[PATCH 3/3] regulator: axp20x: simplify device access

From: Jean-Francois Moine
Date: Fri Sep 23 2016 - 03:49:16 EST

Use the pointer to the main regulator device instead of the pointer
to the child platform device.

Signed-off-by: Jean-Francois Moine <moinejf@xxxxxxx>
---
drivers/regulator/axp20x-regulator.c | 45 ++++++++++++++++++------------------
1 file changed, 23 insertions(+), 22 deletions(-)

diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index 7405f5b..244ddc3 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -347,9 +347,9 @@ static const struct regulator_desc axp809_regulators[] = {
AXP_DESC_SW(AXP809, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(6)),
};

-static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
+static int axp20x_set_dcdc_freq(struct device *dev, u32 dcdcfreq)
{
- struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
+ struct axp20x_dev *axp20x = dev_get_drvdata(dev);
unsigned int reg = AXP20X_DCDC_FREQ;
u32 min, max, def, step;

@@ -378,7 +378,7 @@ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
step = 150;
break;
default:
- dev_err(&pdev->dev,
+ dev_err(dev,
"Setting DCDC frequency for unsupported AXP variant\n");
return -EINVAL;
}
@@ -388,13 +388,13 @@ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)

if (dcdcfreq < min) {
dcdcfreq = min;
- dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
+ dev_warn(dev, "DCDC frequency too low. Set to %ukHz\n",
min);
}

if (dcdcfreq > max) {
dcdcfreq = max;
- dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
+ dev_warn(dev, "DCDC frequency too high. Set to %ukHz\n",
max);
}

@@ -404,24 +404,24 @@ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
AXP20X_FREQ_DCDC_MASK, dcdcfreq);
}

-static int axp20x_regulator_parse_dt(struct platform_device *pdev)
+static int axp20x_regulator_parse_dt(struct device *dev)
{
struct device_node *np, *regulators;
int ret;
u32 dcdcfreq = 0;

- np = of_node_get(pdev->dev.parent->of_node);
+ np = of_node_get(dev->of_node);
if (!np)
return 0;

regulators = of_get_child_by_name(np, "regulators");
if (!regulators) {
- dev_warn(&pdev->dev, "regulators node not found\n");
+ dev_warn(dev, "regulators node not found\n");
} else {
of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
- ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
+ ret = axp20x_set_dcdc_freq(dev, dcdcfreq);
if (ret < 0) {
- dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
+ dev_err(dev, "Error setting dcdc frequency: %d\n", ret);
return ret;
}

@@ -499,11 +499,12 @@ static u32 axp20x_polyphase_slave(struct axp20x_dev *axp20x)

static int axp20x_regulator_probe(struct platform_device *pdev)
{
+ struct device *dev = pdev->dev.parent;
struct regulator_dev *rdev;
- struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
+ struct axp20x_dev *axp20x = dev_get_drvdata(dev);
const struct regulator_desc *regulators;
struct regulator_config config = {
- .dev = pdev->dev.parent,
+ .dev = dev,
.regmap = axp20x->regmap,
.driver_data = axp20x,
};
@@ -532,7 +533,7 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
dcdc5_ix = AXP22X_DCDC5;
dc1sw_ix = AXP22X_DC1SW;
dc5ldo_ix = AXP22X_DC5LDO;
- drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
+ drivevbus = of_property_read_bool(dev->of_node,
"x-powers,drive-vbus-en");
break;
case AXP806_ID:
@@ -555,13 +556,13 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
dc5ldo_ix = AXP809_DC5LDO;
break;
default:
- dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
+ dev_err(dev, "Unsupported AXP variant: %ld\n",
axp20x->variant);
return -EINVAL;
}

/* This only sets the dcdc freq. Ignore any errors */
- axp20x_regulator_parse_dt(pdev);
+ axp20x_regulator_parse_dt(dev);

for (i = 0; i < nregulators; i++) {
const struct regulator_desc *desc = &regulators[i];
@@ -580,7 +581,7 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
* name.
*/
if (i == dc1sw_ix && dcdc1_name) {
- new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
+ new_desc = devm_kzalloc(dev, sizeof(*desc),
GFP_KERNEL);
*new_desc = regulators[i];
new_desc->supply_name = dcdc1_name;
@@ -588,16 +589,16 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
}

if (i == dc5ldo_ix && dcdc5_name) {
- new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
+ new_desc = devm_kzalloc(dev, sizeof(*desc),
GFP_KERNEL);
*new_desc = regulators[i];
new_desc->supply_name = dcdc5_name;
desc = new_desc;
}

- rdev = devm_regulator_register(&pdev->dev, desc, &config);
+ rdev = devm_regulator_register(dev, desc, &config);
if (IS_ERR(rdev)) {
- dev_err(&pdev->dev, "Failed to register %s\n",
+ dev_err(dev, "Failed to register %s\n",
regulators[i].name);

return PTR_ERR(rdev);
@@ -608,7 +609,7 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
&workmode);
if (!ret) {
if (axp20x_set_dcdc_workmode(rdev, i, workmode))
- dev_err(&pdev->dev, "Failed to set workmode on %s\n",
+ dev_err(dev, "Failed to set workmode on %s\n",
rdev->desc->name);
}

@@ -630,11 +631,11 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
/* Change N_VBUSEN sense pin to DRIVEVBUS output pin */
regmap_update_bits(axp20x->regmap, AXP20X_OVER_TMP,
AXP22X_MISC_N_VBUSEN_FUNC, 0);
- rdev = devm_regulator_register(&pdev->dev,
+ rdev = devm_regulator_register(dev,
&axp22x_drivevbus_regulator,
&config);
if (IS_ERR(rdev)) {
- dev_err(&pdev->dev, "Failed to register drivevbus\n");
+ dev_err(dev, "Failed to register drivevbus\n");
return PTR_ERR(rdev);
}
}
--
2.10.0