Hello,
This patchset finally perform cleanup of custom code in s5p-mfc codec
driver. The first part is removal of custom, driver specific code for
intializing and handling of reserved memory. Instead, a generic code for
reserved memory regions is used. Then, once it is done, the proper setup
of DMA parameters (max segment size) is applied for all multimedia
devices found on Exynos SoCs to let them properly handle shared buffers
mapped into contiguous DMA address space. The last patch adds support
for IOMMU to MFC driver. Some additional code is needed because of
specific requirements of MFC device firmware (see patch 7 for more
details). When no IOMMU is available, the code fallbacks to generic
reserved memory regions.
After applying this patchset, MFC device works correctly when IOMMU is
either enabled or disabled.
Patches have been tested on top of linux-next from 20151207. I would
prefer to merge patches 1-2 via Samsung tree and patches 3-7 via media
tree (there are no compile-time dependencies between patches 1-2 and
3-7). Patches have been tested on Odroid U3 (Exynos 4412 based) and
Odroid XU3 (Exynos 5422 based) boards.
Best regards
Marek Szyprowski
Samsung R&D Institute Poland
Patch summary:
Marek Szyprowski (7):
ARM: Exynos: convert MFC device to generic reserved memory bindings
ARM: dts: exynos4412-odroid*: enable MFC device
of: reserved_mem: add support for named reserved mem nodes
media: vb2-dma-contig: add helper for setting dma max seg size
media: set proper max seg size for devices on Exynos SoCs
media: s5p-mfc: replace custom reserved memory init code with generic
one
media: s5p-mfc: add iommu support
.../devicetree/bindings/media/s5p-mfc.txt | 16 +--
arch/arm/boot/dts/exynos4210-origen.dts | 22 ++-
arch/arm/boot/dts/exynos4210-smdkv310.dts | 22 ++-
arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 24 ++++
arch/arm/boot/dts/exynos4412-origen.dts | 22 ++-
arch/arm/boot/dts/exynos4412-smdk4412.dts | 22 ++-
arch/arm/boot/dts/exynos5250-arndale.dts | 22 ++-
arch/arm/boot/dts/exynos5250-smdk5250.dts | 22 ++-
arch/arm/boot/dts/exynos5250-spring.dts | 22 ++-
arch/arm/boot/dts/exynos5420-arndale-octa.dts | 22 ++-
arch/arm/boot/dts/exynos5420-smdk5420.dts | 22 ++-
arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi | 22 ++-
arch/arm/mach-exynos/Makefile | 2 -
arch/arm/mach-exynos/exynos.c | 19 ---
arch/arm/mach-exynos/mfc.h | 16 ---
arch/arm/mach-exynos/s5p-dev-mfc.c | 94 -------------
drivers/media/platform/exynos-gsc/gsc-core.c | 1 +
drivers/media/platform/exynos4-is/fimc-core.c | 1 +
drivers/media/platform/exynos4-is/fimc-is.c | 1 +
drivers/media/platform/exynos4-is/fimc-lite.c | 1 +
drivers/media/platform/s5p-g2d/g2d.c | 1 +
drivers/media/platform/s5p-jpeg/jpeg-core.c | 1 +
drivers/media/platform/s5p-mfc/s5p_mfc.c | 153 ++++++++++++---------
drivers/media/platform/s5p-mfc/s5p_mfc_iommu.h | 79 +++++++++++
drivers/media/platform/s5p-tv/mixer_video.c | 1 +
drivers/media/v4l2-core/videobuf2-dma-contig.c | 15 ++
drivers/of/of_reserved_mem.c | 101 +++++++++++---
include/linux/of_reserved_mem.h | 6 +-
include/media/videobuf2-dma-contig.h | 1 +
29 files changed, 505 insertions(+), 248 deletions(-)
delete mode 100644 arch/arm/mach-exynos/mfc.h
delete mode 100644 arch/arm/mach-exynos/s5p-dev-mfc.c
create mode 100644 drivers/media/platform/s5p-mfc/s5p_mfc_iommu.h
--
1.9.2
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