Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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 | */ |