It's used for delaying vsync in interlaced mode.

Signed-off-by: Eric Anholt <e...@anholt.net>
---
 drivers/gpu/drm/vc4/vc4_crtc.c | 2 +-
 drivers/gpu/drm/vc4/vc4_regs.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index bb74cb9..5daa824 100644
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -88,7 +88,7 @@ static const struct {
 } crtc_regs[] = {
        CRTC_REG(PV_CONTROL),
        CRTC_REG(PV_V_CONTROL),
-       CRTC_REG(PV_VSYNCD),
+       CRTC_REG(PV_VSYNCD_EVEN),
        CRTC_REG(PV_HORZA),
        CRTC_REG(PV_HORZB),
        CRTC_REG(PV_VERTA),
diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h
index 31042a4..58d4cb3 100644
--- a/drivers/gpu/drm/vc4/vc4_regs.h
+++ b/drivers/gpu/drm/vc4/vc4_regs.h
@@ -187,7 +187,7 @@
 # define PV_VCONTROL_CONTINUOUS                        BIT(1)
 # define PV_VCONTROL_VIDEN                     BIT(0)
 
-#define PV_VSYNCD                              0x08
+#define PV_VSYNCD_EVEN                         0x08
 
 #define PV_HORZA                               0x0c
 # define PV_HORZA_HBP_MASK                     VC4_MASK(31, 16)
-- 
2.7.0

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