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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2011 by Amaury Pouly
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "button-target.h"
#include "system.h"
#include "system-target.h"
#include "pinctrl-imx233.h"
#include "power-imx233.h"
#include "string.h"
#include "usb.h"
#include "touchscreen.h"
#include "touchscreen-imx233.h"
struct touch_calibration_point
{
short px_x; /* known pixel value */
short px_y;
short val_x; /* touchscreen value at the known pixel */
short val_y;
};
static struct touch_calibration_point topleft, bottomright;
/* Amaury Pouly: values on my device
* Portait: (x and y are swapped)
* (0,0) = 200, 300
* (240,400) = 3900, 3800
* Landscape:
* (0,0) = 200, 3800
* (400,240) = 3900, 300
*/
void button_init_device(void)
{
#if CONFIG_ORIENTATION == SCREEN_PORTRAIT
topleft.val_x = 300;
topleft.val_y = 200;
bottomright.val_x = 3800;
bottomright.val_y = 3900;
#else
topleft.val_x = 300;
topleft.val_y = 3900;
bottomright.val_x = 3800;
bottomright.val_y = 200;
#endif
topleft.px_x = 0;
topleft.px_y = 0;
bottomright.px_x = LCD_WIDTH;
bottomright.px_y = LCD_HEIGHT;
imx233_touchscreen_init();
imx233_touchscreen_enable(true);
/* power button */
imx233_pinctrl_acquire(0, 11, "power");
imx233_pinctrl_set_function(0, 11, PINCTRL_FUNCTION_GPIO);
imx233_pinctrl_enable_gpio(0, 11, false);
/* select button */
imx233_pinctrl_acquire(0, 14, "select");
imx233_pinctrl_set_function(0, 14, PINCTRL_FUNCTION_GPIO);
imx233_pinctrl_enable_gpio(0, 14, false);
}
static int touch_to_pixels(int *val_x, int *val_y)
{
short x,y;
#if CONFIG_ORIENTATION == SCREEN_PORTRAIT
x = *val_y;
y = *val_x;
#else
x = *val_x;
y = *val_y;
#endif
x = (x - topleft.val_x) * (bottomright.px_x - topleft.px_x) / (bottomright.val_x - topleft.val_x) + topleft.px_x;
y = (y - topleft.val_y) * (bottomright.px_y - topleft.px_y) / (bottomright.val_y - topleft.val_y) + topleft.px_y;
x = MAX(0, MIN(x, LCD_WIDTH - 1));
y = MAX(0, MIN(y, LCD_HEIGHT - 1));
*val_x = x;
*val_y = y;
return (x<<16)|y;
}
static int touchscreen_read_device(int *data)
{
int x, y;
if(!imx233_touchscreen_get_touch(&x, &y))
return 0;
if(data)
*data = touch_to_pixels(&x, &y);
return touchscreen_to_pixels(x, y, data);
}
int button_read_device(int *data)
{
int res = 0;
/* B0P11: #power
* B0P14: #select */
if(!imx233_pinctrl_get_gpio(0, 11))
res |= BUTTON_POWER;
if(!imx233_pinctrl_get_gpio(0, 14))
res |= BUTTON_MENU;
return res | touchscreen_read_device(data);
}
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