sb/broadcom/bcm5785: Consolidate PCI set_subsystem()

This one uses vendor-specific register for the write.

Change-Id: Ie36a87314054d00daed6a63b495bd5f5eabef66e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31989
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>

src/southbridge/broadcom/bcm5785/bcm5785.c

@@ -86,6 +86,13 @@ void bcm5785_enable(struct device *dev)
 #endif
 }
 
+void bcm5785_set_subsystem(struct device *dev, unsigned int vendor,
+			       unsigned int device)
+{
+	pci_write_config32(dev, 0x40,
+		((device & 0xffff) << 16) | (vendor & 0xffff));
+}
+
 struct chip_operations southbridge_broadcom_bcm5785_ops = {
 	CHIP_NAME("Serverworks BCM5785 Southbridge")
 	.enable_dev = bcm5785_enable,

src/southbridge/broadcom/bcm5785/bcm5785.h

@@ -17,6 +17,7 @@
 #ifndef BCM5785_H
 #define BCM5785_H
 
+#include <device/device.h>
 #include "chip.h"
 
 #ifndef __PRE_RAM__
@@ -25,6 +26,9 @@ void bcm5785_enable(struct device *dev);
 void enable_fid_change_on_sb(unsigned sbbusn, unsigned sbdn);
 #endif
 
+void bcm5785_set_subsystem(struct device *dev, unsigned int vendor,
+			       unsigned int device);
+
 void ldtstop_sb(void);
 
 #endif /* BCM5785_H */

src/southbridge/broadcom/bcm5785/ide.c

@@ -35,15 +35,8 @@ static void ide_init(struct device *dev)
 {
 }
 
-static void lpci_set_subsystem(struct device *dev, unsigned vendor,
-			       unsigned device)
-{
-	pci_write_config32(dev, 0x40,
-		((device & 0xffff) << 16) | (vendor & 0xffff));
-}
-
 static struct pci_operations lops_pci = {
-	.set_subsystem = lpci_set_subsystem,
+	.set_subsystem = bcm5785_set_subsystem,
 };
 
 static struct device_operations ide_ops  = {

src/southbridge/broadcom/bcm5785/lpc.c

@@ -115,15 +115,8 @@ static void bcm5785_lpc_enable_resources(struct device *dev)
 	bcm5785_lpc_enable_childrens_resources(dev);
 }
 
-static void lpci_set_subsystem(struct device *dev, unsigned vendor,
-			       unsigned device)
-{
-	pci_write_config32(dev, 0x40,
-		((device & 0xffff) << 16) | (vendor & 0xffff));
-}
-
 static struct pci_operations lops_pci = {
-	.set_subsystem = lpci_set_subsystem,
+	.set_subsystem = bcm5785_set_subsystem,
 };
 
 static struct device_operations lpc_ops  = {

src/southbridge/broadcom/bcm5785/sata.c

@@ -68,15 +68,8 @@ static void sata_init(struct device *dev)
 	}
 }
 
-static void lpci_set_subsystem(struct device *dev, unsigned vendor,
-			       unsigned device)
-{
-	pci_write_config32(dev, 0x40,
-		((device & 0xffff) << 16) | (vendor & 0xffff));
-}
-
 static struct pci_operations lops_pci = {
-	.set_subsystem = lpci_set_subsystem,
+	.set_subsystem = bcm5785_set_subsystem,
 };
 
 static struct device_operations sata_ops  = {

src/southbridge/broadcom/bcm5785/usb.c

@@ -32,15 +32,8 @@ static void usb_init(struct device *dev)
 
 }
 
-static void lpci_set_subsystem(struct device *dev, unsigned vendor,
-			       unsigned device)
-{
-	pci_write_config32(dev, 0x40,
-		((device & 0xffff) << 16) | (vendor & 0xffff));
-}
-
 static struct pci_operations lops_pci = {
-	.set_subsystem = lpci_set_subsystem,
+	.set_subsystem = bcm5785_set_subsystem,
 };
 
 static struct device_operations usb_ops  = {