Extra omap code in linux-omap tree

[linux-2.6-omap-h63xx.git] / drivers / leds / leds-omap.c

diff --git a/drivers/leds/leds-omap.c b/drivers/leds/leds-omap.c
new file mode 100644 (file)
index 0000000..e936403
--- /dev/null
+++ b/drivers/leds/leds-omap.c
@@ -0,0 +1,129 @@
+/* drivers/leds/leds-omap.c
+ *
+ * (C) 2006 Samsung Electronics
+ * Kyungmin Park <kyungmin.park@samsung.com>
+ *
+ * OMAP - LEDs GPIO driver
+ *
+ * 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/gpio.h>
+
+#include <mach/hardware.h>
+#include <mach/led.h>
+
+/* our context */
+
+static void omap_set_led_gpio(struct led_classdev *led_cdev,
+                           enum led_brightness value)
+{
+       struct omap_led_config *led_dev;
+
+       led_dev = container_of(led_cdev, struct omap_led_config, cdev);
+       gpio_set_value(led_dev->gpio, value);
+}
+
+static int omap_led_probe(struct platform_device *dev)
+{
+       struct omap_led_platform_data *pdata = dev->dev.platform_data;
+       struct omap_led_config *leds = pdata->leds;
+       int i, ret = 0;
+
+       for (i = 0; ret >= 0 && i < pdata->nr_leds; i++) {
+               ret = gpio_request(leds[i].gpio, leds[i].cdev.name);
+               if (ret < 0)
+                       break;
+               gpio_direction_output(leds[i].gpio, 0);
+               if (!leds[i].cdev.brightness_set)
+                       leds[i].cdev.brightness_set = omap_set_led_gpio;
+
+               ret = led_classdev_register(&dev->dev, &leds[i].cdev);
+       }
+
+       if (ret < 0 && i > 1) {
+               for (i = i - 2; i >= 0; i--) {
+                       led_classdev_unregister(&leds[i].cdev);
+                       gpio_free(leds[i].gpio);
+               }
+       }
+
+       return ret;
+}
+
+static int omap_led_remove(struct platform_device *dev)
+{
+       struct omap_led_platform_data *pdata = dev->dev.platform_data;
+       struct omap_led_config *leds = pdata->leds;
+       int i;
+
+       for (i = 0; i < pdata->nr_leds; i++) {
+               led_classdev_unregister(&leds[i].cdev);
+               gpio_free(leds[i].gpio);
+       }
+
+       return 0;
+}
+
+#ifdef CONFIG_PM
+static int omap_led_suspend(struct platform_device *dev, pm_message_t state)
+{
+       struct omap_led_platform_data *pdata = dev->dev.platform_data;
+       struct omap_led_config *leds = pdata->leds;
+       int i;
+
+       for (i = 0; i < pdata->nr_leds; i++)
+               led_classdev_suspend(&leds[i].cdev);
+
+       return 0;
+}
+
+static int omap_led_resume(struct platform_device *dev)
+{
+       struct omap_led_platform_data *pdata = dev->dev.platform_data;
+       struct omap_led_config *leds = pdata->leds;
+       int i;
+
+       for (i = 0; i < pdata->nr_leds; i++)
+               led_classdev_resume(&leds[i].cdev);
+
+       return 0;
+}
+#else
+#define omap_led_suspend       NULL
+#define omap_led_resume                NULL
+#endif
+
+static struct platform_driver omap_led_driver = {
+       .probe          = omap_led_probe,
+       .remove         = omap_led_remove,
+       .suspend        = omap_led_suspend,
+       .resume         = omap_led_resume,
+       .driver         = {
+               .name           = "omap-led",
+               .owner          = THIS_MODULE,
+       },
+};
+
+static int __init omap_led_init(void)
+{
+       return platform_driver_register(&omap_led_driver);
+}
+
+static void __exit omap_led_exit(void)
+{
+       platform_driver_unregister(&omap_led_driver);
+}
+
+module_init(omap_led_init);
+module_exit(omap_led_exit);
+
+MODULE_AUTHOR("Kyungmin Park<kyungmin.park@samsung.com>");
+MODULE_DESCRIPTION("OMAP LED driver");
+MODULE_LICENSE("GPL");