Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 1202 insertions, 0 deletions

diff --git a/drivers/media/video/pwc/pwc-v4l.c b/drivers/media/video/pwc/pwc-v4l.c
new file mode 100644
index 00000000000..b7eb3ce3b96
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-v4l.c
@@ -0,0 +1,1202 @@
+/* Linux driver for Philips webcam
+   USB and Video4Linux interface part.
+   (C) 1999-2004 Nemosoft Unv.
+   (C) 2004-2006 Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/poll.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <asm/io.h>
+
+#include "pwc.h"
+
+static struct v4l2_queryctrl pwc_controls[] = {
+	{
+	    .id      = V4L2_CID_BRIGHTNESS,
+	    .type    = V4L2_CTRL_TYPE_INTEGER,
+	    .name    = "Brightness",
+	    .minimum = 0,
+	    .maximum = 128,
+	    .step    = 1,
+	    .default_value = 64,
+	},
+	{
+	    .id      = V4L2_CID_CONTRAST,
+	    .type    = V4L2_CTRL_TYPE_INTEGER,
+	    .name    = "Contrast",
+	    .minimum = 0,
+	    .maximum = 64,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_SATURATION,
+	    .type    = V4L2_CTRL_TYPE_INTEGER,
+	    .name    = "Saturation",
+	    .minimum = -100,
+	    .maximum = 100,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_GAMMA,
+	    .type    = V4L2_CTRL_TYPE_INTEGER,
+	    .name    = "Gamma",
+	    .minimum = 0,
+	    .maximum = 32,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_RED_BALANCE,
+	    .type    = V4L2_CTRL_TYPE_INTEGER,
+	    .name    = "Red Gain",
+	    .minimum = 0,
+	    .maximum = 256,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_BLUE_BALANCE,
+	    .type    = V4L2_CTRL_TYPE_INTEGER,
+	    .name    = "Blue Gain",
+	    .minimum = 0,
+	    .maximum = 256,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_AUTO_WHITE_BALANCE,
+	    .type    = V4L2_CTRL_TYPE_BOOLEAN,
+	    .name    = "Auto White Balance",
+	    .minimum = 0,
+	    .maximum = 1,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_EXPOSURE,
+	    .type    = V4L2_CTRL_TYPE_INTEGER,
+	    .name    = "Shutter Speed (Exposure)",
+	    .minimum = 0,
+	    .maximum = 256,
+	    .step    = 1,
+	    .default_value = 200,
+	},
+	{
+	    .id      = V4L2_CID_AUTOGAIN,
+	    .type    = V4L2_CTRL_TYPE_BOOLEAN,
+	    .name    = "Auto Gain Enabled",
+	    .minimum = 0,
+	    .maximum = 1,
+	    .step    = 1,
+	    .default_value = 1,
+	},
+	{
+	    .id      = V4L2_CID_GAIN,
+	    .type    = V4L2_CTRL_TYPE_INTEGER,
+	    .name    = "Gain Level",
+	    .minimum = 0,
+	    .maximum = 256,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_PRIVATE_SAVE_USER,
+	    .type    = V4L2_CTRL_TYPE_BUTTON,
+	    .name    = "Save User Settings",
+	    .minimum = 0,
+	    .maximum = 0,
+	    .step    = 0,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_PRIVATE_RESTORE_USER,
+	    .type    = V4L2_CTRL_TYPE_BUTTON,
+	    .name    = "Restore User Settings",
+	    .minimum = 0,
+	    .maximum = 0,
+	    .step    = 0,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_PRIVATE_RESTORE_FACTORY,
+	    .type    = V4L2_CTRL_TYPE_BUTTON,
+	    .name    = "Restore Factory Settings",
+	    .minimum = 0,
+	    .maximum = 0,
+	    .step    = 0,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_PRIVATE_COLOUR_MODE,
+	    .type    = V4L2_CTRL_TYPE_BOOLEAN,
+	    .name    = "Colour mode",
+	    .minimum = 0,
+	    .maximum = 1,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_PRIVATE_AUTOCONTOUR,
+	    .type    = V4L2_CTRL_TYPE_BOOLEAN,
+	    .name    = "Auto contour",
+	    .minimum = 0,
+	    .maximum = 1,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_PRIVATE_CONTOUR,
+	    .type    = V4L2_CTRL_TYPE_INTEGER,
+	    .name    = "Contour",
+	    .minimum = 0,
+	    .maximum = 63,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_PRIVATE_BACKLIGHT,
+	    .type    = V4L2_CTRL_TYPE_BOOLEAN,
+	    .name    = "Backlight compensation",
+	    .minimum = 0,
+	    .maximum = 1,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	  .id      = V4L2_CID_PRIVATE_FLICKERLESS,
+	    .type    = V4L2_CTRL_TYPE_BOOLEAN,
+	    .name    = "Flickerless",
+	    .minimum = 0,
+	    .maximum = 1,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+	{
+	    .id      = V4L2_CID_PRIVATE_NOISE_REDUCTION,
+	    .type    = V4L2_CTRL_TYPE_INTEGER,
+	    .name    = "Noise reduction",
+	    .minimum = 0,
+	    .maximum = 3,
+	    .step    = 1,
+	    .default_value = 0,
+	},
+};
+
+
+static void pwc_vidioc_fill_fmt(const struct pwc_device *pdev, struct v4l2_format *f)
+{
+	memset(&f->fmt.pix, 0, sizeof(struct v4l2_pix_format));
+	f->fmt.pix.width        = pdev->view.x;
+	f->fmt.pix.height       = pdev->view.y;
+	f->fmt.pix.field        = V4L2_FIELD_NONE;
+	if (pdev->vpalette == VIDEO_PALETTE_YUV420P) {
+		f->fmt.pix.pixelformat  = V4L2_PIX_FMT_YUV420;
+		f->fmt.pix.bytesperline = (f->fmt.pix.width * 3)/2;
+		f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+	} else {
+		/* vbandlength contains 4 lines ...  */
+		f->fmt.pix.bytesperline = pdev->vbandlength/4;
+		f->fmt.pix.sizeimage = pdev->frame_size + sizeof(struct pwc_raw_frame);
+		if (DEVICE_USE_CODEC1(pdev->type))
+			f->fmt.pix.pixelformat  = V4L2_PIX_FMT_PWC1;
+		else
+			f->fmt.pix.pixelformat  = V4L2_PIX_FMT_PWC2;
+	}
+	PWC_DEBUG_IOCTL("pwc_vidioc_fill_fmt() "
+			"width=%d, height=%d, bytesperline=%d, sizeimage=%d, pixelformat=%c%c%c%c\n",
+			f->fmt.pix.width,
+			f->fmt.pix.height,
+			f->fmt.pix.bytesperline,
+			f->fmt.pix.sizeimage,
+			(f->fmt.pix.pixelformat)&255,
+			(f->fmt.pix.pixelformat>>8)&255,
+			(f->fmt.pix.pixelformat>>16)&255,
+			(f->fmt.pix.pixelformat>>24)&255);
+}
+
+/* ioctl(VIDIOC_TRY_FMT) */
+static int pwc_vidioc_try_fmt(struct pwc_device *pdev, struct v4l2_format *f)
+{
+	if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+		PWC_DEBUG_IOCTL("Bad video type must be V4L2_BUF_TYPE_VIDEO_CAPTURE\n");
+		return -EINVAL;
+	}
+
+	switch (f->fmt.pix.pixelformat) {
+		case V4L2_PIX_FMT_YUV420:
+			break;
+		case V4L2_PIX_FMT_PWC1:
+			if (DEVICE_USE_CODEC23(pdev->type)) {
+				PWC_DEBUG_IOCTL("codec1 is only supported for old pwc webcam\n");
+				return -EINVAL;
+			}
+			break;
+		case V4L2_PIX_FMT_PWC2:
+			if (DEVICE_USE_CODEC1(pdev->type)) {
+				PWC_DEBUG_IOCTL("codec23 is only supported for new pwc webcam\n");
+				return -EINVAL;
+			}
+			break;
+		default:
+			PWC_DEBUG_IOCTL("Unsupported pixel format\n");
+			return -EINVAL;
+
+	}
+
+	if (f->fmt.pix.width > pdev->view_max.x)
+		f->fmt.pix.width = pdev->view_max.x;
+	else if (f->fmt.pix.width < pdev->view_min.x)
+		f->fmt.pix.width = pdev->view_min.x;
+
+	if (f->fmt.pix.height > pdev->view_max.y)
+		f->fmt.pix.height = pdev->view_max.y;
+	else if (f->fmt.pix.height < pdev->view_min.y)
+		f->fmt.pix.height = pdev->view_min.y;
+
+	return 0;
+}
+
+/* ioctl(VIDIOC_SET_FMT) */
+static int pwc_vidioc_set_fmt(struct pwc_device *pdev, struct v4l2_format *f)
+{
+	int ret, fps, snapshot, compression, pixelformat;
+
+	ret = pwc_vidioc_try_fmt(pdev, f);
+	if (ret<0)
+		return ret;
+
+	pixelformat = f->fmt.pix.pixelformat;
+	compression = pdev->vcompression;
+	snapshot = 0;
+	fps = pdev->vframes;
+	if (f->fmt.pix.priv) {
+		compression = (f->fmt.pix.priv & PWC_QLT_MASK) >> PWC_QLT_SHIFT;
+		snapshot = !!(f->fmt.pix.priv & PWC_FPS_SNAPSHOT);
+		fps = (f->fmt.pix.priv & PWC_FPS_FRMASK) >> PWC_FPS_SHIFT;
+		if (fps == 0)
+			fps = pdev->vframes;
+	}
+
+	if (pixelformat == V4L2_PIX_FMT_YUV420)
+		pdev->vpalette = VIDEO_PALETTE_YUV420P;
+	else
+		pdev->vpalette = VIDEO_PALETTE_RAW;
+
+	PWC_DEBUG_IOCTL("Try to change format to: width=%d height=%d fps=%d "
+			"compression=%d snapshot=%d format=%c%c%c%c\n",
+			f->fmt.pix.width, f->fmt.pix.height, fps,
+			compression, snapshot,
+			(pixelformat)&255,
+			(pixelformat>>8)&255,
+			(pixelformat>>16)&255,
+			(pixelformat>>24)&255);
+
+	ret = pwc_try_video_mode(pdev,
+				 f->fmt.pix.width,
+				 f->fmt.pix.height,
+				 fps,
+				 compression,
+				 snapshot);
+
+	PWC_DEBUG_IOCTL("pwc_try_video_mode(), return=%d\n", ret);
+
+	if (ret)
+		return ret;
+
+	pwc_vidioc_fill_fmt(pdev, f);
+
+	return 0;
+
+}
+
+int pwc_video_do_ioctl(struct inode *inode, struct file *file,
+		       unsigned int cmd, void *arg)
+{
+	struct video_device *vdev = video_devdata(file);
+	struct pwc_device *pdev;
+	DECLARE_WAITQUEUE(wait, current);
+
+	if (vdev == NULL)
+		return -EFAULT;
+	pdev = vdev->priv;
+	if (pdev == NULL)
+		return -EFAULT;
+
+#if CONFIG_PWC_DEBUG
+	if (PWC_DEBUG_LEVEL_IOCTL & pwc_trace)
+		v4l_printk_ioctl(cmd);
+#endif
+
+
+	switch (cmd) {
+		/* Query cabapilities */
+		case VIDIOCGCAP:
+		{
+			struct video_capability *caps = arg;
+
+			strcpy(caps->name, vdev->name);
+			caps->type = VID_TYPE_CAPTURE;
+			caps->channels = 1;
+			caps->audios = 1;
+			caps->minwidth  = pdev->view_min.x;
+			caps->minheight = pdev->view_min.y;
+			caps->maxwidth  = pdev->view_max.x;
+			caps->maxheight = pdev->view_max.y;
+			break;
+		}
+
+		/* Channel functions (simulate 1 channel) */
+		case VIDIOCGCHAN:
+		{
+			struct video_channel *v = arg;
+
+			if (v->channel != 0)
+				return -EINVAL;
+			v->flags = 0;
+			v->tuners = 0;
+			v->type = VIDEO_TYPE_CAMERA;
+			strcpy(v->name, "Webcam");
+			return 0;
+		}
+
+		case VIDIOCSCHAN:
+		{
+			/* The spec says the argument is an integer, but
+			   the bttv driver uses a video_channel arg, which
+			   makes sense becasue it also has the norm flag.
+			 */
+			struct video_channel *v = arg;
+			if (v->channel != 0)
+				return -EINVAL;
+			return 0;
+		}
+
+
+		/* Picture functions; contrast etc. */
+		case VIDIOCGPICT:
+		{
+			struct video_picture *p = arg;
+			int val;
+
+			val = pwc_get_brightness(pdev);
+			if (val >= 0)
+				p->brightness = (val<<9);
+			else
+				p->brightness = 0xffff;
+			val = pwc_get_contrast(pdev);
+			if (val >= 0)
+				p->contrast = (val<<10);
+			else
+				p->contrast = 0xffff;
+			/* Gamma, Whiteness, what's the difference? :) */
+			val = pwc_get_gamma(pdev);
+			if (val >= 0)
+				p->whiteness = (val<<11);
+			else
+				p->whiteness = 0xffff;
+			if (pwc_get_saturation(pdev, &val)<0)
+				p->colour = 0xffff;
+			else
+				p->colour = 32768 + val * 327;
+			p->depth = 24;
+			p->palette = pdev->vpalette;
+			p->hue = 0xFFFF; /* N/A */
+			break;
+		}
+
+		case VIDIOCSPICT:
+		{
+			struct video_picture *p = arg;
+			/*
+			 *	FIXME:	Suppose we are mid read
+				ANSWER: No problem: the firmware of the camera
+					can handle brightness/contrast/etc
+					changes at _any_ time, and the palette
+					is used exactly once in the uncompress
+					routine.
+			 */
+			pwc_set_brightness(pdev, p->brightness);
+			pwc_set_contrast(pdev, p->contrast);
+			pwc_set_gamma(pdev, p->whiteness);
+			pwc_set_saturation(pdev, (p->colour-32768)/327);
+			if (p->palette && p->palette != pdev->vpalette) {
+				switch (p->palette) {
+					case VIDEO_PALETTE_YUV420P:
+					case VIDEO_PALETTE_RAW:
+						pdev->vpalette = p->palette;
+						return pwc_try_video_mode(pdev, pdev->image.x, pdev->image.y, pdev->vframes, pdev->vcompression, pdev->vsnapshot);
+						break;
+					default:
+						return -EINVAL;
+						break;
+				}
+			}
+			break;
+		}
+
+		/* Window/size parameters */
+		case VIDIOCGWIN:
+		{
+			struct video_window *vw = arg;
+
+			vw->x = 0;
+			vw->y = 0;
+			vw->width = pdev->view.x;
+			vw->height = pdev->view.y;
+			vw->chromakey = 0;
+			vw->flags = (pdev->vframes << PWC_FPS_SHIFT) |
+				   (pdev->vsnapshot ? PWC_FPS_SNAPSHOT : 0);
+			break;
+		}
+
+		case VIDIOCSWIN:
+		{
+			struct video_window *vw = arg;
+			int fps, snapshot, ret;
+
+			fps = (vw->flags & PWC_FPS_FRMASK) >> PWC_FPS_SHIFT;
+			snapshot = vw->flags & PWC_FPS_SNAPSHOT;
+			if (fps == 0)
+				fps = pdev->vframes;
+			if (pdev->view.x == vw->width && pdev->view.y && fps == pdev->vframes && snapshot == pdev->vsnapshot)
+				return 0;
+			ret = pwc_try_video_mode(pdev, vw->width, vw->height, fps, pdev->vcompression, snapshot);
+			if (ret)
+				return ret;
+			break;
+		}
+
+		/* We don't have overlay support (yet) */
+		case VIDIOCGFBUF:
+		{
+			struct video_buffer *vb = arg;
+
+			memset(vb,0,sizeof(*vb));
+			break;
+		}
+
+		/* mmap() functions */
+		case VIDIOCGMBUF:
+		{
+			/* Tell the user program how much memory is needed for a mmap() */
+			struct video_mbuf *vm = arg;
+			int i;
+
+			memset(vm, 0, sizeof(*vm));
+			vm->size = pwc_mbufs * pdev->len_per_image;
+			vm->frames = pwc_mbufs; /* double buffering should be enough for most applications */
+			for (i = 0; i < pwc_mbufs; i++)
+				vm->offsets[i] = i * pdev->len_per_image;
+			break;
+		}
+
+		case VIDIOCMCAPTURE:
+		{
+			/* Start capture into a given image buffer (called 'frame' in video_mmap structure) */
+			struct video_mmap *vm = arg;
+
+			PWC_DEBUG_READ("VIDIOCMCAPTURE: %dx%d, frame %d, format %d\n", vm->width, vm->height, vm->frame, vm->format);
+			if (vm->frame < 0 || vm->frame >= pwc_mbufs)
+				return -EINVAL;
+
+			/* xawtv is nasty. It probes the available palettes
+			   by setting a very small image size and trying
+			   various palettes... The driver doesn't support
+			   such small images, so I'm working around it.
+			 */
+			if (vm->format)
+			{
+				switch (vm->format)
+				{
+					case VIDEO_PALETTE_YUV420P:
+					case VIDEO_PALETTE_RAW:
+						break;
+					default:
+						return -EINVAL;
+						break;
+				}
+			}
+
+			if ((vm->width != pdev->view.x || vm->height != pdev->view.y) &&
+			    (vm->width >= pdev->view_min.x && vm->height >= pdev->view_min.y)) {
+				int ret;
+
+				PWC_DEBUG_OPEN("VIDIOCMCAPTURE: changing size to please xawtv :-(.\n");
+				ret = pwc_try_video_mode(pdev, vm->width, vm->height, pdev->vframes, pdev->vcompression, pdev->vsnapshot);
+				if (ret)
+					return ret;
+			} /* ... size mismatch */
+
+			/* FIXME: should we lock here? */
+			if (pdev->image_used[vm->frame])
+				return -EBUSY;	/* buffer wasn't available. Bummer */
+			pdev->image_used[vm->frame] = 1;
+
+			/* Okay, we're done here. In the SYNC call we wait until a
+			   frame comes available, then expand image into the given
+			   buffer.
+			   In contrast to the CPiA cam the Philips cams deliver a
+			   constant stream, almost like a grabber card. Also,
+			   we have separate buffers for the rawdata and the image,
+			   meaning we can nearly always expand into the requested buffer.
+			 */
+			PWC_DEBUG_READ("VIDIOCMCAPTURE done.\n");
+			break;
+		}
+
+		case VIDIOCSYNC:
+		{
+			/* The doc says: "Whenever a buffer is used it should
+			   call VIDIOCSYNC to free this frame up and continue."
+
+			   The only odd thing about this whole procedure is
+			   that MCAPTURE flags the buffer as "in use", and
+			   SYNC immediately unmarks it, while it isn't
+			   after SYNC that you know that the buffer actually
+			   got filled! So you better not start a CAPTURE in
+			   the same frame immediately (use double buffering).
+			   This is not a problem for this cam, since it has
+			   extra intermediate buffers, but a hardware
+			   grabber card will then overwrite the buffer
+			   you're working on.
+			 */
+			int *mbuf = arg;
+			int ret;
+
+			PWC_DEBUG_READ("VIDIOCSYNC called (%d).\n", *mbuf);
+
+			/* bounds check */
+			if (*mbuf < 0 || *mbuf >= pwc_mbufs)
+				return -EINVAL;
+			/* check if this buffer was requested anyway */
+			if (pdev->image_used[*mbuf] == 0)
+				return -EINVAL;
+
+			/* Add ourselves to the frame wait-queue.
+
+			   FIXME: needs auditing for safety.
+			   QUESTION: In what respect? I think that using the
+				     frameq is safe now.
+			 */
+			add_wait_queue(&pdev->frameq, &wait);
+			while (pdev->full_frames == NULL) {
+				/* Check for unplugged/etc. here */
+				if (pdev->error_status) {
+					remove_wait_queue(&pdev->frameq, &wait);
+					set_current_state(TASK_RUNNING);
+					return -pdev->error_status;
+				}
+
+				if (signal_pending(current)) {
+					remove_wait_queue(&pdev->frameq, &wait);
+					set_current_state(TASK_RUNNING);
+					return -ERESTARTSYS;
+				}
+				schedule();
+				set_current_state(TASK_INTERRUPTIBLE);
+			}
+			remove_wait_queue(&pdev->frameq, &wait);
+			set_current_state(TASK_RUNNING);
+
+			/* The frame is ready. Expand in the image buffer
+			   requested by the user. I don't care if you
+			   mmap() 5 buffers and request data in this order:
+			   buffer 4 2 3 0 1 2 3 0 4 3 1 . . .
+			   Grabber hardware may not be so forgiving.
+			 */
+			PWC_DEBUG_READ("VIDIOCSYNC: frame ready.\n");
+			pdev->fill_image = *mbuf; /* tell in which buffer we want the image to be expanded */
+			/* Decompress, etc */
+			ret = pwc_handle_frame(pdev);
+			pdev->image_used[*mbuf] = 0;
+			if (ret)
+				return -EFAULT;
+			break;
+		}
+
+		case VIDIOCGAUDIO:
+		{
+			struct video_audio *v = arg;
+
+			strcpy(v->name, "Microphone");
+			v->audio = -1; /* unknown audio minor */
+			v->flags = 0;
+			v->mode = VIDEO_SOUND_MONO;
+			v->volume = 0;
+			v->bass = 0;
+			v->treble = 0;
+			v->balance = 0x8000;
+			v->step = 1;
+			break;
+		}
+
+		case VIDIOCSAUDIO:
+		{
+			/* Dummy: nothing can be set */
+			break;
+		}
+
+		case VIDIOCGUNIT:
+		{
+			struct video_unit *vu = arg;
+
+			vu->video = pdev->vdev->minor & 0x3F;
+			vu->audio = -1; /* not known yet */
+			vu->vbi = -1;
+			vu->radio = -1;
+			vu->teletext = -1;
+			break;
+		}
+
+		/* V4L2 Layer */
+		case VIDIOC_QUERYCAP:
+		{
+		    struct v4l2_capability *cap = arg;
+
+		    PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCAP) This application "\
+				       "try to use the v4l2 layer\n");
+		    strcpy(cap->driver,PWC_NAME);
+		    strlcpy(cap->card, vdev->name, sizeof(cap->card));
+		    usb_make_path(pdev->udev,cap->bus_info,sizeof(cap->bus_info));
+		    cap->version = PWC_VERSION_CODE;
+		    cap->capabilities =
+			V4L2_CAP_VIDEO_CAPTURE	|
+			V4L2_CAP_STREAMING	|
+			V4L2_CAP_READWRITE;
+		    return 0;
+		}
+
+		case VIDIOC_ENUMINPUT:
+		{
+		    struct v4l2_input *i = arg;
+
+		    if ( i->index )	/* Only one INPUT is supported */
+			  return -EINVAL;
+
+		    memset(i, 0, sizeof(struct v4l2_input));
+		    strcpy(i->name, "usb");
+		    return 0;
+		}
+
+		case VIDIOC_G_INPUT:
+		{
+		    int *i = arg;
+		    *i = 0;	/* Only one INPUT is supported */
+		    return 0;
+		}
+		case VIDIOC_S_INPUT:
+		{
+			int *i = arg;
+
+			if ( *i ) {	/* Only one INPUT is supported */
+				PWC_DEBUG_IOCTL("Only one input source is"\
+					" supported with this webcam.\n");
+				return -EINVAL;
+			}
+			return 0;
+		}
+
+		/* TODO: */
+		case VIDIOC_QUERYCTRL:
+		{
+			struct v4l2_queryctrl *c = arg;
+			int i;
+
+			PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCTRL) query id=%d\n", c->id);
+			for (i=0; i<sizeof(pwc_controls)/sizeof(struct v4l2_queryctrl); i++) {
+				if (pwc_controls[i].id == c->id) {
+					PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCTRL) found\n");
+					memcpy(c,&pwc_controls[i],sizeof(struct v4l2_queryctrl));
+					return 0;
+				}
+			}
+			PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCTRL) not found\n");
+
+			return -EINVAL;
+		}
+		case VIDIOC_G_CTRL:
+		{
+			struct v4l2_control *c = arg;
+			int ret;
+
+			switch (c->id)
+			{
+				case V4L2_CID_BRIGHTNESS:
+					c->value = pwc_get_brightness(pdev);
+					if (c->value<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_CONTRAST:
+					c->value = pwc_get_contrast(pdev);
+					if (c->value<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_SATURATION:
+					ret = pwc_get_saturation(pdev, &c->value);
+					if (ret<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_GAMMA:
+					c->value = pwc_get_gamma(pdev);
+					if (c->value<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_RED_BALANCE:
+					ret = pwc_get_red_gain(pdev, &c->value);
+					if (ret<0)
+						return -EINVAL;
+					c->value >>= 8;
+					return 0;
+				case V4L2_CID_BLUE_BALANCE:
+					ret = pwc_get_blue_gain(pdev, &c->value);
+					if (ret<0)
+						return -EINVAL;
+					c->value >>= 8;
+					return 0;
+				case V4L2_CID_AUTO_WHITE_BALANCE:
+					ret = pwc_get_awb(pdev);
+					if (ret<0)
+						return -EINVAL;
+					c->value = (ret == PWC_WB_MANUAL)?0:1;
+					return 0;
+				case V4L2_CID_GAIN:
+					ret = pwc_get_agc(pdev, &c->value);
+					if (ret<0)
+						return -EINVAL;
+					c->value >>= 8;
+					return 0;
+				case V4L2_CID_AUTOGAIN:
+					ret = pwc_get_agc(pdev, &c->value);
+					if (ret<0)
+						return -EINVAL;
+					c->value = (c->value < 0)?1:0;
+					return 0;
+				case V4L2_CID_EXPOSURE:
+					ret = pwc_get_shutter_speed(pdev, &c->value);
+					if (ret<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_PRIVATE_COLOUR_MODE:
+					ret = pwc_get_colour_mode(pdev, &c->value);
+					if (ret < 0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_PRIVATE_AUTOCONTOUR:
+					ret = pwc_get_contour(pdev, &c->value);
+					if (ret < 0)
+						return -EINVAL;
+					c->value=(c->value == -1?1:0);
+					return 0;
+				case V4L2_CID_PRIVATE_CONTOUR:
+					ret = pwc_get_contour(pdev, &c->value);
+					if (ret < 0)
+						return -EINVAL;
+					c->value >>= 10;
+					return 0;
+				case V4L2_CID_PRIVATE_BACKLIGHT:
+					ret = pwc_get_backlight(pdev, &c->value);
+					if (ret < 0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_PRIVATE_FLICKERLESS:
+					ret = pwc_get_flicker(pdev, &c->value);
+					if (ret < 0)
+						return -EINVAL;
+					c->value=(c->value?1:0);
+					return 0;
+				case V4L2_CID_PRIVATE_NOISE_REDUCTION:
+					ret = pwc_get_dynamic_noise(pdev, &c->value);
+					if (ret < 0)
+						return -EINVAL;
+					return 0;
+
+				case V4L2_CID_PRIVATE_SAVE_USER:
+				case V4L2_CID_PRIVATE_RESTORE_USER:
+				case V4L2_CID_PRIVATE_RESTORE_FACTORY:
+					return -EINVAL;
+			}
+			return -EINVAL;
+		}
+		case VIDIOC_S_CTRL:
+		{
+			struct v4l2_control *c = arg;
+			int ret;
+
+			switch (c->id)
+			{
+				case V4L2_CID_BRIGHTNESS:
+					c->value <<= 9;
+					ret = pwc_set_brightness(pdev, c->value);
+					if (ret<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_CONTRAST:
+					c->value <<= 10;
+					ret = pwc_set_contrast(pdev, c->value);
+					if (ret<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_SATURATION:
+					ret = pwc_set_saturation(pdev, c->value);
+					if (ret<0)
+					  return -EINVAL;
+					return 0;
+				case V4L2_CID_GAMMA:
+					c->value <<= 11;
+					ret = pwc_set_gamma(pdev, c->value);
+					if (ret<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_RED_BALANCE:
+					c->value <<= 8;
+					ret = pwc_set_red_gain(pdev, c->value);
+					if (ret<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_BLUE_BALANCE:
+					c->value <<= 8;
+					ret = pwc_set_blue_gain(pdev, c->value);
+					if (ret<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_AUTO_WHITE_BALANCE:
+					c->value = (c->value == 0)?PWC_WB_MANUAL:PWC_WB_AUTO;
+					ret = pwc_set_awb(pdev, c->value);
+					if (ret<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_EXPOSURE:
+					c->value <<= 8;
+					ret = pwc_set_shutter_speed(pdev, c->value?0:1, c->value);
+					if (ret<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_AUTOGAIN:
+					/* autogain off means nothing without a gain */
+					if (c->value == 0)
+						return 0;
+					ret = pwc_set_agc(pdev, c->value, 0);
+					if (ret<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_GAIN:
+					c->value <<= 8;
+					ret = pwc_set_agc(pdev, 0, c->value);
+					if (ret<0)
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_PRIVATE_SAVE_USER:
+					if (pwc_save_user(pdev))
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_PRIVATE_RESTORE_USER:
+					if (pwc_restore_user(pdev))
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_PRIVATE_RESTORE_FACTORY:
+					if (pwc_restore_factory(pdev))
+						return -EINVAL;
+					return 0;
+				case V4L2_CID_PRIVATE_COLOUR_MODE:
+					ret = pwc_set_colour_mode(pdev, c->value);
+					if (ret < 0)
+					  return -EINVAL;
+					return 0;
+				case V4L2_CID_PRIVATE_AUTOCONTOUR:
+				  c->value=(c->value == 1)?-1:0;
+				  ret = pwc_set_contour(pdev, c->value);
+				  if (ret < 0)
+				    return -EINVAL;
+				  return 0;
+				case V4L2_CID_PRIVATE_CONTOUR:
+				  c->value <<= 10;
+				  ret = pwc_set_contour(pdev, c->value);
+				  if (ret < 0)
+				    return -EINVAL;
+				  return 0;
+				case V4L2_CID_PRIVATE_BACKLIGHT:
+				  ret = pwc_set_backlight(pdev, c->value);
+				  if (ret < 0)
+				    return -EINVAL;
+				  return 0;
+				case V4L2_CID_PRIVATE_FLICKERLESS:
+				  ret = pwc_set_flicker(pdev, c->value);
+				  if (ret < 0)
+				    return -EINVAL;
+				case V4L2_CID_PRIVATE_NOISE_REDUCTION:
+				  ret = pwc_set_dynamic_noise(pdev, c->value);
+				  if (ret < 0)
+				    return -EINVAL;
+				  return 0;
+
+			}
+			return -EINVAL;
+		}
+
+		case VIDIOC_ENUM_FMT:
+		{
+			struct v4l2_fmtdesc *f = arg;
+			int index;
+
+			if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+			      return -EINVAL;
+
+			/* We only support two format: the raw format, and YUV */
+			index = f->index;
+			memset(f,0,sizeof(struct v4l2_fmtdesc));
+			f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+			f->index = index;
+			switch(index)
+			{
+				case 0:
+					/* RAW format */
+					f->pixelformat = pdev->type<=646?V4L2_PIX_FMT_PWC1:V4L2_PIX_FMT_PWC2;
+					f->flags = V4L2_FMT_FLAG_COMPRESSED;
+					strlcpy(f->description,"Raw Philips Webcam",sizeof(f->description));
+					break;
+				case 1:
+					f->pixelformat = V4L2_PIX_FMT_YUV420;
+					strlcpy(f->description,"4:2:0, planar, Y-Cb-Cr",sizeof(f->description));
+					break;
+				default:
+					return -EINVAL;
+			}
+			return 0;
+		}
+
+		case VIDIOC_G_FMT:
+		{
+			struct v4l2_format *f = arg;
+
+			PWC_DEBUG_IOCTL("ioctl(VIDIOC_G_FMT) return size %dx%d\n",pdev->image.x,pdev->image.y);
+			if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+			      return -EINVAL;
+
+			pwc_vidioc_fill_fmt(pdev, f);
+
+			return 0;
+		}
+
+		case VIDIOC_TRY_FMT:
+			return pwc_vidioc_try_fmt(pdev, arg);
+
+		case VIDIOC_S_FMT:
+			return pwc_vidioc_set_fmt(pdev, arg);
+
+		case VIDIOC_G_STD:
+		{
+			v4l2_std_id *std = arg;
+			*std = V4L2_STD_UNKNOWN;
+			return 0;
+		}
+
+		case VIDIOC_S_STD:
+		{
+			v4l2_std_id *std = arg;
+			if (*std != V4L2_STD_UNKNOWN)
+				return -EINVAL;
+			return 0;
+		}
+
+		case VIDIOC_ENUMSTD:
+		{
+			struct v4l2_standard *std = arg;
+			if (std->index != 0)
+				return -EINVAL;
+			std->id = V4L2_STD_UNKNOWN;
+			strncpy(std->name, "webcam", sizeof(std->name));
+			return 0;
+		}
+
+		case VIDIOC_REQBUFS:
+		{
+			struct v4l2_requestbuffers *rb = arg;
+			int nbuffers;
+
+			PWC_DEBUG_IOCTL("ioctl(VIDIOC_REQBUFS) count=%d\n",rb->count);
+			if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+				return -EINVAL;
+			if (rb->memory != V4L2_MEMORY_MMAP)
+				return -EINVAL;
+
+			nbuffers = rb->count;
+			if (nbuffers < 2)
+				nbuffers = 2;
+			else if (nbuffers > pwc_mbufs)
+				nbuffers = pwc_mbufs;
+			/* Force to use our # of buffers */
+			rb->count = pwc_mbufs;
+			return 0;
+		}
+
+		case VIDIOC_QUERYBUF:
+		{
+			struct v4l2_buffer *buf = arg;
+			int index;
+
+			PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) index=%d\n",buf->index);
+			if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+				PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) Bad type\n");
+				return -EINVAL;
+			}
+			if (buf->memory != V4L2_MEMORY_MMAP) {
+				PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) Bad memory type\n");
+				return -EINVAL;
+			}
+			index = buf->index;
+			if (index < 0 || index >= pwc_mbufs) {
+				PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) Bad index %d\n", buf->index);
+				return -EINVAL;
+			}
+
+			memset(buf, 0, sizeof(struct v4l2_buffer));
+			buf->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+			buf->index = index;
+			buf->m.offset = index * pdev->len_per_image;
+			if (pdev->vpalette == VIDEO_PALETTE_RAW)
+				buf->bytesused = pdev->frame_size + sizeof(struct pwc_raw_frame);
+			else
+				buf->bytesused = pdev->view.size;
+			buf->field = V4L2_FIELD_NONE;
+			buf->memory = V4L2_MEMORY_MMAP;
+			//buf->flags = V4L2_BUF_FLAG_MAPPED;
+			buf->length = pdev->len_per_image;
+
+			PWC_DEBUG_READ("VIDIOC_QUERYBUF: index=%d\n",buf->index);
+			PWC_DEBUG_READ("VIDIOC_QUERYBUF: m.offset=%d\n",buf->m.offset);
+			PWC_DEBUG_READ("VIDIOC_QUERYBUF: bytesused=%d\n",buf->bytesused);
+
+			return 0;
+		}
+
+		case VIDIOC_QBUF:
+		{
+			struct v4l2_buffer *buf = arg;
+
+			PWC_DEBUG_IOCTL("ioctl(VIDIOC_QBUF) index=%d\n",buf->index);
+			if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+				return -EINVAL;
+			if (buf->memory != V4L2_MEMORY_MMAP)
+				return -EINVAL;
+			if (buf->index < 0 || buf->index >= pwc_mbufs)
+				return -EINVAL;
+
+			buf->flags |= V4L2_BUF_FLAG_QUEUED;
+			buf->flags &= ~V4L2_BUF_FLAG_DONE;
+
+			return 0;
+		}
+
+		case VIDIOC_DQBUF:
+		{
+			struct v4l2_buffer *buf = arg;
+			int ret;
+
+			PWC_DEBUG_IOCTL("ioctl(VIDIOC_DQBUF)\n");
+
+			if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+				return -EINVAL;
+
+			/* Add ourselves to the frame wait-queue.
+
+			   FIXME: needs auditing for safety.
+			   QUESTION: In what respect? I think that using the
+				     frameq is safe now.
+			 */
+			add_wait_queue(&pdev->frameq, &wait);
+			while (pdev->full_frames == NULL) {
+				if (pdev->error_status) {
+					remove_wait_queue(&pdev->frameq, &wait);
+					set_current_state(TASK_RUNNING);
+					return -pdev->error_status;
+				}
+
+				if (signal_pending(current)) {
+					remove_wait_queue(&pdev->frameq, &wait);
+					set_current_state(TASK_RUNNING);
+					return -ERESTARTSYS;
+				}
+				schedule();
+				set_current_state(TASK_INTERRUPTIBLE);
+			}
+			remove_wait_queue(&pdev->frameq, &wait);
+			set_current_state(TASK_RUNNING);
+
+			PWC_DEBUG_IOCTL("VIDIOC_DQBUF: frame ready.\n");
+			/* Decompress data in pdev->images[pdev->fill_image] */
+			ret = pwc_handle_frame(pdev);
+			if (ret)
+				return -EFAULT;
+			PWC_DEBUG_IOCTL("VIDIOC_DQBUF: after pwc_handle_frame\n");
+
+			buf->index = pdev->fill_image;
+			if (pdev->vpalette == VIDEO_PALETTE_RAW)
+				buf->bytesused = pdev->frame_size + sizeof(struct pwc_raw_frame);
+			else
+				buf->bytesused = pdev->view.size;
+			buf->flags = V4L2_BUF_FLAG_MAPPED;
+			buf->field = V4L2_FIELD_NONE;
+			do_gettimeofday(&buf->timestamp);
+			buf->sequence = 0;
+			buf->memory = V4L2_MEMORY_MMAP;
+			buf->m.offset = pdev->fill_image * pdev->len_per_image;
+			buf->length = buf->bytesused;
+			pwc_next_image(pdev);
+
+			PWC_DEBUG_IOCTL("VIDIOC_DQBUF: buf->index=%d\n",buf->index);
+			PWC_DEBUG_IOCTL("VIDIOC_DQBUF: buf->length=%d\n",buf->length);
+			PWC_DEBUG_IOCTL("VIDIOC_DQBUF: m.offset=%d\n",buf->m.offset);
+			PWC_DEBUG_IOCTL("VIDIOC_DQBUF: bytesused=%d\n",buf->bytesused);
+			PWC_DEBUG_IOCTL("VIDIOC_DQBUF: leaving\n");
+			return 0;
+
+		}
+
+		case VIDIOC_STREAMON:
+		{
+			/* WARNING: pwc_try_video_mode() called pwc_isoc_init */
+			pwc_isoc_init(pdev);
+			return 0;
+		}
+
+		case VIDIOC_STREAMOFF:
+		{
+			pwc_isoc_cleanup(pdev);
+			return 0;
+		}
+
+		default:
+			return pwc_ioctl(pdev, cmd, arg);
+	} /* ..switch */
+	return 0;
+}
+
+/* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */