1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * System Specific setup for Traverse Technologies GEOS.
4*4882a593Smuzhiyun * At the moment this means setup of GPIO control of LEDs.
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Copyright (C) 2008 Constantin Baranov <const@mimas.ru>
7*4882a593Smuzhiyun * Copyright (C) 2011 Ed Wildgoose <kernel@wildgooses.com>
8*4882a593Smuzhiyun * and Philip Prindeville <philipp@redfish-solutions.com>
9*4882a593Smuzhiyun *
10*4882a593Smuzhiyun * TODO: There are large similarities with leds-net5501.c
11*4882a593Smuzhiyun * by Alessandro Zummo <a.zummo@towertech.it>
12*4882a593Smuzhiyun * In the future leds-net5501.c should be migrated over to platform
13*4882a593Smuzhiyun */
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include <linux/kernel.h>
16*4882a593Smuzhiyun #include <linux/init.h>
17*4882a593Smuzhiyun #include <linux/io.h>
18*4882a593Smuzhiyun #include <linux/string.h>
19*4882a593Smuzhiyun #include <linux/leds.h>
20*4882a593Smuzhiyun #include <linux/platform_device.h>
21*4882a593Smuzhiyun #include <linux/input.h>
22*4882a593Smuzhiyun #include <linux/gpio_keys.h>
23*4882a593Smuzhiyun #include <linux/dmi.h>
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun #include <asm/geode.h>
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun static struct gpio_keys_button geos_gpio_buttons[] = {
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun .code = KEY_RESTART,
30*4882a593Smuzhiyun .gpio = 3,
31*4882a593Smuzhiyun .active_low = 1,
32*4882a593Smuzhiyun .desc = "Reset button",
33*4882a593Smuzhiyun .type = EV_KEY,
34*4882a593Smuzhiyun .wakeup = 0,
35*4882a593Smuzhiyun .debounce_interval = 100,
36*4882a593Smuzhiyun .can_disable = 0,
37*4882a593Smuzhiyun }
38*4882a593Smuzhiyun };
39*4882a593Smuzhiyun static struct gpio_keys_platform_data geos_buttons_data = {
40*4882a593Smuzhiyun .buttons = geos_gpio_buttons,
41*4882a593Smuzhiyun .nbuttons = ARRAY_SIZE(geos_gpio_buttons),
42*4882a593Smuzhiyun .poll_interval = 20,
43*4882a593Smuzhiyun };
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun static struct platform_device geos_buttons_dev = {
46*4882a593Smuzhiyun .name = "gpio-keys-polled",
47*4882a593Smuzhiyun .id = 1,
48*4882a593Smuzhiyun .dev = {
49*4882a593Smuzhiyun .platform_data = &geos_buttons_data,
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun };
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun static struct gpio_led geos_leds[] = {
54*4882a593Smuzhiyun {
55*4882a593Smuzhiyun .name = "geos:1",
56*4882a593Smuzhiyun .gpio = 6,
57*4882a593Smuzhiyun .default_trigger = "default-on",
58*4882a593Smuzhiyun .active_low = 1,
59*4882a593Smuzhiyun },
60*4882a593Smuzhiyun {
61*4882a593Smuzhiyun .name = "geos:2",
62*4882a593Smuzhiyun .gpio = 25,
63*4882a593Smuzhiyun .default_trigger = "default-off",
64*4882a593Smuzhiyun .active_low = 1,
65*4882a593Smuzhiyun },
66*4882a593Smuzhiyun {
67*4882a593Smuzhiyun .name = "geos:3",
68*4882a593Smuzhiyun .gpio = 27,
69*4882a593Smuzhiyun .default_trigger = "default-off",
70*4882a593Smuzhiyun .active_low = 1,
71*4882a593Smuzhiyun },
72*4882a593Smuzhiyun };
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun static struct gpio_led_platform_data geos_leds_data = {
75*4882a593Smuzhiyun .num_leds = ARRAY_SIZE(geos_leds),
76*4882a593Smuzhiyun .leds = geos_leds,
77*4882a593Smuzhiyun };
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun static struct platform_device geos_leds_dev = {
80*4882a593Smuzhiyun .name = "leds-gpio",
81*4882a593Smuzhiyun .id = -1,
82*4882a593Smuzhiyun .dev.platform_data = &geos_leds_data,
83*4882a593Smuzhiyun };
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun static struct platform_device *geos_devs[] __initdata = {
86*4882a593Smuzhiyun &geos_buttons_dev,
87*4882a593Smuzhiyun &geos_leds_dev,
88*4882a593Smuzhiyun };
89*4882a593Smuzhiyun
register_geos(void)90*4882a593Smuzhiyun static void __init register_geos(void)
91*4882a593Smuzhiyun {
92*4882a593Smuzhiyun /* Setup LED control through leds-gpio driver */
93*4882a593Smuzhiyun platform_add_devices(geos_devs, ARRAY_SIZE(geos_devs));
94*4882a593Smuzhiyun }
95*4882a593Smuzhiyun
geos_init(void)96*4882a593Smuzhiyun static int __init geos_init(void)
97*4882a593Smuzhiyun {
98*4882a593Smuzhiyun const char *vendor, *product;
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun if (!is_geode())
101*4882a593Smuzhiyun return 0;
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun vendor = dmi_get_system_info(DMI_SYS_VENDOR);
104*4882a593Smuzhiyun if (!vendor || strcmp(vendor, "Traverse Technologies"))
105*4882a593Smuzhiyun return 0;
106*4882a593Smuzhiyun
107*4882a593Smuzhiyun product = dmi_get_system_info(DMI_PRODUCT_NAME);
108*4882a593Smuzhiyun if (!product || strcmp(product, "Geos"))
109*4882a593Smuzhiyun return 0;
110*4882a593Smuzhiyun
111*4882a593Smuzhiyun printk(KERN_INFO "%s: system is recognized as \"%s %s\"\n",
112*4882a593Smuzhiyun KBUILD_MODNAME, vendor, product);
113*4882a593Smuzhiyun
114*4882a593Smuzhiyun register_geos();
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun return 0;
117*4882a593Smuzhiyun }
118*4882a593Smuzhiyun device_initcall(geos_init);
119