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rk27xx - implement partial lcd updates

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30624 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Marcin Bukat 2011-10-01 08:57:51 +00:00
parent da09f7f0f1
commit 88455968f4
1 changed files with 20 additions and 11 deletions
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31
firmware/target/arm/rk27xx/lcd-rk27xx.c
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@ -286,21 +286,30 @@ void lcd_init_device()
*/
void lcd_update()
{
unsigned int x,y;
for (y=0; y<240; y++)
for (x=0; x<400; x++)
LCD_DATA = lcd_pixel_transform(lcd_framebuffer[y][x]);
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
}
/* not implemented yet */
void lcd_update_rect(int x, int y, int width, int height)
{
(void)x;
(void)y;
(void)width;
(void)height;
lcd_update();
int px = x, py = y;
int pxmax = x + width, pymax = y + height;
/* addresses setup */
lcd_write_reg(WINDOW_H_START, y);
lcd_write_reg(WINDOW_H_END, pymax-1);
lcd_write_reg(WINDOW_V_START, x);
lcd_write_reg(WINDOW_V_END, pxmax-1);
lcd_write_reg(GRAM_H_ADDR, y);
lcd_write_reg(GRAM_V_ADDR, x);
lcd_cmd(GRAM_WRITE);
for (py=y; py<pymax; py++)
{
for (px=x; px<pxmax; px++)
LCD_DATA = lcd_pixel_transform(lcd_framebuffer[py][px]);
}
}
/* Blit a YUV bitmap directly to the LCD */