diff --git a/drivers/gpu/drm/amd/display/dc/dc_dsc.h b/drivers/gpu/drm/amd/display/dc/dc_dsc.h index ec55b77727d5..e99273bff46d 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dsc.h +++ b/drivers/gpu/drm/amd/display/dc/dc_dsc.h @@ -51,6 +51,7 @@ struct dc_dsc_policy { int min_slice_height; // Must not be less than 8 uint32_t max_target_bpp; uint32_t min_target_bpp; + uint32_t preferred_bpp_x16; bool enable_dsc_when_not_needed; }; @@ -62,8 +63,8 @@ bool dc_dsc_parse_dsc_dpcd(const struct dc *dc, bool dc_dsc_compute_bandwidth_range( const struct display_stream_compressor *dsc, uint32_t dsc_min_slice_height_override, - uint32_t min_bpp, - uint32_t max_bpp, + uint32_t min_bpp_x16, + uint32_t max_bpp_x16, const struct dsc_dec_dpcd_caps *dsc_sink_caps, const struct dc_crtc_timing *timing, struct dc_dsc_bw_range *range); @@ -78,7 +79,7 @@ bool dc_dsc_compute_config( struct dc_dsc_config *dsc_cfg); void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing, - uint32_t max_target_bpp_limit_override, + uint32_t max_target_bpp_limit_override_x16, struct dc_dsc_policy *policy); void dc_dsc_policy_set_max_target_bpp_limit(uint32_t limit); diff --git a/drivers/gpu/drm/amd/display/dc/dc_hw_types.h b/drivers/gpu/drm/amd/display/dc/dc_hw_types.h index b41e6367b15e..09e8be5f7a1e 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_hw_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_hw_types.h @@ -769,6 +769,7 @@ struct dc_crtc_timing { #endif struct dc_crtc_timing_flags flags; + uint32_t dsc_fixed_bits_per_pixel_x16; /* DSC target bitrate in 1/16 of bpp (e.g. 128 -> 8bpp) */ struct dc_dsc_config dsc_cfg; }; diff --git a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c index c62d0eddc9c6..82a805088204 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c +++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c @@ -369,6 +369,11 @@ static bool decide_dsc_target_bpp_x16( /* enough bandwidth without dsc */ *target_bpp_x16 = 0; should_use_dsc = false; + } else if (policy->preferred_bpp_x16 > 0 && + policy->preferred_bpp_x16 <= range.max_target_bpp_x16 && + policy->preferred_bpp_x16 >= range.min_target_bpp_x16) { + *target_bpp_x16 = policy->preferred_bpp_x16; + should_use_dsc = true; } else if (target_bandwidth_kbps >= range.max_kbps) { /* use max target bpp allowed */ *target_bpp_x16 = range.max_target_bpp_x16; @@ -545,7 +550,7 @@ static bool setup_dsc_config( int target_bandwidth_kbps, const struct dc_crtc_timing *timing, int min_slice_height_override, - int max_dsc_target_bpp_limit_override, + int max_dsc_target_bpp_limit_override_x16, struct dc_dsc_config *dsc_cfg) { struct dsc_enc_caps dsc_common_caps; @@ -564,7 +569,7 @@ static bool setup_dsc_config( memset(dsc_cfg, 0, sizeof(struct dc_dsc_config)); - dc_dsc_get_policy_for_timing(timing, max_dsc_target_bpp_limit_override, &policy); + dc_dsc_get_policy_for_timing(timing, max_dsc_target_bpp_limit_override_x16, &policy); pic_width = timing->h_addressable + timing->h_border_left + timing->h_border_right; pic_height = timing->v_addressable + timing->v_border_top + timing->v_border_bottom; @@ -865,8 +870,8 @@ bool dc_dsc_parse_dsc_dpcd(const struct dc *dc, const uint8_t *dpcd_dsc_basic_da bool dc_dsc_compute_bandwidth_range( const struct display_stream_compressor *dsc, uint32_t dsc_min_slice_height_override, - uint32_t min_bpp, - uint32_t max_bpp, + uint32_t min_bpp_x16, + uint32_t max_bpp_x16, const struct dsc_dec_dpcd_caps *dsc_sink_caps, const struct dc_crtc_timing *timing, struct dc_dsc_bw_range *range) @@ -883,10 +888,10 @@ bool dc_dsc_compute_bandwidth_range( if (is_dsc_possible) is_dsc_possible = setup_dsc_config(dsc_sink_caps, &dsc_enc_caps, 0, timing, - dsc_min_slice_height_override, max_bpp, &config); + dsc_min_slice_height_override, max_bpp_x16, &config); if (is_dsc_possible) - get_dsc_bandwidth_range(min_bpp, max_bpp, &dsc_common_caps, timing, range); + get_dsc_bandwidth_range(min_bpp_x16, max_bpp_x16, &dsc_common_caps, timing, range); return is_dsc_possible; } @@ -895,7 +900,7 @@ bool dc_dsc_compute_config( const struct display_stream_compressor *dsc, const struct dsc_dec_dpcd_caps *dsc_sink_caps, uint32_t dsc_min_slice_height_override, - uint32_t max_target_bpp_limit_override, + uint32_t max_target_bpp_limit_override_x16, uint32_t target_bandwidth_kbps, const struct dc_crtc_timing *timing, struct dc_dsc_config *dsc_cfg) @@ -908,11 +913,11 @@ bool dc_dsc_compute_config( &dsc_enc_caps, target_bandwidth_kbps, timing, dsc_min_slice_height_override, - max_target_bpp_limit_override, dsc_cfg); + max_target_bpp_limit_override_x16, dsc_cfg); return is_dsc_possible; } -void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing, uint32_t max_target_bpp_limit_override, struct dc_dsc_policy *policy) +void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing, uint32_t max_target_bpp_limit_override_x16, struct dc_dsc_policy *policy) { uint32_t bpc = 0; @@ -967,13 +972,15 @@ void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing, uint32_t return; } + policy->preferred_bpp_x16 = timing->dsc_fixed_bits_per_pixel_x16; + /* internal upper limit, default 16 bpp */ if (policy->max_target_bpp > dsc_policy_max_target_bpp_limit) policy->max_target_bpp = dsc_policy_max_target_bpp_limit; /* apply override */ - if (max_target_bpp_limit_override && policy->max_target_bpp > max_target_bpp_limit_override) - policy->max_target_bpp = max_target_bpp_limit_override; + if (max_target_bpp_limit_override_x16 && policy->max_target_bpp > max_target_bpp_limit_override_x16 / 16) + policy->max_target_bpp = max_target_bpp_limit_override_x16 / 16; /* enable DSC when not needed, default false */ if (dsc_policy_enable_dsc_when_not_needed)