[PATCH v2 13/15] drm/i915: Use & instead if == to check for rotations

[ville.syrjala at linux.intel.com]

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

Using == to check for 180 degree rotation only works as long as the
reflection bits aren't set. That will change soon enough for CHV, so
let's stop doing things the wrong way.

v2: Drop the BIT()

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 8 ++++----
 drivers/gpu/drm/i915/intel_sprite.c  | 6 +++---
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index bd1642d0f5a8..b19516dd967c 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3080,7 +3080,7 @@ static void i9xx_update_primary_plane(struct drm_plane *primary,
 		intel_crtc->dspaddr_offset =
 			intel_compute_tile_offset(&x, &y, plane_state, 0);
 
-	if (rotation == DRM_ROTATE_180) {
+	if (rotation & DRM_ROTATE_180) {
 		dspcntr |= DISPPLANE_ROTATE_180;
 
 		x += (crtc_state->pipe_src_w - 1);
@@ -3181,7 +3181,7 @@ static void ironlake_update_primary_plane(struct drm_plane *primary,
 	intel_crtc->dspaddr_offset =
 		intel_compute_tile_offset(&x, &y, plane_state, 0);
 
-	if (rotation == DRM_ROTATE_180) {
+	if (rotation & DRM_ROTATE_180) {
 		dspcntr |= DISPPLANE_ROTATE_180;
 
 		if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
@@ -10832,7 +10832,7 @@ static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base,
 		if (HAS_DDI(dev))
 			cntl |= CURSOR_PIPE_CSC_ENABLE;
 
-		if (plane_state->base.rotation == DRM_ROTATE_180)
+		if (plane_state->base.rotation & DRM_ROTATE_180)
 			cntl |= CURSOR_ROTATE_180;
 	}
 
@@ -10878,7 +10878,7 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
 
 		/* ILK+ do this automagically */
 		if (HAS_GMCH_DISPLAY(dev) &&
-		    plane_state->base.rotation == DRM_ROTATE_180) {
+		    plane_state->base.rotation & DRM_ROTATE_180) {
 			base += (plane_state->base.crtc_h *
 				 plane_state->base.crtc_w - 1) * 4;
 		}
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 947610dc7b23..4c0fe317d76e 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -432,7 +432,7 @@ vlv_update_plane(struct drm_plane *dplane,
 	intel_add_fb_offsets(&x, &y, plane_state, 0);
 	sprsurf_offset = intel_compute_tile_offset(&x, &y, plane_state, 0);
 
-	if (rotation == DRM_ROTATE_180) {
+	if (rotation & DRM_ROTATE_180) {
 		sprctl |= SP_ROTATE_180;
 
 		x += src_w;
@@ -562,7 +562,7 @@ ivb_update_plane(struct drm_plane *plane,
 	intel_add_fb_offsets(&x, &y, plane_state, 0);
 	sprsurf_offset = intel_compute_tile_offset(&x, &y, plane_state, 0);
 
-	if (rotation == DRM_ROTATE_180) {
+	if (rotation & DRM_ROTATE_180) {
 		sprctl |= SPRITE_ROTATE_180;
 
 		/* HSW and BDW does this automagically in hardware */
@@ -696,7 +696,7 @@ ilk_update_plane(struct drm_plane *plane,
 	intel_add_fb_offsets(&x, &y, plane_state, 0);
 	dvssurf_offset = intel_compute_tile_offset(&x, &y, plane_state, 0);
 
-	if (rotation == DRM_ROTATE_180) {
+	if (rotation & DRM_ROTATE_180) {
 		dvscntr |= DVS_ROTATE_180;
 
 		x += src_w;
-- 
2.7.4