arch/mips/alchemy/gpr/platform.c

   1 /*
   2  * GPR board platform device registration
   3  *
   4  * Copyright (C) 2010 Wolfgang Grandegger <wg@denx.de>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include <linux/init.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/mtd/partitions.h>
  24 #include <linux/mtd/physmap.h>
  25 #include <linux/leds.h>
  26 #include <linux/gpio.h>
  27 #include <linux/i2c.h>
  28 #include <linux/i2c-gpio.h>
  29
  30 #include <asm/mach-au1x00/au1000.h>
  31
  32 /*
  33  * Watchdog
  34  */
  35 static struct resource gpr_wdt_resource[] = {
  36         [0] = {
  37                 .start  = 1,
  38                 .end    = 1,
  39                 .name   = "gpr-adm6320-wdt",
  40                 .flags  = IORESOURCE_IRQ,
  41         }
  42 };
  43
  44 static struct platform_device gpr_wdt_device = {
  45         .name = "adm6320-wdt",
  46         .id = 0,
  47         .num_resources = ARRAY_SIZE(gpr_wdt_resource),
  48         .resource = gpr_wdt_resource,
  49 };
  50
  51 /*
  52  * FLASH
  53  *
  54  * 0x00000000-0x00200000 : "kernel"
  55  * 0x00200000-0x00a00000 : "rootfs"
  56  * 0x01d00000-0x01f00000 : "config"
  57  * 0x01c00000-0x01d00000 : "yamon"
  58  * 0x01d00000-0x01d40000 : "yamon env vars"
  59  * 0x00000000-0x00a00000 : "kernel+rootfs"
  60  */
  61 static struct mtd_partition gpr_mtd_partitions[] = {
  62         {
  63                 .name   = "kernel",
  64                 .size   = 0x00200000,
  65                 .offset = 0,
  66         },
  67         {
  68                 .name   = "rootfs",
  69                 .size   = 0x00800000,
  70                 .offset = MTDPART_OFS_APPEND,
  71                 .mask_flags = MTD_WRITEABLE,
  72         },
  73         {
  74                 .name   = "config",
  75                 .size   = 0x00200000,
  76                 .offset = 0x01d00000,
  77         },
  78         {
  79                 .name   = "yamon",
  80                 .size   = 0x00100000,
  81                 .offset = 0x01c00000,
  82         },
  83         {
  84                 .name   = "yamon env vars",
  85                 .size   = 0x00040000,
  86                 .offset = MTDPART_OFS_APPEND,
  87         },
  88         {
  89                 .name   = "kernel+rootfs",
  90                 .size   = 0x00a00000,
  91                 .offset = 0,
  92         },
  93 };
  94
  95 static struct physmap_flash_data gpr_flash_data = {
  96         .width          = 4,
  97         .nr_parts       = ARRAY_SIZE(gpr_mtd_partitions),
  98         .parts          = gpr_mtd_partitions,
  99 };
 100
 101 static struct resource gpr_mtd_resource = {
 102         .start  = 0x1e000000,
 103         .end    = 0x1fffffff,
 104         .flags  = IORESOURCE_MEM,
 105 };
 106
 107 static struct platform_device gpr_mtd_device = {
 108         .name           = "physmap-flash",
 109         .dev            = {
 110                 .platform_data  = &gpr_flash_data,
 111         },
 112         .num_resources  = 1,
 113         .resource       = &gpr_mtd_resource,
 114 };
 115
 116 /*
 117  * LEDs
 118  */
 119 static struct gpio_led gpr_gpio_leds[] = {
 120         {       /* green */
 121                 .name                   = "gpr:green",
 122                 .gpio                   = 4,
 123                 .active_low             = 1,
 124         },
 125         {       /* red */
 126                 .name                   = "gpr:red",
 127                 .gpio                   = 5,
 128                 .active_low             = 1,
 129         }
 130 };
 131
 132 static struct gpio_led_platform_data gpr_led_data = {
 133         .num_leds = ARRAY_SIZE(gpr_gpio_leds),
 134         .leds = gpr_gpio_leds,
 135 };
 136
 137 static struct platform_device gpr_led_devices = {
 138         .name = "leds-gpio",
 139         .id = -1,
 140         .dev = {
 141                 .platform_data = &gpr_led_data,
 142         }
 143 };
 144
 145 /*
 146  * I2C
 147  */
 148 static struct i2c_gpio_platform_data gpr_i2c_data = {
 149         .sda_pin                = 209,
 150         .sda_is_open_drain      = 1,
 151         .scl_pin                = 210,
 152         .scl_is_open_drain      = 1,
 153         .udelay                 = 2,            /* ~100 kHz */
 154         .timeout                = HZ,
 155  };
 156
 157 static struct platform_device gpr_i2c_device = {
 158         .name                   = "i2c-gpio",
 159         .id                     = -1,
 160         .dev.platform_data      = &gpr_i2c_data,
 161 };
 162
 163 static struct i2c_board_info gpr_i2c_info[] __initdata = {
 164         {
 165                 I2C_BOARD_INFO("lm83", 0x18),
 166                 .type = "lm83"
 167         }
 168 };
 169
 170 static struct platform_device *gpr_devices[] __initdata = {
 171         &gpr_wdt_device,
 172         &gpr_mtd_device,
 173         &gpr_i2c_device,
 174         &gpr_led_devices,
 175 };
 176
 177 static int __init gpr_dev_init(void)
 178 {
 179         i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info));
 180
 181         return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices));
 182 }
 183 device_initcall(gpr_dev_init);