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 #include "dmub_abm.h" 27 #include "dmub_abm_lcd.h" 28 #include "dc.h" 29 #include "core_types.h" 30 #include "dmub_cmd.h" 31 #include "dc_dmub_srv.h" 32 #include "dmub/dmub_srv.h" 33 34 #define TO_DMUB_ABM(abm)\ 35 container_of(abm, struct dce_abm, base) 36 37 #define ABM_FEATURE_NO_SUPPORT 0 38 #define ABM_LCD_SUPPORT 1 39 40 static unsigned int abm_feature_support(struct abm *abm, unsigned int panel_inst) 41 { 42 struct dc_context *dc = abm->ctx; 43 struct dc_link *edp_links[MAX_NUM_EDP]; 44 int i; 45 int edp_num; 46 unsigned int ret = ABM_FEATURE_NO_SUPPORT; 47 48 dc_get_edp_links(dc->dc, edp_links, &edp_num); 49 50 for (i = 0; i < edp_num; i++) { 51 if (panel_inst == i) 52 break; 53 } 54 55 if (i < edp_num) { 56 ret = ABM_LCD_SUPPORT; 57 } 58 59 return ret; 60 } 61 62 static void dmub_abm_init_ex(struct abm *abm, uint32_t backlight, uint32_t user_level) 63 { 64 dmub_abm_init(abm, backlight, user_level); 65 } 66 67 static unsigned int dmub_abm_get_current_backlight_ex(struct abm *abm) 68 { 69 dc_allow_idle_optimizations(abm->ctx->dc, false); 70 71 return dmub_abm_get_current_backlight(abm); 72 } 73 74 static unsigned int dmub_abm_get_target_backlight_ex(struct abm *abm) 75 { 76 dc_allow_idle_optimizations(abm->ctx->dc, false); 77 78 return dmub_abm_get_target_backlight(abm); 79 } 80 81 static bool dmub_abm_set_level_ex(struct abm *abm, uint32_t level) 82 { 83 bool ret = false; 84 unsigned int feature_support, i; 85 uint8_t panel_mask0 = 0; 86 87 for (i = 0; i < MAX_NUM_EDP; i++) { 88 feature_support = abm_feature_support(abm, i); 89 90 if (feature_support == ABM_LCD_SUPPORT) 91 panel_mask0 |= (0x01 << i); 92 } 93 94 if (panel_mask0) 95 ret = dmub_abm_set_level(abm, level, panel_mask0); 96 97 return ret; 98 } 99 100 static bool dmub_abm_init_config_ex(struct abm *abm, 101 const char *src, 102 unsigned int bytes, 103 unsigned int inst) 104 { 105 unsigned int feature_support; 106 107 feature_support = abm_feature_support(abm, inst); 108 109 if (feature_support == ABM_LCD_SUPPORT) 110 dmub_abm_init_config(abm, src, bytes, inst); 111 112 return true; 113 } 114 115 static bool dmub_abm_set_pause_ex(struct abm *abm, bool pause, unsigned int panel_inst, unsigned int stream_inst) 116 { 117 bool ret = false; 118 unsigned int feature_support; 119 120 feature_support = abm_feature_support(abm, panel_inst); 121 122 if (feature_support == ABM_LCD_SUPPORT) 123 ret = dmub_abm_set_pause(abm, pause, panel_inst, stream_inst); 124 125 return ret; 126 } 127 128 /***************************************************************************** 129 * dmub_abm_save_restore_ex() - calls dmub_abm_save_restore for preserving DMUB's 130 * Varibright states for LCD only. OLED is TBD 131 * @abm: used to check get dc context 132 * @panel_inst: panel instance index 133 * @pData: contains command to pause/un-pause abm and abm parameters 134 * 135 * 136 ***************************************************************************/ 137 static bool dmub_abm_save_restore_ex( 138 struct abm *abm, 139 unsigned int panel_inst, 140 struct abm_save_restore *pData) 141 { 142 bool ret = false; 143 unsigned int feature_support; 144 struct dc_context *dc = abm->ctx; 145 146 feature_support = abm_feature_support(abm, panel_inst); 147 148 if (feature_support == ABM_LCD_SUPPORT) 149 ret = dmub_abm_save_restore(dc, panel_inst, pData); 150 151 return ret; 152 } 153 154 static bool dmub_abm_set_pipe_ex(struct abm *abm, 155 uint32_t otg_inst, 156 uint32_t option, 157 uint32_t panel_inst, 158 uint32_t pwrseq_inst) 159 { 160 bool ret = false; 161 unsigned int feature_support; 162 163 feature_support = abm_feature_support(abm, panel_inst); 164 165 if (feature_support == ABM_LCD_SUPPORT) 166 ret = dmub_abm_set_pipe(abm, otg_inst, option, panel_inst, pwrseq_inst); 167 168 return ret; 169 } 170 171 static bool dmub_abm_set_backlight_level_pwm_ex(struct abm *abm, 172 unsigned int backlight_pwm_u16_16, 173 unsigned int frame_ramp, 174 unsigned int controller_id, 175 unsigned int panel_inst) 176 { 177 bool ret = false; 178 unsigned int feature_support; 179 180 feature_support = abm_feature_support(abm, panel_inst); 181 182 if (feature_support == ABM_LCD_SUPPORT) 183 ret = dmub_abm_set_backlight_level(abm, backlight_pwm_u16_16, frame_ramp, panel_inst); 184 185 return ret; 186 } 187 188 static const struct abm_funcs abm_funcs = { 189 .abm_init = dmub_abm_init_ex, 190 .set_abm_level = dmub_abm_set_level_ex, 191 .get_current_backlight = dmub_abm_get_current_backlight_ex, 192 .get_target_backlight = dmub_abm_get_target_backlight_ex, 193 .init_abm_config = dmub_abm_init_config_ex, 194 .set_abm_pause = dmub_abm_set_pause_ex, 195 .save_restore = dmub_abm_save_restore_ex, 196 .set_pipe_ex = dmub_abm_set_pipe_ex, 197 .set_backlight_level_pwm = dmub_abm_set_backlight_level_pwm_ex, 198 }; 199 200 static void dmub_abm_construct( 201 struct dce_abm *abm_dce, 202 struct dc_context *ctx, 203 const struct dce_abm_registers *regs, 204 const struct dce_abm_shift *abm_shift, 205 const struct dce_abm_mask *abm_mask) 206 { 207 struct abm *base = &abm_dce->base; 208 209 base->ctx = ctx; 210 base->funcs = &abm_funcs; 211 base->dmcu_is_running = false; 212 213 abm_dce->regs = regs; 214 abm_dce->abm_shift = abm_shift; 215 abm_dce->abm_mask = abm_mask; 216 } 217 218 struct abm *dmub_abm_create( 219 struct dc_context *ctx, 220 const struct dce_abm_registers *regs, 221 const struct dce_abm_shift *abm_shift, 222 const struct dce_abm_mask *abm_mask) 223 { 224 if (ctx->dc->caps.dmcub_support) { 225 struct dce_abm *abm_dce = kzalloc(sizeof(*abm_dce), GFP_KERNEL); 226 227 if (abm_dce == NULL) { 228 BREAK_TO_DEBUGGER(); 229 return NULL; 230 } 231 232 dmub_abm_construct(abm_dce, ctx, regs, abm_shift, abm_mask); 233 234 return &abm_dce->base; 235 } 236 return NULL; 237 } 238 239 void dmub_abm_destroy(struct abm **abm) 240 { 241 struct dce_abm *abm_dce = TO_DMUB_ABM(*abm); 242 243 kfree(abm_dce); 244 *abm = NULL; 245 } 246