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Message-ID: <CAA+D8ANM9QYe3idfkp5XJOXwqQUQ-qc_FcpQSKFDzQVhuTWZKw@mail.gmail.com>
Date: Fri, 25 Oct 2024 14:02:02 +0800
From: Shengjiu Wang <shengjiu.wang@...il.com>
To: Shengjiu Wang <shengjiu.wang@....com>
Cc: Xiubo.Lee@...il.com, festevam@...il.com, nicoleotsuka@...il.com,
lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz, tiwai@...e.com,
linuxppc-dev@...ts.ozlabs.org, linux-sound@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: fsl_mqs: Support accessing registers by scmi interface
On Sat, Oct 12, 2024 at 2:15 PM Shengjiu Wang <shengjiu.wang@....com> wrote:
>
> On i.MX95, the MQS module in Always-on (AON) domain only can
> be accessed by System Controller Management Interface (SCMI)
> MISC Protocol. So define a specific regmap_config for the case.
>
find an issue when IMX_SCMI_MISC_DRV=m but SND_SOC_FSL_MQS=y
will send v2 to fix it.
Best regards
Shengjiu Wang
> Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
> ---
> sound/soc/fsl/fsl_mqs.c | 41 +++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 41 insertions(+)
>
> diff --git a/sound/soc/fsl/fsl_mqs.c b/sound/soc/fsl/fsl_mqs.c
> index 145f9ca15e43..0513e9e8402e 100644
> --- a/sound/soc/fsl/fsl_mqs.c
> +++ b/sound/soc/fsl/fsl_mqs.c
> @@ -6,6 +6,7 @@
> // Copyright 2019 NXP
>
> #include <linux/clk.h>
> +#include <linux/firmware/imx/sm.h>
> #include <linux/module.h>
> #include <linux/moduleparam.h>
> #include <linux/mfd/syscon.h>
> @@ -74,6 +75,29 @@ struct fsl_mqs {
> #define FSL_MQS_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
> #define FSL_MQS_FORMATS SNDRV_PCM_FMTBIT_S16_LE
>
> +static int fsl_mqs_sm_read(void *context, unsigned int reg, unsigned int *val)
> +{
> + struct fsl_mqs *mqs_priv = context;
> + int num = 1;
> +
> + if (IS_ENABLED(CONFIG_IMX_SCMI_MISC_DRV) &&
> + mqs_priv->soc->ctrl_off == reg)
> + return scmi_imx_misc_ctrl_get(SCMI_IMX_CTRL_MQS1_SETTINGS, &num, val);
> +
> + return -EINVAL;
> +};
> +
> +static int fsl_mqs_sm_write(void *context, unsigned int reg, unsigned int val)
> +{
> + struct fsl_mqs *mqs_priv = context;
> +
> + if (IS_ENABLED(CONFIG_IMX_SCMI_MISC_DRV) &&
> + mqs_priv->soc->ctrl_off == reg)
> + return scmi_imx_misc_ctrl_set(SCMI_IMX_CTRL_MQS1_SETTINGS, val);
> +
> + return -EINVAL;
> +};
> +
> static int fsl_mqs_hw_params(struct snd_pcm_substream *substream,
> struct snd_pcm_hw_params *params,
> struct snd_soc_dai *dai)
> @@ -188,6 +212,13 @@ static const struct regmap_config fsl_mqs_regmap_config = {
> .cache_type = REGCACHE_NONE,
> };
>
> +static const struct regmap_config fsl_mqs_sm_regmap = {
> + .reg_bits = 32,
> + .val_bits = 32,
> + .reg_read = fsl_mqs_sm_read,
> + .reg_write = fsl_mqs_sm_write,
> +};
> +
> static int fsl_mqs_probe(struct platform_device *pdev)
> {
> struct device_node *np = pdev->dev.of_node;
> @@ -219,6 +250,16 @@ static int fsl_mqs_probe(struct platform_device *pdev)
> dev_err(&pdev->dev, "failed to get gpr regmap\n");
> return PTR_ERR(mqs_priv->regmap);
> }
> + } else if (mqs_priv->soc->type == TYPE_REG_SM) {
> + mqs_priv->regmap = devm_regmap_init(&pdev->dev,
> + NULL,
> + mqs_priv,
> + &fsl_mqs_sm_regmap);
> + if (IS_ERR(mqs_priv->regmap)) {
> + dev_err(&pdev->dev, "failed to init regmap: %ld\n",
> + PTR_ERR(mqs_priv->regmap));
> + return PTR_ERR(mqs_priv->regmap);
> + }
> } else {
> regs = devm_platform_ioremap_resource(pdev, 0);
> if (IS_ERR(regs))
> --
> 2.34.1
>
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