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authorLars-Peter Clausen <lars@metafoo.de>2013-03-25 08:58:00 +0000
committerJonathan Cameron <jic23@kernel.org>2013-03-25 21:06:09 +0000
commit1e9663c62b32f695af37fec4afc473b59f5ca9b4 (patch)
tree8f1c1c9fbaa89c3f75ad14a04dd8ee20ecb6dba0 /include/linux/iio
parentc5cf4606b6659e711258b6e567415ab83a3b646c (diff)
iio:trigger: Introduce iio_tigger_{set,get}_drvdata
Introduce iio_tigger_{set,get}_drvdata which allows to attach driver specific data to a trigger. The functions wrap access to the triggers private_data field and all current users are updated to use iio_tigger_{set,get}_drvdata instead of directly accessing the private_data field. This is the first step towards removing the private_data field from the iio_trigger struct. The following coccinelle script has been used to update the drivers: <smpl> @@ struct iio_trigger *trigger; expression priv; @@ -trigger->private_data = priv +iio_trigger_set_drv_data(trigger, priv) @@ struct iio_trigger *trigger; @@ -trigger->private_data +iio_trigger_get_drv_data(trigger) </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'include/linux/iio')
-rw-r--r--include/linux/iio/trigger.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/iio/trigger.h b/include/linux/iio/trigger.h
index c66e0a96f6e8..b81948aba1d6 100644
--- a/include/linux/iio/trigger.h
+++ b/include/linux/iio/trigger.h
@@ -92,6 +92,30 @@ static inline void iio_trigger_get(struct iio_trigger *trig)
}
/**
+ * iio_device_set_drvdata() - Set trigger driver data
+ * @trig: IIO trigger structure
+ * @data: Driver specific data
+ *
+ * Allows to attach an arbitrary pointer to an IIO trigger, which can later be
+ * retrieved by iio_trigger_get_drvdata().
+ */
+static inline void iio_trigger_set_drvdata(struct iio_trigger *trig, void *data)
+{
+ trig->private_data = data;
+}
+
+/**
+ * iio_trigger_get_drvdata() - Get trigger driver data
+ * @trig: IIO trigger structure
+ *
+ * Returns the data previously set with iio_trigger_set_drvdata()
+ */
+static inline void *iio_trigger_get_drvdata(struct iio_trigger *trig)
+{
+ return trig->private_data;
+}
+
+/**
* iio_trigger_register() - register a trigger with the IIO core
* @trig_info: trigger to be registered
**/