| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/pci_ops.h> |
| #include <device/pci_def.h> |
| #include <device/smbus_host.h> |
| #include "i82801dx.h" |
| |
| void i82801dx_early_init(void) |
| { |
| enable_smbus(); |
| } |
| |
| uintptr_t smbus_base(void) |
| { |
| return SMBUS_IO_BASE; |
| } |
| |
| int smbus_enable_iobar(uintptr_t base) |
| { |
| pci_devfn_t dev = PCI_DEV(0x0, 0x1f, 0x3); |
| |
| /* set smbus iobase */ |
| pci_write_config32(dev, 0x20, base | 1); |
| /* Set smbus enable */ |
| pci_write_config8(dev, 0x40, 0x01); |
| /* Set smbus iospace enable */ |
| pci_write_config16(dev, 0x4, 0x01); |
| |
| return 0; |
| } |