Hi All,
Here is v3 of my patch series to fix the charger setup on Xiaomi Mi Pad 2
and Lenovo Yogabook devices, as well as fix host/device mode switching.
This new version addresses various small review remarks from v2 and
contains no big changes, see the individual patch changelogs for details.
I believe that this is ready for merging now.
Since some of the later patches depend on some of the power_supply changes;
and since the Whiskey Cove MFD and cell drivers generally do not see much
changes I believe that it would be best to merge the entire series through
Sebastian's linux-power-supply tree. Wolfram has already given his ack
for merging the i2c-cht-wc patch through another tree.
Lee and Chanwoo, may we please have your Ack for merging this
entire series through Sebastian's linux-power-supply tree?
###
For more details on this series, here is some info from the v2
cover-letter:
So far almost all the kernel code surrounding the Cherry Trail Whiskey Cove
PMIC has been developed on the GPD win / pocket devices and it has various
assumption based on that. In the mean time I've learned (and gotten access
to) about 2 more designs and none of the 3 now known designs use a single
standard setup for the charger, fuel-gauge and other chips surrounding the
PMIC / charging+data USB port:
1. The GPD Win and GPD Pocket mini-laptops, these are really 2 models
but the Pocket re-uses the GPD Win's design in a different housing:
The WC PMIC is connected to a TI BQ24292i charger, paired with
a Maxim MAX17047 fuelgauge + a FUSB302 USB Type-C Controller +
a PI3USB30532 USB switch, for a fully functional Type-C port.
2. The Xiaomi Mi Pad 2:
The WC PMIC is connected to a TI BQ25890 charger, paired with
a TI BQ27520 fuelgauge, using the TI BQ25890 for BC1.2 charger type
detection, for a USB-2 only Type-C port without PD.
3. The Lenovo Yoga Book YB1-X90 / Lenovo Yoga Book YB1-X91 series:
The WC PMIC is connected to a TI BQ25892 charger, paired with
a TI BQ27542 fuelgauge, using the WC PMIC for BC1.2 charger type
detection and using the BQ25892's Mediatek Pump Express+ (1.0)
Unlike what is normal on X86 this diversity in designs is not handled /
abstracted away by the ACPI tables.
This series takes care of making sure that charging and device/host mode
switching also works on the Xiaomi Mi Pad 2 and the Lenovo Yogabook.
Patches 1-13: Prepare the bq25890 power_supply driver to fully support
the Mi Pad 2 and the Yogabook. Note this includes a new
version of 2 bq25890 patches send earlier by Yauhen Kharuzhy
Patch 14: Adds the intel_cht_wc_get_model() helper
Patch 15: Uses this intel_cht_wc_get_model() value to instantiate an
i2c-client with the right type and properties for the charger
IC used on the board (instead of harcoding the GPD values)
Patches 16-20: Modify the extcon code to provide charger-detection results
to the charger driver and to take care of the Vbus boost
regulator control (for host-mode) and device/host mode
switching
I've tried to keep the power_supply patches as generic as possible while
focussing some of the special handling these boards need in the
WC PMIC MFD and cell drivers, which will only get loaded on these boards.
Regards,
Hans
Hans de Goede (17):
power: supply: core: Refactor
power_supply_set_input_current_limit_from_supplier()
power: supply: bq25890: Add a bq25890_rw_init_data() helper
power: supply: bq25890: Add support to skip reset at probe() /
remove()
power: supply: bq25890: Add support to read back the settings from the
chip
power: supply: bq25890: Enable charging on boards where we skip reset
power: supply: bq25890: Drop dev->platform_data == NULL check
power: supply: bq25890: Add bq25890_set_otg_cfg() helper
power: supply: bq25890: Add support for registering the Vbus boost
converter as a regulator
power: supply: bq25890: On the bq25892 set the IINLIM based on
external charger detection
power: supply: bq25890: Use the devm_regmap_field_bulk_alloc() helper
mfd: intel_soc_pmic_chtwc: Add cht_wc_model data to struct
intel_soc_pmic
i2c: cht-wc: Make charger i2c-client instantiation board/device-model
specific
extcon: intel-cht-wc: Use new cht_wc_model intel_soc_pmic field
extcon: intel-cht-wc: Support devs with Micro-B / USB-2 only Type-C
connectors
extcon: intel-cht-wc: Refactor cht_wc_extcon_get_charger()
extcon: intel-cht-wc: Add support for registering a power_supply
class-device
extcon: intel-cht-wc: Report RID_A for ACA adapters
Yauhen Kharuzhy (3):
power: supply: bq25890: Rename IILIM field to IINLIM
power: supply: bq25890: Reduce reported CONSTANT_CHARGE_CURRENT_MAX
for low temperatures
power: supply: bq25890: Support higher charging voltages through Pump
Express+ protocol
drivers/extcon/Kconfig | 2 +
drivers/extcon/extcon-intel-cht-wc.c | 240 ++++++++++++--
drivers/i2c/busses/i2c-cht-wc.c | 120 +++++--
drivers/mfd/intel_soc_pmic_chtwc.c | 37 +++
drivers/power/supply/bq24190_charger.c | 10 +-
drivers/power/supply/bq25890_charger.c | 396 ++++++++++++++++++-----
drivers/power/supply/power_supply_core.c | 57 ++--
include/linux/mfd/intel_soc_pmic.h | 8 +
include/linux/power/bq25890_charger.h | 15 +
include/linux/power_supply.h | 5 +-
10 files changed, 739 insertions(+), 151 deletions(-)
create mode 100644 include/linux/power/bq25890_charger.h
--
2.33.1
