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ralink: make dcs930 uvc camera work 

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 38054
owl
John Crispin 2013-09-19 05:57:00 +00:00
parent c0f6bf05f4
commit 08abb8822b
1 changed files with 255 additions and 0 deletions
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255
target/linux/ramips/patches-3.10/0205-uvc-add-iPassion-iP2970-support.patch Normal file
View File

@ -0,0 +1,255 @@
From be8d5b55f93b8ccb3a6b5cfb1e858a59aeca2d6c Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Thu, 19 Sep 2013 01:50:59 +0200
Subject: [PATCH] uvc: add iPassion iP2970 support
Signed-off-by: John Crispin <blogic@openwrt.org>
---
drivers/media/usb/uvc/uvc_driver.c | 12 +++++++++
drivers/media/usb/uvc/uvc_status.c | 2 ++
drivers/media/usb/uvc/uvc_v4l2.c | 1 +
drivers/media/usb/uvc/uvc_video.c | 50 +++++++++++++++++++++++++++++++-----
drivers/media/usb/uvc/uvcvideo.h | 3 +++
5 files changed, 61 insertions(+), 7 deletions(-)
Index: linux-3.10.12/drivers/media/usb/uvc/uvc_driver.c
===================================================================
--- linux-3.10.12.orig/drivers/media/usb/uvc/uvc_driver.c 2013-09-14 15:55:12.000000000 +0200
+++ linux-3.10.12/drivers/media/usb/uvc/uvc_driver.c 2013-09-19 04:30:11.825592123 +0200
@@ -2420,6 +2420,20 @@
.bInterfaceProtocol = 0,
.driver_info = UVC_QUIRK_PROBE_MINMAX
| UVC_QUIRK_IGNORE_SELECTOR_UNIT },
+
+/* iPassion iP2970 */
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
+ | USB_DEVICE_ID_MATCH_INT_INFO,
+ .idVendor = 0x1B3B,
+ .idProduct = 0x2970,
+ .bInterfaceClass = USB_CLASS_VIDEO,
+ .bInterfaceSubClass = 1,
+ .bInterfaceProtocol = 0,
+ .driver_info = UVC_QUIRK_PROBE_MINMAX
+ | UVC_QUIRK_STREAM_NO_FID
+ | UVC_QUIRK_MOTION
+ | UVC_QUIRK_SINGLE_ISO },
+
/* Generic USB Video Class */
{ USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) },
{}
Index: linux-3.10.12/drivers/media/usb/uvc/uvc_status.c
===================================================================
--- linux-3.10.12.orig/drivers/media/usb/uvc/uvc_status.c 2013-09-14 15:55:12.000000000 +0200
+++ linux-3.10.12/drivers/media/usb/uvc/uvc_status.c 2013-09-19 01:52:55.721188742 +0200
@@ -139,6 +139,7 @@
switch (dev->status[0] & 0x0f) {
case UVC_STATUS_TYPE_CONTROL:
uvc_event_control(dev, dev->status, len);
+ dev->motion = 1;
break;
case UVC_STATUS_TYPE_STREAMING:
@@ -182,6 +183,7 @@
}
pipe = usb_rcvintpipe(dev->udev, ep->desc.bEndpointAddress);
+ dev->motion = 0;
/* For high-speed interrupt endpoints, the bInterval value is used as
* an exponent of two. Some developers forgot about it.
Index: linux-3.10.12/drivers/media/usb/uvc/uvc_video.c
===================================================================
--- linux-3.10.12.orig/drivers/media/usb/uvc/uvc_video.c 2013-09-14 15:55:12.000000000 +0200
+++ linux-3.10.12/drivers/media/usb/uvc/uvc_video.c 2013-09-19 07:31:28.642057093 +0200
@@ -21,6 +21,11 @@
#include <linux/wait.h>
#include <linux/atomic.h>
#include <asm/unaligned.h>
+#include <linux/skbuff.h>
+#include <linux/kobject.h>
+#include <linux/netlink.h>
+#include <linux/kobject.h>
+#include <linux/workqueue.h>
#include <media/v4l2-common.h>
@@ -1074,9 +1079,149 @@
}
}
+struct bh_priv {
+ unsigned long seen;
+};
+
+struct bh_event {
+ const char *name;
+ struct sk_buff *skb;
+ struct work_struct work;
+};
+
+#define BH_ERR(fmt, args...) printk(KERN_ERR "%s: " fmt, "webcam", ##args )
+#define BH_DBG(fmt, args...) do {} while (0)
+#define BH_SKB_SIZE 2048
+
+extern u64 uevent_next_seqnum(void);
+static int seen = 0;
+
+static int bh_event_add_var(struct bh_event *event, int argv,
+ const char *format, ...)
+{
+ static char buf[128];
+ char *s;
+ va_list args;
+ int len;
+
+ if (argv)
+ return 0;
+
+ va_start(args, format);
+ len = vsnprintf(buf, sizeof(buf), format, args);
+ va_end(args);
+
+ if (len >= sizeof(buf)) {
+ BH_ERR("buffer size too small\n");
+ WARN_ON(1);
+ return -ENOMEM;
+ }
+
+ s = skb_put(event->skb, len + 1);
+ strcpy(s, buf);
+
+ BH_DBG("added variable '%s'\n", s);
+
+ return 0;
+}
+
+static int motion_hotplug_fill_event(struct bh_event *event)
+{
+ int s = jiffies;
+ int ret;
+
+ if (!seen)
+ seen = jiffies;
+
+ ret = bh_event_add_var(event, 0, "HOME=%s", "/");
+ if (ret)
+ return ret;
+
+ ret = bh_event_add_var(event, 0, "PATH=%s",
+ "/sbin:/bin:/usr/sbin:/usr/bin");
+ if (ret)
+ return ret;
+
+ ret = bh_event_add_var(event, 0, "SUBSYSTEM=usb");
+ if (ret)
+ return ret;
+
+ ret = bh_event_add_var(event, 0, "ACTION=motion");
+ if (ret)
+ return ret;
+
+ ret = bh_event_add_var(event, 0, "SEEN=%d", s - seen);
+ if (ret)
+ return ret;
+ seen = s;
+
+ ret = bh_event_add_var(event, 0, "SEQNUM=%llu", uevent_next_seqnum());
+
+ return ret;
+}
+
+static void motion_hotplug_work(struct work_struct *work)
+{
+ struct bh_event *event = container_of(work, struct bh_event, work);
+ int ret = 0;
+
+ event->skb = alloc_skb(BH_SKB_SIZE, GFP_KERNEL);
+ if (!event->skb)
+ goto out_free_event;
+
+ ret = bh_event_add_var(event, 0, "%s@", "add");
+ if (ret)
+ goto out_free_skb;
+
+ ret = motion_hotplug_fill_event(event);
+ if (ret)
+ goto out_free_skb;
+
+ NETLINK_CB(event->skb).dst_group = 1;
+ broadcast_uevent(event->skb, 0, 1, GFP_KERNEL);
+
+out_free_skb:
+ if (ret) {
+ BH_ERR("work error %d\n", ret);
+ kfree_skb(event->skb);
+ }
+out_free_event:
+ kfree(event);
+}
+
+static int motion_hotplug_create_event(void)
+{
+ struct bh_event *event;
+
+ event = kzalloc(sizeof(*event), GFP_KERNEL);
+ if (!event)
+ return -ENOMEM;
+
+ event->name = "motion";
+
+ INIT_WORK(&event->work, (void *)(void *)motion_hotplug_work);
+ schedule_work(&event->work);
+
+ return 0;
+}
+
+#define MOTION_FLAG_OFFSET 4
static void uvc_video_decode_end(struct uvc_streaming *stream,
struct uvc_buffer *buf, const __u8 *data, int len)
{
+ if ((stream->dev->quirks & UVC_QUIRK_MOTION) &&
+ (data[len - 2] == 0xff) && (data[len - 1] == 0xd9)) {
+ u8 *mem;
+ buf->state = UVC_BUF_STATE_READY;
+ mem = (u8 *) (buf->mem + MOTION_FLAG_OFFSET);
+ if ( stream->dev->motion ) {
+ stream->dev->motion = 0;
+ motion_hotplug_create_event();
+ } else {
+ *mem &= 0x7f;
+ }
+ }
+
/* Mark the buffer as done if the EOF marker is set. */
if (data[1] & UVC_STREAM_EOF && buf->bytesused != 0) {
uvc_trace(UVC_TRACE_FRAME, "Frame complete (EOF found).\n");
@@ -1477,6 +1622,8 @@
if (npackets == 0)
return -ENOMEM;
+ if (stream->dev->quirks & UVC_QUIRK_SINGLE_ISO)
+ npackets = 1;
size = npackets * psize;
for (i = 0; i < UVC_URBS; ++i) {
Index: linux-3.10.12/drivers/media/usb/uvc/uvcvideo.h
===================================================================
--- linux-3.10.12.orig/drivers/media/usb/uvc/uvcvideo.h 2013-09-14 15:55:12.000000000 +0200
+++ linux-3.10.12/drivers/media/usb/uvc/uvcvideo.h 2013-09-19 04:36:51.801609222 +0200
@@ -137,6 +137,8 @@
#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
#define UVC_QUIRK_PROBE_DEF 0x00000100
#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
+#define UVC_QUIRK_MOTION 0x00000400
+#define UVC_QUIRK_SINGLE_ISO 0x00000800
/* Format flags */
#define UVC_FMT_FLAG_COMPRESSED 0x00000001
@@ -538,6 +540,7 @@
__u8 *status;
struct input_dev *input;
char input_phys[64];
+ int motion;
};
enum uvc_handle_state {