- /*
- * 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
- };
- 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 *dev;
- struct class_device class_dev;
- int index;
- 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 */
- /* 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 max_sectors; /* see blk_queue_max_sectors */
- unsigned short unused;
- /* 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; /* card_busy lock */
- struct mmc_card *card_busy; /* the MMC card claiming host */
- struct mmc_card *card_selected; /* the selected MMC card */
- struct work_struct 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)->dev)
- #define mmc_hostname(x) ((x)->class_dev.class_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