Hi,
On 7/25/2017 1:30 PM, Baolin Wang wrote: > This patch introduces the usb charger support based on usb phy that > makes an enhancement to a power driver. The basic conception of the > usb charger is that, when one usb charger is added or removed by > reporting from the extcon device state change, the usb charger will > report to power user to set the current limitation. > > Power user can register a notifiee on the usb phy by issuing > usb_register_notifier() to get notified by charger status changes > or charger current changes. Why can't we use power_supply framework for this? Power user can register usb power_supply and USB PHY driver can update charging current using - power_supply_set_property(). > we can notify what current to be drawn to power user according to > different charger type, and now we have 2 methods to get charger type. > One is get charger type from extcon subsystem, which also means the > charger state changes. Another is we can get the charger type from > USB controller detecting or PMIC detecting, and the charger state > changes should be told by issuing usb_phy_set_charger_state(). > > Signed-off-by: Baolin Wang <baolin.w...@linaro.org> > --- > drivers/usb/phy/phy.c | 272 > +++++++++++++++++++++++++++++++++++++++++++++++ > include/linux/usb/phy.h | 49 +++++++++ -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
