[Intel-gfx] [PATCH 2/7] drm/i915: Set the primary plane pipe select bits on gen4

[Ville Syrjala]

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

i965 and g4x still have the pipe select bits in the plane control
registers, they're just hardcoded to select a specific pipe. However
plane C on i965 can still move between the pipes, thus we should
program the pipe select bits on i965 if we want to expose plane C
some day.

Since there is no harm in programming the bits on any plane on
i965/g4x let's just always set them. This will also make our
pre-computed register value match what the hardware register
would read, should we want to cross check the two.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index cccc1126f1d5..6ffc1d088d7a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3163,7 +3163,7 @@ static u32 i9xx_plane_ctl(const struct intel_crtc_state *crtc_state,
 	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
 		dspcntr |= DISPPLANE_PIPE_CSC_ENABLE;
 
-	if (INTEL_GEN(dev_priv) < 4)
+	if (INTEL_GEN(dev_priv) < 5)
 		dspcntr |= DISPPLANE_SEL_PIPE(crtc->pipe);
 
 	switch (fb->format->format) {
-- 
2.13.6