target/linux/ar7/files/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/autoconf.h>
  21 #include <linux/init.h>
  22 #include <linux/types.h>
  23 #include <linux/module.h>
  24 #include <linux/delay.h>
  25 #include <linux/dma-mapping.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/mtd/physmap.h>
  28 #include <linux/serial.h>
  29 #include <linux/serial_8250.h>
  30 #include <linux/ioport.h>
  31 #include <linux/io.h>
  32 #include <linux/version.h>
  33 #include <linux/vlynq.h>
  34 #include <linux/leds.h>
  35 #include <linux/string.h>
  36
  37 #include <asm/addrspace.h>
  38 #include <asm/ar7/ar7.h>
  39 #include <asm/ar7/gpio.h>
  40 #include <asm/ar7/prom.h>
  41
  42 struct plat_vlynq_data {
  43         struct plat_vlynq_ops ops;
  44         int gpio_bit;
  45         int reset_bit;
  46 };
  47
  48
  49 static int vlynq_on(struct vlynq_device *dev)
  50 {
  51         int result;
  52         struct plat_vlynq_data *pdata = dev->dev.platform_data;
  53
  54         if ((result = gpio_request(pdata->gpio_bit, "vlynq")))
  55                 goto out;
  56
  57         ar7_device_reset(pdata->reset_bit);
  58
  59         if ((result = ar7_gpio_disable(pdata->gpio_bit)))
  60                 goto out_enabled;
  61
  62         if ((result = ar7_gpio_enable(pdata->gpio_bit)))
  63                 goto out_enabled;
  64
  65         if ((result = gpio_direction_output(pdata->gpio_bit, 0)))
  66                 goto out_gpio_enabled;
  67
  68         mdelay(50);
  69
  70         gpio_set_value(pdata->gpio_bit, 1);
  71         mdelay(50);
  72
  73         return 0;
  74
  75 out_gpio_enabled:
  76         ar7_gpio_disable(pdata->gpio_bit);
  77 out_enabled:
  78         ar7_device_disable(pdata->reset_bit);
  79         gpio_free(pdata->gpio_bit);
  80 out:
  81         return result;
  82 }
  83
  84 static void vlynq_off(struct vlynq_device *dev)
  85 {
  86         struct plat_vlynq_data *pdata = dev->dev.platform_data;
  87         ar7_gpio_disable(pdata->gpio_bit);
  88         gpio_free(pdata->gpio_bit);
  89         ar7_device_disable(pdata->reset_bit);
  90 }
  91
  92 static struct resource physmap_flash_resource = {
  93         .name = "mem",
  94         .flags = IORESOURCE_MEM,
  95         .start = 0x10000000,
  96         .end = 0x107fffff,
  97 };
  98
  99 static struct resource cpmac_low_res[] = {
 100         {
 101                 .name = "regs",
 102                 .flags = IORESOURCE_MEM,
 103                 .start = AR7_REGS_MAC0,
 104                 .end = AR7_REGS_MAC0 + 0x7ff,
 105         },
 106         {
 107                 .name = "irq",
 108                 .flags = IORESOURCE_IRQ,
 109                 .start = 27,
 110                 .end = 27,
 111         },
 112 };
 113
 114 static struct resource cpmac_high_res[] = {
 115         {
 116                 .name = "regs",
 117                 .flags = IORESOURCE_MEM,
 118                 .start = AR7_REGS_MAC1,
 119                 .end = AR7_REGS_MAC1 + 0x7ff,
 120         },
 121         {
 122                 .name = "irq",
 123                 .flags = IORESOURCE_IRQ,
 124                 .start = 41,
 125                 .end = 41,
 126         },
 127 };
 128
 129 static struct resource vlynq_low_res[] = {
 130         {
 131                 .name = "regs",
 132                 .flags = IORESOURCE_MEM,
 133                 .start = AR7_REGS_VLYNQ0,
 134                 .end = AR7_REGS_VLYNQ0 + 0xff,
 135         },
 136         {
 137                 .name = "irq",
 138                 .flags = IORESOURCE_IRQ,
 139                 .start = 29,
 140                 .end = 29,
 141         },
 142         {
 143                 .name = "mem",
 144                 .flags = IORESOURCE_MEM,
 145                 .start = 0x04000000,
 146                 .end = 0x04ffffff,
 147         },
 148         {
 149                 .name = "devirq",
 150                 .flags = IORESOURCE_IRQ,
 151                 .start = 80,
 152                 .end = 111,
 153         },
 154 };
 155
 156 static struct resource vlynq_high_res[] = {
 157         {
 158                 .name = "regs",
 159                 .flags = IORESOURCE_MEM,
 160                 .start = AR7_REGS_VLYNQ1,
 161                 .end = AR7_REGS_VLYNQ1 + 0xff,
 162         },
 163         {
 164                 .name = "irq",
 165                 .flags = IORESOURCE_IRQ,
 166                 .start = 33,
 167                 .end = 33,
 168         },
 169         {
 170                 .name = "mem",
 171                 .flags = IORESOURCE_MEM,
 172                 .start = 0x0c000000,
 173                 .end = 0x0cffffff,
 174         },
 175         {
 176                 .name = "devirq",
 177                 .flags = IORESOURCE_IRQ,
 178                 .start = 112,
 179                 .end = 143,
 180         },
 181 };
 182
 183 static struct resource usb_res[] = {
 184         {
 185                 .name = "regs",
 186                 .flags = IORESOURCE_MEM,
 187                 .start = AR7_REGS_USB,
 188                 .end = AR7_REGS_USB + 0xff,
 189         },
 190         {
 191                 .name = "irq",
 192                 .flags = IORESOURCE_IRQ,
 193                 .start = 32,
 194                 .end = 32,
 195         },
 196         {
 197                 .name = "mem",
 198                 .flags = IORESOURCE_MEM,
 199                 .start = 0x03400000,
 200                 .end = 0x034001fff,
 201         },
 202 };
 203
 204 static struct physmap_flash_data physmap_flash_data = {
 205         .width = 2,
 206 };
 207
 208 static struct plat_cpmac_data cpmac_low_data = {
 209         .reset_bit = 17,
 210         .power_bit = 20,
 211         .phy_mask = 0x80000000,
 212 };
 213
 214 static struct plat_cpmac_data cpmac_high_data = {
 215         .reset_bit = 21,
 216         .power_bit = 22,
 217         .phy_mask = 0x7fffffff,
 218 };
 219
 220 static struct plat_vlynq_data vlynq_low_data = {
 221         .ops.on = vlynq_on,
 222         .ops.off = vlynq_off,
 223         .reset_bit = 20,
 224         .gpio_bit = 18,
 225 };
 226
 227 static struct plat_vlynq_data vlynq_high_data = {
 228         .ops.on = vlynq_on,
 229         .ops.off = vlynq_off,
 230         .reset_bit = 16,
 231         .gpio_bit = 19,
 232 };
 233
 234 static struct platform_device physmap_flash = {
 235         .id = 0,
 236         .name = "physmap-flash",
 237         .dev.platform_data = &physmap_flash_data,
 238         .resource = &physmap_flash_resource,
 239         .num_resources = 1,
 240 };
 241
 242 static u64 cpmac_dma_mask = DMA_32BIT_MASK;
 243 static struct platform_device cpmac_low = {
 244         .id = 0,
 245         .name = "cpmac",
 246         .dev = {
 247                 .dma_mask = &cpmac_dma_mask,
 248                 .coherent_dma_mask = DMA_32BIT_MASK,
 249                 .platform_data = &cpmac_low_data,
 250         },
 251         .resource = cpmac_low_res,
 252         .num_resources = ARRAY_SIZE(cpmac_low_res),
 253 };
 254
 255 static struct platform_device cpmac_high = {
 256         .id = 1,
 257         .name = "cpmac",
 258         .dev = {
 259                 .dma_mask = &cpmac_dma_mask,
 260                 .coherent_dma_mask = DMA_32BIT_MASK,
 261                 .platform_data = &cpmac_high_data,
 262         },
 263         .resource = cpmac_high_res,
 264         .num_resources = ARRAY_SIZE(cpmac_high_res),
 265 };
 266
 267 static struct platform_device vlynq_low = {
 268         .id = 0,
 269         .name = "vlynq",
 270         .dev.platform_data = &vlynq_low_data,
 271         .resource = vlynq_low_res,
 272         .num_resources = ARRAY_SIZE(vlynq_low_res),
 273 };
 274
 275 static struct platform_device vlynq_high = {
 276         .id = 1,
 277         .name = "vlynq",
 278         .dev.platform_data = &vlynq_high_data,
 279         .resource = vlynq_high_res,
 280         .num_resources = ARRAY_SIZE(vlynq_high_res),
 281 };
 282
 283
 284 /* This is proper way to define uart ports, but they are then detected
 285  * as xscale and, obviously, don't work...
 286  */
 287 #if !defined(CONFIG_SERIAL_8250)
 288
 289 static struct plat_serial8250_port uart0_data = {
 290         .mapbase = AR7_REGS_UART0,
 291         .irq = AR7_IRQ_UART0,
 292         .regshift = 2,
 293         .iotype = UPIO_MEM,
 294         .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
 295 };
 296
 297 static struct plat_serial8250_port uart1_data = {
 298         .mapbase = UR8_REGS_UART1,
 299         .irq = AR7_IRQ_UART1,
 300         .regshift = 2,
 301         .iotype = UPIO_MEM,
 302         .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
 303 };
 304
 305 static struct plat_serial8250_port uart_data[] = {
 306         uart0_data,
 307         uart1_data,
 308         { .flags = 0 }
 309 };
 310
 311 static struct plat_serial8250_port uart_data_single[] = {
 312         uart0_data,
 313         { .flags = 0 }
 314 };
 315
 316 static struct platform_device uart = {
 317         .id = 0,
 318         .name = "serial8250",
 319         .dev.platform_data = uart_data_single
 320 };
 321 #endif
 322
 323 static struct gpio_led default_leds[] = {
 324         { .name = "status", .gpio = 8, .active_low = 1, },
 325 };
 326
 327 static struct gpio_led dsl502t_leds[] = {
 328         { .name = "status", .gpio = 9, .active_low = 1, },
 329         { .name = "ethernet", .gpio = 7, .active_low = 1, },
 330         { .name = "usb", .gpio = 12, .active_low = 1, },
 331 };
 332
 333 static struct gpio_led dg834g_leds[] = {
 334         { .name = "ppp", .gpio = 6, .active_low = 1, },
 335         { .name = "status", .gpio = 7, .active_low = 1, },
 336         { .name = "adsl", .gpio = 8, .active_low = 1, },
 337         { .name = "wifi", .gpio = 12, .active_low = 1, },
 338         { .name = "power", .gpio = 14, .active_low = 1, .default_trigger = "default-on", },
 339 };
 340
 341 static struct gpio_led fb_sl_leds[] = {
 342         { .name = "1", .gpio = 7, },
 343         { .name = "2", .gpio = 13, .active_low = 1, },
 344         { .name = "3", .gpio = 10, .active_low = 1, },
 345         { .name = "4", .gpio = 12, .active_low = 1, },
 346         { .name = "5", .gpio = 9, .active_low = 1, },
 347 };
 348
 349 static struct gpio_led fb_fon_leds[] = {
 350         { .name = "1", .gpio = 8, },
 351         { .name = "2", .gpio = 3, .active_low = 1, },
 352         { .name = "3", .gpio = 5, },
 353         { .name = "4", .gpio = 4, .active_low = 1, },
 354         { .name = "5", .gpio = 11, .active_low = 1, },
 355 };
 356
 357 static struct gpio_led_platform_data ar7_led_data;
 358
 359 static struct platform_device ar7_gpio_leds = {
 360         .name = "leds-gpio",
 361         .id = -1,
 362         .dev = {
 363                 .platform_data = &ar7_led_data,
 364         }
 365 };
 366
 367 static struct platform_device ar7_udc = {
 368         .id = -1,
 369         .name = "ar7_udc",
 370         .resource = usb_res,
 371         .num_resources = ARRAY_SIZE(usb_res),
 372 };
 373
 374 static inline unsigned char char2hex(char h)
 375 {
 376         switch (h) {
 377         case '0': case '1': case '2': case '3': case '4':
 378         case '5': case '6': case '7': case '8': case '9':
 379                 return h - '0';
 380         case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
 381                 return h - 'A' + 10;
 382         case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
 383                 return h - 'a' + 10;
 384         default:
 385                 return 0;
 386         }
 387 }
 388
 389 static void cpmac_get_mac(int instance, unsigned char *dev_addr)
 390 {
 391         int i;
 392         char name[5], default_mac[] = "00:00:00:12:34:56", *mac;
 393
 394         mac = NULL;
 395         sprintf(name, "mac%c", 'a' + instance);
 396         mac = prom_getenv(name);
 397         if (!mac) {
 398                 sprintf(name, "mac%c", 'a');
 399                 mac = prom_getenv(name);
 400         }
 401         if (!mac)
 402                 mac = default_mac;
 403         for (i = 0; i < 6; i++)
 404                 dev_addr[i] = (char2hex(mac[i * 3]) << 4) +
 405                         char2hex(mac[i * 3 + 1]);
 406 }
 407
 408 static void __init detect_leds(void)
 409 {
 410         char *prId, *usb_prod;
 411
 412         /* Default LEDs */
 413         ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
 414         ar7_led_data.leds = default_leds;
 415
 416         /* FIXME: the whole thing is unreliable */
 417         prId = prom_getenv("ProductID");
 418         usb_prod = prom_getenv("usb_prod");
 419
 420         /* If we can't get the product id from PROM, use the default LEDs */
 421         if (!prId)
 422                 return;
 423
 424         if (strstr(prId, "Fritz_Box_FON")) {
 425                 ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
 426                 ar7_led_data.leds = fb_fon_leds;
 427         } else if (strstr(prId, "Fritz_Box_")) {
 428                 ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
 429                 ar7_led_data.leds = fb_sl_leds;
 430         } else if ((!strcmp(prId, "AR7RD") || !strcmp(prId, "AR7DB")) && usb_prod != NULL && strstr(usb_prod, "DSL-502T")) {
 431                 ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds);
 432                 ar7_led_data.leds = dsl502t_leds;
 433         } else if (strstr(prId, "DG834")) {
 434                 ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds);
 435                 ar7_led_data.leds = dg834g_leds;
 436         }
 437 }
 438
 439 static int __init ar7_register_devices(void)
 440 {
 441         int res;
 442
 443 #ifdef CONFIG_SERIAL_8250
 444
 445         static struct uart_port uart_port[2];
 446
 447         memset(uart_port, 0, sizeof(struct uart_port) * 2);
 448
 449         uart_port[0].type = PORT_AR7;
 450         uart_port[0].line = 0;
 451         uart_port[0].irq = AR7_IRQ_UART0;
 452         uart_port[0].uartclk = ar7_bus_freq() / 2;
 453         uart_port[0].iotype = UPIO_MEM;
 454         uart_port[0].mapbase = AR7_REGS_UART0;
 455         uart_port[0].membase = ioremap(uart_port[0].mapbase, 256);
 456         uart_port[0].regshift = 2;
 457         uart_port[0].flags = UPF_IOREMAP;
 458         res = early_serial_setup(&uart_port[0]);
 459         if (res)
 460                 return res;
 461
 462
 463         /* Only TNETD73xx have a second serial port */
 464         if (ar7_has_second_uart()) {
 465                 uart_port[1].type = PORT_AR7;
 466                 uart_port[1].line = 1;
 467                 uart_port[1].irq = AR7_IRQ_UART1;
 468                 uart_port[1].uartclk = ar7_bus_freq() / 2;
 469                 uart_port[1].iotype = UPIO_MEM;
 470                 uart_port[1].mapbase = UR8_REGS_UART1;
 471                 uart_port[1].membase = ioremap(uart_port[1].mapbase, 256);
 472                 uart_port[1].regshift = 2;
 473                 uart_port[1].flags = UPF_IOREMAP;
 474                 res = early_serial_setup(&uart_port[1]);
 475                 if (res)
 476                         return res;
 477         }
 478
 479 #else /* !CONFIG_SERIAL_8250 */
 480
 481         uart_data[0].uartclk = ar7_bus_freq() / 2;
 482         uart_data[1].uartclk = uart_data[0].uartclk;
 483
 484         /* Only TNETD73xx have a second serial port */
 485         if (ar7_has_second_uart())
 486                 uart.dev.platform_data = uart_data;
 487
 488         res = platform_device_register(&uart);
 489         if (res)
 490                 return res;
 491
 492 #endif /* CONFIG_SERIAL_8250 */
 493
 494         res = platform_device_register(&physmap_flash);
 495         if (res)
 496                 return res;
 497
 498         ar7_device_disable(vlynq_low_data.reset_bit);
 499         res = platform_device_register(&vlynq_low);
 500         if (res)
 501                 return res;
 502
 503         if (ar7_has_high_vlynq()) {
 504                 ar7_device_disable(vlynq_high_data.reset_bit);
 505                 res = platform_device_register(&vlynq_high);
 506                 if (res)
 507                         return res;
 508         }
 509
 510         if (ar7_has_high_cpmac()) {
 511                 cpmac_get_mac(1, cpmac_high_data.dev_addr);
 512                 res = platform_device_register(&cpmac_high);
 513                 if (res)
 514                         return res;
 515         } else {
 516                 cpmac_low_data.phy_mask = 0xffffffff;
 517         }
 518
 519         cpmac_get_mac(0, cpmac_low_data.dev_addr);
 520         res = platform_device_register(&cpmac_low);
 521         if (res)
 522                 return res;
 523
 524         detect_leds();
 525         res = platform_device_register(&ar7_gpio_leds);
 526         if (res)
 527                 return res;
 528
 529         res = platform_device_register(&ar7_udc);
 530
 531         return res;
 532 }
 533
 534
 535 arch_initcall(ar7_register_devices);