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acpi/nfit: Add sysfs "id" for NVDIMM ID

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ACPI 6.1, section 5.2.25.9, defines an identifier for an NVDIMM.

Change the NFIT driver to add a new sysfs file "id" under nfit
directory.

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Robert Elliott <elliott@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Toshi Kani 2016-04-25 15:34:59 -06:00 committed by Dan Williams
parent 5ad9a7fde0
commit 38a879ba9c
1 changed files with 19 additions and 0 deletions
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19
drivers/acpi/nfit.c
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@ -870,6 +870,24 @@ static ssize_t flags_show(struct device *dev,
} }
static DEVICE_ATTR_RO(flags); static DEVICE_ATTR_RO(flags);
static ssize_t id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev);
if (dcr->valid_fields & ACPI_NFIT_CONTROL_MFG_INFO_VALID)
return sprintf(buf, "%04x-%02x-%04x-%08x\n",
be16_to_cpu(dcr->vendor_id),
dcr->manufacturing_location,
be16_to_cpu(dcr->manufacturing_date),
be32_to_cpu(dcr->serial_number));
else
return sprintf(buf, "%04x-%08x\n",
be16_to_cpu(dcr->vendor_id),
be32_to_cpu(dcr->serial_number));
}
static DEVICE_ATTR_RO(id);
static struct attribute *acpi_nfit_dimm_attributes[] = { static struct attribute *acpi_nfit_dimm_attributes[] = {
&dev_attr_handle.attr, &dev_attr_handle.attr,
&dev_attr_phys_id.attr, &dev_attr_phys_id.attr,
@ -879,6 +897,7 @@ static struct attribute *acpi_nfit_dimm_attributes[] = {
&dev_attr_serial.attr, &dev_attr_serial.attr,
&dev_attr_rev_id.attr, &dev_attr_rev_id.attr,
&dev_attr_flags.attr, &dev_attr_flags.attr,
&dev_attr_id.attr,
NULL, NULL,
}; };