ss_usb_handler.c

   1 /*
   2  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
   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
  18 #include <pmapi.h>
  19 #include <vconf.h>
  20 #include <sysman.h>
  21
  22 #include "ss_log.h"
  23 #include "device-node.h"
  24 #include "ss_launch.h"
  25 #include "include/ss_data.h"
  26
  27 #define USBCON_EXEC_PATH        PREFIX"/bin/usb-server"
  28 #define RETRY                   3
  29
  30 int ss_usb_init()
  31 {
  32         int val = -1, i = 0, pid;
  33
  34         PRT_TRACE("check usb connection");
  35         if (device_get_property(DEVICE_TYPE_EXTCON, PROP_EXTCON_USB_ONLINE, &val) == 0) {
  36                 if (val==1) {
  37                         vconf_set_int(VCONFKEY_SYSMAN_USB_STATUS,
  38                                         VCONFKEY_SYSMAN_USB_AVAILABLE);
  39                         while (i < RETRY
  40                                         && pm_lock_state(LCD_OFF, STAY_CUR_STATE, 0) == -1) {
  41                                 i++;
  42                                 sleep(1);
  43                         }
  44                         pid = ss_launch_if_noexist(USBCON_EXEC_PATH, NULL);
  45                         if (pid < 0) {
  46                                 PRT_TRACE_ERR("usb appl launching failed\n");
  47                                 return -1;
  48                         }
  49                 }
  50                 else if (val==0)
  51                         vconf_set_int(VCONFKEY_SYSMAN_USB_STATUS,VCONFKEY_SYSMAN_USB_DISCONNECTED);
  52         }
  53
  54         return 0;
  55 }