diff options
| -rw-r--r-- | drivers/rtc/rtc-uclass.c | 19 | ||||
| -rw-r--r-- | include/rtc.h | 24 |
2 files changed, 43 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-uclass.c b/drivers/rtc/rtc-uclass.c index 4a0e3c5..44da500 100644 --- a/drivers/rtc/rtc-uclass.c +++ b/drivers/rtc/rtc-uclass.c @@ -59,6 +59,25 @@ int dm_rtc_read(struct udevice *dev, unsigned int reg, u8 *buf, unsigned int len return 0; } +int dm_rtc_write(struct udevice *dev, unsigned int reg, + const u8 *buf, unsigned int len) +{ + struct rtc_ops *ops = rtc_get_ops(dev); + + assert(ops); + if (ops->write) + return ops->write(dev, reg, buf, len); + if (!ops->write8) + return -ENOSYS; + while (len--) { + int ret = ops->write8(dev, reg++, *buf++); + + if (ret < 0) + return ret; + } + return 0; +} + int rtc_read8(struct udevice *dev, unsigned int reg) { struct rtc_ops *ops = rtc_get_ops(dev); diff --git a/include/rtc.h b/include/rtc.h index f30e908..1efc0db 100644 --- a/include/rtc.h +++ b/include/rtc.h @@ -68,6 +68,18 @@ struct rtc_ops { u8 *buf, unsigned int len); /** + * write() - Write multiple 8-bit registers + * + * @dev: Device to write to + * @reg: First register to write + * @buf: Input buffer + * @len: Number of registers to write + * @return 0 if OK, -ve on error + */ + int (*write)(struct udevice *dev, unsigned int reg, + const u8 *buf, unsigned int len); + + /** * read8() - Read an 8-bit register * * @dev: Device to read from @@ -133,6 +145,18 @@ int dm_rtc_reset(struct udevice *dev); int dm_rtc_read(struct udevice *dev, unsigned int reg, u8 *buf, unsigned int len); /** + * dm_rtc_write() - Write multiple 8-bit registers + * + * @dev: Device to write to + * @reg: First register to write + * @buf: Input buffer + * @len: Number of registers to write + * @return 0 if OK, -ve on error + */ +int dm_rtc_write(struct udevice *dev, unsigned int reg, + const u8 *buf, unsigned int len); + +/** * rtc_read8() - Read an 8-bit register * * @dev: Device to read from |