gadget-securevault/sdcard.h

#ifndef SDCARD_INCLUDED
#define SDCARD_INCLUDED
#define SDIO_HAS_CARD_DETECT

enum SDIO_CLOCK_DIV {
    SDIO_24MHZ = 0,
    SDIO_16MHZ,
    SDIO_12MHZ,
    SDIO_8MHZ,
    SDIO_4MHZ,
    SDIO_1MHZ,
    SDIO_400KHZ
};

enum SDIO_POWER_STATE {
    SDIO_POWER_ON,
    SDIO_POWER_OFF
};

#define SDIO_CARD_CCS(c)     (((c)->ocr & 0x40000000) != 0)
#define SDIO_CARD_UHS2(c)   (((c)->ocr & 0x40000000) != 0)
#define SDIO_CARD_LVOK(c)   (((c)->ocr & 0x01000000) != 0)

typedef struct SDIO_CARD_DATA {
    uint32_t    props;
    uint32_t    ocr;
    uint32_t    cid[4];
    uint32_t    csd[4];
    uint32_t    scr[2];
    uint32_t    status[16];
    uint32_t    size;
    uint16_t    rca;
} * SDIO_CARD;

struct dev_sd {
    struct device *dev;
    uint32_t base;
    uint32_t *rcc_rst_reg;
    uint32_t rcc_rst;
    SDIO_CARD card;
};

/* API for sd_bus clock setting */
enum SD_CLOCK_DIV {
    CLOCK_24MHZ = 0,
    CLOCK_16MHZ,
    CLOCK_12MHZ,
    CLOCK_8MHZ,
    CLOCK_4MHZ,
    CLOCK_1MHZ,
    CLOCK_400KHZ
};

//int stm32_sd_bus(int bits, enum SD_CLOCK_DIV freq);

void *sdcard_open(void);
int sdcard_read(void *dev, void *_buf, uint32_t lba);
int sdcard_write(void *dev, void *_buf, uint32_t lba);
int sdcard_sense(void);
int sdcard_detect(void);
uint32_t sdcard_getsize(void *dev);
void sdcard_hw_init(void);


#endif