linux-kernel - [PATCH v6 0/8] thermal: tsens: Handle critical interrupts

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Date:   Mon, 24 Feb 2020 18:28:47 +0530
From:   Amit Kucheria <amit.kucheria@...aro.org>
To:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        daniel.lezcano@...aro.org, bjorn.andersson@...aro.org,
        swboyd@...omium.org, sivaa@...eaurora.org,
        Andy Gross <agross@...nel.org>
Cc:     Amit Kucheria <amit.kucheria@...durent.com>,
        linux-pm@...r.kernel.org
Subject: [PATCH v6 0/8] thermal: tsens: Handle critical interrupts

TSENS IP v2.x supports critical interrupts and v2.3+ adds watchdog support
in case the FSM is stuck. Enable support in the driver.

This series was generated on top of v5.6-rc2.

Changes since v5:¬
 - Introduce a function tsens_register_irq to handle uplow and critical
   interrupt registration and reduce code duplication
 - Clarify reason for patch 04

Changes from v4:
- Add back patch 1 from v3[*], I mistakenly didn't post it for v4.
- Remove spinlock from critical interrupt handling
- Change critical interrupt handler to fall thru watchdog bark handling to
  handle critical interrupts too

[*] https://lore.kernel.org/linux-arm-msm/77dd80eb58f0db29a03097cb442d606f810a849a.1577976221.git.amit.kucheria@linaro.org/

Changes from v3:
- Remove the DTS changes that are already queued
- Fix review comments by Bjorn
- Fixup patch description to clarify that we don't use TSENS critical
  interrupts in Linux, but need it for the watchdog support that uses the
  same HW irq line.
- Separate kernel-doc fixes into a separate patch.

Changes from v2:
- Handle old DTBs w/o critical irq in the same way as fix sent for 5.5

Changes from v1:
- Make tsens_features non-const to allow run time detection of features
- Pass tsens_sensor around as a const
- Fix a bug to release dev pointer in success path
- Address review comments from Bjorn and Stephen (thanks for the review)
- Add msm8998 and msm8996 DTSI changes for critical interrupts


Amit Kucheria (8):
  drivers: thermal: tsens: De-constify struct tsens_features
  drivers: thermal: tsens: Pass around struct tsens_sensor as a constant
  drivers: thermal: tsens: use simpler variables
  drivers: thermal: tsens: Release device in success path
  drivers: thermal: tsens: Add critical interrupt support
  drivers: thermal: tsens: Add watchdog support
  drivers: thermal: tsens: kernel-doc fixup
  drivers: thermal: tsens: Remove unnecessary irq flag

 drivers/thermal/qcom/tsens-8960.c   |   4 +-
 drivers/thermal/qcom/tsens-common.c | 185 ++++++++++++++++++++++++----
 drivers/thermal/qcom/tsens-v0_1.c   |   6 +-
 drivers/thermal/qcom/tsens-v1.c     |   6 +-
 drivers/thermal/qcom/tsens-v2.c     |  24 +++-
 drivers/thermal/qcom/tsens.c        |  63 ++++++----
 drivers/thermal/qcom/tsens.h        | 103 ++++++++++++++--
 7 files changed, 320 insertions(+), 71 deletions(-)

-- 
2.20.1