From d6c0d7087f0d17d954a39e0f6af406cfb2d7d43a Mon Sep 17 00:00:00 2001 From: Chris Packham Date: Wed, 12 Jul 2023 11:30:44 +1200 Subject: [PATCH] drivers: rtc: max313xx: provide read8/write8 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 --- drivers/rtc/max313xx.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/rtc/max313xx.c b/drivers/rtc/max313xx.c index 748f3c42c3..60400235dd 100644 --- a/drivers/rtc/max313xx.c +++ b/drivers/rtc/max313xx.c @@ -326,10 +326,22 @@ static int max313xx_reset(struct udevice *dev) 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 = { .get = max313xx_read_time, .set = max313xx_set_time, .reset = max313xx_reset, + .read8 = max313xx_read8, + .write8 = max313xx_write8, }; static int max313xx_init(struct udevice *dev) -- 2.39.5