alsa-info: provide DMI system sku

The system sku is used in SOF machine drivers to set specific quirks,
expose it in alsa-info to help support users. Example on a SoundWire
enabled device:

cat /sys/class/dmi/id/product_sku
0A32
dmidecode -s system-sku-number
0A32

Add a variable and expose the results of both methods.

Note that the dmidecode support is very recent and might not yet be
available in all distros:

http://git.savannah.nongnu.org/cgit/dmidecode.git/commit/?id=d70d5e686148eabe90c89fbf4cdcf5258db5aa05

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/alsa-info/alsa-info.sh b/alsa-info/alsa-info.sh
index 1914f84b351233bdbbcf6c417aeafcdd3c65f5e0..f179bfab865560b8b08373fec38df4b5ed4d0a80 100755 (executable)
--- a/alsa-info/alsa-info.sh
+++ b/alsa-info/alsa-info.sh
@@ -438,6 +438,7 @@ if [ -d /sys/class/dmi/id ]; then
     DMI_SYSTEM_PRODUCT_NAME=$(cat /sys/class/dmi/id/product_name 2>/dev/null)
     DMI_SYSTEM_PRODUCT_VERSION=$(cat /sys/class/dmi/id/product_version 2>/dev/null)
     DMI_SYSTEM_FIRMWARE_VERSION=$(cat /sys/class/dmi/id/bios_version 2>/dev/null)
+    DMI_SYSTEM_SKU=$(cat /sys/class/dmi/id/product_sku 2>/dev/null)
     DMI_BOARD_VENDOR=$(cat /sys/class/dmi/id/board_vendor 2>/dev/null)
     DMI_BOARD_NAME=$(cat /sys/class/dmi/id/board_name 2>/dev/null)
 elif [ -x $DMIDECODE ]; then
@@ -445,6 +446,7 @@ elif [ -x $DMIDECODE ]; then
     DMI_SYSTEM_PRODUCT_NAME=$($DMIDECODE -s system-product-name 2>/dev/null)
     DMI_SYSTEM_PRODUCT_VERSION=$($DMIDECODE -s system-version 2>/dev/null)
     DMI_SYSTEM_FIRMWARE_VERSION=$($DMIDECODE -s bios-version 2>/dev/null)
+    DMI_SYSTEM_SKU=$($DMIDECODE -s system-sku-number 2>/dev/null)
     DMI_BOARD_VENDOR=$($DMIDECODE -s baseboard-manufacturer 2>/dev/null)
     DMI_BOARD_NAME=$($DMIDECODE -s baseboard-product-name 2>/dev/null)
 fi
@@ -503,6 +505,7 @@ echo "Manufacturer:      $DMI_SYSTEM_MANUFACTURER" >> $FILE
 echo "Product Name:      $DMI_SYSTEM_PRODUCT_NAME" >> $FILE
 echo "Product Version:   $DMI_SYSTEM_PRODUCT_VERSION" >> $FILE
 echo "Firmware Version:  $DMI_SYSTEM_FIRMWARE_VERSION" >> $FILE
+echo "System SKU:        $DMI_SYSTEM_SKU" >> $FILE
 echo "Board Vendor:      $DMI_BOARD_VENDOR" >> $FILE
 echo "Board Name:        $DMI_BOARD_NAME" >> $FILE
 echo "" >> $FILE