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iio: accel: kxsd9: Add I2C transport 

This adds I2C regmap transport for the KXSD9 driver.
Tested on the KXSD9 sensor on the APQ8060 Dragonboard.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Linus Walleij 2016-09-01 11:44:41 +02:00 committed by Jonathan Cameron
parent 0d1fb2d52d
commit a483ab7969
3 changed files with 75 additions and 1 deletions
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12
drivers/iio/accel/Kconfig
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@ -121,7 +121,7 @@ config KXSD9
tristate "Kionix KXSD9 Accelerometer Driver"
help
Say yes here to build support for the Kionix KXSD9 accelerometer.
Currently this only supports the device via an SPI interface.
It can be accessed using an (optional) SPI or I2C interface.
To compile this driver as a module, choose M here: the module
will be called kxsd9.
@ -136,6 +136,16 @@ config KXSD9_SPI
Say yes here to enable the Kionix KXSD9 accelerometer
SPI transport channel.
config KXSD9_I2C
tristate "Kionix KXSD9 I2C transport"
depends on KXSD9
depends on I2C
default KXSD9
select REGMAP_I2C
help
Say yes here to enable the Kionix KXSD9 accelerometer
I2C transport channel.
config KXCJK1013
tristate "Kionix 3-Axis Accelerometer Driver"
depends on I2C

1
drivers/iio/accel/Makefile
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@ -14,6 +14,7 @@ obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o
obj-$(CONFIG_KXCJK1013) += kxcjk-1013.o
obj-$(CONFIG_KXSD9) += kxsd9.o
obj-$(CONFIG_KXSD9_SPI) += kxsd9-spi.o
obj-$(CONFIG_KXSD9_I2C) += kxsd9-i2c.o
obj-$(CONFIG_MMA7455) += mma7455_core.o
obj-$(CONFIG_MMA7455_I2C) += mma7455_i2c.o

63
drivers/iio/accel/kxsd9-i2c.c Normal file
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@ -0,0 +1,63 @@
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/regmap.h>
#include "kxsd9.h"
static int kxsd9_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
static const struct regmap_config config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0x0e,
};
struct regmap *regmap;
regmap = devm_regmap_init_i2c(i2c, &config);
if (IS_ERR(regmap)) {
dev_err(&i2c->dev, "Failed to register i2c regmap %d\n",
(int)PTR_ERR(regmap));
return PTR_ERR(regmap);
}
return kxsd9_common_probe(&i2c->dev,
regmap,
i2c->name);
}
static int kxsd9_i2c_remove(struct i2c_client *client)
{
return kxsd9_common_remove(&client->dev);
}
#ifdef CONFIG_OF
static const struct of_device_id kxsd9_of_match[] = {
{ .compatible = "kionix,kxsd9", },
{ },
};
MODULE_DEVICE_TABLE(of, kxsd9_of_match);
#else
#define kxsd9_of_match NULL
#endif
static const struct i2c_device_id kxsd9_i2c_id[] = {
{"kxsd9", 0},
{ },
};
MODULE_DEVICE_TABLE(i2c, kxsd9_i2c_id);
static struct i2c_driver kxsd9_i2c_driver = {
.driver = {
.name = "kxsd9",
.of_match_table = of_match_ptr(kxsd9_of_match),
},
.probe = kxsd9_i2c_probe,
.remove = kxsd9_i2c_remove,
.id_table = kxsd9_i2c_id,
};
module_i2c_driver(kxsd9_i2c_driver);