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Date: Sun, 24 Feb 2008 13:51:26 +0000
From: Adrian McMenamin <adrian@...golddream.dyndns.info>
To: Paul Mundt <lethal@...ux-sh.org>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>,
linux-sh <linux-sh@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 3/3] input: support maple mouse on Dreamcast
input: add support for maple mouse on Dreamcast
Signed-off-by: Adrian McMenamin <adrian@...en.demon.co.uk>
---
diff --git a/drivers/input/mouse/maplemouse.c b/drivers/input/mouse/maplemouse.c
new file mode 100644
index 0000000..08cfb6f
--- /dev/null
+++ b/drivers/input/mouse/maplemouse.c
@@ -0,0 +1,148 @@
+/*
+ * SEGA Dreamcast mouse driver
+ * Based on drivers/usb/usbmouse.c
+ *
+ * Copyright Yaegashi Takeshi, 2001
+ * Porting to 2.6 and other fixes
+ * copyright, Adrian McMenamin, 2008
+ */
+
+#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>
+#include <asm/mach/maple.h>
+
+MODULE_AUTHOR("YAEGASHI Takeshi <t@...hi.org>");
+MODULE_DESCRIPTION("SEGA Dreamcast mouse driver");
+MODULE_LICENSE("GPL");
+
+static void dc_mouse_callback(struct mapleq *mq)
+{
+ int buttons, relx, rely, relz;
+ struct maple_device *mapledev = mq->dev;
+ struct input_dev *dev = mapledev->private_data;
+ unsigned char *res = mq->recvbuf;
+
+ 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_connect(struct maple_device *mdev)
+{
+ struct input_dev *input_dev;
+ int error;
+
+ input_dev = input_allocate_device();
+ if (!input_dev) {
+ error = ENOMEM;
+ goto fail_nomem;
+ }
+ mdev->private_data = input_dev;
+
+ 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->name = mdev->product_name;
+ input_dev->id.bustype = BUS_HOST;
+
+ error = input_register_device(input_dev);
+ if (error)
+ goto fail_regdev;
+
+ maple_getcond_callback(mdev, dc_mouse_callback, HZ/50, MAPLE_FUNC_MOUSE);
+
+ return error;
+
+fail_regdev:
+ input_free_device(input_dev);
+fail_nomem:
+ return error;
+}
+
+static void dc_mouse_disconnect(struct maple_device *dev)
+{
+ struct input_dev *input_dev = dev->private_data;
+
+ input_unregister_device(input_dev);
+ kfree(input_dev);
+}
+
+/* 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;
+
+ error = dc_mouse_connect(mdev);
+ if (error)
+ return error;
+
+ mdev->driver = mdrv;
+
+ return 0;
+}
+
+
+static int remove_maple_mouse(struct device *dev)
+{
+ struct maple_device *mdev = to_maple_dev(dev);
+
+ dc_mouse_disconnect(mdev);
+ return 0;
+}
+
+static struct maple_driver dc_mouse_driver = {
+ .function = MAPLE_FUNC_MOUSE,
+ .connect = dc_mouse_connect,
+ .disconnect = dc_mouse_disconnect,
+ .drv = {
+ .name = "Dreamcast_mouse",
+ .probe = probe_maple_mouse,
+ .remove = remove_maple_mouse,
+ },
+};
+
+static int unplug_maple_mouse(struct device *dev, void *ignored)
+{
+ /* Please DO NOT really unplug your mouse */
+ struct maple_device *mdev;
+
+ mdev = to_maple_dev(dev);
+ if ((mdev->function & MAPLE_FUNC_MOUSE)
+ && (mdev->driver == &dc_mouse_driver))
+ remove_maple_mouse(dev);
+
+ return 0;
+}
+
+static int __init dc_mouse_init(void)
+{
+ maple_driver_register(&dc_mouse_driver.drv);
+ return 0;
+}
+
+static void __exit dc_mouse_exit(void)
+{
+ bus_for_each_dev(&maple_bus_type, NULL, NULL, unplug_maple_mouse);
+ driver_unregister(&dc_mouse_driver.drv);
+}
+
+module_init(dc_mouse_init);
+module_exit(dc_mouse_exit);
--
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