xref: /linux/drivers/gpu/drm/amd/display/dc/dml2/dml2_utils.h (revision 460e462d22542adfafd8a5bc979437df73f1cbf3)
1 /* SPDX-License-Identifier: MIT */
2 /*
3  * Copyright 2023 Advanced Micro Devices, Inc.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a
6  * copy of this software and associated documentation files (the "Software"),
7  * to deal in the Software without restriction, including without limitation
8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9  * and/or sell copies of the Software, and to permit persons to whom the
10  * Software is furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be included in
13  * all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21  * OTHER DEALINGS IN THE SOFTWARE.
22  *
23  */
24 
25 #ifndef _DML2_UTILS_H_
26 #define _DML2_UTILS_H_
27 
28 #include "os_types.h"
29 #include "dml2_dc_types.h"
30 
31 struct dc;
32 struct dml_timing_cfg_st;
33 struct dml2_dcn_clocks;
34 struct dc_state;
35 
36 void dml2_util_copy_dml_timing(struct dml_timing_cfg_st *dml_timing_array, unsigned int dst_index, unsigned int src_index);
37 void dml2_util_copy_dml_plane(struct dml_plane_cfg_st *dml_plane_array, unsigned int dst_index, unsigned int src_index);
38 void dml2_util_copy_dml_surface(struct dml_surface_cfg_st *dml_surface_array, unsigned int dst_index, unsigned int src_index);
39 void dml2_util_copy_dml_output(struct dml_output_cfg_st *dml_output_array, unsigned int dst_index, unsigned int src_index);
40 unsigned int dml2_util_get_maximum_odm_combine_for_output(bool force_odm_4to1, enum dml_output_encoder_class encoder, bool dsc_enabled);
41 void dml2_copy_clocks_to_dc_state(struct dml2_dcn_clocks *out_clks, struct dc_state *context);
42 void dml2_extract_watermark_set(struct dcn_watermarks *watermark, struct display_mode_lib_st *dml_core_ctx);
43 int dml2_helper_find_dml_pipe_idx_by_stream_id(struct dml2_context *ctx, unsigned int stream_id);
44 bool is_dtbclk_required(const struct dc *dc, struct dc_state *context);
45 bool dml2_is_stereo_timing(struct dc_stream_state *stream);
46 
47 /*
48  * dml2_dc_construct_pipes - This function will determine if we need additional pipes based
49  * on the DML calculated outputs for MPC, ODM and allocate them as necessary. This function
50  * could be called after in dml_validate_build_resource after dml_mode_pragramming like :
51  * {
52  *   ...
53  * map_hw_resources(&s->cur_display_config, &s->mode_support_info);
54  * result = dml_mode_programming(&in_ctx->dml_core_ctx, s->mode_support_params.out_lowest_state_idx, &s->cur_display_config, true);
55  * dml2_dc_construct_pipes(in_display_state, s->mode_support_info, out_hw_context);
56  * ...
57  * }
58  *
59  * @context: To obtain res_ctx and read other information like stream ID etc.
60  * @dml_mode_support_st : To get the ODM, MPC outputs as determined by the DML.
61  * @out_hw_context : Handle to the new hardware context.
62  *
63  *
64  * Return: None.
65  */
66 void dml2_dc_construct_pipes(struct dc_state *context, struct dml_mode_support_info_st *dml_mode_support_st,
67 		struct resource_context *out_hw_context);
68 
69 /*
70  * dml2_predict_pipe_split - This function is the dml2 version of predict split pipe. It predicts a
71  * if pipe split is required or not and returns the output as a bool.
72  * @context : dc_state.
73  * @pipe : old_index is the index of the pipe as derived from pipe_idx.
74  * @index : index of the pipe
75  *
76  *
77  * Return: Returns the result in boolean.
78  */
79 bool dml2_predict_pipe_split(struct dc_state *context, display_pipe_params_st pipe, int index);
80 
81 /*
82  * dml2_build_mapped_resource - This function is the dml2 version of build_mapped_resource.
83  * In case of ODM, we need to build pipe hardware params again as done in dcn20_build_mapped_resource.
84  * @dc : struct dc
85  * @context : struct dc_state.
86  * @stream : stream whoose corresponding pipe params need to be modified.
87  *
88  *
89  * Return: Returns DC_OK if successful.
90  */
91 enum dc_status dml2_build_mapped_resource(const struct dc *dc, struct dc_state *context, struct dc_stream_state *stream);
92 
93 /*
94  * dml2_extract_rq_regs - This function will extract information needed for struct _vcs_dpi_display_rq_regs_st
95  * and populate it.
96  * @context: To obtain and populate the res_ctx->pipe_ctx->rq_regs with DML outputs.
97  * @support : This structure has the DML intermediate outputs required to populate rq_regs.
98  *
99  *
100  * Return: None.
101  */
102 
103  /*
104   * dml2_calculate_rq_and_dlg_params - This function will call into DML2 functions needed
105   * for populating rq, ttu and dlg param structures and populate it.
106   * @dc : struct dc
107   * @context : dc_state provides a handle to selectively populate pipe_ctx
108   * @out_new_hw_state: To obtain and populate the rq, dlg and ttu regs in
109   *                    out_new_hw_state->pipe_ctx with DML outputs.
110   * @in_ctx : This structure has the pointer to display_mode_lib_st.
111   * @pipe_cnt : DML functions to obtain RQ, TTu and DLG params need a pipe_index.
112   *				This helps provide pipe_index in the pipe_cnt loop.
113   *
114   *
115   * Return: None.
116   */
117 void dml2_calculate_rq_and_dlg_params(const struct dc *dc, struct dc_state *context, struct resource_context *out_new_hw_state, struct dml2_context *in_ctx, unsigned int pipe_cnt);
118 
119 /*
120  * dml2_apply_det_buffer_allocation_policy - This function will determine the DET Buffer size
121  * and return the number of streams.
122  * @dml2 : Handle for dml2 context
123  * @dml_dispcfg : dml_dispcfg is the DML2 struct representing the current display config
124  * Return : None.
125  */
126 void dml2_apply_det_buffer_allocation_policy(struct dml2_context *in_ctx, struct dml_display_cfg_st *dml_dispcfg);
127 
128 /*
129  * dml2_verify_det_buffer_configuration - This function will verify if the allocated DET buffer exceeds
130  * the total available DET size available and outputs a boolean to indicate if recalulation is needed.
131  * @dml2 : Handle for dml2 context
132  * @dml_dispcfg : dml_dispcfg is the DML2 struct representing the current display config
133  * @struct dml2_helper_det_policy_scratch : Pointer to DET helper scratch
134  * Return : returns true if recalculation is required, false otherwise.
135  */
136 bool dml2_verify_det_buffer_configuration(struct dml2_context *in_ctx, struct dc_state *display_state, struct dml2_helper_det_policy_scratch *det_scratch);
137 
138 /*
139  * dml2_initialize_det_scratch - This function will initialize the DET scratch space as per requirements.
140  * @dml2 : Handle for dml2 context
141  * Return : None
142  */
143 void dml2_initialize_det_scratch(struct dml2_context *in_ctx);
144 #endif
145