#define JZ_REG_RTC_CTRL 0x00
#define JZ_REG_RTC_SEC 0x04
#define JZ_REG_RTC_SEC_ALARM 0x08
-#define JZ_REG_REGULATOR 0x0C
+#define JZ_REG_RTC_REGULATOR 0x0C
+#define JZ_REG_RTC_SCRATCHPAD 0x34
#define JZ_RTC_CTRL_WRDY BIT(7)
#define JZ_RTC_CTRL_1HZ BIT(6)
{
int ret;
struct jz4740_rtc *rtc;
+ uint32_t scratchpad;
rtc = kmalloc(sizeof(*rtc), GFP_KERNEL);
}
ret = request_irq(rtc->irq, jz4740_rtc_irq, 0,
- pdev->name, rtc);
+ pdev->name, rtc);
if (ret) {
dev_err(&pdev->dev, "Failed to request rtc irq: %d\n", ret);
goto err_unregister_rtc;
}
- printk("rtc-ctrl: %d\n", jz4740_rtc_reg_read(rtc, JZ_REG_RTC_CTRL));
+
+ scratchpad = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_SCRATCHPAD);
+ if (scratchpad != 0x12345678) {
+ jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SCRATCHPAD, 0x12345678);
+ jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SEC, 0);
+ }
return 0;
{
struct jz4740_rtc *rtc = platform_get_drvdata(pdev);
+ free_irq(rtc->irq, rtc);
+
rtc_device_unregister(rtc->rtc);
iounmap(rtc->base);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("RTC driver for the JZ4720/JZ4740 SoC\n");
MODULE_ALIAS("platform:jz4740-rtc");
-MODULE_ALIAS("platform:jz4720-rtc");