video/framebuffer: fix bug: jpegview cannot work on framebuffer device other than 16BPP

Force fb_var_screeninfo color format on all Blackfin Framebuffer Drivers.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NBryan Wu <cooloney@kernel.org>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/video/bf54x-lq043fb.c

@@ -335,7 +335,20 @@ static int bfin_bf54x_fb_check_var(struct fb_var_screeninfo *var,
 				   struct fb_info *info)
 {
 
-	if (var->bits_per_pixel != LCD_BPP) {
+	switch (var->bits_per_pixel) {
+	case 24:/* TRUECOLOUR, 16m */
+		var->red.offset = 16;
+		var->green.offset = 8;
+		var->blue.offset = 0;
+		var->red.length = var->green.length = var->blue.length = 8;
+		var->transp.offset = 0;
+		var->transp.length = 0;
+		var->transp.msb_right = 0;
+		var->red.msb_right = 0;
+		var->green.msb_right = 0;
+		var->blue.msb_right = 0;
+		break;
+	default:
 		pr_debug("%s: depth not supported: %u BPP\n", __func__,
 			 var->bits_per_pixel);
 		return -EINVAL;

drivers/video/bfin-t350mcqb-fb.c

@@ -254,7 +254,20 @@ static int bfin_t350mcqb_fb_check_var(struct fb_var_screeninfo *var,
 				   struct fb_info *info)
 {
 
-	if (var->bits_per_pixel != LCD_BPP) {
+	switch (var->bits_per_pixel) {
+	case 24:/* TRUECOLOUR, 16m */
+		var->red.offset = 0;
+		var->green.offset = 8;
+		var->blue.offset = 16;
+		var->red.length = var->green.length = var->blue.length = 8;
+		var->transp.offset = 0;
+		var->transp.length = 0;
+		var->transp.msb_right = 0;
+		var->red.msb_right = 0;
+		var->green.msb_right = 0;
+		var->blue.msb_right = 0;
+		break;
+	default:
 		pr_debug("%s: depth not supported: %u BPP\n", __func__,
 			 var->bits_per_pixel);
 		return -EINVAL;