Release 4.11 drivers/mtd/maps/impa7.c

/*
 * Handle mapping of the NOR flash on implementa A7 boards
 *
 * Copyright 2002 SYSGO Real-Time Solutions GmbH
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>


#define WINDOW_ADDR0 0x00000000      
/* physical properties of flash */

#define WINDOW_SIZE0 0x00800000

#define WINDOW_ADDR1 0x10000000      
/* physical properties of flash */

#define WINDOW_SIZE1 0x00800000

#define NUM_FLASHBANKS 2

#define BUSWIDTH     4


#define MSG_PREFIX "impA7:"   
/* prefix for our printk()'s */

#define MTDID      "impa7-%d"  
/* for mtdparts= partitioning */


static struct mtd_info *impa7_mtd[NUM_FLASHBANKS];


static const char * const rom_probe_types[] = { "jedec_probe", NULL };


static struct map_info impa7_map[NUM_FLASHBANKS] = {
	{
		.name = "impA7 NOR Flash Bank #0",
		.size = WINDOW_SIZE0,
		.bankwidth = BUSWIDTH,
        },
	{
		.name = "impA7 NOR Flash Bank #1",
		.size = WINDOW_SIZE1,
		.bankwidth = BUSWIDTH,
        },
};

/*
 * MTD partitioning stuff
 */

static struct mtd_partition partitions[] =
{
	{
		.name = "FileSystem",
		.size = 0x800000,
		.offset = 0x00000000
	},
};



static int __init init_impa7(void)
{
	const char * const *type;
	int i;
	static struct { u_long addr; u_long size; } pt[NUM_FLASHBANKS] = {
	  { WINDOW_ADDR0, WINDOW_SIZE0 },
	  { WINDOW_ADDR1, WINDOW_SIZE1 },
        };
	int devicesfound = 0;

	for(i=0; i<NUM_FLASHBANKS; i++)
	{
		printk(KERN_NOTICE MSG_PREFIX "probing 0x%08lx at 0x%08lx\n",
		       pt[i].size, pt[i].addr);

		impa7_map[i].phys = pt[i].addr;
		impa7_map[i].virt = ioremap(pt[i].addr, pt[i].size);
		if (!impa7_map[i].virt) {
			printk(MSG_PREFIX "failed to ioremap\n");
			return -EIO;
		}
		simple_map_init(&impa7_map[i]);

		impa7_mtd[i] = NULL;
		type = rom_probe_types;
		for(; !impa7_mtd[i] && *type; type++) {
			impa7_mtd[i] = do_map_probe(*type, &impa7_map[i]);
		}

		if (impa7_mtd[i]) {
			impa7_mtd[i]->owner = THIS_MODULE;
			devicesfound++;
			mtd_device_parse_register(impa7_mtd[i], NULL, NULL,
						  partitions,
						  ARRAY_SIZE(partitions));
		} else {
			iounmap((void __iomem *)impa7_map[i].virt);
		}
	}
	return devicesfound == 0 ? -ENXIO : 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Russell King
217
83.46%
1
12.50%
David Woodhouse
31
11.92%
2
25.00%
Dmitry Baryshkov
6
2.31%
2
25.00%
Jingoo Han
4
1.54%
1
12.50%
Artem B. Bityutskiy
1
0.38%
1
12.50%
Dmitri Vorobiev
1
0.38%
1
12.50%
Total
260
100.00%
8
100.00%



static void __exit cleanup_impa7(void)
{
	int i;
	for (i=0; i<NUM_FLASHBANKS; i++) {
		if (impa7_mtd[i]) {
			mtd_device_unregister(impa7_mtd[i]);
			map_destroy(impa7_mtd[i]);
			iounmap((void __iomem *)impa7_map[i].virt);
			impa7_map[i].virt = NULL;
		}
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Russell King
66
86.84%
1
20.00%
David Woodhouse
7
9.21%
2
40.00%
Jingoo Han
2
2.63%
1
20.00%
Jamie Iles
1
1.32%
1
20.00%
Total
76
100.00%
5
100.00%


module_init(init_impa7);

module_exit(cleanup_impa7);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Pavel Bartusek <pba@sysgo.de>");
MODULE_DESCRIPTION("MTD map driver for implementa impA7");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Russell King
420
81.55%
1
7.14%
David Woodhouse
45
8.74%
3
21.43%
Art Haas
18
3.50%
1
7.14%
Artem B. Bityutskiy
15
2.91%
2
14.29%
Dmitry Baryshkov
7
1.36%
2
14.29%
Jingoo Han
6
1.17%
1
7.14%
Adrian Bunk
1
0.19%
1
7.14%
Thomas Gleixner
1
0.19%
1
7.14%
Jamie Iles
1
0.19%
1
7.14%
Dmitri Vorobiev
1
0.19%
1
7.14%
Total
515
100.00%
14
100.00%
Directory: drivers/mtd/maps

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