diff options
Diffstat (limited to 'drivers/rtc/rtc-ds1302.c')
| -rw-r--r-- | drivers/rtc/rtc-ds1302.c | 33 |
1 files changed, 9 insertions, 24 deletions
diff --git a/drivers/rtc/rtc-ds1302.c b/drivers/rtc/rtc-ds1302.c index f0d63892264..07e8d79b4a0 100644 --- a/drivers/rtc/rtc-ds1302.c +++ b/drivers/rtc/rtc-ds1302.c @@ -23,8 +23,12 @@ #define RTC_CMD_READ 0x81 /* Read command */ #define RTC_CMD_WRITE 0x80 /* Write command */ +#define RTC_CMD_WRITE_ENABLE 0x00 /* Write enable */ +#define RTC_CMD_WRITE_DISABLE 0x80 /* Write disable */ + #define RTC_ADDR_RAM0 0x20 /* Address of RAM0 */ #define RTC_ADDR_TCR 0x08 /* Address of trickle charge register */ +#define RTC_ADDR_CTRL 0x07 /* Address of control register */ #define RTC_ADDR_YEAR 0x06 /* Address of year register */ #define RTC_ADDR_DAY 0x05 /* Address of day of week register */ #define RTC_ADDR_MON 0x04 /* Address of month register */ @@ -161,6 +165,7 @@ static int ds1302_rtc_read_time(struct device *dev, struct rtc_time *tm) static int ds1302_rtc_set_time(struct device *dev, struct rtc_time *tm) { + ds1302_writebyte(RTC_ADDR_CTRL, RTC_CMD_WRITE_ENABLE); /* Stop RTC */ ds1302_writebyte(RTC_ADDR_SEC, ds1302_readbyte(RTC_ADDR_SEC) | 0x80); @@ -175,6 +180,8 @@ static int ds1302_rtc_set_time(struct device *dev, struct rtc_time *tm) /* Start RTC */ ds1302_writebyte(RTC_ADDR_SEC, ds1302_readbyte(RTC_ADDR_SEC) & ~0x80); + ds1302_writebyte(RTC_ADDR_CTRL, RTC_CMD_WRITE_DISABLE); + return 0; } @@ -224,7 +231,7 @@ static int __init ds1302_rtc_probe(struct platform_device *pdev) return -ENODEV; } - rtc = rtc_device_register("ds1302", &pdev->dev, + rtc = devm_rtc_device_register(&pdev->dev, "ds1302", &ds1302_rtc_ops, THIS_MODULE); if (IS_ERR(rtc)) return PTR_ERR(rtc); @@ -234,36 +241,14 @@ static int __init ds1302_rtc_probe(struct platform_device *pdev) return 0; } -static int __devexit ds1302_rtc_remove(struct platform_device *pdev) -{ - struct rtc_device *rtc = platform_get_drvdata(pdev); - - rtc_device_unregister(rtc); - platform_set_drvdata(pdev, NULL); - - return 0; -} - static struct platform_driver ds1302_platform_driver = { .driver = { .name = DRV_NAME, .owner = THIS_MODULE, }, - .remove = __devexit_p(ds1302_rtc_remove), }; -static int __init ds1302_rtc_init(void) -{ - return platform_driver_probe(&ds1302_platform_driver, ds1302_rtc_probe); -} - -static void __exit ds1302_rtc_exit(void) -{ - platform_driver_unregister(&ds1302_platform_driver); -} - -module_init(ds1302_rtc_init); -module_exit(ds1302_rtc_exit); +module_platform_driver_probe(ds1302_platform_driver, ds1302_rtc_probe); MODULE_DESCRIPTION("Dallas DS1302 RTC driver"); MODULE_VERSION(DRV_VERSION); |