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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2004 by Linus Nielsen Feltzing
*
* 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.
*
****************************************************************************/
/*
Thanks Hein-Pieter van Braam for initial work.
Mostly based on lcd-h300.c, adapted for the iaudio 7 by Vitja Makarov
*/
#include <config.h>
#include <kernel.h>
#include <cpu.h>
#include <lcd.h>
#include <system-target.h>
#include "hd66789r.h"
static bool display_on = false; /* is the display turned on? */
static inline void lcd_write_reg(int reg, int data)
{
GPIOA &= ~0x400;
outw(0, 0x50010000);
outw(reg << 1, 0x50010000);
GPIOA |= 0x400;
outw((data & 0xff00) >> 7, 0x50010008);
outw((data << 24) >> 23, 0x50010008);
}
static void lcd_write_cmd(int reg)
{
GPIOA &= ~0x400;
outw(0, 0x50010000);
outw(reg << 1, 0x50010000);
GPIOA |= 0x400;
}
/* Do what OF do */
static void lcd_delay(int x)
{
int i;
x *= 0xc35;
for (i = 0; i < x * 8; i++) {
}
}
static void _display_on(void)
{
GPIOA_DIR |= 0x8000 | 0x400;
GPIOA |= 0x8000;
/* power setup */
lcd_write_reg(R_START_OSC, 0x0001);
lcd_delay(0xf);
lcd_write_reg(R_DISP_CONTROL1, 0x000);
lcd_delay(0xa);
lcd_write_reg(R_POWER_CONTROL2, 0x0002);
lcd_write_reg(R_POWER_CONTROL3, 0x000a);
lcd_write_reg(R_POWER_CONTROL4, 0xc5a);
lcd_write_reg(R_POWER_CONTROL1, 0x0004);
lcd_write_reg(R_POWER_CONTROL1, 0x0134);
lcd_write_reg(R_POWER_CONTROL2, 0x0111);
lcd_write_reg(R_POWER_CONTROL3, 0x001c);
lcd_delay(0x28);
lcd_write_reg(R_POWER_CONTROL4, 0x2c40);
lcd_write_reg(R_POWER_CONTROL1, 0x0510);
lcd_delay(0x3c);
/* lcd init 2 */
lcd_write_reg(R_DRV_OUTPUT_CONTROL, 0x0113);
lcd_write_reg(R_DRV_WAVEFORM_CONTROL, 0x0700);
lcd_write_reg(R_ENTRY_MODE, 0x1038);
lcd_write_reg(R_DISP_CONTROL2, 0x0508); // 0x3c8, TMM
lcd_write_reg(R_DISP_CONTROL3, 0x0000);
lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x0003);
lcd_write_reg(R_RAM_ADDR_SET, 0x0000);
lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0406);
lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0303);
lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0000);
lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0305);
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0404);
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0000);
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0000);
lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0503);
lcd_write_reg(R_GAMMA_AMP_ADJ_RES_POS, 0x1d05);
lcd_write_reg(R_GAMMA_AMP_AVG_ADJ_RES_NEG, 0x1d05);
lcd_write_reg(R_VERT_SCROLL_CONTROL, 0x0000);
lcd_write_reg(R_1ST_SCR_DRV_POS, 0x9f00);
lcd_write_reg(R_2ND_SCR_DRV_POS, 0x9f00);
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 0x7f00);
lcd_write_reg(R_VERT_RAM_ADDR_POS, 0x9f00);
/* lcd init 3 */
lcd_write_reg(R_POWER_CONTROL1, 0x4510);
lcd_write_reg(R_DISP_CONTROL1, 0x0005);
lcd_delay(0x28);
lcd_write_reg(R_DISP_CONTROL1, 0x0025);
lcd_write_reg(R_DISP_CONTROL1, 0x0027);
lcd_delay(0x28);
lcd_write_reg(R_DISP_CONTROL1, 0x0037);
display_on = true;
}
void lcd_init_device(void)
{
/* Configure external memory banks */
CSCFG1 = 0x3d500023;
/* may be reset */
GPIOA |= 0x8000;
_display_on();
}
void lcd_enable(bool on)
{
if (display_on == on)
return;
if (on) {
_display_on();
// lcd_call_enable_hook();
} else {
/** Off sequence according to datasheet, p. 130 **/
lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x0002); /* EQ=0, 18 clks/line */
lcd_write_reg(R_DISP_CONTROL1, 0x0036); /* GON=1, DTE=1, REV=1, D1-0=10 */
sleep(2);
lcd_write_reg(R_DISP_CONTROL1, 0x0026); /* GON=1, DTE=0, REV=1, D1-0=10 */
sleep(2);
lcd_write_reg(R_DISP_CONTROL1, 0x0000); /* GON=0, DTE=0, D1-0=00 */
lcd_write_reg(R_POWER_CONTROL1, 0x0000); /* SAP2-0=000, AP2-0=000 */
lcd_write_reg(R_POWER_CONTROL3, 0x0000); /* PON=0 */
lcd_write_reg(R_POWER_CONTROL4, 0x0000); /* VCOMG=0 */
/* datasheet p. 131 */
lcd_write_reg(R_POWER_CONTROL1, 0x0001); /* STB=1: standby mode */
display_on = false;
}
}
bool lcd_enabled(void)
{
return display_on;
}
#define RGB(r,g,b) ((((r)&0x3f) << 12)|(((g)&0x3f) << 6)|(((b)&0x3f)))
void lcd_update(void)
{
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
}
/* todo: need tests */
void lcd_update_rect(int sx, int sy, int width, int height)
{
int x, y;
if (!display_on)
return;
if (width <= 0 || height <= 0) /* nothing to do */
return;
width += sx;
height += sy;
if (width > LCD_WIDTH)
width = LCD_WIDTH;
if (height > LCD_HEIGHT)
height = LCD_HEIGHT;
lcd_write_reg(R_ENTRY_MODE, 0x1028);
/* set update window */
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (LCD_HEIGHT - 1) << 8);
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((width - 1) << 8) | sx);
lcd_write_reg(R_RAM_ADDR_SET, (sx << 8) | (LCD_HEIGHT - sy - 1));
lcd_write_cmd(R_WRITE_DATA_2_GRAM);
for (y = sy; y < height; y++) {
for (x = sx; x < width; x++) {
fb_data c;
unsigned long color;
c = lcd_framebuffer[y][x];
color =
((c & 0x1f) << 1) | ((c & 0x7e0) << 1) | ((c & 0xf800) <<
2);
/* TODO: our color is 18-bit */
outw((color >> 9) & 0x1ff, 0x50010008);
outw((color) & 0x1ff, 0x50010008);
}
}
}
void lcd_set_contrast(int val)
{
(void) val;
}
void lcd_set_invert_display(bool yesno)
{
(void) yesno;
}
void lcd_set_flip(bool yesno)
{
(void) yesno;
}
/* TODO: implement me */
void lcd_blit_yuv(unsigned char *const src[3],
int src_x, int src_y, int stride,
int x, int y, int width, int height)
{
if (!display_on)
return;
width &= ~1; /* stay on the safe side */
height &= ~1;
panicf("%s", __func__);
}
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