Merge branch 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc
[sfrench/cifs-2.6.git] / 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
14 #include <asm/arch-ns9xxx/regs-board-a9m9750dev.h>
15 #include <asm/arch-ns9xxx/board.h>
16
17 #define DRIVER_NAME "serial8250"
18
19 static int __init ns9xxx_plat_serial8250_init(void)
20 {
21         struct plat_serial8250_port *pdata;
22         struct platform_device *pdev;
23         int ret = -ENOMEM;
24         int i;
25
26         if (!board_is_a9m9750dev())
27                 return -ENODEV;
28
29         pdev = platform_device_alloc(DRIVER_NAME, 0);
30         if (!pdev)
31                 goto err;
32
33         pdata = kzalloc(5 * sizeof(*pdata), GFP_KERNEL);
34         if (!pdata)
35                 goto err;
36
37         pdev->dev.platform_data = pdata;
38
39         pdata[0].iobase = FPGA_UARTA_BASE;
40         pdata[1].iobase = FPGA_UARTB_BASE;
41         pdata[2].iobase = FPGA_UARTC_BASE;
42         pdata[3].iobase = FPGA_UARTD_BASE;
43
44         for (i = 0; i < 4; ++i) {
45                 pdata[i].membase = (void __iomem *)pdata[i].iobase;
46                 pdata[i].mapbase = pdata[i].iobase;
47                 pdata[i].iotype = UPIO_MEM;
48                 pdata[i].uartclk = 18432000;
49                 pdata[i].flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
50         }
51
52         pdata[0].irq = IRQ_FPGA_UARTA;
53         pdata[1].irq = IRQ_FPGA_UARTB;
54         pdata[2].irq = IRQ_FPGA_UARTC;
55         pdata[3].irq = IRQ_FPGA_UARTD;
56
57         ret = platform_device_add(pdev);
58         if (ret) {
59 err:
60                 platform_device_put(pdev);
61
62                 printk(KERN_WARNING "Could not add %s (errno=%d)\n",
63                                 DRIVER_NAME, ret);
64         }
65
66         return 0;
67 }
68
69 arch_initcall(ns9xxx_plat_serial8250_init);