arch/mips/bcm47xx/wgt634u.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
   7  */
   8
   9 #include <linux/platform_device.h>
  10 #include <linux/module.h>
  11 #include <linux/leds.h>
  12 #include <linux/mtd/physmap.h>
  13 #include <linux/ssb/ssb.h>
  14 #include <asm/mach-bcm47xx/bcm47xx.h>
  15
  16 /* GPIO definitions for the WGT634U */
  17 #define WGT634U_GPIO_LED        3
  18 #define WGT634U_GPIO_RESET      2
  19 #define WGT634U_GPIO_TP1        7
  20 #define WGT634U_GPIO_TP2        6
  21 #define WGT634U_GPIO_TP3        5
  22 #define WGT634U_GPIO_TP4        4
  23 #define WGT634U_GPIO_TP5        1
  24
  25 static struct gpio_led wgt634u_leds[] = {
  26         {
  27                 .name = "power",
  28                 .gpio = WGT634U_GPIO_LED,
  29                 .active_low = 1,
  30                 .default_trigger = "heartbeat",
  31         },
  32 };
  33
  34 static struct gpio_led_platform_data wgt634u_led_data = {
  35         .num_leds =     ARRAY_SIZE(wgt634u_leds),
  36         .leds =         wgt634u_leds,
  37 };
  38
  39 static struct platform_device wgt634u_gpio_leds = {
  40         .name =         "leds-gpio",
  41         .id =           -1,
  42         .dev = {
  43                 .platform_data = &wgt634u_led_data,
  44         }
  45 };
  46
  47
  48 /* 8MiB flash. The struct mtd_partition matches original Netgear WGT634U
  49    firmware. */
  50 static struct mtd_partition wgt634u_partitions[] = {
  51         {
  52                 .name       = "cfe",
  53                 .offset     = 0,
  54                 .size       = 0x60000,          /* 384k */
  55                 .mask_flags = MTD_WRITEABLE     /* force read-only */
  56         },
  57         {
  58                 .name   = "config",
  59                 .offset = 0x60000,
  60                 .size   = 0x20000               /* 128k */
  61         },
  62         {
  63                 .name   = "linux",
  64                 .offset = 0x80000,
  65                 .size   = 0x140000              /* 1280k */
  66         },
  67         {
  68                 .name   = "jffs",
  69                 .offset = 0x1c0000,
  70                 .size   = 0x620000              /* 6272k */
  71         },
  72         {
  73                 .name   = "nvram",
  74                 .offset = 0x7e0000,
  75                 .size   = 0x20000               /* 128k */
  76         },
  77 };
  78
  79 static struct physmap_flash_data wgt634u_flash_data = {
  80         .parts    = wgt634u_partitions,
  81         .nr_parts = ARRAY_SIZE(wgt634u_partitions)
  82 };
  83
  84 static struct resource wgt634u_flash_resource = {
  85         .flags = IORESOURCE_MEM,
  86 };
  87
  88 static struct platform_device wgt634u_flash = {
  89         .name          = "physmap-flash",
  90         .id            = 0,
  91         .dev           = { .platform_data = &wgt634u_flash_data, },
  92         .resource      = &wgt634u_flash_resource,
  93         .num_resources = 1,
  94 };
  95
  96 /* Platform devices */
  97 static struct platform_device *wgt634u_devices[] __initdata = {
  98         &wgt634u_flash,
  99         &wgt634u_gpio_leds,
 100 };
 101
 102 static int __init wgt634u_init(void)
 103 {
 104         /* There is no easy way to detect that we are running on a WGT634U
 105          * machine. Use the MAC address as an heuristic. Netgear Inc. has
 106          * been allocated ranges 00:09:5b:xx:xx:xx and 00:0f:b5:xx:xx:xx.
 107          */
 108
 109         u8 *et0mac = ssb_bcm47xx.sprom.et0mac;
 110
 111         if (et0mac[0] == 0x00 &&
 112             ((et0mac[1] == 0x09 && et0mac[2] == 0x5b) ||
 113              (et0mac[1] == 0x0f && et0mac[2] == 0xb5))) {
 114                 struct ssb_mipscore *mcore = &ssb_bcm47xx.mipscore;
 115                 wgt634u_flash_data.width = mcore->flash_buswidth;
 116                 wgt634u_flash_resource.start = mcore->flash_window;
 117                 wgt634u_flash_resource.end = mcore->flash_window
 118                                            + mcore->flash_window_size
 119                                            - 1;
 120                 return platform_add_devices(wgt634u_devices,
 121                                             ARRAY_SIZE(wgt634u_devices));
 122         } else
 123                 return -ENODEV;
 124 }
 125
 126 module_init(wgt634u_init);
 127