diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_dp.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_dp.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 552b436451fd..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; @@ -746,7 +746,8 @@ static int radeon_dp_link_train_init(struct radeon_dp_link_train_info *dp_info) /* set the lane count on the sink */ tmp = dp_info->dp_lane_count; - if (dp_info->dpcd[0] >= 0x11) + if (dp_info->dpcd[DP_DPCD_REV] >= 0x11 && + dp_info->dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP) tmp |= DP_LANE_COUNT_ENHANCED_FRAME_EN; radeon_write_dpcd_reg(dp_info->radeon_connector, DP_LANE_COUNT_SET, tmp); |