linux-kernel - [PATCH v4 00/15] ARM: shmobile: move DMAC configuration data in the driver

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Date:	Tue, 23 Jul 2013 12:49:54 +0200
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	linux-kernel@...r.kernel.org
Cc:	Magnus Damm <magnus.damm@...il.com>,
	Simon Horman <horms@...ge.net.au>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Vinod Koul <vinod.koul@...el.com>, linux-sh@...r.kernel.org,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Guennadi Liakhovetski <g.liakhovetski+renesas@...il.com>
Subject: [PATCH v4 00/15] ARM: shmobile: move DMAC configuration data in the driver

An updated version of an shdma driver platform driver conversion and Device
Tree support. No functional changes since v2/v3, just made some structs
const, updated documentation, removed an unused generic DT match entry,
adjusted file order in the Makefile.

Patch 9 "DMA: shdma: support referencing specific DMACs within a
multiplexer in DT" is actually an RFC. It proposes a method to support
referencing a specific DMAC ninstance within a multiplexer DT node from
slave DT nodes. As described in the documentation, the idea is to add a
"#dma-cells" property to DMAC instances, that has to be made available
for such targeted channel allocation. AFAICS, this is the only way to
support both muxed and targeted referencing without core code
modifications.

Cc: Guennadi Liakhovetski <g.liakhovetski+renesas@...il.com>

Guennadi Liakhovetski (15):
  DMA: shdma: add support for DMAC configuration data, supplied via
    device ID
  DMA: shdma: add r8a7740 DMAC data to the device ID table
  DMA: shdma: add r8a73a4 DMAC data to the device ID table
  DMA: shdma: make a pointer const
  DMA: shdma: pass SoC-specific configuration to the driver via OF
    matching
  DMA: shdma: make multiplexer platform data optional
  DMA: shdma: add sh73a0 DMAC data to the device ID table
  DMA: shdma: move two macros to a header
  DMA: shdma: support referencing specific DMACs within a multiplexer
    in DT
  ARM: shmobile: r8a73a4: add a DMAC platform device and clock for it
  ARM: shmobile: r8a7740: switch DMAC controllers to using device ID
    data
  ARM: shmobile: r8a7740: add DT nodes and clock aliases for three DMAC
    instances
  ARM: shmobile: r8a73a4: add a DT node and a clock alias for the DMAC
  ARM: shmobile: sh73a0: switch DMAC controllers to using device ID
    data
  ARM: shmobile: r8a7740: add support for 2 RTDMACs

 Documentation/devicetree/bindings/dma/shdma.txt |   23 +++-
 arch/arm/boot/dts/r8a73a4.dtsi                  |   43 ++++++
 arch/arm/boot/dts/r8a7740.dtsi                  |   95 ++++++++++++
 arch/arm/mach-shmobile/clock-r8a73a4.c          |    5 +-
 arch/arm/mach-shmobile/clock-r8a7740.c          |   17 ++-
 arch/arm/mach-shmobile/clock-sh73a0.c           |    2 +-
 arch/arm/mach-shmobile/include/mach/r8a73a4.h   |    9 +
 arch/arm/mach-shmobile/setup-r8a73a4.c          |   17 ++
 arch/arm/mach-shmobile/setup-r8a7740.c          |  178 +++++++++-------------
 arch/arm/mach-shmobile/setup-sh73a0.c           |  182 +----------------------
 drivers/dma/sh/Kconfig                          |   12 ++
 drivers/dma/sh/Makefile                         |    5 +
 drivers/dma/sh/shdma-base.c                     |    3 -
 drivers/dma/sh/shdma-of.c                       |    5 -
 drivers/dma/sh/shdma-r8a73a4.c                  |   75 +++++++++
 drivers/dma/sh/shdma-r8a7740.c                  |   95 ++++++++++++
 drivers/dma/sh/shdma-sh73a0.c                   |  181 ++++++++++++++++++++++
 drivers/dma/sh/shdma.h                          |   30 ++++-
 drivers/dma/sh/{shdma.c => shdmac.c}            |  104 ++++++++++++-
 include/linux/shdma-base.h                      |    3 +
 20 files changed, 775 insertions(+), 309 deletions(-)
 create mode 100644 drivers/dma/sh/shdma-r8a73a4.c
 create mode 100644 drivers/dma/sh/shdma-r8a7740.c
 create mode 100644 drivers/dma/sh/shdma-sh73a0.c
 rename drivers/dma/sh/{shdma.c => shdmac.c} (89%)

-- 
1.7.2.5

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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