spi-topcliff-pch: 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, 4 deletions

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 52e2900d9d8e..b02920a6e974 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -346,14 +346,14 @@ config SPI_TI_SSP
           serial port.
 
 config SPI_TOPCLIFF_PCH
-        tristate "Intel EG20T PCH/OKI SEMICONDUCTOR ML7213 IOH SPI controller"
+        tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) SPI"
         depends on PCI
         help
           SPI driver for the Topcliff PCH (Platform Controller Hub) SPI bus
           used in some x86 embedded processors.
 
-          This driver also supports the ML7213, a companion chip for the
-          Atom E6xx series and compatible with the Intel EG20T PCH.
+          This driver also supports the ML7213/ML7223/ML7831, a companion chip
+          for the Atom E6xx series and compatible with the Intel EG20T PCH.
 
 config SPI_TXX9
         tristate "Toshiba TXx9 SPI controller"
diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c
index 6a80749391db..2b1e96643d71 100644
--- a/drivers/spi/spi-topcliff-pch.c
+++ b/drivers/spi/spi-topcliff-pch.c
@@ -95,16 +95,18 @@
 #define PCH_CLOCK_HZ            50000000
 #define PCH_MAX_SPBR            1023
 
-/* Definition for ML7213 by OKI SEMICONDUCTOR */
+/* Definition for ML7213/ML7831 by OKI SEMICONDUCTOR */
 #define PCI_VENDOR_ID_ROHM              0x10DB
 #define PCI_DEVICE_ID_ML7213_SPI        0x802c
 #define PCI_DEVICE_ID_ML7223_SPI        0x800F
+#define PCI_DEVICE_ID_ML7831_SPI        0x8816
 
 /*
  * Set the number of SPI instance max
  * Intel EG20T PCH :            1ch
  * OKI SEMICONDUCTOR ML7213 IOH :       2ch
  * OKI SEMICONDUCTOR ML7223 IOH :       1ch
+ * OKI SEMICONDUCTOR ML7831 IOH :       1ch
 */
 #define PCH_SPI_MAX_DEV                 2
 
@@ -218,6 +220,7 @@ static struct pci_device_id pch_spi_pcidev_id[] = {
         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_GE_SPI),    1, },
         { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7213_SPI), 2, },
         { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7223_SPI), 1, },
+        { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7831_SPI), 1, },
         { }
 };