diff options
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dsc.h | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c | 69 |
2 files changed, 37 insertions, 37 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dsc.h b/drivers/gpu/drm/amd/display/dc/dc_dsc.h index 16cc76ce3739..c8cc6a448c36 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dsc.h +++ b/drivers/gpu/drm/amd/display/dc/dc_dsc.h @@ -81,6 +81,11 @@ bool dc_dsc_compute_config( uint32_t dc_dsc_stream_bandwidth_in_kbps(const struct dc_crtc_timing *timing, uint32_t bpp_x16, uint32_t num_slices_h, bool is_dp); +uint32_t dc_dsc_stream_bandwidth_overhead_in_kbps( + const struct dc_crtc_timing *timing, + const int num_slices_h, + const bool is_dp); + 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); 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 f5b7da0e64c0..1e30a742ae01 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c +++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c @@ -76,11 +76,6 @@ static bool setup_dsc_config( int max_dsc_target_bpp_limit_override_x16, struct dc_dsc_config *dsc_cfg); -static struct fixed31_32 compute_dsc_max_bandwidth_overhead( - const struct dc_crtc_timing *timing, - const int num_slices_h, - const bool is_dp); - static bool dsc_buff_block_size_from_dpcd(int dpcd_buff_block_size, int *buff_block_size) { @@ -462,32 +457,6 @@ static inline uint32_t dsc_div_by_10_round_up(uint32_t value) return (value + 9) / 10; } -static struct fixed31_32 compute_dsc_max_bandwidth_overhead( - const struct dc_crtc_timing *timing, - const int num_slices_h, - const bool is_dp) -{ - struct fixed31_32 max_dsc_overhead; - struct fixed31_32 refresh_rate; - - if (dsc_policy_disable_dsc_stream_overhead || !is_dp) - return dc_fixpt_from_int(0); - - /* use target bpp that can take entire target bandwidth */ - refresh_rate = dc_fixpt_from_int(timing->pix_clk_100hz); - refresh_rate = dc_fixpt_div_int(refresh_rate, timing->h_total); - refresh_rate = dc_fixpt_div_int(refresh_rate, timing->v_total); - refresh_rate = dc_fixpt_mul_int(refresh_rate, 100); - - max_dsc_overhead = dc_fixpt_from_int(num_slices_h); - max_dsc_overhead = dc_fixpt_mul_int(max_dsc_overhead, timing->v_total); - max_dsc_overhead = dc_fixpt_mul_int(max_dsc_overhead, 256); - max_dsc_overhead = dc_fixpt_div_int(max_dsc_overhead, 1000); - max_dsc_overhead = dc_fixpt_mul(max_dsc_overhead, refresh_rate); - - return max_dsc_overhead; -} - static uint32_t compute_bpp_x16_from_target_bandwidth( const uint32_t bandwidth_in_kbps, const struct dc_crtc_timing *timing, @@ -495,14 +464,14 @@ static uint32_t compute_bpp_x16_from_target_bandwidth( const uint32_t bpp_increment_div, const bool is_dp) { - struct fixed31_32 overhead_in_kbps; + uint32_t overhead_in_kbps; struct fixed31_32 effective_bandwidth_in_kbps; struct fixed31_32 bpp_x16; - overhead_in_kbps = compute_dsc_max_bandwidth_overhead( + overhead_in_kbps = dc_dsc_stream_bandwidth_overhead_in_kbps( timing, num_slices_h, is_dp); effective_bandwidth_in_kbps = dc_fixpt_from_int(bandwidth_in_kbps); - effective_bandwidth_in_kbps = dc_fixpt_sub(effective_bandwidth_in_kbps, + effective_bandwidth_in_kbps = dc_fixpt_sub_int(effective_bandwidth_in_kbps, overhead_in_kbps); bpp_x16 = dc_fixpt_mul_int(effective_bandwidth_in_kbps, 10); bpp_x16 = dc_fixpt_div_int(bpp_x16, timing->pix_clk_100hz); @@ -994,19 +963,45 @@ bool dc_dsc_compute_config( uint32_t dc_dsc_stream_bandwidth_in_kbps(const struct dc_crtc_timing *timing, uint32_t bpp_x16, uint32_t num_slices_h, bool is_dp) { - struct fixed31_32 overhead_in_kbps; + uint32_t overhead_in_kbps; struct fixed31_32 bpp; struct fixed31_32 actual_bandwidth_in_kbps; - overhead_in_kbps = compute_dsc_max_bandwidth_overhead( + overhead_in_kbps = dc_dsc_stream_bandwidth_overhead_in_kbps( timing, num_slices_h, is_dp); bpp = dc_fixpt_from_fraction(bpp_x16, 16); actual_bandwidth_in_kbps = dc_fixpt_from_fraction(timing->pix_clk_100hz, 10); actual_bandwidth_in_kbps = dc_fixpt_mul(actual_bandwidth_in_kbps, bpp); - actual_bandwidth_in_kbps = dc_fixpt_add(actual_bandwidth_in_kbps, overhead_in_kbps); + actual_bandwidth_in_kbps = dc_fixpt_add_int(actual_bandwidth_in_kbps, overhead_in_kbps); return dc_fixpt_ceil(actual_bandwidth_in_kbps); } +uint32_t dc_dsc_stream_bandwidth_overhead_in_kbps( + const struct dc_crtc_timing *timing, + const int num_slices_h, + const bool is_dp) +{ + struct fixed31_32 max_dsc_overhead; + struct fixed31_32 refresh_rate; + + if (dsc_policy_disable_dsc_stream_overhead || !is_dp) + return 0; + + /* use target bpp that can take entire target bandwidth */ + refresh_rate = dc_fixpt_from_int(timing->pix_clk_100hz); + refresh_rate = dc_fixpt_div_int(refresh_rate, timing->h_total); + refresh_rate = dc_fixpt_div_int(refresh_rate, timing->v_total); + refresh_rate = dc_fixpt_mul_int(refresh_rate, 100); + + max_dsc_overhead = dc_fixpt_from_int(num_slices_h); + max_dsc_overhead = dc_fixpt_mul_int(max_dsc_overhead, timing->v_total); + max_dsc_overhead = dc_fixpt_mul_int(max_dsc_overhead, 256); + max_dsc_overhead = dc_fixpt_div_int(max_dsc_overhead, 1000); + max_dsc_overhead = dc_fixpt_mul(max_dsc_overhead, refresh_rate); + + return dc_fixpt_ceil(max_dsc_overhead); +} + 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) |