x86/geode/net5501: Add platform driver for Soekris Engineering net5501
Add platform driver for the Soekris Engineering net5501 single-board computer. Probes well-known locations in ROM for BIOS signature to confirm correct platform. Registers 1 LED and 1 GPIO-based button (typically used for soft reset). Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Andres Salomon <dilinger@queued.net> Cc: Matthew Garrett <mjg@redhat.com> [ Removed Kconfig and Makefile detritus from drivers/leds/] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/n/tip-jv5uf34996juqh5syes8mn4h@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Philip Prindeville
Ingo Molnar
parent
373913b568
commit
da4e330294
@ -2114,6 +2114,12 @@ config ALIX
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Note: You have to set alix.force=1 for boards with Award BIOS.
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config NET5501
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bool "Soekris Engineering net5501 System Support (LEDS, GPIO, etc)"
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select GPIOLIB
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---help---
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This option enables system support for the Soekris Engineering net5501.
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endif # X86_32
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config AMD_NB
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@ -1 +1,2 @@
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obj-$(CONFIG_ALIX) += alix.o
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obj-$(CONFIG_NET5501) += net5501.o
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154
arch/x86/platform/geode/net5501.c
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154
arch/x86/platform/geode/net5501.c
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@ -0,0 +1,154 @@
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/*
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* System Specific setup for Soekris net5501
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* At the moment this means setup of GPIO control of LEDs and buttons
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* on net5501 boards.
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*
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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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* Copyright (C) 2008 Constantin Baranov <const@mimas.ru>
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* Copyright (C) 2011 Ed Wildgoose <kernel@wildgooses.com>
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* and Philip Prindeville <philipp@redfish-solutions.com>
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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/module.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 <linux/input.h>
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#include <linux/gpio_keys.h>
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#include <asm/geode.h>
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#define BIOS_REGION_BASE 0xffff0000
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#define BIOS_REGION_SIZE 0x00010000
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static struct gpio_keys_button net5501_gpio_buttons[] = {
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{
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.code = KEY_RESTART,
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.gpio = 24,
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.active_low = 1,
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.desc = "Reset button",
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.type = EV_KEY,
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.wakeup = 0,
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.debounce_interval = 100,
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.can_disable = 0,
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}
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};
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static struct gpio_keys_platform_data net5501_buttons_data = {
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.buttons = net5501_gpio_buttons,
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.nbuttons = ARRAY_SIZE(net5501_gpio_buttons),
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.poll_interval = 20,
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};
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static struct platform_device net5501_buttons_dev = {
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.name = "gpio-keys-polled",
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.id = 1,
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.dev = {
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.platform_data = &net5501_buttons_data,
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}
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};
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static struct gpio_led net5501_leds[] = {
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{
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.name = "net5501:1",
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.gpio = 6,
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.default_trigger = "default-on",
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.active_low = 1,
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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 struct __initdata platform_device *net5501_devs[] = {
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&net5501_buttons_dev,
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&net5501_leds_dev,
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};
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static void __init register_net5501(void)
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{
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/* Setup LED control through leds-gpio driver */
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platform_add_devices(net5501_devs, ARRAY_SIZE(net5501_devs));
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}
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struct net5501_board {
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u16 offset;
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u16 len;
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char *sig;
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};
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static struct net5501_board __initdata boards[] = {
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{ 0xb7b, 7, "net5501" }, /* net5501 v1.33/1.33c */
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{ 0xb1f, 7, "net5501" }, /* net5501 v1.32i */
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};
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static bool __init net5501_present(void)
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{
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int i;
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unsigned char *rombase, *bios;
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bool found = false;
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rombase = ioremap(BIOS_REGION_BASE, BIOS_REGION_SIZE - 1);
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if (!rombase) {
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printk(KERN_ERR "%s: failed to get rombase\n", KBUILD_MODNAME);
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return found;
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}
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bios = rombase + 0x20; /* null terminated */
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if (memcmp(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 (!memcmp(model, boards[i].sig, boards[i].len)) {
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printk(KERN_INFO "%s: system is recognized as \"%s\"\n",
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KBUILD_MODNAME, model);
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found = true;
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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 found;
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}
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static int __init net5501_init(void)
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{
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if (!is_geode())
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return 0;
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if (!net5501_present())
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return 0;
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register_net5501();
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return 0;
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}
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module_init(net5501_init);
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MODULE_AUTHOR("Philip Prindeville <philipp@redfish-solutions.com>");
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MODULE_DESCRIPTION("Soekris net5501 System Setup");
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MODULE_LICENSE("GPL");
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@ -89,16 +89,6 @@ config LEDS_NET48XX
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This option enables support for the Soekris net4801 and net4826 error
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LED.
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config LEDS_NET5501
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tristate "LED Support for Soekris net5501 series Error LED"
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depends on LEDS_TRIGGERS
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depends on X86 && GPIO_CS5535
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select LEDS_TRIGGER_DEFAULT_ON
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default n
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help
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Add support for the Soekris net5501 board (detection, error led
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and GPIO).
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config LEDS_FSG
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tristate "LED Support for the Freecom FSG-3"
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depends on LEDS_CLASS
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@ -14,7 +14,6 @@ obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o
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obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
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obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
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obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o
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obj-$(CONFIG_LEDS_NET5501) += leds-net5501.o
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obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o
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obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o
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obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o
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@ -1,97 +0,0 @@
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/*
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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 <linux/module.h>
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#include <asm/geode.h>
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static const 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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