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      1 /*	$NetBSD: dsc.h,v 1.2 2021/12/18 23:45:05 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2017 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: AMD
     25  *
     26  */
     27 #ifndef __DAL_DSC_H__
     28 #define __DAL_DSC_H__
     29 
     30 #include "dc_dsc.h"
     31 #include "dc_hw_types.h"
     32 #include "dc_types.h"
     33 /* do not include any other headers
     34  * or else it might break Edid Utility functionality.
     35  */
     36 
     37 
     38 /* Input parameters for configuring DSC from the outside of DSC */
     39 struct dsc_config {
     40 	uint32_t pic_width;
     41 	uint32_t pic_height;
     42 	enum dc_pixel_encoding pixel_encoding;
     43 	enum dc_color_depth color_depth;  /* Bits per component */
     44 	struct dc_dsc_config dc_dsc_cfg;
     45 };
     46 
     47 
     48 /* Output parameters for configuring DSC-related part of OPTC */
     49 struct dsc_optc_config {
     50 	uint32_t slice_width; /* Slice width in pixels */
     51 	uint32_t bytes_per_pixel; /* Bytes per pixel in u3.28 format */
     52 	bool is_pixel_format_444; /* 'true' if pixel format is 'RGB 444' or 'Simple YCbCr 4:2:2' (4:2:2 upsampled to 4:4:4)' */
     53 };
     54 
     55 
     56 struct dcn_dsc_state {
     57 	uint32_t dsc_clock_en;
     58 	uint32_t dsc_slice_width;
     59 	uint32_t dsc_bytes_per_pixel;
     60 };
     61 
     62 
     63 /* DSC encoder capabilities
     64  * They differ from the DPCD DSC caps because they are based on AMD DSC encoder caps.
     65  */
     66 union dsc_enc_slice_caps {
     67 	struct {
     68 		uint8_t NUM_SLICES_1 : 1;
     69 		uint8_t NUM_SLICES_2 : 1;
     70 		uint8_t NUM_SLICES_3 : 1; /* This one is not per DSC spec, but our encoder supports it */
     71 		uint8_t NUM_SLICES_4 : 1;
     72 		uint8_t NUM_SLICES_8 : 1;
     73 	} bits;
     74 	uint8_t raw;
     75 };
     76 
     77 struct dsc_enc_caps {
     78 	uint8_t dsc_version;
     79 	union dsc_enc_slice_caps slice_caps;
     80 	int32_t lb_bit_depth;
     81 	bool is_block_pred_supported;
     82 	union dsc_color_formats color_formats;
     83 	union dsc_color_depth color_depth;
     84 	int32_t max_total_throughput_mps; /* Maximum total throughput with all the slices combined */
     85 	int32_t max_slice_width;
     86 	uint32_t bpp_increment_div; /* bpp increment divisor, e.g. if 16, it's 1/16th of a bit */
     87 };
     88 
     89 struct dsc_funcs {
     90 	void (*dsc_get_enc_caps)(struct dsc_enc_caps *dsc_enc_caps, int pixel_clock_100Hz);
     91 	void (*dsc_read_state)(struct display_stream_compressor *dsc, struct dcn_dsc_state *s);
     92 	bool (*dsc_validate_stream)(struct display_stream_compressor *dsc, const struct dsc_config *dsc_cfg);
     93 	void (*dsc_set_config)(struct display_stream_compressor *dsc, const struct dsc_config *dsc_cfg,
     94 			struct dsc_optc_config *dsc_optc_cfg);
     95 	bool (*dsc_get_packed_pps)(struct display_stream_compressor *dsc, const struct dsc_config *dsc_cfg,
     96 			uint8_t *dsc_packed_pps);
     97 	void (*dsc_enable)(struct display_stream_compressor *dsc, int opp_pipe);
     98 	void (*dsc_disable)(struct display_stream_compressor *dsc);
     99 };
    100 
    101 #endif
    102