LXR linux/arch/arm/mach-ns9xxx/plat-serial8250.c

   1/*
   2 * arch/arm/mach-ns9xxx/plat-serial8250.c
   3 *
   4 * Copyright (C) 2008 by Digi International Inc.
   5 * All rights reserved.
   6 *
   7 * This program is free software; you can redistribute it and/or modify it
   8 * under the terms of the GNU General Public License version 2 as published by
   9 * the Free Software Foundation.
  10 */
  11#include <linux/platform_device.h>
  12#include <linux/serial_8250.h>
  13#include <linux/slab.h>
  14
  15#include <mach/regs-board-a9m9750dev.h>
  16#include <mach/board.h>
  17
  18#define DRIVER_NAME "serial8250"
  19
  20static int __init ns9xxx_plat_serial8250_init(void)
  21{
  22        struct plat_serial8250_port *pdata;
  23        struct platform_device *pdev;
  24        int ret = -ENOMEM;
  25        int i;
  26
  27        if (!board_is_a9m9750dev())
  28                return -ENODEV;
  29
  30        pdev = platform_device_alloc(DRIVER_NAME, 0);
  31        if (!pdev)
  32                goto err;
  33
  34        pdata = kzalloc(5 * sizeof(*pdata), GFP_KERNEL);
  35        if (!pdata)
  36                goto err;
  37
  38        pdev->dev.platform_data = pdata;
  39
  40        pdata[0].iobase = FPGA_UARTA_BASE;
  41        pdata[1].iobase = FPGA_UARTB_BASE;
  42        pdata[2].iobase = FPGA_UARTC_BASE;
  43        pdata[3].iobase = FPGA_UARTD_BASE;
  44
  45        for (i = 0; i < 4; ++i) {
  46                pdata[i].membase = (void __iomem *)pdata[i].iobase;
  47                pdata[i].mapbase = pdata[i].iobase;
  48                pdata[i].iotype = UPIO_MEM;
  49                pdata[i].uartclk = 18432000;
  50                pdata[i].flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
  51        }
  52
  53        pdata[0].irq = IRQ_FPGA_UARTA;
  54        pdata[1].irq = IRQ_FPGA_UARTB;
  55        pdata[2].irq = IRQ_FPGA_UARTC;
  56        pdata[3].irq = IRQ_FPGA_UARTD;
  57
  58        ret = platform_device_add(pdev);
  59        if (ret) {
  60err:
  61                platform_device_put(pdev);
  62
  63                printk(KERN_WARNING "Could not add %s (errno=%d)\n",
  64                                DRIVER_NAME, ret);
  65        }
  66
  67        return 0;
  68}
  69
  70arch_initcall(ns9xxx_plat_serial8250_init);
  71