arch/mips/alchemy/mtx-1/platform.c

   1 /*
   2  * MTX-1 platform devices registration
   3  *
   4  * Copyright (C) 2007-2009, Florian Fainelli <florian@openwrt.org>
   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/leds.h>
  24 #include <linux/gpio.h>
  25 #include <linux/gpio_keys.h>
  26 #include <linux/input.h>
  27 #include <linux/mtd/partitions.h>
  28 #include <linux/mtd/physmap.h>
  29 #include <mtd/mtd-abi.h>
  30
  31 #include <asm/mach-au1x00/au1xxx_eth.h>
  32
  33 static struct gpio_keys_button mtx1_gpio_button[] = {
  34         {
  35                 .gpio = 207,
  36                 .code = BTN_0,
  37                 .desc = "System button",
  38         }
  39 };
  40
  41 static struct gpio_keys_platform_data mtx1_buttons_data = {
  42         .buttons = mtx1_gpio_button,
  43         .nbuttons = ARRAY_SIZE(mtx1_gpio_button),
  44 };
  45
  46 static struct platform_device mtx1_button = {
  47         .name = "gpio-keys",
  48         .id = -1,
  49         .dev = {
  50                 .platform_data = &mtx1_buttons_data,
  51         }
  52 };
  53
  54 static struct resource mtx1_wdt_res[] = {
  55         [0] = {
  56                 .start  = 215,
  57                 .end    = 215,
  58                 .name   = "mtx1-wdt-gpio",
  59                 .flags  = IORESOURCE_IRQ,
  60         }
  61 };
  62
  63 static struct platform_device mtx1_wdt = {
  64         .name = "mtx1-wdt",
  65         .id = 0,
  66         .num_resources = ARRAY_SIZE(mtx1_wdt_res),
  67         .resource = mtx1_wdt_res,
  68 };
  69
  70 static struct gpio_led default_leds[] = {
  71         {
  72                 .name   = "mtx1:green",
  73                 .gpio = 211,
  74         }, {
  75                 .name = "mtx1:red",
  76                 .gpio = 212,
  77         },
  78 };
  79
  80 static struct gpio_led_platform_data mtx1_led_data = {
  81         .num_leds = ARRAY_SIZE(default_leds),
  82         .leds = default_leds,
  83 };
  84
  85 static struct platform_device mtx1_gpio_leds = {
  86         .name = "leds-gpio",
  87         .id = -1,
  88         .dev = {
  89                 .platform_data = &mtx1_led_data,
  90         }
  91 };
  92
  93 static struct mtd_partition mtx1_mtd_partitions[] = {
  94         {
  95                 .name   = "filesystem",
  96                 .size   = 0x01C00000,
  97                 .offset = 0,
  98         },
  99         {
 100                 .name   = "yamon",
 101                 .size   = 0x00100000,
 102                 .offset = MTDPART_OFS_APPEND,
 103                 .mask_flags = MTD_WRITEABLE,
 104         },
 105         {
 106                 .name   = "kernel",
 107                 .size   = 0x002c0000,
 108                 .offset = MTDPART_OFS_APPEND,
 109         },
 110         {
 111                 .name   = "yamon env",
 112                 .size   = 0x00040000,
 113                 .offset = MTDPART_OFS_APPEND,
 114         },
 115 };
 116
 117 static struct physmap_flash_data mtx1_flash_data = {
 118         .width          = 4,
 119         .nr_parts       = 4,
 120         .parts          = mtx1_mtd_partitions,
 121 };
 122
 123 static struct resource mtx1_mtd_resource = {
 124         .start  = 0x1e000000,
 125         .end    = 0x1fffffff,
 126         .flags  = IORESOURCE_MEM,
 127 };
 128
 129 static struct platform_device mtx1_mtd = {
 130         .name           = "physmap-flash",
 131         .dev            = {
 132                 .platform_data  = &mtx1_flash_data,
 133         },
 134         .num_resources  = 1,
 135         .resource       = &mtx1_mtd_resource,
 136 };
 137
 138 static struct resource alchemy_pci_host_res[] = {
 139         [0] = {
 140                 .start  = AU1500_PCI_PHYS_ADDR,
 141                 .end    = AU1500_PCI_PHYS_ADDR + 0xfff,
 142                 .flags  = IORESOURCE_MEM,
 143         },
 144 };
 145
 146 static int mtx1_pci_idsel(unsigned int devsel, int assert)
 147 {
 148         /* This function is only necessary to support a proprietary Cardbus
 149          * adapter on the mtx-1 "singleboard" variant. It triggers a custom
 150          * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals.
 151          */
 152         if (assert && devsel != 0)
 153                 /* Suppress signal to Cardbus */
 154                 alchemy_gpio_set_value(1, 0);   /* set EXT_IO3 OFF */
 155         else
 156                 alchemy_gpio_set_value(1, 1);   /* set EXT_IO3 ON */
 157
 158         udelay(1);
 159         return 1;
 160 }
 161
 162 static const char mtx1_irqtab[][5] = {
 163         [0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */
 164         [1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */
 165         [2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */
 166         [3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */
 167         [4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */
 168         [5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */
 169         [6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */
 170         [7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */
 171 };
 172
 173 static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
 174 {
 175         return mtx1_irqtab[slot][pin];
 176 }
 177
 178 static struct alchemy_pci_platdata mtx1_pci_pd = {
 179         .board_map_irq   = mtx1_map_pci_irq,
 180         .board_pci_idsel = mtx1_pci_idsel,
 181         .pci_cfg_set     = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H |
 182                            PCI_CONFIG_CH |
 183 #if defined(__MIPSEB__)
 184                            PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM,
 185 #else
 186                            0,
 187 #endif
 188 };
 189
 190 static struct platform_device mtx1_pci_host = {
 191         .dev.platform_data = &mtx1_pci_pd,
 192         .name           = "alchemy-pci",
 193         .id             = 0,
 194         .num_resources  = ARRAY_SIZE(alchemy_pci_host_res),
 195         .resource       = alchemy_pci_host_res,
 196 };
 197
 198
 199 static struct __initdata platform_device * mtx1_devs[] = {
 200         &mtx1_pci_host,
 201         &mtx1_gpio_leds,
 202         &mtx1_wdt,
 203         &mtx1_button,
 204         &mtx1_mtd,
 205 };
 206
 207 static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = {
 208         .phy_search_highest_addr        = 1,
 209         .phy1_search_mac0               = 1,
 210 };
 211
 212 static int __init mtx1_register_devices(void)
 213 {
 214         int rc;
 215
 216         au1xxx_override_eth_cfg(0, &mtx1_au1000_eth0_pdata);
 217
 218         rc = gpio_request(mtx1_gpio_button[0].gpio,
 219                                         mtx1_gpio_button[0].desc);
 220         if (rc < 0) {
 221                 printk(KERN_INFO "mtx1: failed to request %d\n",
 222                                         mtx1_gpio_button[0].gpio);
 223                 goto out;
 224         }
 225         gpio_direction_input(mtx1_gpio_button[0].gpio);
 226 out:
 227         return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs));
 228 }
 229
 230 arch_initcall(mtx1_register_devices);