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drm/amd/display: Add code comments clock and encode code

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This commit adds some comments to make easier to understand the clock
update for DCN 201, the encode function, and other minor comments.

Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rodrigo Siqueira
2024-03-22 16:53:14 -06:00
committed by Alex Deucher
parent 71fb6ed2e7
commit f3736c0d97
4 changed files with 16 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn201/dcn201_clk_mgr.c
+11
View File
@@ -100,7 +100,15 @@ static void dcn201_update_clocks(struct clk_mgr *clk_mgr_base,
if (clk_mgr_base->clks.dispclk_khz == 0 ||
dc->debug.force_clock_mode & 0x1) {
/* this is from resume or boot up, if forced_clock cfg option
* used, we bypass program dispclk and DPPCLK, but need set them
* for S3.
*/
force_reset = true;
/* force_clock_mode 0x1: force reset the clock even it is the
* same clock as long as it is in Passive level.
*/
dcn2_read_clocks_from_hw_dentist(clk_mgr_base);
}
@@ -150,11 +158,14 @@ static void dcn201_update_clocks(struct clk_mgr *clk_mgr_base,
if (dc->config.forced_clocks == false || (force_reset && safe_to_lower)) {
if (dpp_clock_lowered) {
// if clock is being lowered, increase DTO before lowering refclk
dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
dcn20_update_clocks_update_dentist(clk_mgr, context);
} else {
// if clock is being raised, increase refclk before lowering DTO
if (update_dppclk || update_dispclk)
dcn20_update_clocks_update_dentist(clk_mgr, context);
// always update dtos unless clock is lowered and not safe to lower
dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
}
}
drivers/gpu/drm/amd/display/dc/dcn201/dcn201_hubbub.c
+1 -1
View File
@@ -103,5 +103,5 @@ void hubbub201_construct(struct dcn20_hubbub *hubbub,
hubbub->masks = hubbub_mask;
hubbub->debug_test_index_pstate = 0xB;
hubbub->detile_buf_size = 164 * 1024;
hubbub->detile_buf_size = 164 * 1024; /* 164KB for DCN2.0 */
}
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hpo_dp_stream_encoder.c
+4
View File
@@ -474,6 +474,10 @@ static void dcn31_hpo_dp_stream_enc_update_dp_info_packets(
&info_frame->hdrsmd,
true);
/* packetIndex 4 is used for send immediate sdp message, and please
* use other packetIndex (such as 5,6) for other info packet
*/
if (info_frame->adaptive_sync.valid)
enc->vpg->funcs->update_generic_info_packet(
enc->vpg,
drivers/gpu/drm/amd/display/dc/resource/Makefile
-6
View File
@@ -102,10 +102,6 @@ AMD_DISPLAY_FILES += $(AMD_DAL_RESOURCE_DCN21)
###############################################################################
###############################################################################
###############################################################################
RESOURCE_DCN30 = dcn30_resource.o
AMD_DAL_RESOURCE_DCN30 = $(addprefix $(AMDDALPATH)/dc/resource/dcn30/,$(RESOURCE_DCN30))
@@ -202,6 +198,4 @@ AMD_DISPLAY_FILES += $(AMD_DAL_RESOURCE_DCN351)
###############################################################################
###############################################################################
endif