linux-kernel - RE: [alsa-devel] [PATCH V1 1/3] ASoC: fsl: Kconfig: remove dependence of SND_IMX_SOC for SND_SOC_IMX_PCM

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Message-ID: <3a0c98ca698e4d38b3e92f339049b883@BN1PR0301MB0609.namprd03.prod.outlook.com>
Date:	Tue, 19 Aug 2014 09:00:06 +0000
From:	"Li.Xiubo@...escale.com" <Li.Xiubo@...escale.com>
To:	"shengjiu.wang@...escale.com" <shengjiu.wang@...escale.com>
CC:	Lars-Peter Clausen <lars@...afoo.de>,
	"lgirdwood@...il.com" <lgirdwood@...il.com>,
	"broonie@...nel.org" <broonie@...nel.org>,
	"perex@...ex.cz" <perex@...ex.cz>, "tiwai@...e.de" <tiwai@...e.de>,
	"nicoleotsuka@...il.com" <nicoleotsuka@...il.com>,
	"shc_work@...l.ru" <shc_work@...l.ru>,
	"Fabio.Estevam@...escale.com" <Fabio.Estevam@...escale.com>,
	"xobs@...agi.com" <xobs@...agi.com>,
	"arnd@...db.de" <arnd@...db.de>,
	"sfr@...b.auug.org.au" <sfr@...b.auug.org.au>,
	"timur@...i.org" <timur@...i.org>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [alsa-devel] [PATCH V1 1/3] ASoC: fsl: Kconfig: remove dependence
 of SND_IMX_SOC for SND_SOC_IMX_PCM_DMA

How about the following :


diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index 5ae777a..d42f18c 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -15,7 +15,7 @@ config SND_SOC_FSL_ASRC
 config SND_SOC_FSL_SAI
        tristate "Synchronous Audio Interface (SAI) module support"
        select REGMAP_MMIO
-       select SND_SOC_IMX_PCM_DMA if SND_IMX_SOC != n
+       select SND_SOC_IMX_PCM_DMA
        select SND_SOC_GENERIC_DMAENGINE_PCM
        help
          Say Y if you want to add Synchronous Audio Interface (SAI)
@@ -25,7 +25,7 @@ config SND_SOC_FSL_SAI

 config SND_SOC_FSL_SSI
        tristate "Synchronous Serial Interface module support"
-       select SND_SOC_IMX_PCM_DMA if SND_IMX_SOC != n
+       select SND_SOC_IMX_PCM_DMA
        select SND_SOC_IMX_PCM_FIQ if SND_IMX_SOC != n && (MXC_TZIC || MXC_AVIC)
        select REGMAP_MMIO
        help
@@ -37,7 +37,7 @@ config SND_SOC_FSL_SSI
 config SND_SOC_FSL_SPDIF
        tristate "Sony/Philips Digital Interface module support"
        select REGMAP_MMIO
-       select SND_SOC_IMX_PCM_DMA if SND_IMX_SOC != n
+       select SND_SOC_IMX_PCM_DMA
        select SND_SOC_IMX_PCM_FIQ if SND_IMX_SOC != n && (MXC_TZIC || MXC_AVIC)
        help
          Say Y if you want to add Sony/Philips Digital Interface (SPDIF)
@@ -48,7 +48,7 @@ config SND_SOC_FSL_SPDIF
 config SND_SOC_FSL_ESAI
        tristate "Enhanced Serial Audio Interface (ESAI) module support"
        select REGMAP_MMIO
-       select SND_SOC_IMX_PCM_DMA if SND_IMX_SOC != n
+       select SND_SOC_IMX_PCM_DMA
        help
          Say Y if you want to add Enhanced Synchronous Audio Interface
          (ESAI) support for the Freescale CPUs.
@@ -76,6 +76,7 @@ config SND_SOC_FSL_ASOC_CARD

 config SND_SOC_IMX_PCM_DMA
        tristate
+       depends on SND_IMX_SOC
        select SND_SOC_GENERIC_DMAENGINE_PCM

 config SND_SOC_IMX_AUDMUX

Thanks,


BRs
Xiubo



> -----Original Message-----
> From: Shengjiu Wang [mailto:shengjiu.wang@...escale.com]
> Sent: Tuesday, August 19, 2014 4:21 PM
> To: Xiubo Li-B47053
> Cc: Lars-Peter Clausen; lgirdwood@...il.com; broonie@...nel.org;
> perex@...ex.cz; tiwai@...e.de; nicoleotsuka@...il.com; shc_work@...l.ru;
> Estevam Fabio-R49496; xobs@...agi.com; arnd@...db.de; sfr@...b.auug.org.au;
> timur@...i.org; alsa-devel@...a-project.org; linuxppc-dev@...ts.ozlabs.org;
> linux-kernel@...r.kernel.org
> Subject: Re: [alsa-devel] [PATCH V1 1/3] ASoC: fsl: Kconfig: remove dependence
> of SND_IMX_SOC for SND_SOC_IMX_PCM_DMA
> 
> On Tue, Aug 19, 2014 at 04:13:15PM +0800, Xiubo Li-B47053 wrote:
> > > Subject: Re: [alsa-devel] [PATCH V1 1/3] ASoC: fsl: Kconfig: remove
> dependence
> > > of SND_IMX_SOC for SND_SOC_IMX_PCM_DMA
> > >
> > > On Mon, Aug 18, 2014 at 06:52:46PM +0200, Lars-Peter Clausen wrote:
> > > > On 08/18/2014 10:38 AM, Shengjiu Wang wrote:
> > > > >Build kernel with SND_SOC_IMC_PCM_DMA=m && SND_IMX_SOC=n leads the
> > > following
> > > > >error:
> > > > >
> > > > >    sound/built-in.o: In function `fsl_sai_probe':
> > > > >>>fsl_sai.c:(.text+0x5f662): undefined reference to `imx_pcm_dma_init'
> > > > >    sound/built-in.o: In function `fsl_esai_probe':
> > > > >>>fsl_esai.c:(.text+0x6044b): undefined reference to `imx_pcm_dma_init'
> > > > >
> > > > >Most cpu driver in soc/fsl has use the function 'imx_pcm_dma_init'
> which is
> > > > >defined in imx-pcm-dma.c, so need to select SND_SOC_IMX_PCM_DMA, but it
> > > depends
> > > > >on SND_IMX_SOC, if SND_IMX_SOC=n, then SND_SOC_IMX_PCM_DMA will not be
> > > > >selected.
> > > > >So remove the dependence of SND_IMX_SOC for SND_SOC_IMX_PCM_DMA.
> > > > >
> > > > >Reported-by: kbuild test robot <fengguang.wu@...el.com>
> > > > >Signed-off-by: Shengjiu Wang <shengjiu.wang@...escale.com>
> > > >
> > > > Those if conditions where just added[1] by Arnd to avoid other build
> > > > failures. So just removing them again makes little sense.
> > > >
> > > > As far as I can see imx_pcm_dma_init() should be stubbed out when
> > > > SND_SOC_IMX_PCM_DMA is not selected. So what's going on here?
> > > >
> > > > [1]
> > >
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ff40
> > > 260f79dc0436604452bccd449bffd25ebafb
> > > >
> > > Lars-Peter Clausen & Arnd
> > >
> > > The purpose of Arnd's patch is same with me, which is to resolve the build
> > > error when SND_SOC_IMX_PCM_DMA=m & SND_SOC_FSL_SSI/SAI/ESAI/SPDIF=y, the
> > > error is "undefined reference to `imx_pcm_dma_init'".
> > > But Arnd's patch didn't involve this situation that SND_IMX_SOC=n &
> > > SND_SOC_IMX_PCM_DMA=m.
> > >
> > > Currently I think out a solution for this issue is to change
> > >
> > > select SND_SOC_IMX_PCM_DMA if SND_IMX_SOC != n
> > >
> > > to
> > >
> > > depends on SND_SOC_IMX_PCM_DMA != m
> > >
> > > How do you think about this?
> > >
> >
> > What will happen if to build both SAI/ESAI and IMX_PCM_DMA as modules at the
> same
> > time ?
> >
> > Thanks,
> >
> > BRs
> > Xiubo
> 
> I didn't find error/warning when SAI/ESAI and IMX_PCM_DMA are as modules. The
> build is successful.
> 
> >
> >
> > > best regards
> > > Wang shengjiu
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