linux-kernel - [PATCH RESEND v2 1/2] media: uvcvideo: Limit power line control for Acer EasyCamera

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Message-Id: <20221101-easycam-v2-1-ffe3e3a152df@chromium.org>
Date:   Fri, 02 Dec 2022 17:45:06 +0100
From:   Ricardo Ribalda <ribalda@...omium.org>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Sergey Senozhatsky <senozhatsky@...omium.org>,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        Ricardo Ribalda <ribalda@...omium.org>
Subject: [PATCH RESEND v2 1/2] media: uvcvideo: Limit power line control for
 Acer EasyCamera

The device does not implement the power line control correctly. Add a
corresponding control mapping override.

Bus 003 Device 002: ID 5986:1180 Acer, Inc EasyCamera
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  idVendor           0x5986 Acer, Inc
  idProduct          0x1180
  bcdDevice           56.04
  iManufacturer           3 Bison
  iProduct                1 EasyCamera
  iSerial                 2
  bNumConfigurations      1

Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@...omium.org>
---
 drivers/media/usb/uvc/uvc_driver.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 215fb483efb0..cca3012c8912 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -2994,6 +2994,15 @@ static const struct usb_device_id uvc_ids[] = {
 	  .bInterfaceSubClass	= 1,
 	  .bInterfaceProtocol	= 0,
 	  .driver_info		= (kernel_ulong_t)&uvc_ctrl_power_line_limited },
+	/* Acer EasyCamera */
+	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
+				| USB_DEVICE_ID_MATCH_INT_INFO,
+	  .idVendor		= 0x5986,
+	  .idProduct		= 0x1180,
+	  .bInterfaceClass	= USB_CLASS_VIDEO,
+	  .bInterfaceSubClass	= 1,
+	  .bInterfaceProtocol	= 0,
+	  .driver_info		= (kernel_ulong_t)&uvc_ctrl_power_line_limited },
 	/* Intel RealSense D4M */
 	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
 				| USB_DEVICE_ID_MATCH_INT_INFO,

-- 
2.39.0.rc0.267.gcb52ba06e7-goog-b4-0.11.0-dev-696ae