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drm/amd/display: Add debugfs interface for ODM combine info

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[Why]
For use with IGT tests in userspace, the number of ODM segments in use
is required to be exposed to userspace to verify that ODM Combine is
working as expected when special timings are committed.

[How]
Add a connector specific debugfs entry that prints the number of ODM
segments in use.

Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Aurabindo Pillai
2023-08-16 16:03:20 -04:00
committed by Alex Deucher
parent d755ce6465
commit 07926ba8a4
4 changed files with 59 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_optc.c
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@@ -98,6 +98,30 @@ static void optc32_set_odm_combine(struct timing_generator *optc, int *opp_id, i
optc1->opp_count = opp_cnt;
}
void optc32_get_odm_combine_segments(struct timing_generator *tg, int *odm_combine_segments)
{
struct optc *optc1 = DCN10TG_FROM_TG(tg);
int segments;
REG_GET(OPTC_DATA_SOURCE_SELECT, OPTC_NUM_OF_INPUT_SEGMENT, &segments);
switch (segments) {
case 0:
*odm_combine_segments = 1;
break;
case 1:
*odm_combine_segments = 2;
break;
case 3:
*odm_combine_segments = 4;
break;
/* 2 is reserved */
case 2:
default:
*odm_combine_segments = -1;
}
}
void optc32_set_h_timing_div_manual_mode(struct timing_generator *optc, bool manual_mode)
{
struct optc *optc1 = DCN10TG_FROM_TG(optc);
@@ -303,6 +327,7 @@ static struct timing_generator_funcs dcn32_tg_funcs = {
.set_dwb_source = NULL,
.set_odm_bypass = optc32_set_odm_bypass,
.set_odm_combine = optc32_set_odm_combine,
.get_odm_combine_segments = optc32_get_odm_combine_segments,
.set_h_timing_div_manual_mode = optc32_set_h_timing_div_manual_mode,
.get_optc_source = optc2_get_optc_source,
.set_out_mux = optc3_set_out_mux,