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Commit cbba98f8 authored by Adam Jackson's avatar Adam Jackson Committed by Dave Airlie
Browse files

drm/edid: Add detailed block walk for VTB extensions 



Signed-off-by: default avatarAdam Jackson <ajax@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 4d76a221

drivers/gpu/drm/drm_edid.c

+16 −0
Original line number Diff line number Diff line
@@ -711,6 +711,19 @@ cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure) 
		cb((struct detailed_timing *)(det_base + 18 * i), closure);

}



static void

vtb_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure)

{

	unsigned int i, n = min((int)ext[0x02], 6);

	u8 *det_base = ext + 5;



	if (ext[0x01] != 1)

		return; /* unknown version */



	for (i = 0; i < n; i++)

		cb((struct detailed_timing *)(det_base + 18 * i), closure);

}



static void

drm_for_each_detailed_block(u8 *raw_edid, detailed_cb *cb, void *closure)

{
@@ -729,6 +742,9 @@ drm_for_each_detailed_block(u8 *raw_edid, detailed_cb *cb, void *closure) 
		case CEA_EXT:

			cea_for_each_detailed_block(ext, cb, closure);

			break;

		case VTB_EXT:

			vtb_for_each_detailed_block(ext, cb, closure);

			break;

		default:

			break;

		}