1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2023 Intel Corporation 4 */ 5 6 #include "xe_display.h" 7 #include "regs/xe_regs.h" 8 9 #include <linux/fb.h> 10 11 #include <drm/drm_drv.h> 12 #include <drm/drm_managed.h> 13 #include <drm/xe_drm.h> 14 15 #include "soc/intel_dram.h" 16 #include "i915_drv.h" /* FIXME: HAS_DISPLAY() depends on this */ 17 #include "intel_acpi.h" 18 #include "intel_audio.h" 19 #include "intel_bw.h" 20 #include "intel_display.h" 21 #include "intel_display_driver.h" 22 #include "intel_display_irq.h" 23 #include "intel_display_types.h" 24 #include "intel_dmc.h" 25 #include "intel_dp.h" 26 #include "intel_fbdev.h" 27 #include "intel_hdcp.h" 28 #include "intel_hotplug.h" 29 #include "intel_opregion.h" 30 #include "xe_module.h" 31 32 /* Xe device functions */ 33 34 static bool has_display(struct xe_device *xe) 35 { 36 return HAS_DISPLAY(xe); 37 } 38 39 /** 40 * xe_display_driver_probe_defer - Detect if we need to wait for other drivers 41 * early on 42 * @pdev: PCI device 43 * 44 * Returns: true if probe needs to be deferred, false otherwise 45 */ 46 bool xe_display_driver_probe_defer(struct pci_dev *pdev) 47 { 48 if (!xe_modparam.enable_display) 49 return 0; 50 51 return intel_display_driver_probe_defer(pdev); 52 } 53 54 static void xe_display_last_close(struct drm_device *dev) 55 { 56 struct xe_device *xe = to_xe_device(dev); 57 58 if (xe->info.enable_display) 59 intel_fbdev_restore_mode(to_xe_device(dev)); 60 } 61 62 /** 63 * xe_display_driver_set_hooks - Add driver flags and hooks for display 64 * @driver: DRM device driver 65 * 66 * Set features and function hooks in @driver that are needed for driving the 67 * display IP. This sets the driver's capability of driving display, regardless 68 * if the device has it enabled 69 */ 70 void xe_display_driver_set_hooks(struct drm_driver *driver) 71 { 72 if (!xe_modparam.enable_display) 73 return; 74 75 driver->driver_features |= DRIVER_MODESET | DRIVER_ATOMIC; 76 driver->lastclose = xe_display_last_close; 77 } 78 79 static void unset_display_features(struct xe_device *xe) 80 { 81 xe->drm.driver_features &= ~(DRIVER_MODESET | DRIVER_ATOMIC); 82 } 83 84 static void display_destroy(struct drm_device *dev, void *dummy) 85 { 86 struct xe_device *xe = to_xe_device(dev); 87 88 destroy_workqueue(xe->display.hotplug.dp_wq); 89 } 90 91 /** 92 * xe_display_create - create display struct 93 * @xe: XE device instance 94 * 95 * Initialize all fields used by the display part. 96 * 97 * TODO: once everything can be inside a single struct, make the struct opaque 98 * to the rest of xe and return it to be xe->display. 99 * 100 * Returns: 0 on success 101 */ 102 int xe_display_create(struct xe_device *xe) 103 { 104 spin_lock_init(&xe->display.fb_tracking.lock); 105 106 xe->display.hotplug.dp_wq = alloc_ordered_workqueue("xe-dp", 0); 107 108 drmm_mutex_init(&xe->drm, &xe->sb_lock); 109 xe->enabled_irq_mask = ~0; 110 111 return drmm_add_action_or_reset(&xe->drm, display_destroy, NULL); 112 } 113 114 static void xe_display_fini_nommio(struct drm_device *dev, void *dummy) 115 { 116 struct xe_device *xe = to_xe_device(dev); 117 118 if (!xe->info.enable_display) 119 return; 120 121 intel_power_domains_cleanup(xe); 122 } 123 124 int xe_display_init_nommio(struct xe_device *xe) 125 { 126 if (!xe->info.enable_display) 127 return 0; 128 129 /* Fake uncore lock */ 130 spin_lock_init(&xe->uncore.lock); 131 132 /* This must be called before any calls to HAS_PCH_* */ 133 intel_detect_pch(xe); 134 135 return drmm_add_action_or_reset(&xe->drm, xe_display_fini_nommio, xe); 136 } 137 138 static void xe_display_fini_noirq(struct drm_device *dev, void *dummy) 139 { 140 struct xe_device *xe = to_xe_device(dev); 141 142 if (!xe->info.enable_display) 143 return; 144 145 intel_display_driver_remove_noirq(xe); 146 intel_power_domains_driver_remove(xe); 147 } 148 149 int xe_display_init_noirq(struct xe_device *xe) 150 { 151 int err; 152 153 if (!xe->info.enable_display) 154 return 0; 155 156 intel_display_driver_early_probe(xe); 157 158 /* Early display init.. */ 159 intel_opregion_setup(xe); 160 161 /* 162 * Fill the dram structure to get the system dram info. This will be 163 * used for memory latency calculation. 164 */ 165 intel_dram_detect(xe); 166 167 intel_bw_init_hw(xe); 168 169 intel_display_device_info_runtime_init(xe); 170 171 err = intel_display_driver_probe_noirq(xe); 172 if (err) 173 return err; 174 175 return drmm_add_action_or_reset(&xe->drm, xe_display_fini_noirq, NULL); 176 } 177 178 static void xe_display_fini_noaccel(struct drm_device *dev, void *dummy) 179 { 180 struct xe_device *xe = to_xe_device(dev); 181 182 if (!xe->info.enable_display) 183 return; 184 185 intel_display_driver_remove_nogem(xe); 186 } 187 188 int xe_display_init_noaccel(struct xe_device *xe) 189 { 190 int err; 191 192 if (!xe->info.enable_display) 193 return 0; 194 195 err = intel_display_driver_probe_nogem(xe); 196 if (err) 197 return err; 198 199 return drmm_add_action_or_reset(&xe->drm, xe_display_fini_noaccel, NULL); 200 } 201 202 int xe_display_init(struct xe_device *xe) 203 { 204 if (!xe->info.enable_display) 205 return 0; 206 207 return intel_display_driver_probe(xe); 208 } 209 210 void xe_display_fini(struct xe_device *xe) 211 { 212 if (!xe->info.enable_display) 213 return; 214 215 /* poll work can call into fbdev, hence clean that up afterwards */ 216 intel_hpd_poll_fini(xe); 217 intel_fbdev_fini(xe); 218 219 intel_hdcp_component_fini(xe); 220 intel_audio_deinit(xe); 221 } 222 223 void xe_display_register(struct xe_device *xe) 224 { 225 if (!xe->info.enable_display) 226 return; 227 228 intel_display_driver_register(xe); 229 intel_register_dsm_handler(); 230 intel_power_domains_enable(xe); 231 } 232 233 void xe_display_unregister(struct xe_device *xe) 234 { 235 if (!xe->info.enable_display) 236 return; 237 238 intel_unregister_dsm_handler(); 239 intel_power_domains_disable(xe); 240 intel_display_driver_unregister(xe); 241 } 242 243 void xe_display_driver_remove(struct xe_device *xe) 244 { 245 if (!xe->info.enable_display) 246 return; 247 248 intel_display_driver_remove(xe); 249 250 intel_display_device_remove(xe); 251 } 252 253 /* IRQ-related functions */ 254 255 void xe_display_irq_handler(struct xe_device *xe, u32 master_ctl) 256 { 257 if (!xe->info.enable_display) 258 return; 259 260 if (master_ctl & DISPLAY_IRQ) 261 gen11_display_irq_handler(xe); 262 } 263 264 void xe_display_irq_enable(struct xe_device *xe, u32 gu_misc_iir) 265 { 266 if (!xe->info.enable_display) 267 return; 268 269 if (gu_misc_iir & GU_MISC_GSE) 270 intel_opregion_asle_intr(xe); 271 } 272 273 void xe_display_irq_reset(struct xe_device *xe) 274 { 275 if (!xe->info.enable_display) 276 return; 277 278 gen11_display_irq_reset(xe); 279 } 280 281 void xe_display_irq_postinstall(struct xe_device *xe, struct xe_gt *gt) 282 { 283 if (!xe->info.enable_display) 284 return; 285 286 if (gt->info.id == XE_GT0) 287 gen11_de_irq_postinstall(xe); 288 } 289 290 static void intel_suspend_encoders(struct xe_device *xe) 291 { 292 struct drm_device *dev = &xe->drm; 293 struct intel_encoder *encoder; 294 295 if (has_display(xe)) 296 return; 297 298 drm_modeset_lock_all(dev); 299 for_each_intel_encoder(dev, encoder) 300 if (encoder->suspend) 301 encoder->suspend(encoder); 302 drm_modeset_unlock_all(dev); 303 } 304 305 static bool suspend_to_idle(void) 306 { 307 #if IS_ENABLED(CONFIG_ACPI_SLEEP) 308 if (acpi_target_system_state() < ACPI_STATE_S3) 309 return true; 310 #endif 311 return false; 312 } 313 314 void xe_display_pm_suspend(struct xe_device *xe) 315 { 316 bool s2idle = suspend_to_idle(); 317 if (!xe->info.enable_display) 318 return; 319 320 /* 321 * We do a lot of poking in a lot of registers, make sure they work 322 * properly. 323 */ 324 intel_power_domains_disable(xe); 325 if (has_display(xe)) 326 drm_kms_helper_poll_disable(&xe->drm); 327 328 intel_display_driver_suspend(xe); 329 330 intel_dp_mst_suspend(xe); 331 332 intel_hpd_cancel_work(xe); 333 334 intel_suspend_encoders(xe); 335 336 intel_opregion_suspend(xe, s2idle ? PCI_D1 : PCI_D3cold); 337 338 intel_fbdev_set_suspend(&xe->drm, FBINFO_STATE_SUSPENDED, true); 339 340 intel_dmc_suspend(xe); 341 } 342 343 void xe_display_pm_suspend_late(struct xe_device *xe) 344 { 345 bool s2idle = suspend_to_idle(); 346 if (!xe->info.enable_display) 347 return; 348 349 intel_power_domains_suspend(xe, s2idle); 350 351 intel_display_power_suspend_late(xe); 352 } 353 354 void xe_display_pm_resume_early(struct xe_device *xe) 355 { 356 if (!xe->info.enable_display) 357 return; 358 359 intel_display_power_resume_early(xe); 360 361 intel_power_domains_resume(xe); 362 } 363 364 void xe_display_pm_resume(struct xe_device *xe) 365 { 366 if (!xe->info.enable_display) 367 return; 368 369 intel_dmc_resume(xe); 370 371 if (has_display(xe)) 372 drm_mode_config_reset(&xe->drm); 373 374 intel_display_driver_init_hw(xe); 375 intel_hpd_init(xe); 376 377 /* MST sideband requires HPD interrupts enabled */ 378 intel_dp_mst_resume(xe); 379 intel_display_driver_resume(xe); 380 381 intel_hpd_poll_disable(xe); 382 if (has_display(xe)) 383 drm_kms_helper_poll_enable(&xe->drm); 384 385 intel_opregion_resume(xe); 386 387 intel_fbdev_set_suspend(&xe->drm, FBINFO_STATE_RUNNING, false); 388 389 intel_power_domains_enable(xe); 390 } 391 392 void xe_display_probe(struct xe_device *xe) 393 { 394 if (!xe->info.enable_display) 395 goto no_display; 396 397 intel_display_device_probe(xe); 398 399 if (has_display(xe)) 400 return; 401 402 no_display: 403 xe->info.enable_display = false; 404 unset_display_features(xe); 405 } 406