| 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)); |
| } |
| |
| /** @} |
| */ |