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#include "intel_hotplug.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(dwork: &encoder->link_check_work);
31}
32
33void intel_encoder_link_check_queue_work(struct intel_encoder *encoder, int delay_ms)
34{
35 struct intel_display *display = to_intel_display(encoder);
36
37 mod_delayed_work(wq: display->wq.unordered,
38 dwork: &encoder->link_check_work, delay: msecs_to_jiffies(m: delay_ms));
39}
40
41void intel_encoder_unblock_all_hpds(struct intel_display *display)
42{
43 struct intel_encoder *encoder;
44
45 if (!HAS_DISPLAY(display))
46 return;
47
48 for_each_intel_encoder(display->drm, encoder)
49 intel_hpd_unblock(encoder);
50}
51
52void intel_encoder_block_all_hpds(struct intel_display *display)
53{
54 struct intel_encoder *encoder;
55
56 if (!HAS_DISPLAY(display))
57 return;
58
59 for_each_intel_encoder(display->drm, encoder)
60 intel_hpd_block(encoder);
61}
62
63void intel_encoder_suspend_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(dev: display->drm);
75 for_each_intel_encoder(display->drm, encoder)
76 if (encoder->suspend)
77 encoder->suspend(encoder);
78 drm_modeset_unlock_all(dev: display->drm);
79
80 for_each_intel_encoder(display->drm, encoder)
81 if (encoder->suspend_complete)
82 encoder->suspend_complete(encoder);
83}
84
85void intel_encoder_shutdown_all(struct intel_display *display)
86{
87 struct intel_encoder *encoder;
88
89 if (!HAS_DISPLAY(display))
90 return;
91
92 /*
93 * TODO: check and remove holding the modeset locks if none of
94 * the encoders depends on this.
95 */
96 drm_modeset_lock_all(dev: display->drm);
97 for_each_intel_encoder(display->drm, encoder)
98 if (encoder->shutdown)
99 encoder->shutdown(encoder);
100 drm_modeset_unlock_all(dev: display->drm);
101
102 for_each_intel_encoder(display->drm, encoder)
103 if (encoder->shutdown_complete)
104 encoder->shutdown_complete(encoder);
105}
106
107struct intel_digital_port *intel_dig_port_alloc(void)
108{
109 struct intel_digital_port *dig_port;
110
111 dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL);
112 if (!dig_port)
113 return NULL;
114
115 dig_port->hdmi.hdmi_reg = INVALID_MMIO_REG;
116 dig_port->dp.output_reg = INVALID_MMIO_REG;
117 dig_port->aux_ch = AUX_CH_NONE;
118 dig_port->max_lanes = 4;
119
120 mutex_init(&dig_port->hdcp.mutex);
121
122 return dig_port;
123}
124

source code of linux/drivers/gpu/drm/i915/display/intel_encoder.c