[PATCH v2 2/2] extcon: usb-gpio: Update the ID pin state of USB when cable state is changed

From: Chanwoo Choi
Date: Wed May 27 2015 - 08:15:33 EST


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@xxxxxx>
Cc: Robert Baldyga <r.baldyga@xxxxxxxxxxx>
Cc: MyungJoo Ham <myungjoo.ham@xxxxxxxxxxx>
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
---
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);
}
--
2.2.0.GIT

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