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linux/drivers/input/keyboard/maple_keyb.c
Thomas Gleixner b7b06f8b90 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 64 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 4 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071859.003492977@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:36:46 +02:00

246 lines
7.4 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* SEGA Dreamcast keyboard driver
* Based on drivers/usb/usbkbd.c
* Copyright (c) YAEGASHI Takeshi, 2001
* Porting to 2.6 Copyright (c) Adrian McMenamin, 2007 - 2009
*/
#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 */
static DEFINE_MUTEX(maple_keyb_mutex);
#define NR_SCANCODES 256
MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk");
MODULE_DESCRIPTION("SEGA Dreamcast keyboard driver");
MODULE_LICENSE("GPL");
struct dc_kbd {
struct input_dev *dev;
unsigned short keycode[NR_SCANCODES];
unsigned char new[8];
unsigned char old[8];
};
static const unsigned short 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
};
static void dc_scan_kbd(struct dc_kbd *kbd)
{
struct input_dev *dev = kbd->dev;
void *ptr;
int code, keycode;
int i;
for (i = 0; i < 8; i++) {
code = i + 224;
keycode = kbd->keycode[code];
input_event(dev, EV_MSC, MSC_SCAN, code);
input_report_key(dev, keycode, (kbd->new[0] >> i) & 1);
}
for (i = 2; i < 8; i++) {
ptr = memchr(kbd->new + 2, kbd->old[i], 6);
code = kbd->old[i];
if (code > 3 && ptr == NULL) {
keycode = kbd->keycode[code];
if (keycode) {
input_event(dev, EV_MSC, MSC_SCAN, code);
input_report_key(dev, keycode, 0);
} else
dev_dbg(&dev->dev,
"Unknown key (scancode %#x) released.",
code);
}
ptr = memchr(kbd->old + 2, kbd->new[i], 6);
code = kbd->new[i];
if (code > 3 && ptr) {
keycode = kbd->keycode[code];
if (keycode) {
input_event(dev, EV_MSC, MSC_SCAN, code);
input_report_key(dev, keycode, 1);
} else
dev_dbg(&dev->dev,
"Unknown key (scancode %#x) pressed.",
code);
}
}
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 = maple_get_drvdata(mapledev);
unsigned long *buf = (unsigned long *)(mq->recvbuf->buf);
/*
* We should always get the lock because the only
* time it may be locked is if the driver is in the cleanup phase.
*/
if (likely(mutex_trylock(&maple_keyb_mutex))) {
if (buf[1] == mapledev->function) {
memcpy(kbd->new, buf + 2, 8);
dc_scan_kbd(kbd);
}
mutex_unlock(&maple_keyb_mutex);
}
}
static int probe_maple_kbd(struct device *dev)
{
struct maple_device *mdev;
struct maple_driver *mdrv;
int i, error;
struct dc_kbd *kbd;
struct input_dev *idev;
mdev = to_maple_dev(dev);
mdrv = to_maple_driver(dev->driver);
kbd = kzalloc(sizeof(struct dc_kbd), GFP_KERNEL);
if (!kbd) {
error = -ENOMEM;
goto fail;
}
idev = input_allocate_device();
if (!idev) {
error = -ENOMEM;
goto fail_idev_alloc;
}
kbd->dev = idev;
memcpy(kbd->keycode, dc_kbd_keycode, sizeof(kbd->keycode));
idev->name = mdev->product_name;
idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
idev->keycode = kbd->keycode;
idev->keycodesize = sizeof(unsigned short);
idev->keycodemax = ARRAY_SIZE(kbd->keycode);
idev->id.bustype = BUS_HOST;
idev->dev.parent = &mdev->dev;
for (i = 0; i < NR_SCANCODES; i++)
__set_bit(dc_kbd_keycode[i], idev->keybit);
__clear_bit(KEY_RESERVED, idev->keybit);
input_set_capability(idev, EV_MSC, MSC_SCAN);
error = input_register_device(idev);
if (error)
goto fail_register;
/* Maple polling is locked to VBLANK - which may be just 50/s */
maple_getcond_callback(mdev, dc_kbd_callback, HZ/50,
MAPLE_FUNC_KEYBOARD);
mdev->driver = mdrv;
maple_set_drvdata(mdev, kbd);
return error;
fail_register:
maple_set_drvdata(mdev, NULL);
input_free_device(idev);
fail_idev_alloc:
kfree(kbd);
fail:
return error;
}
static int remove_maple_kbd(struct device *dev)
{
struct maple_device *mdev = to_maple_dev(dev);
struct dc_kbd *kbd = maple_get_drvdata(mdev);
mutex_lock(&maple_keyb_mutex);
input_unregister_device(kbd->dev);
kfree(kbd);
maple_set_drvdata(mdev, NULL);
mutex_unlock(&maple_keyb_mutex);
return 0;
}
static struct maple_driver dc_kbd_driver = {
.function = MAPLE_FUNC_KEYBOARD,
.drv = {
.name = "Dreamcast_keyboard",
.probe = probe_maple_kbd,
.remove = remove_maple_kbd,
},
};
static int __init dc_kbd_init(void)
{
return maple_driver_register(&dc_kbd_driver);
}
static void __exit dc_kbd_exit(void)
{
maple_driver_unregister(&dc_kbd_driver);
}
module_init(dc_kbd_init);
module_exit(dc_kbd_exit);
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