1/*
2 * $Id: rpxlite.c,v 1.1.1.1 2007/08/03 18:52:44 Exp $
3 *
4 * Handle mapping of the flash on the RPX Lite and CLLF boards
5 */
6
7#include <linux/module.h>
8#include <linux/types.h>
9#include <linux/kernel.h>
10#include <linux/init.h>
11#include <asm/io.h>
12#include <linux/mtd/mtd.h>
13#include <linux/mtd/map.h>
14
15
16#define WINDOW_ADDR 0xfe000000
17#define WINDOW_SIZE 0x800000
18
19static struct mtd_info *mymtd;
20
21static struct map_info rpxlite_map = {
22	.name = "RPX",
23	.size = WINDOW_SIZE,
24	.bankwidth = 4,
25	.phys = WINDOW_ADDR,
26};
27
28int __init init_rpxlite(void)
29{
30	printk(KERN_NOTICE "RPX Lite or CLLF flash device: %x at %x\n", WINDOW_SIZE*4, WINDOW_ADDR);
31	rpxlite_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE * 4);
32
33	if (!rpxlite_map.virt) {
34		printk("Failed to ioremap\n");
35		return -EIO;
36	}
37	simple_map_init(&rpxlite_map);
38	mymtd = do_map_probe("cfi_probe", &rpxlite_map);
39	if (mymtd) {
40		mymtd->owner = THIS_MODULE;
41		add_mtd_device(mymtd);
42		return 0;
43	}
44
45	iounmap((void *)rpxlite_map.virt);
46	return -ENXIO;
47}
48
49static void __exit cleanup_rpxlite(void)
50{
51	if (mymtd) {
52		del_mtd_device(mymtd);
53		map_destroy(mymtd);
54	}
55	if (rpxlite_map.virt) {
56		iounmap((void *)rpxlite_map.virt);
57		rpxlite_map.virt = 0;
58	}
59}
60
61module_init(init_rpxlite);
62module_exit(cleanup_rpxlite);
63
64MODULE_LICENSE("GPL");
65MODULE_AUTHOR("Arnold Christensen <AKC@pel.dk>");
66MODULE_DESCRIPTION("MTD map driver for RPX Lite and CLLF boards");
67