Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / input / mouse / maplemouse.c

diff --git a/kernel/drivers/input/mouse/maplemouse.c b/kernel/drivers/input/mouse/maplemouse.c
new file mode 100644 (file)
index 0000000..0a60717
--- /dev/null
+++ b/kernel/drivers/input/mouse/maplemouse.c
@@ -0,0 +1,150 @@
+/*
+ *     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_set_drvdata(input_dev, mse);
+       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);