1 /* 2 * $Id: maplemouse.c,v 1.2 2004/03/22 01:18:15 lethal Exp $ 3 * SEGA Dreamcast mouse driver 4 * Based on drivers/usb/usbmouse.c 5 */ 6 7 #include <linux/kernel.h> 8 #include <linux/slab.h> 9 #include <linux/input.h> 10 #include <linux/module.h> 11 #include <linux/init.h> 12 #include <linux/timer.h> 13 #include <linux/maple.h> 14 15 MODULE_AUTHOR("YAEGASHI Takeshi <t@keshi.org>"); 16 MODULE_DESCRIPTION("SEGA Dreamcast mouse driver"); 17 18 static void dc_mouse_callback(struct mapleq *mq) 19 { 20 int buttons, relx, rely, relz; 21 struct maple_device *mapledev = mq->dev; 22 struct input_dev *dev = mapledev->private_data; 23 unsigned char *res = mq->recvbuf; 24 25 buttons = ~res[8]; 26 relx = *(unsigned short *)(res + 12) - 512; 27 rely = *(unsigned short *)(res + 14) - 512; 28 relz = *(unsigned short *)(res + 16) - 512; 29 30 input_report_key(dev, BTN_LEFT, buttons & 4); 31 input_report_key(dev, BTN_MIDDLE, buttons & 9); 32 input_report_key(dev, BTN_RIGHT, buttons & 2); 33 input_report_rel(dev, REL_X, relx); 34 input_report_rel(dev, REL_Y, rely); 35 input_report_rel(dev, REL_WHEEL, relz); 36 input_sync(dev); 37 } 38 39 static int dc_mouse_connect(struct maple_device *dev) 40 { 41 unsigned long data = be32_to_cpu(dev->devinfo.function_data[0]); 42 struct input_dev *input_dev; 43 44 if (!(input_dev = kmalloc(sizeof(struct input_dev), GFP_KERNEL))) 45 return -1; 46 47 dev->private_data = input_dev; 48 49 memset(input_dev, 0, sizeof(struct dc_mouse)); 50 init_input_dev(input_dev); 51 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL); 52 input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE); 53 input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL); 54 55 input_dev->name = dev->product_name; 56 input_dev->id.bustype = BUS_MAPLE; 57 58 input_register_device(input_dev); 59 60 maple_getcond_callback(dev, dc_mouse_callback, 1, MAPLE_FUNC_MOUSE); 61 62 printk(KERN_INFO "input: mouse(0x%lx): %s\n", data, input_dev->name); 63 64 return 0; 65 } 66 67 68 static void dc_mouse_disconnect(struct maple_device *dev) 69 { 70 struct input_dev *input_dev = dev->private_data; 71 72 input_unregister_device(input_dev); 73 kfree(input_dev); 74 } 75 76 77 static struct maple_driver dc_mouse_driver = { 78 .function = MAPLE_FUNC_MOUSE, 79 .name = "Dreamcast mouse", 80 .connect = dc_mouse_connect, 81 .disconnect = dc_mouse_disconnect, 82 }; 83 84 85 static int __init dc_mouse_init(void) 86 { 87 maple_register_driver(&dc_mouse_driver); 88 return 0; 89 } 90 91 92 static void __exit dc_mouse_exit(void) 93 { 94 maple_unregister_driver(&dc_mouse_driver); 95 } 96 97 98 module_init(dc_mouse_init); 99 module_exit(dc_mouse_exit); 100 101 /* 102 * Local variables: 103 * c-basic-offset: 8 104 * End: 105 */ 106