arch/arm/mach-iop13xx/setup.c

   1 /*
   2  * iop13xx platform Initialization
   3  * Copyright (c) 2005-2006, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  16  * Place - Suite 330, Boston, MA 02111-1307 USA.
  17  *
  18  */
  19
  20 #include <linux/serial_8250.h>
  21 #ifdef CONFIG_MTD_PHYSMAP
  22 #include <linux/mtd/physmap.h>
  23 #endif
  24 #include <asm/mach/map.h>
  25 #include <asm/hardware.h>
  26 #include <asm/irq.h>
  27 #include <asm/io.h>
  28 #include <asm/hardware/iop_adma.h>
  29
  30 #define IOP13XX_UART_XTAL 33334000
  31 #define IOP13XX_SETUP_DEBUG 0
  32 #define PRINTK(x...) ((void)(IOP13XX_SETUP_DEBUG && printk(x)))
  33
  34 /* Standard IO mapping for all IOP13XX based systems
  35  */
  36 static struct map_desc iop13xx_std_desc[] __initdata = {
  37         {    /* mem mapped registers */
  38                 .virtual = IOP13XX_PMMR_VIRT_MEM_BASE,
  39                 .pfn     = __phys_to_pfn(IOP13XX_PMMR_PHYS_MEM_BASE),
  40                 .length  = IOP13XX_PMMR_SIZE,
  41                 .type    = MT_DEVICE,
  42         }, { /* PCIE IO space */
  43                 .virtual = IOP13XX_PCIE_LOWER_IO_VA,
  44                 .pfn     = __phys_to_pfn(IOP13XX_PCIE_LOWER_IO_PA),
  45                 .length  = IOP13XX_PCIX_IO_WINDOW_SIZE,
  46                 .type    = MT_DEVICE,
  47         }, { /* PCIX IO space */
  48                 .virtual = IOP13XX_PCIX_LOWER_IO_VA,
  49                 .pfn     = __phys_to_pfn(IOP13XX_PCIX_LOWER_IO_PA),
  50                 .length  = IOP13XX_PCIX_IO_WINDOW_SIZE,
  51                 .type    = MT_DEVICE,
  52         },
  53 };
  54
  55 static struct resource iop13xx_uart0_resources[] = {
  56         [0] = {
  57                 .start = IOP13XX_UART0_PHYS,
  58                 .end = IOP13XX_UART0_PHYS + 0x3f,
  59                 .flags = IORESOURCE_MEM,
  60         },
  61         [1] = {
  62                 .start = IRQ_IOP13XX_UART0,
  63                 .end = IRQ_IOP13XX_UART0,
  64                 .flags = IORESOURCE_IRQ
  65         }
  66 };
  67
  68 static struct resource iop13xx_uart1_resources[] = {
  69         [0] = {
  70                 .start = IOP13XX_UART1_PHYS,
  71                 .end = IOP13XX_UART1_PHYS + 0x3f,
  72                 .flags = IORESOURCE_MEM,
  73         },
  74         [1] = {
  75                 .start = IRQ_IOP13XX_UART1,
  76                 .end = IRQ_IOP13XX_UART1,
  77                 .flags = IORESOURCE_IRQ
  78         }
  79 };
  80
  81 static struct plat_serial8250_port iop13xx_uart0_data[] = {
  82         {
  83        .membase     = (char*)(IOP13XX_UART0_VIRT),
  84        .mapbase     = (IOP13XX_UART0_PHYS),
  85        .irq         = IRQ_IOP13XX_UART0,
  86        .uartclk     = IOP13XX_UART_XTAL,
  87        .regshift    = 2,
  88        .iotype      = UPIO_MEM,
  89        .flags       = UPF_SKIP_TEST,
  90         },
  91         {  },
  92 };
  93
  94 static struct plat_serial8250_port iop13xx_uart1_data[] = {
  95         {
  96        .membase     = (char*)(IOP13XX_UART1_VIRT),
  97        .mapbase     = (IOP13XX_UART1_PHYS),
  98        .irq         = IRQ_IOP13XX_UART1,
  99        .uartclk     = IOP13XX_UART_XTAL,
 100        .regshift    = 2,
 101        .iotype      = UPIO_MEM,
 102        .flags       = UPF_SKIP_TEST,
 103         },
 104         {  },
 105 };
 106
 107 /* The ids are fixed up later in iop13xx_platform_init */
 108 static struct platform_device iop13xx_uart0 = {
 109        .name = "serial8250",
 110        .id = 0,
 111        .dev.platform_data = iop13xx_uart0_data,
 112        .num_resources = 2,
 113        .resource = iop13xx_uart0_resources,
 114 };
 115
 116 static struct platform_device iop13xx_uart1 = {
 117        .name = "serial8250",
 118        .id = 0,
 119        .dev.platform_data = iop13xx_uart1_data,
 120        .num_resources = 2,
 121        .resource = iop13xx_uart1_resources
 122 };
 123
 124 static struct resource iop13xx_i2c_0_resources[] = {
 125         [0] = {
 126                 .start = IOP13XX_I2C0_PHYS,
 127                 .end = IOP13XX_I2C0_PHYS + 0x18,
 128                 .flags = IORESOURCE_MEM,
 129         },
 130         [1] = {
 131                 .start = IRQ_IOP13XX_I2C_0,
 132                 .end = IRQ_IOP13XX_I2C_0,
 133                 .flags = IORESOURCE_IRQ
 134         }
 135 };
 136
 137 static struct resource iop13xx_i2c_1_resources[] = {
 138         [0] = {
 139                 .start = IOP13XX_I2C1_PHYS,
 140                 .end = IOP13XX_I2C1_PHYS + 0x18,
 141                 .flags = IORESOURCE_MEM,
 142         },
 143         [1] = {
 144                 .start = IRQ_IOP13XX_I2C_1,
 145                 .end = IRQ_IOP13XX_I2C_1,
 146                 .flags = IORESOURCE_IRQ
 147         }
 148 };
 149
 150 static struct resource iop13xx_i2c_2_resources[] = {
 151         [0] = {
 152                 .start = IOP13XX_I2C2_PHYS,
 153                 .end = IOP13XX_I2C2_PHYS + 0x18,
 154                 .flags = IORESOURCE_MEM,
 155         },
 156         [1] = {
 157                 .start = IRQ_IOP13XX_I2C_2,
 158                 .end = IRQ_IOP13XX_I2C_2,
 159                 .flags = IORESOURCE_IRQ
 160         }
 161 };
 162
 163 /* I2C controllers. The IOP13XX uses the same block as the IOP3xx, so
 164  * we just use the same device name.
 165  */
 166
 167 /* The ids are fixed up later in iop13xx_platform_init */
 168 static struct platform_device iop13xx_i2c_0_controller = {
 169         .name = "IOP3xx-I2C",
 170         .id = 0,
 171         .num_resources = 2,
 172         .resource = iop13xx_i2c_0_resources
 173 };
 174
 175 static struct platform_device iop13xx_i2c_1_controller = {
 176         .name = "IOP3xx-I2C",
 177         .id = 0,
 178         .num_resources = 2,
 179         .resource = iop13xx_i2c_1_resources
 180 };
 181
 182 static struct platform_device iop13xx_i2c_2_controller = {
 183         .name = "IOP3xx-I2C",
 184         .id = 0,
 185         .num_resources = 2,
 186         .resource = iop13xx_i2c_2_resources
 187 };
 188
 189 #ifdef CONFIG_MTD_PHYSMAP
 190 /* PBI Flash Device
 191  */
 192 static struct physmap_flash_data iq8134x_flash_data = {
 193         .width = 2,
 194 };
 195
 196 static struct resource iq8134x_flash_resource = {
 197         .start = IQ81340_FLASHBASE,
 198         .end   = 0,
 199         .flags = IORESOURCE_MEM,
 200 };
 201
 202 static struct platform_device iq8134x_flash = {
 203         .name           = "physmap-flash",
 204         .id             = 0,
 205         .dev            = { .platform_data  = &iq8134x_flash_data, },
 206         .num_resources  = 1,
 207         .resource       = &iq8134x_flash_resource,
 208 };
 209
 210 static unsigned long iq8134x_probe_flash_size(void)
 211 {
 212         uint8_t __iomem *flash_addr = ioremap(IQ81340_FLASHBASE, PAGE_SIZE);
 213         int i;
 214         char query[3];
 215         unsigned long size = 0;
 216         int width = iq8134x_flash_data.width;
 217
 218         if (flash_addr) {
 219                 /* send CFI 'query' command */
 220                 writew(0x98, flash_addr);
 221
 222                 /* check for CFI compliance */
 223                 for (i = 0; i < 3 * width; i += width)
 224                         query[i / width] = readb(flash_addr + (0x10 * width) + i);
 225
 226                 /* read the size */
 227                 if (memcmp(query, "QRY", 3) == 0)
 228                         size = 1 << readb(flash_addr + (0x27 * width));
 229
 230                 /* send CFI 'read array' command */
 231                 writew(0xff, flash_addr);
 232
 233                 iounmap(flash_addr);
 234         }
 235
 236         return size;
 237 }
 238 #endif
 239
 240 /* ADMA Channels */
 241 static struct resource iop13xx_adma_0_resources[] = {
 242         [0] = {
 243                 .start = IOP13XX_ADMA_PHYS_BASE(0),
 244                 .end = IOP13XX_ADMA_UPPER_PA(0),
 245                 .flags = IORESOURCE_MEM,
 246         },
 247         [1] = {
 248                 .start = IRQ_IOP13XX_ADMA0_EOT,
 249                 .end = IRQ_IOP13XX_ADMA0_EOT,
 250                 .flags = IORESOURCE_IRQ
 251         },
 252         [2] = {
 253                 .start = IRQ_IOP13XX_ADMA0_EOC,
 254                 .end = IRQ_IOP13XX_ADMA0_EOC,
 255                 .flags = IORESOURCE_IRQ
 256         },
 257         [3] = {
 258                 .start = IRQ_IOP13XX_ADMA0_ERR,
 259                 .end = IRQ_IOP13XX_ADMA0_ERR,
 260                 .flags = IORESOURCE_IRQ
 261         }
 262 };
 263
 264 static struct resource iop13xx_adma_1_resources[] = {
 265         [0] = {
 266                 .start = IOP13XX_ADMA_PHYS_BASE(1),
 267                 .end = IOP13XX_ADMA_UPPER_PA(1),
 268                 .flags = IORESOURCE_MEM,
 269         },
 270         [1] = {
 271                 .start = IRQ_IOP13XX_ADMA1_EOT,
 272                 .end = IRQ_IOP13XX_ADMA1_EOT,
 273                 .flags = IORESOURCE_IRQ
 274         },
 275         [2] = {
 276                 .start = IRQ_IOP13XX_ADMA1_EOC,
 277                 .end = IRQ_IOP13XX_ADMA1_EOC,
 278                 .flags = IORESOURCE_IRQ
 279         },
 280         [3] = {
 281                 .start = IRQ_IOP13XX_ADMA1_ERR,
 282                 .end = IRQ_IOP13XX_ADMA1_ERR,
 283                 .flags = IORESOURCE_IRQ
 284         }
 285 };
 286
 287 static struct resource iop13xx_adma_2_resources[] = {
 288         [0] = {
 289                 .start = IOP13XX_ADMA_PHYS_BASE(2),
 290                 .end = IOP13XX_ADMA_UPPER_PA(2),
 291                 .flags = IORESOURCE_MEM,
 292         },
 293         [1] = {
 294                 .start = IRQ_IOP13XX_ADMA2_EOT,
 295                 .end = IRQ_IOP13XX_ADMA2_EOT,
 296                 .flags = IORESOURCE_IRQ
 297         },
 298         [2] = {
 299                 .start = IRQ_IOP13XX_ADMA2_EOC,
 300                 .end = IRQ_IOP13XX_ADMA2_EOC,
 301                 .flags = IORESOURCE_IRQ
 302         },
 303         [3] = {
 304                 .start = IRQ_IOP13XX_ADMA2_ERR,
 305                 .end = IRQ_IOP13XX_ADMA2_ERR,
 306                 .flags = IORESOURCE_IRQ
 307         }
 308 };
 309
 310 static u64 iop13xx_adma_dmamask = DMA_64BIT_MASK;
 311 static struct iop_adma_platform_data iop13xx_adma_0_data = {
 312         .hw_id = 0,
 313         .pool_size = PAGE_SIZE,
 314 };
 315
 316 static struct iop_adma_platform_data iop13xx_adma_1_data = {
 317         .hw_id = 1,
 318         .pool_size = PAGE_SIZE,
 319 };
 320
 321 static struct iop_adma_platform_data iop13xx_adma_2_data = {
 322         .hw_id = 2,
 323         .pool_size = PAGE_SIZE,
 324 };
 325
 326 /* The ids are fixed up later in iop13xx_platform_init */
 327 static struct platform_device iop13xx_adma_0_channel = {
 328         .name = "iop-adma",
 329         .id = 0,
 330         .num_resources = 4,
 331         .resource = iop13xx_adma_0_resources,
 332         .dev = {
 333                 .dma_mask = &iop13xx_adma_dmamask,
 334                 .coherent_dma_mask = DMA_64BIT_MASK,
 335                 .platform_data = (void *) &iop13xx_adma_0_data,
 336         },
 337 };
 338
 339 static struct platform_device iop13xx_adma_1_channel = {
 340         .name = "iop-adma",
 341         .id = 0,
 342         .num_resources = 4,
 343         .resource = iop13xx_adma_1_resources,
 344         .dev = {
 345                 .dma_mask = &iop13xx_adma_dmamask,
 346                 .coherent_dma_mask = DMA_64BIT_MASK,
 347                 .platform_data = (void *) &iop13xx_adma_1_data,
 348         },
 349 };
 350
 351 static struct platform_device iop13xx_adma_2_channel = {
 352         .name = "iop-adma",
 353         .id = 0,
 354         .num_resources = 4,
 355         .resource = iop13xx_adma_2_resources,
 356         .dev = {
 357                 .dma_mask = &iop13xx_adma_dmamask,
 358                 .coherent_dma_mask = DMA_64BIT_MASK,
 359                 .platform_data = (void *) &iop13xx_adma_2_data,
 360         },
 361 };
 362
 363 void __init iop13xx_map_io(void)
 364 {
 365         /* Initialize the Static Page Table maps */
 366         iotable_init(iop13xx_std_desc, ARRAY_SIZE(iop13xx_std_desc));
 367 }
 368
 369 static int init_uart;
 370 static int init_i2c;
 371 static int init_adma;
 372
 373 void __init iop13xx_platform_init(void)
 374 {
 375         int i;
 376         u32 uart_idx, i2c_idx, adma_idx, plat_idx;
 377         struct platform_device *iop13xx_devices[IQ81340_MAX_PLAT_DEVICES];
 378
 379         /* set the bases so we can read the device id */
 380         iop13xx_set_atu_mmr_bases();
 381
 382         memset(iop13xx_devices, 0, sizeof(iop13xx_devices));
 383
 384         if (init_uart == IOP13XX_INIT_UART_DEFAULT) {
 385                 switch (iop13xx_dev_id()) {
 386                 /* enable both uarts on iop341 */
 387                 case 0x3380:
 388                 case 0x3384:
 389                 case 0x3388:
 390                 case 0x338c:
 391                         init_uart |= IOP13XX_INIT_UART_0;
 392                         init_uart |= IOP13XX_INIT_UART_1;
 393                         break;
 394                 /* only enable uart 1 */
 395                 default:
 396                         init_uart |= IOP13XX_INIT_UART_1;
 397                 }
 398         }
 399
 400         if (init_i2c == IOP13XX_INIT_I2C_DEFAULT) {
 401                 switch (iop13xx_dev_id()) {
 402                 /* enable all i2c units on iop341 and iop342 */
 403                 case 0x3380:
 404                 case 0x3384:
 405                 case 0x3388:
 406                 case 0x338c:
 407                 case 0x3382:
 408                 case 0x3386:
 409                 case 0x338a:
 410                 case 0x338e:
 411                         init_i2c |= IOP13XX_INIT_I2C_0;
 412                         init_i2c |= IOP13XX_INIT_I2C_1;
 413                         init_i2c |= IOP13XX_INIT_I2C_2;
 414                         break;
 415                 /* only enable i2c 1 and 2 */
 416                 default:
 417                         init_i2c |= IOP13XX_INIT_I2C_1;
 418                         init_i2c |= IOP13XX_INIT_I2C_2;
 419                 }
 420         }
 421
 422         if (init_adma == IOP13XX_INIT_ADMA_DEFAULT) {
 423                 init_adma |= IOP13XX_INIT_ADMA_0;
 424                 init_adma |= IOP13XX_INIT_ADMA_1;
 425                 init_adma |= IOP13XX_INIT_ADMA_2;
 426         }
 427
 428         plat_idx = 0;
 429         uart_idx = 0;
 430         i2c_idx = 0;
 431
 432         /* uart 1 (if enabled) is ttyS0 */
 433         if (init_uart & IOP13XX_INIT_UART_1) {
 434                 PRINTK("Adding uart1 to platform device list\n");
 435                 iop13xx_uart1.id = uart_idx++;
 436                 iop13xx_devices[plat_idx++] = &iop13xx_uart1;
 437         }
 438         if (init_uart & IOP13XX_INIT_UART_0) {
 439                 PRINTK("Adding uart0 to platform device list\n");
 440                 iop13xx_uart0.id = uart_idx++;
 441                 iop13xx_devices[plat_idx++] = &iop13xx_uart0;
 442         }
 443
 444         for(i = 0; i < IQ81340_NUM_I2C; i++) {
 445                 if ((init_i2c & (1 << i)) && IOP13XX_SETUP_DEBUG)
 446                         printk("Adding i2c%d to platform device list\n", i);
 447                 switch(init_i2c & (1 << i)) {
 448                 case IOP13XX_INIT_I2C_0:
 449                         iop13xx_i2c_0_controller.id = i2c_idx++;
 450                         iop13xx_devices[plat_idx++] =
 451                                 &iop13xx_i2c_0_controller;
 452                         break;
 453                 case IOP13XX_INIT_I2C_1:
 454                         iop13xx_i2c_1_controller.id = i2c_idx++;
 455                         iop13xx_devices[plat_idx++] =
 456                                 &iop13xx_i2c_1_controller;
 457                         break;
 458                 case IOP13XX_INIT_I2C_2:
 459                         iop13xx_i2c_2_controller.id = i2c_idx++;
 460                         iop13xx_devices[plat_idx++] =
 461                                 &iop13xx_i2c_2_controller;
 462                         break;
 463                 }
 464         }
 465
 466         /* initialize adma channel ids and capabilities */
 467         adma_idx = 0;
 468         for (i = 0; i < IQ81340_NUM_ADMA; i++) {
 469                 struct iop_adma_platform_data *plat_data;
 470                 if ((init_adma & (1 << i)) && IOP13XX_SETUP_DEBUG)
 471                         printk(KERN_INFO
 472                                 "Adding adma%d to platform device list\n", i);
 473                 switch (init_adma & (1 << i)) {
 474                 case IOP13XX_INIT_ADMA_0:
 475                         iop13xx_adma_0_channel.id = adma_idx++;
 476                         iop13xx_devices[plat_idx++] = &iop13xx_adma_0_channel;
 477                         plat_data = &iop13xx_adma_0_data;
 478                         dma_cap_set(DMA_MEMCPY, plat_data->cap_mask);
 479                         dma_cap_set(DMA_XOR, plat_data->cap_mask);
 480                         dma_cap_set(DMA_DUAL_XOR, plat_data->cap_mask);
 481                         dma_cap_set(DMA_ZERO_SUM, plat_data->cap_mask);
 482                         dma_cap_set(DMA_MEMSET, plat_data->cap_mask);
 483                         dma_cap_set(DMA_MEMCPY_CRC32C, plat_data->cap_mask);
 484                         dma_cap_set(DMA_INTERRUPT, plat_data->cap_mask);
 485                         break;
 486                 case IOP13XX_INIT_ADMA_1:
 487                         iop13xx_adma_1_channel.id = adma_idx++;
 488                         iop13xx_devices[plat_idx++] = &iop13xx_adma_1_channel;
 489                         plat_data = &iop13xx_adma_1_data;
 490                         dma_cap_set(DMA_MEMCPY, plat_data->cap_mask);
 491                         dma_cap_set(DMA_XOR, plat_data->cap_mask);
 492                         dma_cap_set(DMA_DUAL_XOR, plat_data->cap_mask);
 493                         dma_cap_set(DMA_ZERO_SUM, plat_data->cap_mask);
 494                         dma_cap_set(DMA_MEMSET, plat_data->cap_mask);
 495                         dma_cap_set(DMA_MEMCPY_CRC32C, plat_data->cap_mask);
 496                         dma_cap_set(DMA_INTERRUPT, plat_data->cap_mask);
 497                         break;
 498                 case IOP13XX_INIT_ADMA_2:
 499                         iop13xx_adma_2_channel.id = adma_idx++;
 500                         iop13xx_devices[plat_idx++] = &iop13xx_adma_2_channel;
 501                         plat_data = &iop13xx_adma_2_data;
 502                         dma_cap_set(DMA_MEMCPY, plat_data->cap_mask);
 503                         dma_cap_set(DMA_XOR, plat_data->cap_mask);
 504                         dma_cap_set(DMA_DUAL_XOR, plat_data->cap_mask);
 505                         dma_cap_set(DMA_ZERO_SUM, plat_data->cap_mask);
 506                         dma_cap_set(DMA_MEMSET, plat_data->cap_mask);
 507                         dma_cap_set(DMA_MEMCPY_CRC32C, plat_data->cap_mask);
 508                         dma_cap_set(DMA_INTERRUPT, plat_data->cap_mask);
 509                         dma_cap_set(DMA_PQ_XOR, plat_data->cap_mask);
 510                         dma_cap_set(DMA_PQ_UPDATE, plat_data->cap_mask);
 511                         dma_cap_set(DMA_PQ_ZERO_SUM, plat_data->cap_mask);
 512                         break;
 513                 }
 514         }
 515
 516 #ifdef CONFIG_MTD_PHYSMAP
 517         iq8134x_flash_resource.end = iq8134x_flash_resource.start +
 518                                 iq8134x_probe_flash_size() - 1;
 519         if (iq8134x_flash_resource.end > iq8134x_flash_resource.start)
 520                 iop13xx_devices[plat_idx++] = &iq8134x_flash;
 521         else
 522                 printk(KERN_ERR "%s: Failed to probe flash size\n", __func__);
 523 #endif
 524
 525         platform_add_devices(iop13xx_devices, plat_idx);
 526 }
 527
 528 static int __init iop13xx_init_uart_setup(char *str)
 529 {
 530         if (str) {
 531                 while (*str != '\0') {
 532                         switch(*str) {
 533                         case '0':
 534                                 init_uart |= IOP13XX_INIT_UART_0;
 535                                 break;
 536                         case '1':
 537                                 init_uart |= IOP13XX_INIT_UART_1;
 538                                 break;
 539                         case ',':
 540                         case '=':
 541                                 break;
 542                         default:
 543                                 PRINTK("\"iop13xx_init_uart\" malformed"
 544                                             " at character: \'%c\'", *str);
 545                                 *(str + 1) = '\0';
 546                                 init_uart = IOP13XX_INIT_UART_DEFAULT;
 547                         }
 548                         str++;
 549                 }
 550         }
 551         return 1;
 552 }
 553
 554 static int __init iop13xx_init_i2c_setup(char *str)
 555 {
 556         if (str) {
 557                 while (*str != '\0') {
 558                         switch(*str) {
 559                         case '0':
 560                                 init_i2c |= IOP13XX_INIT_I2C_0;
 561                                 break;
 562                         case '1':
 563                                 init_i2c |= IOP13XX_INIT_I2C_1;
 564                                 break;
 565                         case '2':
 566                                 init_i2c |= IOP13XX_INIT_I2C_2;
 567                                 break;
 568                         case ',':
 569                         case '=':
 570                                 break;
 571                         default:
 572                                 PRINTK("\"iop13xx_init_i2c\" malformed"
 573                                             " at character: \'%c\'", *str);
 574                                 *(str + 1) = '\0';
 575                                 init_i2c = IOP13XX_INIT_I2C_DEFAULT;
 576                         }
 577                         str++;
 578                 }
 579         }
 580         return 1;
 581 }
 582
 583 static int __init iop13xx_init_adma_setup(char *str)
 584 {
 585         if (str)        {
 586                 while (*str != '\0') {
 587                         switch (*str) {
 588                         case '0':
 589                                 init_adma |= IOP13XX_INIT_ADMA_0;
 590                                 break;
 591                         case '1':
 592                                 init_adma |= IOP13XX_INIT_ADMA_1;
 593                                 break;
 594                         case '2':
 595                                 init_adma |= IOP13XX_INIT_ADMA_2;
 596                                 break;
 597                         case ',':
 598                         case '=':
 599                                 break;
 600                         default:
 601                                 PRINTK("\"iop13xx_init_adma\" malformed"
 602                                             " at character: \'%c\'", *str);
 603                                 *(str + 1) = '\0';
 604                                 init_adma = IOP13XX_INIT_ADMA_DEFAULT;
 605                         }
 606                         str++;
 607                 }
 608         }
 609         return 1;
 610 }
 611
 612 __setup("iop13xx_init_adma", iop13xx_init_adma_setup);
 613 __setup("iop13xx_init_uart", iop13xx_init_uart_setup);
 614 __setup("iop13xx_init_i2c", iop13xx_init_i2c_setup);