xref: /aosp_15_r20/hardware/interfaces/light/2.0/default/Light.cpp (revision 4d7e907c777eeecc4c5bd7cf640a754fac206ff7)
1*4d7e907cSAndroid Build Coastguard Worker /*
2*4d7e907cSAndroid Build Coastguard Worker  * Copyright (C) 2016 The Android Open Source Project
3*4d7e907cSAndroid Build Coastguard Worker  *
4*4d7e907cSAndroid Build Coastguard Worker  * Licensed under the Apache License, Version 2.0 (the "License");
5*4d7e907cSAndroid Build Coastguard Worker  * you may not use this file except in compliance with the License.
6*4d7e907cSAndroid Build Coastguard Worker  * You may obtain a copy of the License at
7*4d7e907cSAndroid Build Coastguard Worker  *
8*4d7e907cSAndroid Build Coastguard Worker  *      http://www.apache.org/licenses/LICENSE-2.0
9*4d7e907cSAndroid Build Coastguard Worker  *
10*4d7e907cSAndroid Build Coastguard Worker  * Unless required by applicable law or agreed to in writing, software
11*4d7e907cSAndroid Build Coastguard Worker  * distributed under the License is distributed on an "AS IS" BASIS,
12*4d7e907cSAndroid Build Coastguard Worker  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13*4d7e907cSAndroid Build Coastguard Worker  * See the License for the specific language governing permissions and
14*4d7e907cSAndroid Build Coastguard Worker  * limitations under the License.
15*4d7e907cSAndroid Build Coastguard Worker  */
16*4d7e907cSAndroid Build Coastguard Worker 
17*4d7e907cSAndroid Build Coastguard Worker #define LOG_TAG "light"
18*4d7e907cSAndroid Build Coastguard Worker 
19*4d7e907cSAndroid Build Coastguard Worker #include <log/log.h>
20*4d7e907cSAndroid Build Coastguard Worker 
21*4d7e907cSAndroid Build Coastguard Worker #include <stdio.h>
22*4d7e907cSAndroid Build Coastguard Worker 
23*4d7e907cSAndroid Build Coastguard Worker #include "Light.h"
24*4d7e907cSAndroid Build Coastguard Worker 
25*4d7e907cSAndroid Build Coastguard Worker namespace android {
26*4d7e907cSAndroid Build Coastguard Worker namespace hardware {
27*4d7e907cSAndroid Build Coastguard Worker namespace light {
28*4d7e907cSAndroid Build Coastguard Worker namespace V2_0 {
29*4d7e907cSAndroid Build Coastguard Worker namespace implementation {
30*4d7e907cSAndroid Build Coastguard Worker 
31*4d7e907cSAndroid Build Coastguard Worker static_assert(LIGHT_FLASH_NONE == static_cast<int>(Flash::NONE),
32*4d7e907cSAndroid Build Coastguard Worker     "Flash::NONE must match legacy value.");
33*4d7e907cSAndroid Build Coastguard Worker static_assert(LIGHT_FLASH_TIMED == static_cast<int>(Flash::TIMED),
34*4d7e907cSAndroid Build Coastguard Worker     "Flash::TIMED must match legacy value.");
35*4d7e907cSAndroid Build Coastguard Worker static_assert(LIGHT_FLASH_HARDWARE == static_cast<int>(Flash::HARDWARE),
36*4d7e907cSAndroid Build Coastguard Worker     "Flash::HARDWARE must match legacy value.");
37*4d7e907cSAndroid Build Coastguard Worker 
38*4d7e907cSAndroid Build Coastguard Worker static_assert(BRIGHTNESS_MODE_USER == static_cast<int>(Brightness::USER),
39*4d7e907cSAndroid Build Coastguard Worker     "Brightness::USER must match legacy value.");
40*4d7e907cSAndroid Build Coastguard Worker static_assert(BRIGHTNESS_MODE_SENSOR == static_cast<int>(Brightness::SENSOR),
41*4d7e907cSAndroid Build Coastguard Worker     "Brightness::SENSOR must match legacy value.");
42*4d7e907cSAndroid Build Coastguard Worker static_assert(BRIGHTNESS_MODE_LOW_PERSISTENCE ==
43*4d7e907cSAndroid Build Coastguard Worker     static_cast<int>(Brightness::LOW_PERSISTENCE),
44*4d7e907cSAndroid Build Coastguard Worker     "Brightness::LOW_PERSISTENCE must match legacy value.");
45*4d7e907cSAndroid Build Coastguard Worker 
Light(std::map<Type,light_device_t * > && lights)46*4d7e907cSAndroid Build Coastguard Worker Light::Light(std::map<Type, light_device_t*> &&lights)
47*4d7e907cSAndroid Build Coastguard Worker   : mLights(std::move(lights)) {}
48*4d7e907cSAndroid Build Coastguard Worker 
49*4d7e907cSAndroid Build Coastguard Worker // Methods from ::android::hardware::light::V2_0::ILight follow.
setLight(Type type,const LightState & state)50*4d7e907cSAndroid Build Coastguard Worker Return<Status> Light::setLight(Type type, const LightState& state)  {
51*4d7e907cSAndroid Build Coastguard Worker     auto it = mLights.find(type);
52*4d7e907cSAndroid Build Coastguard Worker 
53*4d7e907cSAndroid Build Coastguard Worker     if (it == mLights.end()) {
54*4d7e907cSAndroid Build Coastguard Worker         return Status::LIGHT_NOT_SUPPORTED;
55*4d7e907cSAndroid Build Coastguard Worker     }
56*4d7e907cSAndroid Build Coastguard Worker 
57*4d7e907cSAndroid Build Coastguard Worker     light_device_t* hwLight = it->second;
58*4d7e907cSAndroid Build Coastguard Worker 
59*4d7e907cSAndroid Build Coastguard Worker     light_state_t legacyState {
60*4d7e907cSAndroid Build Coastguard Worker         .color = state.color,
61*4d7e907cSAndroid Build Coastguard Worker         .flashMode = static_cast<int>(state.flashMode),
62*4d7e907cSAndroid Build Coastguard Worker         .flashOnMS = state.flashOnMs,
63*4d7e907cSAndroid Build Coastguard Worker         .flashOffMS = state.flashOffMs,
64*4d7e907cSAndroid Build Coastguard Worker         .brightnessMode = static_cast<int>(state.brightnessMode),
65*4d7e907cSAndroid Build Coastguard Worker     };
66*4d7e907cSAndroid Build Coastguard Worker 
67*4d7e907cSAndroid Build Coastguard Worker     int ret = hwLight->set_light(hwLight, &legacyState);
68*4d7e907cSAndroid Build Coastguard Worker 
69*4d7e907cSAndroid Build Coastguard Worker     switch (ret) {
70*4d7e907cSAndroid Build Coastguard Worker         case -ENOSYS:
71*4d7e907cSAndroid Build Coastguard Worker             return Status::BRIGHTNESS_NOT_SUPPORTED;
72*4d7e907cSAndroid Build Coastguard Worker         case 0:
73*4d7e907cSAndroid Build Coastguard Worker             return Status::SUCCESS;
74*4d7e907cSAndroid Build Coastguard Worker         default:
75*4d7e907cSAndroid Build Coastguard Worker             return Status::UNKNOWN;
76*4d7e907cSAndroid Build Coastguard Worker     }
77*4d7e907cSAndroid Build Coastguard Worker }
78*4d7e907cSAndroid Build Coastguard Worker 
getSupportedTypes(getSupportedTypes_cb _hidl_cb)79*4d7e907cSAndroid Build Coastguard Worker Return<void> Light::getSupportedTypes(getSupportedTypes_cb _hidl_cb)  {
80*4d7e907cSAndroid Build Coastguard Worker     Type *types = new Type[mLights.size()];
81*4d7e907cSAndroid Build Coastguard Worker 
82*4d7e907cSAndroid Build Coastguard Worker     int idx = 0;
83*4d7e907cSAndroid Build Coastguard Worker     for(auto const &pair : mLights) {
84*4d7e907cSAndroid Build Coastguard Worker         Type type = pair.first;
85*4d7e907cSAndroid Build Coastguard Worker 
86*4d7e907cSAndroid Build Coastguard Worker         types[idx++] = type;
87*4d7e907cSAndroid Build Coastguard Worker     }
88*4d7e907cSAndroid Build Coastguard Worker 
89*4d7e907cSAndroid Build Coastguard Worker     {
90*4d7e907cSAndroid Build Coastguard Worker         hidl_vec<Type> hidl_types{};
91*4d7e907cSAndroid Build Coastguard Worker         hidl_types.setToExternal(types, mLights.size());
92*4d7e907cSAndroid Build Coastguard Worker 
93*4d7e907cSAndroid Build Coastguard Worker         _hidl_cb(hidl_types);
94*4d7e907cSAndroid Build Coastguard Worker     }
95*4d7e907cSAndroid Build Coastguard Worker 
96*4d7e907cSAndroid Build Coastguard Worker     delete[] types;
97*4d7e907cSAndroid Build Coastguard Worker 
98*4d7e907cSAndroid Build Coastguard Worker     return Void();
99*4d7e907cSAndroid Build Coastguard Worker }
100*4d7e907cSAndroid Build Coastguard Worker 
101*4d7e907cSAndroid Build Coastguard Worker const static std::map<Type, const char*> kLogicalLights = {
102*4d7e907cSAndroid Build Coastguard Worker     {Type::BACKLIGHT,     LIGHT_ID_BACKLIGHT},
103*4d7e907cSAndroid Build Coastguard Worker     {Type::KEYBOARD,      LIGHT_ID_KEYBOARD},
104*4d7e907cSAndroid Build Coastguard Worker     {Type::BUTTONS,       LIGHT_ID_BUTTONS},
105*4d7e907cSAndroid Build Coastguard Worker     {Type::BATTERY,       LIGHT_ID_BATTERY},
106*4d7e907cSAndroid Build Coastguard Worker     {Type::NOTIFICATIONS, LIGHT_ID_NOTIFICATIONS},
107*4d7e907cSAndroid Build Coastguard Worker     {Type::ATTENTION,     LIGHT_ID_ATTENTION},
108*4d7e907cSAndroid Build Coastguard Worker     {Type::BLUETOOTH,     LIGHT_ID_BLUETOOTH},
109*4d7e907cSAndroid Build Coastguard Worker     {Type::WIFI,          LIGHT_ID_WIFI}
110*4d7e907cSAndroid Build Coastguard Worker };
111*4d7e907cSAndroid Build Coastguard Worker 
debug(const hidl_handle & handle,const hidl_vec<hidl_string> &)112*4d7e907cSAndroid Build Coastguard Worker Return<void> Light::debug(const hidl_handle& handle, const hidl_vec<hidl_string>& /* options */) {
113*4d7e907cSAndroid Build Coastguard Worker     if (handle == nullptr || handle->numFds < 1) {
114*4d7e907cSAndroid Build Coastguard Worker         ALOGE("debug called with no handle\n");
115*4d7e907cSAndroid Build Coastguard Worker         return Void();
116*4d7e907cSAndroid Build Coastguard Worker     }
117*4d7e907cSAndroid Build Coastguard Worker 
118*4d7e907cSAndroid Build Coastguard Worker     int fd = handle->data[0];
119*4d7e907cSAndroid Build Coastguard Worker     if (fd < 0) {
120*4d7e907cSAndroid Build Coastguard Worker         ALOGE("invalid FD: %d\n", handle->data[0]);
121*4d7e907cSAndroid Build Coastguard Worker         return Void();
122*4d7e907cSAndroid Build Coastguard Worker     }
123*4d7e907cSAndroid Build Coastguard Worker 
124*4d7e907cSAndroid Build Coastguard Worker     dprintf(fd, "The following lights are registered: ");
125*4d7e907cSAndroid Build Coastguard Worker     for (auto const& pair : mLights) {
126*4d7e907cSAndroid Build Coastguard Worker         const Type type = pair.first;
127*4d7e907cSAndroid Build Coastguard Worker         dprintf(fd, "%s,", kLogicalLights.at(type));
128*4d7e907cSAndroid Build Coastguard Worker     }
129*4d7e907cSAndroid Build Coastguard Worker     dprintf(fd, ".\n");
130*4d7e907cSAndroid Build Coastguard Worker     fsync(fd);
131*4d7e907cSAndroid Build Coastguard Worker     return Void();
132*4d7e907cSAndroid Build Coastguard Worker }
133*4d7e907cSAndroid Build Coastguard Worker 
getLightDevice(const char * name)134*4d7e907cSAndroid Build Coastguard Worker light_device_t* getLightDevice(const char* name) {
135*4d7e907cSAndroid Build Coastguard Worker     light_device_t* lightDevice;
136*4d7e907cSAndroid Build Coastguard Worker     const hw_module_t* hwModule = NULL;
137*4d7e907cSAndroid Build Coastguard Worker 
138*4d7e907cSAndroid Build Coastguard Worker     int ret = hw_get_module (LIGHTS_HARDWARE_MODULE_ID, &hwModule);
139*4d7e907cSAndroid Build Coastguard Worker     if (ret == 0) {
140*4d7e907cSAndroid Build Coastguard Worker         ret = hwModule->methods->open(hwModule, name,
141*4d7e907cSAndroid Build Coastguard Worker             reinterpret_cast<hw_device_t**>(&lightDevice));
142*4d7e907cSAndroid Build Coastguard Worker         if (ret != 0) {
143*4d7e907cSAndroid Build Coastguard Worker             ALOGI("light_open %s %s failed: %d", LIGHTS_HARDWARE_MODULE_ID, name, ret);
144*4d7e907cSAndroid Build Coastguard Worker         }
145*4d7e907cSAndroid Build Coastguard Worker     } else {
146*4d7e907cSAndroid Build Coastguard Worker         ALOGE("hw_get_module %s %s failed: %d", LIGHTS_HARDWARE_MODULE_ID, name, ret);
147*4d7e907cSAndroid Build Coastguard Worker     }
148*4d7e907cSAndroid Build Coastguard Worker 
149*4d7e907cSAndroid Build Coastguard Worker     if (ret == 0) {
150*4d7e907cSAndroid Build Coastguard Worker         return lightDevice;
151*4d7e907cSAndroid Build Coastguard Worker     } else {
152*4d7e907cSAndroid Build Coastguard Worker         ALOGE("Light passthrough failed to load legacy HAL.");
153*4d7e907cSAndroid Build Coastguard Worker         return nullptr;
154*4d7e907cSAndroid Build Coastguard Worker     }
155*4d7e907cSAndroid Build Coastguard Worker }
156*4d7e907cSAndroid Build Coastguard Worker 
HIDL_FETCH_ILight(const char *)157*4d7e907cSAndroid Build Coastguard Worker ILight* HIDL_FETCH_ILight(const char* /* name */) {
158*4d7e907cSAndroid Build Coastguard Worker     std::map<Type, light_device_t*> lights;
159*4d7e907cSAndroid Build Coastguard Worker 
160*4d7e907cSAndroid Build Coastguard Worker     for(auto const &pair : kLogicalLights) {
161*4d7e907cSAndroid Build Coastguard Worker         Type type = pair.first;
162*4d7e907cSAndroid Build Coastguard Worker         const char* name = pair.second;
163*4d7e907cSAndroid Build Coastguard Worker 
164*4d7e907cSAndroid Build Coastguard Worker         light_device_t* light = getLightDevice(name);
165*4d7e907cSAndroid Build Coastguard Worker 
166*4d7e907cSAndroid Build Coastguard Worker         if (light != nullptr) {
167*4d7e907cSAndroid Build Coastguard Worker             lights[type] = light;
168*4d7e907cSAndroid Build Coastguard Worker         }
169*4d7e907cSAndroid Build Coastguard Worker     }
170*4d7e907cSAndroid Build Coastguard Worker 
171*4d7e907cSAndroid Build Coastguard Worker     if (lights.size() == 0) {
172*4d7e907cSAndroid Build Coastguard Worker         // Log information, but still return new Light.
173*4d7e907cSAndroid Build Coastguard Worker         // Some devices may not have any lights.
174*4d7e907cSAndroid Build Coastguard Worker         ALOGI("Could not open any lights.");
175*4d7e907cSAndroid Build Coastguard Worker     }
176*4d7e907cSAndroid Build Coastguard Worker 
177*4d7e907cSAndroid Build Coastguard Worker     return new Light(std::move(lights));
178*4d7e907cSAndroid Build Coastguard Worker }
179*4d7e907cSAndroid Build Coastguard Worker 
180*4d7e907cSAndroid Build Coastguard Worker } // namespace implementation
181*4d7e907cSAndroid Build Coastguard Worker }  // namespace V2_0
182*4d7e907cSAndroid Build Coastguard Worker }  // namespace light
183*4d7e907cSAndroid Build Coastguard Worker }  // namespace hardware
184*4d7e907cSAndroid Build Coastguard Worker }  // namespace android
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