This patch from Claudio S. Matsuoka adds a new quirk to make the Syntek
174f:5212 work.
>From 79775881893806a3aab141b278cf4039673121d7 Mon Sep 17 00:00:00 2001
From: Claudio Matsuoka <[EMAIL PROTECTED]>
Date: Thu, 27 Dec 2007 13:10:14 -0200
Subject: [PATCH] Add quirk for Syntek 174f:5212 camera
The Syntek 174f:5212 UVC camera in HP Spartan laptops fail to synchronize
frames, add quirk to skip synchronization.
Signed-off-by: Claudio Matsuoka <[EMAIL PROTECTED]>
---
uvc_driver.c | 12 ++++++++++++
uvc_video.c | 12 ++++++++----
uvcvideo.h | 1 +
3 files changed, 21 insertions(+), 4 deletions(-)
diff --git a/uvc_driver.c b/uvc_driver.c
index 715b4b1..49fb900 100644
--- a/uvc_driver.c
+++ b/uvc_driver.c
@@ -1530,6 +1530,7 @@ static int uvc_probe(struct usb_interface *intf,
dev->intf = usb_get_intf(intf);
dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
dev->quirks = id->driver_info;
+ dev->udev->quirks = id->driver_info;
/* Parse the Video Class control descriptor */
if (uvc_parse_control(dev) < 0) {
@@ -1653,6 +1654,17 @@ static int uvc_resume(struct usb_interface *intf)
* though they are compliant.
*/
static struct usb_device_id uvc_ids[] = {
+ /* Syntek (HP Spartan) */
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
+ | USB_DEVICE_ID_MATCH_INT_INFO,
+ .idVendor = 0x174f,
+ .idProduct = 0x5212,
+ .bInterfaceClass = USB_CLASS_VIDEO,
+ .bInterfaceSubClass = 1,
+ .bInterfaceProtocol = 0,
+ .driver_info = UVC_QUIRK_PROBE_MINMAX
+ | UVC_QUIRK_DONT_SYNCHRONIZE
+ },
/* ALi M5606 (Clevo M540SR) */
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
| USB_DEVICE_ID_MATCH_INT_INFO,
diff --git a/uvc_video.c b/uvc_video.c
index 60e1507..dde1469 100644
--- a/uvc_video.c
+++ b/uvc_video.c
@@ -266,7 +266,8 @@ done:
* uvc_video_decode_end will never be called with a NULL buffer.
*/
static int uvc_video_decode_start(struct uvc_video_queue *queue,
- struct uvc_buffer *buf, const __u8 *data, int len)
+ struct uvc_buffer *buf, const __u8 *data, int len,
+ const __u32 quirks)
{
__u8 fid;
@@ -300,7 +301,8 @@ static int uvc_video_decode_start(struct uvc_video_queue
*queue,
* frame will always be in sync.
*/
if (buf->state != UVC_BUF_STATE_ACTIVE) {
- if (fid == queue->last_fid) {
+ if (~quirks & UVC_QUIRK_DONT_SYNCHRONIZE &&
+ fid == queue->last_fid) {
uvc_trace(UVC_TRACE_FRAME, "Dropping payload (out of "
"sync).\n");
return -ENODATA;
@@ -396,7 +398,8 @@ static void uvc_video_decode_isoc(struct urb *urb,
mem = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
do {
ret = uvc_video_decode_start(queue, buf, mem,
- urb->iso_frame_desc[i].actual_length);
+ urb->iso_frame_desc[i].actual_length,
+ urb->dev->quirks);
if (ret == -EAGAIN)
buf = uvc_queue_next_buffer(queue, buf);
} while (ret == -EAGAIN);
@@ -432,7 +435,8 @@ static void uvc_video_decode_bulk(struct urb *urb,
*/
if (queue->bulk.header_size == -1) {
do {
- ret = uvc_video_decode_start(queue, buf, mem, len);
+ ret = uvc_video_decode_start(queue, buf, mem, len,
+ urb->dev->quirks);
if (ret == -EAGAIN)
buf = uvc_queue_next_buffer(queue, buf);
} while (ret == -EAGAIN);
diff --git a/uvcvideo.h b/uvcvideo.h
index 84ef9f4..6545951 100644
--- a/uvcvideo.h
+++ b/uvcvideo.h
@@ -312,6 +312,7 @@ struct uvc_xu_control {
#define UVC_QUIRK_PROBE_MINMAX 0x00000002
#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004
#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008
+#define UVC_QUIRK_DONT_SYNCHRONIZE 0x00000010
/* Format flags */
#define UVC_FMT_FLAG_COMPRESSED 0x00000001
--
1.5.2.5
--
[]'s
Herton
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