linux-kernel - Re: [RESEND PATCH v2 8/9] ASoC: qcom: q6asm-dai: add support for ALAC and APE decoders

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Message-ID: <fcee2779-fee8-e3d9-590f-e28fc5880ea0@linaro.org>
Date:   Fri, 13 Mar 2020 12:15:59 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Vinod Koul <vkoul@...nel.org>, Mark Brown <broonie@...nel.org>,
        Takashi Iwai <tiwai@...e.com>
Cc:     linux-arm-msm@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Patrick Lai <plai@...eaurora.org>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH v2 8/9] ASoC: qcom: q6asm-dai: add support for ALAC
 and APE decoders



On 13/03/2020 10:16, Vinod Koul wrote:
> Qualcomm DSPs also supports the ALAC and APE decoders, so add support
> for these and convert the snd_codec_params to qdsp format.
> 
> Signed-off-by: Vinod Koul <vkoul@...nel.org>
One minor nit, other that,

Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

> ---
>   sound/soc/qcom/qdsp6/q6asm-dai.c | 67 +++++++++++++++++++++++++++++++-
>   1 file changed, 66 insertions(+), 1 deletion(-)
> 
> diff --git a/sound/soc/qcom/qdsp6/q6asm-dai.c b/sound/soc/qcom/qdsp6/q6asm-dai.c
> index 53c250778eea..948710759824 100644
> --- a/sound/soc/qcom/qdsp6/q6asm-dai.c
> +++ b/sound/soc/qcom/qdsp6/q6asm-dai.c
> @@ -628,12 +628,16 @@ static int q6asm_dai_compr_set_params(struct snd_compr_stream *stream,
>   	struct q6asm_dai_data *pdata;
>   	struct q6asm_flac_cfg flac_cfg;
>   	struct q6asm_wma_cfg wma_cfg;
> +	struct q6asm_alac_cfg alac_cfg;
> +	struct q6asm_ape_cfg ape_cfg;
>   	unsigned int wma_v9 = 0;
>   	struct device *dev = c->dev;
>   	int ret;
>   	union snd_codec_options *codec_options;
>   	struct snd_dec_flac *flac;
>   	struct snd_dec_wma *wma;
> +	struct snd_dec_alac *alac;
> +	struct snd_dec_ape *ape;
>   
>   	codec_options = &(prtd->codec_param.codec.options);
>   
> @@ -756,6 +760,65 @@ static int q6asm_dai_compr_set_params(struct snd_compr_stream *stream,
>   			dev_err(dev, "WMA9 CMD failed:%d\n", ret);
>   			return -EIO;
>   		}
> +		break;
> +
> +	case SND_AUDIOCODEC_ALAC:
> +		memset(&alac_cfg, 0x0, sizeof(alac_cfg));
> +		alac = &codec_options->alac_d;
> +
> +		alac_cfg.sample_rate = params->codec.sample_rate;
> +		alac_cfg.avg_bit_rate = params->codec.bit_rate;
> +		alac_cfg.bit_depth = prtd->bits_per_sample;
> +		alac_cfg.num_channels = params->codec.ch_in;
> +
> +		alac_cfg.frame_length = alac->frame_length;
> +		alac_cfg.pb = alac->pb;
> +		alac_cfg.mb = alac->mb;
> +		alac_cfg.kb = alac->kb;
> +		alac_cfg.max_run = alac->max_run;
> +		alac_cfg.compatible_version = alac->compatible_version;
> +		alac_cfg.max_frame_bytes = alac->max_frame_bytes;
> +
> +		switch (params->codec.ch_in) {
> +		case 1:
> +			alac_cfg.channel_layout_tag = (100 << 16) | 1;

We should probably define this layout tag in asm.h
something like:

#define ALAC_CHANNEL_LAYOUT_TAG_Mono (100<<16) | 1
#define ALAC_CHANNEL_LAYOUT_TAG_STEREO (100<<16) | 2

--srini

> +			break;
> +		case 2:
> +			alac_cfg.channel_layout_tag = (101 << 16) | 2;
> +			break;
> +		}