diff options
Diffstat (limited to 'drivers/rtc')
-rw-r--r-- | drivers/rtc/rtc-uclass.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-uclass.c b/drivers/rtc/rtc-uclass.c index 926cca2..4a0e3c5 100644 --- a/drivers/rtc/rtc-uclass.c +++ b/drivers/rtc/rtc-uclass.c @@ -40,6 +40,25 @@ int dm_rtc_reset(struct udevice *dev) return ops->reset(dev); } +int dm_rtc_read(struct udevice *dev, unsigned int reg, u8 *buf, unsigned int len) +{ + struct rtc_ops *ops = rtc_get_ops(dev); + + assert(ops); + if (ops->read) + return ops->read(dev, reg, buf, len); + if (!ops->read8) + return -ENOSYS; + while (len--) { + int ret = ops->read8(dev, reg++); + + if (ret < 0) + return ret; + *buf++ = ret; + } + return 0; +} + int rtc_read8(struct udevice *dev, unsigned int reg) { struct rtc_ops *ops = rtc_get_ops(dev); |