replace led driver, and resync kernel config

SVN-Revision: 7744

1 files changed, 209 insertions, 0 deletions

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
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");