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Staging: iio: lots of doc fixes 

Fix iio header files kernel-doc notation errors, spelling, typos,
indentation, grammar, etc.

It would also be good if these function names were spelled
correctly, but I didn't change them:
  iio_push_or_escallate_ring_event()
  iio_trigger_dettach_poll_func()

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Randy Dunlap 2009-10-04 19:34:02 -07:00 committed by Greg Kroah-Hartman
parent 7e0463839c
commit 4c57260508
7 changed files with 228 additions and 110 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/staging/iio/chrdev.h
View File

@ -75,10 +75,12 @@ struct iio_shared_ev_pointer {
* @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;
@ -105,7 +107,7 @@ struct iio_event_interface {
* @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;

24
drivers/staging/iio/iio.h
View File

@ -239,7 +239,7 @@ void iio_unregister_interrupt_line(struct iio_dev *dev_info,
* @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,
@ -273,9 +273,9 @@ struct iio_work_cont {
* @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,
@ -290,7 +290,7 @@ 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
@ -302,8 +302,8 @@ int __iio_push_event(struct iio_event_interface *ev_int,
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
**/
@ -312,7 +312,7 @@ void __iio_change_event(struct iio_detected_event_list *ev,
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
@ -343,7 +343,7 @@ extern dev_t iio_devt;
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)
@ -353,7 +353,7 @@ 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)
@ -377,6 +377,7 @@ struct iio_dev *iio_allocate_device(void);
/**
* 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);
@ -395,7 +396,8 @@ int iio_device_get_chrdev_minor(void);
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)
{

61
drivers/staging/iio/ring_generic.h
View File

@ -25,9 +25,12 @@ int iio_push_ring_event(struct iio_ring_buffer *ring_buf,
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.
**/
@ -37,10 +40,6 @@ int iio_push_or_escallate_ring_event(struct iio_ring_buffer *ring_buf,
/**
* 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
@ -60,7 +59,7 @@ int iio_push_or_escallate_ring_event(struct iio_ring_buffer *ring_buf,
*
* 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
@ -91,23 +90,25 @@ struct iio_ring_access_funcs {
/**
* struct iio_ring_buffer - general ring buffer structure
* @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_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
* 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;
@ -133,7 +134,10 @@ void iio_ring_buffer_init(struct iio_ring_buffer *ring,
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)
@ -171,7 +175,11 @@ struct iio_scan_el {
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
@ -184,12 +192,15 @@ ssize_t iio_scan_el_store(struct device *dev, struct device_attribute *attr,
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.
@ -214,8 +225,14 @@ ssize_t iio_scan_el_ts_store(struct device *dev, struct device_attribute *attr,
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) \
@ -230,7 +247,7 @@ ssize_t iio_scan_el_ts_show(struct device *dev, struct device_attribute *attr,
.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.
**/

68
drivers/staging/iio/ring_sw.h
View File

@ -36,52 +36,65 @@
#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.
@ -94,38 +107,53 @@ int iio_rip_sw_rb(struct iio_ring_buffer *r,
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)
{

114
drivers/staging/iio/sysfs.h
View File

@ -15,7 +15,7 @@
#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
@ -54,6 +54,7 @@ __init_iio_chrdev_minor_attr(struct iio_chrdev_minor_attr *minor_attr,
* 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;
@ -71,6 +72,8 @@ ssize_t iio_read_const_attr(struct device *dev,
/**
* 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;
@ -80,7 +83,7 @@ struct iio_const_attr {
#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), \
@ -108,102 +111,130 @@ struct iio_const_attr {
/* 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
@ -221,8 +252,14 @@ struct iio_const_attr {
.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
**/
@ -235,7 +272,12 @@ struct iio_const_attr {
.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 \
@ -251,10 +293,14 @@ struct iio_const_attr {
.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)
@ -269,19 +315,31 @@ struct iio_const_attr {
#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)

33
drivers/staging/iio/trigger.h
View File

@ -19,16 +19,18 @@
* @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;
@ -68,6 +70,9 @@ static inline void iio_get_trigger(struct iio_trigger *trig)
/**
* 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,
@ -79,6 +84,8 @@ ssize_t iio_trigger_read_name(struct device *dev,
/**
* 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);
@ -90,6 +97,7 @@ int iio_trigger_register(struct iio_trigger *trig_info);
/**
* iio_trigger_unregister() - unregister a trigger from the core
* @trig_info: trigger to be unregistered
**/
void iio_trigger_unregister(struct iio_trigger *trig_info);
@ -103,19 +111,21 @@ int iio_trigger_attach_poll_func(struct iio_trigger *trig,
/**
* 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
@ -127,11 +137,10 @@ void iio_trigger_notify_done(struct iio_trigger *);
* 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.
**/

8
drivers/staging/iio/trigger_consumer.h
View File

@ -10,12 +10,13 @@
#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);
@ -23,13 +24,14 @@ 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