drivers/mmc/host/tmio_mmc.h - arm/linux - Git at Google


            
            /*

            
             * Driver for the MMC / SD / SDIO cell found in:

            
             *

            
             * TC6393XB TC6391XB TC6387XB T7L66XB ASIC3

            
             *

            
             * Copyright (C) 2015-17 Renesas Electronics Corporation

            
             * Copyright (C) 2016-17 Sang Engineering, Wolfram Sang

            
             * Copyright (C) 2016-17 Horms Solutions, Simon Horman

            
             * Copyright (C) 2007 Ian Molton

            
             * Copyright (C) 2004 Ian Molton

            
             *

            
             * 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.

            
             *

            
             */


            #ifndef TMIO_MMC_H

            
            #define TMIO_MMC_H


            #include <linux/dmaengine.h>

            
            #include <linux/highmem.h>

            
            #include <linux/mutex.h>

            
            #include <linux/pagemap.h>

            
            #include <linux/scatterlist.h>

            
            #include <linux/spinlock.h>

            
            #include <linux/interrupt.h>


            #define CTL_SD_CMD 0x00

            
            #define CTL_ARG_REG 0x04

            
            #define CTL_STOP_INTERNAL_ACTION 0x08

            
            #define CTL_XFER_BLK_COUNT 0xa

            
            #define CTL_RESPONSE 0x0c

            
            /* driver merges STATUS and following STATUS2 */

            
            #define CTL_STATUS 0x1c

            
            /* driver merges IRQ_MASK and following IRQ_MASK2 */

            
            #define CTL_IRQ_MASK 0x20

            
            #define CTL_SD_CARD_CLK_CTL 0x24

            
            #define CTL_SD_XFER_LEN 0x26

            
            #define CTL_SD_MEM_CARD_OPT 0x28

            
            #define CTL_SD_ERROR_DETAIL_STATUS 0x2c

            
            #define CTL_SD_DATA_PORT 0x30

            
            #define CTL_TRANSACTION_CTL 0x34

            
            #define CTL_SDIO_STATUS 0x36

            
            #define CTL_SDIO_IRQ_MASK 0x38

            
            #define CTL_DMA_ENABLE 0xd8

            
            #define CTL_RESET_SD 0xe0

            
            #define CTL_VERSION 0xe2

            
            #define CTL_SDIO_REGS 0x100

            
            #define CTL_CLK_AND_WAIT_CTL 0x138

            
            #define CTL_RESET_SDIO 0x1e0


            /* Definitions for values the CTL_STOP_INTERNAL_ACTION register can take */

            
            #define TMIO_STOP_STP		BIT(0)

            
            #define TMIO_STOP_SEC		BIT(8)


            /* Definitions for values the CTL_STATUS register can take */

            
            #define TMIO_STAT_CMDRESPEND    BIT(0)

            
            #define TMIO_STAT_DATAEND       BIT(2)

            
            #define TMIO_STAT_CARD_REMOVE   BIT(3)

            
            #define TMIO_STAT_CARD_INSERT   BIT(4)

            
            #define TMIO_STAT_SIGSTATE      BIT(5)

            
            #define TMIO_STAT_WRPROTECT     BIT(7)

            
            #define TMIO_STAT_CARD_REMOVE_A BIT(8)

            
            #define TMIO_STAT_CARD_INSERT_A BIT(9)

            
            #define TMIO_STAT_SIGSTATE_A    BIT(10)


            /* These belong technically to CTL_STATUS2, but the driver merges them */

            
            #define TMIO_STAT_CMD_IDX_ERR   BIT(16)

            
            #define TMIO_STAT_CRCFAIL       BIT(17)

            
            #define TMIO_STAT_STOPBIT_ERR   BIT(18)

            
            #define TMIO_STAT_DATATIMEOUT   BIT(19)

            
            #define TMIO_STAT_RXOVERFLOW    BIT(20)

            
            #define TMIO_STAT_TXUNDERRUN    BIT(21)

            
            #define TMIO_STAT_CMDTIMEOUT    BIT(22)

            
            #define TMIO_STAT_DAT0		BIT(23)	/* only known on R-Car so far */

            
            #define TMIO_STAT_RXRDY         BIT(24)

            
            #define TMIO_STAT_TXRQ          BIT(25)

            
            #define TMIO_STAT_ILL_FUNC      BIT(29) /* only when !TMIO_MMC_HAS_IDLE_WAIT */

            
            #define TMIO_STAT_SCLKDIVEN     BIT(29) /* only when TMIO_MMC_HAS_IDLE_WAIT */

            
            #define TMIO_STAT_CMD_BUSY      BIT(30)

            
            #define TMIO_STAT_ILL_ACCESS    BIT(31)


            /* Definitions for values the CTL_SD_CARD_CLK_CTL register can take */

            
            #define	CLK_CTL_DIV_MASK	0xff

            
            #define	CLK_CTL_SCLKEN		BIT(8)


            /* Definitions for values the CTL_SD_MEM_CARD_OPT register can take */

            
            #define CARD_OPT_WIDTH8		BIT(13)

            
            #define CARD_OPT_WIDTH		BIT(15)


            /* Definitions for values the CTL_SDIO_STATUS register can take */

            
            #define TMIO_SDIO_STAT_IOIRQ	0x0001

            
            #define TMIO_SDIO_STAT_EXPUB52	0x4000

            
            #define TMIO_SDIO_STAT_EXWT	0x8000

            
            #define TMIO_SDIO_MASK_ALL	0xc007


            #define TMIO_SDIO_SETBITS_MASK	0x0006


            /* Definitions for values the CTL_DMA_ENABLE register can take */

            
            #define DMA_ENABLE_DMASDRW	BIT(1)


            /* Define some IRQ masks */

            
            /* This is the mask used at reset by the chip */

            
            #define TMIO_MASK_ALL           0x837f031d

            
            #define TMIO_MASK_READOP  (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND)

            
            #define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND)

            
            #define TMIO_MASK_CMD     (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \

            
            		TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT)

            
            #define TMIO_MASK_IRQ     (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD)


            struct tmio_mmc_data;

            
            struct tmio_mmc_host;


            struct tmio_mmc_dma {

            
            	enum dma_slave_buswidth dma_buswidth;

            
            	bool (*filter)(struct dma_chan *chan, void *arg);

            
            	void (*enable)(struct tmio_mmc_host *host, bool enable);

            
            };


            struct tmio_mmc_dma_ops {

            
            	void (*start)(struct tmio_mmc_host *host, struct mmc_data *data);

            
            	void (*enable)(struct tmio_mmc_host *host, bool enable);

            
            	void (*request)(struct tmio_mmc_host *host,

            
            			struct tmio_mmc_data *pdata);

            
            	void (*release)(struct tmio_mmc_host *host);

            
            	void (*abort)(struct tmio_mmc_host *host);

            
            	void (*dataend)(struct tmio_mmc_host *host);

            
            };


            struct tmio_mmc_host {

            
            	void __iomem *ctl;

            
            	struct mmc_command      *cmd;

            
            	struct mmc_request      *mrq;

            
            	struct mmc_data         *data;

            
            	struct mmc_host         *mmc;


            	/* Callbacks for clock / power control */

            
            	void (*set_pwr)(struct platform_device *host, int state);

            
            	void (*set_clk_div)(struct platform_device *host, int state);


            	/* pio related stuff */

            
            	struct scatterlist      *sg_ptr;

            
            	struct scatterlist      *sg_orig;

            
            	unsigned int            sg_len;

            
            	unsigned int            sg_off;

            
            	unsigned long		bus_shift;


            	struct platform_device *pdev;

            
            	struct tmio_mmc_data *pdata;

            
            	struct tmio_mmc_dma	*dma;


            	/* DMA support */

            
            	bool			force_pio;

            
            	struct dma_chan		*chan_rx;

            
            	struct dma_chan		*chan_tx;

            
            	struct completion	dma_dataend;

            
            	struct tasklet_struct	dma_complete;

            
            	struct tasklet_struct	dma_issue;

            
            	struct scatterlist	bounce_sg;

            
            	u8			*bounce_buf;


            	/* Track lost interrupts */

            
            	struct delayed_work	delayed_reset_work;

            
            	struct work_struct	done;


            	/* Cache */

            
            	u32			sdcard_irq_mask;

            
            	u32			sdio_irq_mask;

            
            	unsigned int		clk_cache;


            	spinlock_t		lock;		/* protect host private data */

            
            	unsigned long		last_req_ts;

            
            	struct mutex		ios_lock;	/* protect set_ios() context */

            
            	bool			native_hotplug;

            
            	bool			sdio_irq_enabled;

            
            	u32			scc_tappos;


            	/* Mandatory callback */

            
            	int (*clk_enable)(struct tmio_mmc_host *host);


            	/* Optional callbacks */

            
            	unsigned int (*clk_update)(struct tmio_mmc_host *host,

            
            				   unsigned int new_clock);

            
            	void (*clk_disable)(struct tmio_mmc_host *host);

            
            	int (*multi_io_quirk)(struct mmc_card *card,

            
            			      unsigned int direction, int blk_size);

            
            	int (*card_busy)(struct mmc_host *mmc);

            
            	int (*start_signal_voltage_switch)(struct mmc_host *mmc,

            
            					   struct mmc_ios *ios);

            
            	int (*write16_hook)(struct tmio_mmc_host *host, int addr);

            
            	void (*hw_reset)(struct tmio_mmc_host *host);

            
            	void (*prepare_tuning)(struct tmio_mmc_host *host, unsigned long tap);

            
            	bool (*check_scc_error)(struct tmio_mmc_host *host);


            	/*

            
            	 * Mandatory callback for tuning to occur which is optional for SDR50

            
            	 * and mandatory for SDR104.

            
            	 */

            
            	unsigned int (*init_tuning)(struct tmio_mmc_host *host);

            
            	int (*select_tuning)(struct tmio_mmc_host *host);


            	/* Tuning values: 1 for success, 0 for failure */

            
            	DECLARE_BITMAP(taps, BITS_PER_BYTE * sizeof(long));

            
            	unsigned int tap_num;


            	const struct tmio_mmc_dma_ops *dma_ops;

            
            };


            struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev);

            
            void tmio_mmc_host_free(struct tmio_mmc_host *host);

            
            int tmio_mmc_host_probe(struct tmio_mmc_host *host,

            
            			struct tmio_mmc_data *pdata,

            
            			const struct tmio_mmc_dma_ops *dma_ops);

            
            void tmio_mmc_host_remove(struct tmio_mmc_host *host);

            
            void tmio_mmc_do_data_irq(struct tmio_mmc_host *host);


            void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i);

            
            void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i);

            
            irqreturn_t tmio_mmc_irq(int irq, void *devid);


            static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg,

            
            					 unsigned long *flags)

            
            {

            
            	local_irq_save(*flags);

            
            	return kmap_atomic(sg_page(sg)) + sg->offset;

            
            }


            static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg,

            
            					  unsigned long *flags, void *virt)

            
            {

            
            	kunmap_atomic(virt - sg->offset);

            
            	local_irq_restore(*flags);

            
            }


            #ifdef CONFIG_PM

            
            int tmio_mmc_host_runtime_suspend(struct device *dev);

            
            int tmio_mmc_host_runtime_resume(struct device *dev);

            
            #endif


            static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr)

            
            {

            
            	return readw(host->ctl + (addr << host->bus_shift));

            
            }


            static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr,

            
            				      u16 *buf, int count)

            
            {

            
            	readsw(host->ctl + (addr << host->bus_shift), buf, count);

            
            }


            static inline u32 sd_ctrl_read16_and_16_as_32(struct tmio_mmc_host *host,

            
            					      int addr)

            
            {

            
            	return readw(host->ctl + (addr << host->bus_shift)) |

            
            	       readw(host->ctl + ((addr + 2) << host->bus_shift)) << 16;

            
            }


            static inline void sd_ctrl_read32_rep(struct tmio_mmc_host *host, int addr,

            
            				      u32 *buf, int count)

            
            {

            
            	readsl(host->ctl + (addr << host->bus_shift), buf, count);

            
            }


            static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr,

            
            				   u16 val)

            
            {

            
            	/* If there is a hook and it returns non-zero then there

            
            	 * is an error and the write should be skipped

            
            	 */

            
            	if (host->write16_hook && host->write16_hook(host, addr))

            
            		return;

            
            	writew(val, host->ctl + (addr << host->bus_shift));

            
            }


            static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr,

            
            				       u16 *buf, int count)

            
            {

            
            	writesw(host->ctl + (addr << host->bus_shift), buf, count);

            
            }


            static inline void sd_ctrl_write32_as_16_and_16(struct tmio_mmc_host *host,

            
            						int addr, u32 val)

            
            {

            
            	writew(val & 0xffff, host->ctl + (addr << host->bus_shift));

            
            	writew(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));

            
            }


            static inline void sd_ctrl_write32_rep(struct tmio_mmc_host *host, int addr,

            
            				       const u32 *buf, int count)

            
            {

            
            	writesl(host->ctl + (addr << host->bus_shift), buf, count);

            
            }


            #endif
	/*
	* Driver for the MMC / SD / SDIO cell found in:
	*
	* TC6393XB TC6391XB TC6387XB T7L66XB ASIC3
	*
	* Copyright (C) 2015-17 Renesas Electronics Corporation
	* Copyright (C) 2016-17 Sang Engineering, Wolfram Sang
	* Copyright (C) 2016-17 Horms Solutions, Simon Horman
	* Copyright (C) 2007 Ian Molton
	* Copyright (C) 2004 Ian Molton
	*
	* 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.
	*
	*/

	#ifndef TMIO_MMC_H
	#define TMIO_MMC_H

	#include <linux/dmaengine.h>
	#include <linux/highmem.h>
	#include <linux/mutex.h>
	#include <linux/pagemap.h>
	#include <linux/scatterlist.h>
	#include <linux/spinlock.h>
	#include <linux/interrupt.h>

	#define CTL_SD_CMD 0x00
	#define CTL_ARG_REG 0x04
	#define CTL_STOP_INTERNAL_ACTION 0x08
	#define CTL_XFER_BLK_COUNT 0xa
	#define CTL_RESPONSE 0x0c
	/* driver merges STATUS and following STATUS2 */
	#define CTL_STATUS 0x1c
	/* driver merges IRQ_MASK and following IRQ_MASK2 */
	#define CTL_IRQ_MASK 0x20
	#define CTL_SD_CARD_CLK_CTL 0x24
	#define CTL_SD_XFER_LEN 0x26
	#define CTL_SD_MEM_CARD_OPT 0x28
	#define CTL_SD_ERROR_DETAIL_STATUS 0x2c
	#define CTL_SD_DATA_PORT 0x30
	#define CTL_TRANSACTION_CTL 0x34
	#define CTL_SDIO_STATUS 0x36
	#define CTL_SDIO_IRQ_MASK 0x38
	#define CTL_DMA_ENABLE 0xd8
	#define CTL_RESET_SD 0xe0
	#define CTL_VERSION 0xe2
	#define CTL_SDIO_REGS 0x100
	#define CTL_CLK_AND_WAIT_CTL 0x138
	#define CTL_RESET_SDIO 0x1e0

	/* Definitions for values the CTL_STOP_INTERNAL_ACTION register can take */
	#define TMIO_STOP_STP BIT(0)
	#define TMIO_STOP_SEC BIT(8)

	/* Definitions for values the CTL_STATUS register can take */
	#define TMIO_STAT_CMDRESPEND BIT(0)
	#define TMIO_STAT_DATAEND BIT(2)
	#define TMIO_STAT_CARD_REMOVE BIT(3)
	#define TMIO_STAT_CARD_INSERT BIT(4)
	#define TMIO_STAT_SIGSTATE BIT(5)
	#define TMIO_STAT_WRPROTECT BIT(7)
	#define TMIO_STAT_CARD_REMOVE_A BIT(8)
	#define TMIO_STAT_CARD_INSERT_A BIT(9)
	#define TMIO_STAT_SIGSTATE_A BIT(10)

	/* These belong technically to CTL_STATUS2, but the driver merges them */
	#define TMIO_STAT_CMD_IDX_ERR BIT(16)
	#define TMIO_STAT_CRCFAIL BIT(17)
	#define TMIO_STAT_STOPBIT_ERR BIT(18)
	#define TMIO_STAT_DATATIMEOUT BIT(19)
	#define TMIO_STAT_RXOVERFLOW BIT(20)
	#define TMIO_STAT_TXUNDERRUN BIT(21)
	#define TMIO_STAT_CMDTIMEOUT BIT(22)
	#define TMIO_STAT_DAT0 BIT(23) /* only known on R-Car so far */
	#define TMIO_STAT_RXRDY BIT(24)
	#define TMIO_STAT_TXRQ BIT(25)
	#define TMIO_STAT_ILL_FUNC BIT(29) /* only when !TMIO_MMC_HAS_IDLE_WAIT */
	#define TMIO_STAT_SCLKDIVEN BIT(29) /* only when TMIO_MMC_HAS_IDLE_WAIT */
	#define TMIO_STAT_CMD_BUSY BIT(30)
	#define TMIO_STAT_ILL_ACCESS BIT(31)

	/* Definitions for values the CTL_SD_CARD_CLK_CTL register can take */
	#define CLK_CTL_DIV_MASK 0xff
	#define CLK_CTL_SCLKEN BIT(8)

	/* Definitions for values the CTL_SD_MEM_CARD_OPT register can take */
	#define CARD_OPT_WIDTH8 BIT(13)
	#define CARD_OPT_WIDTH BIT(15)

	/* Definitions for values the CTL_SDIO_STATUS register can take */
	#define TMIO_SDIO_STAT_IOIRQ 0x0001
	#define TMIO_SDIO_STAT_EXPUB52 0x4000
	#define TMIO_SDIO_STAT_EXWT 0x8000
	#define TMIO_SDIO_MASK_ALL 0xc007

	#define TMIO_SDIO_SETBITS_MASK 0x0006

	/* Definitions for values the CTL_DMA_ENABLE register can take */
	#define DMA_ENABLE_DMASDRW BIT(1)

	/* Define some IRQ masks */
	/* This is the mask used at reset by the chip */
	#define TMIO_MASK_ALL 0x837f031d
	#define TMIO_MASK_READOP (TMIO_STAT_RXRDY \| TMIO_STAT_DATAEND)
	#define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ \| TMIO_STAT_DATAEND)
	#define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND \| TMIO_STAT_CMDTIMEOUT \| \
	TMIO_STAT_CARD_REMOVE \| TMIO_STAT_CARD_INSERT)
	#define TMIO_MASK_IRQ (TMIO_MASK_READOP \| TMIO_MASK_WRITEOP \| TMIO_MASK_CMD)

	struct tmio_mmc_data;
	struct tmio_mmc_host;

	struct tmio_mmc_dma {
	enum dma_slave_buswidth dma_buswidth;
	bool (filter)(struct dma_chan chan, void *arg);
	void (enable)(struct tmio_mmc_host host, bool enable);
	};

	struct tmio_mmc_dma_ops {
	void (start)(struct tmio_mmc_host host, struct mmc_data *data);
	void (enable)(struct tmio_mmc_host host, bool enable);
	void (request)(struct tmio_mmc_host host,
	struct tmio_mmc_data *pdata);
	void (release)(struct tmio_mmc_host host);
	void (abort)(struct tmio_mmc_host host);
	void (dataend)(struct tmio_mmc_host host);
	};

	struct tmio_mmc_host {
	void __iomem *ctl;
	struct mmc_command *cmd;
	struct mmc_request *mrq;
	struct mmc_data *data;
	struct mmc_host *mmc;

	/* Callbacks for clock / power control */
	void (set_pwr)(struct platform_device host, int state);
	void (set_clk_div)(struct platform_device host, int state);

	/* pio related stuff */
	struct scatterlist *sg_ptr;
	struct scatterlist *sg_orig;
	unsigned int sg_len;
	unsigned int sg_off;
	unsigned long bus_shift;

	struct platform_device *pdev;
	struct tmio_mmc_data *pdata;
	struct tmio_mmc_dma *dma;

	/* DMA support */
	bool force_pio;
	struct dma_chan *chan_rx;
	struct dma_chan *chan_tx;
	struct completion dma_dataend;
	struct tasklet_struct dma_complete;
	struct tasklet_struct dma_issue;
	struct scatterlist bounce_sg;
	u8 *bounce_buf;

	/* Track lost interrupts */
	struct delayed_work delayed_reset_work;
	struct work_struct done;

	/* Cache */
	u32 sdcard_irq_mask;
	u32 sdio_irq_mask;
	unsigned int clk_cache;

	spinlock_t lock; /* protect host private data */
	unsigned long last_req_ts;
	struct mutex ios_lock; /* protect set_ios() context */
	bool native_hotplug;
	bool sdio_irq_enabled;
	u32 scc_tappos;

	/* Mandatory callback */
	int (clk_enable)(struct tmio_mmc_host host);

	/* Optional callbacks */
	unsigned int (clk_update)(struct tmio_mmc_host host,
	unsigned int new_clock);
	void (clk_disable)(struct tmio_mmc_host host);
	int (multi_io_quirk)(struct mmc_card card,
	unsigned int direction, int blk_size);
	int (card_busy)(struct mmc_host mmc);
	int (start_signal_voltage_switch)(struct mmc_host mmc,
	struct mmc_ios *ios);
	int (write16_hook)(struct tmio_mmc_host host, int addr);
	void (hw_reset)(struct tmio_mmc_host host);
	void (prepare_tuning)(struct tmio_mmc_host host, unsigned long tap);
	bool (check_scc_error)(struct tmio_mmc_host host);

	/*
	* Mandatory callback for tuning to occur which is optional for SDR50
	* and mandatory for SDR104.
	*/
	unsigned int (init_tuning)(struct tmio_mmc_host host);
	int (select_tuning)(struct tmio_mmc_host host);

	/* Tuning values: 1 for success, 0 for failure */
	DECLARE_BITMAP(taps, BITS_PER_BYTE * sizeof(long));
	unsigned int tap_num;

	const struct tmio_mmc_dma_ops *dma_ops;
	};

	struct tmio_mmc_host tmio_mmc_host_alloc(struct platform_device pdev);
	void tmio_mmc_host_free(struct tmio_mmc_host *host);
	int tmio_mmc_host_probe(struct tmio_mmc_host *host,
	struct tmio_mmc_data *pdata,
	const struct tmio_mmc_dma_ops *dma_ops);
	void tmio_mmc_host_remove(struct tmio_mmc_host *host);
	void tmio_mmc_do_data_irq(struct tmio_mmc_host *host);

	void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
	void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
	irqreturn_t tmio_mmc_irq(int irq, void *devid);

	static inline char tmio_mmc_kmap_atomic(struct scatterlist sg,
	unsigned long *flags)
	{
	local_irq_save(*flags);
	return kmap_atomic(sg_page(sg)) + sg->offset;
	}

	static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg,
	unsigned long flags, void virt)
	{
	kunmap_atomic(virt - sg->offset);
	local_irq_restore(*flags);
	}

	#ifdef CONFIG_PM
	int tmio_mmc_host_runtime_suspend(struct device *dev);
	int tmio_mmc_host_runtime_resume(struct device *dev);
	#endif

	static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr)
	{
	return readw(host->ctl + (addr << host->bus_shift));
	}

	static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr,
	u16 *buf, int count)
	{
	readsw(host->ctl + (addr << host->bus_shift), buf, count);
	}

	static inline u32 sd_ctrl_read16_and_16_as_32(struct tmio_mmc_host *host,
	int addr)
	{
	return readw(host->ctl + (addr << host->bus_shift)) \|
	readw(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
	}

	static inline void sd_ctrl_read32_rep(struct tmio_mmc_host *host, int addr,
	u32 *buf, int count)
	{
	readsl(host->ctl + (addr << host->bus_shift), buf, count);
	}

	static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr,
	u16 val)
	{
	/* If there is a hook and it returns non-zero then there
	* is an error and the write should be skipped
	*/
	if (host->write16_hook && host->write16_hook(host, addr))
	return;
	writew(val, host->ctl + (addr << host->bus_shift));
	}

	static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr,
	u16 *buf, int count)
	{
	writesw(host->ctl + (addr << host->bus_shift), buf, count);
	}

	static inline void sd_ctrl_write32_as_16_and_16(struct tmio_mmc_host *host,
	int addr, u32 val)
	{
	writew(val & 0xffff, host->ctl + (addr << host->bus_shift));
	writew(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));
	}

	static inline void sd_ctrl_write32_rep(struct tmio_mmc_host *host, int addr,
	const u32 *buf, int count)
	{
	writesl(host->ctl + (addr << host->bus_shift), buf, count);
	}

	#endif