From: Vijaya Krishna Nivarthi <quic_vnivarth@quicinc.com>
To: agross@kernel.org, andersson@kernel.org,
konrad.dybcio@linaro.org, broonie@kernel.org,
quic_vnivarth@quicinc.com, dianders@chromium.org,
linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: quic_msavaliy@quicinc.com, mka@chromium.org, swboyd@chromium.org,
quic_vtanuku@quicinc.com, quic_ptalari@quicinc.com
Subject: [PATCH v2 0/2] spi-geni-qcom: Add new interfaces and utilise them to do map/unmap in framework for SE DMA
Date: Wed, 17 May 2023 17:48:12 +0530 [thread overview]
Message-ID: <1684325894-30252-1-git-send-email-quic_vnivarth@quicinc.com> (raw)
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(-)
--
Qualcomm INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by the Linux Foundation.
next reply other threads:[~2023-05-17 12:18 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-17 12:18 Vijaya Krishna Nivarthi [this message]
2023-05-17 12:18 ` [PATCH v2 1/2] soc: qcom: geni-se: Add interfaces geni_se_tx_init_dma() and geni_se_rx_init_dma() Vijaya Krishna Nivarthi
2023-05-17 14:18 ` Doug Anderson
2023-06-06 15:53 ` Mark Brown
2023-06-06 16:53 ` Konrad Dybcio
2023-05-17 12:18 ` [PATCH v2 2/2] spi: spi-geni-qcom: Do not do DMA map/unmap inside driver, use framework instead Vijaya Krishna Nivarthi
2023-05-17 14:20 ` Doug Anderson
2023-06-06 16:56 ` Konrad Dybcio
2023-06-06 17:49 ` [PATCH v2 0/2] spi-geni-qcom: Add new interfaces and utilise them to do map/unmap in framework for SE DMA Mark Brown
2023-06-07 1:14 ` Vijaya Krishna Nivarthi
2023-06-07 12:28 ` Mark Brown
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