[Intel-gfx] [PATCH 1/2] drm/i915: Move 90/270 rotation validity check into its own function

[Juha-Pekka Heikkila]

This makes intel_plane_atomic_check_with_state() generally shorter.

Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
---
 drivers/gpu/drm/i915/intel_atomic_plane.c | 53 +++++++++++++++++--------------
 1 file changed, 30 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index 8e6dc15..6c4c82e2d 100644
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -107,6 +107,35 @@ intel_plane_destroy_state(struct drm_plane *plane,
 	drm_atomic_helper_plane_destroy_state(plane, state);
 }
 
+static bool intel_valid_rotation(const struct drm_plane_state *state)
+{
+	struct drm_format_name_buf format_name;
+
+	if (state->fb->modifier != I915_FORMAT_MOD_Y_TILED &&
+	    state->fb->modifier != I915_FORMAT_MOD_Yf_TILED) {
+		DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n");
+		return false;
+	}
+
+	/*
+	 * 90/270 is not allowed with RGB64 16:16:16:16,
+	 * RGB 16-bit 5:6:5, and Indexed 8-bit.
+	 * TBD: Add RGB64 case once its added in supported format list.
+	 */
+	switch (state->fb->format->format) {
+	case DRM_FORMAT_C8:
+	case DRM_FORMAT_RGB565:
+		DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n",
+			      drm_get_format_name(state->fb->format->format,
+						  &format_name));
+		return false;
+
+	default:
+		break;
+	}
+	return true;
+}
+
 int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state,
 					struct intel_crtc_state *crtc_state,
 					const struct intel_plane_state *old_plane_state,
@@ -138,30 +167,8 @@ int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_
 		crtc_state->base.enable ? crtc_state->pipe_src_h : 0;
 
 	if (state->fb && drm_rotation_90_or_270(state->rotation)) {
-		struct drm_format_name_buf format_name;
-
-		if (state->fb->modifier != I915_FORMAT_MOD_Y_TILED &&
-		    state->fb->modifier != I915_FORMAT_MOD_Yf_TILED) {
-			DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n");
+		if (!intel_valid_rotation(state))
 			return -EINVAL;
-		}
-
-		/*
-		 * 90/270 is not allowed with RGB64 16:16:16:16,
-		 * RGB 16-bit 5:6:5, and Indexed 8-bit.
-		 * TBD: Add RGB64 case once its added in supported format list.
-		 */
-		switch (state->fb->format->format) {
-		case DRM_FORMAT_C8:
-		case DRM_FORMAT_RGB565:
-			DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n",
-			              drm_get_format_name(state->fb->format->format,
-			                                  &format_name));
-			return -EINVAL;
-
-		default:
-			break;
-		}
 	}
 
 	/* CHV ignores the mirror bit when the rotate bit is set :( */
-- 
2.7.4