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Commit 97412a7a authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
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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: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 47aef7a8

drivers/gpu/drm/radeon/atombios_dp.c

+3 −3
Original line number Diff line number Diff line
@@ -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;