diff options
Diffstat (limited to 'drivers/iio/adc/ad7793.c')
-rw-r--r-- | drivers/iio/adc/ad7793.c | 55 |
1 files changed, 37 insertions, 18 deletions
diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c index 5592ae573e6b..7005bde50a76 100644 --- a/drivers/iio/adc/ad7793.c +++ b/drivers/iio/adc/ad7793.c @@ -354,29 +354,28 @@ static IIO_CONST_ATTR_SAMP_FREQ_AVAIL( static IIO_CONST_ATTR_NAMED(sampling_frequency_available_ad7797, sampling_frequency_available, "123 62 50 33 17 16 12 10 8 6 4"); -static ssize_t ad7793_show_scale_available(struct device *dev, - struct device_attribute *attr, char *buf) +static int ad7793_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int **vals, int *type, int *length, + long mask) { - struct iio_dev *indio_dev = dev_to_iio_dev(dev); struct ad7793_state *st = iio_priv(indio_dev); - int i, len = 0; - for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++) - len += sprintf(buf + len, "%d.%09u ", st->scale_avail[i][0], - st->scale_avail[i][1]); - - len += sprintf(buf + len, "\n"); + switch (mask) { + case IIO_CHAN_INFO_SCALE: + *vals = (int *)st->scale_avail; + *type = IIO_VAL_INT_PLUS_NANO; + /* Values are stored in a 2D matrix */ + *length = ARRAY_SIZE(st->scale_avail) * 2; - return len; + return IIO_AVAIL_LIST; + default: + return -EINVAL; + } } -static IIO_DEVICE_ATTR_NAMED(in_m_in_scale_available, - in_voltage-voltage_scale_available, S_IRUGO, - ad7793_show_scale_available, NULL, 0); - static struct attribute *ad7793_attributes[] = { &iio_const_attr_sampling_frequency_available.dev_attr.attr, - &iio_dev_attr_in_m_in_scale_available.dev_attr.attr, NULL }; @@ -534,6 +533,7 @@ static const struct iio_info ad7793_info = { .read_raw = &ad7793_read_raw, .write_raw = &ad7793_write_raw, .write_raw_get_fmt = &ad7793_write_raw_get_fmt, + .read_avail = ad7793_read_avail, .attrs = &ad7793_attribute_group, .validate_trigger = ad_sd_validate_trigger, }; @@ -547,7 +547,7 @@ static const struct iio_info ad7797_info = { }; #define __AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \ - _storagebits, _shift, _extend_name, _type, _mask_all) \ + _storagebits, _shift, _extend_name, _type, _mask_type_av, _mask_all) \ { \ .type = (_type), \ .differential = (_channel2 == -1 ? 0 : 1), \ @@ -559,6 +559,7 @@ static const struct iio_info ad7797_info = { .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ BIT(IIO_CHAN_INFO_OFFSET), \ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .info_mask_shared_by_type_available = (_mask_type_av), \ .info_mask_shared_by_all = _mask_all, \ .scan_index = (_si), \ .scan_type = { \ @@ -574,23 +575,41 @@ static const struct iio_info ad7797_info = { _storagebits, _shift) \ __AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \ _storagebits, _shift, NULL, IIO_VOLTAGE, \ + BIT(IIO_CHAN_INFO_SCALE), \ BIT(IIO_CHAN_INFO_SAMP_FREQ)) #define AD7793_SHORTED_CHANNEL(_si, _channel, _address, _bits, \ _storagebits, _shift) \ __AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \ _storagebits, _shift, "shorted", IIO_VOLTAGE, \ + BIT(IIO_CHAN_INFO_SCALE), \ BIT(IIO_CHAN_INFO_SAMP_FREQ)) #define AD7793_TEMP_CHANNEL(_si, _address, _bits, _storagebits, _shift) \ __AD7793_CHANNEL(_si, 0, -1, _address, _bits, \ _storagebits, _shift, NULL, IIO_TEMP, \ + 0, \ BIT(IIO_CHAN_INFO_SAMP_FREQ)) #define AD7793_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits, \ _shift) \ __AD7793_CHANNEL(_si, _channel, -1, _address, _bits, \ _storagebits, _shift, "supply", IIO_VOLTAGE, \ + 0, \ + BIT(IIO_CHAN_INFO_SAMP_FREQ)) + +#define AD7797_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \ + _storagebits, _shift) \ + __AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \ + _storagebits, _shift, NULL, IIO_VOLTAGE, \ + 0, \ + BIT(IIO_CHAN_INFO_SAMP_FREQ)) + +#define AD7797_SHORTED_CHANNEL(_si, _channel, _address, _bits, \ + _storagebits, _shift) \ + __AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \ + _storagebits, _shift, "shorted", IIO_VOLTAGE, \ + 0, \ BIT(IIO_CHAN_INFO_SAMP_FREQ)) #define DECLARE_AD7793_CHANNELS(_name, _b, _sb, _s) \ @@ -620,8 +639,8 @@ const struct iio_chan_spec _name##_channels[] = { \ #define DECLARE_AD7797_CHANNELS(_name, _b, _sb) \ const struct iio_chan_spec _name##_channels[] = { \ - AD7793_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \ - AD7793_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \ + AD7797_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \ + AD7797_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \ AD7793_TEMP_CHANNEL(2, AD7793_CH_TEMP, (_b), (_sb), 0), \ AD7793_SUPPLY_CHANNEL(3, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \ IIO_CHAN_SOFT_TIMESTAMP(4), \ |