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Revision d90c732122a1f6d0efe388a8a204f67f144b2eb3 authored by Josef Bacik on 17 May 2011, 13:50:54 UTC, committed by Josef Bacik on 23 May 2011, 17:03:17 UTC 
Btrfs: leave spinning on lookup and map the leaf
 
On lookup we only want to read the inode item, so leave the path spinning.  Also
we're just wholesale reading the leaf off, so map the leaf so we don't do a
bunch of kmap/kunmaps.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
1 parent 207dde8
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ir-kbd-i2c.h 
#ifndef _IR_I2C
#define _IR_I2C

#include <media/rc-core.h>

#define DEFAULT_POLLING_INTERVAL	100	/* ms */

struct IR_i2c;

struct IR_i2c {
	char		       *ir_codes;
	struct i2c_client      *c;
	struct rc_dev          *rc;

	/* Used to avoid fast repeating */
	unsigned char          old;

	u32                    polling_interval; /* in ms */

	struct delayed_work    work;
	char                   name[32];
	char                   phys[32];
	int                    (*get_key)(struct IR_i2c*, u32*, u32*);
};

enum ir_kbd_get_key_fn {
	IR_KBD_GET_KEY_CUSTOM = 0,
	IR_KBD_GET_KEY_PIXELVIEW,
	IR_KBD_GET_KEY_HAUP,
	IR_KBD_GET_KEY_KNC1,
	IR_KBD_GET_KEY_FUSIONHDTV,
	IR_KBD_GET_KEY_HAUP_XVR,
	IR_KBD_GET_KEY_AVERMEDIA_CARDBUS,
};

/* Can be passed when instantiating an ir_video i2c device */
struct IR_i2c_init_data {
	char			*ir_codes;
	const char		*name;
	u64			type; /* RC_TYPE_RC5, etc */
	u32			polling_interval; /* 0 means DEFAULT_POLLING_INTERVAL */

	/*
	 * Specify either a function pointer or a value indicating one of
	 * ir_kbd_i2c's internal get_key functions
	 */
	int                    (*get_key)(struct IR_i2c*, u32*, u32*);
	enum ir_kbd_get_key_fn internal_get_key_func;

	struct rc_dev		*rc_dev;
};
#endif
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