| Message ID | 20191210145345.11616-6-sudeep.holla@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | firmware: arm_scmi: Add support for multiple device per protocol | expand |
On 10/12/2019 14:53, Sudeep Holla wrote: > Platform drivers now have the option to have the platform core create > and remove any needed sysfs attribute files. Using the same, let's add > the scmi firmware and protocol version attributes as well as vendor and > sub-vendor identifiers to sysfs. > > It helps to identify the firmware details from the sysfs entries similar > to ARM SCPI implementation. > > Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> > --- > drivers/firmware/arm_scmi/driver.c | 47 ++++++++++++++++++++++++++++++ > 1 file changed, 47 insertions(+) > > diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c > index 0bbdc7c9eb0f..26b2c438bd59 100644 > --- a/drivers/firmware/arm_scmi/driver.c > +++ b/drivers/firmware/arm_scmi/driver.c > @@ -979,6 +979,52 @@ static int scmi_remove(struct platform_device *pdev) > return ret; > } > > +static ssize_t protocol_version_show(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct scmi_info *info = dev_get_drvdata(dev); > + > + return sprintf(buf, "%u.%u\n", info->version.major_ver, > + info->version.minor_ver); > +} > +static DEVICE_ATTR_RO(protocol_version); > + > +static ssize_t firmware_version_show(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct scmi_info *info = dev_get_drvdata(dev); > + > + return sprintf(buf, "0x%x\n", info->version.impl_ver); > +} > +static DEVICE_ATTR_RO(firmware_version); > + > +static ssize_t vendor_id_show(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct scmi_info *info = dev_get_drvdata(dev); > + > + return sprintf(buf, "%s\n", info->version.vendor_id); > +} > +static DEVICE_ATTR_RO(vendor_id); > + > +static ssize_t sub_vendor_id_show(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + struct scmi_info *info = dev_get_drvdata(dev); > + > + return sprintf(buf, "%s\n", info->version.sub_vendor_id); > +} > +static DEVICE_ATTR_RO(sub_vendor_id); > + > +static struct attribute *versions_attrs[] = { > + &dev_attr_firmware_version.attr, > + &dev_attr_protocol_version.attr, > + &dev_attr_vendor_id.attr, > + &dev_attr_sub_vendor_id.attr, > + NULL, > +}; > +ATTRIBUTE_GROUPS(versions); > + > static const struct scmi_desc scmi_generic_desc = { > .max_rx_timeout_ms = 30, /* We may increase this if required */ > .max_msg = 20, /* Limited by MBOX_TX_QUEUE_LEN */ > @@ -997,6 +1043,7 @@ static struct platform_driver scmi_driver = { > .driver = { > .name = "arm-scmi", > .of_match_table = scmi_of_match, > + .dev_groups = versions_groups, > }, > .probe = scmi_probe, > .remove = scmi_remove, > -- > 2.17.1 > LGTM. Reviewed-by: Cristian Marussi <cristian.marussi@arm.com> Cristian
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index 0bbdc7c9eb0f..26b2c438bd59 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -979,6 +979,52 @@ static int scmi_remove(struct platform_device *pdev) return ret; } +static ssize_t protocol_version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct scmi_info *info = dev_get_drvdata(dev); + + return sprintf(buf, "%u.%u\n", info->version.major_ver, + info->version.minor_ver); +} +static DEVICE_ATTR_RO(protocol_version); + +static ssize_t firmware_version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct scmi_info *info = dev_get_drvdata(dev); + + return sprintf(buf, "0x%x\n", info->version.impl_ver); +} +static DEVICE_ATTR_RO(firmware_version); + +static ssize_t vendor_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct scmi_info *info = dev_get_drvdata(dev); + + return sprintf(buf, "%s\n", info->version.vendor_id); +} +static DEVICE_ATTR_RO(vendor_id); + +static ssize_t sub_vendor_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct scmi_info *info = dev_get_drvdata(dev); + + return sprintf(buf, "%s\n", info->version.sub_vendor_id); +} +static DEVICE_ATTR_RO(sub_vendor_id); + +static struct attribute *versions_attrs[] = { + &dev_attr_firmware_version.attr, + &dev_attr_protocol_version.attr, + &dev_attr_vendor_id.attr, + &dev_attr_sub_vendor_id.attr, + NULL, +}; +ATTRIBUTE_GROUPS(versions); + static const struct scmi_desc scmi_generic_desc = { .max_rx_timeout_ms = 30, /* We may increase this if required */ .max_msg = 20, /* Limited by MBOX_TX_QUEUE_LEN */ @@ -997,6 +1043,7 @@ static struct platform_driver scmi_driver = { .driver = { .name = "arm-scmi", .of_match_table = scmi_of_match, + .dev_groups = versions_groups, }, .probe = scmi_probe, .remove = scmi_remove,
Platform drivers now have the option to have the platform core create and remove any needed sysfs attribute files. Using the same, let's add the scmi firmware and protocol version attributes as well as vendor and sub-vendor identifiers to sysfs. It helps to identify the firmware details from the sysfs entries similar to ARM SCPI implementation. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> --- drivers/firmware/arm_scmi/driver.c | 47 ++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) -- 2.17.1