target/linux/ar7/files/arch/mips/ar7/platform.c

   1 /*
   2  * Copyright (C) 2006, 2007 OpenWrt.org
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18
  19 #include <linux/autoconf.h>
  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/version.h>
  32 #include <linux/vlynq.h>
  33 #include <linux/leds.h>
  34 #include <linux/string.h>
  35
  36 #include <asm/addrspace.h>
  37 #include <asm/ar7/ar7.h>
  38 #include <asm/ar7/gpio.h>
  39 #include <asm/ar7/prom.h>
  40
  41 struct plat_vlynq_data {
  42         struct plat_vlynq_ops ops;
  43         int gpio_bit;
  44         int reset_bit;
  45 };
  46
  47
  48 static int vlynq_on(struct vlynq_device *dev)
  49 {
  50         int result;
  51         struct plat_vlynq_data *pdata = dev->dev.platform_data;
  52
  53         if ((result = gpio_request(pdata->gpio_bit, "vlynq")))
  54                 goto out;
  55
  56         ar7_device_reset(pdata->reset_bit);
  57
  58         if ((result = ar7_gpio_disable(pdata->gpio_bit)))
  59                 goto out_enabled;
  60
  61         if ((result = ar7_gpio_enable(pdata->gpio_bit)))
  62                 goto out_enabled;
  63
  64         if ((result = gpio_direction_output(pdata->gpio_bit, 0)))
  65                 goto out_gpio_enabled;
  66
  67         mdelay(50);
  68
  69         gpio_set_value(pdata->gpio_bit, 1);
  70         mdelay(50);
  71
  72         return 0;
  73
  74 out_gpio_enabled:
  75         ar7_gpio_disable(pdata->gpio_bit);
  76 out_enabled:
  77         ar7_device_disable(pdata->reset_bit);
  78         gpio_free(pdata->gpio_bit);
  79 out:
  80         return result;
  81 }
  82
  83 static void vlynq_off(struct vlynq_device *dev)
  84 {
  85         struct plat_vlynq_data *pdata = dev->dev.platform_data;
  86         ar7_gpio_disable(pdata->gpio_bit);
  87         gpio_free(pdata->gpio_bit);
  88         ar7_device_disable(pdata->reset_bit);
  89 }
  90
  91 static struct resource physmap_flash_resource = {
  92         .name = "mem",
  93         .flags = IORESOURCE_MEM,
  94         .start = 0x10000000,
  95         .end = 0x107fffff,
  96 };
  97
  98 static struct resource cpmac_low_res[] = {
  99         {
 100                 .name = "regs",
 101                 .flags = IORESOURCE_MEM,
 102                 .start = AR7_REGS_MAC0,
 103                 .end = AR7_REGS_MAC0 + 0x7ff,
 104         },
 105         {
 106                 .name = "irq",
 107                 .flags = IORESOURCE_IRQ,
 108                 .start = 27,
 109                 .end = 27,
 110         },
 111 };
 112
 113 static struct resource cpmac_high_res[] = {
 114         {
 115                 .name = "regs",
 116                 .flags = IORESOURCE_MEM,
 117                 .start = AR7_REGS_MAC1,
 118                 .end = AR7_REGS_MAC1 + 0x7ff,
 119         },
 120         {
 121                 .name = "irq",
 122                 .flags = IORESOURCE_IRQ,
 123                 .start = 41,
 124                 .end = 41,
 125         },
 126 };
 127
 128 static struct resource vlynq_low_res[] = {
 129         {
 130                 .name = "regs",
 131                 .flags = IORESOURCE_MEM,
 132                 .start = AR7_REGS_VLYNQ0,
 133                 .end = AR7_REGS_VLYNQ0 + 0xff,
 134         },
 135         {
 136                 .name = "irq",
 137                 .flags = IORESOURCE_IRQ,
 138                 .start = 29,
 139                 .end = 29,
 140         },
 141         {
 142                 .name = "mem",
 143                 .flags = IORESOURCE_MEM,
 144                 .start = 0x04000000,
 145                 .end = 0x04ffffff,
 146         },
 147         {
 148                 .name = "devirq",
 149                 .flags = IORESOURCE_IRQ,
 150                 .start = 80,
 151                 .end = 111,
 152         },
 153 };
 154
 155 static struct resource vlynq_high_res[] = {
 156         {
 157                 .name = "regs",
 158                 .flags = IORESOURCE_MEM,
 159                 .start = AR7_REGS_VLYNQ1,
 160                 .end = AR7_REGS_VLYNQ1 + 0xff,
 161         },
 162         {
 163                 .name = "irq",
 164                 .flags = IORESOURCE_IRQ,
 165                 .start = 33,
 166                 .end = 33,
 167         },
 168         {
 169                 .name = "mem",
 170                 .flags = IORESOURCE_MEM,
 171                 .start = 0x0c000000,
 172                 .end = 0x0cffffff,
 173         },
 174         {
 175                 .name = "devirq",
 176                 .flags = IORESOURCE_IRQ,
 177                 .start = 112,
 178                 .end = 143,
 179         },
 180 };
 181
 182 static struct resource usb_res[] = {
 183         {
 184                 .name = "regs",
 185                 .flags = IORESOURCE_MEM,
 186                 .start = AR7_REGS_USB,
 187                 .end = AR7_REGS_USB + 0xff,
 188         },
 189         {
 190                 .name = "irq",
 191                 .flags = IORESOURCE_IRQ,
 192                 .start = 32,
 193                 .end = 32,
 194         },
 195         {
 196                 .name = "mem",
 197                 .flags = IORESOURCE_MEM,
 198                 .start = 0x03400000,
 199                 .end = 0x034001fff,
 200         },
 201 };
 202
 203 static struct physmap_flash_data physmap_flash_data = {
 204         .width = 2,
 205 };
 206
 207 static struct plat_cpmac_data cpmac_low_data = {
 208         .reset_bit = 17,
 209         .power_bit = 20,
 210         .phy_mask = 0x80000000,
 211 };
 212
 213 static struct plat_cpmac_data cpmac_high_data = {
 214         .reset_bit = 21,
 215         .power_bit = 22,
 216         .phy_mask = 0x7fffffff,
 217 };
 218
 219 static struct plat_vlynq_data vlynq_low_data = {
 220         .ops.on = vlynq_on,
 221         .ops.off = vlynq_off,
 222         .reset_bit = 20,
 223         .gpio_bit = 18,
 224 };
 225
 226 static struct plat_vlynq_data vlynq_high_data = {
 227         .ops.on = vlynq_on,
 228         .ops.off = vlynq_off,
 229         .reset_bit = 16,
 230         .gpio_bit = 19,
 231 };
 232
 233 static struct platform_device physmap_flash = {
 234         .id = 0,
 235         .name = "physmap-flash",
 236         .dev.platform_data = &physmap_flash_data,
 237         .resource = &physmap_flash_resource,
 238         .num_resources = 1,
 239 };
 240
 241 static u64 cpmac_dma_mask = DMA_32BIT_MASK;
 242 static struct platform_device cpmac_low = {
 243         .id = 0,
 244         .name = "cpmac",
 245         .dev = {
 246                 .dma_mask = &cpmac_dma_mask,
 247                 .coherent_dma_mask = DMA_32BIT_MASK,
 248                 .platform_data = &cpmac_low_data,
 249         },
 250         .resource = cpmac_low_res,
 251         .num_resources = ARRAY_SIZE(cpmac_low_res),
 252 };
 253
 254 static struct platform_device cpmac_high = {
 255         .id = 1,
 256         .name = "cpmac",
 257         .dev = {
 258                 .dma_mask = &cpmac_dma_mask,
 259                 .coherent_dma_mask = DMA_32BIT_MASK,
 260                 .platform_data = &cpmac_high_data,
 261         },
 262         .resource = cpmac_high_res,
 263         .num_resources = ARRAY_SIZE(cpmac_high_res),
 264 };
 265
 266 static struct platform_device vlynq_low = {
 267         .id = 0,
 268         .name = "vlynq",
 269         .dev.platform_data = &vlynq_low_data,
 270         .resource = vlynq_low_res,
 271         .num_resources = ARRAY_SIZE(vlynq_low_res),
 272 };
 273
 274 static struct platform_device vlynq_high = {
 275         .id = 1,
 276         .name = "vlynq",
 277         .dev.platform_data = &vlynq_high_data,
 278         .resource = vlynq_high_res,
 279         .num_resources = ARRAY_SIZE(vlynq_high_res),
 280 };
 281
 282
 283 /* This is proper way to define uart ports, but they are then detected
 284  * as xscale and, obviously, don't work...
 285  */
 286 #if !defined(CONFIG_SERIAL_8250)
 287
 288 static struct plat_serial8250_port uart0_data = {
 289         .mapbase = AR7_REGS_UART0,
 290         .irq = AR7_IRQ_UART0,
 291         .regshift = 2,
 292         .iotype = UPIO_MEM,
 293         .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
 294 };
 295
 296 static struct plat_serial8250_port uart1_data = {
 297         .mapbase = UR8_REGS_UART1,
 298         .irq = AR7_IRQ_UART1,
 299         .regshift = 2,
 300         .iotype = UPIO_MEM,
 301         .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
 302 };
 303
 304 static struct plat_serial8250_port uart_data[] = {
 305         uart0_data,
 306         uart1_data,
 307         { .flags = 0 }
 308 };
 309
 310 static struct plat_serial8250_port uart_data_single[] = {
 311         uart0_data,
 312         { .flags = 0 }
 313 };
 314
 315 static struct platform_device uart = {
 316         .id = 0,
 317         .name = "serial8250",
 318         .dev.platform_data = uart_data_single
 319 };
 320 #endif
 321
 322 static struct gpio_led default_leds[] = {
 323         { .name = "status", .gpio = 8, .active_low = 1, },
 324 };
 325
 326 static struct gpio_led fb_sl_leds[] = {
 327         { .name = "1", .gpio = 7, },
 328         { .name = "2", .gpio = 13, .active_low = 1, },
 329         { .name = "3", .gpio = 10, .active_low = 1, },
 330         { .name = "4", .gpio = 12, .active_low = 1, },
 331         { .name = "5", .gpio = 9, .active_low = 1, },
 332 };
 333
 334 static struct gpio_led fb_fon_leds[] = {
 335         { .name = "1", .gpio = 8, },
 336         { .name = "2", .gpio = 3, .active_low = 1, },
 337         { .name = "3", .gpio = 5, },
 338         { .name = "4", .gpio = 4, .active_low = 1, },
 339         { .name = "5", .gpio = 11, .active_low = 1, },
 340 };
 341
 342 static struct gpio_led_platform_data ar7_led_data;
 343
 344 static struct platform_device ar7_gpio_leds = {
 345         .name = "leds-gpio",
 346         .id = -1,
 347         .dev = {
 348                 .platform_data = &ar7_led_data,
 349         }
 350 };
 351
 352 static struct platform_device ar7_udc = {
 353         .id = -1,
 354         .name = "ar7_udc",
 355         .resource = usb_res,
 356         .num_resources = ARRAY_SIZE(usb_res),
 357 };
 358
 359 static inline unsigned char char2hex(char h)
 360 {
 361         switch (h) {
 362         case '0': case '1': case '2': case '3': case '4':
 363         case '5': case '6': case '7': case '8': case '9':
 364                 return h - '0';
 365         case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
 366                 return h - 'A' + 10;
 367         case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
 368                 return h - 'a' + 10;
 369         default:
 370                 return 0;
 371         }
 372 }
 373
 374 static void cpmac_get_mac(int instance, unsigned char *dev_addr)
 375 {
 376         int i;
 377         char name[5], default_mac[] = "00:00:00:12:34:56", *mac;
 378
 379         mac = NULL;
 380         sprintf(name, "mac%c", 'a' + instance);
 381         mac = prom_getenv(name);
 382         if (!mac) {
 383                 sprintf(name, "mac%c", 'a');
 384                 mac = prom_getenv(name);
 385         }
 386         if (!mac)
 387                 mac = default_mac;
 388         for (i = 0; i < 6; i++)
 389                 dev_addr[i] = (char2hex(mac[i * 3]) << 4) +
 390                         char2hex(mac[i * 3 + 1]);
 391 }
 392
 393 static void __init detect_leds(void)
 394 {
 395         char *prId;
 396
 397         /* Default LEDs */
 398         ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
 399         ar7_led_data.leds = default_leds;
 400
 401         /* FIXME: the whole thing is unreliable */
 402         prId = prom_getenv("ProductID");
 403
 404         /* If we can't get the product id from PROM, use the default LEDs */
 405         if (!prId)
 406                 return;
 407
 408         if (strstr(prId, "Fritz_Box_FON")) {
 409                 ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
 410                 ar7_led_data.leds = fb_fon_leds;
 411         } else if (strstr(prId, "Fritz_Box_")) {
 412                 ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
 413                 ar7_led_data.leds = fb_sl_leds;
 414         }
 415 }
 416
 417 static int __init ar7_register_devices(void)
 418 {
 419         int res;
 420
 421 #ifdef CONFIG_SERIAL_8250
 422
 423         static struct uart_port uart_port[2];
 424
 425         memset(uart_port, 0, sizeof(struct uart_port) * 2);
 426
 427         uart_port[0].type = PORT_AR7;
 428         uart_port[0].line = 0;
 429         uart_port[0].irq = AR7_IRQ_UART0;
 430         uart_port[0].uartclk = ar7_bus_freq() / 2;
 431         uart_port[0].iotype = UPIO_MEM;
 432         uart_port[0].mapbase = AR7_REGS_UART0;
 433         uart_port[0].membase = ioremap(uart_port[0].mapbase, 256);
 434         uart_port[0].regshift = 2;
 435         res = early_serial_setup(&uart_port[0]);
 436         if (res)
 437                 return res;
 438
 439
 440         /* Only TNETD73xx have a second serial port */
 441         if (ar7_has_second_uart()) {
 442                 uart_port[1].type = PORT_AR7;
 443                 uart_port[1].line = 1;
 444                 uart_port[1].irq = AR7_IRQ_UART1;
 445                 uart_port[1].uartclk = ar7_bus_freq() / 2;
 446                 uart_port[1].iotype = UPIO_MEM;
 447                 uart_port[1].mapbase = UR8_REGS_UART1;
 448                 uart_port[1].membase = ioremap(uart_port[1].mapbase, 256);
 449                 uart_port[1].regshift = 2;
 450                 res = early_serial_setup(&uart_port[1]);
 451                 if (res)
 452                         return res;
 453         }
 454
 455 #else /* !CONFIG_SERIAL_8250 */
 456
 457         uart_data[0].uartclk = ar7_bus_freq() / 2;
 458         uart_data[1].uartclk = uart_data[0].uartclk;
 459
 460         /* Only TNETD73xx have a second serial port */
 461         if (ar7_has_second_uart())
 462                 uart.dev.platform_data = uart_data;
 463
 464         res = platform_device_register(&uart);
 465         if (res)
 466                 return res;
 467
 468 #endif /* CONFIG_SERIAL_8250 */
 469
 470         res = platform_device_register(&physmap_flash);
 471         if (res)
 472                 return res;
 473
 474         res = platform_device_register(&vlynq_low);
 475         if (res)
 476                 return res;
 477
 478         ar7_device_disable(vlynq_low_data.reset_bit);
 479         if (ar7_has_high_vlynq()) {
 480                 ar7_device_disable(vlynq_high_data.reset_bit);
 481                 res = platform_device_register(&vlynq_high);
 482                 if (res)
 483                         return res;
 484         }
 485
 486         if (ar7_has_high_cpmac()) {
 487                 cpmac_get_mac(1, cpmac_high_data.dev_addr);
 488                 res = platform_device_register(&cpmac_high);
 489                 if (res)
 490                         return res;
 491         } else {
 492                 cpmac_low_data.phy_mask = 0xffffffff;
 493         }
 494
 495         cpmac_get_mac(0, cpmac_low_data.dev_addr);
 496         res = platform_device_register(&cpmac_low);
 497         if (res)
 498                 return res;
 499
 500         detect_leds();
 501         res = platform_device_register(&ar7_gpio_leds);
 502         if (res)
 503                 return res;
 504
 505         res = platform_device_register(&ar7_udc);
 506
 507         return res;
 508 }
 509
 510
 511 arch_initcall(ar7_register_devices);