i2c: qup: Add bam dma capabilities

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QUP cores can be attached to a BAM module, which acts as
a dma engine for the QUP core. When DMA with BAM is enabled,
the BAM consumer pipe transmitted data is written to the
output FIFO and the BAM producer pipe received data is read
from the input FIFO.

With BAM capabilities, qup-i2c core can transfer more than
256 bytes, without a 'stop' which is not possible otherwise.

Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Reviewed-by: Andy Gross <andy.gross@linaro.org>
Tested-by: Archit Taneja <architt@codeaurora.org>
Tested-by: Telkar Nagender <ntelkar@codeaurora.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

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This commit is contained in:

Sricharan R

2016-02-22 17:38:15 +05:30

committed by Wolfram Sang

parent 9f8f53a617

commit 9cedf3b2f0

1 changed files with 459 additions and 14 deletions

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473

drivers/i2c/busses/i2c-qup.c

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