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245 lines
7.4 KiB
245 lines
7.4 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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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 (c) YAEGASHI Takeshi, 2001 |
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* Porting to 2.6 Copyright (c) Adrian McMenamin, 2007 - 2009 |
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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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/* 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("Adrian McMenamin <[email protected]"); |
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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, |
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KEY_C, KEY_D, 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, KEY_U, KEY_V, |
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KEY_W, KEY_X, KEY_Y, KEY_Z, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, |
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KEY_7, KEY_8, KEY_9, KEY_0, KEY_ENTER, KEY_ESC, KEY_BACKSPACE, |
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KEY_TAB, KEY_SPACE, KEY_MINUS, KEY_EQUAL, KEY_LEFTBRACE, |
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KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_BACKSLASH, KEY_SEMICOLON, |
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KEY_APOSTROPHE, KEY_GRAVE, KEY_COMMA, KEY_DOT, KEY_SLASH, |
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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, |
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KEY_DELETE, KEY_END, KEY_PAGEDOWN, KEY_RIGHT, KEY_LEFT, KEY_DOWN, |
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KEY_UP, KEY_NUMLOCK, KEY_KPSLASH, KEY_KPASTERISK, KEY_KPMINUS, |
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KEY_KPPLUS, KEY_KPENTER, KEY_KP1, KEY_KP2, KEY_KP3, KEY_KP4, KEY_KP5, |
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KEY_KP6, KEY_KP7, KEY_KP8, KEY_KP9, KEY_KP0, KEY_KPDOT, KEY_102ND, |
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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, KEY_F21, KEY_F22, |
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KEY_F23, KEY_F24, KEY_OPEN, KEY_HELP, KEY_PROPS, KEY_FRONT, KEY_STOP, |
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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, |
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KEY_KPCOMMA, KEY_RESERVED, KEY_RO, KEY_KATAKANAHIRAGANA , KEY_YEN, |
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KEY_HENKAN, KEY_MUHENKAN, KEY_KPJPCOMMA, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_HANGEUL, KEY_HANJA, KEY_KATAKANA, KEY_HIRAGANA, |
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KEY_ZENKAKUHANKAKU, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, |
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KEY_RESERVED, KEY_RESERVED, KEY_LEFTCTRL, KEY_LEFTSHIFT, KEY_LEFTALT, |
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KEY_LEFTMETA, KEY_RIGHTCTRL, KEY_RIGHTSHIFT, KEY_RIGHTALT, |
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KEY_RIGHTMETA, KEY_PLAYPAUSE, KEY_STOPCD, KEY_PREVIOUSSONG, |
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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, |
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KEY_SCROLLDOWN, KEY_EDIT, KEY_SLEEP, KEY_SCREENLOCK, KEY_REFRESH, |
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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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dev_dbg(&dev->dev, |
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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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dev_dbg(&dev->dev, |
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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 = maple_get_drvdata(mapledev); |
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unsigned long *buf = (unsigned long *)(mq->recvbuf->buf); |
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/* |
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* We should always get the lock because the only |
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* time it may be locked is if the driver is in the 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 probe_maple_kbd(struct device *dev) |
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{ |
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struct maple_device *mdev; |
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struct maple_driver *mdrv; |
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int i, error; |
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struct dc_kbd *kbd; |
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struct input_dev *idev; |
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mdev = to_maple_dev(dev); |
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mdrv = to_maple_driver(dev->driver); |
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kbd = kzalloc(sizeof(struct dc_kbd), GFP_KERNEL); |
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if (!kbd) { |
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error = -ENOMEM; |
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goto fail; |
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} |
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idev = input_allocate_device(); |
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if (!idev) { |
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error = -ENOMEM; |
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goto fail_idev_alloc; |
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} |
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kbd->dev = idev; |
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memcpy(kbd->keycode, dc_kbd_keycode, sizeof(kbd->keycode)); |
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idev->name = mdev->product_name; |
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idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); |
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idev->keycode = kbd->keycode; |
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idev->keycodesize = sizeof(unsigned short); |
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idev->keycodemax = ARRAY_SIZE(kbd->keycode); |
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idev->id.bustype = BUS_HOST; |
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idev->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], idev->keybit); |
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__clear_bit(KEY_RESERVED, idev->keybit); |
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input_set_capability(idev, EV_MSC, MSC_SCAN); |
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error = input_register_device(idev); |
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if (error) |
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goto fail_register; |
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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, |
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MAPLE_FUNC_KEYBOARD); |
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mdev->driver = mdrv; |
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maple_set_drvdata(mdev, kbd); |
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return error; |
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fail_register: |
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maple_set_drvdata(mdev, NULL); |
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input_free_device(idev); |
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fail_idev_alloc: |
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kfree(kbd); |
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fail: |
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return error; |
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} |
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static int remove_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 dc_kbd *kbd = maple_get_drvdata(mdev); |
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mutex_lock(&maple_keyb_mutex); |
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input_unregister_device(kbd->dev); |
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kfree(kbd); |
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maple_set_drvdata(mdev, NULL); |
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mutex_unlock(&maple_keyb_mutex); |
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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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.drv = { |
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.name = "Dreamcast_keyboard", |
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.probe = probe_maple_kbd, |
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.remove = remove_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); |
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} |
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static void __exit dc_kbd_exit(void) |
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{ |
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maple_driver_unregister(&dc_kbd_driver); |
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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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