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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/leds/leds-locomo.c
Initial import
Diffstat (limited to 'drivers/leds/leds-locomo.c')
-rw-r--r--drivers/leds/leds-locomo.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/leds/leds-locomo.c b/drivers/leds/leds-locomo.c
new file mode 100644
index 000000000..80ba04888
--- /dev/null
+++ b/drivers/leds/leds-locomo.c
@@ -0,0 +1,97 @@
+/*
+ * linux/drivers/leds/leds-locomo.c
+ *
+ * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu>
+ *
+ * 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/module.h>
+#include <linux/device.h>
+#include <linux/leds.h>
+
+#include <mach/hardware.h>
+#include <asm/hardware/locomo.h>
+
+static void locomoled_brightness_set(struct led_classdev *led_cdev,
+ enum led_brightness value, int offset)
+{
+ struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev->parent);
+ unsigned long flags;
+
+ local_irq_save(flags);
+ if (value)
+ locomo_writel(LOCOMO_LPT_TOFH, locomo_dev->mapbase + offset);
+ else
+ locomo_writel(LOCOMO_LPT_TOFL, locomo_dev->mapbase + offset);
+ local_irq_restore(flags);
+}
+
+static void locomoled_brightness_set0(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ locomoled_brightness_set(led_cdev, value, LOCOMO_LPT0);
+}
+
+static void locomoled_brightness_set1(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ locomoled_brightness_set(led_cdev, value, LOCOMO_LPT1);
+}
+
+static struct led_classdev locomo_led0 = {
+ .name = "locomo:amber:charge",
+ .default_trigger = "main-battery-charging",
+ .brightness_set = locomoled_brightness_set0,
+};
+
+static struct led_classdev locomo_led1 = {
+ .name = "locomo:green:mail",
+ .default_trigger = "nand-disk",
+ .brightness_set = locomoled_brightness_set1,
+};
+
+static int locomoled_probe(struct locomo_dev *ldev)
+{
+ int ret;
+
+ ret = led_classdev_register(&ldev->dev, &locomo_led0);
+ if (ret < 0)
+ return ret;
+
+ ret = led_classdev_register(&ldev->dev, &locomo_led1);
+ if (ret < 0)
+ led_classdev_unregister(&locomo_led0);
+
+ return ret;
+}
+
+static int locomoled_remove(struct locomo_dev *dev)
+{
+ led_classdev_unregister(&locomo_led0);
+ led_classdev_unregister(&locomo_led1);
+ return 0;
+}
+
+static struct locomo_driver locomoled_driver = {
+ .drv = {
+ .name = "locomoled"
+ },
+ .devid = LOCOMO_DEVID_LED,
+ .probe = locomoled_probe,
+ .remove = locomoled_remove,
+};
+
+static int __init locomoled_init(void)
+{
+ return locomo_driver_register(&locomoled_driver);
+}
+module_init(locomoled_init);
+
+MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>");
+MODULE_DESCRIPTION("Locomo LED driver");
+MODULE_LICENSE("GPL");