arch/arm/mach-pxa/zeus.c

   1 /*
   2  *  Support for the Arcom ZEUS.
   3  *
   4  *  Copyright (C) 2006 Arcom Control Systems Ltd.
   5  *
   6  *  Loosely based on Arcom's 2.6.16.28.
   7  *  Maintained by Marc Zyngier <maz@misterjones.org>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License version 2 as
  11  *  published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/cpufreq.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/irq.h>
  17 #include <linux/pm.h>
  18 #include <linux/gpio.h>
  19 #include <linux/serial_8250.h>
  20 #include <linux/dm9000.h>
  21 #include <linux/mmc/host.h>
  22 #include <linux/spi/spi.h>
  23 #include <linux/mtd/mtd.h>
  24 #include <linux/mtd/partitions.h>
  25 #include <linux/mtd/physmap.h>
  26 #include <linux/i2c.h>
  27 #include <linux/i2c/pca953x.h>
  28 #include <linux/apm-emulation.h>
  29 #include <linux/can/platform/mcp251x.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/map.h>
  34
  35 #include <plat/i2c.h>
  36
  37 #include <mach/pxa2xx-regs.h>
  38 #include <mach/regs-uart.h>
  39 #include <mach/ohci.h>
  40 #include <mach/mmc.h>
  41 #include <mach/pxa27x-udc.h>
  42 #include <mach/udc.h>
  43 #include <mach/pxafb.h>
  44 #include <mach/pxa2xx_spi.h>
  45 #include <mach/mfp-pxa27x.h>
  46 #include <mach/pm.h>
  47 #include <mach/audio.h>
  48 #include <mach/arcom-pcmcia.h>
  49 #include <mach/zeus.h>
  50
  51 #include "generic.h"
  52
  53 /*
  54  * Interrupt handling
  55  */
  56
  57 static unsigned long zeus_irq_enabled_mask;
  58 static const int zeus_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, };
  59 static const int zeus_isa_irq_map[] = {
  60         0,              /* ISA irq #0, invalid */
  61         0,              /* ISA irq #1, invalid */
  62         0,              /* ISA irq #2, invalid */
  63         1 << 0,         /* ISA irq #3 */
  64         1 << 1,         /* ISA irq #4 */
  65         1 << 2,         /* ISA irq #5 */
  66         1 << 3,         /* ISA irq #6 */
  67         1 << 4,         /* ISA irq #7 */
  68         0,              /* ISA irq #8, invalid */
  69         0,              /* ISA irq #9, invalid */
  70         1 << 5,         /* ISA irq #10 */
  71         1 << 6,         /* ISA irq #11 */
  72         1 << 7,         /* ISA irq #12 */
  73 };
  74
  75 static inline int zeus_irq_to_bitmask(unsigned int irq)
  76 {
  77         return zeus_isa_irq_map[irq - PXA_ISA_IRQ(0)];
  78 }
  79
  80 static inline int zeus_bit_to_irq(int bit)
  81 {
  82         return zeus_isa_irqs[bit] + PXA_ISA_IRQ(0);
  83 }
  84
  85 static void zeus_ack_irq(unsigned int irq)
  86 {
  87         __raw_writew(zeus_irq_to_bitmask(irq), ZEUS_CPLD_ISA_IRQ);
  88 }
  89
  90 static void zeus_mask_irq(unsigned int irq)
  91 {
  92         zeus_irq_enabled_mask &= ~(zeus_irq_to_bitmask(irq));
  93 }
  94
  95 static void zeus_unmask_irq(unsigned int irq)
  96 {
  97         zeus_irq_enabled_mask |= zeus_irq_to_bitmask(irq);
  98 }
  99
 100 static inline unsigned long zeus_irq_pending(void)
 101 {
 102         return __raw_readw(ZEUS_CPLD_ISA_IRQ) & zeus_irq_enabled_mask;
 103 }
 104
 105 static void zeus_irq_handler(unsigned int irq, struct irq_desc *desc)
 106 {
 107         unsigned long pending;
 108
 109         pending = zeus_irq_pending();
 110         do {
 111                 /* we're in a chained irq handler,
 112                  * so ack the interrupt by hand */
 113                 desc->chip->ack(gpio_to_irq(ZEUS_ISA_GPIO));
 114
 115                 if (likely(pending)) {
 116                         irq = zeus_bit_to_irq(__ffs(pending));
 117                         generic_handle_irq(irq);
 118                 }
 119                 pending = zeus_irq_pending();
 120         } while (pending);
 121 }
 122
 123 static struct irq_chip zeus_irq_chip = {
 124         .name   = "ISA",
 125         .ack    = zeus_ack_irq,
 126         .mask   = zeus_mask_irq,
 127         .unmask = zeus_unmask_irq,
 128 };
 129
 130 static void __init zeus_init_irq(void)
 131 {
 132         int level;
 133         int isa_irq;
 134
 135         pxa27x_init_irq();
 136
 137         /* Peripheral IRQs. It would be nice to move those inside driver
 138            configuration, but it is not supported at the moment. */
 139         set_irq_type(gpio_to_irq(ZEUS_AC97_GPIO),       IRQ_TYPE_EDGE_RISING);
 140         set_irq_type(gpio_to_irq(ZEUS_WAKEUP_GPIO),     IRQ_TYPE_EDGE_RISING);
 141         set_irq_type(gpio_to_irq(ZEUS_PTT_GPIO),        IRQ_TYPE_EDGE_RISING);
 142         set_irq_type(gpio_to_irq(ZEUS_EXTGPIO_GPIO),    IRQ_TYPE_EDGE_FALLING);
 143         set_irq_type(gpio_to_irq(ZEUS_CAN_GPIO),        IRQ_TYPE_EDGE_FALLING);
 144
 145         /* Setup ISA IRQs */
 146         for (level = 0; level < ARRAY_SIZE(zeus_isa_irqs); level++) {
 147                 isa_irq = zeus_bit_to_irq(level);
 148                 set_irq_chip(isa_irq, &zeus_irq_chip);
 149                 set_irq_handler(isa_irq, handle_edge_irq);
 150                 set_irq_flags(isa_irq, IRQF_VALID | IRQF_PROBE);
 151         }
 152
 153         set_irq_type(gpio_to_irq(ZEUS_ISA_GPIO), IRQ_TYPE_EDGE_RISING);
 154         set_irq_chained_handler(gpio_to_irq(ZEUS_ISA_GPIO), zeus_irq_handler);
 155 }
 156
 157
 158 /*
 159  * Platform devices
 160  */
 161
 162 /* Flash */
 163 static struct resource zeus_mtd_resources[] = {
 164         [0] = { /* NOR Flash (up to 64MB) */
 165                 .start  = ZEUS_FLASH_PHYS,
 166                 .end    = ZEUS_FLASH_PHYS + SZ_64M - 1,
 167                 .flags  = IORESOURCE_MEM,
 168         },
 169         [1] = { /* SRAM */
 170                 .start  = ZEUS_SRAM_PHYS,
 171                 .end    = ZEUS_SRAM_PHYS + SZ_512K - 1,
 172                 .flags  = IORESOURCE_MEM,
 173         },
 174 };
 175
 176 static struct physmap_flash_data zeus_flash_data[] = {
 177         [0] = {
 178                 .width          = 2,
 179                 .parts          = NULL,
 180                 .nr_parts       = 0,
 181         },
 182 };
 183
 184 static struct platform_device zeus_mtd_devices[] = {
 185         [0] = {
 186                 .name           = "physmap-flash",
 187                 .id             = 0,
 188                 .dev            = {
 189                         .platform_data = &zeus_flash_data[0],
 190                 },
 191                 .resource       = &zeus_mtd_resources[0],
 192                 .num_resources  = 1,
 193         },
 194 };
 195
 196 /* Serial */
 197 static struct resource zeus_serial_resources[] = {
 198         {
 199                 .start  = 0x10000000,
 200                 .end    = 0x1000000f,
 201                 .flags  = IORESOURCE_MEM,
 202         },
 203         {
 204                 .start  = 0x10800000,
 205                 .end    = 0x1080000f,
 206                 .flags  = IORESOURCE_MEM,
 207         },
 208         {
 209                 .start  = 0x11000000,
 210                 .end    = 0x1100000f,
 211                 .flags  = IORESOURCE_MEM,
 212         },
 213         {
 214                 .start  = 0x40100000,
 215                 .end    = 0x4010001f,
 216                 .flags  = IORESOURCE_MEM,
 217         },
 218         {
 219                 .start  = 0x40200000,
 220                 .end    = 0x4020001f,
 221                 .flags  = IORESOURCE_MEM,
 222         },
 223         {
 224                 .start  = 0x40700000,
 225                 .end    = 0x4070001f,
 226                 .flags  = IORESOURCE_MEM,
 227         },
 228 };
 229
 230 static struct plat_serial8250_port serial_platform_data[] = {
 231         /* External UARTs */
 232         /* FIXME: Shared IRQs on COM1-COM4 will not work properly on v1i1 hardware. */
 233         { /* COM1 */
 234                 .mapbase        = 0x10000000,
 235                 .irq            = gpio_to_irq(ZEUS_UARTA_GPIO),
 236                 .irqflags       = IRQF_TRIGGER_RISING,
 237                 .uartclk        = 14745600,
 238                 .regshift       = 1,
 239                 .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 240                 .iotype         = UPIO_MEM,
 241         },
 242         { /* COM2 */
 243                 .mapbase        = 0x10800000,
 244                 .irq            = gpio_to_irq(ZEUS_UARTB_GPIO),
 245                 .irqflags       = IRQF_TRIGGER_RISING,
 246                 .uartclk        = 14745600,
 247                 .regshift       = 1,
 248                 .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 249                 .iotype         = UPIO_MEM,
 250         },
 251         { /* COM3 */
 252                 .mapbase        = 0x11000000,
 253                 .irq            = gpio_to_irq(ZEUS_UARTC_GPIO),
 254                 .irqflags       = IRQF_TRIGGER_RISING,
 255                 .uartclk        = 14745600,
 256                 .regshift       = 1,
 257                 .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 258                 .iotype         = UPIO_MEM,
 259         },
 260         { /* COM4 */
 261                 .mapbase        = 0x11800000,
 262                 .irq            = gpio_to_irq(ZEUS_UARTD_GPIO),
 263                 .irqflags       = IRQF_TRIGGER_RISING,
 264                 .uartclk        = 14745600,
 265                 .regshift       = 1,
 266                 .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 267                 .iotype         = UPIO_MEM,
 268         },
 269         /* Internal UARTs */
 270         { /* FFUART */
 271                 .membase        = (void *)&FFUART,
 272                 .mapbase        = __PREG(FFUART),
 273                 .irq            = IRQ_FFUART,
 274                 .uartclk        = 921600 * 16,
 275                 .regshift       = 2,
 276                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 277                 .iotype         = UPIO_MEM,
 278         },
 279         { /* BTUART */
 280                 .membase        = (void *)&BTUART,
 281                 .mapbase        = __PREG(BTUART),
 282                 .irq            = IRQ_BTUART,
 283                 .uartclk        = 921600 * 16,
 284                 .regshift       = 2,
 285                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 286                 .iotype         = UPIO_MEM,
 287         },
 288         { /* STUART */
 289                 .membase        = (void *)&STUART,
 290                 .mapbase        = __PREG(STUART),
 291                 .irq            = IRQ_STUART,
 292                 .uartclk        = 921600 * 16,
 293                 .regshift       = 2,
 294                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 295                 .iotype         = UPIO_MEM,
 296         },
 297         { },
 298 };
 299
 300 static struct platform_device zeus_serial_device = {
 301         .name = "serial8250",
 302         .id   = PLAT8250_DEV_PLATFORM,
 303         .dev  = {
 304                 .platform_data = serial_platform_data,
 305         },
 306         .num_resources  = ARRAY_SIZE(zeus_serial_resources),
 307         .resource       = zeus_serial_resources,
 308 };
 309
 310 /* Ethernet */
 311 static struct resource zeus_dm9k0_resource[] = {
 312         [0] = {
 313                 .start = ZEUS_ETH0_PHYS,
 314                 .end   = ZEUS_ETH0_PHYS + 1,
 315                 .flags = IORESOURCE_MEM
 316         },
 317         [1] = {
 318                 .start = ZEUS_ETH0_PHYS + 2,
 319                 .end   = ZEUS_ETH0_PHYS + 3,
 320                 .flags = IORESOURCE_MEM
 321         },
 322         [2] = {
 323                 .start = gpio_to_irq(ZEUS_ETH0_GPIO),
 324                 .end   = gpio_to_irq(ZEUS_ETH0_GPIO),
 325                 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 326         },
 327 };
 328
 329 static struct resource zeus_dm9k1_resource[] = {
 330         [0] = {
 331                 .start = ZEUS_ETH1_PHYS,
 332                 .end   = ZEUS_ETH1_PHYS + 1,
 333                 .flags = IORESOURCE_MEM
 334         },
 335         [1] = {
 336                 .start = ZEUS_ETH1_PHYS + 2,
 337                 .end   = ZEUS_ETH1_PHYS + 3,
 338                 .flags = IORESOURCE_MEM,
 339         },
 340         [2] = {
 341                 .start = gpio_to_irq(ZEUS_ETH1_GPIO),
 342                 .end   = gpio_to_irq(ZEUS_ETH1_GPIO),
 343                 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 344         },
 345 };
 346
 347 static struct dm9000_plat_data zeus_dm9k_platdata = {
 348         .flags          = DM9000_PLATF_16BITONLY,
 349 };
 350
 351 static struct platform_device zeus_dm9k0_device = {
 352         .name           = "dm9000",
 353         .id             = 0,
 354         .num_resources  = ARRAY_SIZE(zeus_dm9k0_resource),
 355         .resource       = zeus_dm9k0_resource,
 356         .dev            = {
 357                 .platform_data = &zeus_dm9k_platdata,
 358         }
 359 };
 360
 361 static struct platform_device zeus_dm9k1_device = {
 362         .name           = "dm9000",
 363         .id             = 1,
 364         .num_resources  = ARRAY_SIZE(zeus_dm9k1_resource),
 365         .resource       = zeus_dm9k1_resource,
 366         .dev            = {
 367                 .platform_data = &zeus_dm9k_platdata,
 368         }
 369 };
 370
 371 /* External SRAM */
 372 static struct resource zeus_sram_resource = {
 373         .start          = ZEUS_SRAM_PHYS,
 374         .end            = ZEUS_SRAM_PHYS + ZEUS_SRAM_SIZE * 2 - 1,
 375         .flags          = IORESOURCE_MEM,
 376 };
 377
 378 static struct platform_device zeus_sram_device = {
 379         .name           = "pxa2xx-8bit-sram",
 380         .id             = 0,
 381         .num_resources  = 1,
 382         .resource       = &zeus_sram_resource,
 383 };
 384
 385 /* SPI interface on SSP3 */
 386 static struct pxa2xx_spi_master pxa2xx_spi_ssp3_master_info = {
 387         .num_chipselect = 1,
 388         .enable_dma     = 1,
 389 };
 390
 391 /* CAN bus on SPI */
 392 static int zeus_mcp2515_setup(struct spi_device *sdev)
 393 {
 394         int err;
 395
 396         err = gpio_request(ZEUS_CAN_SHDN_GPIO, "CAN shutdown");
 397         if (err)
 398                 return err;
 399
 400         err = gpio_direction_output(ZEUS_CAN_SHDN_GPIO, 1);
 401         if (err) {
 402                 gpio_free(ZEUS_CAN_SHDN_GPIO);
 403                 return err;
 404         }
 405
 406         return 0;
 407 }
 408
 409 static int zeus_mcp2515_transceiver_enable(int enable)
 410 {
 411         gpio_set_value(ZEUS_CAN_SHDN_GPIO, !enable);
 412         return 0;
 413 }
 414
 415 static struct mcp251x_platform_data zeus_mcp2515_pdata = {
 416         .oscillator_frequency   = 16*1000*1000,
 417         .model                  = CAN_MCP251X_MCP2515,
 418         .board_specific_setup   = zeus_mcp2515_setup,
 419         .transceiver_enable     = zeus_mcp2515_transceiver_enable,
 420         .power_enable           = zeus_mcp2515_transceiver_enable,
 421 };
 422
 423 static struct spi_board_info zeus_spi_board_info[] = {
 424         [0] = {
 425                 .modalias       = "mcp251x",
 426                 .platform_data  = &zeus_mcp2515_pdata,
 427                 .irq            = gpio_to_irq(ZEUS_CAN_GPIO),
 428                 .max_speed_hz   = 1*1000*1000,
 429                 .bus_num        = 3,
 430                 .mode           = SPI_MODE_0,
 431                 .chip_select    = 0,
 432         },
 433 };
 434
 435 /* Leds */
 436 static struct gpio_led zeus_leds[] = {
 437         [0] = {
 438                 .name            = "zeus:yellow:1",
 439                 .default_trigger = "heartbeat",
 440                 .gpio            = ZEUS_EXT0_GPIO(3),
 441                 .active_low      = 1,
 442         },
 443         [1] = {
 444                 .name            = "zeus:yellow:2",
 445                 .default_trigger = "default-on",
 446                 .gpio            = ZEUS_EXT0_GPIO(4),
 447                 .active_low      = 1,
 448         },
 449         [2] = {
 450                 .name            = "zeus:yellow:3",
 451                 .default_trigger = "default-on",
 452                 .gpio            = ZEUS_EXT0_GPIO(5),
 453                 .active_low      = 1,
 454         },
 455 };
 456
 457 static struct gpio_led_platform_data zeus_leds_info = {
 458         .leds           = zeus_leds,
 459         .num_leds       = ARRAY_SIZE(zeus_leds),
 460 };
 461
 462 static struct platform_device zeus_leds_device = {
 463         .name           = "leds-gpio",
 464         .id             = -1,
 465         .dev            = {
 466                 .platform_data  = &zeus_leds_info,
 467         },
 468 };
 469
 470 static void zeus_cf_reset(int state)
 471 {
 472         u16 cpld_state = __raw_readw(ZEUS_CPLD_CONTROL);
 473
 474         if (state)
 475                 cpld_state |= ZEUS_CPLD_CONTROL_CF_RST;
 476         else
 477                 cpld_state &= ~ZEUS_CPLD_CONTROL_CF_RST;
 478
 479         __raw_writew(cpld_state, ZEUS_CPLD_CONTROL);
 480 }
 481
 482 static struct arcom_pcmcia_pdata zeus_pcmcia_info = {
 483         .cd_gpio        = ZEUS_CF_CD_GPIO,
 484         .rdy_gpio       = ZEUS_CF_RDY_GPIO,
 485         .pwr_gpio       = ZEUS_CF_PWEN_GPIO,
 486         .reset          = zeus_cf_reset,
 487 };
 488
 489 static struct platform_device zeus_pcmcia_device = {
 490         .name           = "zeus-pcmcia",
 491         .id             = -1,
 492         .dev            = {
 493                 .platform_data  = &zeus_pcmcia_info,
 494         },
 495 };
 496
 497 static struct resource zeus_max6369_resource = {
 498         .start          = ZEUS_CPLD_EXTWDOG_PHYS,
 499         .end            = ZEUS_CPLD_EXTWDOG_PHYS,
 500         .flags          = IORESOURCE_MEM,
 501 };
 502
 503 struct platform_device zeus_max6369_device = {
 504         .name           = "max6369_wdt",
 505         .id             = -1,
 506         .resource       = &zeus_max6369_resource,
 507         .num_resources  = 1,
 508 };
 509
 510 static struct platform_device *zeus_devices[] __initdata = {
 511         &zeus_serial_device,
 512         &zeus_mtd_devices[0],
 513         &zeus_dm9k0_device,
 514         &zeus_dm9k1_device,
 515         &zeus_sram_device,
 516         &zeus_leds_device,
 517         &zeus_pcmcia_device,
 518         &zeus_max6369_device,
 519 };
 520
 521 /* AC'97 */
 522 static pxa2xx_audio_ops_t zeus_ac97_info = {
 523         .reset_gpio = 95,
 524 };
 525
 526
 527 /*
 528  * USB host
 529  */
 530
 531 static int zeus_ohci_init(struct device *dev)
 532 {
 533         int err;
 534
 535         /* Switch on port 2. */
 536         if ((err = gpio_request(ZEUS_USB2_PWREN_GPIO, "USB2_PWREN"))) {
 537                 dev_err(dev, "Can't request USB2_PWREN\n");
 538                 return err;
 539         }
 540
 541         if ((err = gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 1))) {
 542                 gpio_free(ZEUS_USB2_PWREN_GPIO);
 543                 dev_err(dev, "Can't enable USB2_PWREN\n");
 544                 return err;
 545         }
 546
 547         /* Port 2 is shared between host and client interface. */
 548         UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
 549
 550         return 0;
 551 }
 552
 553 static void zeus_ohci_exit(struct device *dev)
 554 {
 555         /* Power-off port 2 */
 556         gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 0);
 557         gpio_free(ZEUS_USB2_PWREN_GPIO);
 558 }
 559
 560 static struct pxaohci_platform_data zeus_ohci_platform_data = {
 561         .port_mode      = PMM_NPS_MODE,
 562         /* Clear Power Control Polarity Low and set Power Sense
 563          * Polarity Low. Supply power to USB ports. */
 564         .flags          = ENABLE_PORT_ALL | POWER_SENSE_LOW,
 565         .init           = zeus_ohci_init,
 566         .exit           = zeus_ohci_exit,
 567 };
 568
 569 /*
 570  * Flat Panel
 571  */
 572
 573 static void zeus_lcd_power(int on, struct fb_var_screeninfo *si)
 574 {
 575         gpio_set_value(ZEUS_LCD_EN_GPIO, on);
 576 }
 577
 578 static void zeus_backlight_power(int on)
 579 {
 580         gpio_set_value(ZEUS_BKLEN_GPIO, on);
 581 }
 582
 583 static int zeus_setup_fb_gpios(void)
 584 {
 585         int err;
 586
 587         if ((err = gpio_request(ZEUS_LCD_EN_GPIO, "LCD_EN")))
 588                 goto out_err;
 589
 590         if ((err = gpio_direction_output(ZEUS_LCD_EN_GPIO, 0)))
 591                 goto out_err_lcd;
 592
 593         if ((err = gpio_request(ZEUS_BKLEN_GPIO, "BKLEN")))
 594                 goto out_err_lcd;
 595
 596         if ((err = gpio_direction_output(ZEUS_BKLEN_GPIO, 0)))
 597                 goto out_err_bkl;
 598
 599         return 0;
 600
 601 out_err_bkl:
 602         gpio_free(ZEUS_BKLEN_GPIO);
 603 out_err_lcd:
 604         gpio_free(ZEUS_LCD_EN_GPIO);
 605 out_err:
 606         return err;
 607 }
 608
 609 static struct pxafb_mode_info zeus_fb_mode_info[] = {
 610         {
 611                 .pixclock       = 39722,
 612
 613                 .xres           = 640,
 614                 .yres           = 480,
 615
 616                 .bpp            = 16,
 617
 618                 .hsync_len      = 63,
 619                 .left_margin    = 16,
 620                 .right_margin   = 81,
 621
 622                 .vsync_len      = 2,
 623                 .upper_margin   = 12,
 624                 .lower_margin   = 31,
 625
 626                 .sync           = 0,
 627         },
 628 };
 629
 630 static struct pxafb_mach_info zeus_fb_info = {
 631         .modes                  = zeus_fb_mode_info,
 632         .num_modes              = 1,
 633         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 634         .pxafb_lcd_power        = zeus_lcd_power,
 635         .pxafb_backlight_power  = zeus_backlight_power,
 636 };
 637
 638 /*
 639  * MMC/SD Device
 640  *
 641  * The card detect interrupt isn't debounced so we delay it by 250ms
 642  * to give the card a chance to fully insert/eject.
 643  */
 644
 645 static struct pxamci_platform_data zeus_mci_platform_data = {
 646         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 647         .detect_delay           = HZ/4,
 648         .gpio_card_detect       = ZEUS_MMC_CD_GPIO,
 649         .gpio_card_ro           = ZEUS_MMC_WP_GPIO,
 650         .gpio_card_ro_invert    = 1,
 651         .gpio_power             = -1
 652 };
 653
 654 /*
 655  * USB Device Controller
 656  */
 657 static void zeus_udc_command(int cmd)
 658 {
 659         switch (cmd) {
 660         case PXA2XX_UDC_CMD_DISCONNECT:
 661                 pr_info("zeus: disconnecting USB client\n");
 662                 UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
 663                 break;
 664
 665         case PXA2XX_UDC_CMD_CONNECT:
 666                 pr_info("zeus: connecting USB client\n");
 667                 UP2OCR = UP2OCR_HXOE | UP2OCR_DPPUE;
 668                 break;
 669         }
 670 }
 671
 672 static struct pxa2xx_udc_mach_info zeus_udc_info = {
 673         .udc_command = zeus_udc_command,
 674 };
 675
 676 #ifdef CONFIG_PM
 677 static void zeus_power_off(void)
 678 {
 679         local_irq_disable();
 680         pxa27x_cpu_suspend(PWRMODE_DEEPSLEEP);
 681 }
 682 #else
 683 #define zeus_power_off   NULL
 684 #endif
 685
 686 #ifdef CONFIG_APM_EMULATION
 687 static void zeus_get_power_status(struct apm_power_info *info)
 688 {
 689         /* Power supply is always present */
 690         info->ac_line_status    = APM_AC_ONLINE;
 691         info->battery_status    = APM_BATTERY_STATUS_NOT_PRESENT;
 692         info->battery_flag      = APM_BATTERY_FLAG_NOT_PRESENT;
 693 }
 694
 695 static inline void zeus_setup_apm(void)
 696 {
 697         apm_get_power_status = zeus_get_power_status;
 698 }
 699 #else
 700 static inline void zeus_setup_apm(void)
 701 {
 702 }
 703 #endif
 704
 705 static int zeus_get_pcb_info(struct i2c_client *client, unsigned gpio,
 706                              unsigned ngpio, void *context)
 707 {
 708         int i;
 709         u8 pcb_info = 0;
 710
 711         for (i = 0; i < 8; i++) {
 712                 int pcb_bit = gpio + i + 8;
 713
 714                 if (gpio_request(pcb_bit, "pcb info")) {
 715                         dev_err(&client->dev, "Can't request pcb info %d\n", i);
 716                         continue;
 717                 }
 718
 719                 if (gpio_direction_input(pcb_bit)) {
 720                         dev_err(&client->dev, "Can't read pcb info %d\n", i);
 721                         gpio_free(pcb_bit);
 722                         continue;
 723                 }
 724
 725                 pcb_info |= !!gpio_get_value(pcb_bit) << i;
 726
 727                 gpio_free(pcb_bit);
 728         }
 729
 730         dev_info(&client->dev, "Zeus PCB version %d issue %d\n",
 731                  pcb_info >> 4, pcb_info & 0xf);
 732
 733         return 0;
 734 }
 735
 736 static struct pca953x_platform_data zeus_pca953x_pdata[] = {
 737         [0] = { .gpio_base      = ZEUS_EXT0_GPIO_BASE, },
 738         [1] = {
 739                 .gpio_base      = ZEUS_EXT1_GPIO_BASE,
 740                 .setup          = zeus_get_pcb_info,
 741         },
 742         [2] = { .gpio_base = ZEUS_USER_GPIO_BASE, },
 743 };
 744
 745 static struct i2c_board_info __initdata zeus_i2c_devices[] = {
 746         {
 747                 I2C_BOARD_INFO("pca9535",       0x21),
 748                 .platform_data  = &zeus_pca953x_pdata[0],
 749         },
 750         {
 751                 I2C_BOARD_INFO("pca9535",       0x22),
 752                 .platform_data  = &zeus_pca953x_pdata[1],
 753         },
 754         {
 755                 I2C_BOARD_INFO("pca9535",       0x20),
 756                 .platform_data  = &zeus_pca953x_pdata[2],
 757                 .irq            = gpio_to_irq(ZEUS_EXTGPIO_GPIO),
 758         },
 759         { I2C_BOARD_INFO("lm75a",       0x48) },
 760         { I2C_BOARD_INFO("24c01",       0x50) },
 761         { I2C_BOARD_INFO("isl1208",     0x6f) },
 762 };
 763
 764 static mfp_cfg_t zeus_pin_config[] __initdata = {
 765         /* AC97 */
 766         GPIO28_AC97_BITCLK,
 767         GPIO29_AC97_SDATA_IN_0,
 768         GPIO30_AC97_SDATA_OUT,
 769         GPIO31_AC97_SYNC,
 770
 771         GPIO15_nCS_1,
 772         GPIO78_nCS_2,
 773         GPIO80_nCS_4,
 774         GPIO33_nCS_5,
 775
 776         GPIO22_GPIO,
 777         GPIO32_MMC_CLK,
 778         GPIO92_MMC_DAT_0,
 779         GPIO109_MMC_DAT_1,
 780         GPIO110_MMC_DAT_2,
 781         GPIO111_MMC_DAT_3,
 782         GPIO112_MMC_CMD,
 783
 784         GPIO88_USBH1_PWR,
 785         GPIO89_USBH1_PEN,
 786         GPIO119_USBH2_PWR,
 787         GPIO120_USBH2_PEN,
 788
 789         GPIO86_LCD_LDD_16,
 790         GPIO87_LCD_LDD_17,
 791
 792         GPIO102_GPIO,
 793         GPIO104_CIF_DD_2,
 794         GPIO105_CIF_DD_1,
 795
 796         GPIO81_SSP3_TXD,
 797         GPIO82_SSP3_RXD,
 798         GPIO83_SSP3_SFRM,
 799         GPIO84_SSP3_SCLK,
 800
 801         GPIO48_nPOE,
 802         GPIO49_nPWE,
 803         GPIO50_nPIOR,
 804         GPIO51_nPIOW,
 805         GPIO85_nPCE_1,
 806         GPIO54_nPCE_2,
 807         GPIO79_PSKTSEL,
 808         GPIO55_nPREG,
 809         GPIO56_nPWAIT,
 810         GPIO57_nIOIS16,
 811         GPIO36_GPIO,            /* CF CD */
 812         GPIO97_GPIO,            /* CF PWREN */
 813         GPIO99_GPIO,            /* CF RDY */
 814 };
 815
 816 /*
 817  * DM9k MSCx settings:  SRAM, 16 bits
 818  *                      17 cycles delay first access
 819  *                       5 cycles delay next access
 820  *                      13 cycles recovery time
 821  *                      faster device
 822  */
 823 #define DM9K_MSC_VALUE          0xe4c9
 824
 825 static void __init zeus_init(void)
 826 {
 827         u16 dm9000_msc = DM9K_MSC_VALUE;
 828
 829         system_rev = __raw_readw(ZEUS_CPLD_VERSION);
 830         pr_info("Zeus CPLD V%dI%d\n", (system_rev & 0xf0) >> 4, (system_rev & 0x0f));
 831
 832         /* Fix timings for dm9000s (CS1/CS2)*/
 833         MSC0 = (MSC0 & 0xffff) | (dm9000_msc << 16);
 834         MSC1 = (MSC1 & 0xffff0000) | dm9000_msc;
 835
 836         pm_power_off = zeus_power_off;
 837         zeus_setup_apm();
 838
 839         pxa2xx_mfp_config(ARRAY_AND_SIZE(zeus_pin_config));
 840
 841         platform_add_devices(zeus_devices, ARRAY_SIZE(zeus_devices));
 842
 843         pxa_set_ohci_info(&zeus_ohci_platform_data);
 844
 845         if (zeus_setup_fb_gpios())
 846                 pr_err("Failed to setup fb gpios\n");
 847         else
 848                 set_pxa_fb_info(&zeus_fb_info);
 849
 850         pxa_set_mci_info(&zeus_mci_platform_data);
 851         pxa_set_udc_info(&zeus_udc_info);
 852         pxa_set_ac97_info(&zeus_ac97_info);
 853         pxa_set_i2c_info(NULL);
 854         i2c_register_board_info(0, ARRAY_AND_SIZE(zeus_i2c_devices));
 855         pxa2xx_set_spi_info(3, &pxa2xx_spi_ssp3_master_info);
 856         spi_register_board_info(zeus_spi_board_info, ARRAY_SIZE(zeus_spi_board_info));
 857 }
 858
 859 static struct map_desc zeus_io_desc[] __initdata = {
 860         {
 861                 .virtual = ZEUS_CPLD_VERSION,
 862                 .pfn     = __phys_to_pfn(ZEUS_CPLD_VERSION_PHYS),
 863                 .length  = 0x1000,
 864                 .type    = MT_DEVICE,
 865         },
 866         {
 867                 .virtual = ZEUS_CPLD_ISA_IRQ,
 868                 .pfn     = __phys_to_pfn(ZEUS_CPLD_ISA_IRQ_PHYS),
 869                 .length  = 0x1000,
 870                 .type    = MT_DEVICE,
 871         },
 872         {
 873                 .virtual = ZEUS_CPLD_CONTROL,
 874                 .pfn     = __phys_to_pfn(ZEUS_CPLD_CONTROL_PHYS),
 875                 .length  = 0x1000,
 876                 .type    = MT_DEVICE,
 877         },
 878         {
 879                 .virtual = ZEUS_PC104IO,
 880                 .pfn     = __phys_to_pfn(ZEUS_PC104IO_PHYS),
 881                 .length  = 0x00800000,
 882                 .type    = MT_DEVICE,
 883         },
 884 };
 885
 886 static void __init zeus_map_io(void)
 887 {
 888         pxa_map_io();
 889
 890         iotable_init(zeus_io_desc, ARRAY_SIZE(zeus_io_desc));
 891
 892         /* Clear PSPR to ensure a full restart on wake-up. */
 893         PMCR = PSPR = 0;
 894
 895         /* enable internal 32.768Khz oscillator (ignore OSCC_OOK) */
 896         OSCC |= OSCC_OON;
 897
 898         /* Some clock cycles later (from OSCC_ON), programme PCFR (OPDE...).
 899          * float chip selects and PCMCIA */
 900         PCFR = PCFR_OPDE | PCFR_DC_EN | PCFR_FS | PCFR_FP;
 901 }
 902
 903 MACHINE_START(ARCOM_ZEUS, "Arcom/Eurotech ZEUS")
 904         /* Maintainer: Marc Zyngier <maz@misterjones.org> */
 905         .phys_io        = 0x40000000,
 906         .io_pg_offst    = ((io_p2v(0x40000000) >> 18) & 0xfffc),
 907         .boot_params    = 0xa0000100,
 908         .map_io         = zeus_map_io,
 909         .init_irq       = zeus_init_irq,
 910         .timer          = &pxa_timer,
 911         .init_machine   = zeus_init,
 912 MACHINE_END
 913