kernel/linux.git/drivers/gpu/drm/exynos, branch v5.10.7

drm/exynos: depend on COMMON_CLK to fix compile tests

2020-11-23T01:01:32+00:00

The Exynos DRM uses Common Clock Framework thus it cannot be built on platforms without it (e.g. compile test on MIPS with RALINK and SOC_RT305X): /usr/bin/mips-linux-gnu-ld: drivers/gpu/drm/exynos/exynos_mixer.o: in function `mixer_bind': exynos_mixer.c:(.text+0x958): undefined reference to `clk_set_parent' Reported-by: kernel test robot Signed-off-by: Krzysztof Kozlowski Signed-off-by: Inki Dae

Merge tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping

2020-10-15T21:43:29+00:00

Pull dma-mapping updates from Christoph Hellwig: - rework the non-coherent DMA allocator - move private definitions out of - lower CMA_ALIGNMENT (Paul Cercueil) - remove the omap1 dma address translation in favor of the common code - make dma-direct aware of multiple dma offset ranges (Jim Quinlan) - support per-node DMA CMA areas (Barry Song) - increase the default seg boundary limit (Nicolin Chen) - misc fixes (Robin Murphy, Thomas Tai, Xu Wang) - various cleanups * tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping: (63 commits) ARM/ixp4xx: add a missing include of dma-map-ops.h dma-direct: simplify the DMA_ATTR_NO_KERNEL_MAPPING handling dma-direct: factor out a dma_direct_alloc_from_pool helper dma-direct check for highmem pages in dma_direct_alloc_pages dma-mapping: merge into dma-mapping: move large parts of to kernel/dma dma-mapping: move dma-debug.h to kernel/dma/ dma-mapping: remove dma-mapping: merge into dma-contiguous: remove dma_contiguous_set_default dma-contiguous: remove dev_set_cma_area dma-contiguous: remove dma_declare_contiguous dma-mapping: split cma: decrease CMA_ALIGNMENT lower limit to 2 firewire-ohci: use dma_alloc_pages dma-iommu: implement ->alloc_noncoherent dma-mapping: add new {alloc,free}_noncoherent dma_map_ops methods dma-mapping: add a new dma_alloc_pages API dma-mapping: remove dma_cache_sync 53c700: convert to dma_alloc_noncoherent ...

dma-mapping: split

2020-10-06T05:07:03+00:00

Split out all the bits that are purely for dma_map_ops implementations and related code into a new header so that they don't get pulled into all the drivers. That also means the architecture specific is not pulled in by any more, which leads to a missing includes that were pulled in by the x86 or arm versions in a few not overly portable drivers. Signed-off-by: Christoph Hellwig

drm/exynos: stop setting DMA_ATTR_NON_CONSISTENT

2020-09-25T04:20:41+00:00

DMA_ATTR_NON_CONSISTENT is a no-op except on PA-RISC and a few MIPS configs, so don't set it in this ARM specific driver. Signed-off-by: Christoph Hellwig

drm/exynos: Fix dma_parms allocation

2020-09-22T04:49:09+00:00

Since commit 9495b7e92f71 ("driver core: platform: Initialize dma_parms for platform devices") driver core handles allocation of the dma_parms structure for platform device, so there is no need to manually allocate nor free it. Reported-by: Tomi Valkeinen Signed-off-by: Marek Szyprowski Signed-off-by: Inki Dae

drm/exynos: hdmi: Simplify with dev_err_probe()

2020-09-21T01:58:48+00:00

Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and also it prints the error value. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Andrzej Hajda Signed-off-by: Inki Dae

drm/exynos: dsi: Simplify with dev_err_probe()

2020-09-21T01:58:48+00:00

Merge branch 'for-5.10-drm-sg-fix' of https://github.com/mszyprow/linux into drm-next

2020-09-17T06:07:11+00:00

Please pull a set of fixes for various DRM drivers that finally resolve incorrect usage of the scatterlists (struct sg_table nents and orig_nents entries), what causes issues when IOMMU is used. Signed-off-by: Dave Airlie From: Marek Szyprowski Link: https://patchwork.freedesktop.org/patch/msgid/20200910080505.24456-1-m.szyprowski@samsung.com

drm: exynos: fix common struct sg_table related issues

2020-09-10T06:18:35+00:00

The Documentation/DMA-API-HOWTO.txt states that the dma_map_sg() function returns the number of the created entries in the DMA address space. However the subsequent calls to the dma_sync_sg_for_{device,cpu}() and dma_unmap_sg must be called with the original number of the entries passed to the dma_map_sg(). struct sg_table is a common structure used for describing a non-contiguous memory buffer, used commonly in the DRM and graphics subsystems. It consists of a scatterlist with memory pages and DMA addresses (sgl entry), as well as the number of scatterlist entries: CPU pages (orig_nents entry) and DMA mapped pages (nents entry). It turned out that it was a common mistake to misuse nents and orig_nents entries, calling DMA-mapping functions with a wrong number of entries or ignoring the number of mapped entries returned by the dma_map_sg() function. To avoid such issues, lets use a common dma-mapping wrappers operating directly on the struct sg_table objects and use scatterlist page iterators where possible. This, almost always, hides references to the nents and orig_nents entries, making the code robust, easier to follow and copy/paste safe. Signed-off-by: Marek Szyprowski Reviewed-by: Andrzej Hajda Acked-by : Inki Dae

drm: exynos: use common helper for a scatterlist contiguity check

2020-09-10T06:18:35+00:00

Use common helper for checking the contiguity of the imported dma-buf. Signed-off-by: Marek Szyprowski Reviewed-by: Andrzej Hajda Acked-by : Inki Dae