1// SPDX-License-Identifier: MIT
 2/*
 3 * Copyright © 2024 Intel Corporation
 4 */
 5
 6#include <linux/workqueue.h>
 7
 8#include "i915_drv.h"
 9
10#include "intel_display_types.h"
11#include "intel_encoder.h"
12
13static void intel_encoder_link_check_work_fn(struct work_struct *work)
14{
15	struct intel_encoder *encoder =
16		container_of(work, typeof(*encoder), link_check_work.work);
17
18	encoder->link_check(encoder);
19}
20
21void intel_encoder_link_check_init(struct intel_encoder *encoder,
22				   void (*callback)(struct intel_encoder *encoder))
23{
24	INIT_DELAYED_WORK(&encoder->link_check_work, intel_encoder_link_check_work_fn);
25	encoder->link_check = callback;
26}
27
28void intel_encoder_link_check_flush_work(struct intel_encoder *encoder)
29{
30	cancel_delayed_work_sync(&encoder->link_check_work);
31}
32
33void intel_encoder_link_check_queue_work(struct intel_encoder *encoder, int delay_ms)
34{
35	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
36
37	mod_delayed_work(i915->unordered_wq,
38			 &encoder->link_check_work, msecs_to_jiffies(delay_ms));
39}
40
41void intel_encoder_suspend_all(struct intel_display *display)
42{
43	struct intel_encoder *encoder;
44
45	if (!HAS_DISPLAY(display))
46		return;
47
48	/*
49	 * TODO: check and remove holding the modeset locks if none of
50	 * the encoders depends on this.
51	 */
52	drm_modeset_lock_all(display->drm);
53	for_each_intel_encoder(display->drm, encoder)
54		if (encoder->suspend)
55			encoder->suspend(encoder);
56	drm_modeset_unlock_all(display->drm);
57
58	for_each_intel_encoder(display->drm, encoder)
59		if (encoder->suspend_complete)
60			encoder->suspend_complete(encoder);
61}
62
63void intel_encoder_shutdown_all(struct intel_display *display)
64{
65	struct intel_encoder *encoder;
66
67	if (!HAS_DISPLAY(display))
68		return;
69
70	/*
71	 * TODO: check and remove holding the modeset locks if none of
72	 * the encoders depends on this.
73	 */
74	drm_modeset_lock_all(display->drm);
75	for_each_intel_encoder(display->drm, encoder)
76		if (encoder->shutdown)
77			encoder->shutdown(encoder);
78	drm_modeset_unlock_all(display->drm);
79
80	for_each_intel_encoder(display->drm, encoder)
81		if (encoder->shutdown_complete)
82			encoder->shutdown_complete(encoder);
83}