arch/mips/ar7/platform.c

   1 /*
   2  * Copyright (C) 2006,2007 Felix Fietkau <nbd@openwrt.org>
   3  * Copyright (C) 2006,2007 Eugene Konev <ejka@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  */
  19
  20 #include <linux/init.h>
  21 #include <linux/types.h>
  22 #include <linux/module.h>
  23 #include <linux/delay.h>
  24 #include <linux/dma-mapping.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/mtd/physmap.h>
  27 #include <linux/serial.h>
  28 #include <linux/serial_8250.h>
  29 #include <linux/ioport.h>
  30 #include <linux/io.h>
  31 #include <linux/vlynq.h>
  32 #include <linux/leds.h>
  33 #include <linux/string.h>
  34 #include <linux/etherdevice.h>
  35 #include <linux/phy.h>
  36 #include <linux/phy_fixed.h>
  37
  38 #include <asm/addrspace.h>
  39 #include <asm/mach-ar7/ar7.h>
  40 #include <asm/mach-ar7/gpio.h>
  41 #include <asm/mach-ar7/prom.h>
  42
  43 struct plat_vlynq_data {
  44         struct plat_vlynq_ops ops;
  45         int gpio_bit;
  46         int reset_bit;
  47 };
  48
  49
  50 static int vlynq_on(struct vlynq_device *dev)
  51 {
  52         int result;
  53         struct plat_vlynq_data *pdata = dev->dev.platform_data;
  54
  55         result = gpio_request(pdata->gpio_bit, "vlynq");
  56         if (result)
  57                 goto out;
  58
  59         ar7_device_reset(pdata->reset_bit);
  60
  61         result = ar7_gpio_disable(pdata->gpio_bit);
  62         if (result)
  63                 goto out_enabled;
  64
  65         result = ar7_gpio_enable(pdata->gpio_bit);
  66         if (result)
  67                 goto out_enabled;
  68
  69         result = gpio_direction_output(pdata->gpio_bit, 0);
  70         if (result)
  71                 goto out_gpio_enabled;
  72
  73         msleep(50);
  74
  75         gpio_set_value(pdata->gpio_bit, 1);
  76         msleep(50);
  77
  78         return 0;
  79
  80 out_gpio_enabled:
  81         ar7_gpio_disable(pdata->gpio_bit);
  82 out_enabled:
  83         ar7_device_disable(pdata->reset_bit);
  84         gpio_free(pdata->gpio_bit);
  85 out:
  86         return result;
  87 }
  88
  89 static void vlynq_off(struct vlynq_device *dev)
  90 {
  91         struct plat_vlynq_data *pdata = dev->dev.platform_data;
  92         ar7_gpio_disable(pdata->gpio_bit);
  93         gpio_free(pdata->gpio_bit);
  94         ar7_device_disable(pdata->reset_bit);
  95 }
  96
  97 static struct resource physmap_flash_resource = {
  98         .name = "mem",
  99         .flags = IORESOURCE_MEM,
 100         .start = 0x10000000,
 101         .end = 0x107fffff,
 102 };
 103
 104 static struct resource cpmac_low_res[] = {
 105         {
 106                 .name = "regs",
 107                 .flags = IORESOURCE_MEM,
 108                 .start = AR7_REGS_MAC0,
 109                 .end = AR7_REGS_MAC0 + 0x7ff,
 110         },
 111         {
 112                 .name = "irq",
 113                 .flags = IORESOURCE_IRQ,
 114                 .start = 27,
 115                 .end = 27,
 116         },
 117 };
 118
 119 static struct resource cpmac_high_res[] = {
 120         {
 121                 .name = "regs",
 122                 .flags = IORESOURCE_MEM,
 123                 .start = AR7_REGS_MAC1,
 124                 .end = AR7_REGS_MAC1 + 0x7ff,
 125         },
 126         {
 127                 .name = "irq",
 128                 .flags = IORESOURCE_IRQ,
 129                 .start = 41,
 130                 .end = 41,
 131         },
 132 };
 133
 134 static struct resource vlynq_low_res[] = {
 135         {
 136                 .name = "regs",
 137                 .flags = IORESOURCE_MEM,
 138                 .start = AR7_REGS_VLYNQ0,
 139                 .end = AR7_REGS_VLYNQ0 + 0xff,
 140         },
 141         {
 142                 .name = "irq",
 143                 .flags = IORESOURCE_IRQ,
 144                 .start = 29,
 145                 .end = 29,
 146         },
 147         {
 148                 .name = "mem",
 149                 .flags = IORESOURCE_MEM,
 150                 .start = 0x04000000,
 151                 .end = 0x04ffffff,
 152         },
 153         {
 154                 .name = "devirq",
 155                 .flags = IORESOURCE_IRQ,
 156                 .start = 80,
 157                 .end = 111,
 158         },
 159 };
 160
 161 static struct resource vlynq_high_res[] = {
 162         {
 163                 .name = "regs",
 164                 .flags = IORESOURCE_MEM,
 165                 .start = AR7_REGS_VLYNQ1,
 166                 .end = AR7_REGS_VLYNQ1 + 0xff,
 167         },
 168         {
 169                 .name = "irq",
 170                 .flags = IORESOURCE_IRQ,
 171                 .start = 33,
 172                 .end = 33,
 173         },
 174         {
 175                 .name = "mem",
 176                 .flags = IORESOURCE_MEM,
 177                 .start = 0x0c000000,
 178                 .end = 0x0cffffff,
 179         },
 180         {
 181                 .name = "devirq",
 182                 .flags = IORESOURCE_IRQ,
 183                 .start = 112,
 184                 .end = 143,
 185         },
 186 };
 187
 188 static struct resource usb_res[] = {
 189         {
 190                 .name = "regs",
 191                 .flags = IORESOURCE_MEM,
 192                 .start = AR7_REGS_USB,
 193                 .end = AR7_REGS_USB + 0xff,
 194         },
 195         {
 196                 .name = "irq",
 197                 .flags = IORESOURCE_IRQ,
 198                 .start = 32,
 199                 .end = 32,
 200         },
 201         {
 202                 .name = "mem",
 203                 .flags = IORESOURCE_MEM,
 204                 .start = 0x03400000,
 205                 .end = 0x034001fff,
 206         },
 207 };
 208
 209 static struct physmap_flash_data physmap_flash_data = {
 210         .width = 2,
 211 };
 212
 213 static struct fixed_phy_status fixed_phy_status __initdata = {
 214         .link = 1,
 215         .speed = 100,
 216         .duplex = 1,
 217 };
 218
 219 static struct plat_cpmac_data cpmac_low_data = {
 220         .reset_bit = 17,
 221         .power_bit = 20,
 222         .phy_mask = 0x80000000,
 223 };
 224
 225 static struct plat_cpmac_data cpmac_high_data = {
 226         .reset_bit = 21,
 227         .power_bit = 22,
 228         .phy_mask = 0x7fffffff,
 229 };
 230
 231 static struct plat_vlynq_data vlynq_low_data = {
 232         .ops.on = vlynq_on,
 233         .ops.off = vlynq_off,
 234         .reset_bit = 20,
 235         .gpio_bit = 18,
 236 };
 237
 238 static struct plat_vlynq_data vlynq_high_data = {
 239         .ops.on = vlynq_on,
 240         .ops.off = vlynq_off,
 241         .reset_bit = 16,
 242         .gpio_bit = 19,
 243 };
 244
 245 static struct platform_device physmap_flash = {
 246         .id = 0,
 247         .name = "physmap-flash",
 248         .dev.platform_data = &physmap_flash_data,
 249         .resource = &physmap_flash_resource,
 250         .num_resources = 1,
 251 };
 252
 253 static u64 cpmac_dma_mask = DMA_BIT_MASK(32);
 254 static struct platform_device cpmac_low = {
 255         .id = 0,
 256         .name = "cpmac",
 257         .dev = {
 258                 .dma_mask = &cpmac_dma_mask,
 259                 .coherent_dma_mask = DMA_BIT_MASK(32),
 260                 .platform_data = &cpmac_low_data,
 261         },
 262         .resource = cpmac_low_res,
 263         .num_resources = ARRAY_SIZE(cpmac_low_res),
 264 };
 265
 266 static struct platform_device cpmac_high = {
 267         .id = 1,
 268         .name = "cpmac",
 269         .dev = {
 270                 .dma_mask = &cpmac_dma_mask,
 271                 .coherent_dma_mask = DMA_BIT_MASK(32),
 272                 .platform_data = &cpmac_high_data,
 273         },
 274         .resource = cpmac_high_res,
 275         .num_resources = ARRAY_SIZE(cpmac_high_res),
 276 };
 277
 278 static struct platform_device vlynq_low = {
 279         .id = 0,
 280         .name = "vlynq",
 281         .dev.platform_data = &vlynq_low_data,
 282         .resource = vlynq_low_res,
 283         .num_resources = ARRAY_SIZE(vlynq_low_res),
 284 };
 285
 286 static struct platform_device vlynq_high = {
 287         .id = 1,
 288         .name = "vlynq",
 289         .dev.platform_data = &vlynq_high_data,
 290         .resource = vlynq_high_res,
 291         .num_resources = ARRAY_SIZE(vlynq_high_res),
 292 };
 293
 294
 295 static struct gpio_led default_leds[] = {
 296         {
 297                 .name = "status",
 298                 .gpio = 8,
 299                 .active_low = 1,
 300         },
 301 };
 302
 303 static struct gpio_led dsl502t_leds[] = {
 304         {
 305                 .name = "status",
 306                 .gpio = 9,
 307                 .active_low = 1,
 308         },
 309         {
 310                 .name = "ethernet",
 311                 .gpio = 7,
 312                 .active_low = 1,
 313         },
 314         {
 315                 .name = "usb",
 316                 .gpio = 12,
 317                 .active_low = 1,
 318         },
 319 };
 320
 321 static struct gpio_led dg834g_leds[] = {
 322         {
 323                 .name = "ppp",
 324                 .gpio = 6,
 325                 .active_low = 1,
 326         },
 327         {
 328                 .name = "status",
 329                 .gpio = 7,
 330                 .active_low = 1,
 331         },
 332         {
 333                 .name = "adsl",
 334                 .gpio = 8,
 335                 .active_low = 1,
 336         },
 337         {
 338                 .name = "wifi",
 339                 .gpio = 12,
 340                 .active_low = 1,
 341         },
 342         {
 343                 .name = "power",
 344                 .gpio = 14,
 345                 .active_low = 1,
 346                 .default_trigger = "default-on",
 347         },
 348 };
 349
 350 static struct gpio_led fb_sl_leds[] = {
 351         {
 352                 .name = "1",
 353                 .gpio = 7,
 354         },
 355         {
 356                 .name = "2",
 357                 .gpio = 13,
 358                 .active_low = 1,
 359         },
 360         {
 361                 .name = "3",
 362                 .gpio = 10,
 363                 .active_low = 1,
 364         },
 365         {
 366                 .name = "4",
 367                 .gpio = 12,
 368                 .active_low = 1,
 369         },
 370         {
 371                 .name = "5",
 372                 .gpio = 9,
 373                 .active_low = 1,
 374         },
 375 };
 376
 377 static struct gpio_led fb_fon_leds[] = {
 378         {
 379                 .name = "1",
 380                 .gpio = 8,
 381         },
 382         {
 383                 .name = "2",
 384                 .gpio = 3,
 385                 .active_low = 1,
 386         },
 387         {
 388                 .name = "3",
 389                 .gpio = 5,
 390         },
 391         {
 392                 .name = "4",
 393                 .gpio = 4,
 394                 .active_low = 1,
 395         },
 396         {
 397                 .name = "5",
 398                 .gpio = 11,
 399                 .active_low = 1,
 400         },
 401 };
 402
 403 static struct gpio_led_platform_data ar7_led_data;
 404
 405 static struct platform_device ar7_gpio_leds = {
 406         .name = "leds-gpio",
 407         .id = -1,
 408         .dev = {
 409                 .platform_data = &ar7_led_data,
 410         }
 411 };
 412
 413 static struct platform_device ar7_udc = {
 414         .id = -1,
 415         .name = "ar7_udc",
 416         .resource = usb_res,
 417         .num_resources = ARRAY_SIZE(usb_res),
 418 };
 419
 420 static struct resource ar7_wdt_res = {
 421         .name = "regs",
 422         .start = -1, /* Filled at runtime */
 423         .end = -1, /* Filled at runtime */
 424         .flags = IORESOURCE_MEM,
 425 };
 426
 427 static struct platform_device ar7_wdt = {
 428         .id = -1,
 429         .name  = "ar7_wdt",
 430         .resource = &ar7_wdt_res,
 431         .num_resources = 1,
 432 };
 433
 434 static inline unsigned char char2hex(char h)
 435 {
 436         switch (h) {
 437         case '0': case '1': case '2': case '3': case '4':
 438         case '5': case '6': case '7': case '8': case '9':
 439                 return h - '0';
 440         case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
 441                 return h - 'A' + 10;
 442         case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
 443                 return h - 'a' + 10;
 444         default:
 445                 return 0;
 446         }
 447 }
 448
 449 static void cpmac_get_mac(int instance, unsigned char *dev_addr)
 450 {
 451         int i;
 452         char name[5], default_mac[ETH_ALEN], *mac;
 453
 454         mac = NULL;
 455         sprintf(name, "mac%c", 'a' + instance);
 456         mac = prom_getenv(name);
 457         if (!mac) {
 458                 sprintf(name, "mac%c", 'a');
 459                 mac = prom_getenv(name);
 460         }
 461         if (!mac) {
 462                 random_ether_addr(default_mac);
 463                 mac = default_mac;
 464         }
 465         for (i = 0; i < 6; i++)
 466                 dev_addr[i] = (char2hex(mac[i * 3]) << 4) +
 467                         char2hex(mac[i * 3 + 1]);
 468 }
 469
 470 static void __init detect_leds(void)
 471 {
 472         char *prid, *usb_prod;
 473
 474         /* Default LEDs */
 475         ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
 476         ar7_led_data.leds = default_leds;
 477
 478         /* FIXME: the whole thing is unreliable */
 479         prid = prom_getenv("ProductID");
 480         usb_prod = prom_getenv("usb_prod");
 481
 482         /* If we can't get the product id from PROM, use the default LEDs */
 483         if (!prid)
 484                 return;
 485
 486         if (strstr(prid, "Fritz_Box_FON")) {
 487                 ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
 488                 ar7_led_data.leds = fb_fon_leds;
 489         } else if (strstr(prid, "Fritz_Box_")) {
 490                 ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
 491                 ar7_led_data.leds = fb_sl_leds;
 492         } else if ((!strcmp(prid, "AR7RD") || !strcmp(prid, "AR7DB"))
 493                 && usb_prod != NULL && strstr(usb_prod, "DSL-502T")) {
 494                 ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds);
 495                 ar7_led_data.leds = dsl502t_leds;
 496         } else if (strstr(prid, "DG834")) {
 497                 ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds);
 498                 ar7_led_data.leds = dg834g_leds;
 499         }
 500 }
 501
 502 static int __init ar7_register_devices(void)
 503 {
 504         u16 chip_id;
 505         int res;
 506 #ifdef CONFIG_SERIAL_8250
 507         static struct uart_port uart_port[2];
 508
 509         memset(uart_port, 0, sizeof(struct uart_port) * 2);
 510
 511         uart_port[0].type = PORT_16550A;
 512         uart_port[0].line = 0;
 513         uart_port[0].irq = AR7_IRQ_UART0;
 514         uart_port[0].uartclk = ar7_bus_freq() / 2;
 515         uart_port[0].iotype = UPIO_MEM32;
 516         uart_port[0].mapbase = AR7_REGS_UART0;
 517         uart_port[0].membase = ioremap(uart_port[0].mapbase, 256);
 518         uart_port[0].regshift = 2;
 519         res = early_serial_setup(&uart_port[0]);
 520         if (res)
 521                 return res;
 522
 523
 524         /* Only TNETD73xx have a second serial port */
 525         if (ar7_has_second_uart()) {
 526                 uart_port[1].type = PORT_16550A;
 527                 uart_port[1].line = 1;
 528                 uart_port[1].irq = AR7_IRQ_UART1;
 529                 uart_port[1].uartclk = ar7_bus_freq() / 2;
 530                 uart_port[1].iotype = UPIO_MEM32;
 531                 uart_port[1].mapbase = UR8_REGS_UART1;
 532                 uart_port[1].membase = ioremap(uart_port[1].mapbase, 256);
 533                 uart_port[1].regshift = 2;
 534                 res = early_serial_setup(&uart_port[1]);
 535                 if (res)
 536                         return res;
 537         }
 538 #endif /* CONFIG_SERIAL_8250 */
 539         res = platform_device_register(&physmap_flash);
 540         if (res)
 541                 return res;
 542
 543         ar7_device_disable(vlynq_low_data.reset_bit);
 544         res = platform_device_register(&vlynq_low);
 545         if (res)
 546                 return res;
 547
 548         if (ar7_has_high_vlynq()) {
 549                 ar7_device_disable(vlynq_high_data.reset_bit);
 550                 res = platform_device_register(&vlynq_high);
 551                 if (res)
 552                         return res;
 553         }
 554
 555         if (ar7_has_high_cpmac()) {
 556                 res = fixed_phy_add(PHY_POLL, cpmac_high.id, &fixed_phy_status);
 557                 if (res && res != -ENODEV)
 558                         return res;
 559                 cpmac_get_mac(1, cpmac_high_data.dev_addr);
 560                 res = platform_device_register(&cpmac_high);
 561                 if (res)
 562                         return res;
 563         } else {
 564                 cpmac_low_data.phy_mask = 0xffffffff;
 565         }
 566
 567         res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status);
 568         if (res && res != -ENODEV)
 569                 return res;
 570
 571         cpmac_get_mac(0, cpmac_low_data.dev_addr);
 572         res = platform_device_register(&cpmac_low);
 573         if (res)
 574                 return res;
 575
 576         detect_leds();
 577         res = platform_device_register(&ar7_gpio_leds);
 578         if (res)
 579                 return res;
 580
 581         res = platform_device_register(&ar7_udc);
 582
 583         chip_id = ar7_chip_id();
 584         switch (chip_id) {
 585         case AR7_CHIP_7100:
 586         case AR7_CHIP_7200:
 587                 ar7_wdt_res.start = AR7_REGS_WDT;
 588                 break;
 589         case AR7_CHIP_7300:
 590                 ar7_wdt_res.start = UR8_REGS_WDT;
 591                 break;
 592         default:
 593                 break;
 594         }
 595
 596         ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
 597
 598         res = platform_device_register(&ar7_wdt);
 599
 600         return res;
 601 }
 602 arch_initcall(ar7_register_devices);