| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "CHARGER_TOUCH" |
| #include <hardware_legacy/uevent.h> |
| #include <utils/Log.h> |
| #include <fcntl.h> |
| |
| #define POWER_SUPPLY_PATH "/sys/class/power_supply" |
| #define TOUCH_PATH "/sys/devices/virtual/input/lge_touch/charger" |
| |
| const char* WIRELESS = "change@/devices/platform/bq51051b_wlc/power_supply/wireless"; |
| const char* USB = "change@/devices/platform/msm_ssbi.0/pm8921-core/pm8921-charger/power_supply/usb"; |
| |
| enum { |
| NO_CHARGER, |
| CHARGER_WIRELESS, |
| CHARGER_USB, |
| CHARGER_AC |
| }; |
| |
| static void read_path(const char* path, char* buf, size_t size) |
| { |
| int fd = open(path, O_RDONLY, 0); |
| int count; |
| |
| if (fd < 0) { |
| ALOGE("Could not open %s", path); |
| return; |
| } |
| count = read(fd, buf, size); |
| |
| close(fd); |
| } |
| |
| static void write_path(int type) |
| { |
| int fd = open(TOUCH_PATH, O_RDWR, 0); |
| char buf[2]; |
| |
| if (fd < 0) { |
| ALOGE("Could not open %s", TOUCH_PATH); |
| return; |
| } |
| |
| snprintf(buf, sizeof(buf), "%d", type); |
| write(fd, buf, 1); |
| |
| close(fd); |
| } |
| |
| static void handle_uevent(const char* udata) |
| { |
| const char *str = udata; |
| char path[PATH_MAX]; |
| char wlc[2], usb[2], ac[2]; |
| int type = NO_CHARGER; |
| |
| memset(wlc, 0, 2); |
| memset(usb, 0, 2); |
| memset(ac, 0, 2); |
| |
| if (!strncmp(str, WIRELESS, strlen(WIRELESS))) { |
| snprintf(path, sizeof(path), "%s/wireless/online", POWER_SUPPLY_PATH); |
| read_path(path, wlc, 1); |
| if (!strncmp(wlc, "1", 1)) |
| type = CHARGER_WIRELESS; |
| |
| ALOGE("Type: %d", type); |
| write_path(type); |
| } else if (!strncmp(str, USB, strlen(USB))) { |
| snprintf(path, sizeof(path), "%s/usb/online", POWER_SUPPLY_PATH); |
| read_path(path, usb, 1); |
| |
| snprintf(path, sizeof(path), "%s/pm8921-dc/online", POWER_SUPPLY_PATH); |
| read_path(path, ac, 1); |
| |
| if (!strncmp(usb, "1", 1)) { |
| type = CHARGER_USB; |
| } else if (!strncmp(ac, "1", 1)) { |
| type = CHARGER_AC; |
| } |
| |
| ALOGE("Type: %d", type); |
| write_path(type); |
| } |
| |
| } |
| |
| static void event_loop(void) |
| { |
| int len = 0; |
| static char udata[4096]; |
| memset(udata, 0, sizeof(udata)); |
| |
| uevent_init(); |
| |
| while (1) { |
| len = uevent_next_event(udata, sizeof(udata) - 2); |
| handle_uevent(udata); |
| } |
| } |
| |
| int main() |
| { |
| event_loop(); |
| return 0; |
| } |