128 lines
3.5 KiB
C
128 lines
3.5 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) 2011 by Amaury Pouly
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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 "button-target.h"
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#include "system.h"
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#include "system-target.h"
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#include "pinctrl-imx233.h"
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#include "power-imx233.h"
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#include "string.h"
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#include "usb.h"
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#include "touchscreen.h"
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#include "touchscreen-imx233.h"
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struct touch_calibration_point
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{
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short px_x; /* known pixel value */
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short px_y;
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short val_x; /* touchscreen value at the known pixel */
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short val_y;
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};
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static struct touch_calibration_point topleft, bottomright;
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/* Amaury Pouly: values on my device
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* Portait: (x and y are swapped)
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* (0,0) = 200, 300
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* (240,400) = 3900, 3800
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* Landscape:
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* (0,0) = 200, 3800
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* (400,240) = 3900, 300
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*/
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void button_init_device(void)
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{
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#if CONFIG_ORIENTATION == SCREEN_PORTRAIT
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topleft.val_x = 300;
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topleft.val_y = 200;
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bottomright.val_x = 3800;
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bottomright.val_y = 3900;
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#else
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topleft.val_x = 300;
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topleft.val_y = 3900;
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bottomright.val_x = 3800;
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bottomright.val_y = 200;
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#endif
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topleft.px_x = 0;
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topleft.px_y = 0;
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bottomright.px_x = LCD_WIDTH;
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bottomright.px_y = LCD_HEIGHT;
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imx233_touchscreen_init();
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imx233_touchscreen_enable(true);
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/* power button */
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imx233_pinctrl_acquire_pin(0, 11, "power");
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imx233_set_pin_function(0, 11, PINCTRL_FUNCTION_GPIO);
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imx233_enable_gpio_output(0, 11, false);
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/* select button */
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imx233_pinctrl_acquire_pin(0, 14, "select");
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imx233_set_pin_function(0, 14, PINCTRL_FUNCTION_GPIO);
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imx233_enable_gpio_output(0, 14, false);
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}
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static int touch_to_pixels(int *val_x, int *val_y)
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{
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short x,y;
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#if CONFIG_ORIENTATION == SCREEN_PORTRAIT
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x = *val_y;
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y = *val_x;
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#else
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x = *val_x;
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y = *val_y;
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#endif
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x = (x - topleft.val_x) * (bottomright.px_x - topleft.px_x) / (bottomright.val_x - topleft.val_x) + topleft.px_x;
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y = (y - topleft.val_y) * (bottomright.px_y - topleft.px_y) / (bottomright.val_y - topleft.val_y) + topleft.px_y;
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x = MAX(0, MIN(x, LCD_WIDTH - 1));
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y = MAX(0, MIN(y, LCD_HEIGHT - 1));
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*val_x = x;
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*val_y = y;
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return (x<<16)|y;
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}
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static int touchscreen_read_device(int *data)
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{
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int x, y;
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if(!imx233_touchscreen_get_touch(&x, &y))
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return 0;
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if(data)
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*data = touch_to_pixels(&x, &y);
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return touchscreen_to_pixels(x, y, data);
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}
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int button_read_device(int *data)
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{
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int res = 0;
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/* B0P11: #power
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* B0P14: #select */
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uint32_t mask = imx233_get_gpio_input_mask(0, 0x4800);
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if(!(mask & 0x800))
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res |= BUTTON_POWER;
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if(!(mask & 0x4000))
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res |= BUTTON_MENU;
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return res | touchscreen_read_device(data);
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}
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