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[v2,0/5] Add support for tsens controller reinit via trustzone

Message ID 20220724122424.2509021-1-bhupesh.sharma@linaro.org
Headers show
Series Add support for tsens controller reinit via trustzone | expand

Message

Bhupesh Sharma July 24, 2022, 12:24 p.m. UTC 
Changes since v1:
-----------------
- v1 can be viewed here: https://lore.kernel.org/linux-arm-msm/20220701145815.2037993-1-bhupesh.sharma@linaro.org/
- Addressed several comments from Bjorn regarding locking, serialization
  etc received on v1.
- Addressed Konrad's concerns about the tsens controller found on sm6375
  SoC which seems to start in a bad state or is disabled when entering
  the linux world.
- This series would depend on sm6375 tsens controller changes being
  added by Konrad. It is based on linux-next (master branch) tip.

Some versions of Qualcomm tsens controller might enter a
'bad state' causing sensor temperatures/interrupts status
to be in an 'invalid' state.

It is recommended to re-initialize the tsens controller
via trustzone (secure registers) using scm call(s) when that
happens.

This patchset adds the support for the same.

Cc: bjorn.andersson@linaro.org
Cc: Amit Kucheria <amitk@kernel.org>
Cc: Thara Gopinath <thara.gopinath@gmail.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-arm-msm@vger.kernel.org

Bhupesh Sharma (5):
  firmware: qcom: scm: Add support for tsens reinit workaround
  thermal: qcom: tsens: Add hooks for supplying platform specific reinit
    quirks
  thermal: qcom: tsens: Add driver support for re-initialization quirk
  thermal: qcom: tsens: Add reinit quirk support for tsens v2
    controllers
  thermal: qcom: tsens: Add reinit quirk support for sm6375 controller

 drivers/firmware/qcom_scm.c     |  15 +++
 drivers/firmware/qcom_scm.h     |   4 +
 drivers/thermal/qcom/tsens-v2.c |  15 +++
 drivers/thermal/qcom/tsens.c    | 213 ++++++++++++++++++++++++++++++++
 drivers/thermal/qcom/tsens.h    |  18 ++-
 include/linux/qcom_scm.h        |   2 +
 6 files changed, 266 insertions(+), 1 deletion(-)