28 #include "dsc.h"
35 /* default DSC policy target bitrate limit is 16bpp */
38 /* default DSC policy enables DSC only when needed */
63 	if (!timing->flags.DSC) {  in apply_128b_132b_stream_overhead()
94 	if (timing->flags.DSC)  in dc_bandwidth_in_kbps_from_timing()
166 		const struct display_stream_compressor *dsc,
202 			dm_error("%s: DPCD DSC buffer size not recognized.\n", __func__);  in dsc_buff_block_size_from_dpcd()
218 		dm_error("%s: DPCD DSC buffer depth not recognized.\n", __func__);  in dsc_line_buff_depth_from_dpcd()
278 			dm_error("%s: DPCD DSC throughput mode not recognized.\n", __func__);  in dsc_throughput_from_dpcd()
309 		dm_error("%s: DPCD DSC bits-per-pixel increment not recognized.\n", __func__);  in dsc_bpp_increment_div_from_dpcd()
405 …if (dpcd_dsc_branch_decoder_caps == NULL) { // branch decoder DPCD DSC data can be null for non br…  in dc_dsc_parse_dsc_dpcd()
443 /* If DSC is possbile, get DSC bandwidth range based on [min_bpp, max_bpp] target bitrate range and
445  * If DSC is not possible, leave '*range' untouched.
448 		const struct display_stream_compressor *dsc,  in dc_dsc_compute_bandwidth_range()  argument
467 	get_dsc_enc_caps(dsc, &dsc_enc_caps, timing->pix_clk_100hz);  in dc_dsc_compute_bandwidth_range()
484 		const struct display_stream_compressor *dsc,  in get_dsc_enc_caps()  argument
488 	// This is a static HW query, so we can use any DSC  in get_dsc_enc_caps()
491 	if (dsc) {  in get_dsc_enc_caps()
492 		if (!dsc->ctx->dc->debug.disable_dsc)  in get_dsc_enc_caps()
493 			dsc->funcs->dsc_get_enc_caps(dsc_enc_caps, pixel_clock_100Hz);  in get_dsc_enc_caps()
494 		if (dsc->ctx->dc->debug.native422_support)  in get_dsc_enc_caps()
570 …// TODO DSC: Remove this workaround for N422 and 420 once it's fixed, or move it to get_dsc_encode…  in intersect_dsc_caps()
608 /* Decide DSC bandwidth range based on signal, timing, specs specific and input min and max
611  * and native timing bandwidth requirement when DSC is not used.
626 	/* apply signal, timing, specs and explicitly specified DSC range requirements */  in decide_dsc_bandwidth_range()
651 		/* max dsc target bpp */  in decide_dsc_bandwidth_range()
655 		/* min dsc target bpp */  in decide_dsc_bandwidth_range()
663 /* Decides if DSC should be used and calculates target bpp if it should, applying DSC policy.
667  *     - 'false' if target bpp cannot be decided (e.g. cannot fit even with min DSC bpp),
687 				/* enable max bpp even dsc is not needed */  in decide_dsc_target_bpp_x16()
839 /* Attempts to set DSC configuration for the stream, applying DSC policy.
844  * dsc_sink_caps       - DSC sink decoder capabilities (from DPCD)
846  * dsc_enc_caps        - DSC encoder capabilities
854  * dsc_cfg             - DSC configuration to use if it was possible to come up with
856  *                       The target bitrate after DSC can be calculated by multiplying
896 	// Intersect decoder with encoder DSC caps and validate DSC settings  in setup_dsc_config()
903 	// Validate available DSC settings against the mode timing  in setup_dsc_config()
993 		min_slices_h = 0; // DSC TODO: Maybe try increasing the number of slices first?  in setup_dsc_config()
1022 	// When we force ODM, num dsc h slices must be divisible by num odm h slices  in setup_dsc_config()
1096 	// Final decission: can we do DSC or not?  in setup_dsc_config()
1098 		// Fill out the rest of DSC settings  in setup_dsc_config()
1113 		const struct display_stream_compressor *dsc,  in dc_dsc_compute_config()  argument
1124 	get_dsc_enc_caps(dsc, &dsc_enc_caps, timing->pix_clk_100hz);  in dc_dsc_compute_config()
1184 	/* DSC Policy: Use minimum number of slices that fits the pixel clock */  in dc_dsc_get_policy_for_timing()
1187 	/* DSC Policy: Use max available slices  in dc_dsc_get_policy_for_timing()
1192 	/* DSC Policy: Use slice height recommended  in dc_dsc_get_policy_for_timing()
1193 	 * by VESA DSC Spreadsheet user guide  in dc_dsc_get_policy_for_timing()
1197 	/* DSC Policy: follow DP specs with an internal upper limit to 16 bpp  in dc_dsc_get_policy_for_timing()
1240 	/* enable DSC when not needed, default false */  in dc_dsc_get_policy_for_timing()