diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c | 33 |
1 files changed, 29 insertions, 4 deletions
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 d2423ad1fac2..8b78fcbfe746 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c +++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c @@ -29,6 +29,9 @@ /* This module's internal functions */ +/* default DSC policy target bitrate limit is 16bpp */ +static uint32_t dsc_policy_max_target_bpp_limit = 16; + static uint32_t dc_dsc_bandwidth_in_kbps_from_timing( const struct dc_crtc_timing *timing) { @@ -757,7 +760,7 @@ done: return is_dsc_possible; } -bool dc_dsc_parse_dsc_dpcd(const uint8_t *dpcd_dsc_basic_data, const uint8_t *dpcd_dsc_ext_data, struct dsc_dec_dpcd_caps *dsc_sink_caps) +bool dc_dsc_parse_dsc_dpcd(const struct dc *dc, const uint8_t *dpcd_dsc_basic_data, const uint8_t *dpcd_dsc_ext_data, struct dsc_dec_dpcd_caps *dsc_sink_caps) { if (!dpcd_dsc_basic_data) return false; @@ -810,6 +813,23 @@ bool dc_dsc_parse_dsc_dpcd(const uint8_t *dpcd_dsc_basic_data, const uint8_t *dp if (!dsc_bpp_increment_div_from_dpcd(dpcd_dsc_basic_data[DP_DSC_BITS_PER_PIXEL_INC - DP_DSC_SUPPORT], &dsc_sink_caps->bpp_increment_div)) return false; + if (dc->debug.dsc_bpp_increment_div) { + /* dsc_bpp_increment_div should onl be 1, 2, 4, 8 or 16, but rather than rejecting invalid values, + * we'll accept all and get it into range. This also makes the above check against 0 redundant, + * but that one stresses out the override will be only used if it's not 0. + */ + if (dc->debug.dsc_bpp_increment_div >= 1) + dsc_sink_caps->bpp_increment_div = 1; + if (dc->debug.dsc_bpp_increment_div >= 2) + dsc_sink_caps->bpp_increment_div = 2; + if (dc->debug.dsc_bpp_increment_div >= 4) + dsc_sink_caps->bpp_increment_div = 4; + if (dc->debug.dsc_bpp_increment_div >= 8) + dsc_sink_caps->bpp_increment_div = 8; + if (dc->debug.dsc_bpp_increment_div >= 16) + dsc_sink_caps->bpp_increment_div = 16; + } + /* Extended caps */ if (dpcd_dsc_ext_data == NULL) { // Extended DPCD DSC data can be null, e.g. because it doesn't apply to SST dsc_sink_caps->branch_overall_throughput_0_mps = 0; @@ -951,7 +971,12 @@ void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing, struct dc default: return; } - /* internal upper limit to 16 bpp */ - if (policy->max_target_bpp > 16) - policy->max_target_bpp = 16; + /* 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; +} + +void dc_dsc_policy_set_max_target_bpp_limit(uint32_t limit) +{ + dsc_policy_max_target_bpp_limit = limit; } |