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 <plat/orion-gpio.h>
24 #include "common.h"
25 #include "orion5x.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
57 static 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
70 static struct gpio_led_platform_data d2net_led_data = {
71 .num_leds = ARRAY_SIZE(d2net_leds),
72 .leds = d2net_leds,
73 };
74
75 static struct platform_device d2net_gpio_leds = {
76 .name = "leds-gpio",
77 .id = -1,
78 .dev = {
79 .platform_data = &d2net_led_data,
80 },
81 };
82
83 static 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
104 void __init d2net_init(void)
105 {
106 d2net_gpio_leds_init();
107
108 pr_notice("d2net: Flash write are not yet supported.\n");
109 }