2 * arch/arm/mach-orion5x/dns323-setup.c
4 * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
6 * Support for HW Rev C1:
8 * Copyright (C) 2010 Benjamin Herrenschmidt <benh@kernel.crashing.org>
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.
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>
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
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
62 /* Exposed to userspace, do not change */
64 DNS323_REV_A1
, /* 0 */
65 DNS323_REV_B1
, /* 1 */
66 DNS323_REV_C1
, /* 2 */
70 /****************************************************************************
74 static int __init
dns323_pci_map_irq(const struct pci_dev
*dev
, u8 slot
, u8 pin
)
79 * Check for devices with hard-wired IRQs.
81 irq
= orion5x_pci_map_irq(dev
, slot
, pin
);
88 static struct hw_pci dns323_pci __initdata
= {
90 .setup
= orion5x_pci_sys_setup
,
91 .scan
= orion5x_pci_sys_scan_bus
,
92 .map_irq
= dns323_pci_map_irq
,
95 static int __init
dns323_pci_init(void)
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.
100 if (machine_is_dns323() && system_rev
== DNS323_REV_A1
)
101 pci_common_init(&dns323_pci
);
106 subsys_initcall(dns323_pci_init
);
108 /****************************************************************************
109 * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
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"
119 #define DNS323_NOR_BOOT_BASE 0xf4000000
120 #define DNS323_NOR_BOOT_SIZE SZ_8M
122 static struct mtd_partition dns323_partitions
[] = {
130 .offset
= 0x00010000,
132 .name
= "Linux Kernel",
134 .offset
= 0x00020000,
136 .name
= "File System",
138 .offset
= 0x001A0000,
142 .offset
= 0x007d0000,
146 static struct physmap_flash_data dns323_nor_flash_data
= {
148 .parts
= dns323_partitions
,
149 .nr_parts
= ARRAY_SIZE(dns323_partitions
)
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,
158 static struct platform_device dns323_nor_flash
= {
159 .name
= "physmap-flash",
162 .platform_data
= &dns323_nor_flash_data
,
164 .resource
= &dns323_nor_flash_resource
,
168 /****************************************************************************
172 static struct mv643xx_eth_platform_data dns323_eth_data
= {
173 .phy_addr
= MV643XX_ETH_PHY_ADDR(8),
176 /* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these
177 * functions be kept somewhere?
179 static int __init
dns323_parse_hex_nibble(char n
)
181 if (n
>= '0' && n
<= '9')
184 if (n
>= 'A' && n
<= 'F')
187 if (n
>= 'a' && n
<= 'f')
193 static int __init
dns323_parse_hex_byte(const char *b
)
198 hi
= dns323_parse_hex_nibble(b
[0]);
199 lo
= dns323_parse_hex_nibble(b
[1]);
201 if (hi
< 0 || lo
< 0)
204 return (hi
<< 4) | lo
;
207 static int __init
dns323_read_mac_addr(void)
213 /* MAC address is stored as a regular ol' string in /dev/mtdblock4
214 * (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
216 mac_page
= ioremap(DNS323_NOR_BOOT_BASE
+ 0x7d0000 + 196480, 1024);
220 /* Sanity check the string we're looking at */
221 for (i
= 0; i
< 5; i
++) {
222 if (*(mac_page
+ (i
* 3) + 2) != ':') {
227 for (i
= 0; i
< 6; i
++) {
230 byte
= dns323_parse_hex_byte(mac_page
+ (i
* 3));
239 printk("DNS-323: Found ethernet MAC address: %pM\n", addr
);
241 memcpy(dns323_eth_data
.mac_addr
, addr
, 6);
250 /****************************************************************************
251 * GPIO LEDs (simple - doesn't use hardware blinking support)
254 static struct gpio_led dns323ab_leds
[] = {
256 .name
= "power:blue",
257 .gpio
= DNS323_GPIO_LED_POWER2
,
258 .default_trigger
= "default-on",
260 .name
= "right:amber",
261 .gpio
= DNS323_GPIO_LED_RIGHT_AMBER
,
264 .name
= "left:amber",
265 .gpio
= DNS323_GPIO_LED_LEFT_AMBER
,
271 static struct gpio_led dns323c_leds
[] = {
273 .name
= "power:blue",
274 .gpio
= DNS323C_GPIO_LED_POWER
,
275 .default_trigger
= "timer",
278 .name
= "right:amber",
279 .gpio
= DNS323C_GPIO_LED_RIGHT_AMBER
,
282 .name
= "left:amber",
283 .gpio
= DNS323C_GPIO_LED_LEFT_AMBER
,
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
,
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
,
301 static struct platform_device dns323_gpio_leds
= {
305 .platform_data
= &dns323ab_led_data
,
309 /****************************************************************************
313 static struct gpio_keys_button dns323ab_buttons
[] = {
316 .gpio
= DNS323_GPIO_KEY_RESET
,
317 .desc
= "Reset Button",
321 .gpio
= DNS323_GPIO_KEY_POWER
,
322 .desc
= "Power Button",
327 static struct gpio_keys_platform_data dns323ab_button_data
= {
328 .buttons
= dns323ab_buttons
,
329 .nbuttons
= ARRAY_SIZE(dns323ab_buttons
),
332 static struct gpio_keys_button dns323c_buttons
[] = {
335 .gpio
= DNS323C_GPIO_KEY_POWER
,
336 .desc
= "Power Button",
341 static struct gpio_keys_platform_data dns323c_button_data
= {
342 .buttons
= dns323c_buttons
,
343 .nbuttons
= ARRAY_SIZE(dns323c_buttons
),
346 static struct platform_device dns323_button_device
= {
351 .platform_data
= &dns323ab_button_data
,
355 /*****************************************************************************
358 static struct mv_sata_platform_data dns323_sata_data
= {
362 /****************************************************************************
365 static unsigned int dns323a_mpp_modes
[] __initdata
= {
367 MPP1_GPIO
, /* right amber LED (sata ch0) */
368 MPP2_GPIO
, /* left amber LED (sata ch1) */
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 */
389 static unsigned int dns323b_mpp_modes
[] __initdata
= {
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 */
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 */
431 MPP17_GPIO
, /* power button LED */
432 MPP18_GPIO
, /* fan speed bit 0 */
433 MPP19_GPIO
, /* fan speed bit 1 */
437 /* Rev C1 Fan speed notes:
439 * The fan is controlled by 2 GPIOs on this board. The settings
440 * of the bits is as follow:
442 * GPIO 18 GPIO 19 Fan
447 * 1 1 don't do that (*)
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.
456 * On the DNS-323 A1 and B1 the following devices are attached via I2C:
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
463 static struct i2c_board_info __initdata dns323ab_i2c_devices
[] = {
465 I2C_BOARD_INFO("g760a", 0x3e),
467 I2C_BOARD_INFO("lm75", 0x48),
469 I2C_BOARD_INFO("m41t80", 0x68),
474 * On the DNS-323 C1 the following devices are attached via I2C:
476 * i2c addr | chip | description
477 * 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
478 * 0x68 | ST M41T80 | RTC w/ alarm
480 static struct i2c_board_info __initdata dns323c_i2c_devices
[] = {
482 I2C_BOARD_INFO("lm75", 0x48),
484 I2C_BOARD_INFO("m41t80", 0x68),
488 /* DNS-323 rev. A specific power off method */
489 static void dns323a_power_off(void)
491 pr_info("DNS-323: Triggering power-off...\n");
492 gpio_set_value(DNS323_GPIO_POWER_OFF
, 1);
495 /* DNS-323 rev B specific power off method */
496 static void dns323b_power_off(void)
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);
502 gpio_set_value(DNS323_GPIO_POWER_OFF
, 0);
505 /* DNS-323 rev. C specific power off method */
506 static void dns323c_power_off(void)
508 pr_info("DNS-323: Triggering power-off...\n");
509 gpio_set_value(DNS323C_GPIO_POWER_OFF
, 1);
512 static int dns323c_phy_fixup(struct phy_device
*phy
)
514 phy
->dev_flags
|= MARVELL_PHY_M1118_DNS323_LEDS
;
519 static int __init
dns323_identify_rev(void)
521 u32 dev
, rev
, i
, reg
;
523 pr_debug("DNS-323: Identifying board ... \n");
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
;
531 pr_debug("DNS-323: 5182 found, board is B1 or C1, checking PHY...\n");
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
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
545 for (i
= 0; i
< 1000; i
++) {
546 reg
= readl(ETH_SMI_REG
);
547 if (!(reg
& SMI_BUSY
))
551 pr_warn("DNS-323: Timeout accessing PHY, assuming rev B1\n");
552 return DNS323_REV_B1
;
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
)
563 pr_warn("DNS-323: Timeout reading PHY, assuming rev B1\n");
564 return DNS323_REV_B1
;
566 pr_debug("DNS-323: Ethernet PHY ID 0x%x\n", reg
& 0xffff);
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
572 switch(reg
& 0xfff0) {
573 case 0x0cc0: /* MV88E1111 */
574 return DNS323_REV_B1
;
575 case 0x0e10: /* MV88E1118 */
576 return DNS323_REV_C1
;
578 pr_warn("DNS-323: Unknown PHY ID 0x%04x, assuming rev B1\n",
581 return DNS323_REV_B1
;
584 static void __init
dns323_init(void)
586 /* Setup basic Orion functions. Need to be called early. */
589 /* Identify revision */
590 system_rev
= dns323_identify_rev();
591 pr_info("DNS-323: Identified HW revision %c1\n", 'A' + system_rev
);
593 /* Just to be tricky, the 5182 has a completely different
594 * set of MPP modes to the 5181.
598 orion5x_mpp_conf(dns323a_mpp_modes
);
599 writel(0, MPP_DEV_CTRL
); /* DEV_D[31:16] */
602 orion5x_mpp_conf(dns323b_mpp_modes
);
605 orion5x_mpp_conf(dns323c_mpp_modes
);
609 /* setup flash mapping
610 * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
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
);
618 /* Sort out LEDs, Buttons and i2c devices */
621 /* The 5181 power LED is active low and requires
622 * DNS323_GPIO_LED_POWER1 to also be low.
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);
629 i2c_register_board_info(0, dns323ab_i2c_devices
,
630 ARRAY_SIZE(dns323ab_i2c_devices
));
633 /* Hookup LEDs & Buttons */
634 dns323_gpio_leds
.dev
.platform_data
= &dns323c_led_data
;
635 dns323_button_device
.dev
.platform_data
= &dns323c_button_data
;
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);
642 /* Register fixup for the PHY LEDs */
643 if (!IS_BUILTIN(CONFIG_PHYLIB
))
645 phy_register_fixup_for_uid(MARVELL_PHY_ID_88E1118
,
650 platform_device_register(&dns323_gpio_leds
);
651 platform_device_register(&dns323_button_device
);
654 * Configure peripherals.
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
);
661 orion5x_uart0_init();
663 /* Remaining GPIOs */
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
;
673 /* 5182 built-in SATA init */
674 orion5x_sata_init(&dns323_sata_data
);
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.
680 if (gpio_request(DNS323_GPIO_SYSTEM_UP
, "SYS_READY") == 0)
681 gpio_direction_output(DNS323_GPIO_SYSTEM_UP
, 1);
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
;
690 /* 5182 built-in SATA init */
691 orion5x_sata_init(&dns323_sata_data
);
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
;
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
704 * Note: AFAIK, rev B1 needs the same treatement but I'll let
705 * somebody else test it.
707 writel(0x5, ORION5X_SATA_VIRT_BASE
+ 0x2c);
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
,