137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/*
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* linux/include/linux/mmc/host.h
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Host driver specific definitions.
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*/
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#ifndef LINUX_MMC_HOST_H
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#define LINUX_MMC_HOST_H
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#include <linux/mmc/mmc.h>
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struct mmc_ios {
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unsigned int clock; /* clock rate */
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unsigned short vdd;
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#define MMC_VDD_150 0
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#define MMC_VDD_155 1
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#define MMC_VDD_160 2
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#define MMC_VDD_165 3
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#define MMC_VDD_170 4
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#define MMC_VDD_180 5
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#define MMC_VDD_190 6
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#define MMC_VDD_200 7
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#define MMC_VDD_210 8
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#define MMC_VDD_220 9
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#define MMC_VDD_230 10
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#define MMC_VDD_240 11
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#define MMC_VDD_250 12
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#define MMC_VDD_260 13
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#define MMC_VDD_270 14
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#define MMC_VDD_280 15
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#define MMC_VDD_290 16
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#define MMC_VDD_300 17
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#define MMC_VDD_310 18
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#define MMC_VDD_320 19
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#define MMC_VDD_330 20
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#define MMC_VDD_340 21
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#define MMC_VDD_350 22
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#define MMC_VDD_360 23
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unsigned char bus_mode; /* command output mode */
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#define MMC_BUSMODE_OPENDRAIN 1
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#define MMC_BUSMODE_PUSHPULL 2
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unsigned char chip_select; /* SPI chip select */
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#define MMC_CS_DONTCARE 0
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#define MMC_CS_HIGH 1
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#define MMC_CS_LOW 2
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unsigned char power_mode; /* power supply mode */
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#define MMC_POWER_OFF 0
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#define MMC_POWER_UP 1
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#define MMC_POWER_ON 2
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unsigned char bus_width; /* data bus width */
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#define MMC_BUS_WIDTH_1 0
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#define MMC_BUS_WIDTH_4 2
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};
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struct mmc_host_ops {
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void (*request)(struct mmc_host *host, struct mmc_request *req);
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void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
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int (*get_ro)(struct mmc_host *host);
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};
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struct mmc_card;
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struct device;
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struct mmc_host {
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struct device *dev;
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struct class_device class_dev;
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int index;
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struct mmc_host_ops *ops;
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unsigned int f_min;
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unsigned int f_max;
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u32 ocr_avail;
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unsigned long caps; /* Host capabilities */
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#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
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/* host specific block data */
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unsigned int max_seg_size; /* see blk_queue_max_segment_size */
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unsigned short max_hw_segs; /* see blk_queue_max_hw_segments */
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unsigned short max_phys_segs; /* see blk_queue_max_phys_segments */
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unsigned short max_sectors; /* see blk_queue_max_sectors */
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unsigned short unused;
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/* private data */
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struct mmc_ios ios; /* current io bus settings */
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u32 ocr; /* the current OCR setting */
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unsigned int mode; /* current card mode of host */
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#define MMC_MODE_MMC 0
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#define MMC_MODE_SD 1
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struct list_head cards; /* devices attached to this host */
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wait_queue_head_t wq;
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spinlock_t lock; /* card_busy lock */
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struct mmc_card *card_busy; /* the MMC card claiming host */
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struct mmc_card *card_selected; /* the selected MMC card */
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struct work_struct detect;
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unsigned long private[0] ____cacheline_aligned;
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};
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extern struct mmc_host *mmc_alloc_host(int extra, struct device *);
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extern int mmc_add_host(struct mmc_host *);
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extern void mmc_remove_host(struct mmc_host *);
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extern void mmc_free_host(struct mmc_host *);
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static inline void *mmc_priv(struct mmc_host *host)
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{
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return (void *)host->private;
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}
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#define mmc_dev(x) ((x)->dev)
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#define mmc_hostname(x) ((x)->class_dev.class_id)
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extern int mmc_suspend_host(struct mmc_host *, pm_message_t);
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extern int mmc_resume_host(struct mmc_host *);
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extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
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extern void mmc_request_done(struct mmc_host *, struct mmc_request *);
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#endif
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