This patch adds support for controlling the LEDS on the MTX-1 board. It
registers the power(green) and status(red) LEDs.
Signed-off-by: Florian Fainelli <florian.fainelli@xxxxxxxxxxx>
--
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@xxxxxxxxxxx>
+ *
+ * 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@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("MTX-1 LED driver");
+MODULE_LICENSE("GPL");
