src/southbridge/intel/esb6300/esb6300_smbus.c

   1 #include <device/device.h>
   2 #include <device/path.h>
   3 #include <device/pci.h>
   4 #include <device/pci_ids.h>
   5 #include <device/pci_ops.h>
   6 #include <device/smbus.h>
   7 #include <arch/io.h>
   8 #include "esb6300.h"
   9 #include "esb6300_smbus.h"
  10
  11 static int lsmbus_read_byte(struct bus *bus, device_t dev, uint8_t address)
  12 {
  13         unsigned device;
  14         struct resource *res;
  15
  16         device = dev->path.u.i2c.device;
  17         res = find_resource(bus->dev, 0x20);
  18
  19         return do_smbus_read_byte(res->base, device, address);
  20 }
  21
  22 static struct smbus_bus_operations lops_smbus_bus = {
  23         .read_byte  = lsmbus_read_byte,
  24 };
  25 static struct pci_operations lops_pci = {
  26         /* The subsystem id follows the ide controller */
  27         .set_subsystem = 0,
  28 };
  29 static struct device_operations smbus_ops = {
  30         .read_resources   = pci_dev_read_resources,
  31         .set_resources    = pci_dev_set_resources,
  32         .enable_resources = pci_dev_enable_resources,
  33         .init             = 0,
  34         .scan_bus         = scan_static_bus,
  35         .enable           = esb6300_enable,
  36         .ops_pci          = &lops_pci,
  37         .ops_smbus_bus    = &lops_smbus_bus,
  38 };
  39
  40 static const struct pci_driver smbus_driver __pci_driver = {
  41         .ops    = &smbus_ops,
  42         .vendor = PCI_VENDOR_ID_INTEL,
  43         .device = PCI_DEVICE_ID_INTEL_6300ESB_SMB,
  44 };
  45