1/*
2 * arch/arm/mach-orion5x/board-d2net.c
3 *
4 * LaCie d2Network and Big Disk Network NAS setup
5 *
6 * Copyright (C) 2009 Simon Guinot <sguinot@lacie.com>
7 *
8 * This file is licensed under the terms of the GNU General Public
9 * License version 2. This program is licensed "as is" without any
10 * warranty of any kind, whether express or implied.
11 */
12
13#include <linux/kernel.h>
14#include <linux/init.h>
15#include <linux/platform_device.h>
16#include <linux/pci.h>
17#include <linux/irq.h>
18#include <linux/leds.h>
19#include <linux/gpio.h>
20#include <asm/mach-types.h>
21#include <asm/mach/arch.h>
22#include <asm/mach/pci.h>
23#include <mach/orion5x.h>
24#include <plat/orion-gpio.h>
25#include "common.h"
26
27/*****************************************************************************
28 * LaCie d2 Network Info
29 ****************************************************************************/
30
31/*****************************************************************************
32 * GPIO LED's
33 ****************************************************************************/
34
35/*
36 * The blue front LED is wired to the CPLD and can blink in relation with the
37 * SATA activity.
38 *
39 * The following array detail the different LED registers and the combination
40 * of their possible values:
41 *
42 * led_off   | blink_ctrl | SATA active | LED state
43 *           |            |             |
44 *    1      |     x      |      x      |  off
45 *    0      |     0      |      0      |  off
46 *    0      |     1      |      0      |  blink (rate 300ms)
47 *    0      |     x      |      1      |  on
48 *
49 * Notes: The blue and the red front LED's can't be on at the same time.
50 *        Red LED have priority.
51 */
52
53#define D2NET_GPIO_RED_LED		6
54#define D2NET_GPIO_BLUE_LED_BLINK_CTRL	16
55#define D2NET_GPIO_BLUE_LED_OFF		23
56
57static struct gpio_led d2net_leds[] = {
58	{
59		.name = "d2net:blue:sata",
60		.default_trigger = "default-on",
61		.gpio = D2NET_GPIO_BLUE_LED_OFF,
62		.active_low = 1,
63	},
64	{
65		.name = "d2net:red:fail",
66		.gpio = D2NET_GPIO_RED_LED,
67	},
68};
69
70static struct gpio_led_platform_data d2net_led_data = {
71	.num_leds = ARRAY_SIZE(d2net_leds),
72	.leds = d2net_leds,
73};
74
75static struct platform_device d2net_gpio_leds = {
76	.name           = "leds-gpio",
77	.id             = -1,
78	.dev            = {
79		.platform_data  = &d2net_led_data,
80	},
81};
82
83static void __init d2net_gpio_leds_init(void)
84{
85	int err;
86
87	/* Configure register blink_ctrl to allow SATA activity LED blinking. */
88	err = gpio_request(D2NET_GPIO_BLUE_LED_BLINK_CTRL, "blue LED blink");
89	if (err == 0) {
90		err = gpio_direction_output(D2NET_GPIO_BLUE_LED_BLINK_CTRL, 1);
91		if (err)
92			gpio_free(D2NET_GPIO_BLUE_LED_BLINK_CTRL);
93	}
94	if (err)
95		pr_err("d2net: failed to configure blue LED blink GPIO\n");
96
97	platform_device_register(&d2net_gpio_leds);
98}
99
100/*****************************************************************************
101 * General Setup
102 ****************************************************************************/
103
104void __init d2net_init(void)
105{
106	d2net_gpio_leds_init();
107
108	pr_notice("d2net: Flash write are not yet supported.\n");
109}
110