sb/intel/x/smbus.c: Factor out common code

Since common smbus.c gets built for romstage as well, create a new file
to hold this common code. Account for ICH7 not having a memory BAR, too.

Change-Id: I4ab46750c6fb7f71cbd55848e79ecc3e44cbbd04
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48364
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 1 insertions, 66 deletions

diff --git a/src/southbridge/intel/i82801gx/smbus.c b/src/southbridge/intel/i82801gx/smbus.c
index 5915f3d15b..739e552b1d 100644
--- a/src/southbridge/intel/i82801gx/smbus.c
+++ b/src/southbridge/intel/i82801gx/smbus.c
@@ -7,74 +7,9 @@
 #include <device/pci_def.h>
 #include <device/pci_ids.h>
 #include <device/smbus_host.h>
+#include <southbridge/intel/common/smbus_ops.h>
 #include "i82801gx.h"
 
-static int lsmbus_read_byte(struct device *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, PCI_BASE_ADDRESS_4);
-
-	return do_smbus_read_byte(res->base, device, address);
-}
-
-static int lsmbus_write_byte(struct device *dev, u8 address, u8 data)
-{
-	u16 device;
-	struct resource *res;
-	struct bus *pbus;
-
-	device = dev->path.i2c.device;
-	pbus = get_pbus_smbus(dev);
-	res = find_resource(pbus->dev, PCI_BASE_ADDRESS_4);
-	return do_smbus_write_byte(res->base, device, address, data);
-}
-
-static int lsmbus_block_write(struct device *dev, u8 cmd, u8 bytes, const u8 *buf)
-{
-	u16 device;
-	struct resource *res;
-	struct bus *pbus;
-
-	device = dev->path.i2c.device;
-	pbus = get_pbus_smbus(dev);
-	res = find_resource(pbus->dev, PCI_BASE_ADDRESS_4);
-	return do_smbus_block_write(res->base, device, cmd, bytes, buf);
-}
-
-static int lsmbus_block_read(struct device *dev, u8 cmd, u8 bytes, u8 *buf)
-{
-	u16 device;
-	struct resource *res;
-	struct bus *pbus;
-
-	device = dev->path.i2c.device;
-	pbus = get_pbus_smbus(dev);
-	res = find_resource(pbus->dev, PCI_BASE_ADDRESS_4);
-	return do_smbus_block_read(res->base, device, cmd, bytes, buf);
-}
-
-static struct smbus_bus_operations lops_smbus_bus = {
-	.read_byte	= lsmbus_read_byte,
-	.write_byte	= lsmbus_write_byte,
-	.block_read	= lsmbus_block_read,
-	.block_write	= lsmbus_block_write,
-};
-
-static void smbus_read_resources(struct device *dev)
-{
-	struct resource *res = new_resource(dev, PCI_BASE_ADDRESS_4);
-	res->base = CONFIG_FIXED_SMBUS_IO_BASE;
-	res->size = 32;
-	res->limit = res->base + res->size - 1;
-	res->flags = IORESOURCE_IO | IORESOURCE_FIXED | IORESOURCE_RESERVE |
-		     IORESOURCE_STORED | IORESOURCE_ASSIGNED;
-}
-
 static struct device_operations smbus_ops = {
 	.read_resources		= smbus_read_resources,
 	.set_resources		= pci_dev_set_resources,