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 }; 44 45 46 static void dc_scan_kbd(struct dc_kbd *kbd) 47 { 48 int i; 49 struct input_dev *dev = kbd->dev; 50 51 for (i = 0; i < 8; i++) 52 input_report_key(dev, dc_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1); 53 54 for (i = 2; i < 8; i++) { 55 56 if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == NULL) { 57 if (dc_kbd_keycode[kbd->old[i]]) 58 input_report_key(dev, dc_kbd_keycode[kbd->old[i]], 0); 59 else 60 printk("Unknown key (scancode %#x) released.", 61 kbd->old[i]); 62 } 63 64 if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) != NULL) { 65 if(dc_kbd_keycode[kbd->new[i]]) 66 input_report_key(dev, dc_kbd_keycode[kbd->new[i]], 1); 67 else 68 printk("Unknown key (scancode %#x) pressed.", 69 kbd->new[i]); 70 } 71 } 72 73 input_sync(dev); 74 75 memcpy(kbd->old, kbd->new, 8); 76 } 77 78 79 static void dc_kbd_callback(struct mapleq *mq) 80 { 81 struct maple_device *mapledev = mq->dev; 82 struct dc_kbd *kbd = mapledev->private_data; 83 unsigned long *buf = mq->recvbuf; 84 85 if (buf[1] == mapledev->function) { 86 memcpy(kbd->new, buf + 2, 8); 87 dc_scan_kbd(kbd); 88 } 89 } 90 91 static int dc_kbd_connect(struct maple_device *dev) 92 { 93 struct dc_kbd *kbd; 94 struct input_dev *input_dev; 95 unsigned long data = be32_to_cpu(dev->devinfo.function_data[0]); 96 int i; 97 98 dev->private_data = kbd = kzalloc(sizeof(struct dc_kbd), GFP_KERNEL); 99 input_dev = input_allocate_device(); 100 if (!kbd || !input_dev) { 101 kfree(kbd); 102 input_free_device(input_dev); 103 return -ENOMEM; 104 } 105 106 kbd->dev = input_dev; 107 108 input_dev->name = dev->product_name; 109 input_dev->id.bustype = BUS_MAPLE; 110 input_dev->private = kbd; 111 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); 112 for (i = 0; i < 255; i++) 113 set_bit(dc_kbd_keycode[i], input_dev->keybit); 114 clear_bit(0, input_dev->keybit); 115 116 input_register_device(kbd->dev); 117 118 maple_getcond_callback(dev, dc_kbd_callback, 1, MAPLE_FUNC_KEYBOARD); 119 return 0; 120 } 121 122 123 static void dc_kbd_disconnect(struct maple_device *dev) 124 { 125 struct dc_kbd *kbd = dev->private_data; 126 127 input_unregister_device(kbd->dev); 128 kfree(kbd); 129 } 130 131 132 static struct maple_driver dc_kbd_driver = { 133 .function = MAPLE_FUNC_KEYBOARD, 134 .name = "Dreamcast keyboard", 135 .connect = dc_kbd_connect, 136 .disconnect = dc_kbd_disconnect, 137 }; 138 139 140 static int __init dc_kbd_init(void) 141 { 142 maple_register_driver(&dc_kbd_driver); 143 return 0; 144 } 145 146 147 static void __exit dc_kbd_exit(void) 148 { 149 maple_unregister_driver(&dc_kbd_driver); 150 } 151 152 153 module_init(dc_kbd_init); 154 module_exit(dc_kbd_exit); 155 156 /* 157 * Local variables: 158 * c-basic-offset: 8 159 * End: 160 */ 161