len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-12-08 12:45:26 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

rk27xx lcd code rework

Browse source 
Use DMA engine for fullscreen updates and bypass mode for partial
updates. This gives major boost on rk27generic:
default ARM:AHB:APB 200💯50
HEAD    1/1:  26.3fps 1/4: 105.0fps
patched 1/1: 116.5fps 1/4: 249.5fps

with freq scalling NORMAL mode ARM:AHB:APB 50:50:50
HEAD    1/1:  13.1fps 1/4: 52.5fps
patched 1/1:  54.5fps 1/4: 119.0fps

Tested on rk27generic noname DAP and on Hifimans.

Change-Id: Id9dd4d2d61542c7ea6b5c6336b170d6357cefde9
This commit is contained in:
Andrew Ryabinin 2012-09-25 11:41:12 +04:00 • committed by Marcin Bukat
parent f636aa07df
commit 84134f737f
8 changed files with 352 additions and 137 deletions
Download patch file Download diff file Expand all files Collapse all files

43
firmware/target/arm/rk27xx/rk27generic/lcd-rk27generic.c
View file

@ -5,7 +5,6 @@
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2011 Marcin Bukat
*
@ -37,17 +36,6 @@ static inline void delay_nop(int cycles)
}
/* converts RGB565 pixel into internal lcd bus format */
static unsigned int lcd_pixel_transform(unsigned short rgb565)
{
unsigned int r, g, b;
b = rgb565 & 0x1f;
g = (rgb565 >> 5) & 0x3f;
r = (rgb565 >> 11) & 0x1f;
return r<<19 | g<<10 | b<<3;
}
/* not tested */
static void lcd_sleep(bool sleep)
{
@ -71,7 +59,7 @@ static void lcd_sleep(bool sleep)
lcd_cmd(GRAM_WRITE);
}
static void lcd_display_init(void)
void lcd_display_init(void)
{
unsigned int x, y;
@ -173,10 +161,21 @@ static void lcd_display_init(void)
lcd_sleep(false);
}
void lcd_init_device(void)
void lcd_set_gram_area(int x, int y, int width, int height)
{
lcdif_init(LCDIF_18BIT);
lcd_display_init();
lcdctrl_bypass(1);
LCDC_CTRL |= RGB24B;
/* addresses setup */
lcd_write_reg(WINDOW_H_START, y);
lcd_write_reg(WINDOW_H_END, height-1);
lcd_write_reg(WINDOW_V_START, x);
lcd_write_reg(WINDOW_V_END, width-1);
lcd_write_reg(GRAM_H_ADDR, y);
lcd_write_reg(GRAM_V_ADDR, x);
lcd_cmd(GRAM_WRITE);
LCDC_CTRL &= ~RGB24B;
}
void lcd_update_rect(int x, int y, int width, int height)
@ -184,20 +183,12 @@ void lcd_update_rect(int x, int y, int width, int height)
int px = x, py = y;
int pxmax = x + width, pymax = y + height;
/* addresses setup */
lcd_write_reg(WINDOW_H_START, y);
lcd_write_reg(WINDOW_H_END, pymax-1);
lcd_write_reg(WINDOW_V_START, x);
lcd_write_reg(WINDOW_V_END, pxmax-1);
lcd_write_reg(GRAM_H_ADDR, y);
lcd_write_reg(GRAM_V_ADDR, x);
lcd_cmd(GRAM_WRITE);
lcd_set_gram_area(x, y, pxmax, pymax);
for (py=y; py<pymax; py++)
{
for (px=x; px<pxmax; px++)
LCD_DATA = lcd_pixel_transform(*FBADDR(px,py));
LCD_DATA = *FBADDR(px,py);
}
}

26
firmware/target/arm/rk27xx/rk27generic/lcd-target.h Normal file
View file

@ -0,0 +1,26 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2012 Andrew Ryabinin
*
*
* 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 LCD_TARGET_H
#define LCD_TARGET_H
#define LCD_DATABUS_WIDTH LCDIF_18BIT
#endif