linux-kernel - [RFC PATCH v1 2/3] usb: chipidea: set mode for usb phy driver

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Message-Id: <20191007124607.20618-2-igor.opaniuk@gmail.com>
Date:   Mon,  7 Oct 2019 15:46:06 +0300
From:   Igor Opaniuk <igor.opaniuk@...il.com>
To:     linux-usb@...r.kernel.org
Cc:     Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Philippe Schenker <philippe.schenker@...adex.com>,
        Stefan Agner <stefan.agner@...adex.com>,
        Max Krummenacher <max.krummenacher@...adex.com>,
        Oleksandr Suvorov <oleksandr.suvorov@...adex.com>,
        Igor Opaniuk <igor.opaniuk@...adex.com>,
        Li Jun <jun.li@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Peter Chen <Peter.Chen@....com>, linux-kernel@...r.kernel.org
Subject: [RFC PATCH v1 2/3] usb: chipidea: set mode for usb phy driver

From: Igor Opaniuk <igor.opaniuk@...adex.com>

After enters one specific role, notify usb phy driver.

Signed-off-by: Li Jun <jun.li@....com>
Signed-off-by: Igor Opaniuk <igor.opaniuk@...adex.com>
---

 drivers/usb/chipidea/ci.h | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index 6911aef500e9..a11d23910b12 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -275,9 +275,21 @@ static inline int ci_role_start(struct ci_hdrc *ci, enum ci_role role)
 		return -ENXIO;
 
 	ret = ci->roles[role]->start(ci);
-	if (!ret)
-		ci->role = role;
-	return ret;
+	if (ret)
+		return ret;
+
+	ci->role = role;
+
+	if (ci->usb_phy) {
+		if (role == CI_ROLE_HOST)
+			usb_phy_set_mode(ci->usb_phy,
+					USB_MODE_HOST);
+		else
+			usb_phy_set_mode(ci->usb_phy,
+					USB_MODE_DEVICE);
+	}
+
+	return 0;
 }
 
 static inline void ci_role_stop(struct ci_hdrc *ci)
@@ -290,6 +302,9 @@ static inline void ci_role_stop(struct ci_hdrc *ci)
 	ci->role = CI_ROLE_END;
 
 	ci->roles[role]->stop(ci);
+
+	if (ci->usb_phy)
+		usb_phy_set_mode(ci->usb_phy, USB_MODE_NONE);
 }
 
 static inline enum usb_role ci_role_to_usb_role(struct ci_hdrc *ci)
-- 
2.17.1