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M:Robe 500: Fix glitches when using DMA for LCD updates.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22650 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Karl Kurbjun 2009-09-07 17:12:57 +00:00
parent 0633a9aaac
commit 47611321c0
1 changed files with 37 additions and 6 deletions
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43
firmware/target/arm/tms320dm320/mrobe-500/lcd-mr500.c
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@ -27,6 +27,7 @@
#include "string.h"
#include "kernel.h"
#include "memory.h"
#include "mmu-arm.h"
#include "system-target.h"
#include "lcd.h"
#include "lcd-target.h"
@ -280,9 +281,15 @@ static void dma_start_transfer16( char *src, int src_x, int src_y, int stride,
char *dst;
/* Addresses are relative to start of SDRAM */
src = src + (src_y*LCD_HEIGHT + src_x) * pix_width - CONFIG_SDRAM_START;
dst = (char *)FRAME + (y * LCD_HEIGHT + x) * pix_width
- CONFIG_SDRAM_START;
src = src + (src_y*LCD_HEIGHT + src_x) * pix_width;
dst = (char *)FRAME + (y * LCD_HEIGHT + x) * pix_width;
/* Flush the area that is being copied from. */
clean_dcache_range(src, (stride*pix_width*width));
/* Addresses are relative to start of SDRAM */
src -= CONFIG_SDRAM_START;
dst -= CONFIG_SDRAM_START;
/* Enable Clocks */
IO_CLK_MOD1 |= 1<<8;
@ -346,10 +353,18 @@ static void dma_start_transfer16( char *src, int src_x, int src_y, int stride,
int x, int y,
int width, int height, int pix_width) {
char *dst;
/* Addresses are relative to start of SDRAM */
src = src + (src_x*LCD_HEIGHT + src_y) * pix_width - CONFIG_SDRAM_START;
/* Calculate starting place */
src = src + (src_x*LCD_HEIGHT + src_y) * pix_width;
dst = (char *)FRAME + (LCD_HEIGHT*(LCD_WIDTH-1) - x * LCD_HEIGHT + y)
* pix_width - CONFIG_SDRAM_START;
* pix_width;
/* Flush the area that is being copied from. */
clean_dcache_range(src, (stride*pix_width*width));
/* Addresses are relative to start of SDRAM */
src -= CONFIG_SDRAM_START;
dst -= CONFIG_SDRAM_START;
/* Enable Clocks */
IO_CLK_MOD1 |= 1<<8;
@ -458,8 +473,24 @@ void lcd_update_rect(int x, int y, int width, int height)
#else
#if defined(LCD_STRIDEFORMAT) && LCD_STRIDEFORMAT == VERTICAL_STRIDE
#if defined(LCD_USE_DMA)
dma_start_transfer16( (char *)lcd_framebuffer, x, y, LCD_HEIGHT,
x, y, width, height, 2);
#else
fb_data *src;
fb_data *dst;
src = &lcd_framebuffer[0][0] + (x*LCD_HEIGHT + y);
dst = FRAME + (LCD_HEIGHT*(LCD_WIDTH-1) - x * LCD_HEIGHT + y);
while(width > 0) {
memcpy(src, dst, height);
src += LCD_HEIGHT;
dst -= LCD_HEIGHT;
width--;
}
#endif
#else
register fb_data *dst, *src;
src = &lcd_framebuffer[y][x];