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/pca953x.h>
  29#include <linux/apm-emulation.h>
  30#include <linux/can/platform/mcp251x.h>
  31
  32#include <asm/mach-types.h>
  33#include <asm/mach/arch.h>
  34#include <asm/mach/map.h>
  35
  36#include <plat/i2c.h>
  37
  38#include <mach/pxa2xx-regs.h>
  39#include <mach/regs-uart.h>
  40#include <mach/ohci.h>
  41#include <mach/mmc.h>
  42#include <mach/pxa27x-udc.h>
  43#include <mach/udc.h>
  44#include <mach/pxafb.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#include <mach/smemc.h>
  51
  52#include "generic.h"
  53
  54/*
  55 * Interrupt handling
  56 */
  57
  58static unsigned long zeus_irq_enabled_mask;
  59static const int zeus_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, };
  60static const int zeus_isa_irq_map[] = {
  61        0,              /* ISA irq #0, invalid */
  62        0,              /* ISA irq #1, invalid */
  63        0,              /* ISA irq #2, invalid */
  64        1 << 0,         /* ISA irq #3 */
  65        1 << 1,         /* ISA irq #4 */
  66        1 << 2,         /* ISA irq #5 */
  67        1 << 3,         /* ISA irq #6 */
  68        1 << 4,         /* ISA irq #7 */
  69        0,              /* ISA irq #8, invalid */
  70        0,              /* ISA irq #9, invalid */
  71        1 << 5,         /* ISA irq #10 */
  72        1 << 6,         /* ISA irq #11 */
  73        1 << 7,         /* ISA irq #12 */
  74};
  75
  76static inline int zeus_irq_to_bitmask(unsigned int irq)
  77{
  78        return zeus_isa_irq_map[irq - PXA_ISA_IRQ(0)];
  79}
  80
  81static inline int zeus_bit_to_irq(int bit)
  82{
  83        return zeus_isa_irqs[bit] + PXA_ISA_IRQ(0);
  84}
  85
  86static void zeus_ack_irq(struct irq_data *d)
  87{
  88        __raw_writew(zeus_irq_to_bitmask(d->irq), ZEUS_CPLD_ISA_IRQ);
  89}
  90
  91static void zeus_mask_irq(struct irq_data *d)
  92{
  93        zeus_irq_enabled_mask &= ~(zeus_irq_to_bitmask(d->irq));
  94}
  95
  96static void zeus_unmask_irq(struct irq_data *d)
  97{
  98        zeus_irq_enabled_mask |= zeus_irq_to_bitmask(d->irq);
  99}
 100
 101static inline unsigned long zeus_irq_pending(void)
 102{
 103        return __raw_readw(ZEUS_CPLD_ISA_IRQ) & zeus_irq_enabled_mask;
 104}
 105
 106static void zeus_irq_handler(unsigned int irq, struct irq_desc *desc)
 107{
 108        unsigned long pending;
 109
 110        pending = zeus_irq_pending();
 111        do {
 112                /* we're in a chained irq handler,
 113                 * so ack the interrupt by hand */
 114                desc->irq_data.chip->irq_ack(&desc->irq_data);
 115
 116                if (likely(pending)) {
 117                        irq = zeus_bit_to_irq(__ffs(pending));
 118                        generic_handle_irq(irq);
 119                }
 120                pending = zeus_irq_pending();
 121        } while (pending);
 122}
 123
 124static struct irq_chip zeus_irq_chip = {
 125        .name           = "ISA",
 126        .irq_ack        = zeus_ack_irq,
 127        .irq_mask       = zeus_mask_irq,
 128        .irq_unmask     = zeus_unmask_irq,
 129};
 130
 131static void __init zeus_init_irq(void)
 132{
 133        int level;
 134        int isa_irq;
 135
 136        pxa27x_init_irq();
 137
 138        /* Peripheral IRQs. It would be nice to move those inside driver
 139           configuration, but it is not supported at the moment. */
 140        set_irq_type(gpio_to_irq(ZEUS_AC97_GPIO),       IRQ_TYPE_EDGE_RISING);
 141        set_irq_type(gpio_to_irq(ZEUS_WAKEUP_GPIO),     IRQ_TYPE_EDGE_RISING);
 142        set_irq_type(gpio_to_irq(ZEUS_PTT_GPIO),        IRQ_TYPE_EDGE_RISING);
 143        set_irq_type(gpio_to_irq(ZEUS_EXTGPIO_GPIO),    IRQ_TYPE_EDGE_FALLING);
 144        set_irq_type(gpio_to_irq(ZEUS_CAN_GPIO),        IRQ_TYPE_EDGE_FALLING);
 145
 146        /* Setup ISA IRQs */
 147        for (level = 0; level < ARRAY_SIZE(zeus_isa_irqs); level++) {
 148                isa_irq = zeus_bit_to_irq(level);
 149                set_irq_chip(isa_irq, &zeus_irq_chip);
 150                set_irq_handler(isa_irq, handle_edge_irq);
 151                set_irq_flags(isa_irq, IRQF_VALID | IRQF_PROBE);
 152        }
 153
 154        set_irq_type(gpio_to_irq(ZEUS_ISA_GPIO), IRQ_TYPE_EDGE_RISING);
 155        set_irq_chained_handler(gpio_to_irq(ZEUS_ISA_GPIO), zeus_irq_handler);
 156}
 157
 158
 159/*
 160 * Platform devices
 161 */
 162
 163/* Flash */
 164static struct resource zeus_mtd_resources[] = {
 165        [0] = { /* NOR Flash (up to 64MB) */
 166                .start  = ZEUS_FLASH_PHYS,
 167                .end    = ZEUS_FLASH_PHYS + SZ_64M - 1,
 168                .flags  = IORESOURCE_MEM,
 169        },
 170        [1] = { /* SRAM */
 171                .start  = ZEUS_SRAM_PHYS,
 172                .end    = ZEUS_SRAM_PHYS + SZ_512K - 1,
 173                .flags  = IORESOURCE_MEM,
 174        },
 175};
 176
 177static struct physmap_flash_data zeus_flash_data[] = {
 178        [0] = {
 179                .width          = 2,
 180                .parts          = NULL,
 181                .nr_parts       = 0,
 182        },
 183};
 184
 185static struct platform_device zeus_mtd_devices[] = {
 186        [0] = {
 187                .name           = "physmap-flash",
 188                .id             = 0,
 189                .dev            = {
 190                        .platform_data = &zeus_flash_data[0],
 191                },
 192                .resource       = &zeus_mtd_resources[0],
 193                .num_resources  = 1,
 194        },
 195};
 196
 197/* Serial */
 198static struct resource zeus_serial_resources[] = {
 199        {
 200                .start  = 0x10000000,
 201                .end    = 0x1000000f,
 202                .flags  = IORESOURCE_MEM,
 203        },
 204        {
 205                .start  = 0x10800000,
 206                .end    = 0x1080000f,
 207                .flags  = IORESOURCE_MEM,
 208        },
 209        {
 210                .start  = 0x11000000,
 211                .end    = 0x1100000f,
 212                .flags  = IORESOURCE_MEM,
 213        },
 214        {
 215                .start  = 0x40100000,
 216                .end    = 0x4010001f,
 217                .flags  = IORESOURCE_MEM,
 218        },
 219        {
 220                .start  = 0x40200000,
 221                .end    = 0x4020001f,
 222                .flags  = IORESOURCE_MEM,
 223        },
 224        {
 225                .start  = 0x40700000,
 226                .end    = 0x4070001f,
 227                .flags  = IORESOURCE_MEM,
 228        },
 229};
 230
 231static struct plat_serial8250_port serial_platform_data[] = {
 232        /* External UARTs */
 233        /* FIXME: Shared IRQs on COM1-COM4 will not work properly on v1i1 hardware. */
 234        { /* COM1 */
 235                .mapbase        = 0x10000000,
 236                .irq            = gpio_to_irq(ZEUS_UARTA_GPIO),
 237                .irqflags       = IRQF_TRIGGER_RISING,
 238                .uartclk        = 14745600,
 239                .regshift       = 1,
 240                .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 241                .iotype         = UPIO_MEM,
 242        },
 243        { /* COM2 */
 244                .mapbase        = 0x10800000,
 245                .irq            = gpio_to_irq(ZEUS_UARTB_GPIO),
 246                .irqflags       = IRQF_TRIGGER_RISING,
 247                .uartclk        = 14745600,
 248                .regshift       = 1,
 249                .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 250                .iotype         = UPIO_MEM,
 251        },
 252        { /* COM3 */
 253                .mapbase        = 0x11000000,
 254                .irq            = gpio_to_irq(ZEUS_UARTC_GPIO),
 255                .irqflags       = IRQF_TRIGGER_RISING,
 256                .uartclk        = 14745600,
 257                .regshift       = 1,
 258                .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 259                .iotype         = UPIO_MEM,
 260        },
 261        { /* COM4 */
 262                .mapbase        = 0x11800000,
 263                .irq            = gpio_to_irq(ZEUS_UARTD_GPIO),
 264                .irqflags       = IRQF_TRIGGER_RISING,
 265                .uartclk        = 14745600,
 266                .regshift       = 1,
 267                .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 268                .iotype         = UPIO_MEM,
 269        },
 270        /* Internal UARTs */
 271        { /* FFUART */
 272                .membase        = (void *)&FFUART,
 273                .mapbase        = __PREG(FFUART),
 274                .irq            = IRQ_FFUART,
 275                .uartclk        = 921600 * 16,
 276                .regshift       = 2,
 277                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 278                .iotype         = UPIO_MEM,
 279        },
 280        { /* BTUART */
 281                .membase        = (void *)&BTUART,
 282                .mapbase        = __PREG(BTUART),
 283                .irq            = IRQ_BTUART,
 284                .uartclk        = 921600 * 16,
 285                .regshift       = 2,
 286                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 287                .iotype         = UPIO_MEM,
 288        },
 289        { /* STUART */
 290                .membase        = (void *)&STUART,
 291                .mapbase        = __PREG(STUART),
 292                .irq            = IRQ_STUART,
 293                .uartclk        = 921600 * 16,
 294                .regshift       = 2,
 295                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 296                .iotype         = UPIO_MEM,
 297        },
 298        { },
 299};
 300
 301static struct platform_device zeus_serial_device = {
 302        .name = "serial8250",
 303        .id   = PLAT8250_DEV_PLATFORM,
 304        .dev  = {
 305                .platform_data = serial_platform_data,
 306        },
 307        .num_resources  = ARRAY_SIZE(zeus_serial_resources),
 308        .resource       = zeus_serial_resources,
 309};
 310
 311/* Ethernet */
 312static struct resource zeus_dm9k0_resource[] = {
 313        [0] = {
 314                .start = ZEUS_ETH0_PHYS,
 315                .end   = ZEUS_ETH0_PHYS + 1,
 316                .flags = IORESOURCE_MEM
 317        },
 318        [1] = {
 319                .start = ZEUS_ETH0_PHYS + 2,
 320                .end   = ZEUS_ETH0_PHYS + 3,
 321                .flags = IORESOURCE_MEM
 322        },
 323        [2] = {
 324                .start = gpio_to_irq(ZEUS_ETH0_GPIO),
 325                .end   = gpio_to_irq(ZEUS_ETH0_GPIO),
 326                .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 327        },
 328};
 329
 330static struct resource zeus_dm9k1_resource[] = {
 331        [0] = {
 332                .start = ZEUS_ETH1_PHYS,
 333                .end   = ZEUS_ETH1_PHYS + 1,
 334                .flags = IORESOURCE_MEM
 335        },
 336        [1] = {
 337                .start = ZEUS_ETH1_PHYS + 2,
 338                .end   = ZEUS_ETH1_PHYS + 3,
 339                .flags = IORESOURCE_MEM,
 340        },
 341        [2] = {
 342                .start = gpio_to_irq(ZEUS_ETH1_GPIO),
 343                .end   = gpio_to_irq(ZEUS_ETH1_GPIO),
 344                .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 345        },
 346};
 347
 348static struct dm9000_plat_data zeus_dm9k_platdata = {
 349        .flags          = DM9000_PLATF_16BITONLY,
 350};
 351
 352static struct platform_device zeus_dm9k0_device = {
 353        .name           = "dm9000",
 354        .id             = 0,
 355        .num_resources  = ARRAY_SIZE(zeus_dm9k0_resource),
 356        .resource       = zeus_dm9k0_resource,
 357        .dev            = {
 358                .platform_data = &zeus_dm9k_platdata,
 359        }
 360};
 361
 362static struct platform_device zeus_dm9k1_device = {
 363        .name           = "dm9000",
 364        .id             = 1,
 365        .num_resources  = ARRAY_SIZE(zeus_dm9k1_resource),
 366        .resource       = zeus_dm9k1_resource,
 367        .dev            = {
 368                .platform_data = &zeus_dm9k_platdata,
 369        }
 370};
 371
 372/* External SRAM */
 373static struct resource zeus_sram_resource = {
 374        .start          = ZEUS_SRAM_PHYS,
 375        .end            = ZEUS_SRAM_PHYS + ZEUS_SRAM_SIZE * 2 - 1,
 376        .flags          = IORESOURCE_MEM,
 377};
 378
 379static struct platform_device zeus_sram_device = {
 380        .name           = "pxa2xx-8bit-sram",
 381        .id             = 0,
 382        .num_resources  = 1,
 383        .resource       = &zeus_sram_resource,
 384};
 385
 386/* SPI interface on SSP3 */
 387static struct pxa2xx_spi_master pxa2xx_spi_ssp3_master_info = {
 388        .num_chipselect = 1,
 389        .enable_dma     = 1,
 390};
 391
 392/* CAN bus on SPI */
 393static int zeus_mcp2515_setup(struct spi_device *sdev)
 394{
 395        int err;
 396
 397        err = gpio_request(ZEUS_CAN_SHDN_GPIO, "CAN shutdown");
 398        if (err)
 399                return err;
 400
 401        err = gpio_direction_output(ZEUS_CAN_SHDN_GPIO, 1);
 402        if (err) {
 403                gpio_free(ZEUS_CAN_SHDN_GPIO);
 404                return err;
 405        }
 406
 407        return 0;
 408}
 409
 410static int zeus_mcp2515_transceiver_enable(int enable)
 411{
 412        gpio_set_value(ZEUS_CAN_SHDN_GPIO, !enable);
 413        return 0;
 414}
 415
 416static struct mcp251x_platform_data zeus_mcp2515_pdata = {
 417        .oscillator_frequency   = 16*1000*1000,
 418        .board_specific_setup   = zeus_mcp2515_setup,
 419        .power_enable           = zeus_mcp2515_transceiver_enable,
 420};
 421
 422static struct spi_board_info zeus_spi_board_info[] = {
 423        [0] = {
 424                .modalias       = "mcp2515",
 425                .platform_data  = &zeus_mcp2515_pdata,
 426                .irq            = gpio_to_irq(ZEUS_CAN_GPIO),
 427                .max_speed_hz   = 1*1000*1000,
 428                .bus_num        = 3,
 429                .mode           = SPI_MODE_0,
 430                .chip_select    = 0,
 431        },
 432};
 433
 434/* Leds */
 435static struct gpio_led zeus_leds[] = {
 436        [0] = {
 437                .name            = "zeus:yellow:1",
 438                .default_trigger = "heartbeat",
 439                .gpio            = ZEUS_EXT0_GPIO(3),
 440                .active_low      = 1,
 441        },
 442        [1] = {
 443                .name            = "zeus:yellow:2",
 444                .default_trigger = "default-on",
 445                .gpio            = ZEUS_EXT0_GPIO(4),
 446                .active_low      = 1,
 447        },
 448        [2] = {
 449                .name            = "zeus:yellow:3",
 450                .default_trigger = "default-on",
 451                .gpio            = ZEUS_EXT0_GPIO(5),
 452                .active_low      = 1,
 453        },
 454};
 455
 456static struct gpio_led_platform_data zeus_leds_info = {
 457        .leds           = zeus_leds,
 458        .num_leds       = ARRAY_SIZE(zeus_leds),
 459};
 460
 461static struct platform_device zeus_leds_device = {
 462        .name           = "leds-gpio",
 463        .id             = -1,
 464        .dev            = {
 465                .platform_data  = &zeus_leds_info,
 466        },
 467};
 468
 469static void zeus_cf_reset(int state)
 470{
 471        u16 cpld_state = __raw_readw(ZEUS_CPLD_CONTROL);
 472
 473        if (state)
 474                cpld_state |= ZEUS_CPLD_CONTROL_CF_RST;
 475        else
 476                cpld_state &= ~ZEUS_CPLD_CONTROL_CF_RST;
 477
 478        __raw_writew(cpld_state, ZEUS_CPLD_CONTROL);
 479}
 480
 481static struct arcom_pcmcia_pdata zeus_pcmcia_info = {
 482        .cd_gpio        = ZEUS_CF_CD_GPIO,
 483        .rdy_gpio       = ZEUS_CF_RDY_GPIO,
 484        .pwr_gpio       = ZEUS_CF_PWEN_GPIO,
 485        .reset          = zeus_cf_reset,
 486};
 487
 488static struct platform_device zeus_pcmcia_device = {
 489        .name           = "zeus-pcmcia",
 490        .id             = -1,
 491        .dev            = {
 492                .platform_data  = &zeus_pcmcia_info,
 493        },
 494};
 495
 496static struct resource zeus_max6369_resource = {
 497        .start          = ZEUS_CPLD_EXTWDOG_PHYS,
 498        .end            = ZEUS_CPLD_EXTWDOG_PHYS,
 499        .flags          = IORESOURCE_MEM,
 500};
 501
 502struct platform_device zeus_max6369_device = {
 503        .name           = "max6369_wdt",
 504        .id             = -1,
 505        .resource       = &zeus_max6369_resource,
 506        .num_resources  = 1,
 507};
 508
 509static struct platform_device *zeus_devices[] __initdata = {
 510        &zeus_serial_device,
 511        &zeus_mtd_devices[0],
 512        &zeus_dm9k0_device,
 513        &zeus_dm9k1_device,
 514        &zeus_sram_device,
 515        &zeus_leds_device,
 516        &zeus_pcmcia_device,
 517        &zeus_max6369_device,
 518};
 519
 520/* AC'97 */
 521static pxa2xx_audio_ops_t zeus_ac97_info = {
 522        .reset_gpio = 95,
 523};
 524
 525
 526/*
 527 * USB host
 528 */
 529
 530static int zeus_ohci_init(struct device *dev)
 531{
 532        int err;
 533
 534        /* Switch on port 2. */
 535        if ((err = gpio_request(ZEUS_USB2_PWREN_GPIO, "USB2_PWREN"))) {
 536                dev_err(dev, "Can't request USB2_PWREN\n");
 537                return err;
 538        }
 539
 540        if ((err = gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 1))) {
 541                gpio_free(ZEUS_USB2_PWREN_GPIO);
 542                dev_err(dev, "Can't enable USB2_PWREN\n");
 543                return err;
 544        }
 545
 546        /* Port 2 is shared between host and client interface. */
 547        UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
 548
 549        return 0;
 550}
 551
 552static void zeus_ohci_exit(struct device *dev)
 553{
 554        /* Power-off port 2 */
 555        gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 0);
 556        gpio_free(ZEUS_USB2_PWREN_GPIO);
 557}
 558
 559static struct pxaohci_platform_data zeus_ohci_platform_data = {
 560        .port_mode      = PMM_NPS_MODE,
 561        /* Clear Power Control Polarity Low and set Power Sense
 562         * Polarity Low. Supply power to USB ports. */
 563        .flags          = ENABLE_PORT_ALL | POWER_SENSE_LOW,
 564        .init           = zeus_ohci_init,
 565        .exit           = zeus_ohci_exit,
 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
 675#ifdef CONFIG_PM
 676static void zeus_power_off(void)
 677{
 678        local_irq_disable();
 679        pxa27x_cpu_suspend(PWRMODE_DEEPSLEEP);
 680}
 681#else
 682#define zeus_power_off   NULL
 683#endif
 684
 685#ifdef CONFIG_APM_EMULATION
 686static void zeus_get_power_status(struct apm_power_info *info)
 687{
 688        /* Power supply is always present */
 689        info->ac_line_status    = APM_AC_ONLINE;
 690        info->battery_status    = APM_BATTERY_STATUS_NOT_PRESENT;
 691        info->battery_flag      = APM_BATTERY_FLAG_NOT_PRESENT;
 692}
 693
 694static inline void zeus_setup_apm(void)
 695{
 696        apm_get_power_status = zeus_get_power_status;
 697}
 698#else
 699static inline void zeus_setup_apm(void)
 700{
 701}
 702#endif
 703
 704static int zeus_get_pcb_info(struct i2c_client *client, unsigned gpio,
 705                             unsigned ngpio, void *context)
 706{
 707        int i;
 708        u8 pcb_info = 0;
 709
 710        for (i = 0; i < 8; i++) {
 711                int pcb_bit = gpio + i + 8;
 712
 713                if (gpio_request(pcb_bit, "pcb info")) {
 714                        dev_err(&client->dev, "Can't request pcb info %d\n", i);
 715                        continue;
 716                }
 717
 718                if (gpio_direction_input(pcb_bit)) {
 719                        dev_err(&client->dev, "Can't read pcb info %d\n", i);
 720                        gpio_free(pcb_bit);
 721                        continue;
 722                }
 723
 724                pcb_info |= !!gpio_get_value(pcb_bit) << i;
 725
 726                gpio_free(pcb_bit);
 727        }
 728
 729        dev_info(&client->dev, "Zeus PCB version %d issue %d\n",
 730                 pcb_info >> 4, pcb_info & 0xf);
 731
 732        return 0;
 733}
 734
 735static struct pca953x_platform_data zeus_pca953x_pdata[] = {
 736        [0] = { .gpio_base      = ZEUS_EXT0_GPIO_BASE, },
 737        [1] = {
 738                .gpio_base      = ZEUS_EXT1_GPIO_BASE,
 739                .setup          = zeus_get_pcb_info,
 740        },
 741        [2] = { .gpio_base = ZEUS_USER_GPIO_BASE, },
 742};
 743
 744static struct i2c_board_info __initdata zeus_i2c_devices[] = {
 745        {
 746                I2C_BOARD_INFO("pca9535",       0x21),
 747                .platform_data  = &zeus_pca953x_pdata[0],
 748        },
 749        {
 750                I2C_BOARD_INFO("pca9535",       0x22),
 751                .platform_data  = &zeus_pca953x_pdata[1],
 752        },
 753        {
 754                I2C_BOARD_INFO("pca9535",       0x20),
 755                .platform_data  = &zeus_pca953x_pdata[2],
 756                .irq            = gpio_to_irq(ZEUS_EXTGPIO_GPIO),
 757        },
 758        { I2C_BOARD_INFO("lm75a",       0x48) },
 759        { I2C_BOARD_INFO("24c01",       0x50) },
 760        { I2C_BOARD_INFO("isl1208",     0x6f) },
 761};
 762
 763static mfp_cfg_t zeus_pin_config[] __initdata = {
 764        /* AC97 */
 765        GPIO28_AC97_BITCLK,
 766        GPIO29_AC97_SDATA_IN_0,
 767        GPIO30_AC97_SDATA_OUT,
 768        GPIO31_AC97_SYNC,
 769
 770        GPIO15_nCS_1,
 771        GPIO78_nCS_2,
 772        GPIO80_nCS_4,
 773        GPIO33_nCS_5,
 774
 775        GPIO22_GPIO,
 776        GPIO32_MMC_CLK,
 777        GPIO92_MMC_DAT_0,
 778        GPIO109_MMC_DAT_1,
 779        GPIO110_MMC_DAT_2,
 780        GPIO111_MMC_DAT_3,
 781        GPIO112_MMC_CMD,
 782
 783        GPIO88_USBH1_PWR,
 784        GPIO89_USBH1_PEN,
 785        GPIO119_USBH2_PWR,
 786        GPIO120_USBH2_PEN,
 787
 788        GPIO86_LCD_LDD_16,
 789        GPIO87_LCD_LDD_17,
 790
 791        GPIO102_GPIO,
 792        GPIO104_CIF_DD_2,
 793        GPIO105_CIF_DD_1,
 794
 795        GPIO81_SSP3_TXD,
 796        GPIO82_SSP3_RXD,
 797        GPIO83_SSP3_SFRM,
 798        GPIO84_SSP3_SCLK,
 799
 800        GPIO48_nPOE,
 801        GPIO49_nPWE,
 802        GPIO50_nPIOR,
 803        GPIO51_nPIOW,
 804        GPIO85_nPCE_1,
 805        GPIO54_nPCE_2,
 806        GPIO79_PSKTSEL,
 807        GPIO55_nPREG,
 808        GPIO56_nPWAIT,
 809        GPIO57_nIOIS16,
 810        GPIO36_GPIO,            /* CF CD */
 811        GPIO97_GPIO,            /* CF PWREN */
 812        GPIO99_GPIO,            /* CF RDY */
 813};
 814
 815/*
 816 * DM9k MSCx settings:  SRAM, 16 bits
 817 *                      17 cycles delay first access
 818 *                       5 cycles delay next access
 819 *                      13 cycles recovery time
 820 *                      faster device
 821 */
 822#define DM9K_MSC_VALUE          0xe4c9
 823
 824static void __init zeus_init(void)
 825{
 826        u16 dm9000_msc = DM9K_MSC_VALUE;
 827        u32 msc0, msc1;
 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 = (__raw_readl(MSC0) & 0x0000ffff) | (dm9000_msc << 16);
 834        msc1 = (__raw_readl(MSC1) & 0xffff0000) | dm9000_msc;
 835        __raw_writel(msc0, MSC0);
 836        __raw_writel(msc1, MSC1);
 837
 838        pm_power_off = zeus_power_off;
 839        zeus_setup_apm();
 840
 841        pxa2xx_mfp_config(ARRAY_AND_SIZE(zeus_pin_config));
 842
 843        platform_add_devices(zeus_devices, ARRAY_SIZE(zeus_devices));
 844
 845        pxa_set_ohci_info(&zeus_ohci_platform_data);
 846
 847        if (zeus_setup_fb_gpios())
 848                pr_err("Failed to setup fb gpios\n");
 849        else
 850                set_pxa_fb_info(&zeus_fb_info);
 851
 852        pxa_set_mci_info(&zeus_mci_platform_data);
 853        pxa_set_udc_info(&zeus_udc_info);
 854        pxa_set_ac97_info(&zeus_ac97_info);
 855        pxa_set_i2c_info(NULL);
 856        i2c_register_board_info(0, ARRAY_AND_SIZE(zeus_i2c_devices));
 857        pxa2xx_set_spi_info(3, &pxa2xx_spi_ssp3_master_info);
 858        spi_register_board_info(zeus_spi_board_info, ARRAY_SIZE(zeus_spi_board_info));
 859}
 860
 861static struct map_desc zeus_io_desc[] __initdata = {
 862        {
 863                .virtual = ZEUS_CPLD_VERSION,
 864                .pfn     = __phys_to_pfn(ZEUS_CPLD_VERSION_PHYS),
 865                .length  = 0x1000,
 866                .type    = MT_DEVICE,
 867        },
 868        {
 869                .virtual = ZEUS_CPLD_ISA_IRQ,
 870                .pfn     = __phys_to_pfn(ZEUS_CPLD_ISA_IRQ_PHYS),
 871                .length  = 0x1000,
 872                .type    = MT_DEVICE,
 873        },
 874        {
 875                .virtual = ZEUS_CPLD_CONTROL,
 876                .pfn     = __phys_to_pfn(ZEUS_CPLD_CONTROL_PHYS),
 877                .length  = 0x1000,
 878                .type    = MT_DEVICE,
 879        },
 880        {
 881                .virtual = ZEUS_PC104IO,
 882                .pfn     = __phys_to_pfn(ZEUS_PC104IO_PHYS),
 883                .length  = 0x00800000,
 884                .type    = MT_DEVICE,
 885        },
 886};
 887
 888static void __init zeus_map_io(void)
 889{
 890        pxa27x_map_io();
 891
 892        iotable_init(zeus_io_desc, ARRAY_SIZE(zeus_io_desc));
 893
 894        /* Clear PSPR to ensure a full restart on wake-up. */
 895        PMCR = PSPR = 0;
 896
 897        /* enable internal 32.768Khz oscillator (ignore OSCC_OOK) */
 898        OSCC |= OSCC_OON;
 899
 900        /* Some clock cycles later (from OSCC_ON), programme PCFR (OPDE...).
 901         * float chip selects and PCMCIA */
 902        PCFR = PCFR_OPDE | PCFR_DC_EN | PCFR_FS | PCFR_FP;
 903}
 904
 905MACHINE_START(ARCOM_ZEUS, "Arcom/Eurotech ZEUS")
 906        /* Maintainer: Marc Zyngier <maz@misterjones.org> */
 907        .boot_params    = 0xa0000100,
 908        .map_io         = zeus_map_io,
 909        .nr_irqs        = ZEUS_NR_IRQS,
 910        .init_irq       = zeus_init_irq,
 911        .timer          = &pxa_timer,
 912        .init_machine   = zeus_init,
 913MACHINE_END
 914
 915