A "known issue" during implementation of SE DMA for spi geni driver was
that it does DMA map/unmap internally instead of in spi framework.
Current patches remove this hiccup and also clean up code a bit.
Testing revealed no regressions and results with 1000 iterations of
reading from EC showed no loss of performance.
Results
=======
Before - Iteration 999, min=5.10, max=5.17, avg=5.14, ints=25129
After - Iteration 999, min=5.10, max=5.20, avg=5.15, ints=25153
Vijaya Krishna Nivarthi (2):
soc: qcom: geni-se: Add interfaces geni_se_tx_init_dma() and
geni_se_rx_init_dma()
spi: spi-geni-qcom: Do not do DMA map/unmap inside driver, use
framework instead
---
v1 -> v2:
- Modified interfaces arguments and accordingly calls to them
- Added dma_max_len to driver
drivers/soc/qcom/qcom-geni-se.c | 67 ++++++++++++++++++-------
drivers/spi/spi-geni-qcom.c | 103 +++++++++++++++++++--------------------
include/linux/soc/qcom/geni-se.h | 4 ++
3 files changed, 103 insertions(+), 71 deletions(-)
--
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