[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / iio / sysfs.h

/* The industrial I/O core
 *
 *Copyright (c) 2008 Jonathan Cameron
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * General attributes
 */

#ifndef _INDUSTRIAL_IO_SYSFS_H_
#define _INDUSTRIAL_IO_SYSFS_H_

#include "iio.h"

/**
 * 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_event_attr {
	struct device_attribute dev_attr;
	int mask;
	struct iio_event_handler_list *listel;
};

#define to_iio_event_attr(_dev_attr) \
	container_of(_dev_attr, struct iio_event_attr, dev_attr)

/**
 * struct iio_chrdev_minor_attr - simple attribute to allow reading of chrdev
 *				minor number
 * @dev_attr:	underlying device attribute
 * @minor:	the minor number
 */
struct iio_chrdev_minor_attr {
	struct device_attribute dev_attr;
	int minor;
};

void
__init_iio_chrdev_minor_attr(struct iio_chrdev_minor_attr *minor_attr,
			   const char *name,
			   struct module *owner,
			   int id);


#define to_iio_chrdev_minor_attr(_dev_attr) \
	container_of(_dev_attr, struct iio_chrdev_minor_attr, dev_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;
	int address;
	int val2;
};

#define to_iio_dev_attr(_dev_attr)				\
	container_of(_dev_attr, struct iio_dev_attr, dev_attr)

ssize_t iio_read_const_attr(struct device *dev,
			    struct device_attribute *attr,
			    char *len);

/**
 * 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;
	struct device_attribute dev_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 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),	\
	  .address = _addr }

#define IIO_ATTR_2(_name, _mode, _show, _store, _addr, _val2)	\
	{ .dev_attr = __ATTR(_name, _mode, _show, _store),	\
			.address = _addr,			\
			.val2 = _val2 }

#define IIO_DEVICE_ATTR(_name, _mode, _show, _store, _addr)	\
	struct iio_dev_attr iio_dev_attr_##_name		\
	= IIO_ATTR(_name, _mode, _show, _store, _addr)


#define IIO_DEVICE_ATTR_2(_name, _mode, _show, _store, _addr, _val2)	\
	struct iio_dev_attr iio_dev_attr_##_name			\
	= IIO_ATTR_2(_name, _mode, _show, _store, _addr, _val2)

#define IIO_CONST_ATTR(_name, _string)					\
	struct iio_const_attr iio_const_attr_##_name			\
	= { .string = _string,						\
	    .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)}

/* Generic attributes of onetype or another */

/**
 * 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 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
 * @_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
 * @_show: output method for the attribute
 *
 * 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_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
 * @_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
 * @_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
 * @_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
 * @_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
 * @_show: output method for the attribute
 * @_store: input method for the attribute
 *
 * 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
 * @_show: output method for the attribute
 * @_store: input method for the attribute
 *
 * 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
 * @_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 - 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
 * @_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
 * @_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
 * alarms may have been triggered.
 **/
#define IIO_EVENT_SH(_name, _handler)					\
	static struct iio_event_handler_list				\
	iio_event_##_name = {						\
		.handler = _handler,					\
		.refcount = 0,						\
		.exist_lock = __MUTEX_INITIALIZER(iio_event_##_name	\
						  .exist_lock),		\
		.list = {						\
			.next = &iio_event_##_name.list,		\
			.prev = &iio_event_##_name.list,		\
		},							\
	};

/**
 * 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
 **/
#define IIO_EVENT_ATTR_SH(_name, _ev_list, _show, _store, _mask)	\
	static struct iio_event_attr					\
	iio_event_attr_##_name						\
	= { .dev_attr = __ATTR(_name, S_IRUGO | S_IWUSR,		\
			       _show, _store),				\
	    .mask = _mask,						\
	    .listel = &_ev_list };

/**
 * 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				\
	iio_event_##_name = {						\
		.handler = _handler,					\
	};								\
	static struct							\
	iio_event_attr							\
	iio_event_attr_##_name						\
	= { .dev_attr = __ATTR(_name, S_IRUGO | S_IWUSR,		\
			       _show, _store),				\
	    .mask = _mask,						\
	    .listel = &iio_event_##_name };				\

/**
 * 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.
 **/
#define IIO_EVENT_ATTR_DATA_RDY(_show, _store, _mask, _handler) \
	IIO_EVENT_ATTR(data_rdy, _show, _store, _mask, _handler)

#define IIO_EVENT_CODE_DATA_RDY		100
#define IIO_EVENT_CODE_RING_BASE	200
#define IIO_EVENT_CODE_ACCEL_BASE	300
#define IIO_EVENT_CODE_GYRO_BASE	400
#define IIO_EVENT_CODE_ADC_BASE		500
#define IIO_EVENT_CODE_MISC_BASE	600

#define IIO_EVENT_CODE_DEVICE_SPECIFIC	1000

/**
 * 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
 * @_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
 * @_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)

#define IIO_EVENT_CODE_RING_50_FULL	IIO_EVENT_CODE_RING_BASE
#define IIO_EVENT_CODE_RING_75_FULL	(IIO_EVENT_CODE_RING_BASE + 1)
#define IIO_EVENT_CODE_RING_100_FULL	(IIO_EVENT_CODE_RING_BASE + 2)

#endif /* _INDUSTRIAL_IO_SYSFS_H_ */
Commit	Line	Data
847ec80b JC	1	/* The industrial I/O core
	2	*
	3	*Copyright (c) 2008 Jonathan Cameron
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms of the GNU General Public License version 2 as published by
	7	* the Free Software Foundation.
	8	*
	9	* General attributes
	10	*/
	11
	12	#ifndef _INDUSTRIAL_IO_SYSFS_H_
	13	#define _INDUSTRIAL_IO_SYSFS_H_
	14
	15	#include "iio.h"
	16
	17	/**
4c572605	18	* struct iio_event_attr - event control attribute
847ec80b JC	19	* @dev_attr: underlying device attribute
	20	* @mask: mask for the event when detecting
	21	* @listel: list header to allow addition to list of event handlers
	22	*/
	23	struct iio_event_attr {
	24	struct device_attribute dev_attr;
	25	int mask;
	26	struct iio_event_handler_list *listel;
	27	};
	28
	29	#define to_iio_event_attr(_dev_attr) \
	30	container_of(_dev_attr, struct iio_event_attr, dev_attr)
	31
	32	/**
	33	* struct iio_chrdev_minor_attr - simple attribute to allow reading of chrdev
	34	* minor number
	35	* @dev_attr: underlying device attribute
	36	* @minor: the minor number
	37	*/
	38	struct iio_chrdev_minor_attr {
	39	struct device_attribute dev_attr;
	40	int minor;
	41	};
	42
	43	void
	44	__init_iio_chrdev_minor_attr(struct iio_chrdev_minor_attr *minor_attr,
	45	const char *name,
	46	struct module *owner,
	47	int id);
	48
	49
	50	#define to_iio_chrdev_minor_attr(_dev_attr) \
	51	container_of(_dev_attr, struct iio_chrdev_minor_attr, dev_attr);
	52
	53	/**
	54	* struct iio_dev_attr - iio specific device attribute
	55	* @dev_attr: underlying device attribute
	56	* @address: associated register address
4c572605	57	* @val2: secondary attribute value
847ec80b JC	58	*/
	59	struct iio_dev_attr {
	60	struct device_attribute dev_attr;
	61	int address;
	62	int val2;
	63	};
	64
	65	#define to_iio_dev_attr(_dev_attr) \
	66	container_of(_dev_attr, struct iio_dev_attr, dev_attr)
	67
	68	ssize_t iio_read_const_attr(struct device *dev,
	69	struct device_attribute *attr,
	70	char *len);
	71
	72	/**
	73	* struct iio_const_attr - constant device specific attribute
	74	* often used for things like available modes
4c572605 RD	75	* @string: attribute string
4c572605 RD	76	* @dev_attr: underlying device attribute
847ec80b JC	77	*/
	78	struct iio_const_attr {
	79	const char *string;
	80	struct device_attribute dev_attr;
	81	};
	82
	83	#define to_iio_const_attr(_dev_attr) \
	84	container_of(_dev_attr, struct iio_const_attr, dev_attr)
	85
4c572605	86	/* Some attributes will be hard coded (device dependent) and not require an
847ec80b JC	87	address, in these cases pass a negative */
	88	#define IIO_ATTR(_name, _mode, _show, _store, _addr) \
	89	{ .dev_attr = __ATTR(_name, _mode, _show, _store), \
	90	.address = _addr }
	91
	92	#define IIO_ATTR_2(_name, _mode, _show, _store, _addr, _val2) \
	93	{ .dev_attr = __ATTR(_name, _mode, _show, _store), \
	94	.address = _addr, \
	95	.val2 = _val2 }
	96
	97	#define IIO_DEVICE_ATTR(_name, _mode, _show, _store, _addr) \
	98	struct iio_dev_attr iio_dev_attr_##_name \
	99	= IIO_ATTR(_name, _mode, _show, _store, _addr)
	100
	101
	102	#define IIO_DEVICE_ATTR_2(_name, _mode, _show, _store, _addr, _val2) \
	103	struct iio_dev_attr iio_dev_attr_##_name \
	104	= IIO_ATTR_2(_name, _mode, _show, _store, _addr, _val2)
	105
	106	#define IIO_CONST_ATTR(_name, _string) \
	107	struct iio_const_attr iio_const_attr_##_name \
	108	= { .string = _string, \
	109	.dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)}
	110
	111	/* Generic attributes of onetype or another */
	112
	113	/**
4c572605 RD	114	* IIO_DEV_ATTR_REV - revision number for the device
4c572605 RD	115	* @_show: output method for the attribute
847ec80b JC	116	*
	117	* Very much device dependent.
	118	**/
	119	#define IIO_DEV_ATTR_REV(_show) \
	120	IIO_DEVICE_ATTR(revision, S_IRUGO, _show, NULL, 0)
4c572605	121
847ec80b	122	/**
4c572605 RD	123	* IIO_DEV_ATTR_NAME - chip type dependent identifier
4c572605 RD	124	* @_show: output method for the attribute
847ec80b JC	125	**/
	126	#define IIO_DEV_ATTR_NAME(_show) \
	127	IIO_DEVICE_ATTR(name, S_IRUGO, _show, NULL, 0)
	128
	129	/**
4c572605 RD	130	* IIO_DEV_ATTR_SAMP_FREQ - sets any internal clock frequency
	131	* @_mode: sysfs file mode/permissions
	132	* @_show: output method for the attribute
	133	* @_store: input method for the attribute
847ec80b JC	134	**/
	135	#define IIO_DEV_ATTR_SAMP_FREQ(_mode, _show, _store) \
	136	IIO_DEVICE_ATTR(sampling_frequency, _mode, _show, _store, 0)
	137
	138	/**
4c572605 RD	139	* IIO_DEV_ATTR_AVAIL_SAMP_FREQ - list available sampling frequencies
4c572605 RD	140	* @_show: output method for the attribute
847ec80b	141	*
4c572605	142	* May be mode dependent on some devices
847ec80b JC	143	**/
	144	#define IIO_DEV_ATTR_AVAIL_SAMP_FREQ(_show) \
	145	IIO_DEVICE_ATTR(available_sampling_frequency, S_IRUGO, _show, NULL, 0)
	146
	147	/**
4c572605 RD	148	* IIO_CONST_ATTR_AVAIL_SAMP_FREQ - list available sampling frequencies
4c572605 RD	149	* @_string: frequency string for the attribute
847ec80b JC	150	*
	151	* Constant version
	152	**/
	153	#define IIO_CONST_ATTR_AVAIL_SAMP_FREQ(_string) \
	154	IIO_CONST_ATTR(available_sampling_frequency, _string)
4c572605	155
847ec80b	156	/**
4c572605 RD	157	* IIO_DEV_ATTR_SCAN_MODE - select a scan mode
	158	* @_mode: sysfs file mode/permissions
	159	* @_show: output method for the attribute
	160	* @_store: input method for the attribute
847ec80b JC	161	*
	162	* This is used when only certain combinations of inputs may be read in one
	163	* scan.
	164	**/
	165	#define IIO_DEV_ATTR_SCAN_MODE(_mode, _show, _store) \
	166	IIO_DEVICE_ATTR(scan_mode, _mode, _show, _store, 0)
4c572605	167
847ec80b	168	/**
4c572605 RD	169	* IIO_DEV_ATTR_AVAIL_SCAN_MODES - list available scan modes
4c572605 RD	170	* @_show: output method for the attribute
847ec80b JC	171	**/
	172	#define IIO_DEV_ATTR_AVAIL_SCAN_MODES(_show) \
	173	IIO_DEVICE_ATTR(available_scan_modes, S_IRUGO, _show, NULL, 0)
	174
	175	/**
4c572605 RD	176	* IIO_DEV_ATTR_SCAN - result of scan of multiple channels
4c572605 RD	177	* @_show: output method for the attribute
847ec80b JC	178	**/
	179	#define IIO_DEV_ATTR_SCAN(_show) \
	180	IIO_DEVICE_ATTR(scan, S_IRUGO, _show, NULL, 0);
	181
	182	/**
4c572605 RD	183	* IIO_DEV_ATTR_INPUT - direct read of a single input channel
	184	* @_number: input channel number
	185	* @_show: output method for the attribute
847ec80b JC	186	**/
	187	#define IIO_DEV_ATTR_INPUT(_number, _show) \
	188	IIO_DEVICE_ATTR(in##_number, S_IRUGO, _show, NULL, _number)
	189
847ec80b	190	/**
4c572605 RD	191	* IIO_DEV_ATTR_SW_RING_ENABLE - enable software ring buffer
	192	* @_show: output method for the attribute
	193	* @_store: input method for the attribute
847ec80b	194	*
4c572605	195	* Success may be dependent on attachment of trigger previously.
847ec80b JC	196	**/
	197	#define IIO_DEV_ATTR_SW_RING_ENABLE(_show, _store) \
	198	IIO_DEVICE_ATTR(sw_ring_enable, S_IRUGO \| S_IWUSR, _show, _store, 0)
	199
	200	/**
4c572605 RD	201	* IIO_DEV_ATTR_HW_RING_ENABLE - enable hardware ring buffer
	202	* @_show: output method for the attribute
	203	* @_store: input method for the attribute
847ec80b	204	*
4c572605	205	* This is a different attribute from the software one as one can envision
847ec80b JC	206	* schemes where a combination of the two may be used.
	207	**/
	208	#define IIO_DEV_ATTR_HW_RING_ENABLE(_show, _store) \
	209	IIO_DEVICE_ATTR(hw_ring_enable, S_IRUGO \| S_IWUSR, _show, _store, 0)
	210
	211	/**
4c572605 RD	212	* IIO_DEV_ATTR_BPSE - set number of bits per scan element
	213	* @_mode: sysfs file mode/permissions
	214	* @_show: output method for the attribute
	215	* @_store: input method for the attribute
847ec80b JC	216	**/
	217	#define IIO_DEV_ATTR_BPSE(_mode, _show, _store) \
	218	IIO_DEVICE_ATTR(bpse, _mode, _show, _store, 0)
	219
	220	/**
4c572605 RD	221	* IIO_DEV_ATTR_BPSE_AVAILABLE - number of bits per scan element supported
4c572605 RD	222	* @_show: output method for the attribute
847ec80b JC	223	**/
	224	#define IIO_DEV_ATTR_BPSE_AVAILABLE(_show) \
	225	IIO_DEVICE_ATTR(bpse_available, S_IRUGO, _show, NULL, 0)
	226
	227	/**
4c572605 RD	228	* IIO_DEV_ATTR_TEMP - many sensors have auxiliary temperature sensors
4c572605 RD	229	* @_show: output method for the attribute
847ec80b JC	230	**/
	231	#define IIO_DEV_ATTR_TEMP(_show) \
	232	IIO_DEVICE_ATTR(temp, S_IRUGO, _show, NULL, 0)
4c572605	233
847ec80b	234	/**
4c572605 RD	235	* IIO_EVENT_SH - generic shared event handler
	236	* @_name: event name
	237	* @_handler: handler function to be called
847ec80b JC	238	*
	239	* This is used in cases where more than one event may result from a single
	240	* handler. Often the case that some alarm register must be read and multiple
	241	* alarms may have been triggered.
	242	**/
	243	#define IIO_EVENT_SH(_name, _handler) \
	244	static struct iio_event_handler_list \
	245	iio_event_##_name = { \
	246	.handler = _handler, \
	247	.refcount = 0, \
	248	.exist_lock = __MUTEX_INITIALIZER(iio_event_##_name \
	249	.exist_lock), \
	250	.list = { \
	251	.next = &iio_event_##_name.list, \
	252	.prev = &iio_event_##_name.list, \
	253	}, \
	254	};
4c572605	255
847ec80b	256	/**
4c572605 RD	257	* IIO_EVENT_ATTR_SH - generic shared event attribute
	258	* @_name: event name
	259	* @_ev_list: event handler list
	260	* @_show: output method for the attribute
	261	* @_store: input method for the attribute
	262	* @_mask: mask used when detecting the event
847ec80b JC	263	*
	264	* An attribute with an associated IIO_EVENT_SH
	265	**/
	266	#define IIO_EVENT_ATTR_SH(_name, _ev_list, _show, _store, _mask) \
	267	static struct iio_event_attr \
	268	iio_event_attr_##_name \
	269	= { .dev_attr = __ATTR(_name, S_IRUGO \| S_IWUSR, \
	270	_show, _store), \
	271	.mask = _mask, \
	272	.listel = &_ev_list };
	273
	274	/**
4c572605 RD	275	* IIO_EVENT_ATTR - non-shared event attribute
	276	* @_name: event name
	277	* @_show: output method for the attribute
	278	* @_store: input method for the attribute
	279	* @_mask: mask used when detecting the event
	280	* @_handler: handler function to be called
847ec80b JC	281	**/
	282	#define IIO_EVENT_ATTR(_name, _show, _store, _mask, _handler) \
	283	static struct iio_event_handler_list \
	284	iio_event_##_name = { \
	285	.handler = _handler, \
	286	}; \
	287	static struct \
	288	iio_event_attr \
	289	iio_event_attr_##_name \
	290	= { .dev_attr = __ATTR(_name, S_IRUGO \| S_IWUSR, \
	291	_show, _store), \
	292	.mask = _mask, \
	293	.listel = &iio_event_##_name }; \
	294
	295	/**
4c572605 RD	296	* IIO_EVENT_ATTR_DATA_RDY - event driven by data ready signal
	297	* @_show: output method for the attribute
	298	* @_store: input method for the attribute
	299	* @_mask: mask used when detecting the event
	300	* @_handler: handler function to be called
847ec80b JC	301	*
847ec80b JC	302	* Not typically implemented in devices where full triggering support
4c572605	303	* has been implemented.
847ec80b JC	304	**/
	305	#define IIO_EVENT_ATTR_DATA_RDY(_show, _store, _mask, _handler) \
	306	IIO_EVENT_ATTR(data_rdy, _show, _store, _mask, _handler)
	307
	308	#define IIO_EVENT_CODE_DATA_RDY 100
	309	#define IIO_EVENT_CODE_RING_BASE 200
	310	#define IIO_EVENT_CODE_ACCEL_BASE 300
	311	#define IIO_EVENT_CODE_GYRO_BASE 400
	312	#define IIO_EVENT_CODE_ADC_BASE 500
	313	#define IIO_EVENT_CODE_MISC_BASE 600
	314
	315	#define IIO_EVENT_CODE_DEVICE_SPECIFIC 1000
	316
	317	/**
4c572605 RD	318	* IIO_EVENT_ATTR_RING_50_FULL - ring buffer event to indicate 50% full
	319	* @_show: output method for the attribute
	320	* @_store: input method for the attribute
	321	* @_mask: mask used when detecting the event
	322	* @_handler: handler function to be called
847ec80b JC	323	**/
	324	#define IIO_EVENT_ATTR_RING_50_FULL(_show, _store, _mask, _handler) \
	325	IIO_EVENT_ATTR(ring_50_full, _show, _store, _mask, _handler)
	326
	327	/**
4c572605 RD	328	* IIO_EVENT_ATTR_RING_50_FULL_SH - shared ring event to indicate 50% full
	329	* @_evlist: event handler list
	330	* @_show: output method for the attribute
	331	* @_store: input method for the attribute
	332	* @_mask: mask used when detecting the event
847ec80b JC	333	**/
	334	#define IIO_EVENT_ATTR_RING_50_FULL_SH(_evlist, _show, _store, _mask) \
	335	IIO_EVENT_ATTR_SH(ring_50_full, _evlist, _show, _store, _mask)
	336
	337	/**
4c572605 RD	338	* IIO_EVENT_ATTR_RING_75_FULL_SH - shared ring event to indicate 75% full
	339	* @_evlist: event handler list
	340	* @_show: output method for the attribute
	341	* @_store: input method for the attribute
	342	* @_mask: mask used when detecting the event
847ec80b JC	343	**/
	344	#define IIO_EVENT_ATTR_RING_75_FULL_SH(_evlist, _show, _store, _mask) \
	345	IIO_EVENT_ATTR_SH(ring_75_full, _evlist, _show, _store, _mask)
	346
	347	#define IIO_EVENT_CODE_RING_50_FULL IIO_EVENT_CODE_RING_BASE
	348	#define IIO_EVENT_CODE_RING_75_FULL (IIO_EVENT_CODE_RING_BASE + 1)
	349	#define IIO_EVENT_CODE_RING_100_FULL (IIO_EVENT_CODE_RING_BASE + 2)
	350
	351	#endif /* _INDUSTRIAL_IO_SYSFS_H_ */