diff options
| author | Michael Strauss <michael.strauss@amd.com> | 2022-08-17 10:57:10 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-08-29 17:58:47 -0400 |
| commit | 280f1884892f3825d2060df43dd1d452c585cd0e (patch) | |
| tree | 635110292ff8be426dbdba89083dfde2f74bbcb0 | |
| parent | 36ad2ec9802f9613f5d2a4fce10c9452f0a28492 (diff) | |
drm/amd/display: Add DC debug option to force LTTPR mode
[WHY]
Useful for external teams debugging LTTPR issues
Reviewed-by: George Shen <George.Shen@amd.com>
Acked-by: Brian Chang <Brian.Chang@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index 4c04b5f8eb94..d2bdf3939cf9 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -5032,6 +5032,10 @@ static void determine_lttpr_mode(struct dc_link *link) bool vbios_lttpr_enable = link->dc->caps.vbios_lttpr_enable; bool vbios_lttpr_interop = link->dc->caps.vbios_lttpr_aware; + if (link->ctx->dc->debug.lttpr_mode_override != 0) { + link->lttpr_mode = link->ctx->dc->debug.lttpr_mode_override; + return; + } if ((link->dc->config.allow_lttpr_non_transparent_mode.bits.DP2_0 && link->dpcd_caps.channel_coding_cap.bits.DP_128b_132b_SUPPORTED)) { diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 2362d5ee2401..473e6a0c3310 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -846,6 +846,7 @@ struct dc_debug_options { bool exit_idle_opt_for_cursor_updates; bool enable_single_display_2to1_odm_policy; bool enable_dp_dig_pixel_rate_div_policy; + enum lttpr_mode lttpr_mode_override; }; struct gpu_info_soc_bounding_box_v1_0; |