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 spi_board_info ath79_spi_info[] = {
23 .max_speed_hz = 25000000,
29 .max_speed_hz = 25000000,
34 static struct ath79_spi_platform_data ath79_spi_data;
36 void __init ath79_register_m25p80(struct flash_platform_data *pdata)
38 ath79_spi_data.bus_num = 0;
39 ath79_spi_data.num_chipselect = 1;
40 ath79_spi_info[0].platform_data = pdata;
41 ath79_register_spi(&ath79_spi_data, ath79_spi_info, 1);
44 static struct flash_platform_data *multi_pdata;
46 static struct mtd_info *concat_devs[2] = { NULL, NULL };
47 static struct work_struct mtd_concat_work;
49 static void mtd_concat_add_work(struct work_struct *work)
53 mtd = mtd_concat_create(concat_devs, ARRAY_SIZE(concat_devs), "flash");
55 mtd_device_register(mtd, multi_pdata->parts, multi_pdata->nr_parts);
58 static void mtd_concat_add(struct mtd_info *mtd)
60 static bool registered = false;
65 if (!strcmp(mtd->name, "spi0.0"))
67 else if (!strcmp(mtd->name, "spi0.1"))
72 if (!concat_devs[0] || !concat_devs[1])
76 INIT_WORK(&mtd_concat_work, mtd_concat_add_work);
77 schedule_work(&mtd_concat_work);
80 static void mtd_concat_remove(struct mtd_info *mtd)
84 static void add_mtd_concat_notifier(void)
86 static struct mtd_notifier not = {
87 .add = mtd_concat_add,
88 .remove = mtd_concat_remove,
91 register_mtd_user(¬);
94 void __init ath79_register_m25p80_multi(struct flash_platform_data *pdata)
97 add_mtd_concat_notifier();
98 ath79_spi_data.bus_num = 0;
99 ath79_spi_data.num_chipselect = 2;
100 ath79_register_spi(&ath79_spi_data, ath79_spi_info, 2);