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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 by Jens Arnold
* Based on the work of Alan Korr, Kjell Ericson and others
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include <string.h>
#include "hwcompat.h"
#include "system.h"
#include "lcd.h"
#include "lcd-charcell.h"
#define OLD_LCD_DDRAM ((char)0xB0) /* Display data (characters) */
#define OLD_LCD_CGRAM ((char)0x80) /* Character generator (patterns) */
#define OLD_LCD_ICONRAM ((char)0xE0)
#define OLD_LCD_CONTRAST_SET ((char)0xA8)
#define OLD_LCD_SYSTEM_SET ((char)0x60)
#define OLD_LCD_SET_POWER_SAVE_OSC_CONTROL ((char)0x40)
#define OLD_LCD_SET_POWER_CONTROL ((char)0x50)
#define OLD_LCD_SET_DISPLAY_CONTROL ((char)0x30)
#define NEW_LCD_DDRAM ((char)0x80) /* Display data (characters) */
#define NEW_LCD_CGRAM ((char)0xC0) /* Character generator (patterns) */
#define NEW_LCD_ICONRAM ((char)0x40)
#define NEW_LCD_CONTRAST_SET ((char)0x50)
#define NEW_LCD_FUNCTION_SET ((char)0x10)
#define NEW_LCD_SET_POWER_SAVE_OSC_CONTROL ((char)0x0c)
#define NEW_LCD_SET_POWER_CONTROL_REG ((char)0x20)
#define NEW_LCD_SET_DISPLAY_CONTROL ((char)0x28)
#define NEW_LCD_SET_DOUBLE_HEIGHT ((char)0x08)
#define LCD_CURSOR(x,y) ((char)(lcd_ddram+((y)*16+(x))))
#define LCD_ICON(i) ((char)(lcd_iconram+i))
static bool new_lcd;
static char lcd_contrast_set;
static char lcd_ddram;
static char lcd_cgram;
static char lcd_iconram;
/* hardware configuration */
int lcd_default_contrast(void)
{
return 30;
}
void lcd_set_contrast(int val)
{
lcd_write_command_e(lcd_contrast_set, 31 - val);
}
/* charcell specific */
void lcd_double_height(bool on)
{
if(new_lcd)
lcd_write_command(on ? (NEW_LCD_SET_DOUBLE_HEIGHT|1)
: NEW_LCD_SET_DOUBLE_HEIGHT);
}
void lcd_icon(int icon, bool enable)
{
static const struct {
char pos;
char mask;
} icontab[] = {
{ 0, 0x02}, { 0, 0x08}, { 0, 0x04}, { 0, 0x10}, /* Battery */
{ 2, 0x04}, /* USB */
{ 3, 0x10}, /* Play */
{ 4, 0x10}, /* Record */
{ 5, 0x02}, /* Pause */
{ 5, 0x10}, /* Audio */
{ 6, 0x02}, /* Repeat */
{ 7, 0x01}, /* 1 */
{ 9, 0x04}, /* Volume */
{ 9, 0x02}, { 9, 0x01}, {10, 0x08}, {10, 0x04}, {10, 0x01}, /* Vol 1-5 */
{10, 0x10}, /* Param */
};
static char icon_mirror[11] = {0};
int pos, mask;
pos = icontab[icon].pos;
mask = icontab[icon].mask;
if (enable)
icon_mirror[pos] |= mask;
else
icon_mirror[pos] &= ~mask;
lcd_write_command_e(LCD_ICON(pos), icon_mirror[pos]);
}
/* device specific init */
void lcd_init_device(void)
{
unsigned char data_vector[64];
new_lcd = is_new_player();
if (new_lcd)
{
lcd_contrast_set = NEW_LCD_CONTRAST_SET;
lcd_ddram = NEW_LCD_DDRAM;
lcd_cgram = NEW_LCD_CGRAM;
lcd_iconram = NEW_LCD_ICONRAM;
/* LCD init for cold start */
PBCR2 &= 0xff00; /* Set PB0..PB3 to GPIO */
or_b(0x0f, &PBDRL); /* ... high */
or_b(0x0f, &PBIORL); /* ... and output */
lcd_write_command(NEW_LCD_FUNCTION_SET|1); /* CGRAM selected */
lcd_write_command_e(NEW_LCD_CONTRAST_SET, 0x08);
lcd_write_command(NEW_LCD_SET_POWER_SAVE_OSC_CONTROL|2);
/* oscillator on */
lcd_write_command(NEW_LCD_SET_POWER_CONTROL_REG|7);
/* opamp buffer + voltage booster on */
memset(data_vector, 0x20, 64);
lcd_write_command(NEW_LCD_DDRAM); /* Set DDRAM address */
lcd_write_data(data_vector, 64); /* all spaces */
memset(data_vector, 0, 64);
lcd_write_command(NEW_LCD_CGRAM); /* Set CGRAM address */
lcd_write_data(data_vector, 64); /* zero out */
lcd_write_command(NEW_LCD_ICONRAM); /* Set ICONRAM address */
lcd_write_data(data_vector, 16); /* zero out */
lcd_write_command(NEW_LCD_SET_DISPLAY_CONTROL|1); /* display on */
}
else
{
lcd_contrast_set = OLD_LCD_CONTRAST_SET;
lcd_ddram = OLD_LCD_DDRAM;
lcd_cgram = OLD_LCD_CGRAM;
lcd_iconram = OLD_LCD_ICONRAM;
#if 1
/* LCD init for cold start */
PBCR2 &= 0xff00; /* Set PB0..PB3 to GPIO */
or_b(0x0f, &PBDRL); /* ... high */
or_b(0x0f, &PBIORL); /* ... and output */
lcd_write_command(OLD_LCD_SYSTEM_SET|1); /* CGRAM selected */
lcd_write_command(OLD_LCD_SET_POWER_SAVE_OSC_CONTROL|2);
/* oscillator on */
lcd_write_command(OLD_LCD_SET_POWER_CONTROL|7);
/* voltage regulator, voltage follower and booster on */
memset(data_vector, 0x24, 13);
lcd_write_command(OLD_LCD_DDRAM); /* Set DDRAM address */
lcd_write_data(data_vector, 13); /* all spaces */
lcd_write_command(OLD_LCD_DDRAM + 0x10);
lcd_write_data(data_vector, 13);
lcd_write_command(OLD_LCD_DDRAM + 0x20);
lcd_write_data(data_vector, 13);
memset(data_vector, 0, 32);
lcd_write_command(OLD_LCD_CGRAM); /* Set CGRAM address */
lcd_write_data(data_vector, 32); /* zero out */
lcd_write_command(OLD_LCD_ICONRAM); /* Set ICONRAM address */
lcd_write_data(data_vector, 13); /* zero out */
lcd_write_command(OLD_LCD_ICONRAM + 0x10);
lcd_write_data(data_vector, 13);
lcd_write_command(OLD_LCD_SET_DISPLAY_CONTROL|1); /* display on */
#else
/* archos look-alike code, left here for reference. As soon as the
* rockbox version is confirmed working, this will go away */
{
int i;
PBCR2 &= 0xc000;
PBIOR |= 0x000f;
PBDR |= 0x0002;
PBDR |= 0x0001;
PBDR |= 0x0004;
PBDR |= 0x0008;
for (i=0; i<200; i++) asm volatile ("nop"); /* wait 100 us */
PBDR &= 0xfffd; /* CS low (assert) */
for (i=0; i<100; i++) asm volatile ("nop"); /* wait 50 us */
lcd_write_command(OLD_LCD_SYSTEM_SET|1);
lcd_write_command(OLD_LCD_SET_POWER_SAVE_OSC_CONTROL|2);
lcd_write_command(OLD_LCD_SET_POWER_CONTROL|7);
memset(data_vector, 0x24, 13);
lcd_write_command(OLD_LCD_DDRAM); /* Set DDRAM address */
lcd_write_data(data_vector, 13); /* all spaces */
lcd_write_command(OLD_LCD_DDRAM + 0x10);
lcd_write_data(data_vector, 13);
lcd_write_command(OLD_LCD_DDRAM + 0x20);
lcd_write_data(data_vector, 13);
memset(data_vector, 0, 32);
lcd_write_command(OLD_LCD_CGRAM); /* Set CGRAM address */
lcd_write_data(data_vector, 32); /* zero out */
lcd_write_command(OLD_LCD_ICONRAM); /* Set ICONRAM address */
lcd_write_data(data_vector, 13); /* zero out */
lcd_write_command(OLD_LCD_ICONRAM + 0x10);
lcd_write_data(data_vector, 13);
for (i=0; i<300000; i++) asm volatile ("nop"); /* wait 150 ms */
lcd_write_command(OLD_LCD_SET_DISPLAY_CONTROL|1);
lcd_write_command_e(OLD_LCD_CONTRAST_SET, 0); /* Set contrast */
}
#endif
}
lcd_set_contrast(lcd_default_contrast());
}
/*** Update functions ***/
void lcd_update(void)
{
int y;
for (y = 0; y < lcd_pattern_count; y++)
{
if (lcd_patterns[y].count > 0)
{
lcd_write_command(lcd_cgram | (y << 3));
lcd_write_data(lcd_patterns[y].pattern, 7);
}
}
for (y = 0; y < LCD_HEIGHT; y++)
{
lcd_write_command(LCD_CURSOR(0, y));
lcd_write_data(lcd_charbuffer[y], LCD_WIDTH);
}
if (lcd_cursor.visible)
{
lcd_write_command_e(LCD_CURSOR(lcd_cursor.x, lcd_cursor.y),
lcd_cursor.hw_char);
}
}
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