include/device/pci_ids,soc/amd/common/block/lpc: drop duplicate PCI IDs

PCI_DEVICE_ID_AMD_FAM17H_LPC and PCI_DEVICE_ID_AMD_FAM17H_SMBUS redefine
the same values that are already defined by PCI_DEVICE_ID_AMD_CZ_LPC and
PCI_DEVICE_ID_AMD_CZ_SMBUS, so drop PCI_DEVICE_ID_AMD_FAM17H_LPC and
PCI_DEVICE_ID_AMD_FAM17H_SMBUS. Also add some comments to the places in
the code where the defines are used to clarify which ID is used on which
hardware generation.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Id0b3d7b5a886ccc76d82ada6be4145e85fd51ede
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58696
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

5 files changed, 6 insertions, 3 deletions

diff --git a/src/include/device/pci_ids.h b/src/include/device/pci_ids.h
index 0e4da4192191..1ed6ac9edacb 100644
--- a/src/include/device/pci_ids.h
+++ b/src/include/device/pci_ids.h
@@ -620,8 +620,6 @@
 #define PCI_DEVICE_ID_AMD_FAM17H_SATA_AHCI_RAID_VER0		0x7916
 #define PCI_DEVICE_ID_AMD_FAM17H_SATA_AHCI_RAID_VER1		0x7917
 #define PCI_DEVICE_ID_AMD_FAM17H_MODEL18H_SD			0x7906
-#define PCI_DEVICE_ID_AMD_FAM17H_SMBUS				0x790B
-#define PCI_DEVICE_ID_AMD_FAM17H_LPC				0x790E
 #define PCI_DEVICE_ID_AMD_FAM17H_MODEL18H_GBE			0x1458
 #define PCI_DEVICE_ID_AMD_FAM17H_MODEL60H_GBE			0x1641
 #define PCI_DEVICE_ID_AMD_FAM17H_I2S_AC97			0x1644
diff --git a/src/soc/amd/common/block/lpc/lpc.c b/src/soc/amd/common/block/lpc/lpc.c
index 496816b0f3f7..7c466459e67c 100644
--- a/src/soc/amd/common/block/lpc/lpc.c
+++ b/src/soc/amd/common/block/lpc/lpc.c
@@ -322,9 +322,10 @@ static struct device_operations lpc_ops = {
 };
 
 static const unsigned short pci_device_ids[] = {
+	/* PCI device ID is used on all discrete FCHs and Family 16h Models 00h-3Fh */
 	PCI_DEVICE_ID_AMD_SB900_LPC,
+	/* PCI device ID is used on all integrated FCHs except Family 16h Models 00h-3Fh */
 	PCI_DEVICE_ID_AMD_CZ_LPC,
-	PCI_DEVICE_ID_AMD_FAM17H_LPC,
 	0
 };
 static const struct pci_driver lpc_driver __pci_driver = {
diff --git a/src/soc/amd/common/block/smbus/sm.c b/src/soc/amd/common/block/smbus/sm.c
index ce66cbbb7a57..ae2edc150613 100644
--- a/src/soc/amd/common/block/smbus/sm.c
+++ b/src/soc/amd/common/block/smbus/sm.c
@@ -89,5 +89,6 @@ static struct device_operations smbus_ops = {
 static const struct pci_driver smbus_driver __pci_driver = {
 	.ops = &smbus_ops,
 	.vendor = PCI_VENDOR_ID_AMD,
+	/* PCI device ID is used on all integrated FCHs except Family 16h Models 00h-3Fh */
 	.device = PCI_DEVICE_ID_AMD_CZ_SMBUS,
 };
diff --git a/src/southbridge/amd/pi/hudson/lpc.c b/src/southbridge/amd/pi/hudson/lpc.c
index 77d39c5e915e..784147c9173e 100644
--- a/src/southbridge/amd/pi/hudson/lpc.c
+++ b/src/southbridge/amd/pi/hudson/lpc.c
@@ -354,7 +354,9 @@ static struct device_operations lpc_ops = {
 };
 
 static const unsigned short pci_device_ids[] = {
+	/* PCI device ID is used on all discrete FCHs and Family 16h Models 00h-3Fh */
 	PCI_DEVICE_ID_AMD_SB900_LPC,
+	/* PCI device ID is used on all integrated FCHs except Family 16h Models 00h-3Fh */
 	PCI_DEVICE_ID_AMD_CZ_LPC,
 	0
 };
diff --git a/src/southbridge/amd/pi/hudson/sm.c b/src/southbridge/amd/pi/hudson/sm.c
index 6f9e03c2d32c..f6422cf37e74 100644
--- a/src/southbridge/amd/pi/hudson/sm.c
+++ b/src/southbridge/amd/pi/hudson/sm.c
@@ -106,5 +106,6 @@ static struct device_operations smbus_ops = {
 static const struct pci_driver smbus_driver __pci_driver = {
 	.ops = &smbus_ops,
 	.vendor = PCI_VENDOR_ID_AMD,
+	/* PCI device ID is used on all discrete FCHs and Family 16h Models 00h-3Fh */
 	.device = PCI_DEVICE_ID_AMD_SB900_SM,
 };