[PATCH RFT 1/4] regulator: wm831x-dcdc: Convert wm831x_buckp_ops to regulator_list_voltage_linear

[PATCH RFT 1/4] regulator: wm831x-dcdc: Convert wm831x_buckp_ops to regulator_list_voltage_linear

[Axel Lin]

Signed-off-by: Axel Lin <axel.lin@gmail.com>
---
 drivers/regulator/wm831x-dcdc.c |   15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
index 099da11..fbcff56 100644
--- a/drivers/regulator/wm831x-dcdc.c
+++ b/drivers/regulator/wm831x-dcdc.c
@@ -599,15 +599,6 @@ static struct platform_driver wm831x_buckv_driver = {
  * BUCKP specifics
  */
 
-static int wm831x_buckp_list_voltage(struct regulator_dev *rdev,
-				      unsigned selector)
-{
-	if (selector <= WM831X_BUCKP_MAX_SELECTOR)
-		return 850000 + (selector * 25000);
-	else
-		return -EINVAL;
-}
-
 static int wm831x_buckp_set_voltage_int(struct regulator_dev *rdev, int reg,
 					int min_uV, int max_uV, int *selector)
 {
@@ -620,7 +611,7 @@ static int wm831x_buckp_set_voltage_int(struct regulator_dev *rdev, int reg,
 	else
 		return -EINVAL;
 
-	if (wm831x_buckp_list_voltage(rdev, vsel) > max_uV)
+	if (regulator_list_voltage_linear(rdev, vsel) > max_uV)
 		return -EINVAL;
 
 	*selector = vsel;
@@ -652,7 +643,7 @@ static int wm831x_buckp_set_suspend_voltage(struct regulator_dev *rdev,
 static struct regulator_ops wm831x_buckp_ops = {
 	.set_voltage = wm831x_buckp_set_voltage,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
-	.list_voltage = wm831x_buckp_list_voltage,
+	.list_voltage = regulator_list_voltage_linear,
 	.set_suspend_voltage = wm831x_buckp_set_suspend_voltage,
 
 	.is_enabled = regulator_is_enabled_regmap,
@@ -715,6 +706,8 @@ static __devinit int wm831x_buckp_probe(struct platform_device *pdev)
 	dcdc->desc.vsel_mask = WM831X_DC3_ON_VSEL_MASK;
 	dcdc->desc.enable_reg = WM831X_DCDC_ENABLE;
 	dcdc->desc.enable_mask = 1 << id;
+	dcdc->desc.min_uV = 850000;
+	dcdc->desc.uV_step = 25000;
 
 	config.dev = pdev->dev.parent;
 	if (pdata)
-- 
1.7.9.5

[PATCH RFT 2/4] regulator: wm831x-dcdc: Convert wm831x_buckp_ops to regulator_set_voltage_sel_regmap

[Axel Lin]

Signed-off-by: Axel Lin <axel.lin@gmail.com>
---
 drivers/regulator/wm831x-dcdc.c |   44 ++++++++-------------------------------
 1 file changed, 9 insertions(+), 35 deletions(-)

diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
index fbcff56..91b5b0a 100644
--- a/drivers/regulator/wm831x-dcdc.c
+++ b/drivers/regulator/wm831x-dcdc.c
@@ -599,51 +599,25 @@ static struct platform_driver wm831x_buckv_driver = {
  * BUCKP specifics
  */
 
-static int wm831x_buckp_set_voltage_int(struct regulator_dev *rdev, int reg,
-					int min_uV, int max_uV, int *selector)
+static int wm831x_buckp_set_suspend_voltage(struct regulator_dev *rdev, int uV)
 {
 	struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
 	struct wm831x *wm831x = dcdc->wm831x;
-	u16 vsel;
-
-	if (min_uV <= 34000000)
-		vsel = (min_uV - 850000) / 25000;
-	else
-		return -EINVAL;
-
-	if (regulator_list_voltage_linear(rdev, vsel) > max_uV)
-		return -EINVAL;
-
-	*selector = vsel;
-
-	return wm831x_set_bits(wm831x, reg, WM831X_DC3_ON_VSEL_MASK, vsel);
-}
-
-static int wm831x_buckp_set_voltage(struct regulator_dev *rdev,
-				    int min_uV, int max_uV,
-				    unsigned *selector)
-{
-	struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
-	u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
-
-	return wm831x_buckp_set_voltage_int(rdev, reg, min_uV, max_uV,
-					    selector);
-}
-
-static int wm831x_buckp_set_suspend_voltage(struct regulator_dev *rdev,
-					    int uV)
-{
-	struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
 	u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL;
-	unsigned selector;
+	int sel;
+
+	sel = regulator_map_voltage_linear(rdev, uV, uV);
+	if (sel < 0)
+		return sel;
 
-	return wm831x_buckp_set_voltage_int(rdev, reg, uV, uV, &selector);
+	return wm831x_set_bits(wm831x, reg, WM831X_DC3_ON_VSEL_MASK, sel);
 }
 
 static struct regulator_ops wm831x_buckp_ops = {
-	.set_voltage = wm831x_buckp_set_voltage,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
 	.list_voltage = regulator_list_voltage_linear,
+	.map_voltage = regulator_map_voltage_linear,
 	.set_suspend_voltage = wm831x_buckp_set_suspend_voltage,
 
 	.is_enabled = regulator_is_enabled_regmap,
-- 
1.7.9.5

[PATCH RFT 3/4] regulator: wm831x-dcdc: Convert wm831x_buckv_ops to set_voltage_sel and map_voltage

[Axel Lin]

Signed-off-by: Axel Lin <axel.lin@gmail.com>
---
 drivers/regulator/wm831x-dcdc.c |   34 +++++++++++++++-------------------
 1 file changed, 15 insertions(+), 19 deletions(-)

diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
index 91b5b0a..eea53e1 100644
--- a/drivers/regulator/wm831x-dcdc.c
+++ b/drivers/regulator/wm831x-dcdc.c
@@ -215,8 +215,8 @@ static int wm831x_buckv_list_voltage(struct regulator_dev *rdev,
 	return -EINVAL;
 }
 
-static int wm831x_buckv_select_min_voltage(struct regulator_dev *rdev,
-					   int min_uV, int max_uV)
+static int wm831x_buckv_map_voltage(struct regulator_dev *rdev,
+				   int min_uV, int max_uV)
 {
 	u16 vsel;
 
@@ -251,33 +251,28 @@ static int wm831x_buckv_set_dvs(struct regulator_dev *rdev, int state)
 	return 0;
 }
 
-static int wm831x_buckv_set_voltage(struct regulator_dev *rdev,
-				    int min_uV, int max_uV, unsigned *selector)
+static int wm831x_buckv_set_voltage_sel(struct regulator_dev *rdev,
+					unsigned selector)
 {
 	struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
 	struct wm831x *wm831x = dcdc->wm831x;
 	int on_reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
 	int dvs_reg = dcdc->base + WM831X_DCDC_DVS_CONTROL;
-	int vsel, ret;
-
-	vsel = wm831x_buckv_select_min_voltage(rdev, min_uV, max_uV);
-	if (vsel < 0)
-		return vsel;
-
-	*selector = vsel;
+	int ret;
 
 	/* If this value is already set then do a GPIO update if we can */
-	if (dcdc->dvs_gpio && dcdc->on_vsel == vsel)
+	if (dcdc->dvs_gpio && dcdc->on_vsel == selector)
 		return wm831x_buckv_set_dvs(rdev, 0);
 
-	if (dcdc->dvs_gpio && dcdc->dvs_vsel == vsel)
+	if (dcdc->dvs_gpio && dcdc->dvs_vsel == selector)
 		return wm831x_buckv_set_dvs(rdev, 1);
 
 	/* Always set the ON status to the minimum voltage */
-	ret = wm831x_set_bits(wm831x, on_reg, WM831X_DC1_ON_VSEL_MASK, vsel);
+	ret = wm831x_set_bits(wm831x, on_reg, WM831X_DC1_ON_VSEL_MASK,
+			      selector);
 	if (ret < 0)
 		return ret;
-	dcdc->on_vsel = vsel;
+	dcdc->on_vsel = selector;
 
 	if (!dcdc->dvs_gpio)
 		return ret;
@@ -293,12 +288,12 @@ static int wm831x_buckv_set_voltage(struct regulator_dev *rdev,
 	 * usage where we want to get to the highest voltage very
 	 * quickly.
 	 */
-	if (vsel > dcdc->dvs_vsel) {
+	if (selector > dcdc->dvs_vsel) {
 		ret = wm831x_set_bits(wm831x, dvs_reg,
 				      WM831X_DC1_DVS_VSEL_MASK,
 				      dcdc->dvs_vsel);
 		if (ret == 0)
-			dcdc->dvs_vsel = vsel;
+			dcdc->dvs_vsel = selector;
 		else
 			dev_warn(wm831x->dev,
 				 "Failed to set DCDC DVS VSEL: %d\n", ret);
@@ -315,7 +310,7 @@ static int wm831x_buckv_set_suspend_voltage(struct regulator_dev *rdev,
 	u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL;
 	int vsel;
 
-	vsel = wm831x_buckv_select_min_voltage(rdev, uV, uV);
+	vsel = wm831x_buckv_map_voltage(rdev, uV, uV);
 	if (vsel < 0)
 		return vsel;
 
@@ -373,9 +368,10 @@ static int wm831x_buckv_get_current_limit(struct regulator_dev *rdev)
 }
 
 static struct regulator_ops wm831x_buckv_ops = {
-	.set_voltage = wm831x_buckv_set_voltage,
+	.set_voltage_sel = wm831x_buckv_set_voltage_sel,
 	.get_voltage_sel = wm831x_buckv_get_voltage_sel,
 	.list_voltage = wm831x_buckv_list_voltage,
+	.map_voltage = wm831x_buckv_map_voltage,
 	.set_suspend_voltage = wm831x_buckv_set_suspend_voltage,
 	.set_current_limit = wm831x_buckv_set_current_limit,
 	.get_current_limit = wm831x_buckv_get_current_limit,
-- 
1.7.9.5

Re: [PATCH RFT 3/4] regulator: wm831x-dcdc: Convert wm831x_buckv_ops to set_voltage_sel and map_voltage

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 356 bytes --]

On Tue, Jun 12, 2012 at 10:23:09AM +0800, Axel Lin wrote:
> Signed-off-by: Axel Lin <axel.lin@gmail.com>

This patch is way more invasive than it needs to be (and therefore hard
to check) because

> -	if (dcdc->dvs_gpio && dcdc->on_vsel == vsel)
> +	if (dcdc->dvs_gpio && dcdc->on_vsel == selector)

you've replaced vsel with selector throughout the code.

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Re: [PATCH RFT 3/4] regulator: wm831x-dcdc: Convert wm831x_buckv_ops to set_voltage_sel and map_voltage

[Axel Lin]

2012/6/13 Mark Brown <broonie@opensource.wolfsonmicro.com>:
> On Tue, Jun 12, 2012 at 10:23:09AM +0800, Axel Lin wrote:
>> Signed-off-by: Axel Lin <axel.lin@gmail.com>
>
> This patch is way more invasive than it needs to be (and therefore hard
> to check) because
>
>> -     if (dcdc->dvs_gpio && dcdc->on_vsel == vsel)
>> +     if (dcdc->dvs_gpio && dcdc->on_vsel == selector)
>
> you've replaced vsel with selector throughout the code.

Sorry. I don't get it.

In wm831x_buckv_set_voltage(), we call
wm831x_buckv_select_min_voltage() to get the selector ( named vsel).

In this patch, now we convert to set_voltage_sel:

static int wm831x_buckv_set_voltage_sel(struct regulator_dev *rdev,
                                        unsigned selector)

So the selector now named 'selector'.


Or do you prefer I chenge the prototype to:

static int wm831x_buckv_set_voltage_sel(struct regulator_dev *rdev,
                                        unsigned vsel)

Then the diff can be smaller.

Regards,
Axel

Re: [PATCH RFT 3/4] regulator: wm831x-dcdc: Convert wm831x_buckv_ops to set_voltage_sel and map_voltage

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 408 bytes --]

On Wed, Jun 13, 2012 at 07:41:26PM +0800, Axel Lin wrote:

> Or do you prefer I chenge the prototype to:

> static int wm831x_buckv_set_voltage_sel(struct regulator_dev *rdev,
>                                         unsigned vsel)

> Then the diff can be smaller.

Yes, this is the point.  A huge proportion of the change is a cosmetic
change for this rename which makes it much harder to read and review.

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[PATCH RFT 4/4] regulator: wm831x-dcdc: Convert to devm_request_threaded_irq

[Axel Lin]

Signed-off-by: Axel Lin <axel.lin@gmail.com>
---
 drivers/regulator/wm831x-dcdc.c |   35 ++++++++++++-----------------------
 1 file changed, 12 insertions(+), 23 deletions(-)

diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
index eea53e1..5ec10d7 100644
--- a/drivers/regulator/wm831x-dcdc.c
+++ b/drivers/regulator/wm831x-dcdc.c
@@ -532,8 +532,9 @@ static __devinit int wm831x_buckv_probe(struct platform_device *pdev)
 	}
 
 	irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
-	ret = request_threaded_irq(irq, NULL, wm831x_dcdc_uv_irq,
-				   IRQF_TRIGGER_RISING, dcdc->name, dcdc);
+	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+					wm831x_dcdc_uv_irq, IRQF_TRIGGER_RISING,
+					dcdc->name, dcdc);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
 			irq, ret);
@@ -541,8 +542,9 @@ static __devinit int wm831x_buckv_probe(struct platform_device *pdev)
 	}
 
 	irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "HC"));
-	ret = request_threaded_irq(irq, NULL, wm831x_dcdc_oc_irq,
-				   IRQF_TRIGGER_RISING, dcdc->name, dcdc);
+	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+					wm831x_dcdc_oc_irq, IRQF_TRIGGER_RISING,
+					dcdc->name, dcdc);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "Failed to request HC IRQ %d: %d\n",
 			irq, ret);
@@ -554,8 +556,6 @@ static __devinit int wm831x_buckv_probe(struct platform_device *pdev)
 	return 0;
 
 err_uv:
-	free_irq(wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")),
-		 dcdc);
 err_regulator:
 	regulator_unregister(dcdc->regulator);
 err:
@@ -567,14 +567,8 @@ err:
 static __devexit int wm831x_buckv_remove(struct platform_device *pdev)
 {
 	struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
-	struct wm831x *wm831x = dcdc->wm831x;
 
 	platform_set_drvdata(pdev, NULL);
-
-	free_irq(wm831x_irq(wm831x, platform_get_irq_byname(pdev, "HC")),
-			    dcdc);
-	free_irq(wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")),
-			    dcdc);
 	regulator_unregister(dcdc->regulator);
 	if (dcdc->dvs_gpio)
 		gpio_free(dcdc->dvs_gpio);
@@ -694,8 +688,9 @@ static __devinit int wm831x_buckp_probe(struct platform_device *pdev)
 	}
 
 	irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
-	ret = request_threaded_irq(irq, NULL, wm831x_dcdc_uv_irq,
-				   IRQF_TRIGGER_RISING,	dcdc->name, dcdc);
+	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+					wm831x_dcdc_uv_irq, IRQF_TRIGGER_RISING,
+					dcdc->name, dcdc);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
 			irq, ret);
@@ -717,9 +712,6 @@ static __devexit int wm831x_buckp_remove(struct platform_device *pdev)
 	struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
 
 	platform_set_drvdata(pdev, NULL);
-
-	free_irq(wm831x_irq(dcdc->wm831x, platform_get_irq_byname(pdev, "UV")),
-			    dcdc);
 	regulator_unregister(dcdc->regulator);
 
 	return 0;
@@ -828,9 +820,9 @@ static __devinit int wm831x_boostp_probe(struct platform_device *pdev)
 	}
 
 	irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
-	ret = request_threaded_irq(irq, NULL, wm831x_dcdc_uv_irq,
-				   IRQF_TRIGGER_RISING, dcdc->name,
-				   dcdc);
+	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+					wm831x_dcdc_uv_irq, IRQF_TRIGGER_RISING,
+					dcdc->name, dcdc);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
 			irq, ret);
@@ -852,9 +844,6 @@ static __devexit int wm831x_boostp_remove(struct platform_device *pdev)
 	struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
 
 	platform_set_drvdata(pdev, NULL);
-
-	free_irq(wm831x_irq(dcdc->wm831x, platform_get_irq_byname(pdev, "UV")),
-		 dcdc);
 	regulator_unregister(dcdc->regulator);
 
 	return 0;
-- 
1.7.9.5

Re: [PATCH RFT 4/4] regulator: wm831x-dcdc: Convert to devm_request_threaded_irq

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 149 bytes --]

On Tue, Jun 12, 2012 at 10:24:09AM +0800, Axel Lin wrote:
> Signed-off-by: Axel Lin <axel.lin@gmail.com>

Again, this has issues for driver removal.

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