src/southbridge/intel/bd82x6x/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 "pch.h"
  11
  12 static void pch_smbus_init(struct device *dev)
  13 {
  14         struct resource *res;
  15
  16         /* Enable clock gating */
  17         pci_and_config16(dev, 0x80, ~((1 << 8) | (1 << 10) | (1 << 12) | (1 << 14)));
  18
  19         /* Set Receive Slave Address */
  20         res = probe_resource(dev, PCI_BASE_ADDRESS_4);
  21         if (res)
  22                 smbus_set_slave_addr(res->base, SMBUS_SLAVE_ADDR);
  23 }
  24
  25 static const char *smbus_acpi_name(const struct device *dev)
  26 {
  27         return "SBUS";
  28 }
  29
  30 struct device_operations bd82x6x_smbus_ops = {
  31         .read_resources         = smbus_read_resources,
  32         .set_resources          = pci_dev_set_resources,
  33         .enable_resources       = pci_dev_enable_resources,
  34         .scan_bus               = scan_smbus,
  35         .init                   = pch_smbus_init,
  36         .ops_smbus_bus          = &lops_smbus_bus,
  37         .ops_pci                = &pci_dev_ops_pci,
  38         .acpi_name              = smbus_acpi_name,
  39 };