geos.c

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * System Specific setup for Traverse Technologies GEOS.
 4 * At the moment this means setup of GPIO control of LEDs.
 5 *
 6 * Copyright (C) 2008 Constantin Baranov <const@mimas.ru>
 7 * Copyright (C) 2011 Ed Wildgoose <kernel@wildgooses.com>
 8 *                and Philip Prindeville <philipp@redfish-solutions.com>
 9 *
10 * TODO: There are large similarities with leds-net5501.c
11 * by Alessandro Zummo <a.zummo@towertech.it>
12 * In the future leds-net5501.c should be migrated over to platform
13 */
14
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/io.h>
18#include <linux/string.h>
19#include <linux/dmi.h>
20
21#include <asm/geode.h>
22
23#include "geode-common.h"
24
25static const struct geode_led geos_leds[] __initconst = {
26	{ 6, true },
27	{ 25, false },
28	{ 27, false },
29};
30
31static void __init register_geos(void)
32{
33	geode_create_restart_key(3);
34	geode_create_leds("geos", geos_leds, ARRAY_SIZE(geos_leds));
35}
36
37static int __init geos_init(void)
38{
39	const char *vendor, *product;
40
41	if (!is_geode())
42		return 0;
43
44	vendor = dmi_get_system_info(DMI_SYS_VENDOR);
45	if (!vendor || strcmp(vendor, "Traverse Technologies"))
46		return 0;
47
48	product = dmi_get_system_info(DMI_PRODUCT_NAME);
49	if (!product || strcmp(product, "Geos"))
50		return 0;
51
52	printk(KERN_INFO "%s: system is recognized as \"%s %s\"\n",
53	       KBUILD_MODNAME, vendor, product);
54
55	register_geos();
56
57	return 0;
58}
59device_initcall(geos_init);