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