1 /*
2 * Copyright (C) 2018 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
17 #define LOG_NIDEBUG 0
18 #define LOG_TAG "android.hardware.power@1.3-service.pixel-libperfmgr"
19
20 #include <dlfcn.h>
21 #include <errno.h>
22 #include <fcntl.h>
23 #include <inttypes.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <sys/stat.h>
27 #include <sys/types.h>
28 #include <unistd.h>
29
30 #include <cutils/sockets.h>
31 #include <log/log.h>
32
33 #include "display-helper.h"
34
35 #define DAEMON_SOCKET "pps"
36
37 static int daemon_socket = -1;
38
connectPPDaemon()39 static int connectPPDaemon() {
40 // Setup socket connection, if not already done.
41 if (daemon_socket < 0)
42 daemon_socket =
43 socket_local_client(DAEMON_SOCKET, ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM);
44
45 if (daemon_socket < 0) {
46 ALOGE("Connecting to socket failed: %s", strerror(errno));
47 return -1;
48 }
49 return 0;
50 }
51
ppdComm(const char * cmd)52 static int ppdComm(const char *cmd) {
53 int ret = -1;
54
55 ret = connectPPDaemon();
56 if (ret < 0)
57 return ret;
58
59 ret = write(daemon_socket, cmd, strlen(cmd));
60 if (ret < 0) {
61 ALOGE("Failed to send data over socket, %s", strerror(errno));
62 return ret;
63 }
64 return 0;
65 }
66
set_display_lpm(int enable)67 void set_display_lpm(int enable) {
68 ALOGI("set_display_lpm state: %d", enable);
69 if (enable) {
70 ppdComm("foss:on");
71 } else {
72 ppdComm("foss:off");
73 }
74 }
75