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SubjectRe: [PATCH RESEND] media: uvcvideo: Disable autosuspend for Insta360 Link
Hi Ricardo,

Thank you for the patch.

On Fri, Dec 02, 2022 at 05:48:52PM +0100, Ricardo Ribalda wrote:
> When the device suspends, it keeps power-cycling.
>
> The user notices it because the LED constanct oscillate between
> blue (ready) and no LED (off).
>
> <6>[95202.128542] usb 3-3-port4: attempt power cycle
> <6>[95206.070120] usb 3-3.4: new high-speed USB device number 49 using xhci_hcd
> <6>[95206.212027] usb 3-3.4: New USB device found, idVendor=2e1a, idProduct=4c01, bcdDevice= 2.00
> <6>[95206.212044] usb 3-3.4: New USB device strings: Mfr=1, Product=2, SerialNumber=<Serial: 1>
> <6>[95206.212050] usb 3-3.4: Product: Insta360 Link
> <6>[95206.212075] usb 3-3.4: Manufacturer: Amba
> <7>[95206.214862] usb 3-3.4: GPIO lookup for consumer privacy
> <7>[95206.214866] usb 3-3.4: using lookup tables for GPIO lookup
> <7>[95206.214869] usb 3-3.4: No GPIO consumer privacy found
> <6>[95206.214871] usb 3-3.4: Found UVC 1.10 device Insta360 Link (2e1a:4c01)
> <3>[95206.217113] usb 3-3.4: Failed to query (GET_INFO) UVC control 14 on unit 1: -32 (exp. 1).
> <3>[95206.217733] usb 3-3.4: Failed to query (GET_INFO) UVC control 16 on unit 1: -32 (exp. 1).
> <4>[95206.223544] usb 3-3.4: Warning! Unlikely big volume range (=32767), cval->res is probably wrong.
> <4>[95206.223554] usb 3-3.4: [9] FU [Mic Capture Volume] ch = 1, val = -32768/-1/1
> <6>[95210.698990] usb 3-3.4: USB disconnect, device number 49
> <6>[95211.963090] usb 3-3.4: new high-speed USB device number 50 using xhci_hcd
> <6>[95212.657061] usb 3-3.4: new full-speed USB device number 51 using xhci_hcd
> <3>[95212.783119] usb 3-3.4: device descriptor read/64, error -32
> <3>[95213.015076] usb 3-3.4: device descriptor read/64, error -32
> <6>[95213.120358] usb 3-3-port4: attempt power cycle
>
> Bus 001 Device 009: ID 2e1a:4c01 Amba Insta360 Link
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 239 Miscellaneous Device
> bDeviceSubClass 2
> bDeviceProtocol 1 Interface Association
> bMaxPacketSize0 64
> idVendor 0x2e1a
> idProduct 0x4c01
> bcdDevice 2.00
> iManufacturer 1 Amba
> iProduct 2 Insta360 Link
> iSerial 0
> bNumConfigurations 1
>
> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
> ---
> media: uvcvideo: Disable autosuspend for Insta360
>
> The device does not handle properly the USB suspend and makes it barely usable.

Isn't this best handled with a quirk in the USB core ? Autosuspend is a
device feature, not an interface feature, so if the USB sound driver is
loaded but uvcvideo isn't, the kernel may still attempt to autosuspend
the device.

> To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> To: Mauro Carvalho Chehab <mchehab@kernel.org>
> Cc: linux-media@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> ---
> drivers/media/usb/uvc/uvc_driver.c | 13 ++++++++++++-
> drivers/media/usb/uvc/uvcvideo.h | 1 +
> 2 files changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
> index 215fb483efb0..ad95c7599863 100644
> --- a/drivers/media/usb/uvc/uvc_driver.c
> +++ b/drivers/media/usb/uvc/uvc_driver.c
> @@ -2223,7 +2223,9 @@ static int uvc_probe(struct usb_interface *intf,
> }
>
> uvc_dbg(dev, PROBE, "UVC device initialized\n");
> - usb_enable_autosuspend(udev);
> + if (!(dev->quirks & UVC_QUIRK_DISABLE_AUTOSUSPEND))
> + usb_enable_autosuspend(udev);
> +
> return 0;
>
> error:
> @@ -2967,6 +2969,15 @@ static const struct usb_device_id uvc_ids[] = {
> .bInterfaceSubClass = 1,
> .bInterfaceProtocol = 0,
> .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
> + /* Insta360 Link */
> + { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
> + | USB_DEVICE_ID_MATCH_INT_INFO,
> + .idVendor = 0x2e1a,
> + .idProduct = 0x4c01,
> + .bInterfaceClass = USB_CLASS_VIDEO,
> + .bInterfaceSubClass = 1,
> + .bInterfaceProtocol = 0,
> + .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_DISABLE_AUTOSUSPEND) },
> /* GEO Semiconductor GC6500 */
> { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
> | USB_DEVICE_ID_MATCH_INT_INFO,
> diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> index df93db259312..47c86c7c6346 100644
> --- a/drivers/media/usb/uvc/uvcvideo.h
> +++ b/drivers/media/usb/uvc/uvcvideo.h
> @@ -74,6 +74,7 @@
> #define UVC_QUIRK_RESTORE_CTRLS_ON_INIT 0x00000400
> #define UVC_QUIRK_FORCE_Y8 0x00000800
> #define UVC_QUIRK_FORCE_BPP 0x00001000
> +#define UVC_QUIRK_DISABLE_AUTOSUSPEND 0x00002000
>
> /* Format flags */
> #define UVC_FMT_FLAG_COMPRESSED 0x00000001
>
> ---
> base-commit: 23758867219c8d84c8363316e6dd2f9fd7ae3049
> change-id: 20221101-instal-9a77ba1cc448

--
Regards,

Laurent Pinchart

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