/* * 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/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; } device_initcall(geos_init);