gspi_io.h

linux 基于mips 架构cpu 的红外驱动

#ifndef _GSPI_IO_H
#define _GSPI_IO_H

#include <asm/dma.h>

#include "os_defs.h"

#define GSPI_OK	0

typedef struct s3c24xx_spi gspihost_info;
typedef gspihost_info gspihost_info_t;
typedef gspihost_info_t *gspihost_info_p;
typedef struct gspi_card_rec *gspi_card_rec_p;
typedef struct gspi_card_rec io_card_rec_t;
typedef io_card_rec_t *io_card_rec_p;
typedef struct gspi_notifier_rec gspi_notifier_rec_t;
typedef gspi_notifier_rec_t *gspi_notifier_rec_p;
typedef int (*gspi_notifier_fn_p) (gspi_card_rec_p);

struct s3c24xx_spi
{
 	//direct access hardware
	void __iomem		*regs;
	struct clk		*clk;
	struct resource		*ioarea;
	struct device 		*dev;
	//struct s3c2410_spi_info	*pdata;
	
	//dma request
	int			dma_chan;
	//enum s3c2410_dmasrc	dma_src;
	unsigned char		*dma_map;
	//dma_addr_t		dma_addr;
	int			dma_size;
	//struct completion	dma_done;
	
	struct platform_device *pdev;
	int			irq;
	
	spinlock_t		lock;

	gspi_card_rec_p		card;
};

struct gspi_card_rec
{
	u8 magic[4];
	gspihost_info_p ctrlr;      // Back Reference to Host Controller
	int (*add) (gspi_card_rec_p card);
	int (*remove) (gspi_card_rec_p card);
	IRQ_RET_TYPE(*user_isr) (int, void *);
	void *user_arg;
	u16 chiprev;
};

struct gspi_notifier_rec
{
	int (*add) (gspi_card_rec_p card);
	int (*remove) (gspi_card_rec_p card);
	IRQ_RET_TYPE(*user_isr) (int, void *);
};

int gspi_read_data_direct(gspi_card_rec_p cardp, u8 * data, u16 reg, u16 size);
int gspi_write_data_direct(gspi_card_rec_p cardp, u8 * data, u16 reg, u16 size);
int gspi_read_reg(gspi_card_rec_p cardp, u16 reg, u16 * data);
int gspi_write_reg(gspi_card_rec_p cardp, u16 reg, u16 data);
int gspi_register_irq(gspihost_info_p);
void gspi_unregister_irq(gspihost_info_p);
gspi_notifier_rec_p register_user(gspi_notifier_rec_p notifierp);
void unregister_user(gspi_notifier_rec_p notifierp);
void gspi_reset(void);

#endif /* _GSPI_IO_H */