[PATCH] I2C: i2c-piix4: Add Broadcom HT-1000 support

Add Broadcom HT-1000 south bridge's PCI ID to i2c-piix driver. Note
that at least on Supermicro H8SSL it uses non-standard SMBHSTCFG = 3
and standard values like 0 or 9 causes hangup.

Signed-off-by: Martin Devera <devik@cdi.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

4 files changed, 8 insertions, 3 deletions

diff --git a/Documentation/i2c/busses/i2c-piix4 b/Documentation/i2c/busses/i2c-piix4
index 856b4b8b962c..a1c8f581afed 100644
--- a/Documentation/i2c/busses/i2c-piix4
+++ b/Documentation/i2c/busses/i2c-piix4
@@ -4,7 +4,7 @@ Supported adapters:
   * Intel 82371AB PIIX4 and PIIX4E
   * Intel 82443MX (440MX)
     Datasheet: Publicly available at the Intel website
-  * ServerWorks OSB4, CSB5 and CSB6 southbridges
+  * ServerWorks OSB4, CSB5, CSB6 and HT-1000 southbridges
     Datasheet: Only available via NDA from ServerWorks
   * Standard Microsystems (SMSC) SLC90E66 (Victory66) southbridge
     Datasheet: Publicly available at the SMSC website http://www.smsc.com
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 7d2705a68e09..089c6f5b24de 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -168,12 +168,14 @@ config I2C_PIIX4
         help
           If you say yes to this option, support will be included for the Intel
           PIIX4 family of mainboard I2C interfaces.  Specifically, the following
-          versions of the chipset are supported:
+          versions of the chipset are supported (note that Serverworks is part
+          of Broadcom):
             Intel PIIX4
             Intel 440MX
             Serverworks OSB4
             Serverworks CSB5
             Serverworks CSB6
+            Serverworks HT-1000
             SMSC Victory66
 
           This driver can also be built as a module.  If so, the module
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index 692f47345481..d9c7c00e71f9 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -22,7 +22,7 @@
 /*
    Supports:
         Intel PIIX4, 440MX
-        Serverworks OSB4, CSB5, CSB6
+        Serverworks OSB4, CSB5, CSB6, HT-1000
         SMSC Victory66
 
    Note: we assume there can only be one device, with one SMBus interface.
@@ -419,6 +419,8 @@ static struct pci_device_id piix4_ids[] = {
           .driver_data = 0 },
         { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6),
           .driver_data = 0 },
+        { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB),
+          .driver_data = 0 },
         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3),
           .driver_data = 3 },
         { PCI_DEVICE(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_3),
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index ec3c32932620..f5a724fbf094 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1371,6 +1371,7 @@
 #define PCI_DEVICE_ID_SERVERWORKS_OSB4    0x0200
 #define PCI_DEVICE_ID_SERVERWORKS_CSB5    0x0201
 #define PCI_DEVICE_ID_SERVERWORKS_CSB6    0x0203
+#define PCI_DEVICE_ID_SERVERWORKS_HT1000SB 0x0205
 #define PCI_DEVICE_ID_SERVERWORKS_OSB4IDE 0x0211
 #define PCI_DEVICE_ID_SERVERWORKS_CSB5IDE 0x0212
 #define PCI_DEVICE_ID_SERVERWORKS_CSB6IDE 0x0213