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: ");
240 for (i = 0; i < 6; i++)
241 printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n");
243 memcpy(dns323_eth_data.mac_addr, addr, 6);
252 /****************************************************************************
253 * GPIO LEDs (simple - doesn't use hardware blinking support)
256 static struct gpio_led dns323ab_leds[] = {
258 .name = "power:blue",
259 .gpio = DNS323_GPIO_LED_POWER2,
260 .default_trigger = "default-on",
262 .name = "right:amber",
263 .gpio = DNS323_GPIO_LED_RIGHT_AMBER,
266 .name = "left:amber",
267 .gpio = DNS323_GPIO_LED_LEFT_AMBER,
273 static struct gpio_led dns323c_leds[] = {
275 .name = "power:blue",
276 .gpio = DNS323C_GPIO_LED_POWER,
277 .default_trigger = "timer",
280 .name = "right:amber",
281 .gpio = DNS323C_GPIO_LED_RIGHT_AMBER,
284 .name = "left:amber",
285 .gpio = DNS323C_GPIO_LED_LEFT_AMBER,
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,
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,
303 static struct platform_device dns323_gpio_leds = {
307 .platform_data = &dns323ab_led_data,
311 /****************************************************************************
315 static struct gpio_keys_button dns323ab_buttons[] = {
318 .gpio = DNS323_GPIO_KEY_RESET,
319 .desc = "Reset Button",
323 .gpio = DNS323_GPIO_KEY_POWER,
324 .desc = "Power Button",
329 static struct gpio_keys_platform_data dns323ab_button_data = {
330 .buttons = dns323ab_buttons,
331 .nbuttons = ARRAY_SIZE(dns323ab_buttons),
334 static struct gpio_keys_button dns323c_buttons[] = {
337 .gpio = DNS323C_GPIO_KEY_POWER,
338 .desc = "Power Button",
343 static struct gpio_keys_platform_data dns323c_button_data = {
344 .buttons = dns323c_buttons,
345 .nbuttons = ARRAY_SIZE(dns323c_buttons),
348 static struct platform_device dns323_button_device = {
353 .platform_data = &dns323ab_button_data,
357 /*****************************************************************************
360 static struct mv_sata_platform_data dns323_sata_data = {
364 /****************************************************************************
367 static unsigned int dns323a_mpp_modes[] __initdata = {
369 MPP1_GPIO, /* right amber LED (sata ch0) */
370 MPP2_GPIO, /* left amber LED (sata ch1) */
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 */
391 static unsigned int dns323b_mpp_modes[] __initdata = {
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 */
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 */
433 MPP17_GPIO, /* power button LED */
434 MPP18_GPIO, /* fan speed bit 0 */
435 MPP19_GPIO, /* fan speed bit 1 */
439 /* Rev C1 Fan speed notes:
441 * The fan is controlled by 2 GPIOs on this board. The settings
442 * of the bits is as follow:
444 * GPIO 18 GPIO 19 Fan
449 * 1 1 don't do that (*)
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.
458 * On the DNS-323 A1 and B1 the following devices are attached via I2C:
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
465 static struct i2c_board_info __initdata dns323ab_i2c_devices[] = {
467 I2C_BOARD_INFO("g760a", 0x3e),
469 I2C_BOARD_INFO("lm75", 0x48),
471 I2C_BOARD_INFO("m41t80", 0x68),
476 * On the DNS-323 C1 the following devices are attached via I2C:
478 * i2c addr | chip | description
479 * 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
480 * 0x68 | ST M41T80 | RTC w/ alarm
482 static struct i2c_board_info __initdata dns323c_i2c_devices[] = {
484 I2C_BOARD_INFO("lm75", 0x48),
486 I2C_BOARD_INFO("m41t80", 0x68),
490 /* DNS-323 rev. A specific power off method */
491 static void dns323a_power_off(void)
493 pr_info("DNS-323: Triggering power-off...\n");
494 gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
497 /* DNS-323 rev B specific power off method */
498 static void dns323b_power_off(void)
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);
504 gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
507 /* DNS-323 rev. C specific power off method */
508 static void dns323c_power_off(void)
510 pr_info("DNS-323: Triggering power-off...\n");
511 gpio_set_value(DNS323C_GPIO_POWER_OFF, 1);
514 static int dns323c_phy_fixup(struct phy_device *phy)
516 phy->dev_flags |= MARVELL_PHY_M1118_DNS323_LEDS;
521 static int __init dns323_identify_rev(void)
523 u32 dev, rev, i, reg;
525 pr_debug("DNS-323: Identifying board ... \n");
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;
533 pr_debug("DNS-323: 5182 found, board is B1 or C1, checking PHY...\n");
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
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
547 for (i = 0; i < 1000; i++) {
548 reg = readl(ETH_SMI_REG);
549 if (!(reg & SMI_BUSY))
553 pr_warn("DNS-323: Timeout accessing PHY, assuming rev B1\n");
554 return DNS323_REV_B1;
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)
565 pr_warn("DNS-323: Timeout reading PHY, assuming rev B1\n");
566 return DNS323_REV_B1;
568 pr_debug("DNS-323: Ethernet PHY ID 0x%x\n", reg & 0xffff);
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
574 switch(reg & 0xfff0) {
575 case 0x0cc0: /* MV88E1111 */
576 return DNS323_REV_B1;
577 case 0x0e10: /* MV88E1118 */
578 return DNS323_REV_C1;
580 pr_warn("DNS-323: Unknown PHY ID 0x%04x, assuming rev B1\n",
583 return DNS323_REV_B1;
586 static void __init dns323_init(void)
588 /* Setup basic Orion functions. Need to be called early. */
591 /* Identify revision */
592 system_rev = dns323_identify_rev();
593 pr_info("DNS-323: Identified HW revision %c1\n", 'A' + system_rev);
595 /* Just to be tricky, the 5182 has a completely different
596 * set of MPP modes to the 5181.
600 orion5x_mpp_conf(dns323a_mpp_modes);
601 writel(0, MPP_DEV_CTRL); /* DEV_D[31:16] */
604 orion5x_mpp_conf(dns323b_mpp_modes);
607 orion5x_mpp_conf(dns323c_mpp_modes);
611 /* setup flash mapping
612 * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
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);
620 /* Sort out LEDs, Buttons and i2c devices */
623 /* The 5181 power LED is active low and requires
624 * DNS323_GPIO_LED_POWER1 to also be low.
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);
631 i2c_register_board_info(0, dns323ab_i2c_devices,
632 ARRAY_SIZE(dns323ab_i2c_devices));
635 /* Hookup LEDs & Buttons */
636 dns323_gpio_leds.dev.platform_data = &dns323c_led_data;
637 dns323_button_device.dev.platform_data = &dns323c_button_data;
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);
644 /* Register fixup for the PHY LEDs */
645 if (!IS_BUILTIN(CONFIG_PHYLIB))
647 phy_register_fixup_for_uid(MARVELL_PHY_ID_88E1118,
652 platform_device_register(&dns323_gpio_leds);
653 platform_device_register(&dns323_button_device);
656 * Configure peripherals.
658 if (dns323_read_mac_addr() < 0)
659 printk("DNS-323: Failed to read MAC address\n");
660 orion5x_ehci0_init();
661 orion5x_eth_init(&dns323_eth_data);
663 orion5x_uart0_init();
665 /* Remaining GPIOs */
669 if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
670 gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
671 pr_err("DNS-323: failed to setup power-off GPIO\n");
672 pm_power_off = dns323a_power_off;
675 /* 5182 built-in SATA init */
676 orion5x_sata_init(&dns323_sata_data);
678 /* The DNS323 rev B1 has flag to indicate the system is up.
679 * Without this flag set, power LED will flash and cannot be
680 * controlled via leds-gpio.
682 if (gpio_request(DNS323_GPIO_SYSTEM_UP, "SYS_READY") == 0)
683 gpio_direction_output(DNS323_GPIO_SYSTEM_UP, 1);
686 if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
687 gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
688 pr_err("DNS-323: failed to setup power-off GPIO\n");
689 pm_power_off = dns323b_power_off;
692 /* 5182 built-in SATA init */
693 orion5x_sata_init(&dns323_sata_data);
696 if (gpio_request(DNS323C_GPIO_POWER_OFF, "POWEROFF") != 0 ||
697 gpio_direction_output(DNS323C_GPIO_POWER_OFF, 0) != 0)
698 pr_err("DNS-323: failed to setup power-off GPIO\n");
699 pm_power_off = dns323c_power_off;
701 /* Now, -this- should theorically be done by the sata_mv driver
702 * once I figure out what's going on there. Maybe the behaviour
703 * of the LEDs should be somewhat passed via the platform_data.
704 * for now, just whack the register and make the LEDs happy
706 * Note: AFAIK, rev B1 needs the same treatement but I'll let
707 * somebody else test it.
709 writel(0x5, ORION5X_SATA_VIRT_BASE + 0x2c);
714 /* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
715 MACHINE_START(DNS323, "D-Link DNS-323")
716 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
717 .atag_offset = 0x100,
718 .init_machine = dns323_init,
719 .map_io = orion5x_map_io,
720 .init_early = orion5x_init_early,
721 .init_irq = orion5x_init_irq,
722 .init_time = orion5x_timer_init,
723 .fixup = tag_fixup_mem32,
724 .restart = orion5x_restart,