3 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #ifndef __PM_X_LCD_ONOFF_C__
20 #define __PM_X_LCD_ONOFF_C__
29 static int pm_x_set_lcd_backlight(struct _PMSys *p, int onoff)
35 LOGINFO("Backlight onoff=%d", onoff);
36 if (onoff == STATUS_ON)
37 snprintf(cmd_line, sizeof(cmd_line), "%s", CMD_ON);
39 snprintf(cmd_line, sizeof(cmd_line), "%s", CMD_OFF);
41 signal(SIGCHLD, SIG_DFL);
45 LOGERR("[1] Failed to fork child process for LCD On/Off");
50 LOGINFO("[1] Child proccess for LCD %s was created (%s)",
51 ((onoff == STATUS_ON) ? "ON" : "OFF"), cmd_line);
52 execl("/usr/bin/xset", "/usr/bin/xset", "dpms", "force",
55 } else if (pid != (ret = waitpid(pid, NULL, 0))) {
57 ("[1] Waiting failed for the child process pid: %d, ret: %d, errno: %d",
61 signal(SIGCHLD, SIG_IGN);
65 #endif /*__PM_X_LCD_ONOFF_C__ */