1 /*
2 * Copyright (c) 2016-2017, 2019-2020 The Linux Foundation. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above
10 * copyright notice, this list of conditions and the following
11 * disclaimer in the documentation and/or other materials provided
12 * with the distribution.
13 * * Neither the name of The Linux Foundation. nor the names of its
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29 #include <utils/constants.h>
30 #include <utils/debug.h>
31 #include <utils/locker.h>
32 #include "hwc_callbacks.h"
33
34 #define __CLASS__ "HWCCallbacks"
35
36 namespace sdm {
37
Hotplug(hwc2_display_t display,HWC2::Connection state)38 HWC2::Error HWCCallbacks::Hotplug(hwc2_display_t display, HWC2::Connection state) {
39 SCOPE_LOCK(hotplug_lock_);
40 DTRACE_SCOPED();
41
42 // If client has not registered hotplug, wait for it finitely:
43 // 1. spurious wake up (!hotplug_), wait again
44 // 2. error = ETIMEDOUT, return with warning 1
45 // 3. error != ETIMEDOUT, return with warning 2
46 // 4. error == NONE and no spurious wake up, then !hotplug_ is false, exit loop
47 while (!hotplug_) {
48 DLOGW("Attempting to send client a hotplug too early Display = %" PRIu64 " state = %d", display,
49 state);
50 int ret = hotplug_lock_.WaitFinite(5000);
51 if (ret == ETIMEDOUT) {
52 DLOGW("Client didn't connect on time, dropping hotplug!");
53 return HWC2::Error::None;
54 } else if (ret != 0) {
55 DLOGW("Failed client connection wait. Error %s, dropping hotplug!", strerror(ret));
56 return HWC2::Error::None;
57 }
58 }
59 hotplug_(hotplug_data_, display, INT32(state));
60 return HWC2::Error::None;
61 }
62
Refresh(hwc2_display_t display)63 HWC2::Error HWCCallbacks::Refresh(hwc2_display_t display) {
64 SCOPE_LOCK(refresh_lock_);
65 // Do not lock, will cause hotplug deadlock
66 DTRACE_SCOPED();
67 // If client has not registered refresh, drop it
68 if (!refresh_) {
69 return HWC2::Error::NoResources;
70 }
71 refresh_(refresh_data_, display);
72 pending_refresh_.set(UINT32(display));
73 return HWC2::Error::None;
74 }
75
Vsync(hwc2_display_t display,int64_t timestamp)76 HWC2::Error HWCCallbacks::Vsync(hwc2_display_t display, int64_t timestamp) {
77 SCOPE_LOCK(vsync_lock_);
78 // Do not lock, may cause hotplug deadlock
79 DTRACE_SCOPED();
80 // If client has not registered vsync, drop it
81 if (!vsync_) {
82 return HWC2::Error::NoResources;
83 }
84 vsync_(vsync_data_, display, timestamp);
85 return HWC2::Error::None;
86 }
87
Vsync_2_4(hwc2_display_t display,int64_t timestamp,uint32_t period)88 HWC2::Error HWCCallbacks::Vsync_2_4(hwc2_display_t display, int64_t timestamp, uint32_t period) {
89 SCOPE_LOCK(vsync_2_4_lock_);
90 DTRACE_SCOPED();
91 if (!vsync_2_4_) {
92 return HWC2::Error::NoResources;
93 }
94
95 vsync_2_4_(vsync_2_4_data_, display, timestamp, period);
96 return HWC2::Error::None;
97 }
98
VsyncPeriodTimingChanged(hwc2_display_t display,hwc_vsync_period_change_timeline_t * updated_timeline)99 HWC2::Error HWCCallbacks::VsyncPeriodTimingChanged(
100 hwc2_display_t display, hwc_vsync_period_change_timeline_t *updated_timeline) {
101 SCOPE_LOCK(vsync_period_timing_changed_lock_);
102 DTRACE_SCOPED();
103 if (!vsync_period_timing_changed_) {
104 return HWC2::Error::NoResources;
105 }
106
107 vsync_period_timing_changed_(vsync_period_timing_changed_data_, display, updated_timeline);
108 return HWC2::Error::None;
109 }
110
SeamlessPossible(hwc2_display_t display)111 HWC2::Error HWCCallbacks::SeamlessPossible(hwc2_display_t display) {
112 SCOPE_LOCK(seamless_possible_lock_);
113 DTRACE_SCOPED();
114 if (!seamless_possible_) {
115 return HWC2::Error::NoResources;
116 }
117
118 seamless_possible_(seamless_possible_data_, display);
119 return HWC2::Error::None;
120 }
121
Register(HWC2::Callback descriptor,hwc2_callback_data_t callback_data,hwc2_function_pointer_t pointer)122 HWC2::Error HWCCallbacks::Register(HWC2::Callback descriptor, hwc2_callback_data_t callback_data,
123 hwc2_function_pointer_t pointer) {
124 switch (descriptor) {
125 case HWC2::Callback::Hotplug: {
126 SCOPE_LOCK(hotplug_lock_);
127 hotplug_data_ = callback_data;
128 hotplug_ = reinterpret_cast<HWC2_PFN_HOTPLUG>(pointer);
129 client_connected_ = true;
130 hotplug_lock_.Broadcast();
131 } break;
132 case HWC2::Callback::Refresh: {
133 SCOPE_LOCK(refresh_lock_);
134 refresh_data_ = callback_data;
135 refresh_ = reinterpret_cast<HWC2_PFN_REFRESH>(pointer);
136 } break;
137 case HWC2::Callback::Vsync: {
138 SCOPE_LOCK(vsync_lock_);
139 vsync_data_ = callback_data;
140 vsync_ = reinterpret_cast<HWC2_PFN_VSYNC>(pointer);
141 } break;
142 case HWC2::Callback::Vsync_2_4: {
143 SCOPE_LOCK(vsync_2_4_lock_);
144 vsync_2_4_data_ = callback_data;
145 vsync_2_4_ = reinterpret_cast<HWC2_PFN_VSYNC_2_4>(pointer);
146 } break;
147 case HWC2::Callback::VsyncPeriodTimingChanged: {
148 SCOPE_LOCK(vsync_period_timing_changed_lock_);
149 vsync_period_timing_changed_data_ = callback_data;
150 vsync_period_timing_changed_ =
151 reinterpret_cast<HWC2_PFN_VSYNC_PERIOD_TIMING_CHANGED>(pointer);
152 } break;
153 case HWC2::Callback::SeamlessPossible: {
154 SCOPE_LOCK(seamless_possible_lock_);
155 seamless_possible_data_ = callback_data;
156 seamless_possible_ = reinterpret_cast<HWC2_PFN_SEAMLESS_POSSIBLE>(pointer);
157 } break;
158 default:
159 return HWC2::Error::BadParameter;
160 }
161
162 return HWC2::Error::None;
163 }
164
165 } // namespace sdm
166