Merge tag 'iio-for-3.17c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

3rd round of IIO new drivers, cleanups and functionality for the 3.17 cycle.

New drivers
* isl29125 digital color light sensor driver
* TAOS/AMS tcs3414 digital color sensor

Staging graduation
* ad7291 ADC driver.

New functionality
* st_sensors - device tree support and bindings
* mma8452 - device tree support

Cleanups
* Drop redundant variables in a number of drivers.
* Reorder a structure definition to ealy wiht a warning about static
  not being at the beginning in the hid-sensors driver.
* Switch a few more drivers away from using explicit sampling_frequency
  attribute to providing this through the core.
* Make hid_sensor_get_reporting_interval static as only used within a single
  file.
* Drop a redundant check for negative values in an unsigned variable from
  ad9832
* Drop some duplicate case labels in the event monitor example code.
* Use devm_ioremap_resource to simplify error handling.
* Use devm_kzalloc within the blackfin timer driver to simplify error
  handling and removal.
* A number of cleanups of the ad7291 from Hartmut Knaack in response
  to a patch moving it out of staging.
* Core support for the period info element about events.  It has been
  in the abi for a while, but not added until now to the newer handling
  of information related to events.
* Add HAS_IOMEM dependency to mxs_lradc to avoid build issues when testing
  enabled.

2 files changed, 33 insertions, 2 deletions

diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c
index 240a21dd0c61..a4b64130ac2f 100644
--- a/drivers/iio/magnetometer/st_magn_core.c
+++ b/drivers/iio/magnetometer/st_magn_core.c
@@ -299,6 +299,9 @@ static int st_magn_read_raw(struct iio_dev *indio_dev,
 		else
 			*val2 = mdata->current_fullscale->gain;
 		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = mdata->odr;
+		return IIO_VAL_INT;
 	default:
 		return -EINVAL;
 	}
@@ -316,6 +319,13 @@ static int st_magn_write_raw(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_SCALE:
 		err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
 		break;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		if (val2)
+			return -EINVAL;
+		mutex_lock(&indio_dev->mlock);
+		err = st_sensors_set_odr(indio_dev, val);
+		mutex_unlock(&indio_dev->mlock);
+		return err;
 	default:
 		err = -EINVAL;
 	}
@@ -323,14 +333,12 @@ static int st_magn_write_raw(struct iio_dev *indio_dev,
 	return err;
 }
 
-static ST_SENSOR_DEV_ATTR_SAMP_FREQ();
 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_magn_scale_available);
 
 static struct attribute *st_magn_attributes[] = {
 	&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
 	&iio_dev_attr_in_magn_scale_available.dev_attr.attr,
-	&iio_dev_attr_sampling_frequency.dev_attr.attr,
 	NULL,
 };
 
diff --git a/drivers/iio/magnetometer/st_magn_i2c.c b/drivers/iio/magnetometer/st_magn_i2c.c
index 892e0feeb5c1..689250058442 100644
--- a/drivers/iio/magnetometer/st_magn_i2c.c
+++ b/drivers/iio/magnetometer/st_magn_i2c.c
@@ -18,6 +18,27 @@
 #include <linux/iio/common/st_sensors_i2c.h>
 #include "st_magn.h"
 
+#ifdef CONFIG_OF
+static const struct of_device_id st_magn_of_match[] = {
+	{
+		.compatible = "st,lsm303dlhc-magn",
+		.data = LSM303DLHC_MAGN_DEV_NAME,
+	},
+	{
+		.compatible = "st,lsm303dlm-magn",
+		.data = LSM303DLM_MAGN_DEV_NAME,
+	},
+	{
+		.compatible = "st,lis3mdl-magn",
+		.data = LIS3MDL_MAGN_DEV_NAME,
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, st_magn_of_match);
+#else
+#define st_magn_of_match NULL
+#endif
+
 static int st_magn_i2c_probe(struct i2c_client *client,
 						const struct i2c_device_id *id)
 {
@@ -31,6 +52,7 @@ static int st_magn_i2c_probe(struct i2c_client *client,
 
 	mdata = iio_priv(indio_dev);
 	mdata->dev = &client->dev;
+	st_sensors_of_i2c_probe(client, st_magn_of_match);
 
 	st_sensors_i2c_configure(indio_dev, client, mdata);
 
@@ -61,6 +83,7 @@ static struct i2c_driver st_magn_driver = {
 	.driver = {
 		.owner = THIS_MODULE,
 		.name = "st-magn-i2c",
+		.of_match_table = of_match_ptr(st_magn_of_match),
 	},
 	.probe = st_magn_i2c_probe,
 	.remove = st_magn_i2c_remove,