On 06/03/2016 08:57 AM, Krzysztof Kozlowski wrote:
> On 06/02/2016 07:25 PM, Javier Martinez Canillas wrote:
>> On 06/02/2016 12:31 PM, Krzysztof Kozlowski wrote:
>>> On 06/02/2016 05:20 PM, Javier Martinez Canillas wrote:
>>>> On 05/30/2016 03:28 AM, Krzysztof Kozlowski wrote:
>>>>> On 05/24/2016 03:31 PM, Marek Szyprowski wrote:
>>>>>> Once MFC driver has been converted to generic reserved memory bindings,
>>>>>> there is no need for custom memory reservation code.
>>>>>>
>>>>>> Signed-off-by: Marek Szyprowski <[email protected]>
>>>>>> ---
>>>>>> 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 | 93 -----------------------------
>>>>>> 4 files changed, 130 deletions(-)
>>>>>> delete mode 100644 arch/arm/mach-exynos/mfc.h
>>>>>> delete mode 100644 arch/arm/mach-exynos/s5p-dev-mfc.c
>>>>>
>>>>> Thanks, applied.
>>>>
>>>> This patch can't be applied before patches 2/5 and 3/5, or the custom
>>>> memory regions reservation will break with the current s5p-mfc driver.
>>>
>>> Yes, I know. As I understood from talk with Marek, the driver is broken
>>> now so continuous work was not chosen. If it is not correct and full
>>
>> It's true that the driven is currently broken in mainline and is not really
>> stable, I posted fixes for all the issues I found (mostly in module removal
>> and insert paths).
>>
>> But with just the following patch from Ayaka on top of mainline, I'm able to
>> have video decoding working: https://lkml.org/lkml/2016/5/6/577
>
> Which is still a "future" patch, not current state...
>>
>> Marek mentioned that bisectability is only partially broken because the old
>> binding will still work after this series if IOMMU is enabled (because the
>> properties are ignored in this case). But will break if IOMMU isn't enabled
>> which will be the case for some boards that fails to boot with IOMMU due the
>> bootloader leaving the FIMD enabled doing DMA operations automatically
>> AFAIU.
>>
>> Now, I'm OK with not keeping backwards compatibility for the MFC dt bindings
>> since arguably the driver has been broken for a long time and nobody cared
>> and also I don't think anyone in practice boots a new kernel with an old DTB
>> for Exynos.
>>
>> But I don't think is correct to introduce a new issue as is the case if this
>> patch is applied before the previous patches in the series since this causes
>> the driver to probe to fail and the following warn on boot (while it used to
>> at least probe correctly in mainline):
>
> Okay but the patches will go through separate tree. This is not a
> problem, as I said, I just need a stable tag from media tree with first
> four patches (Mauro?).
I have prepared a topic branch including media patches from this patch
series and the dependency fix patches from Javier and Marek.
So this could be used as a topic branch to pull into media master branch
and a dependency topic branch for Krzysztof's samsung-soc tree.
Mauro, can we do it this way? I already talked to Kamil about this.
---8<----
The following changes since commit 1a695a905c18548062509178b98bc91e67510864:
Linux 4.7-rc1 (2016-05-29 09:29:24 -0700)
are available in the git repository at:
git://linuxtv.org/snawrocki/samsung.git for-v4.8/media/exynos-mfc
for you to fetch changes up to 04f776734c4e03e33111d3d5a994b589870df623:
media: s5p-mfc: add iommu support (2016-06-03 11:13:45 +0200)
----------------------------------------------------------------
Javier Martinez Canillas (3):
s5p-mfc: Set device name for reserved memory region devs
s5p-mfc: Add release callback for memory region devs
s5p-mfc: Fix race between s5p_mfc_probe() and s5p_mfc_open()
Marek Szyprowski (6):
media: vb2-dma-contig: add helper for setting dma max seg size
media: set proper max seg size for devices on Exynos SoCs
of: reserved_mem: add support for using more than one region for given
device
media: s5p-mfc: use generic reserved memory bindings
media: s5p-mfc: replace custom reserved memory handling code with generic
one
media: s5p-mfc: add iommu support
Documentation/devicetree/bindings/media/s5p-mfc.txt | 39 ++++-
drivers/media/platform/exynos-gsc/gsc-core.c | 2 +
drivers/media/platform/exynos4-is/fimc-core.c | 2 +
drivers/media/platform/exynos4-is/fimc-is.c | 2 +
drivers/media/platform/exynos4-is/fimc-lite.c | 2 +
drivers/media/platform/s5p-g2d/g2d.c | 2 +
drivers/media/platform/s5p-jpeg/jpeg-core.c | 2 +
drivers/media/platform/s5p-mfc/s5p_mfc.c | 198
++++++++++++++-----------
drivers/media/platform/s5p-mfc/s5p_mfc_iommu.h | 79 ++++++++++
drivers/media/platform/s5p-tv/mixer_video.c | 2 +
drivers/media/v4l2-core/videobuf2-dma-contig.c | 53 +++++++
drivers/of/of_reserved_mem.c | 85 ++++++++---
include/linux/of_reserved_mem.h | 25 +++-
include/media/videobuf2-dma-contig.h | 2 +
14 files changed, 379 insertions(+), 116 deletions(-)
create mode 100644 drivers/media/platform/s5p-mfc/s5p_mfc_iommu.h
---8<----
--
Regards,
Sylwester
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