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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Maurus Cuelenaere
*
* 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 "config.h"
#include "system.h"
#include "jz4740.h"
#include "button-target.h"
#define BTN_VOL_DOWN (1 << 27)
#define BTN_VOL_UP (1 << 0)
#define BTN_MENU (1 << 1)
#define BTN_OFF (1 << 29)
#define BTN_HOLD (1 << 16)
#define BTN_MASK (BTN_VOL_DOWN | BTN_VOL_UP \
| BTN_MENU | BTN_OFF )
#define TS_AD_COUNT 5
#define M_SADC_CFG_SNUM ((TS_AD_COUNT - 1) << SADC_CFG_SNUM_BIT)
#define SADC_CFG_INIT ( \
(2 << SADC_CFG_CLKOUT_NUM_BIT) | \
SADC_CFG_XYZ1Z2 | \
M_SADC_CFG_SNUM | \
(2 << SADC_CFG_CLKDIV_BIT) | \
SADC_CFG_PBAT_HIGH | \
SADC_CFG_CMD_INT_PEN \
)
static bool pendown_flag = false;
static short x_pos = -1, y_pos = -1, datacount = 0;
static short stable_x_pos = -1, stable_y_pos = -1;
bool button_hold(void)
{
return (~REG_GPIO_PXPIN(3) & BTN_HOLD ? 1 : 0);
}
void button_init_device(void)
{
REG_SADC_ENA = 0;
REG_SADC_STATE &= (~REG_SADC_STATE);
REG_SADC_CTRL = 0x1f;
__cpm_start_sadc();
REG_SADC_CFG = SADC_CFG_INIT;
system_enable_irq(IRQ_SADC);
REG_SADC_SAMETIME = 350;
REG_SADC_WAITTIME = 100;
REG_SADC_STATE &= (~REG_SADC_STATE);
REG_SADC_CTRL &= (~(SADC_CTRL_PENDM | SADC_CTRL_PENUM | SADC_CTRL_TSRDYM));
REG_SADC_ENA = SADC_ENA_TSEN; //| SADC_ENA_PBATEN | SADC_ENA_SADCINEN);
__gpio_port_as_input(3, 29);
__gpio_port_as_input(3, 27);
__gpio_port_as_input(3, 16);
__gpio_port_as_input(3, 1);
__gpio_port_as_input(3, 0);
}
static int touch_to_pixels(short x, short y)
{
/* X:300 -> 3800 Y:300->3900 */
x -= 300;
y -= 300;
#if CONFIG_ORIENTATION == SCREEN_PORTRAIT
x /= 3200 / LCD_WIDTH;
y /= 3600 / LCD_HEIGHT;
y = LCD_HEIGHT - y;
return (x << 16) | y;
#else
x /= 3200 / LCD_HEIGHT;
y /= 3600 / LCD_WIDTH;
y = LCD_WIDTH - y;
x = LCD_HEIGHT - x;
return (y << 16) | x;
#endif
}
int button_read_device(int *data)
{
if(button_hold())
return 0;
unsigned int key = ~(__gpio_get_port(3));
int ret = 0;
if(key & BTN_MASK)
{
if(key & BTN_VOL_DOWN)
ret |= BUTTON_VOL_DOWN;
if(key & BTN_VOL_UP)
ret |= BUTTON_VOL_UP;
if(key & BTN_MENU)
ret |= BUTTON_MENU;
if(key & BTN_OFF)
ret |= BUTTON_POWER;
}
if(pendown_flag)
{
*data = touch_to_pixels(stable_x_pos, stable_y_pos);
ret |= BUTTON_TOUCH;
}
else
*data = 0;
return ret;
}
/*
static enum touchpad_mode current_mode = TOUCHPAD_POINT;
static bool touch_available = false;
static int touchpad_buttons[3][3] =
{
{BUTTON_TOPLEFT, BUTTON_TOPMIDDLE, BUTTON_TOPRIGHT},
{BUTTON_MIDLEFT, BUTTON_CENTER, BUTTON_MIDRIGHT},
{BUTTON_BOTTOMLEFT, BUTTON_BOTTOMMIDDLE, BUTTON_BOTTOMRIGHT}
};
void touchpad_set_mode(enum touchpad_mode mode)
{
current_mode = mode;
}
enum touchpad_mode touchpad_get_mode(void)
{
return current_mode;
}
void button_set_touch_available(void)
{
touch_available = true;
}
*/
/* Interrupt handler */
void SADC(void)
{
unsigned char state;
unsigned char sadcstate;
sadcstate = REG_SADC_STATE;
state = REG_SADC_STATE & (~REG_SADC_CTRL);
REG_SADC_STATE &= sadcstate;
if(state & SADC_CTRL_PENDM)
{
/* Pen down IRQ */
REG_SADC_CTRL &= (~(SADC_CTRL_PENUM | SADC_CTRL_TSRDYM));
REG_SADC_CTRL |= (SADC_CTRL_PENDM);
pendown_flag = true;
}
if(state & SADC_CTRL_PENUM)
{
/* Pen up IRQ */
REG_SADC_CTRL &= (~SADC_CTRL_PENDM );
REG_SADC_CTRL |= SADC_CTRL_PENUM;
pendown_flag = false;
x_pos = -1;
y_pos = -1;
stable_x_pos = -1;
stable_y_pos = -1;
}
if(state & SADC_CTRL_TSRDYM)
{
unsigned int dat;
unsigned short xData, yData;
short tsz1Data, tsz2Data;
dat = REG_SADC_TSDAT;
xData = (dat >> 0) & 0xfff;
yData = (dat >> 16) & 0xfff;
dat = REG_SADC_TSDAT;
tsz1Data = (dat >> 0) & 0xfff;
tsz2Data = (dat >> 16) & 0xfff;
if(!pendown_flag)
return ;
tsz1Data = tsz2Data - tsz1Data;
if((tsz1Data > 15) || (tsz1Data < -15))
{
if(x_pos == -1)
x_pos = xData;
else
x_pos = (x_pos + xData) / 2;
if(y_pos == -1)
y_pos = yData;
else
y_pos = (y_pos + yData) / 2;
}
datacount++;
if(datacount > TS_AD_COUNT - 1)
{
if(x_pos != -1)
{
stable_x_pos = x_pos;
stable_y_pos = y_pos;
x_pos = -1;
y_pos = -1;
}
datacount = 0;
}
}
if(state & SADC_CTRL_PBATRDYM)
{
/* Battery AD IRQ */
}
if(state & SADC_CTRL_SRDYM)
{
/* SADC AD IRQ */
}
}
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