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path: root/drivers/regulator/max8660.c
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Diffstat (limited to 'drivers/regulator/max8660.c')
-rw-r--r--drivers/regulator/max8660.c61
1 files changed, 25 insertions, 36 deletions
diff --git a/drivers/regulator/max8660.c b/drivers/regulator/max8660.c
index 144bcacd734..2fc41118879 100644
--- a/drivers/regulator/max8660.c
+++ b/drivers/regulator/max8660.c
@@ -81,16 +81,17 @@ enum {
struct max8660 {
struct i2c_client *client;
u8 shadow_regs[MAX8660_N_REGS]; /* as chip is write only */
- struct regulator_dev *rdev[];
};
static int max8660_write(struct max8660 *max8660, u8 reg, u8 mask, u8 val)
{
- static const u8 max8660_addresses[MAX8660_N_REGS] =
- { 0x10, 0x12, 0x20, 0x23, 0x24, 0x29, 0x2a, 0x32, 0x33, 0x39, 0x80 };
+ static const u8 max8660_addresses[MAX8660_N_REGS] = {
+ 0x10, 0x12, 0x20, 0x23, 0x24, 0x29, 0x2a, 0x32, 0x33, 0x39, 0x80
+ };
int ret;
u8 reg_val = (max8660->shadow_regs[reg] & mask) | val;
+
dev_vdbg(&max8660->client->dev, "Writing reg %02x with %02x\n",
max8660_addresses[reg], reg_val);
@@ -112,6 +113,7 @@ static int max8660_dcdc_is_enabled(struct regulator_dev *rdev)
struct max8660 *max8660 = rdev_get_drvdata(rdev);
u8 val = max8660->shadow_regs[MAX8660_OVER1];
u8 mask = (rdev_get_id(rdev) == MAX8660_V3) ? 1 : 4;
+
return !!(val & mask);
}
@@ -119,6 +121,7 @@ static int max8660_dcdc_enable(struct regulator_dev *rdev)
{
struct max8660 *max8660 = rdev_get_drvdata(rdev);
u8 bit = (rdev_get_id(rdev) == MAX8660_V3) ? 1 : 4;
+
return max8660_write(max8660, MAX8660_OVER1, 0xff, bit);
}
@@ -126,15 +129,16 @@ static int max8660_dcdc_disable(struct regulator_dev *rdev)
{
struct max8660 *max8660 = rdev_get_drvdata(rdev);
u8 mask = (rdev_get_id(rdev) == MAX8660_V3) ? ~1 : ~4;
+
return max8660_write(max8660, MAX8660_OVER1, mask, 0);
}
static int max8660_dcdc_get_voltage_sel(struct regulator_dev *rdev)
{
struct max8660 *max8660 = rdev_get_drvdata(rdev);
-
u8 reg = (rdev_get_id(rdev) == MAX8660_V3) ? MAX8660_ADTV2 : MAX8660_SDTV2;
u8 selector = max8660->shadow_regs[reg];
+
return selector;
}
@@ -207,6 +211,7 @@ static int max8660_ldo67_is_enabled(struct regulator_dev *rdev)
struct max8660 *max8660 = rdev_get_drvdata(rdev);
u8 val = max8660->shadow_regs[MAX8660_OVER2];
u8 mask = (rdev_get_id(rdev) == MAX8660_V6) ? 2 : 4;
+
return !!(val & mask);
}
@@ -214,6 +219,7 @@ static int max8660_ldo67_enable(struct regulator_dev *rdev)
{
struct max8660 *max8660 = rdev_get_drvdata(rdev);
u8 bit = (rdev_get_id(rdev) == MAX8660_V6) ? 2 : 4;
+
return max8660_write(max8660, MAX8660_OVER2, 0xff, bit);
}
@@ -221,15 +227,16 @@ static int max8660_ldo67_disable(struct regulator_dev *rdev)
{
struct max8660 *max8660 = rdev_get_drvdata(rdev);
u8 mask = (rdev_get_id(rdev) == MAX8660_V6) ? ~2 : ~4;
+
return max8660_write(max8660, MAX8660_OVER2, mask, 0);
}
static int max8660_ldo67_get_voltage_sel(struct regulator_dev *rdev)
{
struct max8660 *max8660 = rdev_get_drvdata(rdev);
-
u8 shift = (rdev_get_id(rdev) == MAX8660_V6) ? 0 : 4;
u8 selector = (max8660->shadow_regs[MAX8660_L12VCR] >> shift) & 0xf;
+
return selector;
}
@@ -330,7 +337,7 @@ static int max8660_pdata_from_dt(struct device *dev,
struct max8660_subdev_data *sub;
struct of_regulator_match rmatch[ARRAY_SIZE(max8660_reg)];
- np = of_find_node_by_name(dev->of_node, "regulators");
+ np = of_get_child_by_name(dev->of_node, "regulators");
if (!np) {
dev_err(dev, "missing 'regulators' subnode in DT\n");
return -EINVAL;
@@ -340,6 +347,7 @@ static int max8660_pdata_from_dt(struct device *dev,
rmatch[i].name = max8660_reg[i].name;
matched = of_regulator_match(dev, np, rmatch, ARRAY_SIZE(rmatch));
+ of_node_put(np);
if (matched <= 0)
return matched;
@@ -373,7 +381,6 @@ static inline int max8660_pdata_from_dt(struct device *dev,
static int max8660_probe(struct i2c_client *client,
const struct i2c_device_id *i2c_id)
{
- struct regulator_dev **rdev;
struct device *dev = &client->dev;
struct max8660_platform_data *pdata = dev_get_platdata(dev);
struct regulator_config config = { };
@@ -406,14 +413,11 @@ static int max8660_probe(struct i2c_client *client,
return -EINVAL;
}
- max8660 = devm_kzalloc(dev, sizeof(struct max8660) +
- sizeof(struct regulator_dev *) * MAX8660_V_END,
- GFP_KERNEL);
+ max8660 = devm_kzalloc(dev, sizeof(struct max8660), GFP_KERNEL);
if (!max8660)
return -ENOMEM;
max8660->client = client;
- rdev = max8660->rdev;
if (pdata->en34_is_high) {
/* Simulate always on */
@@ -439,7 +443,7 @@ static int max8660_probe(struct i2c_client *client,
for (i = 0; i < pdata->num_subdevs; i++) {
if (!pdata->subdevs[i].platform_data)
- goto err_out;
+ return ret;
boot_on = pdata->subdevs[i].platform_data->constraints.boot_on;
@@ -465,7 +469,7 @@ static int max8660_probe(struct i2c_client *client,
case MAX8660_V7:
if (type == MAX8661) {
dev_err(dev, "Regulator not on this chip!\n");
- goto err_out;
+ return -EINVAL;
}
if (boot_on)
@@ -475,12 +479,13 @@ static int max8660_probe(struct i2c_client *client,
default:
dev_err(dev, "invalid regulator %s\n",
pdata->subdevs[i].name);
- goto err_out;
+ return ret;
}
}
/* Finally register devices */
for (i = 0; i < pdata->num_subdevs; i++) {
+ struct regulator_dev *rdev;
id = pdata->subdevs[i].id;
@@ -489,33 +494,18 @@ static int max8660_probe(struct i2c_client *client,
config.of_node = of_node[i];
config.driver_data = max8660;
- rdev[i] = regulator_register(&max8660_reg[id], &config);
- if (IS_ERR(rdev[i])) {
- ret = PTR_ERR(rdev[i]);
- dev_err(dev, "failed to register %s\n",
+ rdev = devm_regulator_register(&client->dev,
+ &max8660_reg[id], &config);
+ if (IS_ERR(rdev)) {
+ ret = PTR_ERR(rdev);
+ dev_err(&client->dev, "failed to register %s\n",
max8660_reg[id].name);
- goto err_unregister;
+ return PTR_ERR(rdev);
}
}
i2c_set_clientdata(client, max8660);
return 0;
-
-err_unregister:
- while (--i >= 0)
- regulator_unregister(rdev[i]);
-err_out:
- return ret;
-}
-
-static int max8660_remove(struct i2c_client *client)
-{
- struct max8660 *max8660 = i2c_get_clientdata(client);
- int i;
-
- for (i = 0; i < MAX8660_V_END; i++)
- regulator_unregister(max8660->rdev[i]);
- return 0;
}
static const struct i2c_device_id max8660_id[] = {
@@ -527,7 +517,6 @@ MODULE_DEVICE_TABLE(i2c, max8660_id);
static struct i2c_driver max8660_driver = {
.probe = max8660_probe,
- .remove = max8660_remove,
.driver = {
.name = "max8660",
.owner = THIS_MODULE,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 07:48:44 +0000