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