s3fb: implement fb_get_caps

Implement fb_get_caps().  This will allow the driver to tell upper layer that
it can only support 256 8x16 bitmaps when in tileblitting mode
(var->bits_per_pixel == 0);

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/video/s3fb.c b/drivers/video/s3fb.c
index dfa717b5b63a..4d0e204dd8ad 100644
--- a/drivers/video/s3fb.c
+++ b/drivers/video/s3fb.c
@@ -799,6 +799,23 @@ static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
         return 0;
 }
 
+/* Get capabilities of accelerator based on the mode */
+
+static void s3fb_get_caps(struct fb_info *info, struct fb_blit_caps *caps,
+                          struct fb_var_screeninfo *var)
+{
+        if (var->bits_per_pixel == 0) {
+                /* can only support 256 8x16 bitmap */
+                caps->x = 1 << (8 - 1);
+                caps->y = 1 << (16 - 1);
+                caps->len = 256;
+        } else {
+                caps->x = ~(u32)0;
+                caps->y = ~(u32)0;
+                caps->len = ~(u32)0;
+        }
+}
+
 /* ------------------------------------------------------------------------- */
 
 /* Frame buffer operations */
@@ -815,6 +832,7 @@ static struct fb_ops s3fb_ops = {
         .fb_fillrect    = s3fb_fillrect,
         .fb_copyarea    = cfb_copyarea,
         .fb_imageblit   = s3fb_imageblit,
+        .fb_get_caps    = s3fb_get_caps,
 };
 
 /* ------------------------------------------------------------------------- */