[PATCH v9 0/2] platform/x86/lenovo: Yoga Book 9 keyboard dock detection

[Dave Carey <carvsdriver@gmail.com>]

Hi Armin,

Thank you for the v8 review.  All nine items are addressed in v9:

  - Added struct lenovo_feature_status { __le32 id; __le32 status; } __packed;
    and used it for size calculations and field access via le32_to_cpu().
  - Added ID verification: return -EIO if le32_to_cpu(fs->id) != 0x00060000.
  - Dropped the error message from yb9_kbdock_query(); returning the error
    code is sufficient.
  - Replaced the global struct + mutex with a BLOCKING_NOTIFIER_HEAD at
    module scope.  The event driver fires the chain from .notify_new(); the
    block driver registers a notifier_block and owns the input_dev in its
    per-device private struct.  No global state, no mutex.
  - Switched from .notify() to .notify_new() to receive a pre-parsed
    wmi_buffer directly.
  - Marked yb9_kbdock_attrs[] and the attribute pointer as const.
  - Moved dmi_check_system() to yb9_kbdock_init(); DMI table is now
    __initconst.
  - Used le32_to_cpu(fs->status) directly (BKBD is zero-extended to 32 bits
    by ACPI); removed BKBD_FIELD masking and the BKBD_TOP_HALF /
    BKBD_BOTTOM_HALF constants (not needed by driver logic).
  - Dropped #include <linux/bitfield.h>, <linux/bits.h>, and <linux/mutex.h>
    (no longer needed); added #include <linux/notifier.h>.

Patch 1/2 (lenovo-ymc) is unchanged from v8, with Hans de Goede's
Reviewed-by tag added.

Tested on Lenovo Yoga Book 9 14IAH10 (model 83KJ), kernel 7.0.

Dave Carey (2):
  platform/x86/lenovo: lenovo-ymc: Suppress probe on Yoga Book 9 14IAH10
  platform/x86/lenovo: Add Yoga Book 9 keyboard dock detection driver

 Documentation/ABI/testing/sysfs-driver-lenovo-yb9-kbdock |  19 ++
 MAINTAINERS                                                |   7 +
 drivers/platform/x86/lenovo/Kconfig                       |  14 +
 drivers/platform/x86/lenovo/Makefile                      |   1 +
 drivers/platform/x86/lenovo/yb9-kbdock.c                  | 310 ++++++++++++++++++
 drivers/platform/x86/lenovo/ymc.c                         |  19 ++
 6 files changed, 370 insertions(+)

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2.54.0