LXR linux/arch/arm/mach-orion5x/dns323-setup.c

   1/*
   2 * arch/arm/mach-orion5x/dns323-setup.c
   3 *
   4 * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
   5 *
   6 * Support for HW Rev C1:
   7 *
   8 * Copyright (C) 2010 Benjamin Herrenschmidt <benh@kernel.crashing.org>
   9 *
  10 * This program is free software; you can redistribute it and/or modify
  11 * it under the terms of the GNU Lesser General Public License as
  12 * published by the Free Software Foundation; either version 2 of the
  13 * License, or (at your option) any later version.
  14 *
  15 */
  16#include <linux/gpio.h>
  17#include <linux/kernel.h>
  18#include <linux/init.h>
  19#include <linux/delay.h>
  20#include <linux/platform_device.h>
  21#include <linux/pci.h>
  22#include <linux/irq.h>
  23#include <linux/mtd/physmap.h>
  24#include <linux/mv643xx_eth.h>
  25#include <linux/leds.h>
  26#include <linux/gpio_keys.h>
  27#include <linux/input.h>
  28#include <linux/i2c.h>
  29#include <linux/ata_platform.h>
  30#include <linux/phy.h>
  31#include <linux/marvell_phy.h>
  32#include <asm/mach-types.h>
  33#include <asm/mach/arch.h>
  34#include <asm/mach/pci.h>
  35#include <asm/system_info.h>
  36#include <plat/orion-gpio.h>
  37#include "orion5x.h"
  38#include "common.h"
  39#include "mpp.h"
  40
  41/* Rev A1 and B1 */
  42#define DNS323_GPIO_LED_RIGHT_AMBER     1
  43#define DNS323_GPIO_LED_LEFT_AMBER      2
  44#define DNS323_GPIO_SYSTEM_UP           3
  45#define DNS323_GPIO_LED_POWER1          4
  46#define DNS323_GPIO_LED_POWER2          5
  47#define DNS323_GPIO_OVERTEMP            6
  48#define DNS323_GPIO_RTC                 7
  49#define DNS323_GPIO_POWER_OFF           8
  50#define DNS323_GPIO_KEY_POWER           9
  51#define DNS323_GPIO_KEY_RESET           10
  52
  53/* Rev C1 */
  54#define DNS323C_GPIO_KEY_POWER          1
  55#define DNS323C_GPIO_POWER_OFF          2
  56#define DNS323C_GPIO_LED_RIGHT_AMBER    8
  57#define DNS323C_GPIO_LED_LEFT_AMBER     9
  58#define DNS323C_GPIO_LED_POWER          17
  59#define DNS323C_GPIO_FAN_BIT1           18
  60#define DNS323C_GPIO_FAN_BIT0           19
  61
  62/* Exposed to userspace, do not change */
  63enum {
  64        DNS323_REV_A1,  /* 0 */
  65        DNS323_REV_B1,  /* 1 */
  66        DNS323_REV_C1,  /* 2 */
  67};
  68
  69
  70/****************************************************************************
  71 * PCI setup
  72 */
  73
  74static int __init dns323_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  75{
  76        int irq;
  77
  78        /*
  79         * Check for devices with hard-wired IRQs.
  80         */
  81        irq = orion5x_pci_map_irq(dev, slot, pin);
  82        if (irq != -1)
  83                return irq;
  84
  85        return -1;
  86}
  87
  88static struct hw_pci dns323_pci __initdata = {
  89        .nr_controllers = 2,
  90        .setup          = orion5x_pci_sys_setup,
  91        .scan           = orion5x_pci_sys_scan_bus,
  92        .map_irq        = dns323_pci_map_irq,
  93};
  94
  95static int __init dns323_pci_init(void)
  96{
  97        /* Rev B1 and C1 doesn't really use its PCI bus, and initialising PCI
  98         * gets in the way of initialising the SATA controller.
  99         */
 100        if (machine_is_dns323() && system_rev == DNS323_REV_A1)
 101                pci_common_init(&dns323_pci);
 102
 103        return 0;
 104}
 105
 106subsys_initcall(dns323_pci_init);
 107
 108/****************************************************************************
 109 * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
 110 *
 111 * Layout as used by D-Link:
 112 *  0x00000000-0x00010000 : "MTD1"
 113 *  0x00010000-0x00020000 : "MTD2"
 114 *  0x00020000-0x001a0000 : "Linux Kernel"
 115 *  0x001a0000-0x007d0000 : "File System"
 116 *  0x007d0000-0x00800000 : "u-boot"
 117 */
 118
 119#define DNS323_NOR_BOOT_BASE 0xf4000000
 120#define DNS323_NOR_BOOT_SIZE SZ_8M
 121
 122static struct mtd_partition dns323_partitions[] = {
 123        {
 124                .name   = "MTD1",
 125                .size   = 0x00010000,
 126                .offset = 0,
 127        }, {
 128                .name   = "MTD2",
 129                .size   = 0x00010000,
 130                .offset = 0x00010000,
 131        }, {
 132                .name   = "Linux Kernel",
 133                .size   = 0x00180000,
 134                .offset = 0x00020000,
 135        }, {
 136                .name   = "File System",
 137                .size   = 0x00630000,
 138                .offset = 0x001A0000,
 139        }, {
 140                .name   = "u-boot",
 141                .size   = 0x00030000,
 142                .offset = 0x007d0000,
 143        },
 144};
 145
 146static struct physmap_flash_data dns323_nor_flash_data = {
 147        .width          = 1,
 148        .parts          = dns323_partitions,
 149        .nr_parts       = ARRAY_SIZE(dns323_partitions)
 150};
 151
 152static struct resource dns323_nor_flash_resource = {
 153        .flags          = IORESOURCE_MEM,
 154        .start          = DNS323_NOR_BOOT_BASE,
 155        .end            = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
 156};
 157
 158static struct platform_device dns323_nor_flash = {
 159        .name           = "physmap-flash",
 160        .id             = 0,
 161        .dev            = {
 162                .platform_data  = &dns323_nor_flash_data,
 163        },
 164        .resource       = &dns323_nor_flash_resource,
 165        .num_resources  = 1,
 166};
 167
 168/****************************************************************************
 169 * Ethernet
 170 */
 171
 172static struct mv643xx_eth_platform_data dns323_eth_data = {
 173        .phy_addr = MV643XX_ETH_PHY_ADDR(8),
 174};
 175
 176static int __init dns323_read_mac_addr(void)
 177{
 178        u_int8_t addr[6];
 179        void __iomem *mac_page;
 180
 181        /* MAC address is stored as a regular ol' string in /dev/mtdblock4
 182         * (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
 183         */
 184        mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
 185        if (!mac_page)
 186                return -ENOMEM;
 187
 188        if (!mac_pton((__force const char *) mac_page, addr))
 189                goto error_fail;
 190
 191        iounmap(mac_page);
 192        printk("DNS-323: Found ethernet MAC address: %pM\n", addr);
 193
 194        memcpy(dns323_eth_data.mac_addr, addr, 6);
 195
 196        return 0;
 197
 198error_fail:
 199        iounmap(mac_page);
 200        return -EINVAL;
 201}
 202
 203/****************************************************************************
 204 * GPIO LEDs (simple - doesn't use hardware blinking support)
 205 */
 206
 207static struct gpio_led dns323ab_leds[] = {
 208        {
 209                .name = "power:blue",
 210                .gpio = DNS323_GPIO_LED_POWER2,
 211                .default_trigger = "default-on",
 212        }, {
 213                .name = "right:amber",
 214                .gpio = DNS323_GPIO_LED_RIGHT_AMBER,
 215                .active_low = 1,
 216        }, {
 217                .name = "left:amber",
 218                .gpio = DNS323_GPIO_LED_LEFT_AMBER,
 219                .active_low = 1,
 220        },
 221};
 222
 223
 224static struct gpio_led dns323c_leds[] = {
 225        {
 226                .name = "power:blue",
 227                .gpio = DNS323C_GPIO_LED_POWER,
 228                .default_trigger = "timer",
 229                .active_low = 1,
 230        }, {
 231                .name = "right:amber",
 232                .gpio = DNS323C_GPIO_LED_RIGHT_AMBER,
 233                .active_low = 1,
 234        }, {
 235                .name = "left:amber",
 236                .gpio = DNS323C_GPIO_LED_LEFT_AMBER,
 237                .active_low = 1,
 238        },
 239};
 240
 241
 242static struct gpio_led_platform_data dns323ab_led_data = {
 243        .num_leds       = ARRAY_SIZE(dns323ab_leds),
 244        .leds           = dns323ab_leds,
 245        .gpio_blink_set = orion_gpio_led_blink_set,
 246};
 247
 248static struct gpio_led_platform_data dns323c_led_data = {
 249        .num_leds       = ARRAY_SIZE(dns323c_leds),
 250        .leds           = dns323c_leds,
 251        .gpio_blink_set = orion_gpio_led_blink_set,
 252};
 253
 254static struct platform_device dns323_gpio_leds = {
 255        .name           = "leds-gpio",
 256        .id             = -1,
 257        .dev            = {
 258                .platform_data  = &dns323ab_led_data,
 259        },
 260};
 261
 262/****************************************************************************
 263 * GPIO Attached Keys
 264 */
 265
 266static struct gpio_keys_button dns323ab_buttons[] = {
 267        {
 268                .code           = KEY_RESTART,
 269                .gpio           = DNS323_GPIO_KEY_RESET,
 270                .desc           = "Reset Button",
 271                .active_low     = 1,
 272        }, {
 273                .code           = KEY_POWER,
 274                .gpio           = DNS323_GPIO_KEY_POWER,
 275                .desc           = "Power Button",
 276                .active_low     = 1,
 277        },
 278};
 279
 280static struct gpio_keys_platform_data dns323ab_button_data = {
 281        .buttons        = dns323ab_buttons,
 282        .nbuttons       = ARRAY_SIZE(dns323ab_buttons),
 283};
 284
 285static struct gpio_keys_button dns323c_buttons[] = {
 286        {
 287                .code           = KEY_POWER,
 288                .gpio           = DNS323C_GPIO_KEY_POWER,
 289                .desc           = "Power Button",
 290                .active_low     = 1,
 291        },
 292};
 293
 294static struct gpio_keys_platform_data dns323c_button_data = {
 295        .buttons        = dns323c_buttons,
 296        .nbuttons       = ARRAY_SIZE(dns323c_buttons),
 297};
 298
 299static struct platform_device dns323_button_device = {
 300        .name           = "gpio-keys",
 301        .id             = -1,
 302        .num_resources  = 0,
 303        .dev            = {
 304                .platform_data  = &dns323ab_button_data,
 305        },
 306};
 307
 308/*****************************************************************************
 309 * SATA
 310 */
 311static struct mv_sata_platform_data dns323_sata_data = {
 312       .n_ports        = 2,
 313};
 314
 315/****************************************************************************
 316 * General Setup
 317 */
 318static unsigned int dns323a_mpp_modes[] __initdata = {
 319        MPP0_PCIE_RST_OUTn,
 320        MPP1_GPIO,              /* right amber LED (sata ch0) */
 321        MPP2_GPIO,              /* left amber LED (sata ch1) */
 322        MPP3_UNUSED,
 323        MPP4_GPIO,              /* power button LED */
 324        MPP5_GPIO,              /* power button LED */
 325        MPP6_GPIO,              /* GMT G751-2f overtemp */
 326        MPP7_GPIO,              /* M41T80 nIRQ/OUT/SQW */
 327        MPP8_GPIO,              /* triggers power off */
 328        MPP9_GPIO,              /* power button switch */
 329        MPP10_GPIO,             /* reset button switch */
 330        MPP11_UNUSED,
 331        MPP12_UNUSED,
 332        MPP13_UNUSED,
 333        MPP14_UNUSED,
 334        MPP15_UNUSED,
 335        MPP16_UNUSED,
 336        MPP17_UNUSED,
 337        MPP18_UNUSED,
 338        MPP19_UNUSED,
 339        0,
 340};
 341
 342static unsigned int dns323b_mpp_modes[] __initdata = {
 343        MPP0_UNUSED,
 344        MPP1_GPIO,              /* right amber LED (sata ch0) */
 345        MPP2_GPIO,              /* left amber LED (sata ch1) */
 346        MPP3_GPIO,              /* system up flag */
 347        MPP4_GPIO,              /* power button LED */
 348        MPP5_GPIO,              /* power button LED */
 349        MPP6_GPIO,              /* GMT G751-2f overtemp */
 350        MPP7_GPIO,              /* M41T80 nIRQ/OUT/SQW */
 351        MPP8_GPIO,              /* triggers power off */
 352        MPP9_GPIO,              /* power button switch */
 353        MPP10_GPIO,             /* reset button switch */
 354        MPP11_UNUSED,
 355        MPP12_SATA_LED,
 356        MPP13_SATA_LED,
 357        MPP14_SATA_LED,
 358        MPP15_SATA_LED,
 359        MPP16_UNUSED,
 360        MPP17_UNUSED,
 361        MPP18_UNUSED,
 362        MPP19_UNUSED,
 363        0,
 364};
 365
 366static unsigned int dns323c_mpp_modes[] __initdata = {
 367        MPP0_GPIO,              /* ? input */
 368        MPP1_GPIO,              /* input power switch (0 = pressed) */
 369        MPP2_GPIO,              /* output power off */
 370        MPP3_UNUSED,            /* ? output */
 371        MPP4_UNUSED,            /* ? output */
 372        MPP5_UNUSED,            /* ? output */
 373        MPP6_UNUSED,            /* ? output */
 374        MPP7_UNUSED,            /* ? output */
 375        MPP8_GPIO,              /* i/o right amber LED */
 376        MPP9_GPIO,              /* i/o left amber LED */
 377        MPP10_GPIO,             /* input */
 378        MPP11_UNUSED,
 379        MPP12_SATA_LED,
 380        MPP13_SATA_LED,
 381        MPP14_SATA_LED,
 382        MPP15_SATA_LED,
 383        MPP16_UNUSED,
 384        MPP17_GPIO,             /* power button LED */
 385        MPP18_GPIO,             /* fan speed bit 0 */
 386        MPP19_GPIO,             /* fan speed bit 1 */
 387        0,
 388};
 389
 390/* Rev C1 Fan speed notes:
 391 *
 392 * The fan is controlled by 2 GPIOs on this board. The settings
 393 * of the bits is as follow:
 394 *
 395 *  GPIO 18    GPIO 19    Fan
 396 *
 397 *    0          0        stopped
 398 *    0          1        low speed
 399 *    1          0        high speed
 400 *    1          1        don't do that (*)
 401 *
 402 * (*) I think the two bits control two feed-in resistors into a fixed
 403 *     PWN circuit, setting both bits will basically go a 'bit' faster
 404 *     than high speed, but d-link doesn't do it and you may get out of
 405 *     HW spec so don't do it.
 406 */
 407
 408/*
 409 * On the DNS-323 A1 and B1 the following devices are attached via I2C:
 410 *
 411 *  i2c addr | chip        | description
 412 *  0x3e     | GMT G760Af  | fan speed PWM controller
 413 *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
 414 *  0x68     | ST M41T80   | RTC w/ alarm
 415 */
 416static struct i2c_board_info __initdata dns323ab_i2c_devices[] = {
 417        {
 418                I2C_BOARD_INFO("g760a", 0x3e),
 419        }, {
 420                I2C_BOARD_INFO("lm75", 0x48),
 421        }, {
 422                I2C_BOARD_INFO("m41t80", 0x68),
 423        },
 424};
 425
 426/*
 427 * On the DNS-323 C1 the following devices are attached via I2C:
 428 *
 429 *  i2c addr | chip        | description
 430 *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
 431 *  0x68     | ST M41T80   | RTC w/ alarm
 432 */
 433static struct i2c_board_info __initdata dns323c_i2c_devices[] = {
 434        {
 435                I2C_BOARD_INFO("lm75", 0x48),
 436        }, {
 437                I2C_BOARD_INFO("m41t80", 0x68),
 438        },
 439};
 440
 441/* DNS-323 rev. A specific power off method */
 442static void dns323a_power_off(void)
 443{
 444        pr_info("DNS-323: Triggering power-off...\n");
 445        gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
 446}
 447
 448/* DNS-323 rev B specific power off method */
 449static void dns323b_power_off(void)
 450{
 451        pr_info("DNS-323: Triggering power-off...\n");
 452        /* Pin has to be changed to 1 and back to 0 to do actual power off. */
 453        gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
 454        mdelay(100);
 455        gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
 456}
 457
 458/* DNS-323 rev. C specific power off method */
 459static void dns323c_power_off(void)
 460{
 461        pr_info("DNS-323: Triggering power-off...\n");
 462        gpio_set_value(DNS323C_GPIO_POWER_OFF, 1);
 463}
 464
 465static int dns323c_phy_fixup(struct phy_device *phy)
 466{
 467        phy->dev_flags |= MARVELL_PHY_M1118_DNS323_LEDS;
 468
 469        return 0;
 470}
 471
 472static int __init dns323_identify_rev(void)
 473{
 474        u32 dev, rev, i, reg;
 475
 476        pr_debug("DNS-323: Identifying board ... \n");
 477
 478        /* Rev A1 has a 5181 */
 479        orion5x_pcie_id(&dev, &rev);
 480        if (dev == MV88F5181_DEV_ID) {
 481                pr_debug("DNS-323: 5181 found, board is A1\n");
 482                return DNS323_REV_A1;
 483        }
 484        pr_debug("DNS-323: 5182 found, board is B1 or C1, checking PHY...\n");
 485
 486        /* Rev B1 and C1 both have 5182, let's poke at the eth PHY. This is
 487         * a bit gross but we want to do that without links into the eth
 488         * driver so let's poke at it directly. We default to rev B1 in
 489         * case the accesses fail
 490         */
 491
 492#define ETH_SMI_REG             (ORION5X_ETH_VIRT_BASE + 0x2000 + 0x004)
 493#define  SMI_BUSY               0x10000000
 494#define  SMI_READ_VALID         0x08000000
 495#define  SMI_OPCODE_READ        0x04000000
 496#define  SMI_OPCODE_WRITE       0x00000000
 497
 498        for (i = 0; i < 1000; i++) {
 499                reg = readl(ETH_SMI_REG);
 500                if (!(reg & SMI_BUSY))
 501                        break;
 502        }
 503        if (i >= 1000) {
 504                pr_warn("DNS-323: Timeout accessing PHY, assuming rev B1\n");
 505                return DNS323_REV_B1;
 506        }
 507        writel((3 << 21)        /* phy ID reg */ |
 508               (8 << 16)        /* phy addr */ |
 509               SMI_OPCODE_READ, ETH_SMI_REG);
 510        for (i = 0; i < 1000; i++) {
 511                reg = readl(ETH_SMI_REG);
 512                if (reg & SMI_READ_VALID)
 513                        break;
 514        }
 515        if (i >= 1000) {
 516                pr_warn("DNS-323: Timeout reading PHY, assuming rev B1\n");
 517                return DNS323_REV_B1;
 518        }
 519        pr_debug("DNS-323: Ethernet PHY ID 0x%x\n", reg & 0xffff);
 520
 521        /* Note: the Marvell tools mask the ID with 0x3f0 before comparison
 522         * but I don't see that making a difference here, at least with
 523         * any known Marvell PHY ID
 524         */
 525        switch(reg & 0xfff0) {
 526        case 0x0cc0: /* MV88E1111 */
 527                return DNS323_REV_B1;
 528        case 0x0e10: /* MV88E1118 */
 529                return DNS323_REV_C1;
 530        default:
 531                pr_warn("DNS-323: Unknown PHY ID 0x%04x, assuming rev B1\n",
 532                        reg & 0xffff);
 533        }
 534        return DNS323_REV_B1;
 535}
 536
 537static void __init dns323_init(void)
 538{
 539        /* Setup basic Orion functions. Need to be called early. */
 540        orion5x_init();
 541
 542        /* Identify revision */
 543        system_rev = dns323_identify_rev();
 544        pr_info("DNS-323: Identified HW revision %c1\n", 'A' + system_rev);
 545
 546        /* Just to be tricky, the 5182 has a completely different
 547         * set of MPP modes to the 5181.
 548         */
 549        switch(system_rev) {
 550        case DNS323_REV_A1:
 551                orion5x_mpp_conf(dns323a_mpp_modes);
 552                writel(0, MPP_DEV_CTRL);                /* DEV_D[31:16] */
 553                break;
 554        case DNS323_REV_B1:
 555                orion5x_mpp_conf(dns323b_mpp_modes);
 556                break;
 557        case DNS323_REV_C1:
 558                orion5x_mpp_conf(dns323c_mpp_modes);
 559                break;
 560        }
 561
 562        /* setup flash mapping
 563         * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
 564         */
 565        mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
 566                                    ORION_MBUS_DEVBUS_BOOT_ATTR,
 567                                    DNS323_NOR_BOOT_BASE,
 568                                    DNS323_NOR_BOOT_SIZE);
 569        platform_device_register(&dns323_nor_flash);
 570
 571        /* Sort out LEDs, Buttons and i2c devices */
 572        switch(system_rev) {
 573        case DNS323_REV_A1:
 574                /* The 5181 power LED is active low and requires
 575                 * DNS323_GPIO_LED_POWER1 to also be low.
 576                 */
 577                 dns323ab_leds[0].active_low = 1;
 578                 gpio_request(DNS323_GPIO_LED_POWER1, "Power Led Enable");
 579                 gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
 580                /* Fall through */
 581        case DNS323_REV_B1:
 582                i2c_register_board_info(0, dns323ab_i2c_devices,
 583                                ARRAY_SIZE(dns323ab_i2c_devices));
 584                break;
 585        case DNS323_REV_C1:
 586                /* Hookup LEDs & Buttons */
 587                dns323_gpio_leds.dev.platform_data = &dns323c_led_data;
 588                dns323_button_device.dev.platform_data = &dns323c_button_data;
 589
 590                /* Hookup i2c devices and fan driver */
 591                i2c_register_board_info(0, dns323c_i2c_devices,
 592                                ARRAY_SIZE(dns323c_i2c_devices));
 593                platform_device_register_simple("dns323c-fan", 0, NULL, 0);
 594
 595                /* Register fixup for the PHY LEDs */
 596                if (!IS_BUILTIN(CONFIG_PHYLIB))
 597                        break;
 598                phy_register_fixup_for_uid(MARVELL_PHY_ID_88E1118,
 599                                           MARVELL_PHY_ID_MASK,
 600                                           dns323c_phy_fixup);
 601        }
 602
 603        platform_device_register(&dns323_gpio_leds);
 604        platform_device_register(&dns323_button_device);
 605
 606        /*
 607         * Configure peripherals.
 608         */
 609        if (dns323_read_mac_addr() < 0)
 610                printk("DNS-323: Failed to read MAC address\n");
 611        orion5x_ehci0_init();
 612        orion5x_eth_init(&dns323_eth_data);
 613        orion5x_i2c_init();
 614        orion5x_uart0_init();
 615
 616        /* Remaining GPIOs */
 617        switch(system_rev) {
 618        case DNS323_REV_A1:
 619                /* Poweroff GPIO */
 620                if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
 621                    gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
 622                        pr_err("DNS-323: failed to setup power-off GPIO\n");
 623                pm_power_off = dns323a_power_off;
 624                break;
 625        case DNS323_REV_B1:
 626                /* 5182 built-in SATA init */
 627                orion5x_sata_init(&dns323_sata_data);
 628
 629                /* The DNS323 rev B1 has flag to indicate the system is up.
 630                 * Without this flag set, power LED will flash and cannot be
 631                 * controlled via leds-gpio.
 632                 */
 633                if (gpio_request(DNS323_GPIO_SYSTEM_UP, "SYS_READY") == 0)
 634                        gpio_direction_output(DNS323_GPIO_SYSTEM_UP, 1);
 635
 636                /* Poweroff GPIO */
 637                if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
 638                    gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
 639                        pr_err("DNS-323: failed to setup power-off GPIO\n");
 640                pm_power_off = dns323b_power_off;
 641                break;
 642        case DNS323_REV_C1:
 643                /* 5182 built-in SATA init */
 644                orion5x_sata_init(&dns323_sata_data);
 645
 646                /* Poweroff GPIO */
 647                if (gpio_request(DNS323C_GPIO_POWER_OFF, "POWEROFF") != 0 ||
 648                    gpio_direction_output(DNS323C_GPIO_POWER_OFF, 0) != 0)
 649                        pr_err("DNS-323: failed to setup power-off GPIO\n");
 650                pm_power_off = dns323c_power_off;
 651
 652                /* Now, -this- should theorically be done by the sata_mv driver
 653                 * once I figure out what's going on there. Maybe the behaviour
 654                 * of the LEDs should be somewhat passed via the platform_data.
 655                 * for now, just whack the register and make the LEDs happy
 656                 *
 657                 * Note: AFAIK, rev B1 needs the same treatement but I'll let
 658                 * somebody else test it.
 659                 */
 660                writel(0x5, ORION5X_SATA_VIRT_BASE + 0x2c);
 661                break;
 662        }
 663}
 664
 665/* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
 666MACHINE_START(DNS323, "D-Link DNS-323")
 667        /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 668        .atag_offset    = 0x100,
 669        .nr_irqs        = ORION5X_NR_IRQS,
 670        .init_machine   = dns323_init,
 671        .map_io         = orion5x_map_io,
 672        .init_early     = orion5x_init_early,
 673        .init_irq       = orion5x_init_irq,
 674        .init_time      = orion5x_timer_init,
 675        .fixup          = tag_fixup_mem32,
 676        .restart        = orion5x_restart,
 677MACHINE_END
 678