* @current_events: number of events in detected list
* @id: indentifier to allow the event interface to know which
* physical line it corresponds to
+ * @attr: this chrdev's minor number sysfs attribute
* @owner: ensure the driver module owns the file, not iio
* @private: driver specific data
* @_name: used internally to store the sysfs name for minor id
* attribute
+ * @_attrname: the event interface's attribute name
*/
struct iio_event_interface {
struct device dev;
* @handler: event handler function - called on event if this
* event_handler is enabled.
*
- * Each device has one list of these per interrupt line
+ * Each device has one list of these per interrupt line.
**/
struct iio_event_handler_list {
struct list_head list;
* @bit: which number scan element is this
**/
static inline int iio_scan_mask_count_to_right(struct iio_dev *dev_info,
-int bit)
+ int bit)
{
int count = 0;
int mask = (1 << bit);
* @dev_info: IIO device structure
* @ev_line: Which event line (hardware interrupt)
* @ev_code: What event
- * @timestamp: When the event occured
+ * @timestamp: When the event occurred
**/
int iio_push_event(struct iio_dev *dev_info,
int ev_line,
/**
* struct iio_work_cont - container for when singleton handler case matters
- * @ws: [DEVICE]work_struct when not only possible event
- * @ws_nocheck: [DEVICE]work_struct when only possible event
- * @address: [DEVICE]associated register address
- * @mask: [DEVICE]associated mask for identifying event source
- * @st: [DEVICE]device specific state information
+ * @ws: [DEVICE] work_struct when not only possible event
+ * @ws_nocheck: [DEVICE] work_struct when only possible event
+ * @address: [DEVICE] associated register address
+ * @mask: [DEVICE] associated mask for identifying event source
+ * @st: [DEVICE] device specific state information
**/
struct iio_work_cont {
struct work_struct ws;
* @cont: the work container
* @_checkfunc: function called when there are multiple possible int sources
* @_nocheckfunc: function for when there is only one int source
- * @_add: driver dependant, typically a register address
- * @_mask: driver dependant, typically a bit mask for a register
- * @_st: driver dependant, typically pointer to a device state structure
+ * @_add: driver dependent, typically a register address
+ * @_mask: driver dependent, typically a bit mask for a register
+ * @_st: driver dependent, typically pointer to a device state structure
**/
static inline void
iio_init_work_cont(struct iio_work_cont *cont,
cont->st = _st;
}
/**
- * __iio_push_event() tries to add an event to the list associated with a chrdev
+ * __iio_push_event() - tries to add an event to the list associated with a chrdev
* @ev_int: the event interface to which we are pushing the event
* @ev_code: the outgoing event code
* @timestamp: timestamp of the event
struct iio_shared_ev_pointer*
shared_pointer_p);
/**
- * __iio_change_event() change an event code in case of event escallation
- * @ev: the evnet to be changed
+ * __iio_change_event() - change an event code in case of event escalation
+ * @ev: the event to be changed
* @ev_code: new event code
* @timestamp: new timestamp
**/
s64 timestamp);
/**
- * iio_setup_ev_int() Configure an event interface (chrdev)
+ * iio_setup_ev_int() - configure an event interface (chrdev)
* @name: name used for resulting sysfs directory etc.
* @ev_int: interface we are configuring
* @owner: module that is responsible for registering this ev_int
extern struct class iio_class;
/**
- * iio_put_device() - reference counted deallocated of struct device
+ * iio_put_device() - reference counted deallocation of struct device
* @dev: the iio_device containing the device
**/
static inline void iio_put_device(struct iio_dev *dev)
};
/**
- * to_iio_dev() - get iio_dev for which we have have the struct device
+ * to_iio_dev() - get iio_dev for which we have the struct device
* @d: the struct device
**/
static inline struct iio_dev *to_iio_dev(struct device *d)
/**
* iio_free_device() - free an iio_dev from a driver
+ * @dev: the iio_dev associated with the device
**/
void iio_free_device(struct iio_dev *dev);
void iio_device_free_chrdev_minor(int val);
/**
- * iio_ring_enabled() helper function to test if any form of ring enabled
+ * iio_ring_enabled() - helper function to test if any form of ring is enabled
+ * @dev_info: IIO device info structure for device
**/
static inline bool iio_ring_enabled(struct iio_dev *dev_info)
{
int event_code,
s64 timestamp);
/**
- * iio_push_or_escallate_ring_event() - escallate or add as appropriate
+ * iio_push_or_escallate_ring_event() - escalate or add as appropriate
+ * @ring_buf: ring buffer that is the event source
+ * @event_code: event indentification code
+ * @timestamp: time of event
*
- * Typical usecase is to escallate a 50% ring full to 75% full if noone has yet
+ * Typical usecase is to escalate a 50% ring full to 75% full if noone has yet
* read the first event. Clearly the 50% full is no longer of interest in
* typical use case.
**/
/**
* struct iio_ring_access_funcs - access functions for ring buffers.
- * @create: perform allocation
- * @init: get ring buffer ready for use
- * @_exit: reverse steps in init
- * @_free: deallocate ring buffer
* @mark_in_use: reference counting, typically to prevent module removal
* @unmark_in_use: reduce reference count when no longer using ring buffer
* @store_to: actually store stuff to the ring buffer
*
* The purpose of this structure is to make the ring buffer element
* modular as event for a given driver, different usecases may require
- * different ring designs (space efficiency vs speed for example.
+ * different ring designs (space efficiency vs speed for example).
*
* It is worth noting that a given ring implementation may only support a small
* proportion of these functions. The core code 'should' cope fine with any of
/**
* struct iio_ring_buffer - general ring buffer structure
- * @length: [DEVICE]number of datums in ring
- * @bpd: [DEVICE]size of individual datum including timestamp
- * @loopcount: [INTERN]number of times the ring has looped
- * @access_minor_name: [INTERN]store of name of the access chrdev minor number
- * sysfs attribute
- * @access_handler: [INTERN]chrdev access handling
- * @event_minor_name: [INTERN]store of name of the event chrdev minor number
- * sysfs attribute
- * @ev_int: [INTERN]chrdev interface for the event chrdev
- * @shared_ev_pointer: [INTERN]the shared event pointer to allow escalation of
+ * @dev: ring buffer device struct
+ * @access_dev: system device struct for the chrdev
+ * @indio_dev: industrial I/O device structure
+ * @owner: module that owns the ring buffer (for ref counting)
+ * @id: unique id number
+ * @access_id: device id number
+ * @length: [DEVICE] number of datums in ring
+ * @bpd: [DEVICE] size of individual datum including timestamp
+ * @loopcount: [INTERN] number of times the ring has looped
+ * @access_handler: [INTERN] chrdev access handling
+ * @ev_int: [INTERN] chrdev interface for the event chrdev
+ * @shared_ev_pointer: [INTERN] the shared event pointer to allow escalation of
* events
- * @ring_access: [DRIVER]ring access functions associated with the
+ * @access: [DRIVER] ring access functions associated with the
* implementation.
- * @ring_prenable: [DRIVER] function to run prior to marking ring enabled
- * @ring_postenable: [DRIVER] function to run after marking ring enabled
- * @ring_predisable: [DRIVER] function to run prior to marking ring disabled
- * @ring_postdisable: [DRIVER] function to run after marking ring disabled
+ * @preenable: [DRIVER] function to run prior to marking ring enabled
+ * @postenable: [DRIVER] function to run after marking ring enabled
+ * @predisable: [DRIVER] function to run prior to marking ring disabled
+ * @postdisable: [DRIVER] function to run after marking ring disabled
**/
struct iio_ring_buffer {
struct device dev;
struct iio_dev *dev_info);
/**
- * __iio_init_ring_buffer() - initialize common elements of ring buffers.
+ * __iio_init_ring_buffer() - initialize common elements of ring buffers
+ * @ring: ring buffer that is the event source
+ * @bytes_per_datum: size of individual datum including timestamp
+ * @length: number of datums in ring
**/
static inline void __iio_init_ring_buffer(struct iio_ring_buffer *ring,
int bytes_per_datum, int length)
container_of(_dev_attr, struct iio_scan_el, dev_attr);
/**
- * iio_scan_el_store() - sysfs scan element selection interface.
+ * iio_scan_el_store() - sysfs scan element selection interface
+ * @dev: the target device
+ * @attr: the device attribute that is being processed
+ * @buf: input from userspace
+ * @len: length of input
*
* A generic function used to enable various scan elements. In some
* devices explicit read commands for each channel mean this is merely
const char *buf, size_t len);
/**
* iio_scal_el_show() - sysfs interface to query whether a scan element is
- * is enabled or not.
+ * is enabled or not
+ * @dev: the target device
+ * @attr: the device attribute that is being processed
+ * @buf: output buffer
**/
ssize_t iio_scan_el_show(struct device *dev, struct device_attribute *attr,
char *buf);
/**
- * IIO_SCAN_EL: - declare and initialize a scan element without control func
+ * IIO_SCAN_EL - declare and initialize a scan element without control func
* @_name: identifying name. Resulting struct is iio_scan_el_##_name,
* sysfs element, scan_en_##_name.
* @_number: unique id number for the scan element.
ssize_t iio_scan_el_ts_show(struct device *dev, struct device_attribute *attr,
char *buf);
/**
- * IIO_SCAN_EL_C: - declare and initialize a scan element with a control func
+ * IIO_SCAN_EL_C - declare and initialize a scan element with a control func
*
+ * @_name: identifying name. Resulting struct is iio_scan_el_##_name,
+ * sysfs element, scan_en_##_name.
+ * @_number: unique id number for the scan element.
+ * @_bits: number of bits in the scan element result (used in mixed bit
+ * length devices).
+ * @_label: indentification variable used by drivers. Often a reg address.
* @_controlfunc: function used to notify hardware of whether state changes
**/
#define IIO_SCAN_EL_C(_name, _number, _bits, _label, _controlfunc) \
.set_state = _controlfunc, \
}
/**
- * IIO_SCAN_EL_TIMESTAMP: - declare a special scan element for timestamps
+ * IIO_SCAN_EL_TIMESTAMP - declare a special scan element for timestamps
*
* Odd one out. Handled slightly differently from other scan elements.
**/
#if defined CONFIG_IIO_SW_RING || defined CONFIG_IIO_SW_RING_MODULE
/**
- * iio_create_sw_rb() software ring buffer allocation
+ * iio_create_sw_rb() - software ring buffer allocation
* @r: pointer to ring buffer pointer
**/
int iio_create_sw_rb(struct iio_ring_buffer **r);
/**
- * iio_init_sw_rb() initialize the software ring buffer
+ * iio_init_sw_rb() - initialize the software ring buffer
* @r: pointer to a software ring buffer created by an
- * iio_create_sw_rb call.
+ * iio_create_sw_rb call
+ * @indio_dev: industrial I/O device structure
**/
int iio_init_sw_rb(struct iio_ring_buffer *r, struct iio_dev *indio_dev);
+
/**
- * iio_exit_sw_rb() reverse what was done in iio_init_sw_rb
+ * iio_exit_sw_rb() - reverse what was done in iio_init_sw_rb
+ * @r: pointer to a software ring buffer created by an
+ * iio_create_sw_rb call
**/
void iio_exit_sw_rb(struct iio_ring_buffer *r);
/**
- * iio_free_sw_rb() free memory occupied by the core ring buffer struct
+ * iio_free_sw_rb() - free memory occupied by the core ring buffer struct
+ * @r: pointer to a software ring buffer created by an
+ * iio_create_sw_rb call
**/
void iio_free_sw_rb(struct iio_ring_buffer *r);
/**
- * iio_mark_sw_rb_in_use() reference counting to prevent incorrect chances
+ * iio_mark_sw_rb_in_use() - reference counting to prevent incorrect chances
+ * @r: pointer to a software ring buffer created by an
+ * iio_create_sw_rb call
**/
void iio_mark_sw_rb_in_use(struct iio_ring_buffer *r);
/**
- * iio_unmark_sw_rb_in_use() notify the ring buffer that we don't care anymore
+ * iio_unmark_sw_rb_in_use() - notify the ring buffer that we don't care anymore
+ * @r: pointer to a software ring buffer created by an
+ * iio_create_sw_rb call
**/
void iio_unmark_sw_rb_in_use(struct iio_ring_buffer *r);
/**
- * iio_read_last_from_sw_rb() attempt to read the last stored datum from the rb
+ * iio_read_last_from_sw_rb() - attempt to read the last stored datum from the rb
+ * @r: pointer to a software ring buffer created by an
+ * iio_create_sw_rb call
+ * @data: where to store the last datum
**/
int iio_read_last_from_sw_rb(struct iio_ring_buffer *r, u8 *data);
/**
- * iio_store_to_sw_rb() store a new datum to the ring buffer
- * @rb: pointer to ring buffer instance
- * @data: the datum to be stored including timestamp if relevant.
- * @timestamp: timestamp which will be attached to buffer events if relevant.
+ * iio_store_to_sw_rb() - store a new datum to the ring buffer
+ * @r: pointer to ring buffer instance
+ * @data: the datum to be stored including timestamp if relevant
+ * @timestamp: timestamp which will be attached to buffer events if relevant
**/
int iio_store_to_sw_rb(struct iio_ring_buffer *r, u8 *data, s64 timestamp);
/**
- * iio_rip_sw_rb() attempt to read data from the ring buffer
+ * iio_rip_sw_rb() - attempt to read data from the ring buffer
* @r: ring buffer instance
* @count: number of datum's to try and read
* @data: where the data will be stored.
int *dead_offset);
/**
- * iio_request_update_sw_rb() update params if update needed
+ * iio_request_update_sw_rb() - update params if update needed
+ * @r: pointer to a software ring buffer created by an
+ * iio_create_sw_rb call
**/
int iio_request_update_sw_rb(struct iio_ring_buffer *r);
/**
- * iio_mark_update_needed_sw_rb() tell the ring buffer it needs a param update
+ * iio_mark_update_needed_sw_rb() - tell the ring buffer it needs a param update
+ * @r: pointer to a software ring buffer created by an
+ * iio_create_sw_rb call
**/
int iio_mark_update_needed_sw_rb(struct iio_ring_buffer *r);
/**
- * iio_get_bpd_sw_rb() get the datum size in bytes
+ * iio_get_bpd_sw_rb() - get the datum size in bytes
+ * @r: pointer to a software ring buffer created by an
+ * iio_create_sw_rb call
**/
int iio_get_bpd_sw_rb(struct iio_ring_buffer *r);
/**
- * iio_set_bpd_sw_rb() set the datum size in bytes
+ * iio_set_bpd_sw_rb() - set the datum size in bytes
+ * @r: pointer to a software ring buffer created by an
+ * iio_create_sw_rb call
+ * @bpd: bytes per datum value
**/
int iio_set_bpd_sw_rb(struct iio_ring_buffer *r, size_t bpd);
/**
- * iio_get_length_sw_rb() get how many datums the rb may contain
+ * iio_get_length_sw_rb() - get how many datums the rb may contain
+ * @r: pointer to a software ring buffer created by an
+ * iio_create_sw_rb call
**/
int iio_get_length_sw_rb(struct iio_ring_buffer *r);
/**
- * iio_set_length_sw_rb() set how many datums the rb may contain
+ * iio_set_length_sw_rb() - set how many datums the rb may contain
+ * @r: pointer to a software ring buffer created by an
+ * iio_create_sw_rb call
+ * @length: max number of data items for the ring buffer
**/
int iio_set_length_sw_rb(struct iio_ring_buffer *r, int length);
/**
- * iio_ring_sw_register_funcs() helper function to set up rb access
+ * iio_ring_sw_register_funcs() - helper function to set up rb access
+ * @ra: pointer to @iio_ring_access_funcs
**/
static inline void iio_ring_sw_register_funcs(struct iio_ring_access_funcs *ra)
{
#include "iio.h"
/**
- * struct iio_event_attribute - event control attribute
+ * struct iio_event_attr - event control attribute
* @dev_attr: underlying device attribute
* @mask: mask for the event when detecting
* @listel: list header to allow addition to list of event handlers
* struct iio_dev_attr - iio specific device attribute
* @dev_attr: underlying device attribute
* @address: associated register address
+ * @val2: secondary attribute value
*/
struct iio_dev_attr {
struct device_attribute dev_attr;
/**
* struct iio_const_attr - constant device specific attribute
* often used for things like available modes
+ * @string: attribute string
+ * @dev_attr: underlying device attribute
*/
struct iio_const_attr {
const char *string;
#define to_iio_const_attr(_dev_attr) \
container_of(_dev_attr, struct iio_const_attr, dev_attr)
-/* Some attributes will be hard coded (device dependant) and not require an
+/* Some attributes will be hard coded (device dependent) and not require an
address, in these cases pass a negative */
#define IIO_ATTR(_name, _mode, _show, _store, _addr) \
{ .dev_attr = __ATTR(_name, _mode, _show, _store), \
/* Generic attributes of onetype or another */
/**
- * IIO_DEV_ATTR_REG: revision number for the device
+ * IIO_DEV_ATTR_REV - revision number for the device
+ * @_show: output method for the attribute
*
* Very much device dependent.
**/
#define IIO_DEV_ATTR_REV(_show) \
IIO_DEVICE_ATTR(revision, S_IRUGO, _show, NULL, 0)
+
/**
- * IIO_DEV_ATTR_NAME: chip type dependant identifier
+ * IIO_DEV_ATTR_NAME - chip type dependent identifier
+ * @_show: output method for the attribute
**/
#define IIO_DEV_ATTR_NAME(_show) \
IIO_DEVICE_ATTR(name, S_IRUGO, _show, NULL, 0)
/**
- * IIO_DEV_ATTR_SAMP_FREQ: sets any internal clock frequency
+ * IIO_DEV_ATTR_SAMP_FREQ - sets any internal clock frequency
+ * @_mode: sysfs file mode/permissions
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
**/
#define IIO_DEV_ATTR_SAMP_FREQ(_mode, _show, _store) \
IIO_DEVICE_ATTR(sampling_frequency, _mode, _show, _store, 0)
/**
- * IIO_DEV_ATTR_AVAIL_SAMP_FREQ: list available sampling frequencies.
+ * IIO_DEV_ATTR_AVAIL_SAMP_FREQ - list available sampling frequencies
+ * @_show: output method for the attribute
*
- * May be mode dependant on some devices
+ * May be mode dependent on some devices
**/
#define IIO_DEV_ATTR_AVAIL_SAMP_FREQ(_show) \
IIO_DEVICE_ATTR(available_sampling_frequency, S_IRUGO, _show, NULL, 0)
/**
- * IIO_DEV_ATTR_CONST_AVAIL_SAMP_FREQ: list available sampling frequencies.
+ * IIO_CONST_ATTR_AVAIL_SAMP_FREQ - list available sampling frequencies
+ * @_string: frequency string for the attribute
*
* Constant version
**/
#define IIO_CONST_ATTR_AVAIL_SAMP_FREQ(_string) \
IIO_CONST_ATTR(available_sampling_frequency, _string)
+
/**
- * IIO_DEV_ATTR_SCAN_MODE: select a scan mode
+ * IIO_DEV_ATTR_SCAN_MODE - select a scan mode
+ * @_mode: sysfs file mode/permissions
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
*
* This is used when only certain combinations of inputs may be read in one
* scan.
**/
#define IIO_DEV_ATTR_SCAN_MODE(_mode, _show, _store) \
IIO_DEVICE_ATTR(scan_mode, _mode, _show, _store, 0)
+
/**
- * IIO_DEV_ATTR_AVAIL_SCAN_MODES: list available scan modes
+ * IIO_DEV_ATTR_AVAIL_SCAN_MODES - list available scan modes
+ * @_show: output method for the attribute
**/
#define IIO_DEV_ATTR_AVAIL_SCAN_MODES(_show) \
IIO_DEVICE_ATTR(available_scan_modes, S_IRUGO, _show, NULL, 0)
/**
- * IIO_DEV_ATTR_SCAN: result of scan of multiple channels
+ * IIO_DEV_ATTR_SCAN - result of scan of multiple channels
+ * @_show: output method for the attribute
**/
#define IIO_DEV_ATTR_SCAN(_show) \
IIO_DEVICE_ATTR(scan, S_IRUGO, _show, NULL, 0);
/**
- * IIO_DEV_ATTR_INPUT: direct read of a single input channel
+ * IIO_DEV_ATTR_INPUT - direct read of a single input channel
+ * @_number: input channel number
+ * @_show: output method for the attribute
**/
#define IIO_DEV_ATTR_INPUT(_number, _show) \
IIO_DEVICE_ATTR(in##_number, S_IRUGO, _show, NULL, _number)
-
/**
- * IIO_DEV_ATTR_SW_RING_ENABLE: enable software ring buffer
+ * IIO_DEV_ATTR_SW_RING_ENABLE - enable software ring buffer
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
*
- * Success may be dependant on attachment of trigger previously
+ * Success may be dependent on attachment of trigger previously.
**/
#define IIO_DEV_ATTR_SW_RING_ENABLE(_show, _store) \
IIO_DEVICE_ATTR(sw_ring_enable, S_IRUGO | S_IWUSR, _show, _store, 0)
/**
- * IIO_DEV_ATTR_HW_RING_ENABLE: enable hardware ring buffer
+ * IIO_DEV_ATTR_HW_RING_ENABLE - enable hardware ring buffer
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
*
- * This is a different attribute from the software one as one can invision
+ * This is a different attribute from the software one as one can envision
* schemes where a combination of the two may be used.
**/
#define IIO_DEV_ATTR_HW_RING_ENABLE(_show, _store) \
IIO_DEVICE_ATTR(hw_ring_enable, S_IRUGO | S_IWUSR, _show, _store, 0)
/**
- * IIO_DEV_ATTR_BPSE: set number of bits per scan element
+ * IIO_DEV_ATTR_BPSE - set number of bits per scan element
+ * @_mode: sysfs file mode/permissions
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
**/
#define IIO_DEV_ATTR_BPSE(_mode, _show, _store) \
IIO_DEVICE_ATTR(bpse, _mode, _show, _store, 0)
/**
- * IIO_DEV_ATTR_BPSE_AVAILABLE: no of bits per scan element supported
+ * IIO_DEV_ATTR_BPSE_AVAILABLE - number of bits per scan element supported
+ * @_show: output method for the attribute
**/
#define IIO_DEV_ATTR_BPSE_AVAILABLE(_show) \
IIO_DEVICE_ATTR(bpse_available, S_IRUGO, _show, NULL, 0)
/**
- * IIO_DEV_ATTR_TEMP: many sensors have auxiliary temperature sensors
+ * IIO_DEV_ATTR_TEMP - many sensors have auxiliary temperature sensors
+ * @_show: output method for the attribute
**/
#define IIO_DEV_ATTR_TEMP(_show) \
IIO_DEVICE_ATTR(temp, S_IRUGO, _show, NULL, 0)
+
/**
- * IIO_EVENT_SH: generic shared event handler
+ * IIO_EVENT_SH - generic shared event handler
+ * @_name: event name
+ * @_handler: handler function to be called
*
* This is used in cases where more than one event may result from a single
* handler. Often the case that some alarm register must be read and multiple
.prev = &iio_event_##_name.list, \
}, \
};
+
/**
- * IIO_EVENT_ATTR_SH: generic shared event attribute
+ * IIO_EVENT_ATTR_SH - generic shared event attribute
+ * @_name: event name
+ * @_ev_list: event handler list
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
+ * @_mask: mask used when detecting the event
*
* An attribute with an associated IIO_EVENT_SH
**/
.listel = &_ev_list };
/**
- * IIO_EVENT_ATTR: non shared event attribute
+ * IIO_EVENT_ATTR - non-shared event attribute
+ * @_name: event name
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
+ * @_mask: mask used when detecting the event
+ * @_handler: handler function to be called
**/
#define IIO_EVENT_ATTR(_name, _show, _store, _mask, _handler) \
static struct iio_event_handler_list \
.listel = &iio_event_##_name }; \
/**
- * IIO_EVENT_ATTR_DATA_RDY: event driven by data ready signal
+ * IIO_EVENT_ATTR_DATA_RDY - event driven by data ready signal
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
+ * @_mask: mask used when detecting the event
+ * @_handler: handler function to be called
*
* Not typically implemented in devices where full triggering support
- * has been implemented
+ * has been implemented.
**/
#define IIO_EVENT_ATTR_DATA_RDY(_show, _store, _mask, _handler) \
IIO_EVENT_ATTR(data_rdy, _show, _store, _mask, _handler)
#define IIO_EVENT_CODE_DEVICE_SPECIFIC 1000
/**
- * IIO_EVENT_ATTR_RING_50_FULL: ring buffer event to indicate 50% full
+ * IIO_EVENT_ATTR_RING_50_FULL - ring buffer event to indicate 50% full
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
+ * @_mask: mask used when detecting the event
+ * @_handler: handler function to be called
**/
#define IIO_EVENT_ATTR_RING_50_FULL(_show, _store, _mask, _handler) \
IIO_EVENT_ATTR(ring_50_full, _show, _store, _mask, _handler)
/**
- * IIO_EVENT_ATTR_RING_50_FULL_SH: shared ring event to indicate 50% full
+ * IIO_EVENT_ATTR_RING_50_FULL_SH - shared ring event to indicate 50% full
+ * @_evlist: event handler list
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
+ * @_mask: mask used when detecting the event
**/
#define IIO_EVENT_ATTR_RING_50_FULL_SH(_evlist, _show, _store, _mask) \
IIO_EVENT_ATTR_SH(ring_50_full, _evlist, _show, _store, _mask)
/**
- * IIO_EVENT_ATTR_RING_75_FULL_SH: shared ring event to indicate 75% full
+ * IIO_EVENT_ATTR_RING_75_FULL_SH - shared ring event to indicate 75% full
+ * @_evlist: event handler list
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
+ * @_mask: mask used when detecting the event
**/
#define IIO_EVENT_ATTR_RING_75_FULL_SH(_evlist, _show, _store, _mask) \
IIO_EVENT_ATTR_SH(ring_75_full, _evlist, _show, _store, _mask)
* @id: [INTERN] unique id number
* @name: [DRIVER] unique name
* @dev: [DRIVER] associated device (if relevant)
- * @sysfs_dev: [INTERN] sysfs relevant device
* @private_data: [DRIVER] device specific data
* @list: [INTERN] used in maintenance of global trigger list
* @alloc_list: [DRIVER] used for driver specific trigger list
- * @poll_func_list_lock:[INTERN] protection of the polling function list
+ * @pollfunc_list_lock: [INTERN] protection of the polling function list
* @pollfunc_list: [INTERN] list of functions to run on trigger.
* @control_attrs: [DRIVER] sysfs attributes relevant to trigger type
- * @set_trigger_state: [DRIVER] switch on/off the trigger on demand
* @timestamp: [INTERN] timestamp usesd by some trigs (e.g. datardy)
* @owner: [DRIVER] used to monitor usage count of the trigger.
+ * @use_count: use count for the trigger
+ * @set_trigger_state: [DRIVER] switch on/off the trigger on demand
+ * @try_reenable: function to reenable the trigger when the
+ * use count is zero (may be NULL)
**/
struct iio_trigger {
int id;
/**
* iio_trigger_read_name() - sysfs access function to get the trigger name
+ * @dev: the system device
+ * @attr: device attributes for the device
+ * @buf: output buffer to store the trigger name
**/
ssize_t iio_trigger_read_name(struct device *dev,
struct device_attribute *attr,
/**
* iio_trigger_find_by_name() - search global trigger list
+ * @name: trigger name to search for
+ * @len: trigger name string length to compare
**/
struct iio_trigger *iio_trigger_find_by_name(const char *name, size_t len);
/**
* iio_trigger_unregister() - unregister a trigger from the core
+ * @trig_info: trigger to be unregistered
**/
void iio_trigger_unregister(struct iio_trigger *trig_info);
/**
* iio_trigger_attach_poll_func() - add a function pair to be run on trigger
* @trig: trigger to which the function pair are being added
- * @pf: poll function pair
+ * @pf: poll function pair
**/
int iio_trigger_attach_poll_func(struct iio_trigger *trig,
struct iio_poll_func *pf);
/**
* iio_trigger_dettach_poll_func() - remove function pair from those to be
- * run on trigger.
- * @trig: trigger from which the function is being removed.
+ * run on trigger
+ * @trig: trigger from which the function is being removed
* @pf: poll function pair
**/
int iio_trigger_dettach_poll_func(struct iio_trigger *trig,
struct iio_poll_func *pf);
/**
- * iio_trigger_poll() - called on a trigger occuring
+ * iio_trigger_poll() - called on a trigger occurring
+ * @trig: trigger which occurred
+ *
* Typically called in relevant hardware interrupt handler.
**/
-void iio_trigger_poll(struct iio_trigger *);
-void iio_trigger_notify_done(struct iio_trigger *);
+void iio_trigger_poll(struct iio_trigger *trig);
+void iio_trigger_notify_done(struct iio_trigger *trig);
/**
* struct iio_poll_func - poll function pair
* control on sensor supporting it.
* @poll_func_main: function in here is run after all immediates.
* Reading from sensor etc typically involves
- * scheduling
- * from here.
+ * scheduling from here.
*
- * The two stage approach used here only important when multiple sensors are
- * being triggered by a single trigger. This really comes into it's own with
+ * The two stage approach used here is only important when multiple sensors are
+ * being triggered by a single trigger. This really comes into its own with
* simultaneous sampling devices where a simple latch command can be used to
* make the device store the values on all inputs.
**/
#ifdef CONFIG_IIO_TRIGGER
/**
- * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers.
+ * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
* @dev_info: iio_dev associated with the device that will consume the trigger
**/
int iio_device_register_trigger_consumer(struct iio_dev *dev_info);
+
/**
- * iio_device_unregister_trigger_consumer() - reverse the registration process.
+ * iio_device_unregister_trigger_consumer() - reverse the registration process
* @dev_info: iio_dev associated with the device that consumed the trigger
**/
int iio_device_unregister_trigger_consumer(struct iio_dev *dev_info);
#else
/**
- * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers.
+ * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
* @dev_info: iio_dev associated with the device that will consume the trigger
**/
int iio_device_register_trigger_consumer(struct iio_dev *dev_info)
{
return 0;
};
+
/**
* iio_device_unregister_trigger_consumer() - reverse the registration process
* @dev_info: iio_dev associated with the device that consumed the trigger
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff