extcon: Add documentation for EXTCON_CHG_USB_* and EXTCON_USB_* (db622861) · Commits · 戴 / test

Current there is both "EXTCON_USB" and "EXTCON_CHG_USB_SDP" which both seem to suggest a standard downstream port. But there is no documentation describing how these relate. Thus add documentation to describe EXTCON_CHG_USB_SDP should always appear together with EXTCON_USB, and EXTCON_CHG_USB_ACA would normally appear with EXTCON_USB_HOST. Signed-off-by:

Baolin Wang <baolin.wang@linaro.org> Signed-off-by:

Chanwoo Choi <cw00.choi@samsung.com>

include/linux/extcon.h

+8 −1

Original line number	Diff line number	Diff line
		@@ -46,7 +46,14 @@
		#define EXTCON_USB 1
		#define EXTCON_USB_HOST 2

		/* Charging external connector */
		/*
		* Charging external connector
		*
		* When one SDP charger connector was reported, we should also report
		* the USB connector, which means EXTCON_CHG_USB_SDP should always
		* appear together with EXTCON_USB. The same as ACA charger connector,
		* EXTCON_CHG_USB_ACA would normally appear with EXTCON_USB_HOST.
		*/
		#define EXTCON_CHG_USB_SDP 5 /* Standard Downstream Port */
		#define EXTCON_CHG_USB_DCP 6 /* Dedicated Charging Port */
		#define EXTCON_CHG_USB_CDP 7 /* Charging Downstream Port */

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