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 physmap_flash_data physmap_flash_data = {
 184         .width = 2,
 185 };
 186
 187 static struct plat_cpmac_data cpmac_low_data = {
 188         .reset_bit = 17,
 189         .power_bit = 20,
 190         .phy_mask = 0x80000000,
 191 };
 192
 193 static struct plat_cpmac_data cpmac_high_data = {
 194         .reset_bit = 21,
 195         .power_bit = 22,
 196         .phy_mask = 0x7fffffff,
 197 };
 198
 199 static struct plat_vlynq_data vlynq_low_data = {
 200         .ops.on = vlynq_on,
 201         .ops.off = vlynq_off,
 202         .reset_bit = 20,
 203         .gpio_bit = 18,
 204 };
 205
 206 static struct plat_vlynq_data vlynq_high_data = {
 207         .ops.on = vlynq_on,
 208         .ops.off = vlynq_off,
 209         .reset_bit = 16,
 210         .gpio_bit = 19,
 211 };
 212
 213 static struct platform_device physmap_flash = {
 214         .id = 0,
 215         .name = "physmap-flash",
 216         .dev.platform_data = &physmap_flash_data,
 217         .resource = &physmap_flash_resource,
 218         .num_resources = 1,
 219 };
 220
 221 static u64 cpmac_dma_mask = DMA_32BIT_MASK;
 222 static struct platform_device cpmac_low = {
 223         .id = 0,
 224         .name = "cpmac",
 225         .dev = {
 226                 .dma_mask = &cpmac_dma_mask,
 227                 .coherent_dma_mask = DMA_32BIT_MASK,
 228                 .platform_data = &cpmac_low_data,
 229         },
 230         .resource = cpmac_low_res,
 231         .num_resources = ARRAY_SIZE(cpmac_low_res),
 232 };
 233
 234 static struct platform_device cpmac_high = {
 235         .id = 1,
 236         .name = "cpmac",
 237         .dev = {
 238                 .dma_mask = &cpmac_dma_mask,
 239                 .coherent_dma_mask = DMA_32BIT_MASK,
 240                 .platform_data = &cpmac_high_data,
 241         },
 242         .resource = cpmac_high_res,
 243         .num_resources = ARRAY_SIZE(cpmac_high_res),
 244 };
 245
 246 static struct platform_device vlynq_low = {
 247         .id = 0,
 248         .name = "vlynq",
 249         .dev.platform_data = &vlynq_low_data,
 250         .resource = vlynq_low_res,
 251         .num_resources = ARRAY_SIZE(vlynq_low_res),
 252 };
 253
 254 static struct platform_device vlynq_high = {
 255         .id = 1,
 256         .name = "vlynq",
 257         .dev.platform_data = &vlynq_high_data,
 258         .resource = vlynq_high_res,
 259         .num_resources = ARRAY_SIZE(vlynq_high_res),
 260 };
 261
 262
 263 /* This is proper way to define uart ports, but they are then detected
 264  * as xscale and, obviously, don't work...
 265  */
 266 #if !defined(CONFIG_SERIAL_8250)
 267
 268 static struct plat_serial8250_port uart0_data = {
 269         .mapbase = AR7_REGS_UART0,
 270         .irq = AR7_IRQ_UART0,
 271         .regshift = 2,
 272         .iotype = UPIO_MEM,
 273         .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
 274 };
 275
 276 static struct plat_serial8250_port uart1_data = {
 277         .mapbase = UR8_REGS_UART1,
 278         .irq = AR7_IRQ_UART1,
 279         .regshift = 2,
 280         .iotype = UPIO_MEM,
 281         .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
 282 };
 283
 284 static struct plat_serial8250_port uart_data[] = {
 285         uart0_data,
 286         uart1_data,
 287         { .flags = 0 }
 288 };
 289
 290 static struct plat_serial8250_port uart_data_single[] = {
 291         uart0_data,
 292         { .flags = 0 }
 293 };
 294
 295 static struct platform_device uart = {
 296         .id = 0,
 297         .name = "serial8250",
 298         .dev.platform_data = uart_data_single
 299 };
 300 #endif
 301
 302 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
 303 static struct gpio_led default_leds[] = {
 304         { .name = "status", .gpio = 8, .active_low = 1, },
 305 };
 306
 307 static struct gpio_led fb_leds[] = {
 308         { .name = "1", .gpio = 7, },
 309         { .name = "2", .gpio = 13, .active_low = 1, },
 310         { .name = "3", .gpio = 10, .active_low = 1, },
 311         { .name = "4", .gpio = 12, .active_low = 1, },
 312         { .name = "5", .gpio = 9, .active_low = 1, },
 313 };
 314
 315 static struct gpio_led fb_fon_leds[] = {
 316         { .name = "1", .gpio = 8, },
 317         { .name = "2", .gpio = 3, .active_low = 1, },
 318         { .name = "3", .gpio = 5, },
 319         { .name = "4", .gpio = 4, .active_low = 1, },
 320         { .name = "5", .gpio = 11, .active_low = 1, },
 321 };
 322
 323 static struct gpio_led_platform_data ar7_led_data;
 324
 325 static struct platform_device ar7_gpio_leds = {
 326         .name = "leds-gpio",
 327         .id = -1,
 328         .dev = {
 329                 .platform_data = &ar7_led_data,
 330         }
 331 };
 332 #endif
 333
 334 static inline unsigned char char2hex(char h)
 335 {
 336         switch (h) {
 337         case '0': case '1': case '2': case '3': case '4':
 338         case '5': case '6': case '7': case '8': case '9':
 339                 return h - '0';
 340         case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
 341                 return h - 'A' + 10;
 342         case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
 343                 return h - 'a' + 10;
 344         default:
 345                 return 0;
 346         }
 347 }
 348
 349 static void cpmac_get_mac(int instance, unsigned char *dev_addr)
 350 {
 351         int i;
 352         char name[5], default_mac[] = "00:00:00:12:34:56", *mac;
 353
 354         mac = NULL;
 355         sprintf(name, "mac%c", 'a' + instance);
 356         mac = prom_getenv(name);
 357         if (!mac) {
 358                 sprintf(name, "mac%c", 'a');
 359                 mac = prom_getenv(name);
 360         }
 361         if (!mac)
 362                 mac = default_mac;
 363         for (i = 0; i < 6; i++)
 364                 dev_addr[i] = (char2hex(mac[i * 3]) << 4) +
 365                         char2hex(mac[i * 3 + 1]);
 366 }
 367
 368 static int __init ar7_register_devices(void)
 369 {
 370         int res;
 371
 372 #ifdef CONFIG_SERIAL_8250
 373
 374         static struct uart_port uart_port[2];
 375
 376         memset(uart_port, 0, sizeof(struct uart_port) * 2);
 377
 378         uart_port[0].type = PORT_AR7;
 379         uart_port[0].line = 0;
 380         uart_port[0].irq = AR7_IRQ_UART0;
 381         uart_port[0].uartclk = ar7_bus_freq() / 2;
 382         uart_port[0].iotype = UPIO_MEM;
 383         uart_port[0].mapbase = AR7_REGS_UART0;
 384         uart_port[0].membase = ioremap(uart_port[0].mapbase, 256);
 385         uart_port[0].regshift = 2;
 386         res = early_serial_setup(&uart_port[0]);
 387         if (res)
 388                 return res;
 389
 390
 391         /* Only TNETD73xx have a second serial port */
 392         if (ar7_has_second_uart()) {
 393                 uart_port[1].type = PORT_AR7;
 394                 uart_port[1].line = 1;
 395                 uart_port[1].irq = AR7_IRQ_UART1;
 396                 uart_port[1].uartclk = ar7_bus_freq() / 2;
 397                 uart_port[1].iotype = UPIO_MEM;
 398                 uart_port[1].mapbase = UR8_REGS_UART1;
 399                 uart_port[1].membase = ioremap(uart_port[1].mapbase, 256);
 400                 uart_port[1].regshift = 2;
 401                 res = early_serial_setup(&uart_port[1]);
 402                 if (res)
 403                         return res;
 404         }
 405
 406 #else /* !CONFIG_SERIAL_8250 */
 407
 408         uart_data[0].uartclk = ar7_bus_freq() / 2;
 409         uart_data[1].uartclk = uart_data[0].uartclk;
 410
 411         /* Only TNETD73xx have a second serial port */
 412         if (ar7_has_second_uart())
 413                 uart.dev.platform_data = uart_data;
 414
 415         res = platform_device_register(&uart);
 416         if (res)
 417                 return res;
 418
 419 #endif /* CONFIG_SERIAL_8250 */
 420
 421         res = platform_device_register(&physmap_flash);
 422         if (res)
 423                 return res;
 424
 425         res = platform_device_register(&vlynq_low);
 426         if (res)
 427                 return res;
 428
 429         ar7_device_disable(vlynq_low_data.reset_bit);
 430         if (ar7_has_high_vlynq()) {
 431                 ar7_device_disable(vlynq_high_data.reset_bit);
 432                 res = platform_device_register(&vlynq_high);
 433                 if (res)
 434                         return res;
 435         }
 436
 437         if (ar7_has_high_cpmac()) {
 438                 cpmac_get_mac(1, cpmac_high_data.dev_addr);
 439                 res = platform_device_register(&cpmac_high);
 440                 if (res)
 441                         return res;
 442         } else {
 443                 cpmac_low_data.phy_mask = 0xffffffff;
 444         }
 445
 446         cpmac_get_mac(0, cpmac_low_data.dev_addr);
 447         res = platform_device_register(&cpmac_low);
 448         if (res)
 449                 return res;
 450
 451 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
 452 #warning FIXME: add model detection
 453         ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
 454         ar7_led_data.leds = default_leds;
 455         res = platform_device_register(&ar7_gpio_leds);
 456 #endif
 457         return res;
 458 }
 459
 460
 461 arch_initcall(ar7_register_devices);