fch_spi_util.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <amdblocks/lpc.h>
#include <amdblocks/spi.h>
#include <arch/mmio.h>
#include <assert.h>
#include <stdint.h>
 
/* Global SPI controller mutex */
struct thread_mutex spi_hw_mutex;
 
static uintptr_t spi_base;
 
void spi_set_base(void *base)
{
        spi_base = (uintptr_t)base;
}
 
uintptr_t spi_get_bar(void)
{
        if (ENV_X86 && !spi_base)
                spi_set_base((void *)lpc_get_spibase());
        ASSERT(spi_base);
 
        return spi_base;
}
 
uint8_t spi_read8(uint8_t reg)
{
        return read8((void *)(spi_get_bar() + reg));
}
 
uint16_t spi_read16(uint8_t reg)
{
        return read16((void *)(spi_get_bar() + reg));
}
 
uint32_t spi_read32(uint8_t reg)
{
        return read32((void *)(spi_get_bar() + reg));
}
 
void spi_write8(uint8_t reg, uint8_t val)
{
        write8((void *)(spi_get_bar() + reg), val);
}
 
void spi_write16(uint8_t reg, uint16_t val)
{
        write16((void *)(spi_get_bar() + reg), val);
}
 
void spi_write32(uint8_t reg, uint32_t val)
{
        write32((void *)(spi_get_bar() + reg), val);
}