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>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 191218ad92e7..6c62be226804 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -63,12 +63,12 @@ static int radeon_process_aux_ch(struct radeon_i2c_chan *chan,
 
         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;