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-rw-r--r--drivers/iio/chemical/Kconfig1
-rw-r--r--drivers/iio/chemical/atlas-ph-sensor.c83
-rw-r--r--drivers/iio/chemical/vz89x.c201
3 files changed, 225 insertions, 60 deletions
diff --git a/drivers/iio/chemical/Kconfig b/drivers/iio/chemical/Kconfig
index 4bcc025e8c8a..cea7f9857a1f 100644
--- a/drivers/iio/chemical/Kconfig
+++ b/drivers/iio/chemical/Kconfig
@@ -16,6 +16,7 @@ config ATLAS_PH_SENSOR
Atlas Scientific OEM SM sensors:
* pH SM sensor
* EC SM sensor
+ * ORP SM sensor
To compile this driver as module, choose M here: the
module will be called atlas-ph-sensor.
diff --git a/drivers/iio/chemical/atlas-ph-sensor.c b/drivers/iio/chemical/atlas-ph-sensor.c
index ae038a59d256..bd321b305a0a 100644
--- a/drivers/iio/chemical/atlas-ph-sensor.c
+++ b/drivers/iio/chemical/atlas-ph-sensor.c
@@ -66,12 +66,17 @@
#define ATLAS_REG_TDS_DATA 0x1c
#define ATLAS_REG_PSS_DATA 0x20
+#define ATLAS_REG_ORP_CALIB_STATUS 0x0d
+#define ATLAS_REG_ORP_DATA 0x0e
+
#define ATLAS_PH_INT_TIME_IN_US 450000
#define ATLAS_EC_INT_TIME_IN_US 650000
+#define ATLAS_ORP_INT_TIME_IN_US 450000
enum {
ATLAS_PH_SM,
ATLAS_EC_SM,
+ ATLAS_ORP_SM,
};
struct atlas_data {
@@ -84,26 +89,10 @@ struct atlas_data {
__be32 buffer[6]; /* 96-bit data + 32-bit pad + 64-bit timestamp */
};
-static const struct regmap_range atlas_volatile_ranges[] = {
- regmap_reg_range(ATLAS_REG_INT_CONTROL, ATLAS_REG_INT_CONTROL),
- regmap_reg_range(ATLAS_REG_PH_DATA, ATLAS_REG_PH_DATA + 4),
- regmap_reg_range(ATLAS_REG_EC_DATA, ATLAS_REG_PSS_DATA + 4),
-};
-
-static const struct regmap_access_table atlas_volatile_table = {
- .yes_ranges = atlas_volatile_ranges,
- .n_yes_ranges = ARRAY_SIZE(atlas_volatile_ranges),
-};
-
static const struct regmap_config atlas_regmap_config = {
.name = ATLAS_REGMAP_NAME,
-
.reg_bits = 8,
.val_bits = 8,
-
- .volatile_table = &atlas_volatile_table,
- .max_register = ATLAS_REG_PSS_DATA + 4,
- .cache_type = REGCACHE_RBTREE,
};
static const struct iio_chan_spec atlas_ph_channels[] = {
@@ -175,6 +164,23 @@ static const struct iio_chan_spec atlas_ec_channels[] = {
},
};
+static const struct iio_chan_spec atlas_orp_channels[] = {
+ {
+ .type = IIO_VOLTAGE,
+ .address = ATLAS_REG_ORP_DATA,
+ .info_mask_separate =
+ BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+ .scan_index = 0,
+ .scan_type = {
+ .sign = 's',
+ .realbits = 32,
+ .storagebits = 32,
+ .endianness = IIO_BE,
+ },
+ },
+ IIO_CHAN_SOFT_TIMESTAMP(1),
+};
+
static int atlas_check_ph_calibration(struct atlas_data *data)
{
struct device *dev = &data->client->dev;
@@ -240,6 +246,22 @@ static int atlas_check_ec_calibration(struct atlas_data *data)
return 0;
}
+static int atlas_check_orp_calibration(struct atlas_data *data)
+{
+ struct device *dev = &data->client->dev;
+ int ret;
+ unsigned int val;
+
+ ret = regmap_read(data->regmap, ATLAS_REG_ORP_CALIB_STATUS, &val);
+ if (ret)
+ return ret;
+
+ if (!val)
+ dev_warn(dev, "device has not been calibrated\n");
+
+ return 0;
+};
+
struct atlas_device {
const struct iio_chan_spec *channels;
int num_channels;
@@ -264,7 +286,13 @@ static struct atlas_device atlas_devices[] = {
.calibration = &atlas_check_ec_calibration,
.delay = ATLAS_EC_INT_TIME_IN_US,
},
-
+ [ATLAS_ORP_SM] = {
+ .channels = atlas_orp_channels,
+ .num_channels = 2,
+ .data_reg = ATLAS_REG_ORP_DATA,
+ .calibration = &atlas_check_orp_calibration,
+ .delay = ATLAS_ORP_INT_TIME_IN_US,
+ },
};
static int atlas_set_powermode(struct atlas_data *data, int on)
@@ -402,15 +430,14 @@ static int atlas_read_raw(struct iio_dev *indio_dev,
case IIO_PH:
case IIO_CONCENTRATION:
case IIO_ELECTRICALCONDUCTIVITY:
- mutex_lock(&indio_dev->mlock);
+ case IIO_VOLTAGE:
+ ret = iio_device_claim_direct_mode(indio_dev);
+ if (ret)
+ return ret;
- if (iio_buffer_enabled(indio_dev))
- ret = -EBUSY;
- else
- ret = atlas_read_measurement(data,
- chan->address, &reg);
+ ret = atlas_read_measurement(data, chan->address, &reg);
- mutex_unlock(&indio_dev->mlock);
+ iio_device_release_direct_mode(indio_dev);
break;
default:
ret = -EINVAL;
@@ -434,12 +461,16 @@ static int atlas_read_raw(struct iio_dev *indio_dev,
break;
case IIO_ELECTRICALCONDUCTIVITY:
*val = 1; /* 0.00001 */
- *val = 100000;
+ *val2 = 100000;
break;
case IIO_CONCENTRATION:
*val = 0; /* 0.000000001 */
*val2 = 1000;
return IIO_VAL_INT_PLUS_NANO;
+ case IIO_VOLTAGE:
+ *val = 1; /* 0.1 */
+ *val2 = 10;
+ break;
default:
return -EINVAL;
}
@@ -475,6 +506,7 @@ static const struct iio_info atlas_info = {
static const struct i2c_device_id atlas_id[] = {
{ "atlas-ph-sm", ATLAS_PH_SM},
{ "atlas-ec-sm", ATLAS_EC_SM},
+ { "atlas-orp-sm", ATLAS_ORP_SM},
{}
};
MODULE_DEVICE_TABLE(i2c, atlas_id);
@@ -482,6 +514,7 @@ MODULE_DEVICE_TABLE(i2c, atlas_id);
static const struct of_device_id atlas_dt_ids[] = {
{ .compatible = "atlas,ph-sm", .data = (void *)ATLAS_PH_SM, },
{ .compatible = "atlas,ec-sm", .data = (void *)ATLAS_EC_SM, },
+ { .compatible = "atlas,orp-sm", .data = (void *)ATLAS_ORP_SM, },
{ }
};
MODULE_DEVICE_TABLE(of, atlas_dt_ids);
diff --git a/drivers/iio/chemical/vz89x.c b/drivers/iio/chemical/vz89x.c
index 652649da500f..8e0e4415c161 100644
--- a/drivers/iio/chemical/vz89x.c
+++ b/drivers/iio/chemical/vz89x.c
@@ -19,25 +19,55 @@
#include <linux/mutex.h>
#include <linux/init.h>
#include <linux/i2c.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#define VZ89X_REG_MEASUREMENT 0x09
-#define VZ89X_REG_MEASUREMENT_SIZE 6
+#define VZ89X_REG_MEASUREMENT_RD_SIZE 6
+#define VZ89X_REG_MEASUREMENT_WR_SIZE 3
#define VZ89X_VOC_CO2_IDX 0
#define VZ89X_VOC_SHORT_IDX 1
#define VZ89X_VOC_TVOC_IDX 2
#define VZ89X_VOC_RESISTANCE_IDX 3
+#define VZ89TE_REG_MEASUREMENT 0x0c
+#define VZ89TE_REG_MEASUREMENT_RD_SIZE 7
+#define VZ89TE_REG_MEASUREMENT_WR_SIZE 6
+
+#define VZ89TE_VOC_TVOC_IDX 0
+#define VZ89TE_VOC_CO2_IDX 1
+#define VZ89TE_VOC_RESISTANCE_IDX 2
+
+enum {
+ VZ89X,
+ VZ89TE,
+};
+
+struct vz89x_chip_data;
+
struct vz89x_data {
struct i2c_client *client;
+ const struct vz89x_chip_data *chip;
struct mutex lock;
int (*xfer)(struct vz89x_data *data, u8 cmd);
+ bool is_valid;
unsigned long last_update;
- u8 buffer[VZ89X_REG_MEASUREMENT_SIZE];
+ u8 buffer[VZ89TE_REG_MEASUREMENT_RD_SIZE];
+};
+
+struct vz89x_chip_data {
+ bool (*valid)(struct vz89x_data *data);
+ const struct iio_chan_spec *channels;
+ u8 num_channels;
+
+ u8 cmd;
+ u8 read_size;
+ u8 write_size;
};
static const struct iio_chan_spec vz89x_channels[] = {
@@ -70,6 +100,40 @@ static const struct iio_chan_spec vz89x_channels[] = {
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
.address = VZ89X_VOC_RESISTANCE_IDX,
+ .scan_index = -1,
+ .scan_type = {
+ .endianness = IIO_LE,
+ },
+ },
+};
+
+static const struct iio_chan_spec vz89te_channels[] = {
+ {
+ .type = IIO_CONCENTRATION,
+ .channel2 = IIO_MOD_VOC,
+ .modified = 1,
+ .info_mask_separate =
+ BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_RAW),
+ .address = VZ89TE_VOC_TVOC_IDX,
+ },
+
+ {
+ .type = IIO_CONCENTRATION,
+ .channel2 = IIO_MOD_CO2,
+ .modified = 1,
+ .info_mask_separate =
+ BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_RAW),
+ .address = VZ89TE_VOC_CO2_IDX,
+ },
+ {
+ .type = IIO_RESISTANCE,
+ .info_mask_separate =
+ BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+ .address = VZ89TE_VOC_RESISTANCE_IDX,
+ .scan_index = -1,
+ .scan_type = {
+ .endianness = IIO_BE,
+ },
},
};
@@ -93,29 +157,45 @@ static const struct attribute_group vz89x_attrs_group = {
* always zero, and by also confirming the VOC_short isn't zero.
*/
-static int vz89x_measurement_is_valid(struct vz89x_data *data)
+static bool vz89x_measurement_is_valid(struct vz89x_data *data)
{
if (data->buffer[VZ89X_VOC_SHORT_IDX] == 0)
- return 1;
+ return true;
- return !!(data->buffer[VZ89X_REG_MEASUREMENT_SIZE - 1] > 0);
+ return !!(data->buffer[data->chip->read_size - 1] > 0);
+}
+
+/* VZ89TE device has a modified CRC-8 two complement check */
+static bool vz89te_measurement_is_valid(struct vz89x_data *data)
+{
+ u8 crc = 0;
+ int i, sum = 0;
+
+ for (i = 0; i < (data->chip->read_size - 1); i++) {
+ sum = crc + data->buffer[i];
+ crc = sum;
+ crc += sum / 256;
+ }
+
+ return !((0xff - crc) == data->buffer[data->chip->read_size - 1]);
}
static int vz89x_i2c_xfer(struct vz89x_data *data, u8 cmd)
{
+ const struct vz89x_chip_data *chip = data->chip;
struct i2c_client *client = data->client;
struct i2c_msg msg[2];
int ret;
- u8 buf[3] = { cmd, 0, 0};
+ u8 buf[6] = { cmd, 0, 0, 0, 0, 0xf3 };
msg[0].addr = client->addr;
msg[0].flags = client->flags;
- msg[0].len = 3;
+ msg[0].len = chip->write_size;
msg[0].buf = (char *) &buf;
msg[1].addr = client->addr;
msg[1].flags = client->flags | I2C_M_RD;
- msg[1].len = VZ89X_REG_MEASUREMENT_SIZE;
+ msg[1].len = chip->read_size;
msg[1].buf = (char *) &data->buffer;
ret = i2c_transfer(client->adapter, msg, 2);
@@ -133,7 +213,7 @@ static int vz89x_smbus_xfer(struct vz89x_data *data, u8 cmd)
if (ret < 0)
return ret;
- for (i = 0; i < VZ89X_REG_MEASUREMENT_SIZE; i++) {
+ for (i = 0; i < data->chip->read_size; i++) {
ret = i2c_smbus_read_byte(client);
if (ret < 0)
return ret;
@@ -145,30 +225,47 @@ static int vz89x_smbus_xfer(struct vz89x_data *data, u8 cmd)
static int vz89x_get_measurement(struct vz89x_data *data)
{
+ const struct vz89x_chip_data *chip = data->chip;
int ret;
/* sensor can only be polled once a second max per datasheet */
if (!time_after(jiffies, data->last_update + HZ))
- return 0;
+ return data->is_valid ? 0 : -EAGAIN;
+
+ data->is_valid = false;
+ data->last_update = jiffies;
- ret = data->xfer(data, VZ89X_REG_MEASUREMENT);
+ ret = data->xfer(data, chip->cmd);
if (ret < 0)
return ret;
- ret = vz89x_measurement_is_valid(data);
+ ret = chip->valid(data);
if (ret)
return -EAGAIN;
- data->last_update = jiffies;
+ data->is_valid = true;
return 0;
}
-static int vz89x_get_resistance_reading(struct vz89x_data *data)
+static int vz89x_get_resistance_reading(struct vz89x_data *data,
+ struct iio_chan_spec const *chan,
+ int *val)
{
- u8 *buf = &data->buffer[VZ89X_VOC_RESISTANCE_IDX];
+ u8 *tmp = (u8 *) &data->buffer[chan->address];
- return buf[0] | (buf[1] << 8);
+ switch (chan->scan_type.endianness) {
+ case IIO_LE:
+ *val = le32_to_cpup((__le32 *) tmp) & GENMASK(23, 0);
+ break;
+ case IIO_BE:
+ *val = be32_to_cpup((__be32 *) tmp) >> 8;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
}
static int vz89x_read_raw(struct iio_dev *indio_dev,
@@ -187,15 +284,15 @@ static int vz89x_read_raw(struct iio_dev *indio_dev,
if (ret)
return ret;
- switch (chan->address) {
- case VZ89X_VOC_CO2_IDX:
- case VZ89X_VOC_SHORT_IDX:
- case VZ89X_VOC_TVOC_IDX:
+ switch (chan->type) {
+ case IIO_CONCENTRATION:
*val = data->buffer[chan->address];
return IIO_VAL_INT;
- case VZ89X_VOC_RESISTANCE_IDX:
- *val = vz89x_get_resistance_reading(data);
- return IIO_VAL_INT;
+ case IIO_RESISTANCE:
+ ret = vz89x_get_resistance_reading(data, chan, val);
+ if (!ret)
+ return IIO_VAL_INT;
+ break;
default:
return -EINVAL;
}
@@ -210,12 +307,12 @@ static int vz89x_read_raw(struct iio_dev *indio_dev,
}
break;
case IIO_CHAN_INFO_OFFSET:
- switch (chan->address) {
- case VZ89X_VOC_CO2_IDX:
+ switch (chan->channel2) {
+ case IIO_MOD_CO2:
*val = 44;
*val2 = 250000;
return IIO_VAL_INT_PLUS_MICRO;
- case VZ89X_VOC_TVOC_IDX:
+ case IIO_MOD_VOC:
*val = -13;
return IIO_VAL_INT;
default:
@@ -232,11 +329,43 @@ static const struct iio_info vz89x_info = {
.driver_module = THIS_MODULE,
};
+static const struct vz89x_chip_data vz89x_chips[] = {
+ {
+ .valid = vz89x_measurement_is_valid,
+
+ .cmd = VZ89X_REG_MEASUREMENT,
+ .read_size = VZ89X_REG_MEASUREMENT_RD_SIZE,
+ .write_size = VZ89X_REG_MEASUREMENT_WR_SIZE,
+
+ .channels = vz89x_channels,
+ .num_channels = ARRAY_SIZE(vz89x_channels),
+ },
+ {
+ .valid = vz89te_measurement_is_valid,
+
+ .cmd = VZ89TE_REG_MEASUREMENT,
+ .read_size = VZ89TE_REG_MEASUREMENT_RD_SIZE,
+ .write_size = VZ89TE_REG_MEASUREMENT_WR_SIZE,
+
+ .channels = vz89te_channels,
+ .num_channels = ARRAY_SIZE(vz89te_channels),
+ },
+};
+
+static const struct of_device_id vz89x_dt_ids[] = {
+ { .compatible = "sgx,vz89x", .data = (void *) VZ89X },
+ { .compatible = "sgx,vz89te", .data = (void *) VZ89TE },
+ { }
+};
+MODULE_DEVICE_TABLE(of, vz89x_dt_ids);
+
static int vz89x_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct iio_dev *indio_dev;
struct vz89x_data *data;
+ const struct of_device_id *of_id;
+ int chip_id;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
if (!indio_dev)
@@ -251,8 +380,15 @@ static int vz89x_probe(struct i2c_client *client,
else
return -EOPNOTSUPP;
+ of_id = of_match_device(vz89x_dt_ids, &client->dev);
+ if (!of_id)
+ chip_id = id->driver_data;
+ else
+ chip_id = (unsigned long)of_id->data;
+
i2c_set_clientdata(client, indio_dev);
data->client = client;
+ data->chip = &vz89x_chips[chip_id];
data->last_update = jiffies - HZ;
mutex_init(&data->lock);
@@ -261,24 +397,19 @@ static int vz89x_probe(struct i2c_client *client,
indio_dev->name = dev_name(&client->dev);
indio_dev->modes = INDIO_DIRECT_MODE;
- indio_dev->channels = vz89x_channels;
- indio_dev->num_channels = ARRAY_SIZE(vz89x_channels);
+ indio_dev->channels = data->chip->channels;
+ indio_dev->num_channels = data->chip->num_channels;
return devm_iio_device_register(&client->dev, indio_dev);
}
static const struct i2c_device_id vz89x_id[] = {
- { "vz89x", 0 },
+ { "vz89x", VZ89X },
+ { "vz89te", VZ89TE },
{ }
};
MODULE_DEVICE_TABLE(i2c, vz89x_id);
-static const struct of_device_id vz89x_dt_ids[] = {
- { .compatible = "sgx,vz89x" },
- { }
-};
-MODULE_DEVICE_TABLE(of, vz89x_dt_ids);
-
static struct i2c_driver vz89x_driver = {
.driver = {
.name = "vz89x",
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-09 22:33:35 +0300