dcd71e66bd
Saves 100+ bytes (50 of it in iram), saves a bit of power Internal LCD clock decreased but with added efficiency of drawing routines loses only around 2 Hz on the scanrate (~75Hz) while fps is slightly increased Column offsets are now calculated outside the loops saving a few instructions Passing a LCD_NOP command after lcd_update turns off Data/Cmd# gpio saving a bit more power Added a function lcd_write_cmd_triple() that allows 3 commands to be sent at once when enabled with LCD_USE_FIFO_FOR_COMMANDS it sends them back to back without checking FIFO status in between or sending to thhe D/C# Gpio. Makes an assumption about the FIFO being large enough to accept 3 commands after being emptied which should be the case on the clipv1, clipv2, clipplus. I have only enabled it for the clip plus as thats the only device I have to test it on. On clip+ the SSP clock is now turned off when screen is off Change-Id: Ib5fd24697bfe4ac8b8ee017361e789e4a7910d21
127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2008 François Dinel
|
|
* Copyright (C) 2008-2009 Rafaël Carré
|
|
*
|
|
* 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 "lcd.h"
|
|
#include "lcd-clip.h"
|
|
#include "system.h"
|
|
#include "cpu.h"
|
|
#include "ascodec.h"
|
|
|
|
#define LCD_DELAY 1
|
|
|
|
int lcd_hw_init(void)
|
|
{
|
|
/* DBOP initialisation, do what OF does */
|
|
CGU_DBOP = (1<<3) | AS3525_DBOP_DIV;
|
|
|
|
GPIOB_AFSEL = 0x08; /* DBOP on pin 3 */
|
|
GPIOC_AFSEL = 0x0f; /* DBOP on pins 3:0 */
|
|
|
|
DBOP_CTRL = 0x51008;
|
|
DBOP_TIMPOL_01 = 0x6E167;
|
|
DBOP_TIMPOL_23 = 0xA167E06F;
|
|
|
|
GPIOA_DIR |= 0x33; /* pins 5:4 and 1:0 out */
|
|
GPIOB_DIR |= 0x40; /* pin 6 out */
|
|
|
|
GPIOA_PIN(1) = (1<<1);
|
|
GPIOA_PIN(0) = (1<<0);
|
|
GPIOA_PIN(4) = 0;
|
|
GPIOB_PIN(6) = (1<<6);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void lcd_write_command(int byte)
|
|
{
|
|
volatile int i = 0;
|
|
while(i<LCD_DELAY) i++;
|
|
|
|
/* unset D/C# (data or command) */
|
|
GPIOA_PIN(5) = 0;
|
|
|
|
/* Write command */
|
|
/* Only bits 15:12 and 3:0 of DBOP_DOUT are meaningful */
|
|
DBOP_DOUT = (byte << 8) | byte;
|
|
|
|
/* While push fifo is not empty */
|
|
while ((DBOP_STAT & (1<<10)) == 0)
|
|
;
|
|
}
|
|
|
|
void lcd_write_cmd_triplet(int cmd1, int cmd2, int cmd3)
|
|
{
|
|
#ifndef LCD_USE_FIFO_FOR_COMMANDS
|
|
lcd_write_command(cmd1);
|
|
lcd_write_command(cmd2);
|
|
lcd_write_command(cmd3);
|
|
#else
|
|
/* combine writes to data register */
|
|
|
|
while ((DBOP_STAT & (1<<10)) == 0) /* While push fifo is not empty */
|
|
;
|
|
/* FIFO is empty at this point */
|
|
|
|
/* unset D/C# (data or command) */
|
|
GPIOA_PIN(5) = 0;
|
|
|
|
/* Write command */
|
|
/* !!makes assumption FIFO is at least (3) levels deep! */
|
|
/* Only bits 15:12 and 3:0 of DBOP_DOUT are meaningful */
|
|
DBOP_DOUT = (cmd1 << 8) | cmd1;
|
|
DBOP_DOUT = (cmd2 << 8) | cmd2;
|
|
DBOP_DOUT = (cmd3 << 8) | cmd3;
|
|
/* While push fifo is not empty */
|
|
while ((DBOP_STAT & (1<<10)) == 0)
|
|
;
|
|
#endif
|
|
}
|
|
|
|
void lcd_write_data(const fb_data* p_bytes, int count)
|
|
{
|
|
volatile int i = 0;
|
|
while(i<LCD_DELAY) i++;
|
|
|
|
/* set D/C# (data or command) */
|
|
GPIOA_PIN(5) = (1<<5);
|
|
|
|
while (count--)
|
|
{
|
|
/* Write pixels */
|
|
/* Only bits 15:12 and 3:0 of DBOP_DOUT are meaningful */
|
|
DBOP_DOUT = (*p_bytes << 8) | *p_bytes;
|
|
|
|
p_bytes++; /* next packed pixels */
|
|
|
|
/* Wait if push fifo is full */
|
|
while ((DBOP_STAT & (1<<6)) != 0);
|
|
}
|
|
/* While push fifo is not empty */
|
|
while ((DBOP_STAT & (1<<10)) == 0);
|
|
}
|
|
|
|
void lcd_enable_power(bool onoff)
|
|
{
|
|
ascodec_write(AS3514_DCDC15, onoff ? 1 : 0);
|
|
}
|
|
|