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[PATCH v3 3/6] firmware: arm_scmi: imx: Support getting cfg info of MISC protocol

Peng Fan posted 6 patches 1 month, 1 week ago
There is a newer version of this series
[PATCH v3 3/6] firmware: arm_scmi: imx: Support getting cfg info of MISC protocol
Posted by Peng Fan 1 month, 1 week ago 
MISC protocol supports getting the System Manager(SM) mode selection
and configuration name. Retrieve the information from SM.

Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 .../firmware/arm_scmi/vendors/imx/imx-sm-misc.c    | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
index 464afeae8267d8c1eca4c4d5e008eca6d741c6ff..220b9369fb537306f9e1a105930ad4d65e6b10aa 100644
--- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
+++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
@@ -26,6 +26,7 @@ enum scmi_imx_misc_protocol_cmd {
 	SCMI_IMX_MISC_CTRL_SET	= 0x3,
 	SCMI_IMX_MISC_CTRL_GET	= 0x4,
 	SCMI_IMX_MISC_DISCOVER_BUILDINFO = 0x6,
+	SCMI_IMX_MISC_CFG_INFO = 0xC,
 	SCMI_IMX_MISC_CTRL_NOTIFY = 0x8,
 };
 
@@ -75,6 +76,12 @@ struct scmi_imx_misc_buildinfo_out {
 	u8 buildtime[MISC_MAX_BUILDTIME];
 };
 
+struct scmi_imx_misc_cfg_info_out {
+	__le32 msel;
+#define MISC_MAX_CFGNAME	16
+	u8 cfgname[MISC_MAX_CFGNAME];
+};
+
 static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph,
 					struct scmi_imx_misc_info *mi)
 {
@@ -309,6 +316,30 @@ static int scmi_imx_misc_discover_build_info(const struct scmi_protocol_handle *
 	return ret;
 }
 
+static int scmi_imx_misc_cfg_info(const struct scmi_protocol_handle *ph)
+{
+	struct scmi_imx_misc_cfg_info_out *out;
+	char name[MISC_MAX_CFGNAME];
+	struct scmi_xfer *t;
+	int ret;
+
+	ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_CFG_INFO, 0, sizeof(*out), &t);
+	if (ret)
+		return ret;
+
+	ret = ph->xops->do_xfer(ph, t);
+	if (!ret) {
+		out = t->rx.buf;
+		strscpy(name, out->cfgname, MISC_MAX_CFGNAME);
+		dev_info(ph->dev, "SM Config\t= %s, mSel = %u\n",
+			 name, le32_to_cpu(out->msel));
+	}
+
+	ph->xops->xfer_put(ph, t);
+
+	return ret;
+}
+
 static const struct scmi_imx_misc_proto_ops scmi_imx_misc_proto_ops = {
 	.misc_ctrl_set = scmi_imx_misc_ctrl_set,
 	.misc_ctrl_get = scmi_imx_misc_ctrl_get,
@@ -340,6 +371,10 @@ static int scmi_imx_misc_protocol_init(const struct scmi_protocol_handle *ph)
 	if (ret)
 		return ret;
 
+	ret = scmi_imx_misc_cfg_info(ph);
+	if (ret)
+		return ret;
+
 	return ph->set_priv(ph, minfo, version);
 }
 

-- 
2.37.1
Re: [PATCH v3 3/6] firmware: arm_scmi: imx: Support getting cfg info of MISC protocol
Posted by Sudeep Holla 1 month ago 
On Wed, Aug 27, 2025 at 12:59:15PM +0800, Peng Fan wrote:
> MISC protocol supports getting the System Manager(SM) mode selection
> and configuration name. Retrieve the information from SM.
> 
> Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
> ---
>  .../firmware/arm_scmi/vendors/imx/imx-sm-misc.c    | 35 ++++++++++++++++++++++
>  1 file changed, 35 insertions(+)
> 
> diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
> index 464afeae8267d8c1eca4c4d5e008eca6d741c6ff..220b9369fb537306f9e1a105930ad4d65e6b10aa 100644
> --- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
> +++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
> @@ -26,6 +26,7 @@ enum scmi_imx_misc_protocol_cmd {
>  	SCMI_IMX_MISC_CTRL_SET	= 0x3,
>  	SCMI_IMX_MISC_CTRL_GET	= 0x4,
>  	SCMI_IMX_MISC_DISCOVER_BUILDINFO = 0x6,
> +	SCMI_IMX_MISC_CFG_INFO = 0xC,

1. Order it by command number
2. Be consistent with the document, MISC_CFG_INFO_GET is used there.

>  	SCMI_IMX_MISC_CTRL_NOTIFY = 0x8,
>  };
>  
> @@ -75,6 +76,12 @@ struct scmi_imx_misc_buildinfo_out {
>  	u8 buildtime[MISC_MAX_BUILDTIME];
>  };
>  
> +struct scmi_imx_misc_cfg_info_out {
> +	__le32 msel;
> +#define MISC_MAX_CFGNAME	16
> +	u8 cfgname[MISC_MAX_CFGNAME];
> +};
> +
>  static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph,
>  					struct scmi_imx_misc_info *mi)
>  {
> @@ -309,6 +316,30 @@ static int scmi_imx_misc_discover_build_info(const struct scmi_protocol_handle *
>  	return ret;
>  }
>  
> +static int scmi_imx_misc_cfg_info(const struct scmi_protocol_handle *ph)
> +{
> +	struct scmi_imx_misc_cfg_info_out *out;
> +	char name[MISC_MAX_CFGNAME];
> +	struct scmi_xfer *t;
> +	int ret;
> +
> +	ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_CFG_INFO, 0, sizeof(*out), &t);
> +	if (ret)
> +		return ret;
> +
> +	ret = ph->xops->do_xfer(ph, t);
> +	if (!ret) {
> +		out = t->rx.buf;
> +		strscpy(name, out->cfgname, MISC_MAX_CFGNAME);
> +		dev_info(ph->dev, "SM Config\t= %s, mSel = %u\n",
> +			 name, le32_to_cpu(out->msel));
> +	}
> +
> +	ph->xops->xfer_put(ph, t);
> +
> +	return ret;
> +}
> +
>  static const struct scmi_imx_misc_proto_ops scmi_imx_misc_proto_ops = {
>  	.misc_ctrl_set = scmi_imx_misc_ctrl_set,
>  	.misc_ctrl_get = scmi_imx_misc_ctrl_get,
> @@ -340,6 +371,10 @@ static int scmi_imx_misc_protocol_init(const struct scmi_protocol_handle *ph)
>  	if (ret)
>  		return ret;
>  
> +	ret = scmi_imx_misc_cfg_info(ph);

s/scmi_imx_misc_cfg_info/scmi_imx_misc_cfg_info_get/

> +	if (ret)

Again the document hasn't mark it as mandatory, so handle NOT_SUPPORTED
gracefully.

-- 
Regards,
Sudeep
Re: [PATCH v3 3/6] firmware: arm_scmi: imx: Support getting cfg info of MISC protocol
Posted by Peng Fan 1 month ago 
On Fri, Aug 29, 2025 at 11:56:15AM +0100, Sudeep Holla wrote:
>On Wed, Aug 27, 2025 at 12:59:15PM +0800, Peng Fan wrote:
>> MISC protocol supports getting the System Manager(SM) mode selection
>> and configuration name. Retrieve the information from SM.
>> 
>> Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
>> Signed-off-by: Peng Fan <peng.fan@nxp.com>
>> ---
>>  .../firmware/arm_scmi/vendors/imx/imx-sm-misc.c    | 35 ++++++++++++++++++++++
>>  1 file changed, 35 insertions(+)
>> 
>> diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> index 464afeae8267d8c1eca4c4d5e008eca6d741c6ff..220b9369fb537306f9e1a105930ad4d65e6b10aa 100644
>> --- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> +++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> @@ -26,6 +26,7 @@ enum scmi_imx_misc_protocol_cmd {
>>  	SCMI_IMX_MISC_CTRL_SET	= 0x3,
>>  	SCMI_IMX_MISC_CTRL_GET	= 0x4,
>>  	SCMI_IMX_MISC_DISCOVER_BUILDINFO = 0x6,
>> +	SCMI_IMX_MISC_CFG_INFO = 0xC,
>
>1. Order it by command number
>2. Be consistent with the document, MISC_CFG_INFO_GET is used there.

Fix in V4.

>
>>  	SCMI_IMX_MISC_CTRL_NOTIFY = 0x8,
>>  };
>>  
>> @@ -75,6 +76,12 @@ struct scmi_imx_misc_buildinfo_out {
>>  	u8 buildtime[MISC_MAX_BUILDTIME];
>>  };
>>  
>> +struct scmi_imx_misc_cfg_info_out {
>> +	__le32 msel;
>> +#define MISC_MAX_CFGNAME	16
>> +	u8 cfgname[MISC_MAX_CFGNAME];
>> +};
>> +
>>  static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph,
>>  					struct scmi_imx_misc_info *mi)
>>  {
>> @@ -309,6 +316,30 @@ static int scmi_imx_misc_discover_build_info(const struct scmi_protocol_handle *
>>  	return ret;
>>  }
>>  
>> +static int scmi_imx_misc_cfg_info(const struct scmi_protocol_handle *ph)
>> +{
>> +	struct scmi_imx_misc_cfg_info_out *out;
>> +	char name[MISC_MAX_CFGNAME];
>> +	struct scmi_xfer *t;
>> +	int ret;
>> +
>> +	ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_CFG_INFO, 0, sizeof(*out), &t);
>> +	if (ret)
>> +		return ret;
>> +
>> +	ret = ph->xops->do_xfer(ph, t);
>> +	if (!ret) {
>> +		out = t->rx.buf;
>> +		strscpy(name, out->cfgname, MISC_MAX_CFGNAME);
>> +		dev_info(ph->dev, "SM Config\t= %s, mSel = %u\n",
>> +			 name, le32_to_cpu(out->msel));
>> +	}
>> +
>> +	ph->xops->xfer_put(ph, t);
>> +
>> +	return ret;
>> +}
>> +
>>  static const struct scmi_imx_misc_proto_ops scmi_imx_misc_proto_ops = {
>>  	.misc_ctrl_set = scmi_imx_misc_ctrl_set,
>>  	.misc_ctrl_get = scmi_imx_misc_ctrl_get,
>> @@ -340,6 +371,10 @@ static int scmi_imx_misc_protocol_init(const struct scmi_protocol_handle *ph)
>>  	if (ret)
>>  		return ret;
>>  
>> +	ret = scmi_imx_misc_cfg_info(ph);
>
>s/scmi_imx_misc_cfg_info/scmi_imx_misc_cfg_info_get/

Fix in V4.

>
>> +	if (ret)
>
>Again the document hasn't mark it as mandatory, so handle NOT_SUPPORTED
>gracefully.

Yeah,
"if (ret && ret != -EOPNOTSUPP)
	return ret;
"

Thanks,
Peng

>
>-- 
>Regards,
>Sudeep

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