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authorThéo Borém Fabris <theobf@usp.br>2021-07-25 00:02:00 +0200
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2021-07-31 19:17:22 +0200
commit6a25893cb0e255ab8888d6a4f40e8d1e9d554ad0 (patch)
tree00f3601c0758410e8f293b133271601b88391ffc
parentdt-bindings: iio/adc: ingenic: add the JZ4760(B) socs to the sadc Documentation (diff)
downloadlinux-6a25893cb0e255ab8888d6a4f40e8d1e9d554ad0.tar.xz
linux-6a25893cb0e255ab8888d6a4f40e8d1e9d554ad0.zip
iio: dac: max5821: convert device register to device managed function
Add a device managed hook, via devm_add_action_or_reset() and max5821_regulator_disable(), to disable voltage regulator on device detach. Replace iio_device_register() by devm_iio_device_register() and remove the max5821_remove() function used to unregister the device and disable the voltage regulator. Remove i2c_set_clientdata() from the probe function, since i2c_get_clientdata() is not used anymore. Remove regulator_disable() calls from the probe function. Signed-off-by: Théo Borém Fabris <theobf@usp.br> Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com> Link: https://lore.kernel.org/r/20210724220159.11998-1-theobf@usp.br Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
-rw-r--r--drivers/iio/dac/max5821.c41
1 files changed, 17 insertions, 24 deletions
diff --git a/drivers/iio/dac/max5821.c b/drivers/iio/dac/max5821.c
index bd6e75699a63..bd0b7f361154 100644
--- a/drivers/iio/dac/max5821.c
+++ b/drivers/iio/dac/max5821.c
@@ -294,6 +294,11 @@ static const struct iio_info max5821_info = {
.write_raw = max5821_write_raw,
};
+static void max5821_regulator_disable(void *reg)
+{
+ regulator_disable(reg);
+}
+
static int max5821_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -306,7 +311,6 @@ static int max5821_probe(struct i2c_client *client,
if (!indio_dev)
return -ENOMEM;
data = iio_priv(indio_dev);
- i2c_set_clientdata(client, indio_dev);
data->client = client;
mutex_init(&data->lock);
@@ -321,21 +325,29 @@ static int max5821_probe(struct i2c_client *client,
ret = PTR_ERR(data->vref_reg);
dev_err(&client->dev,
"Failed to get vref regulator: %d\n", ret);
- goto error_free_reg;
+ return ret;
}
ret = regulator_enable(data->vref_reg);
if (ret) {
dev_err(&client->dev,
"Failed to enable vref regulator: %d\n", ret);
- goto error_free_reg;
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&client->dev, max5821_regulator_disable,
+ data->vref_reg);
+ if (ret) {
+ dev_err(&client->dev,
+ "Failed to add action to managed regulator: %d\n", ret);
+ return ret;
}
ret = regulator_get_voltage(data->vref_reg);
if (ret < 0) {
dev_err(&client->dev,
"Failed to get voltage on regulator: %d\n", ret);
- goto error_disable_reg;
+ return ret;
}
data->vref_mv = ret / 1000;
@@ -346,25 +358,7 @@ static int max5821_probe(struct i2c_client *client,
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &max5821_info;
- return iio_device_register(indio_dev);
-
-error_disable_reg:
- regulator_disable(data->vref_reg);
-
-error_free_reg:
-
- return ret;
-}
-
-static int max5821_remove(struct i2c_client *client)
-{
- struct iio_dev *indio_dev = i2c_get_clientdata(client);
- struct max5821_data *data = iio_priv(indio_dev);
-
- iio_device_unregister(indio_dev);
- regulator_disable(data->vref_reg);
-
- return 0;
+ return devm_iio_device_register(&client->dev, indio_dev);
}
static const struct i2c_device_id max5821_id[] = {
@@ -386,7 +380,6 @@ static struct i2c_driver max5821_driver = {
.pm = &max5821_pm_ops,
},
.probe = max5821_probe,
- .remove = max5821_remove,
.id_table = max5821_id,
};
module_i2c_driver(max5821_driver);