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 /* 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 >= '0' && n <= '9')
182 		return n - '0';
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: %pM\n", addr);
240 
241 	memcpy(dns323_eth_data.mac_addr, addr, 6);
242 
243 	return 0;
244 
245 error_fail:
246 	iounmap(mac_page);
247 	return -EINVAL;
248 }
249 
250 /****************************************************************************
251  * GPIO LEDs (simple - doesn't use hardware blinking support)
252  */
253 
254 static struct gpio_led dns323ab_leds[] = {
255 	{
256 		.name = "power:blue",
257 		.gpio = DNS323_GPIO_LED_POWER2,
258 		.default_trigger = "default-on",
259 	}, {
260 		.name = "right:amber",
261 		.gpio = DNS323_GPIO_LED_RIGHT_AMBER,
262 		.active_low = 1,
263 	}, {
264 		.name = "left:amber",
265 		.gpio = DNS323_GPIO_LED_LEFT_AMBER,
266 		.active_low = 1,
267 	},
268 };
269 
270 
271 static struct gpio_led dns323c_leds[] = {
272 	{
273 		.name = "power:blue",
274 		.gpio = DNS323C_GPIO_LED_POWER,
275 		.default_trigger = "timer",
276 		.active_low = 1,
277 	}, {
278 		.name = "right:amber",
279 		.gpio = DNS323C_GPIO_LED_RIGHT_AMBER,
280 		.active_low = 1,
281 	}, {
282 		.name = "left:amber",
283 		.gpio = DNS323C_GPIO_LED_LEFT_AMBER,
284 		.active_low = 1,
285 	},
286 };
287 
288 
289 static struct gpio_led_platform_data dns323ab_led_data = {
290 	.num_leds	= ARRAY_SIZE(dns323ab_leds),
291 	.leds		= dns323ab_leds,
292 	.gpio_blink_set = orion_gpio_led_blink_set,
293 };
294 
295 static struct gpio_led_platform_data dns323c_led_data = {
296 	.num_leds	= ARRAY_SIZE(dns323c_leds),
297 	.leds		= dns323c_leds,
298 	.gpio_blink_set = orion_gpio_led_blink_set,
299 };
300 
301 static struct platform_device dns323_gpio_leds = {
302 	.name		= "leds-gpio",
303 	.id		= -1,
304 	.dev		= {
305 		.platform_data	= &dns323ab_led_data,
306 	},
307 };
308 
309 /****************************************************************************
310  * GPIO Attached Keys
311  */
312 
313 static struct gpio_keys_button dns323ab_buttons[] = {
314 	{
315 		.code		= KEY_RESTART,
316 		.gpio		= DNS323_GPIO_KEY_RESET,
317 		.desc		= "Reset Button",
318 		.active_low	= 1,
319 	}, {
320 		.code		= KEY_POWER,
321 		.gpio		= DNS323_GPIO_KEY_POWER,
322 		.desc		= "Power Button",
323 		.active_low	= 1,
324 	},
325 };
326 
327 static struct gpio_keys_platform_data dns323ab_button_data = {
328 	.buttons	= dns323ab_buttons,
329 	.nbuttons	= ARRAY_SIZE(dns323ab_buttons),
330 };
331 
332 static struct gpio_keys_button dns323c_buttons[] = {
333 	{
334 		.code		= KEY_POWER,
335 		.gpio		= DNS323C_GPIO_KEY_POWER,
336 		.desc		= "Power Button",
337 		.active_low	= 1,
338 	},
339 };
340 
341 static struct gpio_keys_platform_data dns323c_button_data = {
342 	.buttons	= dns323c_buttons,
343 	.nbuttons	= ARRAY_SIZE(dns323c_buttons),
344 };
345 
346 static struct platform_device dns323_button_device = {
347 	.name		= "gpio-keys",
348 	.id		= -1,
349 	.num_resources	= 0,
350 	.dev		= {
351 		.platform_data	= &dns323ab_button_data,
352 	},
353 };
354 
355 /*****************************************************************************
356  * SATA
357  */
358 static struct mv_sata_platform_data dns323_sata_data = {
359        .n_ports        = 2,
360 };
361 
362 /****************************************************************************
363  * General Setup
364  */
365 static unsigned int dns323a_mpp_modes[] __initdata = {
366 	MPP0_PCIE_RST_OUTn,
367 	MPP1_GPIO,		/* right amber LED (sata ch0) */
368 	MPP2_GPIO,		/* left amber LED (sata ch1) */
369 	MPP3_UNUSED,
370 	MPP4_GPIO,		/* power button LED */
371 	MPP5_GPIO,		/* power button LED */
372 	MPP6_GPIO,		/* GMT G751-2f overtemp */
373 	MPP7_GPIO,		/* M41T80 nIRQ/OUT/SQW */
374 	MPP8_GPIO,		/* triggers power off */
375 	MPP9_GPIO,		/* power button switch */
376 	MPP10_GPIO,		/* reset button switch */
377 	MPP11_UNUSED,
378 	MPP12_UNUSED,
379 	MPP13_UNUSED,
380 	MPP14_UNUSED,
381 	MPP15_UNUSED,
382 	MPP16_UNUSED,
383 	MPP17_UNUSED,
384 	MPP18_UNUSED,
385 	MPP19_UNUSED,
386 	0,
387 };
388 
389 static unsigned int dns323b_mpp_modes[] __initdata = {
390 	MPP0_UNUSED,
391 	MPP1_GPIO,		/* right amber LED (sata ch0) */
392 	MPP2_GPIO,		/* left amber LED (sata ch1) */
393 	MPP3_GPIO,		/* system up flag */
394 	MPP4_GPIO,		/* power button LED */
395 	MPP5_GPIO,		/* power button LED */
396 	MPP6_GPIO,		/* GMT G751-2f overtemp */
397 	MPP7_GPIO,		/* M41T80 nIRQ/OUT/SQW */
398 	MPP8_GPIO,		/* triggers power off */
399 	MPP9_GPIO,		/* power button switch */
400 	MPP10_GPIO,		/* reset button switch */
401 	MPP11_UNUSED,
402 	MPP12_SATA_LED,
403 	MPP13_SATA_LED,
404 	MPP14_SATA_LED,
405 	MPP15_SATA_LED,
406 	MPP16_UNUSED,
407 	MPP17_UNUSED,
408 	MPP18_UNUSED,
409 	MPP19_UNUSED,
410 	0,
411 };
412 
413 static unsigned int dns323c_mpp_modes[] __initdata = {
414 	MPP0_GPIO,		/* ? input */
415 	MPP1_GPIO,		/* input power switch (0 = pressed) */
416 	MPP2_GPIO,		/* output power off */
417 	MPP3_UNUSED,		/* ? output */
418 	MPP4_UNUSED,		/* ? output */
419 	MPP5_UNUSED,		/* ? output */
420 	MPP6_UNUSED,		/* ? output */
421 	MPP7_UNUSED,		/* ? output */
422 	MPP8_GPIO,		/* i/o right amber LED */
423 	MPP9_GPIO,		/* i/o left amber LED */
424 	MPP10_GPIO,		/* input */
425 	MPP11_UNUSED,
426 	MPP12_SATA_LED,
427 	MPP13_SATA_LED,
428 	MPP14_SATA_LED,
429 	MPP15_SATA_LED,
430 	MPP16_UNUSED,
431 	MPP17_GPIO,		/* power button LED */
432 	MPP18_GPIO,		/* fan speed bit 0 */
433 	MPP19_GPIO,		/* fan speed bit 1 */
434 	0,
435 };
436 
437 /* Rev C1 Fan speed notes:
438  *
439  * The fan is controlled by 2 GPIOs on this board. The settings
440  * of the bits is as follow:
441  *
442  *  GPIO 18    GPIO 19    Fan
443  *
444  *    0          0        stopped
445  *    0          1        low speed
446  *    1          0        high speed
447  *    1          1        don't do that (*)
448  *
449  * (*) I think the two bits control two feed-in resistors into a fixed
450  *     PWN circuit, setting both bits will basically go a 'bit' faster
451  *     than high speed, but d-link doesn't do it and you may get out of
452  *     HW spec so don't do it.
453  */
454 
455 /*
456  * On the DNS-323 A1 and B1 the following devices are attached via I2C:
457  *
458  *  i2c addr | chip        | description
459  *  0x3e     | GMT G760Af  | fan speed PWM controller
460  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
461  *  0x68     | ST M41T80   | RTC w/ alarm
462  */
463 static struct i2c_board_info __initdata dns323ab_i2c_devices[] = {
464 	{
465 		I2C_BOARD_INFO("g760a", 0x3e),
466 	}, {
467 		I2C_BOARD_INFO("lm75", 0x48),
468 	}, {
469 		I2C_BOARD_INFO("m41t80", 0x68),
470 	},
471 };
472 
473 /*
474  * On the DNS-323 C1 the following devices are attached via I2C:
475  *
476  *  i2c addr | chip        | description
477  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
478  *  0x68     | ST M41T80   | RTC w/ alarm
479  */
480 static struct i2c_board_info __initdata dns323c_i2c_devices[] = {
481 	{
482 		I2C_BOARD_INFO("lm75", 0x48),
483 	}, {
484 		I2C_BOARD_INFO("m41t80", 0x68),
485 	},
486 };
487 
488 /* DNS-323 rev. A specific power off method */
489 static void dns323a_power_off(void)
490 {
491 	pr_info("DNS-323: Triggering power-off...\n");
492 	gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
493 }
494 
495 /* DNS-323 rev B specific power off method */
496 static void dns323b_power_off(void)
497 {
498 	pr_info("DNS-323: Triggering power-off...\n");
499 	/* Pin has to be changed to 1 and back to 0 to do actual power off. */
500 	gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
501 	mdelay(100);
502 	gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
503 }
504 
505 /* DNS-323 rev. C specific power off method */
506 static void dns323c_power_off(void)
507 {
508 	pr_info("DNS-323: Triggering power-off...\n");
509 	gpio_set_value(DNS323C_GPIO_POWER_OFF, 1);
510 }
511 
512 static int dns323c_phy_fixup(struct phy_device *phy)
513 {
514 	phy->dev_flags |= MARVELL_PHY_M1118_DNS323_LEDS;
515 
516 	return 0;
517 }
518 
519 static int __init dns323_identify_rev(void)
520 {
521 	u32 dev, rev, i, reg;
522 
523 	pr_debug("DNS-323: Identifying board ... \n");
524 
525 	/* Rev A1 has a 5181 */
526 	orion5x_pcie_id(&dev, &rev);
527 	if (dev == MV88F5181_DEV_ID) {
528 		pr_debug("DNS-323: 5181 found, board is A1\n");
529 		return DNS323_REV_A1;
530 	}
531 	pr_debug("DNS-323: 5182 found, board is B1 or C1, checking PHY...\n");
532 
533 	/* Rev B1 and C1 both have 5182, let's poke at the eth PHY. This is
534 	 * a bit gross but we want to do that without links into the eth
535 	 * driver so let's poke at it directly. We default to rev B1 in
536 	 * case the accesses fail
537 	 */
538 
539 #define ETH_SMI_REG		(ORION5X_ETH_VIRT_BASE + 0x2000 + 0x004)
540 #define  SMI_BUSY		0x10000000
541 #define  SMI_READ_VALID		0x08000000
542 #define  SMI_OPCODE_READ	0x04000000
543 #define  SMI_OPCODE_WRITE	0x00000000
544 
545 	for (i = 0; i < 1000; i++) {
546 		reg = readl(ETH_SMI_REG);
547 		if (!(reg & SMI_BUSY))
548 			break;
549 	}
550 	if (i >= 1000) {
551 		pr_warn("DNS-323: Timeout accessing PHY, assuming rev B1\n");
552 		return DNS323_REV_B1;
553 	}
554 	writel((3 << 21)	/* phy ID reg */ |
555 	       (8 << 16)	/* phy addr */ |
556 	       SMI_OPCODE_READ, ETH_SMI_REG);
557 	for (i = 0; i < 1000; i++) {
558 		reg = readl(ETH_SMI_REG);
559 		if (reg & SMI_READ_VALID)
560 			break;
561 	}
562 	if (i >= 1000) {
563 		pr_warn("DNS-323: Timeout reading PHY, assuming rev B1\n");
564 		return DNS323_REV_B1;
565 	}
566 	pr_debug("DNS-323: Ethernet PHY ID 0x%x\n", reg & 0xffff);
567 
568 	/* Note: the Marvell tools mask the ID with 0x3f0 before comparison
569 	 * but I don't see that making a difference here, at least with
570 	 * any known Marvell PHY ID
571 	 */
572 	switch(reg & 0xfff0) {
573 	case 0x0cc0: /* MV88E1111 */
574 		return DNS323_REV_B1;
575 	case 0x0e10: /* MV88E1118 */
576 		return DNS323_REV_C1;
577 	default:
578 		pr_warn("DNS-323: Unknown PHY ID 0x%04x, assuming rev B1\n",
579 			reg & 0xffff);
580 	}
581 	return DNS323_REV_B1;
582 }
583 
584 static void __init dns323_init(void)
585 {
586 	/* Setup basic Orion functions. Need to be called early. */
587 	orion5x_init();
588 
589 	/* Identify revision */
590 	system_rev = dns323_identify_rev();
591 	pr_info("DNS-323: Identified HW revision %c1\n", 'A' + system_rev);
592 
593 	/* Just to be tricky, the 5182 has a completely different
594 	 * set of MPP modes to the 5181.
595 	 */
596 	switch(system_rev) {
597 	case DNS323_REV_A1:
598 		orion5x_mpp_conf(dns323a_mpp_modes);
599 		writel(0, MPP_DEV_CTRL);		/* DEV_D[31:16] */
600 		break;
601 	case DNS323_REV_B1:
602 		orion5x_mpp_conf(dns323b_mpp_modes);
603 		break;
604 	case DNS323_REV_C1:
605 		orion5x_mpp_conf(dns323c_mpp_modes);
606 		break;
607 	}
608 
609 	/* setup flash mapping
610 	 * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
611 	 */
612 	mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
613 				    ORION_MBUS_DEVBUS_BOOT_ATTR,
614 				    DNS323_NOR_BOOT_BASE,
615 				    DNS323_NOR_BOOT_SIZE);
616 	platform_device_register(&dns323_nor_flash);
617 
618 	/* Sort out LEDs, Buttons and i2c devices */
619 	switch(system_rev) {
620 	case DNS323_REV_A1:
621 		/* The 5181 power LED is active low and requires
622 		 * DNS323_GPIO_LED_POWER1 to also be low.
623 		 */
624 		 dns323ab_leds[0].active_low = 1;
625 		 gpio_request(DNS323_GPIO_LED_POWER1, "Power Led Enable");
626 		 gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
627 		fallthrough;
628 	case DNS323_REV_B1:
629 		i2c_register_board_info(0, dns323ab_i2c_devices,
630 				ARRAY_SIZE(dns323ab_i2c_devices));
631 		break;
632 	case DNS323_REV_C1:
633 		/* Hookup LEDs & Buttons */
634 		dns323_gpio_leds.dev.platform_data = &dns323c_led_data;
635 		dns323_button_device.dev.platform_data = &dns323c_button_data;
636 
637 		/* Hookup i2c devices and fan driver */
638 		i2c_register_board_info(0, dns323c_i2c_devices,
639 				ARRAY_SIZE(dns323c_i2c_devices));
640 		platform_device_register_simple("dns323c-fan", 0, NULL, 0);
641 
642 		/* Register fixup for the PHY LEDs */
643 		if (!IS_BUILTIN(CONFIG_PHYLIB))
644 			break;
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 	.nr_irqs	= ORION5X_NR_IRQS,
717 	.init_machine	= dns323_init,
718 	.map_io		= orion5x_map_io,
719 	.init_early	= orion5x_init_early,
720 	.init_irq	= orion5x_init_irq,
721 	.init_time	= orion5x_timer_init,
722 	.fixup		= tag_fixup_mem32,
723 	.restart	= orion5x_restart,
724 MACHINE_END
725