From: j.anaszewski@samsung•com (Jacek Anaszewski)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 2/4] s5p-jpeg: add support for 5433
Date: Fri, 18 Sep 2015 16:30:08 +0200 [thread overview]
Message-ID: <55FC1FF0.7080506@samsung.com> (raw)
In-Reply-To: <1442586060-23657-3-git-send-email-andrzej.p@samsung.com>
Hi Andrzej,
On 09/18/2015 04:20 PM, Andrzej Pietrasiewicz wrote:
> JPEG IP found in Exynos5433 is similar to what is in Exynos4, but
> there are some subtle differences which this patch takes into account.
>
> The most important difference is in what is processed by the JPEG IP and
> what has to be provided to it. In case of 5433 the IP does not parse
> Huffman and quantisation tables, so this has to be performed with the CPU
> and the majority of the code in this patch does that.
>
> A small but important difference is in what address is passed to the JPEG
> IP. In case of 5433 it is the SOS (start of scan) position, which is
> natural, because the headers must be parsed elsewhere.
>
> There is also a difference in how the hardware is put to work in
> device_run.
>
> Data structures are extended as appropriate to accommodate the above
> changes.
>
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung•com>
> ---
> .../bindings/media/exynos-jpeg-codec.txt | 3 +-
> drivers/media/platform/s5p-jpeg/jpeg-core.c | 378 +++++++++++++++++++--
> drivers/media/platform/s5p-jpeg/jpeg-core.h | 31 ++
> drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c | 80 ++++-
> drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.h | 11 +-
> drivers/media/platform/s5p-jpeg/jpeg-regs.h | 85 +++--
> 6 files changed, 522 insertions(+), 66 deletions(-)
Reviewed-by: Jacek Anaszewski <j.anaszewski@samsung•com>
--
Best Regards,
Jacek Anaszewski
next prev parent reply other threads:[~2015-09-18 14:30 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-18 14:20 [PATCH 0/4] Exynos 5433 jpeg h/w codec support Andrzej Pietrasiewicz
2015-09-18 14:20 ` [PATCH 1/4] s5p-jpeg: generalize clocks handling Andrzej Pietrasiewicz
2015-09-18 14:29 ` Jacek Anaszewski
2015-09-18 14:20 ` [PATCH 2/4] s5p-jpeg: add support for 5433 Andrzej Pietrasiewicz
2015-09-18 14:30 ` Jacek Anaszewski [this message]
2015-09-18 14:20 ` [PATCH 3/4] MAINTAINERS: add exynos jpeg codec maintainers Andrzej Pietrasiewicz
2015-09-18 14:30 ` Jacek Anaszewski
2015-09-18 14:21 ` [PATCH 4/4] ARM64: dts: exynos5433: add jpeg node Andrzej Pietrasiewicz
2015-09-21 9:50 ` Hans Verkuil
2015-09-21 9:59 ` Andrzej Pietrasiewicz
2015-09-21 11:41 ` Mauro Carvalho Chehab
2015-09-21 12:28 ` Sylwester Nawrocki
2015-09-21 12:55 ` Andrzej Pietrasiewicz
2015-09-28 8:52 ` Krzysztof Kozlowski
2015-09-28 11:54 ` Bartlomiej Zolnierkiewicz
2015-09-28 12:02 ` Krzysztof Kozlowski
2015-09-30 6:35 ` Kukjin Kim
2015-09-30 6:46 ` Chanwoo Choi
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