*/
#include <linux/bitfield.h>
-#include <linux/iio/iio.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include "adxl313.h"
+static const struct regmap_range adxl312_readable_reg_range[] = {
+ regmap_reg_range(ADXL313_REG_DEVID0, ADXL313_REG_DEVID0),
+ regmap_reg_range(ADXL313_REG_OFS_AXIS(0), ADXL313_REG_OFS_AXIS(2)),
+ regmap_reg_range(ADXL313_REG_THRESH_ACT, ADXL313_REG_ACT_INACT_CTL),
+ regmap_reg_range(ADXL313_REG_BW_RATE, ADXL313_REG_FIFO_STATUS),
+};
+
static const struct regmap_range adxl313_readable_reg_range[] = {
regmap_reg_range(ADXL313_REG_DEVID0, ADXL313_REG_XID),
regmap_reg_range(ADXL313_REG_SOFT_RESET, ADXL313_REG_SOFT_RESET),
regmap_reg_range(ADXL313_REG_BW_RATE, ADXL313_REG_FIFO_STATUS),
};
+const struct regmap_access_table adxl312_readable_regs_table = {
+ .yes_ranges = adxl312_readable_reg_range,
+ .n_yes_ranges = ARRAY_SIZE(adxl312_readable_reg_range),
+};
+EXPORT_SYMBOL_NS_GPL(adxl312_readable_regs_table, IIO_ADXL313);
+
const struct regmap_access_table adxl313_readable_regs_table = {
.yes_ranges = adxl313_readable_reg_range,
.n_yes_ranges = ARRAY_SIZE(adxl313_readable_reg_range),
};
EXPORT_SYMBOL_NS_GPL(adxl313_readable_regs_table, IIO_ADXL313);
+const struct regmap_access_table adxl314_readable_regs_table = {
+ .yes_ranges = adxl312_readable_reg_range,
+ .n_yes_ranges = ARRAY_SIZE(adxl312_readable_reg_range),
+};
+EXPORT_SYMBOL_NS_GPL(adxl314_readable_regs_table, IIO_ADXL313);
+
+static int adxl312_check_id(struct device *dev,
+ struct adxl313_data *data)
+{
+ unsigned int regval;
+ int ret;
+
+ ret = regmap_read(data->regmap, ADXL313_REG_DEVID0, ®val);
+ if (ret)
+ return ret;
+
+ if (regval != ADXL313_DEVID0_ADXL312_314)
+ dev_warn(dev, "Invalid manufacturer ID: %#02x\n", regval);
+
+ return 0;
+}
+
+static int adxl313_check_id(struct device *dev,
+ struct adxl313_data *data)
+{
+ unsigned int regval;
+ int ret;
+
+ ret = regmap_read(data->regmap, ADXL313_REG_DEVID0, ®val);
+ if (ret)
+ return ret;
+
+ if (regval != ADXL313_DEVID0)
+ dev_warn(dev, "Invalid manufacturer ID: 0x%02x\n", regval);
+
+ /* Check DEVID1 and PARTID */
+ if (regval == ADXL313_DEVID0) {
+ ret = regmap_read(data->regmap, ADXL313_REG_DEVID1, ®val);
+ if (ret)
+ return ret;
+
+ if (regval != ADXL313_DEVID1)
+ dev_warn(dev, "Invalid mems ID: 0x%02x\n", regval);
+
+ ret = regmap_read(data->regmap, ADXL313_REG_PARTID, ®val);
+ if (ret)
+ return ret;
+
+ if (regval != ADXL313_PARTID)
+ dev_warn(dev, "Invalid device ID: 0x%02x\n", regval);
+ }
+
+ return 0;
+}
+
+const struct adxl313_chip_info adxl31x_chip_info[] = {
+ [ADXL312] = {
+ .name = "adxl312",
+ .type = ADXL312,
+ .scale_factor = 28425072,
+ .variable_range = true,
+ .soft_reset = false,
+ .check_id = &adxl312_check_id,
+ },
+ [ADXL313] = {
+ .name = "adxl313",
+ .type = ADXL313,
+ .scale_factor = 9576806,
+ .variable_range = true,
+ .soft_reset = true,
+ .check_id = &adxl313_check_id,
+ },
+ [ADXL314] = {
+ .name = "adxl314",
+ .type = ADXL314,
+ .scale_factor = 478858719,
+ .variable_range = false,
+ .soft_reset = false,
+ .check_id = &adxl312_check_id,
+ },
+};
+EXPORT_SYMBOL_NS_GPL(adxl31x_chip_info, IIO_ADXL313);
+
+static const struct regmap_range adxl312_writable_reg_range[] = {
+ regmap_reg_range(ADXL313_REG_OFS_AXIS(0), ADXL313_REG_OFS_AXIS(2)),
+ regmap_reg_range(ADXL313_REG_THRESH_ACT, ADXL313_REG_ACT_INACT_CTL),
+ regmap_reg_range(ADXL313_REG_BW_RATE, ADXL313_REG_INT_MAP),
+ regmap_reg_range(ADXL313_REG_DATA_FORMAT, ADXL313_REG_DATA_FORMAT),
+ regmap_reg_range(ADXL313_REG_FIFO_CTL, ADXL313_REG_FIFO_CTL),
+};
+
static const struct regmap_range adxl313_writable_reg_range[] = {
regmap_reg_range(ADXL313_REG_SOFT_RESET, ADXL313_REG_SOFT_RESET),
regmap_reg_range(ADXL313_REG_OFS_AXIS(0), ADXL313_REG_OFS_AXIS(2)),
regmap_reg_range(ADXL313_REG_FIFO_CTL, ADXL313_REG_FIFO_CTL),
};
+const struct regmap_access_table adxl312_writable_regs_table = {
+ .yes_ranges = adxl312_writable_reg_range,
+ .n_yes_ranges = ARRAY_SIZE(adxl312_writable_reg_range),
+};
+EXPORT_SYMBOL_NS_GPL(adxl312_writable_regs_table, IIO_ADXL313);
+
const struct regmap_access_table adxl313_writable_regs_table = {
.yes_ranges = adxl313_writable_reg_range,
.n_yes_ranges = ARRAY_SIZE(adxl313_writable_reg_range),
};
EXPORT_SYMBOL_NS_GPL(adxl313_writable_regs_table, IIO_ADXL313);
-struct adxl313_data {
- struct regmap *regmap;
- struct mutex lock; /* lock to protect transf_buf */
- __le16 transf_buf __aligned(IIO_DMA_MINALIGN);
+const struct regmap_access_table adxl314_writable_regs_table = {
+ .yes_ranges = adxl312_writable_reg_range,
+ .n_yes_ranges = ARRAY_SIZE(adxl312_writable_reg_range),
};
+EXPORT_SYMBOL_NS_GPL(adxl314_writable_regs_table, IIO_ADXL313);
static const int adxl313_odr_freqs[][2] = {
[0] = { 6, 250000 },
*val = sign_extend32(ret, chan->scan_type.realbits - 1);
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
- /*
- * Scale for any g range is given in datasheet as
- * 1024 LSB/g = 0.0009765625 * 9.80665 = 0.009576806640625 m/s^2
- */
*val = 0;
- *val2 = 9576806;
+
+ *val2 = data->chip_info->scale_factor;
+
return IIO_VAL_INT_PLUS_NANO;
case IIO_CHAN_INFO_CALIBBIAS:
ret = regmap_read(data->regmap,
return ret;
/*
- * 8-bit resolution at +/- 0.5g, that is 4x accel data scale
+ * 8-bit resolution at minimum range, that is 4x accel data scale
* factor at full resolution
*/
*val = sign_extend32(regval, 7) * 4;
switch (mask) {
case IIO_CHAN_INFO_CALIBBIAS:
/*
- * 8-bit resolution at +/- 0.5g, that is 4x accel data scale
+ * 8-bit resolution at minimum range, that is 4x accel data scale
* factor at full resolution
*/
if (clamp_val(val, -128 * 4, 127 * 4) != val)
static int adxl313_setup(struct device *dev, struct adxl313_data *data,
int (*setup)(struct device *, struct regmap *))
{
- unsigned int regval;
int ret;
- /* Ensures the device is in a consistent state after start up */
- ret = regmap_write(data->regmap, ADXL313_REG_SOFT_RESET,
- ADXL313_SOFT_RESET);
- if (ret)
- return ret;
+ /*
+ * If sw reset available, ensures the device is in a consistent
+ * state after start up
+ */
+ if (data->chip_info->soft_reset) {
+ ret = regmap_write(data->regmap, ADXL313_REG_SOFT_RESET,
+ ADXL313_SOFT_RESET);
+ if (ret)
+ return ret;
+ }
if (setup) {
ret = setup(dev, data->regmap);
return ret;
}
- ret = regmap_read(data->regmap, ADXL313_REG_DEVID0, ®val);
+ ret = data->chip_info->check_id(dev, data);
if (ret)
return ret;
- if (regval != ADXL313_DEVID0) {
- dev_err(dev, "Invalid manufacturer ID: 0x%02x\n", regval);
- return -ENODEV;
- }
-
- ret = regmap_read(data->regmap, ADXL313_REG_DEVID1, ®val);
- if (ret)
- return ret;
-
- if (regval != ADXL313_DEVID1) {
- dev_err(dev, "Invalid mems ID: 0x%02x\n", regval);
- return -ENODEV;
- }
-
- ret = regmap_read(data->regmap, ADXL313_REG_PARTID, ®val);
- if (ret)
- return ret;
+ /* Sets the range to maximum, full resolution, if applicable */
+ if (data->chip_info->variable_range) {
+ ret = regmap_update_bits(data->regmap, ADXL313_REG_DATA_FORMAT,
+ ADXL313_RANGE_MSK,
+ FIELD_PREP(ADXL313_RANGE_MSK, ADXL313_RANGE_MAX));
+ if (ret)
+ return ret;
- if (regval != ADXL313_PARTID) {
- dev_err(dev, "Invalid device ID: 0x%02x\n", regval);
- return -ENODEV;
+ /* Enables full resolution */
+ ret = regmap_update_bits(data->regmap, ADXL313_REG_DATA_FORMAT,
+ ADXL313_FULL_RES, ADXL313_FULL_RES);
+ if (ret)
+ return ret;
}
- /* Sets the range to +/- 4g */
- ret = regmap_update_bits(data->regmap, ADXL313_REG_DATA_FORMAT,
- ADXL313_RANGE_MSK,
- FIELD_PREP(ADXL313_RANGE_MSK, ADXL313_RANGE_4G));
- if (ret)
- return ret;
-
- /* Enables full resolution */
- ret = regmap_update_bits(data->regmap, ADXL313_REG_DATA_FORMAT,
- ADXL313_FULL_RES, ADXL313_FULL_RES);
- if (ret)
- return ret;
-
/* Enables measurement mode */
return regmap_update_bits(data->regmap, ADXL313_REG_POWER_CTL,
ADXL313_POWER_CTL_MSK,
* adxl313_core_probe() - probe and setup for adxl313 accelerometer
* @dev: Driver model representation of the device
* @regmap: Register map of the device
- * @name: Device name buffer reference
+ * @chip_info: Structure containing device specific data
* @setup: Setup routine to be executed right before the standard device
* setup, can also be set to NULL if not required
*
*/
int adxl313_core_probe(struct device *dev,
struct regmap *regmap,
- const char *name,
+ const struct adxl313_chip_info *chip_info,
int (*setup)(struct device *, struct regmap *))
{
struct adxl313_data *data;
data = iio_priv(indio_dev);
data->regmap = regmap;
+ data->chip_info = chip_info;
+
mutex_init(&data->lock);
- indio_dev->name = name;
+ indio_dev->name = chip_info->name;
indio_dev->info = &adxl313_info;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = adxl313_channels;
#include "adxl313.h"
-static const struct regmap_config adxl313_i2c_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
- .rd_table = &adxl313_readable_regs_table,
- .wr_table = &adxl313_writable_regs_table,
- .max_register = 0x39,
+static const struct regmap_config adxl31x_i2c_regmap_config[] = {
+ [ADXL312] = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .rd_table = &adxl312_readable_regs_table,
+ .wr_table = &adxl312_writable_regs_table,
+ .max_register = 0x39,
+ },
+ [ADXL313] = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .rd_table = &adxl313_readable_regs_table,
+ .wr_table = &adxl313_writable_regs_table,
+ .max_register = 0x39,
+ },
+ [ADXL314] = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .rd_table = &adxl314_readable_regs_table,
+ .wr_table = &adxl314_writable_regs_table,
+ .max_register = 0x39,
+ },
};
-static int adxl313_i2c_probe(struct i2c_client *client)
-{
- struct regmap *regmap;
-
- regmap = devm_regmap_init_i2c(client, &adxl313_i2c_regmap_config);
- if (IS_ERR(regmap)) {
- dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
- PTR_ERR(regmap));
- return PTR_ERR(regmap);
- }
-
- return adxl313_core_probe(&client->dev, regmap, client->name, NULL);
-}
-
static const struct i2c_device_id adxl313_i2c_id[] = {
- { "adxl313" },
+ { .name = "adxl312", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] },
+ { .name = "adxl313", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] },
+ { .name = "adxl314", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] },
{ }
};
MODULE_DEVICE_TABLE(i2c, adxl313_i2c_id);
static const struct of_device_id adxl313_of_match[] = {
- { .compatible = "adi,adxl313" },
+ { .compatible = "adi,adxl312", .data = &adxl31x_chip_info[ADXL312] },
+ { .compatible = "adi,adxl313", .data = &adxl31x_chip_info[ADXL313] },
+ { .compatible = "adi,adxl314", .data = &adxl31x_chip_info[ADXL314] },
{ }
};
MODULE_DEVICE_TABLE(of, adxl313_of_match);
+static int adxl313_i2c_probe(struct i2c_client *client)
+{
+ const struct adxl313_chip_info *chip_data;
+ struct regmap *regmap;
+
+ /*
+ * Retrieves device specific data as a pointer to a
+ * adxl313_chip_info structure
+ */
+ chip_data = device_get_match_data(&client->dev);
+ if (!chip_data)
+ chip_data = (const struct adxl313_chip_info *)i2c_match_id(adxl313_i2c_id, client)->driver_data;
+
+ regmap = devm_regmap_init_i2c(client,
+ &adxl31x_i2c_regmap_config[chip_data->type]);
+ if (IS_ERR(regmap)) {
+ dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
+ PTR_ERR(regmap));
+ return PTR_ERR(regmap);
+ }
+
+ return adxl313_core_probe(&client->dev, regmap, chip_data, NULL);
+}
+
static struct i2c_driver adxl313_i2c_driver = {
.driver = {
.name = "adxl313_i2c",
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/spi/spi.h>
+#include <linux/property.h>
#include "adxl313.h"
-static const struct regmap_config adxl313_spi_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
- .rd_table = &adxl313_readable_regs_table,
- .wr_table = &adxl313_writable_regs_table,
- .max_register = 0x39,
- /* Setting bits 7 and 6 enables multiple-byte read */
- .read_flag_mask = BIT(7) | BIT(6),
+static const struct regmap_config adxl31x_spi_regmap_config[] = {
+ [ADXL312] = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .rd_table = &adxl312_readable_regs_table,
+ .wr_table = &adxl312_writable_regs_table,
+ .max_register = 0x39,
+ /* Setting bits 7 and 6 enables multiple-byte read */
+ .read_flag_mask = BIT(7) | BIT(6),
+ },
+ [ADXL313] = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .rd_table = &adxl313_readable_regs_table,
+ .wr_table = &adxl313_writable_regs_table,
+ .max_register = 0x39,
+ /* Setting bits 7 and 6 enables multiple-byte read */
+ .read_flag_mask = BIT(7) | BIT(6),
+ },
+ [ADXL314] = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .rd_table = &adxl314_readable_regs_table,
+ .wr_table = &adxl314_writable_regs_table,
+ .max_register = 0x39,
+ /* Setting bits 7 and 6 enables multiple-byte read */
+ .read_flag_mask = BIT(7) | BIT(6),
+ },
};
static int adxl313_spi_setup(struct device *dev, struct regmap *regmap)
static int adxl313_spi_probe(struct spi_device *spi)
{
- const struct spi_device_id *id = spi_get_device_id(spi);
+ const struct adxl313_chip_info *chip_data;
struct regmap *regmap;
int ret;
if (ret)
return ret;
- regmap = devm_regmap_init_spi(spi, &adxl313_spi_regmap_config);
+ /*
+ * Retrieves device specific data as a pointer to a
+ * adxl313_chip_info structure
+ */
+ chip_data = device_get_match_data(&spi->dev);
+ if (!chip_data)
+ chip_data = (const struct adxl313_chip_info *)spi_get_device_id(spi)->driver_data;
+
+ regmap = devm_regmap_init_spi(spi,
+ &adxl31x_spi_regmap_config[chip_data->type]);
+
if (IS_ERR(regmap)) {
dev_err(&spi->dev, "Error initializing spi regmap: %ld\n",
PTR_ERR(regmap));
return PTR_ERR(regmap);
}
- return adxl313_core_probe(&spi->dev, regmap, id->name,
- &adxl313_spi_setup);
+ return adxl313_core_probe(&spi->dev, regmap,
+ chip_data, &adxl313_spi_setup);
}
static const struct spi_device_id adxl313_spi_id[] = {
- { "adxl313" },
+ { .name = "adxl312", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] },
+ { .name = "adxl313", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL313] },
+ { .name = "adxl314", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL314] },
{ }
};
MODULE_DEVICE_TABLE(spi, adxl313_spi_id);
static const struct of_device_id adxl313_of_match[] = {
- { .compatible = "adi,adxl313" },
+ { .compatible = "adi,adxl312", .data = &adxl31x_chip_info[ADXL312] },
+ { .compatible = "adi,adxl313", .data = &adxl31x_chip_info[ADXL313] },
+ { .compatible = "adi,adxl314", .data = &adxl31x_chip_info[ADXL314] },
{ }
};
projects / platform / kernel / linux-starfive.git / commitdiff