On 09/12/15 11:40, Adriana Reus wrote:
> A bit of refactoring for better readability.
> Moved and slightly reorganized all the activity necessary for reading als and
> proximity into a different function. This way the switch in read raw becomes
> clearer and more compact.
>
> Signed-off-by: Adriana Reus <adriana.reus@xxxxxxxxx>
Sensible tidy up. Will take once the others are sorted.
> ---
> drivers/iio/light/us5182d.c | 155 ++++++++++++++++++++++----------------------
> 1 file changed, 78 insertions(+), 77 deletions(-)
>
> diff --git a/drivers/iio/light/us5182d.c b/drivers/iio/light/us5182d.c
> index 033f5cf..53d161d 100644
> --- a/drivers/iio/light/us5182d.c
> +++ b/drivers/iio/light/us5182d.c
> @@ -203,23 +203,6 @@ static const struct iio_chan_spec us5182d_channels[] = {
> }
> };
>
> -static int us5182d_get_als(struct us5182d_data *data)
> -{
> - int ret;
> - unsigned long result;
> -
> - ret = i2c_smbus_read_word_data(data->client,
> - US5182D_REG_ADL);
> - if (ret < 0)
> - return ret;
> -
> - result = ret * data->ga / US5182D_GA_RESOLUTION;
> - if (result > 0xffff)
> - result = 0xffff;
> -
> - return result;
> -}
> -
> static int us5182d_oneshot_en(struct us5182d_data *data)
> {
> int ret;
> @@ -324,6 +307,39 @@ static int us5182d_px_enable(struct us5182d_data *data)
> return 0;
> }
>
> +static int us5182d_get_als(struct us5182d_data *data)
> +{
> + int ret;
> + unsigned long result;
> +
> + ret = us5182d_als_enable(data);
> + if (ret < 0)
> + return ret;
> +
> + ret = i2c_smbus_read_word_data(data->client,
> + US5182D_REG_ADL);
> + if (ret < 0)
> + return ret;
> +
> + result = ret * data->ga / US5182D_GA_RESOLUTION;
> + if (result > 0xffff)
> + result = 0xffff;
> +
> + return result;
> +}
> +
> +static int us5182d_get_px(struct us5182d_data *data)
> +{
> + int ret;
> +
> + ret = us5182d_px_enable(data);
> + if (ret < 0)
> + return ret;
> +
> + return i2c_smbus_read_word_data(data->client,
> + US5182D_REG_PDL);
> +}
> +
> static int us5182d_shutdown_en(struct us5182d_data *data, u8 state)
> {
> int ret;
> @@ -370,6 +386,46 @@ static int us5182d_set_power_state(struct us5182d_data *data, bool on)
> return ret;
> }
>
> +static int us5182d_read_value(struct us5182d_data *data,
> + struct iio_chan_spec const *chan)
> +{
> + int ret, value;
> +
> + mutex_lock(&data->lock);
> +
> + if (data->power_mode == US5182D_ONESHOT) {
> + ret = us5182d_oneshot_en(data);
> + if (ret < 0)
> + goto out_err;
> + }
> +
> + ret = us5182d_set_power_state(data, true);
> + if (ret < 0)
> + goto out_err;
> +
> + if (chan->type == IIO_LIGHT)
> + ret = us5182d_get_als(data);
> + else
> + ret = us5182d_get_px(data);
> + if (ret < 0)
> + goto out_poweroff;
> +
> + value = ret;
> +
> + ret = us5182d_set_power_state(data, false);
> + if (ret < 0)
> + goto out_err;
> +
> + mutex_unlock(&data->lock);
> + return value;
> +
> +out_poweroff:
> + us5182d_set_power_state(data, false);
> +out_err:
> + mutex_unlock(&data->lock);
> + return ret;
> +}
> +
> static int us5182d_read_raw(struct iio_dev *indio_dev,
> struct iio_chan_spec const *chan, int *val,
> int *val2, long mask)
> @@ -379,76 +435,21 @@ static int us5182d_read_raw(struct iio_dev *indio_dev,
>
> switch (mask) {
> case IIO_CHAN_INFO_RAW:
> - switch (chan->type) {
> - case IIO_LIGHT:
> - mutex_lock(&data->lock);
> - if (data->power_mode == US5182D_ONESHOT) {
> - ret = us5182d_oneshot_en(data);
> - if (ret < 0)
> - goto out_err;
> - }
> - ret = us5182d_set_power_state(data, true);
> - if (ret < 0)
> - goto out_err;
> - ret = us5182d_als_enable(data);
> - if (ret < 0)
> - goto out_poweroff;
> - ret = us5182d_get_als(data);
> - if (ret < 0)
> - goto out_poweroff;
> - *val = ret;
> - ret = us5182d_set_power_state(data, false);
> - if (ret < 0)
> - goto out_err;
> - mutex_unlock(&data->lock);
> - return IIO_VAL_INT;
> - case IIO_PROXIMITY:
> - mutex_lock(&data->lock);
> - if (data->power_mode == US5182D_ONESHOT) {
> - ret = us5182d_oneshot_en(data);
> - if (ret < 0)
> - goto out_err;
> - }
> - ret = us5182d_set_power_state(data, true);
> - if (ret < 0)
> - goto out_err;
> - ret = us5182d_px_enable(data);
> - if (ret < 0)
> - goto out_poweroff;
> - ret = i2c_smbus_read_word_data(data->client,
> - US5182D_REG_PDL);
> - if (ret < 0)
> - goto out_poweroff;
> - *val = ret;
> - ret = us5182d_set_power_state(data, false);
> - if (ret < 0)
> - goto out_err;
> - mutex_unlock(&data->lock);
> - return IIO_VAL_INT;
> - default:
> - return -EINVAL;
> - }
> -
> + ret = us5182d_read_value(data, chan);
> + if (ret < 0)
> + return ret;
> + *val = ret;
> + return IIO_VAL_INT;
> case IIO_CHAN_INFO_SCALE:
> ret = i2c_smbus_read_byte_data(data->client, US5182D_REG_CFG1);
> if (ret < 0)
> return ret;
> -
> *val = 0;
> *val2 = us5182d_scales[ret & US5182D_AGAIN_MASK];
> -
> return IIO_VAL_INT_PLUS_MICRO;
> default:
> return -EINVAL;
> }
> -
> - return -EINVAL;
> -
> -out_poweroff:
> - us5182d_set_power_state(data, false);
> -out_err:
> - mutex_unlock(&data->lock);
> - return ret;
> }
>
> /**
>
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