LXR linux/drivers/gpu/drm/amd/display/modules/inc/mod

   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
  60struct mod_freesync {
  61        int dummy;
  62};
  63
  64// TODO: References to this should be removed
  65struct mod_freesync_caps {
  66        bool supported;
  67        unsigned int min_refresh_in_micro_hz;
  68        unsigned int max_refresh_in_micro_hz;
  69};
  70
  71enum 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
  79struct 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
  88struct 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
  97struct 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
 105struct 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
 122struct mod_freesync *mod_freesync_create(struct dc *dc);
 123void mod_freesync_destroy(struct mod_freesync *mod_freesync);
 124
 125bool 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
 130bool 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
 135void 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
 144void 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
 151void 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
 156void 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
 162void 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
 166unsigned long long mod_freesync_calc_nominal_field_rate(
 167                        const struct dc_stream_state *stream);
 168
 169bool 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#endif
 177