2 * Copyright (C) 2009-2012 Gabor Juhos <juhosg@openwrt.org>
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 as published
6 * by the Free Software Foundation.
9 #include <linux/init.h>
10 #include <linux/spi/spi.h>
11 #include <linux/spi/flash.h>
12 #include <linux/mtd/mtd.h>
13 #include <linux/mtd/partitions.h>
14 #include <linux/mtd/concat.h>
17 #include "dev-m25p80.h"
19 static struct ath79_spi_controller_data ath79_spi0_cdata
=
21 .cs_type
= ATH79_SPI_CS_TYPE_INTERNAL
,
25 static struct ath79_spi_controller_data ath79_spi1_cdata
=
27 .cs_type
= ATH79_SPI_CS_TYPE_INTERNAL
,
31 static struct spi_board_info ath79_spi_info
[] = {
35 .max_speed_hz
= 25000000,
37 .controller_data
= &ath79_spi0_cdata
,
42 .max_speed_hz
= 25000000,
44 .controller_data
= &ath79_spi1_cdata
,
48 static struct ath79_spi_platform_data ath79_spi_data
;
50 void __init
ath79_register_m25p80(struct flash_platform_data
*pdata
)
52 ath79_spi_data
.bus_num
= 0;
53 ath79_spi_data
.num_chipselect
= 1;
54 ath79_spi0_cdata
.is_flash
= true;
55 ath79_spi_info
[0].platform_data
= pdata
;
56 ath79_register_spi(&ath79_spi_data
, ath79_spi_info
, 1);
59 static struct flash_platform_data
*multi_pdata
;
61 static struct mtd_info
*concat_devs
[2] = { NULL
, NULL
};
62 static struct work_struct mtd_concat_work
;
64 static void mtd_concat_add_work(struct work_struct
*work
)
68 mtd
= mtd_concat_create(concat_devs
, ARRAY_SIZE(concat_devs
), "flash");
70 mtd_device_register(mtd
, multi_pdata
->parts
, multi_pdata
->nr_parts
);
73 static void mtd_concat_add(struct mtd_info
*mtd
)
75 static bool registered
= false;
80 if (!strcmp(mtd
->name
, "spi0.0"))
82 else if (!strcmp(mtd
->name
, "spi0.1"))
87 if (!concat_devs
[0] || !concat_devs
[1])
91 INIT_WORK(&mtd_concat_work
, mtd_concat_add_work
);
92 schedule_work(&mtd_concat_work
);
95 static void mtd_concat_remove(struct mtd_info
*mtd
)
99 static void add_mtd_concat_notifier(void)
101 static struct mtd_notifier
not = {
102 .add
= mtd_concat_add
,
103 .remove
= mtd_concat_remove
,
106 register_mtd_user(¬);
109 void __init
ath79_register_m25p80_large(struct flash_platform_data
*pdata
)
111 ath79_spi_data
.bus_num
= 0;
112 ath79_spi_data
.num_chipselect
= 1;
113 ath79_spi0_cdata
.is_flash
= false;
114 ath79_spi_info
[0].platform_data
= pdata
;
115 ath79_register_spi(&ath79_spi_data
, ath79_spi_info
, 1);
118 void __init
ath79_register_m25p80_multi(struct flash_platform_data
*pdata
)
121 add_mtd_concat_notifier();
122 ath79_spi_data
.bus_num
= 0;
123 ath79_spi_data
.num_chipselect
= 2;
124 ath79_spi0_cdata
.is_flash
= true;
125 ath79_register_spi(&ath79_spi_data
, ath79_spi_info
, 2);