drm/radeon/kms: DP aux updates for DCE6
DCE6 requires a non-0 value for lpAuxRequest for the
ProcessAuxChannelTransaction command table. Setting
lpAuxRequest to 0 is a special case used by AsicInit
for setting up the aux pads.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 191218a..6c62be2 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -63,12 +63,12 @@
memset(&args, 0, sizeof(args));
- base = (unsigned char *)rdev->mode_info.atom_context->scratch;
+ base = (unsigned char *)(rdev->mode_info.atom_context->scratch + 1);
memcpy(base, send, send_bytes);
- args.v1.lpAuxRequest = 0;
- args.v1.lpDataOut = 16;
+ args.v1.lpAuxRequest = 0 + 4;
+ args.v1.lpDataOut = 16 + 4;
args.v1.ucDataOutLen = 0;
args.v1.ucChannelID = chan->rec.i2c_id;
args.v1.ucDelay = delay / 10;