1 #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
2 #ifndef DC_DSC_H_
3 #define DC_DSC_H_
4 /*
5 * Copyright 2019 Advanced Micro Devices, Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 *
25 * Author: AMD
26 */
27
28 /* put it here temporarily until linux has the new addresses official defined */
29 /* DP Extended DSC Capabilities */
30 #define DP_DSC_BRANCH_OVERALL_THROUGHPUT_0 0x0a0 /* DP 1.4a SCR */
31 #define DP_DSC_BRANCH_OVERALL_THROUGHPUT_1 0x0a1
32 #define DP_DSC_BRANCH_MAX_LINE_WIDTH 0x0a2
33
34 struct dc_dsc_bw_range {
35 uint32_t min_kbps; /* Bandwidth if min_target_bpp_x16 is used */
36 uint32_t min_target_bpp_x16;
37 uint32_t max_kbps; /* Bandwidth if max_target_bpp_x16 is used */
38 uint32_t max_target_bpp_x16;
39 uint32_t stream_kbps; /* Uncompressed stream bandwidth */
40 };
41
42
43 bool dc_dsc_parse_dsc_dpcd(const uint8_t *dpcd_dsc_basic_data,
44 const uint8_t *dpcd_dsc_ext_data,
45 struct dsc_dec_dpcd_caps *dsc_sink_caps);
46
47 bool dc_dsc_compute_bandwidth_range(
48 const struct dc *dc,
49 const uint32_t min_kbps,
50 const uint32_t max_kbps,
51 const struct dsc_dec_dpcd_caps *dsc_sink_caps,
52 const struct dc_crtc_timing *timing,
53 struct dc_dsc_bw_range *range);
54
55 bool dc_dsc_compute_config(
56 const struct dc *dc,
57 const struct dsc_dec_dpcd_caps *dsc_sink_caps,
58 uint32_t target_bandwidth_kbps,
59 const struct dc_crtc_timing *timing,
60 struct dc_dsc_config *dsc_cfg);
61 #endif
62 #endif