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
|
/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <stdint.h>
#include <console/console.h>
#include <device/device.h>
#include <device/smbus.h>
struct bus *get_pbus_smbus(struct device *dev)
{
struct bus *const pbus = i2c_link(dev);
if (!pbus->dev->ops->ops_smbus_bus) {
printk(BIOS_ALERT, "%s Cannot find SMBus bus operations",
dev_path(dev));
die("");
}
return pbus;
}
#define CHECK_PRESENCE(x) \
if (!ops_smbus_bus(get_pbus_smbus(dev))->x) { \
printk(BIOS_ERR, "%s missing " #x "\n", \
dev_path(dev)); \
return -1; \
}
int smbus_block_read(struct device *dev, u8 cmd, u8 bytes, u8 *buffer)
{
CHECK_PRESENCE(block_read);
return ops_smbus_bus(get_pbus_smbus(dev))->block_read(dev, cmd,
bytes, buffer);
}
int smbus_block_write(struct device *dev, u8 cmd, u8 bytes, const u8 *buffer)
{
CHECK_PRESENCE(block_write);
return ops_smbus_bus(get_pbus_smbus(dev))->block_write(dev, cmd,
bytes, buffer);
}
|
