[Intel-gfx] [PATCH] drm/i915: Use enum plane_id for frontbuffer tracking

[Ville Syrjala]

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

Replace the ad-hoc plane indexing scheme used by the frontbuffer
tracking with enum plane_id.

The old video overlay not being part of the plane_id namespace
will just be given the high bit.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h      | 11 +++--------
 drivers/gpu/drm/i915/intel_display.c |  4 ++--
 drivers/gpu/drm/i915/intel_fbc.c     |  2 +-
 drivers/gpu/drm/i915/intel_sprite.c  |  4 +++-
 4 files changed, 9 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 8333692dac5a..bd545b1c9546 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2404,16 +2404,11 @@ enum hdmi_force_audio {
  *
  * We have one bit per pipe and per scanout plane type.
  */
-#define INTEL_MAX_SPRITE_BITS_PER_PIPE 5
 #define INTEL_FRONTBUFFER_BITS_PER_PIPE 8
-#define INTEL_FRONTBUFFER_PRIMARY(pipe) \
-	(1 << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
-#define INTEL_FRONTBUFFER_CURSOR(pipe) \
-	(1 << (1 + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
-#define INTEL_FRONTBUFFER_SPRITE(pipe, plane) \
-	(1 << (2 + plane + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
+#define INTEL_FRONTBUFFER(pipe, plane_id) \
+	(1 << ((plane_id) + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
 #define INTEL_FRONTBUFFER_OVERLAY(pipe) \
-	(1 << (2 + INTEL_MAX_SPRITE_BITS_PER_PIPE + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
+	(1 << (INTEL_FRONTBUFFER_BITS_PER_PIPE - 1 + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
 #define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
 	(0xff << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index d585ce4c8732..3cc35add362f 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13168,7 +13168,7 @@ intel_primary_plane_create(struct drm_i915_private *dev_priv, enum pipe pipe)
 	else
 		primary->i9xx_plane = (enum i9xx_plane_id) pipe;
 	primary->id = PLANE_PRIMARY;
-	primary->frontbuffer_bit = INTEL_FRONTBUFFER_PRIMARY(pipe);
+	primary->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, primary->id);
 	primary->check_plane = intel_check_primary_plane;
 
 	if (INTEL_GEN(dev_priv) >= 9) {
@@ -13289,7 +13289,7 @@ intel_cursor_plane_create(struct drm_i915_private *dev_priv,
 	cursor->pipe = pipe;
 	cursor->i9xx_plane = (enum i9xx_plane_id) pipe;
 	cursor->id = PLANE_CURSOR;
-	cursor->frontbuffer_bit = INTEL_FRONTBUFFER_CURSOR(pipe);
+	cursor->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, cursor->id);
 
 	if (IS_I845G(dev_priv) || IS_I865G(dev_priv)) {
 		cursor->update_plane = i845_update_cursor;
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 9dc2b8b5f2db..a8a8a80497a8 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -1373,7 +1373,7 @@ void intel_fbc_init(struct drm_i915_private *dev_priv)
 
 	for_each_pipe(dev_priv, pipe) {
 		fbc->possible_framebuffer_bits |=
-				INTEL_FRONTBUFFER_PRIMARY(pipe);
+			INTEL_FRONTBUFFER(pipe, PLANE_PRIMARY);
 
 		if (fbc_on_pipe_a_only(dev_priv))
 			break;
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index a92c748ca8ab..18ef0392362e 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -345,6 +345,8 @@ skl_plane_get_hw_state(struct intel_plane *plane)
 	return ret;
 }
 
+
+
 static void
 chv_update_csc(struct intel_plane *plane, uint32_t format)
 {
@@ -1427,7 +1429,7 @@ intel_sprite_plane_create(struct drm_i915_private *dev_priv,
 	intel_plane->pipe = pipe;
 	intel_plane->i9xx_plane = plane;
 	intel_plane->id = PLANE_SPRITE0 + plane;
-	intel_plane->frontbuffer_bit = INTEL_FRONTBUFFER_SPRITE(pipe, plane);
+	intel_plane->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, intel_plane->id);
 	intel_plane->check_plane = intel_check_sprite_plane;
 
 	possible_crtcs = (1 << pipe);
-- 
2.13.6