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// SPDX-License-Identifier: GPL-2.0-only
/*
* arch/arm/mach-orion5x/board-d2net.c
*
* LaCie d2Network and Big Disk Network NAS setup
*
* Copyright (C) 2009 Simon Guinot <sguinot@lacie.com>
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/irq.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include <plat/orion-gpio.h>
#include "common.h"
#include "orion5x.h"
/*****************************************************************************
* LaCie d2 Network Info
****************************************************************************/
/*****************************************************************************
* GPIO LED's
****************************************************************************/
/*
* The blue front LED is wired to the CPLD and can blink in relation with the
* SATA activity.
*
* The following array detail the different LED registers and the combination
* of their possible values:
*
* led_off | blink_ctrl | SATA active | LED state
* | | |
* 1 | x | x | off
* 0 | 0 | 0 | off
* 0 | 1 | 0 | blink (rate 300ms)
* 0 | x | 1 | on
*
* Notes: The blue and the red front LED's can't be on at the same time.
* Red LED have priority.
*/
#define D2NET_GPIO_RED_LED 6
#define D2NET_GPIO_BLUE_LED_BLINK_CTRL 16
#define D2NET_GPIO_BLUE_LED_OFF 23
static struct gpio_led d2net_leds[] = {
{
.name = "d2net:blue:sata",
.default_trigger = "default-on",
},
{
.name = "d2net:red:fail",
},
};
static struct gpio_led_platform_data d2net_led_data = {
.num_leds = ARRAY_SIZE(d2net_leds),
.leds = d2net_leds,
};
static struct platform_device d2net_gpio_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &d2net_led_data,
},
};
static struct gpiod_lookup_table d2net_leds_gpio_table = {
.dev_id = "leds-gpio",
.table = {
GPIO_LOOKUP_IDX("orion_gpio0", D2NET_GPIO_BLUE_LED_OFF, NULL,
0, GPIO_ACTIVE_LOW),
GPIO_LOOKUP_IDX("orion_gpio0", D2NET_GPIO_RED_LED, NULL,
1, GPIO_ACTIVE_HIGH),
{ },
},
};
static void __init d2net_gpio_leds_init(void)
{
int err;
/* Configure register blink_ctrl to allow SATA activity LED blinking. */
err = gpio_request(D2NET_GPIO_BLUE_LED_BLINK_CTRL, "blue LED blink");
if (err == 0) {
err = gpio_direction_output(D2NET_GPIO_BLUE_LED_BLINK_CTRL, 1);
if (err)
gpio_free(D2NET_GPIO_BLUE_LED_BLINK_CTRL);
}
if (err)
pr_err("d2net: failed to configure blue LED blink GPIO\n");
gpiod_add_lookup_table(&d2net_leds_gpio_table);
platform_device_register(&d2net_gpio_leds);
}
/*****************************************************************************
* General Setup
****************************************************************************/
void __init d2net_init(void)
{
d2net_gpio_leds_init();
pr_notice("d2net: Flash write are not yet supported.\n");
}
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