[PATCH v2 0/6] HID: intel-ish-hid: Various power management improvements for hibernation

[Zhang Lixu <lixu.zhang@intel.com>]

- Separating hibernate callbacks in dev_pm_ops for clearer power state transitions
- Using IPC RESET in ish_wakeup() to ensure reliable device wakeup
- Scheduling firmware reset work on RESET_NOTIFY/ACK for robust recovery
- Resetting client state on resume from D3 to maintain consistency
- Enhancing resume logic in ishtp-hid-client for better stability

These patches enhance reliability, improve power management flow. All changes
have been validated on TwinLake (ISH 5.4), ArrowLake (ISH 5.6), and PantherLake
(ISH 5.8) platforms.

v2:
  - Rebased on top of [PATCH] HID: intel-ish-hid: Use dedicated unbound workqueues to prevent resume blocking
  - Changes in [PATCH v2 5/6] HID: intel-ish-hid: Use IPC RESET instead of void message in ish_wakeup()
    * Set the HW ready timeout to 10 seconds, matching the original timeout
      value used in ish_wakeup(), to prevent timeout issues on devices like
      the Lenovo ThinkPad X1 Titanium Gen 1 that require approximately 4
      seconds to become ready after wakeup.
    * Added RECVD_HW_READY_TIMEOUT macro for better code maintainability.

Zhang Lixu (6):
  HID: intel-ish-hid: Add ishtp_get_connection_state() interface
  HID: intel-ishtp-hid: Clear suspended flag only after connected on
    resume
  HID: intel-ish-ipc: Reset clients state on resume from D3
  HID: intel-ish-hid: ipc: Always schedule FW reset work on
    RESET_NOTIFY/ACK
  HID: intel-ish-hid: Use IPC RESET instead of void message in
    ish_wakeup()
  HID: intel-ish-hid: ipc: Separate hibernate callbacks in dev_pm_ops

 drivers/hid/intel-ish-hid/ipc/ipc.c          | 78 +++++++++-----------
 drivers/hid/intel-ish-hid/ipc/pci-ish.c      | 29 +++++++-
 drivers/hid/intel-ish-hid/ishtp-hid-client.c | 11 ++-
 drivers/hid/intel-ish-hid/ishtp/client.c     |  6 ++
 include/linux/intel-ish-client-if.h          |  1 +
 5 files changed, 76 insertions(+), 49 deletions(-)

-- 
2.43.0