From: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org
Cc: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Subject: [PATCH v6 9/9] v4l: vsp1: Reduce display list body size
Date: Wed, 28 Feb 2018 20:52:43 +0000 [thread overview]
Message-ID: <e0ad4e839ffffb002ced5e960b43f5a54cd0260e.1519850924.git-series.kieran.bingham+renesas@ideasonboard.com> (raw)
In-Reply-To: <cover.d841c9354585c652c97473ace29c877b9395e83b.1519850924.git-series.kieran.bingham+renesas@ideasonboard.com>
In-Reply-To: <cover.d841c9354585c652c97473ace29c877b9395e83b.1519850924.git-series.kieran.bingham+renesas@ideasonboard.com>
The display list originally allocated a body of 256 entries to store all
of the register lists required for each frame.
This has now been separated into fragments for constant stream setup, and
runtime updates.
Empirical testing shows that the body0 now uses a maximum of 41
registers for each frame, for both DRM and Video API pipelines thus a
rounded 64 entries provides a suitable allocation.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
---
drivers/media/platform/vsp1/vsp1_dl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/vsp1/vsp1_dl.c b/drivers/media/platform/vsp1/vsp1_dl.c
index a762e840d147..6b5743a431a2 100644
--- a/drivers/media/platform/vsp1/vsp1_dl.c
+++ b/drivers/media/platform/vsp1/vsp1_dl.c
@@ -21,7 +21,7 @@
#include "vsp1.h"
#include "vsp1_dl.h"
-#define VSP1_DL_NUM_ENTRIES 256
+#define VSP1_DL_NUM_ENTRIES 64
#define VSP1_DLH_INT_ENABLE (1 << 1)
#define VSP1_DLH_AUTO_START (1 << 0)
--
git-series 0.9.1
next prev parent reply other threads:[~2018-02-28 20:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-28 20:52 [PATCH v6 0/9] vsp1: TLB optimisation and DL caching Kieran Bingham
2018-02-28 20:52 ` [PATCH v6 1/9] v4l: vsp1: Reword uses of 'fragment' as 'body' Kieran Bingham
2018-02-28 20:52 ` [PATCH v6 2/9] v4l: vsp1: Protect bodies against overflow Kieran Bingham
2018-02-28 20:52 ` [PATCH v6 3/9] v4l: vsp1: Provide a body pool Kieran Bingham
2018-02-28 20:52 ` [PATCH v6 4/9] v4l: vsp1: Convert display lists to use new " Kieran Bingham
2018-02-28 20:52 ` [PATCH v6 5/9] v4l: vsp1: Use reference counting for bodies Kieran Bingham
2018-02-28 20:52 ` [PATCH v6 6/9] v4l: vsp1: Refactor display list configure operations Kieran Bingham
2018-02-28 20:52 ` [PATCH v6 7/9] v4l: vsp1: Adapt entities to configure into a body Kieran Bingham
2018-02-28 20:52 ` [PATCH v6 8/9] v4l: vsp1: Move video configuration to a cached dlb Kieran Bingham
2018-02-28 20:52 ` Kieran Bingham [this message]
2018-05-20 7:04 ` [PATCH v6 9/9] v4l: vsp1: Reduce display list body size Laurent Pinchart
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