blob: ec5424e798bdf09210d19d5e384c982671b37088 (
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
|
/*
* This file is part of the coreboot project.
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <device/device.h>
#include <device/pci_def.h>
#include <drivers/i2c/designware/dw_i2c.h>
#include <soc/pci_devs.h>
/* Convert I2C bus number to PCI device and function */
int dw_i2c_soc_bus_to_devfn(unsigned int bus)
{
if (bus <= 3)
return PCI_DEVFN(PCH_DEV_SLOT_SIO1, bus);
else if (bus >= 4 && bus <= 7)
return PCI_DEVFN(PCH_DEV_SLOT_SIO2, (bus - 4));
else
return -1;
}
/* Convert PCI device and function to I2C bus number */
int dw_i2c_soc_devfn_to_bus(unsigned int devfn)
{
if (PCI_SLOT(devfn) == PCH_DEV_SLOT_SIO1)
return PCI_FUNC(devfn);
else if (PCI_SLOT(devfn) == PCH_DEV_SLOT_SIO2)
return PCI_FUNC(devfn) + 4;
else
return -1;
}
|
