i2c-viapro: Add VX800/VX820 support

Thanks to new datasheets published on http://linux.via.com.tw we can now add 
support for VX800/VX820 chipsets.
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

Documentation/i2c/busses/i2c-viapro

@@ -16,6 +16,9 @@ Supported adapters:
   * VIA Technologies, Inc. CX700
     Datasheet: available on request and under NDA from VIA
 
+  * VIA Technologies, Inc. VX800/VX820
+    Datasheet: available on http://linux.via.com.tw
+
 Authors:
 	Kyösti Mälkki <kmalkki@cc.hut.fi>,
 	Mark D. Studebaker <mdsxyz123@yahoo.com>,
@@ -49,6 +52,7 @@ Your lspci -n listing must show one of these :
  device 1106:3372   (VT8237S)
  device 1106:3287   (VT8251)
  device 1106:8324   (CX700)
+ device 1106:8353   (VX800/VX820)
 
 If none of these show up, you should look in the BIOS for settings like
 enable ACPI / SMBus or even USB.
@@ -57,5 +61,5 @@ Except for the oldest chips (VT82C596A/B, VT82C686A and most probably
 VT8231), this driver supports I2C block transactions. Such transactions
 are mainly useful to read from and write to EEPROMs.
 
-The CX700 additionally appears to support SMBus PEC, although this driver
-doesn't implement it yet.
+The CX700/VX800/VX820 additionally appears to support SMBus PEC, although
+this driver doesn't implement it yet.

drivers/i2c/busses/Kconfig

@@ -209,7 +209,7 @@ config I2C_VIA
 	  will be called i2c-via.
 
 config I2C_VIAPRO
-	tristate "VIA VT82C596/82C686/82xx and CX700"
+	tristate "VIA VT82C596/82C686/82xx and CX700/VX800/VX820"
 	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the VIA
@@ -223,6 +223,8 @@ config I2C_VIAPRO
 	    VT8237R/A/S
 	    VT8251
 	    CX700
+	    VX800
+	    VX820
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-viapro.

drivers/i2c/busses/i2c-viapro.c

@@ -36,6 +36,7 @@
    VT8237S            0x3372             yes
    VT8251             0x3287             yes
    CX700              0x8324             yes
+   VX800/VX820        0x8353             yes
 
    Note: we assume there can only be one device, with one SMBus interface.
 */
@@ -396,6 +397,7 @@ found:
 
 	switch (pdev->device) {
 	case PCI_DEVICE_ID_VIA_CX700:
+	case PCI_DEVICE_ID_VIA_VX800:
 	case PCI_DEVICE_ID_VIA_8251:
 	case PCI_DEVICE_ID_VIA_8237:
 	case PCI_DEVICE_ID_VIA_8237A:
@@ -459,6 +461,8 @@ static struct pci_device_id vt596_ids[] = {
 	  .driver_data = SMBBA3 },
 	{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_CX700),
 	  .driver_data = SMBBA3 },
+	{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VX800),
+	  .driver_data = SMBBA3 },
 	{ 0, }
 };