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Diffstat (limited to 'drivers/i2c/busses/i2c-piix4.c')
-rw-r--r--drivers/i2c/busses/i2c-piix4.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index c46c4bddc7ca..cba325eb852f 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -91,7 +91,7 @@
#define SB800_PIIX4_PORT_IDX_MASK 0x06
#define SB800_PIIX4_PORT_IDX_SHIFT 1
-/* On kerncz, SmBus0Sel is at bit 20:19 of PMx00 DecodeEn */
+/* On kerncz and Hudson2, SmBus0Sel is at bit 20:19 of PMx00 DecodeEn */
#define SB800_PIIX4_PORT_IDX_KERNCZ 0x02
#define SB800_PIIX4_PORT_IDX_MASK_KERNCZ 0x18
#define SB800_PIIX4_PORT_IDX_SHIFT_KERNCZ 3
@@ -358,18 +358,16 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev,
/* Find which register is used for port selection */
if (PIIX4_dev->vendor == PCI_VENDOR_ID_AMD ||
PIIX4_dev->vendor == PCI_VENDOR_ID_HYGON) {
- switch (PIIX4_dev->device) {
- case PCI_DEVICE_ID_AMD_KERNCZ_SMBUS:
+ if (PIIX4_dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS ||
+ (PIIX4_dev->device == PCI_DEVICE_ID_AMD_HUDSON2_SMBUS &&
+ PIIX4_dev->revision >= 0x1F)) {
piix4_port_sel_sb800 = SB800_PIIX4_PORT_IDX_KERNCZ;
piix4_port_mask_sb800 = SB800_PIIX4_PORT_IDX_MASK_KERNCZ;
piix4_port_shift_sb800 = SB800_PIIX4_PORT_IDX_SHIFT_KERNCZ;
- break;
- case PCI_DEVICE_ID_AMD_HUDSON2_SMBUS:
- default:
+ } else {
piix4_port_sel_sb800 = SB800_PIIX4_PORT_IDX_ALT;
piix4_port_mask_sb800 = SB800_PIIX4_PORT_IDX_MASK;
piix4_port_shift_sb800 = SB800_PIIX4_PORT_IDX_SHIFT;
- break;
}
} else {
if (!request_muxed_region(SB800_PIIX4_SMB_IDX, 2,