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Input: add support for SEGA Dreamcast keyboard
Signed-off by: Adrian McMenamin <adrian@mcmen.demon.co.uk> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Adrian McMenamin
Dmitry Torokhov
parent
9360353f4a
commit
b11d2127c4
@ -274,4 +274,14 @@ config KEYBOARD_GPIO
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To compile this driver as a module, choose M here: the
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module will be called gpio-keys.
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config KEYBOARD_MAPLE
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tristate "Maple bus keyboard"
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depends on SH_DREAMCAST && MAPLE
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help
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Say Y here if you have a Dreamcast console running Linux and have
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a keyboard attached to its Maple bus.
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To compile this driver as a module, choose M here: the
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module will be called maple_keyb.
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endif
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@ -23,4 +23,5 @@ obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o
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obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o
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obj-$(CONFIG_KEYBOARD_HP6XX) += jornada680_kbd.o
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obj-$(CONFIG_KEYBOARD_HP7XX) += jornada720_kbd.o
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obj-$(CONFIG_KEYBOARD_MAPLE) += maple_keyb.o
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252
drivers/input/keyboard/maple_keyb.c
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252
drivers/input/keyboard/maple_keyb.c
Normal file
@ -0,0 +1,252 @@
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/*
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* SEGA Dreamcast keyboard driver
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* Based on drivers/usb/usbkbd.c
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* Copyright YAEGASHI Takeshi, 2001
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* Porting to 2.6 Copyright Adrian McMenamin, 2007
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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, see the file COPYING, or write
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* to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/input.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/timer.h>
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#include <linux/maple.h>
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#include <asm/mach/maple.h>
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/* Very simple mutex to ensure proper cleanup */
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static DEFINE_MUTEX(maple_keyb_mutex);
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#define NR_SCANCODES 256
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MODULE_AUTHOR("YAEGASHI Takeshi, Adrian McMenamin");
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MODULE_DESCRIPTION("SEGA Dreamcast keyboard driver");
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MODULE_LICENSE("GPL");
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struct dc_kbd {
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struct input_dev *dev;
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unsigned short keycode[NR_SCANCODES];
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unsigned char new[8];
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unsigned char old[8];
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};
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static const unsigned short dc_kbd_keycode[NR_SCANCODES] = {
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_A, KEY_B, KEY_C, KEY_D,
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KEY_E, KEY_F, KEY_G, KEY_H, KEY_I, KEY_J, KEY_K, KEY_L,
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KEY_M, KEY_N, KEY_O, KEY_P, KEY_Q, KEY_R, KEY_S, KEY_T,
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KEY_U, KEY_V, KEY_W, KEY_X, KEY_Y, KEY_Z, KEY_1, KEY_2,
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KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, KEY_0,
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KEY_ENTER, KEY_ESC, KEY_BACKSPACE, KEY_TAB, KEY_SPACE, KEY_MINUS, KEY_EQUAL, KEY_LEFTBRACE,
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KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_BACKSLASH, KEY_SEMICOLON, KEY_APOSTROPHE, KEY_GRAVE, KEY_COMMA,
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KEY_DOT, KEY_SLASH, KEY_CAPSLOCK, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6,
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KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, KEY_SYSRQ,
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KEY_SCROLLLOCK, KEY_PAUSE, KEY_INSERT, KEY_HOME, KEY_PAGEUP, KEY_DELETE,
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KEY_END, KEY_PAGEDOWN, KEY_RIGHT, KEY_LEFT, KEY_DOWN, KEY_UP,
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KEY_NUMLOCK, KEY_KPSLASH, KEY_KPASTERISK, KEY_KPMINUS, KEY_KPPLUS, KEY_KPENTER, KEY_KP1, KEY_KP2,
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KEY_KP3, KEY_KP4, KEY_KP5, KEY_KP6, KEY_KP7, KEY_KP8, KEY_KP9, KEY_KP0, KEY_KPDOT,
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KEY_102ND, KEY_COMPOSE, KEY_POWER, KEY_KPEQUAL, KEY_F13, KEY_F14, KEY_F15,
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KEY_F16, KEY_F17, KEY_F18, KEY_F19, KEY_F20,
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KEY_F21, KEY_F22, KEY_F23, KEY_F24, KEY_OPEN, KEY_HELP, KEY_PROPS, KEY_FRONT,
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KEY_STOP, KEY_AGAIN, KEY_UNDO, KEY_CUT, KEY_COPY, KEY_PASTE, KEY_FIND, KEY_MUTE,
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KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_KPCOMMA, KEY_RESERVED, KEY_RO, KEY_KATAKANAHIRAGANA , KEY_YEN,
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KEY_HENKAN, KEY_MUHENKAN, KEY_KPJPCOMMA, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
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KEY_HANGEUL, KEY_HANJA, KEY_KATAKANA, KEY_HIRAGANA, KEY_ZENKAKUHANKAKU, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
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KEY_LEFTCTRL, KEY_LEFTSHIFT, KEY_LEFTALT, KEY_LEFTMETA, KEY_RIGHTCTRL, KEY_RIGHTSHIFT, KEY_RIGHTALT, KEY_RIGHTMETA,
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KEY_PLAYPAUSE, KEY_STOPCD, KEY_PREVIOUSSONG, KEY_NEXTSONG, KEY_EJECTCD, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE,
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KEY_WWW, KEY_BACK, KEY_FORWARD, KEY_STOP, KEY_FIND, KEY_SCROLLUP, KEY_SCROLLDOWN, KEY_EDIT, KEY_SLEEP,
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KEY_SCREENLOCK, KEY_REFRESH, KEY_CALC, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED
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};
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static void dc_scan_kbd(struct dc_kbd *kbd)
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{
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struct input_dev *dev = kbd->dev;
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void *ptr;
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int code, keycode;
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int i;
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for (i = 0; i < 8; i++) {
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code = i + 224;
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keycode = kbd->keycode[code];
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input_event(dev, EV_MSC, MSC_SCAN, code);
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input_report_key(dev, keycode, (kbd->new[0] >> i) & 1);
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}
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for (i = 2; i < 8; i++) {
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ptr = memchr(kbd->new + 2, kbd->old[i], 6);
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code = kbd->old[i];
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if (code > 3 && ptr == NULL) {
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keycode = kbd->keycode[code];
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if (keycode) {
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input_event(dev, EV_MSC, MSC_SCAN, code);
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input_report_key(dev, keycode, 0);
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} else
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printk(KERN_DEBUG "maple_keyb: "
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"Unknown key (scancode %#x) released.",
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code);
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}
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ptr = memchr(kbd->old + 2, kbd->new[i], 6);
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code = kbd->new[i];
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if (code > 3 && ptr) {
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keycode = kbd->keycode[code];
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if (keycode) {
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input_event(dev, EV_MSC, MSC_SCAN, code);
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input_report_key(dev, keycode, 1);
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} else
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printk(KERN_DEBUG "maple_keyb: "
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"Unknown key (scancode %#x) pressed.",
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code);
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}
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}
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input_sync(dev);
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memcpy(kbd->old, kbd->new, 8);
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}
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static void dc_kbd_callback(struct mapleq *mq)
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{
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struct maple_device *mapledev = mq->dev;
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struct dc_kbd *kbd = mapledev->private_data;
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unsigned long *buf = mq->recvbuf;
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/*
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* We should always be getting the lock because the only
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* time it may be locked if driver is in cleanup phase.
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*/
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if (likely(mutex_trylock(&maple_keyb_mutex))) {
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if (buf[1] == mapledev->function) {
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memcpy(kbd->new, buf + 2, 8);
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dc_scan_kbd(kbd);
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}
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mutex_unlock(&maple_keyb_mutex);
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}
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}
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static int dc_kbd_connect(struct maple_device *mdev)
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{
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int i, error;
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struct dc_kbd *kbd;
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struct input_dev *dev;
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if (!(mdev->function & MAPLE_FUNC_KEYBOARD))
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return -EINVAL;
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kbd = kzalloc(sizeof(struct dc_kbd), GFP_KERNEL);
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dev = input_allocate_device();
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if (!kbd || !dev) {
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error = -ENOMEM;
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goto fail;
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}
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mdev->private_data = kbd;
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kbd->dev = dev;
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memcpy(kbd->keycode, dc_kbd_keycode, sizeof(kbd->keycode));
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dev->name = mdev->product_name;
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dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
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dev->keycode = kbd->keycode;
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dev->keycodesize = sizeof (unsigned short);
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dev->keycodemax = ARRAY_SIZE(kbd->keycode);
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dev->id.bustype = BUS_HOST;
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dev->dev.parent = &mdev->dev;
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for (i = 0; i < NR_SCANCODES; i++)
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__set_bit(dc_kbd_keycode[i], dev->keybit);
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__clear_bit(KEY_RESERVED, dev->keybit);
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input_set_capability(dev, EV_MSC, MSC_SCAN);
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input_set_drvdata(dev, kbd);
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error = input_register_device(dev);
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if (error)
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goto fail;
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/* Maple polling is locked to VBLANK - which may be just 50/s */
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maple_getcond_callback(mdev, dc_kbd_callback, HZ/50, MAPLE_FUNC_KEYBOARD);
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return 0;
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fail:
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input_free_device(dev);
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kfree(kbd);
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mdev->private_data = NULL;
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return error;
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}
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static void dc_kbd_disconnect(struct maple_device *mdev)
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{
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struct dc_kbd *kbd;
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mutex_lock(&maple_keyb_mutex);
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kbd = mdev->private_data;
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mdev->private_data = NULL;
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input_unregister_device(kbd->dev);
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kfree(kbd);
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mutex_unlock(&maple_keyb_mutex);
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}
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/* allow the keyboard to be used */
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static int probe_maple_kbd(struct device *dev)
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{
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struct maple_device *mdev = to_maple_dev(dev);
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struct maple_driver *mdrv = to_maple_driver(dev->driver);
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int error;
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error = dc_kbd_connect(mdev);
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if (error)
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return error;
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mdev->driver = mdrv;
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mdev->registered = 1;
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return 0;
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}
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static struct maple_driver dc_kbd_driver = {
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.function = MAPLE_FUNC_KEYBOARD,
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.connect = dc_kbd_connect,
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.disconnect = dc_kbd_disconnect,
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.drv = {
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.name = "Dreamcast_keyboard",
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.probe = probe_maple_kbd,
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},
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};
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static int __init dc_kbd_init(void)
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{
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return maple_driver_register(&dc_kbd_driver.drv);
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}
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static void __exit dc_kbd_exit(void)
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{
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driver_unregister(&dc_kbd_driver.drv);
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}
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module_init(dc_kbd_init);
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module_exit(dc_kbd_exit);
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