| Message ID | 1578994738-8872-2-git-send-email-peter.chen@nxp.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v3,1/2] usb: phy: show USB charger type for user | expand |
On Tue, Jan 14, 2020 at 05:38:58PM +0800, Peter Chen wrote: > 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> > --- > Changes for v3: > - Change kernel version for 5.6, and delete the kernel printk time > > Documentation/ABI/testing/usb-charger-uevent | 45 ++++++++++++++++++++ > 1 file changed, 45 insertions(+) > create mode 100644 Documentation/ABI/testing/usb-charger-uevent > > diff --git a/Documentation/ABI/testing/usb-charger-uevent b/Documentation/ABI/testing/usb-charger-uevent > new file mode 100644 > index 000000000000..94ab16768e49 > --- /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: 2020-01-14 > +KernelVersion: 5.6 > +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 Any explaination for what these different types really are? What is a "CDP"? "ACA"? where would one find that information out? thanks, greg k-h
On 20-01-14 10:48:13, Greg KH wrote: > On Tue, Jan 14, 2020 at 05:38:58PM +0800, Peter Chen wrote: > > 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> > > --- > > Changes for v3: > > - Change kernel version for 5.6, and delete the kernel printk time > > > > Documentation/ABI/testing/usb-charger-uevent | 45 ++++++++++++++++++++ > > 1 file changed, 45 insertions(+) > > create mode 100644 Documentation/ABI/testing/usb-charger-uevent > > > > diff --git a/Documentation/ABI/testing/usb-charger-uevent b/Documentation/ABI/testing/usb-charger-uevent > > new file mode 100644 > > index 000000000000..94ab16768e49 > > --- /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: 2020-01-14 > > +KernelVersion: 5.6 > > +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 > > Any explaination for what these different types really are? What is a > "CDP"? "ACA"? where would one find that information out? I will add explanation for it, thanks.
diff --git a/Documentation/ABI/testing/usb-charger-uevent b/Documentation/ABI/testing/usb-charger-uevent new file mode 100644 index 000000000000..94ab16768e49 --- /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: 2020-01-14 +KernelVersion: 5.6 +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 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 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
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> --- Changes for v3: - Change kernel version for 5.6, and delete the kernel printk time Documentation/ABI/testing/usb-charger-uevent | 45 ++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/ABI/testing/usb-charger-uevent