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[PATCH] Add support for Cobalt Server front LED

To: linux-mips@linux-mips.org
Subject: [PATCH] Add support for Cobalt Server front LED
From: Florian Fainelli <florian.fainelli@int-evry.fr>
Date: Mon, 15 Jan 2007 19:36:52 +0100
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
User-agent: KMail/1.9.5
Hi all,

This patch adds support for controlling the front LED on Cobalt Server. It has 
been tested on Qube 2 with either no default trigger, or the IDE-activity 
trigger. Both work fine. Please comment and test !

Thanks

Florian

Signed-off-by: Florian Fainelli <florian.fainelli@int-evry.fr>

diff -urN linux-2.6.19.1/include/asm-mips/mach-cobalt/cobalt.h 
linux-2.6.19.1.led/include/asm-mips/mach-cobalt/cobalt.h
--- linux-2.6.19.1/include/asm-mips/mach-cobalt/cobalt.h        2006-12-11 
20:32:53.000000000 +0100
+++ linux-2.6.19.1.led/include/asm-mips/mach-cobalt/cobalt.h    2007-01-15 
19:29:07.000000000 +0100
@@ -97,6 +97,7 @@
                (PCI_FUNC (devfn) << 8) | (where)), GT_PCI0_CFGADDR_OFS)

 #define COBALT_LED_PORT                (*(volatile unsigned char *) 
CKSEG1ADDR(0x1c000000))
+#define COBALT_LED_BASE         0xbc000000
 # define COBALT_LED_BAR_LEFT   (1 << 0)        /* Qube */
 # define COBALT_LED_BAR_RIGHT  (1 << 1)        /* Qube */
 # define COBALT_LED_WEB                (1 << 2)        /* RaQ */
diff -urN linux-2.6.19.1/drivers/leds/Kconfig 
linux-2.6.19.1.led/drivers/leds/Kconfig
--- linux-2.6.19.1/drivers/leds/Kconfig 2006-12-11 20:32:53.000000000 +0100
+++ linux-2.6.19.1.led/drivers/leds/Kconfig     2007-01-15 19:22:00.000000000 
+0100
@@ -76,6 +76,12 @@
          This option enables support for the Soekris net4801 and net4826 
error
          LED.

+config LEDS_COBALT
+       tristate "LED Support for Cobalt Server front LED"
+       depends on LEDS_CLASS && MIPS_COBALT
+       help
+         This option enables support for the front LED on Cobalt Server
+
 comment "LED Triggers"

 config LEDS_TRIGGERS
diff -urN linux-2.6.19.1/drivers/leds/leds-cobalt.c 
linux-2.6.19.1.led/drivers/leds/leds-cobalt.c
--- linux-2.6.19.1/drivers/leds/leds-cobalt.c   1970-01-01 01:00:00.000000000 
+0100
+++ linux-2.6.19.1.led/drivers/leds/leds-cobalt.c       2007-01-15 
19:28:09.000000000 +0100
@@ -0,0 +1,55 @@
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/leds.h>
+#include <asm/mach-cobalt/cobalt.h>
+
+/* Copyright 2006 - Florian Fainelli <florian@openwrt.org>
+ *
+ * This driver let you control the Cobalt Qube/RaQ front LED
+ *
+ * 255 (max brightness) -> turn the led on
+ * 0 -> turn the led off
+ *
+ * If you want the LED to be blinking on IDE activity, select the IDE trigger
+ */
+
+void cobalt_led_set(struct led_classdev *led_cdev, enum led_brightness 
brightness)
+{
+       switch (brightness) {
+       case LED_OFF:
+               *(volatile uint8_t *) COBALT_LED_BASE = 0;
+               break;
+       case LED_FULL:
+               *(volatile uint8_t *) COBALT_LED_BASE = COBALT_LED_BAR_LEFT | 
COBALT_LED_BAR_RIGHT;
+               break;
+       default:
+               return;
+       }
+}
+
+static struct led_classdev cobalt_led = {
+       .name = "cobalt-front-led",
+       .brightness_set = cobalt_led_set,
+#ifdef CONFIG_LEDS_TRIGGER_IDE_DISK
+       .default_trigger = "ide-disk",
+#endif
+};
+
+static int __init cobalt_led_init(void)
+{
+       return led_classdev_register(NULL, &cobalt_led);
+}
+
+static void __exit cobalt_led_exit(void)
+{
+       led_classdev_unregister(&cobalt_led);
+}
+
+module_init(cobalt_led_init);
+module_exit(cobalt_led_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Front LED support for Cobalt Server");
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
diff -urN linux-2.6.19.1/drivers/leds/Makefile 
linux-2.6.19.1.led/drivers/leds/Makefile
--- linux-2.6.19.1/drivers/leds/Makefile        2006-12-11 20:32:53.000000000 
+0100
+++ linux-2.6.19.1.led/drivers/leds/Makefile    2007-01-15 19:22:18.000000000 
+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_COBALT)              += leds-cobalt.o

 # LED Triggers
 obj-$(CONFIG_LEDS_TRIGGER_TIMER)       += ledtrig-timer.o

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