[RESEND:,v5,0/4] Qualcomm labibb regulator driver

Message

Sumit Semwal July 10, 2020, 5:29 a.m. UTC

This series adds a driver for LAB/IBB regulators found on some Qualcomm SoCs.
These regulators provide positive and/or negative boost power supplies
for LCD/LED display panels connected to the SoC.

This series adds the support for pmi8998 PMIC found in SDM845 family of SoCs.

Changes from v4:
- v4 Review comments incorporated
  - simplified the driver: removed of_get_child_by_name(); use ENABLE_CTL
    register and switch over to use the regulator_*_regmap helpers
  - improved kerneldoc
  - From the dt-bindings, removed interrupt-names, changed to dual license,
    added unevaluatedProperties: false, removed interrupt-names, since there
    is only one interrupt per node
  - Since the Short Circuit handling needs more details from QC engineers,
    drop the SC handling patch from this series, to submit it later

Changes from v3:
- Handled review comments from v3
- In core, swapped the meaning of enable_time and poll_enabled_time; so we
   wait for total enable_time delay, and poll in-between at poll_enabled_time
   interval now.
- fixed dt_bindings_check issues in dt-bindings patch.
- Cleanup of register_labibb_regulator(), and adapted to updated meaning of
   poll_enabled_time.

Changes from v2:
- Review comments from v2
- Moved the poll-to-check-enabled functionality to regulator core.
- Used more core features to simplify enable/disable functions.
- Moved the devicetree binding to yaml.
- Updated interrupt-names and simplified handling.

Changes from v1:
- Incorporated review comments from v1
- Changed from virtual-regulator based handling to individual regulator based
  handling.
- Reworked the core to merge most of enable/disable functions, combine the
  regulator_ops into one and allow for future variations.
- is_enabled() is now _really_ is_enabled()
- Simplified the SC interrupt handling - use regmap_read_poll_timeout,
  REGULATOR_EVENT_OVER_CURRENT handling and notification to clients.

Nisha Kumari (3):
  dt-bindings: regulator: Add labibb regulator
  arm64: dts: qcom: pmi8998: Add nodes for LAB and IBB regulators
  regulator: qcom: Add labibb driver

Sumit Semwal (1):
  regulator: Allow regulators to verify enabled during enable()

 .../regulator/qcom-labibb-regulator.yaml      |  70 +++++++
 arch/arm64/boot/dts/qcom/pmi8998.dtsi         |  12 ++
 drivers/regulator/Kconfig                     |  10 +
 drivers/regulator/Makefile                    |   1 +
 drivers/regulator/core.c                      |  63 ++++++-
 drivers/regulator/qcom-labibb-regulator.c     | 175 ++++++++++++++++++
 include/linux/regulator/driver.h              |   5 +
 7 files changed, 335 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/regulator/qcom-labibb-regulator.yaml
 create mode 100644 drivers/regulator/qcom-labibb-regulator.c