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

["shengjiu.wang@freescale.com" <shengjiu.wang@freescale.com>]

Hi Xiubo Li

     Lars-Peter has point out the root cause. It is caused by the SND_SOC_FSL_ASOC_CARD, which will select SND_SOC_IMX_PCM_DMA.

     Thank you very much anyway.

Best regards
Wang shengjiu

-----Original Message-----
From: Xiubo Li-B47053 
Sent: Tuesday, August 19, 2014 5:00 PM
To: Wang Shengjiu-B02247
Cc: Lars-Peter Clausen; lgirdwood@gmail.com; broonie@kernel.org; perex@perex.cz; tiwai@suse.de; nicoleotsuka@gmail.com; shc_work@mail.ru; Estevam Fabio-R49496; xobs@kosagi.com; arnd@arndb.de; sfr@canb.auug.org.au; timur@tabi.org; alsa-devel@alsa-project.org; linuxppc-dev@lists.ozlabs.org; linux-kernel@vger.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@freescale.com]
> Sent: Tuesday, August 19, 2014 4:21 PM
> To: Xiubo Li-B47053
> Cc: Lars-Peter Clausen; lgirdwood@gmail.com; broonie@kernel.org; 
> perex@perex.cz; tiwai@suse.de; nicoleotsuka@gmail.com; 
> shc_work@mail.ru; Estevam Fabio-R49496; xobs@kosagi.com; 
> arnd@arndb.de; sfr@canb.auug.org.au; timur@tabi.org; 
> alsa-devel@alsa-project.org; linuxppc-dev@lists.ozlabs.org; 
> linux-kernel@vger.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@intel.com>
> > > > >Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.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