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 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
  33 #include <linux/leds.h>
  34 #endif
  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 #include <asm/ar7/vlynq.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 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
 324 static struct gpio_led default_leds[] = {
 325         { .name = "status", .gpio = 8, .active_low = 1, },
 326 };
 327
 328 static struct gpio_led fb_leds[] = {
 329         { .name = "1", .gpio = 7, },
 330         { .name = "2", .gpio = 13, .active_low = 1, },
 331         { .name = "3", .gpio = 10, .active_low = 1, },
 332         { .name = "4", .gpio = 12, .active_low = 1, },
 333         { .name = "5", .gpio = 9, .active_low = 1, },
 334 };
 335
 336 static struct gpio_led fb_fon_leds[] = {
 337         { .name = "1", .gpio = 8, },
 338         { .name = "2", .gpio = 3, .active_low = 1, },
 339         { .name = "3", .gpio = 5, },
 340         { .name = "4", .gpio = 4, .active_low = 1, },
 341         { .name = "5", .gpio = 11, .active_low = 1, },
 342 };
 343
 344 static struct gpio_led_platform_data ar7_led_data;
 345
 346 static struct platform_device ar7_gpio_leds = {
 347         .name = "leds-gpio",
 348         .id = -1,
 349         .dev = {
 350                 .platform_data = &ar7_led_data,
 351         }
 352 };
 353 #endif
 354
 355 static struct platform_device ar7_udc = {
 356         .id = -1,
 357         .name = "ar7_udc",
 358         .resource = usb_res,
 359         .num_resources = ARRAY_SIZE(usb_res),
 360 };
 361
 362 static inline unsigned char char2hex(char h)
 363 {
 364         switch (h) {
 365         case '0': case '1': case '2': case '3': case '4':
 366         case '5': case '6': case '7': case '8': case '9':
 367                 return h - '0';
 368         case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
 369                 return h - 'A' + 10;
 370         case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
 371                 return h - 'a' + 10;
 372         default:
 373                 return 0;
 374         }
 375 }
 376
 377 static void cpmac_get_mac(int instance, unsigned char *dev_addr)
 378 {
 379         int i;
 380         char name[5], default_mac[] = "00:00:00:12:34:56", *mac;
 381
 382         mac = NULL;
 383         sprintf(name, "mac%c", 'a' + instance);
 384         mac = prom_getenv(name);
 385         if (!mac) {
 386                 sprintf(name, "mac%c", 'a');
 387                 mac = prom_getenv(name);
 388         }
 389         if (!mac)
 390                 mac = default_mac;
 391         for (i = 0; i < 6; i++)
 392                 dev_addr[i] = (char2hex(mac[i * 3]) << 4) +
 393                         char2hex(mac[i * 3 + 1]);
 394 }
 395
 396 static int __init ar7_register_devices(void)
 397 {
 398         int res;
 399
 400 #ifdef CONFIG_SERIAL_8250
 401
 402         static struct uart_port uart_port[2];
 403
 404         memset(uart_port, 0, sizeof(struct uart_port) * 2);
 405
 406         uart_port[0].type = PORT_AR7;
 407         uart_port[0].line = 0;
 408         uart_port[0].irq = AR7_IRQ_UART0;
 409         uart_port[0].uartclk = ar7_bus_freq() / 2;
 410         uart_port[0].iotype = UPIO_MEM;
 411         uart_port[0].mapbase = AR7_REGS_UART0;
 412         uart_port[0].membase = ioremap(uart_port[0].mapbase, 256);
 413         uart_port[0].regshift = 2;
 414         res = early_serial_setup(&uart_port[0]);
 415         if (res)
 416                 return res;
 417
 418
 419         /* Only TNETD73xx have a second serial port */
 420         if (ar7_has_second_uart()) {
 421                 uart_port[1].type = PORT_AR7;
 422                 uart_port[1].line = 1;
 423                 uart_port[1].irq = AR7_IRQ_UART1;
 424                 uart_port[1].uartclk = ar7_bus_freq() / 2;
 425                 uart_port[1].iotype = UPIO_MEM;
 426                 uart_port[1].mapbase = UR8_REGS_UART1;
 427                 uart_port[1].membase = ioremap(uart_port[1].mapbase, 256);
 428                 uart_port[1].regshift = 2;
 429                 res = early_serial_setup(&uart_port[1]);
 430                 if (res)
 431                         return res;
 432         }
 433
 434 #else /* !CONFIG_SERIAL_8250 */
 435
 436         uart_data[0].uartclk = ar7_bus_freq() / 2;
 437         uart_data[1].uartclk = uart_data[0].uartclk;
 438
 439         /* Only TNETD73xx have a second serial port */
 440         if (ar7_has_second_uart())
 441                 uart.dev.platform_data = uart_data;
 442
 443         res = platform_device_register(&uart);
 444         if (res)
 445                 return res;
 446
 447 #endif /* CONFIG_SERIAL_8250 */
 448
 449         res = platform_device_register(&physmap_flash);
 450         if (res)
 451                 return res;
 452
 453         res = platform_device_register(&vlynq_low);
 454         if (res)
 455                 return res;
 456
 457         ar7_device_disable(vlynq_low_data.reset_bit);
 458         if (ar7_has_high_vlynq()) {
 459                 ar7_device_disable(vlynq_high_data.reset_bit);
 460                 res = platform_device_register(&vlynq_high);
 461                 if (res)
 462                         return res;
 463         }
 464
 465         if (ar7_has_high_cpmac()) {
 466                 cpmac_get_mac(1, cpmac_high_data.dev_addr);
 467                 res = platform_device_register(&cpmac_high);
 468                 if (res)
 469                         return res;
 470         } else {
 471                 cpmac_low_data.phy_mask = 0xffffffff;
 472         }
 473
 474         cpmac_get_mac(0, cpmac_low_data.dev_addr);
 475         res = platform_device_register(&cpmac_low);
 476         if (res)
 477                 return res;
 478
 479 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
 480 #warning FIXME: add model detection
 481         ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
 482         ar7_led_data.leds = default_leds;
 483         res = platform_device_register(&ar7_gpio_leds);
 484 #endif
 485         if (res)
 486                 return res;
 487
 488         res = platform_device_register(&ar7_udc);
 489
 490         return res;
 491 }
 492
 493
 494 arch_initcall(ar7_register_devices);