Input: pcspkr - register with driver core as a platfrom device
Dmitry Torokhov [Wed, 21 Dec 2005 05:52:22 +0000 (00:52 -0500)]
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/misc/pcspkr.c

index 68ac97f..1ef477f 100644 (file)
@@ -16,6 +16,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/input.h>
+#include <linux/platform_device.h>
 #include <asm/8253pit.h>
 #include <asm/io.h>
 
@@ -23,8 +24,7 @@ MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
 MODULE_DESCRIPTION("PC Speaker beeper driver");
 MODULE_LICENSE("GPL");
 
-static struct input_dev *pcspkr_dev;
-
+static struct platform_device *pcspkr_platform_device;
 static DEFINE_SPINLOCK(i8253_beep_lock);
 
 static int pcspkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
@@ -64,8 +64,11 @@ static int pcspkr_event(struct input_dev *dev, unsigned int type, unsigned int c
        return 0;
 }
 
-static int __init pcspkr_init(void)
+static int __devinit pcspkr_probe(struct platform_device *dev)
 {
+       struct input_dev *pcspkr_dev;
+       int err;
+
        pcspkr_dev = input_allocate_device();
        if (!pcspkr_dev)
                return -ENOMEM;
@@ -76,22 +79,93 @@ static int __init pcspkr_init(void)
        pcspkr_dev->id.vendor = 0x001f;
        pcspkr_dev->id.product = 0x0001;
        pcspkr_dev->id.version = 0x0100;
+       pcspkr_dev->cdev.dev = &dev->dev;
 
        pcspkr_dev->evbit[0] = BIT(EV_SND);
        pcspkr_dev->sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE);
        pcspkr_dev->event = pcspkr_event;
 
-       input_register_device(pcspkr_dev);
+       err = input_register_device(pcspkr_dev);
+       if (err) {
+               input_free_device(pcspkr_dev);
+               return err;
+       }
+
+       platform_set_drvdata(dev, pcspkr_dev);
 
        return 0;
 }
 
-static void __exit pcspkr_exit(void)
+static int __devexit pcspkr_remove(struct platform_device *dev)
+{
+       struct input_dev *pcspkr_dev = platform_get_drvdata(dev);
+
+       input_unregister_device(pcspkr_dev);
+       platform_set_drvdata(dev, NULL);
+       /* turn off the speaker */
+       pcspkr_event(NULL, EV_SND, SND_BELL, 0);
+
+       return 0;
+}
+
+static int pcspkr_suspend(struct platform_device *dev, pm_message_t state)
+{
+       pcspkr_event(NULL, EV_SND, SND_BELL, 0);
+
+       return 0;
+}
+
+static void pcspkr_shutdown(struct platform_device *dev)
 {
-        input_unregister_device(pcspkr_dev);
        /* turn off the speaker */
        pcspkr_event(NULL, EV_SND, SND_BELL, 0);
 }
 
+static struct platform_driver pcspkr_platform_driver = {
+       .driver         = {
+               .name   = "pcspkr",
+               .owner  = THIS_MODULE,
+       },
+       .probe          = pcspkr_probe,
+       .remove         = __devexit_p(pcspkr_remove),
+       .suspend        = pcspkr_suspend,
+       .shutdown       = pcspkr_shutdown,
+};
+
+
+static int __init pcspkr_init(void)
+{
+       int err;
+
+       err = platform_driver_register(&pcspkr_platform_driver);
+       if (err)
+               return err;
+
+       pcspkr_platform_device = platform_device_alloc("pcspkr", -1);
+       if (!pcspkr_platform_device) {
+               err = -ENOMEM;
+               goto err_unregister_driver;
+       }
+
+       err = platform_device_add(pcspkr_platform_device);
+       if (err)
+               goto err_free_device;
+
+       return 0;
+
+ err_free_device:
+       platform_device_put(pcspkr_platform_device);
+ err_unregister_driver:
+       platform_driver_unregister(&pcspkr_platform_driver);
+
+       return err;
+}
+
+static void __exit pcspkr_exit(void)
+{
+       platform_device_unregister(pcspkr_platform_device);
+       platform_driver_unregister(&pcspkr_platform_driver);
+}
+
 module_init(pcspkr_init);
 module_exit(pcspkr_exit);