x86/geode/net5501: Add platform driver for Soekris Engineering net5501 (da4e3302) · Commits · 戴 / test

arch/x86/Kconfig

+6 −0

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		@@ -2114,6 +2114,12 @@ config ALIX

		Note: You have to set alix.force=1 for boards with Award BIOS.

		config NET5501
		bool "Soekris Engineering net5501 System Support (LEDS, GPIO, etc)"
		select GPIOLIB
		---help---
		This option enables system support for the Soekris Engineering net5501.

		endif # X86_32

		config AMD_NB

arch/x86/platform/geode/Makefile

+1 −0

Original line number	Diff line number	Diff line
		obj-$(CONFIG_ALIX) += alix.o
		obj-$(CONFIG_NET5501) += net5501.o

drivers/leds/leds-net5501.c→arch/x86/platform/geode/net5501.c

+154 −0

Original line number	Diff line number	Diff line
		/*
		* Soekris board support code
		* System Specific setup for Soekris net5501
		* At the moment this means setup of GPIO control of LEDs and buttons
		* on net5501 boards.
		*
		*
		* Copyright (C) 2008-2009 Tower Technologies
		* Written by Alessandro Zummo <a.zummo@towertech.it>
		*
		* Copyright (C) 2008 Constantin Baranov <const@mimas.ru>
		* Copyright (C) 2011 Ed Wildgoose <kernel@wildgooses.com>
		* and Philip Prindeville <philipp@redfish-solutions.com>
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2
		* as published by the Free Software Foundation.
		@@ -13,18 +20,50 @@
		#include <linux/init.h>
		#include <linux/io.h>
		#include <linux/string.h>
		#include <linux/module.h>
		#include <linux/leds.h>
		#include <linux/platform_device.h>
		#include <linux/gpio.h>
		#include <linux/module.h>
		#include <linux/input.h>
		#include <linux/gpio_keys.h>

		#include <asm/geode.h>

		static const struct gpio_led net5501_leds[] = {
		#define BIOS_REGION_BASE 0xffff0000
		#define BIOS_REGION_SIZE 0x00010000

		static struct gpio_keys_button net5501_gpio_buttons[] = {
		{
		.code = KEY_RESTART,
		.gpio = 24,
		.active_low = 1,
		.desc = "Reset button",
		.type = EV_KEY,
		.wakeup = 0,
		.debounce_interval = 100,
		.can_disable = 0,
		}
		};
		static struct gpio_keys_platform_data net5501_buttons_data = {
		.buttons = net5501_gpio_buttons,
		.nbuttons = ARRAY_SIZE(net5501_gpio_buttons),
		.poll_interval = 20,
		};

		static struct platform_device net5501_buttons_dev = {
		.name = "gpio-keys-polled",
		.id = 1,
		.dev = {
		.platform_data = &net5501_buttons_data,
		}
		};

		static struct gpio_led net5501_leds[] = {
		{
		.name = "error",
		.name = "net5501:1",
		.gpio = 6,
		.default_trigger = "default-on",
		.active_low = 1,
		},
		};

		@@ -39,59 +78,77 @@ static struct platform_device net5501_leds_dev = {
		.dev.platform_data = &net5501_leds_data,
		};

		static void __init init_net5501(void)
		static struct __initdata platform_device *net5501_devs[] = {
		&net5501_buttons_dev,
		&net5501_leds_dev,
		};

		static void __init register_net5501(void)
		{
		platform_device_register(&net5501_leds_dev);
		/* Setup LED control through leds-gpio driver */
		platform_add_devices(net5501_devs, ARRAY_SIZE(net5501_devs));
		}

		struct soekris_board {
		struct net5501_board {
		u16 offset;
		u16 len;
		char *sig;
		u8 len;
		void (*init)(void);
		};

		static struct soekris_board __initdata boards[] = {
		{ 0xb7b, "net5501", 7, init_net5501 }, /* net5501 v1.33/1.33c */
		{ 0xb1f, "net5501", 7, init_net5501 }, /* net5501 v1.32i */
		static struct net5501_board __initdata boards[] = {
		{ 0xb7b, 7, "net5501" }, /* net5501 v1.33/1.33c */
		{ 0xb1f, 7, "net5501" }, /* net5501 v1.32i */
		};

		static int __init soekris_init(void)
		static bool __init net5501_present(void)
		{
		int i;
		unsigned char rombase, bios;
		bool found = false;

		if (!is_geode())
		return 0;

		rombase = ioremap(0xffff0000, 0xffff);
		rombase = ioremap(BIOS_REGION_BASE, BIOS_REGION_SIZE - 1);
		if (!rombase) {
		printk(KERN_INFO "Soekris net5501 LED driver failed to get rombase");
		return 0;
		printk(KERN_ERR "%s: failed to get rombase\n", KBUILD_MODNAME);
		return found;
		}

		bios = rombase + 0x20; /* null terminated */

		if (strncmp(bios, "comBIOS", 7))
		if (memcmp(bios, "comBIOS", 7))
		goto unmap;

		for (i = 0; i < ARRAY_SIZE(boards); i++) {
		unsigned char *model = rombase + boards[i].offset;

		if (strncmp(model, boards[i].sig, boards[i].len) == 0) {
		printk(KERN_INFO "Soekris %s: %s\n", model, bios);
		if (!memcmp(model, boards[i].sig, boards[i].len)) {
		printk(KERN_INFO "%s: system is recognized as \"%s\"\n",
		KBUILD_MODNAME, model);

		if (boards[i].init)
		boards[i].init();
		found = true;
		break;
		}
		}

		unmap:
		iounmap(rombase);
		return found;
		}

		static int __init net5501_init(void)
		{
		if (!is_geode())
		return 0;

		if (!net5501_present())
		return 0;

		register_net5501();

		return 0;
		}

		arch_initcall(soekris_init);
		module_init(net5501_init);

		MODULE_AUTHOR("Philip Prindeville <philipp@redfish-solutions.com>");
		MODULE_DESCRIPTION("Soekris net5501 System Setup");
		MODULE_LICENSE("GPL");

drivers/leds/Kconfig

+0 −10

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		@@ -89,16 +89,6 @@ config LEDS_NET48XX
		This option enables support for the Soekris net4801 and net4826 error
		LED.

		config LEDS_NET5501
		tristate "LED Support for Soekris net5501 series Error LED"
		depends on LEDS_TRIGGERS
		depends on X86 && GPIO_CS5535
		select LEDS_TRIGGER_DEFAULT_ON
		default n
		help
		Add support for the Soekris net5501 board (detection, error led
		and GPIO).

		config LEDS_FSG
		tristate "LED Support for the Freecom FSG-3"
		depends on LEDS_CLASS

drivers/leds/Makefile

+0 −1

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		@@ -14,7 +14,6 @@ obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o
		obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
		obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
		obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o
		obj-$(CONFIG_LEDS_NET5501) += leds-net5501.o
		obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o
		obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o
		obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o

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