drm/cirrus: correct register values for 16bpp

When the mode is set with 16bpp on QEMU, the output gets totally broken.
The culprit is the bogus register values set for 16bpp, which was likely
copied from from a wrong place.

Addresses https://bugzilla.novell.com/show_bug.cgi?id=799216

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: David Airlie <airlied@linux.ie>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/drivers/gpu/drm/cirrus/cirrus_mode.c b/drivers/gpu/drm/cirrus/cirrus_mode.c
index 60685b21cc367febe98a92929fc841572858fbeb..379a47ea99f6cc7e4df9e16c3452f0cd9e94ab72 100644 (file)
--- a/drivers/gpu/drm/cirrus/cirrus_mode.c
+++ b/drivers/gpu/drm/cirrus/cirrus_mode.c
@@ -273,8 +273,8 @@ static int cirrus_crtc_mode_set(struct drm_crtc *crtc,
                sr07 |= 0x11;
                break;
        case 16:
-               sr07 |= 0xc1;
-               hdr = 0xc0;
+               sr07 |= 0x17;
+               hdr = 0xc1;
                break;
        case 24:
                sr07 |= 0x15;