[linux-2.6-block.git] / include / linux / mmc / host.h

/*
 *  linux/include/linux/mmc/host.h
 *
 * 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.
 *
 *  Host driver specific definitions.
 */
#ifndef LINUX_MMC_HOST_H
#define LINUX_MMC_HOST_H

#include <linux/leds.h>
#include <linux/sched.h>

#include <linux/mmc/core.h>
#include <linux/mmc/pm.h>

struct mmc_ios {
	unsigned int	clock;			/* clock rate */
	unsigned short	vdd;

/* vdd stores the bit number of the selected voltage range from below. */

	unsigned char	bus_mode;		/* command output mode */

#define MMC_BUSMODE_OPENDRAIN	1
#define MMC_BUSMODE_PUSHPULL	2

	unsigned char	chip_select;		/* SPI chip select */

#define MMC_CS_DONTCARE		0
#define MMC_CS_HIGH		1
#define MMC_CS_LOW		2

	unsigned char	power_mode;		/* power supply mode */

#define MMC_POWER_OFF		0
#define MMC_POWER_UP		1
#define MMC_POWER_ON		2

	unsigned char	bus_width;		/* data bus width */

#define MMC_BUS_WIDTH_1		0
#define MMC_BUS_WIDTH_4		2
#define MMC_BUS_WIDTH_8		3

	unsigned char	timing;			/* timing specification used */

#define MMC_TIMING_LEGACY	0
#define MMC_TIMING_MMC_HS	1
#define MMC_TIMING_SD_HS	2

	unsigned char	ddr;			/* dual data rate used */

#define MMC_SDR_MODE		0
#define MMC_1_2V_DDR_MODE	1
#define MMC_1_8V_DDR_MODE	2
};

struct mmc_host_ops {
	/*
	 * Hosts that support power saving can use the 'enable' and 'disable'
	 * methods to exit and enter power saving states. 'enable' is called
	 * when the host is claimed and 'disable' is called (or scheduled with
	 * a delay) when the host is released. The 'disable' is scheduled if
	 * the disable delay set by 'mmc_set_disable_delay()' is non-zero,
	 * otherwise 'disable' is called immediately. 'disable' may be
	 * scheduled repeatedly, to permit ever greater power saving at the
	 * expense of ever greater latency to re-enable. Rescheduling is
	 * determined by the return value of the 'disable' method. A positive
	 * value gives the delay in milliseconds.
	 *
	 * In the case where a host function (like set_ios) may be called
	 * with or without the host claimed, enabling and disabling can be
	 * done directly and will nest correctly. Call 'mmc_host_enable()' and
	 * 'mmc_host_lazy_disable()' for this purpose, but note that these
	 * functions must be paired.
	 *
	 * Alternatively, 'mmc_host_enable()' may be paired with
	 * 'mmc_host_disable()' which calls 'disable' immediately.  In this
	 * case the 'disable' method will be called with 'lazy' set to 0.
	 * This is mainly useful for error paths.
	 *
	 * Because lazy disable may be called from a work queue, the 'disable'
	 * method must claim the host when 'lazy' != 0, which will work
	 * correctly because recursion is detected and handled.
	 */
	int (*enable)(struct mmc_host *host);
	int (*disable)(struct mmc_host *host, int lazy);
	void	(*request)(struct mmc_host *host, struct mmc_request *req);
	/*
	 * Avoid calling these three functions too often or in a "fast path",
	 * since underlaying controller might implement them in an expensive
	 * and/or slow way.
	 *
	 * Also note that these functions might sleep, so don't call them
	 * in the atomic contexts!
	 *
	 * Return values for the get_ro callback should be:
	 *   0 for a read/write card
	 *   1 for a read-only card
	 *   -ENOSYS when not supported (equal to NULL callback)
	 *   or a negative errno value when something bad happened
	 *
	 * Return values for the get_cd callback should be:
	 *   0 for a absent card
	 *   1 for a present card
	 *   -ENOSYS when not supported (equal to NULL callback)
	 *   or a negative errno value when something bad happened
	 */
	void	(*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
	int	(*get_ro)(struct mmc_host *host);
	int	(*get_cd)(struct mmc_host *host);

	void	(*enable_sdio_irq)(struct mmc_host *host, int enable);

	/* optional callback for HC quirks */
	void	(*init_card)(struct mmc_host *host, struct mmc_card *card);
};

struct mmc_card;
struct device;

struct mmc_host {
	struct device		*parent;
	struct device		class_dev;
	int			index;
	const struct mmc_host_ops *ops;
	unsigned int		f_min;
	unsigned int		f_max;
	unsigned int		f_init;
	u32			ocr_avail;
	u32			ocr_avail_sdio;	/* SDIO-specific OCR */
	u32			ocr_avail_sd;	/* SD-specific OCR */
	u32			ocr_avail_mmc;	/* MMC-specific OCR */
	struct notifier_block	pm_notify;

#define MMC_VDD_165_195		0x00000080	/* VDD voltage 1.65 - 1.95 */
#define MMC_VDD_20_21		0x00000100	/* VDD voltage 2.0 ~ 2.1 */
#define MMC_VDD_21_22		0x00000200	/* VDD voltage 2.1 ~ 2.2 */
#define MMC_VDD_22_23		0x00000400	/* VDD voltage 2.2 ~ 2.3 */
#define MMC_VDD_23_24		0x00000800	/* VDD voltage 2.3 ~ 2.4 */
#define MMC_VDD_24_25		0x00001000	/* VDD voltage 2.4 ~ 2.5 */
#define MMC_VDD_25_26		0x00002000	/* VDD voltage 2.5 ~ 2.6 */
#define MMC_VDD_26_27		0x00004000	/* VDD voltage 2.6 ~ 2.7 */
#define MMC_VDD_27_28		0x00008000	/* VDD voltage 2.7 ~ 2.8 */
#define MMC_VDD_28_29		0x00010000	/* VDD voltage 2.8 ~ 2.9 */
#define MMC_VDD_29_30		0x00020000	/* VDD voltage 2.9 ~ 3.0 */
#define MMC_VDD_30_31		0x00040000	/* VDD voltage 3.0 ~ 3.1 */
#define MMC_VDD_31_32		0x00080000	/* VDD voltage 3.1 ~ 3.2 */
#define MMC_VDD_32_33		0x00100000	/* VDD voltage 3.2 ~ 3.3 */
#define MMC_VDD_33_34		0x00200000	/* VDD voltage 3.3 ~ 3.4 */
#define MMC_VDD_34_35		0x00400000	/* VDD voltage 3.4 ~ 3.5 */
#define MMC_VDD_35_36		0x00800000	/* VDD voltage 3.5 ~ 3.6 */

	unsigned long		caps;		/* Host capabilities */

#define MMC_CAP_4_BIT_DATA	(1 << 0)	/* Can the host do 4 bit transfers */
#define MMC_CAP_MMC_HIGHSPEED	(1 << 1)	/* Can do MMC high-speed timing */
#define MMC_CAP_SD_HIGHSPEED	(1 << 2)	/* Can do SD high-speed timing */
#define MMC_CAP_SDIO_IRQ	(1 << 3)	/* Can signal pending SDIO IRQs */
#define MMC_CAP_SPI		(1 << 4)	/* Talks only SPI protocols */
#define MMC_CAP_NEEDS_POLL	(1 << 5)	/* Needs polling for card-detection */
#define MMC_CAP_8_BIT_DATA	(1 << 6)	/* Can the host do 8 bit transfers */
#define MMC_CAP_DISABLE		(1 << 7)	/* Can the host be disabled */
#define MMC_CAP_NONREMOVABLE	(1 << 8)	/* Nonremovable e.g. eMMC */
#define MMC_CAP_WAIT_WHILE_BUSY	(1 << 9)	/* Waits while card is busy */
#define MMC_CAP_ERASE		(1 << 10)	/* Allow erase/trim commands */
#define MMC_CAP_1_8V_DDR	(1 << 11)	/* can support */
						/* DDR mode at 1.8V */
#define MMC_CAP_1_2V_DDR	(1 << 12)	/* can support */
						/* DDR mode at 1.2V */
#define MMC_CAP_POWER_OFF_CARD	(1 << 13)	/* Can power off after boot */
#define MMC_CAP_BUS_WIDTH_TEST	(1 << 14)	/* CMD14/CMD19 bus width ok */

	mmc_pm_flag_t		pm_caps;	/* supported pm features */

#ifdef CONFIG_MMC_CLKGATE
	int			clk_requests;	/* internal reference counter */
	unsigned int		clk_delay;	/* number of MCI clk hold cycles */
	bool			clk_gated;	/* clock gated */
	struct work_struct	clk_gate_work; /* delayed clock gate */
	unsigned int		clk_old;	/* old clock value cache */
	spinlock_t		clk_lock;	/* lock for clk fields */
#endif

	/* host specific block data */
	unsigned int		max_seg_size;	/* see blk_queue_max_segment_size */
	unsigned short		max_segs;	/* see blk_queue_max_segments */
	unsigned short		unused;
	unsigned int		max_req_size;	/* maximum number of bytes in one req */
	unsigned int		max_blk_size;	/* maximum size of one mmc block */
	unsigned int		max_blk_count;	/* maximum number of blocks in one req */

	/* private data */
	spinlock_t		lock;		/* lock for claim and bus ops */

	struct mmc_ios		ios;		/* current io bus settings */
	u32			ocr;		/* the current OCR setting */

	/* group bitfields together to minimize padding */
	unsigned int		use_spi_crc:1;
	unsigned int		claimed:1;	/* host exclusively claimed */
	unsigned int		bus_dead:1;	/* bus has been released */
#ifdef CONFIG_MMC_DEBUG
	unsigned int		removed:1;	/* host is being removed */
#endif

	/* Only used with MMC_CAP_DISABLE */
	int			enabled;	/* host is enabled */
	int			rescan_disable;	/* disable card detection */
	int			nesting_cnt;	/* "enable" nesting count */
	int			en_dis_recurs;	/* detect recursion */
	unsigned int		disable_delay;	/* disable delay in msecs */
	struct delayed_work	disable;	/* disabling work */

	struct mmc_card		*card;		/* device attached to this host */

	wait_queue_head_t	wq;
	struct task_struct	*claimer;	/* task that has host claimed */
	int			claim_cnt;	/* "claim" nesting count */

	struct delayed_work	detect;

	const struct mmc_bus_ops *bus_ops;	/* current bus driver */
	unsigned int		bus_refs;	/* reference counter */

	unsigned int		sdio_irqs;
	struct task_struct	*sdio_irq_thread;
	atomic_t		sdio_irq_thread_abort;

	mmc_pm_flag_t		pm_flags;	/* requested pm features */

#ifdef CONFIG_LEDS_TRIGGERS
	struct led_trigger	*led;		/* activity led */
#endif

#ifdef CONFIG_REGULATOR
	bool			regulator_enabled; /* regulator state */
#endif

	struct dentry		*debugfs_root;

	unsigned long		private[0] ____cacheline_aligned;
};

extern struct mmc_host *mmc_alloc_host(int extra, struct device *);
extern int mmc_add_host(struct mmc_host *);
extern void mmc_remove_host(struct mmc_host *);
extern void mmc_free_host(struct mmc_host *);

static inline void *mmc_priv(struct mmc_host *host)
{
	return (void *)host->private;
}

#define mmc_host_is_spi(host)	((host)->caps & MMC_CAP_SPI)

#define mmc_dev(x)	((x)->parent)
#define mmc_classdev(x)	(&(x)->class_dev)
#define mmc_hostname(x)	(dev_name(&(x)->class_dev))

extern int mmc_suspend_host(struct mmc_host *);
extern int mmc_resume_host(struct mmc_host *);

extern int mmc_power_save_host(struct mmc_host *host);
extern int mmc_power_restore_host(struct mmc_host *host);

extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
extern void mmc_request_done(struct mmc_host *, struct mmc_request *);

static inline void mmc_signal_sdio_irq(struct mmc_host *host)
{
	host->ops->enable_sdio_irq(host, 0);
	wake_up_process(host->sdio_irq_thread);
}

struct regulator;

#ifdef CONFIG_REGULATOR
int mmc_regulator_get_ocrmask(struct regulator *supply);
int mmc_regulator_set_ocr(struct mmc_host *mmc,
			struct regulator *supply,
			unsigned short vdd_bit);
#else
static inline int mmc_regulator_get_ocrmask(struct regulator *supply)
{
	return 0;
}

static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
				 struct regulator *supply,
				 unsigned short vdd_bit)
{
	return 0;
}
#endif

int mmc_card_awake(struct mmc_host *host);
int mmc_card_sleep(struct mmc_host *host);
int mmc_card_can_sleep(struct mmc_host *host);

int mmc_host_enable(struct mmc_host *host);
int mmc_host_disable(struct mmc_host *host);
int mmc_host_lazy_disable(struct mmc_host *host);
int mmc_pm_notify(struct notifier_block *notify_block, unsigned long, void *);

static inline void mmc_set_disable_delay(struct mmc_host *host,
					 unsigned int disable_delay)
{
	host->disable_delay = disable_delay;
}

/* Module parameter */
extern int mmc_assume_removable;

static inline int mmc_card_is_removable(struct mmc_host *host)
{
	return !(host->caps & MMC_CAP_NONREMOVABLE) && mmc_assume_removable;
}

static inline int mmc_card_keep_power(struct mmc_host *host)
{
	return host->pm_flags & MMC_PM_KEEP_POWER;
}

static inline int mmc_card_wake_sdio_irq(struct mmc_host *host)
{
	return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ;
}
#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/linux/mmc/host.h
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*
	8	* Host driver specific definitions.
	9	*/
	10	#ifndef LINUX_MMC_HOST_H
	11	#define LINUX_MMC_HOST_H
	12
af8350c7	13	#include <linux/leds.h>
d43c36dc	14	#include <linux/sched.h>
af8350c7	15
aaac1b47	16	#include <linux/mmc/core.h>
da68c4eb	17	#include <linux/mmc/pm.h>
1da177e4 LT	18
	19	struct mmc_ios {
	20	unsigned int clock; /* clock rate */
	21	unsigned short vdd;
	22
4be34c99	23	/* vdd stores the bit number of the selected voltage range from below. */
1da177e4 LT	24
	25	unsigned char bus_mode; /* command output mode */
	26
	27	#define MMC_BUSMODE_OPENDRAIN 1
	28	#define MMC_BUSMODE_PUSHPULL 2
	29
865e9f13 PO	30	unsigned char chip_select; /* SPI chip select */
	31
	32	#define MMC_CS_DONTCARE 0
	33	#define MMC_CS_HIGH 1
	34	#define MMC_CS_LOW 2
	35
1da177e4 LT	36	unsigned char power_mode; /* power supply mode */
	37
	38	#define MMC_POWER_OFF 0
	39	#define MMC_POWER_UP 1
	40	#define MMC_POWER_ON 2
f218278a PO	41
	42	unsigned char bus_width; /* data bus width */
	43
	44	#define MMC_BUS_WIDTH_1 0
	45	#define MMC_BUS_WIDTH_4 2
b30f8af3	46	#define MMC_BUS_WIDTH_8 3
cd9277c0 PO	47
	48	unsigned char timing; /* timing specification used */
	49
	50	#define MMC_TIMING_LEGACY 0
	51	#define MMC_TIMING_MMC_HS 1
	52	#define MMC_TIMING_SD_HS 2
0f8d8ea6 AH	53
	54	unsigned char ddr; /* dual data rate used */
	55
	56	#define MMC_SDR_MODE 0
49e3b5a4 AH	57	#define MMC_1_2V_DDR_MODE 1
49e3b5a4 AH	58	#define MMC_1_8V_DDR_MODE 2
1da177e4 LT	59	};
	60
	61	struct mmc_host_ops {
8ea926b2 AH	62	/*
	63	* Hosts that support power saving can use the 'enable' and 'disable'
	64	* methods to exit and enter power saving states. 'enable' is called
	65	* when the host is claimed and 'disable' is called (or scheduled with
	66	* a delay) when the host is released. The 'disable' is scheduled if
	67	* the disable delay set by 'mmc_set_disable_delay()' is non-zero,
	68	* otherwise 'disable' is called immediately. 'disable' may be
	69	* scheduled repeatedly, to permit ever greater power saving at the
	70	* expense of ever greater latency to re-enable. Rescheduling is
	71	* determined by the return value of the 'disable' method. A positive
	72	* value gives the delay in milliseconds.
	73	*
	74	* In the case where a host function (like set_ios) may be called
	75	* with or without the host claimed, enabling and disabling can be
	76	* done directly and will nest correctly. Call 'mmc_host_enable()' and
	77	* 'mmc_host_lazy_disable()' for this purpose, but note that these
	78	* functions must be paired.
	79	*
	80	* Alternatively, 'mmc_host_enable()' may be paired with
	81	* 'mmc_host_disable()' which calls 'disable' immediately. In this
	82	* case the 'disable' method will be called with 'lazy' set to 0.
	83	* This is mainly useful for error paths.
	84	*
	85	* Because lazy disable may be called from a work queue, the 'disable'
	86	* method must claim the host when 'lazy' != 0, which will work
	87	* correctly because recursion is detected and handled.
	88	*/
	89	int (enable)(struct mmc_host host);
	90	int (disable)(struct mmc_host host, int lazy);
1da177e4	91	void (request)(struct mmc_host host, struct mmc_request *req);
28f52482 AV	92	/*
	93	* Avoid calling these three functions too often or in a "fast path",
	94	* since underlaying controller might implement them in an expensive
	95	* and/or slow way.
	96	*
	97	* Also note that these functions might sleep, so don't call them
	98	* in the atomic contexts!
08f80bb5 AV	99	*
	100	* Return values for the get_ro callback should be:
	101	* 0 for a read/write card
	102	* 1 for a read-only card
	103	* -ENOSYS when not supported (equal to NULL callback)
	104	* or a negative errno value when something bad happened
	105	*
ee63a7d2	106	* Return values for the get_cd callback should be:
08f80bb5 AV	107	* 0 for a absent card
	108	* 1 for a present card
	109	* -ENOSYS when not supported (equal to NULL callback)
	110	* or a negative errno value when something bad happened
28f52482	111	*/
1da177e4	112	void (set_ios)(struct mmc_host host, struct mmc_ios *ios);
a00fc090	113	int (get_ro)(struct mmc_host host);
28f52482 AV	114	int (get_cd)(struct mmc_host host);
28f52482 AV	115
17b759af	116	void (enable_sdio_irq)(struct mmc_host host, int enable);
3fcb027d DM	117
	118	/* optional callback for HC quirks */
	119	void (init_card)(struct mmc_host host, struct mmc_card *card);
1da177e4 LT	120	};
	121
	122	struct mmc_card;
	123	struct device;
	124
	125	struct mmc_host {
fcaf71fd GKH	126	struct device *parent;
fcaf71fd GKH	127	struct device class_dev;
dce77377	128	int index;
f57b225e	129	const struct mmc_host_ops *ops;
1da177e4 LT	130	unsigned int f_min;
1da177e4 LT	131	unsigned int f_max;
88ae8b86	132	unsigned int f_init;
1da177e4	133	u32 ocr_avail;
8f230f45 TI	134	u32 ocr_avail_sdio; /* SDIO-specific OCR */
	135	u32 ocr_avail_sd; /* SD-specific OCR */
	136	u32 ocr_avail_mmc; /* MMC-specific OCR */
4c2ef25f	137	struct notifier_block pm_notify;
1da177e4	138
55556da0	139	#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
f74d132c PO	140	#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
	141	#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
	142	#define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
	143	#define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
	144	#define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
	145	#define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
	146	#define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
	147	#define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
	148	#define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
	149	#define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
	150	#define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
	151	#define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
	152	#define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
	153	#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
	154	#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
	155	#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
	156
f218278a PO	157	unsigned long caps; /* Host capabilities */
	158
	159	#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
23af6039 PO	160	#define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */
	161	#define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */
	162	#define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */
	163	#define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */
	164	#define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */
b30f8af3	165	#define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */
8ea926b2	166	#define MMC_CAP_DISABLE (1 << 7) /* Can the host be disabled */
9feae246	167	#define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */
b1ebe384	168	#define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */
dfe86cba	169	#define MMC_CAP_ERASE (1 << 10) /* Allow erase/trim commands */
dfc13e84 HP	170	#define MMC_CAP_1_8V_DDR (1 << 11) /* can support */
	171	/* DDR mode at 1.8V */
	172	#define MMC_CAP_1_2V_DDR (1 << 12) /* can support */
	173	/* DDR mode at 1.2V */
ed919b01	174	#define MMC_CAP_POWER_OFF_CARD (1 << 13) /* Can power off after boot */
22113efd	175	#define MMC_CAP_BUS_WIDTH_TEST (1 << 14) /* CMD14/CMD19 bus width ok */
f218278a	176
da68c4eb NP	177	mmc_pm_flag_t pm_caps; /* supported pm features */
da68c4eb NP	178
04566831 LW	179	#ifdef CONFIG_MMC_CLKGATE
	180	int clk_requests; /* internal reference counter */
	181	unsigned int clk_delay; /* number of MCI clk hold cycles */
	182	bool clk_gated; /* clock gated */
	183	struct work_struct clk_gate_work; /* delayed clock gate */
	184	unsigned int clk_old; /* old clock value cache */
	185	spinlock_t clk_lock; /* lock for clk fields */
04566831 LW	186	#endif
04566831 LW	187
1da177e4 LT	188	/* host specific block data */
1da177e4 LT	189	unsigned int max_seg_size; /* see blk_queue_max_segment_size */
a36274e0	190	unsigned short max_segs; /* see blk_queue_max_segments */
1da177e4	191	unsigned short unused;
55db890a	192	unsigned int max_req_size; /* maximum number of bytes in one req */
fe4a3c7a	193	unsigned int max_blk_size; /* maximum size of one mmc block */
55db890a	194	unsigned int max_blk_count; /* maximum number of blocks in one req */
1da177e4 LT	195
1da177e4 LT	196	/* private data */
7ea239d9 PO	197	spinlock_t lock; /* lock for claim and bus ops */
7ea239d9 PO	198
1da177e4 LT	199	struct mmc_ios ios; /* current io bus settings */
	200	u32 ocr; /* the current OCR setting */
	201
97018580 DB	202	/* group bitfields together to minimize padding */
	203	unsigned int use_spi_crc:1;
	204	unsigned int claimed:1; /* host exclusively claimed */
	205	unsigned int bus_dead:1; /* bus has been released */
	206	#ifdef CONFIG_MMC_DEBUG
	207	unsigned int removed:1; /* host is being removed */
	208	#endif
	209
8ea926b2 AH	210	/* Only used with MMC_CAP_DISABLE */
8ea926b2 AH	211	int enabled; /* host is enabled */
4c2ef25f	212	int rescan_disable; /* disable card detection */
8ea926b2 AH	213	int nesting_cnt; /* "enable" nesting count */
	214	int en_dis_recurs; /* detect recursion */
	215	unsigned int disable_delay; /* disable delay in msecs */
	216	struct delayed_work disable; /* disabling work */
	217
b855885e	218	struct mmc_card card; / device attached to this host */
1da177e4 LT	219
1da177e4 LT	220	wait_queue_head_t wq;
319a3f14 AH	221	struct task_struct claimer; / task that has host claimed */
319a3f14 AH	222	int claim_cnt; /* "claim" nesting count */
f22ee4ed	223
c4028958	224	struct delayed_work detect;
01357dca	225
7ea239d9 PO	226	const struct mmc_bus_ops bus_ops; / current bus driver */
7ea239d9 PO	227	unsigned int bus_refs; /* reference counter */
7ea239d9	228
d1496c39 NP	229	unsigned int sdio_irqs;
	230	struct task_struct *sdio_irq_thread;
	231	atomic_t sdio_irq_thread_abort;
	232
da68c4eb NP	233	mmc_pm_flag_t pm_flags; /* requested pm features */
da68c4eb NP	234
af8350c7 PO	235	#ifdef CONFIG_LEDS_TRIGGERS
	236	struct led_trigger led; / activity led */
	237	#endif
	238
99fc5131 LW	239	#ifdef CONFIG_REGULATOR
	240	bool regulator_enabled; /* regulator state */
	241	#endif
	242
6edd8ee6 HS	243	struct dentry *debugfs_root;
6edd8ee6 HS	244
01357dca	245	unsigned long private[0] ____cacheline_aligned;
1da177e4 LT	246	};
	247
	248	extern struct mmc_host mmc_alloc_host(int extra, struct device );
	249	extern int mmc_add_host(struct mmc_host *);
	250	extern void mmc_remove_host(struct mmc_host *);
	251	extern void mmc_free_host(struct mmc_host *);
	252
01357dca RK	253	static inline void mmc_priv(struct mmc_host host)
	254	{
	255	return (void *)host->private;
	256	}
	257
97018580 DB	258	#define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI)
97018580 DB	259
fcaf71fd	260	#define mmc_dev(x) ((x)->parent)
11354d03	261	#define mmc_classdev(x) (&(x)->class_dev)
d1b26863	262	#define mmc_hostname(x) (dev_name(&(x)->class_dev))
1da177e4	263
1a13f8fa	264	extern int mmc_suspend_host(struct mmc_host *);
1da177e4 LT	265	extern int mmc_resume_host(struct mmc_host *);
1da177e4 LT	266
12ae637f OBC	267	extern int mmc_power_save_host(struct mmc_host *host);
12ae637f OBC	268	extern int mmc_power_restore_host(struct mmc_host *host);
eae1aeee	269
8dc00335	270	extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
1da177e4 LT	271	extern void mmc_request_done(struct mmc_host , struct mmc_request );
1da177e4 LT	272
17b759af NP	273	static inline void mmc_signal_sdio_irq(struct mmc_host *host)
	274	{
	275	host->ops->enable_sdio_irq(host, 0);
	276	wake_up_process(host->sdio_irq_thread);
	277	}
	278
5c13941a DB	279	struct regulator;
5c13941a DB	280
99fc5131	281	#ifdef CONFIG_REGULATOR
5c13941a	282	int mmc_regulator_get_ocrmask(struct regulator *supply);
99fc5131 LW	283	int mmc_regulator_set_ocr(struct mmc_host *mmc,
	284	struct regulator *supply,
	285	unsigned short vdd_bit);
	286	#else
	287	static inline int mmc_regulator_get_ocrmask(struct regulator *supply)
	288	{
	289	return 0;
	290	}
	291
	292	static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
	293	struct regulator *supply,
	294	unsigned short vdd_bit)
	295	{
	296	return 0;
	297	}
	298	#endif
5c13941a	299
b1ebe384 JL	300	int mmc_card_awake(struct mmc_host *host);
	301	int mmc_card_sleep(struct mmc_host *host);
	302	int mmc_card_can_sleep(struct mmc_host *host);
	303
8ea926b2 AH	304	int mmc_host_enable(struct mmc_host *host);
	305	int mmc_host_disable(struct mmc_host *host);
	306	int mmc_host_lazy_disable(struct mmc_host *host);
4c2ef25f	307	int mmc_pm_notify(struct notifier_block notify_block, unsigned long, void );
8ea926b2 AH	308
	309	static inline void mmc_set_disable_delay(struct mmc_host *host,
	310	unsigned int disable_delay)
	311	{
	312	host->disable_delay = disable_delay;
	313	}
	314
71d7d3d1 MF	315	/* Module parameter */
	316	extern int mmc_assume_removable;
	317
	318	static inline int mmc_card_is_removable(struct mmc_host *host)
	319	{
	320	return !(host->caps & MMC_CAP_NONREMOVABLE) && mmc_assume_removable;
	321	}
	322
a5e9425d	323	static inline int mmc_card_keep_power(struct mmc_host *host)
080bc977 OBC	324	{
	325	return host->pm_flags & MMC_PM_KEEP_POWER;
	326	}
	327
6b93d01f OBC	328	static inline int mmc_card_wake_sdio_irq(struct mmc_host *host)
	329	{
	330	return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ;
	331	}
1da177e4 LT	332	#endif
1da177e4 LT	333