i2c: qcom-geni: Store DMA mapping data in geni_i2c_dev struct

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Store DMA mapping data in geni_i2c_dev struct to enhance DMA mapping
data scope. For example during shutdown callback to unmap DMA mapping,
this stored DMA mapping data can be used to call geni_se_tx_dma_unprep
and geni_se_rx_dma_unprep functions.

Add two helper functions geni_i2c_rx_msg_cleanup and
geni_i2c_tx_msg_cleanup to unwrap the things after rx/tx FIFO/DMA
transfers, so that the same can be used in geni_i2c_stop_xfer()
function during shutdown callback.

Signed-off-by: Roja Rani Yarubandi <rojay@codeaurora.org>
Reviewed-by: Akash Asthana <akashast@codeaurora.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

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Roja Rani Yarubandi 2020-12-21 18:08:00 +05:30 • committed by Wolfram Sang

parent 5581b4167c

commit 357ee8841d

1 changed files with 43 additions and 16 deletions

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drivers/i2c/busses/i2c-qcom-geni.c

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