[v8,0/4] add power control in i2c and at24
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Message ID 20191213081230.23494-1-bibby.hsieh@mediatek.com
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  • add power control in i2c and at24
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Bibby Hsieh Dec. 13, 2019, 8:12 a.m. UTC
Although in the most platforms, the power of eeprom and i2c
are alway on, some platforms disable the eeprom and i2c power
in order to meet low power request.
This patch add the pm_runtime ops to control power to support
all platforms.

Changes since v7:
 - add binding describe supply property in i2c and at24.
 - move i2c bus supply control in i2c-core.
 - rebase onto v5.5-rc1

Changes since v6:
 - add back error check for devm_regulator_bulk_get()

Changes since v5:
 - remove has_supplies

Changes since v4:
 - add system sleep PM ops
 - move regulator_bulk_disable before suspend()
 - fixes error handling

Changes since v3:
 - remove redundant calling function
 - change SIMPLE_DEV_PM_OPS to SET_RUNTIME_PM_OPS
 - change supply name

Changes since v2:
 - rebase onto v5.4-rc1
 - pm_runtime_disable and regulator_bulk_disable at
   err return in probe function

Changes since v1:
 - remove redundant code
 - fixup coding style

Bibby Hsieh (4):
  dt-binding: eeprom: at24: add vcc-supply property
  dt-binding: i2c: add bus-supply property
  misc: eeprom: at24: support pm_runtime control
  i2c: core: support bus regulator controlling in adapter

 .../devicetree/bindings/eeprom/at24.yaml      |  4 ++
 Documentation/devicetree/bindings/i2c/i2c.txt |  3 +
 drivers/i2c/i2c-core-base.c                   | 66 +++++++++++++++++++
 drivers/misc/eeprom/at24.c                    | 40 +++++++++++
 include/linux/i2c.h                           |  3 +
 5 files changed, 116 insertions(+)