extcon: Introduce EXTCON_PROP_DISP_HPD property (c7914e8d) · Commits · 戴 / test

EXTCON_PROP_DISP_HPD is need by display port, if the system has no hpd interrupt, this property can be used. - HPD (Hot Plug Detect) send the signal whether display device is on or off to source device. Signed-off-by:

Chris Zhong <zyw@rock-chips.com> Reviewed-by:

Guenter Roeck <linux@roeck-us.net> [cw00.choi: Add the description of HPD and full name of HPD] Signed-off-by:

Chanwoo Choi <cw00.choi@samsung.com>

include/linux/extcon.h

+12 −1

Original line number	Diff line number	Diff line
		@@ -133,9 +133,20 @@
		#define EXTCON_PROP_JACK_MAX 100
		#define EXTCON_PROP_JACK_CNT (EXTCON_PROP_JACK_MAX - EXTCON_PROP_JACK_MIN + 1)

		/*
		* Properties of EXTCON_TYPE_DISP.
		*
		* - EXTCON_PROP_DISP_HPD (Hot Plug Detect)
		* @type: integer (intval)
		* @value: 0 (no hpd) or 1 (hpd)
		* @default: 0 (no hpd)
		*
		*/
		#define EXTCON_PROP_DISP_HPD 150

		/* Properties of EXTCON_TYPE_DISP. */
		#define EXTCON_PROP_DISP_MIN 150
		#define EXTCON_PROP_DISP_MAX 150
		#define EXTCON_PROP_DISP_MAX 151
		#define EXTCON_PROP_DISP_CNT (EXTCON_PROP_DISP_MAX - EXTCON_PROP_DISP_MIN + 1)

		/*

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