Re: [PATCH 0/11][RFC] sound DMA support patches

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Morimoto-san,

On Tuesday 28 October 2014 18:33:38 Kuninori Morimoto wrote:
> Hi Laurent again
> 
> Thank you for your DMA cyclic work
> 
> > > I've pushed my test branch to
> > > 
> > > 	git://linuxtv.org/pinchartl/fbdev.git dma/audio
> > > 
> > > It doesn't include support for DMA hardware descriptors yet, as I wanted
> > > to rule out any issue with them.
> 
> Unfortunately, it was patch applying magic.
> ak4643 is needed under iic2, not iic1.
> Can you add attached patch on your dma/audio branch ?
> 
> It works for me.
> When you use sound on Lager board, you need amixer setting.
> And you can use bottom jack of CN17 for sound output.
> 
>      / # amixer set "LINEOUT Mixer DACL" on

After applying your patch and setting the control I get sound ! I'll now test 
and debug hardware descriptors support.

Thank you for your help.

>      /* start sound playback and check DMA interrupt */
> 
>      / # aplay /home/xxx.wav &
>      / # grep dma /proc/interrupts
>      ...
>      352:        103          0          0          0       GIC 352 
> ec700000.dma-contorller:0 / # grep dma /proc/interrupts
>      ...
>      352:        124          0          0          0       GIC 352 
> ec700000.dma-contorller:0 / # grep dma /proc/interrupts
>      ...
>      352:        146          0          0          0       GIC 352 
> ec700000.dma-contorller:0 / # grep dma /proc/interrupts
>      ...
>      352:        195          0          0          0       GIC 352 
> ec700000.dma-contorller:0 / # grep dma /proc/interrupts
>      ...
>      352:        216          0          0          0       GIC 352 
> ec700000.dma-contorller:0 / # grep dma /proc/interrupts
>      ...
>      352:        239          0          0          0       GIC 352 
> ec700000.dma-contorller:0
> 
>      /* stop sound playback and check DMA interrupt */
> 
>      / # fg
>      aplay /home/Calm_16bit_48k.wav
>      ^CAborted by signal Interrupt...
>      / # grep dma /proc/interrupts
>      ...
>      352:        280          0          0          0       GIC 352 
> ec700000.dma-contorller:0 / # grep dma /proc/interrupts
>      ...
>      352:        280          0          0          0       GIC 352 
> ec700000.dma-contorller:0
> 
> ----------------------
> diff --git a/arch/arm/boot/dts/r8a7790-lager.dts
> b/arch/arm/boot/dts/r8a7790-lager.dts index f891a00..03fe43a 100644
> --- a/arch/arm/boot/dts/r8a7790-lager.dts
> +++ b/arch/arm/boot/dts/r8a7790-lager.dts
> @@ -409,12 +409,6 @@
>         status = "ok";
>         pinctrl-0 = <&iic1_pins>;
>         pinctrl-names = "default";
> -
> -       ak4643: sound_codec {
> -               compatible = "asahi-kasei,ak4643";
> -               #sound-dai-cells = <0>;
> -               reg = <0x12>;
> -       };
>  };
> 
>  &iic2  {
> @@ -434,6 +428,12 @@
>                         };
>                 };
>         };
> +
> +       ak4643: sound_codec {
> +               compatible = "asahi-kasei,ak4643";
> +               #sound-dai-cells = <0>;
> +               reg = <0x12>;
> +       };
>  };
> 
>  &iic3 {
> ----------------------

-- 
Regards,

Laurent Pinchart