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Commit bb384b52 authored by Marco Chiappero's avatar Marco Chiappero Committed by Matthew Garrett
Browse files

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: default avatarMarco Chiappero <marco@absence.it>
Signed-off-by: default avatarMattia Dongili <malattia@linux.it>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent 4069d6f8

drivers/platform/x86/sony-laptop.c

+20 −1
Original line number Diff line number Diff line
@@ -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);