[PATCH v4 00/10] media: microchip-isc: AWB, stream-stop and endpoint-ref fixes

This series has a few fixes for the Microchip ISC/XISC driver, found
while testing and from the feedback on the combined series [1].

Fixes only, sent ahead of the enhancements so they can reach stable.
All but the two pfe_cfg0_bps cleanups carry a Fixes tag and Cc: stable.

[1] https://lore.kernel.org/r/[email protected]

Signed-off-by: Balakrishnan Sambath <[email protected]>
---
Changes in v4:
- Retarget the Fixes: tags to the atmel-isc commits that introduced
  each bug; microchip-isc is a verbatim copy, so the real origin is
  older. Kept the Reviewed-by tags as only the Fixes: SHAs changed.
  Let me know if you disagree.
- Init the ISC mutexes with devm_mutex_init() at probe, and drop the
  dead isc_async_complete_err label (Eugen).
- Drop a stale FIELD_PREP comment.
- Link to v3: https://lore.kernel.org/r/20260721-balki-isc-prefix-fixes-v1-v3-0-ffe10640a2d9@microchip.com

Changes in v3:
- Rewrite the WB offset/gain register writes with FIELD_PREP() (Eugen). No
  functional change; verified on SAMA7G5-EK.
- Collect Eugen's Reviewed-by on the PFE_CFG0 and macro-typo patches.
- Link to v2: https://lore.kernel.org/r/20260629-balki-isc-prefix-fixes-v1-v2-0-3b120cc3742f@microchip.com

Changes in v2:
- Squash the stop and start-error histogram/AWB-flush patches into one (Eugen).
- Store pfe_cfg0_bps unshifted, apply with FIELD_PREP() at the write (Eugen).
- Skip the WB register writes during the stop window too (isc->stop check).
- New patch: fix the ISC_PFG_CFG0_BPS macro name typo.
- Add Eugen's Reviewed-by on the IRQ-sync patch.
- Link to v1: https://lore.kernel.org/r/20260616-balki-isc-prefix-fixes-v1-v1-0-b23677fc5ab6@microchip.com

---
Balakrishnan Sambath (10):
      media: microchip-isc: fix awb_mutex and lock lifecycle
      media: microchip-isc: take a reference on the parsed endpoints
      media: microchip-isc: synchronize the IRQ before disabling clocks on stop
      media: microchip-isc: disable histogram and flush AWB work on teardown
      media: microchip-isc: do not touch WB registers when not streaming
      media: microchip-isc: store the unshifted PFE_CFG0 BPS value
      media: microchip-isc: fix ISC_PFG_CFG0_BPS macro name typo
      media: microchip-isc: fix PM runtime leak in AWB work handler
      media: microchip-isc: fix SBGGR10 Bayer pattern
      media: microchip-isc: fix WB offset and gain register field masking

 .../media/platform/microchip/microchip-isc-base.c  | 78 ++++++++++++++--------
 .../media/platform/microchip/microchip-isc-regs.h  | 16 +++--
 drivers/media/platform/microchip/microchip-isc.h   |  5 +-
 .../platform/microchip/microchip-sama5d2-isc.c     | 49 +++++++++-----
 .../platform/microchip/microchip-sama7g5-isc.c     | 49 +++++++++-----
 5 files changed, 130 insertions(+), 67 deletions(-)
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base-commit: 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b
change-id: 20260615-balki-isc-prefix-fixes-v1-c8c44224caa1

Best regards,
-- 
Balakrishnan Sambath <[email protected]>