summaryrefslogtreecommitdiff
path: root/include/linux/iio/iio.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/iio/iio.h')
-rw-r--r--include/linux/iio/iio.h65
1 files changed, 58 insertions, 7 deletions
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index be82936c4089..c0ae76ac4e0b 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -35,10 +35,13 @@ enum iio_chan_info_enum {
IIO_CHAN_INFO_FREQUENCY,
IIO_CHAN_INFO_PHASE,
IIO_CHAN_INFO_HARDWAREGAIN,
+ IIO_CHAN_INFO_HYSTERESIS,
};
#define IIO_CHAN_INFO_SHARED_BIT(type) BIT(type*2)
#define IIO_CHAN_INFO_SEPARATE_BIT(type) BIT(type*2 + 1)
+#define IIO_CHAN_INFO_BITS(type) (IIO_CHAN_INFO_SHARED_BIT(type) | \
+ IIO_CHAN_INFO_SEPARATE_BIT(type))
#define IIO_CHAN_INFO_RAW_SEPARATE_BIT \
IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_RAW)
@@ -100,6 +103,10 @@ enum iio_chan_info_enum {
IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_HARDWAREGAIN)
#define IIO_CHAN_INFO_HARDWAREGAIN_SHARED_BIT \
IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_HARDWAREGAIN)
+#define IIO_CHAN_INFO_HYSTERESIS_SEPARATE_BIT \
+ IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_HYSTERESIS)
+#define IIO_CHAN_INFO_HYSTERESIS_SHARED_BIT \
+ IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_HYSTERESIS)
enum iio_endian {
IIO_CPU,
@@ -164,7 +171,7 @@ ssize_t iio_enum_write(struct iio_dev *indio_dev,
* IIO_ENUM() - Initialize enum extended channel attribute
* @_name: Attribute name
* @_shared: Whether the attribute is shared between all channels
- * @_e: Pointer to a iio_enum struct
+ * @_e: Pointer to an iio_enum struct
*
* This should usually be used together with IIO_ENUM_AVAILABLE()
*/
@@ -180,9 +187,9 @@ ssize_t iio_enum_write(struct iio_dev *indio_dev,
/**
* IIO_ENUM_AVAILABLE() - Initialize enum available extended channel attribute
* @_name: Attribute name ("_available" will be appended to the name)
- * @_e: Pointer to a iio_enum struct
+ * @_e: Pointer to an iio_enum struct
*
- * Creates a read only attribute which list all the available enum items in a
+ * Creates a read only attribute which lists all the available enum items in a
* space separated list. This should usually be used together with IIO_ENUM()
*/
#define IIO_ENUM_AVAILABLE(_name, _e) \
@@ -229,6 +236,7 @@ ssize_t iio_enum_write(struct iio_dev *indio_dev,
* @indexed: Specify the channel has a numerical index. If not,
* the channel index number will be suppressed for sysfs
* attributes but not for event codes.
+ * @output: Channel is output.
* @differential: Channel is differential.
*/
struct iio_chan_spec {
@@ -255,6 +263,21 @@ struct iio_chan_spec {
unsigned differential:1;
};
+
+/**
+ * iio_channel_has_info() - Checks whether a channel supports a info attribute
+ * @chan: The channel to be queried
+ * @type: Type of the info attribute to be checked
+ *
+ * Returns true if the channels supports reporting values for the given info
+ * attribute type, false otherwise.
+ */
+static inline bool iio_channel_has_info(const struct iio_chan_spec *chan,
+ enum iio_chan_info_enum type)
+{
+ return chan->info_mask & IIO_CHAN_INFO_BITS(type);
+}
+
#define IIO_ST(si, rb, sb, sh) \
{ .sign = si, .realbits = rb, .storagebits = sb, .shift = sh }
@@ -312,6 +335,9 @@ struct iio_dev;
* Meaning is event dependent.
* @validate_trigger: function to validate the trigger when the
* current trigger gets changed.
+ * @update_scan_mode: function to configure device and scan buffer when
+ * channels have changed
+ * @debugfs_reg_access: function to read or write register value of device
**/
struct iio_info {
struct module *driver_module;
@@ -367,10 +393,10 @@ struct iio_info {
* scan mask is valid for the device.
*/
struct iio_buffer_setup_ops {
- int (*preenable)(struct iio_dev *);
- int (*postenable)(struct iio_dev *);
- int (*predisable)(struct iio_dev *);
- int (*postdisable)(struct iio_dev *);
+ int (*preenable)(struct iio_dev *);
+ int (*postenable)(struct iio_dev *);
+ int (*predisable)(struct iio_dev *);
+ int (*postdisable)(struct iio_dev *);
bool (*validate_scan_mask)(struct iio_dev *indio_dev,
const unsigned long *scan_mask);
};
@@ -516,6 +542,31 @@ static inline struct iio_dev *iio_device_get(struct iio_dev *indio_dev)
return indio_dev ? dev_to_iio_dev(get_device(&indio_dev->dev)) : NULL;
}
+
+/**
+ * iio_device_set_drvdata() - Set device driver data
+ * @indio_dev: IIO device structure
+ * @data: Driver specific data
+ *
+ * Allows to attach an arbitrary pointer to an IIO device, which can later be
+ * retrieved by iio_device_get_drvdata().
+ */
+static inline void iio_device_set_drvdata(struct iio_dev *indio_dev, void *data)
+{
+ dev_set_drvdata(&indio_dev->dev, data);
+}
+
+/**
+ * iio_device_get_drvdata() - Get device driver data
+ * @indio_dev: IIO device structure
+ *
+ * Returns the data previously set with iio_device_set_drvdata()
+ */
+static inline void *iio_device_get_drvdata(struct iio_dev *indio_dev)
+{
+ return dev_get_drvdata(&indio_dev->dev);
+}
+
/* Can we make this smaller? */
#define IIO_ALIGN L1_CACHE_BYTES
/**