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authorLinus Walleij <linus.walleij@linaro.org>2016-09-01 11:44:41 +0200
committerJonathan Cameron <jic23@kernel.org>2016-09-18 11:29:12 +0100
commita483ab796960c9080dc9f97f5905d11debad3df9 (patch)
treef750a86de062a43b3c609efe5686f18fb936710e /drivers/iio/accel
parent0d1fb2d52d8b4a1124cb2db7d22c4131ad5805cf (diff)
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>
Diffstat (limited to 'drivers/iio/accel')
-rw-r--r--drivers/iio/accel/Kconfig12
-rw-r--r--drivers/iio/accel/Makefile1
-rw-r--r--drivers/iio/accel/kxsd9-i2c.c63
3 files changed, 75 insertions, 1 deletions
diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index eebc20d6c827..8824400d4911 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -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
diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile
index 2fe41d7ffb6e..b5c2a0b5550f 100644
--- a/drivers/iio/accel/Makefile
+++ b/drivers/iio/accel/Makefile
@@ -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
diff --git a/drivers/iio/accel/kxsd9-i2c.c b/drivers/iio/accel/kxsd9-i2c.c
new file mode 100644
index 000000000000..4aaa27d0aa32
--- /dev/null
+++ b/drivers/iio/accel/kxsd9-i2c.c
@@ -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);