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 drm_i915_private; 17 struct i915_power_well; 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) ((pipe) + POWER_DOMAIN_PIPE_A) 121 #define POWER_DOMAIN_PIPE_PANEL_FITTER(pipe) \ 122 ((pipe) + POWER_DOMAIN_PIPE_PANEL_FITTER_A) 123 #define POWER_DOMAIN_TRANSCODER(tran) \ 124 ((tran) == TRANSCODER_EDP ? POWER_DOMAIN_TRANSCODER_EDP : \ 125 (tran) + POWER_DOMAIN_TRANSCODER_A) 126 127 struct intel_power_domain_mask { 128 DECLARE_BITMAP(bits, POWER_DOMAIN_NUM); 129 }; 130 131 struct i915_power_domains { 132 /* 133 * Power wells needed for initialization at driver init and suspend 134 * time are on. They are kept on until after the first modeset. 135 */ 136 bool initializing; 137 bool display_core_suspended; 138 int power_well_count; 139 140 u32 dc_state; 141 u32 target_dc_state; 142 u32 allowed_dc_mask; 143 144 intel_wakeref_t init_wakeref; 145 intel_wakeref_t disable_wakeref; 146 147 struct mutex lock; 148 int domain_use_count[POWER_DOMAIN_NUM]; 149 150 struct delayed_work async_put_work; 151 intel_wakeref_t async_put_wakeref; 152 struct intel_power_domain_mask async_put_domains[2]; 153 int async_put_next_delay; 154 155 struct i915_power_well *power_wells; 156 }; 157 158 struct intel_display_power_domain_set { 159 struct intel_power_domain_mask mask; 160 #ifdef CONFIG_DRM_I915_DEBUG_RUNTIME_PM 161 intel_wakeref_t wakerefs[POWER_DOMAIN_NUM]; 162 #endif 163 }; 164 165 #define for_each_power_domain(__domain, __mask) \ 166 for ((__domain) = 0; (__domain) < POWER_DOMAIN_NUM; (__domain)++) \ 167 for_each_if(test_bit((__domain), (__mask)->bits)) 168 169 int intel_power_domains_init(struct drm_i915_private *dev_priv); 170 void intel_power_domains_cleanup(struct drm_i915_private *dev_priv); 171 void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume); 172 void intel_power_domains_driver_remove(struct drm_i915_private *dev_priv); 173 void intel_power_domains_enable(struct drm_i915_private *dev_priv); 174 void intel_power_domains_disable(struct drm_i915_private *dev_priv); 175 void intel_power_domains_suspend(struct drm_i915_private *dev_priv, bool s2idle); 176 void intel_power_domains_resume(struct drm_i915_private *dev_priv); 177 void intel_power_domains_sanitize_state(struct drm_i915_private *dev_priv); 178 179 void intel_display_power_suspend_late(struct drm_i915_private *i915); 180 void intel_display_power_resume_early(struct drm_i915_private *i915); 181 void intel_display_power_suspend(struct drm_i915_private *i915); 182 void intel_display_power_resume(struct drm_i915_private *i915); 183 void intel_display_power_set_target_dc_state(struct drm_i915_private *dev_priv, 184 u32 state); 185 186 const char * 187 intel_display_power_domain_str(enum intel_display_power_domain domain); 188 189 bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv, 190 enum intel_display_power_domain domain); 191 bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv, 192 enum intel_display_power_domain domain); 193 intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv, 194 enum intel_display_power_domain domain); 195 intel_wakeref_t 196 intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv, 197 enum intel_display_power_domain domain); 198 void __intel_display_power_put_async(struct drm_i915_private *i915, 199 enum intel_display_power_domain domain, 200 intel_wakeref_t wakeref, 201 int delay_ms); 202 void intel_display_power_flush_work(struct drm_i915_private *i915); 203 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM) 204 void intel_display_power_put(struct drm_i915_private *dev_priv, 205 enum intel_display_power_domain domain, 206 intel_wakeref_t wakeref); 207 static inline void 208 intel_display_power_put_async(struct drm_i915_private *i915, 209 enum intel_display_power_domain domain, 210 intel_wakeref_t wakeref) 211 { 212 __intel_display_power_put_async(i915, domain, wakeref, -1); 213 } 214 215 static inline void 216 intel_display_power_put_async_delay(struct drm_i915_private *i915, 217 enum intel_display_power_domain domain, 218 intel_wakeref_t wakeref, 219 int delay_ms) 220 { 221 __intel_display_power_put_async(i915, domain, wakeref, delay_ms); 222 } 223 #else 224 void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv, 225 enum intel_display_power_domain domain); 226 227 static inline void 228 intel_display_power_put(struct drm_i915_private *i915, 229 enum intel_display_power_domain domain, 230 intel_wakeref_t wakeref) 231 { 232 intel_display_power_put_unchecked(i915, domain); 233 } 234 235 static inline void 236 intel_display_power_put_async(struct drm_i915_private *i915, 237 enum intel_display_power_domain domain, 238 intel_wakeref_t wakeref) 239 { 240 __intel_display_power_put_async(i915, domain, -1, -1); 241 } 242 243 static inline void 244 intel_display_power_put_async_delay(struct drm_i915_private *i915, 245 enum intel_display_power_domain domain, 246 intel_wakeref_t wakeref, 247 int delay_ms) 248 { 249 __intel_display_power_put_async(i915, domain, -1, delay_ms); 250 } 251 #endif 252 253 void 254 intel_display_power_get_in_set(struct drm_i915_private *i915, 255 struct intel_display_power_domain_set *power_domain_set, 256 enum intel_display_power_domain domain); 257 258 bool 259 intel_display_power_get_in_set_if_enabled(struct drm_i915_private *i915, 260 struct intel_display_power_domain_set *power_domain_set, 261 enum intel_display_power_domain domain); 262 263 void 264 intel_display_power_put_mask_in_set(struct drm_i915_private *i915, 265 struct intel_display_power_domain_set *power_domain_set, 266 struct intel_power_domain_mask *mask); 267 268 static inline void 269 intel_display_power_put_all_in_set(struct drm_i915_private *i915, 270 struct intel_display_power_domain_set *power_domain_set) 271 { 272 intel_display_power_put_mask_in_set(i915, power_domain_set, &power_domain_set->mask); 273 } 274 275 void intel_display_power_debug(struct drm_i915_private *i915, struct seq_file *m); 276 277 enum intel_display_power_domain 278 intel_display_power_ddi_lanes_domain(struct drm_i915_private *i915, enum port port); 279 enum intel_display_power_domain 280 intel_display_power_ddi_io_domain(struct drm_i915_private *i915, enum port port); 281 enum intel_display_power_domain 282 intel_display_power_aux_io_domain(struct drm_i915_private *i915, enum aux_ch aux_ch); 283 enum intel_display_power_domain 284 intel_display_power_legacy_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch); 285 enum intel_display_power_domain 286 intel_display_power_tbt_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch); 287 288 /* 289 * FIXME: We should probably switch this to a 0-based scheme to be consistent 290 * with how we now name/number DBUF_CTL instances. 291 */ 292 enum dbuf_slice { 293 DBUF_S1, 294 DBUF_S2, 295 DBUF_S3, 296 DBUF_S4, 297 I915_MAX_DBUF_SLICES 298 }; 299 300 void gen9_dbuf_slices_update(struct drm_i915_private *dev_priv, 301 u8 req_slices); 302 303 #define with_intel_display_power(i915, domain, wf) \ 304 for ((wf) = intel_display_power_get((i915), (domain)); (wf); \ 305 intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0) 306 307 #define with_intel_display_power_if_enabled(i915, domain, wf) \ 308 for ((wf) = intel_display_power_get_if_enabled((i915), (domain)); (wf); \ 309 intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0) 310 311 #endif /* __INTEL_DISPLAY_POWER_H__ */ 312