144 lines
3.9 KiB
C
144 lines
3.9 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id:$
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*
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* Copyright (C) 2009 Szymon Dziok
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* Based on the Iriver H10 and the Philips HD1630 code
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "system.h"
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#include "kernel.h"
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#include "button.h"
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#include "backlight.h"
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#include "powermgmt.h"
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#include "synaptics-mep.h"
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static int int_btn = BUTTON_NONE;
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static int old_pos = -1;
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static int scroll_repeat = BUTTON_NONE;
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static int repeat = 0;
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void button_init_device(void)
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{
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}
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/*
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* Button interrupt handler
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*/
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void button_int(void)
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{
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char data[4];
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int val;
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int_btn = BUTTON_NONE;
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val = touchpad_read_device(data, 4);
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if (data[0] == MEP_BUTTON_HEADER)
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{
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/* Buttons packet */
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if (data[1] & 0x1)
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int_btn |= BUTTON_MENU;
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if (data[1] & 0x2)
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int_btn |= BUTTON_PLAY;
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if (data[1] & 0x4)
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int_btn |= BUTTON_NEXT;
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if (data[1] & 0x8)
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int_btn |= BUTTON_PREV;
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}
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else if (data[0] == MEP_ABSOLUTE_HEADER)
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{
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if (data[1] & MEP_FINGER)
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{
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/* Absolute packet - the finger is on the vertical strip.
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Position ranges from 1-4095, with 1 at the bottom. */
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val = ((data[1] >> 4) << 8) | data[2]; /* position */
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int scr_pos = val >> 8; /* split the scrollstrip into 16 regions */
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if ((old_pos<scr_pos)&&(old_pos!=-1)) int_btn = BUTTON_DOWN;
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if ((old_pos>scr_pos)&&(old_pos!=-1)) int_btn = BUTTON_UP;
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old_pos = scr_pos;
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/* repeat button */
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repeat = 0;
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if (int_btn!=BUTTON_NONE)
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{
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if (int_btn!=scroll_repeat)
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scroll_repeat = int_btn;
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else repeat = BUTTON_REPEAT;
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}
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}
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else
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{
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old_pos = -1;
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scroll_repeat = BUTTON_NONE;
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}
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}
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}
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int button_read_device(void)
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{
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int buttons = int_btn;
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unsigned char state;
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static bool hold_button = false;
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bool hold_button_old;
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hold_button_old = hold_button;
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hold_button = button_hold();
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#ifndef BOOTLOADER
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if (hold_button != hold_button_old)
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{
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backlight_hold_changed(hold_button);
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}
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#endif
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/* device buttons */
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if (!hold_button)
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{
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/* Read Record, OK, C */
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state = GPIOA_INPUT_VAL;
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if ((state & 0x01)==0) buttons|=BUTTON_REC;
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if ((state & 0x40)==0) buttons|=BUTTON_OK;
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if ((state & 0x08)==0) buttons|=BUTTON_CANCEL;
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/* Read POWER button */
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if ((GPIOD_INPUT_VAL & 0x40)==0) buttons|=BUTTON_POWER;
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/* Scrollstrip direct button post - much better response */
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if ((buttons==BUTTON_UP) || (buttons==BUTTON_DOWN))
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{
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queue_post(&button_queue,buttons|repeat,0);
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backlight_on();
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buttonlight_on();
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reset_poweroff_timer();
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buttons = BUTTON_NONE;
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int_btn = BUTTON_NONE;
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repeat = BUTTON_NONE;
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}
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}
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else return BUTTON_NONE;
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return buttons;
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}
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bool button_hold(void)
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{
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/* GPIOK 01000000B - HOLD when bit not set */
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return (GPIOK_INPUT_VAL & 0x40)?false:true;
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}
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