| 0,0 → 1,225 |
|---|
| /* |
| * 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 arm32 |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief pl050 keyboard/mouse driver. |
| * |
| * It takes care of low-level keyboard functions. |
| */ |
| |
| #include <genarch/kbd/key.h> |
| #include <cpu.h> |
| #include <arch/asm.h> |
| #include <arch.h> |
| #include <arch/drivers/pl050.h> |
| #include <console/console.h> |
| #include <interrupt.h> |
| #include <sysinfo/sysinfo.h> |
| #include <ipc/irq.h> |
| |
| #include <arch/debug/print.h> |
| #include <genarch/fb/fb.h> |
| #include <genarch/fb/visuals.h> |
| #include <print.h> |
| |
| #define PL050_KEY_RELEASE 0xF0 |
| #define PL050_ESC_KEY 0xE0 |
| |
| static void pl050_suspend(chardev_t *); |
| static void pl050_resume(chardev_t *); |
| |
| static chardev_operations_t ops = { |
| .suspend = pl050_suspend, |
| .resume = pl050_resume, |
| .read = pl050_key_read |
| }; |
| |
| /** Structure for pl050's IRQ. */ |
| static irq_t pl050_kbd_irq; |
| /* static irq_t pl050_mouse_irq; */ |
| static uintptr_t pl050_kbd_pbase; |
| static uintptr_t pl050_kbd_vbase; |
| |
| uint8_t pl050_dataread(void) |
| { |
| return *(uint8_t *)(pl050_kbd_vbase + PL050_DATA); |
| } |
| |
| uint8_t pl050_statusread(void) |
| { |
| return *(uint8_t *)(pl050_kbd_vbase + PL050_STAT); |
| } |
| |
| void pl050_crwrite(uint8_t val) |
| { |
| *(uint8_t *)pl050_kbd_vbase = val; |
| } |
| |
| |
| void pl050_grab(void) |
| { |
| ipl_t ipl = interrupts_disable(); |
| |
| spinlock_lock(&pl050_kbd_irq.lock); |
| pl050_kbd_irq.notif_cfg.notify = false; |
| spinlock_unlock(&pl050_kbd_irq.lock); |
| |
| interrupts_restore(ipl); |
| } |
| |
| void pl050_release(void) |
| { |
| ipl_t ipl = interrupts_disable(); |
| |
| spinlock_lock(&pl050_kbd_irq.lock); |
| if (pl050_kbd_irq.notif_cfg.answerbox) |
| pl050_kbd_irq.notif_cfg.notify = true; |
| spinlock_unlock(&pl050_kbd_irq.lock); |
| |
| interrupts_restore(ipl); |
| } |
| |
| static irq_ownership_t pl050_claim(void) |
| { |
| return IRQ_ACCEPT; |
| } |
| |
| static void pl050_irq_handler(irq_t *irq, void *arg, ...) |
| { |
| static int key_released_flag = 0; |
| static uint8_t prev_char = 0xFF; |
| |
| if (irq->notif_cfg.notify && irq->notif_cfg.answerbox) |
| ipc_irq_send_notif(irq); |
| else { |
| uint8_t data; |
| uint8_t status; |
| |
| if (((status = pl050_statusread()) & PL050_STAT_RXFULL)) { |
| data = pl050_dataread(); |
| |
| if (data == PL050_ESC_KEY) |
| return; |
| |
| if (data == PL050_KEY_RELEASE) { |
| key_released_flag = 1; |
| } else { |
| if (key_released_flag && prev_char == data) { |
| prev_char = 0xFF; |
| key_released(data); |
| } else { |
| key_pressed(data); |
| prev_char = data; |
| } |
| key_released_flag = 0; |
| } |
| } |
| } |
| } |
| |
| /** Initialize pl050. */ |
| void pl050_init(devno_t kbd_devno, inr_t kbd_inr, uintptr_t pbase, uintptr_t vbase) |
| { |
| uint8_t val = 0; |
| chardev_initialize("pl050_kbd", &kbrd, &ops); |
| stdin = &kbrd; |
| |
| irq_initialize(&pl050_kbd_irq); |
| pl050_kbd_irq.devno = kbd_devno; |
| pl050_kbd_irq.inr = kbd_inr; |
| pl050_kbd_irq.claim = pl050_claim; |
| pl050_kbd_irq.handler = pl050_irq_handler; |
| pl050_kbd_pbase = pbase; |
| pl050_kbd_vbase = vbase; |
| irq_register(&pl050_kbd_irq); |
| val = PL050_CR_RXINTR | PL050_CR_INTR | PL050_CR_FKMIC; |
| |
| pl050_crwrite(val); |
| |
| /* reset the data buffer */ |
| pl050_dataread(); |
| |
| sysinfo_set_item_val("kbd", NULL, true); |
| sysinfo_set_item_val("kbd.devno", NULL, kbd_devno); |
| sysinfo_set_item_val("kbd.inr", NULL, kbd_inr); |
| sysinfo_set_item_val("kbd.pbase", NULL, pl050_kbd_pbase); |
| sysinfo_set_item_val("kbd.vbase", NULL, vbase); |
| |
| pl050_grab(); |
| } |
| |
| /* Called from getc(). */ |
| void pl050_resume(chardev_t *d) |
| { |
| } |
| |
| /* Called from getc(). */ |
| void pl050_suspend(chardev_t *d) |
| { |
| } |
| |
| char pl050_key_read(chardev_t *d) |
| { |
| char ch; |
| |
| while(!(ch = active_read_buff_read())) { |
| uint8_t x; |
| while (!(pl050_statusread() & PL050_STAT_RXFULL)) |
| ; |
| x = pl050_dataread(); |
| if (x & KEY_RELEASE) |
| key_released(x ^ KEY_RELEASE); |
| else |
| active_read_key_pressed(x); |
| } |
| return ch; |
| } |
| |
| /** Poll for key press and release events. |
| * |
| * This function can be used to implement keyboard polling. |
| */ |
| void pl050_poll(void) |
| { |
| uint8_t x; |
| |
| while (((x = pl050_statusread() & PL050_STAT_RXFULL))) { |
| x = pl050_dataread(); |
| if (x & KEY_RELEASE) |
| key_released(x ^ KEY_RELEASE); |
| else |
| key_pressed(x); |
| } |
| } |
| |
| /** @} |
| */ |