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 | 85 |
1 files changed, 70 insertions, 15 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 5995bcdfed54..e60f760585e4 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c +++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c @@ -23,8 +23,7 @@ */ #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT -#include "dc.h" -#include "core_types.h" +#include "dc_hw_types.h" #include "dsc.h" #include <drm/drm_dp_helper.h> @@ -47,6 +46,59 @@ const struct dc_dsc_policy dsc_policy = { /* This module's internal functions */ +static uint32_t dc_dsc_bandwidth_in_kbps_from_timing( + const struct dc_crtc_timing *timing) +{ + uint32_t bits_per_channel = 0; + uint32_t kbps; + + if (timing->flags.DSC) { + kbps = (timing->pix_clk_100hz * timing->dsc_cfg.bits_per_pixel); + kbps = kbps / 160 + ((kbps % 160) ? 1 : 0); + return kbps; + } + + 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: + break; + } + + ASSERT(bits_per_channel != 0); + + 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; + +} + static bool dsc_buff_block_size_from_dpcd(int dpcd_buff_block_size, int *buff_block_size) { @@ -178,12 +230,11 @@ static bool dsc_bpp_increment_div_from_dpcd(int bpp_increment_dpcd, uint32_t *bp } static void get_dsc_enc_caps( - const struct dc *dc, + const struct display_stream_compressor *dsc, struct dsc_enc_caps *dsc_enc_caps, int pixel_clock_100Hz) { // This is a static HW query, so we can use any DSC - struct display_stream_compressor *dsc = dc->res_pool->dscs[0]; memset(dsc_enc_caps, 0, sizeof(struct dsc_enc_caps)); if (dsc) @@ -290,7 +341,7 @@ static void get_dsc_bandwidth_range( struct dc_dsc_bw_range *range) { /* native stream bandwidth */ - range->stream_kbps = dc_bandwidth_in_kbps_from_timing(timing); + range->stream_kbps = dc_dsc_bandwidth_in_kbps_from_timing(timing); /* max dsc target bpp */ range->max_kbps = dsc_div_by_10_round_up(max_bpp * timing->pix_clk_100hz); @@ -512,6 +563,7 @@ 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, struct dc_dsc_config *dsc_cfg) { struct dsc_enc_caps dsc_common_caps; @@ -680,7 +732,10 @@ 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. - slice_height = min(dsc_policy.min_sice_height, pic_height); + if (min_slice_height_override == 0) + slice_height = min(dsc_policy.min_sice_height, pic_height); + else + slice_height = min(min_slice_height_override, pic_height); while (slice_height < pic_height && (pic_height % slice_height != 0 || (timing->pixel_encoding == PIXEL_ENCODING_YCBCR420 && slice_height % 2 != 0))) @@ -802,7 +857,8 @@ bool dc_dsc_parse_dsc_dpcd(const uint8_t *dpcd_dsc_basic_data, const uint8_t *dp * If DSC is not possible, leave '*range' untouched. */ bool dc_dsc_compute_bandwidth_range( - const struct dc *dc, + const struct display_stream_compressor *dsc, + const uint32_t dsc_min_slice_height_override, const uint32_t min_bpp, const uint32_t max_bpp, const struct dsc_dec_dpcd_caps *dsc_sink_caps, @@ -814,16 +870,14 @@ bool dc_dsc_compute_bandwidth_range( struct dsc_enc_caps dsc_common_caps; struct dc_dsc_config config; - get_dsc_enc_caps(dc, &dsc_enc_caps, timing->pix_clk_100hz); + get_dsc_enc_caps(dsc, &dsc_enc_caps, timing->pix_clk_100hz); is_dsc_possible = intersect_dsc_caps(dsc_sink_caps, &dsc_enc_caps, timing->pixel_encoding, &dsc_common_caps); if (is_dsc_possible) - is_dsc_possible = setup_dsc_config(dsc_sink_caps, - &dsc_enc_caps, - 0, - timing, &config); + is_dsc_possible = setup_dsc_config(dsc_sink_caps, &dsc_enc_caps, 0, timing, + dsc_min_slice_height_override, &config); if (is_dsc_possible) get_dsc_bandwidth_range(min_bpp, max_bpp, &dsc_common_caps, timing, range); @@ -832,8 +886,9 @@ bool dc_dsc_compute_bandwidth_range( } bool dc_dsc_compute_config( - const struct dc *dc, + const struct display_stream_compressor *dsc, const struct dsc_dec_dpcd_caps *dsc_sink_caps, + const uint32_t dsc_min_slice_height_override, uint32_t target_bandwidth_kbps, const struct dc_crtc_timing *timing, struct dc_dsc_config *dsc_cfg) @@ -841,11 +896,11 @@ bool dc_dsc_compute_config( bool is_dsc_possible = false; struct dsc_enc_caps dsc_enc_caps; - get_dsc_enc_caps(dc, &dsc_enc_caps, timing->pix_clk_100hz); + get_dsc_enc_caps(dsc, &dsc_enc_caps, timing->pix_clk_100hz); is_dsc_possible = setup_dsc_config(dsc_sink_caps, &dsc_enc_caps, target_bandwidth_kbps, - timing, dsc_cfg); + timing, dsc_min_slice_height_override, dsc_cfg); return is_dsc_possible; } #endif /* CONFIG_DRM_AMD_DC_DSC_SUPPORT */ |