RE: [PATCH V7 0/6] i2c: qup: Add support for v2 tags and bam dma

Sricharan
2016-01-19T10:14:18Z

Hi wolfram,

> -----Original Message-----
> From: linux-arm-kernel [mailto:linux-arm-kernel-
> bounces@lists.infradead.org] On Behalf Of Sricharan R
> Sent: Tuesday, January 19, 2016 3:33 PM
> To: wsa@the-dreams.de
> Cc: devicetree@vger.kernel.org; architt@codeaurora.org; linux-arm-
> msm@vger.kernel.org; ntelkar@codeaurora.org; galak@codeaurora.org;
> linux-kernel@vger.kernel.org; andy.gross@linaro.org; linux-
> i2c@vger.kernel.org; iivanov@mm-sol.com; agross@codeaurora.org;
> dmaengine@vger.kernel.org; sricharan@codeaurora.org; linux-arm-
> kernel@lists.infradead.org
> Subject: [PATCH V7 0/6] i2c: qup: Add support for v2 tags and bam dma
>
> 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 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
>
> [V7] Added tested-by tags and fixed a small comment
>
> [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
>
> 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
>
Wolfram, Does the first 4 patches looks good to be picked up ?

Regards,
Sricharan