linux-kernel - [PATCH 00/11] dmaengine: add context parameter to prep_slave_sg and prep_dma

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Date:	Thu,  2 Feb 2012 16:32:10 -0500
From:	Alexandre Bounine <alexandre.bounine@....com>
To:	vinod.koul@...el.com, dan.j.williams@...el.com,
	linux-kernel@...r.kernel.org
Cc:	Alexandre Bounine <alexandre.bounine@....com>,
	akpm@...ux-foundation.org, jaswinder.singh@...aro.org
Subject: [PATCH 00/11] dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic

As we agreed during our discussion about adding DMA Engine support for RapidIO
subsystem [1], RapidIO and similar clients may benefit from adding an extra
context parameter to device_prep_slave_sg() and device_prep_dma_cyclic() interfaces.

Adding the context parameter will allow to pass client/target specific
information associated with an individual data transfer request.

In the case of RapidIO support this additional information consists of target
destination ID and its buffer address (which is not mapped into the local CPU
memory space). Because a single RapidIO-capable DMA channel may queue data
transfer requests to different target devices, the per-request configuration
is required.

This set of patches presents changes to DMA_SLAVE and DMA_CYCLIC interfaces [2]
and corresponding changes to all affected current drivers/clients.

DMA Engine support for RapidIO and device-specific driver for Tsi721 PCIe-to-SRIO
bridge will follow as a separate set of patches.

[1] https://lkml.org/lkml/2011/10/24/275
[2] https://lkml.org/lkml/2012/1/30/624


Alexandre Bounine (11):
  dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic
  dmaengine/drivers: add context parameter for DMA_SLAVE and DMA_CYCLIC
  plat-samsung: add context parameter for DMA_SLAVE and DMA_CYCLIC
  media/video: add new context parameter for DMA_SLAVE calls
  mmc/host: add context parameter for DMA_SLAVE and DMA_CYCLIC
  nand/gpmi: add context parameter to prep_slave_sg calls
  net/ks8842: add context parameter to prep_slave_sg call
  spi/serial: add context parameter for DMA_SLAVE and DMA_CYCLIC
  usb/musb: add context parameter to prep_slave_sg call
  usb/renesas: add context parameter to prep_slave_sg call
  sound/soc: add context parameter to prep_slave_sg and prep_dma_cyclic
    calls

 arch/arm/plat-nomadik/include/plat/ste_dma40.h |    2 +-
 arch/arm/plat-samsung/dma-ops.c                |    5 ++-
 drivers/dma/amba-pl08x.c                       |    2 +-
 drivers/dma/at_hdmac.c                         |    7 ++++-
 drivers/dma/coh901318.c                        |    2 +-
 drivers/dma/dw_dmac.c                          |    2 +-
 drivers/dma/ep93xx_dma.c                       |    6 +++-
 drivers/dma/fsldma.c                           |    4 ++-
 drivers/dma/imx-dma.c                          |    5 ++-
 drivers/dma/imx-sdma.c                         |    5 ++-
 drivers/dma/intel_mid_dma.c                    |    3 +-
 drivers/dma/ipu/ipu_idmac.c                    |    3 +-
 drivers/dma/mxs-dma.c                          |    5 ++-
 drivers/dma/pch_dma.c                          |    3 +-
 drivers/dma/pl330.c                            |    5 ++-
 drivers/dma/shdma.c                            |    3 +-
 drivers/dma/sirf-dma.c                         |    2 +-
 drivers/dma/ste_dma40.c                        |    5 ++-
 drivers/dma/timb_dma.c                         |    3 +-
 drivers/dma/txx9dmac.c                         |    2 +-
 drivers/media/video/mx3_camera.c               |    2 +-
 drivers/media/video/timblogiw.c                |    2 +-
 drivers/mmc/host/atmel-mci.c                   |    2 +-
 drivers/mmc/host/mmci.c                        |    2 +-
 drivers/mmc/host/mxcmmc.c                      |    2 +-
 drivers/mmc/host/mxs-mmc.c                     |    2 +-
 drivers/mmc/host/sh_mmcif.c                    |    6 +++-
 drivers/mmc/host/tmio_mmc_dma.c                |    4 +-
 drivers/mtd/nand/gpmi-nand/gpmi-lib.c          |   25 ++++++++++++++---------
 drivers/net/ethernet/micrel/ks8842.c           |    4 +-
 drivers/spi/spi-dw-mid.c                       |    6 +++-
 drivers/spi/spi-ep93xx.c                       |    3 +-
 drivers/spi/spi-pl022.c                        |    6 +++-
 drivers/spi/spi-topcliff-pch.c                 |    6 +++-
 drivers/tty/serial/amba-pl011.c                |    6 +++-
 drivers/tty/serial/pch_uart.c                  |    5 ++-
 drivers/tty/serial/sh-sci.c                    |    4 +-
 drivers/usb/musb/ux500_dma.c                   |    3 +-
 drivers/usb/renesas_usbhs/fifo.c               |    3 +-
 drivers/video/mx3fb.c                          |    6 +++-
 include/linux/dmaengine.h                      |   10 +++++---
 sound/soc/ep93xx/ep93xx-pcm.c                  |    2 +-
 sound/soc/imx/imx-pcm-dma-mx2.c                |    2 +-
 sound/soc/mxs/mxs-pcm.c                        |    2 +-
 sound/soc/sh/siu_pcm.c                         |    6 +++-
 sound/soc/txx9/txx9aclc.c                      |    2 +-
 46 files changed, 120 insertions(+), 77 deletions(-)

-- 
1.7.8.4

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