[PATCH v3 0/4] Add support for tsens controller reinit via trustzone

From: Bhupesh Sharma <bhupesh.sharma@linaro.org>
To: linux-pm@vger.kernel.org
Cc: bhupesh.sharma@linaro.org, bhupesh.linux@gmail.com,
	linux-kernel@vger.kernel.org, bjorn.andersson@linaro.org,
	konrad.dybcio@somainline.org, linux-arm-msm@vger.kernel.org,
	daniel.lezcano@linaro.org, robh+dt@kernel.org, rafael@kernel.org,
	Amit Kucheria <amitk@kernel.org>,
	Thara Gopinath <thara.gopinath@gmail.com>
Subject: [PATCH v3 0/4] Add support for tsens controller reinit via trustzone
Date: Thu,  4 Aug 2022 11:16:34 +0530	[thread overview]
Message-ID: <20220804054638.3197294-1-bhupesh.sharma@linaro.org> (raw)

Changes since v2:
-----------------
- v2 can be viewed here: https://lore.kernel.org/linux-arm-msm/20220724122424.2509021-1-bhupesh.sharma@linaro.org/
- Dropped sm6375 specific patch from v3, as suggested by Konrad.
- Rebased on latest linux-next (master branch) tip.

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 (4):
  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

 drivers/firmware/qcom_scm.c     |  15 +++
 drivers/firmware/qcom_scm.h     |   4 +
 drivers/thermal/qcom/tsens-v2.c |  15 +++
 drivers/thermal/qcom/tsens.c    | 200 ++++++++++++++++++++++++++++++++
 drivers/thermal/qcom/tsens.h    |  18 ++-
 include/linux/qcom_scm.h        |   2 +
 6 files changed, 253 insertions(+), 1 deletion(-)

-- 
2.35.3