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drivers: rtc: max313xx: provide read8/write8

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In some designs the MAX313xx RTC may need calibration to cope with
oscillator inaccuracies. Provide read8/write8 ops so that the registers
can be accessed. Because the driver covers a range of MAX313xx variants
no attempt is made to ensure the register is valid.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
This commit is contained in:
Chris Packham 2023-07-12 11:30:44 +12:00 committed by Tom Rini
parent b1aade87ca
commit d6c0d7087f
1 changed files with 12 additions and 0 deletions
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12
drivers/rtc/max313xx.c
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@ -326,10 +326,22 @@ static int max313xx_reset(struct udevice *dev)
return ret; return ret;
} }
static int max313xx_read8(struct udevice *dev, unsigned int reg)
{
return dm_i2c_reg_read(dev, reg);
}
static int max313xx_write8(struct udevice *dev, unsigned int reg, int val)
{
return dm_i2c_reg_write(dev, reg, val);
}
static const struct rtc_ops max3133x_rtc_ops = { static const struct rtc_ops max3133x_rtc_ops = {
.get = max313xx_read_time, .get = max313xx_read_time,
.set = max313xx_set_time, .set = max313xx_set_time,
.reset = max313xx_reset, .reset = max313xx_reset,
.read8 = max313xx_read8,
.write8 = max313xx_write8,
}; };
static int max313xx_init(struct udevice *dev) static int max313xx_init(struct udevice *dev)