1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2024 Intel Corporation 4 */ 5 6 #include <linux/workqueue.h> 7 8 #include "intel_display_core.h" 9 #include "intel_display_types.h" 10 #include "intel_encoder.h" 11 12 static void intel_encoder_link_check_work_fn(struct work_struct *work) 13 { 14 struct intel_encoder *encoder = 15 container_of(work, typeof(*encoder), link_check_work.work); 16 17 encoder->link_check(encoder); 18 } 19 20 void intel_encoder_link_check_init(struct intel_encoder *encoder, 21 void (*callback)(struct intel_encoder *encoder)) 22 { 23 INIT_DELAYED_WORK(&encoder->link_check_work, intel_encoder_link_check_work_fn); 24 encoder->link_check = callback; 25 } 26 27 void intel_encoder_link_check_flush_work(struct intel_encoder *encoder) 28 { 29 cancel_delayed_work_sync(&encoder->link_check_work); 30 } 31 32 void intel_encoder_link_check_queue_work(struct intel_encoder *encoder, int delay_ms) 33 { 34 struct intel_display *display = to_intel_display(encoder); 35 36 mod_delayed_work(display->wq.unordered, 37 &encoder->link_check_work, msecs_to_jiffies(delay_ms)); 38 } 39 40 void intel_encoder_suspend_all(struct intel_display *display) 41 { 42 struct intel_encoder *encoder; 43 44 if (!HAS_DISPLAY(display)) 45 return; 46 47 /* 48 * TODO: check and remove holding the modeset locks if none of 49 * the encoders depends on this. 50 */ 51 drm_modeset_lock_all(display->drm); 52 for_each_intel_encoder(display->drm, encoder) 53 if (encoder->suspend) 54 encoder->suspend(encoder); 55 drm_modeset_unlock_all(display->drm); 56 57 for_each_intel_encoder(display->drm, encoder) 58 if (encoder->suspend_complete) 59 encoder->suspend_complete(encoder); 60 } 61 62 void intel_encoder_shutdown_all(struct intel_display *display) 63 { 64 struct intel_encoder *encoder; 65 66 if (!HAS_DISPLAY(display)) 67 return; 68 69 /* 70 * TODO: check and remove holding the modeset locks if none of 71 * the encoders depends on this. 72 */ 73 drm_modeset_lock_all(display->drm); 74 for_each_intel_encoder(display->drm, encoder) 75 if (encoder->shutdown) 76 encoder->shutdown(encoder); 77 drm_modeset_unlock_all(display->drm); 78 79 for_each_intel_encoder(display->drm, encoder) 80 if (encoder->shutdown_complete) 81 encoder->shutdown_complete(encoder); 82 } 83