linux-kernel - Re: [PATCH v2 1/2] soc: qcom: geni-se: Add interfaces geni_se_tx_init_dma() and geni_se_rx_init

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Date:   Wed, 17 May 2023 07:18:17 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Vijaya Krishna Nivarthi <quic_vnivarth@...cinc.com>
Cc:     agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        broonie@...nel.org, linux-arm-msm@...r.kernel.org,
        linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        quic_msavaliy@...cinc.com, mka@...omium.org, swboyd@...omium.org,
        quic_vtanuku@...cinc.com, quic_ptalari@...cinc.com
Subject: Re: [PATCH v2 1/2] soc: qcom: geni-se: Add interfaces
 geni_se_tx_init_dma() and geni_se_rx_init_dma()

Hi,

On Wed, May 17, 2023 at 5:18 AM Vijaya Krishna Nivarthi
<quic_vnivarth@...cinc.com> wrote:
>
> The geni_se_xx_dma_prep() interfaces necessarily do DMA mapping before
> initiating DMA transfers. This is not suitable for spi where framework
> is expected to handle map/unmap.
>
> Expose new interfaces geni_se_xx_init_dma() which do only DMA transfer.
>
> Signed-off-by: Vijaya Krishna Nivarthi <quic_vnivarth@...cinc.com>
> ---
> v1 -> v2:
> - interfaces to take dma address as argument instead of its pointer
> ---
>  drivers/soc/qcom/qcom-geni-se.c  | 67 +++++++++++++++++++++++++++++-----------
>  include/linux/soc/qcom/geni-se.h |  4 +++
>  2 files changed, 53 insertions(+), 18 deletions(-)

Mark and Bjorn will have to coordinate how they want to land this,
since normally patch #1 would go through the Qualcomm tree and patch
#2 through the SPI tree. In any case:

Reviewed-by: Douglas Anderson <dianders@...omium.org>