linux-kernel - [PATCH 0/5] spi: uniphier: Introduce DMA transfer mode

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Message-Id: <1577149107-30670-1-git-send-email-hayashi.kunihiko@socionext.com>
Date:   Tue, 24 Dec 2019 09:58:22 +0900
From:   Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
To:     Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Keiji Hayashibara <hayashibara.keiji@...ionext.com>,
        Masami Hiramatsu <masami.hiramatsu@...aro.org>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
Subject: [PATCH 0/5] spi: uniphier: Introduce DMA transfer mode

This series introduces DMA transfer mode into UniPhier SPI driver.
This only supports UniPhier XDMAC implemented in the SoC.

The DMA transfer mode uses FIFO threshold as a trigger to start DMA transfer,
however, the FIFO is limited to one word width due to alignment restiction
of the DMA controller.

Kunihiko Hayashi (5):
  spi: uniphier: Fix FIFO threshold
  spi: uniphier: Change argument of irq functions to private structure
  spi: uniphier: Add handle_err callback function
  spi: uniphier: Add SPI_LOOP to the capabilities
  spi: uniphier: Add DMA transfer mode support

 drivers/spi/spi-uniphier.c | 261 +++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 241 insertions(+), 20 deletions(-)

-- 
2.7.4