diff options
Diffstat (limited to 'include/linux/iio/iio.h')
| -rw-r--r-- | include/linux/iio/iio.h | 65 |
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 /** |