On Thu, 25 Feb 2021 23:14:44 +0300 Ivan Mikhaylov <[email protected]> wrote:
> Add the proximity rate optional option and handling of it for > vishay vcnl3020. > > Signed-off-by: Ivan Mikhaylov <[email protected]> Applied to the togreg branch of iio.git and pushed out as testing for the autobuilders to see if we missed anything. Thanks, Jonathan > --- > drivers/iio/proximity/vcnl3020.c | 97 +++++++++++++++++++++++++++++++- > 1 file changed, 96 insertions(+), 1 deletion(-) > > diff --git a/drivers/iio/proximity/vcnl3020.c > b/drivers/iio/proximity/vcnl3020.c > index 37264f801ad0..43817f6b3086 100644 > --- a/drivers/iio/proximity/vcnl3020.c > +++ b/drivers/iio/proximity/vcnl3020.c > @@ -40,6 +40,17 @@ > #define VCNL_ON_DEMAND_TIMEOUT_US 100000 > #define VCNL_POLL_US 20000 > > +static const int vcnl3020_prox_sampling_frequency[][2] = { > + {1, 950000}, > + {3, 906250}, > + {7, 812500}, > + {16, 625000}, > + {31, 250000}, > + {62, 500000}, > + {125, 0}, > + {250, 0}, > +}; > + > /** > * struct vcnl3020_data - vcnl3020 specific data. > * @regmap: device register map. > @@ -165,10 +176,51 @@ static int vcnl3020_measure_proximity(struct > vcnl3020_data *data, int *val) > return rc; > } > > +static int vcnl3020_read_proxy_samp_freq(struct vcnl3020_data *data, int > *val, > + int *val2) > +{ > + int rc; > + unsigned int prox_rate; > + > + rc = regmap_read(data->regmap, VCNL_PROXIMITY_RATE, &prox_rate); > + if (rc) > + return rc; > + > + if (prox_rate >= ARRAY_SIZE(vcnl3020_prox_sampling_frequency)) > + return -EINVAL; > + > + *val = vcnl3020_prox_sampling_frequency[prox_rate][0]; > + *val2 = vcnl3020_prox_sampling_frequency[prox_rate][1]; > + > + return 0; > +} > + > +static int vcnl3020_write_proxy_samp_freq(struct vcnl3020_data *data, int > val, > + int val2) > +{ > + unsigned int i; > + int index = -1; > + > + for (i = 0; i < ARRAY_SIZE(vcnl3020_prox_sampling_frequency); i++) { > + if (val == vcnl3020_prox_sampling_frequency[i][0] && > + val2 == vcnl3020_prox_sampling_frequency[i][1]) { > + index = i; > + break; > + } > + } > + > + if (index < 0) > + return -EINVAL; > + > + return regmap_write(data->regmap, VCNL_PROXIMITY_RATE, index); > +} > + > static const struct iio_chan_spec vcnl3020_channels[] = { > { > .type = IIO_PROXIMITY, > - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), > + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | > + BIT(IIO_CHAN_INFO_SAMP_FREQ), > + .info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ), > }, > }; > > @@ -185,6 +237,47 @@ static int vcnl3020_read_raw(struct iio_dev *indio_dev, > if (rc) > return rc; > return IIO_VAL_INT; > + case IIO_CHAN_INFO_SAMP_FREQ: > + rc = vcnl3020_read_proxy_samp_freq(data, val, val2); > + if (rc < 0) > + return rc; > + return IIO_VAL_INT_PLUS_MICRO; > + default: > + return -EINVAL; > + } > +} > + > +static int vcnl3020_write_raw(struct iio_dev *indio_dev, > + struct iio_chan_spec const *chan, > + int val, int val2, long mask) > +{ > + int rc; > + struct vcnl3020_data *data = iio_priv(indio_dev); > + > + switch (mask) { > + case IIO_CHAN_INFO_SAMP_FREQ: > + rc = iio_device_claim_direct_mode(indio_dev); > + if (rc) > + return rc; > + rc = vcnl3020_write_proxy_samp_freq(data, val, val2); > + iio_device_release_direct_mode(indio_dev); > + return rc; > + default: > + return -EINVAL; > + } > +} > + > +static int vcnl3020_read_avail(struct iio_dev *indio_dev, > + struct iio_chan_spec const *chan, > + const int **vals, int *type, int *length, > + long mask) > +{ > + switch (mask) { > + case IIO_CHAN_INFO_SAMP_FREQ: > + *vals = (int *)vcnl3020_prox_sampling_frequency; > + *type = IIO_VAL_INT_PLUS_MICRO; > + *length = 2 * ARRAY_SIZE(vcnl3020_prox_sampling_frequency); > + return IIO_AVAIL_LIST; > default: > return -EINVAL; > } > @@ -192,6 +285,8 @@ static int vcnl3020_read_raw(struct iio_dev *indio_dev, > > static const struct iio_info vcnl3020_info = { > .read_raw = vcnl3020_read_raw, > + .write_raw = vcnl3020_write_raw, > + .read_avail = vcnl3020_read_avail, > }; > > static const struct regmap_config vcnl3020_regmap_config = {
