#define ADXL355_DEVID_AD_VAL 0xAD
#define ADXL355_DEVID_MST_VAL 0x1D
#define ADXL355_PARTID_VAL 0xED
+#define ADXL359_PARTID_VAL 0xE9
#define ADXL355_RESET_CODE 0x52
static const struct regmap_range adxl355_read_reg_range[] = {
};
EXPORT_SYMBOL_NS_GPL(adxl355_writeable_regs_tbl, IIO_ADXL355);
+const struct adxl355_chip_info adxl35x_chip_info[] = {
+ [ADXL355] = {
+ .name = "adxl355",
+ .part_id = ADXL355_PARTID_VAL,
+ /*
+ * At +/- 2g with 20-bit resolution, scale is given in datasheet
+ * as 3.9ug/LSB = 0.0000039 * 9.80665 = 0.00003824593 m/s^2.
+ */
+ .accel_scale = {
+ .integer = 0,
+ .decimal = 38245,
+ },
+ /*
+ * The datasheet defines an intercept of 1885 LSB at 25 degC
+ * and a slope of -9.05 LSB/C. The following formula can be used
+ * to find the temperature:
+ * Temp = ((RAW - 1885)/(-9.05)) + 25 but this doesn't follow
+ * the format of the IIO which is Temp = (RAW + OFFSET) * SCALE.
+ * Hence using some rearranging we get the scale as -110.497238
+ * and offset as -2111.25.
+ */
+ .temp_offset = {
+ .integer = -2111,
+ .decimal = 250000,
+ },
+ },
+ [ADXL359] = {
+ .name = "adxl359",
+ .part_id = ADXL359_PARTID_VAL,
+ /*
+ * At +/- 10g with 20-bit resolution, scale is given in datasheet
+ * as 19.5ug/LSB = 0.0000195 * 9.80665 = 0.0.00019122967 m/s^2.
+ */
+ .accel_scale = {
+ .integer = 0,
+ .decimal = 191229,
+ },
+ /*
+ * The datasheet defines an intercept of 1852 LSB at 25 degC
+ * and a slope of -9.05 LSB/C. The following formula can be used
+ * to find the temperature:
+ * Temp = ((RAW - 1852)/(-9.05)) + 25 but this doesn't follow
+ * the format of the IIO which is Temp = (RAW + OFFSET) * SCALE.
+ * Hence using some rearranging we get the scale as -110.497238
+ * and offset as -2079.25.
+ */
+ .temp_offset = {
+ .integer = -2079,
+ .decimal = 250000,
+ },
+ },
+};
+EXPORT_SYMBOL_NS_GPL(adxl35x_chip_info, IIO_ADXL355);
+
enum adxl355_op_mode {
ADXL355_MEASUREMENT,
ADXL355_STANDBY,
};
struct adxl355_data {
+ const struct adxl355_chip_info *chip_info;
struct regmap *regmap;
struct device *dev;
struct mutex lock; /* lock to protect op_mode */
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
- /*
- * The datasheet defines an intercept of 1885 LSB at 25 degC
- * and a slope of -9.05 LSB/C. The following formula can be used
- * to find the temperature:
- * Temp = ((RAW - 1885)/(-9.05)) + 25 but this doesn't follow
- * the format of the IIO which is Temp = (RAW + OFFSET) * SCALE.
- * Hence using some rearranging we get the scale as -110.497238
- * and offset as -2111.25.
- */
case IIO_TEMP:
+ /*
+ * Temperature scale is -110.497238.
+ * See the detailed explanation in adxl35x_chip_info
+ * definition above.
+ */
*val = -110;
*val2 = 497238;
return IIO_VAL_INT_PLUS_MICRO;
- /*
- * At +/- 2g with 20-bit resolution, scale is given in datasheet
- * as 3.9ug/LSB = 0.0000039 * 9.80665 = 0.00003824593 m/s^2.
- */
case IIO_ACCEL:
- *val = 0;
- *val2 = 38245;
+ *val = data->chip_info->accel_scale.integer;
+ *val2 = data->chip_info->accel_scale.decimal;
return IIO_VAL_INT_PLUS_NANO;
default:
return -EINVAL;
}
case IIO_CHAN_INFO_OFFSET:
- *val = -2111;
- *val2 = 250000;
+ *val = data->chip_info->temp_offset.integer;
+ *val2 = data->chip_info->temp_offset.decimal;
return IIO_VAL_INT_PLUS_MICRO;
case IIO_CHAN_INFO_CALIBBIAS:
*val = sign_extend32(data->calibbias[chan->address], 15);
}
int adxl355_core_probe(struct device *dev, struct regmap *regmap,
- const char *name)
+ const struct adxl355_chip_info *chip_info)
{
struct adxl355_data *data;
struct iio_dev *indio_dev;
data->regmap = regmap;
data->dev = dev;
data->op_mode = ADXL355_STANDBY;
+ data->chip_info = chip_info;
mutex_init(&data->lock);
- indio_dev->name = name;
+ indio_dev->name = chip_info->name;
indio_dev->info = &adxl355_info;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = adxl355_channels;
static int adxl355_i2c_probe(struct i2c_client *client)
{
struct regmap *regmap;
+ const struct adxl355_chip_info *chip_data;
+ const struct i2c_device_id *adxl355;
+
+ chip_data = device_get_match_data(&client->dev);
+ if (!chip_data) {
+ adxl355 = to_i2c_driver(client->dev.driver)->id_table;
+ if (!adxl355)
+ return -EINVAL;
+
+ chip_data = (void *)i2c_match_id(adxl355, client)->driver_data;
+
+ if (!chip_data)
+ return -EINVAL;
+ }
regmap = devm_regmap_init_i2c(client, &adxl355_i2c_regmap_config);
if (IS_ERR(regmap)) {
return PTR_ERR(regmap);
}
- return adxl355_core_probe(&client->dev, regmap, client->name);
+ return adxl355_core_probe(&client->dev, regmap, chip_data);
}
static const struct i2c_device_id adxl355_i2c_id[] = {
- { "adxl355", 0 },
+ { "adxl355", (kernel_ulong_t)&adxl35x_chip_info[ADXL355] },
+ { "adxl359", (kernel_ulong_t)&adxl35x_chip_info[ADXL359] },
{ }
};
MODULE_DEVICE_TABLE(i2c, adxl355_i2c_id);
static const struct of_device_id adxl355_of_match[] = {
- { .compatible = "adi,adxl355" },
+ { .compatible = "adi,adxl355", .data = &adxl35x_chip_info[ADXL355] },
+ { .compatible = "adi,adxl359", .data = &adxl35x_chip_info[ADXL359] },
{ }
};
MODULE_DEVICE_TABLE(of, adxl355_of_match);
#include <linux/mod_devicetable.h>
#include <linux/regmap.h>
#include <linux/spi/spi.h>
+#include <linux/property.h>
#include "adxl355.h"
static int adxl355_spi_probe(struct spi_device *spi)
{
- const struct spi_device_id *id = spi_get_device_id(spi);
+ const struct adxl355_chip_info *chip_data;
struct regmap *regmap;
+ chip_data = device_get_match_data(&spi->dev);
+ if (!chip_data) {
+ chip_data = (void *)spi_get_device_id(spi)->driver_data;
+
+ if (!chip_data)
+ return -EINVAL;
+ }
+
regmap = devm_regmap_init_spi(spi, &adxl355_spi_regmap_config);
if (IS_ERR(regmap)) {
dev_err(&spi->dev, "Error initializing spi regmap: %ld\n",
return PTR_ERR(regmap);
}
- return adxl355_core_probe(&spi->dev, regmap, id->name);
+ return adxl355_core_probe(&spi->dev, regmap, chip_data);
}
static const struct spi_device_id adxl355_spi_id[] = {
- { "adxl355", 0 },
+ { "adxl355", (kernel_ulong_t)&adxl35x_chip_info[ADXL355] },
+ { "adxl359", (kernel_ulong_t)&adxl35x_chip_info[ADXL359] },
{ }
};
MODULE_DEVICE_TABLE(spi, adxl355_spi_id);
static const struct of_device_id adxl355_of_match[] = {
- { .compatible = "adi,adxl355" },
+ { .compatible = "adi,adxl355", .data = &adxl35x_chip_info[ADXL355] },
+ { .compatible = "adi,adxl359", .data = &adxl35x_chip_info[ADXL359] },
{ }
};
MODULE_DEVICE_TABLE(of, adxl355_of_match);
OSDN Git Service
