max80_fw/fw/abcdma.c

#include "fw.h"
#include "io.h"

void setup_abc_dma(void *buf, unsigned int len, uint8_t devsel,
		  bool dir_in, unsigned long status)
{
    devsel &= 63;

    volatile uint32_t *portctl    = &ABCMEM_WRPORT(devsel)  + dir_in;
    volatile uint32_t *portcount  = &ABCMEM_WRCOUNT(devsel) + dir_in;
    volatile uint32_t *portstatus = &ABCMEMMAP_STATUS(devsel);

    *portctl = ((size_t)buf & 0x01ffffff) | (ABCMEMMAP_WR << dir_in);
    *portcount = len;
    *portstatus = status;
}