Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:
 "The first part of the media updates for Kernel 3.7.

  This series contain:

   - A major tree renaming patch series: now, drivers are organized
     internally by their used bus, instead of by V4L2 and/or DVB API,
     providing a cleaner driver location for hybrid drivers that
     implement both APIs, and allowing to cleanup the Kconfig items and
     make them more intuitive for the end user;

   - Media Kernel developers are typically very lazy with their duties
     of keeping the MAINTAINERS entries for their drivers updated.  As
     now the tree is more organized, we're doing an effort to add/update
     those entries for the drivers that aren't currently orphan;

   - Several DVB USB drivers got moved to a new DVB USB v2 core; the new
     core fixes several bugs (as the existing one that got bitroted).
     Now, suspend/resume finally started to work fine (at least with
     some devices - we should expect more work with regards to it);

   - added multistream support for DVB-T2, and unified the API for
     DVB-S2 and ISDB-S.  Backward binary support is preserved;

   - as usual, a few new drivers, some V4L2 core improvements and lots
     of drivers improvements and fixes.

  There are some points to notice on this series:

   1) you should expect a trivial merge conflict on your tree, with the
      removal of Documentation/feature-removal-schedule.txt: this series
      would be adding two additional entries there.  I opted to not
      rebase it due to this recent change;

   2) With regards to the PCTV 520e udev-related breakage, I opted to
      fix it in a way that the patches can be backported to 3.5 even
      without your firmware fix patch.  This way, Greg doesn't need to
      rush backporting your patch (as there are still the firmware cache
      and firmware path customization issues to be addressed there).

      I'll send later a patch (likely after the end of the merge window)
      reverting the rest of the DRX-K async firmware request, fully
      restoring its original behaviour to allow media drivers to
      initialize everything serialized as before for 3.7 and upper.

   3) I'm planning to work on this weekend to test the DMABUF patches
      for V4L2.  The patches are on my queue for several Kernel cycles,
      but, up to now, there is/was no way to test the series locally.

      I have some concerns about this particular changeset with regards
      to security issues, and with regards to the replacement of the old
      VIDIOC_OVERLAY ioctl's that is broken on modern systems, due to
      GPU drivers change.  The Overlay API allows direct PCI2PCI
      transfers from a media capture card into the GPU framebuffer, but
      its API is crappy.  Also, the only existing X11 driver that
      implements it requires a XV extension that is not available
      anymore on modern drivers.  The DMABUF can do the same thing, but
      with it is promising to be a properly-designed API.  If I can
      successfully test this series and be happy with it, I should be
      asking you to pull them next week."

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (717 commits)
  em28xx: regression fix: use DRX-K sync firmware requests on em28xx
  drxk: allow loading firmware synchrousnously
  em28xx: Make all em28xx extensions to be initialized asynchronously
  [media] tda18271: properly report read errors in tda18271_get_id
  [media] tda18271: delay IR & RF calibration until init() if delay_cal is set
  [media] MAINTAINERS: add Michael Krufky as tda827x maintainer
  [media] MAINTAINERS: add Michael Krufky as tda8290 maintainer
  [media] MAINTAINERS: add Michael Krufky as cxusb maintainer
  [media] MAINTAINERS: add Michael Krufky as lg2160 maintainer
  [media] MAINTAINERS: add Michael Krufky as lgdt3305 maintainer
  [media] MAINTAINERS: add Michael Krufky as mxl111sf maintainer
  [media] MAINTAINERS: add Michael Krufky as mxl5007t maintainer
  [media] MAINTAINERS: add Michael Krufky as tda18271 maintainer
  [media] s5p-tv: Report only multi-plane capabilities in vidioc_querycap
  [media] s5p-mfc: Fix misplaced return statement in s5p_mfc_suspend()
  [media] exynos-gsc: Add missing static storage class specifiers
  [media] exynos-gsc: Remove <linux/version.h> header file inclusion
  [media] s5p-fimc: Fix incorrect condition in fimc_lite_reqbufs()
  [media] s5p-tv: Fix potential NULL pointer dereference error
  [media] s5k6aa: Fix possible NULL pointer dereference
  ...

1 files changed, 1668 insertions, 0 deletions

diff --git a/drivers/media/usb/tlg2300/pd-video.c b/drivers/media/usb/tlg2300/pd-video.c
new file mode 100644
index 00000000000..1f448ac7a49
--- /dev/null
+++ b/drivers/media/usb/tlg2300/pd-video.c
@@ -0,0 +1,1668 @@
+#include <linux/fs.h>
+#include <linux/vmalloc.h>
+#include <linux/videodev2.h>
+#include <linux/usb.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-dev.h>
+
+#include "pd-common.h"
+#include "vendorcmds.h"
+
+#ifdef CONFIG_PM
+static int pm_video_suspend(struct poseidon *pd);
+static int pm_video_resume(struct poseidon *pd);
+#endif
+static void iso_bubble_handler(struct work_struct *w);
+
+static int usb_transfer_mode;
+module_param(usb_transfer_mode, int, 0644);
+MODULE_PARM_DESC(usb_transfer_mode, "0 = Bulk, 1 = Isochronous");
+
+static const struct poseidon_format poseidon_formats[] = {
+	{ "YUV 422", V4L2_PIX_FMT_YUYV, 16, 0},
+	{ "RGB565", V4L2_PIX_FMT_RGB565, 16, 0},
+};
+
+static const struct poseidon_tvnorm poseidon_tvnorms[] = {
+	{ V4L2_STD_PAL_D, "PAL-D",  TLG_TUNE_VSTD_PAL_D },
+	{ V4L2_STD_PAL_B, "PAL-B",  TLG_TUNE_VSTD_PAL_B },
+	{ V4L2_STD_PAL_G, "PAL-G",  TLG_TUNE_VSTD_PAL_G },
+	{ V4L2_STD_PAL_H, "PAL-H",  TLG_TUNE_VSTD_PAL_H },
+	{ V4L2_STD_PAL_I, "PAL-I",  TLG_TUNE_VSTD_PAL_I },
+	{ V4L2_STD_PAL_M, "PAL-M",  TLG_TUNE_VSTD_PAL_M },
+	{ V4L2_STD_PAL_N, "PAL-N",  TLG_TUNE_VSTD_PAL_N_COMBO },
+	{ V4L2_STD_PAL_Nc, "PAL-Nc", TLG_TUNE_VSTD_PAL_N_COMBO },
+	{ V4L2_STD_NTSC_M, "NTSC-M", TLG_TUNE_VSTD_NTSC_M },
+	{ V4L2_STD_NTSC_M_JP, "NTSC-JP", TLG_TUNE_VSTD_NTSC_M_J },
+	{ V4L2_STD_SECAM_B, "SECAM-B", TLG_TUNE_VSTD_SECAM_B },
+	{ V4L2_STD_SECAM_D, "SECAM-D", TLG_TUNE_VSTD_SECAM_D },
+	{ V4L2_STD_SECAM_G, "SECAM-G", TLG_TUNE_VSTD_SECAM_G },
+	{ V4L2_STD_SECAM_H, "SECAM-H", TLG_TUNE_VSTD_SECAM_H },
+	{ V4L2_STD_SECAM_K, "SECAM-K", TLG_TUNE_VSTD_SECAM_K },
+	{ V4L2_STD_SECAM_K1, "SECAM-K1", TLG_TUNE_VSTD_SECAM_K1 },
+	{ V4L2_STD_SECAM_L, "SECAM-L", TLG_TUNE_VSTD_SECAM_L },
+	{ V4L2_STD_SECAM_LC, "SECAM-LC", TLG_TUNE_VSTD_SECAM_L1 },
+};
+static const unsigned int POSEIDON_TVNORMS = ARRAY_SIZE(poseidon_tvnorms);
+
+struct pd_audio_mode {
+	u32 tlg_audio_mode;
+	u32 v4l2_audio_sub;
+	u32 v4l2_audio_mode;
+};
+
+static const struct pd_audio_mode pd_audio_modes[] = {
+	{ TLG_TUNE_TVAUDIO_MODE_MONO, V4L2_TUNER_SUB_MONO,
+		V4L2_TUNER_MODE_MONO },
+	{ TLG_TUNE_TVAUDIO_MODE_STEREO, V4L2_TUNER_SUB_STEREO,
+		V4L2_TUNER_MODE_STEREO },
+	{ TLG_TUNE_TVAUDIO_MODE_LANG_A, V4L2_TUNER_SUB_LANG1,
+		V4L2_TUNER_MODE_LANG1 },
+	{ TLG_TUNE_TVAUDIO_MODE_LANG_B, V4L2_TUNER_SUB_LANG2,
+		V4L2_TUNER_MODE_LANG2 },
+	{ TLG_TUNE_TVAUDIO_MODE_LANG_C, V4L2_TUNER_SUB_LANG1,
+		V4L2_TUNER_MODE_LANG1_LANG2 }
+};
+static const unsigned int POSEIDON_AUDIOMODS = ARRAY_SIZE(pd_audio_modes);
+
+struct pd_input {
+	char *name;
+	uint32_t tlg_src;
+};
+
+static const struct pd_input pd_inputs[] = {
+	{ "TV Antenna", TLG_SIG_SRC_ANTENNA },
+	{ "TV Cable", TLG_SIG_SRC_CABLE },
+	{ "TV SVideo", TLG_SIG_SRC_SVIDEO },
+	{ "TV Composite", TLG_SIG_SRC_COMPOSITE }
+};
+static const unsigned int POSEIDON_INPUTS = ARRAY_SIZE(pd_inputs);
+
+struct poseidon_control {
+	struct v4l2_queryctrl v4l2_ctrl;
+	enum cmd_custom_param_id vc_id;
+};
+
+static struct poseidon_control controls[] = {
+	{
+		{ V4L2_CID_BRIGHTNESS, V4L2_CTRL_TYPE_INTEGER,
+			"brightness", 0, 10000, 1, 100, 0, },
+		CUST_PARM_ID_BRIGHTNESS_CTRL
+	}, {
+		{ V4L2_CID_CONTRAST, V4L2_CTRL_TYPE_INTEGER,
+			"contrast", 0, 10000, 1, 100, 0, },
+		CUST_PARM_ID_CONTRAST_CTRL,
+	}, {
+		{ V4L2_CID_HUE, V4L2_CTRL_TYPE_INTEGER,
+			"hue", 0, 10000, 1, 100, 0, },
+		CUST_PARM_ID_HUE_CTRL,
+	}, {
+		{ V4L2_CID_SATURATION, V4L2_CTRL_TYPE_INTEGER,
+			"saturation", 0, 10000, 1, 100, 0, },
+		CUST_PARM_ID_SATURATION_CTRL,
+	},
+};
+
+struct video_std_to_audio_std {
+	v4l2_std_id	video_std;
+	int 		audio_std;
+};
+
+static const struct video_std_to_audio_std video_to_audio_map[] = {
+	/* country : { 27, 32, 33, 34, 36, 44, 45, 46, 47, 48, 64,
+			65, 86, 351, 352, 353, 354, 358, 372, 852, 972 } */
+	{ (V4L2_STD_PAL_I | V4L2_STD_PAL_B | V4L2_STD_PAL_D |
+		V4L2_STD_SECAM_L | V4L2_STD_SECAM_D), TLG_TUNE_ASTD_NICAM },
+
+	/* country : { 1, 52, 54, 55, 886 } */
+	{V4L2_STD_NTSC_M | V4L2_STD_PAL_N | V4L2_STD_PAL_M, TLG_TUNE_ASTD_BTSC},
+
+	/* country : { 81 } */
+	{ V4L2_STD_NTSC_M_JP, TLG_TUNE_ASTD_EIAJ },
+
+	/* other country : TLG_TUNE_ASTD_A2 */
+};
+static const unsigned int map_size = ARRAY_SIZE(video_to_audio_map);
+
+static int get_audio_std(v4l2_std_id v4l2_std)
+{
+	int i = 0;
+
+	for (; i < map_size; i++) {
+		if (v4l2_std & video_to_audio_map[i].video_std)
+			return video_to_audio_map[i].audio_std;
+	}
+	return TLG_TUNE_ASTD_A2;
+}
+
+static int vidioc_querycap(struct file *file, void *fh,
+			struct v4l2_capability *cap)
+{
+	struct front_face *front = fh;
+	struct poseidon *p = front->pd;
+
+	logs(front);
+
+	strcpy(cap->driver, "tele-video");
+	strcpy(cap->card, "Telegent Poseidon");
+	usb_make_path(p->udev, cap->bus_info, sizeof(cap->bus_info));
+	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
+				V4L2_CAP_AUDIO | V4L2_CAP_STREAMING |
+				V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE;
+	return 0;
+}
+
+/*====================================================================*/
+static void init_copy(struct video_data *video, bool index)
+{
+	struct front_face *front = video->front;
+
+	video->field_count	= index;
+	video->lines_copied	= 0;
+	video->prev_left	= 0 ;
+	video->dst 		= (char *)videobuf_to_vmalloc(front->curr_frame)
+					+ index * video->lines_size;
+	video->vbi->copied 	= 0; /* set it here */
+}
+
+static bool get_frame(struct front_face *front, int *need_init)
+{
+	struct videobuf_buffer *vb = front->curr_frame;
+
+	if (vb)
+		return true;
+
+	spin_lock(&front->queue_lock);
+	if (!list_empty(&front->active)) {
+		vb = list_entry(front->active.next,
+			       struct videobuf_buffer, queue);
+		if (need_init)
+			*need_init = 1;
+		front->curr_frame = vb;
+		list_del_init(&vb->queue);
+	}
+	spin_unlock(&front->queue_lock);
+
+	return !!vb;
+}
+
+/* check if the video's buffer is ready */
+static bool get_video_frame(struct front_face *front, struct video_data *video)
+{
+	int need_init = 0;
+	bool ret = true;
+
+	ret = get_frame(front, &need_init);
+	if (ret && need_init)
+		init_copy(video, 0);
+	return ret;
+}
+
+static void submit_frame(struct front_face *front)
+{
+	struct videobuf_buffer *vb = front->curr_frame;
+
+	if (vb == NULL)
+		return;
+
+	front->curr_frame	= NULL;
+	vb->state		= VIDEOBUF_DONE;
+	vb->field_count++;
+	do_gettimeofday(&vb->ts);
+
+	wake_up(&vb->done);
+}
+
+/*
+ * A frame is composed of two fields. If we receive all the two fields,
+ * call the  submit_frame() to submit the whole frame to applications.
+ */
+static void end_field(struct video_data *video)
+{
+	/* logs(video->front); */
+	if (1 == video->field_count)
+		submit_frame(video->front);
+	else
+		init_copy(video, 1);
+}
+
+static void copy_video_data(struct video_data *video, char *src,
+				unsigned int count)
+{
+#define copy_data(len)  \
+	do { \
+		if (++video->lines_copied > video->lines_per_field) \
+			goto overflow; \
+		memcpy(video->dst, src, len);\
+		video->dst += len + video->lines_size; \
+		src += len; \
+		count -= len; \
+	 } while (0)
+
+	while (count && count >= video->lines_size) {
+		if (video->prev_left) {
+			copy_data(video->prev_left);
+			video->prev_left = 0;
+			continue;
+		}
+		copy_data(video->lines_size);
+	}
+	if (count && count < video->lines_size) {
+		memcpy(video->dst, src, count);
+
+		video->prev_left = video->lines_size - count;
+		video->dst += count;
+	}
+	return;
+
+overflow:
+	end_field(video);
+}
+
+static void check_trailer(struct video_data *video, char *src, int count)
+{
+	struct vbi_data *vbi = video->vbi;
+	int offset; /* trailer's offset */
+	char *buf;
+
+	offset = (video->context.pix.sizeimage / 2 + vbi->vbi_size / 2)
+		- (vbi->copied + video->lines_size * video->lines_copied);
+	if (video->prev_left)
+		offset -= (video->lines_size - video->prev_left);
+
+	if (offset > count || offset <= 0)
+		goto short_package;
+
+	buf = src + offset;
+
+	/* trailer : (VFHS) + U32 + U32 + field_num */
+	if (!strncmp(buf, "VFHS", 4)) {
+		int field_num = *((u32 *)(buf + 12));
+
+		if ((field_num & 1) ^ video->field_count) {
+			init_copy(video, video->field_count);
+			return;
+		}
+		copy_video_data(video, src, offset);
+	}
+short_package:
+	end_field(video);
+}
+
+/* ==========  Check this more carefully! =========== */
+static inline void copy_vbi_data(struct vbi_data *vbi,
+				char *src, unsigned int count)
+{
+	struct front_face *front = vbi->front;
+
+	if (front && get_frame(front, NULL)) {
+		char *buf = videobuf_to_vmalloc(front->curr_frame);
+
+		if (vbi->video->field_count)
+			buf += (vbi->vbi_size / 2);
+		memcpy(buf + vbi->copied, src, count);
+	}
+	vbi->copied += count;
+}
+
+/*
+ * Copy the normal data (VBI or VIDEO) without the trailer.
+ * VBI is not interlaced, while VIDEO is interlaced.
+ */
+static inline void copy_vbi_video_data(struct video_data *video,
+				char *src, unsigned int count)
+{
+	struct vbi_data *vbi = video->vbi;
+	unsigned int vbi_delta = (vbi->vbi_size / 2) - vbi->copied;
+
+	if (vbi_delta >= count) {
+		copy_vbi_data(vbi, src, count);
+	} else {
+		if (vbi_delta) {
+			copy_vbi_data(vbi, src, vbi_delta);
+
+			/* we receive the two fields of the VBI*/
+			if (vbi->front && video->field_count)
+				submit_frame(vbi->front);
+		}
+		copy_video_data(video, src + vbi_delta, count - vbi_delta);
+	}
+}
+
+static void urb_complete_bulk(struct urb *urb)
+{
+	struct front_face *front = urb->context;
+	struct video_data *video = &front->pd->video_data;
+	char *src = (char *)urb->transfer_buffer;
+	int count = urb->actual_length;
+	int ret = 0;
+
+	if (!video->is_streaming || urb->status) {
+		if (urb->status == -EPROTO)
+			goto resend_it;
+		return;
+	}
+	if (!get_video_frame(front, video))
+		goto resend_it;
+
+	if (count == urb->transfer_buffer_length)
+		copy_vbi_video_data(video, src, count);
+	else
+		check_trailer(video, src, count);
+
+resend_it:
+	ret = usb_submit_urb(urb, GFP_ATOMIC);
+	if (ret)
+		log(" submit failed: error %d", ret);
+}
+
+/************************* for ISO *********************/
+#define GET_SUCCESS		(0)
+#define GET_TRAILER		(1)
+#define GET_TOO_MUCH_BUBBLE	(2)
+#define GET_NONE		(3)
+static int get_chunk(int start, struct urb *urb,
+			int *head, int *tail, int *bubble_err)
+{
+	struct usb_iso_packet_descriptor *pkt = NULL;
+	int ret = GET_SUCCESS;
+
+	for (*head = *tail = -1; start < urb->number_of_packets; start++) {
+		pkt = &urb->iso_frame_desc[start];
+
+		/* handle the bubble of the Hub */
+		if (-EOVERFLOW == pkt->status) {
+			if (++*bubble_err > urb->number_of_packets / 3)
+				return GET_TOO_MUCH_BUBBLE;
+			continue;
+		}
+
+		/* This is the gap */
+		if (pkt->status || pkt->actual_length <= 0
+				|| pkt->actual_length > ISO_PKT_SIZE) {
+			if (*head != -1)
+				break;
+			continue;
+		}
+
+		/* a good isochronous packet */
+		if (pkt->actual_length == ISO_PKT_SIZE) {
+			if (*head == -1)
+				*head = start;
+			*tail = start;
+			continue;
+		}
+
+		/* trailer is here */
+		if (pkt->actual_length < ISO_PKT_SIZE) {
+			if (*head == -1) {
+				*head = start;
+				*tail = start;
+				return GET_TRAILER;
+			}
+			break;
+		}
+	}
+
+	if (*head == -1 && *tail == -1)
+		ret = GET_NONE;
+	return ret;
+}
+
+/*
+ * |__|------|___|-----|_______|
+ *       ^          ^
+ *       |          |
+ *      gap        gap
+ */
+static void urb_complete_iso(struct urb *urb)
+{
+	struct front_face *front = urb->context;
+	struct video_data *video = &front->pd->video_data;
+	int bubble_err = 0, head = 0, tail = 0;
+	char *src = (char *)urb->transfer_buffer;
+	int ret = 0;
+
+	if (!video->is_streaming)
+		return;
+
+	do {
+		if (!get_video_frame(front, video))
+			goto out;
+
+		switch (get_chunk(head, urb, &head, &tail, &bubble_err)) {
+		case GET_SUCCESS:
+			copy_vbi_video_data(video, src + (head * ISO_PKT_SIZE),
+					(tail - head + 1) * ISO_PKT_SIZE);
+			break;
+		case GET_TRAILER:
+			check_trailer(video, src + (head * ISO_PKT_SIZE),
+					ISO_PKT_SIZE);
+			break;
+		case GET_NONE:
+			goto out;
+		case GET_TOO_MUCH_BUBBLE:
+			log("\t We got too much bubble");
+			schedule_work(&video->bubble_work);
+			return;
+		}
+	} while (head = tail + 1, head < urb->number_of_packets);
+
+out:
+	ret = usb_submit_urb(urb, GFP_ATOMIC);
+	if (ret)
+		log("usb_submit_urb err : %d", ret);
+}
+/*============================= [  end  ] =====================*/
+
+static int prepare_iso_urb(struct video_data *video)
+{
+	struct usb_device *udev = video->pd->udev;
+	int i;
+
+	if (video->urb_array[0])
+		return 0;
+
+	for (i = 0; i < SBUF_NUM; i++) {
+		struct urb *urb;
+		void *mem;
+		int j;
+
+		urb = usb_alloc_urb(PK_PER_URB, GFP_KERNEL);
+		if (urb == NULL)
+			goto out;
+
+		video->urb_array[i] = urb;
+		mem = usb_alloc_coherent(udev,
+					 ISO_PKT_SIZE * PK_PER_URB,
+					 GFP_KERNEL,
+					 &urb->transfer_dma);
+
+		urb->complete	= urb_complete_iso;	/* handler */
+		urb->dev	= udev;
+		urb->context	= video->front;
+		urb->pipe	= usb_rcvisocpipe(udev,
+						video->endpoint_addr);
+		urb->interval	= 1;
+		urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
+		urb->number_of_packets	= PK_PER_URB;
+		urb->transfer_buffer	= mem;
+		urb->transfer_buffer_length = PK_PER_URB * ISO_PKT_SIZE;
+
+		for (j = 0; j < PK_PER_URB; j++) {
+			urb->iso_frame_desc[j].offset = ISO_PKT_SIZE * j;
+			urb->iso_frame_desc[j].length = ISO_PKT_SIZE;
+		}
+	}
+	return 0;
+out:
+	for (; i > 0; i--)
+		;
+	return -ENOMEM;
+}
+
+/* return the succeeded number of the allocation */
+int alloc_bulk_urbs_generic(struct urb **urb_array, int num,
+			struct usb_device *udev, u8 ep_addr,
+			int buf_size, gfp_t gfp_flags,
+			usb_complete_t complete_fn, void *context)
+{
+	int i = 0;
+
+	for (; i < num; i++) {
+		void *mem;
+		struct urb *urb = usb_alloc_urb(0, gfp_flags);
+		if (urb == NULL)
+			return i;
+
+		mem = usb_alloc_coherent(udev, buf_size, gfp_flags,
+					 &urb->transfer_dma);
+		if (mem == NULL) {
+			usb_free_urb(urb);
+			return i;
+		}
+
+		usb_fill_bulk_urb(urb, udev, usb_rcvbulkpipe(udev, ep_addr),
+				mem, buf_size, complete_fn, context);
+		urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+		urb_array[i] = urb;
+	}
+	return i;
+}
+
+void free_all_urb_generic(struct urb **urb_array, int num)
+{
+	int i;
+	struct urb *urb;
+
+	for (i = 0; i < num; i++) {
+		urb = urb_array[i];
+		if (urb) {
+			usb_free_coherent(urb->dev,
+					urb->transfer_buffer_length,
+					urb->transfer_buffer,
+					urb->transfer_dma);
+			usb_free_urb(urb);
+			urb_array[i] = NULL;
+		}
+	}
+}
+
+static int prepare_bulk_urb(struct video_data *video)
+{
+	if (video->urb_array[0])
+		return 0;
+
+	alloc_bulk_urbs_generic(video->urb_array, SBUF_NUM,
+			video->pd->udev, video->endpoint_addr,
+			0x2000, GFP_KERNEL,
+			urb_complete_bulk, video->front);
+	return 0;
+}
+
+/* free the URBs */
+static void free_all_urb(struct video_data *video)
+{
+	free_all_urb_generic(video->urb_array, SBUF_NUM);
+}
+
+static void pd_buf_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
+{
+	videobuf_vmalloc_free(vb);
+	vb->state = VIDEOBUF_NEEDS_INIT;
+}
+
+static void pd_buf_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
+{
+	struct front_face *front = q->priv_data;
+	vb->state = VIDEOBUF_QUEUED;
+	list_add_tail(&vb->queue, &front->active);
+}
+
+static int pd_buf_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
+			   enum v4l2_field field)
+{
+	struct front_face *front = q->priv_data;
+	int rc;
+
+	switch (front->type) {
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+		if (VIDEOBUF_NEEDS_INIT == vb->state) {
+			struct v4l2_pix_format *pix;
+
+			pix = &front->pd->video_data.context.pix;
+			vb->size	= pix->sizeimage; /* real frame size */
+			vb->width	= pix->width;
+			vb->height	= pix->height;
+			rc = videobuf_iolock(q, vb, NULL);
+			if (rc < 0)
+				return rc;
+		}
+		break;
+	case V4L2_BUF_TYPE_VBI_CAPTURE:
+		if (VIDEOBUF_NEEDS_INIT == vb->state) {
+			vb->size	= front->pd->vbi_data.vbi_size;
+			rc = videobuf_iolock(q, vb, NULL);
+			if (rc < 0)
+				return rc;
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
+	vb->field = field;
+	vb->state = VIDEOBUF_PREPARED;
+	return 0;
+}
+
+static int fire_all_urb(struct video_data *video)
+{
+	int i, ret;
+
+	video->is_streaming = 1;
+
+	for (i = 0; i < SBUF_NUM; i++) {
+		ret = usb_submit_urb(video->urb_array[i], GFP_KERNEL);
+		if (ret)
+			log("(%d) failed: error %d", i, ret);
+	}
+	return ret;
+}
+
+static int start_video_stream(struct poseidon *pd)
+{
+	struct video_data *video = &pd->video_data;
+	s32 cmd_status;
+
+	send_set_req(pd, TAKE_REQUEST, 0, &cmd_status);
+	send_set_req(pd, PLAY_SERVICE, TLG_TUNE_PLAY_SVC_START, &cmd_status);
+
+	if (pd->cur_transfer_mode) {
+		prepare_iso_urb(video);
+		INIT_WORK(&video->bubble_work, iso_bubble_handler);
+	} else {
+		/* The bulk mode does not need a bubble handler */
+		prepare_bulk_urb(video);
+	}
+	fire_all_urb(video);
+	return 0;
+}
+
+static int pd_buf_setup(struct videobuf_queue *q, unsigned int *count,
+		       unsigned int *size)
+{
+	struct front_face *front = q->priv_data;
+	struct poseidon *pd	= front->pd;
+
+	switch (front->type) {
+	default:
+		return -EINVAL;
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+		struct video_data *video = &pd->video_data;
+		struct v4l2_pix_format *pix = &video->context.pix;
+
+		*size = PAGE_ALIGN(pix->sizeimage);/* page aligned frame size */
+		if (*count < 4)
+			*count = 4;
+		if (1) {
+			/* same in different altersetting */
+			video->endpoint_addr	= 0x82;
+			video->vbi		= &pd->vbi_data;
+			video->vbi->video	= video;
+			video->pd		= pd;
+			video->lines_per_field	= pix->height / 2;
+			video->lines_size	= pix->width * 2;
+			video->front 		= front;
+		}
+		return start_video_stream(pd);
+	}
+
+	case V4L2_BUF_TYPE_VBI_CAPTURE: {
+		struct vbi_data *vbi = &pd->vbi_data;
+
+		*size = PAGE_ALIGN(vbi->vbi_size);
+		log("size : %d", *size);
+		if (*count == 0)
+			*count = 4;
+	}
+		break;
+	}
+	return 0;
+}
+
+static struct videobuf_queue_ops pd_video_qops = {
+	.buf_setup      = pd_buf_setup,
+	.buf_prepare    = pd_buf_prepare,
+	.buf_queue      = pd_buf_queue,
+	.buf_release    = pd_buf_release,
+};
+
+static int vidioc_enum_fmt(struct file *file, void *fh,
+				struct v4l2_fmtdesc *f)
+{
+	if (ARRAY_SIZE(poseidon_formats) <= f->index)
+		return -EINVAL;
+	f->type		= V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	f->flags	= 0;
+	f->pixelformat	= poseidon_formats[f->index].fourcc;
+	strcpy(f->description, poseidon_formats[f->index].name);
+	return 0;
+}
+
+static int vidioc_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+	struct front_face *front = fh;
+	struct poseidon *pd = front->pd;
+
+	logs(front);
+	f->fmt.pix = pd->video_data.context.pix;
+	return 0;
+}
+
+static int vidioc_try_fmt(struct file *file, void *fh,
+		struct v4l2_format *f)
+{
+	return 0;
+}
+
+/*
+ * VLC calls VIDIOC_S_STD before VIDIOC_S_FMT, while
+ * Mplayer calls them in the reverse order.
+ */
+static int pd_vidioc_s_fmt(struct poseidon *pd, struct v4l2_pix_format *pix)
+{
+	struct video_data *video	= &pd->video_data;
+	struct running_context *context = &video->context;
+	struct v4l2_pix_format *pix_def	= &context->pix;
+	s32 ret = 0, cmd_status = 0, vid_resol;
+
+	/* set the pixel format to firmware */
+	if (pix->pixelformat == V4L2_PIX_FMT_RGB565) {
+		vid_resol = TLG_TUNER_VID_FORMAT_RGB_565;
+	} else {
+		pix->pixelformat = V4L2_PIX_FMT_YUYV;
+		vid_resol = TLG_TUNER_VID_FORMAT_YUV;
+	}
+	ret = send_set_req(pd, VIDEO_STREAM_FMT_SEL,
+				vid_resol, &cmd_status);
+
+	/* set the resolution to firmware */
+	vid_resol = TLG_TUNE_VID_RES_720;
+	switch (pix->width) {
+	case 704:
+		vid_resol = TLG_TUNE_VID_RES_704;
+		break;
+	default:
+		pix->width = 720;
+	case 720:
+		break;
+	}
+	ret |= send_set_req(pd, VIDEO_ROSOLU_SEL,
+				vid_resol, &cmd_status);
+	if (ret || cmd_status)
+		return -EBUSY;
+
+	pix_def->pixelformat = pix->pixelformat; /* save it */
+	pix->height = (context->tvnormid & V4L2_STD_525_60) ?  480 : 576;
+
+	/* Compare with the default setting */
+	if ((pix_def->width != pix->width)
+		|| (pix_def->height != pix->height)) {
+		pix_def->width		= pix->width;
+		pix_def->height		= pix->height;
+		pix_def->bytesperline	= pix->width * 2;
+		pix_def->sizeimage 	= pix->width * pix->height * 2;
+	}
+	*pix = *pix_def;
+
+	return 0;
+}
+
+static int vidioc_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+	struct front_face *front	= fh;
+	struct poseidon *pd		= front->pd;
+
+	logs(front);
+	/* stop VBI here */
+	if (V4L2_BUF_TYPE_VIDEO_CAPTURE != f->type)
+		return -EINVAL;
+
+	mutex_lock(&pd->lock);
+	if (pd->file_for_stream == NULL)
+		pd->file_for_stream = file;
+	else if (file != pd->file_for_stream) {
+		mutex_unlock(&pd->lock);
+		return -EINVAL;
+	}
+
+	pd_vidioc_s_fmt(pd, &f->fmt.pix);
+	mutex_unlock(&pd->lock);
+	return 0;
+}
+
+static int vidioc_g_fmt_vbi(struct file *file, void *fh,
+			       struct v4l2_format *v4l2_f)
+{
+	struct front_face *front	= fh;
+	struct poseidon *pd		= front->pd;
+	struct v4l2_vbi_format *vbi_fmt	= &v4l2_f->fmt.vbi;
+
+	vbi_fmt->samples_per_line	= 720 * 2;
+	vbi_fmt->sampling_rate		= 6750000 * 4;
+	vbi_fmt->sample_format		= V4L2_PIX_FMT_GREY;
+	vbi_fmt->offset			= 64 * 4;  /*FIXME: why offset */
+	if (pd->video_data.context.tvnormid & V4L2_STD_525_60) {
+		vbi_fmt->start[0] = 10;
+		vbi_fmt->start[1] = 264;
+		vbi_fmt->count[0] = V4L_NTSC_VBI_LINES;
+		vbi_fmt->count[1] = V4L_NTSC_VBI_LINES;
+	} else {
+		vbi_fmt->start[0] = 6;
+		vbi_fmt->start[1] = 314;
+		vbi_fmt->count[0] = V4L_PAL_VBI_LINES;
+		vbi_fmt->count[1] = V4L_PAL_VBI_LINES;
+	}
+	vbi_fmt->flags = V4L2_VBI_UNSYNC;
+	logs(front);
+	return 0;
+}
+
+static int set_std(struct poseidon *pd, v4l2_std_id *norm)
+{
+	struct video_data *video = &pd->video_data;
+	struct vbi_data *vbi	= &pd->vbi_data;
+	struct running_context *context;
+	struct v4l2_pix_format *pix;
+	s32 i, ret = 0, cmd_status, param;
+	int height;
+
+	for (i = 0; i < POSEIDON_TVNORMS; i++) {
+		if (*norm & poseidon_tvnorms[i].v4l2_id) {
+			param = poseidon_tvnorms[i].tlg_tvnorm;
+			log("name : %s", poseidon_tvnorms[i].name);
+			goto found;
+		}
+	}
+	return -EINVAL;
+found:
+	mutex_lock(&pd->lock);
+	ret = send_set_req(pd, VIDEO_STD_SEL, param, &cmd_status);
+	if (ret || cmd_status)
+		goto out;
+
+	/* Set vbi size and check the height of the frame */
+	context = &video->context;
+	context->tvnormid = poseidon_tvnorms[i].v4l2_id;
+	if (context->tvnormid & V4L2_STD_525_60) {
+		vbi->vbi_size = V4L_NTSC_VBI_FRAMESIZE;
+		height = 480;
+	} else {
+		vbi->vbi_size = V4L_PAL_VBI_FRAMESIZE;
+		height = 576;
+	}
+
+	pix = &context->pix;
+	if (pix->height != height) {
+		pix->height	= height;
+		pix->sizeimage 	= pix->width * pix->height * 2;
+	}
+
+out:
+	mutex_unlock(&pd->lock);
+	return ret;
+}
+
+static int vidioc_s_std(struct file *file, void *fh, v4l2_std_id *norm)
+{
+	struct front_face *front = fh;
+	logs(front);
+	return set_std(front->pd, norm);
+}
+
+static int vidioc_enum_input(struct file *file, void *fh, struct v4l2_input *in)
+{
+	struct front_face *front = fh;
+
+	if (in->index < 0 || in->index >= POSEIDON_INPUTS)
+		return -EINVAL;
+	strcpy(in->name, pd_inputs[in->index].name);
+	in->type  = V4L2_INPUT_TYPE_TUNER;
+
+	/*
+	 * the audio input index mixed with this video input,
+	 * Poseidon only have one audio/video, set to "0"
+	 */
+	in->audioset	= 0;
+	in->tuner	= 0;
+	in->std		= V4L2_STD_ALL;
+	in->status	= 0;
+	logs(front);
+	return 0;
+}
+
+static int vidioc_g_input(struct file *file, void *fh, unsigned int *i)
+{
+	struct front_face *front = fh;
+	struct poseidon *pd = front->pd;
+	struct running_context *context = &pd->video_data.context;
+
+	logs(front);
+	*i = context->sig_index;
+	return 0;
+}
+
+/* We can support several inputs */
+static int vidioc_s_input(struct file *file, void *fh, unsigned int i)
+{
+	struct front_face *front = fh;
+	struct poseidon *pd = front->pd;
+	s32 ret, cmd_status;
+
+	if (i < 0 || i >= POSEIDON_INPUTS)
+		return -EINVAL;
+	ret = send_set_req(pd, SGNL_SRC_SEL,
+			pd_inputs[i].tlg_src, &cmd_status);
+	if (ret)
+		return ret;
+
+	pd->video_data.context.sig_index = i;
+	return 0;
+}
+
+static struct poseidon_control *check_control_id(__u32 id)
+{
+	struct poseidon_control *control = &controls[0];
+	int array_size = ARRAY_SIZE(controls);
+
+	for (; control < &controls[array_size]; control++)
+		if (control->v4l2_ctrl.id  == id)
+			return control;
+	return NULL;
+}
+
+static int vidioc_queryctrl(struct file *file, void *fh,
+			struct v4l2_queryctrl *a)
+{
+	struct poseidon_control *control = NULL;
+
+	control = check_control_id(a->id);
+	if (!control)
+		return -EINVAL;
+
+	*a = control->v4l2_ctrl;
+	return 0;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
+{
+	struct front_face *front = fh;
+	struct poseidon *pd = front->pd;
+	struct poseidon_control *control = NULL;
+	struct tuner_custom_parameter_s tuner_param;
+	s32 ret = 0, cmd_status;
+
+	control = check_control_id(ctrl->id);
+	if (!control)
+		return -EINVAL;
+
+	mutex_lock(&pd->lock);
+	ret = send_get_req(pd, TUNER_CUSTOM_PARAMETER, control->vc_id,
+			&tuner_param, &cmd_status, sizeof(tuner_param));
+	mutex_unlock(&pd->lock);
+
+	if (ret || cmd_status)
+		return -1;
+
+	ctrl->value = tuner_param.param_value;
+	return 0;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
+{
+	struct tuner_custom_parameter_s param = {0};
+	struct poseidon_control *control = NULL;
+	struct front_face *front	= fh;
+	struct poseidon *pd		= front->pd;
+	s32 ret = 0, cmd_status, params;
+
+	control = check_control_id(a->id);
+	if (!control)
+		return -EINVAL;
+
+	param.param_value = a->value;
+	param.param_id	= control->vc_id;
+	params = *(s32 *)&param; /* temp code */
+
+	mutex_lock(&pd->lock);
+	ret = send_set_req(pd, TUNER_CUSTOM_PARAMETER, params, &cmd_status);
+	ret = send_set_req(pd, TAKE_REQUEST, 0, &cmd_status);
+	mutex_unlock(&pd->lock);
+
+	set_current_state(TASK_INTERRUPTIBLE);
+	schedule_timeout(HZ/4);
+	return ret;
+}
+
+/* Audio ioctls */
+static int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *a)
+{
+	if (0 != a->index)
+		return -EINVAL;
+	a->capability = V4L2_AUDCAP_STEREO;
+	strcpy(a->name, "USB audio in");
+	/*Poseidon have no AVL function.*/
+	a->mode = 0;
+	return 0;
+}
+
+static int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *a)
+{
+	a->index = 0;
+	a->capability = V4L2_AUDCAP_STEREO;
+	strcpy(a->name, "USB audio in");
+	a->mode = 0;
+	return 0;
+}
+
+static int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *a)
+{
+	return (0 == a->index) ? 0 : -EINVAL;
+}
+
+/* Tuner ioctls */
+static int vidioc_g_tuner(struct file *file, void *fh, struct v4l2_tuner *tuner)
+{
+	struct front_face *front	= fh;
+	struct poseidon *pd		= front->pd;
+	struct tuner_atv_sig_stat_s atv_stat;
+	s32 count = 5, ret, cmd_status;
+	int index;
+
+	if (0 != tuner->index)
+		return -EINVAL;
+
+	mutex_lock(&pd->lock);
+	ret = send_get_req(pd, TUNER_STATUS, TLG_MODE_ANALOG_TV,
+				&atv_stat, &cmd_status, sizeof(atv_stat));
+
+	while (atv_stat.sig_lock_busy && count-- && !ret) {
+		set_current_state(TASK_INTERRUPTIBLE);
+		schedule_timeout(HZ);
+
+		ret = send_get_req(pd, TUNER_STATUS, TLG_MODE_ANALOG_TV,
+				&atv_stat, &cmd_status, sizeof(atv_stat));
+	}
+	mutex_unlock(&pd->lock);
+
+	if (debug_mode)
+		log("P:%d,S:%d", atv_stat.sig_present, atv_stat.sig_strength);
+
+	if (ret || cmd_status)
+		tuner->signal = 0;
+	else if (atv_stat.sig_present && !atv_stat.sig_strength)
+		tuner->signal = 0xFFFF;
+	else
+		tuner->signal = (atv_stat.sig_strength * 255 / 10) << 8;
+
+	strcpy(tuner->name, "Telegent Systems");
+	tuner->type = V4L2_TUNER_ANALOG_TV;
+	tuner->rangelow = TUNER_FREQ_MIN / 62500;
+	tuner->rangehigh = TUNER_FREQ_MAX / 62500;
+	tuner->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
+				V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
+	index = pd->video_data.context.audio_idx;
+	tuner->rxsubchans = pd_audio_modes[index].v4l2_audio_sub;
+	tuner->audmode = pd_audio_modes[index].v4l2_audio_mode;
+	tuner->afc = 0;
+	logs(front);
+	return 0;
+}
+
+static int pd_vidioc_s_tuner(struct poseidon *pd, int index)
+{
+	s32 ret = 0, cmd_status, param, audiomode;
+
+	mutex_lock(&pd->lock);
+	param = pd_audio_modes[index].tlg_audio_mode;
+	ret = send_set_req(pd, TUNER_AUD_MODE, param, &cmd_status);
+	audiomode = get_audio_std(pd->video_data.context.tvnormid);
+	ret |= send_set_req(pd, TUNER_AUD_ANA_STD, audiomode,
+				&cmd_status);
+	if (!ret)
+		pd->video_data.context.audio_idx = index;
+	mutex_unlock(&pd->lock);
+	return ret;
+}
+
+static int vidioc_s_tuner(struct file *file, void *fh, struct v4l2_tuner *a)
+{
+	struct front_face *front	= fh;
+	struct poseidon *pd		= front->pd;
+	int index;
+
+	if (0 != a->index)
+		return -EINVAL;
+	logs(front);
+	for (index = 0; index < POSEIDON_AUDIOMODS; index++)
+		if (a->audmode == pd_audio_modes[index].v4l2_audio_mode)
+			return pd_vidioc_s_tuner(pd, index);
+	return -EINVAL;
+}
+
+static int vidioc_g_frequency(struct file *file, void *fh,
+			struct v4l2_frequency *freq)
+{
+	struct front_face *front = fh;
+	struct poseidon *pd = front->pd;
+	struct running_context *context = &pd->video_data.context;
+
+	if (0 != freq->tuner)
+		return -EINVAL;
+	freq->frequency = context->freq;
+	freq->type = V4L2_TUNER_ANALOG_TV;
+	return 0;
+}
+
+static int set_frequency(struct poseidon *pd, __u32 frequency)
+{
+	s32 ret = 0, param, cmd_status;
+	struct running_context *context = &pd->video_data.context;
+
+	param = frequency * 62500 / 1000;
+	if (param < TUNER_FREQ_MIN/1000 || param > TUNER_FREQ_MAX / 1000)
+		return -EINVAL;
+
+	mutex_lock(&pd->lock);
+	ret = send_set_req(pd, TUNE_FREQ_SELECT, param, &cmd_status);
+	ret = send_set_req(pd, TAKE_REQUEST, 0, &cmd_status);
+
+	msleep(250); /* wait for a while until the hardware is ready. */
+	context->freq = frequency;
+	mutex_unlock(&pd->lock);
+	return ret;
+}
+
+static int vidioc_s_frequency(struct file *file, void *fh,
+				struct v4l2_frequency *freq)
+{
+	struct front_face *front = fh;
+	struct poseidon *pd = front->pd;
+
+	logs(front);
+#ifdef CONFIG_PM
+	pd->pm_suspend = pm_video_suspend;
+	pd->pm_resume = pm_video_resume;
+#endif
+	return set_frequency(pd, freq->frequency);
+}
+
+static int vidioc_reqbufs(struct file *file, void *fh,
+				struct v4l2_requestbuffers *b)
+{
+	struct front_face *front = file->private_data;
+	logs(front);
+	return videobuf_reqbufs(&front->q, b);
+}
+
+static int vidioc_querybuf(struct file *file, void *fh, struct v4l2_buffer *b)
+{
+	struct front_face *front = file->private_data;
+	logs(front);
+	return videobuf_querybuf(&front->q, b);
+}
+
+static int vidioc_qbuf(struct file *file, void *fh, struct v4l2_buffer *b)
+{
+	struct front_face *front = file->private_data;
+	return videobuf_qbuf(&front->q, b);
+}
+
+static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
+{
+	struct front_face *front = file->private_data;
+	return videobuf_dqbuf(&front->q, b, file->f_flags & O_NONBLOCK);
+}
+
+/* Just stop the URBs, do not free the URBs */
+static int usb_transfer_stop(struct video_data *video)
+{
+	if (video->is_streaming) {
+		int i;
+		s32 cmd_status;
+		struct poseidon *pd = video->pd;
+
+		video->is_streaming = 0;
+		for (i = 0; i < SBUF_NUM; ++i) {
+			if (video->urb_array[i])
+				usb_kill_urb(video->urb_array[i]);
+		}
+
+		send_set_req(pd, PLAY_SERVICE, TLG_TUNE_PLAY_SVC_STOP,
+			       &cmd_status);
+	}
+	return 0;
+}
+
+int stop_all_video_stream(struct poseidon *pd)
+{
+	struct video_data *video = &pd->video_data;
+	struct vbi_data *vbi	= &pd->vbi_data;
+
+	mutex_lock(&pd->lock);
+	if (video->is_streaming) {
+		struct front_face *front = video->front;
+
+		/* stop the URBs */
+		usb_transfer_stop(video);
+		free_all_urb(video);
+
+		/* stop the host side of VIDEO */
+		videobuf_stop(&front->q);
+		videobuf_mmap_free(&front->q);
+
+		/* stop the host side of VBI */
+		front = vbi->front;
+		if (front) {
+			videobuf_stop(&front->q);
+			videobuf_mmap_free(&front->q);
+		}
+	}
+	mutex_unlock(&pd->lock);
+	return 0;
+}
+
+/*
+ * The bubbles can seriously damage the video's quality,
+ * though it occurs in very rare situation.
+ */
+static void iso_bubble_handler(struct work_struct *w)
+{
+	struct video_data *video;
+	struct poseidon *pd;
+
+	video = container_of(w, struct video_data, bubble_work);
+	pd = video->pd;
+
+	mutex_lock(&pd->lock);
+	usb_transfer_stop(video);
+	msleep(500);
+	start_video_stream(pd);
+	mutex_unlock(&pd->lock);
+}
+
+
+static int vidioc_streamon(struct file *file, void *fh,
+				enum v4l2_buf_type type)
+{
+	struct front_face *front = fh;
+
+	logs(front);
+	if (unlikely(type != front->type))
+		return -EINVAL;
+	return videobuf_streamon(&front->q);
+}
+
+static int vidioc_streamoff(struct file *file, void *fh,
+				enum v4l2_buf_type type)
+{
+	struct front_face *front = file->private_data;
+
+	logs(front);
+	if (unlikely(type != front->type))
+		return -EINVAL;
+	return videobuf_streamoff(&front->q);
+}
+
+/* Set the firmware's default values : need altersetting */
+static int pd_video_checkmode(struct poseidon *pd)
+{
+	s32 ret = 0, cmd_status, audiomode;
+
+	set_current_state(TASK_INTERRUPTIBLE);
+	schedule_timeout(HZ/2);
+
+	/* choose the altersetting */
+	ret = usb_set_interface(pd->udev, 0,
+					(pd->cur_transfer_mode ?
+					 ISO_3K_BULK_ALTERNATE_IFACE :
+					 BULK_ALTERNATE_IFACE));
+	if (ret < 0)
+		goto error;
+
+	/* set default parameters for PAL-D , with the VBI enabled*/
+	ret = set_tuner_mode(pd, TLG_MODE_ANALOG_TV);
+	ret |= send_set_req(pd, SGNL_SRC_SEL,
+				TLG_SIG_SRC_ANTENNA, &cmd_status);
+	ret |= send_set_req(pd, VIDEO_STD_SEL,
+				TLG_TUNE_VSTD_PAL_D, &cmd_status);
+	ret |= send_set_req(pd, VIDEO_STREAM_FMT_SEL,
+				TLG_TUNER_VID_FORMAT_YUV, &cmd_status);
+	ret |= send_set_req(pd, VIDEO_ROSOLU_SEL,
+				TLG_TUNE_VID_RES_720, &cmd_status);
+	ret |= send_set_req(pd, TUNE_FREQ_SELECT, TUNER_FREQ_MIN, &cmd_status);
+	ret |= send_set_req(pd, VBI_DATA_SEL, 1, &cmd_status);/* enable vbi */
+
+	/* set the audio */
+	audiomode = get_audio_std(pd->video_data.context.tvnormid);
+	ret |= send_set_req(pd, TUNER_AUD_ANA_STD, audiomode, &cmd_status);
+	ret |= send_set_req(pd, TUNER_AUD_MODE,
+				TLG_TUNE_TVAUDIO_MODE_STEREO, &cmd_status);
+	ret |= send_set_req(pd, AUDIO_SAMPLE_RATE_SEL,
+				ATV_AUDIO_RATE_48K, &cmd_status);
+error:
+	return ret;
+}
+
+#ifdef CONFIG_PM
+static int pm_video_suspend(struct poseidon *pd)
+{
+	/* stop audio */
+	pm_alsa_suspend(pd);
+
+	/* stop and free all the URBs */
+	usb_transfer_stop(&pd->video_data);
+	free_all_urb(&pd->video_data);
+
+	/* reset the interface */
+	usb_set_interface(pd->udev, 0, 0);
+	msleep(300);
+	return 0;
+}
+
+static int restore_v4l2_context(struct poseidon *pd,
+				struct running_context *context)
+{
+	struct front_face *front = pd->video_data.front;
+
+	pd_video_checkmode(pd);
+
+	set_std(pd, &context->tvnormid);
+	vidioc_s_input(NULL, front, context->sig_index);
+	pd_vidioc_s_tuner(pd, context->audio_idx);
+	pd_vidioc_s_fmt(pd, &context->pix);
+	set_frequency(pd, context->freq);
+	return 0;
+}
+
+static int pm_video_resume(struct poseidon *pd)
+{
+	struct video_data *video = &pd->video_data;
+
+	/* resume the video */
+	/* [1] restore the origin V4L2 parameters */
+	restore_v4l2_context(pd, &video->context);
+
+	/* [2] initiate video copy variables */
+	if (video->front->curr_frame)
+		init_copy(video, 0);
+
+	/* [3] fire urbs	*/
+	start_video_stream(pd);
+
+	/* resume the audio */
+	pm_alsa_resume(pd);
+	return 0;
+}
+#endif
+
+void set_debug_mode(struct video_device *vfd, int debug_mode)
+{
+	vfd->debug = 0;
+	if (debug_mode & 0x1)
+		vfd->debug = V4L2_DEBUG_IOCTL;
+	if (debug_mode & 0x2)
+		vfd->debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
+}
+
+static void init_video_context(struct running_context *context)
+{
+	context->sig_index	= 0;
+	context->audio_idx	= 1; /* stereo */
+	context->tvnormid  	= V4L2_STD_PAL_D;
+	context->pix = (struct v4l2_pix_format) {
+				.width		= 720,
+				.height		= 576,
+				.pixelformat	= V4L2_PIX_FMT_YUYV,
+				.field		= V4L2_FIELD_INTERLACED,
+				.bytesperline	= 720 * 2,
+				.sizeimage	= 720 * 576 * 2,
+				.colorspace	= V4L2_COLORSPACE_SMPTE170M,
+				.priv		= 0
+			};
+}
+
+static int pd_video_open(struct file *file)
+{
+	struct video_device *vfd = video_devdata(file);
+	struct poseidon *pd = video_get_drvdata(vfd);
+	struct front_face *front = NULL;
+	int ret = -ENOMEM;
+
+	mutex_lock(&pd->lock);
+	usb_autopm_get_interface(pd->interface);
+
+	if (vfd->vfl_type == VFL_TYPE_GRABBER
+		&& !(pd->state & POSEIDON_STATE_ANALOG)) {
+		front = kzalloc(sizeof(struct front_face), GFP_KERNEL);
+		if (!front)
+			goto out;
+
+		pd->cur_transfer_mode	= usb_transfer_mode;/* bulk or iso */
+		init_video_context(&pd->video_data.context);
+
+		ret = pd_video_checkmode(pd);
+		if (ret < 0) {
+			kfree(front);
+			ret = -1;
+			goto out;
+		}
+
+		pd->state		|= POSEIDON_STATE_ANALOG;
+		front->type		= V4L2_BUF_TYPE_VIDEO_CAPTURE;
+		pd->video_data.users++;
+		set_debug_mode(vfd, debug_mode);
+
+		videobuf_queue_vmalloc_init(&front->q, &pd_video_qops,
+				NULL, &front->queue_lock,
+				V4L2_BUF_TYPE_VIDEO_CAPTURE,
+				V4L2_FIELD_INTERLACED,/* video is interlacd */
+				sizeof(struct videobuf_buffer),/*it's enough*/
+				front, NULL);
+	} else if (vfd->vfl_type == VFL_TYPE_VBI
+		&& !(pd->state & POSEIDON_STATE_VBI)) {
+		front = kzalloc(sizeof(struct front_face), GFP_KERNEL);
+		if (!front)
+			goto out;
+
+		pd->state	|= POSEIDON_STATE_VBI;
+		front->type	= V4L2_BUF_TYPE_VBI_CAPTURE;
+		pd->vbi_data.front = front;
+		pd->vbi_data.users++;
+
+		videobuf_queue_vmalloc_init(&front->q, &pd_video_qops,
+				NULL, &front->queue_lock,
+				V4L2_BUF_TYPE_VBI_CAPTURE,
+				V4L2_FIELD_NONE, /* vbi is NONE mode */
+				sizeof(struct videobuf_buffer),
+				front, NULL);
+	} else {
+		/* maybe add FM support here */
+		log("other ");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	front->pd		= pd;
+	front->curr_frame	= NULL;
+	INIT_LIST_HEAD(&front->active);
+	spin_lock_init(&front->queue_lock);
+
+	file->private_data	= front;
+	kref_get(&pd->kref);
+
+	mutex_unlock(&pd->lock);
+	return 0;
+out:
+	usb_autopm_put_interface(pd->interface);
+	mutex_unlock(&pd->lock);
+	return ret;
+}
+
+static int pd_video_release(struct file *file)
+{
+	struct front_face *front = file->private_data;
+	struct poseidon *pd = front->pd;
+	s32 cmd_status = 0;
+
+	logs(front);
+	mutex_lock(&pd->lock);
+
+	if (front->type	== V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+		pd->state &= ~POSEIDON_STATE_ANALOG;
+
+		/* stop the device, and free the URBs */
+		usb_transfer_stop(&pd->video_data);
+		free_all_urb(&pd->video_data);
+
+		/* stop the firmware */
+		send_set_req(pd, PLAY_SERVICE, TLG_TUNE_PLAY_SVC_STOP,
+			       &cmd_status);
+
+		pd->file_for_stream = NULL;
+		pd->video_data.users--;
+	} else if (front->type	== V4L2_BUF_TYPE_VBI_CAPTURE) {
+		pd->state &= ~POSEIDON_STATE_VBI;
+		pd->vbi_data.front = NULL;
+		pd->vbi_data.users--;
+	}
+	videobuf_stop(&front->q);
+	videobuf_mmap_free(&front->q);
+
+	usb_autopm_put_interface(pd->interface);
+	mutex_unlock(&pd->lock);
+
+	kfree(front);
+	file->private_data = NULL;
+	kref_put(&pd->kref, poseidon_delete);
+	return 0;
+}
+
+static int pd_video_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct front_face *front = file->private_data;
+	return  videobuf_mmap_mapper(&front->q, vma);
+}
+
+static unsigned int pd_video_poll(struct file *file, poll_table *table)
+{
+	struct front_face *front = file->private_data;
+	return videobuf_poll_stream(file, &front->q, table);
+}
+
+static ssize_t pd_video_read(struct file *file, char __user *buffer,
+			size_t count, loff_t *ppos)
+{
+	struct front_face *front = file->private_data;
+	return videobuf_read_stream(&front->q, buffer, count, ppos,
+				0, file->f_flags & O_NONBLOCK);
+}
+
+/* This struct works for both VIDEO and VBI */
+static const struct v4l2_file_operations pd_video_fops = {
+	.owner		= THIS_MODULE,
+	.open		= pd_video_open,
+	.release	= pd_video_release,
+	.read		= pd_video_read,
+	.poll		= pd_video_poll,
+	.mmap		= pd_video_mmap,
+	.ioctl		= video_ioctl2, /* maybe changed in future */
+};
+
+static const struct v4l2_ioctl_ops pd_video_ioctl_ops = {
+	.vidioc_querycap	= vidioc_querycap,
+
+	/* Video format */
+	.vidioc_g_fmt_vid_cap	= vidioc_g_fmt,
+	.vidioc_enum_fmt_vid_cap	= vidioc_enum_fmt,
+	.vidioc_s_fmt_vid_cap	= vidioc_s_fmt,
+	.vidioc_g_fmt_vbi_cap	= vidioc_g_fmt_vbi, /* VBI */
+	.vidioc_try_fmt_vid_cap = vidioc_try_fmt,
+
+	/* Input */
+	.vidioc_g_input		= vidioc_g_input,
+	.vidioc_s_input		= vidioc_s_input,
+	.vidioc_enum_input	= vidioc_enum_input,
+
+	/* Audio ioctls */
+	.vidioc_enumaudio	= vidioc_enumaudio,
+	.vidioc_g_audio		= vidioc_g_audio,
+	.vidioc_s_audio		= vidioc_s_audio,
+
+	/* Tuner ioctls */
+	.vidioc_g_tuner		= vidioc_g_tuner,
+	.vidioc_s_tuner		= vidioc_s_tuner,
+	.vidioc_s_std		= vidioc_s_std,
+	.vidioc_g_frequency	= vidioc_g_frequency,
+	.vidioc_s_frequency	= vidioc_s_frequency,
+
+	/* Buffer handlers */
+	.vidioc_reqbufs		= vidioc_reqbufs,
+	.vidioc_querybuf	= vidioc_querybuf,
+	.vidioc_qbuf		= vidioc_qbuf,
+	.vidioc_dqbuf		= vidioc_dqbuf,
+
+	/* Stream on/off */
+	.vidioc_streamon	= vidioc_streamon,
+	.vidioc_streamoff	= vidioc_streamoff,
+
+	/* Control handling */
+	.vidioc_queryctrl	= vidioc_queryctrl,
+	.vidioc_g_ctrl		= vidioc_g_ctrl,
+	.vidioc_s_ctrl		= vidioc_s_ctrl,
+};
+
+static struct video_device pd_video_template = {
+	.name = "Telegent-Video",
+	.fops = &pd_video_fops,
+	.minor = -1,
+	.release = video_device_release,
+	.tvnorms = V4L2_STD_ALL,
+	.ioctl_ops = &pd_video_ioctl_ops,
+};
+
+struct video_device *vdev_init(struct poseidon *pd, struct video_device *tmp)
+{
+	struct video_device *vfd;
+
+	vfd = video_device_alloc();
+	if (vfd == NULL)
+		return NULL;
+	*vfd		= *tmp;
+	vfd->minor	= -1;
+	vfd->v4l2_dev	= &pd->v4l2_dev;
+	/*vfd->parent	= &(pd->udev->dev); */
+	vfd->release	= video_device_release;
+	video_set_drvdata(vfd, pd);
+	return vfd;
+}
+
+void destroy_video_device(struct video_device **v_dev)
+{
+	struct video_device *dev = *v_dev;
+
+	if (dev == NULL)
+		return;
+
+	if (video_is_registered(dev))
+		video_unregister_device(dev);
+	else
+		video_device_release(dev);
+	*v_dev = NULL;
+}
+
+void pd_video_exit(struct poseidon *pd)
+{
+	struct video_data *video = &pd->video_data;
+	struct vbi_data *vbi = &pd->vbi_data;
+
+	destroy_video_device(&video->v_dev);
+	destroy_video_device(&vbi->v_dev);
+	log();
+}
+
+int pd_video_init(struct poseidon *pd)
+{
+	struct video_data *video = &pd->video_data;
+	struct vbi_data *vbi	= &pd->vbi_data;
+	int ret = -ENOMEM;
+
+	video->v_dev = vdev_init(pd, &pd_video_template);
+	if (video->v_dev == NULL)
+		goto out;
+
+	ret = video_register_device(video->v_dev, VFL_TYPE_GRABBER, -1);
+	if (ret != 0)
+		goto out;
+
+	/* VBI uses the same template as video */
+	vbi->v_dev = vdev_init(pd, &pd_video_template);
+	if (vbi->v_dev == NULL) {
+		ret = -ENOMEM;
+		goto out;
+	}
+	ret = video_register_device(vbi->v_dev, VFL_TYPE_VBI, -1);
+	if (ret != 0)
+		goto out;
+	log("register VIDEO/VBI devices");
+	return 0;
+out:
+	log("VIDEO/VBI devices register failed, : %d", ret);
+	pd_video_exit(pd);
+	return ret;
+}
+