[PATCH V3 0/6] i2c: qup: Add support for v2 tags and bam dma
From: Sricharan R
Date: Sat Apr 11 2015 - 03:09:23 EST
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
Tested this series on apq8074 dragon board eeprom client on i2c bus1
[V3] Added support to coalesce each i2c_msg in i2c_msgs for fifo and
block mode in Patch 2. Also addressed further code comments.
[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 | 877 +++++++++++++++++++++++++++++++++---
2 files changed, 822 insertions(+), 69 deletions(-)
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