lantiq: bump to 3.1

[openwrt/svn-archive/archive.git] / target / linux / lantiq / files-3.1 / arch / mips / lantiq / falcon / dev-leds-easy98000-cpld.c

diff --git a/target/linux/lantiq/files-3.1/arch/mips/lantiq/falcon/dev-leds-easy98000-cpld.c b/target/linux/lantiq/files-3.1/arch/mips/lantiq/falcon/dev-leds-easy98000-cpld.c
new file mode 100644 (file)
index 0000000..d02d261
--- /dev/null
+++ b/target/linux/lantiq/files-3.1/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 = __devexit_p(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");
+