110 lines
3 KiB
C
110 lines
3 KiB
C
/*
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* arch/arm/mach-orion5x/board-d2net.c
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*
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* LaCie d2Network and Big Disk Network NAS setup
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*
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* Copyright (C) 2009 Simon Guinot <sguinot@lacie.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/pci.h>
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#include <linux/irq.h>
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#include <linux/leds.h>
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#include <linux/gpio.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/pci.h>
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#include <plat/orion-gpio.h>
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#include "common.h"
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#include "orion5x.h"
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/*****************************************************************************
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* LaCie d2 Network Info
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****************************************************************************/
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/*****************************************************************************
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* GPIO LED's
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****************************************************************************/
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/*
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* The blue front LED is wired to the CPLD and can blink in relation with the
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* SATA activity.
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*
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* The following array detail the different LED registers and the combination
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* of their possible values:
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*
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* led_off | blink_ctrl | SATA active | LED state
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* | | |
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* 1 | x | x | off
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* 0 | 0 | 0 | off
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* 0 | 1 | 0 | blink (rate 300ms)
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* 0 | x | 1 | on
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*
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* Notes: The blue and the red front LED's can't be on at the same time.
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* Red LED have priority.
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*/
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#define D2NET_GPIO_RED_LED 6
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#define D2NET_GPIO_BLUE_LED_BLINK_CTRL 16
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#define D2NET_GPIO_BLUE_LED_OFF 23
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static struct gpio_led d2net_leds[] = {
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{
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.name = "d2net:blue:sata",
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.default_trigger = "default-on",
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.gpio = D2NET_GPIO_BLUE_LED_OFF,
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.active_low = 1,
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},
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{
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.name = "d2net:red:fail",
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.gpio = D2NET_GPIO_RED_LED,
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},
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};
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static struct gpio_led_platform_data d2net_led_data = {
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.num_leds = ARRAY_SIZE(d2net_leds),
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.leds = d2net_leds,
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};
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static struct platform_device d2net_gpio_leds = {
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.name = "leds-gpio",
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.id = -1,
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.dev = {
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.platform_data = &d2net_led_data,
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},
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};
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static void __init d2net_gpio_leds_init(void)
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{
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int err;
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/* Configure register blink_ctrl to allow SATA activity LED blinking. */
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err = gpio_request(D2NET_GPIO_BLUE_LED_BLINK_CTRL, "blue LED blink");
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if (err == 0) {
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err = gpio_direction_output(D2NET_GPIO_BLUE_LED_BLINK_CTRL, 1);
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if (err)
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gpio_free(D2NET_GPIO_BLUE_LED_BLINK_CTRL);
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}
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if (err)
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pr_err("d2net: failed to configure blue LED blink GPIO\n");
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platform_device_register(&d2net_gpio_leds);
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}
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/*****************************************************************************
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* General Setup
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****************************************************************************/
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void __init d2net_init(void)
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{
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d2net_gpio_leds_init();
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pr_notice("d2net: Flash write are not yet supported.\n");
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}
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