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HID: intel-ish-hid: loader: Add PRODUCT_FAMILY-based firmware matching

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Add support for firmware filenames that include the CRC32 checksum of the
DMI product_family field. Several OEMs ship ISH firmware variants shared
across a product family while product_name or product_sku may differ. This
intermediate matching granularity reduces duplication and improves firmware
selection for vendor-customized platforms.

The newly supported filename forms are checked before existing patterns:

  ish_${gen}_${vendor}_${family}_${name}_${sku}.bin
  ish_${gen}_${vendor}_${family}_${sku}.bin
  ish_${gen}_${vendor}_${family}_${name}.bin
  ish_${gen}_${vendor}_${family}.bin

The legacy product_name/product_sku rules remain unchanged and continue
to provide fallback matching.

ISH_FW_FILENAME_LEN_MAX is changed to 72 to accommodate the product_family.

Tested with X9 series and X1 series.

Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Tested-by: Richie Roy Jayme <rjayme.jp@gmail.com>
Signed-off-by: Vishnu Sankar <vishnuocv@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
This commit is contained in:
Vishnu Sankar 2025-12-22 17:05:11 +09:00 • committed by Jiri Kosina
commit 043251b2dd
1 changed files with 56 additions and 2 deletions
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