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SA9200: Give LCD about an 8% speedup. Sync optional LCD settings to defaults in lcd_init_device.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29029 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2011-01-11 04:33:57 +00:00
parent 0dd74ca722
commit ce703c85d9
1 changed files with 37 additions and 10 deletions
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47
firmware/target/arm/philips/sa9200/lcd-sa9200.c
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@ -84,6 +84,15 @@ static inline void lcd_wait_write(void)
while (LCD1_CONTROL & LCD1_BUSY_MASK);
}
/* send LCD pixel */
static inline void lcd_send_pixel(unsigned pixel)
{
lcd_wait_write();
*(volatile uint8_t *)&LCD1_DATA = pixel >> 8;
lcd_wait_write();
*(volatile uint8_t *)&LCD1_DATA = pixel;
}
/* send LCD data */
static void lcd_send_data(unsigned data)
{
@ -129,11 +138,14 @@ void lcd_init_device(void)
udelay(30000);
#endif
/* Already on */
power_on = true;
display_on = true;
invert = false;
flip = false;
contrast = DEFAULT_CONTRAST_SETTING;
/* Reset the options */
lcd_set_invert_display(false);
lcd_set_flip(false);
lcd_set_contrast(DEFAULT_CONTRAST_SETTING);
}
#ifdef HAVE_LCD_SLEEP
@ -493,7 +505,8 @@ void lcd_update(void)
do
{
lcd_send_data(*addr++);
lcd_send_pixel(*addr++);
lcd_send_pixel(*addr++);
}
while (addr < end);
}
@ -527,11 +540,25 @@ void lcd_update_rect(int x, int y, int width, int height)
lcd_write_reg(R_RAM_ADDR_SET, (y << 8) | x);
lcd_send_command(R_WRITE_DATA_2_GRAM);
do {
int w = width;
do {
lcd_send_data(*addr++);
} while (--w > 0);
do
{
int w = width - 1;
if (w > 0)
{
do
{
lcd_send_pixel(*addr++);
lcd_send_pixel(*addr++);
w -= 2;
}
while (w > 0);
}
if (w == 0)
lcd_send_pixel(*addr++); /* odd width */
addr += LCD_WIDTH - width;
} while (--height > 0);
}
while (--height > 0);
}