pch_uart: Fix MSI setting issue

[linux-flexiantxendom0.git] / drivers / tty / serial / pch_uart.c

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 35cb9af..da776a0 100644 (file)
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1,5 +1,5 @@
 /*
- *Copyright (C) 2010 OKI SEMICONDUCTOR CO., LTD.
+ *Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
  *
  *This program is free software; you can redistribute it and/or modify
  *it under the terms of the GNU General Public License as published by
@@ -20,6 +20,8 @@
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/serial_core.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/dmi.h>
@@ -44,7 +46,8 @@ enum {
 
 /* Set the max number of UART port
  * Intel EG20T PCH: 4 port
- * OKI SEMICONDUCTOR ML7213 IOH: 3 port
+ * LAPIS Semiconductor ML7213 IOH: 3 port
+ * LAPIS Semiconductor ML7223 IOH: 2 port
 */
 #define PCH_UART_NR    4
 
@@ -255,6 +258,8 @@ enum pch_uart_num_t {
        pch_ml7213_uart2,
        pch_ml7223_uart0,
        pch_ml7223_uart1,
+       pch_ml7831_uart0,
+       pch_ml7831_uart1,
 };
 
 static struct pch_uart_driver_data drv_dat[] = {
@@ -267,6 +272,8 @@ static struct pch_uart_driver_data drv_dat[] = {
        [pch_ml7213_uart2] = {PCH_UART_2LINE, 2},
        [pch_ml7223_uart0] = {PCH_UART_8LINE, 0},
        [pch_ml7223_uart1] = {PCH_UART_2LINE, 1},
+       [pch_ml7831_uart0] = {PCH_UART_8LINE, 0},
+       [pch_ml7831_uart1] = {PCH_UART_2LINE, 1},
 };
 
 static unsigned int default_baud = 9600;
@@ -597,7 +604,8 @@ static void pch_request_dma(struct uart_port *port)
        dma_cap_zero(mask);
        dma_cap_set(DMA_SLAVE, mask);
 
-       dma_dev = pci_get_bus_and_slot(2, PCI_DEVFN(0xa, 0)); /* Get DMA's dev
+       dma_dev = pci_get_bus_and_slot(priv->pdev->bus->number,
+                                      PCI_DEVFN(0xa, 0)); /* Get DMA's dev
                                                                information */
        /* Set Tx DMA */
        param = &priv->param_tx;
@@ -624,6 +632,7 @@ static void pch_request_dma(struct uart_port *port)
                dev_err(priv->port.dev, "%s:dma_request_channel FAILS(Rx)\n",
                        __func__);
                dma_release_channel(priv->chan_tx);
+               priv->chan_tx = NULL;
                return;
        }
 
@@ -1211,8 +1220,7 @@ static void pch_uart_shutdown(struct uart_port *port)
                dev_err(priv->port.dev,
                        "pch_uart_hal_set_fifo Failed(ret=%d)\n", ret);
 
-       if (priv->use_dma_flag)
-               pch_free_dma(port);
+       pch_free_dma(port);
 
        free_irq(priv->port.irq, priv);
 }
@@ -1276,6 +1284,7 @@ static void pch_uart_set_termios(struct uart_port *port,
        if (rtn)
                goto out;
 
+       pch_uart_set_mctrl(&priv->port, priv->port.mctrl);
        /* Don't rewrite B0 */
        if (tty_termios_baud_rate(termios))
                tty_termios_encode_baud_rate(termios, baud, baud);
@@ -1396,6 +1405,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
        int fifosize, base_baud;
        int port_type;
        struct pch_uart_driver_data *board;
+       const char *board_name;
 
        board = &drv_dat[id->driver_data];
        port_type = board->port_type;
@@ -1411,7 +1421,8 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
        base_baud = 1843200; /* 1.8432MHz */
 
        /* quirk for CM-iTC board */
-       if (strstr(dmi_get_system_info(DMI_BOARD_NAME), "CM-iTC"))
+       board_name = dmi_get_system_info(DMI_BOARD_NAME);
+       if (board_name && strstr(board_name, "CM-iTC"))
                base_baud = 192000000; /* 192.0MHz */
 
        switch (port_type) {
@@ -1427,6 +1438,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
        }
 
        pci_enable_msi(pdev);
+       pci_set_master(pdev);
 
        iobase = pci_resource_start(pdev, 0);
        mapbase = pci_resource_start(pdev, 1);
@@ -1546,6 +1558,10 @@ static DEFINE_PCI_DEVICE_TABLE(pch_uart_pci_id) = {
         .driver_data = pch_ml7223_uart0},
        {PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x800D),
         .driver_data = pch_ml7223_uart1},
+       {PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8811),
+        .driver_data = pch_ml7831_uart0},
+       {PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8812),
+        .driver_data = pch_ml7831_uart1},
        {0,},
 };