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 | 20 |
1 files changed, 18 insertions, 2 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 8cdaa6eef5d3..4c844cfaa956 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c +++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c @@ -34,6 +34,9 @@ /* default DSC policy target bitrate limit is 16bpp */ static uint32_t dsc_policy_max_target_bpp_limit = 16; +/* default DSC policy enables DSC only when needed */ +static bool dsc_policy_enable_dsc_when_not_needed; + static uint32_t dc_dsc_bandwidth_in_kbps_from_timing( const struct dc_crtc_timing *timing) { @@ -189,8 +192,10 @@ static bool dsc_throughput_from_dpcd(int dpcd_throughput, int *throughput) } -static bool dsc_bpp_increment_div_from_dpcd(int bpp_increment_dpcd, uint32_t *bpp_increment_div) +static bool dsc_bpp_increment_div_from_dpcd(uint8_t bpp_increment_dpcd, uint32_t *bpp_increment_div) { + // Mask bpp increment dpcd field to avoid reading other fields + bpp_increment_dpcd &= 0x7; switch (bpp_increment_dpcd) { case 0: @@ -360,7 +365,7 @@ static bool decide_dsc_target_bpp_x16( get_dsc_bandwidth_range(policy->min_target_bpp, policy->max_target_bpp, dsc_common_caps, timing, &range); - if (target_bandwidth_kbps >= range.stream_kbps) { + if (!policy->enable_dsc_when_not_needed && target_bandwidth_kbps >= range.stream_kbps) { /* enough bandwidth without dsc */ *target_bpp_x16 = 0; should_use_dsc = false; @@ -961,9 +966,20 @@ void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing, struct dc /* 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; + + /* enable DSC when not needed, default false */ + if (dsc_policy_enable_dsc_when_not_needed) + policy->enable_dsc_when_not_needed = dsc_policy_enable_dsc_when_not_needed; + else + policy->enable_dsc_when_not_needed = false; } void dc_dsc_policy_set_max_target_bpp_limit(uint32_t limit) { dsc_policy_max_target_bpp_limit = limit; } + +void dc_dsc_policy_set_enable_dsc_when_not_needed(bool enable) +{ + dsc_policy_enable_dsc_when_not_needed = enable; +} |