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--- 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_ */
|
