linux-kernel - [PATCH v2 0/5] axi-dmac: Add support for scatter-gather

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Message-ID: <20231215131313.23840-1-paul@crapouillou.net>
Date: Fri, 15 Dec 2023 14:13:08 +0100
From: Paul Cercueil <paul@...pouillou.net>
To: Vinod Koul <vkoul@...nel.org>
Cc: Lars-Peter Clausen <lars@...afoo.de>,
	Nuno Sá <noname.nuno@...il.com>,
	Michael Hennerich <Michael.Hennerich@...log.com>,
	dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH v2 0/5] axi-dmac: Add support for scatter-gather

Hi Vinod,

V2 of my patchset which introduces scatter-gather transfers support to
the axi-dmac driver.

I updated patch [1/5] with your feedback. Patch [4/5] was updated as
well, so that cyclic transfers are restarted properly in the EOT. This
was a bug in my V1, but it was fixed here just for bisectability, as the
new patch [5/5] will improve cyclic transfers by linking the last
descriptor to the first one in a SG chain, which means that the EOT IRQ
only needs to call the callback associated with the cyclic transfer, and
the EOT IRQ can be masked if there is no callback associated with it.

Cheers,
-Paul

 drivers/dma/dma-axi-dmac.c | 280 +++++++++++++++++++++++++------------
 1 file changed, 191 insertions(+), 89 deletions(-)

-- 
2.42.0