[PATCH v2 0/2] thermal: qcom: tsens: fix temperature handling

[Priyansh Jain]

This series fixes multiple issues in the Qualcomm TSENS thermal driver
related to temperature sampling and trip threshold handling.

Patch 1 updates the temperature read path to atomically sample the
temperature value along with its valid bit, in accordance with hardware
programming guidelines. It also implements the recommended retry and
fallback behavior to avoid incorrect readings during transient hardware
update windows.

Patch 2 widens the software trip temperature limits to match the full
hardware-supported range. This prevents repeated threshold
reprogramming and interrupt storms when devices operate beyond the
previously clamped limits on newer chipsets, while preserving behavior
for platforms operating within the original range.


v2:

- Reverted merging of the valid-bit and LAST_TEMP register field logic
  to preserve the regmap differences between TSENS versions
- Defined valid-bit support and last temperature resolution for all
  TSENS v1 and v2 feature structures
- Defined last temperature resolution for Tsens v0 feature structure
- Dropped tsens version checks in favor of valid-bit capability
- Computed masks from resolution to keep a single source of truth
- Minor code cleanups based on review feedback



Priyansh Jain (2):
  thermal: qcom: tsens: atomic temperature read with hardware-guided
    retries
  thermal: qcom: tsens: widen temperature limits to match hardware range

 drivers/thermal/qcom/tsens-v0_1.c |   1 +
 drivers/thermal/qcom/tsens-v1.c   |   4 ++
 drivers/thermal/qcom/tsens-v2.c   |  10 ++-
 drivers/thermal/qcom/tsens.c      | 114 ++++++++++++++++++++----------
 drivers/thermal/qcom/tsens.h      |   7 ++
 5 files changed, 98 insertions(+), 38 deletions(-)

-- 
2.43.0