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/*
* 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/mmc/mmc.h>
struct mmc_ios {
unsigned int clock; /* clock rate */
unsigned short vdd;
#define MMC_VDD_150 0
#define MMC_VDD_155 1
#define MMC_VDD_160 2
#define MMC_VDD_165 3
#define MMC_VDD_170 4
#define MMC_VDD_180 5
#define MMC_VDD_190 6
#define MMC_VDD_200 7
#define MMC_VDD_210 8
#define MMC_VDD_220 9
#define MMC_VDD_230 10
#define MMC_VDD_240 11
#define MMC_VDD_250 12
#define MMC_VDD_260 13
#define MMC_VDD_270 14
#define MMC_VDD_280 15
#define MMC_VDD_290 16
#define MMC_VDD_300 17
#define MMC_VDD_310 18
#define MMC_VDD_320 19
#define MMC_VDD_330 20
#define MMC_VDD_340 21
#define MMC_VDD_350 22
#define MMC_VDD_360 23
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
unsigned char timing; /* timing specification used */
#define MMC_TIMING_LEGACY 0
#define MMC_TIMING_MMC_HS 1
#define MMC_TIMING_SD_HS 2
};
struct mmc_host_ops {
void (*request)(struct mmc_host *host, struct mmc_request *req);
void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
int (*get_ro)(struct mmc_host *host);
};
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;
u32 ocr_avail;
unsigned long caps; /* Host capabilities */
#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
#define MMC_CAP_MULTIWRITE (1 << 1) /* Can accurately report bytes sent to card on error */
#define MMC_CAP_BYTEBLOCK (1 << 2) /* Can do non-log2 block sizes */
#define MMC_CAP_MMC_HIGHSPEED (1 << 3) /* Can do MMC high-speed timing */
#define MMC_CAP_SD_HIGHSPEED (1 << 4) /* Can do SD high-speed timing */
/* host specific block data */
unsigned int max_seg_size; /* see blk_queue_max_segment_size */
unsigned short max_hw_segs; /* see blk_queue_max_hw_segments */
unsigned short max_phys_segs; /* see blk_queue_max_phys_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 */
struct mmc_ios ios; /* current io bus settings */
u32 ocr; /* the current OCR setting */
unsigned int mode; /* current card mode of host */
#define MMC_MODE_MMC 0
#define MMC_MODE_SD 1
struct list_head cards; /* devices attached to this host */
wait_queue_head_t wq;
spinlock_t lock; /* claimed lock */
unsigned int claimed:1; /* host exclusively claimed */
struct mmc_card *card_selected; /* the selected MMC card */
struct delayed_work detect;
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_dev(x) ((x)->parent)
#define mmc_classdev(x) (&(x)->class_dev)
#define mmc_hostname(x) ((x)->class_dev.bus_id)
extern int mmc_suspend_host(struct mmc_host *, pm_message_t);
extern int mmc_resume_host(struct mmc_host *);
extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
extern void mmc_request_done(struct mmc_host *, struct mmc_request *);
#endif
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