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HD300 - tweak lcd_update() (4-5% speedup)

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28797 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Marcin Bukat 2010-12-11 22:36:28 +00:00
parent cddc042e99
commit 3eee12ed23
1 changed files with 8 additions and 9 deletions
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17
firmware/target/coldfire/mpio/hd300/lcd-hd300.c
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@ -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) ICODE_ATTR;
void lcd_update(void) void lcd_update(void)
{ {
int y;
/* 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);
/* Copy display bitmap to hardware */ /* Copy display bitmap to hardware */
for (y = 0; y < LCD_FBHEIGHT; y++) lcd_write_data (&lcd_framebuffer[0][0], LCD_WIDTH*LCD_FBHEIGHT);
{
lcd_write_command_ex(LCD_CNTL_PAGE, y, -1);
lcd_write_command_ex(LCD_CNTL_COLUMN, 0, -1);
lcd_write_command(LCD_CNTL_DATA_WRITE);
lcd_write_data (lcd_framebuffer[y], LCD_WIDTH);
}
} }
/* Update a fraction of the display. */ /* Update a fraction of the display. */