linux-kernel - [PATCH 2/2] extcon: usb-gpio: Update the ID pin state of USB when cable state is changed

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-id: <1432291790-4933-3-git-send-email-cw00.choi@samsung.com>
Date:	Fri, 22 May 2015 19:49:50 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	linux-kernel@...r.kernel.org
Cc:	rogerq@...com, r.baldyga@...sung.com, peter.chen@...escale.com,
	kishon@...com, balbi@...com, iivanov@...sol.com,
	cw00.choi@...sung.com, myungjoo.ham@...sung.com
Subject: [PATCH 2/2] extcon: usb-gpio: Update the ID pin state of USB when
 cable state is changed

This patch updates the ID pin state of USB when cable state is changed
by using the extcon_set_cable_line_state() function. The extcon consumer driver
can receive the changed ID pin state through registered notifier chain of
extcon consumer driver.

Cc: Roger Quadros <rogerq@...com>
Cc: Robert Baldyga <r.baldyga@...sung.com>
Cc: MyungJoo Ham <myungjoo.ham@...sung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
---
 drivers/extcon/extcon-usb-gpio.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/extcon/extcon-usb-gpio.c b/drivers/extcon/extcon-usb-gpio.c
index 14da94c..9ff3171 100644
--- a/drivers/extcon/extcon-usb-gpio.c
+++ b/drivers/extcon/extcon-usb-gpio.c
@@ -62,12 +62,18 @@ static void usb_extcon_detect_cable(struct work_struct *work)
 		 */
 		extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, false);
 		extcon_set_cable_state_(info->edev, EXTCON_USB, true);
+
+		extcon_set_cable_line_state(info->edev, EXTCON_USB,
+						EXTCON_USB_ID_HIGH);
 	} else {
 		/*
 		 * ID = 0 means USB HOST cable attached.
 		 * As we don't have event for USB peripheral cable detached,
 		 * we simulate USB peripheral detach here.
 		 */
+		extcon_set_cable_line_state(info->edev, EXTCON_USB,
+						EXTCON_USB_ID_LOW);
+
 		extcon_set_cable_state_(info->edev, EXTCON_USB, false);
 		extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, true);
 	}
-- 
1.8.5.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/