This patch adds support for the SEGA Dreamcast keyboard. Following suggestions from the inout maintainer it has been somewhat rewritten since the previous posting (http://lkml.org/lkml/2007/9/4/168).
It is dependent on patch 1 in this series (http://lkml.org/lkml/2007/9/9/70) - which provides the core maple bus support. Signed-off by: Adrian McMenamin <[EMAIL PROTECTED]> diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index c97d5eb..056cc52 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -253,4 +253,14 @@ config KEYBOARD_GPIO To compile this driver as a module, choose M here: the module will be called gpio-keys. + +config KEYBOARD_MAPLE + tristate "Maple bus keyboard" + depends on SH_DREAMCAST && MAPLE + help + Say Y here if you have a Dreamcast console running Linux and have + a keyboard attached to its Maple bus. + + To compile this driver as a module, choose M here: the + module will be called maple_keyb. endif diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile index 28d211b..3f775ed 100644 --- a/drivers/input/keyboard/Makefile +++ b/drivers/input/keyboard/Makefile @@ -21,4 +21,5 @@ obj-$(CONFIG_KEYBOARD_OMAP) += omap-keypad.o obj-$(CONFIG_KEYBOARD_PXA27x) += pxa27x_keyboard.o obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o +obj-$(CONFIG_KEYBOARD_MAPLE) += maple_keyb.o diff --git a/drivers/input/keyboard/maple_keyb.c b/drivers/input/keyboard/maple_keyb.c new file mode 100644 index 0000000..8836e40 --- /dev/null +++ b/drivers/input/keyboard/maple_keyb.c @@ -0,0 +1,234 @@ +/* + * SEGA Dreamcast keyboard driver + * Based on drivers/usb/usbkbd.c + * Copyright YAEGASHI Takeshi, 2001 + * Porting to 2.6 Copyright Adrian McMenamin, 2007 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/timer.h> +#include <linux/maple.h> + +/* Very simple mutex to ensure proper cleanup */ +DECLARE_MUTEX(maple_keyb_mutex); + +#define NR_SCANCODES 256 + +MODULE_AUTHOR("YAEGASHI Takeshi, Adrian McMenamin"); +MODULE_DESCRIPTION("SEGA Dreamcast keyboard driver"); +MODULE_LICENSE("GPL"); + +extern int maple_driver_register(struct device_driver *drv); + +const static unsigned char dc_kbd_keycode[NR_SCANCODES] = { + KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_A, KEY_B, KEY_C, KEY_D, + KEY_E, KEY_F, KEY_G, KEY_H, KEY_I, KEY_J, KEY_K, KEY_L, + KEY_M, KEY_N, KEY_O, KEY_P, KEY_Q, KEY_R, KEY_S, KEY_T, + KEY_U, KEY_V, KEY_W, KEY_X, KEY_Y, KEY_Z, KEY_1, KEY_2, + KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, KEY_0, + KEY_ENTER, KEY_ESC, KEY_BACKSPACE, KEY_TAB, KEY_SPACE, KEY_MINUS, KEY_EQUAL, KEY_LEFTBRACE, + KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_BACKSLASH, KEY_SEMICOLON, KEY_APOSTROPHE, KEY_GRAVE, KEY_COMMA, + KEY_DOT, KEY_SLASH, KEY_CAPSLOCK, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, + KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, KEY_SYSRQ, + KEY_SCROLLLOCK, KEY_PAUSE, KEY_INSERT, KEY_HOME, KEY_PAGEUP, KEY_DELETE, + KEY_END, KEY_PAGEDOWN, KEY_RIGHT, KEY_LEFT, KEY_DOWN, KEY_UP, + KEY_NUMLOCK, KEY_KPSLASH, KEY_KPASTERISK, KEY_KPMINUS, KEY_KPPLUS, KEY_KPENTER, KEY_KP1, KEY_KP2, + KEY_KP3, KEY_KP4, KEY_KP5, KEY_KP6, KEY_KP7, KEY_KP8, KEY_KP9, KEY_KP0, KEY_KPDOT, + KEY_102ND, KEY_COMPOSE, KEY_POWER, KEY_KPEQUAL, KEY_F13, KEY_F14, KEY_F15, + KEY_F16, KEY_F17, KEY_F18, KEY_F19, KEY_F20, + KEY_F21, KEY_F22, KEY_F23, KEY_F24, KEY_OPEN, KEY_HELP, KEY_PROPS, KEY_FRONT, + KEY_STOP, KEY_AGAIN, KEY_UNDO, KEY_CUT, KEY_COPY, KEY_PASTE, KEY_FIND, KEY_MUTE, + KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_KPCOMMA, KEY_RESERVED, KEY_RO, KEY_KATAKANAHIRAGANA , KEY_YEN, + KEY_HENKAN, KEY_MUHENKAN, KEY_KPJPCOMMA, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, + KEY_HANGEUL, KEY_HANJA, KEY_KATAKANA, KEY_HIRAGANA, KEY_ZENKAKUHANKAKU, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, + KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, + KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, + KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, + KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, + KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, + KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, + KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, + KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, + KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, + KEY_LEFTCTRL, KEY_LEFTSHIFT, KEY_LEFTALT, KEY_LEFTMETA, KEY_RIGHTCTRL, KEY_RIGHTSHIFT, KEY_RIGHTALT, KEY_RIGHTMETA, + KEY_PLAYPAUSE, KEY_STOPCD, KEY_PREVIOUSSONG, KEY_NEXTSONG, KEY_EJECTCD, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE, + KEY_WWW, KEY_BACK, KEY_FORWARD, KEY_STOP, KEY_FIND, KEY_SCROLLUP, KEY_SCROLLDOWN, KEY_EDIT, KEY_SLEEP, + KEY_SCREENLOCK, KEY_REFRESH, KEY_CALC, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED +}; + +struct dc_kbd { + struct input_dev *dev; + unsigned char keycode[NR_SCANCODES]; + unsigned char new[8]; + unsigned char old[8]; +}; + +static void dc_scan_kbd(struct dc_kbd *kbd) +{ + int i; + void *ptr; + struct input_dev *dev = kbd->dev; + + for (i = 0; i < 8; i++) + input_report_key(dev, kbd->keycode[i + 224], + (kbd->new[0] >> i) & 1); + + for (i = 2; i < 8; i++) { + ptr = memchr(kbd->new + 2, kbd->old[i], 6); + if (kbd->old[i] > 3 && ptr == NULL) { + if (dc_kbd_keycode[kbd->old[i]]) + input_report_key(dev, kbd->keycode[kbd->old[i]], 0); + else + printk (KERN_DEBUG "Unknown key (scancode %#x) released.", kbd->old[i]); + } + ptr = memchr(kbd->old + 2, kbd->new[i], 6); + if (kbd->new[i] > 3 && ptr) { + if (dc_kbd_keycode[kbd->new[i]]) + input_report_key(dev, kbd->keycode[kbd->new[i]], 1); + else + printk(KERN_DEBUG "Unknown key (scancode %#x) pressed.", kbd->new[i]); + } + } + input_sync(dev); + memcpy(kbd->old, kbd->new, 8); +} + +static void dc_kbd_callback(struct mapleq *mq) +{ + struct maple_device *mapledev = mq->dev; + struct dc_kbd *kbd = mapledev->private_data; + unsigned long *buf = mq->recvbuf; + if (down_trylock(&maple_keyb_mutex)) /* Can only be down if already in cleanup */ + return; + if (buf[1] == mapledev->function) { + memcpy(kbd->new, buf + 2, 8); + dc_scan_kbd(kbd); + } + up(&maple_keyb_mutex); +} + +static int dc_kbd_connect(struct maple_device *dev) +{ + int i, retval = 0; + struct dc_kbd *kbd; + if (!(dev->function & MAPLE_FUNC_KEYBOARD)) + return -EINVAL; + + kbd = kzalloc(sizeof(struct dc_kbd), GFP_KERNEL); + if (unlikely(!kbd)) + return -ENOMEM; + + dev->private_data = kbd; + kbd->dev = input_allocate_device(); + if (!kbd->dev){ + retval = -ENODEV; + goto cleanup_memory; + } + + for (i = 0; i < NR_SCANCODES; i++) + kbd->keycode[i] = dc_kbd_keycode[i]; + kbd->dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); + kbd->dev->keycodesize = sizeof (unsigned char); + kbd->dev->keycodemax = ARRAY_SIZE(kbd->keycode); + kbd->dev->keycode = kbd->keycode; + + + for (i = 0; i < 255; i++) + set_bit(dc_kbd_keycode[i], kbd->dev->keybit); + + clear_bit(0, kbd->dev->keybit); + + kbd->dev->private = kbd; + + kbd->dev->name = dev->product_name; + kbd->dev->id.bustype = BUS_HOST; + + retval = input_register_device(kbd->dev); + if (retval) + goto cleanup; + /* Maple polling is locked to VBLANK - which may be just 50/s */ + maple_getcond_callback(dev, dc_kbd_callback, HZ/45 + 1, + MAPLE_FUNC_KEYBOARD); + return retval; + +cleanup: + input_free_device(kbd->dev); +cleanup_memory: + kfree(kbd); + return retval; +} + +static void dc_kbd_disconnect(struct maple_device *dev) +{ + struct dc_kbd *kbd; + down_interruptible(&maple_keyb_mutex); + kbd = dev->private_data; + + input_unregister_device(kbd->dev); + kfree(kbd); + up(&maple_keyb_mutex); +} + +/* allow the keyboard to be used */ +static int probe_maple_kbd(struct device *dev) +{ + struct maple_device *mdev; + struct maple_driver *mdrv; + int proberes; + + mdev = to_maple_dev(dev); + mdrv = to_maple_driver(dev->driver); + + proberes = dc_kbd_connect(mdev); + if (unlikely(proberes)) + return proberes; + mdev->driver = mdrv; + mdev->registered = 1; + return 0; +} + +static struct maple_driver dc_kbd_driver = { + .function = MAPLE_FUNC_KEYBOARD, + .connect = dc_kbd_connect, + .disconnect = dc_kbd_disconnect, + .drv = { + .name = "Dreamcast_keyboard", + .probe = probe_maple_kbd, + }, +}; + +static int __init dc_kbd_init(void) +{ + int retval; + retval = maple_driver_register(&dc_kbd_driver.drv); + if (retval) + return retval; + return 0; +} + +static void __exit dc_kbd_exit(void) +{ + driver_unregister(&dc_kbd_driver.drv); +} + +module_init(dc_kbd_init); +module_exit(dc_kbd_exit); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
