pch_gpio: Support new device LAPIS Semiconductor ML7831 IOH

ML7831 is companion chip for Intel Atom E6xx series.

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

2 files changed, 7 insertions, 5 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 8482a23887dc..4e04157a3683 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -387,7 +387,7 @@ config GPIO_LANGWELL
           Say Y here to support Intel Langwell/Penwell GPIO.
 
 config GPIO_PCH
-        tristate "Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO"
+        tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
         depends on PCI && X86
         select GENERIC_IRQ_CHIP
         help
@@ -395,11 +395,12 @@ config GPIO_PCH
           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.
+          This driver also can be used for LAPIS Semiconductor IOH(Input/
+          Output Hub), ML7223 and ML7831.
           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.
+          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.
 
 config GPIO_ML_IOH
         tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
diff --git a/drivers/gpio/gpio-pch.c b/drivers/gpio/gpio-pch.c
index a6008e123d04..eb574f2c5a92 100644
--- a/drivers/gpio/gpio-pch.c
+++ b/drivers/gpio/gpio-pch.c
@@ -524,6 +524,7 @@ static DEFINE_PCI_DEVICE_TABLE(pch_gpio_pcidev_id) = {
         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8803) },
         { PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8014) },
         { PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8043) },
+        { PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8803) },
         { 0, }
 };
 MODULE_DEVICE_TABLE(pci, pch_gpio_pcidev_id);