Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / leds / leds-wrap.c

diff --git a/kernel/drivers/leds/leds-wrap.c b/kernel/drivers/leds/leds-wrap.c
new file mode 100644 (file)
index 0000000..1ba3def
--- /dev/null
+++ b/kernel/drivers/leds/leds-wrap.c
@@ -0,0 +1,153 @@
+/*
+ * LEDs driver for PCEngines WRAP
+ *
+ * Copyright (C) 2006 Kristian Kielhofner <kris@krisk.org>
+ *
+ * Based on leds-net48xx.c
+ *
+ * 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 <linux/io.h>
+#include <linux/scx200_gpio.h>
+#include <linux/module.h>
+
+#define DRVNAME "wrap-led"
+#define WRAP_POWER_LED_GPIO    2
+#define WRAP_ERROR_LED_GPIO    3
+#define WRAP_EXTRA_LED_GPIO    18
+
+static struct platform_device *pdev;
+
+static void wrap_power_led_set(struct led_classdev *led_cdev,
+               enum led_brightness value)
+{
+       if (value)
+               scx200_gpio_set_low(WRAP_POWER_LED_GPIO);
+       else
+               scx200_gpio_set_high(WRAP_POWER_LED_GPIO);
+}
+
+static void wrap_error_led_set(struct led_classdev *led_cdev,
+               enum led_brightness value)
+{
+       if (value)
+               scx200_gpio_set_low(WRAP_ERROR_LED_GPIO);
+       else
+               scx200_gpio_set_high(WRAP_ERROR_LED_GPIO);
+}
+
+static void wrap_extra_led_set(struct led_classdev *led_cdev,
+               enum led_brightness value)
+{
+       if (value)
+               scx200_gpio_set_low(WRAP_EXTRA_LED_GPIO);
+       else
+               scx200_gpio_set_high(WRAP_EXTRA_LED_GPIO);
+}
+
+static struct led_classdev wrap_power_led = {
+       .name                   = "wrap::power",
+       .brightness_set         = wrap_power_led_set,
+       .default_trigger        = "default-on",
+       .flags                  = LED_CORE_SUSPENDRESUME,
+};
+
+static struct led_classdev wrap_error_led = {
+       .name           = "wrap::error",
+       .brightness_set = wrap_error_led_set,
+       .flags                  = LED_CORE_SUSPENDRESUME,
+};
+
+static struct led_classdev wrap_extra_led = {
+       .name           = "wrap::extra",
+       .brightness_set = wrap_extra_led_set,
+       .flags                  = LED_CORE_SUSPENDRESUME,
+};
+
+static int wrap_led_probe(struct platform_device *pdev)
+{
+       int ret;
+
+       ret = led_classdev_register(&pdev->dev, &wrap_power_led);
+       if (ret < 0)
+               return ret;
+
+       ret = led_classdev_register(&pdev->dev, &wrap_error_led);
+       if (ret < 0)
+               goto err1;
+
+       ret = led_classdev_register(&pdev->dev, &wrap_extra_led);
+       if (ret < 0)
+               goto err2;
+
+       return ret;
+
+err2:
+       led_classdev_unregister(&wrap_error_led);
+err1:
+       led_classdev_unregister(&wrap_power_led);
+
+       return ret;
+}
+
+static int wrap_led_remove(struct platform_device *pdev)
+{
+       led_classdev_unregister(&wrap_power_led);
+       led_classdev_unregister(&wrap_error_led);
+       led_classdev_unregister(&wrap_extra_led);
+       return 0;
+}
+
+static struct platform_driver wrap_led_driver = {
+       .probe          = wrap_led_probe,
+       .remove         = wrap_led_remove,
+       .driver         = {
+               .name           = DRVNAME,
+       },
+};
+
+static int __init wrap_led_init(void)
+{
+       int ret;
+
+       if (!scx200_gpio_present()) {
+               ret = -ENODEV;
+               goto out;
+       }
+
+       ret = platform_driver_register(&wrap_led_driver);
+       if (ret < 0)
+               goto out;
+
+       pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
+       if (IS_ERR(pdev)) {
+               ret = PTR_ERR(pdev);
+               platform_driver_unregister(&wrap_led_driver);
+               goto out;
+       }
+
+out:
+       return ret;
+}
+
+static void __exit wrap_led_exit(void)
+{
+       platform_device_unregister(pdev);
+       platform_driver_unregister(&wrap_led_driver);
+}
+
+module_init(wrap_led_init);
+module_exit(wrap_led_exit);
+
+MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>");
+MODULE_DESCRIPTION("PCEngines WRAP LED driver");
+MODULE_LICENSE("GPL");
+