[adm5120] replace led driver, and resync kernel config

[openwrt/svn-archive/archive.git] / target / linux / adm5120-2.6 / files / drivers / leds / leds-gpio.c

diff --git a/target/linux/adm5120-2.6/files/drivers/leds/leds-gpio.c b/target/linux/adm5120-2.6/files/drivers/leds/leds-gpio.c
new file mode 100755 (executable)
index 0000000..7ae1432
--- /dev/null
+++ b/target/linux/adm5120-2.6/files/drivers/leds/leds-gpio.c
@@ -0,0 +1,209 @@
+/*
+ *  $Id$
+ *
+ *  Driver for LEDs connected to GPIO lines
+ *
+ *  Copyright (C) 2007 OpenWrt.org
+ *  Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
+ *
+ *  This file was derived from:
+ *    /drivers/led/leds-s3c24xx.c
+ *    (c) 2006 Simtec Electronics, Ben Dooks <ben@simtec.co.uk>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the
+ *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+
+#include <linux/gpio_leds.h>
+
+#include <asm/io.h>
+#include <asm/gpio.h>
+
+#define DRV_NAME "gpio-led"
+#define DRV_DESC "GPIO LEDs driver"
+
+struct gpio_led_device {
+       struct led_classdev cdev;
+       struct gpio_led_platform_data *pdata;
+};
+
+static inline struct gpio_led_device *pdev_to_led(struct platform_device *dev)
+{
+       return platform_get_drvdata(dev);
+}
+
+static inline struct gpio_led_device *class_to_led(struct led_classdev *led_cdev)
+{
+       return container_of(led_cdev, struct gpio_led_device, cdev);
+}
+
+static void gpio_led_set(struct led_classdev *led_cdev,
+                           enum led_brightness brightness)
+{
+       struct gpio_led_device *led;
+       struct gpio_led_platform_data *pdata;
+
+       led = class_to_led(led_cdev);
+       pdata = led->pdata;
+
+       switch (brightness) {
+       case LED_OFF:
+               gpio_direction_output(pdata->gpio, pdata->value_off);
+               break;
+       default:
+               gpio_direction_output(pdata->gpio, pdata->value_on);
+               break;
+       }
+}
+
+static int __devinit gpio_led_probe(struct platform_device *dev)
+{
+       struct gpio_led_platform_data *pdata;
+       struct gpio_led_device *led;
+       int ret;
+
+       pdata = dev->dev.platform_data;
+       if (pdata == NULL) {
+               dev_err(&dev->dev, "no platform data, id=%d\n", dev->id);
+               ret = -EINVAL;
+               goto err;
+       }
+
+       if (pdata->name == NULL) {
+               dev_err(&dev->dev, "no led name specified\n");
+               ret = -EINVAL;
+               goto err;
+       }
+
+       ret = gpio_request(pdata->gpio, pdata->name);
+       if (ret) {
+               dev_err(&dev->dev, "gpio_request failed\n");
+               goto err;
+       }
+
+       led = kzalloc(sizeof(*led), GFP_KERNEL);
+       if (led == NULL) {
+               dev_err(&dev->dev, "no memory for device");
+               ret = -ENOMEM;
+               goto err_free_gpio;
+       }
+
+       platform_set_drvdata(dev, led);
+       led->pdata = pdata;
+       led->cdev.name = pdata->name;
+       led->cdev.brightness_set = gpio_led_set;
+#ifdef CONFIG_LEDS_TRIGGERS
+       led->cdev.default_trigger = pdata->trigger;
+#endif
+
+       ret = led_classdev_register(&dev->dev, &led->cdev);
+       if (ret < 0) {
+               dev_err(&dev->dev, "led_classdev_register failed");
+               goto err_free_led;
+       }
+
+       return 0;
+
+err_free_led:
+       kfree(led);
+err_free_gpio:
+       gpio_free(pdata->gpio);
+err:
+       return ret;
+}
+
+static int __devexit gpio_led_remove(struct platform_device *dev)
+{
+       struct gpio_led_device *led;
+       struct gpio_led_platform_data *pdata;
+
+       pdata = dev->dev.platform_data;
+
+       led = pdev_to_led(dev);
+       led_classdev_unregister(&led->cdev);
+       kfree(led);
+
+       gpio_free(pdata->gpio);
+
+       return 0;
+}
+
+#ifdef CONFIG_PM
+static int gpio_led_suspend(struct platform_device *dev,
+               pm_message_t state)
+{
+       struct gpio_led_device *led;
+
+       led = pdev_to_led(dev);
+       led_classdev_suspend(&led->cdev);
+
+       return 0;
+}
+
+static int gpio_led_resume(struct platform_device *dev)
+{
+       struct gpio_led_device *led;
+
+       led = pdev_to_led(dev);
+       led_classdev_resume(&led->cdev);
+
+       return 0;
+}
+#endif /* CONFIG_PM */
+
+static struct platform_driver gpio_led_driver = {
+       .probe          = gpio_led_probe,
+       .remove         = __devexit_p(gpio_led_remove),
+#ifdef CONFIG_PM
+       .suspend        = gpio_led_suspend,
+       .resume         = gpio_led_resume,
+#endif
+       .driver         = {
+               .name           = DRV_NAME,
+               .owner          = THIS_MODULE,
+       },
+};
+
+static int __init gpio_led_init(void)
+{
+       int ret;
+
+       ret = platform_driver_register(&gpio_led_driver);
+       if (ret)
+               printk(KERN_ALERT DRV_DESC " register failed\n");
+       else
+               printk(KERN_INFO DRV_DESC " registered\n");
+
+       return ret;
+}
+
+static void __exit gpio_led_exit(void)
+{
+       platform_driver_unregister(&gpio_led_driver);
+}
+
+module_init(gpio_led_init);
+module_exit(gpio_led_exit);
+
+MODULE_AUTHOR("Gabor Juhos <juhosg@freemail.hu>");
+MODULE_DESCRIPTION(DRV_DESC);
+MODULE_LICENSE("GPL");