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Lcd save function pointer to frame buffer get_address_fn before loops

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Calling multiple levels of indirection in a loop slows things down

Really these need to be rewritten to take a start and end address
like most of the rest of the codebase

But this is safer without having test hardware in hand

Change-Id: Idae7b92ee779d020ed7fcc9334e2d5a9c710e64d
This commit is contained in:
William Wilgus 2022-03-21 18:54:52 -04:00
parent 60e5786b48
commit cfeeb7889d
23 changed files with 78 additions and 40 deletions
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6
firmware/target/arm/lcd-ssd1815.c
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@ -221,6 +221,7 @@ void lcd_update(void)
{
int y;
void* (*fbaddr)(int x, int y) = FB_CURRENTVP_BUFFER->get_address_fn;
/* Copy display bitmap to hardware */
for (y = 0; y < LCD_FBHEIGHT; y++)
{
@ -228,7 +229,7 @@ void lcd_update(void)
lcd_write_command (LCD_CNTL_HIGHCOL | ((xoffset >> 4) & 0xf));
lcd_write_command (LCD_CNTL_LOWCOL | (xoffset & 0xf));
lcd_write_data (FBADDR(0, y), LCD_WIDTH);
lcd_write_data (fbaddr(0,y), LCD_WIDTH);
}
}
@ -249,6 +250,7 @@ void lcd_update_rect(int x, int y, int width, int height)
if(ymax >= LCD_FBHEIGHT)
ymax = LCD_FBHEIGHT-1;
void* (*fbaddr)(int x, int y) = FB_CURRENTVP_BUFFER->get_address_fn;
/* Copy specified rectange bitmap to hardware */
for (; y <= ymax; y++)
{
@ -256,6 +258,6 @@ void lcd_update_rect(int x, int y, int width, int height)
lcd_write_command (LCD_CNTL_HIGHCOL | (((x+xoffset) >> 4) & 0xf));
lcd_write_command (LCD_CNTL_LOWCOL | ((x+xoffset) & 0xf));
lcd_write_data (FBADDR(x,y), width);
lcd_write_data (fbaddr(x,y), width);
}
}