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 --- a/drivers/media/usb/uvc/uvc_driver.c
  15 +++ b/drivers/media/usb/uvc/uvc_driver.c
  16 @@ -2476,6 +2476,20 @@ static struct usb_device_id uvc_ids[] =
  17           .bInterfaceProtocol   = 0,
  18           .driver_info          = UVC_QUIRK_PROBE_MINMAX
  19                                 | UVC_QUIRK_IGNORE_SELECTOR_UNIT },
  20 +
  21 +/* iPassion iP2970 */
  22 +       { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
  23 +                               | USB_DEVICE_ID_MATCH_INT_INFO,
  24 +        .idVendor              = 0x1B3B,
  25 +        .idProduct             = 0x2970,
  26 +        .bInterfaceClass       = USB_CLASS_VIDEO,
  27 +        .bInterfaceSubClass    = 1,
  28 +        .bInterfaceProtocol    = 0,
  29 +        .driver_info           = UVC_QUIRK_PROBE_MINMAX
  30 +                               | UVC_QUIRK_STREAM_NO_FID
  31 +                               | UVC_QUIRK_MOTION
  32 +                               | UVC_QUIRK_SINGLE_ISO },
  33 +
  34         /* Generic USB Video Class */
  35         { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) },
  36         {}
  37 --- a/drivers/media/usb/uvc/uvc_status.c
  38 +++ b/drivers/media/usb/uvc/uvc_status.c
  39 @@ -139,6 +139,7 @@ static void uvc_status_complete(struct u
  40                 switch (dev->status[0] & 0x0f) {
  41                 case UVC_STATUS_TYPE_CONTROL:
  42                         uvc_event_control(dev, dev->status, len);
  43 +                       dev->motion = 1;
  44                         break;
  45
  46                 case UVC_STATUS_TYPE_STREAMING:
  47 @@ -182,6 +183,7 @@ int uvc_status_init(struct uvc_device *d
  48         }
  49
  50         pipe = usb_rcvintpipe(dev->udev, ep->desc.bEndpointAddress);
  51 +       dev->motion = 0;
  52
  53         /* For high-speed interrupt endpoints, the bInterval value is used as
  54          * an exponent of two. Some developers forgot about it.
  55 --- a/drivers/media/usb/uvc/uvc_video.c
  56 +++ b/drivers/media/usb/uvc/uvc_video.c
  57 @@ -21,6 +21,11 @@
  58  #include <linux/wait.h>
  59  #include <linux/atomic.h>
  60  #include <asm/unaligned.h>
  61 +#include <linux/skbuff.h>
  62 +#include <linux/kobject.h>
  63 +#include <linux/netlink.h>
  64 +#include <linux/kobject.h>
  65 +#include <linux/workqueue.h>
  66
  67  #include <media/v4l2-common.h>
  68
  69 @@ -1080,9 +1085,149 @@ static void uvc_video_decode_data(struct
  70         }
  71  }
  72
  73 +struct bh_priv {
  74 +       unsigned long   seen;
  75 +};
  76 +
  77 +struct bh_event {
  78 +       const char              *name;
  79 +       struct sk_buff          *skb;
  80 +       struct work_struct      work;
  81 +};
  82 +
  83 +#define BH_ERR(fmt, args...) printk(KERN_ERR "%s: " fmt, "webcam", ##args )
  84 +#define BH_DBG(fmt, args...) do {} while (0)
  85 +#define BH_SKB_SIZE     2048
  86 +
  87 +extern u64 uevent_next_seqnum(void);
  88 +static int seen = 0;
  89 +
  90 +static int bh_event_add_var(struct bh_event *event, int argv,
  91 +               const char *format, ...)
  92 +{
  93 +       static char buf[128];
  94 +       char *s;
  95 +       va_list args;
  96 +       int len;
  97 +
  98 +       if (argv)
  99 +               return 0;
 100 +
 101 +       va_start(args, format);
 102 +       len = vsnprintf(buf, sizeof(buf), format, args);
 103 +       va_end(args);
 104 +
 105 +       if (len >= sizeof(buf)) {
 106 +               BH_ERR("buffer size too small\n");
 107 +               WARN_ON(1);
 108 +               return -ENOMEM;
 109 +       }
 110 +
 111 +       s = skb_put(event->skb, len + 1);
 112 +       strcpy(s, buf);
 113 +
 114 +       BH_DBG("added variable '%s'\n", s);
 115 +
 116 +       return 0;
 117 +}
 118 +
 119 +static int motion_hotplug_fill_event(struct bh_event *event)
 120 +{
 121 +       int s = jiffies;
 122 +       int ret;
 123 +
 124 +       if (!seen)
 125 +               seen = jiffies;
 126 +
 127 +       ret = bh_event_add_var(event, 0, "HOME=%s", "/");
 128 +       if (ret)
 129 +               return ret;
 130 +
 131 +       ret = bh_event_add_var(event, 0, "PATH=%s",
 132 +               "/sbin:/bin:/usr/sbin:/usr/bin");
 133 +       if (ret)
 134 +               return ret;
 135 +
 136 +       ret = bh_event_add_var(event, 0, "SUBSYSTEM=usb");
 137 +       if (ret)
 138 +               return ret;
 139 +
 140 +       ret = bh_event_add_var(event, 0, "ACTION=motion");
 141 +       if (ret)
 142 +               return ret;
 143 +
 144 +       ret = bh_event_add_var(event, 0, "SEEN=%d", s - seen);
 145 +       if (ret)
 146 +               return ret;
 147 +       seen = s;
 148 +
 149 +       ret = bh_event_add_var(event, 0, "SEQNUM=%llu", uevent_next_seqnum());
 150 +
 151 +       return ret;
 152 +}
 153 +
 154 +static void motion_hotplug_work(struct work_struct *work)
 155 +{
 156 +       struct bh_event *event = container_of(work, struct bh_event, work);
 157 +       int ret = 0;
 158 +
 159 +       event->skb = alloc_skb(BH_SKB_SIZE, GFP_KERNEL);
 160 +       if (!event->skb)
 161 +               goto out_free_event;
 162 +
 163 +       ret = bh_event_add_var(event, 0, "%s@", "add");
 164 +       if (ret)
 165 +               goto out_free_skb;
 166 +
 167 +       ret = motion_hotplug_fill_event(event);
 168 +       if (ret)
 169 +               goto out_free_skb;
 170 +
 171 +       NETLINK_CB(event->skb).dst_group = 1;
 172 +       broadcast_uevent(event->skb, 0, 1, GFP_KERNEL);
 173 +
 174 +out_free_skb:
 175 +       if (ret) {
 176 +               BH_ERR("work error %d\n", ret);
 177 +               kfree_skb(event->skb);
 178 +       }
 179 +out_free_event:
 180 +       kfree(event);
 181 +}
 182 +
 183 +static int motion_hotplug_create_event(void)
 184 +{
 185 +       struct bh_event *event;
 186 +
 187 +       event = kzalloc(sizeof(*event), GFP_KERNEL);
 188 +       if (!event)
 189 +               return -ENOMEM;
 190 +
 191 +       event->name = "motion";
 192 +
 193 +       INIT_WORK(&event->work, (void *)(void *)motion_hotplug_work);
 194 +       schedule_work(&event->work);
 195 +
 196 +       return 0;
 197 +}
 198 +
 199 +#define MOTION_FLAG_OFFSET     4
 200  static void uvc_video_decode_end(struct uvc_streaming *stream,
 201                 struct uvc_buffer *buf, const __u8 *data, int len)
 202  {
 203 +       if ((stream->dev->quirks & UVC_QUIRK_MOTION) &&
 204 +                       (data[len - 2] == 0xff) && (data[len - 1] == 0xd9)) {
 205 +               u8 *mem;
 206 +               buf->state = UVC_BUF_STATE_READY;
 207 +               mem = (u8 *) (buf->mem + MOTION_FLAG_OFFSET);
 208 +               if ( stream->dev->motion ) {
 209 +                       stream->dev->motion = 0;
 210 +                       motion_hotplug_create_event();
 211 +               } else {
 212 +                       *mem &= 0x7f;
 213 +               }
 214 +       }
 215 +
 216         /* Mark the buffer as done if the EOF marker is set. */
 217         if (data[1] & UVC_STREAM_EOF && buf->bytesused != 0) {
 218                 uvc_trace(UVC_TRACE_FRAME, "Frame complete (EOF found).\n");
 219 @@ -1483,6 +1628,8 @@ static int uvc_init_video_isoc(struct uv
 220         if (npackets == 0)
 221                 return -ENOMEM;
 222
 223 +       if (stream->dev->quirks & UVC_QUIRK_SINGLE_ISO)
 224 +               npackets = 1;
 225         size = npackets * psize;
 226
 227         for (i = 0; i < UVC_URBS; ++i) {
 228 --- a/drivers/media/usb/uvc/uvcvideo.h
 229 +++ b/drivers/media/usb/uvc/uvcvideo.h
 230 @@ -137,6 +137,8 @@
 231  #define UVC_QUIRK_FIX_BANDWIDTH                0x00000080
 232  #define UVC_QUIRK_PROBE_DEF            0x00000100
 233  #define UVC_QUIRK_RESTRICT_FRAME_RATE  0x00000200
 234 +#define UVC_QUIRK_MOTION               0x00000400
 235 +#define UVC_QUIRK_SINGLE_ISO           0x00000800
 236
 237  /* Format flags */
 238  #define UVC_FMT_FLAG_COMPRESSED                0x00000001
 239 @@ -539,6 +541,7 @@ struct uvc_device {
 240         __u8 *status;
 241         struct input_dev *input;
 242         char input_phys[64];
 243 +       int motion;
 244  };
 245
 246  enum uvc_handle_state {