Logitech Rally Bar devices, despite behaving as UVC cameras, have a
different power management system that the other cameras from Logitech.
USB_QUIRK_RESET_RESUME is applied to all the UVC cameras from Logitech
at the usb core. Unfortunately, USB_QUIRK_RESET_RESUME causes undesired
USB disconnects in the Rally Bar that make them completely unusable.
There is an open discussion about if we should fix this in the core or
add a quirk in the UVC driver. In order to enable this hardware, let's
land this patch first, and we can revert it later if there is a
different conclusion.
Fixes: e387ef5c47dd ("usb: Add USB_QUIRK_RESET_RESUME for all Logitech UVC webcams")
Cc: <stable@xxxxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Cc: Oliver Neukum <oneukum@xxxxxxxx>
Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Devinder Khroad <dkhroad@xxxxxxxxxxxx>
Reviewed-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
---
Tested with a Rallybar Mini with an Acer Chromebook Spin 513
---
Changes in v5:
- Update commit message to describe that this is a temp solution.
- Link to v4: https://lore.kernel.org/r/20240108-rallybar-v4-1-a7450641e41b@xxxxxxxxxxxx
Changes in v4:
- Include Logi Rally Bar Huddle (Thanks Kyle!)
- Link to v3: https://lore.kernel.org/r/20240102-rallybar-v3-1-0ab197ce4aa2@xxxxxxxxxxxx
Changes in v3:
- Move quirk to uvc driver
- Link to v2: https://lore.kernel.org/r/20231222-rallybar-v2-1-5849d62a9514@xxxxxxxxxxxx
Changes in v2:
- Add Fixes tag
- Add UVC maintainer as Cc
- Link to v1: https://lore.kernel.org/r/20231222-rallybar-v1-1-82b2a4d3106f@xxxxxxxxxxxx
---
drivers/media/usb/uvc/uvc_driver.c | 30 ++++++++++++++++++++++++++++++
drivers/media/usb/uvc/uvcvideo.h | 1 +
2 files changed, 31 insertions(+)
diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 08fcd2ffa727b..9663bcac68438 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -14,6 +14,7 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/usb.h>
+#include <linux/usb/quirks.h>
#include <linux/usb/uvc.h>
#include <linux/videodev2.h>
#include <linux/vmalloc.h>
@@ -2233,6 +2234,8 @@ static int uvc_probe(struct usb_interface *intf,
}
uvc_dbg(dev, PROBE, "UVC device initialized\n");
+ if (dev->quirks & UVC_QUIRK_FORCE_RESUME)
+ udev->quirks &= ~USB_QUIRK_RESET_RESUME;
usb_enable_autosuspend(udev);
return 0;
@@ -2574,6 +2577,33 @@ static const struct usb_device_id uvc_ids[] = {
.bInterfaceSubClass = 1,
.bInterfaceProtocol = 0,
.driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) },
+ /* Logitech Rally Bar Huddle */
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
+ | USB_DEVICE_ID_MATCH_INT_INFO,
+ .idVendor = 0x046d,
+ .idProduct = 0x087c,
+ .bInterfaceClass = USB_CLASS_VIDEO,
+ .bInterfaceSubClass = 1,
+ .bInterfaceProtocol = 0,
+ .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_RESUME) },
+ /* Logitech Rally Bar */
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
+ | USB_DEVICE_ID_MATCH_INT_INFO,
+ .idVendor = 0x046d,
+ .idProduct = 0x089b,
+ .bInterfaceClass = USB_CLASS_VIDEO,
+ .bInterfaceSubClass = 1,
+ .bInterfaceProtocol = 0,
+ .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_RESUME) },
+ /* Logitech Rally Bar Mini */
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
+ | USB_DEVICE_ID_MATCH_INT_INFO,
+ .idVendor = 0x046d,
+ .idProduct = 0x08d3,
+ .bInterfaceClass = USB_CLASS_VIDEO,
+ .bInterfaceSubClass = 1,
+ .bInterfaceProtocol = 0,
+ .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_RESUME) },
/* Chicony CNF7129 (Asus EEE 100HE) */
{ .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 6fb0a78b1b009..fa59a21d2a289 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -73,6 +73,7 @@
#define UVC_QUIRK_FORCE_Y8 0x00000800
#define UVC_QUIRK_FORCE_BPP 0x00001000
#define UVC_QUIRK_WAKE_AUTOSUSPEND 0x00002000
+#define UVC_QUIRK_FORCE_RESUME 0x00004000
/* Format flags */
#define UVC_FMT_FLAG_COMPRESSED 0x00000001
---
base-commit: c0f65a7c112b3cfa691cead54bcf24d6cc2182b5
change-id: 20231222-rallybar-19ce0c64d5e6
Best regards,
--
Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
