[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / rt2x00 / rt2x00usb.h

/*
	Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
	<http://rt2x00.serialmonkey.com>

	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; either version 2 of the License, or
	(at your option) any later version.

	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.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the
	Free Software Foundation, Inc.,
	59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

/*
	Module: rt2x00usb
	Abstract: Data structures for the rt2x00usb module.
 */

#ifndef RT2X00USB_H
#define RT2X00USB_H

#define to_usb_device_intf(d) \
({ \
	struct usb_interface *intf = to_usb_interface(d); \
	interface_to_usbdev(intf); \
})

/*
 * This variable should be used with the
 * usb_driver structure initialization.
 */
#define USB_DEVICE_DATA(__ops)	.driver_info = (kernel_ulong_t)(__ops)

/*
 * Register defines.
 * Some registers require multiple attempts before success,
 * in those cases REGISTER_BUSY_COUNT attempts should be
 * taken with a REGISTER_BUSY_DELAY interval.
 * For USB vendor requests we need to pass a timeout
 * time in ms, for this we use the REGISTER_TIMEOUT,
 * however when loading firmware a higher value is
 * required. In that case we use the REGISTER_TIMEOUT_FIRMWARE.
 */
#define REGISTER_BUSY_COUNT		5
#define REGISTER_BUSY_DELAY		100
#define REGISTER_TIMEOUT		500
#define REGISTER_TIMEOUT_FIRMWARE	1000

/**
 * REGISTER_TIMEOUT16 - Determine the timeout for 16bit register access
 * @__datalen: Data length
 */
#define REGISTER_TIMEOUT16(__datalen)	\
	( REGISTER_TIMEOUT * ((__datalen) / sizeof(u16)) )

/**
 * REGISTER_TIMEOUT32 - Determine the timeout for 32bit register access
 * @__datalen: Data length
 */
#define REGISTER_TIMEOUT32(__datalen)	\
	( REGISTER_TIMEOUT * ((__datalen) / sizeof(u32)) )

/*
 * Cache size
 */
#define CSR_CACHE_SIZE			8
#define CSR_CACHE_SIZE_FIRMWARE		64

/*
 * USB request types.
 */
#define USB_VENDOR_REQUEST	( USB_TYPE_VENDOR | USB_RECIP_DEVICE )
#define USB_VENDOR_REQUEST_IN	( USB_DIR_IN | USB_VENDOR_REQUEST )
#define USB_VENDOR_REQUEST_OUT	( USB_DIR_OUT | USB_VENDOR_REQUEST )

/**
 * enum rt2x00usb_vendor_request: USB vendor commands.
 */
enum rt2x00usb_vendor_request {
	USB_DEVICE_MODE = 1,
	USB_SINGLE_WRITE = 2,
	USB_SINGLE_READ = 3,
	USB_MULTI_WRITE = 6,
	USB_MULTI_READ = 7,
	USB_EEPROM_WRITE = 8,
	USB_EEPROM_READ = 9,
	USB_LED_CONTROL = 10, /* RT73USB */
	USB_RX_CONTROL = 12,
};

/**
 * enum rt2x00usb_mode_offset: Device modes offset.
 */
enum rt2x00usb_mode_offset {
	USB_MODE_RESET = 1,
	USB_MODE_UNPLUG = 2,
	USB_MODE_FUNCTION = 3,
	USB_MODE_TEST = 4,
	USB_MODE_SLEEP = 7,	/* RT73USB */
	USB_MODE_FIRMWARE = 8,	/* RT73USB */
	USB_MODE_WAKEUP = 9,	/* RT73USB */
};

/**
 * rt2x00usb_vendor_request - Send register command to device
 * @rt2x00dev: Pointer to &struct rt2x00_dev
 * @request: USB vendor command (See &enum rt2x00usb_vendor_request)
 * @requesttype: Request type &USB_VENDOR_REQUEST_*
 * @offset: Register offset to perform action on
 * @value: Value to write to device
 * @buffer: Buffer where information will be read/written to by device
 * @buffer_length: Size of &buffer
 * @timeout: Operation timeout
 *
 * This is the main function to communicate with the device,
 * the &buffer argument _must_ either be NULL or point to
 * a buffer allocated by kmalloc. Failure to do so can lead
 * to unexpected behavior depending on the architecture.
 */
int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev,
			     const u8 request, const u8 requesttype,
			     const u16 offset, const u16 value,
			     void *buffer, const u16 buffer_length,
			     const int timeout);

/**
 * rt2x00usb_vendor_request_buff - Send register command to device (buffered)
 * @rt2x00dev: Pointer to &struct rt2x00_dev
 * @request: USB vendor command (See &enum rt2x00usb_vendor_request)
 * @requesttype: Request type &USB_VENDOR_REQUEST_*
 * @offset: Register offset to perform action on
 * @buffer: Buffer where information will be read/written to by device
 * @buffer_length: Size of &buffer
 * @timeout: Operation timeout
 *
 * This function will use a previously with kmalloc allocated cache
 * to communicate with the device. The contents of the buffer pointer
 * will be copied to this cache when writing, or read from the cache
 * when reading.
 * Buffers send to &rt2x00usb_vendor_request _must_ be allocated with
 * kmalloc. Hence the reason for using a previously allocated cache
 * which has been allocated properly.
 */
int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev,
				  const u8 request, const u8 requesttype,
				  const u16 offset, void *buffer,
				  const u16 buffer_length, const int timeout);

/**
 * rt2x00usb_vendor_request_buff - Send register command to device (buffered)
 * @rt2x00dev: Pointer to &struct rt2x00_dev
 * @request: USB vendor command (See &enum rt2x00usb_vendor_request)
 * @requesttype: Request type &USB_VENDOR_REQUEST_*
 * @offset: Register offset to perform action on
 * @buffer: Buffer where information will be read/written to by device
 * @buffer_length: Size of &buffer
 * @timeout: Operation timeout
 *
 * A version of &rt2x00usb_vendor_request_buff which must be called
 * if the usb_cache_mutex is already held.
 */
int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev,
				   const u8 request, const u8 requesttype,
				   const u16 offset, void *buffer,
				   const u16 buffer_length, const int timeout);

/**
 * rt2x00usb_vendor_request_sw - Send single register command to device
 * @rt2x00dev: Pointer to &struct rt2x00_dev
 * @request: USB vendor command (See &enum rt2x00usb_vendor_request)
 * @offset: Register offset to perform action on
 * @value: Value to write to device
 * @timeout: Operation timeout
 *
 * Simple wrapper around rt2x00usb_vendor_request to write a single
 * command to the device. Since we don't use the buffer argument we
 * don't have to worry about kmalloc here.
 */
static inline int rt2x00usb_vendor_request_sw(struct rt2x00_dev *rt2x00dev,
					      const u8 request,
					      const u16 offset,
					      const u16 value,
					      const int timeout)
{
	return rt2x00usb_vendor_request(rt2x00dev, request,
					USB_VENDOR_REQUEST_OUT, offset,
					value, NULL, 0, timeout);
}

/**
 * rt2x00usb_eeprom_read - Read eeprom from device
 * @rt2x00dev: Pointer to &struct rt2x00_dev
 * @eeprom: Pointer to eeprom array to store the information in
 * @length: Number of bytes to read from the eeprom
 *
 * Simple wrapper around rt2x00usb_vendor_request to read the eeprom
 * from the device. Note that the eeprom argument _must_ be allocated using
 * kmalloc for correct handling inside the kernel USB layer.
 */
static inline int rt2x00usb_eeprom_read(struct rt2x00_dev *rt2x00dev,
					__le16 *eeprom, const u16 length)
{
	return rt2x00usb_vendor_request(rt2x00dev, USB_EEPROM_READ,
					USB_VENDOR_REQUEST_IN, 0, 0,
					eeprom, length,
					REGISTER_TIMEOUT16(length));
}

/*
 * Radio handlers
 */
void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev);

/**
 * rt2x00usb_write_tx_data - Initialize URB for TX operation
 * @entry: The entry where the frame is located
 *
 * This function will initialize the URB and skb descriptor
 * to prepare the entry for the actual TX operation.
 */
int rt2x00usb_write_tx_data(struct queue_entry *entry);

/**
 * struct queue_entry_priv_usb: Per entry USB specific information
 *
 * @urb: Urb structure used for device communication.
 */
struct queue_entry_priv_usb {
	struct urb *urb;
};

/**
 * struct queue_entry_priv_usb_bcn: Per TX entry USB specific information
 *
 * The first section should match &struct queue_entry_priv_usb exactly.
 * rt2500usb can use this structure to send a guardian byte when working
 * with beacons.
 *
 * @urb: Urb structure used for device communication.
 * @guardian_data: Set to 0, used for sending the guardian data.
 * @guardian_urb: Urb structure used to send the guardian data.
 */
struct queue_entry_priv_usb_bcn {
	struct urb *urb;

	unsigned int guardian_data;
	struct urb *guardian_urb;
};

/**
 * rt2x00usb_kick_tx_queue - Kick data queue
 * @rt2x00dev: Pointer to &struct rt2x00_dev
 * @qid: Data queue to kick
 *
 * This will walk through all entries of the queue and push all pending
 * frames to the hardware as a single burst.
 */
void rt2x00usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
			     const enum data_queue_qid qid);

/*
 * Device initialization handlers.
 */
void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev,
			    struct queue_entry *entry);
void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev,
			    struct queue_entry *entry);
int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev);
void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev);

/*
 * USB driver handlers.
 */
int rt2x00usb_probe(struct usb_interface *usb_intf,
		    const struct usb_device_id *id);
void rt2x00usb_disconnect(struct usb_interface *usb_intf);
#ifdef CONFIG_PM
int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state);
int rt2x00usb_resume(struct usb_interface *usb_intf);
#else
#define rt2x00usb_suspend	NULL
#define rt2x00usb_resume	NULL
#endif /* CONFIG_PM */

#endif /* RT2X00USB_H */
Commit	Line	Data
95ea3627	1	/*
811aa9ca	2	Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
95ea3627 ID	3	<http://rt2x00.serialmonkey.com>
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 2 of the License, or
	8	(at your option) any later version.
	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	You should have received a copy of the GNU General Public License
	16	along with this program; if not, write to the
	17	Free Software Foundation, Inc.,
	18	59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	19	*/
	20
	21	/*
	22	Module: rt2x00usb
	23	Abstract: Data structures for the rt2x00usb module.
	24	*/
	25
	26	#ifndef RT2X00USB_H
	27	#define RT2X00USB_H
	28
c1d35dfa ID	29	#define to_usb_device_intf(d) \
	30	({ \
	31	struct usb_interface *intf = to_usb_interface(d); \
	32	interface_to_usbdev(intf); \
	33	})
	34
95ea3627 ID	35	/*
	36	* This variable should be used with the
	37	* usb_driver structure initialization.
	38	*/
	39	#define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
	40
	41	/*
	42	* Register defines.
	43	* Some registers require multiple attempts before success,
	44	* in those cases REGISTER_BUSY_COUNT attempts should be
	45	* taken with a REGISTER_BUSY_DELAY interval.
	46	* For USB vendor requests we need to pass a timeout
	47	* time in ms, for this we use the REGISTER_TIMEOUT,
	48	* however when loading firmware a higher value is
	49	* required. In that case we use the REGISTER_TIMEOUT_FIRMWARE.
	50	*/
	51	#define REGISTER_BUSY_COUNT 5
	52	#define REGISTER_BUSY_DELAY 100
e9136550	53	#define REGISTER_TIMEOUT 500
95ea3627 ID	54	#define REGISTER_TIMEOUT_FIRMWARE 1000
95ea3627 ID	55
bd394a74 ID	56	/**
	57	* REGISTER_TIMEOUT16 - Determine the timeout for 16bit register access
	58	* @__datalen: Data length
	59	*/
	60	#define REGISTER_TIMEOUT16(__datalen) \
	61	( REGISTER_TIMEOUT * ((__datalen) / sizeof(u16)) )
	62
	63	/**
	64	* REGISTER_TIMEOUT32 - Determine the timeout for 32bit register access
	65	* @__datalen: Data length
	66	*/
	67	#define REGISTER_TIMEOUT32(__datalen) \
	68	( REGISTER_TIMEOUT * ((__datalen) / sizeof(u32)) )
	69
95ea3627 ID	70	/*
	71	* Cache size
	72	*/
	73	#define CSR_CACHE_SIZE 8
	74	#define CSR_CACHE_SIZE_FIRMWARE 64
	75
	76	/*
	77	* USB request types.
	78	*/
	79	#define USB_VENDOR_REQUEST ( USB_TYPE_VENDOR \| USB_RECIP_DEVICE )
	80	#define USB_VENDOR_REQUEST_IN ( USB_DIR_IN \| USB_VENDOR_REQUEST )
	81	#define USB_VENDOR_REQUEST_OUT ( USB_DIR_OUT \| USB_VENDOR_REQUEST )
	82
3b640f21 ID	83	/**
3b640f21 ID	84	* enum rt2x00usb_vendor_request: USB vendor commands.
95ea3627	85	*/
3b640f21 ID	86	enum rt2x00usb_vendor_request {
	87	USB_DEVICE_MODE = 1,
	88	USB_SINGLE_WRITE = 2,
	89	USB_SINGLE_READ = 3,
	90	USB_MULTI_WRITE = 6,
	91	USB_MULTI_READ = 7,
	92	USB_EEPROM_WRITE = 8,
	93	USB_EEPROM_READ = 9,
	94	USB_LED_CONTROL = 10, /* RT73USB */
	95	USB_RX_CONTROL = 12,
	96	};
	97
	98	/**
	99	* enum rt2x00usb_mode_offset: Device modes offset.
	100	*/
	101	enum rt2x00usb_mode_offset {
	102	USB_MODE_RESET = 1,
	103	USB_MODE_UNPLUG = 2,
	104	USB_MODE_FUNCTION = 3,
	105	USB_MODE_TEST = 4,
	106	USB_MODE_SLEEP = 7, /* RT73USB */
	107	USB_MODE_FIRMWARE = 8, /* RT73USB */
	108	USB_MODE_WAKEUP = 9, /* RT73USB */
	109	};
	110
	111	/**
	112	* rt2x00usb_vendor_request - Send register command to device
	113	* @rt2x00dev: Pointer to &struct rt2x00_dev
	114	* @request: USB vendor command (See &enum rt2x00usb_vendor_request)
	115	* @requesttype: Request type &USB_VENDOR_REQUEST_*
	116	* @offset: Register offset to perform action on
	117	* @value: Value to write to device
	118	* @buffer: Buffer where information will be read/written to by device
	119	* @buffer_length: Size of &buffer
	120	* @timeout: Operation timeout
	121	*
95ea3627	122	* This is the main function to communicate with the device,
3b640f21	123	* the &buffer argument _must_ either be NULL or point to
95ea3627 ID	124	* a buffer allocated by kmalloc. Failure to do so can lead
	125	* to unexpected behavior depending on the architecture.
	126	*/
0e14f6d3	127	int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev,
95ea3627 ID	128	const u8 request, const u8 requesttype,
	129	const u16 offset, const u16 value,
	130	void *buffer, const u16 buffer_length,
e9136550	131	const int timeout);
95ea3627	132
3b640f21 ID	133	/**
	134	* rt2x00usb_vendor_request_buff - Send register command to device (buffered)
	135	* @rt2x00dev: Pointer to &struct rt2x00_dev
	136	* @request: USB vendor command (See &enum rt2x00usb_vendor_request)
	137	* @requesttype: Request type &USB_VENDOR_REQUEST_*
	138	* @offset: Register offset to perform action on
	139	* @buffer: Buffer where information will be read/written to by device
	140	* @buffer_length: Size of &buffer
	141	* @timeout: Operation timeout
	142	*
95ea3627 ID	143	* This function will use a previously with kmalloc allocated cache
	144	* to communicate with the device. The contents of the buffer pointer
	145	* will be copied to this cache when writing, or read from the cache
	146	* when reading.
3b640f21	147	* Buffers send to &rt2x00usb_vendor_request _must_ be allocated with
95ea3627 ID	148	* kmalloc. Hence the reason for using a previously allocated cache
	149	* which has been allocated properly.
	150	*/
0e14f6d3	151	int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev,
95ea3627 ID	152	const u8 request, const u8 requesttype,
95ea3627 ID	153	const u16 offset, void *buffer,
e9136550	154	const u16 buffer_length, const int timeout);
95ea3627	155
3b640f21 ID	156	/**
	157	* rt2x00usb_vendor_request_buff - Send register command to device (buffered)
	158	* @rt2x00dev: Pointer to &struct rt2x00_dev
	159	* @request: USB vendor command (See &enum rt2x00usb_vendor_request)
	160	* @requesttype: Request type &USB_VENDOR_REQUEST_*
	161	* @offset: Register offset to perform action on
	162	* @buffer: Buffer where information will be read/written to by device
	163	* @buffer_length: Size of &buffer
	164	* @timeout: Operation timeout
	165	*
	166	* A version of &rt2x00usb_vendor_request_buff which must be called
	167	* if the usb_cache_mutex is already held.
	168	*/
3d82346c AB	169	int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev,
	170	const u8 request, const u8 requesttype,
	171	const u16 offset, void *buffer,
	172	const u16 buffer_length, const int timeout);
	173
3b640f21 ID	174	/**
	175	* rt2x00usb_vendor_request_sw - Send single register command to device
	176	* @rt2x00dev: Pointer to &struct rt2x00_dev
	177	* @request: USB vendor command (See &enum rt2x00usb_vendor_request)
	178	* @offset: Register offset to perform action on
	179	* @value: Value to write to device
	180	* @timeout: Operation timeout
	181	*
95ea3627 ID	182	* Simple wrapper around rt2x00usb_vendor_request to write a single
	183	* command to the device. Since we don't use the buffer argument we
	184	* don't have to worry about kmalloc here.
	185	*/
0e14f6d3	186	static inline int rt2x00usb_vendor_request_sw(struct rt2x00_dev *rt2x00dev,
95ea3627 ID	187	const u8 request,
	188	const u16 offset,
	189	const u16 value,
e9136550	190	const int timeout)
95ea3627 ID	191	{
	192	return rt2x00usb_vendor_request(rt2x00dev, request,
	193	USB_VENDOR_REQUEST_OUT, offset,
	194	value, NULL, 0, timeout);
	195	}
	196
3b640f21 ID	197	/**
	198	* rt2x00usb_eeprom_read - Read eeprom from device
	199	* @rt2x00dev: Pointer to &struct rt2x00_dev
	200	* @eeprom: Pointer to eeprom array to store the information in
	201	* @length: Number of bytes to read from the eeprom
	202	*
95ea3627 ID	203	* Simple wrapper around rt2x00usb_vendor_request to read the eeprom
	204	* from the device. Note that the eeprom argument _must_ be allocated using
	205	* kmalloc for correct handling inside the kernel USB layer.
	206	*/
0e14f6d3	207	static inline int rt2x00usb_eeprom_read(struct rt2x00_dev *rt2x00dev,
9a46d44e	208	__le16 *eeprom, const u16 length)
95ea3627	209	{
95ea3627	210	return rt2x00usb_vendor_request(rt2x00dev, USB_EEPROM_READ,
3b640f21	211	USB_VENDOR_REQUEST_IN, 0, 0,
9a46d44e ID	212	eeprom, length,
9a46d44e ID	213	REGISTER_TIMEOUT16(length));
95ea3627 ID	214	}
	215
	216	/*
	217	* Radio handlers
	218	*/
95ea3627 ID	219	void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev);
95ea3627 ID	220
6db3786a ID	221	/**
	222	* rt2x00usb_write_tx_data - Initialize URB for TX operation
	223	* @entry: The entry where the frame is located
	224	*
	225	* This function will initialize the URB and skb descriptor
	226	* to prepare the entry for the actual TX operation.
95ea3627	227	*/
6db3786a	228	int rt2x00usb_write_tx_data(struct queue_entry *entry);
95ea3627	229
181d6902	230	/**
b8be63ff	231	* struct queue_entry_priv_usb: Per entry USB specific information
181d6902 ID	232	*
181d6902 ID	233	* @urb: Urb structure used for device communication.
181d6902	234	*/
b8be63ff	235	struct queue_entry_priv_usb {
181d6902	236	struct urb *urb;
181d6902 ID	237	};
	238
	239	/**
b8be63ff	240	* struct queue_entry_priv_usb_bcn: Per TX entry USB specific information
181d6902	241	*
b8be63ff	242	* The first section should match &struct queue_entry_priv_usb exactly.
181d6902 ID	243	* rt2500usb can use this structure to send a guardian byte when working
	244	* with beacons.
	245	*
	246	* @urb: Urb structure used for device communication.
181d6902 ID	247	* @guardian_data: Set to 0, used for sending the guardian data.
	248	* @guardian_urb: Urb structure used to send the guardian data.
	249	*/
	250	struct queue_entry_priv_usb_bcn {
	251	struct urb *urb;
	252
181d6902 ID	253	unsigned int guardian_data;
	254	struct urb *guardian_urb;
	255	};
	256
f019d514 ID	257	/**
	258	* rt2x00usb_kick_tx_queue - Kick data queue
	259	* @rt2x00dev: Pointer to &struct rt2x00_dev
	260	* @qid: Data queue to kick
	261	*
	262	* This will walk through all entries of the queue and push all pending
	263	* frames to the hardware as a single burst.
	264	*/
	265	void rt2x00usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
	266	const enum data_queue_qid qid);
	267
95ea3627 ID	268	/*
	269	* Device initialization handlers.
	270	*/
837e7f24	271	void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev,
181d6902	272	struct queue_entry *entry);
837e7f24	273	void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev,
181d6902	274	struct queue_entry *entry);
95ea3627 ID	275	int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev);
	276	void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev);
	277
	278	/*
	279	* USB driver handlers.
	280	*/
	281	int rt2x00usb_probe(struct usb_interface *usb_intf,
	282	const struct usb_device_id *id);
	283	void rt2x00usb_disconnect(struct usb_interface *usb_intf);
	284	#ifdef CONFIG_PM
	285	int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state);
	286	int rt2x00usb_resume(struct usb_interface *usb_intf);
	287	#else
	288	#define rt2x00usb_suspend NULL
	289	#define rt2x00usb_resume NULL
	290	#endif /* CONFIG_PM */
	291
	292	#endif /* RT2X00USB_H */