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authorflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-05-20 20:09:52 +0000
committerflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-05-20 20:09:52 +0000
commit26af02c4263529521f250c4e199ffa5ad78894b9 (patch)
treefabd9b976f3ed311137607e9f999346982009e0b /target/linux/au1000-2.6/files
parent2641c80c8d6ca77bcf651a76d97b1d7d565de215 (diff)
Split the led driver
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7290 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/au1000-2.6/files')
-rw-r--r--target/linux/au1000-2.6/files/drivers/leds/leds-mtx1.c116
1 files changed, 116 insertions, 0 deletions
diff --git a/target/linux/au1000-2.6/files/drivers/leds/leds-mtx1.c b/target/linux/au1000-2.6/files/drivers/leds/leds-mtx1.c
new file mode 100644
index 000000000..86615f46b
--- /dev/null
+++ b/target/linux/au1000-2.6/files/drivers/leds/leds-mtx1.c
@@ -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");