aboutsummaryrefslogtreecommitdiff
path: root/src/soc/amd/common/block/spi/fch_spi_util.c
blob: 7bac99191af4ef0935d6f5f724473694ce3a4ecf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
/* 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>

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 read8((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);
}