[PATCH] usb: gadget: enable super speed plus

[PATCH] usb: gadget: enable super speed plus

[Lorenzo Colitti]

From: "taehyun.cho" <taehyun.cho@samsung.com>

Enable Super speed plus in configfs to support USB3.1 Gen2.
This ensures that when a USB gadget is plugged in, it is
enumerated as Gen 2 and connected at 10 Gbps if the host and
cable are capable of it.

Many in-tree gadget functions (fs, midi, acm, ncm, mass_storage,
etc.) already have SuperSpeed Plus support.

Tested: plugged gadget into Linux host and saw:
[284907.385986] usb 8-2: new SuperSpeedPlus Gen 2 USB device number 3 using xhci_hcd

Signed-off-by: taehyun.cho <taehyun.cho@samsung.com>
Tested-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
---
 drivers/usb/gadget/configfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index 56051bb97349..976d3e6c3554 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -1536,7 +1536,7 @@ static const struct usb_gadget_driver configfs_driver_template = {
 	.suspend	= configfs_composite_suspend,
 	.resume		= configfs_composite_resume,
 
-	.max_speed	= USB_SPEED_SUPER,
+	.max_speed	= USB_SPEED_SUPER_PLUS,
 	.driver = {
 		.owner          = THIS_MODULE,
 		.name		= "configfs-gadget",
@@ -1576,7 +1576,7 @@ static struct config_group *gadgets_make(
 	gi->composite.unbind = configfs_do_nothing;
 	gi->composite.suspend = NULL;
 	gi->composite.resume = NULL;
-	gi->composite.max_speed = USB_SPEED_SUPER;
+	gi->composite.max_speed = USB_SPEED_SUPER_PLUS;
 
 	spin_lock_init(&gi->spinlock);
 	mutex_init(&gi->lock);
-- 
2.29.2.729.g45daf8777d-goog

Re: [PATCH] usb: gadget: enable super speed plus

[Felipe Balbi]

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Hi,

Lorenzo Colitti <lorenzo@google.com> writes:
> From: "taehyun.cho" <taehyun.cho@samsung.com>
>
> Enable Super speed plus in configfs to support USB3.1 Gen2.
> This ensures that when a USB gadget is plugged in, it is
> enumerated as Gen 2 and connected at 10 Gbps if the host and
> cable are capable of it.
>
> Many in-tree gadget functions (fs, midi, acm, ncm, mass_storage,
> etc.) already have SuperSpeed Plus support.
>
> Tested: plugged gadget into Linux host and saw:
> [284907.385986] usb 8-2: new SuperSpeedPlus Gen 2 USB device number 3 using xhci_hcd
>
> Signed-off-by: taehyun.cho <taehyun.cho@samsung.com>
> Tested-by: Lorenzo Colitti <lorenzo@google.com>
> Signed-off-by: Lorenzo Colitti <lorenzo@google.com>

Acked-by: Felipe Balbi <balbi@kernel.org>

-- 
balbi

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