linux-kernel - [PATCH V2 0/6] i2c: qup: Add support for v2 tags and bam dma

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Date:	Tue,  7 Apr 2015 00:01:01 +0530
From:	Sricharan R <sricharan@...eaurora.org>
To:	devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, dmaengine@...r.kernel.org,
	galak@...eaurora.org, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org, agross@...eaurora.org,
	iivanov@...sol.com
Cc:	srichara@....qualcomm.com
Subject: [PATCH V2 0/6] 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.

This series depends on the below bam dma bug fix
 https://lkml.org/lkml/2015/2/20/47

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

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

Andy Gross (1):
  i2c: qup: Add V2 tags support

Sricharan R (5):
  i2c: qup: Change qup_wait_writeready function to use for all timeouts
  i2c: qup: Add bam dma capabilities
  i2c: qup: Transfer every i2c_msg in i2c_msgs without stop
  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        | 788 +++++++++++++++++++++++++++++++++---
 2 files changed, 748 insertions(+), 54 deletions(-)

-- 
1.8.2.1

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