Preliminary ADM5120 support, marked as broken

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6614 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 58 insertions, 0 deletions

diff --git a/target/linux/adm5120-2.6/files/drivers/char/adm5120_gpio.c b/target/linux/adm5120-2.6/files/drivers/char/adm5120_gpio.c
new file mode 100644
index 0000000000..6fccfb029e
--- /dev/null
+++ b/target/linux/adm5120-2.6/files/drivers/char/adm5120_gpio.c
@@ -0,0 +1,58 @@
+/*
+ *	ADM5120 LED (GPIO) driver
+ *
+ *	Copyright (C) Jeroen Vreeken (pe1rxq@amsat.org), 2005
+ */
+
+#include <linux/autoconf.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/miscdevice.h>
+#include <linux/fs.h>
+
+#define LED_MINOR 151
+#define GPIO_IO        ((unsigned long *)0xb20000b8)
+
+static ssize_t adm5120_led_write(struct file *file, const char __user *data,
+	size_t len, loff_t *ppos)
+{
+	unsigned char val;
+
+	if (!len || get_user(val, data))
+		return -EFAULT;
+	*GPIO_IO=(*GPIO_IO & 0x00ffffff) | (val<<24);
+	return 1;
+}
+
+static struct file_operations adm5120_led_fops = {
+	.owner	= THIS_MODULE,
+	.write	= adm5120_led_write,
+};
+
+static struct miscdevice adm5120_led_device = {
+	LED_MINOR,
+	"led",
+	&adm5120_led_fops,
+};
+
+static int __init adm5120_led_init(void)
+{
+	printk(KERN_INFO "ADM5120 LED & GPIO driver\n");
+	if (misc_register(&adm5120_led_device)) {
+		printk(KERN_WARNING "Couldn't register device %d\n", LED_MINOR);
+		return -EBUSY;
+	}
+	return 0;
+}
+
+static void __exit adm5120_led_exit(void)
+{
+	misc_deregister(&adm5120_led_device);
+}
+
+module_init(adm5120_led_init);
+module_exit(adm5120_led_exit);
+
+MODULE_DESCRIPTION("ADM5120 LED and GPIO driver");
+MODULE_AUTHOR("Jeroen Vreeken");
+MODULE_LICENSE("GPL");