Input: pcspkr - register with driver core as a platfrom device (59317747) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/input/misc/pcspkr.c

+80 −6

Original line number	Diff line number	Diff line
		@@ -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)
		{
		/* 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);