arch/mips/rb532/devices.c

   1 /*
   2  *  RouterBoard 500 Platform devices
   3  *
   4  *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
   5  *  Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  *  GNU General Public License for more details.
  16  */
  17 #include <linux/kernel.h>
  18 #include <linux/init.h>
  19 #include <linux/ctype.h>
  20 #include <linux/string.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/mtd/nand.h>
  23 #include <linux/mtd/mtd.h>
  24 #include <linux/mtd/partitions.h>
  25 #include <linux/gpio_keys.h>
  26 #include <linux/input.h>
  27
  28 #include <asm/bootinfo.h>
  29
  30 #include <asm/mach-rc32434/rc32434.h>
  31 #include <asm/mach-rc32434/dma.h>
  32 #include <asm/mach-rc32434/dma_v.h>
  33 #include <asm/mach-rc32434/eth.h>
  34 #include <asm/mach-rc32434/rb.h>
  35 #include <asm/mach-rc32434/integ.h>
  36 #include <asm/mach-rc32434/gpio.h>
  37 #include <asm/mach-rc32434/irq.h>
  38
  39 #define ETH0_RX_DMA_ADDR  (DMA0_BASE_ADDR + 0 * DMA_CHAN_OFFSET)
  40 #define ETH0_TX_DMA_ADDR  (DMA0_BASE_ADDR + 1 * DMA_CHAN_OFFSET)
  41
  42 static struct resource korina_dev0_res[] = {
  43         {
  44                 .name = "korina_regs",
  45                 .start = ETH0_BASE_ADDR,
  46                 .end = ETH0_BASE_ADDR + sizeof(struct eth_regs),
  47                 .flags = IORESOURCE_MEM,
  48          }, {
  49                 .name = "korina_rx",
  50                 .start = ETH0_DMA_RX_IRQ,
  51                 .end = ETH0_DMA_RX_IRQ,
  52                 .flags = IORESOURCE_IRQ
  53         }, {
  54                 .name = "korina_tx",
  55                 .start = ETH0_DMA_TX_IRQ,
  56                 .end = ETH0_DMA_TX_IRQ,
  57                 .flags = IORESOURCE_IRQ
  58         }, {
  59                 .name = "korina_ovr",
  60                 .start = ETH0_RX_OVR_IRQ,
  61                 .end = ETH0_RX_OVR_IRQ,
  62                 .flags = IORESOURCE_IRQ
  63         }, {
  64                 .name = "korina_und",
  65                 .start = ETH0_TX_UND_IRQ,
  66                 .end = ETH0_TX_UND_IRQ,
  67                 .flags = IORESOURCE_IRQ
  68         }, {
  69                 .name = "korina_dma_rx",
  70                 .start = ETH0_RX_DMA_ADDR,
  71                 .end = ETH0_RX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
  72                 .flags = IORESOURCE_MEM,
  73          }, {
  74                 .name = "korina_dma_tx",
  75                 .start = ETH0_TX_DMA_ADDR,
  76                 .end = ETH0_TX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
  77                 .flags = IORESOURCE_MEM,
  78          }
  79 };
  80
  81 static struct korina_device korina_dev0_data = {
  82         .name = "korina0",
  83         .mac = {0xde, 0xca, 0xff, 0xc0, 0xff, 0xee}
  84 };
  85
  86 static struct platform_device korina_dev0 = {
  87         .id = -1,
  88         .name = "korina",
  89         .dev.platform_data = &korina_dev0_data,
  90         .resource = korina_dev0_res,
  91         .num_resources = ARRAY_SIZE(korina_dev0_res),
  92 };
  93
  94 static struct resource cf_slot0_res[] = {
  95         {
  96                 .name = "cf_membase",
  97                 .flags = IORESOURCE_MEM
  98         }, {
  99                 .name = "cf_irq",
 100                 .start = (8 + 4 * 32 + CF_GPIO_NUM),    /* 149 */
 101                 .end = (8 + 4 * 32 + CF_GPIO_NUM),
 102                 .flags = IORESOURCE_IRQ
 103         }
 104 };
 105
 106 static struct cf_device cf_slot0_data = {
 107         .gpio_pin = CF_GPIO_NUM
 108 };
 109
 110 static struct platform_device cf_slot0 = {
 111         .id = -1,
 112         .name = "pata-rb532-cf",
 113         .dev.platform_data = &cf_slot0_data,
 114         .resource = cf_slot0_res,
 115         .num_resources = ARRAY_SIZE(cf_slot0_res),
 116 };
 117
 118 /* Resources and device for NAND */
 119 static int rb532_dev_ready(struct mtd_info *mtd)
 120 {
 121         return gpio_get_value(GPIO_RDY);
 122 }
 123
 124 static void rb532_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
 125 {
 126         struct nand_chip *chip = mtd->priv;
 127         unsigned char orbits, nandbits;
 128
 129         if (ctrl & NAND_CTRL_CHANGE) {
 130                 orbits = (ctrl & NAND_CLE) << 1;
 131                 orbits |= (ctrl & NAND_ALE) >> 1;
 132
 133                 nandbits = (~ctrl & NAND_CLE) << 1;
 134                 nandbits |= (~ctrl & NAND_ALE) >> 1;
 135
 136                 set_latch_u5(orbits, nandbits);
 137         }
 138         if (cmd != NAND_CMD_NONE)
 139                 writeb(cmd, chip->IO_ADDR_W);
 140 }
 141
 142 static struct resource nand_slot0_res[] = {
 143         [0] = {
 144                 .name = "nand_membase",
 145                 .flags = IORESOURCE_MEM
 146         }
 147 };
 148
 149 static struct platform_nand_data rb532_nand_data = {
 150         .ctrl.dev_ready = rb532_dev_ready,
 151         .ctrl.cmd_ctrl  = rb532_cmd_ctrl,
 152 };
 153
 154 static struct platform_device nand_slot0 = {
 155         .name = "gen_nand",
 156         .id = -1,
 157         .resource = nand_slot0_res,
 158         .num_resources = ARRAY_SIZE(nand_slot0_res),
 159         .dev.platform_data = &rb532_nand_data,
 160 };
 161
 162 static struct mtd_partition rb532_partition_info[] = {
 163         {
 164                 .name = "Routerboard NAND boot",
 165                 .offset = 0,
 166                 .size = 4 * 1024 * 1024,
 167         }, {
 168                 .name = "rootfs",
 169                 .offset = MTDPART_OFS_NXTBLK,
 170                 .size = MTDPART_SIZ_FULL,
 171         }
 172 };
 173
 174 static struct platform_device rb532_led = {
 175         .name = "rb532-led",
 176         .id = -1,
 177 };
 178
 179 static struct gpio_keys_button rb532_gpio_btn[] = {
 180         {
 181                 .gpio = 1,
 182                 .code = BTN_0,
 183                 .desc = "S1",
 184                 .active_low = 1,
 185         }
 186 };
 187
 188 static struct gpio_keys_platform_data rb532_gpio_btn_data = {
 189         .buttons = rb532_gpio_btn,
 190         .nbuttons = ARRAY_SIZE(rb532_gpio_btn),
 191 };
 192
 193 static struct platform_device rb532_button = {
 194         .name   = "gpio-keys",
 195         .id     = -1,
 196         .dev    = {
 197                 .platform_data = &rb532_gpio_btn_data,
 198         }
 199 };
 200
 201 static struct resource rb532_wdt_res[] = {
 202         {
 203                 .name = "rb532_wdt_res",
 204                 .start = INTEG0_BASE_ADDR,
 205                 .end = INTEG0_BASE_ADDR + sizeof(struct integ),
 206                 .flags = IORESOURCE_MEM,
 207         }
 208 };
 209
 210 static struct platform_device rb532_wdt = {
 211         .name           = "rc32434_wdt",
 212         .id             = -1,
 213         .resource       = rb532_wdt_res,
 214         .num_resources  = ARRAY_SIZE(rb532_wdt_res),
 215 };
 216
 217 static struct platform_device *rb532_devs[] = {
 218         &korina_dev0,
 219         &nand_slot0,
 220         &cf_slot0,
 221         &rb532_led,
 222         &rb532_button,
 223         &rb532_wdt
 224 };
 225
 226 static void __init parse_mac_addr(char *macstr)
 227 {
 228         int i, j;
 229         unsigned char result, value;
 230
 231         for (i = 0; i < 6; i++) {
 232                 result = 0;
 233
 234                 if (i != 5 && *(macstr + 2) != ':')
 235                         return;
 236
 237                 for (j = 0; j < 2; j++) {
 238                         if (isxdigit(*macstr)
 239                             && (value =
 240                                 isdigit(*macstr) ? *macstr -
 241                                 '0' : toupper(*macstr) - 'A' + 10) < 16) {
 242                                 result = result * 16 + value;
 243                                 macstr++;
 244                         } else
 245                                 return;
 246                 }
 247
 248                 macstr++;
 249                 korina_dev0_data.mac[i] = result;
 250         }
 251 }
 252
 253
 254 /* NAND definitions */
 255 #define NAND_CHIP_DELAY 25
 256
 257 static void __init rb532_nand_setup(void)
 258 {
 259         switch (mips_machtype) {
 260         case MACH_MIKROTIK_RB532A:
 261                 set_latch_u5(LO_FOFF | LO_CEX,
 262                                 LO_ULED | LO_ALE | LO_CLE | LO_WPX);
 263                 break;
 264         default:
 265                 set_latch_u5(LO_WPX | LO_FOFF | LO_CEX,
 266                                 LO_ULED | LO_ALE | LO_CLE);
 267                 break;
 268         }
 269
 270         /* Setup NAND specific settings */
 271         rb532_nand_data.chip.nr_chips = 1;
 272         rb532_nand_data.chip.nr_partitions = ARRAY_SIZE(rb532_partition_info);
 273         rb532_nand_data.chip.partitions = rb532_partition_info;
 274         rb532_nand_data.chip.chip_delay = NAND_CHIP_DELAY;
 275         rb532_nand_data.chip.options = NAND_NO_AUTOINCR;
 276 }
 277
 278
 279 static int __init plat_setup_devices(void)
 280 {
 281         /* Look for the CF card reader */
 282         if (!readl(IDT434_REG_BASE + DEV1MASK))
 283                 rb532_devs[2] = NULL;   /* disable cf_slot0 at index 2 */
 284         else {
 285                 cf_slot0_res[0].start =
 286                     readl(IDT434_REG_BASE + DEV1BASE);
 287                 cf_slot0_res[0].end = cf_slot0_res[0].start + 0x1000;
 288         }
 289
 290         /* Read the NAND resources from the device controller */
 291         nand_slot0_res[0].start = readl(IDT434_REG_BASE + DEV2BASE);
 292         nand_slot0_res[0].end = nand_slot0_res[0].start + 0x1000;
 293
 294         /* Initialise the NAND device */
 295         rb532_nand_setup();
 296
 297         return platform_add_devices(rb532_devs, ARRAY_SIZE(rb532_devs));
 298 }
 299
 300 static int __init setup_kmac(char *s)
 301 {
 302         printk(KERN_INFO "korina mac = %s\n", s);
 303         parse_mac_addr(s);
 304         return 0;
 305 }
 306
 307 __setup("kmac=", setup_kmac);
 308
 309 arch_initcall(plat_setup_devices);