target/linux/ramips/patches-3.14/0057-uvc-add-iPassion-iP2970-support.patch

   1 From 0d3e92b4d3e2160873b610aabd46bbc4853ff82e Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Thu, 19 Sep 2013 01:50:59 +0200
   4 Subject: [PATCH 57/57] uvc: add iPassion iP2970 support
   5
   6 Signed-off-by: John Crispin <blogic@openwrt.org>
   7 ---
   8  drivers/media/usb/uvc/uvc_driver.c |   14 ++++
   9  drivers/media/usb/uvc/uvc_status.c |    2 +
  10  drivers/media/usb/uvc/uvc_video.c  |  147 ++++++++++++++++++++++++++++++++++++
  11  drivers/media/usb/uvc/uvcvideo.h   |    3 +
  12  4 files changed, 166 insertions(+)
  13
  14 diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
  15 index c3bb250..c6612d4 100644
  16 --- a/drivers/media/usb/uvc/uvc_driver.c
  17 +++ b/drivers/media/usb/uvc/uvc_driver.c
  18 @@ -2467,6 +2467,20 @@ static struct usb_device_id uvc_ids[] = {
  19           .bInterfaceProtocol   = 0,
  20           .driver_info          = UVC_QUIRK_PROBE_MINMAX
  21                                 | UVC_QUIRK_IGNORE_SELECTOR_UNIT },
  22 +
  23 +/* iPassion iP2970 */
  24 +       { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
  25 +                               | USB_DEVICE_ID_MATCH_INT_INFO,
  26 +        .idVendor              = 0x1B3B,
  27 +        .idProduct             = 0x2970,
  28 +        .bInterfaceClass       = USB_CLASS_VIDEO,
  29 +        .bInterfaceSubClass    = 1,
  30 +        .bInterfaceProtocol    = 0,
  31 +        .driver_info           = UVC_QUIRK_PROBE_MINMAX
  32 +                               | UVC_QUIRK_STREAM_NO_FID
  33 +                               | UVC_QUIRK_MOTION
  34 +                               | UVC_QUIRK_SINGLE_ISO },
  35 +
  36         /* Generic USB Video Class */
  37         { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) },
  38         {}
  39 diff --git a/drivers/media/usb/uvc/uvc_status.c b/drivers/media/usb/uvc/uvc_status.c
  40 index f552ab9..7132ad4 100644
  41 --- a/drivers/media/usb/uvc/uvc_status.c
  42 +++ b/drivers/media/usb/uvc/uvc_status.c
  43 @@ -139,6 +139,7 @@ static void uvc_status_complete(struct urb *urb)
  44                 switch (dev->status[0] & 0x0f) {
  45                 case UVC_STATUS_TYPE_CONTROL:
  46                         uvc_event_control(dev, dev->status, len);
  47 +                       dev->motion = 1;
  48                         break;
  49
  50                 case UVC_STATUS_TYPE_STREAMING:
  51 @@ -182,6 +183,7 @@ int uvc_status_init(struct uvc_device *dev)
  52         }
  53
  54         pipe = usb_rcvintpipe(dev->udev, ep->desc.bEndpointAddress);
  55 +       dev->motion = 0;
  56
  57         /* For high-speed interrupt endpoints, the bInterval value is used as
  58          * an exponent of two. Some developers forgot about it.
  59 diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
  60 index 898c208..2e06163 100644
  61 --- a/drivers/media/usb/uvc/uvc_video.c
  62 +++ b/drivers/media/usb/uvc/uvc_video.c
  63 @@ -21,6 +21,11 @@
  64  #include <linux/wait.h>
  65  #include <linux/atomic.h>
  66  #include <asm/unaligned.h>
  67 +#include <linux/skbuff.h>
  68 +#include <linux/kobject.h>
  69 +#include <linux/netlink.h>
  70 +#include <linux/kobject.h>
  71 +#include <linux/workqueue.h>
  72
  73  #include <media/v4l2-common.h>
  74
  75 @@ -1075,9 +1080,149 @@ static void uvc_video_decode_data(struct uvc_streaming *stream,
  76         }
  77  }
  78
  79 +struct bh_priv {
  80 +       unsigned long   seen;
  81 +};
  82 +
  83 +struct bh_event {
  84 +       const char              *name;
  85 +       struct sk_buff          *skb;
  86 +       struct work_struct      work;
  87 +};
  88 +
  89 +#define BH_ERR(fmt, args...) printk(KERN_ERR "%s: " fmt, "webcam", ##args )
  90 +#define BH_DBG(fmt, args...) do {} while (0)
  91 +#define BH_SKB_SIZE     2048
  92 +
  93 +extern u64 uevent_next_seqnum(void);
  94 +static int seen = 0;
  95 +
  96 +static int bh_event_add_var(struct bh_event *event, int argv,
  97 +               const char *format, ...)
  98 +{
  99 +       static char buf[128];
 100 +       char *s;
 101 +       va_list args;
 102 +       int len;
 103 +
 104 +       if (argv)
 105 +               return 0;
 106 +
 107 +       va_start(args, format);
 108 +       len = vsnprintf(buf, sizeof(buf), format, args);
 109 +       va_end(args);
 110 +
 111 +       if (len >= sizeof(buf)) {
 112 +               BH_ERR("buffer size too small\n");
 113 +               WARN_ON(1);
 114 +               return -ENOMEM;
 115 +       }
 116 +
 117 +       s = skb_put(event->skb, len + 1);
 118 +       strcpy(s, buf);
 119 +
 120 +       BH_DBG("added variable '%s'\n", s);
 121 +
 122 +       return 0;
 123 +}
 124 +
 125 +static int motion_hotplug_fill_event(struct bh_event *event)
 126 +{
 127 +       int s = jiffies;
 128 +       int ret;
 129 +
 130 +       if (!seen)
 131 +               seen = jiffies;
 132 +
 133 +       ret = bh_event_add_var(event, 0, "HOME=%s", "/");
 134 +       if (ret)
 135 +               return ret;
 136 +
 137 +       ret = bh_event_add_var(event, 0, "PATH=%s",
 138 +               "/sbin:/bin:/usr/sbin:/usr/bin");
 139 +       if (ret)
 140 +               return ret;
 141 +
 142 +       ret = bh_event_add_var(event, 0, "SUBSYSTEM=usb");
 143 +       if (ret)
 144 +               return ret;
 145 +
 146 +       ret = bh_event_add_var(event, 0, "ACTION=motion");
 147 +       if (ret)
 148 +               return ret;
 149 +
 150 +       ret = bh_event_add_var(event, 0, "SEEN=%d", s - seen);
 151 +       if (ret)
 152 +               return ret;
 153 +       seen = s;
 154 +
 155 +       ret = bh_event_add_var(event, 0, "SEQNUM=%llu", uevent_next_seqnum());
 156 +
 157 +       return ret;
 158 +}
 159 +
 160 +static void motion_hotplug_work(struct work_struct *work)
 161 +{
 162 +       struct bh_event *event = container_of(work, struct bh_event, work);
 163 +       int ret = 0;
 164 +
 165 +       event->skb = alloc_skb(BH_SKB_SIZE, GFP_KERNEL);
 166 +       if (!event->skb)
 167 +               goto out_free_event;
 168 +
 169 +       ret = bh_event_add_var(event, 0, "%s@", "add");
 170 +       if (ret)
 171 +               goto out_free_skb;
 172 +
 173 +       ret = motion_hotplug_fill_event(event);
 174 +       if (ret)
 175 +               goto out_free_skb;
 176 +
 177 +       NETLINK_CB(event->skb).dst_group = 1;
 178 +       broadcast_uevent(event->skb, 0, 1, GFP_KERNEL);
 179 +
 180 +out_free_skb:
 181 +       if (ret) {
 182 +               BH_ERR("work error %d\n", ret);
 183 +               kfree_skb(event->skb);
 184 +       }
 185 +out_free_event:
 186 +       kfree(event);
 187 +}
 188 +
 189 +static int motion_hotplug_create_event(void)
 190 +{
 191 +       struct bh_event *event;
 192 +
 193 +       event = kzalloc(sizeof(*event), GFP_KERNEL);
 194 +       if (!event)
 195 +               return -ENOMEM;
 196 +
 197 +       event->name = "motion";
 198 +
 199 +       INIT_WORK(&event->work, (void *)(void *)motion_hotplug_work);
 200 +       schedule_work(&event->work);
 201 +
 202 +       return 0;
 203 +}
 204 +
 205 +#define MOTION_FLAG_OFFSET     4
 206  static void uvc_video_decode_end(struct uvc_streaming *stream,
 207                 struct uvc_buffer *buf, const __u8 *data, int len)
 208  {
 209 +       if ((stream->dev->quirks & UVC_QUIRK_MOTION) &&
 210 +                       (data[len - 2] == 0xff) && (data[len - 1] == 0xd9)) {
 211 +               u8 *mem;
 212 +               buf->state = UVC_BUF_STATE_READY;
 213 +               mem = (u8 *) (buf->mem + MOTION_FLAG_OFFSET);
 214 +               if ( stream->dev->motion ) {
 215 +                       stream->dev->motion = 0;
 216 +                       motion_hotplug_create_event();
 217 +               } else {
 218 +                       *mem &= 0x7f;
 219 +               }
 220 +       }
 221 +
 222         /* Mark the buffer as done if the EOF marker is set. */
 223         if (data[1] & UVC_STREAM_EOF && buf->bytesused != 0) {
 224                 uvc_trace(UVC_TRACE_FRAME, "Frame complete (EOF found).\n");
 225 @@ -1478,6 +1623,8 @@ static int uvc_init_video_isoc(struct uvc_streaming *stream,
 226         if (npackets == 0)
 227                 return -ENOMEM;
 228
 229 +       if (stream->dev->quirks & UVC_QUIRK_SINGLE_ISO)
 230 +               npackets = 1;
 231         size = npackets * psize;
 232
 233         for (i = 0; i < UVC_URBS; ++i) {
 234 diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
 235 index 9e35982..3cacdfd 100644
 236 --- a/drivers/media/usb/uvc/uvcvideo.h
 237 +++ b/drivers/media/usb/uvc/uvcvideo.h
 238 @@ -137,6 +137,8 @@
 239  #define UVC_QUIRK_FIX_BANDWIDTH                0x00000080
 240  #define UVC_QUIRK_PROBE_DEF            0x00000100
 241  #define UVC_QUIRK_RESTRICT_FRAME_RATE  0x00000200
 242 +#define UVC_QUIRK_MOTION               0x00000400
 243 +#define UVC_QUIRK_SINGLE_ISO           0x00000800
 244
 245  /* Format flags */
 246  #define UVC_FMT_FLAG_COMPRESSED                0x00000001
 247 @@ -539,6 +541,7 @@ struct uvc_device {
 248         __u8 *status;
 249         struct input_dev *input;
 250         char input_phys[64];
 251 +       int motion;
 252  };
 253
 254  enum uvc_handle_state {
 255 --
 256 1.7.10.4
 257