| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * |
| * Samsung YP-R1 runtime USB cable detection |
| * |
| * Copyright (C) 2013 Lorenzo Miori |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ****************************************************************************/ |
| |
| #include <sys/ioctl.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| |
| #define IOCTL_PMU_MAGIC 'A' |
| |
| #define E_IOCTL_PMU_GET_BATT_LVL 0 |
| #define E_IOCTL_PMU_GET_CHG_STATUS 1 |
| #define E_IOCTL_PMU_IS_EXT_PWR 2 |
| #define E_IOCTL_PMU_STOP_CHG 3 |
| #define E_IOCTL_PMU_START_CHG 4 |
| #define E_IOCTL_PMU_IS_EXT_PWR_OVP 5 |
| #define E_IOCTL_PMU_LCD_DIM_CTRL 6 |
| #define E_IOCTL_PMU_CORE_CTL_HIGH 7 |
| #define E_IOCTL_PMU_CORE_CTL_LOW 8 |
| #define E_IOCTL_PMU_TSP_USB_PWR_OFF 9 |
| |
| #define IOCTL_PMU_GET_BATT_LVL _IO(IOCTL_PMU_MAGIC, E_IOCTL_PMU_GET_BATT_LVL) |
| #define IOCTL_PMU_GET_CHG_STATUS _IO(IOCTL_PMU_MAGIC, E_IOCTL_PMU_GET_CHG_STATUS) |
| #define IOCTL_PMU_IS_EXT_PWR _IO(IOCTL_PMU_MAGIC, E_IOCTL_PMU_IS_EXT_PWR) |
| #define IOCTL_PMU_STOP_CHG _IO(IOCTL_PMU_MAGIC, E_IOCTL_PMU_STOP_CHG) |
| #define IOCTL_PMU_START_CHG _IO(IOCTL_PMU_MAGIC, E_IOCTL_PMU_START_CHG) |
| #define IOCTL_PMU_IS_EXT_PWR_OVP _IO(IOCTL_PMU_MAGIC, E_IOCTL_PMU_IS_EXT_PWR_OVP) |
| #define IOCTL_PMU_LCD_DIM_CTRL _IOW(IOCTL_PMU_MAGIC, E_IOCTL_PMU_LCD_DIM_CTRL, int) |
| #define IOCTL_PMU_CORE_CTL_HIGH _IO(IOCTL_PMU_MAGIC, E_IOCTL_PMU_CORE_CTL_HIGH) |
| #define IOCTL_PMU_CORE_CTL_LOW _IO(IOCTL_PMU_MAGIC, E_IOCTL_PMU_CORE_CTL_LOW) |
| #define IOCTL_PMU_TSP_USB_PWR_OFF _IO(IOCTL_PMU_MAGIC, E_IOCTL_PMU_TSP_USB_PWR_OFF) |
| |
| /* |
| * This is a very simple program that runs on device. |
| * It returns error code either 0 when (power/usb) cable |
| * is not connected or >= 1 if connected. |
| */ |
| int main(void) |
| { |
| int state = -1; |
| int dev = open("/dev/r1Pmu", O_RDONLY); |
| state = ioctl(dev, IOCTL_PMU_IS_EXT_PWR); |
| close(dev); |
| return state; |
| } |