Add a LED driver for MTX-1 boards, yeah baby

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6454 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 150 insertions, 2 deletions

diff --git a/target/linux/au1000-2.6/config/default b/target/linux/au1000-2.6/config/default
index b62c3f0fb..351d6fda3 100644
--- a/target/linux/au1000-2.6/config/default
+++ b/target/linux/au1000-2.6/config/default
@@ -95,6 +95,8 @@ CONFIG_I2C_CHARDEV=m
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_JFFS2_FS_DEBUG=0
 # CONFIG_LAN_SAA9730 is not set
+CONFIG_LEDS_MTX1=y
+# CONFIG_LEDS_TRIGGERS is not set
 # CONFIG_MACH_DECSTATION is not set
 # CONFIG_MACH_JAZZ is not set
 # CONFIG_MACH_VR41XX is not set
@@ -182,12 +184,10 @@ CONFIG_MTX1_WATCHDOG=y
 # CONFIG_NATSEMI is not set
 # CONFIG_NE2K_PCI is not set
 # CONFIG_NET_VENDOR_3COM is not set
-# CONFIG_NEW_LEDS is not set
 # CONFIG_PAGE_SIZE_16KB is not set
 CONFIG_PAGE_SIZE_4KB=y
 # CONFIG_PAGE_SIZE_64KB is not set
 # CONFIG_PAGE_SIZE_8KB is not set
-# CONFIG_PCMCIA is not set
 # CONFIG_PCCARD is not set
 # CONFIG_PCIPCWATCHDOG is not set
 CONFIG_PHYLIB=y
diff --git a/target/linux/au1000-2.6/patches/011-mtx1_leds.patch b/target/linux/au1000-2.6/patches/011-mtx1_leds.patch
new file mode 100644
index 000000000..350c531fb
--- /dev/null
+++ b/target/linux/au1000-2.6/patches/011-mtx1_leds.patch
@@ -0,0 +1,148 @@
+diff -urN linux-2.6.19.2/drivers/leds/Kconfig linux-2.6.19.2.new/drivers/leds/Kconfig
+--- linux-2.6.19.2/drivers/leds/Kconfig	2007-01-10 20:10:37.000000000 +0100
++++ linux-2.6.19.2.new/drivers/leds/Kconfig	2007-03-02 13:50:28.000000000 +0100
+@@ -76,6 +76,13 @@
+ 	  This option enables support for the Soekris net4801 and net4826 error
+ 	  LED.
+ 
++config LEDS_MTX1
++	tristate "LED Support for MTX-1 boards"
++	depends on LEDS_CLASS && MIPS_MTX1
++	help
++	  This option enables support for the MTX-1 power and status LED.
++
++
+ comment "LED Triggers"
+ 
+ config LEDS_TRIGGERS
+diff -urN linux-2.6.19.2/drivers/leds/Makefile linux-2.6.19.2.new/drivers/leds/Makefile
+--- linux-2.6.19.2/drivers/leds/Makefile	2007-01-10 20:10:37.000000000 +0100
++++ linux-2.6.19.2.new/drivers/leds/Makefile	2007-03-02 13:49:35.000000000 +0100
+@@ -13,6 +13,7 @@
+ 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_MTX1)			+= leds-mtx1.o
+ 
+ # LED Triggers
+ obj-$(CONFIG_LEDS_TRIGGER_TIMER)	+= ledtrig-timer.o
+diff -urN linux-2.6.19.2/drivers/leds/leds-mtx1.c linux-2.6.19.2.new/drivers/leds/leds-mtx1.c
+--- linux-2.6.19.2/drivers/leds/leds-mtx1.c	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.19.2.new/drivers/leds/leds-mtx1.c	2007-03-02 13:49:08.000000000 +0100
+@@ -0,0 +1,116 @@
++/*
++ * LED driver for MTX-1 boards
++ *
++ * Copyright 2007 Florian Fainelli <florian@openwrt.org>
++ * 
++ * 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/mach-au1x00/au1000.h>
++
++static struct platform_device *pdev;
++
++static void mtx1_green_led_set(struct led_classdev *led_cdev, enum led_brightness brightness)
++{
++	/* The power LED cannot be controlled the same way as for the Status LED */
++	if (brightness) {
++        	au_writel( 0x18000800, GPIO2_OUTPUT );
++	} else {
++		au_writel( 0x18000000, GPIO2_OUTPUT);
++	}
++}
++
++static void mtx1_red_led_set(struct led_classdev *led_cdev, enum led_brightness brightness)
++{
++	/* We store GPIO address (originally address - 200) in the "flags" field*/
++	unsigned long pinmask = 1 << led_cdev->flags; 
++	if (brightness) {
++		au_writel((pinmask << 16) | pinmask, GPIO2_OUTPUT); 
++	} else { 
++		au_writel((pinmask << 16) | 0, GPIO2_OUTPUT);
++	}
++}
++
++static struct led_classdev mtx1_green_led = {
++	.name = "mtx1:green",
++	.brightness_set = mtx1_green_led_set,
++};
++
++static struct led_classdev mtx1_red_led = {
++	.name = "mtx1:red",
++	.flags = 12,
++	.brightness_set = mtx1_red_led_set,
++	.default_trigger = "ide-disk",
++};
++
++static int mtx1_leds_probe(struct platform_device *pdev)
++{
++	int ret;
++
++	ret = led_classdev_register(&pdev->dev, &mtx1_green_led);
++	if (ret < 0)
++		goto out;
++
++	ret = led_classdev_register(&pdev->dev, &mtx1_red_led);
++	if (ret < 0)
++		led_classdev_unregister(&mtx1_green_led);
++
++out:
++	return ret;
++}
++
++static int mtx1_leds_remove(struct platform_device *pdev)
++{
++	led_classdev_unregister(&mtx1_green_led);
++	led_classdev_unregister(&mtx1_red_led);
++	return 0;
++}
++
++static struct platform_driver mtx1_leds_driver = {
++	.probe = mtx1_leds_probe,
++	.remove = mtx1_leds_remove,
++	.driver = {
++		.name = "mtx1-leds",
++	}
++};
++
++static int __init mtx1_leds_init(void)
++{
++	int ret;
++
++        ret = platform_driver_register(&mtx1_leds_driver);
++        if (ret < 0)
++                goto out;
++
++        pdev = platform_device_register_simple("mtx1-leds", -1, NULL, 0);
++        if (IS_ERR(pdev)) {
++                ret = PTR_ERR(pdev);
++                platform_driver_unregister(&mtx1_leds_driver);
++                goto out;
++        }
++
++out:
++        return ret;
++
++}
++		
++static void __exit mtx1_leds_exit(void)
++{
++	platform_device_unregister(pdev);
++	platform_driver_unregister(&mtx1_leds_driver);
++}
++
++module_init(mtx1_leds_init);
++module_exit(mtx1_leds_exit);
++		
++MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
++MODULE_DESCRIPTION("MTX-1 LED driver");
++MODULE_LICENSE("GPL");