diff options
Diffstat (limited to 'drivers/rtc/rtc-uclass.c')
| -rw-r--r-- | drivers/rtc/rtc-uclass.c | 59 |
1 files changed, 55 insertions, 4 deletions
diff --git a/drivers/rtc/rtc-uclass.c b/drivers/rtc/rtc-uclass.c index 926cca234e..8035f7fe9c 100644 --- a/drivers/rtc/rtc-uclass.c +++ b/drivers/rtc/rtc-uclass.c @@ -40,24 +40,75 @@ int dm_rtc_reset(struct udevice *dev) return ops->reset(dev); } -int rtc_read8(struct udevice *dev, unsigned int reg) +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; - return ops->read8(dev, reg); + while (len--) { + int ret = ops->read8(dev, reg++); + + if (ret < 0) + return ret; + *buf++ = ret; + } + return 0; } -int rtc_write8(struct udevice *dev, unsigned int reg, int val) +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; - return ops->write8(dev, reg, val); + 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); + + assert(ops); + if (ops->read8) + return ops->read8(dev, reg); + if (ops->read) { + u8 buf[1]; + int ret = ops->read(dev, reg, buf, 1); + + if (ret < 0) + return ret; + return buf[0]; + } + return -ENOSYS; +} + +int rtc_write8(struct udevice *dev, unsigned int reg, int val) +{ + struct rtc_ops *ops = rtc_get_ops(dev); + + assert(ops); + if (ops->write8) + return ops->write8(dev, reg, val); + if (ops->write) { + u8 buf[1] = { val }; + + return ops->write(dev, reg, buf, 1); + } + return -ENOSYS; } int rtc_read16(struct udevice *dev, unsigned int reg, u16 *valuep) |