From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Tue, 23 Jan 2018 20:33:43 +0200
Subject: drm/i915: Use enum plane_id for frontbuffer tracking
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Git-commit: c19e1124e7e8cb1f8fbb685fd9b7d0a42087bd62
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

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.

v2: Drop the unintended whitespace change (Chris)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180123183343.9181-1-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Petr Tesarik <ptesarik@suse.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  |    2 +-
 4 files changed, 7 insertions(+), 12 deletions(-)

--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2411,16 +2411,11 @@ 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)))
 
--- 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_i9
 	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_i91
 	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;
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -1372,7 +1372,7 @@ void intel_fbc_init(struct drm_i915_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;
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1427,7 +1427,7 @@ intel_sprite_plane_create(struct drm_i91
 	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);