diff options
Diffstat (limited to 'drivers/staging/iio/cdc/ad7150.c')
| -rw-r--r-- | drivers/staging/iio/cdc/ad7150.c | 58 |
1 files changed, 22 insertions, 36 deletions
diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c index e075244c602b..f4954d85553e 100644 --- a/drivers/staging/iio/cdc/ad7150.c +++ b/drivers/staging/iio/cdc/ad7150.c @@ -46,6 +46,9 @@ #define AD7150_SN0 22 #define AD7150_ID 23 +/* AD7150 masks */ +#define AD7150_THRESHTYPE_MSK GENMASK(6, 5) + /** * struct ad7150_chip_info - instance specific chip data * @client: i2c client for this device @@ -138,7 +141,7 @@ static int ad7150_read_event_config(struct iio_dev *indio_dev, if (ret < 0) return ret; - threshtype = (ret >> 5) & 0x03; + threshtype = FIELD_GET(AD7150_THRESHTYPE_MSK, ret); /*check if threshold mode is fixed or adaptive*/ thrfixed = FIELD_GET(AD7150_CFG_FIX, ret); @@ -162,7 +165,8 @@ static int ad7150_read_event_config(struct iio_dev *indio_dev, return -EINVAL; } -/* lock should be held */ +/* state_lock should be held to ensure consistent state*/ + static int ad7150_write_event_params(struct iio_dev *indio_dev, unsigned int chan, enum iio_event_type type, @@ -201,16 +205,11 @@ static int ad7150_write_event_params(struct iio_dev *indio_dev, ret = i2c_smbus_write_byte_data(chip->client, ad7150_addresses[chan][4], sens); - if (ret < 0) + if (ret) return ret; - - ret = i2c_smbus_write_byte_data(chip->client, + return i2c_smbus_write_byte_data(chip->client, ad7150_addresses[chan][5], timeout); - if (ret < 0) - return ret; - - return 0; } static int ad7150_write_event_config(struct iio_dev *indio_dev, @@ -353,8 +352,8 @@ static ssize_t ad7150_show_timeout(struct device *dev, /* use the event code for consistency reasons */ int chan = IIO_EVENT_CODE_EXTRACT_CHAN(this_attr->address); - int rising = !!(IIO_EVENT_CODE_EXTRACT_DIR(this_attr->address) - == IIO_EV_DIR_RISING); + int rising = (IIO_EVENT_CODE_EXTRACT_DIR(this_attr->address) + == IIO_EV_DIR_RISING) ? 1 : 0; switch (IIO_EVENT_CODE_EXTRACT_TYPE(this_attr->address)) { case IIO_EV_TYPE_MAG_ADAPTIVE: @@ -468,30 +467,21 @@ static const struct iio_event_spec ad7150_events[] = { }, }; +#define AD7150_CAPACITANCE_CHAN(_chan) { \ + .type = IIO_CAPACITANCE, \ + .indexed = 1, \ + .channel = _chan, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_AVERAGE_RAW), \ + .event_spec = ad7150_events, \ + .num_event_specs = ARRAY_SIZE(ad7150_events), \ + } + static const struct iio_chan_spec ad7150_channels[] = { - { - .type = IIO_CAPACITANCE, - .indexed = 1, - .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_AVERAGE_RAW), - .event_spec = ad7150_events, - .num_event_specs = ARRAY_SIZE(ad7150_events), - }, { - .type = IIO_CAPACITANCE, - .indexed = 1, - .channel = 1, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_AVERAGE_RAW), - .event_spec = ad7150_events, - .num_event_specs = ARRAY_SIZE(ad7150_events), - }, + AD7150_CAPACITANCE_CHAN(0), + AD7150_CAPACITANCE_CHAN(1) }; -/* - * threshold events - */ - static irqreturn_t ad7150_event_handler(int irq, void *private) { struct iio_dev *indio_dev = private; @@ -580,10 +570,6 @@ static const struct iio_info ad7150_info = { .write_event_value = &ad7150_write_event_value, }; -/* - * device probe and remove - */ - static int ad7150_probe(struct i2c_client *client, const struct i2c_device_id *id) { |