Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next

more fixes for nouveau.

* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/nouveau: resume display if any later suspend bits fail
  drm/nouveau: fix lock unbalance in nouveau_crtc_page_flip
  drm/nouveau: implement hooks for needed for drm vblank timestamping support
  drm/nouveau/disp: add a method to fetch info needed by drm vblank timestamping
  drm/nv50: fill in crtc mode struct members from crtc_mode_fixup

14 files changed, 244 insertions, 12 deletions

diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv04.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv04.c
index a0bc8a89b699..7cf8b1348632 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nv04.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv04.c
@@ -31,9 +31,45 @@ struct nv04_disp_priv {
 	struct nouveau_disp base;
 };
 
+static int
+nv04_disp_scanoutpos(struct nouveau_object *object, u32 mthd,
+		     void *data, u32 size)
+{
+	struct nv04_disp_priv *priv = (void *)object->engine;
+	struct nv04_display_scanoutpos *args = data;
+	const int head = (mthd & NV04_DISP_MTHD_HEAD);
+	u32 line;
+
+	if (size < sizeof(*args))
+		return -EINVAL;
+
+	args->vblanks = nv_rd32(priv, 0x680800 + (head * 0x2000)) & 0xffff;
+	args->vtotal  = nv_rd32(priv, 0x680804 + (head * 0x2000)) & 0xffff;
+	args->vblanke = args->vtotal - 1;
+
+	args->hblanks = nv_rd32(priv, 0x680820 + (head * 0x2000)) & 0xffff;
+	args->htotal  = nv_rd32(priv, 0x680824 + (head * 0x2000)) & 0xffff;
+	args->hblanke = args->htotal - 1;
+
+	args->time[0] = ktime_to_ns(ktime_get());
+	line = nv_rd32(priv, 0x600868 + (head * 0x2000));
+	args->time[1] = ktime_to_ns(ktime_get());
+	args->hline = (line & 0xffff0000) >> 16;
+	args->vline = (line & 0x0000ffff);
+	return 0;
+}
+
+#define HEAD_MTHD(n) (n), (n) + 0x01
+
+static struct nouveau_omthds
+nv04_disp_omthds[] = {
+	{ HEAD_MTHD(NV04_DISP_SCANOUTPOS), nv04_disp_scanoutpos },
+	{}
+};
+
 static struct nouveau_oclass
 nv04_disp_sclass[] = {
-	{ NV04_DISP_CLASS, &nouveau_object_ofuncs },
+	{ NV04_DISP_CLASS, &nouveau_object_ofuncs, nv04_disp_omthds },
 	{},
 };
 
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
index c168ae3eaa97..940eaa5d8b9a 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
@@ -541,6 +541,35 @@ nv50_disp_curs_ofuncs = {
  * Base display object
  ******************************************************************************/
 
+int
+nv50_disp_base_scanoutpos(struct nouveau_object *object, u32 mthd,
+			  void *data, u32 size)
+{
+	struct nv50_disp_priv *priv = (void *)object->engine;
+	struct nv04_display_scanoutpos *args = data;
+	const int head = (mthd & NV50_DISP_MTHD_HEAD);
+	u32 blanke, blanks, total;
+
+	if (size < sizeof(*args) || head >= priv->head.nr)
+		return -EINVAL;
+	blanke = nv_rd32(priv, 0x610aec + (head * 0x540));
+	blanks = nv_rd32(priv, 0x610af4 + (head * 0x540));
+	total  = nv_rd32(priv, 0x610afc + (head * 0x540));
+
+	args->vblanke = (blanke & 0xffff0000) >> 16;
+	args->hblanke = (blanke & 0x0000ffff);
+	args->vblanks = (blanks & 0xffff0000) >> 16;
+	args->hblanks = (blanks & 0x0000ffff);
+	args->vtotal  = ( total & 0xffff0000) >> 16;
+	args->htotal  = ( total & 0x0000ffff);
+
+	args->time[0] = ktime_to_ns(ktime_get());
+	args->vline   = nv_rd32(priv, 0x616340 + (head * 0x800)) & 0xffff;
+	args->time[1] = ktime_to_ns(ktime_get()); /* vline read locks hline */
+	args->hline   = nv_rd32(priv, 0x616344 + (head * 0x800)) & 0xffff;
+	return 0;
+}
+
 static void
 nv50_disp_base_vblank_enable(struct nouveau_event *event, int head)
 {
@@ -675,6 +704,7 @@ nv50_disp_base_ofuncs = {
 
 static struct nouveau_omthds
 nv50_disp_base_omthds[] = {
+	{ HEAD_MTHD(NV50_DISP_SCANOUTPOS)     , nv50_disp_base_scanoutpos },
 	{ SOR_MTHD(NV50_DISP_SOR_PWR)         , nv50_sor_mthd },
 	{ SOR_MTHD(NV50_DISP_SOR_LVDS_SCRIPT) , nv50_sor_mthd },
 	{ DAC_MTHD(NV50_DISP_DAC_PWR)         , nv50_dac_mthd },
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.h b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.h
index 1ae6ceb56704..d31d426ea1f6 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.h
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.h
@@ -43,6 +43,10 @@ struct nv50_disp_priv {
 	} pior;
 };
 
+#define HEAD_MTHD(n) (n), (n) + 0x03
+
+int nv50_disp_base_scanoutpos(struct nouveau_object *, u32, void *, u32);
+
 #define DAC_MTHD(n) (n), (n) + 0x03
 
 int nv50_dac_mthd(struct nouveau_object *, u32, void *, u32);
@@ -132,13 +136,12 @@ void nv50_disp_intr(struct nouveau_subdev *);
 
 extern struct nouveau_omthds nv84_disp_base_omthds[];
 
-extern struct nouveau_omthds nva3_disp_base_omthds[];
-
 extern struct nouveau_ofuncs nvd0_disp_mast_ofuncs;
 extern struct nouveau_ofuncs nvd0_disp_sync_ofuncs;
 extern struct nouveau_ofuncs nvd0_disp_ovly_ofuncs;
 extern struct nouveau_ofuncs nvd0_disp_oimm_ofuncs;
 extern struct nouveau_ofuncs nvd0_disp_curs_ofuncs;
+extern struct nouveau_omthds nvd0_disp_base_omthds[];
 extern struct nouveau_ofuncs nvd0_disp_base_ofuncs;
 extern struct nouveau_oclass nvd0_disp_cclass;
 void nvd0_disp_intr_supervisor(struct work_struct *);
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv84.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv84.c
index d8c74c0883a1..ef9ce300a496 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nv84.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv84.c
@@ -41,6 +41,7 @@ nv84_disp_sclass[] = {
 
 struct nouveau_omthds
 nv84_disp_base_omthds[] = {
+	{ HEAD_MTHD(NV50_DISP_SCANOUTPOS)     , nv50_disp_base_scanoutpos },
 	{ SOR_MTHD(NV50_DISP_SOR_PWR)         , nv50_sor_mthd },
 	{ SOR_MTHD(NV84_DISP_SOR_HDMI_PWR)    , nv50_sor_mthd },
 	{ SOR_MTHD(NV50_DISP_SOR_LVDS_SCRIPT) , nv50_sor_mthd },
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv94.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv94.c
index a66f949c1f84..a518543c00ab 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nv94.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv94.c
@@ -41,6 +41,7 @@ nv94_disp_sclass[] = {
 
 static struct nouveau_omthds
 nv94_disp_base_omthds[] = {
+	{ HEAD_MTHD(NV50_DISP_SCANOUTPOS)     , nv50_disp_base_scanoutpos },
 	{ SOR_MTHD(NV50_DISP_SOR_PWR)         , nv50_sor_mthd },
 	{ SOR_MTHD(NV84_DISP_SOR_HDMI_PWR)    , nv50_sor_mthd },
 	{ SOR_MTHD(NV50_DISP_SOR_LVDS_SCRIPT) , nv50_sor_mthd },
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nva3.c b/drivers/gpu/drm/nouveau/core/engine/disp/nva3.c
index b75413169eae..6ad6dcece43b 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nva3.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nva3.c
@@ -39,8 +39,9 @@ nva3_disp_sclass[] = {
 	{}
 };
 
-struct nouveau_omthds
+static struct nouveau_omthds
 nva3_disp_base_omthds[] = {
+	{ HEAD_MTHD(NV50_DISP_SCANOUTPOS)     , nv50_disp_base_scanoutpos },
 	{ SOR_MTHD(NV50_DISP_SOR_PWR)         , nv50_sor_mthd },
 	{ SOR_MTHD(NVA3_DISP_SOR_HDA_ELD)     , nv50_sor_mthd },
 	{ SOR_MTHD(NV84_DISP_SOR_HDMI_PWR)    , nv50_sor_mthd },
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c b/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c
index d52c0f50a1a9..1c5e4e8b2c82 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c
@@ -440,6 +440,36 @@ nvd0_disp_curs_ofuncs = {
  * Base display object
  ******************************************************************************/
 
+static int
+nvd0_disp_base_scanoutpos(struct nouveau_object *object, u32 mthd,
+			  void *data, u32 size)
+{
+	struct nv50_disp_priv *priv = (void *)object->engine;
+	struct nv04_display_scanoutpos *args = data;
+	const int head = (mthd & NV50_DISP_MTHD_HEAD);
+	u32 blanke, blanks, total;
+
+	if (size < sizeof(*args) || head >= priv->head.nr)
+		return -EINVAL;
+
+	total  = nv_rd32(priv, 0x640414 + (head * 0x300));
+	blanke = nv_rd32(priv, 0x64041c + (head * 0x300));
+	blanks = nv_rd32(priv, 0x640420 + (head * 0x300));
+
+	args->vblanke = (blanke & 0xffff0000) >> 16;
+	args->hblanke = (blanke & 0x0000ffff);
+	args->vblanks = (blanks & 0xffff0000) >> 16;
+	args->hblanks = (blanks & 0x0000ffff);
+	args->vtotal  = ( total & 0xffff0000) >> 16;
+	args->htotal  = ( total & 0x0000ffff);
+
+	args->time[0] = ktime_to_ns(ktime_get());
+	args->vline   = nv_rd32(priv, 0x616340 + (head * 0x800)) & 0xffff;
+	args->time[1] = ktime_to_ns(ktime_get()); /* vline read locks hline */
+	args->hline   = nv_rd32(priv, 0x616344 + (head * 0x800)) & 0xffff;
+	return 0;
+}
+
 static void
 nvd0_disp_base_vblank_enable(struct nouveau_event *event, int head)
 {
@@ -573,9 +603,24 @@ nvd0_disp_base_ofuncs = {
 	.fini = nvd0_disp_base_fini,
 };
 
+struct nouveau_omthds
+nvd0_disp_base_omthds[] = {
+	{ HEAD_MTHD(NV50_DISP_SCANOUTPOS)     , nvd0_disp_base_scanoutpos },
+	{ SOR_MTHD(NV50_DISP_SOR_PWR)         , nv50_sor_mthd },
+	{ SOR_MTHD(NVA3_DISP_SOR_HDA_ELD)     , nv50_sor_mthd },
+	{ SOR_MTHD(NV84_DISP_SOR_HDMI_PWR)    , nv50_sor_mthd },
+	{ SOR_MTHD(NV50_DISP_SOR_LVDS_SCRIPT) , nv50_sor_mthd },
+	{ DAC_MTHD(NV50_DISP_DAC_PWR)         , nv50_dac_mthd },
+	{ DAC_MTHD(NV50_DISP_DAC_LOAD)        , nv50_dac_mthd },
+	{ PIOR_MTHD(NV50_DISP_PIOR_PWR)       , nv50_pior_mthd },
+	{ PIOR_MTHD(NV50_DISP_PIOR_TMDS_PWR)  , nv50_pior_mthd },
+	{ PIOR_MTHD(NV50_DISP_PIOR_DP_PWR)    , nv50_pior_mthd },
+	{},
+};
+
 static struct nouveau_oclass
 nvd0_disp_base_oclass[] = {
-	{ NVD0_DISP_CLASS, &nvd0_disp_base_ofuncs, nva3_disp_base_omthds },
+	{ NVD0_DISP_CLASS, &nvd0_disp_base_ofuncs, nvd0_disp_base_omthds },
 	{}
 };
 
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nve0.c b/drivers/gpu/drm/nouveau/core/engine/disp/nve0.c
index 20725b363d58..ab63f32c00b2 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nve0.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nve0.c
@@ -41,7 +41,7 @@ nve0_disp_sclass[] = {
 
 static struct nouveau_oclass
 nve0_disp_base_oclass[] = {
-	{ NVE0_DISP_CLASS, &nvd0_disp_base_ofuncs, nva3_disp_base_omthds },
+	{ NVE0_DISP_CLASS, &nvd0_disp_base_ofuncs, nvd0_disp_base_omthds },
 	{}
 };
 
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nvf0.c b/drivers/gpu/drm/nouveau/core/engine/disp/nvf0.c
index a488c36e40f9..05fee10e0c97 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nvf0.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nvf0.c
@@ -41,7 +41,7 @@ nvf0_disp_sclass[] = {
 
 static struct nouveau_oclass
 nvf0_disp_base_oclass[] = {
-	{ NVF0_DISP_CLASS, &nvd0_disp_base_ofuncs, nva3_disp_base_omthds },
+	{ NVF0_DISP_CLASS, &nvd0_disp_base_ofuncs, nvd0_disp_base_omthds },
 	{}
 };
 
diff --git a/drivers/gpu/drm/nouveau/core/include/core/class.h b/drivers/gpu/drm/nouveau/core/include/core/class.h
index 560c3593dae7..e71a4325e670 100644
--- a/drivers/gpu/drm/nouveau/core/include/core/class.h
+++ b/drivers/gpu/drm/nouveau/core/include/core/class.h
@@ -230,9 +230,26 @@ struct nve0_channel_ind_class {
 
 #define NV04_DISP_CLASS                                              0x00000046
 
+#define NV04_DISP_MTHD                                               0x00000000
+#define NV04_DISP_MTHD_HEAD                                          0x00000001
+
+#define NV04_DISP_SCANOUTPOS                                         0x00000000
+
 struct nv04_display_class {
 };
 
+struct nv04_display_scanoutpos {
+	s64 time[2];
+	u32 vblanks;
+	u32 vblanke;
+	u32 vtotal;
+	u32 vline;
+	u32 hblanks;
+	u32 hblanke;
+	u32 htotal;
+	u32 hline;
+};
+
 /* 5070: NV50_DISP
  * 8270: NV84_DISP
  * 8370: NVA0_DISP
@@ -252,6 +269,11 @@ struct nv04_display_class {
 #define NVE0_DISP_CLASS                                              0x00009170
 #define NVF0_DISP_CLASS                                              0x00009270
 
+#define NV50_DISP_MTHD                                               0x00000000
+#define NV50_DISP_MTHD_HEAD                                          0x00000003
+
+#define NV50_DISP_SCANOUTPOS                                         0x00000000
+
 #define NV50_DISP_SOR_MTHD                                           0x00010000
 #define NV50_DISP_SOR_MTHD_TYPE                                      0x0000f000
 #define NV50_DISP_SOR_MTHD_HEAD                                      0x00000018
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index b4262ad66b18..24011596af43 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -68,6 +68,86 @@ nouveau_display_vblank_disable(struct drm_device *dev, int head)
 		nouveau_event_put(disp->vblank[head]);
 }
 
+static inline int
+calc(int blanks, int blanke, int total, int line)
+{
+	if (blanke >= blanks) {
+		if (line >= blanks)
+			line -= total;
+	} else {
+		if (line >= blanks)
+			line -= total;
+		line -= blanke + 1;
+	}
+	return line;
+}
+
+int
+nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
+				ktime_t *stime, ktime_t *etime)
+{
+	const u32 mthd = NV04_DISP_SCANOUTPOS + nouveau_crtc(crtc)->index;
+	struct nouveau_display *disp = nouveau_display(crtc->dev);
+	struct nv04_display_scanoutpos args;
+	int ret, retry = 1;
+
+	do {
+		ret = nv_exec(disp->core, mthd, &args, sizeof(args));
+		if (ret != 0)
+			return 0;
+
+		if (args.vline) {
+			ret |= DRM_SCANOUTPOS_ACCURATE;
+			ret |= DRM_SCANOUTPOS_VALID;
+			break;
+		}
+
+		if (retry) ndelay(crtc->linedur_ns);
+	} while (retry--);
+
+	*hpos = calc(args.hblanks, args.hblanke, args.htotal, args.hline);
+	*vpos = calc(args.vblanks, args.vblanke, args.vtotal, args.vline);
+	if (stime) *stime = ns_to_ktime(args.time[0]);
+	if (etime) *etime = ns_to_ktime(args.time[1]);
+
+	if (*vpos < 0)
+		ret |= DRM_SCANOUTPOS_INVBL;
+	return ret;
+}
+
+int
+nouveau_display_scanoutpos(struct drm_device *dev, int head, unsigned int flags,
+			   int *vpos, int *hpos, ktime_t *stime, ktime_t *etime)
+{
+	struct drm_crtc *crtc;
+
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+		if (nouveau_crtc(crtc)->index == head) {
+			return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
+							       stime, etime);
+		}
+	}
+
+	return 0;
+}
+
+int
+nouveau_display_vblstamp(struct drm_device *dev, int head, int *max_error,
+			 struct timeval *time, unsigned flags)
+{
+	struct drm_crtc *crtc;
+
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+		if (nouveau_crtc(crtc)->index == head) {
+			return drm_calc_vbltimestamp_from_scanoutpos(dev,
+					head, max_error, time, flags, crtc,
+					&crtc->hwmode);
+		}
+	}
+
+	return -EINVAL;
+}
+
 static void
 nouveau_display_vblank_fini(struct drm_device *dev)
 {
@@ -642,7 +722,7 @@ nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 	ret = nouveau_fence_sync(fence, chan);
 	nouveau_fence_unref(&fence);
 	if (ret)
-		goto fail_free;
+		goto fail_unpin;
 
 	ret = ttm_bo_reserve(&old_bo->bo, true, false, false, NULL);
 	if (ret)
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.h b/drivers/gpu/drm/nouveau/nouveau_display.h
index 73aa231130b8..a71cf77e55b2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.h
+++ b/drivers/gpu/drm/nouveau/nouveau_display.h
@@ -64,6 +64,10 @@ void nouveau_display_repin(struct drm_device *dev);
 void nouveau_display_resume(struct drm_device *dev);
 int  nouveau_display_vblank_enable(struct drm_device *, int);
 void nouveau_display_vblank_disable(struct drm_device *, int);
+int  nouveau_display_scanoutpos(struct drm_device *, int, unsigned int,
+				int *, int *, ktime_t *, ktime_t *);
+int  nouveau_display_vblstamp(struct drm_device *, int, int *,
+			      struct timeval *, unsigned);
 
 int  nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 			    struct drm_pending_vblank_event *event,
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 98a22e6e27a1..78c8e7146d56 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -503,19 +503,21 @@ nouveau_do_suspend(struct drm_device *dev)
 	if (drm->cechan) {
 		ret = nouveau_channel_idle(drm->cechan);
 		if (ret)
-			return ret;
+			goto fail_display;
 	}
 
 	if (drm->channel) {
 		ret = nouveau_channel_idle(drm->channel);
 		if (ret)
-			return ret;
+			goto fail_display;
 	}
 
 	NV_INFO(drm, "suspending client object trees...\n");
 	if (drm->fence && nouveau_fence(drm)->suspend) {
-		if (!nouveau_fence(drm)->suspend(drm))
-			return -ENOMEM;
+		if (!nouveau_fence(drm)->suspend(drm)) {
+			ret = -ENOMEM;
+			goto fail_display;
+		}
 	}
 
 	list_for_each_entry(cli, &drm->clients, head) {
@@ -537,6 +539,10 @@ fail_client:
 		nouveau_client_init(&cli->base);
 	}
 
+	if (drm->fence && nouveau_fence(drm)->resume)
+		nouveau_fence(drm)->resume(drm);
+
+fail_display:
 	if (dev->mode_config.num_crtc) {
 		NV_INFO(drm, "resuming display...\n");
 		nouveau_display_resume(dev);
@@ -798,6 +804,8 @@ driver = {
 	.get_vblank_counter = drm_vblank_count,
 	.enable_vblank = nouveau_display_vblank_enable,
 	.disable_vblank = nouveau_display_vblank_disable,
+	.get_scanout_position = nouveau_display_scanoutpos,
+	.get_vblank_timestamp = nouveau_display_vblstamp,
 
 	.ioctls = nouveau_ioctls,
 	.num_ioctls = ARRAY_SIZE(nouveau_ioctls),
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index 6ae7a697866e..2dccafc6e9db 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -1035,6 +1035,7 @@ static bool
 nv50_crtc_mode_fixup(struct drm_crtc *crtc, const struct drm_display_mode *mode,
 		     struct drm_display_mode *adjusted_mode)
 {
+	drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
 	return true;
 }