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(¬);
110 void __init ath79_register_m25p80_multi(struct flash_platform_data *pdata)
113 add_mtd_concat_notifier();
114 ath79_spi_data.bus_num = 0;
115 ath79_spi_data.num_chipselect = 2;
116 ath79_spi0_cdata.is_flash = true;
117 ath79_register_spi(&ath79_spi_data, ath79_spi_info, 2);