serial: 8250_pci: add Pericom PCIe Serial board Support (12d8:7952/4/8) - Chip PI7C9X...

Signed-off-by: Angelo Butti <buttiangelo@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 4ea45c15388cc8148cf9e5b5773f909962b28e4c..4697a514b80a6d2cafcd6a2800d8cdc820c6594f 100644 (file)
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -1307,6 +1307,29 @@ static int pci_default_setup(struct serial_private *priv,
        return setup_port(priv, port, bar, offset, board->reg_shift);
 }
 
+static int pci_pericom_setup(struct serial_private *priv,
+                 const struct pciserial_board *board,
+                 struct uart_8250_port *port, int idx)
+{
+       unsigned int bar, offset = board->first_offset, maxnr;
+
+       bar = FL_GET_BASE(board->flags);
+       if (board->flags & FL_BASE_BARS)
+               bar += idx;
+       else
+               offset += idx * board->uart_offset;
+
+       maxnr = (pci_resource_len(priv->dev, bar) - board->first_offset) >>
+               (board->reg_shift + 3);
+
+       if (board->flags & FL_REGION_SZ_CAP && idx >= maxnr)
+               return 1;
+
+       port->port.uartclk = 14745600;
+
+       return setup_port(priv, port, bar, offset, board->reg_shift);
+}
+
 static int
 ce4100_serial_setup(struct serial_private *priv,
                  const struct pciserial_board *board,
@@ -2015,6 +2038,31 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
                .setup          = pci_default_setup,
                .exit           = pci_plx9050_exit,
        },
+       /*
+        * Pericom
+        */
+       {
+               .vendor         = 0x12d8,
+               .device         = 0x7952,
+               .subvendor      = PCI_ANY_ID,
+               .subdevice      = PCI_ANY_ID,
+               .setup          = pci_pericom_setup,
+       },
+       {
+               .vendor         = 0x12d8,
+               .device         = 0x7954,
+               .subvendor      = PCI_ANY_ID,
+               .subdevice      = PCI_ANY_ID,
+               .setup          = pci_pericom_setup,
+       },
+       {
+               .vendor         = 0x12d8,
+               .device         = 0x7958,
+               .subvendor      = PCI_ANY_ID,
+               .subdevice      = PCI_ANY_ID,
+               .setup          = pci_pericom_setup,
+       },
+
        /*
         * PLX
         */