u32 event) break; + case 0x0128: + case 0x0146: + /* Hybrid GFX switching */ + sony_call_snc_handle(handle, 0x0000, &result); + dprintk("GFX switch event received (reason: %s)\n", + (result & 0x01) ? + "switch change" : "unknown"); + + /* verify the switch state + * 1: discrete GFX + * 0: integrated GFX + */ + sony_call_snc_handle(handle, 0x0100, &result); + + ev_type = GFX_SWITCH; + real_ev = result & 0xff; + break; + default: dprintk("Unknown event 0x%x for handle 0x%x\n", event, handle); |