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drm/amd/display: Added debug option for forcing subvp num ways

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[Description]
Regkey option for forcing num ways for subvp for debug purposes

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Pavle Kotarac <Pavle.Kotarac@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lee, Alvin 2022-08-25 16:05:03 -04:00 committed by Alex Deucher
parent 43080c9b75
commit 5c1a431aaf
2 changed files with 9 additions and 3 deletions
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1
drivers/gpu/drm/amd/display/dc/dc.h
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@ -831,6 +831,7 @@ struct dc_debug_options {
bool force_disable_subvp;
bool force_subvp_mclk_switch;
bool allow_sw_cursor_fallback;
unsigned int force_subvp_num_ways;
bool force_usr_allow;
/* uses value at boot and disables switch */
bool disable_dtb_ref_clk_switch;

11
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
View File

@ -54,13 +54,14 @@ uint32_t dcn32_helper_calculate_num_ways_for_subvp(struct dc *dc, struct dc_stat
uint32_t num_mblks = 0;
uint32_t cache_lines_per_plane = 0;
uint32_t i = 0, j = 0;
uint32_t mblk_width = 0;
uint32_t mblk_height = 0;
uint16_t mblk_width = 0;
uint16_t mblk_height = 0;
uint32_t full_vp_width_blk_aligned = 0;
uint32_t full_vp_height_blk_aligned = 0;
uint32_t mall_alloc_width_blk_aligned = 0;
uint32_t mall_alloc_height_blk_aligned = 0;
uint32_t full_vp_height = 0;
uint16_t full_vp_height = 0;
bool subvp_in_use = false;
for (i = 0; i < dc->res_pool->pipe_count; i++) {
struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
@ -70,6 +71,7 @@ uint32_t dcn32_helper_calculate_num_ways_for_subvp(struct dc *dc, struct dc_stat
pipe->stream->mall_stream_config.type == SUBVP_PHANTOM) {
struct pipe_ctx *main_pipe = NULL;
subvp_in_use = true;
/* Get full viewport height from main pipe (required for MBLK calculation) */
for (j = 0; j < dc->res_pool->pipe_count; j++) {
main_pipe = &context->res_ctx.pipe_ctx[j];
@ -129,6 +131,9 @@ uint32_t dcn32_helper_calculate_num_ways_for_subvp(struct dc *dc, struct dc_stat
if (cache_lines_used % lines_per_way > 0)
num_ways++;
if (subvp_in_use && dc->debug.force_subvp_num_ways > 0)
num_ways = dc->debug.force_subvp_num_ways;
return num_ways;
}