linux/arch/arm/mach-pxa/zeus.c
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   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/spi/pxa2xx_spi.h>
  24#include <linux/mtd/mtd.h>
  25#include <linux/mtd/partitions.h>
  26#include <linux/mtd/physmap.h>
  27#include <linux/i2c.h>
  28#include <linux/i2c/pxa-i2c.h>
  29#include <linux/platform_data/pca953x.h>
  30#include <linux/apm-emulation.h>
  31#include <linux/can/platform/mcp251x.h>
  32#include <linux/regulator/fixed.h>
  33#include <linux/regulator/machine.h>
  34
  35#include <asm/mach-types.h>
  36#include <asm/suspend.h>
  37#include <asm/system_info.h>
  38#include <asm/mach/arch.h>
  39#include <asm/mach/map.h>
  40
  41#include "pxa27x.h"
  42#include <mach/regs-uart.h>
  43#include <linux/platform_data/usb-ohci-pxa27x.h>
  44#include <linux/platform_data/mmc-pxamci.h>
  45#include "pxa27x-udc.h"
  46#include "udc.h"
  47#include <linux/platform_data/video-pxafb.h>
  48#include "pm.h"
  49#include <mach/audio.h>
  50#include <linux/platform_data/pcmcia-pxa2xx_viper.h>
  51#include "zeus.h"
  52#include <mach/smemc.h>
  53
  54#include "generic.h"
  55
  56/*
  57 * Interrupt handling
  58 */
  59
  60static unsigned long zeus_irq_enabled_mask;
  61static const int zeus_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, };
  62static const int zeus_isa_irq_map[] = {
  63        0,              /* ISA irq #0, invalid */
  64        0,              /* ISA irq #1, invalid */
  65        0,              /* ISA irq #2, invalid */
  66        1 << 0,         /* ISA irq #3 */
  67        1 << 1,         /* ISA irq #4 */
  68        1 << 2,         /* ISA irq #5 */
  69        1 << 3,         /* ISA irq #6 */
  70        1 << 4,         /* ISA irq #7 */
  71        0,              /* ISA irq #8, invalid */
  72        0,              /* ISA irq #9, invalid */
  73        1 << 5,         /* ISA irq #10 */
  74        1 << 6,         /* ISA irq #11 */
  75        1 << 7,         /* ISA irq #12 */
  76};
  77
  78static inline int zeus_irq_to_bitmask(unsigned int irq)
  79{
  80        return zeus_isa_irq_map[irq - PXA_ISA_IRQ(0)];
  81}
  82
  83static inline int zeus_bit_to_irq(int bit)
  84{
  85        return zeus_isa_irqs[bit] + PXA_ISA_IRQ(0);
  86}
  87
  88static void zeus_ack_irq(struct irq_data *d)
  89{
  90        __raw_writew(zeus_irq_to_bitmask(d->irq), ZEUS_CPLD_ISA_IRQ);
  91}
  92
  93static void zeus_mask_irq(struct irq_data *d)
  94{
  95        zeus_irq_enabled_mask &= ~(zeus_irq_to_bitmask(d->irq));
  96}
  97
  98static void zeus_unmask_irq(struct irq_data *d)
  99{
 100        zeus_irq_enabled_mask |= zeus_irq_to_bitmask(d->irq);
 101}
 102
 103static inline unsigned long zeus_irq_pending(void)
 104{
 105        return __raw_readw(ZEUS_CPLD_ISA_IRQ) & zeus_irq_enabled_mask;
 106}
 107
 108static void zeus_irq_handler(struct irq_desc *desc)
 109{
 110        unsigned int irq;
 111        unsigned long pending;
 112
 113        pending = zeus_irq_pending();
 114        do {
 115                /* we're in a chained irq handler,
 116                 * so ack the interrupt by hand */
 117                desc->irq_data.chip->irq_ack(&desc->irq_data);
 118
 119                if (likely(pending)) {
 120                        irq = zeus_bit_to_irq(__ffs(pending));
 121                        generic_handle_irq(irq);
 122                }
 123                pending = zeus_irq_pending();
 124        } while (pending);
 125}
 126
 127static struct irq_chip zeus_irq_chip = {
 128        .name           = "ISA",
 129        .irq_ack        = zeus_ack_irq,
 130        .irq_mask       = zeus_mask_irq,
 131        .irq_unmask     = zeus_unmask_irq,
 132};
 133
 134static void __init zeus_init_irq(void)
 135{
 136        int level;
 137        int isa_irq;
 138
 139        pxa27x_init_irq();
 140
 141        /* Peripheral IRQs. It would be nice to move those inside driver
 142           configuration, but it is not supported at the moment. */
 143        irq_set_irq_type(gpio_to_irq(ZEUS_AC97_GPIO), IRQ_TYPE_EDGE_RISING);
 144        irq_set_irq_type(gpio_to_irq(ZEUS_WAKEUP_GPIO), IRQ_TYPE_EDGE_RISING);
 145        irq_set_irq_type(gpio_to_irq(ZEUS_PTT_GPIO), IRQ_TYPE_EDGE_RISING);
 146        irq_set_irq_type(gpio_to_irq(ZEUS_EXTGPIO_GPIO),
 147                         IRQ_TYPE_EDGE_FALLING);
 148        irq_set_irq_type(gpio_to_irq(ZEUS_CAN_GPIO), IRQ_TYPE_EDGE_FALLING);
 149
 150        /* Setup ISA IRQs */
 151        for (level = 0; level < ARRAY_SIZE(zeus_isa_irqs); level++) {
 152                isa_irq = zeus_bit_to_irq(level);
 153                irq_set_chip_and_handler(isa_irq, &zeus_irq_chip,
 154                                         handle_edge_irq);
 155                irq_clear_status_flags(isa_irq, IRQ_NOREQUEST | IRQ_NOPROBE);
 156        }
 157
 158        irq_set_irq_type(gpio_to_irq(ZEUS_ISA_GPIO), IRQ_TYPE_EDGE_RISING);
 159        irq_set_chained_handler(gpio_to_irq(ZEUS_ISA_GPIO), zeus_irq_handler);
 160}
 161
 162
 163/*
 164 * Platform devices
 165 */
 166
 167/* Flash */
 168static struct resource zeus_mtd_resources[] = {
 169        [0] = { /* NOR Flash (up to 64MB) */
 170                .start  = ZEUS_FLASH_PHYS,
 171                .end    = ZEUS_FLASH_PHYS + SZ_64M - 1,
 172                .flags  = IORESOURCE_MEM,
 173        },
 174        [1] = { /* SRAM */
 175                .start  = ZEUS_SRAM_PHYS,
 176                .end    = ZEUS_SRAM_PHYS + SZ_512K - 1,
 177                .flags  = IORESOURCE_MEM,
 178        },
 179};
 180
 181static struct physmap_flash_data zeus_flash_data[] = {
 182        [0] = {
 183                .width          = 2,
 184                .parts          = NULL,
 185                .nr_parts       = 0,
 186        },
 187};
 188
 189static struct platform_device zeus_mtd_devices[] = {
 190        [0] = {
 191                .name           = "physmap-flash",
 192                .id             = 0,
 193                .dev            = {
 194                        .platform_data = &zeus_flash_data[0],
 195                },
 196                .resource       = &zeus_mtd_resources[0],
 197                .num_resources  = 1,
 198        },
 199};
 200
 201/* Serial */
 202static struct resource zeus_serial_resources[] = {
 203        {
 204                .start  = 0x10000000,
 205                .end    = 0x1000000f,
 206                .flags  = IORESOURCE_MEM,
 207        },
 208        {
 209                .start  = 0x10800000,
 210                .end    = 0x1080000f,
 211                .flags  = IORESOURCE_MEM,
 212        },
 213        {
 214                .start  = 0x11000000,
 215                .end    = 0x1100000f,
 216                .flags  = IORESOURCE_MEM,
 217        },
 218        {
 219                .start  = 0x40100000,
 220                .end    = 0x4010001f,
 221                .flags  = IORESOURCE_MEM,
 222        },
 223        {
 224                .start  = 0x40200000,
 225                .end    = 0x4020001f,
 226                .flags  = IORESOURCE_MEM,
 227        },
 228        {
 229                .start  = 0x40700000,
 230                .end    = 0x4070001f,
 231                .flags  = IORESOURCE_MEM,
 232        },
 233};
 234
 235static struct plat_serial8250_port serial_platform_data[] = {
 236        /* External UARTs */
 237        /* FIXME: Shared IRQs on COM1-COM4 will not work properly on v1i1 hardware. */
 238        { /* COM1 */
 239                .mapbase        = 0x10000000,
 240                .irq            = PXA_GPIO_TO_IRQ(ZEUS_UARTA_GPIO),
 241                .irqflags       = IRQF_TRIGGER_RISING,
 242                .uartclk        = 14745600,
 243                .regshift       = 1,
 244                .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 245                .iotype         = UPIO_MEM,
 246        },
 247        { /* COM2 */
 248                .mapbase        = 0x10800000,
 249                .irq            = PXA_GPIO_TO_IRQ(ZEUS_UARTB_GPIO),
 250                .irqflags       = IRQF_TRIGGER_RISING,
 251                .uartclk        = 14745600,
 252                .regshift       = 1,
 253                .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 254                .iotype         = UPIO_MEM,
 255        },
 256        { /* COM3 */
 257                .mapbase        = 0x11000000,
 258                .irq            = PXA_GPIO_TO_IRQ(ZEUS_UARTC_GPIO),
 259                .irqflags       = IRQF_TRIGGER_RISING,
 260                .uartclk        = 14745600,
 261                .regshift       = 1,
 262                .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 263                .iotype         = UPIO_MEM,
 264        },
 265        { /* COM4 */
 266                .mapbase        = 0x11800000,
 267                .irq            = PXA_GPIO_TO_IRQ(ZEUS_UARTD_GPIO),
 268                .irqflags       = IRQF_TRIGGER_RISING,
 269                .uartclk        = 14745600,
 270                .regshift       = 1,
 271                .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 272                .iotype         = UPIO_MEM,
 273        },
 274        /* Internal UARTs */
 275        { /* FFUART */
 276                .membase        = (void *)&FFUART,
 277                .mapbase        = __PREG(FFUART),
 278                .irq            = IRQ_FFUART,
 279                .uartclk        = 921600 * 16,
 280                .regshift       = 2,
 281                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 282                .iotype         = UPIO_MEM,
 283        },
 284        { /* BTUART */
 285                .membase        = (void *)&BTUART,
 286                .mapbase        = __PREG(BTUART),
 287                .irq            = IRQ_BTUART,
 288                .uartclk        = 921600 * 16,
 289                .regshift       = 2,
 290                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 291                .iotype         = UPIO_MEM,
 292        },
 293        { /* STUART */
 294                .membase        = (void *)&STUART,
 295                .mapbase        = __PREG(STUART),
 296                .irq            = IRQ_STUART,
 297                .uartclk        = 921600 * 16,
 298                .regshift       = 2,
 299                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 300                .iotype         = UPIO_MEM,
 301        },
 302        { },
 303};
 304
 305static struct platform_device zeus_serial_device = {
 306        .name = "serial8250",
 307        .id   = PLAT8250_DEV_PLATFORM,
 308        .dev  = {
 309                .platform_data = serial_platform_data,
 310        },
 311        .num_resources  = ARRAY_SIZE(zeus_serial_resources),
 312        .resource       = zeus_serial_resources,
 313};
 314
 315/* Ethernet */
 316static struct resource zeus_dm9k0_resource[] = {
 317        [0] = {
 318                .start = ZEUS_ETH0_PHYS,
 319                .end   = ZEUS_ETH0_PHYS + 1,
 320                .flags = IORESOURCE_MEM
 321        },
 322        [1] = {
 323                .start = ZEUS_ETH0_PHYS + 2,
 324                .end   = ZEUS_ETH0_PHYS + 3,
 325                .flags = IORESOURCE_MEM
 326        },
 327        [2] = {
 328                .start = PXA_GPIO_TO_IRQ(ZEUS_ETH0_GPIO),
 329                .end   = PXA_GPIO_TO_IRQ(ZEUS_ETH0_GPIO),
 330                .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 331        },
 332};
 333
 334static struct resource zeus_dm9k1_resource[] = {
 335        [0] = {
 336                .start = ZEUS_ETH1_PHYS,
 337                .end   = ZEUS_ETH1_PHYS + 1,
 338                .flags = IORESOURCE_MEM
 339        },
 340        [1] = {
 341                .start = ZEUS_ETH1_PHYS + 2,
 342                .end   = ZEUS_ETH1_PHYS + 3,
 343                .flags = IORESOURCE_MEM,
 344        },
 345        [2] = {
 346                .start = PXA_GPIO_TO_IRQ(ZEUS_ETH1_GPIO),
 347                .end   = PXA_GPIO_TO_IRQ(ZEUS_ETH1_GPIO),
 348                .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 349        },
 350};
 351
 352static struct dm9000_plat_data zeus_dm9k_platdata = {
 353        .flags          = DM9000_PLATF_16BITONLY,
 354};
 355
 356static struct platform_device zeus_dm9k0_device = {
 357        .name           = "dm9000",
 358        .id             = 0,
 359        .num_resources  = ARRAY_SIZE(zeus_dm9k0_resource),
 360        .resource       = zeus_dm9k0_resource,
 361        .dev            = {
 362                .platform_data = &zeus_dm9k_platdata,
 363        }
 364};
 365
 366static struct platform_device zeus_dm9k1_device = {
 367        .name           = "dm9000",
 368        .id             = 1,
 369        .num_resources  = ARRAY_SIZE(zeus_dm9k1_resource),
 370        .resource       = zeus_dm9k1_resource,
 371        .dev            = {
 372                .platform_data = &zeus_dm9k_platdata,
 373        }
 374};
 375
 376/* External SRAM */
 377static struct resource zeus_sram_resource = {
 378        .start          = ZEUS_SRAM_PHYS,
 379        .end            = ZEUS_SRAM_PHYS + ZEUS_SRAM_SIZE * 2 - 1,
 380        .flags          = IORESOURCE_MEM,
 381};
 382
 383static struct platform_device zeus_sram_device = {
 384        .name           = "pxa2xx-8bit-sram",
 385        .id             = 0,
 386        .num_resources  = 1,
 387        .resource       = &zeus_sram_resource,
 388};
 389
 390/* SPI interface on SSP3 */
 391static struct pxa2xx_spi_master pxa2xx_spi_ssp3_master_info = {
 392        .num_chipselect = 1,
 393        .enable_dma     = 1,
 394};
 395
 396/* CAN bus on SPI */
 397static struct regulator_consumer_supply can_regulator_consumer =
 398        REGULATOR_SUPPLY("vdd", "spi3.0");
 399
 400static struct regulator_init_data can_regulator_init_data = {
 401        .constraints    = {
 402                .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 403        },
 404        .consumer_supplies      = &can_regulator_consumer,
 405        .num_consumer_supplies  = 1,
 406};
 407
 408static struct fixed_voltage_config can_regulator_pdata = {
 409        .supply_name    = "CAN_SHDN",
 410        .microvolts     = 3300000,
 411        .gpio           = ZEUS_CAN_SHDN_GPIO,
 412        .init_data      = &can_regulator_init_data,
 413};
 414
 415static struct platform_device can_regulator_device = {
 416        .name   = "reg-fixed-voltage",
 417        .id     = 0,
 418        .dev    = {
 419                .platform_data  = &can_regulator_pdata,
 420        },
 421};
 422
 423static struct mcp251x_platform_data zeus_mcp2515_pdata = {
 424        .oscillator_frequency   = 16*1000*1000,
 425};
 426
 427static struct spi_board_info zeus_spi_board_info[] = {
 428        [0] = {
 429                .modalias       = "mcp2515",
 430                .platform_data  = &zeus_mcp2515_pdata,
 431                .irq            = PXA_GPIO_TO_IRQ(ZEUS_CAN_GPIO),
 432                .max_speed_hz   = 1*1000*1000,
 433                .bus_num        = 3,
 434                .mode           = SPI_MODE_0,
 435                .chip_select    = 0,
 436        },
 437};
 438
 439/* Leds */
 440static struct gpio_led zeus_leds[] = {
 441        [0] = {
 442                .name            = "zeus:yellow:1",
 443                .default_trigger = "heartbeat",
 444                .gpio            = ZEUS_EXT0_GPIO(3),
 445                .active_low      = 1,
 446        },
 447        [1] = {
 448                .name            = "zeus:yellow:2",
 449                .default_trigger = "default-on",
 450                .gpio            = ZEUS_EXT0_GPIO(4),
 451                .active_low      = 1,
 452        },
 453        [2] = {
 454                .name            = "zeus:yellow:3",
 455                .default_trigger = "default-on",
 456                .gpio            = ZEUS_EXT0_GPIO(5),
 457                .active_low      = 1,
 458        },
 459};
 460
 461static struct gpio_led_platform_data zeus_leds_info = {
 462        .leds           = zeus_leds,
 463        .num_leds       = ARRAY_SIZE(zeus_leds),
 464};
 465
 466static struct platform_device zeus_leds_device = {
 467        .name           = "leds-gpio",
 468        .id             = -1,
 469        .dev            = {
 470                .platform_data  = &zeus_leds_info,
 471        },
 472};
 473
 474static void zeus_cf_reset(int state)
 475{
 476        u16 cpld_state = __raw_readw(ZEUS_CPLD_CONTROL);
 477
 478        if (state)
 479                cpld_state |= ZEUS_CPLD_CONTROL_CF_RST;
 480        else
 481                cpld_state &= ~ZEUS_CPLD_CONTROL_CF_RST;
 482
 483        __raw_writew(cpld_state, ZEUS_CPLD_CONTROL);
 484}
 485
 486static struct arcom_pcmcia_pdata zeus_pcmcia_info = {
 487        .cd_gpio        = ZEUS_CF_CD_GPIO,
 488        .rdy_gpio       = ZEUS_CF_RDY_GPIO,
 489        .pwr_gpio       = ZEUS_CF_PWEN_GPIO,
 490        .reset          = zeus_cf_reset,
 491};
 492
 493static struct platform_device zeus_pcmcia_device = {
 494        .name           = "zeus-pcmcia",
 495        .id             = -1,
 496        .dev            = {
 497                .platform_data  = &zeus_pcmcia_info,
 498        },
 499};
 500
 501static struct resource zeus_max6369_resource = {
 502        .start          = ZEUS_CPLD_EXTWDOG_PHYS,
 503        .end            = ZEUS_CPLD_EXTWDOG_PHYS,
 504        .flags          = IORESOURCE_MEM,
 505};
 506
 507struct platform_device zeus_max6369_device = {
 508        .name           = "max6369_wdt",
 509        .id             = -1,
 510        .resource       = &zeus_max6369_resource,
 511        .num_resources  = 1,
 512};
 513
 514/* AC'97 */
 515static pxa2xx_audio_ops_t zeus_ac97_info = {
 516        .reset_gpio = 95,
 517};
 518
 519
 520/*
 521 * USB host
 522 */
 523
 524static struct regulator_consumer_supply zeus_ohci_regulator_supplies[] = {
 525        REGULATOR_SUPPLY("vbus2", "pxa27x-ohci"),
 526};
 527
 528static struct regulator_init_data zeus_ohci_regulator_data = {
 529        .constraints = {
 530                .valid_ops_mask         = REGULATOR_CHANGE_STATUS,
 531        },
 532        .num_consumer_supplies  = ARRAY_SIZE(zeus_ohci_regulator_supplies),
 533        .consumer_supplies      = zeus_ohci_regulator_supplies,
 534};
 535
 536static struct fixed_voltage_config zeus_ohci_regulator_config = {
 537        .supply_name            = "vbus2",
 538        .microvolts             = 5000000, /* 5.0V */
 539        .gpio                   = ZEUS_USB2_PWREN_GPIO,
 540        .enable_high            = 1,
 541        .startup_delay          = 0,
 542        .init_data              = &zeus_ohci_regulator_data,
 543};
 544
 545static struct platform_device zeus_ohci_regulator_device = {
 546        .name           = "reg-fixed-voltage",
 547        .id             = 1,
 548        .dev = {
 549                .platform_data = &zeus_ohci_regulator_config,
 550        },
 551};
 552
 553static struct pxaohci_platform_data zeus_ohci_platform_data = {
 554        .port_mode      = PMM_NPS_MODE,
 555        /* Clear Power Control Polarity Low and set Power Sense
 556         * Polarity Low. Supply power to USB ports. */
 557        .flags          = ENABLE_PORT_ALL | POWER_SENSE_LOW,
 558};
 559
 560static void zeus_register_ohci(void)
 561{
 562        /* Port 2 is shared between host and client interface. */
 563        UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
 564
 565        pxa_set_ohci_info(&zeus_ohci_platform_data);
 566}
 567
 568/*
 569 * Flat Panel
 570 */
 571
 572static void zeus_lcd_power(int on, struct fb_var_screeninfo *si)
 573{
 574        gpio_set_value(ZEUS_LCD_EN_GPIO, on);
 575}
 576
 577static void zeus_backlight_power(int on)
 578{
 579        gpio_set_value(ZEUS_BKLEN_GPIO, on);
 580}
 581
 582static int zeus_setup_fb_gpios(void)
 583{
 584        int err;
 585
 586        if ((err = gpio_request(ZEUS_LCD_EN_GPIO, "LCD_EN")))
 587                goto out_err;
 588
 589        if ((err = gpio_direction_output(ZEUS_LCD_EN_GPIO, 0)))
 590                goto out_err_lcd;
 591
 592        if ((err = gpio_request(ZEUS_BKLEN_GPIO, "BKLEN")))
 593                goto out_err_lcd;
 594
 595        if ((err = gpio_direction_output(ZEUS_BKLEN_GPIO, 0)))
 596                goto out_err_bkl;
 597
 598        return 0;
 599
 600out_err_bkl:
 601        gpio_free(ZEUS_BKLEN_GPIO);
 602out_err_lcd:
 603        gpio_free(ZEUS_LCD_EN_GPIO);
 604out_err:
 605        return err;
 606}
 607
 608static struct pxafb_mode_info zeus_fb_mode_info[] = {
 609        {
 610                .pixclock       = 39722,
 611
 612                .xres           = 640,
 613                .yres           = 480,
 614
 615                .bpp            = 16,
 616
 617                .hsync_len      = 63,
 618                .left_margin    = 16,
 619                .right_margin   = 81,
 620
 621                .vsync_len      = 2,
 622                .upper_margin   = 12,
 623                .lower_margin   = 31,
 624
 625                .sync           = 0,
 626        },
 627};
 628
 629static struct pxafb_mach_info zeus_fb_info = {
 630        .modes                  = zeus_fb_mode_info,
 631        .num_modes              = 1,
 632        .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 633        .pxafb_lcd_power        = zeus_lcd_power,
 634        .pxafb_backlight_power  = zeus_backlight_power,
 635};
 636
 637/*
 638 * MMC/SD Device
 639 *
 640 * The card detect interrupt isn't debounced so we delay it by 250ms
 641 * to give the card a chance to fully insert/eject.
 642 */
 643
 644static struct pxamci_platform_data zeus_mci_platform_data = {
 645        .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 646        .detect_delay_ms        = 250,
 647        .gpio_card_detect       = ZEUS_MMC_CD_GPIO,
 648        .gpio_card_ro           = ZEUS_MMC_WP_GPIO,
 649        .gpio_card_ro_invert    = 1,
 650        .gpio_power             = -1
 651};
 652
 653/*
 654 * USB Device Controller
 655 */
 656static void zeus_udc_command(int cmd)
 657{
 658        switch (cmd) {
 659        case PXA2XX_UDC_CMD_DISCONNECT:
 660                pr_info("zeus: disconnecting USB client\n");
 661                UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
 662                break;
 663
 664        case PXA2XX_UDC_CMD_CONNECT:
 665                pr_info("zeus: connecting USB client\n");
 666                UP2OCR = UP2OCR_HXOE | UP2OCR_DPPUE;
 667                break;
 668        }
 669}
 670
 671static struct pxa2xx_udc_mach_info zeus_udc_info = {
 672        .udc_command = zeus_udc_command,
 673};
 674
 675static struct platform_device *zeus_devices[] __initdata = {
 676        &zeus_serial_device,
 677        &zeus_mtd_devices[0],
 678        &zeus_dm9k0_device,
 679        &zeus_dm9k1_device,
 680        &zeus_sram_device,
 681        &zeus_leds_device,
 682        &zeus_pcmcia_device,
 683        &zeus_max6369_device,
 684        &can_regulator_device,
 685        &zeus_ohci_regulator_device,
 686};
 687
 688#ifdef CONFIG_PM
 689static void zeus_power_off(void)
 690{
 691        local_irq_disable();
 692        cpu_suspend(PWRMODE_DEEPSLEEP, pxa27x_finish_suspend);
 693}
 694#else
 695#define zeus_power_off   NULL
 696#endif
 697
 698#ifdef CONFIG_APM_EMULATION
 699static void zeus_get_power_status(struct apm_power_info *info)
 700{
 701        /* Power supply is always present */
 702        info->ac_line_status    = APM_AC_ONLINE;
 703        info->battery_status    = APM_BATTERY_STATUS_NOT_PRESENT;
 704        info->battery_flag      = APM_BATTERY_FLAG_NOT_PRESENT;
 705}
 706
 707static inline void zeus_setup_apm(void)
 708{
 709        apm_get_power_status = zeus_get_power_status;
 710}
 711#else
 712static inline void zeus_setup_apm(void)
 713{
 714}
 715#endif
 716
 717static int zeus_get_pcb_info(struct i2c_client *client, unsigned gpio,
 718                             unsigned ngpio, void *context)
 719{
 720        int i;
 721        u8 pcb_info = 0;
 722
 723        for (i = 0; i < 8; i++) {
 724                int pcb_bit = gpio + i + 8;
 725
 726                if (gpio_request(pcb_bit, "pcb info")) {
 727                        dev_err(&client->dev, "Can't request pcb info %d\n", i);
 728                        continue;
 729                }
 730
 731                if (gpio_direction_input(pcb_bit)) {
 732                        dev_err(&client->dev, "Can't read pcb info %d\n", i);
 733                        gpio_free(pcb_bit);
 734                        continue;
 735                }
 736
 737                pcb_info |= !!gpio_get_value(pcb_bit) << i;
 738
 739                gpio_free(pcb_bit);
 740        }
 741
 742        dev_info(&client->dev, "Zeus PCB version %d issue %d\n",
 743                 pcb_info >> 4, pcb_info & 0xf);
 744
 745        return 0;
 746}
 747
 748static struct pca953x_platform_data zeus_pca953x_pdata[] = {
 749        [0] = { .gpio_base      = ZEUS_EXT0_GPIO_BASE, },
 750        [1] = {
 751                .gpio_base      = ZEUS_EXT1_GPIO_BASE,
 752                .setup          = zeus_get_pcb_info,
 753        },
 754        [2] = { .gpio_base = ZEUS_USER_GPIO_BASE, },
 755};
 756
 757static struct i2c_board_info __initdata zeus_i2c_devices[] = {
 758        {
 759                I2C_BOARD_INFO("pca9535",       0x21),
 760                .platform_data  = &zeus_pca953x_pdata[0],
 761        },
 762        {
 763                I2C_BOARD_INFO("pca9535",       0x22),
 764                .platform_data  = &zeus_pca953x_pdata[1],
 765        },
 766        {
 767                I2C_BOARD_INFO("pca9535",       0x20),
 768                .platform_data  = &zeus_pca953x_pdata[2],
 769                .irq            = PXA_GPIO_TO_IRQ(ZEUS_EXTGPIO_GPIO),
 770        },
 771        { I2C_BOARD_INFO("lm75a",       0x48) },
 772        { I2C_BOARD_INFO("24c01",       0x50) },
 773        { I2C_BOARD_INFO("isl1208",     0x6f) },
 774};
 775
 776static mfp_cfg_t zeus_pin_config[] __initdata = {
 777        /* AC97 */
 778        GPIO28_AC97_BITCLK,
 779        GPIO29_AC97_SDATA_IN_0,
 780        GPIO30_AC97_SDATA_OUT,
 781        GPIO31_AC97_SYNC,
 782
 783        GPIO15_nCS_1,
 784        GPIO78_nCS_2,
 785        GPIO80_nCS_4,
 786        GPIO33_nCS_5,
 787
 788        GPIO22_GPIO,
 789        GPIO32_MMC_CLK,
 790        GPIO92_MMC_DAT_0,
 791        GPIO109_MMC_DAT_1,
 792        GPIO110_MMC_DAT_2,
 793        GPIO111_MMC_DAT_3,
 794        GPIO112_MMC_CMD,
 795
 796        GPIO88_USBH1_PWR,
 797        GPIO89_USBH1_PEN,
 798        GPIO119_USBH2_PWR,
 799        GPIO120_USBH2_PEN,
 800
 801        GPIO86_LCD_LDD_16,
 802        GPIO87_LCD_LDD_17,
 803
 804        GPIO102_GPIO,
 805        GPIO104_CIF_DD_2,
 806        GPIO105_CIF_DD_1,
 807
 808        GPIO81_SSP3_TXD,
 809        GPIO82_SSP3_RXD,
 810        GPIO83_SSP3_SFRM,
 811        GPIO84_SSP3_SCLK,
 812
 813        GPIO48_nPOE,
 814        GPIO49_nPWE,
 815        GPIO50_nPIOR,
 816        GPIO51_nPIOW,
 817        GPIO85_nPCE_1,
 818        GPIO54_nPCE_2,
 819        GPIO79_PSKTSEL,
 820        GPIO55_nPREG,
 821        GPIO56_nPWAIT,
 822        GPIO57_nIOIS16,
 823        GPIO36_GPIO,            /* CF CD */
 824        GPIO97_GPIO,            /* CF PWREN */
 825        GPIO99_GPIO,            /* CF RDY */
 826};
 827
 828/*
 829 * DM9k MSCx settings:  SRAM, 16 bits
 830 *                      17 cycles delay first access
 831 *                       5 cycles delay next access
 832 *                      13 cycles recovery time
 833 *                      faster device
 834 */
 835#define DM9K_MSC_VALUE          0xe4c9
 836
 837static void __init zeus_init(void)
 838{
 839        u16 dm9000_msc = DM9K_MSC_VALUE;
 840        u32 msc0, msc1;
 841
 842        system_rev = __raw_readw(ZEUS_CPLD_VERSION);
 843        pr_info("Zeus CPLD V%dI%d\n", (system_rev & 0xf0) >> 4, (system_rev & 0x0f));
 844
 845        /* Fix timings for dm9000s (CS1/CS2)*/
 846        msc0 = (__raw_readl(MSC0) & 0x0000ffff) | (dm9000_msc << 16);
 847        msc1 = (__raw_readl(MSC1) & 0xffff0000) | dm9000_msc;
 848        __raw_writel(msc0, MSC0);
 849        __raw_writel(msc1, MSC1);
 850
 851        pm_power_off = zeus_power_off;
 852        zeus_setup_apm();
 853
 854        pxa2xx_mfp_config(ARRAY_AND_SIZE(zeus_pin_config));
 855
 856        platform_add_devices(zeus_devices, ARRAY_SIZE(zeus_devices));
 857
 858        zeus_register_ohci();
 859
 860        if (zeus_setup_fb_gpios())
 861                pr_err("Failed to setup fb gpios\n");
 862        else
 863                pxa_set_fb_info(NULL, &zeus_fb_info);
 864
 865        pxa_set_mci_info(&zeus_mci_platform_data);
 866        pxa_set_udc_info(&zeus_udc_info);
 867        pxa_set_ac97_info(&zeus_ac97_info);
 868        pxa_set_i2c_info(NULL);
 869        i2c_register_board_info(0, ARRAY_AND_SIZE(zeus_i2c_devices));
 870        pxa2xx_set_spi_info(3, &pxa2xx_spi_ssp3_master_info);
 871        spi_register_board_info(zeus_spi_board_info, ARRAY_SIZE(zeus_spi_board_info));
 872
 873        regulator_has_full_constraints();
 874}
 875
 876static struct map_desc zeus_io_desc[] __initdata = {
 877        {
 878                .virtual = (unsigned long)ZEUS_CPLD_VERSION,
 879                .pfn     = __phys_to_pfn(ZEUS_CPLD_VERSION_PHYS),
 880                .length  = 0x1000,
 881                .type    = MT_DEVICE,
 882        },
 883        {
 884                .virtual = (unsigned long)ZEUS_CPLD_ISA_IRQ,
 885                .pfn     = __phys_to_pfn(ZEUS_CPLD_ISA_IRQ_PHYS),
 886                .length  = 0x1000,
 887                .type    = MT_DEVICE,
 888        },
 889        {
 890                .virtual = (unsigned long)ZEUS_CPLD_CONTROL,
 891                .pfn     = __phys_to_pfn(ZEUS_CPLD_CONTROL_PHYS),
 892                .length  = 0x1000,
 893                .type    = MT_DEVICE,
 894        },
 895        {
 896                .virtual = (unsigned long)ZEUS_PC104IO,
 897                .pfn     = __phys_to_pfn(ZEUS_PC104IO_PHYS),
 898                .length  = 0x00800000,
 899                .type    = MT_DEVICE,
 900        },
 901};
 902
 903static void __init zeus_map_io(void)
 904{
 905        pxa27x_map_io();
 906
 907        iotable_init(zeus_io_desc, ARRAY_SIZE(zeus_io_desc));
 908
 909        /* Clear PSPR to ensure a full restart on wake-up. */
 910        PMCR = PSPR = 0;
 911
 912        /* enable internal 32.768Khz oscillator (ignore OSCC_OOK) */
 913        writel(readl(OSCC) | OSCC_OON, OSCC);
 914
 915        /* Some clock cycles later (from OSCC_ON), programme PCFR (OPDE...).
 916         * float chip selects and PCMCIA */
 917        PCFR = PCFR_OPDE | PCFR_DC_EN | PCFR_FS | PCFR_FP;
 918}
 919
 920MACHINE_START(ARCOM_ZEUS, "Arcom/Eurotech ZEUS")
 921        /* Maintainer: Marc Zyngier <maz@misterjones.org> */
 922        .atag_offset    = 0x100,
 923        .map_io         = zeus_map_io,
 924        .nr_irqs        = ZEUS_NR_IRQS,
 925        .init_irq       = zeus_init_irq,
 926        .handle_irq     = pxa27x_handle_irq,
 927        .init_time      = pxa_timer_init,
 928        .init_machine   = zeus_init,
 929        .restart        = pxa_restart,
 930MACHINE_END
 931
 932