104 lines
3.7 KiB
C
104 lines
3.7 KiB
C
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#ifndef DC_DSC_H_
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#define DC_DSC_H_
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/*
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* Copyright 2019 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Author: AMD
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*/
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/* put it here temporarily until linux has the new addresses official defined */
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/* DP Extended DSC Capabilities */
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#define DP_DSC_BRANCH_OVERALL_THROUGHPUT_0 0x0a0 /* DP 1.4a SCR */
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#define DP_DSC_BRANCH_OVERALL_THROUGHPUT_1 0x0a1
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#define DP_DSC_BRANCH_MAX_LINE_WIDTH 0x0a2
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#include "dc_types.h"
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struct dc_dsc_bw_range {
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uint32_t min_kbps; /* Bandwidth if min_target_bpp_x16 is used */
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uint32_t min_target_bpp_x16;
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uint32_t max_kbps; /* Bandwidth if max_target_bpp_x16 is used */
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uint32_t max_target_bpp_x16;
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uint32_t stream_kbps; /* Uncompressed stream bandwidth */
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};
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struct display_stream_compressor {
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const struct dsc_funcs *funcs;
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struct dc_context *ctx;
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int inst;
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};
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struct dc_dsc_policy {
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bool use_min_slices_h;
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int max_slices_h; // Maximum available if 0
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int min_slice_height; // Must not be less than 8
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uint32_t max_target_bpp;
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uint32_t min_target_bpp;
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bool enable_dsc_when_not_needed;
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};
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bool dc_dsc_parse_dsc_dpcd(const struct dc *dc,
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const uint8_t *dpcd_dsc_basic_data,
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const uint8_t *dpcd_dsc_ext_data,
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struct dsc_dec_dpcd_caps *dsc_sink_caps);
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bool dc_dsc_compute_bandwidth_range(
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const struct display_stream_compressor *dsc,
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uint32_t dsc_min_slice_height_override,
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uint32_t min_bpp_x16,
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uint32_t max_bpp_x16,
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const struct dsc_dec_dpcd_caps *dsc_sink_caps,
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const struct dc_crtc_timing *timing,
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struct dc_dsc_bw_range *range);
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bool dc_dsc_compute_config(
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const struct display_stream_compressor *dsc,
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const struct dsc_dec_dpcd_caps *dsc_sink_caps,
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uint32_t dsc_min_slice_height_override,
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uint32_t max_target_bpp_limit_override,
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uint32_t target_bandwidth_kbps,
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const struct dc_crtc_timing *timing,
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struct dc_dsc_config *dsc_cfg);
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uint32_t dc_dsc_stream_bandwidth_in_kbps(const struct dc_crtc_timing *timing,
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uint32_t bpp_x16, uint32_t num_slices_h, bool is_dp);
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uint32_t dc_dsc_stream_bandwidth_overhead_in_kbps(
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const struct dc_crtc_timing *timing,
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const int num_slices_h,
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const bool is_dp);
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/* TODO - Hardware/specs limitation should be owned by dc dsc and returned to DM,
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* and DM can choose to OVERRIDE the limitation on CASE BY CASE basis.
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* Hardware/specs limitation should not be writable by DM.
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* It should be decoupled from DM specific policy and named differently.
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*/
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void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing,
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uint32_t max_target_bpp_limit_override_x16,
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struct dc_dsc_policy *policy);
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void dc_dsc_policy_set_max_target_bpp_limit(uint32_t limit);
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void dc_dsc_policy_set_enable_dsc_when_not_needed(bool enable);
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void dc_dsc_policy_set_disable_dsc_stream_overhead(bool disable);
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#endif
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