pch_gbe: support ML7831 IOH

commit 7756332f5b64c9c1535712b9679792e8bd4f0019 upstream.

Support new device OKI SEMICONDUCTOR ML7831 IOH(Input/Output Hub)

ML7831 is for general purpose use.
ML7831 is companion chip for Intel Atom E6xx series.
ML7831 is completely compatible for Intel EG20T PCH.

Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2 files changed, 16 insertions, 5 deletions

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 93359fab240..0c3f234afc0 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2543,7 +2543,7 @@ config S6GMAC
 source "drivers/net/stmmac/Kconfig"
 
 config PCH_GBE
-        tristate "Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GbE"
+        tristate "Intel EG20T PCH/OKI SEMICONDUCTOR IOH(ML7223/ML7831) GbE"
         depends on PCI
         select MII
         ---help---
@@ -2556,10 +2556,11 @@ config PCH_GBE
           This driver enables Gigabit Ethernet function.
 
           This driver also can be used for OKI SEMICONDUCTOR IOH(Input/
-          Output Hub), ML7223.
-          ML7223 IOH is for MP(Media Phone) use.
-          ML7223 is companion chip for Intel Atom E6xx series.
-          ML7223 is completely compatible for Intel EG20T PCH.
+          Output Hub), ML7223/ML7831.
+          ML7223 IOH is for MP(Media Phone) use. ML7831 IOH is for general
+          purpose use.
+          ML7223/ML7831 is companion chip for Intel Atom E6xx series.
+          ML7223/ML7831 is completely compatible for Intel EG20T PCH.
 
 endif # NETDEV_1000
 
diff --git a/drivers/net/pch_gbe/pch_gbe_main.c b/drivers/net/pch_gbe/pch_gbe_main.c
index 48ff87c455a..d6d9c0b2d9b 100644
--- a/drivers/net/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/pch_gbe/pch_gbe_main.c
@@ -39,6 +39,9 @@ const char pch_driver_version[] = DRV_VERSION;
 #define PCI_VENDOR_ID_ROHM                      0x10db
 #define PCI_DEVICE_ID_ROHM_ML7223_GBE           0x8013
 
+/* Macros for ML7831 */
+#define PCI_DEVICE_ID_ROHM_ML7831_GBE           0x8802
+
 #define PCH_GBE_TX_WEIGHT         64
 #define PCH_GBE_RX_WEIGHT         64
 #define PCH_GBE_RX_BUFFER_WRITE   16
@@ -2459,6 +2462,13 @@ static DEFINE_PCI_DEVICE_TABLE(pch_gbe_pcidev_id) = {
          .class = (PCI_CLASS_NETWORK_ETHERNET << 8),
          .class_mask = (0xFFFF00)
          },
+        {.vendor = PCI_VENDOR_ID_ROHM,
+         .device = PCI_DEVICE_ID_ROHM_ML7831_GBE,
+         .subvendor = PCI_ANY_ID,
+         .subdevice = PCI_ANY_ID,
+         .class = (PCI_CLASS_NETWORK_ETHERNET << 8),
+         .class_mask = (0xFFFF00)
+         },
         /* required last entry */
         {0}
 };