src/southbridge/intel/i82801ix/smbus.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/device.h>
   4 #include <device/smbus.h>
   5 #include <device/pci.h>
   6 #include <device/pci_ids.h>
   7 #include <device/pci_ops.h>
   8 #include <device/smbus_host.h>
   9 #include <southbridge/intel/common/smbus_ops.h>
  10 #include "i82801ix.h"
  11
  12 static void pch_smbus_init(struct device *dev)
  13 {
  14         /* Enable clock gating */
  15         pci_and_config16(dev, 0x80, ~((1 << 8) | (1 << 10) | (1 << 12) | (1 << 14)));
  16 }
  17
  18 static struct device_operations smbus_ops = {
  19         .read_resources         = smbus_read_resources,
  20         .set_resources          = pci_dev_set_resources,
  21         .enable_resources       = pci_dev_enable_resources,
  22         .scan_bus               = scan_smbus,
  23         .init                   = pch_smbus_init,
  24         .ops_smbus_bus          = &lops_smbus_bus,
  25         .ops_pci                = &pci_dev_ops_pci,
  26 };
  27
  28 static const struct pci_driver pch_smbus __pci_driver = {
  29         .ops     = &smbus_ops,
  30         .vendor  = PCI_VID_INTEL,
  31         .device = PCI_DID_INTEL_82801IB_SMB,
  32 };