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Thomas Gleixnerd2912cb2019-06-04 10:11:33 +02001// SPDX-License-Identifier: GPL-2.0-only
Philip A. Prindeville31970592012-01-14 01:45:39 -07002/*
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
Philip A. Prindeville31970592012-01-14 01:45:39 -070013 */
14
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/io.h>
18#include <linux/string.h>
Philip A. Prindeville31970592012-01-14 01:45:39 -070019#include <linux/leds.h>
20#include <linux/platform_device.h>
21#include <linux/gpio.h>
22#include <linux/input.h>
23#include <linux/gpio_keys.h>
24#include <linux/dmi.h>
25
26#include <asm/geode.h>
27
28static struct gpio_keys_button geos_gpio_buttons[] = {
29 {
30 .code = KEY_RESTART,
31 .gpio = 3,
32 .active_low = 1,
33 .desc = "Reset button",
34 .type = EV_KEY,
35 .wakeup = 0,
36 .debounce_interval = 100,
37 .can_disable = 0,
38 }
39};
40static struct gpio_keys_platform_data geos_buttons_data = {
41 .buttons = geos_gpio_buttons,
42 .nbuttons = ARRAY_SIZE(geos_gpio_buttons),
43 .poll_interval = 20,
44};
45
46static struct platform_device geos_buttons_dev = {
47 .name = "gpio-keys-polled",
48 .id = 1,
49 .dev = {
50 .platform_data = &geos_buttons_data,
51 }
52};
53
54static struct gpio_led geos_leds[] = {
55 {
56 .name = "geos:1",
57 .gpio = 6,
58 .default_trigger = "default-on",
59 .active_low = 1,
60 },
61 {
62 .name = "geos:2",
63 .gpio = 25,
64 .default_trigger = "default-off",
65 .active_low = 1,
66 },
67 {
68 .name = "geos:3",
69 .gpio = 27,
70 .default_trigger = "default-off",
71 .active_low = 1,
72 },
73};
74
75static struct gpio_led_platform_data geos_leds_data = {
76 .num_leds = ARRAY_SIZE(geos_leds),
77 .leds = geos_leds,
78};
79
80static struct platform_device geos_leds_dev = {
81 .name = "leds-gpio",
82 .id = -1,
83 .dev.platform_data = &geos_leds_data,
84};
85
Bartlomiej Zolnierkiewicza6d30e02013-09-30 15:21:15 +020086static struct platform_device *geos_devs[] __initdata = {
Philip A. Prindeville31970592012-01-14 01:45:39 -070087 &geos_buttons_dev,
88 &geos_leds_dev,
89};
90
91static void __init register_geos(void)
92{
93 /* Setup LED control through leds-gpio driver */
94 platform_add_devices(geos_devs, ARRAY_SIZE(geos_devs));
95}
96
97static int __init geos_init(void)
98{
99 const char *vendor, *product;
100
101 if (!is_geode())
102 return 0;
103
104 vendor = dmi_get_system_info(DMI_SYS_VENDOR);
105 if (!vendor || strcmp(vendor, "Traverse Technologies"))
106 return 0;
107
108 product = dmi_get_system_info(DMI_PRODUCT_NAME);
109 if (!product || strcmp(product, "Geos"))
110 return 0;
111
112 printk(KERN_INFO "%s: system is recognized as \"%s %s\"\n",
113 KBUILD_MODNAME, vendor, product);
114
115 register_geos();
116
117 return 0;
118}
Paul Gortmakereb61aee2016-02-14 18:09:54 -0500119device_initcall(geos_init);