mirror of https://gitee.com/openkylin/linux.git
97 lines
1.9 KiB
C
97 lines
1.9 KiB
C
/*
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* Soekris board support code
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*
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* Copyright (C) 2008-2009 Tower Technologies
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* Written by Alessandro Zummo <a.zummo@towertech.it>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/string.h>
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#include <linux/leds.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <asm/geode.h>
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static struct gpio_led net5501_leds[] = {
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{
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.name = "error",
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.gpio = 6,
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.default_trigger = "default-on",
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},
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};
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static struct gpio_led_platform_data net5501_leds_data = {
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.num_leds = ARRAY_SIZE(net5501_leds),
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.leds = net5501_leds,
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};
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static struct platform_device net5501_leds_dev = {
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.name = "leds-gpio",
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.id = -1,
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.dev.platform_data = &net5501_leds_data,
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};
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static void __init init_net5501(void)
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{
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platform_device_register(&net5501_leds_dev);
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}
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struct soekris_board {
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u16 offset;
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char *sig;
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u8 len;
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void (*init)(void);
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};
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static struct soekris_board __initdata boards[] = {
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{ 0xb7b, "net5501", 7, init_net5501 }, /* net5501 v1.33/1.33c */
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{ 0xb1f, "net5501", 7, init_net5501 }, /* net5501 v1.32i */
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};
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static int __init soekris_init(void)
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{
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int i;
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unsigned char *rombase, *bios;
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if (!is_geode())
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return 0;
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rombase = ioremap(0xffff0000, 0xffff);
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if (!rombase) {
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printk(KERN_INFO "Soekris net5501 LED driver failed to get rombase");
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return 0;
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}
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bios = rombase + 0x20; /* null terminated */
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if (strncmp(bios, "comBIOS", 7))
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goto unmap;
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for (i = 0; i < ARRAY_SIZE(boards); i++) {
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unsigned char *model = rombase + boards[i].offset;
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if (strncmp(model, boards[i].sig, boards[i].len) == 0) {
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printk(KERN_INFO "Soekris %s: %s\n", model, bios);
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if (boards[i].init)
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boards[i].init();
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break;
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}
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}
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unmap:
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iounmap(rombase);
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return 0;
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}
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arch_initcall(soekris_init);
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MODULE_LICENSE("GPL");
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