marvell/uboot/drivers/video/asrfb/spi_drv.h

#ifndef _SPI_DRV_H_
#define _SPI_DRV_H_

struct s_lcd_cmd_des;

enum {
    SPI_EDGE_RISING     = 0,
    SPI_EDGE_FALLING    = 1,
    SPI_EDGE_LIMIT
};

enum {
    SPI_ENDIAN_LSB  = 0,
    SPI_ENDIAN_MSB  = 1,
    SPI_ENDIAN_LIMIT
};

enum {
    SPI_PATH_IMAGE      = 0,
    SPI_PATH_REGISTER   = 1,
    SPI_PATH_LIMIT
};

enum {
    SPI_FORMAT_RGB565       = 0,
    SPI_FORMAT_RGB666       = 1,
    SPI_FORMAT_RGB666_2_3   = 2,
    SPI_FORMAT_RGB888       = 3,
    SPI_FORMAT_RGB888_2_3   = 4,
    SPI_FORMAT_LIMIT
};

enum {
    SPI_STATUS_UNINIT   = 0,
    SPI_STATUS_INIT     = 1,
    SPI_STATUS_LIMIT
};

struct timing_spi {
    unsigned int wclk;  /*KHz*/
    unsigned int rclk;  /*KHz*/
};

struct spi_info {
    unsigned short line_num;        /*3 or 4*/
    unsigned short interface_id;    /*1 or 2*/
    unsigned short data_lane_num;   /*1 or 2*/
    unsigned short format;
    unsigned short device_id;       /*0 or 1*/
    unsigned short sample_edge;
    unsigned short force_cs;        /*0-disable, 1-enable*/
    unsigned short endian;
    unsigned short reserved;
    struct timing_spi *timing;
};

struct s_spi_ctx {
    unsigned int base_addr;
    unsigned int sclk; /*KHz*/
    unsigned short cur_path;
    unsigned short cur_cs;
    unsigned short status;
    unsigned short reserved;
    struct spi_info info;
};

struct s_spi_ctx *spi_init(unsigned int sclk, struct spi_info *info);
int spi_set_cs(struct s_spi_ctx *spi_ctx, unsigned int enable);
int spi_write_cmd(struct s_spi_ctx *spi_ctx, unsigned int cmd, unsigned int bits);
int spi_write_data(struct s_spi_ctx *spi_ctx, unsigned int data, unsigned int bits);
int spi_read_data(struct s_spi_ctx *spi_ctx, unsigned int cmd, unsigned int cmd_bits,
                  unsigned int *data,  unsigned int data_bits);
int spi_write_array(struct s_spi_ctx *spi_ctx, struct s_lcd_cmd_des *cmds, int cmd_len, int fast_mode);
int spi_before_refresh(struct s_spi_ctx *spi_ctx);
int spi_after_refresh(struct s_spi_ctx *spi_ctx);
void spi_uninit(struct s_spi_ctx *mcu_ctx);

#endif /*_SPI_DRV_H_*/