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 struct dc_mouse { 19 struct input_dev dev; 20 int open; 21 }; 22 23 24 static void dc_mouse_callback(struct mapleq *mq) 25 { 26 int buttons, relx, rely, relz; 27 struct maple_device *mapledev = mq->dev; 28 struct dc_mouse *mouse = mapledev->private_data; 29 struct input_dev *dev = &mouse->dev; 30 unsigned char *res = mq->recvbuf; 31 32 buttons = ~res[8]; 33 relx=*(unsigned short *)(res+12)-512; 34 rely=*(unsigned short *)(res+14)-512; 35 relz=*(unsigned short *)(res+16)-512; 36 37 input_report_key(dev, BTN_LEFT, buttons&4); 38 input_report_key(dev, BTN_MIDDLE, buttons&9); 39 input_report_key(dev, BTN_RIGHT, buttons&2); 40 input_report_rel(dev, REL_X, relx); 41 input_report_rel(dev, REL_Y, rely); 42 input_report_rel(dev, REL_WHEEL, relz); 43 input_sync(dev); 44 } 45 46 47 static int dc_mouse_open(struct input_dev *dev) 48 { 49 struct dc_mouse *mouse = dev->private; 50 mouse->open++; 51 return 0; 52 } 53 54 55 static void dc_mouse_close(struct input_dev *dev) 56 { 57 struct dc_mouse *mouse = dev->private; 58 mouse->open--; 59 } 60 61 62 static int dc_mouse_connect(struct maple_device *dev) 63 { 64 unsigned long data = be32_to_cpu(dev->devinfo.function_data[0]); 65 struct dc_mouse *mouse; 66 67 if (!(mouse = kmalloc(sizeof(struct dc_mouse), GFP_KERNEL))) 68 return -1; 69 memset(mouse, 0, sizeof(struct dc_mouse)); 70 71 dev->private_data = mouse; 72 73 mouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL); 74 mouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE); 75 mouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL); 76 77 init_input_dev(&mouse->dev); 78 79 mouse->dev.private = mouse; 80 mouse->dev.open = dc_mouse_open; 81 mouse->dev.close = dc_mouse_close; 82 mouse->dev.event = NULL; 83 84 mouse->dev.name = dev->product_name; 85 mouse->dev.id.bustype = BUS_MAPLE; 86 87 input_register_device(&mouse->dev); 88 89 maple_getcond_callback(dev, dc_mouse_callback, 1, MAPLE_FUNC_MOUSE); 90 91 printk(KERN_INFO "input: mouse(0x%lx): %s\n", data, mouse->dev.name); 92 93 return 0; 94 } 95 96 97 static void dc_mouse_disconnect(struct maple_device *dev) 98 { 99 struct dc_mouse *mouse = dev->private_data; 100 101 input_unregister_device(&mouse->dev); 102 kfree(mouse); 103 } 104 105 106 static struct maple_driver dc_mouse_driver = { 107 .function = MAPLE_FUNC_MOUSE, 108 .name = "Dreamcast mouse", 109 .connect = dc_mouse_connect, 110 .disconnect = dc_mouse_disconnect, 111 }; 112 113 114 static int __init dc_mouse_init(void) 115 { 116 maple_register_driver(&dc_mouse_driver); 117 return 0; 118 } 119 120 121 static void __exit dc_mouse_exit(void) 122 { 123 maple_unregister_driver(&dc_mouse_driver); 124 } 125 126 127 module_init(dc_mouse_init); 128 module_exit(dc_mouse_exit); 129 130 /* 131 * Local variables: 132 * c-basic-offset: 8 133 * End: 134 */ 135