linux-kernel - [PATCH 1/2] extcon: Add new EXTCON_CHG_USB

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Date:   Sat,  7 Jan 2017 05:40:39 +0900
From:   chanwoo@...nel.org
To:     linux-kernel@...r.kernel.org
Cc:     cw00.choi@...sung.com, myungjoo.ham@...sung.com
Subject: [PATCH 1/2] extcon: Add new EXTCON_CHG_USB_PD type for USB Power Delivery

From: Chanwoo Choi <cw00.choi@...sung.com>

This patch adds the new EXTCON_CHG_USB_PD for USB PD (Power Delivery)[1].
The USB Power Delivery specification specifies that USB cable provides
the increased power more than 7.5W to device with larger power demand.
The EXTCON_CHG_USB_PD has the EXTCON_TYPE_CHG and EXTCON_TYPE_USB type.

[1] https://en.wikipedia.org/wiki/USB#PD

Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
---
 drivers/extcon/extcon.c | 5 +++++
 include/linux/extcon.h  | 1 +
 2 files changed, 6 insertions(+)

diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index 591582b..768e367 100644
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -99,6 +99,11 @@ struct __extcon_info {
 		.id = EXTCON_CHG_WPT,
 		.name = "WPT",
 	},
+	[EXTCON_CHG_USB_PD] = {
+		.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+		.id = EXTCON_CHG_USB_PD,
+		.name = "PD",
+	},
 
 	/* Jack external connector */
 	[EXTCON_JACK_MICROPHONE] = {
diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index 242157c..7010fb0 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -65,6 +65,7 @@
 #define EXTCON_CHG_USB_FAST	9
 #define EXTCON_CHG_USB_SLOW	10
 #define EXTCON_CHG_WPT		11	/* Wireless Power Transfer */
+#define EXTCON_CHG_USB_PD	12	/* USB Power Delivery */
 
 /* Jack external connector */
 #define EXTCON_JACK_MICROPHONE	20
-- 
1.9.1