[deliverable/linux.git] / drivers / mmc / host / dw_mmc.h

/*
 * Synopsys DesignWare Multimedia Card Interface driver
 *  (Based on NXP driver for lpc 31xx)
 *
 * Copyright (C) 2009 NXP Semiconductors
 * Copyright (C) 2009, 2010 Imagination Technologies Ltd.
 *
 * 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.
 */

#ifndef _DW_MMC_H_
#define _DW_MMC_H_

#define DW_MMC_240A		0x240a

#define SDMMC_CTRL		0x000
#define SDMMC_PWREN		0x004
#define SDMMC_CLKDIV		0x008
#define SDMMC_CLKSRC		0x00c
#define SDMMC_CLKENA		0x010
#define SDMMC_TMOUT		0x014
#define SDMMC_CTYPE		0x018
#define SDMMC_BLKSIZ		0x01c
#define SDMMC_BYTCNT		0x020
#define SDMMC_INTMASK		0x024
#define SDMMC_CMDARG		0x028
#define SDMMC_CMD		0x02c
#define SDMMC_RESP0		0x030
#define SDMMC_RESP1		0x034
#define SDMMC_RESP2		0x038
#define SDMMC_RESP3		0x03c
#define SDMMC_MINTSTS		0x040
#define SDMMC_RINTSTS		0x044
#define SDMMC_STATUS		0x048
#define SDMMC_FIFOTH		0x04c
#define SDMMC_CDETECT		0x050
#define SDMMC_WRTPRT		0x054
#define SDMMC_GPIO		0x058
#define SDMMC_TCBCNT		0x05c
#define SDMMC_TBBCNT		0x060
#define SDMMC_DEBNCE		0x064
#define SDMMC_USRID		0x068
#define SDMMC_VERID		0x06c
#define SDMMC_HCON		0x070
#define SDMMC_UHS_REG		0x074
#define SDMMC_BMOD		0x080
#define SDMMC_PLDMND		0x084
#define SDMMC_DBADDR		0x088
#define SDMMC_IDSTS		0x08c
#define SDMMC_IDINTEN		0x090
#define SDMMC_DSCADDR		0x094
#define SDMMC_BUFADDR		0x098
#define SDMMC_CDTHRCTL		0x100
#define SDMMC_DATA(x)		(x)

/*
 * Data offset is difference according to Version
 * Lower than 2.40a : data register offest is 0x100
 */
#define DATA_OFFSET		0x100
#define DATA_240A_OFFSET	0x200

/* shift bit field */
#define _SBF(f, v)		((v) << (f))

/* Control register defines */
#define SDMMC_CTRL_USE_IDMAC		BIT(25)
#define SDMMC_CTRL_CEATA_INT_EN		BIT(11)
#define SDMMC_CTRL_SEND_AS_CCSD		BIT(10)
#define SDMMC_CTRL_SEND_CCSD		BIT(9)
#define SDMMC_CTRL_ABRT_READ_DATA	BIT(8)
#define SDMMC_CTRL_SEND_IRQ_RESP	BIT(7)
#define SDMMC_CTRL_READ_WAIT		BIT(6)
#define SDMMC_CTRL_DMA_ENABLE		BIT(5)
#define SDMMC_CTRL_INT_ENABLE		BIT(4)
#define SDMMC_CTRL_DMA_RESET		BIT(2)
#define SDMMC_CTRL_FIFO_RESET		BIT(1)
#define SDMMC_CTRL_RESET		BIT(0)
/* Clock Enable register defines */
#define SDMMC_CLKEN_LOW_PWR		BIT(16)
#define SDMMC_CLKEN_ENABLE		BIT(0)
/* time-out register defines */
#define SDMMC_TMOUT_DATA(n)		_SBF(8, (n))
#define SDMMC_TMOUT_DATA_MSK		0xFFFFFF00
#define SDMMC_TMOUT_RESP(n)		((n) & 0xFF)
#define SDMMC_TMOUT_RESP_MSK		0xFF
/* card-type register defines */
#define SDMMC_CTYPE_8BIT		BIT(16)
#define SDMMC_CTYPE_4BIT		BIT(0)
#define SDMMC_CTYPE_1BIT		0
/* Interrupt status & mask register defines */
#define SDMMC_INT_SDIO(n)		BIT(16 + (n))
#define SDMMC_INT_EBE			BIT(15)
#define SDMMC_INT_ACD			BIT(14)
#define SDMMC_INT_SBE			BIT(13)
#define SDMMC_INT_HLE			BIT(12)
#define SDMMC_INT_FRUN			BIT(11)
#define SDMMC_INT_HTO			BIT(10)
#define SDMMC_INT_DRTO			BIT(9)
#define SDMMC_INT_RTO			BIT(8)
#define SDMMC_INT_DCRC			BIT(7)
#define SDMMC_INT_RCRC			BIT(6)
#define SDMMC_INT_RXDR			BIT(5)
#define SDMMC_INT_TXDR			BIT(4)
#define SDMMC_INT_DATA_OVER		BIT(3)
#define SDMMC_INT_CMD_DONE		BIT(2)
#define SDMMC_INT_RESP_ERR		BIT(1)
#define SDMMC_INT_CD			BIT(0)
#define SDMMC_INT_ERROR			0xbfc2
/* Command register defines */
#define SDMMC_CMD_START			BIT(31)
#define SDMMC_CMD_USE_HOLD_REG	BIT(29)
#define SDMMC_CMD_CCS_EXP		BIT(23)
#define SDMMC_CMD_CEATA_RD		BIT(22)
#define SDMMC_CMD_UPD_CLK		BIT(21)
#define SDMMC_CMD_INIT			BIT(15)
#define SDMMC_CMD_STOP			BIT(14)
#define SDMMC_CMD_PRV_DAT_WAIT		BIT(13)
#define SDMMC_CMD_SEND_STOP		BIT(12)
#define SDMMC_CMD_STRM_MODE		BIT(11)
#define SDMMC_CMD_DAT_WR		BIT(10)
#define SDMMC_CMD_DAT_EXP		BIT(9)
#define SDMMC_CMD_RESP_CRC		BIT(8)
#define SDMMC_CMD_RESP_LONG		BIT(7)
#define SDMMC_CMD_RESP_EXP		BIT(6)
#define SDMMC_CMD_INDX(n)		((n) & 0x1F)
/* Status register defines */
#define SDMMC_GET_FCNT(x)		(((x)>>17) & 0x1FFF)
/* FIFOTH register defines */
#define SDMMC_SET_FIFOTH(m, r, t)	(((m) & 0x7) << 28 | \
					 ((r) & 0xFFF) << 16 | \
					 ((t) & 0xFFF))
/* Internal DMAC interrupt defines */
#define SDMMC_IDMAC_INT_AI		BIT(9)
#define SDMMC_IDMAC_INT_NI		BIT(8)
#define SDMMC_IDMAC_INT_CES		BIT(5)
#define SDMMC_IDMAC_INT_DU		BIT(4)
#define SDMMC_IDMAC_INT_FBE		BIT(2)
#define SDMMC_IDMAC_INT_RI		BIT(1)
#define SDMMC_IDMAC_INT_TI		BIT(0)
/* Internal DMAC bus mode bits */
#define SDMMC_IDMAC_ENABLE		BIT(7)
#define SDMMC_IDMAC_FB			BIT(1)
#define SDMMC_IDMAC_SWRESET		BIT(0)
/* Version ID register define */
#define SDMMC_GET_VERID(x)		((x) & 0xFFFF)
/* Card read threshold */
#define SDMMC_SET_RD_THLD(v, x)		(((v) & 0x1FFF) << 16 | (x))

/* Register access macros */
#define mci_readl(dev, reg)			\
	__raw_readl((dev)->regs + SDMMC_##reg)
#define mci_writel(dev, reg, value)			\
	__raw_writel((value), (dev)->regs + SDMMC_##reg)

/* 16-bit FIFO access macros */
#define mci_readw(dev, reg)			\
	__raw_readw((dev)->regs + SDMMC_##reg)
#define mci_writew(dev, reg, value)			\
	__raw_writew((value), (dev)->regs + SDMMC_##reg)

/* 64-bit FIFO access macros */
#ifdef readq
#define mci_readq(dev, reg)			\
	__raw_readq((dev)->regs + SDMMC_##reg)
#define mci_writeq(dev, reg, value)			\
	__raw_writeq((value), (dev)->regs + SDMMC_##reg)
#else
/*
 * Dummy readq implementation for architectures that don't define it.
 *
 * We would assume that none of these architectures would configure
 * the IP block with a 64bit FIFO width, so this code will never be
 * executed on those machines. Defining these macros here keeps the
 * rest of the code free from ifdefs.
 */
#define mci_readq(dev, reg)			\
	(*(volatile u64 __force *)((dev)->regs + SDMMC_##reg))
#define mci_writeq(dev, reg, value)			\
	(*(volatile u64 __force *)((dev)->regs + SDMMC_##reg) = (value))
#endif

extern int dw_mci_probe(struct dw_mci *host);
extern void dw_mci_remove(struct dw_mci *host);
#ifdef CONFIG_PM_SLEEP
extern int dw_mci_suspend(struct dw_mci *host);
extern int dw_mci_resume(struct dw_mci *host);
#endif

/**
 * struct dw_mci_slot - MMC slot state
 * @mmc: The mmc_host representing this slot.
 * @host: The MMC controller this slot is using.
 * @quirks: Slot-level quirks (DW_MCI_SLOT_QUIRK_XXX)
 * @ctype: Card type for this slot.
 * @mrq: mmc_request currently being processed or waiting to be
 *	processed, or NULL when the slot is idle.
 * @queue_node: List node for placing this node in the @queue list of
 *	&struct dw_mci.
 * @clock: Clock rate configured by set_ios(). Protected by host->lock.
 * @__clk_old: The last updated clock with reflecting clock divider.
 *	Keeping track of this helps us to avoid spamming the console
 *	with CONFIG_MMC_CLKGATE.
 * @flags: Random state bits associated with the slot.
 * @id: Number of this slot.
 * @last_detect_state: Most recently observed card detect state.
 */
struct dw_mci_slot {
	struct mmc_host		*mmc;
	struct dw_mci		*host;

	int			quirks;

	u32			ctype;

	struct mmc_request	*mrq;
	struct list_head	queue_node;

	unsigned int		clock;
	unsigned int		__clk_old;

	unsigned long		flags;
#define DW_MMC_CARD_PRESENT	0
#define DW_MMC_CARD_NEED_INIT	1
	int			id;
	int			last_detect_state;
};

struct dw_mci_tuning_data {
	const u8 *blk_pattern;
	unsigned int blksz;
};

/**
 * dw_mci driver data - dw-mshc implementation specific driver data.
 * @caps: mmc subsystem specified capabilities of the controller(s).
 * @init: early implementation specific initialization.
 * @setup_clock: implementation specific clock configuration.
 * @prepare_command: handle CMD register extensions.
 * @set_ios: handle bus specific extensions.
 * @parse_dt: parse implementation specific device tree properties.
 * @execute_tuning: implementation specific tuning procedure.
 *
 * Provide controller implementation specific extensions. The usage of this
 * data structure is fully optional and usage of each member in this structure
 * is optional as well.
 */
struct dw_mci_drv_data {
	unsigned long	*caps;
	int		(*init)(struct dw_mci *host);
	int		(*setup_clock)(struct dw_mci *host);
	void		(*prepare_command)(struct dw_mci *host, u32 *cmdr);
	void		(*set_ios)(struct dw_mci *host, struct mmc_ios *ios);
	int		(*parse_dt)(struct dw_mci *host);
	int		(*execute_tuning)(struct dw_mci_slot *slot, u32 opcode,
					struct dw_mci_tuning_data *tuning_data);
};
#endif /* _DW_MMC_H_ */
Commit	Line	Data
f95f3850 WN	1	/*
	2	* Synopsys DesignWare Multimedia Card Interface driver
	3	* (Based on NXP driver for lpc 31xx)
	4	*
	5	* Copyright (C) 2009 NXP Semiconductors
	6	* Copyright (C) 2009, 2010 Imagination Technologies Ltd.
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*/
	13
	14	#ifndef _DW_MMC_H_
	15	#define _DW_MMC_H_
	16
4e0a5adf JC	17	#define DW_MMC_240A 0x240a
4e0a5adf JC	18
f95f3850 WN	19	#define SDMMC_CTRL 0x000
	20	#define SDMMC_PWREN 0x004
	21	#define SDMMC_CLKDIV 0x008
	22	#define SDMMC_CLKSRC 0x00c
	23	#define SDMMC_CLKENA 0x010
	24	#define SDMMC_TMOUT 0x014
	25	#define SDMMC_CTYPE 0x018
	26	#define SDMMC_BLKSIZ 0x01c
	27	#define SDMMC_BYTCNT 0x020
	28	#define SDMMC_INTMASK 0x024
	29	#define SDMMC_CMDARG 0x028
	30	#define SDMMC_CMD 0x02c
	31	#define SDMMC_RESP0 0x030
	32	#define SDMMC_RESP1 0x034
	33	#define SDMMC_RESP2 0x038
	34	#define SDMMC_RESP3 0x03c
	35	#define SDMMC_MINTSTS 0x040
	36	#define SDMMC_RINTSTS 0x044
	37	#define SDMMC_STATUS 0x048
	38	#define SDMMC_FIFOTH 0x04c
	39	#define SDMMC_CDETECT 0x050
	40	#define SDMMC_WRTPRT 0x054
	41	#define SDMMC_GPIO 0x058
	42	#define SDMMC_TCBCNT 0x05c
	43	#define SDMMC_TBBCNT 0x060
	44	#define SDMMC_DEBNCE 0x064
	45	#define SDMMC_USRID 0x068
	46	#define SDMMC_VERID 0x06c
	47	#define SDMMC_HCON 0x070
41babf75	48	#define SDMMC_UHS_REG 0x074
f95f3850 WN	49	#define SDMMC_BMOD 0x080
	50	#define SDMMC_PLDMND 0x084
	51	#define SDMMC_DBADDR 0x088
	52	#define SDMMC_IDSTS 0x08c
	53	#define SDMMC_IDINTEN 0x090
	54	#define SDMMC_DSCADDR 0x094
	55	#define SDMMC_BUFADDR 0x098
f1d2736c	56	#define SDMMC_CDTHRCTL 0x100
4e0a5adf JC	57	#define SDMMC_DATA(x) (x)
	58
	59	/*
	60	* Data offset is difference according to Version
	61	* Lower than 2.40a : data register offest is 0x100
	62	*/
	63	#define DATA_OFFSET 0x100
	64	#define DATA_240A_OFFSET 0x200
f95f3850 WN	65
	66	/* shift bit field */
	67	#define _SBF(f, v) ((v) << (f))
	68
	69	/* Control register defines */
	70	#define SDMMC_CTRL_USE_IDMAC BIT(25)
	71	#define SDMMC_CTRL_CEATA_INT_EN BIT(11)
	72	#define SDMMC_CTRL_SEND_AS_CCSD BIT(10)
	73	#define SDMMC_CTRL_SEND_CCSD BIT(9)
	74	#define SDMMC_CTRL_ABRT_READ_DATA BIT(8)
	75	#define SDMMC_CTRL_SEND_IRQ_RESP BIT(7)
	76	#define SDMMC_CTRL_READ_WAIT BIT(6)
	77	#define SDMMC_CTRL_DMA_ENABLE BIT(5)
	78	#define SDMMC_CTRL_INT_ENABLE BIT(4)
	79	#define SDMMC_CTRL_DMA_RESET BIT(2)
	80	#define SDMMC_CTRL_FIFO_RESET BIT(1)
	81	#define SDMMC_CTRL_RESET BIT(0)
	82	/* Clock Enable register defines */
	83	#define SDMMC_CLKEN_LOW_PWR BIT(16)
	84	#define SDMMC_CLKEN_ENABLE BIT(0)
	85	/* time-out register defines */
	86	#define SDMMC_TMOUT_DATA(n) _SBF(8, (n))
	87	#define SDMMC_TMOUT_DATA_MSK 0xFFFFFF00
	88	#define SDMMC_TMOUT_RESP(n) ((n) & 0xFF)
	89	#define SDMMC_TMOUT_RESP_MSK 0xFF
	90	/* card-type register defines */
	91	#define SDMMC_CTYPE_8BIT BIT(16)
	92	#define SDMMC_CTYPE_4BIT BIT(0)
	93	#define SDMMC_CTYPE_1BIT 0
	94	/* Interrupt status & mask register defines */
1a5c8e1f	95	#define SDMMC_INT_SDIO(n) BIT(16 + (n))
f95f3850 WN	96	#define SDMMC_INT_EBE BIT(15)
	97	#define SDMMC_INT_ACD BIT(14)
	98	#define SDMMC_INT_SBE BIT(13)
	99	#define SDMMC_INT_HLE BIT(12)
	100	#define SDMMC_INT_FRUN BIT(11)
	101	#define SDMMC_INT_HTO BIT(10)
3f7eec62	102	#define SDMMC_INT_DRTO BIT(9)
f95f3850 WN	103	#define SDMMC_INT_RTO BIT(8)
	104	#define SDMMC_INT_DCRC BIT(7)
	105	#define SDMMC_INT_RCRC BIT(6)
	106	#define SDMMC_INT_RXDR BIT(5)
	107	#define SDMMC_INT_TXDR BIT(4)
	108	#define SDMMC_INT_DATA_OVER BIT(3)
	109	#define SDMMC_INT_CMD_DONE BIT(2)
	110	#define SDMMC_INT_RESP_ERR BIT(1)
	111	#define SDMMC_INT_CD BIT(0)
	112	#define SDMMC_INT_ERROR 0xbfc2
	113	/* Command register defines */
	114	#define SDMMC_CMD_START BIT(31)
eede2111	115	#define SDMMC_CMD_USE_HOLD_REG BIT(29)
f95f3850 WN	116	#define SDMMC_CMD_CCS_EXP BIT(23)
	117	#define SDMMC_CMD_CEATA_RD BIT(22)
	118	#define SDMMC_CMD_UPD_CLK BIT(21)
	119	#define SDMMC_CMD_INIT BIT(15)
	120	#define SDMMC_CMD_STOP BIT(14)
	121	#define SDMMC_CMD_PRV_DAT_WAIT BIT(13)
	122	#define SDMMC_CMD_SEND_STOP BIT(12)
	123	#define SDMMC_CMD_STRM_MODE BIT(11)
	124	#define SDMMC_CMD_DAT_WR BIT(10)
	125	#define SDMMC_CMD_DAT_EXP BIT(9)
	126	#define SDMMC_CMD_RESP_CRC BIT(8)
	127	#define SDMMC_CMD_RESP_LONG BIT(7)
	128	#define SDMMC_CMD_RESP_EXP BIT(6)
	129	#define SDMMC_CMD_INDX(n) ((n) & 0x1F)
	130	/* Status register defines */
ee5d19b2	131	#define SDMMC_GET_FCNT(x) (((x)>>17) & 0x1FFF)
52426899 SJ	132	/* FIFOTH register defines */
	133	#define SDMMC_SET_FIFOTH(m, r, t) (((m) & 0x7) << 28 \| \
	134	((r) & 0xFFF) << 16 \| \
	135	((t) & 0xFFF))
f95f3850 WN	136	/* Internal DMAC interrupt defines */
	137	#define SDMMC_IDMAC_INT_AI BIT(9)
	138	#define SDMMC_IDMAC_INT_NI BIT(8)
	139	#define SDMMC_IDMAC_INT_CES BIT(5)
	140	#define SDMMC_IDMAC_INT_DU BIT(4)
	141	#define SDMMC_IDMAC_INT_FBE BIT(2)
	142	#define SDMMC_IDMAC_INT_RI BIT(1)
	143	#define SDMMC_IDMAC_INT_TI BIT(0)
	144	/* Internal DMAC bus mode bits */
	145	#define SDMMC_IDMAC_ENABLE BIT(7)
	146	#define SDMMC_IDMAC_FB BIT(1)
	147	#define SDMMC_IDMAC_SWRESET BIT(0)
4e0a5adf JC	148	/* Version ID register define */
4e0a5adf JC	149	#define SDMMC_GET_VERID(x) ((x) & 0xFFFF)
f1d2736c SJ	150	/* Card read threshold */
f1d2736c SJ	151	#define SDMMC_SET_RD_THLD(v, x) (((v) & 0x1FFF) << 16 \| (x))
f95f3850 WN	152
	153	/* Register access macros */
	154	#define mci_readl(dev, reg) \
892b1e31	155	__raw_readl((dev)->regs + SDMMC_##reg)
f95f3850	156	#define mci_writel(dev, reg, value) \
892b1e31	157	__raw_writel((value), (dev)->regs + SDMMC_##reg)
f95f3850 WN	158
	159	/* 16-bit FIFO access macros */
	160	#define mci_readw(dev, reg) \
892b1e31	161	__raw_readw((dev)->regs + SDMMC_##reg)
f95f3850	162	#define mci_writew(dev, reg, value) \
892b1e31	163	__raw_writew((value), (dev)->regs + SDMMC_##reg)
f95f3850 WN	164
	165	/* 64-bit FIFO access macros */
	166	#ifdef readq
	167	#define mci_readq(dev, reg) \
892b1e31	168	__raw_readq((dev)->regs + SDMMC_##reg)
f95f3850	169	#define mci_writeq(dev, reg, value) \
892b1e31	170	__raw_writeq((value), (dev)->regs + SDMMC_##reg)
f95f3850 WN	171	#else
	172	/*
	173	* Dummy readq implementation for architectures that don't define it.
	174	*
	175	* We would assume that none of these architectures would configure
	176	* the IP block with a 64bit FIFO width, so this code will never be
	177	* executed on those machines. Defining these macros here keeps the
	178	* rest of the code free from ifdefs.
	179	*/
	180	#define mci_readq(dev, reg) \
892b1e31	181	((volatile u64 __force )((dev)->regs + SDMMC_##reg))
f95f3850	182	#define mci_writeq(dev, reg, value) \
892b1e31	183	((volatile u64 __force )((dev)->regs + SDMMC_##reg) = (value))
f95f3850 WN	184	#endif
f95f3850 WN	185
62ca8034 SH	186	extern int dw_mci_probe(struct dw_mci *host);
62ca8034 SH	187	extern void dw_mci_remove(struct dw_mci *host);
370aede6	188	#ifdef CONFIG_PM_SLEEP
62ca8034 SH	189	extern int dw_mci_suspend(struct dw_mci *host);
	190	extern int dw_mci_resume(struct dw_mci *host);
	191	#endif
	192
0976f16d SJ	193	/**
	194	* struct dw_mci_slot - MMC slot state
	195	* @mmc: The mmc_host representing this slot.
	196	* @host: The MMC controller this slot is using.
	197	* @quirks: Slot-level quirks (DW_MCI_SLOT_QUIRK_XXX)
0976f16d SJ	198	* @ctype: Card type for this slot.
	199	* @mrq: mmc_request currently being processed or waiting to be
	200	* processed, or NULL when the slot is idle.
	201	* @queue_node: List node for placing this node in the @queue list of
	202	* &struct dw_mci.
	203	* @clock: Clock rate configured by set_ios(). Protected by host->lock.
	204	* @__clk_old: The last updated clock with reflecting clock divider.
	205	* Keeping track of this helps us to avoid spamming the console
	206	* with CONFIG_MMC_CLKGATE.
	207	* @flags: Random state bits associated with the slot.
	208	* @id: Number of this slot.
	209	* @last_detect_state: Most recently observed card detect state.
	210	*/
	211	struct dw_mci_slot {
	212	struct mmc_host *mmc;
	213	struct dw_mci *host;
	214
	215	int quirks;
0976f16d SJ	216
	217	u32 ctype;
	218
	219	struct mmc_request *mrq;
	220	struct list_head queue_node;
	221
	222	unsigned int clock;
	223	unsigned int __clk_old;
	224
	225	unsigned long flags;
	226	#define DW_MMC_CARD_PRESENT 0
	227	#define DW_MMC_CARD_NEED_INIT 1
	228	int id;
	229	int last_detect_state;
	230	};
	231
	232	struct dw_mci_tuning_data {
	233	const u8 *blk_pattern;
	234	unsigned int blksz;
	235	};
	236
800d78bf TA	237	/**
	238	* dw_mci driver data - dw-mshc implementation specific driver data.
	239	* @caps: mmc subsystem specified capabilities of the controller(s).
	240	* @init: early implementation specific initialization.
	241	* @setup_clock: implementation specific clock configuration.
	242	* @prepare_command: handle CMD register extensions.
	243	* @set_ios: handle bus specific extensions.
	244	* @parse_dt: parse implementation specific device tree properties.
5532ec51	245	* @execute_tuning: implementation specific tuning procedure.
800d78bf TA	246	*
	247	* Provide controller implementation specific extensions. The usage of this
	248	* data structure is fully optional and usage of each member in this structure
	249	* is optional as well.
	250	*/
	251	struct dw_mci_drv_data {
	252	unsigned long *caps;
	253	int (init)(struct dw_mci host);
	254	int (setup_clock)(struct dw_mci host);
	255	void (prepare_command)(struct dw_mci host, u32 *cmdr);
	256	void (set_ios)(struct dw_mci host, struct mmc_ios *ios);
	257	int (parse_dt)(struct dw_mci host);
0976f16d SJ	258	int (execute_tuning)(struct dw_mci_slot slot, u32 opcode,
0976f16d SJ	259	struct dw_mci_tuning_data *tuning_data);
800d78bf	260	};
f95f3850	261	#endif /* _DW_MMC_H_ */