1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/*
* Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
*
* 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/init.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/concat.h>
#include "devices.h"
#include "dev-m25p80.h"
static struct spi_board_info ar71xx_spi_info[] = {
{
.bus_num = 0,
.chip_select = 0,
.max_speed_hz = 25000000,
.modalias = "m25p80",
},
{
.bus_num = 0,
.chip_select = 1,
.max_speed_hz = 25000000,
.modalias = "m25p80",
}
};
void __init ar71xx_add_device_m25p80(struct flash_platform_data *pdata)
{
ar71xx_spi_info[0].platform_data = pdata;
ar71xx_add_device_spi(NULL, ar71xx_spi_info, 1);
}
static struct flash_platform_data *multi_pdata;
static struct mtd_info *concat_devs[2] = { NULL, NULL };
static struct work_struct mtd_concat_work;
static void mtd_concat_add_work(struct work_struct *work)
{
struct mtd_info *mtd;
mtd = mtd_concat_create(concat_devs, ARRAY_SIZE(concat_devs), "flash");
#ifdef CONFIG_MTD_PARTITIONS
add_mtd_partitions(mtd, multi_pdata->parts, multi_pdata->nr_parts);
#else
add_mtd_device(mtd);
#endif
}
static void mtd_concat_add(struct mtd_info *mtd)
{
static bool registered = false;
if (registered)
return;
if (!strcmp(mtd->name, "spi0.0"))
concat_devs[0] = mtd;
else if (!strcmp(mtd->name, "spi0.1"))
concat_devs[1] = mtd;
else
return;
if (!concat_devs[0] || !concat_devs[1])
return;
registered = true;
INIT_WORK(&mtd_concat_work, mtd_concat_add_work);
schedule_work(&mtd_concat_work);
}
static void mtd_concat_remove(struct mtd_info *mtd)
{
}
static void add_mtd_concat_notifier(void)
{
static struct mtd_notifier not = {
.add = mtd_concat_add,
.remove = mtd_concat_remove,
};
register_mtd_user(¬);
}
void __init ar71xx_add_device_m25p80_multi(struct flash_platform_data *pdata)
{
multi_pdata = pdata;
add_mtd_concat_notifier();
ar71xx_add_device_spi(NULL, ar71xx_spi_info, ARRAY_SIZE(ar71xx_spi_info));
}
|
