[deliverable/linux.git] / include / media / rc-core.h

/*
 * Remote Controller core header
 *
 * Copyright (C) 2009-2010 by Mauro Carvalho Chehab
 *
 * This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation version 2 of the License.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 */

#ifndef _RC_CORE
#define _RC_CORE

#include <linux/spinlock.h>
#include <linux/kfifo.h>
#include <linux/time.h>
#include <linux/timer.h>
#include <media/rc-map.h>

extern int rc_core_debug;
#define IR_dprintk(level, fmt, ...)				\
do {								\
	if (rc_core_debug >= level)				\
		pr_debug("%s: " fmt, __func__, ##__VA_ARGS__);	\
} while (0)

enum rc_driver_type {
	RC_DRIVER_SCANCODE = 0,	/* Driver or hardware generates a scancode */
	RC_DRIVER_IR_RAW,	/* Needs a Infra-Red pulse/space decoder */
};

/**
 * struct rc_scancode_filter - Filter scan codes.
 * @data:	Scancode data to match.
 * @mask:	Mask of bits of scancode to compare.
 */
struct rc_scancode_filter {
	u32 data;
	u32 mask;
};

/**
 * enum rc_filter_type - Filter type constants.
 * @RC_FILTER_NORMAL:	Filter for normal operation.
 * @RC_FILTER_WAKEUP:	Filter for waking from suspend.
 * @RC_FILTER_MAX:	Number of filter types.
 */
enum rc_filter_type {
	RC_FILTER_NORMAL = 0,
	RC_FILTER_WAKEUP,

	RC_FILTER_MAX
};

/**
 * struct rc_dev - represents a remote control device
 * @dev: driver model's view of this device
 * @input_name: name of the input child device
 * @input_phys: physical path to the input child device
 * @input_id: id of the input child device (struct input_id)
 * @driver_name: name of the hardware driver which registered this device
 * @map_name: name of the default keymap
 * @rc_map: current scan/key table
 * @lock: used to ensure we've filled in all protocol details before
 *	anyone can call show_protocols or store_protocols
 * @devno: unique remote control device number
 * @raw: additional data for raw pulse/space devices
 * @input_dev: the input child device used to communicate events to userspace
 * @driver_type: specifies if protocol decoding is done in hardware or software
 * @idle: used to keep track of RX state
 * @allowed_protocols: bitmask with the supported RC_BIT_* protocols for each
 *	filter type
 * @enabled_protocols: bitmask with the enabled RC_BIT_* protocols for each
 *	filter type
 * @scanmask: some hardware decoders are not capable of providing the full
 *	scancode to the application. As this is a hardware limit, we can't do
 *	anything with it. Yet, as the same keycode table can be used with other
 *	devices, a mask is provided to allow its usage. Drivers should generally
 *	leave this field in blank
 * @priv: driver-specific data
 * @keylock: protects the remaining members of the struct
 * @keypressed: whether a key is currently pressed
 * @keyup_jiffies: time (in jiffies) when the current keypress should be released
 * @timer_keyup: timer for releasing a keypress
 * @last_keycode: keycode of last keypress
 * @last_scancode: scancode of last keypress
 * @last_toggle: toggle value of last command
 * @timeout: optional time after which device stops sending data
 * @min_timeout: minimum timeout supported by device
 * @max_timeout: maximum timeout supported by device
 * @rx_resolution : resolution (in ns) of input sampler
 * @tx_resolution: resolution (in ns) of output sampler
 * @scancode_filters: scancode filters (indexed by enum rc_filter_type)
 * @change_protocol: allow changing the protocol used on hardware decoders
 * @open: callback to allow drivers to enable polling/irq when IR input device
 *	is opened.
 * @close: callback to allow drivers to disable polling/irq when IR input device
 *	is opened.
 * @s_tx_mask: set transmitter mask (for devices with multiple tx outputs)
 * @s_tx_carrier: set transmit carrier frequency
 * @s_tx_duty_cycle: set transmit duty cycle (0% - 100%)
 * @s_rx_carrier: inform driver about carrier it is expected to handle
 * @tx_ir: transmit IR
 * @s_idle: enable/disable hardware idle mode, upon which,
 *	device doesn't interrupt host until it sees IR pulses
 * @s_learning_mode: enable wide band receiver used for learning
 * @s_carrier_report: enable carrier reports
 * @s_filter: set the scancode filter of a given type
 */
struct rc_dev {
	struct device			dev;
	const char			*input_name;
	const char			*input_phys;
	struct input_id			input_id;
	char				*driver_name;
	const char			*map_name;
	struct rc_map			rc_map;
	struct mutex			lock;
	unsigned long			devno;
	struct ir_raw_event_ctrl	*raw;
	struct input_dev		*input_dev;
	enum rc_driver_type		driver_type;
	bool				idle;
	u64				allowed_protocols[RC_FILTER_MAX];
	u64				enabled_protocols[RC_FILTER_MAX];
	u32				users;
	u32				scanmask;
	void				*priv;
	spinlock_t			keylock;
	bool				keypressed;
	unsigned long			keyup_jiffies;
	struct timer_list		timer_keyup;
	u32				last_keycode;
	u32				last_scancode;
	u8				last_toggle;
	u32				timeout;
	u32				min_timeout;
	u32				max_timeout;
	u32				rx_resolution;
	u32				tx_resolution;
	struct rc_scancode_filter	scancode_filters[RC_FILTER_MAX];
	int				(*change_protocol)(struct rc_dev *dev, u64 *rc_type);
	int				(*open)(struct rc_dev *dev);
	void				(*close)(struct rc_dev *dev);
	int				(*s_tx_mask)(struct rc_dev *dev, u32 mask);
	int				(*s_tx_carrier)(struct rc_dev *dev, u32 carrier);
	int				(*s_tx_duty_cycle)(struct rc_dev *dev, u32 duty_cycle);
	int				(*s_rx_carrier_range)(struct rc_dev *dev, u32 min, u32 max);
	int				(*tx_ir)(struct rc_dev *dev, unsigned *txbuf, unsigned n);
	void				(*s_idle)(struct rc_dev *dev, bool enable);
	int				(*s_learning_mode)(struct rc_dev *dev, int enable);
	int				(*s_carrier_report) (struct rc_dev *dev, int enable);
	int				(*s_filter)(struct rc_dev *dev,
						    enum rc_filter_type type,
						    struct rc_scancode_filter *filter);
};

#define to_rc_dev(d) container_of(d, struct rc_dev, dev)

static inline bool rc_protocols_allowed(struct rc_dev *rdev, u64 protos)
{
	return rdev->allowed_protocols[RC_FILTER_NORMAL] & protos;
}

/* should be called prior to registration or with mutex held */
static inline void rc_set_allowed_protocols(struct rc_dev *rdev, u64 protos)
{
	rdev->allowed_protocols[RC_FILTER_NORMAL] = protos;
}

static inline bool rc_protocols_enabled(struct rc_dev *rdev, u64 protos)
{
	return rdev->enabled_protocols[RC_FILTER_NORMAL] & protos;
}

/* should be called prior to registration or with mutex held */
static inline void rc_set_enabled_protocols(struct rc_dev *rdev, u64 protos)
{
	rdev->enabled_protocols[RC_FILTER_NORMAL] = protos;
}

/* should be called prior to registration or with mutex held */
static inline void rc_set_allowed_wakeup_protocols(struct rc_dev *rdev,
						   u64 protos)
{
	rdev->allowed_protocols[RC_FILTER_WAKEUP] = protos;
}

/* should be called prior to registration or with mutex held */
static inline void rc_set_enabled_wakeup_protocols(struct rc_dev *rdev,
						   u64 protos)
{
	rdev->enabled_protocols[RC_FILTER_WAKEUP] = protos;
}

/*
 * From rc-main.c
 * Those functions can be used on any type of Remote Controller. They
 * basically creates an input_dev and properly reports the device as a
 * Remote Controller, at sys/class/rc.
 */

struct rc_dev *rc_allocate_device(void);
void rc_free_device(struct rc_dev *dev);
int rc_register_device(struct rc_dev *dev);
void rc_unregister_device(struct rc_dev *dev);

int rc_open(struct rc_dev *rdev);
void rc_close(struct rc_dev *rdev);

void rc_repeat(struct rc_dev *dev);
void rc_keydown(struct rc_dev *dev, int scancode, u8 toggle);
void rc_keydown_notimeout(struct rc_dev *dev, int scancode, u8 toggle);
void rc_keyup(struct rc_dev *dev);
u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode);

/*
 * From rc-raw.c
 * The Raw interface is specific to InfraRed. It may be a good idea to
 * split it later into a separate header.
 */

enum raw_event_type {
	IR_SPACE        = (1 << 0),
	IR_PULSE        = (1 << 1),
	IR_START_EVENT  = (1 << 2),
	IR_STOP_EVENT   = (1 << 3),
};

struct ir_raw_event {
	union {
		u32             duration;

		struct {
			u32     carrier;
			u8      duty_cycle;
		};
	};

	unsigned                pulse:1;
	unsigned                reset:1;
	unsigned                timeout:1;
	unsigned                carrier_report:1;
};

#define DEFINE_IR_RAW_EVENT(event) \
	struct ir_raw_event event = { \
		{ .duration = 0 } , \
		.pulse = 0, \
		.reset = 0, \
		.timeout = 0, \
		.carrier_report = 0 }

static inline void init_ir_raw_event(struct ir_raw_event *ev)
{
	memset(ev, 0, sizeof(*ev));
}

#define IR_MAX_DURATION         0xFFFFFFFF      /* a bit more than 4 seconds */
#define US_TO_NS(usec)		((usec) * 1000)
#define MS_TO_US(msec)		((msec) * 1000)
#define MS_TO_NS(msec)		((msec) * 1000 * 1000)

void ir_raw_event_handle(struct rc_dev *dev);
int ir_raw_event_store(struct rc_dev *dev, struct ir_raw_event *ev);
int ir_raw_event_store_edge(struct rc_dev *dev, enum raw_event_type type);
int ir_raw_event_store_with_filter(struct rc_dev *dev,
				struct ir_raw_event *ev);
void ir_raw_event_set_idle(struct rc_dev *dev, bool idle);

static inline void ir_raw_event_reset(struct rc_dev *dev)
{
	DEFINE_IR_RAW_EVENT(ev);
	ev.reset = true;

	ir_raw_event_store(dev, &ev);
	ir_raw_event_handle(dev);
}

/* extract mask bits out of data and pack them into the result */
static inline u32 ir_extract_bits(u32 data, u32 mask)
{
	u32 vbit = 1, value = 0;

	do {
		if (mask & 1) {
			if (data & 1)
				value |= vbit;
			vbit <<= 1;
		}
		data >>= 1;
	} while (mask >>= 1);

	return value;
}

#endif /* _RC_CORE */
Commit	Line	Data
446e4a64 MCC	1	/*
	2	* Remote Controller core header
	3	*
37e59f87	4	* Copyright (C) 2009-2010 by Mauro Carvalho Chehab
995187be	5	*
446e4a64 MCC	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation version 2 of the License.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*/
	15
ca86674b MCC	16	#ifndef _RC_CORE
ca86674b MCC	17	#define _RC_CORE
446e4a64	18
446e4a64	19	#include <linux/spinlock.h>
a3572c34 MCC	20	#include <linux/kfifo.h>
a3572c34 MCC	21	#include <linux/time.h>
9f154782	22	#include <linux/timer.h>
02858eed	23	#include <media/rc-map.h>
446e4a64	24
6bda9644	25	extern int rc_core_debug;
86b0dbef JP	26	#define IR_dprintk(level, fmt, ...) \
	27	do { \
	28	if (rc_core_debug >= level) \
	29	pr_debug("%s: " fmt, __func__, ##__VA_ARGS__); \
	30	} while (0)
446e4a64	31
626cf697 MCC	32	enum rc_driver_type {
	33	RC_DRIVER_SCANCODE = 0, /* Driver or hardware generates a scancode */
	34	RC_DRIVER_IR_RAW, /* Needs a Infra-Red pulse/space decoder */
	35	};
	36
00942d1a JH	37	/**
	38	* struct rc_scancode_filter - Filter scan codes.
	39	* @data: Scancode data to match.
	40	* @mask: Mask of bits of scancode to compare.
	41	*/
	42	struct rc_scancode_filter {
	43	u32 data;
	44	u32 mask;
	45	};
	46
	47	/**
	48	* enum rc_filter_type - Filter type constants.
	49	* @RC_FILTER_NORMAL: Filter for normal operation.
	50	* @RC_FILTER_WAKEUP: Filter for waking from suspend.
	51	* @RC_FILTER_MAX: Number of filter types.
	52	*/
	53	enum rc_filter_type {
	54	RC_FILTER_NORMAL = 0,
	55	RC_FILTER_WAKEUP,
	56
	57	RC_FILTER_MAX
	58	};
	59
9dfe4e83	60	/**
d8b4b582 DH	61	* struct rc_dev - represents a remote control device
	62	* @dev: driver model's view of this device
	63	* @input_name: name of the input child device
	64	* @input_phys: physical path to the input child device
	65	* @input_id: id of the input child device (struct input_id)
	66	* @driver_name: name of the hardware driver which registered this device
	67	* @map_name: name of the default keymap
b088ba65	68	* @rc_map: current scan/key table
08aeb7c9 JW	69	* @lock: used to ensure we've filled in all protocol details before
08aeb7c9 JW	70	* anyone can call show_protocols or store_protocols
d8b4b582 DH	71	* @devno: unique remote control device number
	72	* @raw: additional data for raw pulse/space devices
	73	* @input_dev: the input child device used to communicate events to userspace
08aeb7c9	74	* @driver_type: specifies if protocol decoding is done in hardware or software
d8b4b582	75	* @idle: used to keep track of RX state
acff5f24 JH	76	* @allowed_protocols: bitmask with the supported RC_BIT_* protocols for each
	77	* filter type
	78	* @enabled_protocols: bitmask with the enabled RC_BIT_* protocols for each
	79	* filter type
9dfe4e83 MCC	80	* @scanmask: some hardware decoders are not capable of providing the full
	81	* scancode to the application. As this is a hardware limit, we can't do
	82	* anything with it. Yet, as the same keycode table can be used with other
	83	* devices, a mask is provided to allow its usage. Drivers should generally
	84	* leave this field in blank
d8b4b582 DH	85	* @priv: driver-specific data
	86	* @keylock: protects the remaining members of the struct
	87	* @keypressed: whether a key is currently pressed
	88	* @keyup_jiffies: time (in jiffies) when the current keypress should be released
	89	* @timer_keyup: timer for releasing a keypress
	90	* @last_keycode: keycode of last keypress
	91	* @last_scancode: scancode of last keypress
	92	* @last_toggle: toggle value of last command
4a702ebf ML	93	* @timeout: optional time after which device stops sending data
	94	* @min_timeout: minimum timeout supported by device
	95	* @max_timeout: maximum timeout supported by device
e589333f ML	96	* @rx_resolution : resolution (in ns) of input sampler
e589333f ML	97	* @tx_resolution: resolution (in ns) of output sampler
00942d1a	98	* @scancode_filters: scancode filters (indexed by enum rc_filter_type)
9dfe4e83 MCC	99	* @change_protocol: allow changing the protocol used on hardware decoders
	100	* @open: callback to allow drivers to enable polling/irq when IR input device
	101	* is opened.
	102	* @close: callback to allow drivers to disable polling/irq when IR input device
	103	* is opened.
9b7c54d9 JW	104	* @s_tx_mask: set transmitter mask (for devices with multiple tx outputs)
9b7c54d9 JW	105	* @s_tx_carrier: set transmit carrier frequency
e589333f ML	106	* @s_tx_duty_cycle: set transmit duty cycle (0% - 100%)
e589333f ML	107	* @s_rx_carrier: inform driver about carrier it is expected to handle
9b7c54d9	108	* @tx_ir: transmit IR
d8b4b582 DH	109	* @s_idle: enable/disable hardware idle mode, upon which,
d8b4b582 DH	110	* device doesn't interrupt host until it sees IR pulses
e589333f	111	* @s_learning_mode: enable wide band receiver used for learning
4651918a	112	* @s_carrier_report: enable carrier reports
00942d1a	113	* @s_filter: set the scancode filter of a given type
9dfe4e83	114	*/
d8b4b582 DH	115	struct rc_dev {
	116	struct device dev;
	117	const char *input_name;
	118	const char *input_phys;
	119	struct input_id input_id;
	120	char *driver_name;
	121	const char *map_name;
08aeb7c9 JW	122	struct rc_map rc_map;
08aeb7c9 JW	123	struct mutex lock;
d8b4b582 DH	124	unsigned long devno;
	125	struct ir_raw_event_ctrl *raw;
	126	struct input_dev *input_dev;
	127	enum rc_driver_type driver_type;
4a702ebf	128	bool idle;
acff5f24 JH	129	u64 allowed_protocols[RC_FILTER_MAX];
acff5f24 JH	130	u64 enabled_protocols[RC_FILTER_MAX];
8b2ff320	131	u32 users;
d8b4b582 DH	132	u32 scanmask;
	133	void *priv;
	134	spinlock_t keylock;
	135	bool keypressed;
	136	unsigned long keyup_jiffies;
	137	struct timer_list timer_keyup;
	138	u32 last_keycode;
	139	u32 last_scancode;
	140	u8 last_toggle;
	141	u32 timeout;
	142	u32 min_timeout;
	143	u32 max_timeout;
	144	u32 rx_resolution;
	145	u32 tx_resolution;
00942d1a	146	struct rc_scancode_filter scancode_filters[RC_FILTER_MAX];
c003ab1b	147	int (change_protocol)(struct rc_dev dev, u64 *rc_type);
d8b4b582 DH	148	int (open)(struct rc_dev dev);
	149	void (close)(struct rc_dev dev);
	150	int (s_tx_mask)(struct rc_dev dev, u32 mask);
	151	int (s_tx_carrier)(struct rc_dev dev, u32 carrier);
	152	int (s_tx_duty_cycle)(struct rc_dev dev, u32 duty_cycle);
	153	int (s_rx_carrier_range)(struct rc_dev dev, u32 min, u32 max);
5588dc2b	154	int (tx_ir)(struct rc_dev dev, unsigned *txbuf, unsigned n);
d8b4b582 DH	155	void (s_idle)(struct rc_dev dev, bool enable);
	156	int (s_learning_mode)(struct rc_dev dev, int enable);
	157	int (s_carrier_report) (struct rc_dev dev, int enable);
00942d1a JH	158	int (s_filter)(struct rc_dev dev,
	159	enum rc_filter_type type,
	160	struct rc_scancode_filter *filter);
75543cce	161	};
a3572c34	162
ca86674b MCC	163	#define to_rc_dev(d) container_of(d, struct rc_dev, dev)
ca86674b MCC	164
1a1934fa JH	165	static inline bool rc_protocols_allowed(struct rc_dev *rdev, u64 protos)
1a1934fa JH	166	{
acff5f24	167	return rdev->allowed_protocols[RC_FILTER_NORMAL] & protos;
1a1934fa JH	168	}
	169
	170	/* should be called prior to registration or with mutex held */
	171	static inline void rc_set_allowed_protocols(struct rc_dev *rdev, u64 protos)
	172	{
acff5f24	173	rdev->allowed_protocols[RC_FILTER_NORMAL] = protos;
1a1934fa JH	174	}
	175
	176	static inline bool rc_protocols_enabled(struct rc_dev *rdev, u64 protos)
	177	{
acff5f24	178	return rdev->enabled_protocols[RC_FILTER_NORMAL] & protos;
1a1934fa JH	179	}
	180
	181	/* should be called prior to registration or with mutex held */
	182	static inline void rc_set_enabled_protocols(struct rc_dev *rdev, u64 protos)
	183	{
acff5f24 JH	184	rdev->enabled_protocols[RC_FILTER_NORMAL] = protos;
	185	}
	186
	187	/* should be called prior to registration or with mutex held */
	188	static inline void rc_set_allowed_wakeup_protocols(struct rc_dev *rdev,
	189	u64 protos)
	190	{
	191	rdev->allowed_protocols[RC_FILTER_WAKEUP] = protos;
	192	}
	193
	194	/* should be called prior to registration or with mutex held */
	195	static inline void rc_set_enabled_wakeup_protocols(struct rc_dev *rdev,
	196	u64 protos)
	197	{
	198	rdev->enabled_protocols[RC_FILTER_WAKEUP] = protos;
1a1934fa JH	199	}
1a1934fa JH	200
ca86674b MCC	201	/*
	202	* From rc-main.c
	203	* Those functions can be used on any type of Remote Controller. They
	204	* basically creates an input_dev and properly reports the device as a
	205	* Remote Controller, at sys/class/rc.
	206	*/
	207
	208	struct rc_dev *rc_allocate_device(void);
	209	void rc_free_device(struct rc_dev *dev);
	210	int rc_register_device(struct rc_dev *dev);
	211	void rc_unregister_device(struct rc_dev *dev);
	212
8b2ff320 SK	213	int rc_open(struct rc_dev *rdev);
	214	void rc_close(struct rc_dev *rdev);
	215
ca86674b MCC	216	void rc_repeat(struct rc_dev *dev);
	217	void rc_keydown(struct rc_dev *dev, int scancode, u8 toggle);
	218	void rc_keydown_notimeout(struct rc_dev *dev, int scancode, u8 toggle);
	219	void rc_keyup(struct rc_dev *dev);
	220	u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode);
	221
	222	/*
	223	* From rc-raw.c
	224	* The Raw interface is specific to InfraRed. It may be a good idea to
	225	* split it later into a separate header.
	226	*/
	227
3f113e36 MCC	228	enum raw_event_type {
	229	IR_SPACE = (1 << 0),
	230	IR_PULSE = (1 << 1),
	231	IR_START_EVENT = (1 << 2),
	232	IR_STOP_EVENT = (1 << 3),
995187be MCC	233	};
995187be MCC	234
e40b1127	235	struct ir_raw_event {
4651918a ML	236	union {
	237	u32 duration;
	238
	239	struct {
	240	u32 carrier;
	241	u8 duty_cycle;
	242	};
	243	};
	244
	245	unsigned pulse:1;
	246	unsigned reset:1;
	247	unsigned timeout:1;
	248	unsigned carrier_report:1;
e40b1127 DH	249	};
e40b1127 DH	250
4651918a ML	251	#define DEFINE_IR_RAW_EVENT(event) \
	252	struct ir_raw_event event = { \
	253	{ .duration = 0 } , \
	254	.pulse = 0, \
	255	.reset = 0, \
	256	.timeout = 0, \
	257	.carrier_report = 0 }
	258
	259	static inline void init_ir_raw_event(struct ir_raw_event *ev)
	260	{
	261	memset(ev, 0, sizeof(*ev));
	262	}
	263
	264	#define IR_MAX_DURATION 0xFFFFFFFF /* a bit more than 4 seconds */
5aad7242 JW	265	#define US_TO_NS(usec) ((usec) * 1000)
	266	#define MS_TO_US(msec) ((msec) * 1000)
	267	#define MS_TO_NS(msec) ((msec) * 1000 * 1000)
e40b1127	268
d8b4b582 DH	269	void ir_raw_event_handle(struct rc_dev *dev);
	270	int ir_raw_event_store(struct rc_dev dev, struct ir_raw_event ev);
	271	int ir_raw_event_store_edge(struct rc_dev *dev, enum raw_event_type type);
	272	int ir_raw_event_store_with_filter(struct rc_dev *dev,
4a702ebf	273	struct ir_raw_event *ev);
d8b4b582	274	void ir_raw_event_set_idle(struct rc_dev *dev, bool idle);
4a702ebf	275
d8b4b582	276	static inline void ir_raw_event_reset(struct rc_dev *dev)
e40b1127	277	{
4651918a ML	278	DEFINE_IR_RAW_EVENT(ev);
	279	ev.reset = true;
	280
d8b4b582 DH	281	ir_raw_event_store(dev, &ev);
d8b4b582 DH	282	ir_raw_event_handle(dev);
e40b1127	283	}
724e2495	284
3ffea498 DH	285	/* extract mask bits out of data and pack them into the result */
	286	static inline u32 ir_extract_bits(u32 data, u32 mask)
	287	{
	288	u32 vbit = 1, value = 0;
	289
	290	do {
829ba9fe DH	291	if (mask & 1) {
	292	if (data & 1)
	293	value \|= vbit;
	294	vbit <<= 1;
	295	}
	296	data >>= 1;
3ffea498 DH	297	} while (mask >>= 1);
	298
	299	return value;
	300	}
	301
ca86674b	302	#endif /* _RC_CORE */