iio: potentiometer: tpl0102: switch to using pointer to chip config

More concise to have a pointer to tpl0102_cfg struct in the iio_priv
data than an integer to an index of an array.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Reviewed-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/potentiometer/tpl0102.c b/drivers/iio/potentiometer/tpl0102.c
index ca1cce58fe2036586892beccd5932aa621659736..8e8adabe672b5a22ad5fd2836ffa222ebbad1e36 100644 (file)
--- a/drivers/iio/potentiometer/tpl0102.c
+++ b/drivers/iio/potentiometer/tpl0102.c
@@ -37,7 +37,7 @@ static const struct tpl0102_cfg tpl0102_cfg[] = {
 
 struct tpl0102_data {
        struct regmap *regmap;
-       unsigned long devid;
+       const struct tpl0102_cfg *cfg;
 };
 
 static const struct regmap_config tpl0102_regmap_config = {
@@ -72,8 +72,8 @@ static int tpl0102_read_raw(struct iio_dev *indio_dev,
                return ret ? ret : IIO_VAL_INT;
        }
        case IIO_CHAN_INFO_SCALE:
-               *val = 1000 * tpl0102_cfg[data->devid].kohms;
-               *val2 = tpl0102_cfg[data->devid].max_pos;
+               *val = 1000 * data->cfg->kohms;
+               *val2 = data->cfg->max_pos;
                return IIO_VAL_FRACTIONAL;
        }
 
@@ -89,7 +89,7 @@ static int tpl0102_write_raw(struct iio_dev *indio_dev,
        if (mask != IIO_CHAN_INFO_RAW)
                return -EINVAL;
 
-       if (val >= tpl0102_cfg[data->devid].max_pos || val < 0)
+       if (val >= data->cfg->max_pos || val < 0)
                return -EINVAL;
 
        return regmap_write(data->regmap, chan->channel, val);
@@ -113,7 +113,7 @@ static int tpl0102_probe(struct i2c_client *client,
        data = iio_priv(indio_dev);
        i2c_set_clientdata(client, indio_dev);
 
-       data->devid = id->driver_data;
+       data->cfg = &tpl0102_cfg[id->driver_data];
        data->regmap = devm_regmap_init_i2c(client, &tpl0102_regmap_config);
        if (IS_ERR(data->regmap)) {
                dev_err(dev, "regmap initialization failed\n");
@@ -123,7 +123,7 @@ static int tpl0102_probe(struct i2c_client *client,
        indio_dev->dev.parent = dev;
        indio_dev->info = &tpl0102_info;
        indio_dev->channels = tpl0102_channels;
-       indio_dev->num_channels = tpl0102_cfg[data->devid].wipers;
+       indio_dev->num_channels = data->cfg->wipers;
        indio_dev->name = client->name;
 
        return devm_iio_device_register(dev, indio_dev);