734 lines
18 KiB
C
Executable file
734 lines
18 KiB
C
Executable file
/*
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* Copyright (C) 2004 by Jan-Benedict Glaw <jbglaw@lug-owl.de>
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*/
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/*
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* LK keyboard driver for Linux, based on sunkbd.c (C) by Vojtech Pavlik
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*/
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/*
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* DEC LK201 and LK401 keyboard driver for Linux (primary for DECstations
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* and VAXstations, but can also be used on any standard RS232 with an
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* adaptor).
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*
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* DISCLAIMER: This works for _me_. If you break anything by using the
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* information given below, I will _not_ be liable!
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*
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* RJ10 pinout: To DE9: Or DB25:
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* 1 - RxD <----> Pin 3 (TxD) <-> Pin 2 (TxD)
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* 2 - GND <----> Pin 5 (GND) <-> Pin 7 (GND)
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* 4 - TxD <----> Pin 2 (RxD) <-> Pin 3 (RxD)
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* 3 - +12V (from HDD drive connector), DON'T connect to DE9 or DB25!!!
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*
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* Pin numbers for DE9 and DB25 are noted on the plug (quite small:). For
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* RJ10, it's like this:
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*
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* __=__ Hold the plug in front of you, cable downwards,
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* /___/| nose is hidden behind the plug. Now, pin 1 is at
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* |1234|| the left side, pin 4 at the right and 2 and 3 are
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* |IIII|| in between, of course:)
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* | ||
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* |____|/
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* || So the adaptor consists of three connected cables
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* || for data transmission (RxD and TxD) and signal ground.
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* Additionally, you have to get +12V from somewhere.
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* Most easily, you'll get that from a floppy or HDD power connector.
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* It's the yellow cable there (black is ground and red is +5V).
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*
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* The keyboard and all the commands it understands are documented in
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* "VCB02 Video Subsystem - Technical Manual", EK-104AA-TM-001. This
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* document is LK201 specific, but LK401 is mostly compatible. It comes
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* up in LK201 mode and doesn't report any of the additional keys it
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* has. These need to be switched on with the LK_CMD_ENABLE_LK401
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* command. You'll find this document (scanned .pdf file) on MANX,
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* a search engine specific to DEC documentation. Try
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* http://www.vt100.net/manx/details?pn=EK-104AA-TM-001;id=21;cp=1
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/input.h>
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#include <linux/serio.h>
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#include <linux/workqueue.h>
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#define DRIVER_DESC "LK keyboard driver"
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MODULE_AUTHOR("Jan-Benedict Glaw <jbglaw@lug-owl.de>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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/*
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* Known parameters:
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* bell_volume
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* keyclick_volume
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* ctrlclick_volume
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*
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* Please notice that there's not yet an API to set these at runtime.
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*/
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static int bell_volume = 100; /* % */
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module_param(bell_volume, int, 0);
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MODULE_PARM_DESC(bell_volume, "Bell volume (in %). default is 100%");
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static int keyclick_volume = 100; /* % */
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module_param(keyclick_volume, int, 0);
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MODULE_PARM_DESC(keyclick_volume, "Keyclick volume (in %), default is 100%");
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static int ctrlclick_volume = 100; /* % */
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module_param(ctrlclick_volume, int, 0);
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MODULE_PARM_DESC(ctrlclick_volume, "Ctrlclick volume (in %), default is 100%");
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static int lk201_compose_is_alt;
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module_param(lk201_compose_is_alt, int, 0);
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MODULE_PARM_DESC(lk201_compose_is_alt,
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"If set non-zero, LK201' Compose key will act as an Alt key");
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#undef LKKBD_DEBUG
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#ifdef LKKBD_DEBUG
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#define DBG(x...) printk(x)
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#else
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#define DBG(x...) do {} while (0)
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#endif
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/* LED control */
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#define LK_LED_WAIT 0x81
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#define LK_LED_COMPOSE 0x82
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#define LK_LED_SHIFTLOCK 0x84
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#define LK_LED_SCROLLLOCK 0x88
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#define LK_CMD_LED_ON 0x13
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#define LK_CMD_LED_OFF 0x11
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/* Mode control */
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#define LK_MODE_DOWN 0x80
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#define LK_MODE_AUTODOWN 0x82
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#define LK_MODE_UPDOWN 0x86
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#define LK_CMD_SET_MODE(mode, div) ((mode) | ((div) << 3))
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/* Misc commands */
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#define LK_CMD_ENABLE_KEYCLICK 0x1b
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#define LK_CMD_DISABLE_KEYCLICK 0x99
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#define LK_CMD_DISABLE_BELL 0xa1
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#define LK_CMD_SOUND_BELL 0xa7
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#define LK_CMD_ENABLE_BELL 0x23
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#define LK_CMD_DISABLE_CTRCLICK 0xb9
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#define LK_CMD_ENABLE_CTRCLICK 0xbb
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#define LK_CMD_SET_DEFAULTS 0xd3
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#define LK_CMD_POWERCYCLE_RESET 0xfd
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#define LK_CMD_ENABLE_LK401 0xe9
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#define LK_CMD_REQUEST_ID 0xab
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/* Misc responses from keyboard */
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#define LK_STUCK_KEY 0x3d
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#define LK_SELFTEST_FAILED 0x3e
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#define LK_ALL_KEYS_UP 0xb3
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#define LK_METRONOME 0xb4
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#define LK_OUTPUT_ERROR 0xb5
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#define LK_INPUT_ERROR 0xb6
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#define LK_KBD_LOCKED 0xb7
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#define LK_KBD_TEST_MODE_ACK 0xb8
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#define LK_PREFIX_KEY_DOWN 0xb9
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#define LK_MODE_CHANGE_ACK 0xba
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#define LK_RESPONSE_RESERVED 0xbb
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#define LK_NUM_KEYCODES 256
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#define LK_NUM_IGNORE_BYTES 6
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static unsigned short lkkbd_keycode[LK_NUM_KEYCODES] = {
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[0x56] = KEY_F1,
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[0x57] = KEY_F2,
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[0x58] = KEY_F3,
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[0x59] = KEY_F4,
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[0x5a] = KEY_F5,
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[0x64] = KEY_F6,
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[0x65] = KEY_F7,
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[0x66] = KEY_F8,
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[0x67] = KEY_F9,
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[0x68] = KEY_F10,
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[0x71] = KEY_F11,
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[0x72] = KEY_F12,
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[0x73] = KEY_F13,
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[0x74] = KEY_F14,
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[0x7c] = KEY_F15,
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[0x7d] = KEY_F16,
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[0x80] = KEY_F17,
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[0x81] = KEY_F18,
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[0x82] = KEY_F19,
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[0x83] = KEY_F20,
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[0x8a] = KEY_FIND,
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[0x8b] = KEY_INSERT,
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[0x8c] = KEY_DELETE,
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[0x8d] = KEY_SELECT,
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[0x8e] = KEY_PAGEUP,
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[0x8f] = KEY_PAGEDOWN,
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[0x92] = KEY_KP0,
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[0x94] = KEY_KPDOT,
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[0x95] = KEY_KPENTER,
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[0x96] = KEY_KP1,
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[0x97] = KEY_KP2,
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[0x98] = KEY_KP3,
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[0x99] = KEY_KP4,
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[0x9a] = KEY_KP5,
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[0x9b] = KEY_KP6,
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[0x9c] = KEY_KPCOMMA,
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[0x9d] = KEY_KP7,
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[0x9e] = KEY_KP8,
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[0x9f] = KEY_KP9,
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[0xa0] = KEY_KPMINUS,
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[0xa1] = KEY_PROG1,
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[0xa2] = KEY_PROG2,
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[0xa3] = KEY_PROG3,
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[0xa4] = KEY_PROG4,
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[0xa7] = KEY_LEFT,
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[0xa8] = KEY_RIGHT,
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[0xa9] = KEY_DOWN,
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[0xaa] = KEY_UP,
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[0xab] = KEY_RIGHTSHIFT,
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[0xac] = KEY_LEFTALT,
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[0xad] = KEY_COMPOSE, /* Right Compose, that is. */
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[0xae] = KEY_LEFTSHIFT, /* Same as KEY_RIGHTSHIFT on LK201 */
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[0xaf] = KEY_LEFTCTRL,
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[0xb0] = KEY_CAPSLOCK,
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[0xb1] = KEY_COMPOSE, /* Left Compose, that is. */
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[0xb2] = KEY_RIGHTALT,
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[0xbc] = KEY_BACKSPACE,
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[0xbd] = KEY_ENTER,
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[0xbe] = KEY_TAB,
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[0xbf] = KEY_ESC,
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[0xc0] = KEY_1,
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[0xc1] = KEY_Q,
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[0xc2] = KEY_A,
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[0xc3] = KEY_Z,
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[0xc5] = KEY_2,
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[0xc6] = KEY_W,
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[0xc7] = KEY_S,
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[0xc8] = KEY_X,
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[0xc9] = KEY_102ND,
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[0xcb] = KEY_3,
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[0xcc] = KEY_E,
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[0xcd] = KEY_D,
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[0xce] = KEY_C,
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[0xd0] = KEY_4,
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[0xd1] = KEY_R,
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[0xd2] = KEY_F,
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[0xd3] = KEY_V,
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[0xd4] = KEY_SPACE,
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[0xd6] = KEY_5,
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[0xd7] = KEY_T,
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[0xd8] = KEY_G,
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[0xd9] = KEY_B,
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[0xdb] = KEY_6,
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[0xdc] = KEY_Y,
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[0xdd] = KEY_H,
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[0xde] = KEY_N,
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[0xe0] = KEY_7,
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[0xe1] = KEY_U,
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[0xe2] = KEY_J,
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[0xe3] = KEY_M,
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[0xe5] = KEY_8,
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[0xe6] = KEY_I,
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[0xe7] = KEY_K,
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[0xe8] = KEY_COMMA,
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[0xea] = KEY_9,
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[0xeb] = KEY_O,
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[0xec] = KEY_L,
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[0xed] = KEY_DOT,
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[0xef] = KEY_0,
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[0xf0] = KEY_P,
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[0xf2] = KEY_SEMICOLON,
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[0xf3] = KEY_SLASH,
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[0xf5] = KEY_EQUAL,
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[0xf6] = KEY_RIGHTBRACE,
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[0xf7] = KEY_BACKSLASH,
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[0xf9] = KEY_MINUS,
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[0xfa] = KEY_LEFTBRACE,
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[0xfb] = KEY_APOSTROPHE,
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};
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#define CHECK_LED(LK, VAR_ON, VAR_OFF, LED, BITS) do { \
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if (test_bit(LED, (LK)->dev->led)) \
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VAR_ON |= BITS; \
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else \
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VAR_OFF |= BITS; \
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} while (0)
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/*
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* Per-keyboard data
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*/
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struct lkkbd {
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unsigned short keycode[LK_NUM_KEYCODES];
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int ignore_bytes;
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unsigned char id[LK_NUM_IGNORE_BYTES];
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struct input_dev *dev;
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struct serio *serio;
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struct work_struct tq;
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char name[64];
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char phys[32];
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char type;
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int bell_volume;
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int keyclick_volume;
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int ctrlclick_volume;
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};
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#ifdef LKKBD_DEBUG
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/*
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* Responses from the keyboard and mapping back to their names.
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*/
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static struct {
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unsigned char value;
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unsigned char *name;
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} lk_response[] = {
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#define RESPONSE(x) { .value = (x), .name = #x, }
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RESPONSE(LK_STUCK_KEY),
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RESPONSE(LK_SELFTEST_FAILED),
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RESPONSE(LK_ALL_KEYS_UP),
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RESPONSE(LK_METRONOME),
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RESPONSE(LK_OUTPUT_ERROR),
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RESPONSE(LK_INPUT_ERROR),
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RESPONSE(LK_KBD_LOCKED),
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RESPONSE(LK_KBD_TEST_MODE_ACK),
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RESPONSE(LK_PREFIX_KEY_DOWN),
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RESPONSE(LK_MODE_CHANGE_ACK),
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RESPONSE(LK_RESPONSE_RESERVED),
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#undef RESPONSE
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};
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static unsigned char *response_name(unsigned char value)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(lk_response); i++)
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if (lk_response[i].value == value)
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return lk_response[i].name;
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return "<unknown>";
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}
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#endif /* LKKBD_DEBUG */
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/*
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* Calculate volume parameter byte for a given volume.
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*/
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static unsigned char volume_to_hw(int volume_percent)
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{
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unsigned char ret = 0;
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if (volume_percent < 0)
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volume_percent = 0;
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if (volume_percent > 100)
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volume_percent = 100;
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if (volume_percent >= 0)
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ret = 7;
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if (volume_percent >= 13) /* 12.5 */
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ret = 6;
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if (volume_percent >= 25)
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ret = 5;
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if (volume_percent >= 38) /* 37.5 */
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ret = 4;
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if (volume_percent >= 50)
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ret = 3;
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if (volume_percent >= 63) /* 62.5 */
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ret = 2; /* This is the default volume */
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if (volume_percent >= 75)
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ret = 1;
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if (volume_percent >= 88) /* 87.5 */
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ret = 0;
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ret |= 0x80;
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return ret;
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}
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static void lkkbd_detection_done(struct lkkbd *lk)
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{
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int i;
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/*
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* Reset setting for Compose key. Let Compose be KEY_COMPOSE.
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*/
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lk->keycode[0xb1] = KEY_COMPOSE;
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/*
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* Print keyboard name and modify Compose=Alt on user's request.
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*/
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switch (lk->id[4]) {
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case 1:
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strlcpy(lk->name, "DEC LK201 keyboard", sizeof(lk->name));
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if (lk201_compose_is_alt)
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lk->keycode[0xb1] = KEY_LEFTALT;
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break;
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case 2:
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strlcpy(lk->name, "DEC LK401 keyboard", sizeof(lk->name));
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break;
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default:
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strlcpy(lk->name, "Unknown DEC keyboard", sizeof(lk->name));
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printk(KERN_ERR
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"lkkbd: keyboard on %s is unknown, please report to "
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"Jan-Benedict Glaw <jbglaw@lug-owl.de>\n", lk->phys);
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printk(KERN_ERR "lkkbd: keyboard ID'ed as:");
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for (i = 0; i < LK_NUM_IGNORE_BYTES; i++)
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printk(" 0x%02x", lk->id[i]);
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printk("\n");
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break;
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}
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printk(KERN_INFO "lkkbd: keyboard on %s identified as: %s\n",
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lk->phys, lk->name);
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/*
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* Report errors during keyboard boot-up.
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*/
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switch (lk->id[2]) {
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case 0x00:
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/* All okay */
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break;
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case LK_STUCK_KEY:
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printk(KERN_ERR "lkkbd: Stuck key on keyboard at %s\n",
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lk->phys);
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break;
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case LK_SELFTEST_FAILED:
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printk(KERN_ERR
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"lkkbd: Selftest failed on keyboard at %s, "
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"keyboard may not work properly\n", lk->phys);
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break;
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default:
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printk(KERN_ERR
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"lkkbd: Unknown error %02x on keyboard at %s\n",
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lk->id[2], lk->phys);
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break;
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}
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/*
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* Try to hint user if there's a stuck key.
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*/
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if (lk->id[2] == LK_STUCK_KEY && lk->id[3] != 0)
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printk(KERN_ERR
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"Scancode of stuck key is 0x%02x, keycode is 0x%04x\n",
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lk->id[3], lk->keycode[lk->id[3]]);
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}
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/*
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* lkkbd_interrupt() is called by the low level driver when a character
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* is received.
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*/
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static irqreturn_t lkkbd_interrupt(struct serio *serio,
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unsigned char data, unsigned int flags)
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{
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struct lkkbd *lk = serio_get_drvdata(serio);
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struct input_dev *input_dev = lk->dev;
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unsigned int keycode;
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int i;
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DBG(KERN_INFO "Got byte 0x%02x\n", data);
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if (lk->ignore_bytes > 0) {
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DBG(KERN_INFO "Ignoring a byte on %s\n", lk->name);
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lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data;
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if (lk->ignore_bytes == 0)
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lkkbd_detection_done(lk);
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return IRQ_HANDLED;
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}
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switch (data) {
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case LK_ALL_KEYS_UP:
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for (i = 0; i < ARRAY_SIZE(lkkbd_keycode); i++)
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input_report_key(input_dev, lk->keycode[i], 0);
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input_sync(input_dev);
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break;
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case 0x01:
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DBG(KERN_INFO "Got 0x01, scheduling re-initialization\n");
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lk->ignore_bytes = LK_NUM_IGNORE_BYTES;
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lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data;
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schedule_work(&lk->tq);
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break;
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|
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case LK_METRONOME:
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case LK_OUTPUT_ERROR:
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case LK_INPUT_ERROR:
|
|
case LK_KBD_LOCKED:
|
|
case LK_KBD_TEST_MODE_ACK:
|
|
case LK_PREFIX_KEY_DOWN:
|
|
case LK_MODE_CHANGE_ACK:
|
|
case LK_RESPONSE_RESERVED:
|
|
DBG(KERN_INFO "Got %s and don't know how to handle...\n",
|
|
response_name(data));
|
|
break;
|
|
|
|
default:
|
|
keycode = lk->keycode[data];
|
|
if (keycode != KEY_RESERVED) {
|
|
input_report_key(input_dev, keycode,
|
|
!test_bit(keycode, input_dev->key));
|
|
input_sync(input_dev);
|
|
} else {
|
|
printk(KERN_WARNING
|
|
"%s: Unknown key with scancode 0x%02x on %s.\n",
|
|
__FILE__, data, lk->name);
|
|
}
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void lkkbd_toggle_leds(struct lkkbd *lk)
|
|
{
|
|
struct serio *serio = lk->serio;
|
|
unsigned char leds_on = 0;
|
|
unsigned char leds_off = 0;
|
|
|
|
CHECK_LED(lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK);
|
|
CHECK_LED(lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE);
|
|
CHECK_LED(lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK);
|
|
CHECK_LED(lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT);
|
|
if (leds_on != 0) {
|
|
serio_write(serio, LK_CMD_LED_ON);
|
|
serio_write(serio, leds_on);
|
|
}
|
|
if (leds_off != 0) {
|
|
serio_write(serio, LK_CMD_LED_OFF);
|
|
serio_write(serio, leds_off);
|
|
}
|
|
}
|
|
|
|
static void lkkbd_toggle_keyclick(struct lkkbd *lk, bool on)
|
|
{
|
|
struct serio *serio = lk->serio;
|
|
|
|
if (on) {
|
|
DBG("%s: Activating key clicks\n", __func__);
|
|
serio_write(serio, LK_CMD_ENABLE_KEYCLICK);
|
|
serio_write(serio, volume_to_hw(lk->keyclick_volume));
|
|
serio_write(serio, LK_CMD_ENABLE_CTRCLICK);
|
|
serio_write(serio, volume_to_hw(lk->ctrlclick_volume));
|
|
} else {
|
|
DBG("%s: Deactivating key clicks\n", __func__);
|
|
serio_write(serio, LK_CMD_DISABLE_KEYCLICK);
|
|
serio_write(serio, LK_CMD_DISABLE_CTRCLICK);
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
* lkkbd_event() handles events from the input module.
|
|
*/
|
|
static int lkkbd_event(struct input_dev *dev,
|
|
unsigned int type, unsigned int code, int value)
|
|
{
|
|
struct lkkbd *lk = input_get_drvdata(dev);
|
|
|
|
switch (type) {
|
|
case EV_LED:
|
|
lkkbd_toggle_leds(lk);
|
|
return 0;
|
|
|
|
case EV_SND:
|
|
switch (code) {
|
|
case SND_CLICK:
|
|
lkkbd_toggle_keyclick(lk, value);
|
|
return 0;
|
|
|
|
case SND_BELL:
|
|
if (value != 0)
|
|
serio_write(lk->serio, LK_CMD_SOUND_BELL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_ERR "%s(): Got unknown type %d, code %d, value %d\n",
|
|
__func__, type, code, value);
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* lkkbd_reinit() sets leds and beeps to a state the computer remembers they
|
|
* were in.
|
|
*/
|
|
static void lkkbd_reinit(struct work_struct *work)
|
|
{
|
|
struct lkkbd *lk = container_of(work, struct lkkbd, tq);
|
|
int division;
|
|
|
|
/* Ask for ID */
|
|
serio_write(lk->serio, LK_CMD_REQUEST_ID);
|
|
|
|
/* Reset parameters */
|
|
serio_write(lk->serio, LK_CMD_SET_DEFAULTS);
|
|
|
|
/* Set LEDs */
|
|
lkkbd_toggle_leds(lk);
|
|
|
|
/*
|
|
* Try to activate extended LK401 mode. This command will
|
|
* only work with a LK401 keyboard and grants access to
|
|
* LAlt, RAlt, RCompose and RShift.
|
|
*/
|
|
serio_write(lk->serio, LK_CMD_ENABLE_LK401);
|
|
|
|
/* Set all keys to UPDOWN mode */
|
|
for (division = 1; division <= 14; division++)
|
|
serio_write(lk->serio,
|
|
LK_CMD_SET_MODE(LK_MODE_UPDOWN, division));
|
|
|
|
/* Enable bell and set volume */
|
|
serio_write(lk->serio, LK_CMD_ENABLE_BELL);
|
|
serio_write(lk->serio, volume_to_hw(lk->bell_volume));
|
|
|
|
/* Enable/disable keyclick (and possibly set volume) */
|
|
lkkbd_toggle_keyclick(lk, test_bit(SND_CLICK, lk->dev->snd));
|
|
|
|
/* Sound the bell if needed */
|
|
if (test_bit(SND_BELL, lk->dev->snd))
|
|
serio_write(lk->serio, LK_CMD_SOUND_BELL);
|
|
}
|
|
|
|
/*
|
|
* lkkbd_connect() probes for a LK keyboard and fills the necessary structures.
|
|
*/
|
|
static int lkkbd_connect(struct serio *serio, struct serio_driver *drv)
|
|
{
|
|
struct lkkbd *lk;
|
|
struct input_dev *input_dev;
|
|
int i;
|
|
int err;
|
|
|
|
lk = kzalloc(sizeof(struct lkkbd), GFP_KERNEL);
|
|
input_dev = input_allocate_device();
|
|
if (!lk || !input_dev) {
|
|
err = -ENOMEM;
|
|
goto fail1;
|
|
}
|
|
|
|
lk->serio = serio;
|
|
lk->dev = input_dev;
|
|
INIT_WORK(&lk->tq, lkkbd_reinit);
|
|
lk->bell_volume = bell_volume;
|
|
lk->keyclick_volume = keyclick_volume;
|
|
lk->ctrlclick_volume = ctrlclick_volume;
|
|
memcpy(lk->keycode, lkkbd_keycode, sizeof(lk->keycode));
|
|
|
|
strlcpy(lk->name, "DEC LK keyboard", sizeof(lk->name));
|
|
snprintf(lk->phys, sizeof(lk->phys), "%s/input0", serio->phys);
|
|
|
|
input_dev->name = lk->name;
|
|
input_dev->phys = lk->phys;
|
|
input_dev->id.bustype = BUS_RS232;
|
|
input_dev->id.vendor = SERIO_LKKBD;
|
|
input_dev->id.product = 0;
|
|
input_dev->id.version = 0x0100;
|
|
input_dev->dev.parent = &serio->dev;
|
|
input_dev->event = lkkbd_event;
|
|
|
|
input_set_drvdata(input_dev, lk);
|
|
|
|
__set_bit(EV_KEY, input_dev->evbit);
|
|
__set_bit(EV_LED, input_dev->evbit);
|
|
__set_bit(EV_SND, input_dev->evbit);
|
|
__set_bit(EV_REP, input_dev->evbit);
|
|
__set_bit(LED_CAPSL, input_dev->ledbit);
|
|
__set_bit(LED_SLEEP, input_dev->ledbit);
|
|
__set_bit(LED_COMPOSE, input_dev->ledbit);
|
|
__set_bit(LED_SCROLLL, input_dev->ledbit);
|
|
__set_bit(SND_BELL, input_dev->sndbit);
|
|
__set_bit(SND_CLICK, input_dev->sndbit);
|
|
|
|
input_dev->keycode = lk->keycode;
|
|
input_dev->keycodesize = sizeof(lk->keycode[0]);
|
|
input_dev->keycodemax = ARRAY_SIZE(lk->keycode);
|
|
|
|
for (i = 0; i < LK_NUM_KEYCODES; i++)
|
|
__set_bit(lk->keycode[i], input_dev->keybit);
|
|
__clear_bit(KEY_RESERVED, input_dev->keybit);
|
|
|
|
serio_set_drvdata(serio, lk);
|
|
|
|
err = serio_open(serio, drv);
|
|
if (err)
|
|
goto fail2;
|
|
|
|
err = input_register_device(lk->dev);
|
|
if (err)
|
|
goto fail3;
|
|
|
|
serio_write(lk->serio, LK_CMD_POWERCYCLE_RESET);
|
|
|
|
return 0;
|
|
|
|
fail3: serio_close(serio);
|
|
fail2: serio_set_drvdata(serio, NULL);
|
|
fail1: input_free_device(input_dev);
|
|
kfree(lk);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* lkkbd_disconnect() unregisters and closes behind us.
|
|
*/
|
|
static void lkkbd_disconnect(struct serio *serio)
|
|
{
|
|
struct lkkbd *lk = serio_get_drvdata(serio);
|
|
|
|
input_get_device(lk->dev);
|
|
input_unregister_device(lk->dev);
|
|
serio_close(serio);
|
|
serio_set_drvdata(serio, NULL);
|
|
input_put_device(lk->dev);
|
|
kfree(lk);
|
|
}
|
|
|
|
static const struct serio_device_id lkkbd_serio_ids[] = {
|
|
{
|
|
.type = SERIO_RS232,
|
|
.proto = SERIO_LKKBD,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{ 0 }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids);
|
|
|
|
static struct serio_driver lkkbd_drv = {
|
|
.driver = {
|
|
.name = "lkkbd",
|
|
},
|
|
.description = DRIVER_DESC,
|
|
.id_table = lkkbd_serio_ids,
|
|
.connect = lkkbd_connect,
|
|
.disconnect = lkkbd_disconnect,
|
|
.interrupt = lkkbd_interrupt,
|
|
};
|
|
|
|
module_serio_driver(lkkbd_drv);
|