1 /*
2  * Copyright 2016 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 
27 
28 
29 /*
30  * Copyright 2016 Advanced Micro Devices, Inc.
31  *
32  * Permission is hereby granted, free of charge, to any person obtaining a
33  * copy of this software and associated documentation files (the "Software"),
34  * to deal in the Software without restriction, including without limitation
35  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
36  * and/or sell copies of the Software, and to permit persons to whom the
37  * Software is furnished to do so, subject to the following conditions:
38  *
39  * The above copyright notice and this permission notice shall be included in
40  * all copies or substantial portions of the Software.
41  *
42  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
43  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
44  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
45  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
46  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
47  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
48  * OTHER DEALINGS IN THE SOFTWARE.
49  *
50  * Authors: AMD
51  *
52  */
53 
54 #ifndef MOD_FREESYNC_H_
55 #define MOD_FREESYNC_H_
56 
57 #include "mod_shared.h"
58 
59 // Access structures
60 struct mod_freesync {
61 	int dummy;
62 };
63 
64 // TODO: References to this should be removed
65 struct mod_freesync_caps {
66 	bool supported;
67 	unsigned int min_refresh_in_micro_hz;
68 	unsigned int max_refresh_in_micro_hz;
69 };
70 
71 enum mod_vrr_state {
72 	VRR_STATE_UNSUPPORTED = 0,
73 	VRR_STATE_DISABLED,
74 	VRR_STATE_INACTIVE,
75 	VRR_STATE_ACTIVE_VARIABLE,
76 	VRR_STATE_ACTIVE_FIXED
77 };
78 
79 struct mod_freesync_config {
80 	enum mod_vrr_state state;
81 	bool vsif_supported;
82 	bool ramping;
83 	bool btr;
84 	unsigned int min_refresh_in_uhz;
85 	unsigned int max_refresh_in_uhz;
86 };
87 
88 struct mod_vrr_params_btr {
89 	bool btr_enabled;
90 	bool btr_active;
91 	uint32_t mid_point_in_us;
92 	uint32_t inserted_duration_in_us;
93 	uint32_t frames_to_insert;
94 	uint32_t frame_counter;
95 };
96 
97 struct mod_vrr_params_fixed_refresh {
98 	bool fixed_active;
99 	bool ramping_active;
100 	bool ramping_done;
101 	uint32_t target_refresh_in_uhz;
102 	uint32_t frame_counter;
103 };
104 
105 struct mod_vrr_params {
106 	bool supported;
107 	bool send_info_frame;
108 	enum mod_vrr_state state;
109 
110 	uint32_t min_refresh_in_uhz;
111 	uint32_t max_duration_in_us;
112 	uint32_t max_refresh_in_uhz;
113 	uint32_t min_duration_in_us;
114 
115 	struct dc_crtc_timing_adjust adjust;
116 
117 	struct mod_vrr_params_fixed_refresh fixed;
118 
119 	struct mod_vrr_params_btr btr;
120 };
121 
122 struct mod_freesync *mod_freesync_create(struct dc *dc);
123 void mod_freesync_destroy(struct mod_freesync *mod_freesync);
124 
125 bool mod_freesync_get_vmin_vmax(struct mod_freesync *mod_freesync,
126 		const struct dc_stream_state *stream,
127 		unsigned int *vmin,
128 		unsigned int *vmax);
129 
130 bool mod_freesync_get_v_position(struct mod_freesync *mod_freesync,
131 		struct dc_stream_state *stream,
132 		unsigned int *nom_v_pos,
133 		unsigned int *v_pos);
134 
135 void mod_freesync_get_settings(struct mod_freesync *mod_freesync,
136 		const struct mod_vrr_params *vrr,
137 		unsigned int *v_total_min, unsigned int *v_total_max,
138 		unsigned int *event_triggers,
139 		unsigned int *window_min, unsigned int *window_max,
140 		unsigned int *lfc_mid_point_in_us,
141 		unsigned int *inserted_frames,
142 		unsigned int *inserted_duration_in_us);
143 
144 void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync,
145 		const struct dc_stream_state *stream,
146 		const struct mod_vrr_params *vrr,
147 		enum vrr_packet_type packet_type,
148 		enum color_transfer_func app_tf,
149 		struct dc_info_packet *infopacket);
150 
151 void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync,
152 		const struct dc_stream_state *stream,
153 		struct mod_freesync_config *in_config,
154 		struct mod_vrr_params *in_out_vrr);
155 
156 void mod_freesync_handle_preflip(struct mod_freesync *mod_freesync,
157 		const struct dc_plane_state *plane,
158 		const struct dc_stream_state *stream,
159 		unsigned int curr_time_stamp_in_us,
160 		struct mod_vrr_params *in_out_vrr);
161 
162 void mod_freesync_handle_v_update(struct mod_freesync *mod_freesync,
163 		const struct dc_stream_state *stream,
164 		struct mod_vrr_params *in_out_vrr);
165 
166 unsigned long long mod_freesync_calc_nominal_field_rate(
167 			const struct dc_stream_state *stream);
168 
169 bool mod_freesync_is_valid_range(struct mod_freesync *mod_freesync,
170 		const struct dc_stream_state *stream,
171 		uint32_t min_refresh_cap_in_uhz,
172 		uint32_t max_refresh_cap_in_uhz,
173 		uint32_t min_refresh_request_in_uhz,
174 		uint32_t max_refresh_request_in_uhz);
175 
176 
177 
178 #endif
179