Messages in this thread Patch in this message | | | From | Paul Kocialkowski <> | Subject | [PATCH] usb: musb: Support gadget mode when the port is set to dual role | Date | Wed, 28 Mar 2018 23:52:13 +0200 |
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This allows dual-role ports to be reported as having gadget mode by the musb_has_gadget helper. This is required to enable MUSB at all with MUSB glue layers that set the port mode to MUSB_PORT_MODE_DUAL_ROLE at init.
Most notably, this allows calling musb_start when needed in the virtual MUSB root HUB, regardless of whether the current mode should be gadget or host.
This fixes USB OTG on Allwinner devices that I could test it with, mainly A20 devices.
Signed-off-by: Paul Kocialkowski <contact@paulk.fr> --- drivers/usb/musb/musb_virthub.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index 5165d2b07ade..8fd5c5f86e82 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -249,7 +249,8 @@ static int musb_has_gadget(struct musb *musb) #ifdef CONFIG_USB_MUSB_HOST return 1; #else - return musb->port_mode == MUSB_PORT_MODE_HOST; + return musb->port_mode == MUSB_PORT_MODE_HOST || + musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE; #endif } -- 2.16.2
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