drm: Add drm_rotation_90_or_270()

We have intel_rotation_90_or_270() in i915 to check if the rotation is
90 or 270 degrees. Similar checks are elsewhere in drm, so let's move
the helper into a central place and use it everwhere.

v2: Drop the BIT()
    Convert all new intel_rotation_90_or_270() calls
    Deal with superfluous code shuffling

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v1)
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1474907460-10717-2-git-send-email-ville.syrjala@linux.intel.com

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c

@@ -393,7 +393,7 @@ static void atmel_hlcdc_plane_update_format(struct atmel_hlcdc_plane *plane,
 
 	if ((state->base.fb->pixel_format == DRM_FORMAT_YUV422 ||
 	     state->base.fb->pixel_format == DRM_FORMAT_NV61) &&
-	    (state->base.rotation & (DRM_ROTATE_90 | DRM_ROTATE_270)))
+	    drm_rotation_90_or_270(state->base.rotation))
 		cfg |= ATMEL_HLCDC_YUV422ROT;
 
 	atmel_hlcdc_layer_update_cfg(&plane->layer,
@@ -628,7 +628,7 @@ static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p,
 	/*
 	 * Swap width and size in case of 90 or 270 degrees rotation
 	 */
-	if (state->base.rotation & (DRM_ROTATE_90 | DRM_ROTATE_270)) {
+	if (drm_rotation_90_or_270(state->base.rotation)) {
 		tmp = state->crtc_w;
 		state->crtc_w = state->crtc_h;
 		state->crtc_h = tmp;

drivers/gpu/drm/drm_atomic_helper.c

@@ -2399,7 +2399,7 @@ int __drm_atomic_helper_set_config(struct drm_mode_set *set,
 	primary_state->crtc_h = vdisplay;
 	primary_state->src_x = set->x << 16;
 	primary_state->src_y = set->y << 16;
-	if (primary_state->rotation & (DRM_ROTATE_90 | DRM_ROTATE_270)) {
+	if (drm_rotation_90_or_270(primary_state->rotation)) {
 		primary_state->src_w = vdisplay << 16;
 		primary_state->src_h = hdisplay << 16;
 	} else {

drivers/gpu/drm/drm_crtc.c

@@ -727,8 +727,7 @@ int drm_crtc_check_viewport(const struct drm_crtc *crtc,
 	drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
 
 	if (crtc->state &&
-	    crtc->primary->state->rotation & (DRM_ROTATE_90 |
-					      DRM_ROTATE_270))
+	    drm_rotation_90_or_270(crtc->primary->state->rotation))
 		swap(hdisplay, vdisplay);
 
 	return drm_framebuffer_check_src_coords(x << 16, y << 16,

drivers/gpu/drm/i915/intel_atomic_plane.c

@@ -142,8 +142,9 @@ static int intel_plane_atomic_check(struct drm_plane *plane,
 	intel_state->clip.y2 =
 		crtc_state->base.enable ? crtc_state->pipe_src_h : 0;
 
-	if (state->fb && intel_rotation_90_or_270(state->rotation)) {
+	if (state->fb && drm_rotation_90_or_270(state->rotation)) {
 		char *format_name;
+
 		if (!(state->fb->modifier[0] == I915_FORMAT_MOD_Y_TILED ||
 			state->fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED)) {
 			DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n");

drivers/gpu/drm/i915/intel_display.c

@@ -2139,7 +2139,7 @@ intel_fill_fb_ggtt_view(struct i915_ggtt_view *view,
 			const struct drm_framebuffer *fb,
 			unsigned int rotation)
 {
-	if (intel_rotation_90_or_270(rotation)) {
+	if (drm_rotation_90_or_270(rotation)) {
 		*view = i915_ggtt_view_rotated;
 		view->params.rotated = to_intel_framebuffer(fb)->rot_info;
 	} else {
@@ -2260,7 +2260,7 @@ void intel_unpin_fb_obj(struct drm_framebuffer *fb, unsigned int rotation)
 static int intel_fb_pitch(const struct drm_framebuffer *fb, int plane,
 			  unsigned int rotation)
 {
-	if (intel_rotation_90_or_270(rotation))
+	if (drm_rotation_90_or_270(rotation))
 		return to_intel_framebuffer(fb)->rotated[plane].pitch;
 	else
 		return fb->pitches[plane];
@@ -2296,7 +2296,7 @@ void intel_add_fb_offsets(int *x, int *y,
 	const struct intel_framebuffer *intel_fb = to_intel_framebuffer(state->base.fb);
 	unsigned int rotation = state->base.rotation;
 
-	if (intel_rotation_90_or_270(rotation)) {
+	if (drm_rotation_90_or_270(rotation)) {
 		*x += intel_fb->rotated[plane].x;
 		*y += intel_fb->rotated[plane].y;
 	} else {
@@ -2360,7 +2360,7 @@ static u32 intel_adjust_tile_offset(int *x, int *y,
 		intel_tile_dims(dev_priv, &tile_width, &tile_height,
 				fb->modifier[plane], cpp);
 
-		if (intel_rotation_90_or_270(rotation)) {
+		if (drm_rotation_90_or_270(rotation)) {
 			pitch_tiles = pitch / tile_height;
 			swap(tile_width, tile_height);
 		} else {
@@ -2416,7 +2416,7 @@ static u32 _intel_compute_tile_offset(const struct drm_i915_private *dev_priv,
 		intel_tile_dims(dev_priv, &tile_width, &tile_height,
 				fb_modifier, cpp);
 
-		if (intel_rotation_90_or_270(rotation)) {
+		if (drm_rotation_90_or_270(rotation)) {
 			pitch_tiles = pitch / tile_height;
 			swap(tile_width, tile_height);
 		} else {
@@ -2976,7 +2976,7 @@ int skl_check_plane_surface(struct intel_plane_state *plane_state)
 	int ret;
 
 	/* Rotate src coordinates to match rotated GTT view */
-	if (intel_rotation_90_or_270(rotation))
+	if (drm_rotation_90_or_270(rotation))
 		drm_rect_rotate(&plane_state->base.src,
 				fb->width, fb->height, DRM_ROTATE_270);
 
@@ -3276,7 +3276,7 @@ u32 skl_plane_stride(const struct drm_framebuffer *fb, int plane,
 	 * The stride is either expressed as a multiple of 64 bytes chunks for
 	 * linear buffers or in number of tiles for tiled buffers.
 	 */
-	if (intel_rotation_90_or_270(rotation)) {
+	if (drm_rotation_90_or_270(rotation)) {
 		int cpp = drm_format_plane_cpp(fb->pixel_format, plane);
 
 		stride /= intel_tile_height(dev_priv, fb->modifier[0], cpp);
@@ -4666,7 +4666,7 @@ skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
 		to_intel_crtc(crtc_state->base.crtc);
 	int need_scaling;
 
-	need_scaling = intel_rotation_90_or_270(rotation) ?
+	need_scaling = drm_rotation_90_or_270(rotation) ?
 		(src_h != dst_w || src_w != dst_h):
 		(src_w != dst_w || src_h != dst_h);
 

drivers/gpu/drm/i915/intel_drv.h

@@ -1284,12 +1284,6 @@ int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
 unsigned int intel_tile_height(const struct drm_i915_private *dev_priv,
 			       uint64_t fb_modifier, unsigned int cpp);
 
-static inline bool
-intel_rotation_90_or_270(unsigned int rotation)
-{
-	return rotation & (DRM_ROTATE_90 | DRM_ROTATE_270);
-}
-
 void intel_create_rotation_property(struct drm_device *dev,
 					struct intel_plane *plane);
 

drivers/gpu/drm/i915/intel_fbc.c

@@ -84,7 +84,7 @@ static void intel_fbc_get_plane_source_size(struct intel_fbc_state_cache *cache,
 {
 	int w, h;
 
-	if (intel_rotation_90_or_270(cache->plane.rotation)) {
+	if (drm_rotation_90_or_270(cache->plane.rotation)) {
 		w = cache->plane.src_h;
 		h = cache->plane.src_w;
 	} else {

drivers/gpu/drm/i915/intel_pm.c

@@ -3151,7 +3151,7 @@ skl_plane_downscale_amount(const struct intel_plane_state *pstate)
 	src_h = drm_rect_height(&pstate->base.src);
 	dst_w = drm_rect_width(&pstate->base.dst);
 	dst_h = drm_rect_height(&pstate->base.dst);
-	if (intel_rotation_90_or_270(pstate->base.rotation))
+	if (drm_rotation_90_or_270(pstate->base.rotation))
 		swap(dst_w, dst_h);
 
 	downscale_h = max(src_h / dst_h, (uint32_t)DRM_PLANE_HELPER_NO_SCALING);
@@ -3182,7 +3182,7 @@ skl_plane_relative_data_rate(const struct intel_crtc_state *cstate,
 	width = drm_rect_width(&intel_pstate->base.src) >> 16;
 	height = drm_rect_height(&intel_pstate->base.src) >> 16;
 
-	if (intel_rotation_90_or_270(pstate->rotation))
+	if (drm_rotation_90_or_270(pstate->rotation))
 		swap(width, height);
 
 	/* for planar format */
@@ -3282,7 +3282,7 @@ skl_ddb_min_alloc(const struct drm_plane_state *pstate,
 	src_w = drm_rect_width(&intel_pstate->base.src) >> 16;
 	src_h = drm_rect_height(&intel_pstate->base.src) >> 16;
 
-	if (intel_rotation_90_or_270(pstate->rotation))
+	if (drm_rotation_90_or_270(pstate->rotation))
 		swap(src_w, src_h);
 
 	/* Halve UV plane width and height for NV12 */
@@ -3296,7 +3296,7 @@ skl_ddb_min_alloc(const struct drm_plane_state *pstate,
 	else
 		plane_bpp = drm_format_plane_cpp(fb->pixel_format, 0);
 
-	if (intel_rotation_90_or_270(pstate->rotation)) {
+	if (drm_rotation_90_or_270(pstate->rotation)) {
 		switch (plane_bpp) {
 		case 1:
 			min_scanlines = 32;
@@ -3554,7 +3554,7 @@ static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
 	width = drm_rect_width(&intel_pstate->base.src) >> 16;
 	height = drm_rect_height(&intel_pstate->base.src) >> 16;
 
-	if (intel_rotation_90_or_270(pstate->rotation))
+	if (drm_rotation_90_or_270(pstate->rotation))
 		swap(width, height);
 
 	cpp = drm_format_plane_cpp(fb->pixel_format, 0);
@@ -3575,7 +3575,7 @@ static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
 	    fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED) {
 		uint32_t min_scanlines = 4;
 		uint32_t y_tile_minimum;
-		if (intel_rotation_90_or_270(pstate->rotation)) {
+		if (drm_rotation_90_or_270(pstate->rotation)) {
 			int cpp = (fb->pixel_format == DRM_FORMAT_NV12) ?
 				drm_format_plane_cpp(fb->pixel_format, 1) :
 				drm_format_plane_cpp(fb->pixel_format, 0);

drivers/gpu/drm/omapdrm/omap_plane.c

@@ -108,16 +108,12 @@ static void omap_plane_atomic_update(struct drm_plane *plane,
 	win.src_x = state->src_x >> 16;
 	win.src_y = state->src_y >> 16;
 
-	switch (state->rotation & DRM_ROTATE_MASK) {
-	case DRM_ROTATE_90:
-	case DRM_ROTATE_270:
+	if (drm_rotation_90_or_270(state->rotation)) {
 		win.src_w = state->src_h >> 16;
 		win.src_h = state->src_w >> 16;
-		break;
-	default:
+	} else {
 		win.src_w = state->src_w >> 16;
 		win.src_h = state->src_h >> 16;
-		break;
 	}
 
 	/* update scanout: */

include/drm/drm_blend.h

@@ -47,6 +47,11 @@ struct drm_atomic_state;
 #define DRM_REFLECT_Y	BIT(5)
 #define DRM_REFLECT_MASK (DRM_REFLECT_X | DRM_REFLECT_Y)
 
+static inline bool drm_rotation_90_or_270(unsigned int rotation)
+{
+	return rotation & (DRM_ROTATE_90 | DRM_ROTATE_270);
+}
+
 struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
 						       unsigned int supported_rotations);
 unsigned int drm_rotation_simplify(unsigned int rotation,