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 | 86 |
1 files changed, 74 insertions, 12 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 d52cbc0e9b67..2bdc47615543 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c +++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c @@ -47,6 +47,59 @@ static bool dsc_policy_disable_dsc_stream_overhead; #define MIN(X, Y) ((X) < (Y) ? (X) : (Y)) #endif +uint32_t dc_bandwidth_in_kbps_from_timing( + const struct dc_crtc_timing *timing) +{ + uint32_t bits_per_channel = 0; + uint32_t kbps; + + if (timing->flags.DSC) + return dc_dsc_stream_bandwidth_in_kbps(timing, + timing->dsc_cfg.bits_per_pixel, + timing->dsc_cfg.num_slices_h, + timing->dsc_cfg.is_dp); + + switch (timing->display_color_depth) { + case COLOR_DEPTH_666: + bits_per_channel = 6; + break; + case COLOR_DEPTH_888: + bits_per_channel = 8; + break; + case COLOR_DEPTH_101010: + bits_per_channel = 10; + break; + case COLOR_DEPTH_121212: + bits_per_channel = 12; + break; + case COLOR_DEPTH_141414: + bits_per_channel = 14; + break; + case COLOR_DEPTH_161616: + bits_per_channel = 16; + break; + default: + ASSERT(bits_per_channel != 0); + bits_per_channel = 8; + break; + } + + kbps = timing->pix_clk_100hz / 10; + kbps *= bits_per_channel; + + if (timing->flags.Y_ONLY != 1) { + /*Only YOnly make reduce bandwidth by 1/3 compares to RGB*/ + kbps *= 3; + if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR420) + kbps /= 2; + else if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR422) + kbps = kbps * 2 / 3; + } + + return kbps; +} + + /* Forward Declerations */ static bool decide_dsc_bandwidth_range( const uint32_t min_bpp_x16, @@ -79,8 +132,7 @@ static bool setup_dsc_config( const struct dsc_enc_caps *dsc_enc_caps, int target_bandwidth_kbps, const struct dc_crtc_timing *timing, - int min_slice_height_override, - int max_dsc_target_bpp_limit_override_x16, + const struct dc_dsc_config_options *options, struct dc_dsc_config *dsc_cfg); static bool dsc_buff_block_size_from_dpcd(int dpcd_buff_block_size, int *buff_block_size) @@ -352,6 +404,11 @@ bool dc_dsc_compute_bandwidth_range( struct dsc_enc_caps dsc_enc_caps; struct dsc_enc_caps dsc_common_caps; struct dc_dsc_config config; + struct dc_dsc_config_options options = {0}; + + options.dsc_min_slice_height_override = dsc_min_slice_height_override; + options.max_target_bpp_limit_override_x16 = max_bpp_x16; + options.slice_height_granularity = 1; get_dsc_enc_caps(dsc, &dsc_enc_caps, timing->pix_clk_100hz); @@ -360,7 +417,7 @@ 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_x16, &config); + &options, &config); if (is_dsc_possible) is_dsc_possible = decide_dsc_bandwidth_range(min_bpp_x16, max_bpp_x16, @@ -740,8 +797,7 @@ static bool setup_dsc_config( const struct dsc_enc_caps *dsc_enc_caps, int target_bandwidth_kbps, const struct dc_crtc_timing *timing, - int min_slice_height_override, - int max_dsc_target_bpp_limit_override_x16, + const struct dc_dsc_config_options *options, struct dc_dsc_config *dsc_cfg) { struct dsc_enc_caps dsc_common_caps; @@ -760,7 +816,7 @@ 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_x16, &policy); + dc_dsc_get_policy_for_timing(timing, options->max_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; @@ -909,12 +965,13 @@ static bool setup_dsc_config( // Slice height (i.e. number of slices per column): start with policy and pick the first one that height is divisible by. // For 4:2:0 make sure the slice height is divisible by 2 as well. - if (min_slice_height_override == 0) + if (options->dsc_min_slice_height_override == 0) slice_height = min(policy.min_slice_height, pic_height); else - slice_height = min(min_slice_height_override, pic_height); + slice_height = min((int)(options->dsc_min_slice_height_override), pic_height); while (slice_height < pic_height && (pic_height % slice_height != 0 || + slice_height % options->slice_height_granularity != 0 || (timing->pixel_encoding == PIXEL_ENCODING_YCBCR420 && slice_height % 2 != 0))) slice_height++; @@ -958,8 +1015,7 @@ done: 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, + const struct dc_dsc_config_options *options, uint32_t target_bandwidth_kbps, const struct dc_crtc_timing *timing, struct dc_dsc_config *dsc_cfg) @@ -971,8 +1027,7 @@ bool dc_dsc_compute_config( is_dsc_possible = setup_dsc_config(dsc_sink_caps, &dsc_enc_caps, target_bandwidth_kbps, - timing, dsc_min_slice_height_override, - max_target_bpp_limit_override * 16, dsc_cfg); + timing, options, dsc_cfg); return is_dsc_possible; } @@ -1104,3 +1159,10 @@ void dc_dsc_policy_set_disable_dsc_stream_overhead(bool disable) { dsc_policy_disable_dsc_stream_overhead = disable; } + +void dc_dsc_get_default_config_option(const struct dc *dc, struct dc_dsc_config_options *options) +{ + options->dsc_min_slice_height_override = dc->debug.dsc_min_slice_height_override; + options->max_target_bpp_limit_override_x16 = 0; + options->slice_height_granularity = 1; +} |