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TOMOYO Linux Cross Reference
Linux/arch/arm/mach-orion5x/dns323-setup.c

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  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 <mach/orion5x.h>
 37 #include <plat/orion-gpio.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 /* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these
177  * functions be kept somewhere?
178  */
179 static int __init dns323_parse_hex_nibble(char n)
180 {
181         if (n >= '' && n <= '9')
182                 return n - '';
183 
184         if (n >= 'A' && n <= 'F')
185                 return n - 'A' + 10;
186 
187         if (n >= 'a' && n <= 'f')
188                 return n - 'a' + 10;
189 
190         return -1;
191 }
192 
193 static int __init dns323_parse_hex_byte(const char *b)
194 {
195         int hi;
196         int lo;
197 
198         hi = dns323_parse_hex_nibble(b[0]);
199         lo = dns323_parse_hex_nibble(b[1]);
200 
201         if (hi < 0 || lo < 0)
202                 return -1;
203 
204         return (hi << 4) | lo;
205 }
206 
207 static int __init dns323_read_mac_addr(void)
208 {
209         u_int8_t addr[6];
210         int i;
211         char *mac_page;
212 
213         /* MAC address is stored as a regular ol' string in /dev/mtdblock4
214          * (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
215          */
216         mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
217         if (!mac_page)
218                 return -ENOMEM;
219 
220         /* Sanity check the string we're looking at */
221         for (i = 0; i < 5; i++) {
222                 if (*(mac_page + (i * 3) + 2) != ':') {
223                         goto error_fail;
224                 }
225         }
226 
227         for (i = 0; i < 6; i++) {
228                 int byte;
229 
230                 byte = dns323_parse_hex_byte(mac_page + (i * 3));
231                 if (byte < 0) {
232                         goto error_fail;
233                 }
234 
235                 addr[i] = byte;
236         }
237 
238         iounmap(mac_page);
239         printk("DNS-323: Found ethernet MAC address: ");
240         for (i = 0; i < 6; i++)
241                 printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n");
242 
243         memcpy(dns323_eth_data.mac_addr, addr, 6);
244 
245         return 0;
246 
247 error_fail:
248         iounmap(mac_page);
249         return -EINVAL;
250 }
251 
252 /****************************************************************************
253  * GPIO LEDs (simple - doesn't use hardware blinking support)
254  */
255 
256 static struct gpio_led dns323ab_leds[] = {
257         {
258                 .name = "power:blue",
259                 .gpio = DNS323_GPIO_LED_POWER2,
260                 .default_trigger = "default-on",
261         }, {
262                 .name = "right:amber",
263                 .gpio = DNS323_GPIO_LED_RIGHT_AMBER,
264                 .active_low = 1,
265         }, {
266                 .name = "left:amber",
267                 .gpio = DNS323_GPIO_LED_LEFT_AMBER,
268                 .active_low = 1,
269         },
270 };
271 
272 
273 static struct gpio_led dns323c_leds[] = {
274         {
275                 .name = "power:blue",
276                 .gpio = DNS323C_GPIO_LED_POWER,
277                 .default_trigger = "timer",
278                 .active_low = 1,
279         }, {
280                 .name = "right:amber",
281                 .gpio = DNS323C_GPIO_LED_RIGHT_AMBER,
282                 .active_low = 1,
283         }, {
284                 .name = "left:amber",
285                 .gpio = DNS323C_GPIO_LED_LEFT_AMBER,
286                 .active_low = 1,
287         },
288 };
289 
290 
291 static struct gpio_led_platform_data dns323ab_led_data = {
292         .num_leds       = ARRAY_SIZE(dns323ab_leds),
293         .leds           = dns323ab_leds,
294         .gpio_blink_set = orion_gpio_led_blink_set,
295 };
296 
297 static struct gpio_led_platform_data dns323c_led_data = {
298         .num_leds       = ARRAY_SIZE(dns323c_leds),
299         .leds           = dns323c_leds,
300         .gpio_blink_set = orion_gpio_led_blink_set,
301 };
302 
303 static struct platform_device dns323_gpio_leds = {
304         .name           = "leds-gpio",
305         .id             = -1,
306         .dev            = {
307                 .platform_data  = &dns323ab_led_data,
308         },
309 };
310 
311 /****************************************************************************
312  * GPIO Attached Keys
313  */
314 
315 static struct gpio_keys_button dns323ab_buttons[] = {
316         {
317                 .code           = KEY_RESTART,
318                 .gpio           = DNS323_GPIO_KEY_RESET,
319                 .desc           = "Reset Button",
320                 .active_low     = 1,
321         }, {
322                 .code           = KEY_POWER,
323                 .gpio           = DNS323_GPIO_KEY_POWER,
324                 .desc           = "Power Button",
325                 .active_low     = 1,
326         },
327 };
328 
329 static struct gpio_keys_platform_data dns323ab_button_data = {
330         .buttons        = dns323ab_buttons,
331         .nbuttons       = ARRAY_SIZE(dns323ab_buttons),
332 };
333 
334 static struct gpio_keys_button dns323c_buttons[] = {
335         {
336                 .code           = KEY_POWER,
337                 .gpio           = DNS323C_GPIO_KEY_POWER,
338                 .desc           = "Power Button",
339                 .active_low     = 1,
340         },
341 };
342 
343 static struct gpio_keys_platform_data dns323c_button_data = {
344         .buttons        = dns323c_buttons,
345         .nbuttons       = ARRAY_SIZE(dns323c_buttons),
346 };
347 
348 static struct platform_device dns323_button_device = {
349         .name           = "gpio-keys",
350         .id             = -1,
351         .num_resources  = 0,
352         .dev            = {
353                 .platform_data  = &dns323ab_button_data,
354         },
355 };
356 
357 /*****************************************************************************
358  * SATA
359  */
360 static struct mv_sata_platform_data dns323_sata_data = {
361        .n_ports        = 2,
362 };
363 
364 /****************************************************************************
365  * General Setup
366  */
367 static unsigned int dns323a_mpp_modes[] __initdata = {
368         MPP0_PCIE_RST_OUTn,
369         MPP1_GPIO,              /* right amber LED (sata ch0) */
370         MPP2_GPIO,              /* left amber LED (sata ch1) */
371         MPP3_UNUSED,
372         MPP4_GPIO,              /* power button LED */
373         MPP5_GPIO,              /* power button LED */
374         MPP6_GPIO,              /* GMT G751-2f overtemp */
375         MPP7_GPIO,              /* M41T80 nIRQ/OUT/SQW */
376         MPP8_GPIO,              /* triggers power off */
377         MPP9_GPIO,              /* power button switch */
378         MPP10_GPIO,             /* reset button switch */
379         MPP11_UNUSED,
380         MPP12_UNUSED,
381         MPP13_UNUSED,
382         MPP14_UNUSED,
383         MPP15_UNUSED,
384         MPP16_UNUSED,
385         MPP17_UNUSED,
386         MPP18_UNUSED,
387         MPP19_UNUSED,
388         0,
389 };
390 
391 static unsigned int dns323b_mpp_modes[] __initdata = {
392         MPP0_UNUSED,
393         MPP1_GPIO,              /* right amber LED (sata ch0) */
394         MPP2_GPIO,              /* left amber LED (sata ch1) */
395         MPP3_GPIO,              /* system up flag */
396         MPP4_GPIO,              /* power button LED */
397         MPP5_GPIO,              /* power button LED */
398         MPP6_GPIO,              /* GMT G751-2f overtemp */
399         MPP7_GPIO,              /* M41T80 nIRQ/OUT/SQW */
400         MPP8_GPIO,              /* triggers power off */
401         MPP9_GPIO,              /* power button switch */
402         MPP10_GPIO,             /* reset button switch */
403         MPP11_UNUSED,
404         MPP12_SATA_LED,
405         MPP13_SATA_LED,
406         MPP14_SATA_LED,
407         MPP15_SATA_LED,
408         MPP16_UNUSED,
409         MPP17_UNUSED,
410         MPP18_UNUSED,
411         MPP19_UNUSED,
412         0,
413 };
414 
415 static unsigned int dns323c_mpp_modes[] __initdata = {
416         MPP0_GPIO,              /* ? input */
417         MPP1_GPIO,              /* input power switch (0 = pressed) */
418         MPP2_GPIO,              /* output power off */
419         MPP3_UNUSED,            /* ? output */
420         MPP4_UNUSED,            /* ? output */
421         MPP5_UNUSED,            /* ? output */
422         MPP6_UNUSED,            /* ? output */
423         MPP7_UNUSED,            /* ? output */
424         MPP8_GPIO,              /* i/o right amber LED */
425         MPP9_GPIO,              /* i/o left amber LED */
426         MPP10_GPIO,             /* input */
427         MPP11_UNUSED,
428         MPP12_SATA_LED,
429         MPP13_SATA_LED,
430         MPP14_SATA_LED,
431         MPP15_SATA_LED,
432         MPP16_UNUSED,
433         MPP17_GPIO,             /* power button LED */
434         MPP18_GPIO,             /* fan speed bit 0 */
435         MPP19_GPIO,             /* fan speed bit 1 */
436         0,
437 };
438 
439 /* Rev C1 Fan speed notes:
440  *
441  * The fan is controlled by 2 GPIOs on this board. The settings
442  * of the bits is as follow:
443  *
444  *  GPIO 18    GPIO 19    Fan
445  *
446  *    0          0        stopped
447  *    0          1        low speed
448  *    1          0        high speed
449  *    1          1        don't do that (*)
450  *
451  * (*) I think the two bits control two feed-in resistors into a fixed
452  *     PWN circuit, setting both bits will basically go a 'bit' faster
453  *     than high speed, but d-link doesn't do it and you may get out of
454  *     HW spec so don't do it.
455  */
456 
457 /*
458  * On the DNS-323 A1 and B1 the following devices are attached via I2C:
459  *
460  *  i2c addr | chip        | description
461  *  0x3e     | GMT G760Af  | fan speed PWM controller
462  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
463  *  0x68     | ST M41T80   | RTC w/ alarm
464  */
465 static struct i2c_board_info __initdata dns323ab_i2c_devices[] = {
466         {
467                 I2C_BOARD_INFO("g760a", 0x3e),
468         }, {
469                 I2C_BOARD_INFO("lm75", 0x48),
470         }, {
471                 I2C_BOARD_INFO("m41t80", 0x68),
472         },
473 };
474 
475 /*
476  * On the DNS-323 C1 the following devices are attached via I2C:
477  *
478  *  i2c addr | chip        | description
479  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
480  *  0x68     | ST M41T80   | RTC w/ alarm
481  */
482 static struct i2c_board_info __initdata dns323c_i2c_devices[] = {
483         {
484                 I2C_BOARD_INFO("lm75", 0x48),
485         }, {
486                 I2C_BOARD_INFO("m41t80", 0x68),
487         },
488 };
489 
490 /* DNS-323 rev. A specific power off method */
491 static void dns323a_power_off(void)
492 {
493         pr_info("DNS-323: Triggering power-off...\n");
494         gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
495 }
496 
497 /* DNS-323 rev B specific power off method */
498 static void dns323b_power_off(void)
499 {
500         pr_info("DNS-323: Triggering power-off...\n");
501         /* Pin has to be changed to 1 and back to 0 to do actual power off. */
502         gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
503         mdelay(100);
504         gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
505 }
506 
507 /* DNS-323 rev. C specific power off method */
508 static void dns323c_power_off(void)
509 {
510         pr_info("DNS-323: Triggering power-off...\n");
511         gpio_set_value(DNS323C_GPIO_POWER_OFF, 1);
512 }
513 
514 static int dns323c_phy_fixup(struct phy_device *phy)
515 {
516         phy->dev_flags |= MARVELL_PHY_M1118_DNS323_LEDS;
517 
518         return 0;
519 }
520 
521 static int __init dns323_identify_rev(void)
522 {
523         u32 dev, rev, i, reg;
524 
525         pr_debug("DNS-323: Identifying board ... \n");
526 
527         /* Rev A1 has a 5181 */
528         orion5x_pcie_id(&dev, &rev);
529         if (dev == MV88F5181_DEV_ID) {
530                 pr_debug("DNS-323: 5181 found, board is A1\n");
531                 return DNS323_REV_A1;
532         }
533         pr_debug("DNS-323: 5182 found, board is B1 or C1, checking PHY...\n");
534 
535         /* Rev B1 and C1 both have 5182, let's poke at the eth PHY. This is
536          * a bit gross but we want to do that without links into the eth
537          * driver so let's poke at it directly. We default to rev B1 in
538          * case the accesses fail
539          */
540 
541 #define ETH_SMI_REG             (ORION5X_ETH_VIRT_BASE + 0x2000 + 0x004)
542 #define  SMI_BUSY               0x10000000
543 #define  SMI_READ_VALID         0x08000000
544 #define  SMI_OPCODE_READ        0x04000000
545 #define  SMI_OPCODE_WRITE       0x00000000
546 
547         for (i = 0; i < 1000; i++) {
548                 reg = readl(ETH_SMI_REG);
549                 if (!(reg & SMI_BUSY))
550                         break;
551         }
552         if (i >= 1000) {
553                 pr_warning("DNS-323: Timeout accessing PHY, assuming rev B1\n");
554                 return DNS323_REV_B1;
555         }
556         writel((3 << 21)        /* phy ID reg */ |
557                (8 << 16)        /* phy addr */ |
558                SMI_OPCODE_READ, ETH_SMI_REG);
559         for (i = 0; i < 1000; i++) {
560                 reg = readl(ETH_SMI_REG);
561                 if (reg & SMI_READ_VALID)
562                         break;
563         }
564         if (i >= 1000) {
565                 pr_warning("DNS-323: Timeout reading PHY, assuming rev B1\n");
566                 return DNS323_REV_B1;
567         }
568         pr_debug("DNS-323: Ethernet PHY ID 0x%x\n", reg & 0xffff);
569 
570         /* Note: the Marvell tools mask the ID with 0x3f0 before comparison
571          * but I don't see that making a difference here, at least with
572          * any known Marvell PHY ID
573          */
574         switch(reg & 0xfff0) {
575         case 0x0cc0: /* MV88E1111 */
576                 return DNS323_REV_B1;
577         case 0x0e10: /* MV88E1118 */
578                 return DNS323_REV_C1;
579         default:
580                 pr_warning("DNS-323: Unknown PHY ID 0x%04x, assuming rev B1\n",
581                            reg & 0xffff);
582         }
583         return DNS323_REV_B1;
584 }
585 
586 static void __init dns323_init(void)
587 {
588         /* Setup basic Orion functions. Need to be called early. */
589         orion5x_init();
590 
591         /* Identify revision */
592         system_rev = dns323_identify_rev();
593         pr_info("DNS-323: Identified HW revision %c1\n", 'A' + system_rev);
594 
595         /* Just to be tricky, the 5182 has a completely different
596          * set of MPP modes to the 5181.
597          */
598         switch(system_rev) {
599         case DNS323_REV_A1:
600                 orion5x_mpp_conf(dns323a_mpp_modes);
601                 writel(0, MPP_DEV_CTRL);                /* DEV_D[31:16] */
602                 break;
603         case DNS323_REV_B1:
604                 orion5x_mpp_conf(dns323b_mpp_modes);
605                 break;
606         case DNS323_REV_C1:
607                 orion5x_mpp_conf(dns323c_mpp_modes);
608                 break;
609         }
610 
611         /* setup flash mapping
612          * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
613          */
614         mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
615                                     ORION_MBUS_DEVBUS_BOOT_ATTR,
616                                     DNS323_NOR_BOOT_BASE,
617                                     DNS323_NOR_BOOT_SIZE);
618         platform_device_register(&dns323_nor_flash);
619 
620         /* Sort out LEDs, Buttons and i2c devices */
621         switch(system_rev) {
622         case DNS323_REV_A1:
623                 /* The 5181 power LED is active low and requires
624                  * DNS323_GPIO_LED_POWER1 to also be low.
625                  */
626                  dns323ab_leds[0].active_low = 1;
627                  gpio_request(DNS323_GPIO_LED_POWER1, "Power Led Enable");
628                  gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
629                 /* Fall through */
630         case DNS323_REV_B1:
631                 i2c_register_board_info(0, dns323ab_i2c_devices,
632                                 ARRAY_SIZE(dns323ab_i2c_devices));
633                 break;
634         case DNS323_REV_C1:
635                 /* Hookup LEDs & Buttons */
636                 dns323_gpio_leds.dev.platform_data = &dns323c_led_data;
637                 dns323_button_device.dev.platform_data = &dns323c_button_data;
638 
639                 /* Hookup i2c devices and fan driver */
640                 i2c_register_board_info(0, dns323c_i2c_devices,
641                                 ARRAY_SIZE(dns323c_i2c_devices));
642                 platform_device_register_simple("dns323c-fan", 0, NULL, 0);
643 
644                 /* Register fixup for the PHY LEDs */
645                 phy_register_fixup_for_uid(MARVELL_PHY_ID_88E1118,
646                                            MARVELL_PHY_ID_MASK,
647                                            dns323c_phy_fixup);
648         }
649 
650         platform_device_register(&dns323_gpio_leds);
651         platform_device_register(&dns323_button_device);
652 
653         /*
654          * Configure peripherals.
655          */
656         if (dns323_read_mac_addr() < 0)
657                 printk("DNS-323: Failed to read MAC address\n");
658         orion5x_ehci0_init();
659         orion5x_eth_init(&dns323_eth_data);
660         orion5x_i2c_init();
661         orion5x_uart0_init();
662 
663         /* Remaining GPIOs */
664         switch(system_rev) {
665         case DNS323_REV_A1:
666                 /* Poweroff GPIO */
667                 if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
668                     gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
669                         pr_err("DNS-323: failed to setup power-off GPIO\n");
670                 pm_power_off = dns323a_power_off;
671                 break;
672         case DNS323_REV_B1:
673                 /* 5182 built-in SATA init */
674                 orion5x_sata_init(&dns323_sata_data);
675 
676                 /* The DNS323 rev B1 has flag to indicate the system is up.
677                  * Without this flag set, power LED will flash and cannot be
678                  * controlled via leds-gpio.
679                  */
680                 if (gpio_request(DNS323_GPIO_SYSTEM_UP, "SYS_READY") == 0)
681                         gpio_direction_output(DNS323_GPIO_SYSTEM_UP, 1);
682 
683                 /* Poweroff GPIO */
684                 if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
685                     gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
686                         pr_err("DNS-323: failed to setup power-off GPIO\n");
687                 pm_power_off = dns323b_power_off;
688                 break;
689         case DNS323_REV_C1:
690                 /* 5182 built-in SATA init */
691                 orion5x_sata_init(&dns323_sata_data);
692 
693                 /* Poweroff GPIO */
694                 if (gpio_request(DNS323C_GPIO_POWER_OFF, "POWEROFF") != 0 ||
695                     gpio_direction_output(DNS323C_GPIO_POWER_OFF, 0) != 0)
696                         pr_err("DNS-323: failed to setup power-off GPIO\n");
697                 pm_power_off = dns323c_power_off;
698 
699                 /* Now, -this- should theorically be done by the sata_mv driver
700                  * once I figure out what's going on there. Maybe the behaviour
701                  * of the LEDs should be somewhat passed via the platform_data.
702                  * for now, just whack the register and make the LEDs happy
703                  *
704                  * Note: AFAIK, rev B1 needs the same treatement but I'll let
705                  * somebody else test it.
706                  */
707                 writel(0x5, ORION5X_SATA_VIRT_BASE + 0x2c);
708                 break;
709         }
710 }
711 
712 /* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
713 MACHINE_START(DNS323, "D-Link DNS-323")
714         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
715         .atag_offset    = 0x100,
716         .init_machine   = dns323_init,
717         .map_io         = orion5x_map_io,
718         .init_early     = orion5x_init_early,
719         .init_irq       = orion5x_init_irq,
720         .init_time      = orion5x_timer_init,
721         .fixup          = tag_fixup_mem32,
722         .restart        = orion5x_restart,
723 MACHINE_END
724 

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