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 */
  63 enum {
  64         DNS323_REV_A1,  /* 0 */
  65         DNS323_REV_B1,  /* 1 */
  66         DNS323_REV_C1,  /* 2 */
  67 };
  68
  69
  70 /****************************************************************************
  71  * PCI setup
  72  */
  73
  74 static 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
  88 static 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
  95 static 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
 106 subsys_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
 122 static 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
 146 static struct physmap_flash_data dns323_nor_flash_data = {
 147         .width          = 1,
 148         .parts          = dns323_partitions,
 149         .nr_parts       = ARRAY_SIZE(dns323_partitions)
 150 };
 151
 152 static 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
 158 static 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
 172 static struct mv643xx_eth_platform_data dns323_eth_data = {
 173         .phy_addr = MV643XX_ETH_PHY_ADDR(8),
 174 };
 175
 176 static 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
 198 error_fail:
 199         iounmap(mac_page);
 200         return -EINVAL;
 201 }
 202
 203 /****************************************************************************
 204  * GPIO LEDs (simple - doesn't use hardware blinking support)
 205  */
 206
 207 static 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
 224 static 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
 242 static 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
 248 static 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
 254 static 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
 266 static 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
 280 static struct gpio_keys_platform_data dns323ab_button_data = {
 281         .buttons        = dns323ab_buttons,
 282         .nbuttons       = ARRAY_SIZE(dns323ab_buttons),
 283 };
 284
 285 static 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
 294 static struct gpio_keys_platform_data dns323c_button_data = {
 295         .buttons        = dns323c_buttons,
 296         .nbuttons       = ARRAY_SIZE(dns323c_buttons),
 297 };
 298
 299 static 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  */
 311 static struct mv_sata_platform_data dns323_sata_data = {
 312        .n_ports        = 2,
 313 };
 314
 315 /****************************************************************************
 316  * General Setup
 317  */
 318 static 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
 342 static 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
 366 static 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  */
 416 static 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  */
 433 static 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 */
 442 static 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 */
 449 static 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 */
 459 static 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
 465 static int dns323c_phy_fixup(struct phy_device *phy)
 466 {
 467         phy->dev_flags |= MARVELL_PHY_M1118_DNS323_LEDS;
 468
 469         return 0;
 470 }
 471
 472 static 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
 537 static 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 */
 666 MACHINE_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,
 677 MACHINE_END