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[media] uvcvideo: Add quirk to force the Oculus DK2 IR tracker to grayscale 

This patch adds a quirk to force Y8 pixel format even if the camera reports
half-width YUYV.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Philipp Zabel 2014-08-06 17:50:49 -03:00 committed by Mauro Carvalho Chehab
parent 4daee77976
commit e1b78a3359
2 changed files with 27 additions and 1 deletions
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27
drivers/media/usb/uvc/uvc_driver.c
View File

@ -331,6 +331,7 @@ static int uvc_parse_format(struct uvc_device *dev,
struct uvc_format_desc *fmtdesc;
struct uvc_frame *frame;
const unsigned char *start = buffer;
unsigned int width_multiplier = 1;
unsigned int interval;
unsigned int i, n;
__u8 ftype;
@ -366,6 +367,20 @@ static int uvc_parse_format(struct uvc_device *dev,
}
format->bpp = buffer[21];
/* Some devices report a format that doesn't match what they
* really send.
*/
if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
if (format->fcc == V4L2_PIX_FMT_YUYV) {
strlcpy(format->name, "Greyscale 8-bit (Y8 )",
sizeof(format->name));
format->fcc = V4L2_PIX_FMT_GREY;
format->bpp = 8;
width_multiplier = 2;
}
}
if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) {
ftype = UVC_VS_FRAME_UNCOMPRESSED;
} else {
@ -474,7 +489,8 @@ static int uvc_parse_format(struct uvc_device *dev,
frame->bFrameIndex = buffer[3];
frame->bmCapabilities = buffer[4];
frame->wWidth = get_unaligned_le16(&buffer[5]);
frame->wWidth = get_unaligned_le16(&buffer[5])
* width_multiplier;
frame->wHeight = get_unaligned_le16(&buffer[7]);
frame->dwMinBitRate = get_unaligned_le32(&buffer[9]);
frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]);
@ -2504,6 +2520,15 @@ static struct usb_device_id uvc_ids[] = {
.bInterfaceProtocol = 0,
.driver_info = UVC_QUIRK_PROBE_MINMAX
| UVC_QUIRK_IGNORE_SELECTOR_UNIT },
/* Oculus VR Positional Tracker DK2 */
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
| USB_DEVICE_ID_MATCH_INT_INFO,
.idVendor = 0x2833,
.idProduct = 0x0201,
.bInterfaceClass = USB_CLASS_VIDEO,
.bInterfaceSubClass = 1,
.bInterfaceProtocol = 0,
.driver_info = UVC_QUIRK_FORCE_Y8 },
/* Generic USB Video Class */
{ USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) },
{}

1
drivers/media/usb/uvc/uvcvideo.h
View File

@ -148,6 +148,7 @@
#define UVC_QUIRK_PROBE_DEF 0x00000100
#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
#define UVC_QUIRK_RESTORE_CTRLS_ON_INIT 0x00000400
#define UVC_QUIRK_FORCE_Y8 0x00000800
/* Format flags */
#define UVC_FMT_FLAG_COMPRESSED 0x00000001