[PATCH v2 2/2] regulator: uniphier: add regulator driver for UniPhier SoC

Hi Mark,

On Tue, 10 Jul 2018 18:44:51 +0100 [off-list ref] wrote:

On Tue, Jul 10, 2018 at 10:27:17AM +0900, Kunihiko Hayashi wrote:

quoted

+static int uniphier_regulator_enable(struct regulator_dev *rdev)
+{
+	struct uniphier_regulator_priv *priv = rdev_get_drvdata(rdev);
+
+	return regmap_update_bits(priv->regmap, rdev->desc->enable_reg,
+				  rdev->desc->enable_mask,
+				  rdev->desc->enable_val);
+}

This is just regulator_enable_regmap() isn't it?  Same for disable,
unless I'm missing something (which is possible).

Exactly, it's reasonable to replace this with the helper function.
I'll check and apply it.

quoted

+static int uniphier_regulator_is_enabled(struct regulator_dev *rdev)
+{
+	struct uniphier_regulator_priv *priv = rdev_get_drvdata(rdev);
+	unsigned int val;
+	int ret = -EINVAL;
+
+	regmap_read(priv->regmap, rdev->desc->enable_reg, &val);
+	val &= rdev->desc->enable_mask;
+
+	if (val == rdev->desc->enable_val)
+		ret = 1;
+	else if (val == rdev->desc->disable_val)
+		ret = 0;
+
+	return ret;
+}

This isn't *quite* regulator_is_enabled_regmap() as it explicitly checks
if the disable value is set and errors otherwise which would be a good
fix for that.  Could you do a patch for that?

Although I'm worried that the register have a value that is neither
enable_val or disable_val, the "is_enabled" function returns whether
the regulator is enabled or not, so I can apply regulator_is_enabled_regmap().
I'll apply it in v3.

Thank you,

---
Best Regards,
Kunihiko Hayashi