media: zr364xx: deprecate this driver

Deprecate the zr364xx driver. This driver does not use the vb2 framework
for video streaming, instead it uses the old videobuf framework.

We want to get rid of these old drivers, so deprecated it for future
removal.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

5 files changed, 0 insertions, 1655 deletions

diff --git a/drivers/media/usb/Kconfig b/drivers/media/usb/Kconfig
index afbb8dd28b5b..3d0138f8573c 100644
--- a/drivers/media/usb/Kconfig
+++ b/drivers/media/usb/Kconfig
@@ -18,7 +18,6 @@ source "drivers/media/usb/pwc/Kconfig"
 source "drivers/media/usb/s2255/Kconfig"
 source "drivers/media/usb/usbtv/Kconfig"
 source "drivers/media/usb/uvc/Kconfig"
-source "drivers/media/usb/zr364xx/Kconfig"
 
 endif
 
diff --git a/drivers/media/usb/Makefile b/drivers/media/usb/Makefile
index fa8e16ff9b03..7fccc6604b1f 100644
--- a/drivers/media/usb/Makefile
+++ b/drivers/media/usb/Makefile
@@ -12,7 +12,6 @@ obj-y += s2255/
 obj-y += siano/
 obj-y += ttusb-budget/
 obj-y += ttusb-dec/
-obj-y += zr364xx/
 
 # Please keep it alphabetically sorted by Kconfig name
 # (e. g. LC_ALL=C sort Makefile)
diff --git a/drivers/media/usb/zr364xx/Kconfig b/drivers/media/usb/zr364xx/Kconfig
deleted file mode 100644
index a9fb02566c4b..000000000000
--- a/drivers/media/usb/zr364xx/Kconfig
+++ /dev/null
@@ -1,15 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-config USB_ZR364XX
-	tristate "USB ZR364XX Camera support"
-	depends on VIDEO_DEV
-	select VIDEOBUF_GEN
-	select VIDEOBUF_VMALLOC
-	help
-	  Say Y here if you want to connect this type of camera to your
-	  computer's USB port.
-	  See <file:Documentation/admin-guide/media/zr364xx.rst> for more info
-	  and list of supported cameras.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called zr364xx.
-
diff --git a/drivers/media/usb/zr364xx/Makefile b/drivers/media/usb/zr364xx/Makefile
deleted file mode 100644
index edab017d499c..000000000000
--- a/drivers/media/usb/zr364xx/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_USB_ZR364XX)       += zr364xx.o
-
diff --git a/drivers/media/usb/zr364xx/zr364xx.c b/drivers/media/usb/zr364xx/zr364xx.c
deleted file mode 100644
index 538a330046ec..000000000000
--- a/drivers/media/usb/zr364xx/zr364xx.c
+++ /dev/null
@@ -1,1635 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Zoran 364xx based USB webcam module version 0.73
- *
- * Allows you to use your USB webcam with V4L2 applications
- * This is still in heavy development !
- *
- * Copyright (C) 2004  Antoine Jacquet <royale@zerezo.com>
- * http://royale.zerezo.com/zr364xx/
- *
- * Heavily inspired by usb-skeleton.c, vicam.c, cpia.c and spca50x.c drivers
- * V4L2 version inspired by meye.c driver
- *
- * Some video buffer code by Lamarque based on s2255drv.c and vivi.c drivers.
- */
-
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/usb.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-#include <linux/highmem.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-fh.h>
-#include <media/v4l2-event.h>
-#include <media/videobuf-vmalloc.h>
-
-
-/* Version Information */
-#define DRIVER_VERSION "0.7.4"
-#define DRIVER_AUTHOR "Antoine Jacquet, http://royale.zerezo.com/"
-#define DRIVER_DESC "Zoran 364xx"
-
-
-/* Camera */
-#define FRAMES 1
-#define MAX_FRAME_SIZE 200000
-#define BUFFER_SIZE 0x1000
-#define CTRL_TIMEOUT 500
-
-#define ZR364XX_DEF_BUFS	4
-#define ZR364XX_READ_IDLE	0
-#define ZR364XX_READ_FRAME	1
-
-/* Debug macro */
-#define DBG(fmt, args...) \
-	do { \
-		if (debug) { \
-			printk(KERN_INFO KBUILD_MODNAME " " fmt, ##args); \
-		} \
-	} while (0)
-
-/*#define FULL_DEBUG 1*/
-#ifdef FULL_DEBUG
-#define _DBG DBG
-#else
-#define _DBG(fmt, args...)
-#endif
-
-/* Init methods, need to find nicer names for these
- * the exact names of the chipsets would be the best if someone finds it */
-#define METHOD0 0
-#define METHOD1 1
-#define METHOD2 2
-#define METHOD3 3
-
-
-/* Module parameters */
-static int debug;
-static int mode;
-
-
-/* Module parameters interface */
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Debug level");
-module_param(mode, int, 0644);
-MODULE_PARM_DESC(mode, "0 = 320x240, 1 = 160x120, 2 = 640x480");
-
-
-/* Devices supported by this driver
- * .driver_info contains the init method used by the camera */
-static const struct usb_device_id device_table[] = {
-	{USB_DEVICE(0x08ca, 0x0109), .driver_info = METHOD0 },
-	{USB_DEVICE(0x041e, 0x4024), .driver_info = METHOD0 },
-	{USB_DEVICE(0x0d64, 0x0108), .driver_info = METHOD0 },
-	{USB_DEVICE(0x0546, 0x3187), .driver_info = METHOD0 },
-	{USB_DEVICE(0x0d64, 0x3108), .driver_info = METHOD0 },
-	{USB_DEVICE(0x0595, 0x4343), .driver_info = METHOD0 },
-	{USB_DEVICE(0x0bb0, 0x500d), .driver_info = METHOD0 },
-	{USB_DEVICE(0x0feb, 0x2004), .driver_info = METHOD0 },
-	{USB_DEVICE(0x055f, 0xb500), .driver_info = METHOD0 },
-	{USB_DEVICE(0x08ca, 0x2062), .driver_info = METHOD2 },
-	{USB_DEVICE(0x052b, 0x1a18), .driver_info = METHOD1 },
-	{USB_DEVICE(0x04c8, 0x0729), .driver_info = METHOD0 },
-	{USB_DEVICE(0x04f2, 0xa208), .driver_info = METHOD0 },
-	{USB_DEVICE(0x0784, 0x0040), .driver_info = METHOD1 },
-	{USB_DEVICE(0x06d6, 0x0034), .driver_info = METHOD0 },
-	{USB_DEVICE(0x0a17, 0x0062), .driver_info = METHOD2 },
-	{USB_DEVICE(0x06d6, 0x003b), .driver_info = METHOD0 },
-	{USB_DEVICE(0x0a17, 0x004e), .driver_info = METHOD2 },
-	{USB_DEVICE(0x041e, 0x405d), .driver_info = METHOD2 },
-	{USB_DEVICE(0x08ca, 0x2102), .driver_info = METHOD3 },
-	{USB_DEVICE(0x06d6, 0x003d), .driver_info = METHOD0 },
-	{}			/* Terminating entry */
-};
-
-MODULE_DEVICE_TABLE(usb, device_table);
-
-/* frame structure */
-struct zr364xx_framei {
-	unsigned long ulState;	/* ulState:ZR364XX_READ_IDLE,
-					   ZR364XX_READ_FRAME */
-	void *lpvbits;		/* image data */
-	unsigned long cur_size;	/* current data copied to it */
-};
-
-/* image buffer structure */
-struct zr364xx_bufferi {
-	unsigned long dwFrames;			/* number of frames in buffer */
-	struct zr364xx_framei frame[FRAMES];	/* array of FRAME structures */
-};
-
-struct zr364xx_dmaqueue {
-	struct list_head	active;
-	struct zr364xx_camera	*cam;
-};
-
-struct zr364xx_pipeinfo {
-	u32 transfer_size;
-	u8 *transfer_buffer;
-	u32 state;
-	void *stream_urb;
-	void *cam;	/* back pointer to zr364xx_camera struct */
-	u32 err_count;
-	u32 idx;
-};
-
-struct zr364xx_fmt {
-	u32 fourcc;
-	int depth;
-};
-
-/* image formats.  */
-static const struct zr364xx_fmt formats[] = {
-	{
-		.fourcc = V4L2_PIX_FMT_JPEG,
-		.depth = 24
-	}
-};
-
-/* Camera stuff */
-struct zr364xx_camera {
-	struct usb_device *udev;	/* save off the usb device pointer */
-	struct usb_interface *interface;/* the interface for this device */
-	struct v4l2_device v4l2_dev;
-	struct v4l2_ctrl_handler ctrl_handler;
-	struct video_device vdev;	/* v4l video device */
-	struct v4l2_fh *owner;		/* owns the streaming */
-	int nb;
-	struct zr364xx_bufferi		buffer;
-	int skip;
-	int width;
-	int height;
-	int method;
-	struct mutex lock;
-
-	spinlock_t		slock;
-	struct zr364xx_dmaqueue	vidq;
-	int			last_frame;
-	int			cur_frame;
-	unsigned long		frame_count;
-	int			b_acquire;
-	struct zr364xx_pipeinfo	pipe[1];
-
-	u8			read_endpoint;
-
-	const struct zr364xx_fmt *fmt;
-	struct videobuf_queue	vb_vidq;
-	bool was_streaming;
-};
-
-/* buffer for one video frame */
-struct zr364xx_buffer {
-	/* common v4l buffer stuff -- must be first */
-	struct videobuf_buffer vb;
-	const struct zr364xx_fmt *fmt;
-};
-
-/* function used to send initialisation commands to the camera */
-static int send_control_msg(struct usb_device *udev, u8 request, u16 value,
-			    u16 index, unsigned char *cp, u16 size)
-{
-	int status;
-
-	unsigned char *transfer_buffer = kmemdup(cp, size, GFP_KERNEL);
-	if (!transfer_buffer)
-		return -ENOMEM;
-
-	status = usb_control_msg(udev,
-				 usb_sndctrlpipe(udev, 0),
-				 request,
-				 USB_DIR_OUT | USB_TYPE_VENDOR |
-				 USB_RECIP_DEVICE, value, index,
-				 transfer_buffer, size, CTRL_TIMEOUT);
-
-	kfree(transfer_buffer);
-	return status;
-}
-
-
-/* Control messages sent to the camera to initialize it
- * and launch the capture */
-typedef struct {
-	unsigned int value;
-	unsigned int size;
-	unsigned char *bytes;
-} message;
-
-/* method 0 */
-static unsigned char m0d1[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
-static unsigned char m0d2[] = { 0, 0, 0, 0, 0, 0 };
-static unsigned char m0d3[] = { 0, 0 };
-static message m0[] = {
-	{0x1f30, 0, NULL},
-	{0xd000, 0, NULL},
-	{0x3370, sizeof(m0d1), m0d1},
-	{0x2000, 0, NULL},
-	{0x2f0f, 0, NULL},
-	{0x2610, sizeof(m0d2), m0d2},
-	{0xe107, 0, NULL},
-	{0x2502, 0, NULL},
-	{0x1f70, 0, NULL},
-	{0xd000, 0, NULL},
-	{0x9a01, sizeof(m0d3), m0d3},
-	{-1, -1, NULL}
-};
-
-/* method 1 */
-static unsigned char m1d1[] = { 0xff, 0xff };
-static unsigned char m1d2[] = { 0x00, 0x00 };
-static message m1[] = {
-	{0x1f30, 0, NULL},
-	{0xd000, 0, NULL},
-	{0xf000, 0, NULL},
-	{0x2000, 0, NULL},
-	{0x2f0f, 0, NULL},
-	{0x2650, 0, NULL},
-	{0xe107, 0, NULL},
-	{0x2502, sizeof(m1d1), m1d1},
-	{0x1f70, 0, NULL},
-	{0xd000, 0, NULL},
-	{0xd000, 0, NULL},
-	{0xd000, 0, NULL},
-	{0x9a01, sizeof(m1d2), m1d2},
-	{-1, -1, NULL}
-};
-
-/* method 2 */
-static unsigned char m2d1[] = { 0xff, 0xff };
-static message m2[] = {
-	{0x1f30, 0, NULL},
-	{0xf000, 0, NULL},
-	{0x2000, 0, NULL},
-	{0x2f0f, 0, NULL},
-	{0x2650, 0, NULL},
-	{0xe107, 0, NULL},
-	{0x2502, sizeof(m2d1), m2d1},
-	{0x1f70, 0, NULL},
-	{-1, -1, NULL}
-};
-
-/* init table */
-static message *init[4] = { m0, m1, m2, m2 };
-
-
-/* JPEG static data in header (Huffman table, etc) */
-static unsigned char header1[] = {
-	0xFF, 0xD8,
-	/*
-	0xFF, 0xE0, 0x00, 0x10, 'J', 'F', 'I', 'F',
-	0x00, 0x01, 0x01, 0x00, 0x33, 0x8A, 0x00, 0x00, 0x33, 0x88,
-	*/
-	0xFF, 0xDB, 0x00, 0x84
-};
-static unsigned char header2[] = {
-	0xFF, 0xC4, 0x00, 0x1F, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01,
-	0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
-	0xFF, 0xC4, 0x00, 0xB5, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02,
-	0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01,
-	0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06,
-	0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1,
-	0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24, 0x33,
-	0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x25,
-	0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
-	0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54,
-	0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67,
-	0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A,
-	0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94,
-	0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
-	0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8,
-	0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA,
-	0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2,
-	0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3,
-	0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFF, 0xC4, 0x00, 0x1F,
-	0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
-	0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04,
-	0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0xFF, 0xC4, 0x00, 0xB5,
-	0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05,
-	0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11,
-	0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
-	0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1,
-	0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16,
-	0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27,
-	0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44,
-	0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57,
-	0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
-	0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84,
-	0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96,
-	0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
-	0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA,
-	0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3,
-	0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5,
-	0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
-	0xF8, 0xF9, 0xFA, 0xFF, 0xC0, 0x00, 0x11, 0x08, 0x00, 0xF0, 0x01,
-	0x40, 0x03, 0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01,
-	0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11,
-	0x00, 0x3F, 0x00
-};
-static unsigned char header3;
-
-/* ------------------------------------------------------------------
-   Videobuf operations
-   ------------------------------------------------------------------*/
-
-static int buffer_setup(struct videobuf_queue *vq, unsigned int *count,
-			unsigned int *size)
-{
-	struct zr364xx_camera *cam = vq->priv_data;
-
-	*size = cam->width * cam->height * (cam->fmt->depth >> 3);
-
-	if (*count == 0)
-		*count = ZR364XX_DEF_BUFS;
-
-	if (*size * *count > ZR364XX_DEF_BUFS * 1024 * 1024)
-		*count = (ZR364XX_DEF_BUFS * 1024 * 1024) / *size;
-
-	return 0;
-}
-
-static void free_buffer(struct videobuf_queue *vq, struct zr364xx_buffer *buf)
-{
-	_DBG("%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 zr364xx_camera *cam = vq->priv_data;
-	struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer,
-						  vb);
-	int rc;
-
-	DBG("%s, field=%d\n", __func__, field);
-	if (!cam->fmt)
-		return -EINVAL;
-
-	buf->vb.size = cam->width * cam->height * (cam->fmt->depth >> 3);
-
-	if (buf->vb.baddr != 0 && buf->vb.bsize < buf->vb.size) {
-		DBG("invalid buffer prepare\n");
-		return -EINVAL;
-	}
-
-	buf->fmt = cam->fmt;
-	buf->vb.width = cam->width;
-	buf->vb.height = cam->height;
-	buf->vb.field = field;
-
-	if (buf->vb.state == VIDEOBUF_NEEDS_INIT) {
-		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 zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer,
-						  vb);
-	struct zr364xx_camera *cam = vq->priv_data;
-
-	_DBG("%s\n", __func__);
-
-	buf->vb.state = VIDEOBUF_QUEUED;
-	list_add_tail(&buf->vb.queue, &cam->vidq.active);
-}
-
-static void buffer_release(struct videobuf_queue *vq,
-			   struct videobuf_buffer *vb)
-{
-	struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer,
-						  vb);
-
-	_DBG("%s\n", __func__);
-	free_buffer(vq, buf);
-}
-
-static const struct videobuf_queue_ops zr364xx_video_qops = {
-	.buf_setup = buffer_setup,
-	.buf_prepare = buffer_prepare,
-	.buf_queue = buffer_queue,
-	.buf_release = buffer_release,
-};
-
-/********************/
-/* V4L2 integration */
-/********************/
-static int zr364xx_vidioc_streamon(struct file *file, void *priv,
-				   enum v4l2_buf_type type);
-
-static ssize_t zr364xx_read(struct file *file, char __user *buf, size_t count,
-			    loff_t * ppos)
-{
-	struct zr364xx_camera *cam = video_drvdata(file);
-	int err = 0;
-
-	_DBG("%s\n", __func__);
-
-	if (!buf)
-		return -EINVAL;
-
-	if (!count)
-		return -EINVAL;
-
-	if (mutex_lock_interruptible(&cam->lock))
-		return -ERESTARTSYS;
-
-	err = zr364xx_vidioc_streamon(file, file->private_data,
-				V4L2_BUF_TYPE_VIDEO_CAPTURE);
-	if (err == 0) {
-		DBG("%s: reading %d bytes at pos %d.\n", __func__,
-				(int) count, (int) *ppos);
-
-		/* NoMan Sux ! */
-		err = videobuf_read_one(&cam->vb_vidq, buf, count, ppos,
-					file->f_flags & O_NONBLOCK);
-	}
-	mutex_unlock(&cam->lock);
-	return err;
-}
-
-/* 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 zr364xx_fillbuff(struct zr364xx_camera *cam,
-			     struct zr364xx_buffer *buf,
-			     int jpgsize)
-{
-	int pos = 0;
-	const char *tmpbuf;
-	char *vbuf = videobuf_to_vmalloc(&buf->vb);
-	unsigned long last_frame;
-
-	if (!vbuf)
-		return;
-
-	last_frame = cam->last_frame;
-	if (last_frame != -1) {
-		tmpbuf = (const char *)cam->buffer.frame[last_frame].lpvbits;
-		switch (buf->fmt->fourcc) {
-		case V4L2_PIX_FMT_JPEG:
-			buf->vb.size = jpgsize;
-			memcpy(vbuf, tmpbuf, buf->vb.size);
-			break;
-		default:
-			printk(KERN_DEBUG KBUILD_MODNAME ": unknown format?\n");
-		}
-		cam->last_frame = -1;
-	} else {
-		printk(KERN_ERR KBUILD_MODNAME ": =======no frame\n");
-		return;
-	}
-	DBG("%s: Buffer %p size= %d\n", __func__, vbuf, pos);
-	/* tell v4l buffer was filled */
-
-	buf->vb.field_count = cam->frame_count * 2;
-	buf->vb.ts = ktime_get_ns();
-	buf->vb.state = VIDEOBUF_DONE;
-}
-
-static int zr364xx_got_frame(struct zr364xx_camera *cam, int jpgsize)
-{
-	struct zr364xx_dmaqueue *dma_q = &cam->vidq;
-	struct zr364xx_buffer *buf;
-	unsigned long flags = 0;
-	int rc = 0;
-
-	DBG("wakeup: %p\n", &dma_q);
-	spin_lock_irqsave(&cam->slock, flags);
-
-	if (list_empty(&dma_q->active)) {
-		DBG("No active queue to serve\n");
-		rc = -1;
-		goto unlock;
-	}
-	buf = list_entry(dma_q->active.next,
-			 struct zr364xx_buffer, vb.queue);
-
-	if (!waitqueue_active(&buf->vb.done)) {
-		/* no one active */
-		rc = -1;
-		goto unlock;
-	}
-	list_del(&buf->vb.queue);
-	buf->vb.ts = ktime_get_ns();
-	DBG("[%p/%d] wakeup\n", buf, buf->vb.i);
-	zr364xx_fillbuff(cam, buf, jpgsize);
-	wake_up(&buf->vb.done);
-	DBG("wakeup [buf/i] [%p/%d]\n", buf, buf->vb.i);
-unlock:
-	spin_unlock_irqrestore(&cam->slock, flags);
-	return rc;
-}
-
-/* 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).
- */
-static int zr364xx_read_video_callback(struct zr364xx_camera *cam,
-					struct zr364xx_pipeinfo *pipe_info,
-					struct urb *purb)
-{
-	unsigned char *pdest;
-	unsigned char *psrc;
-	s32 idx = cam->cur_frame;
-	struct zr364xx_framei *frm = &cam->buffer.frame[idx];
-	int i = 0;
-	unsigned char *ptr = NULL;
-
-	_DBG("buffer to user\n");
-
-	/* swap bytes if camera needs it */
-	if (cam->method == METHOD0) {
-		u16 *buf = (u16 *)pipe_info->transfer_buffer;
-		for (i = 0; i < purb->actual_length/2; i++)
-			swab16s(buf + i);
-	}
-
-	/* search done.  now find out if should be acquiring */
-	if (!cam->b_acquire) {
-		/* we found a frame, but this channel is turned off */
-		frm->ulState = ZR364XX_READ_IDLE;
-		return -EINVAL;
-	}
-
-	psrc = (u8 *)pipe_info->transfer_buffer;
-	ptr = pdest = frm->lpvbits;
-
-	if (frm->ulState == ZR364XX_READ_IDLE) {
-		if (purb->actual_length < 128) {
-			/* header incomplete */
-			dev_info(&cam->udev->dev,
-				 "%s: buffer (%d bytes) too small to hold jpeg header. Discarding.\n",
-				 __func__, purb->actual_length);
-			return -EINVAL;
-		}
-
-		frm->ulState = ZR364XX_READ_FRAME;
-		frm->cur_size = 0;
-
-		_DBG("jpeg header, ");
-		memcpy(ptr, header1, sizeof(header1));
-		ptr += sizeof(header1);
-		header3 = 0;
-		memcpy(ptr, &header3, 1);
-		ptr++;
-		memcpy(ptr, psrc, 64);
-		ptr += 64;
-		header3 = 1;
-		memcpy(ptr, &header3, 1);
-		ptr++;
-		memcpy(ptr, psrc + 64, 64);
-		ptr += 64;
-		memcpy(ptr, header2, sizeof(header2));
-		ptr += sizeof(header2);
-		memcpy(ptr, psrc + 128,
-		       purb->actual_length - 128);
-		ptr += purb->actual_length - 128;
-		_DBG("header : %d %d %d %d %d %d %d %d %d\n",
-		    psrc[0], psrc[1], psrc[2],
-		    psrc[3], psrc[4], psrc[5],
-		    psrc[6], psrc[7], psrc[8]);
-		frm->cur_size = ptr - pdest;
-	} else {
-		if (frm->cur_size + purb->actual_length > MAX_FRAME_SIZE) {
-			dev_info(&cam->udev->dev,
-				 "%s: buffer (%d bytes) too small to hold frame data. Discarding frame data.\n",
-				 __func__, MAX_FRAME_SIZE);
-		} else {
-			pdest += frm->cur_size;
-			memcpy(pdest, psrc, purb->actual_length);
-			frm->cur_size += purb->actual_length;
-		}
-	}
-	/*_DBG("cur_size %lu urb size %d\n", frm->cur_size,
-		purb->actual_length);*/
-
-	if (purb->actual_length < pipe_info->transfer_size) {
-		_DBG("****************Buffer[%d]full*************\n", idx);
-		cam->last_frame = cam->cur_frame;
-		cam->cur_frame++;
-		/* end of system frame ring buffer, start at zero */
-		if (cam->cur_frame == cam->buffer.dwFrames)
-			cam->cur_frame = 0;
-
-		/* frame ready */
-		/* go back to find the JPEG EOI marker */
-		ptr = pdest = frm->lpvbits;
-		ptr += frm->cur_size - 2;
-		while (ptr > pdest) {
-			if (*ptr == 0xFF && *(ptr + 1) == 0xD9
-			    && *(ptr + 2) == 0xFF)
-				break;
-			ptr--;
-		}
-		if (ptr == pdest)
-			DBG("No EOI marker\n");
-
-		/* Sometimes there is junk data in the middle of the picture,
-		 * we want to skip this bogus frames */
-		while (ptr > pdest) {
-			if (*ptr == 0xFF && *(ptr + 1) == 0xFF
-			    && *(ptr + 2) == 0xFF)
-				break;
-			ptr--;
-		}
-		if (ptr != pdest) {
-			DBG("Bogus frame ? %d\n", ++(cam->nb));
-		} else if (cam->b_acquire) {
-			/* we skip the 2 first frames which are usually buggy */
-			if (cam->skip)
-				cam->skip--;
-			else {
-				_DBG("jpeg(%lu): %d %d %d %d %d %d %d %d\n",
-				    frm->cur_size,
-				    pdest[0], pdest[1], pdest[2], pdest[3],
-				    pdest[4], pdest[5], pdest[6], pdest[7]);
-
-				zr364xx_got_frame(cam, frm->cur_size);
-			}
-		}
-		cam->frame_count++;
-		frm->ulState = ZR364XX_READ_IDLE;
-		frm->cur_size = 0;
-	}
-	/* done successfully */
-	return 0;
-}
-
-static int zr364xx_vidioc_querycap(struct file *file, void *priv,
-				   struct v4l2_capability *cap)
-{
-	struct zr364xx_camera *cam = video_drvdata(file);
-
-	strscpy(cap->driver, DRIVER_DESC, sizeof(cap->driver));
-	if (cam->udev->product)
-		strscpy(cap->card, cam->udev->product, sizeof(cap->card));
-	strscpy(cap->bus_info, dev_name(&cam->udev->dev),
-		sizeof(cap->bus_info));
-	return 0;
-}
-
-static int zr364xx_vidioc_enum_input(struct file *file, void *priv,
-				     struct v4l2_input *i)
-{
-	if (i->index != 0)
-		return -EINVAL;
-	strscpy(i->name, DRIVER_DESC " Camera", sizeof(i->name));
-	i->type = V4L2_INPUT_TYPE_CAMERA;
-	return 0;
-}
-
-static int zr364xx_vidioc_g_input(struct file *file, void *priv,
-				  unsigned int *i)
-{
-	*i = 0;
-	return 0;
-}
-
-static int zr364xx_vidioc_s_input(struct file *file, void *priv,
-				  unsigned int i)
-{
-	if (i != 0)
-		return -EINVAL;
-	return 0;
-}
-
-static int zr364xx_s_ctrl(struct v4l2_ctrl *ctrl)
-{
-	struct zr364xx_camera *cam =
-		container_of(ctrl->handler, struct zr364xx_camera, ctrl_handler);
-	int temp;
-
-	switch (ctrl->id) {
-	case V4L2_CID_BRIGHTNESS:
-		/* hardware brightness */
-		send_control_msg(cam->udev, 1, 0x2001, 0, NULL, 0);
-		temp = (0x60 << 8) + 127 - ctrl->val;
-		send_control_msg(cam->udev, 1, temp, 0, NULL, 0);
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int zr364xx_vidioc_enum_fmt_vid_cap(struct file *file,
-				       void *priv, struct v4l2_fmtdesc *f)
-{
-	if (f->index > 0)
-		return -EINVAL;
-	f->pixelformat = formats[0].fourcc;
-	return 0;
-}
-
-static char *decode_fourcc(__u32 pixelformat, char *buf)
-{
-	buf[0] = pixelformat & 0xff;
-	buf[1] = (pixelformat >> 8) & 0xff;
-	buf[2] = (pixelformat >> 16) & 0xff;
-	buf[3] = (pixelformat >> 24) & 0xff;
-	buf[4] = '\0';
-	return buf;
-}
-
-static int zr364xx_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
-				      struct v4l2_format *f)
-{
-	struct zr364xx_camera *cam = video_drvdata(file);
-	char pixelformat_name[5];
-
-	if (!cam)
-		return -ENODEV;
-
-	if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) {
-		DBG("%s: unsupported pixelformat V4L2_PIX_FMT_%s\n", __func__,
-		    decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name));
-		return -EINVAL;
-	}
-
-	if (!(f->fmt.pix.width == 160 && f->fmt.pix.height == 120) &&
-	    !(f->fmt.pix.width == 640 && f->fmt.pix.height == 480)) {
-		f->fmt.pix.width = 320;
-		f->fmt.pix.height = 240;
-	}
-
-	f->fmt.pix.field = V4L2_FIELD_NONE;
-	f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
-	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
-	f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
-	DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__,
-	    decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name),
-	    f->fmt.pix.field);
-	return 0;
-}
-
-static int zr364xx_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
-				    struct v4l2_format *f)
-{
-	struct zr364xx_camera *cam;
-
-	if (!file)
-		return -ENODEV;
-	cam = video_drvdata(file);
-
-	f->fmt.pix.pixelformat = formats[0].fourcc;
-	f->fmt.pix.field = V4L2_FIELD_NONE;
-	f->fmt.pix.width = cam->width;
-	f->fmt.pix.height = cam->height;
-	f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
-	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
-	f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
-	return 0;
-}
-
-static int zr364xx_vidioc_s_fmt_vid_cap(struct file *file, void *priv,
-				    struct v4l2_format *f)
-{
-	struct zr364xx_camera *cam = video_drvdata(file);
-	struct videobuf_queue *q = &cam->vb_vidq;
-	char pixelformat_name[5];
-	int ret = zr364xx_vidioc_try_fmt_vid_cap(file, cam, f);
-	int i;
-
-	if (ret < 0)
-		return ret;
-
-	mutex_lock(&q->vb_lock);
-
-	if (videobuf_queue_is_busy(&cam->vb_vidq)) {
-		DBG("%s queue busy\n", __func__);
-		ret = -EBUSY;
-		goto out;
-	}
-
-	if (cam->owner) {
-		DBG("%s can't change format after started\n", __func__);
-		ret = -EBUSY;
-		goto out;
-	}
-
-	cam->width = f->fmt.pix.width;
-	cam->height = f->fmt.pix.height;
-	DBG("%s: %dx%d mode selected\n", __func__,
-		 cam->width, cam->height);
-	f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
-	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
-	f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
-	cam->vb_vidq.field = f->fmt.pix.field;
-
-	if (f->fmt.pix.width == 160 && f->fmt.pix.height == 120)
-		mode = 1;
-	else if (f->fmt.pix.width == 640 && f->fmt.pix.height == 480)
-		mode = 2;
-	else
-		mode = 0;
-
-	m0d1[0] = mode;
-	m1[2].value = 0xf000 + mode;
-	m2[1].value = 0xf000 + mode;
-
-	/* special case for METHOD3, the modes are different */
-	if (cam->method == METHOD3) {
-		switch (mode) {
-		case 1:
-			m2[1].value = 0xf000 + 4;
-			break;
-		case 2:
-			m2[1].value = 0xf000 + 0;
-			break;
-		default:
-			m2[1].value = 0xf000 + 1;
-			break;
-		}
-	}
-
-	header2[437] = cam->height / 256;
-	header2[438] = cam->height % 256;
-	header2[439] = cam->width / 256;
-	header2[440] = cam->width % 256;
-
-	for (i = 0; init[cam->method][i].size != -1; i++) {
-		ret =
-		    send_control_msg(cam->udev, 1, init[cam->method][i].value,
-				     0, init[cam->method][i].bytes,
-				     init[cam->method][i].size);
-		if (ret < 0) {
-			dev_err(&cam->udev->dev,
-			   "error during resolution change sequence: %d\n", i);
-			goto out;
-		}
-	}
-
-	/* Added some delay here, since opening/closing the camera quickly,
-	 * like Ekiga does during its startup, can crash the webcam
-	 */
-	mdelay(100);
-	cam->skip = 2;
-	ret = 0;
-
-out:
-	mutex_unlock(&q->vb_lock);
-
-	DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__,
-	    decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name),
-	    f->fmt.pix.field);
-	return ret;
-}
-
-static int zr364xx_vidioc_reqbufs(struct file *file, void *priv,
-			  struct v4l2_requestbuffers *p)
-{
-	struct zr364xx_camera *cam = video_drvdata(file);
-
-	if (cam->owner && cam->owner != priv)
-		return -EBUSY;
-	return videobuf_reqbufs(&cam->vb_vidq, p);
-}
-
-static int zr364xx_vidioc_querybuf(struct file *file,
-				void *priv,
-				struct v4l2_buffer *p)
-{
-	int rc;
-	struct zr364xx_camera *cam = video_drvdata(file);
-	rc = videobuf_querybuf(&cam->vb_vidq, p);
-	return rc;
-}
-
-static int zr364xx_vidioc_qbuf(struct file *file,
-				void *priv,
-				struct v4l2_buffer *p)
-{
-	int rc;
-	struct zr364xx_camera *cam = video_drvdata(file);
-	_DBG("%s\n", __func__);
-	if (cam->owner && cam->owner != priv)
-		return -EBUSY;
-	rc = videobuf_qbuf(&cam->vb_vidq, p);
-	return rc;
-}
-
-static int zr364xx_vidioc_dqbuf(struct file *file,
-				void *priv,
-				struct v4l2_buffer *p)
-{
-	int rc;
-	struct zr364xx_camera *cam = video_drvdata(file);
-	_DBG("%s\n", __func__);
-	if (cam->owner && cam->owner != priv)
-		return -EBUSY;
-	rc = videobuf_dqbuf(&cam->vb_vidq, p, file->f_flags & O_NONBLOCK);
-	return rc;
-}
-
-static void read_pipe_completion(struct urb *purb)
-{
-	struct zr364xx_pipeinfo *pipe_info;
-	struct zr364xx_camera *cam;
-	int pipe;
-
-	pipe_info = purb->context;
-	_DBG("%s %p, status %d\n", __func__, purb, purb->status);
-	if (!pipe_info) {
-		printk(KERN_ERR KBUILD_MODNAME ": no context!\n");
-		return;
-	}
-
-	cam = pipe_info->cam;
-	if (!cam) {
-		printk(KERN_ERR KBUILD_MODNAME ": no context!\n");
-		return;
-	}
-
-	/* if shutting down, do not resubmit, exit immediately */
-	if (purb->status == -ESHUTDOWN) {
-		DBG("%s, err shutdown\n", __func__);
-		pipe_info->err_count++;
-		return;
-	}
-
-	if (pipe_info->state == 0) {
-		DBG("exiting USB pipe\n");
-		return;
-	}
-
-	if (purb->actual_length > pipe_info->transfer_size) {
-		dev_err(&cam->udev->dev, "wrong number of bytes\n");
-		return;
-	}
-
-	if (purb->status == 0)
-		zr364xx_read_video_callback(cam, pipe_info, purb);
-	else {
-		pipe_info->err_count++;
-		DBG("%s: failed URB %d\n", __func__, purb->status);
-	}
-
-	pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint);
-
-	/* reuse urb */
-	usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev,
-			  pipe,
-			  pipe_info->transfer_buffer,
-			  pipe_info->transfer_size,
-			  read_pipe_completion, pipe_info);
-
-	if (pipe_info->state != 0) {
-		purb->status = usb_submit_urb(pipe_info->stream_urb,
-					      GFP_ATOMIC);
-
-		if (purb->status)
-			dev_err(&cam->udev->dev,
-				"error submitting urb (error=%i)\n",
-				purb->status);
-	} else
-		DBG("read pipe complete state 0\n");
-}
-
-static int zr364xx_start_readpipe(struct zr364xx_camera *cam)
-{
-	int pipe;
-	int retval;
-	struct zr364xx_pipeinfo *pipe_info = cam->pipe;
-	pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint);
-	DBG("%s: start pipe IN x%x\n", __func__, cam->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)
-		return -ENOMEM;
-	/* transfer buffer allocated in board_init */
-	usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev,
-			  pipe,
-			  pipe_info->transfer_buffer,
-			  pipe_info->transfer_size,
-			  read_pipe_completion, pipe_info);
-
-	DBG("submitting URB %p\n", pipe_info->stream_urb);
-	retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL);
-	if (retval) {
-		usb_free_urb(pipe_info->stream_urb);
-		printk(KERN_ERR KBUILD_MODNAME ": start read pipe failed\n");
-		return retval;
-	}
-
-	return 0;
-}
-
-static void zr364xx_stop_readpipe(struct zr364xx_camera *cam)
-{
-	struct zr364xx_pipeinfo *pipe_info;
-
-	if (!cam) {
-		printk(KERN_ERR KBUILD_MODNAME ": invalid device\n");
-		return;
-	}
-	DBG("stop read pipe\n");
-	pipe_info = cam->pipe;
-	if (pipe_info) {
-		if (pipe_info->state != 0)
-			pipe_info->state = 0;
-
-		if (pipe_info->stream_urb) {
-			/* cancel urb */
-			usb_kill_urb(pipe_info->stream_urb);
-			usb_free_urb(pipe_info->stream_urb);
-			pipe_info->stream_urb = NULL;
-		}
-	}
-	return;
-}
-
-/* starts acquisition process */
-static int zr364xx_start_acquire(struct zr364xx_camera *cam)
-{
-	int j;
-
-	DBG("start acquire\n");
-
-	cam->last_frame = -1;
-	cam->cur_frame = 0;
-	for (j = 0; j < FRAMES; j++) {
-		cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE;
-		cam->buffer.frame[j].cur_size = 0;
-	}
-	cam->b_acquire = 1;
-	return 0;
-}
-
-static inline int zr364xx_stop_acquire(struct zr364xx_camera *cam)
-{
-	cam->b_acquire = 0;
-	return 0;
-}
-
-static int zr364xx_prepare(struct zr364xx_camera *cam)
-{
-	int res;
-	int i, j;
-
-	for (i = 0; init[cam->method][i].size != -1; i++) {
-		res = send_control_msg(cam->udev, 1, init[cam->method][i].value,
-				     0, init[cam->method][i].bytes,
-				     init[cam->method][i].size);
-		if (res < 0) {
-			dev_err(&cam->udev->dev,
-				"error during open sequence: %d\n", i);
-			return res;
-		}
-	}
-
-	cam->skip = 2;
-	cam->last_frame = -1;
-	cam->cur_frame = 0;
-	cam->frame_count = 0;
-	for (j = 0; j < FRAMES; j++) {
-		cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE;
-		cam->buffer.frame[j].cur_size = 0;
-	}
-	v4l2_ctrl_handler_setup(&cam->ctrl_handler);
-	return 0;
-}
-
-static int zr364xx_vidioc_streamon(struct file *file, void *priv,
-				   enum v4l2_buf_type type)
-{
-	struct zr364xx_camera *cam = video_drvdata(file);
-	int res;
-
-	DBG("%s\n", __func__);
-
-	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
-		return -EINVAL;
-
-	if (cam->owner && cam->owner != priv)
-		return -EBUSY;
-
-	res = zr364xx_prepare(cam);
-	if (res)
-		return res;
-	res = videobuf_streamon(&cam->vb_vidq);
-	if (res == 0) {
-		zr364xx_start_acquire(cam);
-		cam->owner = file->private_data;
-	}
-	return res;
-}
-
-static int zr364xx_vidioc_streamoff(struct file *file, void *priv,
-				    enum v4l2_buf_type type)
-{
-	struct zr364xx_camera *cam = video_drvdata(file);
-
-	DBG("%s\n", __func__);
-	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
-		return -EINVAL;
-	if (cam->owner && cam->owner != priv)
-		return -EBUSY;
-	zr364xx_stop_acquire(cam);
-	return videobuf_streamoff(&cam->vb_vidq);
-}
-
-
-/* open the camera */
-static int zr364xx_open(struct file *file)
-{
-	struct zr364xx_camera *cam = video_drvdata(file);
-	int err;
-
-	DBG("%s\n", __func__);
-
-	if (mutex_lock_interruptible(&cam->lock))
-		return -ERESTARTSYS;
-
-	err = v4l2_fh_open(file);
-	if (err)
-		goto out;
-
-	/* Added some delay here, since opening/closing the camera quickly,
-	 * like Ekiga does during its startup, can crash the webcam
-	 */
-	mdelay(100);
-	err = 0;
-
-out:
-	mutex_unlock(&cam->lock);
-	DBG("%s: %d\n", __func__, err);
-	return err;
-}
-
-static void zr364xx_board_uninit(struct zr364xx_camera *cam)
-{
-	unsigned long i;
-
-	zr364xx_stop_readpipe(cam);
-
-	/* release sys buffers */
-	for (i = 0; i < FRAMES; i++) {
-		if (cam->buffer.frame[i].lpvbits) {
-			DBG("vfree %p\n", cam->buffer.frame[i].lpvbits);
-			vfree(cam->buffer.frame[i].lpvbits);
-		}
-		cam->buffer.frame[i].lpvbits = NULL;
-	}
-
-	/* release transfer buffer */
-	kfree(cam->pipe->transfer_buffer);
-}
-
-static void zr364xx_release(struct v4l2_device *v4l2_dev)
-{
-	struct zr364xx_camera *cam =
-		container_of(v4l2_dev, struct zr364xx_camera, v4l2_dev);
-
-	videobuf_mmap_free(&cam->vb_vidq);
-	v4l2_ctrl_handler_free(&cam->ctrl_handler);
-	zr364xx_board_uninit(cam);
-	v4l2_device_unregister(&cam->v4l2_dev);
-	kfree(cam);
-}
-
-/* release the camera */
-static int zr364xx_close(struct file *file)
-{
-	struct zr364xx_camera *cam;
-	struct usb_device *udev;
-	int i;
-
-	DBG("%s\n", __func__);
-	cam = video_drvdata(file);
-
-	mutex_lock(&cam->lock);
-	udev = cam->udev;
-
-	if (file->private_data == cam->owner) {
-		/* turn off stream */
-		if (cam->b_acquire)
-			zr364xx_stop_acquire(cam);
-		videobuf_streamoff(&cam->vb_vidq);
-
-		for (i = 0; i < 2; i++) {
-			send_control_msg(udev, 1, init[cam->method][i].value,
-					0, init[cam->method][i].bytes,
-					init[cam->method][i].size);
-		}
-		cam->owner = NULL;
-	}
-
-	/* Added some delay here, since opening/closing the camera quickly,
-	 * like Ekiga does during its startup, can crash the webcam
-	 */
-	mdelay(100);
-	mutex_unlock(&cam->lock);
-	return v4l2_fh_release(file);
-}
-
-
-static int zr364xx_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	struct zr364xx_camera *cam = video_drvdata(file);
-	int ret;
-
-	if (!cam) {
-		DBG("%s: cam == NULL\n", __func__);
-		return -ENODEV;
-	}
-	DBG("mmap called, vma=%p\n", vma);
-
-	ret = videobuf_mmap_mapper(&cam->vb_vidq, vma);
-
-	DBG("vma start=0x%08lx, size=%ld, ret=%d\n",
-		(unsigned long)vma->vm_start,
-		(unsigned long)vma->vm_end - (unsigned long)vma->vm_start, ret);
-	return ret;
-}
-
-static __poll_t zr364xx_poll(struct file *file,
-			       struct poll_table_struct *wait)
-{
-	struct zr364xx_camera *cam = video_drvdata(file);
-	struct videobuf_queue *q = &cam->vb_vidq;
-	__poll_t res = v4l2_ctrl_poll(file, wait);
-
-	_DBG("%s\n", __func__);
-
-	return res | videobuf_poll_stream(file, q, wait);
-}
-
-static const struct v4l2_ctrl_ops zr364xx_ctrl_ops = {
-	.s_ctrl = zr364xx_s_ctrl,
-};
-
-static const struct v4l2_file_operations zr364xx_fops = {
-	.owner = THIS_MODULE,
-	.open = zr364xx_open,
-	.release = zr364xx_close,
-	.read = zr364xx_read,
-	.mmap = zr364xx_mmap,
-	.unlocked_ioctl = video_ioctl2,
-	.poll = zr364xx_poll,
-};
-
-static const struct v4l2_ioctl_ops zr364xx_ioctl_ops = {
-	.vidioc_querycap	= zr364xx_vidioc_querycap,
-	.vidioc_enum_fmt_vid_cap = zr364xx_vidioc_enum_fmt_vid_cap,
-	.vidioc_try_fmt_vid_cap	= zr364xx_vidioc_try_fmt_vid_cap,
-	.vidioc_s_fmt_vid_cap	= zr364xx_vidioc_s_fmt_vid_cap,
-	.vidioc_g_fmt_vid_cap	= zr364xx_vidioc_g_fmt_vid_cap,
-	.vidioc_enum_input	= zr364xx_vidioc_enum_input,
-	.vidioc_g_input		= zr364xx_vidioc_g_input,
-	.vidioc_s_input		= zr364xx_vidioc_s_input,
-	.vidioc_streamon	= zr364xx_vidioc_streamon,
-	.vidioc_streamoff	= zr364xx_vidioc_streamoff,
-	.vidioc_reqbufs         = zr364xx_vidioc_reqbufs,
-	.vidioc_querybuf        = zr364xx_vidioc_querybuf,
-	.vidioc_qbuf            = zr364xx_vidioc_qbuf,
-	.vidioc_dqbuf           = zr364xx_vidioc_dqbuf,
-	.vidioc_log_status      = v4l2_ctrl_log_status,
-	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
-	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
-};
-
-static const struct video_device zr364xx_template = {
-	.name = DRIVER_DESC,
-	.fops = &zr364xx_fops,
-	.ioctl_ops = &zr364xx_ioctl_ops,
-	.release = video_device_release_empty,
-	.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
-		       V4L2_CAP_STREAMING,
-};
-
-
-
-/*******************/
-/* USB integration */
-/*******************/
-static int zr364xx_board_init(struct zr364xx_camera *cam)
-{
-	struct zr364xx_pipeinfo *pipe = cam->pipe;
-	unsigned long i;
-	int err;
-
-	DBG("board init: %p\n", cam);
-	memset(pipe, 0, sizeof(*pipe));
-	pipe->cam = cam;
-	pipe->transfer_size = BUFFER_SIZE;
-
-	pipe->transfer_buffer = kzalloc(pipe->transfer_size,
-					GFP_KERNEL);
-	if (!pipe->transfer_buffer) {
-		DBG("out of memory!\n");
-		return -ENOMEM;
-	}
-
-	cam->b_acquire = 0;
-	cam->frame_count = 0;
-
-	/*** start create system buffers ***/
-	for (i = 0; i < FRAMES; i++) {
-		/* always allocate maximum size for system buffers */
-		cam->buffer.frame[i].lpvbits = vmalloc(MAX_FRAME_SIZE);
-
-		DBG("valloc %p, idx %lu, pdata %p\n",
-			&cam->buffer.frame[i], i,
-			cam->buffer.frame[i].lpvbits);
-		if (!cam->buffer.frame[i].lpvbits) {
-			printk(KERN_INFO KBUILD_MODNAME ": out of memory. Using less frames\n");
-			break;
-		}
-	}
-
-	if (i == 0) {
-		printk(KERN_INFO KBUILD_MODNAME ": out of memory. Aborting\n");
-		err = -ENOMEM;
-		goto err_free;
-	} else
-		cam->buffer.dwFrames = i;
-
-	/* make sure internal states are set */
-	for (i = 0; i < FRAMES; i++) {
-		cam->buffer.frame[i].ulState = ZR364XX_READ_IDLE;
-		cam->buffer.frame[i].cur_size = 0;
-	}
-
-	cam->cur_frame = 0;
-	cam->last_frame = -1;
-	/*** end create system buffers ***/
-
-	/* start read pipe */
-	err = zr364xx_start_readpipe(cam);
-	if (err)
-		goto err_free_frames;
-
-	DBG(": board initialized\n");
-	return 0;
-
-err_free_frames:
-	for (i = 0; i < FRAMES; i++)
-		vfree(cam->buffer.frame[i].lpvbits);
-err_free:
-	kfree(cam->pipe->transfer_buffer);
-	cam->pipe->transfer_buffer = NULL;
-	return err;
-}
-
-static int zr364xx_probe(struct usb_interface *intf,
-			 const struct usb_device_id *id)
-{
-	struct usb_device *udev = interface_to_usbdev(intf);
-	struct zr364xx_camera *cam = NULL;
-	struct usb_host_interface *iface_desc;
-	struct usb_endpoint_descriptor *endpoint;
-	struct v4l2_ctrl_handler *hdl;
-	int err;
-	int i;
-
-	DBG("probing...\n");
-
-	dev_info(&intf->dev, DRIVER_DESC " compatible webcam plugged\n");
-	dev_info(&intf->dev, "model %04x:%04x detected\n",
-		 le16_to_cpu(udev->descriptor.idVendor),
-		 le16_to_cpu(udev->descriptor.idProduct));
-
-	cam = kzalloc(sizeof(*cam), GFP_KERNEL);
-	if (!cam)
-		return -ENOMEM;
-
-	err = v4l2_device_register(&intf->dev, &cam->v4l2_dev);
-	if (err < 0) {
-		dev_err(&udev->dev, "couldn't register v4l2_device\n");
-		goto free_cam;
-	}
-	hdl = &cam->ctrl_handler;
-	v4l2_ctrl_handler_init(hdl, 1);
-	v4l2_ctrl_new_std(hdl, &zr364xx_ctrl_ops,
-			  V4L2_CID_BRIGHTNESS, 0, 127, 1, 64);
-	if (hdl->error) {
-		err = hdl->error;
-		dev_err(&udev->dev, "couldn't register control\n");
-		goto free_hdlr_and_unreg_dev;
-	}
-	/* save the init method used by this camera */
-	cam->method = id->driver_info;
-	mutex_init(&cam->lock);
-	cam->vdev = zr364xx_template;
-	cam->vdev.lock = &cam->lock;
-	cam->vdev.v4l2_dev = &cam->v4l2_dev;
-	cam->vdev.ctrl_handler = &cam->ctrl_handler;
-	video_set_drvdata(&cam->vdev, cam);
-
-	cam->udev = udev;
-
-	switch (mode) {
-	case 1:
-		dev_info(&udev->dev, "160x120 mode selected\n");
-		cam->width = 160;
-		cam->height = 120;
-		break;
-	case 2:
-		dev_info(&udev->dev, "640x480 mode selected\n");
-		cam->width = 640;
-		cam->height = 480;
-		break;
-	default:
-		dev_info(&udev->dev, "320x240 mode selected\n");
-		cam->width = 320;
-		cam->height = 240;
-		break;
-	}
-
-	m0d1[0] = mode;
-	m1[2].value = 0xf000 + mode;
-	m2[1].value = 0xf000 + mode;
-
-	/* special case for METHOD3, the modes are different */
-	if (cam->method == METHOD3) {
-		switch (mode) {
-		case 1:
-			m2[1].value = 0xf000 + 4;
-			break;
-		case 2:
-			m2[1].value = 0xf000 + 0;
-			break;
-		default:
-			m2[1].value = 0xf000 + 1;
-			break;
-		}
-	}
-
-	header2[437] = cam->height / 256;
-	header2[438] = cam->height % 256;
-	header2[439] = cam->width / 256;
-	header2[440] = cam->width % 256;
-
-	cam->nb = 0;
-
-	DBG("dev: %p, udev %p interface %p\n", cam, cam->udev, intf);
-
-	/* set up the endpoint information  */
-	iface_desc = intf->cur_altsetting;
-	DBG("num endpoints %d\n", iface_desc->desc.bNumEndpoints);
-	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
-		endpoint = &iface_desc->endpoint[i].desc;
-		if (!cam->read_endpoint && usb_endpoint_is_bulk_in(endpoint)) {
-			/* we found the bulk in endpoint */
-			cam->read_endpoint = endpoint->bEndpointAddress;
-		}
-	}
-
-	if (!cam->read_endpoint) {
-		err = -ENOMEM;
-		dev_err(&intf->dev, "Could not find bulk-in endpoint\n");
-		goto free_hdlr_and_unreg_dev;
-	}
-
-	/* v4l */
-	INIT_LIST_HEAD(&cam->vidq.active);
-	cam->vidq.cam = cam;
-
-	usb_set_intfdata(intf, cam);
-
-	/* load zr364xx board specific */
-	err = zr364xx_board_init(cam);
-	if (err)
-		goto free_hdlr_and_unreg_dev;
-	err = v4l2_ctrl_handler_setup(hdl);
-	if (err)
-		goto board_uninit;
-
-	spin_lock_init(&cam->slock);
-
-	cam->fmt = formats;
-
-	videobuf_queue_vmalloc_init(&cam->vb_vidq, &zr364xx_video_qops,
-				    NULL, &cam->slock,
-				    V4L2_BUF_TYPE_VIDEO_CAPTURE,
-				    V4L2_FIELD_NONE,
-				    sizeof(struct zr364xx_buffer), cam, &cam->lock);
-
-	err = video_register_device(&cam->vdev, VFL_TYPE_VIDEO, -1);
-	if (err) {
-		dev_err(&udev->dev, "video_register_device failed\n");
-		goto board_uninit;
-	}
-	cam->v4l2_dev.release = zr364xx_release;
-
-	dev_info(&udev->dev, DRIVER_DESC " controlling device %s\n",
-		 video_device_node_name(&cam->vdev));
-	return 0;
-
-board_uninit:
-	zr364xx_board_uninit(cam);
-free_hdlr_and_unreg_dev:
-	v4l2_ctrl_handler_free(hdl);
-	v4l2_device_unregister(&cam->v4l2_dev);
-free_cam:
-	kfree(cam);
-	return err;
-}
-
-
-static void zr364xx_disconnect(struct usb_interface *intf)
-{
-	struct zr364xx_camera *cam = usb_get_intfdata(intf);
-
-	mutex_lock(&cam->lock);
-	usb_set_intfdata(intf, NULL);
-	dev_info(&intf->dev, DRIVER_DESC " webcam unplugged\n");
-	video_unregister_device(&cam->vdev);
-	v4l2_device_disconnect(&cam->v4l2_dev);
-
-	/* stops the read pipe if it is running */
-	if (cam->b_acquire)
-		zr364xx_stop_acquire(cam);
-
-	zr364xx_stop_readpipe(cam);
-	mutex_unlock(&cam->lock);
-	v4l2_device_put(&cam->v4l2_dev);
-}
-
-
-#ifdef CONFIG_PM
-static int zr364xx_suspend(struct usb_interface *intf, pm_message_t message)
-{
-	struct zr364xx_camera *cam = usb_get_intfdata(intf);
-
-	cam->was_streaming = cam->b_acquire;
-	if (!cam->was_streaming)
-		return 0;
-	zr364xx_stop_acquire(cam);
-	zr364xx_stop_readpipe(cam);
-	return 0;
-}
-
-static int zr364xx_resume(struct usb_interface *intf)
-{
-	struct zr364xx_camera *cam = usb_get_intfdata(intf);
-	int res;
-
-	if (!cam->was_streaming)
-		return 0;
-
-	res = zr364xx_start_readpipe(cam);
-	if (res)
-		return res;
-
-	res = zr364xx_prepare(cam);
-	if (res)
-		goto err_prepare;
-
-	zr364xx_start_acquire(cam);
-	return 0;
-
-err_prepare:
-	zr364xx_stop_readpipe(cam);
-	return res;
-}
-#endif
-
-/**********************/
-/* Module integration */
-/**********************/
-
-static struct usb_driver zr364xx_driver = {
-	.name = "zr364xx",
-	.probe = zr364xx_probe,
-	.disconnect = zr364xx_disconnect,
-#ifdef CONFIG_PM
-	.suspend = zr364xx_suspend,
-	.resume = zr364xx_resume,
-	.reset_resume = zr364xx_resume,
-#endif
-	.id_table = device_table
-};
-
-module_usb_driver(zr364xx_driver);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRIVER_VERSION);