Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-11 06:31:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: Fix DP Compliance tests 4.3.2.1 and 4.3.2.2

Browse Source 
[Why]
Test expects that we also read HPD_IRQ_VECTOR when checking for
symbol loss as well lane status.

[How]
Read bytes 0x200-0x205 instead of just 0x202-0x205

Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Aric Cyr 2020-07-22 15:40:06 -04:00 committed by Alex Deucher
parent b5fe6aa2b0
commit 76d5ef4ff1
1 changed files with 6 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
View File

@ -1138,23 +1138,22 @@ static enum link_training_result check_link_loss_status(
const struct link_training_settings *link_training_setting)
{
enum link_training_result status = LINK_TRAINING_SUCCESS;
unsigned int lane01_status_address = DP_LANE0_1_STATUS;
union lane_status lane_status;
uint8_t dpcd_buf[4] = {0};
uint8_t dpcd_buf[6] = {0};
uint32_t lane;
core_link_read_dpcd(
link,
lane01_status_address,
(uint8_t *)(dpcd_buf),
sizeof(dpcd_buf));
link,
DP_SINK_COUNT,
(uint8_t *)(dpcd_buf),
sizeof(dpcd_buf));
/*parse lane status*/
for (lane = 0; lane < link->cur_link_settings.lane_count; lane++) {
/*
* check lanes status
*/
lane_status.raw = get_nibble_at_index(&dpcd_buf[0], lane);
lane_status.raw = get_nibble_at_index(&dpcd_buf[2], lane);
if (!lane_status.bits.CHANNEL_EQ_DONE_0 ||
!lane_status.bits.CR_DONE_0 ||