[Intel-gfx] [PATCH] drm/i915: Fix skl srckey mask bits

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

We're incorrectly masking off the R/V channel enable bit from
KEYMSK. Fix it up.

Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Matt Roper <matthew.d.roper at intel.com>
Fixes: b20815255693 ("drm/i915: Add plane alpha blending support, v2.")
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_sprite.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index b02d3d9809e3..cd42e81f8a90 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -493,7 +493,7 @@ skl_program_plane(struct intel_plane *plane,
 
 	keymax = (key->max_value & 0xffffff) | PLANE_KEYMAX_ALPHA(alpha);
 
-	keymsk = key->channel_mask & 0x3ffffff;
+	keymsk = key->channel_mask & 0x7ffffff;
 	if (alpha < 0xff)
 		keymsk |= PLANE_KEYMSK_ALPHA_ENABLE;
 
-- 
2.19.2