linux-kernel - Re: [PATCH v3] ASoC: qcom: Add four speaker support on MI2S secondary

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Date:   Wed, 9 Jun 2021 12:31:33 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Srinivasa Rao Mandadapu <srivasam@...eaurora.org>,
        agross@...nel.org, alsa-devel@...a-project.org,
        bgoswami@...eaurora.org, bjorn.andersson@...aro.org,
        broonie@...nel.org, devicetree@...r.kernel.org,
        judyhsiao@...omium.org, lgirdwood@...il.com,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        perex@...ex.cz, plai@...eaurora.org, robh+dt@...nel.org,
        rohitkr@...eaurora.org, srinivas.kandagatla@...aro.org,
        tiwai@...e.com
Subject: Re: [PATCH v3] ASoC: qcom: Add four speaker support on MI2S secondary

Quoting Srinivasa Rao Mandadapu (2021-06-09 06:30:39)
> diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
> index c62d2612e8f5..aff39c9f6326 100644
> --- a/sound/soc/qcom/lpass-cpu.c
> +++ b/sound/soc/qcom/lpass-cpu.c
> @@ -29,6 +29,15 @@
>  #define LPASS_CPU_I2S_SD0_1_2_MASK     GENMASK(2, 0)
>  #define LPASS_CPU_I2S_SD0_1_2_3_MASK   GENMASK(3, 0)
>
> +/*
> + * Channel maps for Quad channel playbacks on MI2S Secondary
> + */
> +static struct snd_pcm_chmap_elem lpass_quad_chmaps[] = {

Can this be const?

> +               { .channels = 4,
> +                 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_RL,
> +                               SNDRV_CHMAP_FR, SNDRV_CHMAP_RR } },
> +               { }
> +};
>  static int lpass_cpu_init_i2sctl_bitfields(struct device *dev,
>                         struct lpaif_i2sctl *i2sctl, struct regmap *map)
>  {