linux-kernel - Re: [PATCH v2 12/14] arm64: dts: qcom: qrb4210-rb2: add WSA audio playback support

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Message-ID: <e2fba6e9-6548-44fe-a15c-cd29f5650b74@oss.qualcomm.com>
Date: Fri, 13 Dec 2024 13:41:11 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Alexey Klimov <alexey.klimov@...aro.org>, broonie@...nel.org,
        konradybcio@...nel.org, konrad.dybcio@....qualcomm.com,
        andersson@...nel.org, srinivas.kandagatla@...aro.org
Cc: tiwai@...e.com, lgirdwood@...il.com, perex@...ex.cz, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, dmitry.baryshkov@...aro.org,
        linux-sound@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 12/14] arm64: dts: qcom: qrb4210-rb2: add WSA audio
 playback support

On 12.12.2024 1:47 AM, Alexey Klimov wrote:
> Add support for audio playback via WCD937X/WSA881X. From DSP
> and rxmacro the sound stream goes into AUX port of wcd codec.
> wcd codec decodes digital audio into analog and outputs it to
> single wsa amplifier hence only the mono configuration.
> 
> The audio playback is verified using the following commands:
> 
> amixer -c0 cset iface=MIXER,name='AUX_RDAC Switch' 1
> amixer -c0 cset iface=MIXER,name='RX_RX2 Digital Volume' 80
> amixer -c0 cset iface=MIXER,name='RX INT2_1 MIX1 INP0' 'RX2'
> amixer -c0 cset iface=MIXER,name='RX_CODEC_DMA_RX_1 Audio Mixer MultiMedia1' 1
> amixer -c0 cset iface=MIXER,name='RX_MACRO RX2 MUX' 'AIF2_PB'
> amixer -c0 cset iface=MIXER,name='SpkrMono WSA_RDAC' 1
> amixer -c0 cset iface=MIXER,name='LO Switch' 1
> amixer -c0 cset iface=MIXER,name='RX HPH Mode' 4
> 
> aplay -D hw:0,0 /usr/share/sounds/alsa/Front_Center.wav
> 
> Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> Signed-off-by: Alexey Klimov <alexey.klimov@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 20 +++++++++++++++++++-
>  1 file changed, 19 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
> index 827ce5f7adfb..34ba563d0d07 100644
> --- a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
> +++ b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
> @@ -111,7 +111,9 @@ sound {
>  		pinctrl-0 = <&lpi_i2s2_active>;
>  		pinctrl-names = "default";
>  		model = "Qualcomm-RB2-WSA8815-Speakers-DMIC0";
> -		audio-routing = "MM_DL1", "MultiMedia1 Playback",
> +		audio-routing = "IN3_AUX", "AUX_OUT",
> +				"SpkrMono WSA_IN", "AUX",
> +				"MM_DL1", "MultiMedia1 Playback",
>  				"MM_DL2", "MultiMedia2 Playback";
>  
>  		mm1-dai-link {
> @@ -145,6 +147,22 @@ codec {
>  				sound-dai = <&lt9611_codec 0>;
>  			};
>  		};
> +
> +		wsa-dai-link {
> +			link-name = "WSA Playback";
> +
> +			cpu {
> +				sound-dai = <&q6afedai RX_CODEC_DMA_RX_1>;
> +			};
> +
> +			platform {
> +				sound-dai = <&q6routing>;
> +			};
> +
> +			codec {
> +				sound-dai = <&wsa881x>, <&wcd937x 0>, <&swr1 3>, <&rxmacro 1>;
> +			};

Please sort these subnodes alphabetically - and yes I realize
we managed to overlook that for 10 years

lgtm otherwise

Konrad