linux-kernel - Re: [PATCH V2] dmaengine: sprd: Support two-stage dma interrupt

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Message-ID: <CAF12kFsKV3dY4pTxv5TxHZ0=WWnNRtjTwJfzrrs0_9YGvBwu_w@mail.gmail.com>
Date:   Thu, 20 Oct 2022 15:33:06 +0800
From:   Cixi Geng <gengcixi@...il.com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     orsonzhai@...il.com, baolin.wang@...ux.alibaba.com,
        zhang.lyra@...il.com, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, Cixi Geng <cixi.geng1@...soc.com>
Subject: Re: [PATCH V2] dmaengine: sprd: Support two-stage dma interrupt

Vinod Koul <vkoul@...nel.org> 于2022年10月19日周三 22:07写道：
>
> On 04-10-22, 07:49, Cixi Geng wrote:
> > From: Cixi Geng <cixi.geng1@...soc.com>
> >
> > Audio need to request Audio CP global dma interrupt, so Audio CP
> > DMA should support two-stage interrupt to adapte it.
> > It will occur interrupt when two-stage dma channel transfer done.
>
> The patch looks fine to me but...
>
> > diff --git a/include/linux/dma/sprd-dma.h b/include/linux/dma/sprd-dma.h
> > index d09c6f6f6da5..26de41d6d915 100644
> > --- a/include/linux/dma/sprd-dma.h
> > +++ b/include/linux/dma/sprd-dma.h
>
> >  enum sprd_dma_int_type {
> >       SPRD_DMA_NO_INT,
> > @@ -112,6 +120,10 @@ enum sprd_dma_int_type {
> >       SPRD_DMA_TRANS_BLK_INT,
> >       SPRD_DMA_LIST_INT,
> >       SPRD_DMA_CFGERR_INT,
> > +     SPRD_DMA_SRC_CHN0_INT,
> > +     SPRD_DMA_SRC_CHN1_INT,
> > +     SPRD_DMA_DST_CHN0_INT,
> > +     SPRD_DMA_DST_CHN1_INT,
>
> why is sprd_dma_int_type part of driver interface. sprd_dma_int_type is
> used only by this driver and should be moved into the driver..
>
> Can you change that as well please
the two-stage interrupts added need more discuss and test,
anyway, I can create a new patch for the change to move init_type into driver,
>
> --
> ~Vinod