1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * arch/arm/mach-orion5x/board-d2net.c
4 *
5 * LaCie d2Network and Big Disk Network NAS setup
6 *
7 * Copyright (C) 2009 Simon Guinot <sguinot@lacie.com>
8 */
9
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/platform_device.h>
13#include <linux/pci.h>
14#include <linux/irq.h>
15#include <linux/leds.h>
16#include <linux/gpio.h>
17#include <asm/mach-types.h>
18#include <asm/mach/arch.h>
19#include <asm/mach/pci.h>
20#include <plat/orion-gpio.h>
21#include "common.h"
22#include "orion5x.h"
23
24/*****************************************************************************
25 * LaCie d2 Network Info
26 ****************************************************************************/
27
28/*****************************************************************************
29 * GPIO LED's
30 ****************************************************************************/
31
32/*
33 * The blue front LED is wired to the CPLD and can blink in relation with the
34 * SATA activity.
35 *
36 * The following array detail the different LED registers and the combination
37 * of their possible values:
38 *
39 * led_off   | blink_ctrl | SATA active | LED state
40 *           |            |             |
41 *    1      |     x      |      x      |  off
42 *    0      |     0      |      0      |  off
43 *    0      |     1      |      0      |  blink (rate 300ms)
44 *    0      |     x      |      1      |  on
45 *
46 * Notes: The blue and the red front LED's can't be on at the same time.
47 *        Red LED have priority.
48 */
49
50#define D2NET_GPIO_RED_LED		6
51#define D2NET_GPIO_BLUE_LED_BLINK_CTRL	16
52#define D2NET_GPIO_BLUE_LED_OFF		23
53
54static struct gpio_led d2net_leds[] = {
55	{
56		.name = "d2net:blue:sata",
57		.default_trigger = "default-on",
58		.gpio = D2NET_GPIO_BLUE_LED_OFF,
59		.active_low = 1,
60	},
61	{
62		.name = "d2net:red:fail",
63		.gpio = D2NET_GPIO_RED_LED,
64	},
65};
66
67static struct gpio_led_platform_data d2net_led_data = {
68	.num_leds = ARRAY_SIZE(d2net_leds),
69	.leds = d2net_leds,
70};
71
72static struct platform_device d2net_gpio_leds = {
73	.name           = "leds-gpio",
74	.id             = -1,
75	.dev            = {
76		.platform_data  = &d2net_led_data,
77	},
78};
79
80static void __init d2net_gpio_leds_init(void)
81{
82	int err;
83
84	/* Configure register blink_ctrl to allow SATA activity LED blinking. */
85	err = gpio_request(D2NET_GPIO_BLUE_LED_BLINK_CTRL, "blue LED blink");
86	if (err == 0) {
87		err = gpio_direction_output(D2NET_GPIO_BLUE_LED_BLINK_CTRL, 1);
88		if (err)
89			gpio_free(D2NET_GPIO_BLUE_LED_BLINK_CTRL);
90	}
91	if (err)
92		pr_err("d2net: failed to configure blue LED blink GPIO\n");
93
94	platform_device_register(&d2net_gpio_leds);
95}
96
97/*****************************************************************************
98 * General Setup
99 ****************************************************************************/
100
101void __init d2net_init(void)
102{
103	d2net_gpio_leds_init();
104
105	pr_notice("d2net: Flash write are not yet supported.\n");
106}
107