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Message-ID: <c2ab81bc-98e8-e833-a8cc-7176ff03809c@linaro.org>
Date: Wed, 9 Jun 2021 14:32:28 +0100
From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To: Srinivasa Rao Mandadapu <srivasam@...eaurora.org>,
agross@...nel.org, bjorn.andersson@...aro.org, lgirdwood@...il.com,
broonie@...nel.org, robh+dt@...nel.org, plai@...eaurora.org,
bgoswami@...eaurora.org, perex@...ex.cz, tiwai@...e.com,
rohitkr@...eaurora.org, linux-arm-msm@...r.kernel.org,
alsa-devel@...a-project.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, swboyd@...omium.org,
judyhsiao@...omium.org
Subject: Re: [PATCH v3] ASoC: qcom: Add four speaker support on MI2S secondary
On 09/06/2021 14:30, Srinivasa Rao Mandadapu wrote:
> Add four speaker support on MI2S secondary block
> by using I2S SD1 line on gpio52 pin, and add channel map
> control support in the lpass-cpu audio driver.
>
> Signed-off-by: Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
> ---
LGTM,
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
--srini
> Changes Since V2:
> -- Added empty entry at the end of channel maps array.
> Changes Since V1:
> -- removed set_channel_map/get_channel_map implementation as default kcontrols
> added in pcm_new API.
> sound/soc/qcom/lpass-cpu.c | 33 +++++++++++++++++++++++++++++++++
> sound/soc/qcom/lpass-sc7180.c | 1 +
> sound/soc/qcom/lpass.h | 2 ++
> 3 files changed, 36 insertions(+)
>
> 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[] = {
> + { .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)
> {
> @@ -324,6 +333,25 @@ const struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops = {
> };
> EXPORT_SYMBOL_GPL(asoc_qcom_lpass_cpu_dai_ops);
>
> +int lpass_cpu_pcm_new(struct snd_soc_pcm_runtime *rtd,
> + struct snd_soc_dai *dai)
> +{
> + int ret;
> + struct snd_soc_dai_driver *drv = dai->driver;
> + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
> +
> + if (drvdata->mi2s_playback_sd_mode[dai->id] == LPAIF_I2SCTL_MODE_QUAD01) {
> + ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
> + lpass_quad_chmaps, drv->playback.channels_max, 0,
> + NULL);
> + if (ret < 0)
> + return ret;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(lpass_cpu_pcm_new);
> +
> int asoc_qcom_lpass_cpu_dai_probe(struct snd_soc_dai *dai)
> {
> struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
> @@ -856,6 +884,11 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)
> PTR_ERR(drvdata->mi2s_bit_clk[dai_id]));
> return PTR_ERR(drvdata->mi2s_bit_clk[dai_id]);
> }
> + if (drvdata->mi2s_playback_sd_mode[dai_id] ==
> + LPAIF_I2SCTL_MODE_QUAD01) {
> + variant->dai_driver[dai_id].playback.channels_min = 4;
> + variant->dai_driver[dai_id].playback.channels_max = 4;
> + }
> }
>
> /* Allocation for i2sctl regmap fields */
> diff --git a/sound/soc/qcom/lpass-sc7180.c b/sound/soc/qcom/lpass-sc7180.c
> index 8c168d3c589e..77a556b27cf0 100644
> --- a/sound/soc/qcom/lpass-sc7180.c
> +++ b/sound/soc/qcom/lpass-sc7180.c
> @@ -58,6 +58,7 @@ static struct snd_soc_dai_driver sc7180_lpass_cpu_dai_driver[] = {
> },
> .probe = &asoc_qcom_lpass_cpu_dai_probe,
> .ops = &asoc_qcom_lpass_cpu_dai_ops,
> + .pcm_new = lpass_cpu_pcm_new,
> }, {
> .id = LPASS_DP_RX,
> .name = "Hdmi",
> diff --git a/sound/soc/qcom/lpass.h b/sound/soc/qcom/lpass.h
> index 83b2e08ade06..623ddccdafff 100644
> --- a/sound/soc/qcom/lpass.h
> +++ b/sound/soc/qcom/lpass.h
> @@ -259,5 +259,7 @@ void asoc_qcom_lpass_cpu_platform_shutdown(struct platform_device *pdev);
> int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev);
> int asoc_qcom_lpass_cpu_dai_probe(struct snd_soc_dai *dai);
> extern const struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops;
> +int lpass_cpu_pcm_new(struct snd_soc_pcm_runtime *rtd,
> + struct snd_soc_dai *dai);
>
> #endif /* __LPASS_H__ */
>
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