Hello, This is a second version of the Samsung IOMMU driver, videobuf2 allocator for IOMMU mapped memory and FIMC driver update. The main change from the previous version is a complete rewrite of the IOMMU driver API. As suggested by Arnd Bergmann we decided to drop the custom interface and use the kernel wide, common iommu API defined in linux/include/iommu.h. This way the videobuf2 iommu allocator become much more generic framework, because it is no longer tied to any particular iommu implementation. This patch series introduces new type of videbuf2 memory allocator - vb2-dma-iommu. This allocator can be used on the platforms that support linux/include/iommu.h style IOMMU driver. An IOMMU driver for Samsung EXYNOS4 (called SYSMMU) platform is also included. The allocator and IOMMU driver is then used by s5p-fimc driver. To make it possible some additional changes are required. Mainly the platform support for s5p-fimc for EXYNOS4 machines need to be defined. The proposed solution has been tested on Universal C210 board (Samsung S5PC210/EXYNOS4 based). This IOMMU allocator has no dependences on any external subsystems. We also ported s5p-mfc and s5p-tv drivers to this allocator, they will be posted in separate patch series. This will enable to get them working on mainline Linux kernel for EXYNOS4 platform. Support for S5PV210/S5PC110 platform still depends on CMA allocator that needs more discussion on memory management mailing list and further development. The patches with updated s5p-mfc and s5p-tv drivers will follow. To get FIMC module working on EXYNOS4 platform on UniversalC210 board we also added support for power domains and power gating. This patch series contains a collection of patches for various platform subsystems. Here is a detailed list: [PATCH 1/7] ARM: EXYNOS4: power domains: fixes and code cleanup - adds support for block gating in Samsung power domain driver and performs some cleanup [PATCH 2/7] ARM: Samsung: update/rewrite Samsung SYSMMU (IOMMU) driver - a complete rewrite of sysmmu driver for Samsung platform, now uses linux/include/iommu.h api [PATCH 3/7] v4l: videobuf2: dma-sg: move some generic functions to memops - a little cleanup and preparations for the dma-iommu allocator [PATCH 4/7] v4l: videobuf2: add IOMMU based DMA memory allocator - introduces new memory allocator for videobuf2 for drivers that support iommu dma memory mappings [PATCH 5/7] v4l: s5p-fimc: add pm_runtime support - adds support for pm_runtime in s5p-fimc driver [PATCH 6/7] v4l: s5p-fimc: Add support for vb2-dma-iommu allocator - adds support for the newly introduces videbuf2-s5p-iommu allocator on EXYNOS4 platform [PATCH 7/7] ARM: EXYNOS4: enable FIMC on Universal_C210 - adds all required machine definitions to get FIMC modules working on Universal C210 boards Changelog: V2: - custom SYSMMU interface has been dropped in favour of linux/include/iommu.h and rewritten SYSMMU driver again - added support to SYSMMU for mapping pages larger than 4Kb - dropped ARM shared mode - videobuf2-s5p-iommu allocator has been renamed to videobuf2-dma-iommu, because it has no dependenco on any Samsung platform specific API, the allocator still uses only 4Kb pages, but this will be changed in the next version - dropped FIMC platform patch that have been merged mainline - rebased all patches onto Linux kernel v2.6.39-rc1 V1: http://www.spinics.net/lists/linux-media/msg29751.html Best regards -- Marek Szyprowski Samsung Poland R&D Center Complete patch summary: Andrzej Pietrasiewicz (3): ARM: Samsung: update/rewrite Samsung SYSMMU (IOMMU) driver v4l: videobuf2: dma-sg: move some generic functions to memops v4l: videobuf2: add IOMMU based DMA memory allocator Marek Szyprowski (3): v4l: s5p-fimc: add pm_runtime support v4l: s5p-fimc: Add support for vb2-dma-iommu allocator ARM: EXYNOS4: enable FIMC on Universal_C210 Tomasz Stanislawski (1): ARM: EXYNOS4: power domains: fixes and code cleanup arch/arm/mach-exynos4/Kconfig | 6 + arch/arm/mach-exynos4/clock.c | 68 +- arch/arm/mach-exynos4/dev-pd.c | 93 ++- arch/arm/mach-exynos4/dev-sysmmu.c | 615 ++++++++----- arch/arm/mach-exynos4/include/mach/irqs.h | 35 +- arch/arm/mach-exynos4/include/mach/regs-clock.h | 7 + arch/arm/mach-exynos4/include/mach/sysmmu.h | 46 - arch/arm/mach-exynos4/mach-universal_c210.c | 22 + arch/arm/plat-s5p/Kconfig | 20 +- arch/arm/plat-s5p/include/plat/sysmmu.h | 165 ++-- arch/arm/plat-s5p/sysmmu.c | 1103 ++++++++++++++++------- arch/arm/plat-samsung/include/plat/devs.h | 2 +- arch/arm/plat-samsung/include/plat/pd.h | 1 + drivers/media/video/Kconfig | 11 +- drivers/media/video/Makefile | 1 + drivers/media/video/s5p-fimc/fimc-capture.c | 9 +- drivers/media/video/s5p-fimc/fimc-core.c | 38 +- drivers/media/video/s5p-fimc/fimc-core.h | 1 + drivers/media/video/s5p-fimc/fimc-mem.h | 103 +++ drivers/media/video/videobuf2-dma-iommu.c | 469 ++++++++++ drivers/media/video/videobuf2-dma-sg.c | 37 +- drivers/media/video/videobuf2-memops.c | 76 ++ include/media/videobuf2-dma-iommu.h | 48 + include/media/videobuf2-memops.h | 5 + 24 files changed, 2180 insertions(+), 801 deletions(-) rewrite arch/arm/mach-exynos4/dev-sysmmu.c (88%) delete mode 100644 arch/arm/mach-exynos4/include/mach/sysmmu.h rewrite arch/arm/plat-s5p/include/plat/sysmmu.h (83%) rewrite arch/arm/plat-s5p/sysmmu.c (87%) create mode 100644 drivers/media/video/s5p-fimc/fimc-mem.h create mode 100644 drivers/media/video/videobuf2-dma-iommu.c create mode 100644 include/media/videobuf2-dma-iommu.h -- 1.7.1.569.g6f426 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
