target/linux/ifxmips/files/arch/mips/ifxmips/board.c

   1 /*
   2  *   arch/mips/ifxmips/board.c
   3  *
   4  *   This program is free software; you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation; either version 2 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program; if not, write to the Free Software
  16  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  17  *
  18  *   Copyright (C) 2007 John Crispin <blogic@openwrt.org>
  19  *
  20  */
  21
  22 #include <linux/autoconf.h>
  23 #include <linux/init.h>
  24 #include <linux/module.h>
  25 #include <linux/types.h>
  26 #include <linux/string.h>
  27 #include <linux/mtd/physmap.h>
  28 #include <linux/kernel.h>
  29 #include <linux/reboot.h>
  30 #include <linux/platform_device.h>
  31 #include <asm/bootinfo.h>
  32 #include <asm/reboot.h>
  33 #include <asm/time.h>
  34 #include <asm/irq.h>
  35 #include <asm/io.h>
  36 #include <asm/ifxmips/ifxmips.h>
  37
  38 #define MAX_IFXMIPS_DEVS                7
  39
  40 #define BOARD_DANUBE                    "Danube"
  41 #define BOARD_DANUBE_CHIPID             0x10129083
  42
  43 #define BOARD_TWINPASS                  "Twinpass"
  44 #define BOARD_TWINPASS_CHIPID   0x3012D083
  45
  46 #define BOARD_DANUBE                    "Danube"
  47
  48 static unsigned int chiprev;
  49
  50 static struct platform_device *ifxmips_devs[MAX_IFXMIPS_DEVS];
  51
  52 static struct platform_device ifxmips_led[] =
  53 {
  54         {
  55                 .id = 0,
  56                 .name = "ifxmips_led",
  57         },
  58 };
  59
  60 static struct platform_device ifxmips_gpio[] =
  61 {
  62         {
  63                 .id = 0,
  64                 .name = "ifxmips_gpio",
  65         },
  66 };
  67
  68 static struct platform_device ifxmips_mii[] =
  69 {
  70         {
  71                 .id = 0,
  72                 .name = "ifxmips_mii0",
  73         },
  74 };
  75
  76 static struct platform_device ifxmips_wdt[] =
  77 {
  78         {
  79                 .id = 0,
  80                 .name = "ifxmips_wdt",
  81         },
  82 };
  83
  84 static struct physmap_flash_data ifxmips_mtd_data = {
  85         .width    = 2,
  86 };
  87
  88 static struct resource ifxmips_mtd_resource = {
  89         .start  = IFXMIPS_FLASH_START,
  90         .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
  91         .flags  = IORESOURCE_MEM,
  92 };
  93
  94 static struct platform_device ifxmips_mtd[] =
  95 {
  96         {
  97                 .id = 0,
  98                 .name = "ifxmips_mtd",
  99                 .dev = {
 100                         .platform_data = &ifxmips_mtd_data,
 101                 },
 102                 .num_resources  = 1,
 103                 .resource   = &ifxmips_mtd_resource,
 104         },
 105 };
 106
 107 #ifdef CONFIG_GPIO_DEVICE
 108 static struct resource ifxmips_gpio_dev_resources[] = {
 109         {
 110                 .name = "gpio",
 111                 .flags  = 0,
 112                 .start = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 8) | (1 << 9) | (1 << 12),
 113                 .end = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 8) | (1 << 9) | (1 << 12),
 114         },
 115 };
 116
 117 static struct platform_device ifxmips_gpio_dev[] = {
 118         {
 119                 .name     = "GPIODEV",
 120                 .id     = -1,
 121                 .num_resources    = ARRAY_SIZE(ifxmips_gpio_dev_resources),
 122                 .resource   = ifxmips_gpio_dev_resources,
 123         }
 124 };
 125 #endif
 126
 127 const char*
 128 get_system_type (void)
 129 {
 130         chiprev = ifxmips_r32(IFXMIPS_MPS_CHIPID);
 131         switch(chiprev)
 132         {
 133         case BOARD_DANUBE_CHIPID:
 134                 return BOARD_DANUBE;
 135
 136         case BOARD_TWINPASS_CHIPID:
 137                 return BOARD_TWINPASS;
 138         }
 139
 140         return BOARD_SYSTEM_TYPE;
 141 }
 142
 143 int __init ifxmips_init_devices(void)
 144 {
 145         /*
 146         *       This is where we detect what chip we are running on
 147         *       Currently we support 3 chips
 148         *       1.) Danube
 149         *       2.) Twinpass (Danube without dsl phy)
 150         */
 151
 152         int dev = 0;
 153
 154         /* the following devices are generic for all targets */
 155         ifxmips_devs[dev++] = ifxmips_led;
 156         ifxmips_devs[dev++] = ifxmips_gpio;
 157         ifxmips_devs[dev++] = ifxmips_mii;
 158         ifxmips_devs[dev++] = ifxmips_mtd;
 159         ifxmips_devs[dev++] = ifxmips_wdt;
 160 #ifdef CONFIG_GPIO_DEVICE
 161         ifxmips_devs[dev++] = ifxmips_gpio_dev;
 162 #endif
 163         return platform_add_devices(ifxmips_devs, dev);
 164 }
 165
 166 arch_initcall(ifxmips_init_devices);