rtc: m41t62: implements read8/write8 operations

These operations are required by dm_rtc_read and
dm_bootcount_get helpers.

Signed-off-by: Thomas Perrot <thomas.perrot@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/rtc/m41t62.c b/drivers/rtc/m41t62.c
index 66a0faa0ecff909c6a202043802433c768278249..891fe09d311b31fc94af723c7826bda2b6f629b1 100644 (file)
--- a/drivers/rtc/m41t62.c
+++ b/drivers/rtc/m41t62.c
@@ -283,6 +283,16 @@ static int m41t62_rtc_reset(struct udevice *dev)
        return m41t62_sqw_enable(dev, true);
 }
 
+static int m41t62_rtc_read8(struct udevice *dev, unsigned int reg)
+{
+       return dm_i2c_reg_read(dev, reg);
+}
+
+static int m41t62_rtc_write8(struct udevice *dev, unsigned int reg, int val)
+{
+       return dm_i2c_reg_write(dev, reg, val);
+}
+
 /*
  * Make sure HT bit is cleared. This bit is set on entering battery backup
  * mode, so do this before the first read access.
@@ -296,6 +306,8 @@ static const struct rtc_ops m41t62_rtc_ops = {
        .get = m41t62_rtc_get,
        .set = m41t62_rtc_set,
        .reset = m41t62_rtc_reset,
+       .read8 = m41t62_rtc_read8,
+       .write8 = m41t62_rtc_write8,
 };
 
 static const struct udevice_id m41t62_rtc_ids[] = {