linux-kernel - [PATCH v3 0/5] Add and enable GPI DMA users

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Date:   Fri, 25 Jun 2021 10:52:08 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mark Brown <broonie@...nel.org>, Wolfram Sang <wsa@...nel.org>
Cc:     Vinod Koul <vkoul@...nel.org>, Andy Gross <agross@...nel.org>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Douglas Anderson <dianders@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        linux-spi@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 0/5] Add and enable GPI DMA users

Hello,

This series adds the GPI DMA in qcom geni spi and i2c drivers.

For this we first need to move GENI_IF_DISABLE_RO to common
headers and then add support for gpi dma in geni drivers.

Also, to reuse the dma-mapping in spi, we add a new field dma_map_dev to
allow controllers to pass a specific device for dma-mapping

Then, we add spi and i2c geni driver changes to support this DMA.

Changes since v2:
- Add core spi patch for dma_map_dev addition
- rework the logic for getting and releasing channels in both driver, also
  ensure proper cleanup
- Fix the comments recieved from Doug and Bjorn
- Add kernel-doc changes for enum geni_se_xfer_mode

Changes since v1:
 - add r-b from Bjorn on patch 1
 - add more details in log for patch 2
 - Fix the comments from Doug and Bjorn for patch3, notable use read, modify
   update for irq registers, use geni_se_irq_clear() for irq, dont update
   single bit registers, add a bit more description for gpi dma etc

Vinod Koul (5):
  soc: qcom: geni: move GENI_IF_DISABLE_RO to common header
  soc: qcom: geni: Add support for gpi dma
  spi: core: add dma_map_dev for dma device
  spi: spi-geni-qcom: Add support for GPI dma
  i2c: qcom-geni: Add support for GPI DMA

 drivers/i2c/busses/i2c-qcom-geni.c | 309 ++++++++++++++++++++++++++-
 drivers/soc/qcom/qcom-geni-se.c    |  30 ++-
 drivers/spi/spi-geni-qcom.c        | 329 +++++++++++++++++++++++++++--
 drivers/spi/spi.c                  |   4 +
 include/linux/qcom-geni-se.h       |  19 +-
 include/linux/spi/spi.h            |   1 +
 6 files changed, 667 insertions(+), 25 deletions(-)

-- 
2.31.1