/* rtc init check */
int rtc_init(u8 recover)
{
int ret;
rtc_info("recovery: %d\n", recover);
/* write powerkeys to enable rtc functions */
if (!rtc_powerkey_init()) {
ret = -RTC_STATUS_POWERKEY_INIT_FAIL;
goto err;
}
/* write interface unlock need to be set after powerkey match */
if (!rtc_writeif_unlock()) {
ret = -RTC_STATUS_WRITEIF_UNLOCK_FAIL;
goto err;
}
/* using dcxo 32K clock */
if (!rtc_enable_dcxo()) {
ret = -RTC_STATUS_OSC_SETTING_FAIL;
goto err;
}
if (recover)
mdelay(20);
if (!rtc_gpio_init()) {
ret = -RTC_STATUS_GPIO_INIT_FAIL;
goto err;
}
if (!rtc_hw_init()) {
ret = -RTC_STATUS_HW_INIT_FAIL;
goto err;
}
if (!rtc_reg_init()) {
ret = -RTC_STATUS_REG_INIT_FAIL;
goto err;
}
if (!rtc_lpd_init()) {
ret = -RTC_STATUS_LPD_INIT_FAIL;
goto err;
}
/* After lpd init, powerkeys need to be written again to enable
* low power detect function.
*/
if (!rtc_powerkey_init()) {
ret = -RTC_STATUS_POWERKEY_INIT_FAIL;
goto err;
}
return RTC_STATUS_OK;
err:
rtc_info("init fail: ret=%d\n", ret);
return ret;
}
static int __devinit sunxi_rtc_probe(struct platform_device *pdev)
{
struct rtc_device *rtc;
int ret;
rtc_reg_list = (rtc_alarm_reg *)(SW_VA_TIMERC_IO_BASE + LOSC_CTRL_REG_OFF);
/* init rtc hardware */
ret = rtc_hw_init();
if(ret) {
pr_err("%s(%d) err: rtc_probe_init failed\n", __func__, __LINE__);
return ret;
}
device_init_wakeup(&pdev->dev, 1);
/* register rtc device */
rtc = rtc_device_register("rtc", &pdev->dev, &sunxi_rtcops, THIS_MODULE);
if(IS_ERR(rtc)) {
dev_err(&pdev->dev, "err: cannot attach rtc\n");
ret = PTR_ERR(rtc);
return ret;
}
#ifdef A20_ALARM
/* register alarm irq */
ret = request_irq(sunxi_rtc_alarmno, sunxi_rtc_alarmirq,
IRQF_DISABLED, "sunxi-rtc alarm", rtc);
if(ret) {
dev_err(&pdev->dev, "IRQ%d error %d\n", sunxi_rtc_alarmno, ret);
rtc_device_unregister(rtc);
return ret;
}
#endif
platform_set_drvdata(pdev, rtc);
return 0;
}
