openwrt-xburst/target/linux/lantiq/patches-2.6.32/140-falcon-easy98000-cpld-led.patch

--- a/arch/mips/lantiq/falcon/Makefile
+++ b/arch/mips/lantiq/falcon/Makefile
@@ -1,3 +1,4 @@
 obj-y := clk-falcon.o devices.o gpio.o prom.o sysctrl.o reset.o
 obj-y += softdog_vpe.o
 obj-$(CONFIG_LANTIQ_MACH_EASY98000) += mach-easy98000.o
+obj-$(CONFIG_LANTIQ_MACH_EASY98000) += dev-leds-easy98000-cpld.o
--- /dev/null
+++ b/arch/mips/lantiq/falcon/dev-leds-easy98000-cpld.c
@@ -0,0 +1,160 @@
+/*
+ *  EASY98000 CPLD LED driver
+ *
+ *  Copyright (C) 2010 Ralph Hempel <ralph.hempel@lantiq.com>
+ *
+ *  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/version.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/errno.h>
+#include <linux/leds.h>
+#include <linux/slab.h>
+
+#include "dev-leds-easy98000-cpld.h"
+
+const char *led_name[8] = {
+	"ge0_act",
+	"ge0_link",
+	"ge1_act",
+	"ge1_link",
+	"fe2_act",
+	"fe2_link",
+	"fe3_act",
+	"fe3_link"
+};
+
+#define cpld_base7			((u16 *)(KSEG1 | 0x17c0000c))
+#define cpld_base8			((u16 *)(KSEG1 | 0x17c00012))
+
+#define ltq_r16(reg)			__raw_readw(reg)
+#define ltq_w16(val, reg)		__raw_writew(val, reg)
+
+struct cpld_led_dev {
+	struct led_classdev	cdev;
+	u8			mask;
+	u16			*base;
+};
+
+struct cpld_led_drvdata {
+	struct cpld_led_dev	*led_devs;
+	int			num_leds;
+};
+
+void led_set(u8 mask, u16 *base)
+{
+	ltq_w16(ltq_r16(base) | mask, base);
+}
+
+void led_clear(u8 mask, u16 *base)
+{
+	ltq_w16(ltq_r16(base) & (~mask), base);
+}
+
+void led_blink_clear(u8 mask, u16 *base)
+{
+	led_clear(mask, base);
+}
+
+static void led_brightness(struct led_classdev *led_cdev,
+			       enum led_brightness value)
+{
+	struct cpld_led_dev *led_dev =
+	    container_of(led_cdev, struct cpld_led_dev, cdev);
+
+	if (value)
+		led_set(led_dev->mask, led_dev->base);
+	else
+		led_clear(led_dev->mask, led_dev->base);
+}
+
+static int led_probe(struct platform_device *pdev)
+{
+	int i;
+	char name[32];
+	struct cpld_led_drvdata *drvdata;
+	int ret = 0;
+
+	drvdata = kzalloc(sizeof(struct cpld_led_drvdata) +
+			  sizeof(struct cpld_led_dev) * MAX_LED,
+			  GFP_KERNEL);
+	if (!drvdata)
+		return -ENOMEM;
+
+	drvdata->led_devs = (struct cpld_led_dev *) &drvdata[1];
+
+	for (i = 0; i < MAX_LED; i++) {
+		struct cpld_led_dev *led_dev = &drvdata->led_devs[i];
+		led_dev->cdev.brightness_set = led_brightness;
+		led_dev->cdev.default_trigger = NULL;
+		led_dev->mask = 1 << (i % 8);
+		if(i < 8) {
+			sprintf(name, "easy98000-cpld:%s", led_name[i]);
+			led_dev->base = cpld_base8;
+		} else {
+			sprintf(name, "easy98000-cpld:red:%d", i-8);
+			led_dev->base = cpld_base7;
+		}
+		led_dev->cdev.name = name;
+		ret = led_classdev_register(&pdev->dev, &led_dev->cdev);
+		if (ret)
+			goto err;
+	}
+	platform_set_drvdata(pdev, drvdata);
+	return 0;
+
+err:
+	printk("led_probe: 3\n");
+	for (i = i - 1; i >= 0; i--)
+		led_classdev_unregister(&drvdata->led_devs[i].cdev);
+
+	kfree(drvdata);
+	return ret;
+}
+
+static int led_remove(struct platform_device *pdev)
+{
+	int i;
+	struct cpld_led_drvdata *drvdata = platform_get_drvdata(pdev);
+	for (i = 0; i < MAX_LED; i++)
+		led_classdev_unregister(&drvdata->led_devs[i].cdev);
+	kfree(drvdata);
+	return 0;
+}
+
+static struct platform_driver led_driver = {
+	.probe = led_probe,
+	.remove = led_remove,
+	.driver = {
+		   .name = LED_NAME,
+		   .owner = THIS_MODULE,
+		   },
+};
+
+int __init easy98000_cpld_led_init(void)
+{
+	pr_info(LED_DESC ", Version " LED_VERSION
+		" (c) Copyright 2011, Lantiq Deutschland GmbH\n");
+	return platform_driver_register(&led_driver);
+}
+
+void __exit easy98000_cpld_led_exit(void)
+{
+	platform_driver_unregister(&led_driver);
+}
+
+module_init(easy98000_cpld_led_init);
+module_exit(easy98000_cpld_led_exit);
+
+MODULE_DESCRIPTION(LED_NAME);
+MODULE_DESCRIPTION(LED_DESC);
+MODULE_AUTHOR("Ralph Hempel <ralph.hempel@lantiq.com>");
+MODULE_LICENSE("GPL v2");
+
--- /dev/null
+++ b/arch/mips/lantiq/falcon/dev-leds-easy98000-cpld.h
@@ -0,0 +1,20 @@
+/*
+ *  EASY98000 CPLD LED driver
+ *
+ *  Copyright (C) 2010 Ralph Hempel <ralph.hempel@lantiq.com>
+ *
+ *  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.
+ *
+ */
+#ifndef _INCLUDE_EASY98000_CPLD_LED_H_
+#define _INCLUDE_EASY98000_CPLD_LED_H_
+
+#define LED_NAME	"easy98000_cpld_led"
+#define LED_DESC	"EASY98000 LED driver"
+#define LED_VERSION	"1.0.0"
+
+#define MAX_LED		16
+
+#endif	/* _INCLUDE_EASY98000_CPLD_LED_H_ */