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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Mark Arigo
*
* 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 "cpu.h"
#include "lcd.h"
#include "kernel.h"
#include "system.h"
/* send LCD data */
static void lcd_send_data(unsigned data)
{
while (LCD1_CONTROL & LCD1_BUSY_MASK); /* wait for LCD */
LCD1_DATA = data;
}
/* send LCD command */
static void lcd_send_command(unsigned cmd)
{
while (LCD1_CONTROL & LCD1_BUSY_MASK); /* wait for LCD */
LCD1_CMD = cmd;
}
/* LCD init */
void lcd_init_device(void)
{
int i;
DEV_INIT1 &= ~0xfc000000;
i = DEV_INIT1;
DEV_INIT1 = i;
DEV_INIT2 &= ~0x400;
udelay(10000);
LCD1_CONTROL &= ~0x4;
udelay(15);
LCD1_CONTROL |= 0x4;
udelay(10);
LCD1_CONTROL = 0x690;
LCD1_CONTROL = 0x694;
/* OF just reads these */
i = LCD1_CONTROL;
i = inl(0x70003004);
i = LCD1_CMD;
i = inl(0x7000300c);
#if 0
/* this is skipped in the OF */
LCD1_CONTROL &= ~0x200;
LCD1_CONTROL &= ~0x800;
LCD1_CONTROL &= ~0x400;
#endif
LCD1_CONTROL |= 0x1;
udelay(15000);
lcd_send_command(0xe2);
lcd_send_command(0x2f);
lcd_send_command(0x26);
lcd_send_command(0xcc);
lcd_send_command(0xe8);
lcd_send_command(0x81);
lcd_send_command(0);
lcd_send_command(0x40);
lcd_send_command(0xa6);
lcd_send_command(0x88);
lcd_send_command(0xb0);
lcd_send_command(0x10);
lcd_send_command(0);
}
/*** hardware configuration ***/
int lcd_default_contrast(void)
{
return DEFAULT_CONTRAST_SETTING;
}
void lcd_set_contrast(int val)
{
lcd_send_command(0x81);
lcd_send_command(val);
}
void lcd_set_invert_display(bool yesno)
{
/* TODO: Implement lcd_set_invert_display() */
(void)yesno;
}
/* turn the display upside down (call lcd_update() afterwards) */
void lcd_set_flip(bool yesno)
{
/* TODO: Implement lcd_set_flip() */
(void)yesno;
}
/*** update functions ***/
/* Performance function that works with an external buffer
note that by and bheight are in 8-pixel units! */
void lcd_blit(const unsigned char* data, int x, int by, int width,
int bheight, int stride)
{
/* TODO: Implement lcd_blit() */
(void)data;
(void)x;
(void)by;
(void)width;
(void)bheight;
(void)stride;
}
/* Performance function that works with an external buffer
note that by and bheight are in 4-pixel units! */
void lcd_grey_phase_blit(const struct grey_data *data, int x, int by,
int width, int bheight, int stride)
{
/* TODO: Implement lcd_grey_phase_blit() */
(void)data;
(void)x;
(void)by;
(void)width;
(void)bheight;
(void)stride;
}
/* Update the display.
This must be called after all other LCD functions that change the display. */
void lcd_update(void)
{
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
}
/* Update a fraction of the display. */
void lcd_update_rect(int x0, int y0, int width, int height)
{
unsigned char *addr;
unsigned int cmd0, cmd1, cmd2;
int r, c, x1, y1, start_row, last_row;
x1 = (x0 + width) - 1;
y1 = (y0 + height) - 1;
if ((x1 <= 0) || (y1 <= 0))
return;
if(x1 >= LCD_WIDTH)
x1 = LCD_WIDTH - 1;
if(y1 >= LCD_HEIGHT)
y1 = LCD_HEIGHT - 1;
start_row = y0/8;
last_row = y1/8;
cmd1 = (x0 & 0xff) >> 4;
cmd1 = (cmd1 + 5) | 0x10;
cmd2 = x0 & 0xf;
for (r = start_row; r <= last_row; r++) {
cmd0 = (r & 0xff) | 0xb0;
lcd_send_command(cmd0);
lcd_send_command(cmd1);
lcd_send_command(cmd2);
addr = (unsigned char*)&lcd_framebuffer[r][x0];
for (c = x0; c <= x1; c++)
lcd_send_data(*(addr++));
}
lcd_send_command(0xaf);
}
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