[Intel-gfx] [PATCH v3 09/10] drm/i915: Use plane->get_hw_state() for initial plane fb readout

[Ville Syrjala]

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

Since we now have a ->get_hw_state() method for planes, let's use
that during the initial plane fb readout.

v2: s/plane/i9xx_plane/ etc. (James)

Cc: James Ausmus <james.ausmus at intel.com>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Suggested-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Reviewed-by: James Ausmus <james.ausmus at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 62cc2a600205..ed58311e8da0 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7413,8 +7413,7 @@ i9xx_get_initial_plane_config(struct intel_crtc *crtc,
 	struct drm_framebuffer *fb;
 	struct intel_framebuffer *intel_fb;
 
-	val = I915_READ(DSPCNTR(i9xx_plane));
-	if (!(val & DISPLAY_PLANE_ENABLE))
+	if (!plane->get_hw_state(plane))
 		return;
 
 	intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
@@ -7427,6 +7426,8 @@ i9xx_get_initial_plane_config(struct intel_crtc *crtc,
 
 	fb->dev = dev;
 
+	val = I915_READ(DSPCNTR(i9xx_plane));
+
 	if (INTEL_GEN(dev_priv) >= 4) {
 		if (val & DISPPLANE_TILED) {
 			plane_config->tiling = I915_TILING_X;
@@ -8442,6 +8443,9 @@ skylake_get_initial_plane_config(struct intel_crtc *crtc,
 	struct drm_framebuffer *fb;
 	struct intel_framebuffer *intel_fb;
 
+	if (!plane->get_hw_state(plane))
+		return;
+
 	intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
 	if (!intel_fb) {
 		DRM_DEBUG_KMS("failed to alloc fb\n");
@@ -8453,8 +8457,6 @@ skylake_get_initial_plane_config(struct intel_crtc *crtc,
 	fb->dev = dev;
 
 	val = I915_READ(PLANE_CTL(pipe, plane_id));
-	if (!(val & PLANE_CTL_ENABLE))
-		goto error;
 
 	pixel_format = val & PLANE_CTL_FORMAT_MASK;
 
-- 
2.13.6