[mirror_ubuntu-bionic-kernel.git] / drivers / input / mouse / maplemouse.c

/*
 *	SEGA Dreamcast mouse driver
 *	Based on drivers/usb/usbmouse.c
 *
 *	Copyright (c) Yaegashi Takeshi, 2001
 *	Copyright (c) Adrian McMenamin, 2008 - 2009
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/maple.h>

MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
MODULE_DESCRIPTION("SEGA Dreamcast mouse driver");
MODULE_LICENSE("GPL");

struct dc_mouse {
	struct input_dev *dev;
	struct maple_device *mdev;
};

static void dc_mouse_callback(struct mapleq *mq)
{
	int buttons, relx, rely, relz;
	struct maple_device *mapledev = mq->dev;
	struct dc_mouse *mse = maple_get_drvdata(mapledev);
	struct input_dev *dev = mse->dev;
	unsigned char *res = mq->recvbuf->buf;

	buttons = ~res[8];
	relx = *(unsigned short *)(res + 12) - 512;
	rely = *(unsigned short *)(res + 14) - 512;
	relz = *(unsigned short *)(res + 16) - 512;

	input_report_key(dev, BTN_LEFT,   buttons & 4);
	input_report_key(dev, BTN_MIDDLE, buttons & 9);
	input_report_key(dev, BTN_RIGHT,  buttons & 2);
	input_report_rel(dev, REL_X,      relx);
	input_report_rel(dev, REL_Y,      rely);
	input_report_rel(dev, REL_WHEEL,  relz);
	input_sync(dev);
}

static int dc_mouse_open(struct input_dev *dev)
{
	struct dc_mouse *mse = maple_get_drvdata(to_maple_dev(&dev->dev));

	maple_getcond_callback(mse->mdev, dc_mouse_callback, HZ/50,
		MAPLE_FUNC_MOUSE);

	return 0;
}

static void dc_mouse_close(struct input_dev *dev)
{
	struct dc_mouse *mse = maple_get_drvdata(to_maple_dev(&dev->dev));

	maple_getcond_callback(mse->mdev, dc_mouse_callback, 0,
		MAPLE_FUNC_MOUSE);
}

/* allow the mouse to be used */
static int probe_maple_mouse(struct device *dev)
{
	struct maple_device *mdev = to_maple_dev(dev);
	struct maple_driver *mdrv = to_maple_driver(dev->driver);
	int error;
	struct input_dev *input_dev;
	struct dc_mouse *mse;

	mse = kzalloc(sizeof(struct dc_mouse), GFP_KERNEL);
	if (!mse) {
		error = -ENOMEM;
		goto fail;
	}

	input_dev = input_allocate_device();
	if (!input_dev) {
		error = -ENOMEM;
		goto fail_nomem;
	}

	mse->dev = input_dev;
	mse->mdev = mdev;

	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
	input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
		BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
	input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) |
		BIT_MASK(REL_WHEEL);
	input_dev->open = dc_mouse_open;
	input_dev->close = dc_mouse_close;
	input_dev->name = mdev->product_name;
	input_dev->id.bustype = BUS_HOST;
	error =	input_register_device(input_dev);
	if (error)
		goto fail_register;

	mdev->driver = mdrv;
	maple_set_drvdata(mdev, mse);

	return error;

fail_register:
	input_free_device(input_dev);
fail_nomem:
	kfree(mse);
fail:
	return error;
}

static int remove_maple_mouse(struct device *dev)
{
	struct maple_device *mdev = to_maple_dev(dev);
	struct dc_mouse *mse = maple_get_drvdata(mdev);

	mdev->callback = NULL;
	input_unregister_device(mse->dev);
	maple_set_drvdata(mdev, NULL);
	kfree(mse);

	return 0;
}

static struct maple_driver dc_mouse_driver = {
	.function =	MAPLE_FUNC_MOUSE,
	.drv = {
		.name = "Dreamcast_mouse",
		.probe = probe_maple_mouse,
		.remove = remove_maple_mouse,
	},
};

static int __init dc_mouse_init(void)
{
	return maple_driver_register(&dc_mouse_driver);
}

static void __exit dc_mouse_exit(void)
{
	maple_driver_unregister(&dc_mouse_driver);
}

module_init(dc_mouse_init);
module_exit(dc_mouse_exit);
Commit	Line	Data
03dd5e1b AM	1	/*
	2	* SEGA Dreamcast mouse driver
	3	* Based on drivers/usb/usbmouse.c
	4	*
6b348085 AM	5	* Copyright (c) Yaegashi Takeshi, 2001
6b348085 AM	6	* Copyright (c) Adrian McMenamin, 2008 - 2009
03dd5e1b AM	7	*/
	8
	9	#include <linux/kernel.h>
	10	#include <linux/slab.h>
	11	#include <linux/input.h>
	12	#include <linux/module.h>
	13	#include <linux/init.h>
	14	#include <linux/timer.h>
	15	#include <linux/maple.h>
	16
	17	MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
	18	MODULE_DESCRIPTION("SEGA Dreamcast mouse driver");
	19	MODULE_LICENSE("GPL");
	20
	21	struct dc_mouse {
	22	struct input_dev *dev;
	23	struct maple_device *mdev;
	24	};
	25
	26	static void dc_mouse_callback(struct mapleq *mq)
	27	{
	28	int buttons, relx, rely, relz;
	29	struct maple_device *mapledev = mq->dev;
	30	struct dc_mouse *mse = maple_get_drvdata(mapledev);
	31	struct input_dev *dev = mse->dev;
6b348085	32	unsigned char *res = mq->recvbuf->buf;
03dd5e1b AM	33
	34	buttons = ~res[8];
	35	relx = (unsigned short )(res + 12) - 512;
	36	rely = (unsigned short )(res + 14) - 512;
	37	relz = (unsigned short )(res + 16) - 512;
	38
	39	input_report_key(dev, BTN_LEFT, buttons & 4);
	40	input_report_key(dev, BTN_MIDDLE, buttons & 9);
	41	input_report_key(dev, BTN_RIGHT, buttons & 2);
	42	input_report_rel(dev, REL_X, relx);
	43	input_report_rel(dev, REL_Y, rely);
	44	input_report_rel(dev, REL_WHEEL, relz);
	45	input_sync(dev);
	46	}
	47
	48	static int dc_mouse_open(struct input_dev *dev)
	49	{
6b348085	50	struct dc_mouse *mse = maple_get_drvdata(to_maple_dev(&dev->dev));
03dd5e1b AM	51
	52	maple_getcond_callback(mse->mdev, dc_mouse_callback, HZ/50,
	53	MAPLE_FUNC_MOUSE);
	54
	55	return 0;
	56	}
	57
	58	static void dc_mouse_close(struct input_dev *dev)
	59	{
6b348085	60	struct dc_mouse *mse = maple_get_drvdata(to_maple_dev(&dev->dev));
03dd5e1b AM	61
	62	maple_getcond_callback(mse->mdev, dc_mouse_callback, 0,
	63	MAPLE_FUNC_MOUSE);
	64	}
	65
6b348085	66	/* allow the mouse to be used */
5298cc4c	67	static int probe_maple_mouse(struct device *dev)
03dd5e1b AM	68	{
	69	struct maple_device *mdev = to_maple_dev(dev);
	70	struct maple_driver *mdrv = to_maple_driver(dev->driver);
6b348085	71	int error;
03dd5e1b AM	72	struct input_dev *input_dev;
03dd5e1b AM	73	struct dc_mouse *mse;
03dd5e1b AM	74
03dd5e1b AM	75	mse = kzalloc(sizeof(struct dc_mouse), GFP_KERNEL);
6b348085	76	if (!mse) {
03dd5e1b AM	77	error = -ENOMEM;
	78	goto fail;
	79	}
	80
6b348085 AM	81	input_dev = input_allocate_device();
	82	if (!input_dev) {
	83	error = -ENOMEM;
	84	goto fail_nomem;
	85	}
	86
03dd5e1b AM	87	mse->dev = input_dev;
	88	mse->mdev = mdev;
	89
03dd5e1b AM	90	input_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REL);
	91	input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) \|
	92	BIT_MASK(BTN_RIGHT) \| BIT_MASK(BTN_MIDDLE);
	93	input_dev->relbit[0] = BIT_MASK(REL_X) \| BIT_MASK(REL_Y) \|
	94	BIT_MASK(REL_WHEEL);
03dd5e1b AM	95	input_dev->open = dc_mouse_open;
03dd5e1b AM	96	input_dev->close = dc_mouse_close;
6b348085 AM	97	input_dev->name = mdev->product_name;
	98	input_dev->id.bustype = BUS_HOST;
	99	error = input_register_device(input_dev);
	100	if (error)
	101	goto fail_register;
03dd5e1b AM	102
	103	mdev->driver = mdrv;
	104	maple_set_drvdata(mdev, mse);
	105
6b348085	106	return error;
03dd5e1b	107
6b348085	108	fail_register:
03dd5e1b	109	input_free_device(input_dev);
6b348085	110	fail_nomem:
03dd5e1b	111	kfree(mse);
6b348085	112	fail:
03dd5e1b AM	113	return error;
	114	}
	115
e2619cf7	116	static int remove_maple_mouse(struct device *dev)
03dd5e1b AM	117	{
	118	struct maple_device *mdev = to_maple_dev(dev);
	119	struct dc_mouse *mse = maple_get_drvdata(mdev);
	120
	121	mdev->callback = NULL;
	122	input_unregister_device(mse->dev);
	123	maple_set_drvdata(mdev, NULL);
	124	kfree(mse);
	125
	126	return 0;
	127	}
	128
	129	static struct maple_driver dc_mouse_driver = {
	130	.function = MAPLE_FUNC_MOUSE,
	131	.drv = {
	132	.name = "Dreamcast_mouse",
	133	.probe = probe_maple_mouse,
1cb0aa88	134	.remove = remove_maple_mouse,
03dd5e1b AM	135	},
	136	};
	137
	138	static int __init dc_mouse_init(void)
	139	{
	140	return maple_driver_register(&dc_mouse_driver);
	141	}
	142
	143	static void __exit dc_mouse_exit(void)
	144	{
	145	maple_driver_unregister(&dc_mouse_driver);
	146	}
	147
	148	module_init(dc_mouse_init);
	149	module_exit(dc_mouse_exit);