kernel/linux.git/drivers/gpu/drm/exynos, branch v4.4.109

drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU

2017-12-16T09:33:49+00:00

commit 120a264f9c2782682027d931d83dcbd22e01da80 upstream. When no IOMMU is available, all GEM buffers allocated by Exynos DRM driver are contiguous, because of the underlying dma_alloc_attrs() function provides only such buffers. In such case it makes no sense to keep BO_NONCONTIG flag for the allocated GEM buffers. This allows to avoid failures for buffer contiguity checks in the subsequent operations on GEM objects. Signed-off-by: Marek Szyprowski Signed-off-by: Inki Dae Signed-off-by: Greg Kroah-Hartman

drm/exynos/decon5433: set STANDALONE_UPDATE_F on output enablement

2017-12-09T17:42:42+00:00

[ Upstream commit 11d8bcef7a0399e1d2519f207fd575fc404306b4 ] DECON_TV requires STANDALONE_UPDATE after output enabling, otherwise it does not start. This change is neutral for DECON. Signed-off-by: Andrzej Hajda Signed-off-by: Inki Dae Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

drm/exynos: fix error handling in exynos_drm_subdrv_open

2016-11-10T15:36:36+00:00

commit 55c4b906aa2aec3fa66310ec03c6842e34a04b2a upstream. gcc-6 warns about a pointless loop in exynos_drm_subdrv_open: drivers/gpu/drm/exynos/exynos_drm_core.c: In function 'exynos_drm_subdrv_open': drivers/gpu/drm/exynos/exynos_drm_core.c:104:199: error: self-comparison always evaluates to false [-Werror=tautological-compare] list_for_each_entry_reverse(subdrv, &subdrv->list, list) { Here, the list_for_each_entry_reverse immediately terminates because the subdrv pointer is compared to itself as the loop end condition. If we were to take the current subdrv pointer as the start of the list (as we would do if list_for_each_entry_reverse() was not a macro), we would iterate backwards over the &exynos_drm_subdrv_list anchor, which would be even worse. Instead, we need to use list_for_each_entry_continue_reverse() to go back over each subdrv that was successfully opened until the first entry. Signed-off-by: Arnd Bergmann Signed-off-by: Inki Dae Signed-off-by: Greg Kroah-Hartman

drm/exynos: atomic check only enabled crtc states

2015-12-19T16:39:10+00:00

Since atomic check is called also for disabled crtcs it should skip mode checking as it can be uninitialized. The patch fixes it. Signed-off-by: Andrzej Hajda Suggested-by: Daniel Vetter Tested-by: Javier Martinez Canillas Signed-off-by: Inki Dae

drm/exynos/gem: remove DMA-mapping hacks used for constructing page array

2015-11-03T02:46:39+00:00

Exynos GEM objects contains an array of pointers to the pages, which the allocated buffer consists of. Till now the code used some hacks (like relying on DMA-mapping internal structures or using ARM-specific dma_to_pfn helper) to build this array. This patch fixes this by adding proper call to dma_get_sgtable_attrs() and using the acquired scatter-list to construct needed array. This approach is more portable (work also for ARM64) and finally fixes the layering violation that was present in this code. Signed-off-by: Marek Szyprowski Signed-off-by: Inki Dae

drm/exynos: simplify Kconfig component names

2015-11-03T02:46:38+00:00

Many Exynos DRM sub-options mentions Exynos DRM in their titles. It is redundant and can be safely shortened. The patch additionally makes some entries more descriptive. Signed-off-by: Andrzej Hajda Signed-off-by: Inki Dae

drm/exynos: re-arrange Kconfig entries

2015-11-03T02:46:38+00:00

Exynos DRM driver have quite big number of components and options. The patch re-arranges them into three logical groups: - CRTCs, - Encoders and Bridges, - Sub-drivers. It should make driver options more clear. Signed-off-by: Andrzej Hajda Signed-off-by: Inki Dae

drm/exynos: abstract out common dependency

2015-11-03T02:46:38+00:00

All options depends on DRM_EXYNOS so it can be moved to enclosing if clause. Signed-off-by: Andrzej Hajda Signed-off-by: Inki Dae

drm/exynos: separate Mixer and HDMI drivers

2015-11-03T02:46:38+00:00

Latest Exynos SoCs does not have Mixer IP, but they still have HDMI IP. Their drivers should be configurable separately. Signed-off-by: Andrzej Hajda Signed-off-by: Inki Dae

drm/exynos/mixer: replace direct cross-driver call with drm mode validation

2015-11-03T02:46:38+00:00

HDMI driver called directly function from MIXER driver to invalidate modes not supported by MIXER. The patch replaces the hack with proper .atomic_check callback. Signed-off-by: Andrzej Hajda Signed-off-by: Inki Dae