linux-kernel - [PATCH v7 5/8] media: uvcvideo: Limit power line control for Chicony Easycamera

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Message-Id: <20220617103645.71560-6-ribalda@chromium.org>
Date:   Fri, 17 Jun 2022 12:36:42 +0200
From:   Ricardo Ribalda <ribalda@...omium.org>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        tfiga@...omium.org, senozhatsky@...omium.org, yunkec@...gle.com
Cc:     Ricardo Ribalda <ribalda@...omium.org>
Subject: [PATCH v7 5/8] media: uvcvideo: Limit power line control for Chicony Easycamera

Two different Easycamera devices do not implement the power line control
correctly. Add a corresponding control mapping override.

Bus 001 Device 003: ID 04f2:b6ba Chicony Electronics Co., Ltd EasyCamera
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  idVendor           0x04f2 Chicony Electronics Co., Ltd
  idProduct          0xb6ba
  bcdDevice           10.70
  iManufacturer           3 Chicony Electronics Co.,Ltd.
  iProduct                1 EasyCamera
  iSerial                 2 0001
  bNumConfigurations      1

Bus 001 Device 003: ID 04f2:b746 Chicony Electronics Co., Ltd EasyCamera
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  idVendor           0x04f2 Chicony Electronics Co., Ltd
  idProduct          0xb746
  bcdDevice           97.57
  iManufacturer           3 Chicony Electronics Co.,Ltd.
  iProduct                1 EasyCamera
  iSerial                 2 0001
  bNumConfigurations      1

Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
---
 drivers/media/usb/uvc/uvc_driver.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 4fb07084f1c0..5b8a71a9edfb 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -2819,6 +2819,24 @@ static const struct usb_device_id uvc_ids[] = {
 	  .bInterfaceSubClass	= 1,
 	  .bInterfaceProtocol	= 0,
 	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) },
+	/* Chicony EasyCamera */
+	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
+				| USB_DEVICE_ID_MATCH_INT_INFO,
+	  .idVendor		= 0x04f2,
+	  .idProduct		= 0xb6ba,
+	  .bInterfaceClass	= USB_CLASS_VIDEO,
+	  .bInterfaceSubClass	= 1,
+	  .bInterfaceProtocol	= 0,
+	  .driver_info		= (kernel_ulong_t)&uvc_ctrl_power_line_limited },
+	/* Chicony EasyCamera */
+	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
+				| USB_DEVICE_ID_MATCH_INT_INFO,
+	  .idVendor		= 0x04f2,
+	  .idProduct		= 0xb746,
+	  .bInterfaceClass	= USB_CLASS_VIDEO,
+	  .bInterfaceSubClass	= 1,
+	  .bInterfaceProtocol	= 0,
+	  .driver_info		= (kernel_ulong_t)&uvc_ctrl_power_line_limited },
 	/* Alcor Micro AU3820 (Future Boy PC USB Webcam) */
 	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
 				| USB_DEVICE_ID_MATCH_INT_INFO,
-- 
2.36.1.476.g0c4daa206d-goog