From 3eee12ed234da74243c3e90fbd5f4f35256370c7 Mon Sep 17 00:00:00 2001 From: Marcin Bukat Date: Sat, 11 Dec 2010 22:36:28 +0000 Subject: HD300 - tweak lcd_update() (4-5% speedup) git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28797 a1c6a512-1295-4272-9138-f99709370657 --- firmware/target/coldfire/mpio/hd300/lcd-hd300.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) (limited to 'firmware/target/coldfire') diff --git a/firmware/target/coldfire/mpio/hd300/lcd-hd300.c b/firmware/target/coldfire/mpio/hd300/lcd-hd300.c index 10ee59571e..31087a5d43 100644 --- a/firmware/target/coldfire/mpio/hd300/lcd-hd300.c +++ b/firmware/target/coldfire/mpio/hd300/lcd-hd300.c @@ -202,17 +202,16 @@ void lcd_blit_grey_phase(unsigned char *values, unsigned char *phases, void lcd_update(void) ICODE_ATTR; void lcd_update(void) { - int y; - /* Copy display bitmap to hardware */ - for (y = 0; y < LCD_FBHEIGHT; y++) - { - lcd_write_command_ex(LCD_CNTL_PAGE, y, -1); - lcd_write_command_ex(LCD_CNTL_COLUMN, 0, -1); + /* Setup initial PAGE and COLUMN address + * the addressing circuit will take care of the rest + */ + lcd_write_command_ex(LCD_CNTL_PAGE, 0, -1); + lcd_write_command_ex(LCD_CNTL_COLUMN, 0, -1); + lcd_write_command(LCD_CNTL_DATA_WRITE); - lcd_write_command(LCD_CNTL_DATA_WRITE); - lcd_write_data (lcd_framebuffer[y], LCD_WIDTH); - } + /* Copy display bitmap to hardware */ + lcd_write_data (&lcd_framebuffer[0][0], LCD_WIDTH*LCD_FBHEIGHT); } /* Update a fraction of the display. */ -- cgit