linux-kernel - [PATCH v2 0/2] Allow non-coherent video capture buffers on Rockchip ISP V1

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Message-Id: <20250115-b4-rkisp-noncoherent-v2-0-0853e1a24012@gmail.com>
Date: Wed, 15 Jan 2025 20:25:04 +0300
From: Mikhail Rudenko <mike.rudenko@...il.com>
To: Dafna Hirschfeld <dafna@...tmail.com>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Heiko Stuebner <heiko@...ech.de>, Tomasz Figa <tfiga@...omium.org>, 
 Marek Szyprowski <m.szyprowski@...sung.com>, 
 Hans Verkuil <hverkuil@...all.nl>, 
 Sergey Senozhatsky <senozhatsky@...omium.org>
Cc: linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Mauro Carvalho Chehab <mchehab+huawei@...nel.org>, 
 Mikhail Rudenko <mike.rudenko@...il.com>, stable@...r.kernel.org
Subject: [PATCH v2 0/2] Allow non-coherent video capture buffers on
 Rockchip ISP V1

This small series adds support for non-coherent video capture buffers
on Rockchip ISP V1. Patch 1 fixes cache management for dmabuf's
allocated by dma-contig allocator. Patch 2 allows non-coherent
allocations on the rkisp1 capture queue. Some timing measurements are
provided in the commit message of patch 2.

Signed-off-by: Mikhail Rudenko <mike.rudenko@...il.com>
---
Changes in v2:
- Fix vb2_dc_dmabuf_ops_{begin,end}_cpu_access() for non-coherent buffers.
- Add cache management timing information to patch 2 commit message.
- Link to v1: https://lore.kernel.org/r/20250102-b4-rkisp-noncoherent-v1-1-bba164f7132c@gmail.com

---
Mikhail Rudenko (2):
      media: videobuf2: Fix dmabuf cache sync/flush in dma-contig
      media: rkisp1: Allow non-coherent video capture buffers

 drivers/media/common/videobuf2/videobuf2-dma-contig.c   | 14 ++++++++++++++
 drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c |  1 +
 2 files changed, 15 insertions(+)
---
base-commit: 94794b5ce4d90ab134b0b101a02fddf6e74c437d
change-id: 20241231-b4-rkisp-noncoherent-ad6e7c7a68ba

Best regards,
-- 
Mikhail Rudenko <mike.rudenko@...il.com>