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/***************************************************************************
* __________ __ ___.
* 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;
}
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