power.c revision c0973cab514ca6476d01186d09076d3490c0d4cb 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16#include <errno.h>
17#include <string.h>
18#include <sys/types.h>
19#include <sys/stat.h>
20#include <sys/socket.h>
21#include <sys/un.h>
22#include <fcntl.h>
23#include <dlfcn.h>
24
25#define LOG_TAG "PowerHAL"
26#include <utils/Log.h>
27
28#include <hardware/hardware.h>
29#include <hardware/power.h>
30#define TOUCHBOOST_SOCKET       "/dev/socket/mpdecision/touchboost"
31
32static int client_sockfd;
33static struct sockaddr_un client_addr;
34
35static void power_init(struct power_module *module)
36{
37    ALOGI("%s", __func__);
38    client_sockfd = socket(PF_UNIX, SOCK_DGRAM, 0);
39    if (client_sockfd < 0) {
40        ALOGE("%s: failed to open: %s", __func__, strerror(errno));
41        return;
42    }
43    memset(&client_addr, 0, sizeof(struct sockaddr_un));
44    client_addr.sun_family = AF_UNIX;
45    snprintf(client_addr.sun_path, UNIX_PATH_MAX, TOUCHBOOST_SOCKET);
46}
47
48static void touch_boost()
49{
50    int rc;
51
52    if (client_sockfd < 0) {
53        ALOGE("%s: touchboost socket not created", __func__);
54        return;
55    }
56
57    rc = sendto(client_sockfd, "1", 1, 0, (const struct sockaddr *)&client_addr, sizeof(struct sockaddr_un));
58    if (rc < 0) {
59        ALOGE("%s: failed to send: %s", __func__, strerror(errno));
60    }
61}
62
63static void power_set_interactive(struct power_module *module, int on)
64{
65    ALOGV("%s %s", __func__, (on ? "ON" : "OFF"));
66    if (on)
67        touch_boost();
68}
69
70static void power_hint(struct power_module *module, power_hint_t hint,
71                       void *data) {
72    switch (hint) {
73        case POWER_HINT_INTERACTION:
74            ALOGV("POWER_HINT_INTERACTION");
75            touch_boost();
76            break;
77#if 0
78        case POWER_HINT_VSYNC:
79            ALOGV("POWER_HINT_VSYNC %s", (data ? "ON" : "OFF"));
80            break;
81#endif
82        default:
83             break;
84    }
85}
86
87static struct hw_module_methods_t power_module_methods = {
88    .open = NULL,
89};
90
91struct power_module HAL_MODULE_INFO_SYM = {
92    .common = {
93        .tag = HARDWARE_MODULE_TAG,
94        .module_api_version = POWER_MODULE_API_VERSION_0_2,
95        .hal_api_version = HARDWARE_HAL_API_VERSION,
96        .id = POWER_HARDWARE_MODULE_ID,
97        .name = "Qualcomm Power HAL",
98        .author = "The Android Open Source Project",
99        .methods = &power_module_methods,
100    },
101
102    .init = power_init,
103    .setInteractive = power_set_interactive,
104    .powerHint = power_hint,
105};
106