/*!
* This function sets external RTC
*
* @param second value in second to be set to external RTC
*
* @return 0 if successful; non-zero otherwise
*/
int set_ext_rtc_time(u32 second)
{
int ret = 0;
struct timeval tmp;
if (!pmic_rtc_loaded()) {
return MXC_EXTERNAL_RTC_NONE;
}
tmp.tv_sec = second;
ret = pmic_rtc_set_time(&tmp);
if (0 != ret)
ret = MXC_EXTERNAL_RTC_ERR;
return ret;
}
/*!
* This function implements IOCTL controls on a PMIC RTC device.
*
* @param inode pointer on the node
* @param file pointer on the file
* @param cmd the command
* @param arg the parameter
* @return This function returns 0 if successful.
*/
static int pmic_rtc_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct timeval *pmic_time = NULL;
if (_IOC_TYPE(cmd) != 'p')
return -ENOTTY;
if (arg) {
pmic_time = kmalloc(sizeof(struct timeval), GFP_KERNEL);
if (pmic_time == NULL)
return -ENOMEM;
/* if (copy_from_user(pmic_time, (struct timeval *)arg,
sizeof(struct timeval))) {
return -EFAULT;
} */
}
switch (cmd) {
case PMIC_RTC_SET_TIME:
if (copy_from_user(pmic_time, (struct timeval *)arg,
sizeof(struct timeval))) {
return -EFAULT;
}
pr_debug("SET RTC\n");
CHECK_ERROR(pmic_rtc_set_time(pmic_time));
break;
case PMIC_RTC_GET_TIME:
if (copy_to_user((struct timeval *)arg, pmic_time,
sizeof(struct timeval))) {
return -EFAULT;
}
pr_debug("GET RTC\n");
CHECK_ERROR(pmic_rtc_get_time(pmic_time));
break;
case PMIC_RTC_SET_ALARM:
if (copy_from_user(pmic_time, (struct timeval *)arg,
sizeof(struct timeval))) {
return -EFAULT;
}
pr_debug("SET RTC ALARM\n");
CHECK_ERROR(pmic_rtc_set_time_alarm(pmic_time));
break;
case PMIC_RTC_GET_ALARM:
if (copy_to_user((struct timeval *)arg, pmic_time,
sizeof(struct timeval))) {
return -EFAULT;
}
pr_debug("GET RTC ALARM\n");
CHECK_ERROR(pmic_rtc_get_time_alarm(pmic_time));
break;
case PMIC_RTC_WAIT_ALARM:
printk(KERN_INFO "WAIT ALARM...\n");
CHECK_ERROR(pmic_rtc_event_sub(RTC_IT_ALARM,
callback_test_sub));
CHECK_ERROR(pmic_rtc_wait_alarm());
printk(KERN_INFO "ALARM DONE\n");
CHECK_ERROR(pmic_rtc_event_unsub(RTC_IT_ALARM,
callback_test_sub));
break;
case PMIC_RTC_ALARM_REGISTER:
printk(KERN_INFO "PMIC RTC ALARM REGISTER\n");
alarm_callback.func = callback_alarm_asynchronous;
alarm_callback.param = NULL;
CHECK_ERROR(pmic_event_subscribe(EVENT_TODAI, alarm_callback));
break;
case PMIC_RTC_ALARM_UNREGISTER:
printk(KERN_INFO "PMIC RTC ALARM UNREGISTER\n");
alarm_callback.func = callback_alarm_asynchronous;
alarm_callback.param = NULL;
CHECK_ERROR(pmic_event_unsubscribe
(EVENT_TODAI, alarm_callback));
pmic_rtc_done = false;
break;
default:
pr_debug("%d unsupported ioctl command\n", (int)cmd);
return -EINVAL;
}
if (arg) {
if (copy_to_user((struct timeval *)arg, pmic_time,
sizeof(struct timeval))) {
return -EFAULT;
}
kfree(pmic_time);
}
return 0;
}