diff options
| author | Peter Chen <peter.chen@nxp.com> | 2019-11-11 14:28:33 +0800 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@nxp.com> | 2019-11-25 15:57:26 +0800 |
| commit | 83e2195664e1079efad2573f44f4310716038ccd (patch) | |
| tree | 05d4b1cbba7148e25a523a050a20010a0e0d160b /Documentation/ABI | |
| parent | 9ff5b5eacdaa5785371e2f2b1132558e7d7245e7 (diff) | |
Doc: ABI: add usb charger uevent
When the USB charger is inserted or removed, the users could get
USB charger state and type through the uevent.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/usb-charger-uevent | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/usb-charger-uevent b/Documentation/ABI/testing/usb-charger-uevent new file mode 100644 index 000000000000..93ffd3a54a7f --- /dev/null +++ b/Documentation/ABI/testing/usb-charger-uevent @@ -0,0 +1,45 @@ +What: Raise a uevent when a USB charger is inserted or removed +Date: 2019-11-11 +KernelVersion: 5.5 +Contact: linux-usb@vger.kernel.org +Description: There are two USB charger states: + USB_CHARGER_ABSENT + USB_CHARGER_PRESENT + There are five USB charger types: + USB_CHARGER_UNKNOWN_TYPE + USB_CHARGER_SDP_TYPE + USB_CHARGER_CDP_TYPE + USB_CHARGER_DCP_TYPE + USB_CHARGER_ACA_TYPE + + Here are two examples taken using udevadm monitor -p when + USB charger is online: + UDEV [227.425096] change /devices/soc0/usbphynop1 (platform) + ACTION=change + DEVPATH=/devices/soc0/usbphynop1 + DRIVER=usb_phy_generic + MODALIAS=of:Nusbphynop1T(null)Cusb-nop-xceiv + OF_COMPATIBLE_0=usb-nop-xceiv + OF_COMPATIBLE_N=1 + OF_FULLNAME=/usbphynop1 + OF_NAME=usbphynop1 + SEQNUM=2493 + SUBSYSTEM=platform + USB_CHARGER_STATE=USB_CHARGER_PRESENT + USB_CHARGER_TYPE=USB_CHARGER_SDP_TYPE + USEC_INITIALIZED=227422826 + + USB charger is offline: + KERNEL[229.533933] change /devices/soc0/usbphynop1 (platform) + ACTION=change + DEVPATH=/devices/soc0/usbphynop1 + DRIVER=usb_phy_generic + MODALIAS=of:Nusbphynop1T(null)Cusb-nop-xceiv + OF_COMPATIBLE_0=usb-nop-xceiv + OF_COMPATIBLE_N=1 + OF_FULLNAME=/usbphynop1 + OF_NAME=usbphynop1 + SEQNUM=2494 + SUBSYSTEM=platform + USB_CHARGER_STATE=USB_CHARGER_ABSENT + USB_CHARGER_TYPE=USB_CHARGER_UNKNOWN_TYPE |