omap24xx_mmc.h

来自「Linux Kernel 2.6.9 for OMAP1710」· C头文件 代码 · 共 120 行

#ifndef	DRIVERS_MEDIA_MMC_OMAP_H
#define	DRIVERS_MEDIA_MMC_OMAP_H

#define DRIVER_NAME    "omap-mmc"


#define MMC_REG_BASE   0xf809C000

#define PRCM_CLK_EN_PLL      0x500
#define PRCM_CLK_SEL1_PLL    0x540
#define PRCM_FCLK_EN1_CORE   0x200
#define PRCM_FCLK_EN2_CORE   0x204

#define OMAP_MMC_REG_CMD        0x00
#define OMAP_MMC_REG_ARGL       0x04
#define OMAP_MMC_REG_ARGH       0x08
#define OMAP_MMC_REG_CON        0x0c
#define OMAP_MMC_REG_STAT       0x10
#define OMAP_MMC_REG_IE         0x14
#define OMAP_MMC_REG_CTO        0x18
#define OMAP_MMC_REG_DTO        0x1c
#define OMAP_MMC_REG_DATA       0x20
#define OMAP_MMC_REG_BLEN       0x24
#define OMAP_MMC_REG_NBLK       0x28
#define OMAP_MMC_REG_BUF        0x2c
#define OMAP_MMC_REG_REV        0x3c
#define OMAP_MMC_REG_RSP0       0x40
#define OMAP_MMC_REG_RSP1       0x44
#define OMAP_MMC_REG_RSP2       0x48
#define OMAP_MMC_REG_RSP3       0x4c
#define OMAP_MMC_REG_RSP4       0x50
#define OMAP_MMC_REG_RSP5       0x54
#define OMAP_MMC_REG_RSP6       0x58
#define OMAP_MMC_REG_RSP7       0x5c

#define OMAP_MMC_STAT_CARD_ERR          (1 << 14)
#define OMAP_MMC_STAT_CARD_IRQ          (1 << 13)
#define OMAP_MMC_STAT_OCR_BUSY          (1 << 12)
#define OMAP_MMC_STAT_A_EMPTY           (1 << 11)
#define OMAP_MMC_STAT_A_FULL            (1 << 10)
#define OMAP_MMC_STAT_CMD_CRC           (1 <<  8)
#define OMAP_MMC_STAT_CMD_TOUT          (1 <<  7)
#define OMAP_MMC_STAT_DATA_CRC          (1 <<  6)
#define OMAP_MMC_STAT_DATA_TOUT         (1 <<  5)
#define OMAP_MMC_STAT_END_BUSY          (1 <<  4)
#define OMAP_MMC_STAT_END_OF_DATA       (1 <<  3)
#define OMAP_MMC_STAT_CARD_BUSY         (1 <<  2)
#define OMAP_MMC_STAT_END_OF_CMD        (1 <<  0)

/*
 * Command types
 */
#define OMAP_MMC_CMDTYPE_BC     0
#define OMAP_MMC_CMDTYPE_BCR    1
#define OMAP_MMC_CMDTYPE_AC     2
#define OMAP_MMC_CMDTYPE_ADTC   3


#define OMAP_MMC_BASE   0x4809C000

#define OMAP_USE_DMA               1
#define OMAP_MMC_IRQ              83
#define MMC_REF_CLOCK       96000000
#define MMC_FMAX            24000000
#define MMC_FMIN              400000
#define MMC_DMA_TX_REQUEST        60
#define MMC_DMA_RX_REQUEST        61
#define MMC_REG_SIZE      0x00001000
#define MMC_HP_IRQ                96

static void omap24xx_mmc_request(struct mmc_host *mmc, struct mmc_request *req);
static void omap24xx_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);


struct mmc_omap_host {
 	struct device 				dev;
	int					initialized;
	struct mmc_host				*mmc;
	struct mmc_request *			mrq;
	struct mmc_command *			cmd;
	struct mmc_data *			data;
	unsigned char				id; 		
	u32					base;
	int 					irq;
	unsigned char				bus_mode;
#define OMAP_MMC_DATADIR_NONE	0
#define OMAP_MMC_DATADIR_READ	1
#define OMAP_MMC_DATADIR_WRITE	2
	unsigned char				datadir;
	u16 * 					buffer;
	u32 					bytesleft;
	int					power_pin;
	int					use_dma, dma_ch;
	struct completion			dma_completion;
};

static struct mmc_host_ops mmc_omap_ops = {
	.request	= omap24xx_mmc_request,
	.set_ios	= omap24xx_mmc_set_ios,
};


/* Macro to write/ read to the MMC controller */
#define OMAP_MMC_READ(base, reg)	\
	(*((volatile unsigned short *)((base)+OMAP_MMC_REG_##reg)))
#define OMAP_MMC_WRITE(base, reg, val)	\
	(*((volatile unsigned short *)((base)+OMAP_MMC_REG_##reg)) = (val))


#define omap_prcmreg_read(reg) readl(OMAP24XX_VA_PRCM_BASE + reg)
#define omap_prcmreg_write(data,reg) writel(data, OMAP24XX_VA_PRCM_BASE + reg)

/*
 * General
 */
#define mmc_host_to_mmc_omap_host(mmcptr)	container_of(mmc, struct mmc_omap_host, mmcptr)


#endif