LED driver for PCEngines ALIX boards

This patch adds a driver for the three LEDs that exists on the
PCEngines ALIX 2 and 3 series boards.

The driver is also added to the Alix profile.

Signed-off-by: Petr Liebman <petrliebman@gmail.com>

--

SVN-Revision: 9748
This commit is contained in:
Felix Fietkau 2007-12-14 00:52:15 +00:00
parent 2da3f6a256
commit 985ee9fc8f
4 changed files with 217 additions and 2 deletions

View file

@ -334,6 +334,22 @@ endef
$(eval $(call KernelPackage,leds-wrap))
define KernelPackage/leds-alix
SUBMENU:=$(OTHER_MENU)
TITLE:=PCengines ALIX LED support
DEPENDS:=@TARGET_x86
KCONFIG:=CONFIG_LEDS_ALIX
FILES:=$(LINUX_DIR)/drivers/leds/leds-alix.$(LINUX_KMOD_SUFFIX)
AUTOLOAD:=$(call AutoLoad,50,leds-alix)
endef
define KernelPackage/leds-alix/description
Kernel module for PCengines ALIX LEDs
endef
$(eval $(call KernelPackage,leds-alix))
define KernelPackage/ledtrig-morse
SUBMENU:=$(OTHER_MENU)
TITLE:=LED Morse Trigger

View file

@ -0,0 +1,172 @@
/*
* LEDs driver for PCEngines ALIX 2/3 series
*
* Copyright (C) 2007 Petr Liebman
*
* Based on leds-wrap.c
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <linux/err.h>
#include <asm/io.h>
#define DRVNAME "alix-led"
#define ALIX_LED1_PORT (0x6100)
#define ALIX_LED1_ON (1<<22)
#define ALIX_LED1_OFF (1<<6)
#define ALIX_LED2_PORT (0x6180)
#define ALIX_LED2_ON (1<<25)
#define ALIX_LED2_OFF (1<<9)
#define ALIX_LED3_PORT (0x6180)
#define ALIX_LED3_ON (1<<27)
#define ALIX_LED3_OFF (1<<11)
static struct platform_device *pdev;
static void alix_led_set_1(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value)
outl(ALIX_LED1_ON, ALIX_LED1_PORT);
else
outl(ALIX_LED1_OFF, ALIX_LED1_PORT);
}
static void alix_led_set_2(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value)
outl(ALIX_LED2_ON, ALIX_LED2_PORT);
else
outl(ALIX_LED2_OFF, ALIX_LED2_PORT);
}
static void alix_led_set_3(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value)
outl(ALIX_LED3_ON, ALIX_LED3_PORT);
else
outl(ALIX_LED3_OFF, ALIX_LED3_PORT);
}
static struct led_classdev alix_led_1 = {
.name = "alix:1",
.brightness_set = alix_led_set_1,
};
static struct led_classdev alix_led_2 = {
.name = "alix:2",
.brightness_set = alix_led_set_2,
};
static struct led_classdev alix_led_3 = {
.name = "alix:3",
.brightness_set = alix_led_set_3,
};
#ifdef CONFIG_PM
static int alix_led_suspend(struct platform_device *dev,
pm_message_t state)
{
led_classdev_suspend(&alix_led_1);
led_classdev_suspend(&alix_led_2);
led_classdev_suspend(&alix_led_3);
return 0;
}
static int alix_led_resume(struct platform_device *dev)
{
led_classdev_resume(&alix_led_1);
led_classdev_resume(&alix_led_2);
led_classdev_resume(&alix_led_3);
return 0;
}
#else
#define alix_led_suspend NULL
#define alix_led_resume NULL
#endif
static int alix_led_probe(struct platform_device *pdev)
{
int ret;
ret = led_classdev_register(&pdev->dev, &alix_led_1);
if (ret >= 0)
{
ret = led_classdev_register(&pdev->dev, &alix_led_2);
if (ret >= 0)
{
ret = led_classdev_register(&pdev->dev, &alix_led_3);
if (ret < 0)
led_classdev_unregister(&alix_led_2);
}
if (ret < 0)
led_classdev_unregister(&alix_led_1);
}
return ret;
}
static int alix_led_remove(struct platform_device *pdev)
{
led_classdev_unregister(&alix_led_1);
led_classdev_unregister(&alix_led_2);
led_classdev_unregister(&alix_led_3);
return 0;
}
static struct platform_driver alix_led_driver = {
.probe = alix_led_probe,
.remove = alix_led_remove,
.suspend = alix_led_suspend,
.resume = alix_led_resume,
.driver = {
.name = DRVNAME,
.owner = THIS_MODULE,
},
};
static int __init alix_led_init(void)
{
int ret;
ret = platform_driver_register(&alix_led_driver);
if (ret < 0)
goto out;
pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
if (IS_ERR(pdev)) {
ret = PTR_ERR(pdev);
platform_driver_unregister(&alix_led_driver);
goto out;
}
out:
return ret;
}
static void __exit alix_led_exit(void)
{
platform_device_unregister(pdev);
platform_driver_unregister(&alix_led_driver);
}
module_init(alix_led_init);
module_exit(alix_led_exit);
MODULE_AUTHOR("Petr Liebman");
MODULE_DESCRIPTION("PCEngines ALIX LED driver");
MODULE_LICENSE("GPL");

View file

@ -0,0 +1,27 @@
diff -Nur linux-2.6.23.1.orig/drivers/leds/Kconfig linux-2.6.23.1/drivers/leds/Kconfig
--- linux-2.6.23.1.orig/drivers/leds/Kconfig 2007-10-12 12:43:44.000000000 -0400
+++ linux-2.6.23.1/drivers/leds/Kconfig 2007-10-31 02:36:22.000000000 -0400
@@ -81,6 +81,12 @@
help
This option enables support for the PCEngines WRAP programmable LEDs.
+config LEDS_ALIX
+ tristate "LED Support for the ALIX 2/3 boards"
+ depends on LEDS_CLASS
+ help
+ This option enables support for the three LEDs on the PCEngines ALIX 2/3 boards.
+
config LEDS_H1940
tristate "LED Support for iPAQ H1940 device"
depends LEDS_CLASS && ARCH_H1940
diff -Nur linux-2.6.23.1.orig/drivers/leds/Makefile linux-2.6.23.1/drivers/leds/Makefile
--- linux-2.6.23.1.orig/drivers/leds/Makefile 2007-10-12 12:43:44.000000000 -0400
+++ linux-2.6.23.1/drivers/leds/Makefile 2007-10-31 02:36:17.000000000 -0400
@@ -14,6 +14,7 @@
obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o
obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o
+obj-$(CONFIG_LEDS_ALIX) += leds-alix.o
obj-$(CONFIG_LEDS_H1940) += leds-h1940.o
obj-$(CONFIG_LEDS_COBALT) += leds-cobalt.o
obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o

View file

@ -7,10 +7,10 @@
define Profile/Alix
NAME:=PCEngines Alix
PACKAGES:=kmod-via-rhine
PACKAGES:=kmod-via-rhine kmod-leds-alix
endef
define Profile/Alix/Description
Package set compatible with the PCEngines Alix. Contains VIA Rhine III VT6105M support
Package set compatible with the PCEngines Alix. Contains VIA Rhine III VT6105M and LED support
endef
$(eval $(call Profile,Alix))