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Diffstat (limited to 'src/southbridge/intel/esb6300/smbus.c')
-rw-r--r--src/southbridge/intel/esb6300/smbus.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/src/southbridge/intel/esb6300/smbus.c b/src/southbridge/intel/esb6300/smbus.c
new file mode 100644
index 0000000000..c7ed04f136
--- /dev/null
+++ b/src/southbridge/intel/esb6300/smbus.c
@@ -0,0 +1,49 @@
+#include <device/device.h>
+#include <device/path.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <device/smbus.h>
+#include <arch/io.h>
+#include "esb6300.h"
+#include "smbus.h"
+
+static int lsmbus_read_byte(device_t dev, u8 address)
+{
+ u16 device;
+ struct resource *res;
+ struct bus *pbus;
+
+ device = dev->path.i2c.device;
+ pbus = get_pbus_smbus(dev);
+ res = find_resource(pbus->dev, 0x20);
+
+ return do_smbus_read_byte(res->base, device, address);
+}
+
+static struct smbus_bus_operations lops_smbus_bus = {
+ .read_byte = lsmbus_read_byte,
+};
+
+static struct pci_operations lops_pci = {
+ /* The subsystem id follows the ide controller */
+ .set_subsystem = 0,
+};
+
+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 = esb6300_enable,
+ .ops_pci = &lops_pci,
+ .ops_smbus_bus = &lops_smbus_bus,
+};
+
+static const struct pci_driver smbus_driver __pci_driver = {
+ .ops = &smbus_ops,
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .device = PCI_DEVICE_ID_INTEL_6300ESB_SMB,
+};
+