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
39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* 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.
|
|
*
|
|
****************************************************************************/
|
|
#ifndef __LCDCLIP_H__
|
|
#define __LCDCLIP_H__
|
|
|
|
#include "config.h"
|
|
|
|
#if !defined(BOOTLOADER) && defined(SANSA_CLIPPLUS) /* only tested for clipplus */
|
|
/* Ensure empty FIFO for lcd commands is at least 3 deep */
|
|
#define LCD_USE_FIFO_FOR_COMMANDS
|
|
#endif
|
|
|
|
void lcd_write_cmd_triplet(int cmd1, int cmd2, int cmd3);
|
|
|
|
/* return variant number: 0 = clipv1, clipv2, old clip+, 1 = newer clip+ */
|
|
int lcd_hw_init(void) INIT_ATTR;
|
|
|
|
/* target-specific power enable */
|
|
void lcd_enable_power(bool onoff);
|
|
|
|
#endif /*__LCDCLIP_H__*/
|