USB: add new speed value to USB debugfs

[PATCH] USB: add new speed value to USB debugfs

Posted by Dingyan Li 2 years, 4 months ago

Current max speed supported in USB debugfs is 10000.
Since USB 3.2 GEN_2x2 has reached 20000, it's better
to add it. The idea is borrowed from USB sysfs, with
a combination of USB_SPEED_SUPER_PLUS and
USB_SSP_GEN_2x2, the actual speed should be 20000.

Signed-off-by: Dingyan Li <18500469033@163.com>
---
 drivers/usb/core/devices.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index a247da73f34d..78ebcb657dce 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -429,7 +429,11 @@ static ssize_t usb_device_dump(char __user **buffer, size_t *nbytes,
 	case USB_SPEED_SUPER:
 		speed = "5000"; break;
 	case USB_SPEED_SUPER_PLUS:
-		speed = "10000"; break;
+		if (usbdev->ssp_rate == USB_SSP_GEN_2x2)
+			speed = "20000";
+		else
+			speed = "10000";
+		break;
 	default:
 		speed = "??";
 	}
-- 
2.25.1

Re:[PATCH] USB: add new speed value to USB debugfs

Posted by Dingyan Li 2 years, 3 months ago

At 2023-08-18 23:35:09, "Dingyan Li" <18500469033@163.com> wrote:
>Current max speed supported in USB debugfs is 10000.
>Since USB 3.2 GEN_2x2 has reached 20000, it's better
>to add it. The idea is borrowed from USB sysfs, with
>a combination of USB_SPEED_SUPER_PLUS and
>USB_SSP_GEN_2x2, the actual speed should be 20000.
>
>Signed-off-by: Dingyan Li <18500469033@163.com>
>---
> drivers/usb/core/devices.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
>index a247da73f34d..78ebcb657dce 100644
>--- a/drivers/usb/core/devices.c
>+++ b/drivers/usb/core/devices.c
>@@ -429,7 +429,11 @@ static ssize_t usb_device_dump(char __user **buffer, size_t *nbytes,
> 	case USB_SPEED_SUPER:
> 		speed = "5000"; break;
> 	case USB_SPEED_SUPER_PLUS:
>-		speed = "10000"; break;
>+		if (usbdev->ssp_rate == USB_SSP_GEN_2x2)
>+			speed = "20000";
>+		else
>+			speed = "10000";
>+		break;
> 	default:
> 		speed = "??";
> 	}
>-- 
>2.25.1

Please ignore this patch, which will be covered in another patch.
Sorry for the inconvenience.

Regards,
Dingyan