Hello,
These patches are a proof-of-concept implementation of lossy compression and
decompression support for the VSP driver.
Patches for the whole stack are needed, in the ARM trusted firmware BL2, U-Boot
and the Linux kernel. For convenience, and because this is an RFC, I've included
them all in a single series.
The ARM trusted firmware and U-Boot patches are based on the Renesas firmware
v2.16.0, which contains
git://github.com/renesas-rcar/arm-trusted-firmware.git#c040be5a757a945da75cf97d3a3e1db3a43168f9
git://github.com/renesas-rcar/u-boot.git#rcar-3.5.0
The kernel patches are based on v4.14-rc2, which contains the following required
v4.14-rc1 regression fix.
commit 6d57339890c9a9dfcd4ba4f8931b911b962968e3
Author: Arnd Bergmann <arnd@xxxxxxxx>
Date: Fri Sep 15 17:08:16 2017 +0200
dma-coherent: fix rmem_dma_device_init regression
The DT bindings and userspace APIs are really work in progress. In particular
allocation of lossy decompression memory (implemented in the VSP driver in
13/13) should probably not be specific to the VSP.
A preliminary test that exercices the compression and decompression is available
from
git://git.ideasonboard.com/renesas/vsp-tests.git#fcnl
The test currently passes unconditionally without attempting to check whether
the results are correct.
Laurent Pinchart (13):
dt-bindings: reserved-memory: Add binding for the Renesas lossy
decompression area
dt-bindings: media: renesas-fcp: Add a compatible string for VSPI FCP
dt-bindings: media: renesas-fcp: Add memory-region property
arm64: dts: renesas: Use renesas,fcpvi compatible string
arm64: dts: r8a7795: Add lossy decompression reserved memory nodes
arm64: dts: r8a7795: Reference the lossy memory region from the FCPss
arm64: dts: r8a7795: Add dma-ranges property in the /soc node
v4l: rcar-fcp: Check device revision at probe time
v4l: rcar-fcp: Configure the number of outstanding read transactions
v4l: rcar-fcp: Prepare driver API for FCNL support
v4l: rcar-fcp: Support FCNL decompression
v4l: vsp1: Add support for near-lossless compression (FCNL) in the WPF
v4l: vsp1: Add support for near-lossless compression (FCNL) in the RPF
.../devicetree/bindings/media/renesas,fcp.txt | 10 +-
.../renesas,lossy-decompression.txt | 102 ++++++
arch/arm64/boot/dts/renesas/r8a7795-es1.dtsi | 2 +-
arch/arm64/boot/dts/renesas/r8a7795.dtsi | 58 +++-
arch/arm64/boot/dts/renesas/r8a7796.dtsi | 2 +-
drivers/media/platform/rcar-fcp.c | 358 ++++++++++++++++++++-
drivers/media/platform/vsp1/vsp1.h | 1 +
drivers/media/platform/vsp1/vsp1_drv.c | 10 +-
drivers/media/platform/vsp1/vsp1_pipe.c | 57 ++--
drivers/media/platform/vsp1/vsp1_pipe.h | 2 +
drivers/media/platform/vsp1/vsp1_regs.h | 1 +
drivers/media/platform/vsp1/vsp1_rwpf.c | 50 +++
drivers/media/platform/vsp1/vsp1_rwpf.h | 1 +
drivers/media/platform/vsp1/vsp1_video.c | 22 +-
drivers/media/platform/vsp1/vsp1_wpf.c | 17 +-
include/media/rcar-fcp.h | 14 +-
16 files changed, 650 insertions(+), 57 deletions(-)
create mode 100644 Documentation/devicetree/bindings/reserved-memory/renesas,lossy-decompression.txt
--
Regards,
Laurent Pinchart
