1 /* 2 * $Id: maple_keyb.c,v 1.4 2004/03/22 01:18:15 lethal Exp $ 3 * SEGA Dreamcast keyboard driver 4 * Based on drivers/usb/usbkbd.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 keyboard driver"); 17 MODULE_LICENSE("GPL"); 18 19 static unsigned char dc_kbd_keycode[256] = { 20 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, 21 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, 22 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, 23 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, 24 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, 25 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, 26 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, 27 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, 28 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0, 29 122,123, 90, 91, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 30 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 33 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 34 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, 35 150,158,159,128,136,177,178,176,142,152,173,140 36 }; 37 38 39 struct dc_kbd { 40 struct input_dev dev; 41 unsigned char new[8]; 42 unsigned char old[8]; 43 int open; 44 }; 45 46 47 static void dc_scan_kbd(struct dc_kbd *kbd) 48 { 49 int i; 50 struct input_dev *dev = &kbd->dev; 51 52 for(i=0; i<8; i++) 53 input_report_key(dev, 54 dc_kbd_keycode[i+224], 55 (kbd->new[0]>>i)&1); 56 57 for(i=2; i<8; i++) { 58 59 if(kbd->old[i]>3&&memscan(kbd->new+2, kbd->old[i], 6)==NULL) { 60 if(dc_kbd_keycode[kbd->old[i]]) 61 input_report_key(dev, 62 dc_kbd_keycode[kbd->old[i]], 63 0); 64 else 65 printk("Unknown key (scancode %#x) released.", 66 kbd->old[i]); 67 } 68 69 if(kbd->new[i]>3&&memscan(kbd->old+2, kbd->new[i], 6)!=NULL) { 70 if(dc_kbd_keycode[kbd->new[i]]) 71 input_report_key(dev, 72 dc_kbd_keycode[kbd->new[i]], 73 1); 74 else 75 printk("Unknown key (scancode %#x) pressed.", 76 kbd->new[i]); 77 } 78 } 79 80 input_sync(dev); 81 82 memcpy(kbd->old, kbd->new, 8); 83 } 84 85 86 static void dc_kbd_callback(struct mapleq *mq) 87 { 88 struct maple_device *mapledev = mq->dev; 89 struct dc_kbd *kbd = mapledev->private_data; 90 unsigned long *buf = mq->recvbuf; 91 92 if (buf[1] == mapledev->function) { 93 memcpy(kbd->new, buf+2, 8); 94 dc_scan_kbd(kbd); 95 } 96 } 97 98 99 static int dc_kbd_open(struct input_dev *dev) 100 { 101 struct dc_kbd *kbd = dev->private; 102 kbd->open++; 103 return 0; 104 } 105 106 107 static void dc_kbd_close(struct input_dev *dev) 108 { 109 struct dc_kbd *kbd = dev->private; 110 kbd->open--; 111 } 112 113 114 static int dc_kbd_connect(struct maple_device *dev) 115 { 116 int i; 117 unsigned long data = be32_to_cpu(dev->devinfo.function_data[0]); 118 struct dc_kbd *kbd; 119 120 if (!(kbd = kmalloc(sizeof(struct dc_kbd), GFP_KERNEL))) 121 return -1; 122 memset(kbd, 0, sizeof(struct dc_kbd)); 123 124 dev->private_data = kbd; 125 126 kbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP); 127 128 init_input_dev(&kbd->dev); 129 130 for (i=0; i<255; i++) 131 set_bit(dc_kbd_keycode[i], kbd->dev.keybit); 132 133 clear_bit(0, kbd->dev.keybit); 134 135 kbd->dev.private = kbd; 136 kbd->dev.open = dc_kbd_open; 137 kbd->dev.close = dc_kbd_close; 138 kbd->dev.event = NULL; 139 140 kbd->dev.name = dev->product_name; 141 kbd->dev.id.bustype = BUS_MAPLE; 142 143 input_register_device(&kbd->dev); 144 145 maple_getcond_callback(dev, dc_kbd_callback, 1, MAPLE_FUNC_KEYBOARD); 146 147 printk(KERN_INFO "input: keyboard(0x%lx): %s\n", data, kbd->dev.name); 148 149 return 0; 150 } 151 152 153 static void dc_kbd_disconnect(struct maple_device *dev) 154 { 155 struct dc_kbd *kbd = dev->private_data; 156 157 input_unregister_device(&kbd->dev); 158 kfree(kbd); 159 } 160 161 162 static struct maple_driver dc_kbd_driver = { 163 .function = MAPLE_FUNC_KEYBOARD, 164 .name = "Dreamcast keyboard", 165 .connect = dc_kbd_connect, 166 .disconnect = dc_kbd_disconnect, 167 }; 168 169 170 static int __init dc_kbd_init(void) 171 { 172 maple_register_driver(&dc_kbd_driver); 173 return 0; 174 } 175 176 177 static void __exit dc_kbd_exit(void) 178 { 179 maple_unregister_driver(&dc_kbd_driver); 180 } 181 182 183 module_init(dc_kbd_init); 184 module_exit(dc_kbd_exit); 185 186 /* 187 * Local variables: 188 * c-basic-offset: 8 189 * End: 190 */ 191