From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Mon, 14 Nov 2016 16:53:58 +0000 (+0200)
Subject: drm/i915: Use & instead if == to check for rotations
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=f22aa14352cc6f40fdb81cdb2e4f4f9d75613a37;p=openwrt%2Fstaging%2Fblogic.git

drm/i915: Use & instead if == to check for rotations

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@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479142440-25283-2-git-send-email-ville.syrjala@linux.intel.com
---

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index a4f4b45b586b..10dd1ef57c30 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3084,7 +3084,7 @@ 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);
@@ -3188,7 +3188,7 @@ 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_priv) && !IS_BROADWELL(dev_priv)) {
@@ -10881,7 +10881,7 @@ static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base,
 		if (HAS_DDI(dev_priv))
 			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;
 	}
 
@@ -10927,7 +10927,7 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
 
 		/* ILK+ do this automagically */
 		if (HAS_GMCH_DISPLAY(dev_priv) &&
-		    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 5e4eb7cafef0..ea85d27af217 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -436,7 +436,7 @@ 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;
@@ -566,7 +566,7 @@ 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 */
@@ -700,7 +700,7 @@ 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;