[media] move the remaining USB drivers to drivers/media/usb

Move the 3 remaining usb drivers to their proper space.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 0 insertions, 2689 deletions

diff --git a/drivers/media/video/s2255drv.c b/drivers/media/video/s2255drv.c
deleted file mode 100644
index 6c7960cc7506..000000000000
--- a/drivers/media/video/s2255drv.c
+++ /dev/null
@@ -1,2689 +0,0 @@
-/*
- *  s2255drv.c - a driver for the Sensoray 2255 USB video capture device
- *
- *   Copyright (C) 2007-2010 by Sensoray Company Inc.
- *                              Dean Anderson
- *
- * Some video buffer code based on vivi driver:
- *
- * Sensoray 2255 device supports 4 simultaneous channels.
- * The channels are not "crossbar" inputs, they are physically
- * attached to separate video decoders.
- *
- * Because of USB2.0 bandwidth limitations. There is only a
- * certain amount of data which may be transferred at one time.
- *
- * Example maximum bandwidth utilization:
- *
- * -full size, color mode YUYV or YUV422P: 2 channels at once
- * -full or half size Grey scale: all 4 channels at once
- * -half size, color mode YUYV or YUV422P: all 4 channels at once
- * -full size, color mode YUYV or YUV422P 1/2 frame rate: all 4 channels
- *  at once.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/firmware.h>
-#include <linux/kernel.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/videodev2.h>
-#include <linux/mm.h>
-#include <media/videobuf-vmalloc.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include <linux/vmalloc.h>
-#include <linux/usb.h>
-
-#define S2255_VERSION		"1.22.1"
-#define FIRMWARE_FILE_NAME "f2255usb.bin"
-
-/* default JPEG quality */
-#define S2255_DEF_JPEG_QUAL     50
-/* vendor request in */
-#define S2255_VR_IN		0
-/* vendor request out */
-#define S2255_VR_OUT		1
-/* firmware query */
-#define S2255_VR_FW		0x30
-/* USB endpoint number for configuring the device */
-#define S2255_CONFIG_EP         2
-/* maximum time for DSP to start responding after last FW word loaded(ms) */
-#define S2255_DSP_BOOTTIME      800
-/* maximum time to wait for firmware to load (ms) */
-#define S2255_LOAD_TIMEOUT      (5000 + S2255_DSP_BOOTTIME)
-#define S2255_DEF_BUFS          16
-#define S2255_SETMODE_TIMEOUT   500
-#define S2255_VIDSTATUS_TIMEOUT 350
-#define S2255_MARKER_FRAME	cpu_to_le32(0x2255DA4AL)
-#define S2255_MARKER_RESPONSE	cpu_to_le32(0x2255ACACL)
-#define S2255_RESPONSE_SETMODE  cpu_to_le32(0x01)
-#define S2255_RESPONSE_FW       cpu_to_le32(0x10)
-#define S2255_RESPONSE_STATUS   cpu_to_le32(0x20)
-#define S2255_USB_XFER_SIZE	(16 * 1024)
-#define MAX_CHANNELS		4
-#define SYS_FRAMES		4
-/* maximum size is PAL full size plus room for the marker header(s) */
-#define SYS_FRAMES_MAXSIZE	(720*288*2*2 + 4096)
-#define DEF_USB_BLOCK		S2255_USB_XFER_SIZE
-#define LINE_SZ_4CIFS_NTSC	640
-#define LINE_SZ_2CIFS_NTSC	640
-#define LINE_SZ_1CIFS_NTSC	320
-#define LINE_SZ_4CIFS_PAL	704
-#define LINE_SZ_2CIFS_PAL	704
-#define LINE_SZ_1CIFS_PAL	352
-#define NUM_LINES_4CIFS_NTSC	240
-#define NUM_LINES_2CIFS_NTSC	240
-#define NUM_LINES_1CIFS_NTSC	240
-#define NUM_LINES_4CIFS_PAL	288
-#define NUM_LINES_2CIFS_PAL	288
-#define NUM_LINES_1CIFS_PAL	288
-#define LINE_SZ_DEF		640
-#define NUM_LINES_DEF		240
-
-
-/* predefined settings */
-#define FORMAT_NTSC	1
-#define FORMAT_PAL	2
-
-#define SCALE_4CIFS	1	/* 640x480(NTSC) or 704x576(PAL) */
-#define SCALE_2CIFS	2	/* 640x240(NTSC) or 704x288(PAL) */
-#define SCALE_1CIFS	3	/* 320x240(NTSC) or 352x288(PAL) */
-/* SCALE_4CIFSI is the 2 fields interpolated into one */
-#define SCALE_4CIFSI	4	/* 640x480(NTSC) or 704x576(PAL) high quality */
-
-#define COLOR_YUVPL	1	/* YUV planar */
-#define COLOR_YUVPK	2	/* YUV packed */
-#define COLOR_Y8	4	/* monochrome */
-#define COLOR_JPG       5       /* JPEG */
-
-#define MASK_COLOR       0x000000ff
-#define MASK_JPG_QUALITY 0x0000ff00
-#define MASK_INPUT_TYPE  0x000f0000
-/* frame decimation. */
-#define FDEC_1		1	/* capture every frame. default */
-#define FDEC_2		2	/* capture every 2nd frame */
-#define FDEC_3		3	/* capture every 3rd frame */
-#define FDEC_5		5	/* capture every 5th frame */
-
-/*-------------------------------------------------------
- * Default mode parameters.
- *-------------------------------------------------------*/
-#define DEF_SCALE	SCALE_4CIFS
-#define DEF_COLOR	COLOR_YUVPL
-#define DEF_FDEC	FDEC_1
-#define DEF_BRIGHT	0
-#define DEF_CONTRAST	0x5c
-#define DEF_SATURATION	0x80
-#define DEF_HUE		0
-
-/* usb config commands */
-#define IN_DATA_TOKEN	cpu_to_le32(0x2255c0de)
-#define CMD_2255	0xc2255000
-#define CMD_SET_MODE	cpu_to_le32((CMD_2255 | 0x10))
-#define CMD_START	cpu_to_le32((CMD_2255 | 0x20))
-#define CMD_STOP	cpu_to_le32((CMD_2255 | 0x30))
-#define CMD_STATUS	cpu_to_le32((CMD_2255 | 0x40))
-
-struct s2255_mode {
-	u32 format;	/* input video format (NTSC, PAL) */
-	u32 scale;	/* output video scale */
-	u32 color;	/* output video color format */
-	u32 fdec;	/* frame decimation */
-	u32 bright;	/* brightness */
-	u32 contrast;	/* contrast */
-	u32 saturation;	/* saturation */
-	u32 hue;	/* hue (NTSC only)*/
-	u32 single;	/* capture 1 frame at a time (!=0), continuously (==0)*/
-	u32 usb_block;	/* block size. should be 4096 of DEF_USB_BLOCK */
-	u32 restart;	/* if DSP requires restart */
-};
-
-
-#define S2255_READ_IDLE		0
-#define S2255_READ_FRAME	1
-
-/* frame structure */
-struct s2255_framei {
-	unsigned long size;
-	unsigned long ulState;	/* ulState:S2255_READ_IDLE, S2255_READ_FRAME*/
-	void *lpvbits;		/* image data */
-	unsigned long cur_size;	/* current data copied to it */
-};
-
-/* image buffer structure */
-struct s2255_bufferi {
-	unsigned long dwFrames;			/* number of frames in buffer */
-	struct s2255_framei frame[SYS_FRAMES];	/* array of FRAME structures */
-};
-
-#define DEF_MODEI_NTSC_CONT	{FORMAT_NTSC, DEF_SCALE, DEF_COLOR,	\
-			DEF_FDEC, DEF_BRIGHT, DEF_CONTRAST, DEF_SATURATION, \
-			DEF_HUE, 0, DEF_USB_BLOCK, 0}
-
-struct s2255_dmaqueue {
-	struct list_head	active;
-	struct s2255_dev	*dev;
-};
-
-/* for firmware loading, fw_state */
-#define S2255_FW_NOTLOADED	0
-#define S2255_FW_LOADED_DSPWAIT	1
-#define S2255_FW_SUCCESS	2
-#define S2255_FW_FAILED		3
-#define S2255_FW_DISCONNECTING  4
-#define S2255_FW_MARKER		cpu_to_le32(0x22552f2f)
-/* 2255 read states */
-#define S2255_READ_IDLE         0
-#define S2255_READ_FRAME        1
-struct s2255_fw {
-	int		      fw_loaded;
-	int		      fw_size;
-	struct urb	      *fw_urb;
-	atomic_t	      fw_state;
-	void		      *pfw_data;
-	wait_queue_head_t     wait_fw;
-	const struct firmware *fw;
-};
-
-struct s2255_pipeinfo {
-	u32 max_transfer_size;
-	u32 cur_transfer_size;
-	u8 *transfer_buffer;
-	u32 state;
-	void *stream_urb;
-	void *dev;	/* back pointer to s2255_dev struct*/
-	u32 err_count;
-	u32 idx;
-};
-
-struct s2255_fmt; /*forward declaration */
-struct s2255_dev;
-
-struct s2255_channel {
-	struct video_device	vdev;
-	int			resources;
-	struct s2255_dmaqueue	vidq;
-	struct s2255_bufferi	buffer;
-	struct s2255_mode	mode;
-	/* jpeg compression */
-	struct v4l2_jpegcompression jc;
-	/* capture parameters (for high quality mode full size) */
-	struct v4l2_captureparm cap_parm;
-	int			cur_frame;
-	int			last_frame;
-
-	int			b_acquire;
-	/* allocated image size */
-	unsigned long		req_image_size;
-	/* received packet size */
-	unsigned long		pkt_size;
-	int			bad_payload;
-	unsigned long		frame_count;
-	/* if JPEG image */
-	int                     jpg_size;
-	/* if channel configured to default state */
-	int                     configured;
-	wait_queue_head_t       wait_setmode;
-	int                     setmode_ready;
-	/* video status items */
-	int                     vidstatus;
-	wait_queue_head_t       wait_vidstatus;
-	int                     vidstatus_ready;
-	unsigned int		width;
-	unsigned int		height;
-	const struct s2255_fmt	*fmt;
-	int idx; /* channel number on device, 0-3 */
-};
-
-
-struct s2255_dev {
-	struct s2255_channel    channel[MAX_CHANNELS];
-	struct v4l2_device 	v4l2_dev;
-	atomic_t                num_channels;
-	int			frames;
-	struct mutex		lock;	/* channels[].vdev.lock */
-	struct usb_device	*udev;
-	struct usb_interface	*interface;
-	u8			read_endpoint;
-	struct timer_list	timer;
-	struct s2255_fw	*fw_data;
-	struct s2255_pipeinfo	pipe;
-	u32			cc;	/* current channel */
-	int			frame_ready;
-	int                     chn_ready;
-	spinlock_t              slock;
-	/* dsp firmware version (f2255usb.bin) */
-	int                     dsp_fw_ver;
-	u16                     pid; /* product id */
-};
-
-static inline struct s2255_dev *to_s2255_dev(struct v4l2_device *v4l2_dev)
-{
-	return container_of(v4l2_dev, struct s2255_dev, v4l2_dev);
-}
-
-struct s2255_fmt {
-	char *name;
-	u32 fourcc;
-	int depth;
-};
-
-/* buffer for one video frame */
-struct s2255_buffer {
-	/* common v4l buffer stuff -- must be first */
-	struct videobuf_buffer vb;
-	const struct s2255_fmt *fmt;
-};
-
-struct s2255_fh {
-	struct s2255_dev	*dev;
-	struct videobuf_queue	vb_vidq;
-	enum v4l2_buf_type	type;
-	struct s2255_channel	*channel;
-	int			resources;
-};
-
-/* current cypress EEPROM firmware version */
-#define S2255_CUR_USB_FWVER	((3 << 8) | 12)
-/* current DSP FW version */
-#define S2255_CUR_DSP_FWVER     10104
-/* Need DSP version 5+ for video status feature */
-#define S2255_MIN_DSP_STATUS      5
-#define S2255_MIN_DSP_COLORFILTER 8
-#define S2255_NORMS		(V4L2_STD_PAL | V4L2_STD_NTSC)
-
-/* private V4L2 controls */
-
-/*
- * The following chart displays how COLORFILTER should be set
- *  =========================================================
- *  =     fourcc              =     COLORFILTER             =
- *  =                         ===============================
- *  =                         =   0             =    1      =
- *  =========================================================
- *  =  V4L2_PIX_FMT_GREY(Y8)  = monochrome from = monochrome=
- *  =                         = s-video or      = composite =
- *  =                         = B/W camera      = input     =
- *  =========================================================
- *  =    other                = color, svideo   = color,    =
- *  =                         =                 = composite =
- *  =========================================================
- *
- * Notes:
- *   channels 0-3 on 2255 are composite
- *   channels 0-1 on 2257 are composite, 2-3 are s-video
- * If COLORFILTER is 0 with a composite color camera connected,
- * the output will appear monochrome but hatching
- * will occur.
- * COLORFILTER is different from "color killer" and "color effects"
- * for reasons above.
- */
-#define S2255_V4L2_YC_ON  1
-#define S2255_V4L2_YC_OFF 0
-#define V4L2_CID_PRIVATE_COLORFILTER (V4L2_CID_PRIVATE_BASE + 0)
-
-/* frame prefix size (sent once every frame) */
-#define PREFIX_SIZE		512
-
-/* Channels on box are in reverse order */
-static unsigned long G_chnmap[MAX_CHANNELS] = {3, 2, 1, 0};
-
-static int debug;
-static int *s2255_debug = &debug;
-
-static int s2255_start_readpipe(struct s2255_dev *dev);
-static void s2255_stop_readpipe(struct s2255_dev *dev);
-static int s2255_start_acquire(struct s2255_channel *channel);
-static int s2255_stop_acquire(struct s2255_channel *channel);
-static void s2255_fillbuff(struct s2255_channel *chn, struct s2255_buffer *buf,
-			   int jpgsize);
-static int s2255_set_mode(struct s2255_channel *chan, struct s2255_mode *mode);
-static int s2255_board_shutdown(struct s2255_dev *dev);
-static void s2255_fwload_start(struct s2255_dev *dev, int reset);
-static void s2255_destroy(struct s2255_dev *dev);
-static long s2255_vendor_req(struct s2255_dev *dev, unsigned char req,
-			     u16 index, u16 value, void *buf,
-			     s32 buf_len, int bOut);
-
-/* dev_err macro with driver name */
-#define S2255_DRIVER_NAME "s2255"
-#define s2255_dev_err(dev, fmt, arg...)					\
-		dev_err(dev, S2255_DRIVER_NAME " - " fmt, ##arg)
-
-#define dprintk(level, fmt, arg...)					\
-	do {								\
-		if (*s2255_debug >= (level)) {				\
-			printk(KERN_DEBUG S2255_DRIVER_NAME		\
-				": " fmt, ##arg);			\
-		}							\
-	} while (0)
-
-static struct usb_driver s2255_driver;
-
-/* Declare static vars that will be used as parameters */
-static unsigned int vid_limit = 16;	/* Video memory limit, in Mb */
-
-/* start video number */
-static int video_nr = -1;	/* /dev/videoN, -1 for autodetect */
-
-/* Enable jpeg capture. */
-static int jpeg_enable = 1;
-
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Debug level(0-100) default 0");
-module_param(vid_limit, int, 0644);
-MODULE_PARM_DESC(vid_limit, "video memory limit(Mb)");
-module_param(video_nr, int, 0644);
-MODULE_PARM_DESC(video_nr, "start video minor(-1 default autodetect)");
-module_param(jpeg_enable, int, 0644);
-MODULE_PARM_DESC(jpeg_enable, "Jpeg enable(1-on 0-off) default 1");
-
-/* USB device table */
-#define USB_SENSORAY_VID	0x1943
-static struct usb_device_id s2255_table[] = {
-	{USB_DEVICE(USB_SENSORAY_VID, 0x2255)},
-	{USB_DEVICE(USB_SENSORAY_VID, 0x2257)}, /*same family as 2255*/
-	{ }			/* Terminating entry */
-};
-MODULE_DEVICE_TABLE(usb, s2255_table);
-
-#define BUFFER_TIMEOUT msecs_to_jiffies(400)
-
-/* image formats.  */
-/* JPEG formats must be defined last to support jpeg_enable parameter */
-static const struct s2255_fmt formats[] = {
-	{
-		.name = "4:2:2, planar, YUV422P",
-		.fourcc = V4L2_PIX_FMT_YUV422P,
-		.depth = 16
-
-	}, {
-		.name = "4:2:2, packed, YUYV",
-		.fourcc = V4L2_PIX_FMT_YUYV,
-		.depth = 16
-
-	}, {
-		.name = "4:2:2, packed, UYVY",
-		.fourcc = V4L2_PIX_FMT_UYVY,
-		.depth = 16
-	}, {
-		.name = "8bpp GREY",
-		.fourcc = V4L2_PIX_FMT_GREY,
-		.depth = 8
-	}, {
-		.name = "JPG",
-		.fourcc = V4L2_PIX_FMT_JPEG,
-		.depth = 24
-	}, {
-		.name = "MJPG",
-		.fourcc = V4L2_PIX_FMT_MJPEG,
-		.depth = 24
-	}
-};
-
-static int norm_maxw(struct video_device *vdev)
-{
-	return (vdev->current_norm & V4L2_STD_NTSC) ?
-	    LINE_SZ_4CIFS_NTSC : LINE_SZ_4CIFS_PAL;
-}
-
-static int norm_maxh(struct video_device *vdev)
-{
-	return (vdev->current_norm & V4L2_STD_NTSC) ?
-	    (NUM_LINES_1CIFS_NTSC * 2) : (NUM_LINES_1CIFS_PAL * 2);
-}
-
-static int norm_minw(struct video_device *vdev)
-{
-	return (vdev->current_norm & V4L2_STD_NTSC) ?
-	    LINE_SZ_1CIFS_NTSC : LINE_SZ_1CIFS_PAL;
-}
-
-static int norm_minh(struct video_device *vdev)
-{
-	return (vdev->current_norm & V4L2_STD_NTSC) ?
-	    (NUM_LINES_1CIFS_NTSC) : (NUM_LINES_1CIFS_PAL);
-}
-
-
-/*
- * TODO: fixme: move YUV reordering to hardware
- * converts 2255 planar format to yuyv or uyvy
- */
-static void planar422p_to_yuv_packed(const unsigned char *in,
-				     unsigned char *out,
-				     int width, int height,
-				     int fmt)
-{
-	unsigned char *pY;
-	unsigned char *pCb;
-	unsigned char *pCr;
-	unsigned long size = height * width;
-	unsigned int i;
-	pY = (unsigned char *)in;
-	pCr = (unsigned char *)in + height * width;
-	pCb = (unsigned char *)in + height * width + (height * width / 2);
-	for (i = 0; i < size * 2; i += 4) {
-		out[i] = (fmt == V4L2_PIX_FMT_YUYV) ? *pY++ : *pCr++;
-		out[i + 1] = (fmt == V4L2_PIX_FMT_YUYV) ? *pCr++ : *pY++;
-		out[i + 2] = (fmt == V4L2_PIX_FMT_YUYV) ? *pY++ : *pCb++;
-		out[i + 3] = (fmt == V4L2_PIX_FMT_YUYV) ? *pCb++ : *pY++;
-	}
-	return;
-}
-
-static void s2255_reset_dsppower(struct s2255_dev *dev)
-{
-	s2255_vendor_req(dev, 0x40, 0x0000, 0x0001, NULL, 0, 1);
-	msleep(10);
-	s2255_vendor_req(dev, 0x50, 0x0000, 0x0000, NULL, 0, 1);
-	msleep(600);
-	s2255_vendor_req(dev, 0x10, 0x0000, 0x0000, NULL, 0, 1);
-	return;
-}
-
-/* kickstarts the firmware loading. from probe
- */
-static void s2255_timer(unsigned long user_data)
-{
-	struct s2255_fw *data = (struct s2255_fw *)user_data;
-	dprintk(100, "%s\n", __func__);
-	if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) {
-		printk(KERN_ERR "s2255: can't submit urb\n");
-		atomic_set(&data->fw_state, S2255_FW_FAILED);
-		/* wake up anything waiting for the firmware */
-		wake_up(&data->wait_fw);
-		return;
-	}
-}
-
-
-/* this loads the firmware asynchronously.
-   Originally this was done synchroously in probe.
-   But it is better to load it asynchronously here than block
-   inside the probe function. Blocking inside probe affects boot time.
-   FW loading is triggered by the timer in the probe function
-*/
-static void s2255_fwchunk_complete(struct urb *urb)
-{
-	struct s2255_fw *data = urb->context;
-	struct usb_device *udev = urb->dev;
-	int len;
-	dprintk(100, "%s: udev %p urb %p", __func__, udev, urb);
-	if (urb->status) {
-		dev_err(&udev->dev, "URB failed with status %d\n", urb->status);
-		atomic_set(&data->fw_state, S2255_FW_FAILED);
-		/* wake up anything waiting for the firmware */
-		wake_up(&data->wait_fw);
-		return;
-	}
-	if (data->fw_urb == NULL) {
-		s2255_dev_err(&udev->dev, "disconnected\n");
-		atomic_set(&data->fw_state, S2255_FW_FAILED);
-		/* wake up anything waiting for the firmware */
-		wake_up(&data->wait_fw);
-		return;
-	}
-#define CHUNK_SIZE 512
-	/* all USB transfers must be done with continuous kernel memory.
-	   can't allocate more than 128k in current linux kernel, so
-	   upload the firmware in chunks
-	 */
-	if (data->fw_loaded < data->fw_size) {
-		len = (data->fw_loaded + CHUNK_SIZE) > data->fw_size ?
-		    data->fw_size % CHUNK_SIZE : CHUNK_SIZE;
-
-		if (len < CHUNK_SIZE)
-			memset(data->pfw_data, 0, CHUNK_SIZE);
-
-		dprintk(100, "completed len %d, loaded %d \n", len,
-			data->fw_loaded);
-
-		memcpy(data->pfw_data,
-		       (char *) data->fw->data + data->fw_loaded, len);
-
-		usb_fill_bulk_urb(data->fw_urb, udev, usb_sndbulkpipe(udev, 2),
-				  data->pfw_data, CHUNK_SIZE,
-				  s2255_fwchunk_complete, data);
-		if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) {
-			dev_err(&udev->dev, "failed submit URB\n");
-			atomic_set(&data->fw_state, S2255_FW_FAILED);
-			/* wake up anything waiting for the firmware */
-			wake_up(&data->wait_fw);
-			return;
-		}
-		data->fw_loaded += len;
-	} else {
-		atomic_set(&data->fw_state, S2255_FW_LOADED_DSPWAIT);
-		dprintk(100, "%s: firmware upload complete\n", __func__);
-	}
-	return;
-
-}
-
-static int s2255_got_frame(struct s2255_channel *channel, int jpgsize)
-{
-	struct s2255_dmaqueue *dma_q = &channel->vidq;
-	struct s2255_buffer *buf;
-	struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
-	unsigned long flags = 0;
-	int rc = 0;
-	spin_lock_irqsave(&dev->slock, flags);
-	if (list_empty(&dma_q->active)) {
-		dprintk(1, "No active queue to serve\n");
-		rc = -1;
-		goto unlock;
-	}
-	buf = list_entry(dma_q->active.next,
-			 struct s2255_buffer, vb.queue);
-	list_del(&buf->vb.queue);
-	do_gettimeofday(&buf->vb.ts);
-	s2255_fillbuff(channel, buf, jpgsize);
-	wake_up(&buf->vb.done);
-	dprintk(2, "%s: [buf/i] [%p/%d]\n", __func__, buf, buf->vb.i);
-unlock:
-	spin_unlock_irqrestore(&dev->slock, flags);
-	return rc;
-}
-
-static const struct s2255_fmt *format_by_fourcc(int fourcc)
-{
-	unsigned int i;
-	for (i = 0; i < ARRAY_SIZE(formats); i++) {
-		if (-1 == formats[i].fourcc)
-			continue;
-	if (!jpeg_enable && ((formats[i].fourcc == V4L2_PIX_FMT_JPEG) ||
-			     (formats[i].fourcc == V4L2_PIX_FMT_MJPEG)))
-	    continue;
-		if (formats[i].fourcc == fourcc)
-			return formats + i;
-	}
-	return NULL;
-}
-
-/* video buffer vmalloc implementation based partly on VIVI driver which is
- *          Copyright (c) 2006 by
- *                  Mauro Carvalho Chehab <mchehab--a.t--infradead.org>
- *                  Ted Walther <ted--a.t--enumera.com>
- *                  John Sokol <sokol--a.t--videotechnology.com>
- *                  http://v4l.videotechnology.com/
- *
- */
-static void s2255_fillbuff(struct s2255_channel *channel,
-			   struct s2255_buffer *buf, int jpgsize)
-{
-	int pos = 0;
-	struct timeval ts;
-	const char *tmpbuf;
-	char *vbuf = videobuf_to_vmalloc(&buf->vb);
-	unsigned long last_frame;
-
-	if (!vbuf)
-		return;
-	last_frame = channel->last_frame;
-	if (last_frame != -1) {
-		tmpbuf =
-		    (const char *)channel->buffer.frame[last_frame].lpvbits;
-		switch (buf->fmt->fourcc) {
-		case V4L2_PIX_FMT_YUYV:
-		case V4L2_PIX_FMT_UYVY:
-			planar422p_to_yuv_packed((const unsigned char *)tmpbuf,
-						 vbuf, buf->vb.width,
-						 buf->vb.height,
-						 buf->fmt->fourcc);
-			break;
-		case V4L2_PIX_FMT_GREY:
-			memcpy(vbuf, tmpbuf, buf->vb.width * buf->vb.height);
-			break;
-		case V4L2_PIX_FMT_JPEG:
-		case V4L2_PIX_FMT_MJPEG:
-			buf->vb.size = jpgsize;
-			memcpy(vbuf, tmpbuf, buf->vb.size);
-			break;
-		case V4L2_PIX_FMT_YUV422P:
-			memcpy(vbuf, tmpbuf,
-			       buf->vb.width * buf->vb.height * 2);
-			break;
-		default:
-			printk(KERN_DEBUG "s2255: unknown format?\n");
-		}
-		channel->last_frame = -1;
-	} else {
-		printk(KERN_ERR "s2255: =======no frame\n");
-		return;
-
-	}
-	dprintk(2, "s2255fill at : Buffer 0x%08lx size= %d\n",
-		(unsigned long)vbuf, pos);
-	/* tell v4l buffer was filled */
-
-	buf->vb.field_count = channel->frame_count * 2;
-	do_gettimeofday(&ts);
-	buf->vb.ts = ts;
-	buf->vb.state = VIDEOBUF_DONE;
-}
-
-
-/* ------------------------------------------------------------------
-   Videobuf operations
-   ------------------------------------------------------------------*/
-
-static int buffer_setup(struct videobuf_queue *vq, unsigned int *count,
-			unsigned int *size)
-{
-	struct s2255_fh *fh = vq->priv_data;
-	struct s2255_channel *channel = fh->channel;
-	*size = channel->width * channel->height * (channel->fmt->depth >> 3);
-
-	if (0 == *count)
-		*count = S2255_DEF_BUFS;
-
-	if (*size * *count > vid_limit * 1024 * 1024)
-		*count = (vid_limit * 1024 * 1024) / *size;
-
-	return 0;
-}
-
-static void free_buffer(struct videobuf_queue *vq, struct s2255_buffer *buf)
-{
-	dprintk(4, "%s\n", __func__);
-
-	videobuf_vmalloc_free(&buf->vb);
-	buf->vb.state = VIDEOBUF_NEEDS_INIT;
-}
-
-static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
-			  enum v4l2_field field)
-{
-	struct s2255_fh *fh = vq->priv_data;
-	struct s2255_channel *channel = fh->channel;
-	struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
-	int rc;
-	int w = channel->width;
-	int h = channel->height;
-	dprintk(4, "%s, field=%d\n", __func__, field);
-	if (channel->fmt == NULL)
-		return -EINVAL;
-
-	if ((w < norm_minw(&channel->vdev)) ||
-	    (w > norm_maxw(&channel->vdev)) ||
-	    (h < norm_minh(&channel->vdev)) ||
-	    (h > norm_maxh(&channel->vdev))) {
-		dprintk(4, "invalid buffer prepare\n");
-		return -EINVAL;
-	}
-	buf->vb.size = w * h * (channel->fmt->depth >> 3);
-	if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) {
-		dprintk(4, "invalid buffer prepare\n");
-		return -EINVAL;
-	}
-
-	buf->fmt = channel->fmt;
-	buf->vb.width = w;
-	buf->vb.height = h;
-	buf->vb.field = field;
-
-	if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
-		rc = videobuf_iolock(vq, &buf->vb, NULL);
-		if (rc < 0)
-			goto fail;
-	}
-
-	buf->vb.state = VIDEOBUF_PREPARED;
-	return 0;
-fail:
-	free_buffer(vq, buf);
-	return rc;
-}
-
-static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
-{
-	struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
-	struct s2255_fh *fh = vq->priv_data;
-	struct s2255_channel *channel = fh->channel;
-	struct s2255_dmaqueue *vidq = &channel->vidq;
-	dprintk(1, "%s\n", __func__);
-	buf->vb.state = VIDEOBUF_QUEUED;
-	list_add_tail(&buf->vb.queue, &vidq->active);
-}
-
-static void buffer_release(struct videobuf_queue *vq,
-			   struct videobuf_buffer *vb)
-{
-	struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
-	struct s2255_fh *fh = vq->priv_data;
-	dprintk(4, "%s %d\n", __func__, fh->channel->idx);
-	free_buffer(vq, buf);
-}
-
-static struct videobuf_queue_ops s2255_video_qops = {
-	.buf_setup = buffer_setup,
-	.buf_prepare = buffer_prepare,
-	.buf_queue = buffer_queue,
-	.buf_release = buffer_release,
-};
-
-
-static int res_get(struct s2255_fh *fh)
-{
-	struct s2255_channel *channel = fh->channel;
-	/* is it free? */
-	if (channel->resources)
-		return 0; /* no, someone else uses it */
-	/* it's free, grab it */
-	channel->resources = 1;
-	fh->resources = 1;
-	dprintk(1, "s2255: res: get\n");
-	return 1;
-}
-
-static int res_locked(struct s2255_fh *fh)
-{
-	return fh->channel->resources;
-}
-
-static int res_check(struct s2255_fh *fh)
-{
-	return fh->resources;
-}
-
-
-static void res_free(struct s2255_fh *fh)
-{
-	struct s2255_channel *channel = fh->channel;
-	channel->resources = 0;
-	fh->resources = 0;
-	dprintk(1, "res: put\n");
-}
-
-static int vidioc_querymenu(struct file *file, void *priv,
-			    struct v4l2_querymenu *qmenu)
-{
-	static const char *colorfilter[] = {
-		"Off",
-		"On",
-		NULL
-	};
-	if (qmenu->id == V4L2_CID_PRIVATE_COLORFILTER) {
-		int i;
-		const char **menu_items = colorfilter;
-		for (i = 0; i < qmenu->index && menu_items[i]; i++)
-			; /* do nothing (from v4l2-common.c) */
-		if (menu_items[i] == NULL || menu_items[i][0] == '\0')
-			return -EINVAL;
-		strlcpy(qmenu->name, menu_items[qmenu->index],
-			sizeof(qmenu->name));
-		return 0;
-	}
-	return v4l2_ctrl_query_menu(qmenu, NULL, NULL);
-}
-
-static int vidioc_querycap(struct file *file, void *priv,
-			   struct v4l2_capability *cap)
-{
-	struct s2255_fh *fh = file->private_data;
-	struct s2255_dev *dev = fh->dev;
-	strlcpy(cap->driver, "s2255", sizeof(cap->driver));
-	strlcpy(cap->card, "s2255", sizeof(cap->card));
-	usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
-	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
-	return 0;
-}
-
-static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
-			       struct v4l2_fmtdesc *f)
-{
-	int index = f->index;
-
-	if (index >= ARRAY_SIZE(formats))
-		return -EINVAL;
-	if (!jpeg_enable && ((formats[index].fourcc == V4L2_PIX_FMT_JPEG) ||
-			(formats[index].fourcc == V4L2_PIX_FMT_MJPEG)))
-		return -EINVAL;
-	dprintk(4, "name %s\n", formats[index].name);
-	strlcpy(f->description, formats[index].name, sizeof(f->description));
-	f->pixelformat = formats[index].fourcc;
-	return 0;
-}
-
-static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
-			    struct v4l2_format *f)
-{
-	struct s2255_fh *fh = priv;
-	struct s2255_channel *channel = fh->channel;
-
-	f->fmt.pix.width = channel->width;
-	f->fmt.pix.height = channel->height;
-	f->fmt.pix.field = fh->vb_vidq.field;
-	f->fmt.pix.pixelformat = channel->fmt->fourcc;
-	f->fmt.pix.bytesperline = f->fmt.pix.width * (channel->fmt->depth >> 3);
-	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
-	return 0;
-}
-
-static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
-			      struct v4l2_format *f)
-{
-	const struct s2255_fmt *fmt;
-	enum v4l2_field field;
-	int  b_any_field = 0;
-	struct s2255_fh *fh = priv;
-	struct s2255_channel *channel = fh->channel;
-	int is_ntsc;
-	is_ntsc =
-		(channel->vdev.current_norm & V4L2_STD_NTSC) ? 1 : 0;
-
-	fmt = format_by_fourcc(f->fmt.pix.pixelformat);
-
-	if (fmt == NULL)
-		return -EINVAL;
-
-	field = f->fmt.pix.field;
-	if (field == V4L2_FIELD_ANY)
-		b_any_field = 1;
-
-	dprintk(50, "%s NTSC: %d suggested width: %d, height: %d\n",
-		__func__, is_ntsc, f->fmt.pix.width, f->fmt.pix.height);
-	if (is_ntsc) {
-		/* NTSC */
-		if (f->fmt.pix.height >= NUM_LINES_1CIFS_NTSC * 2) {
-			f->fmt.pix.height = NUM_LINES_1CIFS_NTSC * 2;
-			if (b_any_field) {
-				field = V4L2_FIELD_SEQ_TB;
-			} else if (!((field == V4L2_FIELD_INTERLACED) ||
-				      (field == V4L2_FIELD_SEQ_TB) ||
-				      (field == V4L2_FIELD_INTERLACED_TB))) {
-				dprintk(1, "unsupported field setting\n");
-				return -EINVAL;
-			}
-		} else {
-			f->fmt.pix.height = NUM_LINES_1CIFS_NTSC;
-			if (b_any_field) {
-				field = V4L2_FIELD_TOP;
-			} else if (!((field == V4L2_FIELD_TOP) ||
-				      (field == V4L2_FIELD_BOTTOM))) {
-				dprintk(1, "unsupported field setting\n");
-				return -EINVAL;
-			}
-
-		}
-		if (f->fmt.pix.width >= LINE_SZ_4CIFS_NTSC)
-			f->fmt.pix.width = LINE_SZ_4CIFS_NTSC;
-		else if (f->fmt.pix.width >= LINE_SZ_2CIFS_NTSC)
-			f->fmt.pix.width = LINE_SZ_2CIFS_NTSC;
-		else if (f->fmt.pix.width >= LINE_SZ_1CIFS_NTSC)
-			f->fmt.pix.width = LINE_SZ_1CIFS_NTSC;
-		else
-			f->fmt.pix.width = LINE_SZ_1CIFS_NTSC;
-	} else {
-		/* PAL */
-		if (f->fmt.pix.height >= NUM_LINES_1CIFS_PAL * 2) {
-			f->fmt.pix.height = NUM_LINES_1CIFS_PAL * 2;
-			if (b_any_field) {
-				field = V4L2_FIELD_SEQ_TB;
-			} else if (!((field == V4L2_FIELD_INTERLACED) ||
-				      (field == V4L2_FIELD_SEQ_TB) ||
-				      (field == V4L2_FIELD_INTERLACED_TB))) {
-				dprintk(1, "unsupported field setting\n");
-				return -EINVAL;
-			}
-		} else {
-			f->fmt.pix.height = NUM_LINES_1CIFS_PAL;
-			if (b_any_field) {
-				field = V4L2_FIELD_TOP;
-			} else if (!((field == V4L2_FIELD_TOP) ||
-				     (field == V4L2_FIELD_BOTTOM))) {
-				dprintk(1, "unsupported field setting\n");
-				return -EINVAL;
-			}
-		}
-		if (f->fmt.pix.width >= LINE_SZ_4CIFS_PAL) {
-			f->fmt.pix.width = LINE_SZ_4CIFS_PAL;
-			field = V4L2_FIELD_SEQ_TB;
-		} else if (f->fmt.pix.width >= LINE_SZ_2CIFS_PAL) {
-			f->fmt.pix.width = LINE_SZ_2CIFS_PAL;
-			field = V4L2_FIELD_TOP;
-		} else if (f->fmt.pix.width >= LINE_SZ_1CIFS_PAL) {
-			f->fmt.pix.width = LINE_SZ_1CIFS_PAL;
-			field = V4L2_FIELD_TOP;
-		} else {
-			f->fmt.pix.width = LINE_SZ_1CIFS_PAL;
-			field = V4L2_FIELD_TOP;
-		}
-	}
-	f->fmt.pix.field = field;
-	f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
-	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
-	dprintk(50, "%s: set width %d height %d field %d\n", __func__,
-		f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.field);
-	return 0;
-}
-
-static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
-			    struct v4l2_format *f)
-{
-	struct s2255_fh *fh = priv;
-	struct s2255_channel *channel = fh->channel;
-	const struct s2255_fmt *fmt;
-	struct videobuf_queue *q = &fh->vb_vidq;
-	struct s2255_mode mode;
-	int ret;
-
-	ret = vidioc_try_fmt_vid_cap(file, fh, f);
-
-	if (ret < 0)
-		return ret;
-
-	fmt = format_by_fourcc(f->fmt.pix.pixelformat);
-
-	if (fmt == NULL)
-		return -EINVAL;
-
-	mutex_lock(&q->vb_lock);
-
-	if (videobuf_queue_is_busy(&fh->vb_vidq)) {
-		dprintk(1, "queue busy\n");
-		ret = -EBUSY;
-		goto out_s_fmt;
-	}
-
-	if (res_locked(fh)) {
-		dprintk(1, "%s: channel busy\n", __func__);
-		ret = -EBUSY;
-		goto out_s_fmt;
-	}
-	mode = channel->mode;
-	channel->fmt = fmt;
-	channel->width = f->fmt.pix.width;
-	channel->height = f->fmt.pix.height;
-	fh->vb_vidq.field = f->fmt.pix.field;
-	fh->type = f->type;
-	if (channel->width > norm_minw(&channel->vdev)) {
-		if (channel->height > norm_minh(&channel->vdev)) {
-			if (channel->cap_parm.capturemode &
-			    V4L2_MODE_HIGHQUALITY)
-				mode.scale = SCALE_4CIFSI;
-			else
-				mode.scale = SCALE_4CIFS;
-		} else
-			mode.scale = SCALE_2CIFS;
-
-	} else {
-		mode.scale = SCALE_1CIFS;
-	}
-	/* color mode */
-	switch (channel->fmt->fourcc) {
-	case V4L2_PIX_FMT_GREY:
-		mode.color &= ~MASK_COLOR;
-		mode.color |= COLOR_Y8;
-		break;
-	case V4L2_PIX_FMT_JPEG:
-	case V4L2_PIX_FMT_MJPEG:
-		mode.color &= ~MASK_COLOR;
-		mode.color |= COLOR_JPG;
-		mode.color |= (channel->jc.quality << 8);
-		break;
-	case V4L2_PIX_FMT_YUV422P:
-		mode.color &= ~MASK_COLOR;
-		mode.color |= COLOR_YUVPL;
-		break;
-	case V4L2_PIX_FMT_YUYV:
-	case V4L2_PIX_FMT_UYVY:
-	default:
-		mode.color &= ~MASK_COLOR;
-		mode.color |= COLOR_YUVPK;
-		break;
-	}
-	if ((mode.color & MASK_COLOR) != (channel->mode.color & MASK_COLOR))
-		mode.restart = 1;
-	else if (mode.scale != channel->mode.scale)
-		mode.restart = 1;
-	else if (mode.format != channel->mode.format)
-		mode.restart = 1;
-	channel->mode = mode;
-	(void) s2255_set_mode(channel, &mode);
-	ret = 0;
-out_s_fmt:
-	mutex_unlock(&q->vb_lock);
-	return ret;
-}
-
-static int vidioc_reqbufs(struct file *file, void *priv,
-			  struct v4l2_requestbuffers *p)
-{
-	int rc;
-	struct s2255_fh *fh = priv;
-	rc = videobuf_reqbufs(&fh->vb_vidq, p);
-	return rc;
-}
-
-static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p)
-{
-	int rc;
-	struct s2255_fh *fh = priv;
-	rc = videobuf_querybuf(&fh->vb_vidq, p);
-	return rc;
-}
-
-static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
-{
-	int rc;
-	struct s2255_fh *fh = priv;
-	rc = videobuf_qbuf(&fh->vb_vidq, p);
-	return rc;
-}
-
-static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
-{
-	int rc;
-	struct s2255_fh *fh = priv;
-	rc = videobuf_dqbuf(&fh->vb_vidq, p, file->f_flags & O_NONBLOCK);
-	return rc;
-}
-
-/* write to the configuration pipe, synchronously */
-static int s2255_write_config(struct usb_device *udev, unsigned char *pbuf,
-			      int size)
-{
-	int pipe;
-	int done;
-	long retval = -1;
-	if (udev) {
-		pipe = usb_sndbulkpipe(udev, S2255_CONFIG_EP);
-		retval = usb_bulk_msg(udev, pipe, pbuf, size, &done, 500);
-	}
-	return retval;
-}
-
-static u32 get_transfer_size(struct s2255_mode *mode)
-{
-	int linesPerFrame = LINE_SZ_DEF;
-	int pixelsPerLine = NUM_LINES_DEF;
-	u32 outImageSize;
-	u32 usbInSize;
-	unsigned int mask_mult;
-
-	if (mode == NULL)
-		return 0;
-
-	if (mode->format == FORMAT_NTSC) {
-		switch (mode->scale) {
-		case SCALE_4CIFS:
-		case SCALE_4CIFSI:
-			linesPerFrame = NUM_LINES_4CIFS_NTSC * 2;
-			pixelsPerLine = LINE_SZ_4CIFS_NTSC;
-			break;
-		case SCALE_2CIFS:
-			linesPerFrame = NUM_LINES_2CIFS_NTSC;
-			pixelsPerLine = LINE_SZ_2CIFS_NTSC;
-			break;
-		case SCALE_1CIFS:
-			linesPerFrame = NUM_LINES_1CIFS_NTSC;
-			pixelsPerLine = LINE_SZ_1CIFS_NTSC;
-			break;
-		default:
-			break;
-		}
-	} else if (mode->format == FORMAT_PAL) {
-		switch (mode->scale) {
-		case SCALE_4CIFS:
-		case SCALE_4CIFSI:
-			linesPerFrame = NUM_LINES_4CIFS_PAL * 2;
-			pixelsPerLine = LINE_SZ_4CIFS_PAL;
-			break;
-		case SCALE_2CIFS:
-			linesPerFrame = NUM_LINES_2CIFS_PAL;
-			pixelsPerLine = LINE_SZ_2CIFS_PAL;
-			break;
-		case SCALE_1CIFS:
-			linesPerFrame = NUM_LINES_1CIFS_PAL;
-			pixelsPerLine = LINE_SZ_1CIFS_PAL;
-			break;
-		default:
-			break;
-		}
-	}
-	outImageSize = linesPerFrame * pixelsPerLine;
-	if ((mode->color & MASK_COLOR) != COLOR_Y8) {
-		/* 2 bytes/pixel if not monochrome */
-		outImageSize *= 2;
-	}
-
-	/* total bytes to send including prefix and 4K padding;
-	   must be a multiple of USB_READ_SIZE */
-	usbInSize = outImageSize + PREFIX_SIZE;	/* always send prefix */
-	mask_mult = 0xffffffffUL - DEF_USB_BLOCK + 1;
-	/* if size not a multiple of USB_READ_SIZE */
-	if (usbInSize & ~mask_mult)
-		usbInSize = (usbInSize & mask_mult) + (DEF_USB_BLOCK);
-	return usbInSize;
-}
-
-static void s2255_print_cfg(struct s2255_dev *sdev, struct s2255_mode *mode)
-{
-	struct device *dev = &sdev->udev->dev;
-	dev_info(dev, "------------------------------------------------\n");
-	dev_info(dev, "format: %d\nscale %d\n", mode->format, mode->scale);
-	dev_info(dev, "fdec: %d\ncolor %d\n", mode->fdec, mode->color);
-	dev_info(dev, "bright: 0x%x\n", mode->bright);
-	dev_info(dev, "------------------------------------------------\n");
-}
-
-/*
- * set mode is the function which controls the DSP.
- * the restart parameter in struct s2255_mode should be set whenever
- * the image size could change via color format, video system or image
- * size.
- * When the restart parameter is set, we sleep for ONE frame to allow the
- * DSP time to get the new frame
- */
-static int s2255_set_mode(struct s2255_channel *channel,
-			  struct s2255_mode *mode)
-{
-	int res;
-	__le32 *buffer;
-	unsigned long chn_rev;
-	struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
-	chn_rev = G_chnmap[channel->idx];
-	dprintk(3, "%s channel: %d\n", __func__, channel->idx);
-	/* if JPEG, set the quality */
-	if ((mode->color & MASK_COLOR) == COLOR_JPG) {
-		mode->color &= ~MASK_COLOR;
-		mode->color |= COLOR_JPG;
-		mode->color &= ~MASK_JPG_QUALITY;
-		mode->color |= (channel->jc.quality << 8);
-	}
-	/* save the mode */
-	channel->mode = *mode;
-	channel->req_image_size = get_transfer_size(mode);
-	dprintk(1, "%s: reqsize %ld\n", __func__, channel->req_image_size);
-	buffer = kzalloc(512, GFP_KERNEL);
-	if (buffer == NULL) {
-		dev_err(&dev->udev->dev, "out of mem\n");
-		return -ENOMEM;
-	}
-	/* set the mode */
-	buffer[0] = IN_DATA_TOKEN;
-	buffer[1] = (__le32) cpu_to_le32(chn_rev);
-	buffer[2] = CMD_SET_MODE;
-	memcpy(&buffer[3], &channel->mode, sizeof(struct s2255_mode));
-	channel->setmode_ready = 0;
-	res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
-	if (debug)
-		s2255_print_cfg(dev, mode);
-	kfree(buffer);
-	/* wait at least 3 frames before continuing */
-	if (mode->restart) {
-		wait_event_timeout(channel->wait_setmode,
-				   (channel->setmode_ready != 0),
-				   msecs_to_jiffies(S2255_SETMODE_TIMEOUT));
-		if (channel->setmode_ready != 1) {
-			printk(KERN_DEBUG "s2255: no set mode response\n");
-			res = -EFAULT;
-		}
-	}
-	/* clear the restart flag */
-	channel->mode.restart = 0;
-	dprintk(1, "%s chn %d, result: %d\n", __func__, channel->idx, res);
-	return res;
-}
-
-static int s2255_cmd_status(struct s2255_channel *channel, u32 *pstatus)
-{
-	int res;
-	__le32 *buffer;
-	u32 chn_rev;
-	struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
-	chn_rev = G_chnmap[channel->idx];
-	dprintk(4, "%s chan %d\n", __func__, channel->idx);
-	buffer = kzalloc(512, GFP_KERNEL);
-	if (buffer == NULL) {
-		dev_err(&dev->udev->dev, "out of mem\n");
-		return -ENOMEM;
-	}
-	/* form the get vid status command */
-	buffer[0] = IN_DATA_TOKEN;
-	buffer[1] = (__le32) cpu_to_le32(chn_rev);
-	buffer[2] = CMD_STATUS;
-	*pstatus = 0;
-	channel->vidstatus_ready = 0;
-	res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
-	kfree(buffer);
-	wait_event_timeout(channel->wait_vidstatus,
-			   (channel->vidstatus_ready != 0),
-			   msecs_to_jiffies(S2255_VIDSTATUS_TIMEOUT));
-	if (channel->vidstatus_ready != 1) {
-		printk(KERN_DEBUG "s2255: no vidstatus response\n");
-		res = -EFAULT;
-	}
-	*pstatus = channel->vidstatus;
-	dprintk(4, "%s, vid status %d\n", __func__, *pstatus);
-	return res;
-}
-
-static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
-{
-	int res;
-	struct s2255_fh *fh = priv;
-	struct s2255_dev *dev = fh->dev;
-	struct s2255_channel *channel = fh->channel;
-	int j;
-	dprintk(4, "%s\n", __func__);
-	if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
-		dev_err(&dev->udev->dev, "invalid fh type0\n");
-		return -EINVAL;
-	}
-	if (i != fh->type) {
-		dev_err(&dev->udev->dev, "invalid fh type1\n");
-		return -EINVAL;
-	}
-
-	if (!res_get(fh)) {
-		s2255_dev_err(&dev->udev->dev, "stream busy\n");
-		return -EBUSY;
-	}
-	channel->last_frame = -1;
-	channel->bad_payload = 0;
-	channel->cur_frame = 0;
-	channel->frame_count = 0;
-	for (j = 0; j < SYS_FRAMES; j++) {
-		channel->buffer.frame[j].ulState = S2255_READ_IDLE;
-		channel->buffer.frame[j].cur_size = 0;
-	}
-	res = videobuf_streamon(&fh->vb_vidq);
-	if (res == 0) {
-		s2255_start_acquire(channel);
-		channel->b_acquire = 1;
-	} else
-		res_free(fh);
-
-	return res;
-}
-
-static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
-{
-	struct s2255_fh *fh = priv;
-	dprintk(4, "%s\n, channel: %d", __func__, fh->channel->idx);
-	if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
-		printk(KERN_ERR "invalid fh type0\n");
-		return -EINVAL;
-	}
-	if (i != fh->type) {
-		printk(KERN_ERR "invalid type i\n");
-		return -EINVAL;
-	}
-	s2255_stop_acquire(fh->channel);
-	videobuf_streamoff(&fh->vb_vidq);
-	res_free(fh);
-	return 0;
-}
-
-static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i)
-{
-	struct s2255_fh *fh = priv;
-	struct s2255_mode mode;
-	struct videobuf_queue *q = &fh->vb_vidq;
-	int ret = 0;
-	mutex_lock(&q->vb_lock);
-	if (videobuf_queue_is_busy(q)) {
-		dprintk(1, "queue busy\n");
-		ret = -EBUSY;
-		goto out_s_std;
-	}
-	if (res_locked(fh)) {
-		dprintk(1, "can't change standard after started\n");
-		ret = -EBUSY;
-		goto out_s_std;
-	}
-	mode = fh->channel->mode;
-	if (*i & V4L2_STD_NTSC) {
-		dprintk(4, "%s NTSC\n", __func__);
-		/* if changing format, reset frame decimation/intervals */
-		if (mode.format != FORMAT_NTSC) {
-			mode.restart = 1;
-			mode.format = FORMAT_NTSC;
-			mode.fdec = FDEC_1;
-		}
-	} else if (*i & V4L2_STD_PAL) {
-		dprintk(4, "%s PAL\n", __func__);
-		if (mode.format != FORMAT_PAL) {
-			mode.restart = 1;
-			mode.format = FORMAT_PAL;
-			mode.fdec = FDEC_1;
-		}
-	} else {
-		ret = -EINVAL;
-	}
-	if (mode.restart)
-		s2255_set_mode(fh->channel, &mode);
-out_s_std:
-	mutex_unlock(&q->vb_lock);
-	return ret;
-}
-
-/* Sensoray 2255 is a multiple channel capture device.
-   It does not have a "crossbar" of inputs.
-   We use one V4L device per channel. The user must
-   be aware that certain combinations are not allowed.
-   For instance, you cannot do full FPS on more than 2 channels(2 videodevs)
-   at once in color(you can do full fps on 4 channels with greyscale.
-*/
-static int vidioc_enum_input(struct file *file, void *priv,
-			     struct v4l2_input *inp)
-{
-	struct s2255_fh *fh = priv;
-	struct s2255_dev *dev = fh->dev;
-	struct s2255_channel *channel = fh->channel;
-	u32 status = 0;
-	if (inp->index != 0)
-		return -EINVAL;
-	inp->type = V4L2_INPUT_TYPE_CAMERA;
-	inp->std = S2255_NORMS;
-	inp->status = 0;
-	if (dev->dsp_fw_ver >= S2255_MIN_DSP_STATUS) {
-		int rc;
-		rc = s2255_cmd_status(fh->channel, &status);
-		dprintk(4, "s2255_cmd_status rc: %d status %x\n", rc, status);
-		if (rc == 0)
-			inp->status =  (status & 0x01) ? 0
-				: V4L2_IN_ST_NO_SIGNAL;
-	}
-	switch (dev->pid) {
-	case 0x2255:
-	default:
-		strlcpy(inp->name, "Composite", sizeof(inp->name));
-		break;
-	case 0x2257:
-		strlcpy(inp->name, (channel->idx < 2) ? "Composite" : "S-Video",
-			sizeof(inp->name));
-		break;
-	}
-	return 0;
-}
-
-static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
-{
-	*i = 0;
-	return 0;
-}
-static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
-{
-	if (i > 0)
-		return -EINVAL;
-	return 0;
-}
-
-/* --- controls ---------------------------------------------- */
-static int vidioc_queryctrl(struct file *file, void *priv,
-			    struct v4l2_queryctrl *qc)
-{
-	struct s2255_fh *fh = priv;
-	struct s2255_channel *channel = fh->channel;
-	struct s2255_dev *dev = fh->dev;
-	switch (qc->id) {
-	case V4L2_CID_BRIGHTNESS:
-		v4l2_ctrl_query_fill(qc, -127, 127, 1, DEF_BRIGHT);
-		break;
-	case V4L2_CID_CONTRAST:
-		v4l2_ctrl_query_fill(qc, 0, 255, 1, DEF_CONTRAST);
-		break;
-	case V4L2_CID_SATURATION:
-		v4l2_ctrl_query_fill(qc, 0, 255, 1, DEF_SATURATION);
-		break;
-	case V4L2_CID_HUE:
-		v4l2_ctrl_query_fill(qc, 0, 255, 1, DEF_HUE);
-		break;
-	case V4L2_CID_PRIVATE_COLORFILTER:
-		if (dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
-			return -EINVAL;
-		if ((dev->pid == 0x2257) && (channel->idx > 1))
-			return -EINVAL;
-		strlcpy(qc->name, "Color Filter", sizeof(qc->name));
-		qc->type = V4L2_CTRL_TYPE_MENU;
-		qc->minimum = 0;
-		qc->maximum = 1;
-		qc->step = 1;
-		qc->default_value = 1;
-		qc->flags = 0;
-		break;
-	default:
-		return -EINVAL;
-	}
-	dprintk(4, "%s, id %d\n", __func__, qc->id);
-	return 0;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
-			 struct v4l2_control *ctrl)
-{
-	struct s2255_fh *fh = priv;
-	struct s2255_dev *dev = fh->dev;
-	struct s2255_channel *channel = fh->channel;
-	switch (ctrl->id) {
-	case V4L2_CID_BRIGHTNESS:
-		ctrl->value = channel->mode.bright;
-		break;
-	case V4L2_CID_CONTRAST:
-		ctrl->value = channel->mode.contrast;
-		break;
-	case V4L2_CID_SATURATION:
-		ctrl->value = channel->mode.saturation;
-		break;
-	case V4L2_CID_HUE:
-		ctrl->value = channel->mode.hue;
-		break;
-	case V4L2_CID_PRIVATE_COLORFILTER:
-		if (dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
-			return -EINVAL;
-		if ((dev->pid == 0x2257) && (channel->idx > 1))
-			return -EINVAL;
-		ctrl->value = !((channel->mode.color & MASK_INPUT_TYPE) >> 16);
-		break;
-	default:
-		return -EINVAL;
-	}
-	dprintk(4, "%s, id %d val %d\n", __func__, ctrl->id, ctrl->value);
-	return 0;
-}
-
-static int vidioc_s_ctrl(struct file *file, void *priv,
-			 struct v4l2_control *ctrl)
-{
-	struct s2255_fh *fh = priv;
-	struct s2255_channel *channel = fh->channel;
-	struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
-	struct s2255_mode mode;
-	mode = channel->mode;
-	dprintk(4, "%s\n", __func__);
-	/* update the mode to the corresponding value */
-	switch (ctrl->id) {
-	case V4L2_CID_BRIGHTNESS:
-		mode.bright = ctrl->value;
-		break;
-	case V4L2_CID_CONTRAST:
-		mode.contrast = ctrl->value;
-		break;
-	case V4L2_CID_HUE:
-		mode.hue = ctrl->value;
-		break;
-	case V4L2_CID_SATURATION:
-		mode.saturation = ctrl->value;
-		break;
-	case V4L2_CID_PRIVATE_COLORFILTER:
-		if (dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
-			return -EINVAL;
-		if ((dev->pid == 0x2257) && (channel->idx > 1))
-			return -EINVAL;
-		mode.color &= ~MASK_INPUT_TYPE;
-		mode.color |= ((ctrl->value ? 0 : 1) << 16);
-		break;
-	default:
-		return -EINVAL;
-	}
-	mode.restart = 0;
-	/* set mode here.  Note: stream does not need restarted.
-	   some V4L programs restart stream unnecessarily
-	   after a s_crtl.
-	*/
-	s2255_set_mode(fh->channel, &mode);
-	return 0;
-}
-
-static int vidioc_g_jpegcomp(struct file *file, void *priv,
-			 struct v4l2_jpegcompression *jc)
-{
-	struct s2255_fh *fh = priv;
-	struct s2255_channel *channel = fh->channel;
-	*jc = channel->jc;
-	dprintk(2, "%s: quality %d\n", __func__, jc->quality);
-	return 0;
-}
-
-static int vidioc_s_jpegcomp(struct file *file, void *priv,
-			 struct v4l2_jpegcompression *jc)
-{
-	struct s2255_fh *fh = priv;
-	struct s2255_channel *channel = fh->channel;
-	if (jc->quality < 0 || jc->quality > 100)
-		return -EINVAL;
-	channel->jc.quality = jc->quality;
-	dprintk(2, "%s: quality %d\n", __func__, jc->quality);
-	return 0;
-}
-
-static int vidioc_g_parm(struct file *file, void *priv,
-			 struct v4l2_streamparm *sp)
-{
-	struct s2255_fh *fh = priv;
-	__u32 def_num, def_dem;
-	struct s2255_channel *channel = fh->channel;
-	if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
-		return -EINVAL;
-	memset(sp, 0, sizeof(struct v4l2_streamparm));
-	sp->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
-	sp->parm.capture.capturemode = channel->cap_parm.capturemode;
-	def_num = (channel->mode.format == FORMAT_NTSC) ? 1001 : 1000;
-	def_dem = (channel->mode.format == FORMAT_NTSC) ? 30000 : 25000;
-	sp->parm.capture.timeperframe.denominator = def_dem;
-	switch (channel->mode.fdec) {
-	default:
-	case FDEC_1:
-		sp->parm.capture.timeperframe.numerator = def_num;
-		break;
-	case FDEC_2:
-		sp->parm.capture.timeperframe.numerator = def_num * 2;
-		break;
-	case FDEC_3:
-		sp->parm.capture.timeperframe.numerator = def_num * 3;
-		break;
-	case FDEC_5:
-		sp->parm.capture.timeperframe.numerator = def_num * 5;
-		break;
-	}
-	dprintk(4, "%s capture mode, %d timeperframe %d/%d\n", __func__,
-		sp->parm.capture.capturemode,
-		sp->parm.capture.timeperframe.numerator,
-		sp->parm.capture.timeperframe.denominator);
-	return 0;
-}
-
-static int vidioc_s_parm(struct file *file, void *priv,
-			 struct v4l2_streamparm *sp)
-{
-	struct s2255_fh *fh = priv;
-	struct s2255_channel *channel = fh->channel;
-	struct s2255_mode mode;
-	int fdec = FDEC_1;
-	__u32 def_num, def_dem;
-	if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
-		return -EINVAL;
-	mode = channel->mode;
-	/* high quality capture mode requires a stream restart */
-	if (channel->cap_parm.capturemode
-	    != sp->parm.capture.capturemode && res_locked(fh))
-		return -EBUSY;
-	def_num = (mode.format == FORMAT_NTSC) ? 1001 : 1000;
-	def_dem = (mode.format == FORMAT_NTSC) ? 30000 : 25000;
-	if (def_dem != sp->parm.capture.timeperframe.denominator)
-		sp->parm.capture.timeperframe.numerator = def_num;
-	else if (sp->parm.capture.timeperframe.numerator <= def_num)
-		sp->parm.capture.timeperframe.numerator = def_num;
-	else if (sp->parm.capture.timeperframe.numerator <= (def_num * 2)) {
-		sp->parm.capture.timeperframe.numerator = def_num * 2;
-		fdec = FDEC_2;
-	} else if (sp->parm.capture.timeperframe.numerator <= (def_num * 3)) {
-		sp->parm.capture.timeperframe.numerator = def_num * 3;
-		fdec = FDEC_3;
-	} else {
-		sp->parm.capture.timeperframe.numerator = def_num * 5;
-		fdec = FDEC_5;
-	}
-	mode.fdec = fdec;
-	sp->parm.capture.timeperframe.denominator = def_dem;
-	s2255_set_mode(channel, &mode);
-	dprintk(4, "%s capture mode, %d timeperframe %d/%d, fdec %d\n",
-		__func__,
-		sp->parm.capture.capturemode,
-		sp->parm.capture.timeperframe.numerator,
-		sp->parm.capture.timeperframe.denominator, fdec);
-	return 0;
-}
-
-static int vidioc_enum_frameintervals(struct file *file, void *priv,
-			    struct v4l2_frmivalenum *fe)
-{
-	int is_ntsc = 0;
-#define NUM_FRAME_ENUMS 4
-	int frm_dec[NUM_FRAME_ENUMS] = {1, 2, 3, 5};
-	if (fe->index < 0 || fe->index >= NUM_FRAME_ENUMS)
-		return -EINVAL;
-	switch (fe->width) {
-	case 640:
-		if (fe->height != 240 && fe->height != 480)
-			return -EINVAL;
-		is_ntsc = 1;
-		break;
-	case 320:
-		if (fe->height != 240)
-			return -EINVAL;
-		is_ntsc = 1;
-		break;
-	case 704:
-		if (fe->height != 288 && fe->height != 576)
-			return -EINVAL;
-		break;
-	case 352:
-		if (fe->height != 288)
-			return -EINVAL;
-		break;
-	default:
-		return -EINVAL;
-	}
-	fe->type = V4L2_FRMIVAL_TYPE_DISCRETE;
-	fe->discrete.denominator = is_ntsc ? 30000 : 25000;
-	fe->discrete.numerator = (is_ntsc ? 1001 : 1000) * frm_dec[fe->index];
-	dprintk(4, "%s discrete %d/%d\n", __func__, fe->discrete.numerator,
-		fe->discrete.denominator);
-	return 0;
-}
-
-static int __s2255_open(struct file *file)
-{
-	struct video_device *vdev = video_devdata(file);
-	struct s2255_channel *channel = video_drvdata(file);
-	struct s2255_dev *dev = to_s2255_dev(vdev->v4l2_dev);
-	struct s2255_fh *fh;
-	enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	int state;
-	dprintk(1, "s2255: open called (dev=%s)\n",
-		video_device_node_name(vdev));
-	state = atomic_read(&dev->fw_data->fw_state);
-	switch (state) {
-	case S2255_FW_DISCONNECTING:
-		return -ENODEV;
-	case S2255_FW_FAILED:
-		s2255_dev_err(&dev->udev->dev,
-			"firmware load failed. retrying.\n");
-		s2255_fwload_start(dev, 1);
-		wait_event_timeout(dev->fw_data->wait_fw,
-				   ((atomic_read(&dev->fw_data->fw_state)
-				     == S2255_FW_SUCCESS) ||
-				    (atomic_read(&dev->fw_data->fw_state)
-				     == S2255_FW_DISCONNECTING)),
-				   msecs_to_jiffies(S2255_LOAD_TIMEOUT));
-		/* state may have changed, re-read */
-		state = atomic_read(&dev->fw_data->fw_state);
-		break;
-	case S2255_FW_NOTLOADED:
-	case S2255_FW_LOADED_DSPWAIT:
-		/* give S2255_LOAD_TIMEOUT time for firmware to load in case
-		   driver loaded and then device immediately opened */
-		printk(KERN_INFO "%s waiting for firmware load\n", __func__);
-		wait_event_timeout(dev->fw_data->wait_fw,
-				   ((atomic_read(&dev->fw_data->fw_state)
-				     == S2255_FW_SUCCESS) ||
-				    (atomic_read(&dev->fw_data->fw_state)
-				     == S2255_FW_DISCONNECTING)),
-				   msecs_to_jiffies(S2255_LOAD_TIMEOUT));
-		/* state may have changed, re-read */
-		state = atomic_read(&dev->fw_data->fw_state);
-		break;
-	case S2255_FW_SUCCESS:
-	default:
-		break;
-	}
-	/* state may have changed in above switch statement */
-	switch (state) {
-	case S2255_FW_SUCCESS:
-		break;
-	case S2255_FW_FAILED:
-		printk(KERN_INFO "2255 firmware load failed.\n");
-		return -ENODEV;
-	case S2255_FW_DISCONNECTING:
-		printk(KERN_INFO "%s: disconnecting\n", __func__);
-		return -ENODEV;
-	case S2255_FW_LOADED_DSPWAIT:
-	case S2255_FW_NOTLOADED:
-		printk(KERN_INFO "%s: firmware not loaded yet"
-		       "please try again later\n",
-		       __func__);
-		/*
-		 * Timeout on firmware load means device unusable.
-		 * Set firmware failure state.
-		 * On next s2255_open the firmware will be reloaded.
-		 */
-		atomic_set(&dev->fw_data->fw_state,
-			   S2255_FW_FAILED);
-		return -EAGAIN;
-	default:
-		printk(KERN_INFO "%s: unknown state\n", __func__);
-		return -EFAULT;
-	}
-	/* allocate + initialize per filehandle data */
-	fh = kzalloc(sizeof(*fh), GFP_KERNEL);
-	if (NULL == fh)
-		return -ENOMEM;
-	file->private_data = fh;
-	fh->dev = dev;
-	fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	fh->channel = channel;
-	if (!channel->configured) {
-		/* configure channel to default state */
-		channel->fmt = &formats[0];
-		s2255_set_mode(channel, &channel->mode);
-		channel->configured = 1;
-	}
-	dprintk(1, "%s: dev=%s type=%s\n", __func__,
-		video_device_node_name(vdev), v4l2_type_names[type]);
-	dprintk(2, "%s: fh=0x%08lx, dev=0x%08lx, vidq=0x%08lx\n", __func__,
-		(unsigned long)fh, (unsigned long)dev,
-		(unsigned long)&channel->vidq);
-	dprintk(4, "%s: list_empty active=%d\n", __func__,
-		list_empty(&channel->vidq.active));
-	videobuf_queue_vmalloc_init(&fh->vb_vidq, &s2255_video_qops,
-				    NULL, &dev->slock,
-				    fh->type,
-				    V4L2_FIELD_INTERLACED,
-				    sizeof(struct s2255_buffer),
-				    fh, vdev->lock);
-	return 0;
-}
-
-static int s2255_open(struct file *file)
-{
-	struct video_device *vdev = video_devdata(file);
-	int ret;
-
-	if (mutex_lock_interruptible(vdev->lock))
-		return -ERESTARTSYS;
-	ret = __s2255_open(file);
-	mutex_unlock(vdev->lock);
-	return ret;
-}
-
-static unsigned int s2255_poll(struct file *file,
-			       struct poll_table_struct *wait)
-{
-	struct s2255_fh *fh = file->private_data;
-	struct s2255_dev *dev = fh->dev;
-	int rc;
-	dprintk(100, "%s\n", __func__);
-	if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
-		return POLLERR;
-	mutex_lock(&dev->lock);
-	rc = videobuf_poll_stream(file, &fh->vb_vidq, wait);
-	mutex_unlock(&dev->lock);
-	return rc;
-}
-
-static void s2255_destroy(struct s2255_dev *dev)
-{
-	/* board shutdown stops the read pipe if it is running */
-	s2255_board_shutdown(dev);
-	/* make sure firmware still not trying to load */
-	del_timer(&dev->timer);  /* only started in .probe and .open */
-	if (dev->fw_data->fw_urb) {
-		usb_kill_urb(dev->fw_data->fw_urb);
-		usb_free_urb(dev->fw_data->fw_urb);
-		dev->fw_data->fw_urb = NULL;
-	}
-	release_firmware(dev->fw_data->fw);
-	kfree(dev->fw_data->pfw_data);
-	kfree(dev->fw_data);
-	/* reset the DSP so firmware can be reloaded next time */
-	s2255_reset_dsppower(dev);
-	mutex_destroy(&dev->lock);
-	usb_put_dev(dev->udev);
-	v4l2_device_unregister(&dev->v4l2_dev);
-	dprintk(1, "%s", __func__);
-	kfree(dev);
-}
-
-static int s2255_release(struct file *file)
-{
-	struct s2255_fh *fh = file->private_data;
-	struct s2255_dev *dev = fh->dev;
-	struct video_device *vdev = video_devdata(file);
-	struct s2255_channel *channel = fh->channel;
-	if (!dev)
-		return -ENODEV;
-	mutex_lock(&dev->lock);
-	/* turn off stream */
-	if (res_check(fh)) {
-		if (channel->b_acquire)
-			s2255_stop_acquire(fh->channel);
-		videobuf_streamoff(&fh->vb_vidq);
-		res_free(fh);
-	}
-	videobuf_mmap_free(&fh->vb_vidq);
-	mutex_unlock(&dev->lock);
-	dprintk(1, "%s (dev=%s)\n", __func__, video_device_node_name(vdev));
-	kfree(fh);
-	return 0;
-}
-
-static int s2255_mmap_v4l(struct file *file, struct vm_area_struct *vma)
-{
-	struct s2255_fh *fh = file->private_data;
-	struct s2255_dev *dev = fh->dev;
-	int ret;
-
-	if (!fh)
-		return -ENODEV;
-	dprintk(4, "%s, vma=0x%08lx\n", __func__, (unsigned long)vma);
-	if (mutex_lock_interruptible(&dev->lock))
-		return -ERESTARTSYS;
-	ret = videobuf_mmap_mapper(&fh->vb_vidq, vma);
-	mutex_unlock(&dev->lock);
-	dprintk(4, "%s vma start=0x%08lx, size=%ld, ret=%d\n", __func__,
-		(unsigned long)vma->vm_start,
-		(unsigned long)vma->vm_end - (unsigned long)vma->vm_start, ret);
-	return ret;
-}
-
-static const struct v4l2_file_operations s2255_fops_v4l = {
-	.owner = THIS_MODULE,
-	.open = s2255_open,
-	.release = s2255_release,
-	.poll = s2255_poll,
-	.unlocked_ioctl = video_ioctl2,	/* V4L2 ioctl handler */
-	.mmap = s2255_mmap_v4l,
-};
-
-static const struct v4l2_ioctl_ops s2255_ioctl_ops = {
-	.vidioc_querymenu = vidioc_querymenu,
-	.vidioc_querycap = vidioc_querycap,
-	.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
-	.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
-	.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
-	.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
-	.vidioc_reqbufs = vidioc_reqbufs,
-	.vidioc_querybuf = vidioc_querybuf,
-	.vidioc_qbuf = vidioc_qbuf,
-	.vidioc_dqbuf = vidioc_dqbuf,
-	.vidioc_s_std = vidioc_s_std,
-	.vidioc_enum_input = vidioc_enum_input,
-	.vidioc_g_input = vidioc_g_input,
-	.vidioc_s_input = vidioc_s_input,
-	.vidioc_queryctrl = vidioc_queryctrl,
-	.vidioc_g_ctrl = vidioc_g_ctrl,
-	.vidioc_s_ctrl = vidioc_s_ctrl,
-	.vidioc_streamon = vidioc_streamon,
-	.vidioc_streamoff = vidioc_streamoff,
-	.vidioc_s_jpegcomp = vidioc_s_jpegcomp,
-	.vidioc_g_jpegcomp = vidioc_g_jpegcomp,
-	.vidioc_s_parm = vidioc_s_parm,
-	.vidioc_g_parm = vidioc_g_parm,
-	.vidioc_enum_frameintervals = vidioc_enum_frameintervals,
-};
-
-static void s2255_video_device_release(struct video_device *vdev)
-{
-	struct s2255_dev *dev = to_s2255_dev(vdev->v4l2_dev);
-	dprintk(4, "%s, chnls: %d \n", __func__,
-		atomic_read(&dev->num_channels));
-	if (atomic_dec_and_test(&dev->num_channels))
-		s2255_destroy(dev);
-	return;
-}
-
-static struct video_device template = {
-	.name = "s2255v",
-	.fops = &s2255_fops_v4l,
-	.ioctl_ops = &s2255_ioctl_ops,
-	.release = s2255_video_device_release,
-	.tvnorms = S2255_NORMS,
-	.current_norm = V4L2_STD_NTSC_M,
-};
-
-static int s2255_probe_v4l(struct s2255_dev *dev)
-{
-	int ret;
-	int i;
-	int cur_nr = video_nr;
-	struct s2255_channel *channel;
-	ret = v4l2_device_register(&dev->interface->dev, &dev->v4l2_dev);
-	if (ret)
-		return ret;
-	/* initialize all video 4 linux */
-	/* register 4 video devices */
-	for (i = 0; i < MAX_CHANNELS; i++) {
-		channel = &dev->channel[i];
-		INIT_LIST_HEAD(&channel->vidq.active);
-		channel->vidq.dev = dev;
-		/* register 4 video devices */
-		channel->vdev = template;
-		channel->vdev.lock = &dev->lock;
-		channel->vdev.v4l2_dev = &dev->v4l2_dev;
-		video_set_drvdata(&channel->vdev, channel);
-		if (video_nr == -1)
-			ret = video_register_device(&channel->vdev,
-						    VFL_TYPE_GRABBER,
-						    video_nr);
-		else
-			ret = video_register_device(&channel->vdev,
-						    VFL_TYPE_GRABBER,
-						    cur_nr + i);
-
-		if (ret) {
-			dev_err(&dev->udev->dev,
-				"failed to register video device!\n");
-			break;
-		}
-		atomic_inc(&dev->num_channels);
-		v4l2_info(&dev->v4l2_dev, "V4L2 device registered as %s\n",
-			  video_device_node_name(&channel->vdev));
-
-	}
-	printk(KERN_INFO "Sensoray 2255 V4L driver Revision: %s\n",
-	       S2255_VERSION);
-	/* if no channels registered, return error and probe will fail*/
-	if (atomic_read(&dev->num_channels) == 0) {
-		v4l2_device_unregister(&dev->v4l2_dev);
-		return ret;
-	}
-	if (atomic_read(&dev->num_channels) != MAX_CHANNELS)
-		printk(KERN_WARNING "s2255: Not all channels available.\n");
-	return 0;
-}
-
-/* this function moves the usb stream read pipe data
- * into the system buffers.
- * returns 0 on success, EAGAIN if more data to process( call this
- * function again).
- *
- * Received frame structure:
- * bytes 0-3:  marker : 0x2255DA4AL (S2255_MARKER_FRAME)
- * bytes 4-7:  channel: 0-3
- * bytes 8-11: payload size:  size of the frame
- * bytes 12-payloadsize+12:  frame data
- */
-static int save_frame(struct s2255_dev *dev, struct s2255_pipeinfo *pipe_info)
-{
-	char *pdest;
-	u32 offset = 0;
-	int bframe = 0;
-	char *psrc;
-	unsigned long copy_size;
-	unsigned long size;
-	s32 idx = -1;
-	struct s2255_framei *frm;
-	unsigned char *pdata;
-	struct s2255_channel *channel;
-	dprintk(100, "buffer to user\n");
-	channel = &dev->channel[dev->cc];
-	idx = channel->cur_frame;
-	frm = &channel->buffer.frame[idx];
-	if (frm->ulState == S2255_READ_IDLE) {
-		int jj;
-		unsigned int cc;
-		__le32 *pdword; /*data from dsp is little endian */
-		int payload;
-		/* search for marker codes */
-		pdata = (unsigned char *)pipe_info->transfer_buffer;
-		pdword = (__le32 *)pdata;
-		for (jj = 0; jj < (pipe_info->cur_transfer_size - 12); jj++) {
-			switch (*pdword) {
-			case S2255_MARKER_FRAME:
-				dprintk(4, "found frame marker at offset:"
-					" %d [%x %x]\n", jj, pdata[0],
-					pdata[1]);
-				offset = jj + PREFIX_SIZE;
-				bframe = 1;
-				cc = le32_to_cpu(pdword[1]);
-				if (cc >= MAX_CHANNELS) {
-					printk(KERN_ERR
-					       "bad channel\n");
-					return -EINVAL;
-				}
-				/* reverse it */
-				dev->cc = G_chnmap[cc];
-				channel = &dev->channel[dev->cc];
-				payload =  le32_to_cpu(pdword[3]);
-				if (payload > channel->req_image_size) {
-					channel->bad_payload++;
-					/* discard the bad frame */
-					return -EINVAL;
-				}
-				channel->pkt_size = payload;
-				channel->jpg_size = le32_to_cpu(pdword[4]);
-				break;
-			case S2255_MARKER_RESPONSE:
-
-				pdata += DEF_USB_BLOCK;
-				jj += DEF_USB_BLOCK;
-				if (le32_to_cpu(pdword[1]) >= MAX_CHANNELS)
-					break;
-				cc = G_chnmap[le32_to_cpu(pdword[1])];
-				if (cc >= MAX_CHANNELS)
-					break;
-				channel = &dev->channel[cc];
-				switch (pdword[2]) {
-				case S2255_RESPONSE_SETMODE:
-					/* check if channel valid */
-					/* set mode ready */
-					channel->setmode_ready = 1;
-					wake_up(&channel->wait_setmode);
-					dprintk(5, "setmode ready %d\n", cc);
-					break;
-				case S2255_RESPONSE_FW:
-					dev->chn_ready |= (1 << cc);
-					if ((dev->chn_ready & 0x0f) != 0x0f)
-						break;
-					/* all channels ready */
-					printk(KERN_INFO "s2255: fw loaded\n");
-					atomic_set(&dev->fw_data->fw_state,
-						   S2255_FW_SUCCESS);
-					wake_up(&dev->fw_data->wait_fw);
-					break;
-				case S2255_RESPONSE_STATUS:
-					channel->vidstatus = le32_to_cpu(pdword[3]);
-					channel->vidstatus_ready = 1;
-					wake_up(&channel->wait_vidstatus);
-					dprintk(5, "got vidstatus %x chan %d\n",
-						le32_to_cpu(pdword[3]), cc);
-					break;
-				default:
-					printk(KERN_INFO "s2255 unknown resp\n");
-				}
-			default:
-				pdata++;
-				break;
-			}
-			if (bframe)
-				break;
-		} /* for */
-		if (!bframe)
-			return -EINVAL;
-	}
-	channel = &dev->channel[dev->cc];
-	idx = channel->cur_frame;
-	frm = &channel->buffer.frame[idx];
-	/* search done.  now find out if should be acquiring on this channel */
-	if (!channel->b_acquire) {
-		/* we found a frame, but this channel is turned off */
-		frm->ulState = S2255_READ_IDLE;
-		return -EINVAL;
-	}
-
-	if (frm->ulState == S2255_READ_IDLE) {
-		frm->ulState = S2255_READ_FRAME;
-		frm->cur_size = 0;
-	}
-
-	/* skip the marker 512 bytes (and offset if out of sync) */
-	psrc = (u8 *)pipe_info->transfer_buffer + offset;
-
-
-	if (frm->lpvbits == NULL) {
-		dprintk(1, "s2255 frame buffer == NULL.%p %p %d %d",
-			frm, dev, dev->cc, idx);
-		return -ENOMEM;
-	}
-
-	pdest = frm->lpvbits + frm->cur_size;
-
-	copy_size = (pipe_info->cur_transfer_size - offset);
-
-	size = channel->pkt_size - PREFIX_SIZE;
-
-	/* sanity check on pdest */
-	if ((copy_size + frm->cur_size) < channel->req_image_size)
-		memcpy(pdest, psrc, copy_size);
-
-	frm->cur_size += copy_size;
-	dprintk(4, "cur_size size %lu size %lu \n", frm->cur_size, size);
-
-	if (frm->cur_size >= size) {
-		dprintk(2, "****************[%d]Buffer[%d]full*************\n",
-			dev->cc, idx);
-		channel->last_frame = channel->cur_frame;
-		channel->cur_frame++;
-		/* end of system frame ring buffer, start at zero */
-		if ((channel->cur_frame == SYS_FRAMES) ||
-		    (channel->cur_frame == channel->buffer.dwFrames))
-			channel->cur_frame = 0;
-		/* frame ready */
-		if (channel->b_acquire)
-			s2255_got_frame(channel, channel->jpg_size);
-		channel->frame_count++;
-		frm->ulState = S2255_READ_IDLE;
-		frm->cur_size = 0;
-
-	}
-	/* done successfully */
-	return 0;
-}
-
-static void s2255_read_video_callback(struct s2255_dev *dev,
-				      struct s2255_pipeinfo *pipe_info)
-{
-	int res;
-	dprintk(50, "callback read video \n");
-
-	if (dev->cc >= MAX_CHANNELS) {
-		dev->cc = 0;
-		dev_err(&dev->udev->dev, "invalid channel\n");
-		return;
-	}
-	/* otherwise copy to the system buffers */
-	res = save_frame(dev, pipe_info);
-	if (res != 0)
-		dprintk(4, "s2255: read callback failed\n");
-
-	dprintk(50, "callback read video done\n");
-	return;
-}
-
-static long s2255_vendor_req(struct s2255_dev *dev, unsigned char Request,
-			     u16 Index, u16 Value, void *TransferBuffer,
-			     s32 TransferBufferLength, int bOut)
-{
-	int r;
-	if (!bOut) {
-		r = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
-				    Request,
-				    USB_TYPE_VENDOR | USB_RECIP_DEVICE |
-				    USB_DIR_IN,
-				    Value, Index, TransferBuffer,
-				    TransferBufferLength, HZ * 5);
-	} else {
-		r = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
-				    Request, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-				    Value, Index, TransferBuffer,
-				    TransferBufferLength, HZ * 5);
-	}
-	return r;
-}
-
-/*
- * retrieve FX2 firmware version. future use.
- * @param dev pointer to device extension
- * @return -1 for fail, else returns firmware version as an int(16 bits)
- */
-static int s2255_get_fx2fw(struct s2255_dev *dev)
-{
-	int fw;
-	int ret;
-	unsigned char transBuffer[64];
-	ret = s2255_vendor_req(dev, S2255_VR_FW, 0, 0, transBuffer, 2,
-			       S2255_VR_IN);
-	if (ret < 0)
-		dprintk(2, "get fw error: %x\n", ret);
-	fw = transBuffer[0] + (transBuffer[1] << 8);
-	dprintk(2, "Get FW %x %x\n", transBuffer[0], transBuffer[1]);
-	return fw;
-}
-
-/*
- * Create the system ring buffer to copy frames into from the
- * usb read pipe.
- */
-static int s2255_create_sys_buffers(struct s2255_channel *channel)
-{
-	unsigned long i;
-	unsigned long reqsize;
-	dprintk(1, "create sys buffers\n");
-	channel->buffer.dwFrames = SYS_FRAMES;
-	/* always allocate maximum size(PAL) for system buffers */
-	reqsize = SYS_FRAMES_MAXSIZE;
-
-	if (reqsize > SYS_FRAMES_MAXSIZE)
-		reqsize = SYS_FRAMES_MAXSIZE;
-
-	for (i = 0; i < SYS_FRAMES; i++) {
-		/* allocate the frames */
-		channel->buffer.frame[i].lpvbits = vmalloc(reqsize);
-		dprintk(1, "valloc %p chan %d, idx %lu, pdata %p\n",
-			&channel->buffer.frame[i], channel->idx, i,
-			channel->buffer.frame[i].lpvbits);
-		channel->buffer.frame[i].size = reqsize;
-		if (channel->buffer.frame[i].lpvbits == NULL) {
-			printk(KERN_INFO "out of memory.  using less frames\n");
-			channel->buffer.dwFrames = i;
-			break;
-		}
-	}
-
-	/* make sure internal states are set */
-	for (i = 0; i < SYS_FRAMES; i++) {
-		channel->buffer.frame[i].ulState = 0;
-		channel->buffer.frame[i].cur_size = 0;
-	}
-
-	channel->cur_frame = 0;
-	channel->last_frame = -1;
-	return 0;
-}
-
-static int s2255_release_sys_buffers(struct s2255_channel *channel)
-{
-	unsigned long i;
-	dprintk(1, "release sys buffers\n");
-	for (i = 0; i < SYS_FRAMES; i++) {
-		if (channel->buffer.frame[i].lpvbits) {
-			dprintk(1, "vfree %p\n",
-				channel->buffer.frame[i].lpvbits);
-			vfree(channel->buffer.frame[i].lpvbits);
-		}
-		channel->buffer.frame[i].lpvbits = NULL;
-	}
-	return 0;
-}
-
-static int s2255_board_init(struct s2255_dev *dev)
-{
-	struct s2255_mode mode_def = DEF_MODEI_NTSC_CONT;
-	int fw_ver;
-	int j;
-	struct s2255_pipeinfo *pipe = &dev->pipe;
-	dprintk(4, "board init: %p", dev);
-	memset(pipe, 0, sizeof(*pipe));
-	pipe->dev = dev;
-	pipe->cur_transfer_size = S2255_USB_XFER_SIZE;
-	pipe->max_transfer_size = S2255_USB_XFER_SIZE;
-
-	pipe->transfer_buffer = kzalloc(pipe->max_transfer_size,
-					GFP_KERNEL);
-	if (pipe->transfer_buffer == NULL) {
-		dprintk(1, "out of memory!\n");
-		return -ENOMEM;
-	}
-	/* query the firmware */
-	fw_ver = s2255_get_fx2fw(dev);
-
-	printk(KERN_INFO "s2255: usb firmware version %d.%d\n",
-	       (fw_ver >> 8) & 0xff,
-	       fw_ver & 0xff);
-
-	if (fw_ver < S2255_CUR_USB_FWVER)
-		printk(KERN_INFO "s2255: newer USB firmware available\n");
-
-	for (j = 0; j < MAX_CHANNELS; j++) {
-		struct s2255_channel *channel = &dev->channel[j];
-		channel->b_acquire = 0;
-		channel->mode = mode_def;
-		if (dev->pid == 0x2257 && j > 1)
-			channel->mode.color |= (1 << 16);
-		channel->jc.quality = S2255_DEF_JPEG_QUAL;
-		channel->width = LINE_SZ_4CIFS_NTSC;
-		channel->height = NUM_LINES_4CIFS_NTSC * 2;
-		channel->fmt = &formats[0];
-		channel->mode.restart = 1;
-		channel->req_image_size = get_transfer_size(&mode_def);
-		channel->frame_count = 0;
-		/* create the system buffers */
-		s2255_create_sys_buffers(channel);
-	}
-	/* start read pipe */
-	s2255_start_readpipe(dev);
-	dprintk(1, "%s: success\n", __func__);
-	return 0;
-}
-
-static int s2255_board_shutdown(struct s2255_dev *dev)
-{
-	u32 i;
-	dprintk(1, "%s: dev: %p", __func__,  dev);
-
-	for (i = 0; i < MAX_CHANNELS; i++) {
-		if (dev->channel[i].b_acquire)
-			s2255_stop_acquire(&dev->channel[i]);
-	}
-	s2255_stop_readpipe(dev);
-	for (i = 0; i < MAX_CHANNELS; i++)
-		s2255_release_sys_buffers(&dev->channel[i]);
-	/* release transfer buffer */
-	kfree(dev->pipe.transfer_buffer);
-	return 0;
-}
-
-static void read_pipe_completion(struct urb *purb)
-{
-	struct s2255_pipeinfo *pipe_info;
-	struct s2255_dev *dev;
-	int status;
-	int pipe;
-	pipe_info = purb->context;
-	dprintk(100, "%s: urb:%p, status %d\n", __func__, purb,
-		purb->status);
-	if (pipe_info == NULL) {
-		dev_err(&purb->dev->dev, "no context!\n");
-		return;
-	}
-
-	dev = pipe_info->dev;
-	if (dev == NULL) {
-		dev_err(&purb->dev->dev, "no context!\n");
-		return;
-	}
-	status = purb->status;
-	/* if shutting down, do not resubmit, exit immediately */
-	if (status == -ESHUTDOWN) {
-		dprintk(2, "%s: err shutdown\n", __func__);
-		pipe_info->err_count++;
-		return;
-	}
-
-	if (pipe_info->state == 0) {
-		dprintk(2, "%s: exiting USB pipe", __func__);
-		return;
-	}
-
-	if (status == 0)
-		s2255_read_video_callback(dev, pipe_info);
-	else {
-		pipe_info->err_count++;
-		dprintk(1, "%s: failed URB %d\n", __func__, status);
-	}
-
-	pipe = usb_rcvbulkpipe(dev->udev, dev->read_endpoint);
-	/* reuse urb */
-	usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev,
-			  pipe,
-			  pipe_info->transfer_buffer,
-			  pipe_info->cur_transfer_size,
-			  read_pipe_completion, pipe_info);
-
-	if (pipe_info->state != 0) {
-		if (usb_submit_urb(pipe_info->stream_urb, GFP_ATOMIC)) {
-			dev_err(&dev->udev->dev, "error submitting urb\n");
-		}
-	} else {
-		dprintk(2, "%s :complete state 0\n", __func__);
-	}
-	return;
-}
-
-static int s2255_start_readpipe(struct s2255_dev *dev)
-{
-	int pipe;
-	int retval;
-	struct s2255_pipeinfo *pipe_info = &dev->pipe;
-	pipe = usb_rcvbulkpipe(dev->udev, dev->read_endpoint);
-	dprintk(2, "%s: IN %d\n", __func__, dev->read_endpoint);
-	pipe_info->state = 1;
-	pipe_info->err_count = 0;
-	pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!pipe_info->stream_urb) {
-		dev_err(&dev->udev->dev,
-			"ReadStream: Unable to alloc URB\n");
-		return -ENOMEM;
-	}
-	/* transfer buffer allocated in board_init */
-	usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev,
-			  pipe,
-			  pipe_info->transfer_buffer,
-			  pipe_info->cur_transfer_size,
-			  read_pipe_completion, pipe_info);
-	retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL);
-	if (retval) {
-		printk(KERN_ERR "s2255: start read pipe failed\n");
-		return retval;
-	}
-	return 0;
-}
-
-/* starts acquisition process */
-static int s2255_start_acquire(struct s2255_channel *channel)
-{
-	unsigned char *buffer;
-	int res;
-	unsigned long chn_rev;
-	int j;
-	struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
-	chn_rev = G_chnmap[channel->idx];
-	buffer = kzalloc(512, GFP_KERNEL);
-	if (buffer == NULL) {
-		dev_err(&dev->udev->dev, "out of mem\n");
-		return -ENOMEM;
-	}
-
-	channel->last_frame = -1;
-	channel->bad_payload = 0;
-	channel->cur_frame = 0;
-	for (j = 0; j < SYS_FRAMES; j++) {
-		channel->buffer.frame[j].ulState = 0;
-		channel->buffer.frame[j].cur_size = 0;
-	}
-
-	/* send the start command */
-	*(__le32 *) buffer = IN_DATA_TOKEN;
-	*((__le32 *) buffer + 1) = (__le32) cpu_to_le32(chn_rev);
-	*((__le32 *) buffer + 2) = CMD_START;
-	res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
-	if (res != 0)
-		dev_err(&dev->udev->dev, "CMD_START error\n");
-
-	dprintk(2, "start acquire exit[%d] %d \n", channel->idx, res);
-	kfree(buffer);
-	return 0;
-}
-
-static int s2255_stop_acquire(struct s2255_channel *channel)
-{
-	unsigned char *buffer;
-	int res;
-	unsigned long chn_rev;
-	struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
-	chn_rev = G_chnmap[channel->idx];
-	buffer = kzalloc(512, GFP_KERNEL);
-	if (buffer == NULL) {
-		dev_err(&dev->udev->dev, "out of mem\n");
-		return -ENOMEM;
-	}
-	/* send the stop command */
-	*(__le32 *) buffer = IN_DATA_TOKEN;
-	*((__le32 *) buffer + 1) = (__le32) cpu_to_le32(chn_rev);
-	*((__le32 *) buffer + 2) = CMD_STOP;
-	res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
-	if (res != 0)
-		dev_err(&dev->udev->dev, "CMD_STOP error\n");
-	kfree(buffer);
-	channel->b_acquire = 0;
-	dprintk(4, "%s: chn %d, res %d\n", __func__, channel->idx, res);
-	return res;
-}
-
-static void s2255_stop_readpipe(struct s2255_dev *dev)
-{
-	struct s2255_pipeinfo *pipe = &dev->pipe;
-
-	pipe->state = 0;
-	if (pipe->stream_urb) {
-		/* cancel urb */
-		usb_kill_urb(pipe->stream_urb);
-		usb_free_urb(pipe->stream_urb);
-		pipe->stream_urb = NULL;
-	}
-	dprintk(4, "%s", __func__);
-	return;
-}
-
-static void s2255_fwload_start(struct s2255_dev *dev, int reset)
-{
-	if (reset)
-		s2255_reset_dsppower(dev);
-	dev->fw_data->fw_size = dev->fw_data->fw->size;
-	atomic_set(&dev->fw_data->fw_state, S2255_FW_NOTLOADED);
-	memcpy(dev->fw_data->pfw_data,
-	       dev->fw_data->fw->data, CHUNK_SIZE);
-	dev->fw_data->fw_loaded = CHUNK_SIZE;
-	usb_fill_bulk_urb(dev->fw_data->fw_urb, dev->udev,
-			  usb_sndbulkpipe(dev->udev, 2),
-			  dev->fw_data->pfw_data,
-			  CHUNK_SIZE, s2255_fwchunk_complete,
-			  dev->fw_data);
-	mod_timer(&dev->timer, jiffies + HZ);
-}
-
-/* standard usb probe function */
-static int s2255_probe(struct usb_interface *interface,
-		       const struct usb_device_id *id)
-{
-	struct s2255_dev *dev = NULL;
-	struct usb_host_interface *iface_desc;
-	struct usb_endpoint_descriptor *endpoint;
-	int i;
-	int retval = -ENOMEM;
-	__le32 *pdata;
-	int fw_size;
-	dprintk(2, "%s\n", __func__);
-	/* allocate memory for our device state and initialize it to zero */
-	dev = kzalloc(sizeof(struct s2255_dev), GFP_KERNEL);
-	if (dev == NULL) {
-		s2255_dev_err(&interface->dev, "out of memory\n");
-		return -ENOMEM;
-	}
-	atomic_set(&dev->num_channels, 0);
-	dev->pid = id->idProduct;
-	dev->fw_data = kzalloc(sizeof(struct s2255_fw), GFP_KERNEL);
-	if (!dev->fw_data)
-		goto errorFWDATA1;
-	mutex_init(&dev->lock);
-	/* grab usb_device and save it */
-	dev->udev = usb_get_dev(interface_to_usbdev(interface));
-	if (dev->udev == NULL) {
-		dev_err(&interface->dev, "null usb device\n");
-		retval = -ENODEV;
-		goto errorUDEV;
-	}
-	dprintk(1, "dev: %p, udev %p interface %p\n", dev,
-		dev->udev, interface);
-	dev->interface = interface;
-	/* set up the endpoint information  */
-	iface_desc = interface->cur_altsetting;
-	dprintk(1, "num endpoints %d\n", iface_desc->desc.bNumEndpoints);
-	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
-		endpoint = &iface_desc->endpoint[i].desc;
-		if (!dev->read_endpoint && usb_endpoint_is_bulk_in(endpoint)) {
-			/* we found the bulk in endpoint */
-			dev->read_endpoint = endpoint->bEndpointAddress;
-		}
-	}
-
-	if (!dev->read_endpoint) {
-		dev_err(&interface->dev, "Could not find bulk-in endpoint\n");
-		goto errorEP;
-	}
-	init_timer(&dev->timer);
-	dev->timer.function = s2255_timer;
-	dev->timer.data = (unsigned long)dev->fw_data;
-	init_waitqueue_head(&dev->fw_data->wait_fw);
-	for (i = 0; i < MAX_CHANNELS; i++) {
-		struct s2255_channel *channel = &dev->channel[i];
-		dev->channel[i].idx = i;
-		init_waitqueue_head(&channel->wait_setmode);
-		init_waitqueue_head(&channel->wait_vidstatus);
-	}
-
-	dev->fw_data->fw_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->fw_data->fw_urb) {
-		dev_err(&interface->dev, "out of memory!\n");
-		goto errorFWURB;
-	}
-
-	dev->fw_data->pfw_data = kzalloc(CHUNK_SIZE, GFP_KERNEL);
-	if (!dev->fw_data->pfw_data) {
-		dev_err(&interface->dev, "out of memory!\n");
-		goto errorFWDATA2;
-	}
-	/* load the first chunk */
-	if (request_firmware(&dev->fw_data->fw,
-			     FIRMWARE_FILE_NAME, &dev->udev->dev)) {
-		printk(KERN_ERR "sensoray 2255 failed to get firmware\n");
-		goto errorREQFW;
-	}
-	/* check the firmware is valid */
-	fw_size = dev->fw_data->fw->size;
-	pdata = (__le32 *) &dev->fw_data->fw->data[fw_size - 8];
-
-	if (*pdata != S2255_FW_MARKER) {
-		printk(KERN_INFO "Firmware invalid.\n");
-		retval = -ENODEV;
-		goto errorFWMARKER;
-	} else {
-		/* make sure firmware is the latest */
-		__le32 *pRel;
-		pRel = (__le32 *) &dev->fw_data->fw->data[fw_size - 4];
-		printk(KERN_INFO "s2255 dsp fw version %x\n", *pRel);
-		dev->dsp_fw_ver = le32_to_cpu(*pRel);
-		if (dev->dsp_fw_ver < S2255_CUR_DSP_FWVER)
-			printk(KERN_INFO "s2255: f2255usb.bin out of date.\n");
-		if (dev->pid == 0x2257 &&
-				dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
-			printk(KERN_WARNING "s2255: 2257 requires firmware %d"
-			       " or above.\n", S2255_MIN_DSP_COLORFILTER);
-	}
-	usb_reset_device(dev->udev);
-	/* load 2255 board specific */
-	retval = s2255_board_init(dev);
-	if (retval)
-		goto errorBOARDINIT;
-	spin_lock_init(&dev->slock);
-	s2255_fwload_start(dev, 0);
-	/* loads v4l specific */
-	retval = s2255_probe_v4l(dev);
-	if (retval)
-		goto errorBOARDINIT;
-	dev_info(&interface->dev, "Sensoray 2255 detected\n");
-	return 0;
-errorBOARDINIT:
-	s2255_board_shutdown(dev);
-errorFWMARKER:
-	release_firmware(dev->fw_data->fw);
-errorREQFW:
-	kfree(dev->fw_data->pfw_data);
-errorFWDATA2:
-	usb_free_urb(dev->fw_data->fw_urb);
-errorFWURB:
-	del_timer(&dev->timer);
-errorEP:
-	usb_put_dev(dev->udev);
-errorUDEV:
-	kfree(dev->fw_data);
-	mutex_destroy(&dev->lock);
-errorFWDATA1:
-	kfree(dev);
-	printk(KERN_WARNING "Sensoray 2255 driver load failed: 0x%x\n", retval);
-	return retval;
-}
-
-/* disconnect routine. when board is removed physically or with rmmod */
-static void s2255_disconnect(struct usb_interface *interface)
-{
-	struct s2255_dev *dev = to_s2255_dev(usb_get_intfdata(interface));
-	int i;
-	int channels = atomic_read(&dev->num_channels);
-	mutex_lock(&dev->lock);
-	v4l2_device_disconnect(&dev->v4l2_dev);
-	mutex_unlock(&dev->lock);
-	/*see comments in the uvc_driver.c usb disconnect function */
-	atomic_inc(&dev->num_channels);
-	/* unregister each video device. */
-	for (i = 0; i < channels; i++)
-		video_unregister_device(&dev->channel[i].vdev);
-	/* wake up any of our timers */
-	atomic_set(&dev->fw_data->fw_state, S2255_FW_DISCONNECTING);
-	wake_up(&dev->fw_data->wait_fw);
-	for (i = 0; i < MAX_CHANNELS; i++) {
-		dev->channel[i].setmode_ready = 1;
-		wake_up(&dev->channel[i].wait_setmode);
-		dev->channel[i].vidstatus_ready = 1;
-		wake_up(&dev->channel[i].wait_vidstatus);
-	}
-	if (atomic_dec_and_test(&dev->num_channels))
-		s2255_destroy(dev);
-	dev_info(&interface->dev, "%s\n", __func__);
-}
-
-static struct usb_driver s2255_driver = {
-	.name = S2255_DRIVER_NAME,
-	.probe = s2255_probe,
-	.disconnect = s2255_disconnect,
-	.id_table = s2255_table,
-};
-
-module_usb_driver(s2255_driver);
-
-MODULE_DESCRIPTION("Sensoray 2255 Video for Linux driver");
-MODULE_AUTHOR("Dean Anderson (Sensoray Company Inc.)");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(S2255_VERSION);
-MODULE_FIRMWARE(FIRMWARE_FILE_NAME);