[PATCH 1/2] regulator: mcp16502: Remove unneeded fields from struct mcp16502

[PATCH 1/2] regulator: mcp16502: Remove unneeded fields from struct mcp16502

[Axel Lin]

At the context with rdev, we can use rdev->regmap instead of mcp->rmap.
The *rdev[NUM_REGULATORS] is not required because current code uses
devm_regulator_register() so we don't need to store *rdev for clean up
paths.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
 drivers/regulator/mcp16502.c | 40 +++++++++++++++---------------------
 1 file changed, 16 insertions(+), 24 deletions(-)

diff --git a/drivers/regulator/mcp16502.c b/drivers/regulator/mcp16502.c
index 3a8004abe044..9292ab8736c7 100644
--- a/drivers/regulator/mcp16502.c
+++ b/drivers/regulator/mcp16502.c
@@ -119,8 +119,6 @@ enum {
  * @lpm: LPM GPIO descriptor
  */
 struct mcp16502 {
-	struct regulator_dev *rdev[NUM_REGULATORS];
-	struct regmap *rmap;
 	struct gpio_desc *lpm;
 };
 
@@ -179,13 +177,12 @@ static unsigned int mcp16502_get_mode(struct regulator_dev *rdev)
 {
 	unsigned int val;
 	int ret, reg;
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 
 	reg = mcp16502_get_reg(rdev, MCP16502_OPMODE_ACTIVE);
 	if (reg < 0)
 		return reg;
 
-	ret = regmap_read(mcp->rmap, reg, &val);
+	ret = regmap_read(rdev->regmap, reg, &val);
 	if (ret)
 		return ret;
 
@@ -211,7 +208,6 @@ static int _mcp16502_set_mode(struct regulator_dev *rdev, unsigned int mode,
 {
 	int val;
 	int reg;
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 
 	reg = mcp16502_get_reg(rdev, op_mode);
 	if (reg < 0)
@@ -228,7 +224,7 @@ static int _mcp16502_set_mode(struct regulator_dev *rdev, unsigned int mode,
 		return -EINVAL;
 	}
 
-	reg = regmap_update_bits(mcp->rmap, reg, MCP16502_MODE, val);
+	reg = regmap_update_bits(rdev->regmap, reg, MCP16502_MODE, val);
 	return reg;
 }
 
@@ -247,9 +243,8 @@ static int mcp16502_get_status(struct regulator_dev *rdev)
 {
 	int ret;
 	unsigned int val;
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 
-	ret = regmap_read(mcp->rmap, MCP16502_STAT_BASE(rdev_get_id(rdev)),
+	ret = regmap_read(rdev->regmap, MCP16502_STAT_BASE(rdev_get_id(rdev)),
 			  &val);
 	if (ret)
 		return ret;
@@ -290,7 +285,6 @@ static int mcp16502_suspend_get_target_reg(struct regulator_dev *rdev)
  */
 static int mcp16502_set_suspend_voltage(struct regulator_dev *rdev, int uV)
 {
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 	int sel = regulator_map_voltage_linear_range(rdev, uV, uV);
 	int reg = mcp16502_suspend_get_target_reg(rdev);
 
@@ -300,7 +294,7 @@ static int mcp16502_set_suspend_voltage(struct regulator_dev *rdev, int uV)
 	if (reg < 0)
 		return reg;
 
-	return regmap_update_bits(mcp->rmap, reg, MCP16502_VSEL, sel);
+	return regmap_update_bits(rdev->regmap, reg, MCP16502_VSEL, sel);
 }
 
 /*
@@ -328,13 +322,12 @@ static int mcp16502_set_suspend_mode(struct regulator_dev *rdev,
  */
 static int mcp16502_set_suspend_enable(struct regulator_dev *rdev)
 {
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 	int reg = mcp16502_suspend_get_target_reg(rdev);
 
 	if (reg < 0)
 		return reg;
 
-	return regmap_update_bits(mcp->rmap, reg, MCP16502_EN, MCP16502_EN);
+	return regmap_update_bits(rdev->regmap, reg, MCP16502_EN, MCP16502_EN);
 }
 
 /*
@@ -342,13 +335,12 @@ static int mcp16502_set_suspend_enable(struct regulator_dev *rdev)
  */
 static int mcp16502_set_suspend_disable(struct regulator_dev *rdev)
 {
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 	int reg = mcp16502_suspend_get_target_reg(rdev);
 
 	if (reg < 0)
 		return reg;
 
-	return regmap_update_bits(mcp->rmap, reg, MCP16502_EN, 0);
+	return regmap_update_bits(rdev->regmap, reg, MCP16502_EN, 0);
 }
 #endif /* CONFIG_SUSPEND */
 
@@ -441,17 +433,16 @@ static const struct regmap_config mcp16502_regmap_config = {
 static int setup_regulators(struct mcp16502 *mcp, struct device *dev,
 			    struct regulator_config config)
 {
+	struct regulator_dev *rdev;
 	int i;
 
 	for (i = 0; i < NUM_REGULATORS; i++) {
-		mcp->rdev[i] = devm_regulator_register(dev,
-						       &mcp16502_desc[i],
-						       &config);
-		if (IS_ERR(mcp->rdev[i])) {
+		rdev = devm_regulator_register(dev, &mcp16502_desc[i], &config);
+		if (IS_ERR(rdev)) {
 			dev_err(dev,
 				"failed to register %s regulator %ld\n",
-				mcp16502_desc[i].name, PTR_ERR(mcp->rdev[i]));
-			return PTR_ERR(mcp->rdev[i]);
+				mcp16502_desc[i].name, PTR_ERR(rdev));
+			return PTR_ERR(rdev);
 		}
 	}
 
@@ -464,6 +455,7 @@ static int mcp16502_probe(struct i2c_client *client,
 	struct regulator_config config = { };
 	struct device *dev;
 	struct mcp16502 *mcp;
+	struct regmap *rmap;
 	int ret = 0;
 
 	dev = &client->dev;
@@ -473,15 +465,15 @@ static int mcp16502_probe(struct i2c_client *client,
 	if (!mcp)
 		return -ENOMEM;
 
-	mcp->rmap = devm_regmap_init_i2c(client, &mcp16502_regmap_config);
-	if (IS_ERR(mcp->rmap)) {
-		ret = PTR_ERR(mcp->rmap);
+	rmap = devm_regmap_init_i2c(client, &mcp16502_regmap_config);
+	if (IS_ERR(rmap)) {
+		ret = PTR_ERR(rmap);
 		dev_err(dev, "regmap init failed: %d\n", ret);
 		return ret;
 	}
 
 	i2c_set_clientdata(client, mcp);
-	config.regmap = mcp->rmap;
+	config.regmap = rmap;
 	config.driver_data = mcp;
 
 	mcp->lpm = devm_gpiod_get(dev, "lpm", GPIOD_OUT_LOW);
-- 
2.17.1

[PATCH 2/2] regulator: mcp16502: Remove setup_regulators function

[Axel Lin]

It seems a little bit odd current code pass struct regulator_config rather
than a pointer to setup_regulators. The setup_regulators is so simple and
only has one caller, so remove it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
 drivers/regulator/mcp16502.c | 37 +++++++++++-------------------------
 1 file changed, 11 insertions(+), 26 deletions(-)

diff --git a/drivers/regulator/mcp16502.c b/drivers/regulator/mcp16502.c
index 9292ab8736c7..e5a02711cb46 100644
--- a/drivers/regulator/mcp16502.c
+++ b/drivers/regulator/mcp16502.c
@@ -427,36 +427,15 @@ static const struct regmap_config mcp16502_regmap_config = {
 	.wr_table	= &mcp16502_yes_reg_table,
 };
 
-/*
- * set_up_regulators() - initialize all regulators
- */
-static int setup_regulators(struct mcp16502 *mcp, struct device *dev,
-			    struct regulator_config config)
-{
-	struct regulator_dev *rdev;
-	int i;
-
-	for (i = 0; i < NUM_REGULATORS; i++) {
-		rdev = devm_regulator_register(dev, &mcp16502_desc[i], &config);
-		if (IS_ERR(rdev)) {
-			dev_err(dev,
-				"failed to register %s regulator %ld\n",
-				mcp16502_desc[i].name, PTR_ERR(rdev));
-			return PTR_ERR(rdev);
-		}
-	}
-
-	return 0;
-}
-
 static int mcp16502_probe(struct i2c_client *client,
 			  const struct i2c_device_id *id)
 {
 	struct regulator_config config = { };
+	struct regulator_dev *rdev;
 	struct device *dev;
 	struct mcp16502 *mcp;
 	struct regmap *rmap;
-	int ret = 0;
+	int i, ret;
 
 	dev = &client->dev;
 	config.dev = dev;
@@ -482,9 +461,15 @@ static int mcp16502_probe(struct i2c_client *client,
 		return PTR_ERR(mcp->lpm);
 	}
 
-	ret = setup_regulators(mcp, dev, config);
-	if (ret != 0)
-		return ret;
+	for (i = 0; i < NUM_REGULATORS; i++) {
+		rdev = devm_regulator_register(dev, &mcp16502_desc[i], &config);
+		if (IS_ERR(rdev)) {
+			dev_err(dev,
+				"failed to register %s regulator %ld\n",
+				mcp16502_desc[i].name, PTR_ERR(rdev));
+			return PTR_ERR(rdev);
+		}
+	}
 
 	mcp16502_gpio_set_mode(mcp, MCP16502_OPMODE_ACTIVE);
 
-- 
2.17.1

Applied "regulator: mcp16502: Remove setup_regulators function" to the regulator tree

[Mark Brown]

The patch

   regulator: mcp16502: Remove setup_regulators function

has been applied to the regulator tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-5.2

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

From 784c24c3e45cc665226e8529d79f319af7cfd09c Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@ingics.com>
Date: Thu, 11 Apr 2019 09:59:23 +0800
Subject: [PATCH] regulator: mcp16502: Remove setup_regulators function

It seems a little bit odd current code pass struct regulator_config rather
than a pointer to setup_regulators. The setup_regulators is so simple and
only has one caller, so remove it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 drivers/regulator/mcp16502.c | 37 +++++++++++-------------------------
 1 file changed, 11 insertions(+), 26 deletions(-)

diff --git a/drivers/regulator/mcp16502.c b/drivers/regulator/mcp16502.c
index 9292ab8736c7..e5a02711cb46 100644
--- a/drivers/regulator/mcp16502.c
+++ b/drivers/regulator/mcp16502.c
@@ -427,36 +427,15 @@ static const struct regmap_config mcp16502_regmap_config = {
 	.wr_table	= &mcp16502_yes_reg_table,
 };
 
-/*
- * set_up_regulators() - initialize all regulators
- */
-static int setup_regulators(struct mcp16502 *mcp, struct device *dev,
-			    struct regulator_config config)
-{
-	struct regulator_dev *rdev;
-	int i;
-
-	for (i = 0; i < NUM_REGULATORS; i++) {
-		rdev = devm_regulator_register(dev, &mcp16502_desc[i], &config);
-		if (IS_ERR(rdev)) {
-			dev_err(dev,
-				"failed to register %s regulator %ld\n",
-				mcp16502_desc[i].name, PTR_ERR(rdev));
-			return PTR_ERR(rdev);
-		}
-	}
-
-	return 0;
-}
-
 static int mcp16502_probe(struct i2c_client *client,
 			  const struct i2c_device_id *id)
 {
 	struct regulator_config config = { };
+	struct regulator_dev *rdev;
 	struct device *dev;
 	struct mcp16502 *mcp;
 	struct regmap *rmap;
-	int ret = 0;
+	int i, ret;
 
 	dev = &client->dev;
 	config.dev = dev;
@@ -482,9 +461,15 @@ static int mcp16502_probe(struct i2c_client *client,
 		return PTR_ERR(mcp->lpm);
 	}
 
-	ret = setup_regulators(mcp, dev, config);
-	if (ret != 0)
-		return ret;
+	for (i = 0; i < NUM_REGULATORS; i++) {
+		rdev = devm_regulator_register(dev, &mcp16502_desc[i], &config);
+		if (IS_ERR(rdev)) {
+			dev_err(dev,
+				"failed to register %s regulator %ld\n",
+				mcp16502_desc[i].name, PTR_ERR(rdev));
+			return PTR_ERR(rdev);
+		}
+	}
 
 	mcp16502_gpio_set_mode(mcp, MCP16502_OPMODE_ACTIVE);
 
-- 
2.20.1

Applied "regulator: mcp16502: Remove unneeded fields from struct mcp16502" to the regulator tree

[Mark Brown]

The patch

   regulator: mcp16502: Remove unneeded fields from struct mcp16502

has been applied to the regulator tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-5.2

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

From 4cf469539b635d2588df4f48bf721890f5f2ade5 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@ingics.com>
Date: Thu, 11 Apr 2019 09:59:22 +0800
Subject: [PATCH] regulator: mcp16502: Remove unneeded fields from struct
 mcp16502

At the context with rdev, we can use rdev->regmap instead of mcp->rmap.
The *rdev[NUM_REGULATORS] is not required because current code uses
devm_regulator_register() so we don't need to store *rdev for clean up
paths.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 drivers/regulator/mcp16502.c | 40 +++++++++++++++---------------------
 1 file changed, 16 insertions(+), 24 deletions(-)

diff --git a/drivers/regulator/mcp16502.c b/drivers/regulator/mcp16502.c
index 3a8004abe044..9292ab8736c7 100644
--- a/drivers/regulator/mcp16502.c
+++ b/drivers/regulator/mcp16502.c
@@ -119,8 +119,6 @@ enum {
  * @lpm: LPM GPIO descriptor
  */
 struct mcp16502 {
-	struct regulator_dev *rdev[NUM_REGULATORS];
-	struct regmap *rmap;
 	struct gpio_desc *lpm;
 };
 
@@ -179,13 +177,12 @@ static unsigned int mcp16502_get_mode(struct regulator_dev *rdev)
 {
 	unsigned int val;
 	int ret, reg;
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 
 	reg = mcp16502_get_reg(rdev, MCP16502_OPMODE_ACTIVE);
 	if (reg < 0)
 		return reg;
 
-	ret = regmap_read(mcp->rmap, reg, &val);
+	ret = regmap_read(rdev->regmap, reg, &val);
 	if (ret)
 		return ret;
 
@@ -211,7 +208,6 @@ static int _mcp16502_set_mode(struct regulator_dev *rdev, unsigned int mode,
 {
 	int val;
 	int reg;
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 
 	reg = mcp16502_get_reg(rdev, op_mode);
 	if (reg < 0)
@@ -228,7 +224,7 @@ static int _mcp16502_set_mode(struct regulator_dev *rdev, unsigned int mode,
 		return -EINVAL;
 	}
 
-	reg = regmap_update_bits(mcp->rmap, reg, MCP16502_MODE, val);
+	reg = regmap_update_bits(rdev->regmap, reg, MCP16502_MODE, val);
 	return reg;
 }
 
@@ -247,9 +243,8 @@ static int mcp16502_get_status(struct regulator_dev *rdev)
 {
 	int ret;
 	unsigned int val;
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 
-	ret = regmap_read(mcp->rmap, MCP16502_STAT_BASE(rdev_get_id(rdev)),
+	ret = regmap_read(rdev->regmap, MCP16502_STAT_BASE(rdev_get_id(rdev)),
 			  &val);
 	if (ret)
 		return ret;
@@ -290,7 +285,6 @@ static int mcp16502_suspend_get_target_reg(struct regulator_dev *rdev)
  */
 static int mcp16502_set_suspend_voltage(struct regulator_dev *rdev, int uV)
 {
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 	int sel = regulator_map_voltage_linear_range(rdev, uV, uV);
 	int reg = mcp16502_suspend_get_target_reg(rdev);
 
@@ -300,7 +294,7 @@ static int mcp16502_set_suspend_voltage(struct regulator_dev *rdev, int uV)
 	if (reg < 0)
 		return reg;
 
-	return regmap_update_bits(mcp->rmap, reg, MCP16502_VSEL, sel);
+	return regmap_update_bits(rdev->regmap, reg, MCP16502_VSEL, sel);
 }
 
 /*
@@ -328,13 +322,12 @@ static int mcp16502_set_suspend_mode(struct regulator_dev *rdev,
  */
 static int mcp16502_set_suspend_enable(struct regulator_dev *rdev)
 {
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 	int reg = mcp16502_suspend_get_target_reg(rdev);
 
 	if (reg < 0)
 		return reg;
 
-	return regmap_update_bits(mcp->rmap, reg, MCP16502_EN, MCP16502_EN);
+	return regmap_update_bits(rdev->regmap, reg, MCP16502_EN, MCP16502_EN);
 }
 
 /*
@@ -342,13 +335,12 @@ static int mcp16502_set_suspend_enable(struct regulator_dev *rdev)
  */
 static int mcp16502_set_suspend_disable(struct regulator_dev *rdev)
 {
-	struct mcp16502 *mcp = rdev_get_drvdata(rdev);
 	int reg = mcp16502_suspend_get_target_reg(rdev);
 
 	if (reg < 0)
 		return reg;
 
-	return regmap_update_bits(mcp->rmap, reg, MCP16502_EN, 0);
+	return regmap_update_bits(rdev->regmap, reg, MCP16502_EN, 0);
 }
 #endif /* CONFIG_SUSPEND */
 
@@ -441,17 +433,16 @@ static const struct regmap_config mcp16502_regmap_config = {
 static int setup_regulators(struct mcp16502 *mcp, struct device *dev,
 			    struct regulator_config config)
 {
+	struct regulator_dev *rdev;
 	int i;
 
 	for (i = 0; i < NUM_REGULATORS; i++) {
-		mcp->rdev[i] = devm_regulator_register(dev,
-						       &mcp16502_desc[i],
-						       &config);
-		if (IS_ERR(mcp->rdev[i])) {
+		rdev = devm_regulator_register(dev, &mcp16502_desc[i], &config);
+		if (IS_ERR(rdev)) {
 			dev_err(dev,
 				"failed to register %s regulator %ld\n",
-				mcp16502_desc[i].name, PTR_ERR(mcp->rdev[i]));
-			return PTR_ERR(mcp->rdev[i]);
+				mcp16502_desc[i].name, PTR_ERR(rdev));
+			return PTR_ERR(rdev);
 		}
 	}
 
@@ -464,6 +455,7 @@ static int mcp16502_probe(struct i2c_client *client,
 	struct regulator_config config = { };
 	struct device *dev;
 	struct mcp16502 *mcp;
+	struct regmap *rmap;
 	int ret = 0;
 
 	dev = &client->dev;
@@ -473,15 +465,15 @@ static int mcp16502_probe(struct i2c_client *client,
 	if (!mcp)
 		return -ENOMEM;
 
-	mcp->rmap = devm_regmap_init_i2c(client, &mcp16502_regmap_config);
-	if (IS_ERR(mcp->rmap)) {
-		ret = PTR_ERR(mcp->rmap);
+	rmap = devm_regmap_init_i2c(client, &mcp16502_regmap_config);
+	if (IS_ERR(rmap)) {
+		ret = PTR_ERR(rmap);
 		dev_err(dev, "regmap init failed: %d\n", ret);
 		return ret;
 	}
 
 	i2c_set_clientdata(client, mcp);
-	config.regmap = mcp->rmap;
+	config.regmap = rmap;
 	config.driver_data = mcp;
 
 	mcp->lpm = devm_gpiod_get(dev, "lpm", GPIOD_OUT_LOW);
-- 
2.20.1