pch_uart: Support new device ML7223 IOH

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>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 15 insertions, 5 deletions

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 84876ec2ed97..2f96ce9924b2 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1577,7 +1577,7 @@ config SERIAL_IFX6X60
           Support for the IFX6x60 modem devices on Intel MID platforms.
 
 config SERIAL_PCH_UART
-        tristate "Intel EG20T PCH UART/OKI SEMICONDUCTOR ML7213 IOH"
+        tristate "Intel EG20T PCH / OKI SEMICONDUCTOR IOH(ML7213/ML7223) UART"
         depends on PCI
         select SERIAL_CORE
         help
@@ -1585,10 +1585,12 @@ config SERIAL_PCH_UART
           which is an IOH(Input/Output Hub) for x86 embedded processor.
           Enabling PCH_DMA, this PCH UART works as DMA mode.
 
-          This driver also can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/
-          Output Hub) which is for IVI(In-Vehicle Infotainment) use.
-          ML7213 is companion chip for Intel Atom E6xx series.
-          ML7213 is completely compatible for Intel EG20T PCH.
+          This driver also can be used for OKI SEMICONDUCTOR IOH(Input/
+          Output Hub), ML7213 and ML7223.
+          ML7213 IOH is for IVI(In-Vehicle Infotainment) use and ML7223 IOH is
+          for MP(Media Phone) use.
+          ML7213/ML7223 is companion chip for Intel Atom E6xx series.
+          ML7213/ML7223 is completely compatible for Intel EG20T PCH.
 
 config SERIAL_MSM_SMD
         bool "Enable tty device interface for some SMD ports"
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 26403b8e4b9b..c63d0d152af6 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -253,6 +253,8 @@ enum pch_uart_num_t {
         pch_ml7213_uart0,
         pch_ml7213_uart1,
         pch_ml7213_uart2,
+        pch_ml7223_uart0,
+        pch_ml7223_uart1,
 };
 
 static struct pch_uart_driver_data drv_dat[] = {
@@ -263,6 +265,8 @@ static struct pch_uart_driver_data drv_dat[] = {
         [pch_ml7213_uart0] = {PCH_UART_8LINE, 0},
         [pch_ml7213_uart1] = {PCH_UART_2LINE, 1},
         [pch_ml7213_uart2] = {PCH_UART_2LINE, 2},
+        [pch_ml7223_uart0] = {PCH_UART_8LINE, 0},
+        [pch_ml7223_uart1] = {PCH_UART_2LINE, 1},
 };
 
 static unsigned int default_baud = 9600;
@@ -1534,6 +1538,10 @@ static DEFINE_PCI_DEVICE_TABLE(pch_uart_pci_id) = {
          .driver_data = pch_ml7213_uart1},
         {PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8029),
          .driver_data = pch_ml7213_uart2},
+        {PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x800C),
+         .driver_data = pch_ml7223_uart0},
+        {PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x800D),
+         .driver_data = pch_ml7223_uart1},
         {0,},
 };