linux-kernel - [PATCH v4 2/2] usb: musb: mediatek: Expose role-switch control to userspace

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Date:   Tue, 31 Aug 2021 00:59:03 +0900
From:   Sungbo Eo <mans0n@...ani.run>
To:     linux-mediatek@...ts.infradead.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Bin Liu <b-liu@...com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Frank Wunderlich <frank-w@...lic-files.de>,
        devicetree@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Sungbo Eo <mans0n@...ani.run>
Subject: [PATCH v4 2/2] usb: musb: mediatek: Expose role-switch control to userspace

The allow_userspace_control flag enables manual role-switch from userspace.
Turn this feature on like several other USB DRD controller drivers.

Signed-off-by: Sungbo Eo <mans0n@...ani.run>
Tested-by: Frank Wunderlich <frank-w@...lic-files.de>
---
 drivers/usb/musb/mediatek.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/musb/mediatek.c b/drivers/usb/musb/mediatek.c
index 6b92d037d8fc..f5d97eb84cb5 100644
--- a/drivers/usb/musb/mediatek.c
+++ b/drivers/usb/musb/mediatek.c
@@ -185,6 +185,7 @@ static int mtk_otg_switch_init(struct mtk_glue *glue)
 
 	role_sx_desc.set = musb_usb_role_sx_set;
 	role_sx_desc.get = musb_usb_role_sx_get;
+	role_sx_desc.allow_userspace_control = true;
 	role_sx_desc.fwnode = dev_fwnode(glue->dev);
 	role_sx_desc.driver_data = glue;
 	glue->role_sw = usb_role_switch_register(glue->dev, &role_sx_desc);
-- 
2.33.0