drm/i915: Refactor icl_is_hdr_plane

Change the api in order to enable callers that can't supply a valid
intel_plane pointer, as would be the case prior to calling
drm_universal_plane_init.

v4:
- Rename variables and move a declaration (Ville)

v6:
- Rebase and fix merge conflict

Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Kevin Strasser <kevin.strasser@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1552437513-22648-3-git-send-email-kevin.strasser@intel.com

drivers/gpu/drm/i915/intel_atomic.c

@@ -234,10 +234,11 @@ static void intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_sta
 	if (plane_state && plane_state->base.fb &&
 	    plane_state->base.fb->format->is_yuv &&
 	    plane_state->base.fb->format->num_planes > 1) {
+		struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
 		if (IS_GEN(dev_priv, 9) &&
 		    !IS_GEMINILAKE(dev_priv)) {
 			mode = SKL_PS_SCALER_MODE_NV12;
-		} else if (icl_is_hdr_plane(to_intel_plane(plane_state->base.plane))) {
+		} else if (icl_is_hdr_plane(dev_priv, plane->id)) {
 			/*
 			 * On gen11+'s HDR planes we only use the scaler for
 			 * scaling. They have a dedicated chroma upsampler, so

drivers/gpu/drm/i915/intel_display.c

@@ -3808,6 +3808,8 @@ u32 glk_plane_color_ctl_crtc(const struct intel_crtc_state *crtc_state)
 u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state,
 			const struct intel_plane_state *plane_state)
 {
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->base.plane->dev);
 	const struct drm_framebuffer *fb = plane_state->base.fb;
 	struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
 	u32 plane_color_ctl = 0;
@@ -3815,7 +3817,7 @@ u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state,
 	plane_color_ctl |= PLANE_COLOR_PLANE_GAMMA_DISABLE;
 	plane_color_ctl |= glk_plane_color_ctl_alpha(plane_state);
 
-	if (fb->format->is_yuv && !icl_is_hdr_plane(plane)) {
+	if (fb->format->is_yuv && !icl_is_hdr_plane(dev_priv, plane->id)) {
 		if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
 			plane_color_ctl |= PLANE_COLOR_CSC_MODE_YUV709_TO_RGB709;
 		else
@@ -5141,13 +5143,14 @@ static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
 {
 	struct intel_plane *intel_plane =
 		to_intel_plane(plane_state->base.plane);
+	struct drm_i915_private *dev_priv = to_i915(intel_plane->base.dev);
 	struct drm_framebuffer *fb = plane_state->base.fb;
 	int ret;
 	bool force_detach = !fb || !plane_state->base.visible;
 	bool need_scaler = false;
 
 	/* Pre-gen11 and SDR planes always need a scaler for planar formats. */
-	if (!icl_is_hdr_plane(intel_plane) &&
+	if (!icl_is_hdr_plane(dev_priv, intel_plane->id) &&
 	    fb && is_planar_yuv_format(fb->format->format))
 		need_scaler = true;
 

drivers/gpu/drm/i915/intel_drv.h

@@ -2325,12 +2325,13 @@ static inline bool icl_is_nv12_y_plane(enum plane_id id)
 	return false;
 }
 
-static inline bool icl_is_hdr_plane(struct intel_plane *plane)
+static inline bool icl_is_hdr_plane(struct drm_i915_private *dev_priv,
+				    enum plane_id plane_id)
 {
-	if (INTEL_GEN(to_i915(plane->base.dev)) < 11)
+	if (INTEL_GEN(dev_priv) < 11)
 		return false;
 
-	return plane->id < PLANE_SPRITE2;
+	return plane_id < PLANE_SPRITE2;
 }
 
 /* intel_tv.c */

drivers/gpu/drm/i915/intel_sprite.c

@@ -349,7 +349,7 @@ skl_program_scaler(struct intel_plane *plane,
 
 	/* TODO: handle sub-pixel coordinates */
 	if (is_planar_yuv_format(plane_state->base.fb->format->format) &&
-	    !icl_is_hdr_plane(plane)) {
+	    !icl_is_hdr_plane(dev_priv, plane->id)) {
 		y_hphase = skl_scaler_calc_phase(1, hscale, false);
 		y_vphase = skl_scaler_calc_phase(1, vscale, false);
 
@@ -531,7 +531,7 @@ skl_program_plane(struct intel_plane *plane,
 	I915_WRITE_FW(PLANE_AUX_DIST(pipe, plane_id),
 		      (plane_state->color_plane[1].offset - surf_addr) | aux_stride);
 
-	if (icl_is_hdr_plane(plane)) {
+	if (icl_is_hdr_plane(dev_priv, plane_id)) {
 		u32 cus_ctl = 0;
 
 		if (linked) {
@@ -555,7 +555,7 @@ skl_program_plane(struct intel_plane *plane,
 	if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
 		I915_WRITE_FW(PLANE_COLOR_CTL(pipe, plane_id), plane_color_ctl);
 
-	if (fb->format->is_yuv && icl_is_hdr_plane(plane))
+	if (fb->format->is_yuv && icl_is_hdr_plane(dev_priv, plane_id))
 		icl_program_input_csc(plane, crtc_state, plane_state);
 
 	skl_write_plane_wm(plane, crtc_state);