drm/vblank: update recently added vbl interface to be more future proof.

This makes the interface a bit cleaner by leaving a single gap in the
vblank bit space instead of creating two gaps.

Suggestions from Michel on mailing list/irc.

Reviewed-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index 3617b4c..904d7e9 100644 (file)
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -280,7 +280,7 @@ int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
                if (dev->driver->dumb_create)
                        req->value = 1;
                break;
-       case DRM_CAP_HIGH_CRTC:
+       case DRM_CAP_VBLANK_HIGH_CRTC:
                req->value = 1;
                break;
        default:

diff --git a/include/drm/drm.h b/include/drm/drm.h
index 99cd074..4be33b4 100644 (file)
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -463,14 +463,15 @@ struct drm_irq_busid {
 enum drm_vblank_seq_type {
        _DRM_VBLANK_ABSOLUTE = 0x0,     /**< Wait for specific vblank sequence number */
        _DRM_VBLANK_RELATIVE = 0x1,     /**< Wait for given number of vblanks */
+       /* bits 1-6 are reserved for high crtcs */
+       _DRM_VBLANK_HIGH_CRTC_MASK = 0x0000003e,
        _DRM_VBLANK_EVENT = 0x4000000,   /**< Send event instead of blocking */
        _DRM_VBLANK_FLIP = 0x8000000,   /**< Scheduled buffer swap should flip */
        _DRM_VBLANK_NEXTONMISS = 0x10000000,    /**< If missed, wait for next vblank */
        _DRM_VBLANK_SECONDARY = 0x20000000,     /**< Secondary display controller */
        _DRM_VBLANK_SIGNAL = 0x40000000 /**< Send signal instead of blocking, unsupported */
 };
-#define _DRM_VBLANK_HIGH_CRTC_SHIFT 16
-#define _DRM_VBLANK_HIGH_CRTC_MASK 0x001F0000
+#define _DRM_VBLANK_HIGH_CRTC_SHIFT 1
 
 #define _DRM_VBLANK_TYPES_MASK (_DRM_VBLANK_ABSOLUTE | _DRM_VBLANK_RELATIVE)
 #define _DRM_VBLANK_FLAGS_MASK (_DRM_VBLANK_EVENT | _DRM_VBLANK_SIGNAL | \
@@ -755,7 +756,7 @@ struct drm_event_vblank {
 };
 
 #define DRM_CAP_DUMB_BUFFER 0x1
-#define DRM_CAP_HIGH_CRTC 0x2
+#define DRM_CAP_VBLANK_HIGH_CRTC 0x2
 
 /* typedef area */
 #ifndef __KERNEL__