target/linux/adm5120-2.6/files/drivers/mtd/maps/adm5120_mtd.c

   1 /*
   2  *      Flash device on the ADM5120 board
   3  *
   4  *      Copyright Jeroen Vreeken (pe1rxq@amsat.org), 2005
   5  *
   6  *      This program is free software; you can redistribute it and/or
   7  *      modify it under the terms of the GNU General Public License version
   8  *      2 as published by the Free Software Foundation.
   9  */
  10
  11 #include <linux/autoconf.h>
  12 #include <linux/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/mtd/mtd.h>
  15 #include <linux/mtd/map.h>
  16
  17 #define FLASH_PHYS_ADDR         0x1FC00000
  18 #define FLASH_SIZE              0x200000
  19
  20 static struct mtd_info *adm5120_mtd;
  21
  22 static struct map_info adm5120_mtd_map = {
  23         .name = "ADM5120",
  24         .size = FLASH_SIZE,
  25         .bankwidth = 2,
  26         .phys = FLASH_PHYS_ADDR,
  27 };
  28
  29 static int __init adm5120_mtd_init(void)
  30 {
  31         printk(KERN_INFO "ADM5120 board flash (0x%x at 0x%x)\n", FLASH_SIZE,
  32             FLASH_PHYS_ADDR);
  33         adm5120_mtd_map.virt = ioremap_nocache(FLASH_PHYS_ADDR, FLASH_SIZE);
  34         simple_map_init(&adm5120_mtd_map);
  35         adm5120_mtd = do_map_probe("cfi_probe", &adm5120_mtd_map);
  36         if (adm5120_mtd) {
  37                 adm5120_mtd->owner = THIS_MODULE;
  38                 add_mtd_device(adm5120_mtd);
  39                 return 0;
  40         }
  41         return -ENXIO;
  42 }
  43
  44 static void __exit adm5120_mtd_exit(void)
  45 {
  46         del_mtd_device(adm5120_mtd);
  47         map_destroy(adm5120_mtd);
  48 }
  49
  50 module_init(adm5120_mtd_init);
  51 module_exit(adm5120_mtd_exit);
  52
  53 MODULE_LICENSE("GPL");
  54 MODULE_AUTHOR("Jeroen Vreeken (pe1rxq@amsat.org)");
  55 MODULE_DESCRIPTION("MTD map driver for ADM5120 boards");