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