[PATCH v7 0/3] Add RZ/G2L DMAC support

From: Biju Das <biju.das.jz@bp.renesas.com>
To: Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>
Cc: Biju Das <biju.das.jz@bp.renesas.com>,
	Chris Brandt <chris.brandt@renesas.com>,
	dmaengine@vger.kernel.org, devicetree@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Chris Paterson <Chris.Paterson2@renesas.com>,
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>,
	linux-renesas-soc@vger.kernel.org
Subject: [PATCH v7 0/3] Add RZ/G2L DMAC support
Date: Fri,  6 Aug 2021 10:53:19 +0100	[thread overview]
Message-ID: <20210806095322.2326-1-biju.das.jz@bp.renesas.com> (raw)

This patch series aims to add DMAC support on RZ/G2L SoC's.

It is based on the work done by Chris Brandt for RZ/A DMA driver.

v6->v7:
 * As per the DMA documention vc.lock must be held by caller for
   vchan_cookie_complete. So added vc.lock for this function.
 * Added lock for the lists used in rz_dmac_terminate_all.

v5->v6:
 * Added Rb tag from Rob for binding patch
 * Fixed dma_addr_t and size_t format specifier issue reported by
   kernel test robot
 * Started using ARRAY_SIZE macro instead of  magic number in
   rz_dmac_ds_to_val_mapping function.

v4->v5:
 * Passing legacy slave channel configuration parameters using dmaengine_slave_config is prohibited.
   So started passing this parameters in DT instead, by encoding MID/RID values with channel parameters
   in the #dma-cells.
 * Removed Rb tag's of Geert and Rob since there is a modification in binding patch
 * Added 128 byte slave bus width support
 * Removed SoC dtsi and Defconfig patch from this series. Will send as separate patch.

Ref:-
  https://lore.kernel.org/linux-renesas-soc/20210719092535.4474-1-biju.das.jz@bp.renesas.com/T/#ma0b261df6d4400882204aaaaa014ddb59c479db4

v3->v4:
 * Added Rob's Rb tag for binding patch.
 * Incorporated Vinod and Geert's review comments.
v2->v3:
  * Described clocks and resets in binding file as per Rob's feedback.

v1->v2
 * Started using virtual DMAC
 * Added Geert's Rb tag for binding patch.

Biju Das (3):
  dt-bindings: dma: Document RZ/G2L bindings
  dmaengine: Extend the dma_slave_width for 128 bytes
  drivers: dma: sh: Add DMAC driver for RZ/G2L SoC

 .../bindings/dma/renesas,rz-dmac.yaml         | 130 +++
 drivers/dma/sh/Kconfig                        |   9 +
 drivers/dma/sh/Makefile                       |   1 +
 drivers/dma/sh/rz-dmac.c                      | 971 ++++++++++++++++++
 include/linux/dmaengine.h                     |   3 +-
 5 files changed, 1113 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/dma/renesas,rz-dmac.yaml
 create mode 100644 drivers/dma/sh/rz-dmac.c

-- 
2.17.1