gpio/pch_gpio: Support new device ML7223

Support new device OKI SEMICONDUCTOR ML7223 IOH(Input/Output Hub).
The ML7223 IOH is for MP(Media Phone) use.
The ML7223 is companion chip for Intel Atom E6xx series.
The ML7223 is completely compatible for Intel EG20T PCH.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

2 files changed, 9 insertions, 1 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 2c30911b2414..978852afc9dc 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -358,13 +358,19 @@ config GPIO_LANGWELL
           Say Y here to support Intel Langwell/Penwell GPIO.
 
 config GPIO_PCH
-        tristate "PCH GPIO of Intel Topcliff"
+        tristate "Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO"
         depends on PCI && X86
         help
           This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
           which is an IOH(Input/Output Hub) for x86 embedded processor.
           This driver can access PCH GPIO device.
 
+          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.
+
 config GPIO_ML_IOH
         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
         depends on PCI
diff --git a/drivers/gpio/pch_gpio.c b/drivers/gpio/pch_gpio.c
index f970a5f3585e..36919e77c495 100644
--- a/drivers/gpio/pch_gpio.c
+++ b/drivers/gpio/pch_gpio.c
@@ -283,8 +283,10 @@ static int pch_gpio_resume(struct pci_dev *pdev)
 #define pch_gpio_resume NULL
 #endif
 
+#define PCI_VENDOR_ID_ROHM             0x10DB
 static DEFINE_PCI_DEVICE_TABLE(pch_gpio_pcidev_id) = {
         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8803) },
+        { PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8014) },
         { 0, }
 };
 MODULE_DEVICE_TABLE(pci, pch_gpio_pcidev_id);