[Intel-gfx] [PATCH 14/15] drm/i915: Relax 845/865 CURBASE alignemnt requirement to 32 bytes

[ville.syrjala at linux.intel.com]

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

Supposedly 845/865 require only 32 byte alignment for CURBASE. Let's
relax the checks to allow that instead of demanding 4KiB alignment.
This will allow cursor panning in 8 pixel units.

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

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 420d306e31c9..d78ab0d35274 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2090,6 +2090,8 @@ static unsigned int intel_cursor_alignment(const struct drm_i915_private *dev_pr
 		return 16 * 1024;
 	else if (IS_I85X(dev_priv))
 		return 256;
+	else if (IS_I845G(dev_priv) || IS_I865G(dev_priv))
+		return 32;
 	else
 		return 4 * 1024;
 }
-- 
2.10.2