0,0 → 1,209 |
/* |
* Copyright (c) 2009 Vineeth Pillai |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup genarch |
* @{ |
*/ |
/** |
* @file |
* @brief pl050 Keyboard processing. |
*/ |
|
#include <genarch/kbrd/kbrd.h> |
#include <genarch/kbrd/scanc.h> |
|
#include <genarch/kbrd/scanc_pl050.h> |
|
#include <synch/spinlock.h> |
#include <console/chardev.h> |
#include <console/console.h> |
#include <proc/thread.h> |
#include <arch.h> |
#include <macros.h> |
|
#define PRESSED_SHIFT (1 << 0) |
#define PRESSED_CAPSLOCK (1 << 1) |
#define LOCKED_CAPSLOCK (1 << 0) |
|
#define PL050_KEY_RELEASE 0xF0 |
#define PL050_ESC_KEY 0xE0 |
#define PL050_CAPS_SCAN_CODE 0x58 |
#define PL050_NUM_SCAN_CODE 0x77 |
#define PL050_SCROLL_SCAN_CODE 0x7E |
|
static bool is_lock_key(wchar_t); |
|
static indev_operations_t kbrd_raw_ops = { |
.poll = NULL |
}; |
|
/** Process release of key. |
* |
* @param sc Scancode of the key being released. |
*/ |
static void key_released(kbrd_instance_t *instance, wchar_t sc) |
{ |
spinlock_lock(&instance->keylock); |
|
switch (sc) { |
case SC_LSHIFT: |
case SC_RSHIFT: |
instance->keyflags &= ~PRESSED_SHIFT; |
break; |
case SC_CAPSLOCK: |
instance->keyflags &= ~PRESSED_CAPSLOCK; |
if (instance->lockflags & LOCKED_CAPSLOCK) |
instance->lockflags &= ~LOCKED_CAPSLOCK; |
else |
instance->lockflags |= LOCKED_CAPSLOCK; |
break; |
default: |
break; |
} |
|
spinlock_unlock(&instance->keylock); |
} |
|
/** Process keypress. |
* |
* @param sc Scancode of the key being pressed. |
*/ |
static void key_pressed(kbrd_instance_t *instance, wchar_t sc) |
{ |
bool letter; |
bool shift; |
bool capslock; |
|
spinlock_lock(&instance->keylock); |
|
switch (sc) { |
case SC_LSHIFT: |
case SC_RSHIFT: |
instance->keyflags |= PRESSED_SHIFT; |
break; |
case SC_CAPSLOCK: |
instance->keyflags |= PRESSED_CAPSLOCK; |
break; |
case SC_SCAN_ESCAPE: |
break; |
default: |
letter = islower(sc_primary_map[sc]); |
shift = instance->keyflags & PRESSED_SHIFT; |
capslock = (instance->keyflags & PRESSED_CAPSLOCK) || |
(instance->lockflags & LOCKED_CAPSLOCK); |
|
if ((letter) && (capslock)) |
shift = !shift; |
|
if (shift) |
indev_push_character(instance->sink, sc_secondary_map[sc]); |
else |
indev_push_character(instance->sink, sc_primary_map[sc]); |
break; |
} |
|
spinlock_unlock(&instance->keylock); |
} |
|
static void kkbrd(void *arg) |
{ |
static int key_released_flag = 0; |
static int is_locked = 0; |
kbrd_instance_t *instance = (kbrd_instance_t *) arg; |
|
while (true) { |
wchar_t sc = indev_pop_character(&instance->raw); |
|
if (sc == PL050_KEY_RELEASE) { |
key_released_flag = 1; |
} else { |
if (key_released_flag) { |
key_released_flag = 0; |
if (is_lock_key(sc)) { |
if (!is_locked) { |
is_locked = 1; |
} else { |
is_locked = 0; |
continue; |
} |
} |
key_released(instance, sc); |
|
} else { |
if (is_lock_key(sc) && is_locked) |
continue; |
key_pressed(instance, sc); |
} |
} |
|
} |
} |
|
kbrd_instance_t *kbrd_init(void) |
{ |
kbrd_instance_t *instance |
= malloc(sizeof(kbrd_instance_t), FRAME_ATOMIC); |
if (instance) { |
instance->thread |
= thread_create(kkbrd, (void *) instance, TASK, 0, "kkbrd", false); |
|
if (!instance->thread) { |
free(instance); |
return NULL; |
} |
|
instance->sink = NULL; |
indev_initialize("kbrd", &instance->raw, &kbrd_raw_ops); |
|
spinlock_initialize(&instance->keylock, "instance_keylock"); |
instance->keyflags = 0; |
instance->lockflags = 0; |
} |
|
return instance; |
} |
|
indev_t *kbrd_wire(kbrd_instance_t *instance, indev_t *sink) |
{ |
ASSERT(instance); |
ASSERT(sink); |
|
instance->sink = sink; |
thread_ready(instance->thread); |
|
return &instance->raw; |
} |
|
static bool is_lock_key(wchar_t sc) |
{ |
return ((sc == PL050_CAPS_SCAN_CODE) || (sc == PL050_NUM_SCAN_CODE) || |
(sc == PL050_SCROLL_SCAN_CODE)); |
} |
|
/** @} |
*/ |