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path: root/drivers/staging/iio/adc/ad799x_core.c
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Diffstat (limited to 'drivers/staging/iio/adc/ad799x_core.c')
-rw-r--r--drivers/staging/iio/adc/ad799x_core.c417
1 files changed, 72 insertions, 345 deletions
diff --git a/drivers/staging/iio/adc/ad799x_core.c b/drivers/staging/iio/adc/ad799x_core.c
index 077eedbd0a0..8dc97b36e05 100644
--- a/drivers/staging/iio/adc/ad799x_core.c
+++ b/drivers/staging/iio/adc/ad799x_core.c
@@ -48,13 +48,13 @@ static int ad799x_i2c_read16(struct ad799x_state *st, u8 reg, u16 *data)
struct i2c_client *client = st->client;
int ret = 0;
- ret = i2c_smbus_read_word_data(client, reg);
+ ret = i2c_smbus_read_word_swapped(client, reg);
if (ret < 0) {
dev_err(&client->dev, "I2C read error\n");
return ret;
}
- *data = swab16((u16)ret);
+ *data = (u16)ret;
return 0;
}
@@ -80,7 +80,7 @@ static int ad799x_i2c_write16(struct ad799x_state *st, u8 reg, u16 data)
struct i2c_client *client = st->client;
int ret = 0;
- ret = i2c_smbus_write_word_data(client, reg, swab16(data));
+ ret = i2c_smbus_write_word_swapped(client, reg, data);
if (ret < 0)
dev_err(&client->dev, "I2C write error\n");
@@ -104,6 +104,13 @@ static int ad7997_8_update_scan_mode(struct iio_dev *indio_dev,
{
struct ad799x_state *st = iio_priv(indio_dev);
+ kfree(st->rx_buf);
+ st->rx_buf = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
+ if (!st->rx_buf)
+ return -ENOMEM;
+
+ st->transfer_size = bitmap_weight(scan_mask, indio_dev->masklength) * 2;
+
switch (st->id) {
case ad7997:
case ad7998:
@@ -460,395 +467,114 @@ static const struct iio_info ad7993_4_7_8_info = {
#define AD799X_EV_MASK (IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING) | \
IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING))
+#define AD799X_CHANNEL(_index, _realbits, _evmask) { \
+ .type = IIO_VOLTAGE, \
+ .indexed = 1, \
+ .channel = (_index), \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ .scan_index = (_index), \
+ .scan_type = IIO_ST('u', _realbits, 16, 12 - (_realbits)), \
+ .event_mask = (_evmask), \
+}
+
static const struct ad799x_chip_info ad799x_chip_info_tbl[] = {
[ad7991] = {
.channel = {
- [0] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 0,
- .scan_type = IIO_ST('u', 12, 16, 0),
- },
- [1] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 1,
- .scan_type = IIO_ST('u', 12, 16, 0),
- },
- [2] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 2,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 2,
- .scan_type = IIO_ST('u', 12, 16, 0),
- },
- [3] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 3,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 3,
- .scan_type = IIO_ST('u', 12, 16, 0),
- },
- [4] = IIO_CHAN_SOFT_TIMESTAMP(4),
+ AD799X_CHANNEL(0, 12, 0),
+ AD799X_CHANNEL(1, 12, 0),
+ AD799X_CHANNEL(2, 12, 0),
+ AD799X_CHANNEL(3, 12, 0),
+ IIO_CHAN_SOFT_TIMESTAMP(4),
},
.num_channels = 5,
- .int_vref_mv = 4096,
.info = &ad7991_info,
},
[ad7995] = {
.channel = {
- [0] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 0,
- .scan_type = IIO_ST('u', 10, 16, 2),
- },
- [1] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 1,
- .scan_type = IIO_ST('u', 10, 16, 2),
- },
- [2] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 2,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 2,
- .scan_type = IIO_ST('u', 10, 16, 2),
- },
- [3] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 3,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 3,
- .scan_type = IIO_ST('u', 10, 16, 2),
- },
- [4] = IIO_CHAN_SOFT_TIMESTAMP(4),
+ AD799X_CHANNEL(0, 10, 0),
+ AD799X_CHANNEL(1, 10, 0),
+ AD799X_CHANNEL(2, 10, 0),
+ AD799X_CHANNEL(3, 10, 0),
+ IIO_CHAN_SOFT_TIMESTAMP(4),
},
.num_channels = 5,
- .int_vref_mv = 1024,
.info = &ad7991_info,
},
[ad7999] = {
.channel = {
- [0] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 0,
- .scan_type = IIO_ST('u', 8, 16, 4),
- },
- [1] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 1,
- .scan_type = IIO_ST('u', 8, 16, 4),
- },
- [2] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 2,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 2,
- .scan_type = IIO_ST('u', 8, 16, 4),
- },
- [3] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 3,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 3,
- .scan_type = IIO_ST('u', 8, 16, 4),
- },
- [4] = IIO_CHAN_SOFT_TIMESTAMP(4),
+ AD799X_CHANNEL(0, 8, 0),
+ AD799X_CHANNEL(1, 8, 0),
+ AD799X_CHANNEL(2, 8, 0),
+ AD799X_CHANNEL(3, 8, 0),
+ IIO_CHAN_SOFT_TIMESTAMP(4),
},
.num_channels = 5,
- .int_vref_mv = 1024,
.info = &ad7991_info,
},
[ad7992] = {
.channel = {
- [0] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 0,
- .scan_type = IIO_ST('u', 12, 16, 0),
- .event_mask = AD799X_EV_MASK,
- },
- [1] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 1,
- .scan_type = IIO_ST('u', 12, 16, 0),
- .event_mask = AD799X_EV_MASK,
- },
- [2] = IIO_CHAN_SOFT_TIMESTAMP(2),
+ AD799X_CHANNEL(0, 12, AD799X_EV_MASK),
+ AD799X_CHANNEL(1, 12, AD799X_EV_MASK),
+ IIO_CHAN_SOFT_TIMESTAMP(3),
},
.num_channels = 3,
- .int_vref_mv = 4096,
.default_config = AD7998_ALERT_EN,
.info = &ad7992_info,
},
[ad7993] = {
.channel = {
- [0] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 0,
- .scan_type = IIO_ST('u', 10, 16, 2),
- .event_mask = AD799X_EV_MASK,
- },
- [1] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .scan_index = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_type = IIO_ST('u', 10, 16, 2),
- .event_mask = AD799X_EV_MASK,
- },
- [2] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 2,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 2,
- .scan_type = IIO_ST('u', 10, 16, 2),
- .event_mask = AD799X_EV_MASK,
- },
- [3] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 3,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 3,
- .scan_type = IIO_ST('u', 10, 16, 2),
- .event_mask = AD799X_EV_MASK,
- },
- [4] = IIO_CHAN_SOFT_TIMESTAMP(4),
+ AD799X_CHANNEL(0, 10, AD799X_EV_MASK),
+ AD799X_CHANNEL(1, 10, AD799X_EV_MASK),
+ AD799X_CHANNEL(2, 10, AD799X_EV_MASK),
+ AD799X_CHANNEL(3, 10, AD799X_EV_MASK),
+ IIO_CHAN_SOFT_TIMESTAMP(4),
},
.num_channels = 5,
- .int_vref_mv = 1024,
.default_config = AD7998_ALERT_EN,
.info = &ad7993_4_7_8_info,
},
[ad7994] = {
.channel = {
- [0] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 0,
- .scan_type = IIO_ST('u', 12, 16, 0),
- .event_mask = AD799X_EV_MASK,
- },
- [1] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 1,
- .scan_type = IIO_ST('u', 12, 16, 0),
- .event_mask = AD799X_EV_MASK,
- },
- [2] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 2,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 2,
- .scan_type = IIO_ST('u', 12, 16, 0),
- .event_mask = AD799X_EV_MASK,
- },
- [3] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 3,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 3,
- .scan_type = IIO_ST('u', 12, 16, 0),
- .event_mask = AD799X_EV_MASK,
- },
- [4] = IIO_CHAN_SOFT_TIMESTAMP(4),
+ AD799X_CHANNEL(0, 12, AD799X_EV_MASK),
+ AD799X_CHANNEL(1, 12, AD799X_EV_MASK),
+ AD799X_CHANNEL(2, 12, AD799X_EV_MASK),
+ AD799X_CHANNEL(3, 12, AD799X_EV_MASK),
+ IIO_CHAN_SOFT_TIMESTAMP(4),
},
.num_channels = 5,
- .int_vref_mv = 4096,
.default_config = AD7998_ALERT_EN,
.info = &ad7993_4_7_8_info,
},
[ad7997] = {
.channel = {
- [0] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 0,
- .scan_type = IIO_ST('u', 10, 16, 2),
- .event_mask = AD799X_EV_MASK,
- },
- [1] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 1,
- .scan_type = IIO_ST('u', 10, 16, 2),
- .event_mask = AD799X_EV_MASK,
- },
- [2] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 2,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 2,
- .scan_type = IIO_ST('u', 10, 16, 2),
- .event_mask = AD799X_EV_MASK,
- },
- [3] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 3,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 3,
- .scan_type = IIO_ST('u', 10, 16, 2),
- .event_mask = AD799X_EV_MASK,
- },
- [4] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 4,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 4,
- .scan_type = IIO_ST('u', 10, 16, 2),
- },
- [5] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 5,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 5,
- .scan_type = IIO_ST('u', 10, 16, 2),
- },
- [6] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 6,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 6,
- .scan_type = IIO_ST('u', 10, 16, 2),
- },
- [7] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 7,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 7,
- .scan_type = IIO_ST('u', 10, 16, 2),
- },
- [8] = IIO_CHAN_SOFT_TIMESTAMP(8),
+ AD799X_CHANNEL(0, 10, AD799X_EV_MASK),
+ AD799X_CHANNEL(1, 10, AD799X_EV_MASK),
+ AD799X_CHANNEL(2, 10, AD799X_EV_MASK),
+ AD799X_CHANNEL(3, 10, AD799X_EV_MASK),
+ AD799X_CHANNEL(4, 10, 0),
+ AD799X_CHANNEL(5, 10, 0),
+ AD799X_CHANNEL(6, 10, 0),
+ AD799X_CHANNEL(7, 10, 0),
+ IIO_CHAN_SOFT_TIMESTAMP(8),
},
.num_channels = 9,
- .int_vref_mv = 1024,
.default_config = AD7998_ALERT_EN,
.info = &ad7993_4_7_8_info,
},
[ad7998] = {
.channel = {
- [0] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 0,
- .scan_type = IIO_ST('u', 12, 16, 0),
- .event_mask = AD799X_EV_MASK,
- },
- [1] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 1,
- .scan_type = IIO_ST('u', 12, 16, 0),
- .event_mask = AD799X_EV_MASK,
- },
- [2] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 2,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 2,
- .scan_type = IIO_ST('u', 12, 16, 0),
- .event_mask = AD799X_EV_MASK,
- },
- [3] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 3,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 3,
- .scan_type = IIO_ST('u', 12, 16, 0),
- .event_mask = AD799X_EV_MASK,
- },
- [4] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 4,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 4,
- .scan_type = IIO_ST('u', 12, 16, 0),
- },
- [5] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 5,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 5,
- .scan_type = IIO_ST('u', 12, 16, 0),
- },
- [6] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 6,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 6,
- .scan_type = IIO_ST('u', 12, 16, 0),
- },
- [7] = {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 7,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .scan_index = 7,
- .scan_type = IIO_ST('u', 12, 16, 0),
- },
- [8] = IIO_CHAN_SOFT_TIMESTAMP(8),
+ AD799X_CHANNEL(0, 12, AD799X_EV_MASK),
+ AD799X_CHANNEL(1, 12, AD799X_EV_MASK),
+ AD799X_CHANNEL(2, 12, AD799X_EV_MASK),
+ AD799X_CHANNEL(3, 12, AD799X_EV_MASK),
+ AD799X_CHANNEL(4, 12, 0),
+ AD799X_CHANNEL(5, 12, 0),
+ AD799X_CHANNEL(6, 12, 0),
+ AD799X_CHANNEL(7, 12, 0),
+ IIO_CHAN_SOFT_TIMESTAMP(8),
},
.num_channels = 9,
- .int_vref_mv = 4096,
.default_config = AD7998_ALERT_EN,
.info = &ad7993_4_7_8_info,
},
@@ -875,10 +601,10 @@ static int ad799x_probe(struct i2c_client *client,
/* TODO: Add pdata options for filtering and bit delay */
- if (pdata)
- st->int_vref_mv = pdata->vref_mv;
- else
- st->int_vref_mv = st->chip_info->int_vref_mv;
+ if (!pdata)
+ return -EINVAL;
+
+ st->int_vref_mv = pdata->vref_mv;
st->reg = regulator_get(&client->dev, "vcc");
if (!IS_ERR(st->reg)) {
@@ -946,6 +672,7 @@ static int ad799x_remove(struct i2c_client *client)
regulator_disable(st->reg);
regulator_put(st->reg);
}
+ kfree(st->rx_buf);
iio_device_free(indio_dev);
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-29 03:09:19 +0000