1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2019 Intel Corporation 4 */ 5 6 #ifndef __INTEL_DISPLAY_POWER_H__ 7 #define __INTEL_DISPLAY_POWER_H__ 8 9 #include <linux/mutex.h> 10 #include <linux/workqueue.h> 11 12 #include "intel_wakeref.h" 13 14 enum aux_ch; 15 enum port; 16 struct i915_power_well; 17 struct intel_display; 18 struct intel_encoder; 19 struct seq_file; 20 21 /* 22 * Keep the pipe, transcoder, port (DDI_LANES,DDI_IO,AUX) domain instances 23 * consecutive, so that the pipe,transcoder,port -> power domain macros 24 * work correctly. 25 */ 26 enum intel_display_power_domain { 27 POWER_DOMAIN_DISPLAY_CORE, 28 POWER_DOMAIN_PIPE_A, 29 POWER_DOMAIN_PIPE_B, 30 POWER_DOMAIN_PIPE_C, 31 POWER_DOMAIN_PIPE_D, 32 POWER_DOMAIN_PIPE_PANEL_FITTER_A, 33 POWER_DOMAIN_PIPE_PANEL_FITTER_B, 34 POWER_DOMAIN_PIPE_PANEL_FITTER_C, 35 POWER_DOMAIN_PIPE_PANEL_FITTER_D, 36 POWER_DOMAIN_TRANSCODER_A, 37 POWER_DOMAIN_TRANSCODER_B, 38 POWER_DOMAIN_TRANSCODER_C, 39 POWER_DOMAIN_TRANSCODER_D, 40 POWER_DOMAIN_TRANSCODER_EDP, 41 POWER_DOMAIN_TRANSCODER_DSI_A, 42 POWER_DOMAIN_TRANSCODER_DSI_C, 43 44 /* VDSC/joining for eDP/DSI transcoder (ICL) or pipe A (TGL) */ 45 POWER_DOMAIN_TRANSCODER_VDSC_PW2, 46 47 POWER_DOMAIN_PORT_DDI_LANES_A, 48 POWER_DOMAIN_PORT_DDI_LANES_B, 49 POWER_DOMAIN_PORT_DDI_LANES_C, 50 POWER_DOMAIN_PORT_DDI_LANES_D, 51 POWER_DOMAIN_PORT_DDI_LANES_E, 52 POWER_DOMAIN_PORT_DDI_LANES_F, 53 54 POWER_DOMAIN_PORT_DDI_LANES_TC1, 55 POWER_DOMAIN_PORT_DDI_LANES_TC2, 56 POWER_DOMAIN_PORT_DDI_LANES_TC3, 57 POWER_DOMAIN_PORT_DDI_LANES_TC4, 58 POWER_DOMAIN_PORT_DDI_LANES_TC5, 59 POWER_DOMAIN_PORT_DDI_LANES_TC6, 60 61 POWER_DOMAIN_PORT_DDI_IO_A, 62 POWER_DOMAIN_PORT_DDI_IO_B, 63 POWER_DOMAIN_PORT_DDI_IO_C, 64 POWER_DOMAIN_PORT_DDI_IO_D, 65 POWER_DOMAIN_PORT_DDI_IO_E, 66 POWER_DOMAIN_PORT_DDI_IO_F, 67 68 POWER_DOMAIN_PORT_DDI_IO_TC1, 69 POWER_DOMAIN_PORT_DDI_IO_TC2, 70 POWER_DOMAIN_PORT_DDI_IO_TC3, 71 POWER_DOMAIN_PORT_DDI_IO_TC4, 72 POWER_DOMAIN_PORT_DDI_IO_TC5, 73 POWER_DOMAIN_PORT_DDI_IO_TC6, 74 75 POWER_DOMAIN_PORT_DSI, 76 POWER_DOMAIN_PORT_CRT, 77 POWER_DOMAIN_PORT_OTHER, 78 POWER_DOMAIN_VGA, 79 POWER_DOMAIN_AUDIO_MMIO, 80 POWER_DOMAIN_AUDIO_PLAYBACK, 81 82 POWER_DOMAIN_AUX_IO_A, 83 POWER_DOMAIN_AUX_IO_B, 84 POWER_DOMAIN_AUX_IO_C, 85 POWER_DOMAIN_AUX_IO_D, 86 POWER_DOMAIN_AUX_IO_E, 87 POWER_DOMAIN_AUX_IO_F, 88 89 POWER_DOMAIN_AUX_A, 90 POWER_DOMAIN_AUX_B, 91 POWER_DOMAIN_AUX_C, 92 POWER_DOMAIN_AUX_D, 93 POWER_DOMAIN_AUX_E, 94 POWER_DOMAIN_AUX_F, 95 96 POWER_DOMAIN_AUX_USBC1, 97 POWER_DOMAIN_AUX_USBC2, 98 POWER_DOMAIN_AUX_USBC3, 99 POWER_DOMAIN_AUX_USBC4, 100 POWER_DOMAIN_AUX_USBC5, 101 POWER_DOMAIN_AUX_USBC6, 102 103 POWER_DOMAIN_AUX_TBT1, 104 POWER_DOMAIN_AUX_TBT2, 105 POWER_DOMAIN_AUX_TBT3, 106 POWER_DOMAIN_AUX_TBT4, 107 POWER_DOMAIN_AUX_TBT5, 108 POWER_DOMAIN_AUX_TBT6, 109 110 POWER_DOMAIN_GMBUS, 111 POWER_DOMAIN_GT_IRQ, 112 POWER_DOMAIN_DC_OFF, 113 POWER_DOMAIN_TC_COLD_OFF, 114 POWER_DOMAIN_INIT, 115 116 POWER_DOMAIN_NUM, 117 POWER_DOMAIN_INVALID = POWER_DOMAIN_NUM, 118 }; 119 120 #define POWER_DOMAIN_PIPE(pipe) \ 121 ((enum intel_display_power_domain)((pipe) - PIPE_A + POWER_DOMAIN_PIPE_A)) 122 #define POWER_DOMAIN_PIPE_PANEL_FITTER(pipe) \ 123 ((enum intel_display_power_domain)((pipe) - PIPE_A + POWER_DOMAIN_PIPE_PANEL_FITTER_A)) 124 #define POWER_DOMAIN_TRANSCODER(tran) \ 125 ((tran) == TRANSCODER_EDP ? POWER_DOMAIN_TRANSCODER_EDP : \ 126 (enum intel_display_power_domain)((tran) - TRANSCODER_A + POWER_DOMAIN_TRANSCODER_A)) 127 128 struct intel_power_domain_mask { 129 DECLARE_BITMAP(bits, POWER_DOMAIN_NUM); 130 }; 131 132 struct i915_power_domains { 133 /* 134 * Power wells needed for initialization at driver init and suspend 135 * time are on. They are kept on until after the first modeset. 136 */ 137 bool initializing; 138 bool display_core_suspended; 139 int power_well_count; 140 141 u32 dc_state; 142 u32 target_dc_state; 143 u32 allowed_dc_mask; 144 145 intel_wakeref_t init_wakeref; 146 intel_wakeref_t disable_wakeref; 147 148 struct mutex lock; 149 int domain_use_count[POWER_DOMAIN_NUM]; 150 151 struct delayed_work async_put_work; 152 intel_wakeref_t async_put_wakeref; 153 struct intel_power_domain_mask async_put_domains[2]; 154 int async_put_next_delay; 155 156 struct i915_power_well *power_wells; 157 }; 158 159 struct intel_display_power_domain_set { 160 struct intel_power_domain_mask mask; 161 #ifdef CONFIG_DRM_I915_DEBUG_RUNTIME_PM 162 intel_wakeref_t wakerefs[POWER_DOMAIN_NUM]; 163 #endif 164 }; 165 166 #define for_each_power_domain(__domain, __mask) \ 167 for ((__domain) = 0; (__domain) < POWER_DOMAIN_NUM; (__domain)++) \ 168 for_each_if(test_bit((__domain), (__mask)->bits)) 169 170 int intel_power_domains_init(struct intel_display *display); 171 void intel_power_domains_cleanup(struct intel_display *display); 172 void intel_power_domains_init_hw(struct intel_display *display, bool resume); 173 void intel_power_domains_driver_remove(struct intel_display *display); 174 void intel_power_domains_enable(struct intel_display *display); 175 void intel_power_domains_disable(struct intel_display *display); 176 void intel_power_domains_suspend(struct intel_display *display, bool s2idle); 177 void intel_power_domains_resume(struct intel_display *display); 178 void intel_power_domains_sanitize_state(struct intel_display *display); 179 180 void intel_display_power_suspend_late(struct intel_display *display, bool s2idle); 181 void intel_display_power_resume_early(struct intel_display *display); 182 void intel_display_power_suspend(struct intel_display *display); 183 void intel_display_power_resume(struct intel_display *display); 184 void intel_display_power_set_target_dc_state(struct intel_display *display, 185 u32 state); 186 u32 intel_display_power_get_current_dc_state(struct intel_display *display); 187 188 bool intel_display_power_is_enabled(struct intel_display *display, 189 enum intel_display_power_domain domain); 190 intel_wakeref_t intel_display_power_get(struct intel_display *display, 191 enum intel_display_power_domain domain); 192 intel_wakeref_t 193 intel_display_power_get_if_enabled(struct intel_display *display, 194 enum intel_display_power_domain domain); 195 void __intel_display_power_put_async(struct intel_display *display, 196 enum intel_display_power_domain domain, 197 intel_wakeref_t wakeref, 198 int delay_ms); 199 void intel_display_power_flush_work(struct intel_display *display); 200 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM) 201 void intel_display_power_put(struct intel_display *display, 202 enum intel_display_power_domain domain, 203 intel_wakeref_t wakeref); 204 static inline void 205 intel_display_power_put_async(struct intel_display *display, 206 enum intel_display_power_domain domain, 207 intel_wakeref_t wakeref) 208 { 209 __intel_display_power_put_async(display, domain, wakeref, -1); 210 } 211 212 static inline void 213 intel_display_power_put_async_delay(struct intel_display *display, 214 enum intel_display_power_domain domain, 215 intel_wakeref_t wakeref, 216 int delay_ms) 217 { 218 __intel_display_power_put_async(display, domain, wakeref, delay_ms); 219 } 220 #else 221 void intel_display_power_put_unchecked(struct intel_display *display, 222 enum intel_display_power_domain domain); 223 224 static inline void 225 intel_display_power_put(struct intel_display *display, 226 enum intel_display_power_domain domain, 227 intel_wakeref_t wakeref) 228 { 229 intel_display_power_put_unchecked(display, domain); 230 } 231 232 static inline void 233 intel_display_power_put_async(struct intel_display *display, 234 enum intel_display_power_domain domain, 235 intel_wakeref_t wakeref) 236 { 237 __intel_display_power_put_async(display, domain, INTEL_WAKEREF_DEF, -1); 238 } 239 240 static inline void 241 intel_display_power_put_async_delay(struct intel_display *display, 242 enum intel_display_power_domain domain, 243 intel_wakeref_t wakeref, 244 int delay_ms) 245 { 246 __intel_display_power_put_async(display, domain, INTEL_WAKEREF_DEF, delay_ms); 247 } 248 #endif 249 250 void 251 intel_display_power_get_in_set(struct intel_display *display, 252 struct intel_display_power_domain_set *power_domain_set, 253 enum intel_display_power_domain domain); 254 255 bool 256 intel_display_power_get_in_set_if_enabled(struct intel_display *display, 257 struct intel_display_power_domain_set *power_domain_set, 258 enum intel_display_power_domain domain); 259 260 void 261 intel_display_power_put_mask_in_set(struct intel_display *display, 262 struct intel_display_power_domain_set *power_domain_set, 263 struct intel_power_domain_mask *mask); 264 265 static inline void 266 intel_display_power_put_all_in_set(struct intel_display *display, 267 struct intel_display_power_domain_set *power_domain_set) 268 { 269 intel_display_power_put_mask_in_set(display, power_domain_set, &power_domain_set->mask); 270 } 271 272 void intel_display_power_debug(struct intel_display *display, struct seq_file *m); 273 274 enum intel_display_power_domain 275 intel_display_power_ddi_lanes_domain(struct intel_display *display, enum port port); 276 enum intel_display_power_domain 277 intel_display_power_ddi_io_domain(struct intel_display *display, enum port port); 278 enum intel_display_power_domain 279 intel_display_power_aux_io_domain(struct intel_display *display, enum aux_ch aux_ch); 280 enum intel_display_power_domain 281 intel_display_power_legacy_aux_domain(struct intel_display *display, enum aux_ch aux_ch); 282 enum intel_display_power_domain 283 intel_display_power_tbt_aux_domain(struct intel_display *display, enum aux_ch aux_ch); 284 285 /* 286 * FIXME: We should probably switch this to a 0-based scheme to be consistent 287 * with how we now name/number DBUF_CTL instances. 288 */ 289 enum dbuf_slice { 290 DBUF_S1, 291 DBUF_S2, 292 DBUF_S3, 293 DBUF_S4, 294 I915_MAX_DBUF_SLICES 295 }; 296 297 void gen9_dbuf_slices_update(struct intel_display *display, 298 u8 req_slices); 299 300 #define with_intel_display_power(display, domain, wf) \ 301 for ((wf) = intel_display_power_get((display), (domain)); (wf); \ 302 intel_display_power_put_async((display), (domain), (wf)), (wf) = NULL) 303 304 #define with_intel_display_power_if_enabled(display, domain, wf) \ 305 for ((wf) = intel_display_power_get_if_enabled((display), (domain)); (wf); \ 306 intel_display_power_put_async((display), (domain), (wf)), (wf) = NULL) 307 308 #endif /* __INTEL_DISPLAY_POWER_H__ */ 309