/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);