Re: [PATCH V6 0/6] i2c: qup: Add support for v2 tags and bam dma

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





On 01/12/2016 02:13 PM, Sricharan R wrote:
i2c: qup: Add support for v2 tags and bam dma

QUP from version 2.1.1 onwards, supports a new format of i2c command tags.
Tag codes instructs the controller to perform a operation like read/write.
This new tagging version supports and is required for adding bam dma
capabilities. V2 tags supports transfer of more than 256 bytes in a single i2c
transaction. Also adding bam dma support facilitates transferring each i2c_msg
in i2c_msgs without a 'stop' bit in between which is required for some of
the clients.

Tested this series on apq8074 dragon board eeprom client on i2c bus1

[V6] Added review tags and fixed a checkpatch warning in patch 4/6.

[V5] Addressed few more comments from Ivan T. Ivanov.
      Squashed patch 2 and 3 as no point in having only few lines of
      common code between v1 and v2 tags for increased complexity.
      Couple of non functional review comments fixes in patch 3, 4.
      Added a change in patch 4 to have proper transfer completion in
      a corner case. patch 5, 6 unchanged.

[V4] Added a patch to factor out some common code.
      Removed support for freq > 400KHZ as per comments.
      Addressed comments from Ivan T. Ivanov to keep the code for
      V2 support in a separate path.
      Changed the authorship of V2 tags support patch.

[V3] Added support to coalesce each i2c_msg in i2c_msgs for fifo and
      block mode in Patch 2. Also addressed further code comments.

      http://comments.gmane.org/gmane.linux.drivers.i2c/22497

[V2] Addressed comments from Ivan T. Ivanov, Andy Gross [v1] Initial Version

For the series:

Tested-by: Archit Taneja <architt@xxxxxxxxxxxxxx>


Sricharan R (6):
   i2c: qup: Change qup_wait_writeready function to use for all timeouts
   i2c: qup: Add V2 tags support
   i2c: qup: Transfer each i2c_msg in i2c_msgs without a stop bit
   i2c: qup: Add bam dma capabilities
   dts: msm8974: Add blsp2_bam dma node
   dts: msm8974: Add dma channels for blsp2_i2c1 node

  arch/arm/boot/dts/qcom-msm8974.dtsi |  14 +-
  drivers/i2c/busses/i2c-qup.c        | 922 ++++++++++++++++++++++++++++++++++--
  2 files changed, 887 insertions(+), 49 deletions(-)


--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation
--
To unsubscribe from this list: send the line "unsubscribe dmaengine" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux PCI]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux