Marek Szyprowski 8ded59413c drm/exynos: ipp: Remove Exynos DRM IPP subsystem ... Exynos DRM IPP subsystem is in fact non-functional and frankly speaking dead-code. This patch clearly marks that Exynos DRM IPP subsystem is broken and never really functional. It will be replaced by a completely rewritten API. Exynos DRM IPP user-space API can be obsoleted for the following reasons: 1. Exynos DRM IPP user-space API can be optional in Exynos DRM, so userspace should not rely that it is always available and should have a software fallback in case it is not there. 2. The only mode which was initially semi-working was memory-to-memory image processing. The remaining modes (LCD-"writeback" and "output") were never operational due to missing code (both in mainline and even vendor kernels). 3. Exynos DRM IPP mainline user-space API compatibility for memory-to-memory got broken very early by commit 083500baef ("drm: remove DRM_FORMAT_NV12MT", which removed the support for tiled formats, the main feature which made this API somehow useful on Exynos platforms (video codec that time produced only tiled frames, to implement xvideo or any other video overlay, one has to de-tile them for proper display). 4. Broken drivers. Especially once support for IOMMU has been added, it revealed that drivers don't configure DMA operations properly and in many cases operate outside the provided buffers trashing memory around. 5. Need for external patches. Although IPP user-space API has been used in some vendor kernels, but in such cases there were additional patches applied (like reverting mentioned 083500baef patch) what means that those userspace apps which might use it, still won't work with the mainline kernel version. We don't have time machines, so we cannot change it, but Exynos DRM IPP extension should never have been merged to mainline in that form. Exynos IPP subsystem and user-space API will be rewritten, so remove current IPP core code and mark existing drivers as BROKEN. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Daniel Stone <daniels@collabora.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>		2018-01-02 08:41:22 +09:00
..
acpi	Merge branch 'acpi-ec' into acpi	2017-11-30 13:37:29 +01:00
asm-generic	mm: switch to 'define pmd_write' instead of __HAVE_ARCH_PMD_WRITE	2017-11-29 18:40:42 -08:00
clocksource	arm64 updates for 4.15	2017-11-15 10:56:56 -08:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2017-12-11 16:32:45 -08:00
drm	- Allow internal page allocation to fail (Chris)	2017-12-28 05:20:31 +10:00
dt-bindings	fixes/cleanups for rc1, non-desktop flags for VR	2017-11-23 21:04:56 -10:00
keys	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
kvm	KVM: arm/arm64: Don't enable/disable physical timer access on VHE	2017-11-29 16:46:09 +01:00
linux	Linux 4.15-rc4	2017-12-19 21:37:24 +10:00
math-emu
media	media updates for v4.15-rc1	2017-11-15 20:30:12 -08:00
memory
misc
net	net: sched: Add TCA_HW_OFFLOAD	2017-12-15 13:35:36 -05:00
pcmcia
ras	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
rdma	Updates for 4.15 kernel merge window	2017-11-15 14:54:53 -08:00
scsi	scsi: libsas: align sata_device's rps_resp on a cacheline	2017-11-21 23:06:32 -05:00
soc	We have two changes to the core framework this time around. The first being a	2017-11-17 20:04:24 -08:00
sound	ALSA: hda - Fix yet remaining issue with vmaster 0dB initialization	2017-11-22 12:34:56 +01:00
target	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2017-11-24 19:19:20 -10:00
trace	Various fix ups.	2017-12-14 18:21:33 -08:00
uapi	drm/exynos: ipp: Remove Exynos DRM IPP subsystem	2018-01-02 08:41:22 +09:00
video	drm/exynos/decon: Move headers from global to local place	2018-01-02 08:38:00 +09:00
xen	xen: features and fixes for v4.15-rc1	2017-11-16 13:06:27 -08:00