tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Soekris board support code
3 *
4 * Copyright (C) 2008-2009 Tower Technologies
5 * Written by Alessandro Zummo <a.zummo@towertech.it>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2
9 * as published by the Free Software Foundation.
10 */
11
12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/io.h>
15#include <linux/string.h>
16#include <linux/leds.h>
17#include <linux/platform_device.h>
18#include <linux/gpio.h>
19
20#include <asm/geode.h>
21
22static const struct gpio_led net5501_leds[] = {
23 {
24 .name = "error",
25 .gpio = 6,
26 .default_trigger = "default-on",
27 },
28};
29
30static struct gpio_led_platform_data net5501_leds_data = {
31 .num_leds = ARRAY_SIZE(net5501_leds),
32 .leds = net5501_leds,
33};
34
35static struct platform_device net5501_leds_dev = {
36 .name = "leds-gpio",
37 .id = -1,
38 .dev.platform_data = &net5501_leds_data,
39};
40
41static void __init init_net5501(void)
42{
43 platform_device_register(&net5501_leds_dev);
44}
45
46struct soekris_board {
47 u16 offset;
48 char *sig;
49 u8 len;
50 void (*init)(void);
51};
52
53static struct soekris_board __initdata boards[] = {
54 { 0xb7b, "net5501", 7, init_net5501 }, /* net5501 v1.33/1.33c */
55 { 0xb1f, "net5501", 7, init_net5501 }, /* net5501 v1.32i */
56};
57
58static int __init soekris_init(void)
59{
60 int i;
61 unsigned char *rombase, *bios;
62
63 if (!is_geode())
64 return 0;
65
66 rombase = ioremap(0xffff0000, 0xffff);
67 if (!rombase) {
68 printk(KERN_INFO "Soekris net5501 LED driver failed to get rombase");
69 return 0;
70 }
71
72 bios = rombase + 0x20; /* null terminated */
73
74 if (strncmp(bios, "comBIOS", 7))
75 goto unmap;
76
77 for (i = 0; i < ARRAY_SIZE(boards); i++) {
78 unsigned char *model = rombase + boards[i].offset;
79
80 if (strncmp(model, boards[i].sig, boards[i].len) == 0) {
81 printk(KERN_INFO "Soekris %s: %s\n", model, bios);
82
83 if (boards[i].init)
84 boards[i].init();
85 break;
86 }
87 }
88
89unmap:
90 iounmap(rombase);
91 return 0;
92}
93
94arch_initcall(soekris_init);
95
96MODULE_LICENSE("GPL");