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1 /*
2  * Copyright 2019 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: AMD
23  *
24  */
25
26 #ifndef AMD_DAL_DEV_AMDGPU_DM_AMDGPU_DM_CRC_H_
27 #define AMD_DAL_DEV_AMDGPU_DM_AMDGPU_DM_CRC_H_
28
29 struct drm_crtc;
30 struct dm_crtc_state;
31
32 enum amdgpu_dm_pipe_crc_source {
33         AMDGPU_DM_PIPE_CRC_SOURCE_NONE = 0,
34         AMDGPU_DM_PIPE_CRC_SOURCE_CRTC,
35         AMDGPU_DM_PIPE_CRC_SOURCE_CRTC_DITHER,
36         AMDGPU_DM_PIPE_CRC_SOURCE_DPRX,
37         AMDGPU_DM_PIPE_CRC_SOURCE_DPRX_DITHER,
38         AMDGPU_DM_PIPE_CRC_SOURCE_MAX,
39         AMDGPU_DM_PIPE_CRC_SOURCE_INVALID = -1,
40 };
41
42 #ifdef CONFIG_DRM_AMD_SECURE_DISPLAY
43 #define MAX_CRTC 6
44
45 enum secure_display_mode {
46         /* via dmub + psp */
47         LEGACY_MODE = 0,
48         /* driver directly */
49         DISPLAY_CRC_MODE,
50         SECURE_DISPLAY_MODE_MAX,
51 };
52
53 struct phy_id_mapping {
54         bool assigned;
55         bool is_mst;
56         uint8_t enc_hw_inst;
57         u8 lct;
58         u8 port_num;
59         u8 rad[8];
60 };
61
62 struct crc_data {
63         uint32_t crc_R;
64         uint32_t crc_G;
65         uint32_t crc_B;
66         uint32_t frame_count;
67         bool crc_ready;
68 };
69
70 struct crc_info {
71         struct crc_data crc[MAX_CRC_WINDOW_NUM];
72         struct completion completion;
73         spinlock_t lock;
74 };
75
76 struct crc_window_param {
77         uint16_t x_start;
78         uint16_t y_start;
79         uint16_t x_end;
80         uint16_t y_end;
81         /* CRC window is activated or not*/
82         bool enable;
83         /* Update crc window during vertical blank or not */
84         bool update_win;
85         /* skip reading/writing for few frames */
86         int skip_frame_cnt;
87 };
88
89 struct secure_display_crtc_context {
90         /* work to notify PSP TA*/
91         struct work_struct notify_ta_work;
92
93         /* work to forward ROI to dmcu/dmub */
94         struct work_struct forward_roi_work;
95
96         struct drm_crtc *crtc;
97
98         /* Region of Interest (ROI) */
99         struct crc_window roi[MAX_CRC_WINDOW_NUM];
100
101         struct crc_info crc_info;
102 };
103
104 struct secure_display_context {
105
106         struct secure_display_crtc_context *crtc_ctx;
107     /* Whether dmub support multiple ROI setting */
108         bool support_mul_roi;
109         enum secure_display_mode op_mode;
110         bool phy_mapping_updated;
111         int phy_id_mapping_cnt;
112         struct phy_id_mapping phy_id_mapping[MAX_CRTC];
113 };
114 #endif
115
116 static inline bool amdgpu_dm_is_valid_crc_source(enum amdgpu_dm_pipe_crc_source source)
117 {
118         return (source > AMDGPU_DM_PIPE_CRC_SOURCE_NONE) &&
119                (source < AMDGPU_DM_PIPE_CRC_SOURCE_MAX);
120 }
121
122 /* amdgpu_dm_crc.c */
123 #ifdef CONFIG_DEBUG_FS
124 int amdgpu_dm_crtc_configure_crc_source(struct drm_crtc *crtc,
125                                         struct dm_crtc_state *dm_crtc_state,
126                                         enum amdgpu_dm_pipe_crc_source source);
127 int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name);
128 int amdgpu_dm_crtc_verify_crc_source(struct drm_crtc *crtc,
129                                      const char *src_name,
130                                      size_t *values_cnt);
131 const char *const *amdgpu_dm_crtc_get_crc_sources(struct drm_crtc *crtc,
132                                                   size_t *count);
133 void amdgpu_dm_crtc_handle_crc_irq(struct drm_crtc *crtc);
134 #else
135 #define amdgpu_dm_crtc_set_crc_source NULL
136 #define amdgpu_dm_crtc_verify_crc_source NULL
137 #define amdgpu_dm_crtc_get_crc_sources NULL
138 #define amdgpu_dm_crtc_handle_crc_irq(x)
139 #endif
140
141 #ifdef CONFIG_DRM_AMD_SECURE_DISPLAY
142 bool amdgpu_dm_crc_window_is_activated(struct drm_crtc *crtc);
143 void amdgpu_dm_crtc_handle_crc_window_irq(struct drm_crtc *crtc);
144 void amdgpu_dm_crtc_secure_display_create_contexts(struct amdgpu_device *adev);
145 #else
146 #define amdgpu_dm_crc_window_is_activated(x)
147 #define amdgpu_dm_crtc_handle_crc_window_irq(x)
148 #define amdgpu_dm_crtc_secure_display_create_contexts(x)
149 #endif
150
151 #endif /* AMD_DAL_DEV_AMDGPU_DM_AMDGPU_DM_CRC_H_ */
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