1 // SPDX-License-Identifier: MIT
3 * Copyright © 2023 Intel Corporation
6 #include "xe_display.h"
7 #include "regs/xe_regs.h"
11 #include <drm/drm_drv.h>
12 #include <drm/drm_managed.h>
13 #include <drm/xe_drm.h>
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"
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"
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"
32 /* Xe device functions */
34 static bool has_display(struct xe_device *xe)
36 return HAS_DISPLAY(xe);
40 * xe_display_driver_probe_defer - Detect if we need to wait for other drivers
44 * Returns: true if probe needs to be deferred, false otherwise
46 bool xe_display_driver_probe_defer(struct pci_dev *pdev)
48 if (!xe_modparam.enable_display)
51 return intel_display_driver_probe_defer(pdev);
54 static void xe_display_last_close(struct drm_device *dev)
56 struct xe_device *xe = to_xe_device(dev);
58 if (xe->info.enable_display)
59 intel_fbdev_restore_mode(to_xe_device(dev));
63 * xe_display_driver_set_hooks - Add driver flags and hooks for display
64 * @driver: DRM device driver
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
70 void xe_display_driver_set_hooks(struct drm_driver *driver)
72 if (!xe_modparam.enable_display)
75 driver->driver_features |= DRIVER_MODESET | DRIVER_ATOMIC;
76 driver->lastclose = xe_display_last_close;
79 static void unset_display_features(struct xe_device *xe)
81 xe->drm.driver_features &= ~(DRIVER_MODESET | DRIVER_ATOMIC);
84 static void display_destroy(struct drm_device *dev, void *dummy)
86 struct xe_device *xe = to_xe_device(dev);
88 destroy_workqueue(xe->display.hotplug.dp_wq);
92 * xe_display_create - create display struct
93 * @xe: XE device instance
95 * Initialize all fields used by the display part.
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.
100 * Returns: 0 on success
102 int xe_display_create(struct xe_device *xe)
106 spin_lock_init(&xe->display.fb_tracking.lock);
108 xe->display.hotplug.dp_wq = alloc_ordered_workqueue("xe-dp", 0);
110 drmm_mutex_init(&xe->drm, &xe->sb_lock);
111 drmm_mutex_init(&xe->drm, &xe->display.backlight.lock);
112 drmm_mutex_init(&xe->drm, &xe->display.audio.mutex);
113 drmm_mutex_init(&xe->drm, &xe->display.wm.wm_mutex);
114 drmm_mutex_init(&xe->drm, &xe->display.pps.mutex);
115 drmm_mutex_init(&xe->drm, &xe->display.hdcp.hdcp_mutex);
116 xe->enabled_irq_mask = ~0;
118 err = drmm_add_action_or_reset(&xe->drm, display_destroy, NULL);
125 static void xe_display_fini_nommio(struct drm_device *dev, void *dummy)
127 struct xe_device *xe = to_xe_device(dev);
129 if (!xe->info.enable_display)
132 intel_power_domains_cleanup(xe);
135 int xe_display_init_nommio(struct xe_device *xe)
137 if (!xe->info.enable_display)
140 /* Fake uncore lock */
141 spin_lock_init(&xe->uncore.lock);
143 /* This must be called before any calls to HAS_PCH_* */
144 intel_detect_pch(xe);
146 return drmm_add_action_or_reset(&xe->drm, xe_display_fini_nommio, xe);
149 static void xe_display_fini_noirq(struct drm_device *dev, void *dummy)
151 struct xe_device *xe = to_xe_device(dev);
153 if (!xe->info.enable_display)
156 intel_display_driver_remove_noirq(xe);
157 intel_power_domains_driver_remove(xe);
160 int xe_display_init_noirq(struct xe_device *xe)
164 if (!xe->info.enable_display)
167 intel_display_driver_early_probe(xe);
169 /* Early display init.. */
170 intel_opregion_setup(xe);
173 * Fill the dram structure to get the system dram info. This will be
174 * used for memory latency calculation.
176 intel_dram_detect(xe);
178 intel_bw_init_hw(xe);
180 intel_display_device_info_runtime_init(xe);
182 err = intel_display_driver_probe_noirq(xe);
186 return drmm_add_action_or_reset(&xe->drm, xe_display_fini_noirq, NULL);
189 static void xe_display_fini_noaccel(struct drm_device *dev, void *dummy)
191 struct xe_device *xe = to_xe_device(dev);
193 if (!xe->info.enable_display)
196 intel_display_driver_remove_nogem(xe);
199 int xe_display_init_noaccel(struct xe_device *xe)
203 if (!xe->info.enable_display)
206 err = intel_display_driver_probe_nogem(xe);
210 return drmm_add_action_or_reset(&xe->drm, xe_display_fini_noaccel, NULL);
213 int xe_display_init(struct xe_device *xe)
215 if (!xe->info.enable_display)
218 return intel_display_driver_probe(xe);
221 void xe_display_fini(struct xe_device *xe)
223 if (!xe->info.enable_display)
226 /* poll work can call into fbdev, hence clean that up afterwards */
227 intel_hpd_poll_fini(xe);
228 intel_fbdev_fini(xe);
230 intel_hdcp_component_fini(xe);
231 intel_audio_deinit(xe);
234 void xe_display_register(struct xe_device *xe)
236 if (!xe->info.enable_display)
239 intel_display_driver_register(xe);
240 intel_register_dsm_handler();
241 intel_power_domains_enable(xe);
244 void xe_display_unregister(struct xe_device *xe)
246 if (!xe->info.enable_display)
249 intel_unregister_dsm_handler();
250 intel_power_domains_disable(xe);
251 intel_display_driver_unregister(xe);
254 void xe_display_driver_remove(struct xe_device *xe)
256 if (!xe->info.enable_display)
259 intel_display_driver_remove(xe);
261 intel_display_device_remove(xe);
264 /* IRQ-related functions */
266 void xe_display_irq_handler(struct xe_device *xe, u32 master_ctl)
268 if (!xe->info.enable_display)
271 if (master_ctl & DISPLAY_IRQ)
272 gen11_display_irq_handler(xe);
275 void xe_display_irq_enable(struct xe_device *xe, u32 gu_misc_iir)
277 if (!xe->info.enable_display)
280 if (gu_misc_iir & GU_MISC_GSE)
281 intel_opregion_asle_intr(xe);
284 void xe_display_irq_reset(struct xe_device *xe)
286 if (!xe->info.enable_display)
289 gen11_display_irq_reset(xe);
292 void xe_display_irq_postinstall(struct xe_device *xe, struct xe_gt *gt)
294 if (!xe->info.enable_display)
297 if (gt->info.id == XE_GT0)
298 gen11_de_irq_postinstall(xe);
301 static void intel_suspend_encoders(struct xe_device *xe)
303 struct drm_device *dev = &xe->drm;
304 struct intel_encoder *encoder;
309 drm_modeset_lock_all(dev);
310 for_each_intel_encoder(dev, encoder)
311 if (encoder->suspend)
312 encoder->suspend(encoder);
313 drm_modeset_unlock_all(dev);
316 static bool suspend_to_idle(void)
318 #if IS_ENABLED(CONFIG_ACPI_SLEEP)
319 if (acpi_target_system_state() < ACPI_STATE_S3)
325 void xe_display_pm_suspend(struct xe_device *xe)
327 bool s2idle = suspend_to_idle();
328 if (!xe->info.enable_display)
332 * We do a lot of poking in a lot of registers, make sure they work
335 intel_power_domains_disable(xe);
337 drm_kms_helper_poll_disable(&xe->drm);
339 intel_display_driver_suspend(xe);
341 intel_dp_mst_suspend(xe);
343 intel_hpd_cancel_work(xe);
345 intel_suspend_encoders(xe);
347 intel_opregion_suspend(xe, s2idle ? PCI_D1 : PCI_D3cold);
349 intel_fbdev_set_suspend(&xe->drm, FBINFO_STATE_SUSPENDED, true);
351 intel_dmc_suspend(xe);
354 void xe_display_pm_suspend_late(struct xe_device *xe)
356 bool s2idle = suspend_to_idle();
357 if (!xe->info.enable_display)
360 intel_power_domains_suspend(xe, s2idle);
362 intel_display_power_suspend_late(xe);
365 void xe_display_pm_resume_early(struct xe_device *xe)
367 if (!xe->info.enable_display)
370 intel_display_power_resume_early(xe);
372 intel_power_domains_resume(xe);
375 void xe_display_pm_resume(struct xe_device *xe)
377 if (!xe->info.enable_display)
380 intel_dmc_resume(xe);
383 drm_mode_config_reset(&xe->drm);
385 intel_display_driver_init_hw(xe);
388 /* MST sideband requires HPD interrupts enabled */
389 intel_dp_mst_resume(xe);
390 intel_display_driver_resume(xe);
392 intel_hpd_poll_disable(xe);
394 drm_kms_helper_poll_enable(&xe->drm);
396 intel_opregion_resume(xe);
398 intel_fbdev_set_suspend(&xe->drm, FBINFO_STATE_RUNNING, false);
400 intel_power_domains_enable(xe);
403 void xe_display_probe(struct xe_device *xe)
405 if (!xe->info.enable_display)
408 intel_display_device_probe(xe);
414 xe->info.enable_display = false;
415 unset_display_features(xe);