target/linux/rdc/files-2.6.30/arch/x86/mach-rdc321x/platform.c

   1 /*
   2  *  Generic RDC321x platform devices
   3  *
   4  *  Copyright (C) 2007-2009 OpenWrt.org
   5  *  Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
   6  *  Copyright (C) 2008-2009 Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
   7  *
   8  *  This program is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU General Public License
  10  *  as published by the Free Software Foundation; either version 2
  11  *  of the License, or (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the
  20  *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21  *  Boston, MA  02110-1301, USA.
  22  *
  23  */
  24
  25 #include <linux/init.h>
  26 //#include <linux/kernel.h>
  27 //#include <linux/list.h>
  28 //#include <linux/device.h>
  29 #include <linux/platform_device.h>
  30 //#include <linux/version.h>
  31 //#include <linux/input.h>
  32 #include <linux/mtd/map.h>
  33 #include <linux/mtd/mtd.h>
  34 #include <linux/mtd/physmap.h>
  35 #include <linux/root_dev.h>
  36
  37 #include <asm/rdc_boards.h>
  38
  39 static struct rdc_platform_data rdcplat_data;
  40
  41 /* LEDS */
  42 static struct platform_device rdc321x_leds = {
  43         .name = "leds-gpio",
  44         .id = -1,
  45         .dev = {
  46                 .platform_data = &rdcplat_data.led_data,
  47         }
  48 };
  49
  50 /* Button */
  51 static struct platform_device rdc321x_buttons = {
  52         .name = "gpio-buttons",
  53         .id = -1,
  54         .dev = {
  55                 .platform_data = &rdcplat_data.button_data,
  56         }
  57 };
  58
  59 static __initdata struct platform_device *rdc321x_devs[] = {
  60         &rdc321x_leds,
  61         &rdc321x_buttons,
  62 };
  63
  64 const char *__initdata boards[] = {
  65         "Sitecom",
  66         "AR525W",
  67         "Bifferboard",
  68         "R8610",
  69         0
  70 };
  71
  72 static struct map_info rdc_map_info = {
  73         .name = "rdc_flash",
  74         .size = 0x800000,       //8MB
  75         .phys = 0xFF800000,     //(u32) -rdc_map_info.size;
  76         .bankwidth = 2
  77 };
  78
  79 static int __init rdc_board_setup(void)
  80 {
  81         struct mtd_partition *partitions;
  82         int count, res;
  83         struct mtd_info *mtdinfo;
  84
  85         simple_map_init(&rdc_map_info);
  86
  87         while (true) {
  88                 rdc_map_info.virt = ioremap(rdc_map_info.phys, rdc_map_info.size);
  89                 if (rdc_map_info.virt == NULL)
  90                         continue;
  91
  92                 mtdinfo = do_map_probe("cfi_probe", &rdc_map_info);
  93                 if (mtdinfo == NULL)
  94                         mtdinfo = do_map_probe("jedec_probe", &rdc_map_info);
  95                 if (mtdinfo != NULL)
  96                         break;
  97
  98                 iounmap(rdc_map_info.virt);
  99                 if ((rdc_map_info.size >>= 1) < 0x100000)       //1MB
 100                         panic("RDC321x: Could not find start of flash!");
 101                 rdc_map_info.phys = (u32) -rdc_map_info.size;
 102         }
 103
 104         count = parse_mtd_partitions(mtdinfo, boards, &partitions, (unsigned long) &rdcplat_data);
 105
 106         if (count <= 0) {
 107                 panic("RDC321x: can't identify board type");
 108                 return -ENOSYS;
 109         }
 110
 111         ROOT_DEV = 0;
 112         res = add_mtd_partitions(mtdinfo, partitions, count);
 113         if (res)
 114                 return res;
 115
 116         return platform_add_devices(rdc321x_devs, ARRAY_SIZE(rdc321x_devs));
 117
 118 }
 119
 120 late_initcall(rdc_board_setup);