95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
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/***************************************************************************
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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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*
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* Copyright (c) 2013 Lorenzo Miori
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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 <unistd.h>
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#include <fcntl.h>
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#include "sys/ioctl.h"
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#include "mcs5000.h"
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#include "ioctl-ypr1.h"
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/* TODO Settings like hand and sensitivity will be lost when shutting device off!! */
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static int mcs5000_dev = -1;
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static int mcs5000_hand_setting = RIGHT_HAND;
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void mcs5000_init(void)
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{
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mcs5000_dev = open("/dev/r1Touch", O_RDONLY);
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}
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void mcs5000_close(void)
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{
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if (mcs5000_dev > 0)
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close(mcs5000_dev);
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}
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void mcs5000_power(void)
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{
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ioctl(mcs5000_dev, DEV_CTRL_TOUCH_ON);
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ioctl(mcs5000_dev, DEV_CTRL_TOUCH_IDLE);
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mcs5000_set_hand(mcs5000_hand_setting);
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}
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void mcs5000_shutdown(void)
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{
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/* save setting before shutting down the device */
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ioctl(mcs5000_dev, DEV_CTRL_TOUCH_FLUSH);
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ioctl(mcs5000_dev, DEV_CTRL_TOUCH_RESET);
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ioctl(mcs5000_dev, DEV_CTRL_TOUCH_OFF);
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}
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void mcs5000_set_hand(int hand)
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{
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switch (hand)
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{
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case RIGHT_HAND:
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ioctl(mcs5000_dev, DEV_CTRL_TOUCH_RIGHTHAND);
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break;
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case LEFT_HAND:
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ioctl(mcs5000_dev, DEV_CTRL_TOUCH_LEFTHAND);
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break;
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default:
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break;
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}
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mcs5000_hand_setting = hand;
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}
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void mcs5000_set_sensitivity(int level)
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{
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ioctl(mcs5000_dev, DEV_CTRL_TOUCH_SET_SENSE, &level);
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}
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int mcs5000_read(struct mcs5000_raw_data *touchData)
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{
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/* work around GCC bug: aligned attribute is not applied to automatic
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* variables, and apparently this structure has a large alignment requirement
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* (if it's only automatic with implicit 8-byte alignment then the
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* touchscreen misbehaves). The bug seems fixed in gcc 4.6.x
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* See http://http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16660
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* Also: packet and aligned attributes don't really work together so
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* the aligned attribute cannot be attached to the struct declaration */
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static struct mcs5000_raw_data touchpad_data __attribute__((aligned(256)));
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ssize_t ret;
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ret = read(mcs5000_dev, &touchpad_data, sizeof(struct mcs5000_raw_data));
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*touchData = touchpad_data;
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return ret;
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}
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