kernel/arch/mips/alchemy/devboards/db1200.c

   1 /*
   2  * DBAu1200/PBAu1200 board platform device registration
   3  *
   4  * Copyright (C) 2008-2011 Manuel Lauss
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include <linux/clk.h>
  22 #include <linux/dma-mapping.h>
  23 #include <linux/gpio.h>
  24 #include <linux/i2c.h>
  25 #include <linux/init.h>
  26 #include <linux/module.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/io.h>
  29 #include <linux/leds.h>
  30 #include <linux/mmc/host.h>
  31 #include <linux/mtd/mtd.h>
  32 #include <linux/mtd/nand.h>
  33 #include <linux/mtd/partitions.h>
  34 #include <linux/platform_device.h>
  35 #include <linux/serial_8250.h>
  36 #include <linux/spi/spi.h>
  37 #include <linux/spi/flash.h>
  38 #include <linux/smc91x.h>
  39 #include <linux/ata_platform.h>
  40 #include <asm/mach-au1x00/au1000.h>
  41 #include <asm/mach-au1x00/au1100_mmc.h>
  42 #include <asm/mach-au1x00/au1xxx_dbdma.h>
  43 #include <asm/mach-au1x00/au1xxx_psc.h>
  44 #include <asm/mach-au1x00/au1200fb.h>
  45 #include <asm/mach-au1x00/au1550_spi.h>
  46 #include <asm/mach-db1x00/bcsr.h>
  47
  48 #include "platform.h"
  49
  50 #define BCSR_INT_IDE            0x0001
  51 #define BCSR_INT_ETH            0x0002
  52 #define BCSR_INT_PC0            0x0004
  53 #define BCSR_INT_PC0STSCHG      0x0008
  54 #define BCSR_INT_PC1            0x0010
  55 #define BCSR_INT_PC1STSCHG      0x0020
  56 #define BCSR_INT_DC             0x0040
  57 #define BCSR_INT_FLASHBUSY      0x0080
  58 #define BCSR_INT_PC0INSERT      0x0100
  59 #define BCSR_INT_PC0EJECT       0x0200
  60 #define BCSR_INT_PC1INSERT      0x0400
  61 #define BCSR_INT_PC1EJECT       0x0800
  62 #define BCSR_INT_SD0INSERT      0x1000
  63 #define BCSR_INT_SD0EJECT       0x2000
  64 #define BCSR_INT_SD1INSERT      0x4000
  65 #define BCSR_INT_SD1EJECT       0x8000
  66
  67 #define DB1200_IDE_PHYS_ADDR    0x18800000
  68 #define DB1200_IDE_REG_SHIFT    5
  69 #define DB1200_IDE_PHYS_LEN     (16 << DB1200_IDE_REG_SHIFT)
  70 #define DB1200_ETH_PHYS_ADDR    0x19000300
  71 #define DB1200_NAND_PHYS_ADDR   0x20000000
  72
  73 #define PB1200_IDE_PHYS_ADDR    0x0C800000
  74 #define PB1200_ETH_PHYS_ADDR    0x0D000300
  75 #define PB1200_NAND_PHYS_ADDR   0x1C000000
  76
  77 #define DB1200_INT_BEGIN        (AU1000_MAX_INTR + 1)
  78 #define DB1200_IDE_INT          (DB1200_INT_BEGIN + 0)
  79 #define DB1200_ETH_INT          (DB1200_INT_BEGIN + 1)
  80 #define DB1200_PC0_INT          (DB1200_INT_BEGIN + 2)
  81 #define DB1200_PC0_STSCHG_INT   (DB1200_INT_BEGIN + 3)
  82 #define DB1200_PC1_INT          (DB1200_INT_BEGIN + 4)
  83 #define DB1200_PC1_STSCHG_INT   (DB1200_INT_BEGIN + 5)
  84 #define DB1200_DC_INT           (DB1200_INT_BEGIN + 6)
  85 #define DB1200_FLASHBUSY_INT    (DB1200_INT_BEGIN + 7)
  86 #define DB1200_PC0_INSERT_INT   (DB1200_INT_BEGIN + 8)
  87 #define DB1200_PC0_EJECT_INT    (DB1200_INT_BEGIN + 9)
  88 #define DB1200_PC1_INSERT_INT   (DB1200_INT_BEGIN + 10)
  89 #define DB1200_PC1_EJECT_INT    (DB1200_INT_BEGIN + 11)
  90 #define DB1200_SD0_INSERT_INT   (DB1200_INT_BEGIN + 12)
  91 #define DB1200_SD0_EJECT_INT    (DB1200_INT_BEGIN + 13)
  92 #define PB1200_SD1_INSERT_INT   (DB1200_INT_BEGIN + 14)
  93 #define PB1200_SD1_EJECT_INT    (DB1200_INT_BEGIN + 15)
  94 #define DB1200_INT_END          (DB1200_INT_BEGIN + 15)
  95
  96 const char *get_system_type(void);
  97
  98 static int __init db1200_detect_board(void)
  99 {
 100         int bid;
 101
 102         /* try the DB1200 first */
 103         bcsr_init(DB1200_BCSR_PHYS_ADDR,
 104                   DB1200_BCSR_PHYS_ADDR + DB1200_BCSR_HEXLED_OFS);
 105         if (BCSR_WHOAMI_DB1200 == BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
 106                 unsigned short t = bcsr_read(BCSR_HEXLEDS);
 107                 bcsr_write(BCSR_HEXLEDS, ~t);
 108                 if (bcsr_read(BCSR_HEXLEDS) != t) {
 109                         bcsr_write(BCSR_HEXLEDS, t);
 110                         return 0;
 111                 }
 112         }
 113
 114         /* okay, try the PB1200 then */
 115         bcsr_init(PB1200_BCSR_PHYS_ADDR,
 116                   PB1200_BCSR_PHYS_ADDR + PB1200_BCSR_HEXLED_OFS);
 117         bid = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
 118         if ((bid == BCSR_WHOAMI_PB1200_DDR1) ||
 119             (bid == BCSR_WHOAMI_PB1200_DDR2)) {
 120                 unsigned short t = bcsr_read(BCSR_HEXLEDS);
 121                 bcsr_write(BCSR_HEXLEDS, ~t);
 122                 if (bcsr_read(BCSR_HEXLEDS) != t) {
 123                         bcsr_write(BCSR_HEXLEDS, t);
 124                         return 0;
 125                 }
 126         }
 127
 128         return 1;       /* it's neither */
 129 }
 130
 131 int __init db1200_board_setup(void)
 132 {
 133         unsigned short whoami;
 134
 135         if (db1200_detect_board())
 136                 return -ENODEV;
 137
 138         whoami = bcsr_read(BCSR_WHOAMI);
 139         switch (BCSR_WHOAMI_BOARD(whoami)) {
 140         case BCSR_WHOAMI_PB1200_DDR1:
 141         case BCSR_WHOAMI_PB1200_DDR2:
 142         case BCSR_WHOAMI_DB1200:
 143                 break;
 144         default:
 145                 return -ENODEV;
 146         }
 147
 148         printk(KERN_INFO "Alchemy/AMD/RMI %s Board, CPLD Rev %d"
 149                 "  Board-ID %d  Daughtercard ID %d\n", get_system_type(),
 150                 (whoami >> 4) & 0xf, (whoami >> 8) & 0xf, whoami & 0xf);
 151
 152         return 0;
 153 }
 154
 155 /******************************************************************************/
 156
 157 static struct mtd_partition db1200_spiflash_parts[] = {
 158         {
 159                 .name   = "spi_flash",
 160                 .offset = 0,
 161                 .size   = MTDPART_SIZ_FULL,
 162         },
 163 };
 164
 165 static struct flash_platform_data db1200_spiflash_data = {
 166         .name           = "s25fl001",
 167         .parts          = db1200_spiflash_parts,
 168         .nr_parts       = ARRAY_SIZE(db1200_spiflash_parts),
 169         .type           = "m25p10",
 170 };
 171
 172 static struct spi_board_info db1200_spi_devs[] __initdata = {
 173         {
 174                 /* TI TMP121AIDBVR temp sensor */
 175                 .modalias       = "tmp121",
 176                 .max_speed_hz   = 2000000,
 177                 .bus_num        = 0,
 178                 .chip_select    = 0,
 179                 .mode           = 0,
 180         },
 181         {
 182                 /* Spansion S25FL001D0FMA SPI flash */
 183                 .modalias       = "m25p80",
 184                 .max_speed_hz   = 50000000,
 185                 .bus_num        = 0,
 186                 .chip_select    = 1,
 187                 .mode           = 0,
 188                 .platform_data  = &db1200_spiflash_data,
 189         },
 190 };
 191
 192 static struct i2c_board_info db1200_i2c_devs[] __initdata = {
 193         { I2C_BOARD_INFO("24c04", 0x52),  }, /* AT24C04-10 I2C eeprom */
 194         { I2C_BOARD_INFO("ne1619", 0x2d), }, /* adm1025-compat hwmon */
 195         { I2C_BOARD_INFO("wm8731", 0x1b), }, /* I2S audio codec WM8731 */
 196 };
 197
 198 /**********************************************************************/
 199
 200 static void au1200_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
 201                                  unsigned int ctrl)
 202 {
 203         struct nand_chip *this = mtd->priv;
 204         unsigned long ioaddr = (unsigned long)this->IO_ADDR_W;
 205
 206         ioaddr &= 0xffffff00;
 207
 208         if (ctrl & NAND_CLE) {
 209                 ioaddr += MEM_STNAND_CMD;
 210         } else if (ctrl & NAND_ALE) {
 211                 ioaddr += MEM_STNAND_ADDR;
 212         } else {
 213                 /* assume we want to r/w real data  by default */
 214                 ioaddr += MEM_STNAND_DATA;
 215         }
 216         this->IO_ADDR_R = this->IO_ADDR_W = (void __iomem *)ioaddr;
 217         if (cmd != NAND_CMD_NONE) {
 218                 __raw_writeb(cmd, this->IO_ADDR_W);
 219                 wmb();
 220         }
 221 }
 222
 223 static int au1200_nand_device_ready(struct mtd_info *mtd)
 224 {
 225         return alchemy_rdsmem(AU1000_MEM_STSTAT) & 1;
 226 }
 227
 228 static struct mtd_partition db1200_nand_parts[] = {
 229         {
 230                 .name   = "NAND FS 0",
 231                 .offset = 0,
 232                 .size   = 8 * 1024 * 1024,
 233         },
 234         {
 235                 .name   = "NAND FS 1",
 236                 .offset = MTDPART_OFS_APPEND,
 237                 .size   = MTDPART_SIZ_FULL
 238         },
 239 };
 240
 241 struct platform_nand_data db1200_nand_platdata = {
 242         .chip = {
 243                 .nr_chips       = 1,
 244                 .chip_offset    = 0,
 245                 .nr_partitions  = ARRAY_SIZE(db1200_nand_parts),
 246                 .partitions     = db1200_nand_parts,
 247                 .chip_delay     = 20,
 248         },
 249         .ctrl = {
 250                 .dev_ready      = au1200_nand_device_ready,
 251                 .cmd_ctrl       = au1200_nand_cmd_ctrl,
 252         },
 253 };
 254
 255 static struct resource db1200_nand_res[] = {
 256         [0] = {
 257                 .start  = DB1200_NAND_PHYS_ADDR,
 258                 .end    = DB1200_NAND_PHYS_ADDR + 0xff,
 259                 .flags  = IORESOURCE_MEM,
 260         },
 261 };
 262
 263 static struct platform_device db1200_nand_dev = {
 264         .name           = "gen_nand",
 265         .num_resources  = ARRAY_SIZE(db1200_nand_res),
 266         .resource       = db1200_nand_res,
 267         .id             = -1,
 268         .dev            = {
 269                 .platform_data = &db1200_nand_platdata,
 270         }
 271 };
 272
 273 /**********************************************************************/
 274
 275 static struct smc91x_platdata db1200_eth_data = {
 276         .flags  = SMC91X_NOWAIT | SMC91X_USE_16BIT,
 277         .leda   = RPC_LED_100_10,
 278         .ledb   = RPC_LED_TX_RX,
 279 };
 280
 281 static struct resource db1200_eth_res[] = {
 282         [0] = {
 283                 .start  = DB1200_ETH_PHYS_ADDR,
 284                 .end    = DB1200_ETH_PHYS_ADDR + 0xf,
 285                 .flags  = IORESOURCE_MEM,
 286         },
 287         [1] = {
 288                 .start  = DB1200_ETH_INT,
 289                 .end    = DB1200_ETH_INT,
 290                 .flags  = IORESOURCE_IRQ,
 291         },
 292 };
 293
 294 static struct platform_device db1200_eth_dev = {
 295         .dev    = {
 296                 .platform_data  = &db1200_eth_data,
 297         },
 298         .name           = "smc91x",
 299         .id             = -1,
 300         .num_resources  = ARRAY_SIZE(db1200_eth_res),
 301         .resource       = db1200_eth_res,
 302 };
 303
 304 /**********************************************************************/
 305
 306 static struct pata_platform_info db1200_ide_info = {
 307         .ioport_shift   = DB1200_IDE_REG_SHIFT,
 308 };
 309
 310 #define IDE_ALT_START   (14 << DB1200_IDE_REG_SHIFT)
 311 static struct resource db1200_ide_res[] = {
 312         [0] = {
 313                 .start  = DB1200_IDE_PHYS_ADDR,
 314                 .end    = DB1200_IDE_PHYS_ADDR + IDE_ALT_START - 1,
 315                 .flags  = IORESOURCE_MEM,
 316         },
 317         [1] = {
 318                 .start  = DB1200_IDE_PHYS_ADDR + IDE_ALT_START,
 319                 .end    = DB1200_IDE_PHYS_ADDR + DB1200_IDE_PHYS_LEN - 1,
 320                 .flags  = IORESOURCE_MEM,
 321         },
 322         [2] = {
 323                 .start  = DB1200_IDE_INT,
 324                 .end    = DB1200_IDE_INT,
 325                 .flags  = IORESOURCE_IRQ,
 326         },
 327 };
 328
 329 static u64 au1200_ide_dmamask = DMA_BIT_MASK(32);
 330
 331 static struct platform_device db1200_ide_dev = {
 332         .name           = "pata_platform",
 333         .id             = 0,
 334         .dev = {
 335                 .dma_mask               = &au1200_ide_dmamask,
 336                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 337                 .platform_data          = &db1200_ide_info,
 338         },
 339         .num_resources  = ARRAY_SIZE(db1200_ide_res),
 340         .resource       = db1200_ide_res,
 341 };
 342
 343 /**********************************************************************/
 344
 345 /* SD carddetects:  they're supposed to be edge-triggered, but ack
 346  * doesn't seem to work (CPLD Rev 2).  Instead, the screaming one
 347  * is disabled and its counterpart enabled.  The 500ms timeout is
 348  * because the carddetect isn't debounced in hardware.
 349  */
 350 static irqreturn_t db1200_mmc_cd(int irq, void *ptr)
 351 {
 352         void(*mmc_cd)(struct mmc_host *, unsigned long);
 353
 354         if (irq == DB1200_SD0_INSERT_INT) {
 355                 disable_irq_nosync(DB1200_SD0_INSERT_INT);
 356                 enable_irq(DB1200_SD0_EJECT_INT);
 357         } else {
 358                 disable_irq_nosync(DB1200_SD0_EJECT_INT);
 359                 enable_irq(DB1200_SD0_INSERT_INT);
 360         }
 361
 362         /* link against CONFIG_MMC=m */
 363         mmc_cd = symbol_get(mmc_detect_change);
 364         if (mmc_cd) {
 365                 mmc_cd(ptr, msecs_to_jiffies(500));
 366                 symbol_put(mmc_detect_change);
 367         }
 368
 369         return IRQ_HANDLED;
 370 }
 371
 372 static int db1200_mmc_cd_setup(void *mmc_host, int en)
 373 {
 374         int ret;
 375
 376         if (en) {
 377                 ret = request_irq(DB1200_SD0_INSERT_INT, db1200_mmc_cd,
 378                                   0, "sd_insert", mmc_host);
 379                 if (ret)
 380                         goto out;
 381
 382                 ret = request_irq(DB1200_SD0_EJECT_INT, db1200_mmc_cd,
 383                                   0, "sd_eject", mmc_host);
 384                 if (ret) {
 385                         free_irq(DB1200_SD0_INSERT_INT, mmc_host);
 386                         goto out;
 387                 }
 388
 389                 if (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD0INSERT)
 390                         enable_irq(DB1200_SD0_EJECT_INT);
 391                 else
 392                         enable_irq(DB1200_SD0_INSERT_INT);
 393
 394         } else {
 395                 free_irq(DB1200_SD0_INSERT_INT, mmc_host);
 396                 free_irq(DB1200_SD0_EJECT_INT, mmc_host);
 397         }
 398         ret = 0;
 399 out:
 400         return ret;
 401 }
 402
 403 static void db1200_mmc_set_power(void *mmc_host, int state)
 404 {
 405         if (state) {
 406                 bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD0PWR);
 407                 msleep(400);    /* stabilization time */
 408         } else
 409                 bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD0PWR, 0);
 410 }
 411
 412 static int db1200_mmc_card_readonly(void *mmc_host)
 413 {
 414         return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 1 : 0;
 415 }
 416
 417 static int db1200_mmc_card_inserted(void *mmc_host)
 418 {
 419         return (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD0INSERT) ? 1 : 0;
 420 }
 421
 422 static void db1200_mmcled_set(struct led_classdev *led,
 423                               enum led_brightness brightness)
 424 {
 425         if (brightness != LED_OFF)
 426                 bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0);
 427         else
 428                 bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0);
 429 }
 430
 431 static struct led_classdev db1200_mmc_led = {
 432         .brightness_set = db1200_mmcled_set,
 433 };
 434
 435 /* -- */
 436
 437 static irqreturn_t pb1200_mmc1_cd(int irq, void *ptr)
 438 {
 439         void(*mmc_cd)(struct mmc_host *, unsigned long);
 440
 441         if (irq == PB1200_SD1_INSERT_INT) {
 442                 disable_irq_nosync(PB1200_SD1_INSERT_INT);
 443                 enable_irq(PB1200_SD1_EJECT_INT);
 444         } else {
 445                 disable_irq_nosync(PB1200_SD1_EJECT_INT);
 446                 enable_irq(PB1200_SD1_INSERT_INT);
 447         }
 448
 449         /* link against CONFIG_MMC=m */
 450         mmc_cd = symbol_get(mmc_detect_change);
 451         if (mmc_cd) {
 452                 mmc_cd(ptr, msecs_to_jiffies(500));
 453                 symbol_put(mmc_detect_change);
 454         }
 455
 456         return IRQ_HANDLED;
 457 }
 458
 459 static int pb1200_mmc1_cd_setup(void *mmc_host, int en)
 460 {
 461         int ret;
 462
 463         if (en) {
 464                 ret = request_irq(PB1200_SD1_INSERT_INT, pb1200_mmc1_cd, 0,
 465                                   "sd1_insert", mmc_host);
 466                 if (ret)
 467                         goto out;
 468
 469                 ret = request_irq(PB1200_SD1_EJECT_INT, pb1200_mmc1_cd, 0,
 470                                   "sd1_eject", mmc_host);
 471                 if (ret) {
 472                         free_irq(PB1200_SD1_INSERT_INT, mmc_host);
 473                         goto out;
 474                 }
 475
 476                 if (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD1INSERT)
 477                         enable_irq(PB1200_SD1_EJECT_INT);
 478                 else
 479                         enable_irq(PB1200_SD1_INSERT_INT);
 480
 481         } else {
 482                 free_irq(PB1200_SD1_INSERT_INT, mmc_host);
 483                 free_irq(PB1200_SD1_EJECT_INT, mmc_host);
 484         }
 485         ret = 0;
 486 out:
 487         return ret;
 488 }
 489
 490 static void pb1200_mmc1led_set(struct led_classdev *led,
 491                         enum led_brightness brightness)
 492 {
 493         if (brightness != LED_OFF)
 494                         bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED1, 0);
 495         else
 496                         bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED1);
 497 }
 498
 499 static struct led_classdev pb1200_mmc1_led = {
 500         .brightness_set = pb1200_mmc1led_set,
 501 };
 502
 503 static void pb1200_mmc1_set_power(void *mmc_host, int state)
 504 {
 505         if (state) {
 506                 bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD1PWR);
 507                 msleep(400);    /* stabilization time */
 508         } else
 509                 bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD1PWR, 0);
 510 }
 511
 512 static int pb1200_mmc1_card_readonly(void *mmc_host)
 513 {
 514         return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD1WP) ? 1 : 0;
 515 }
 516
 517 static int pb1200_mmc1_card_inserted(void *mmc_host)
 518 {
 519         return (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD1INSERT) ? 1 : 0;
 520 }
 521
 522
 523 static struct au1xmmc_platform_data db1200_mmc_platdata[2] = {
 524         [0] = {
 525                 .cd_setup       = db1200_mmc_cd_setup,
 526                 .set_power      = db1200_mmc_set_power,
 527                 .card_inserted  = db1200_mmc_card_inserted,
 528                 .card_readonly  = db1200_mmc_card_readonly,
 529                 .led            = &db1200_mmc_led,
 530         },
 531         [1] = {
 532                 .cd_setup       = pb1200_mmc1_cd_setup,
 533                 .set_power      = pb1200_mmc1_set_power,
 534                 .card_inserted  = pb1200_mmc1_card_inserted,
 535                 .card_readonly  = pb1200_mmc1_card_readonly,
 536                 .led            = &pb1200_mmc1_led,
 537         },
 538 };
 539
 540 static struct resource au1200_mmc0_resources[] = {
 541         [0] = {
 542                 .start  = AU1100_SD0_PHYS_ADDR,
 543                 .end    = AU1100_SD0_PHYS_ADDR + 0xfff,
 544                 .flags  = IORESOURCE_MEM,
 545         },
 546         [1] = {
 547                 .start  = AU1200_SD_INT,
 548                 .end    = AU1200_SD_INT,
 549                 .flags  = IORESOURCE_IRQ,
 550         },
 551         [2] = {
 552                 .start  = AU1200_DSCR_CMD0_SDMS_TX0,
 553                 .end    = AU1200_DSCR_CMD0_SDMS_TX0,
 554                 .flags  = IORESOURCE_DMA,
 555         },
 556         [3] = {
 557                 .start  = AU1200_DSCR_CMD0_SDMS_RX0,
 558                 .end    = AU1200_DSCR_CMD0_SDMS_RX0,
 559                 .flags  = IORESOURCE_DMA,
 560         }
 561 };
 562
 563 static u64 au1xxx_mmc_dmamask =  DMA_BIT_MASK(32);
 564
 565 static struct platform_device db1200_mmc0_dev = {
 566         .name           = "au1xxx-mmc",
 567         .id             = 0,
 568         .dev = {
 569                 .dma_mask               = &au1xxx_mmc_dmamask,
 570                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 571                 .platform_data          = &db1200_mmc_platdata[0],
 572         },
 573         .num_resources  = ARRAY_SIZE(au1200_mmc0_resources),
 574         .resource       = au1200_mmc0_resources,
 575 };
 576
 577 static struct resource au1200_mmc1_res[] = {
 578         [0] = {
 579                 .start  = AU1100_SD1_PHYS_ADDR,
 580                 .end    = AU1100_SD1_PHYS_ADDR + 0xfff,
 581                 .flags  = IORESOURCE_MEM,
 582         },
 583         [1] = {
 584                 .start  = AU1200_SD_INT,
 585                 .end    = AU1200_SD_INT,
 586                 .flags  = IORESOURCE_IRQ,
 587         },
 588         [2] = {
 589                 .start  = AU1200_DSCR_CMD0_SDMS_TX1,
 590                 .end    = AU1200_DSCR_CMD0_SDMS_TX1,
 591                 .flags  = IORESOURCE_DMA,
 592         },
 593         [3] = {
 594                 .start  = AU1200_DSCR_CMD0_SDMS_RX1,
 595                 .end    = AU1200_DSCR_CMD0_SDMS_RX1,
 596                 .flags  = IORESOURCE_DMA,
 597         }
 598 };
 599
 600 static struct platform_device pb1200_mmc1_dev = {
 601         .name           = "au1xxx-mmc",
 602         .id             = 1,
 603         .dev = {
 604                 .dma_mask               = &au1xxx_mmc_dmamask,
 605                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 606                 .platform_data          = &db1200_mmc_platdata[1],
 607         },
 608         .num_resources  = ARRAY_SIZE(au1200_mmc1_res),
 609         .resource       = au1200_mmc1_res,
 610 };
 611
 612 /**********************************************************************/
 613
 614 static int db1200fb_panel_index(void)
 615 {
 616         return (bcsr_read(BCSR_SWITCHES) >> 8) & 0x0f;
 617 }
 618
 619 static int db1200fb_panel_init(void)
 620 {
 621         /* Apply power */
 622         bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
 623                                 BCSR_BOARD_LCDBL);
 624         return 0;
 625 }
 626
 627 static int db1200fb_panel_shutdown(void)
 628 {
 629         /* Remove power */
 630         bcsr_mod(BCSR_BOARD, BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
 631                              BCSR_BOARD_LCDBL, 0);
 632         return 0;
 633 }
 634
 635 static struct au1200fb_platdata db1200fb_pd = {
 636         .panel_index    = db1200fb_panel_index,
 637         .panel_init     = db1200fb_panel_init,
 638         .panel_shutdown = db1200fb_panel_shutdown,
 639 };
 640
 641 static struct resource au1200_lcd_res[] = {
 642         [0] = {
 643                 .start  = AU1200_LCD_PHYS_ADDR,
 644                 .end    = AU1200_LCD_PHYS_ADDR + 0x800 - 1,
 645                 .flags  = IORESOURCE_MEM,
 646         },
 647         [1] = {
 648                 .start  = AU1200_LCD_INT,
 649                 .end    = AU1200_LCD_INT,
 650                 .flags  = IORESOURCE_IRQ,
 651         }
 652 };
 653
 654 static u64 au1200_lcd_dmamask = DMA_BIT_MASK(32);
 655
 656 static struct platform_device au1200_lcd_dev = {
 657         .name           = "au1200-lcd",
 658         .id             = 0,
 659         .dev = {
 660                 .dma_mask               = &au1200_lcd_dmamask,
 661                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 662                 .platform_data          = &db1200fb_pd,
 663         },
 664         .num_resources  = ARRAY_SIZE(au1200_lcd_res),
 665         .resource       = au1200_lcd_res,
 666 };
 667
 668 /**********************************************************************/
 669
 670 static struct resource au1200_psc0_res[] = {
 671         [0] = {
 672                 .start  = AU1550_PSC0_PHYS_ADDR,
 673                 .end    = AU1550_PSC0_PHYS_ADDR + 0xfff,
 674                 .flags  = IORESOURCE_MEM,
 675         },
 676         [1] = {
 677                 .start  = AU1200_PSC0_INT,
 678                 .end    = AU1200_PSC0_INT,
 679                 .flags  = IORESOURCE_IRQ,
 680         },
 681         [2] = {
 682                 .start  = AU1200_DSCR_CMD0_PSC0_TX,
 683                 .end    = AU1200_DSCR_CMD0_PSC0_TX,
 684                 .flags  = IORESOURCE_DMA,
 685         },
 686         [3] = {
 687                 .start  = AU1200_DSCR_CMD0_PSC0_RX,
 688                 .end    = AU1200_DSCR_CMD0_PSC0_RX,
 689                 .flags  = IORESOURCE_DMA,
 690         },
 691 };
 692
 693 static struct platform_device db1200_i2c_dev = {
 694         .name           = "au1xpsc_smbus",
 695         .id             = 0,    /* bus number */
 696         .num_resources  = ARRAY_SIZE(au1200_psc0_res),
 697         .resource       = au1200_psc0_res,
 698 };
 699
 700 static void db1200_spi_cs_en(struct au1550_spi_info *spi, int cs, int pol)
 701 {
 702         if (cs)
 703                 bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_SPISEL);
 704         else
 705                 bcsr_mod(BCSR_RESETS, BCSR_RESETS_SPISEL, 0);
 706 }
 707
 708 static struct au1550_spi_info db1200_spi_platdata = {
 709         .mainclk_hz     = 50000000,     /* PSC0 clock */
 710         .num_chipselect = 2,
 711         .activate_cs    = db1200_spi_cs_en,
 712 };
 713
 714 static u64 spi_dmamask = DMA_BIT_MASK(32);
 715
 716 static struct platform_device db1200_spi_dev = {
 717         .dev    = {
 718                 .dma_mask               = &spi_dmamask,
 719                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 720                 .platform_data          = &db1200_spi_platdata,
 721         },
 722         .name           = "au1550-spi",
 723         .id             = 0,    /* bus number */
 724         .num_resources  = ARRAY_SIZE(au1200_psc0_res),
 725         .resource       = au1200_psc0_res,
 726 };
 727
 728 static struct resource au1200_psc1_res[] = {
 729         [0] = {
 730                 .start  = AU1550_PSC1_PHYS_ADDR,
 731                 .end    = AU1550_PSC1_PHYS_ADDR + 0xfff,
 732                 .flags  = IORESOURCE_MEM,
 733         },
 734         [1] = {
 735                 .start  = AU1200_PSC1_INT,
 736                 .end    = AU1200_PSC1_INT,
 737                 .flags  = IORESOURCE_IRQ,
 738         },
 739         [2] = {
 740                 .start  = AU1200_DSCR_CMD0_PSC1_TX,
 741                 .end    = AU1200_DSCR_CMD0_PSC1_TX,
 742                 .flags  = IORESOURCE_DMA,
 743         },
 744         [3] = {
 745                 .start  = AU1200_DSCR_CMD0_PSC1_RX,
 746                 .end    = AU1200_DSCR_CMD0_PSC1_RX,
 747                 .flags  = IORESOURCE_DMA,
 748         },
 749 };
 750
 751 /* AC97 or I2S device */
 752 static struct platform_device db1200_audio_dev = {
 753         /* name assigned later based on switch setting */
 754         .id             = 1,    /* PSC ID */
 755         .num_resources  = ARRAY_SIZE(au1200_psc1_res),
 756         .resource       = au1200_psc1_res,
 757 };
 758
 759 /* DB1200 ASoC card device */
 760 static struct platform_device db1200_sound_dev = {
 761         /* name assigned later based on switch setting */
 762         .id             = 1,    /* PSC ID */
 763 };
 764
 765 static struct platform_device db1200_stac_dev = {
 766         .name           = "ac97-codec",
 767         .id             = 1,    /* on PSC1 */
 768 };
 769
 770 static struct platform_device db1200_audiodma_dev = {
 771         .name           = "au1xpsc-pcm",
 772         .id             = 1,    /* PSC ID */
 773 };
 774
 775 static struct platform_device *db1200_devs[] __initdata = {
 776         NULL,           /* PSC0, selected by S6.8 */
 777         &db1200_ide_dev,
 778         &db1200_mmc0_dev,
 779         &au1200_lcd_dev,
 780         &db1200_eth_dev,
 781         &db1200_nand_dev,
 782         &db1200_audiodma_dev,
 783         &db1200_audio_dev,
 784         &db1200_stac_dev,
 785         &db1200_sound_dev,
 786 };
 787
 788 static struct platform_device *pb1200_devs[] __initdata = {
 789         &pb1200_mmc1_dev,
 790 };
 791
 792 /* Some peripheral base addresses differ on the PB1200 */
 793 static int __init pb1200_res_fixup(void)
 794 {
 795         /* CPLD Revs earlier than 4 cause problems */
 796         if (BCSR_WHOAMI_CPLD(bcsr_read(BCSR_WHOAMI)) <= 3) {
 797                 printk(KERN_ERR "WARNING!!!\n");
 798                 printk(KERN_ERR "WARNING!!!\n");
 799                 printk(KERN_ERR "PB1200 must be at CPLD rev 4. Please have\n");
 800                 printk(KERN_ERR "the board updated to latest revisions.\n");
 801                 printk(KERN_ERR "This software will not work reliably\n");
 802                 printk(KERN_ERR "on anything older than CPLD rev 4.!\n");
 803                 printk(KERN_ERR "WARNING!!!\n");
 804                 printk(KERN_ERR "WARNING!!!\n");
 805                 return 1;
 806         }
 807
 808         db1200_nand_res[0].start = PB1200_NAND_PHYS_ADDR;
 809         db1200_nand_res[0].end   = PB1200_NAND_PHYS_ADDR + 0xff;
 810         db1200_ide_res[0].start = PB1200_IDE_PHYS_ADDR;
 811         db1200_ide_res[0].end   = PB1200_IDE_PHYS_ADDR + DB1200_IDE_PHYS_LEN - 1;
 812         db1200_eth_res[0].start = PB1200_ETH_PHYS_ADDR;
 813         db1200_eth_res[0].end   = PB1200_ETH_PHYS_ADDR + 0xff;
 814         return 0;
 815 }
 816
 817 int __init db1200_dev_setup(void)
 818 {
 819         unsigned long pfc;
 820         unsigned short sw;
 821         int swapped, bid;
 822         struct clk *c;
 823
 824         bid = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
 825         if ((bid == BCSR_WHOAMI_PB1200_DDR1) ||
 826             (bid == BCSR_WHOAMI_PB1200_DDR2)) {
 827                 if (pb1200_res_fixup())
 828                         return -ENODEV;
 829         }
 830
 831         /* GPIO7 is low-level triggered CPLD cascade */
 832         irq_set_irq_type(AU1200_GPIO7_INT, IRQ_TYPE_LEVEL_LOW);
 833         bcsr_init_irq(DB1200_INT_BEGIN, DB1200_INT_END, AU1200_GPIO7_INT);
 834
 835         /* SMBus/SPI on PSC0, Audio on PSC1 */
 836         pfc = alchemy_rdsys(AU1000_SYS_PINFUNC);
 837         pfc &= ~(SYS_PINFUNC_P0A | SYS_PINFUNC_P0B);
 838         pfc &= ~(SYS_PINFUNC_P1A | SYS_PINFUNC_P1B | SYS_PINFUNC_FS3);
 839         pfc |= SYS_PINFUNC_P1C; /* SPI is configured later */
 840         alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
 841
 842         /* get 50MHz for I2C driver on PSC0 */
 843         c = clk_get(NULL, "psc0_intclk");
 844         if (!IS_ERR(c)) {
 845                 pfc = clk_round_rate(c, 50000000);
 846                 if ((pfc < 1) || (abs(50000000 - pfc) > 2500000))
 847                         pr_warn("DB1200: cant get I2C close to 50MHz\n");
 848                 else
 849                         clk_set_rate(c, pfc);
 850                 clk_prepare_enable(c);
 851                 clk_put(c);
 852         }
 853
 854         /* insert/eject pairs: one of both is always screaming.  To avoid
 855          * issues they must not be automatically enabled when initially
 856          * requested.
 857          */
 858         irq_set_status_flags(DB1200_SD0_INSERT_INT, IRQ_NOAUTOEN);
 859         irq_set_status_flags(DB1200_SD0_EJECT_INT, IRQ_NOAUTOEN);
 860         irq_set_status_flags(DB1200_PC0_INSERT_INT, IRQ_NOAUTOEN);
 861         irq_set_status_flags(DB1200_PC0_EJECT_INT, IRQ_NOAUTOEN);
 862         irq_set_status_flags(DB1200_PC1_INSERT_INT, IRQ_NOAUTOEN);
 863         irq_set_status_flags(DB1200_PC1_EJECT_INT, IRQ_NOAUTOEN);
 864
 865         i2c_register_board_info(0, db1200_i2c_devs,
 866                                 ARRAY_SIZE(db1200_i2c_devs));
 867         spi_register_board_info(db1200_spi_devs,
 868                                 ARRAY_SIZE(db1200_i2c_devs));
 869
 870         /* SWITCHES:    S6.8 I2C/SPI selector  (OFF=I2C  ON=SPI)
 871          *              S6.7 AC97/I2S selector (OFF=AC97 ON=I2S)
 872          *              or S12 on the PB1200.
 873          */
 874
 875         /* NOTE: GPIO215 controls OTG VBUS supply.  In SPI mode however
 876          * this pin is claimed by PSC0 (unused though, but pinmux doesn't
 877          * allow to free it without crippling the SPI interface).
 878          * As a result, in SPI mode, OTG simply won't work (PSC0 uses
 879          * it as an input pin which is pulled high on the boards).
 880          */
 881         pfc = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PINFUNC_P0A;
 882
 883         /* switch off OTG VBUS supply */
 884         gpio_request(215, "otg-vbus");
 885         gpio_direction_output(215, 1);
 886
 887         printk(KERN_INFO "%s device configuration:\n", get_system_type());
 888
 889         sw = bcsr_read(BCSR_SWITCHES);
 890         if (sw & BCSR_SWITCHES_DIP_8) {
 891                 db1200_devs[0] = &db1200_i2c_dev;
 892                 bcsr_mod(BCSR_RESETS, BCSR_RESETS_PSC0MUX, 0);
 893
 894                 pfc |= (2 << 17);       /* GPIO2 block owns GPIO215 */
 895
 896                 printk(KERN_INFO " S6.8 OFF: PSC0 mode I2C\n");
 897                 printk(KERN_INFO "   OTG port VBUS supply available!\n");
 898         } else {
 899                 db1200_devs[0] = &db1200_spi_dev;
 900                 bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_PSC0MUX);
 901
 902                 pfc |= (1 << 17);       /* PSC0 owns GPIO215 */
 903
 904                 printk(KERN_INFO " S6.8 ON : PSC0 mode SPI\n");
 905                 printk(KERN_INFO "   OTG port VBUS supply disabled\n");
 906         }
 907         alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
 908
 909         /* Audio: DIP7 selects I2S(0)/AC97(1), but need I2C for I2S!
 910          * so: DIP7=1 || DIP8=0 => AC97, DIP7=0 && DIP8=1 => I2S
 911          */
 912         sw &= BCSR_SWITCHES_DIP_8 | BCSR_SWITCHES_DIP_7;
 913         if (sw == BCSR_SWITCHES_DIP_8) {
 914                 bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_PSC1MUX);
 915                 db1200_audio_dev.name = "au1xpsc_i2s";
 916                 db1200_sound_dev.name = "db1200-i2s";
 917                 printk(KERN_INFO " S6.7 ON : PSC1 mode I2S\n");
 918         } else {
 919                 bcsr_mod(BCSR_RESETS, BCSR_RESETS_PSC1MUX, 0);
 920                 db1200_audio_dev.name = "au1xpsc_ac97";
 921                 db1200_sound_dev.name = "db1200-ac97";
 922                 printk(KERN_INFO " S6.7 OFF: PSC1 mode AC97\n");
 923         }
 924
 925         /* Audio PSC clock is supplied externally. (FIXME: platdata!!) */
 926         __raw_writel(PSC_SEL_CLK_SERCLK,
 927             (void __iomem *)KSEG1ADDR(AU1550_PSC1_PHYS_ADDR) + PSC_SEL_OFFSET);
 928         wmb();
 929
 930         db1x_register_pcmcia_socket(
 931                 AU1000_PCMCIA_ATTR_PHYS_ADDR,
 932                 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
 933                 AU1000_PCMCIA_MEM_PHYS_ADDR,
 934                 AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x000400000 - 1,
 935                 AU1000_PCMCIA_IO_PHYS_ADDR,
 936                 AU1000_PCMCIA_IO_PHYS_ADDR   + 0x000010000 - 1,
 937                 DB1200_PC0_INT, DB1200_PC0_INSERT_INT,
 938                 /*DB1200_PC0_STSCHG_INT*/0, DB1200_PC0_EJECT_INT, 0);
 939
 940         db1x_register_pcmcia_socket(
 941                 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000,
 942                 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1,
 943                 AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004000000,
 944                 AU1000_PCMCIA_MEM_PHYS_ADDR  + 0x004400000 - 1,
 945                 AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004000000,
 946                 AU1000_PCMCIA_IO_PHYS_ADDR   + 0x004010000 - 1,
 947                 DB1200_PC1_INT, DB1200_PC1_INSERT_INT,
 948                 /*DB1200_PC1_STSCHG_INT*/0, DB1200_PC1_EJECT_INT, 1);
 949
 950         swapped = bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1200_SWAPBOOT;
 951         db1x_register_norflash(64 << 20, 2, swapped);
 952
 953         platform_add_devices(db1200_devs, ARRAY_SIZE(db1200_devs));
 954
 955         /* PB1200 is a DB1200 with a 2nd MMC and Camera connector */
 956         if ((bid == BCSR_WHOAMI_PB1200_DDR1) ||
 957             (bid == BCSR_WHOAMI_PB1200_DDR2))
 958                 platform_add_devices(pb1200_devs, ARRAY_SIZE(pb1200_devs));
 959
 960         return 0;
 961 }