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