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authorlars <lars@3c298f89-4303-0410-b956-a3cf2f4a3e73>2009-05-18 17:55:41 +0000
committerlars <lars@3c298f89-4303-0410-b956-a3cf2f4a3e73>2009-05-18 17:55:41 +0000
commitfb189822fcab111e55d1c7e83c482dc2c144500a (patch)
treedd10e61f382ace3afbe40af3af8238757cf5e3d0 /target/linux/s3c24xx/files-2.6.30/drivers/leds/leds-gta02.c
parentc5f7c391b56bb88e21895f0fc9310cd0919e8d0c (diff)
[s3c24xx] bump to 2.6.30-rc6
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15918 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/s3c24xx/files-2.6.30/drivers/leds/leds-gta02.c')
-rw-r--r--target/linux/s3c24xx/files-2.6.30/drivers/leds/leds-gta02.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/leds/leds-gta02.c b/target/linux/s3c24xx/files-2.6.30/drivers/leds/leds-gta02.c
new file mode 100644
index 000000000..1d65eeaf3
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.30/drivers/leds/leds-gta02.c
@@ -0,0 +1,179 @@
+/*
+ * LED driver for the Openmoko GTA02 GSM phone
+ *
+ * (C) 2006-2008 by Openmoko, Inc.
+ * Author: Harald Welte <laforge@openmoko.org>
+ * All rights reserved.
+ *
+ * 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 <mach/hardware.h>
+#include <asm/mach-types.h>
+#include <mach/gta02.h>
+#include <plat/regs-timer.h>
+#include <linux/gta02-shadow.h>
+
+#define MAX_LEDS 3
+#define COUNTER 256
+
+struct gta02_led_priv
+{
+ spinlock_t lock;
+ struct led_classdev cdev;
+ unsigned int gpio;
+};
+
+struct gta02_led_bundle
+{
+ int num_leds;
+ struct gta02_led_priv led[MAX_LEDS];
+};
+
+static inline struct gta02_led_priv *to_priv(struct led_classdev *led_cdev)
+{
+ return container_of(led_cdev, struct gta02_led_priv, cdev);
+}
+
+static inline struct gta02_led_bundle *to_bundle(struct led_classdev *led_cdev)
+{
+ return dev_get_drvdata(led_cdev->dev->parent);
+}
+
+static void gta02led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ unsigned long flags;
+ struct gta02_led_priv *lp = to_priv(led_cdev);
+
+ spin_lock_irqsave(&lp->lock, flags);
+ gta02_gpb_setpin(lp->gpio, value ? 1 : 0);
+ spin_unlock_irqrestore(&lp->lock, flags);
+}
+
+#ifdef CONFIG_PM
+static int gta02led_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < bundle->num_leds; i++)
+ led_classdev_suspend(&bundle->led[i].cdev);
+
+ return 0;
+}
+
+static int gta02led_resume(struct platform_device *pdev)
+{
+ struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < bundle->num_leds; i++)
+ led_classdev_resume(&bundle->led[i].cdev);
+
+ return 0;
+}
+#endif
+
+static int __init gta02led_probe(struct platform_device *pdev)
+{
+ int i, rc;
+ struct gta02_led_bundle *bundle;
+
+ if (!machine_is_neo1973_gta02())
+ return -EIO;
+
+ bundle = kzalloc(sizeof(struct gta02_led_bundle), GFP_KERNEL);
+ if (!bundle)
+ return -ENOMEM;
+ platform_set_drvdata(pdev, bundle);
+
+ for (i = 0; i < pdev->num_resources; i++) {
+ struct gta02_led_priv *lp;
+ struct resource *r;
+
+ if (i >= MAX_LEDS)
+ break;
+
+ r = platform_get_resource(pdev, 0, i);
+ if (!r || !r->start || !r->name)
+ continue;
+
+ lp = &bundle->led[i];
+
+ lp->gpio = r->start;
+ lp->cdev.name = r->name;
+ lp->cdev.brightness_set = gta02led_set;
+
+ switch (lp->gpio) {
+ case S3C2410_GPB0:
+ case S3C2410_GPB1:
+ case S3C2410_GPB2:
+ s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPIO_OUTPUT);
+ gta02_gpb_add_shadow_gpio(lp->gpio);
+ break;
+ default:
+ break;
+ }
+
+ spin_lock_init(&lp->lock);
+ rc = led_classdev_register(&pdev->dev, &lp->cdev);
+ }
+
+ bundle->num_leds = i;
+
+ return 0;
+}
+
+static int gta02led_remove(struct platform_device *pdev)
+{
+ struct gta02_led_bundle *bundle = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < bundle->num_leds; i++) {
+ struct gta02_led_priv *lp = &bundle->led[i];
+ gta02led_set(&lp->cdev, 0);
+ led_classdev_unregister(&lp->cdev);
+ }
+
+ platform_set_drvdata(pdev, NULL);
+ kfree(bundle);
+
+ return 0;
+}
+
+static struct platform_driver gta02led_driver = {
+ .probe = gta02led_probe,
+ .remove = gta02led_remove,
+#ifdef CONFIG_PM
+ .suspend = gta02led_suspend,
+ .resume = gta02led_resume,
+#endif
+ .driver = {
+ .name = "gta02-led",
+ },
+};
+
+static int __init gta02led_init(void)
+{
+ return platform_driver_register(&gta02led_driver);
+}
+
+static void __exit gta02led_exit(void)
+{
+ platform_driver_unregister(&gta02led_driver);
+}
+
+module_init(gta02led_init);
+module_exit(gta02led_exit);
+
+MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
+MODULE_DESCRIPTION("Openmoko GTA02 LED driver");
+MODULE_LICENSE("GPL");