diff options
Diffstat (limited to 'src/southbridge/intel/i82801gx/i82801gx_smbus.c')
-rw-r--r-- | src/southbridge/intel/i82801gx/i82801gx_smbus.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/southbridge/intel/i82801gx/i82801gx_smbus.c b/src/southbridge/intel/i82801gx/i82801gx_smbus.c new file mode 100644 index 0000000000..1f609f0c29 --- /dev/null +++ b/src/southbridge/intel/i82801gx/i82801gx_smbus.c @@ -0,0 +1,59 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 coresystems GmbH + * + * 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; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdint.h> +#include <smbus.h> +#include <pci.h> +#include <arch/io.h> +#include "i82801gx.h" +#include "i82801_smbus.h" + +static int smbus_read_byte(struct bus *bus, device_t dev, u8 address) +{ + u16 device; + struct resource *res; + + device = dev->path.u.i2c.device; + res = find_resource(bus->dev, 0x20); + + return do_smbus_read_byte(res->base, device, address); +} + +static struct smbus_bus_operations lops_smbus_bus = { + .read_byte = smbus_read_byte, +}; + +static struct device_operations smbus_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = 0, + .scan_bus = scan_static_bus, + .enable = i82801gx_enable, + .ops_smbus_bus = &lops_smbus_bus, +}; + +/* 82801GB/GR/GDH/GBM/GHM/GU (ICH7/ICH7R/ICH7DH/ICH7-M/ICH7-M DH/ICH7-U) */ +static const struct pci_driver i82801gx_smbus __pci_driver = { + .ops = &smbus_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_82801GB_SMB, +}; + |