129 lines
2.9 KiB
C
129 lines
2.9 KiB
C
/*
|
|
* System Specific setup for Traverse Technologies GEOS.
|
|
* At the moment this means setup of GPIO control of LEDs.
|
|
*
|
|
* Copyright (C) 2008 Constantin Baranov <const@mimas.ru>
|
|
* Copyright (C) 2011 Ed Wildgoose <kernel@wildgooses.com>
|
|
* and Philip Prindeville <philipp@redfish-solutions.com>
|
|
*
|
|
* TODO: There are large similarities with leds-net5501.c
|
|
* by Alessandro Zummo <a.zummo@towertech.it>
|
|
* In the future leds-net5501.c should be migrated over to platform
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/io.h>
|
|
#include <linux/string.h>
|
|
#include <linux/module.h>
|
|
#include <linux/leds.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/input.h>
|
|
#include <linux/gpio_keys.h>
|
|
#include <linux/dmi.h>
|
|
|
|
#include <asm/geode.h>
|
|
|
|
static struct gpio_keys_button geos_gpio_buttons[] = {
|
|
{
|
|
.code = KEY_RESTART,
|
|
.gpio = 3,
|
|
.active_low = 1,
|
|
.desc = "Reset button",
|
|
.type = EV_KEY,
|
|
.wakeup = 0,
|
|
.debounce_interval = 100,
|
|
.can_disable = 0,
|
|
}
|
|
};
|
|
static struct gpio_keys_platform_data geos_buttons_data = {
|
|
.buttons = geos_gpio_buttons,
|
|
.nbuttons = ARRAY_SIZE(geos_gpio_buttons),
|
|
.poll_interval = 20,
|
|
};
|
|
|
|
static struct platform_device geos_buttons_dev = {
|
|
.name = "gpio-keys-polled",
|
|
.id = 1,
|
|
.dev = {
|
|
.platform_data = &geos_buttons_data,
|
|
}
|
|
};
|
|
|
|
static struct gpio_led geos_leds[] = {
|
|
{
|
|
.name = "geos:1",
|
|
.gpio = 6,
|
|
.default_trigger = "default-on",
|
|
.active_low = 1,
|
|
},
|
|
{
|
|
.name = "geos:2",
|
|
.gpio = 25,
|
|
.default_trigger = "default-off",
|
|
.active_low = 1,
|
|
},
|
|
{
|
|
.name = "geos:3",
|
|
.gpio = 27,
|
|
.default_trigger = "default-off",
|
|
.active_low = 1,
|
|
},
|
|
};
|
|
|
|
static struct gpio_led_platform_data geos_leds_data = {
|
|
.num_leds = ARRAY_SIZE(geos_leds),
|
|
.leds = geos_leds,
|
|
};
|
|
|
|
static struct platform_device geos_leds_dev = {
|
|
.name = "leds-gpio",
|
|
.id = -1,
|
|
.dev.platform_data = &geos_leds_data,
|
|
};
|
|
|
|
static struct platform_device *geos_devs[] __initdata = {
|
|
&geos_buttons_dev,
|
|
&geos_leds_dev,
|
|
};
|
|
|
|
static void __init register_geos(void)
|
|
{
|
|
/* Setup LED control through leds-gpio driver */
|
|
platform_add_devices(geos_devs, ARRAY_SIZE(geos_devs));
|
|
}
|
|
|
|
static int __init geos_init(void)
|
|
{
|
|
const char *vendor, *product;
|
|
|
|
if (!is_geode())
|
|
return 0;
|
|
|
|
vendor = dmi_get_system_info(DMI_SYS_VENDOR);
|
|
if (!vendor || strcmp(vendor, "Traverse Technologies"))
|
|
return 0;
|
|
|
|
product = dmi_get_system_info(DMI_PRODUCT_NAME);
|
|
if (!product || strcmp(product, "Geos"))
|
|
return 0;
|
|
|
|
printk(KERN_INFO "%s: system is recognized as \"%s %s\"\n",
|
|
KBUILD_MODNAME, vendor, product);
|
|
|
|
register_geos();
|
|
|
|
return 0;
|
|
}
|
|
|
|
module_init(geos_init);
|
|
|
|
MODULE_AUTHOR("Philip Prindeville <philipp@redfish-solutions.com>");
|
|
MODULE_DESCRIPTION("Traverse Technologies Geos System Setup");
|
|
MODULE_LICENSE("GPL");
|