s5pc110: fb: corrected samsung logo.

Signed-off-by: daeinki <inki.dae@samsung.com>

diff --git a/drivers/video/s5p-fb.c b/drivers/video/s5p-fb.c
index af56742..656f477 100644 (file)
--- a/drivers/video/s5p-fb.c
+++ b/drivers/video/s5p-fb.c
@@ -175,10 +175,10 @@ static void lcd_test(void)
                        makepixel8888(0, 255, 255, 255));
 }
 
-int convrgb565_to_rgb888(unsigned short rgb565, unsigned int sw)
+int conv_rgb565_to_rgb888(unsigned short rgb565, unsigned int sw)
 {
        char red, green, blue;
-       unsigned int threshold = 100;
+       unsigned int threshold = 150;
 
        red = (rgb565 & 0xF800) >> 11;
        green = (rgb565 & 0x7E0) >> 5;
@@ -188,7 +188,7 @@ int convrgb565_to_rgb888(unsigned short rgb565, unsigned int sw)
        green = green << 2;
        blue = blue << 3;
 
-       /* correct pixel value because of drawing samsung logo. */
+       /* correct error pixels of samsung logo. */
        if (sw) {
                if (red > threshold)
                        red = 255;
@@ -215,14 +215,23 @@ void draw_bitmap(void *lcdbase, int x, int y, int w, int h, unsigned long *bmp)
 
 void _draw_samsung_logo(void *lcdbase, int x, int y, int w, int h, unsigned short *bmp)
 {
-       int i, j;
+       int i, j, error_range = 40;
        short k = 0;
+       unsigned int pixel;
        unsigned long *fb = (unsigned  long*)lcdbase;
 
        for (j = y; j < (y + h); j++) {
-               for (i = x; i < (x + w); i++)
-                       *(fb + (j * PANEL_WIDTH) + i) =
-                               convrgb565_to_rgb888(*(bmp + k++), 1);
+               for (i = x; i < (x + w); i++) {
+                       pixel = (*(bmp + k++));
+
+                       /* 40 lines under samsung logo image are error range. */
+                       if (j > h + y - error_range)
+                               *(fb + (j * PANEL_WIDTH) + i) =
+                                       conv_rgb565_to_rgb888(pixel, 1);
+                       else
+                               *(fb + (j * PANEL_WIDTH) + i) =
+                                       conv_rgb565_to_rgb888(pixel, 0);
+               }
        }
 }