#define ADS1015_DEFAULT_DATA_RATE 4
#define ADS1015_DEFAULT_CHAN 0
+enum {
+ ADS1015,
+ ADS1115,
+};
+
enum ads1015_channels {
ADS1015_AIN0_AIN1 = 0,
ADS1015_AIN0_AIN3,
128, 250, 490, 920, 1600, 2400, 3300, 3300
};
+static const unsigned int ads1115_data_rate[] = {
+ 8, 16, 32, 64, 128, 250, 475, 860
+};
+
static const struct {
int scale;
int uscale;
.shift = 4, \
.endianness = IIO_CPU, \
}, \
+ .datasheet_name = "AIN"#_chan, \
}
#define ADS1015_V_DIFF_CHAN(_chan, _chan2, _addr) { \
.shift = 4, \
.endianness = IIO_CPU, \
}, \
+ .datasheet_name = "AIN"#_chan"-AIN"#_chan2, \
+}
+
+#define ADS1115_V_CHAN(_chan, _addr) { \
+ .type = IIO_VOLTAGE, \
+ .indexed = 1, \
+ .address = _addr, \
+ .channel = _chan, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_SCALE) | \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+ .scan_index = _addr, \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = 16, \
+ .storagebits = 16, \
+ .endianness = IIO_CPU, \
+ }, \
+ .datasheet_name = "AIN"#_chan, \
+}
+
+#define ADS1115_V_DIFF_CHAN(_chan, _chan2, _addr) { \
+ .type = IIO_VOLTAGE, \
+ .differential = 1, \
+ .indexed = 1, \
+ .address = _addr, \
+ .channel = _chan, \
+ .channel2 = _chan2, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_SCALE) | \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+ .scan_index = _addr, \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = 16, \
+ .storagebits = 16, \
+ .endianness = IIO_CPU, \
+ }, \
+ .datasheet_name = "AIN"#_chan"-AIN"#_chan2, \
}
struct ads1015_data {
*/
struct mutex lock;
struct ads1015_channel_data channel_data[ADS1015_CHANNELS];
+
+ unsigned int *data_rate;
};
static bool ads1015_is_writeable_reg(struct device *dev, unsigned int reg)
IIO_CHAN_SOFT_TIMESTAMP(ADS1015_TIMESTAMP),
};
+static const struct iio_chan_spec ads1115_channels[] = {
+ ADS1115_V_DIFF_CHAN(0, 1, ADS1015_AIN0_AIN1),
+ ADS1115_V_DIFF_CHAN(0, 3, ADS1015_AIN0_AIN3),
+ ADS1115_V_DIFF_CHAN(1, 3, ADS1015_AIN1_AIN3),
+ ADS1115_V_DIFF_CHAN(2, 3, ADS1015_AIN2_AIN3),
+ ADS1115_V_CHAN(0, ADS1015_AIN0),
+ ADS1115_V_CHAN(1, ADS1015_AIN1),
+ ADS1115_V_CHAN(2, ADS1015_AIN2),
+ ADS1115_V_CHAN(3, ADS1015_AIN3),
+ IIO_CHAN_SOFT_TIMESTAMP(ADS1015_TIMESTAMP),
+};
+
static int ads1015_set_power_state(struct ads1015_data *data, bool on)
{
int ret;
return ret;
if (change) {
- conv_time = DIV_ROUND_UP(USEC_PER_SEC, ads1015_data_rate[dr]);
+ conv_time = DIV_ROUND_UP(USEC_PER_SEC, data->data_rate[dr]);
usleep_range(conv_time, conv_time + 1);
}
buf[0] = res;
mutex_unlock(&data->lock);
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
err:
iio_trigger_notify_done(indio_dev->trig);
int i, ret, rindex = -1;
for (i = 0; i < ARRAY_SIZE(ads1015_data_rate); i++)
- if (ads1015_data_rate[i] == rate) {
+ if (data->data_rate[i] == rate) {
rindex = i;
break;
}
mutex_lock(&indio_dev->mlock);
mutex_lock(&data->lock);
switch (mask) {
- case IIO_CHAN_INFO_RAW:
+ case IIO_CHAN_INFO_RAW: {
+ int shift = chan->scan_type.shift;
+
if (iio_buffer_enabled(indio_dev)) {
ret = -EBUSY;
break;
break;
}
- /* 12 bit res, D0 is bit 4 in conversion register */
- *val = sign_extend32(*val >> 4, 11);
+ *val = sign_extend32(*val >> shift, 15 - shift);
ret = ads1015_set_power_state(data, false);
if (ret < 0)
ret = IIO_VAL_INT;
break;
+ }
case IIO_CHAN_INFO_SCALE:
idx = data->channel_data[chan->address].pga;
*val = ads1015_scale[idx].scale;
break;
case IIO_CHAN_INFO_SAMP_FREQ:
idx = data->channel_data[chan->address].data_rate;
- *val = ads1015_data_rate[idx];
+ *val = data->data_rate[idx];
ret = IIO_VAL_INT;
break;
default:
};
static IIO_CONST_ATTR(scale_available, "3 2 1 0.5 0.25 0.125");
-static IIO_CONST_ATTR(sampling_frequency_available,
- "128 250 490 920 1600 2400 3300");
+
+static IIO_CONST_ATTR_NAMED(ads1015_sampling_frequency_available,
+ sampling_frequency_available, "128 250 490 920 1600 2400 3300");
+static IIO_CONST_ATTR_NAMED(ads1115_sampling_frequency_available,
+ sampling_frequency_available, "8 16 32 64 128 250 475 860");
static struct attribute *ads1015_attributes[] = {
&iio_const_attr_scale_available.dev_attr.attr,
- &iio_const_attr_sampling_frequency_available.dev_attr.attr,
+ &iio_const_attr_ads1015_sampling_frequency_available.dev_attr.attr,
NULL,
};
.attrs = ads1015_attributes,
};
-static const struct iio_info ads1015_info = {
+static struct attribute *ads1115_attributes[] = {
+ &iio_const_attr_scale_available.dev_attr.attr,
+ &iio_const_attr_ads1115_sampling_frequency_available.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group ads1115_attribute_group = {
+ .attrs = ads1115_attributes,
+};
+
+static struct iio_info ads1015_info = {
+ .driver_module = THIS_MODULE,
+ .read_raw = ads1015_read_raw,
+ .write_raw = ads1015_write_raw,
+ .attrs = &ads1015_attribute_group,
+};
+
+static struct iio_info ads1115_info = {
.driver_module = THIS_MODULE,
.read_raw = ads1015_read_raw,
.write_raw = ads1015_write_raw,
- .attrs = &ads1015_attribute_group,
+ .attrs = &ads1115_attribute_group,
};
#ifdef CONFIG_OF
mutex_init(&data->lock);
indio_dev->dev.parent = &client->dev;
- indio_dev->info = &ads1015_info;
+ indio_dev->dev.of_node = client->dev.of_node;
indio_dev->name = ADS1015_DRV_NAME;
- indio_dev->channels = ads1015_channels;
- indio_dev->num_channels = ARRAY_SIZE(ads1015_channels);
indio_dev->modes = INDIO_DIRECT_MODE;
+ switch (id->driver_data) {
+ case ADS1015:
+ indio_dev->channels = ads1015_channels;
+ indio_dev->num_channels = ARRAY_SIZE(ads1015_channels);
+ indio_dev->info = &ads1015_info;
+ data->data_rate = (unsigned int *) &ads1015_data_rate;
+ break;
+ case ADS1115:
+ indio_dev->channels = ads1115_channels;
+ indio_dev->num_channels = ARRAY_SIZE(ads1115_channels);
+ indio_dev->info = &ads1115_info;
+ data->data_rate = (unsigned int *) &ads1115_data_rate;
+ break;
+ }
+
/* we need to keep this ABI the same as used by hwmon ADS1015 driver */
ads1015_get_channels_config(client);
};
static const struct i2c_device_id ads1015_id[] = {
- {"ads1015", 0},
+ {"ads1015", ADS1015},
+ {"ads1115", ADS1115},
{}
};
MODULE_DEVICE_TABLE(i2c, ads1015_id);
projects / karo-tx-linux.git / blobdiff