Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1630 insertions, 0 deletions

diff --git a/drivers/usb/media/pwc/pwc-ctrl.c b/drivers/usb/media/pwc/pwc-ctrl.c
new file mode 100644
index 00000000000..26aa914bc54
--- /dev/null
+++ b/drivers/usb/media/pwc/pwc-ctrl.c
@@ -0,0 +1,1630 @@
+/* Driver for Philips webcam
+   Functions that send various control messages to the webcam, including
+   video modes.
+   (C) 1999-2003 Nemosoft Unv.
+   (C) 2004      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>.
+
+   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
+*/
+
+/*
+   Changes
+   2001/08/03  Alvarado   Added methods for changing white balance and 
+                          red/green gains
+ */
+
+/* Control functions for the cam; brightness, contrast, video mode, etc. */
+
+#ifdef __KERNEL__
+#include <asm/uaccess.h> 
+#endif
+#include <asm/errno.h>
+#include <linux/version.h>
+ 
+#include "pwc.h"
+#include "pwc-ioctl.h"
+#include "pwc-uncompress.h"
+#include "pwc-kiara.h"
+#include "pwc-timon.h"
+#include "pwc-dec1.h"
+#include "pwc-dec23.h"
+
+/* Request types: video */
+#define SET_LUM_CTL			0x01
+#define GET_LUM_CTL			0x02
+#define SET_CHROM_CTL			0x03
+#define GET_CHROM_CTL			0x04
+#define SET_STATUS_CTL			0x05
+#define GET_STATUS_CTL			0x06
+#define SET_EP_STREAM_CTL		0x07
+#define GET_EP_STREAM_CTL		0x08
+#define SET_MPT_CTL			0x0D
+#define GET_MPT_CTL			0x0E
+
+/* Selectors for the Luminance controls [GS]ET_LUM_CTL */
+#define AGC_MODE_FORMATTER			0x2000
+#define PRESET_AGC_FORMATTER			0x2100
+#define SHUTTER_MODE_FORMATTER			0x2200
+#define PRESET_SHUTTER_FORMATTER		0x2300
+#define PRESET_CONTOUR_FORMATTER		0x2400
+#define AUTO_CONTOUR_FORMATTER			0x2500
+#define BACK_LIGHT_COMPENSATION_FORMATTER	0x2600
+#define CONTRAST_FORMATTER			0x2700
+#define DYNAMIC_NOISE_CONTROL_FORMATTER		0x2800
+#define FLICKERLESS_MODE_FORMATTER		0x2900
+#define AE_CONTROL_SPEED			0x2A00
+#define BRIGHTNESS_FORMATTER			0x2B00
+#define GAMMA_FORMATTER				0x2C00
+
+/* Selectors for the Chrominance controls [GS]ET_CHROM_CTL */
+#define WB_MODE_FORMATTER			0x1000
+#define AWB_CONTROL_SPEED_FORMATTER		0x1100
+#define AWB_CONTROL_DELAY_FORMATTER		0x1200
+#define PRESET_MANUAL_RED_GAIN_FORMATTER	0x1300
+#define PRESET_MANUAL_BLUE_GAIN_FORMATTER	0x1400
+#define COLOUR_MODE_FORMATTER			0x1500
+#define SATURATION_MODE_FORMATTER1		0x1600
+#define SATURATION_MODE_FORMATTER2		0x1700
+
+/* Selectors for the Status controls [GS]ET_STATUS_CTL */
+#define SAVE_USER_DEFAULTS_FORMATTER		0x0200
+#define RESTORE_USER_DEFAULTS_FORMATTER		0x0300
+#define RESTORE_FACTORY_DEFAULTS_FORMATTER	0x0400
+#define READ_AGC_FORMATTER			0x0500
+#define READ_SHUTTER_FORMATTER			0x0600
+#define READ_RED_GAIN_FORMATTER			0x0700
+#define READ_BLUE_GAIN_FORMATTER		0x0800
+#define SENSOR_TYPE_FORMATTER1			0x0C00
+#define READ_RAW_Y_MEAN_FORMATTER		0x3100
+#define SET_POWER_SAVE_MODE_FORMATTER		0x3200
+#define MIRROR_IMAGE_FORMATTER			0x3300
+#define LED_FORMATTER				0x3400
+#define SENSOR_TYPE_FORMATTER2			0x3700
+
+/* Formatters for the Video Endpoint controls [GS]ET_EP_STREAM_CTL */
+#define VIDEO_OUTPUT_CONTROL_FORMATTER		0x0100
+
+/* Formatters for the motorized pan & tilt [GS]ET_MPT_CTL */
+#define PT_RELATIVE_CONTROL_FORMATTER		0x01
+#define PT_RESET_CONTROL_FORMATTER		0x02
+#define PT_STATUS_FORMATTER			0x03
+
+static char *size2name[PSZ_MAX] =
+{
+	"subQCIF",
+	"QSIF",
+	"QCIF",
+	"SIF",
+	"CIF",
+	"VGA",
+};  
+
+/********/
+
+/* Entries for the Nala (645/646) camera; the Nala doesn't have compression 
+   preferences, so you either get compressed or non-compressed streams.
+   
+   An alternate value of 0 means this mode is not available at all.
+ */
+
+struct Nala_table_entry {
+	char alternate;			/* USB alternate setting */
+	int compressed;			/* Compressed yes/no */
+
+	unsigned char mode[3];		/* precomputed mode table */
+};
+
+static struct Nala_table_entry Nala_table[PSZ_MAX][8] =
+{
+#include "pwc-nala.h"
+};
+
+
+/****************************************************************************/
+
+
+#define SendControlMsg(request, value, buflen) \
+	usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0), \
+		request, \
+		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, \
+		value, \
+		pdev->vcinterface, \
+		&buf, buflen, 500)
+
+#define RecvControlMsg(request, value, buflen) \
+	usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0), \
+		request, \
+		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, \
+		value, \
+		pdev->vcinterface, \
+		&buf, buflen, 500)
+
+
+#if PWC_DEBUG
+void pwc_hexdump(void *p, int len)
+{
+	int i;
+	unsigned char *s;
+	char buf[100], *d;
+
+	s = (unsigned char *)p;
+	d = buf;
+	*d = '\0';
+	Debug("Doing hexdump @ %p, %d bytes.\n", p, len);
+	for (i = 0; i < len; i++) {
+		d += sprintf(d, "%02X ", *s++);
+		if ((i & 0xF) == 0xF) {
+			Debug("%s\n", buf);
+			d = buf;
+			*d = '\0';
+		}
+	}
+	if ((i & 0xF) != 0)
+		Debug("%s\n", buf);
+}
+#endif
+
+static inline int send_video_command(struct usb_device *udev, int index, void *buf, int buflen)
+{
+	return usb_control_msg(udev,
+		usb_sndctrlpipe(udev, 0),
+		SET_EP_STREAM_CTL,
+		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		VIDEO_OUTPUT_CONTROL_FORMATTER,
+		index,
+		buf, buflen, 1000);
+}
+
+
+
+static inline int set_video_mode_Nala(struct pwc_device *pdev, int size, int frames)
+{
+	unsigned char buf[3];
+	int ret, fps;
+	struct Nala_table_entry *pEntry;
+	int frames2frames[31] =
+	{ /* closest match of framerate */
+	   0,  0,  0,  0,  4,  /*  0-4  */
+	   5,  5,  7,  7, 10,  /*  5-9  */
+          10, 10, 12, 12, 15,  /* 10-14 */
+          15, 15, 15, 20, 20,  /* 15-19 */
+          20, 20, 20, 24, 24,  /* 20-24 */
+          24, 24, 24, 24, 24,  /* 25-29 */
+          24                   /* 30    */
+	};
+	int frames2table[31] = 
+	{ 0, 0, 0, 0, 0, /*  0-4  */
+	  1, 1, 1, 2, 2, /*  5-9  */
+	  3, 3, 4, 4, 4, /* 10-14 */
+	  5, 5, 5, 5, 5, /* 15-19 */
+	  6, 6, 6, 6, 7, /* 20-24 */
+	  7, 7, 7, 7, 7, /* 25-29 */
+	  7              /* 30    */
+	};
+	
+	if (size < 0 || size > PSZ_CIF || frames < 4 || frames > 25)
+		return -EINVAL;
+	frames = frames2frames[frames];
+	fps = frames2table[frames];
+	pEntry = &Nala_table[size][fps];
+	if (pEntry->alternate == 0)
+		return -EINVAL;
+
+	if (pEntry->compressed)
+		return -ENOENT; /* Not supported. */
+
+	memcpy(buf, pEntry->mode, 3);	
+	ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 3);
+	if (ret < 0) {
+		Debug("Failed to send video command... %d\n", ret);
+		return ret;
+	}
+	if (pEntry->compressed && pdev->vpalette != VIDEO_PALETTE_RAW)
+	 {
+	   switch(pdev->type) {
+	     case 645:
+	     case 646:
+	       pwc_dec1_init(pdev->type, pdev->release, buf, pdev->decompress_data);
+	       break;
+
+	     case 675:
+	     case 680:
+	     case 690:
+	     case 720:
+	     case 730:
+	     case 740:
+	     case 750:
+	       pwc_dec23_init(pdev->type, pdev->release, buf, pdev->decompress_data);
+	       break;
+	   }
+	}
+ 
+	pdev->cmd_len = 3;
+	memcpy(pdev->cmd_buf, buf, 3);
+
+	/* Set various parameters */
+	pdev->vframes = frames;
+	pdev->vsize = size;
+	pdev->valternate = pEntry->alternate;
+	pdev->image = pwc_image_sizes[size];
+	pdev->frame_size = (pdev->image.x * pdev->image.y * 3) / 2;
+	if (pEntry->compressed) {
+		if (pdev->release < 5) { /* 4 fold compression */
+			pdev->vbandlength = 528;
+			pdev->frame_size /= 4;
+		}
+		else {
+			pdev->vbandlength = 704;
+			pdev->frame_size /= 3;
+		}
+	}
+	else
+		pdev->vbandlength = 0;
+	return 0;
+}
+
+
+static inline int set_video_mode_Timon(struct pwc_device *pdev, int size, int frames, int compression, int snapshot)
+{
+	unsigned char buf[13];
+	const struct Timon_table_entry *pChoose;
+	int ret, fps;
+
+	if (size >= PSZ_MAX || frames < 5 || frames > 30 || compression < 0 || compression > 3)
+		return -EINVAL;
+	if (size == PSZ_VGA && frames > 15)
+		return -EINVAL;
+	fps = (frames / 5) - 1;
+
+	/* Find a supported framerate with progressively higher compression ratios
+	   if the preferred ratio is not available.
+	*/
+	pChoose = NULL;
+	while (compression <= 3) {
+	   pChoose = &Timon_table[size][fps][compression];
+	   if (pChoose->alternate != 0)
+	     break;
+	   compression++;
+	}
+	if (pChoose == NULL || pChoose->alternate == 0)
+		return -ENOENT; /* Not supported. */
+
+	memcpy(buf, pChoose->mode, 13);
+	if (snapshot)
+		buf[0] |= 0x80;
+	ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 13);
+	if (ret < 0)
+		return ret;
+
+	if (pChoose->bandlength > 0 && pdev->vpalette != VIDEO_PALETTE_RAW)
+	   pwc_dec23_init(pdev->type, pdev->release, buf, pdev->decompress_data);
+
+	pdev->cmd_len = 13;
+	memcpy(pdev->cmd_buf, buf, 13);
+
+	/* Set various parameters */
+	pdev->vframes = frames;
+	pdev->vsize = size;
+	pdev->vsnapshot = snapshot;
+	pdev->valternate = pChoose->alternate;
+	pdev->image = pwc_image_sizes[size];
+	pdev->vbandlength = pChoose->bandlength;
+	if (pChoose->bandlength > 0)
+		pdev->frame_size = (pChoose->bandlength * pdev->image.y) / 4;
+	else
+		pdev->frame_size = (pdev->image.x * pdev->image.y * 12) / 8;
+	return 0;
+}
+
+
+static inline int set_video_mode_Kiara(struct pwc_device *pdev, int size, int frames, int compression, int snapshot)
+{
+	const struct Kiara_table_entry *pChoose = NULL;
+	int fps, ret;
+	unsigned char buf[12];
+	struct Kiara_table_entry RawEntry = {6, 773, 1272, {0xAD, 0xF4, 0x10, 0x27, 0xB6, 0x24, 0x96, 0x02, 0x30, 0x05, 0x03, 0x80}};
+
+	if (size >= PSZ_MAX || frames < 5 || frames > 30 || compression < 0 || compression > 3)
+		return -EINVAL;
+	if (size == PSZ_VGA && frames > 15)
+		return -EINVAL;
+	fps = (frames / 5) - 1;
+
+	/* special case: VGA @ 5 fps and snapshot is raw bayer mode */
+	if (size == PSZ_VGA && frames == 5 && snapshot)
+	{
+		/* Only available in case the raw palette is selected or 
+		   we have the decompressor available. This mode is 
+		   only available in compressed form 
+		*/
+		if (pdev->vpalette == VIDEO_PALETTE_RAW)
+		{
+	                Info("Choosing VGA/5 BAYER mode (%d).\n", pdev->vpalette);
+			pChoose = &RawEntry;
+		}
+		else
+		{
+			Info("VGA/5 BAYER mode _must_ have a decompressor available, or use RAW palette.\n");
+		}
+	}
+	else
+	{
+        	/* Find a supported framerate with progressively higher compression ratios
+		   if the preferred ratio is not available.
+                   Skip this step when using RAW modes.
+		*/
+		while (compression <= 3) {
+			pChoose = &Kiara_table[size][fps][compression];
+			if (pChoose->alternate != 0)
+				break;
+			compression++;
+		}
+	}
+	if (pChoose == NULL || pChoose->alternate == 0)
+		return -ENOENT; /* Not supported. */
+
+	Debug("Using alternate setting %d.\n", pChoose->alternate);
+	
+	/* usb_control_msg won't take staticly allocated arrays as argument?? */
+	memcpy(buf, pChoose->mode, 12);
+	if (snapshot)
+		buf[0] |= 0x80;
+
+	/* Firmware bug: video endpoint is 5, but commands are sent to endpoint 4 */
+	ret = send_video_command(pdev->udev, 4 /* pdev->vendpoint */, buf, 12);
+	if (ret < 0)
+		return ret;
+
+	if (pChoose->bandlength > 0 && pdev->vpalette != VIDEO_PALETTE_RAW)
+	  pwc_dec23_init(pdev->type, pdev->release, buf, pdev->decompress_data);
+
+	pdev->cmd_len = 12;
+	memcpy(pdev->cmd_buf, buf, 12);
+	/* All set and go */
+	pdev->vframes = frames;
+	pdev->vsize = size;
+	pdev->vsnapshot = snapshot;
+	pdev->valternate = pChoose->alternate;
+	pdev->image = pwc_image_sizes[size];
+	pdev->vbandlength = pChoose->bandlength;
+	if (pdev->vbandlength > 0)
+		pdev->frame_size = (pdev->vbandlength * pdev->image.y) / 4;
+	else
+		pdev->frame_size = (pdev->image.x * pdev->image.y * 12) / 8;
+	return 0;
+}
+
+
+
+/**
+   @pdev: device structure
+   @width: viewport width
+   @height: viewport height
+   @frame: framerate, in fps
+   @compression: preferred compression ratio
+   @snapshot: snapshot mode or streaming
+ */
+int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, int frames, int compression, int snapshot)
+{
+        int ret, size;
+
+        Trace(TRACE_FLOW, "set_video_mode(%dx%d @ %d, palette %d).\n", width, height, frames, pdev->vpalette);
+	size = pwc_decode_size(pdev, width, height);
+	if (size < 0) {
+		Debug("Could not find suitable size.\n");
+		return -ERANGE;
+	}
+	Debug("decode_size = %d.\n", size);
+
+        ret = -EINVAL;
+	switch(pdev->type) {
+	case 645:
+	case 646:
+		ret = set_video_mode_Nala(pdev, size, frames);
+		break;
+
+	case 675:
+	case 680:
+	case 690:
+		ret = set_video_mode_Timon(pdev, size, frames, compression, snapshot);
+		break;
+	
+	case 720:
+	case 730:
+	case 740:
+	case 750:
+		ret = set_video_mode_Kiara(pdev, size, frames, compression, snapshot);
+		break;
+	}
+	if (ret < 0) {
+		if (ret == -ENOENT)
+			Info("Video mode %s@%d fps is only supported with the decompressor module (pwcx).\n", size2name[size], frames);
+		else {
+			Err("Failed to set video mode %s@%d fps; return code = %d\n", size2name[size], frames, ret);
+		}
+		return ret;
+	}
+	pdev->view.x = width;
+	pdev->view.y = height;
+	pdev->frame_total_size = pdev->frame_size + pdev->frame_header_size + pdev->frame_trailer_size;
+	pwc_set_image_buffer_size(pdev);
+	Trace(TRACE_SIZE, "Set viewport to %dx%d, image size is %dx%d.\n", width, height, pwc_image_sizes[size].x, pwc_image_sizes[size].y);
+	return 0;
+}
+
+
+void pwc_set_image_buffer_size(struct pwc_device *pdev)
+{
+	int i, factor = 0, filler = 0;
+
+	/* for PALETTE_YUV420P */
+	switch(pdev->vpalette)
+	{
+	case VIDEO_PALETTE_YUV420P:
+		factor = 6;
+		filler = 128;
+		break;
+	case VIDEO_PALETTE_RAW:
+		factor = 6; /* can be uncompressed YUV420P */
+		filler = 0;
+		break;
+	}
+
+	/* Set sizes in bytes */
+	pdev->image.size = pdev->image.x * pdev->image.y * factor / 4;
+	pdev->view.size  = pdev->view.x  * pdev->view.y  * factor / 4;
+
+	/* Align offset, or you'll get some very weird results in
+	   YUV420 mode... x must be multiple of 4 (to get the Y's in
+	   place), and y even (or you'll mixup U & V). This is less of a
+	   problem for YUV420P.
+	 */
+	pdev->offset.x = ((pdev->view.x - pdev->image.x) / 2) & 0xFFFC;
+	pdev->offset.y = ((pdev->view.y - pdev->image.y) / 2) & 0xFFFE;
+
+	/* Fill buffers with gray or black */
+	for (i = 0; i < MAX_IMAGES; i++) {
+		if (pdev->image_ptr[i] != NULL)
+			memset(pdev->image_ptr[i], filler, pdev->view.size);
+	}
+}
+
+
+
+/* BRIGHTNESS */
+
+int pwc_get_brightness(struct pwc_device *pdev)
+{
+	char buf;
+	int ret;
+
+	ret = RecvControlMsg(GET_LUM_CTL, BRIGHTNESS_FORMATTER, 1);	
+	if (ret < 0)
+		return ret;
+	return buf << 9;
+}
+
+int pwc_set_brightness(struct pwc_device *pdev, int value)
+{
+	char buf;
+
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	buf = (value >> 9) & 0x7f;
+	return SendControlMsg(SET_LUM_CTL, BRIGHTNESS_FORMATTER, 1);
+}
+
+/* CONTRAST */
+
+int pwc_get_contrast(struct pwc_device *pdev)
+{
+	char buf;
+	int ret;
+
+	ret = RecvControlMsg(GET_LUM_CTL, CONTRAST_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	return buf << 10;
+}
+
+int pwc_set_contrast(struct pwc_device *pdev, int value)
+{
+	char buf;
+
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	buf = (value >> 10) & 0x3f;
+	return SendControlMsg(SET_LUM_CTL, CONTRAST_FORMATTER, 1);
+}
+
+/* GAMMA */
+
+int pwc_get_gamma(struct pwc_device *pdev)
+{
+	char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, GAMMA_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	return buf << 11;
+}
+
+int pwc_set_gamma(struct pwc_device *pdev, int value)
+{
+	char buf;
+
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	buf = (value >> 11) & 0x1f;
+	return SendControlMsg(SET_LUM_CTL, GAMMA_FORMATTER, 1);
+}
+
+
+/* SATURATION */
+
+int pwc_get_saturation(struct pwc_device *pdev)
+{
+	char buf;
+	int ret;
+
+	if (pdev->type < 675)
+		return -1;
+	ret = RecvControlMsg(GET_CHROM_CTL, pdev->type < 730 ? SATURATION_MODE_FORMATTER2 : SATURATION_MODE_FORMATTER1, 1);
+	if (ret < 0)
+		return ret;
+	return 32768 + buf * 327;
+}
+
+int pwc_set_saturation(struct pwc_device *pdev, int value)
+{
+	char buf;
+
+	if (pdev->type < 675)
+		return -EINVAL;
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	/* saturation ranges from -100 to +100 */
+	buf = (value - 32768) / 327;
+	return SendControlMsg(SET_CHROM_CTL, pdev->type < 730 ? SATURATION_MODE_FORMATTER2 : SATURATION_MODE_FORMATTER1, 1);
+}
+
+/* AGC */
+
+static inline int pwc_set_agc(struct pwc_device *pdev, int mode, int value)
+{
+	char buf;
+	int ret;
+	
+	if (mode)
+		buf = 0x0; /* auto */
+	else
+		buf = 0xff; /* fixed */
+
+	ret = SendControlMsg(SET_LUM_CTL, AGC_MODE_FORMATTER, 1);
+	
+	if (!mode && ret >= 0) {
+		if (value < 0)
+			value = 0;
+		if (value > 0xffff)
+			value = 0xffff;
+		buf = (value >> 10) & 0x3F;
+		ret = SendControlMsg(SET_LUM_CTL, PRESET_AGC_FORMATTER, 1);
+	}
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+static inline int pwc_get_agc(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, AGC_MODE_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+
+	if (buf != 0) { /* fixed */
+		ret = RecvControlMsg(GET_LUM_CTL, PRESET_AGC_FORMATTER, 1);
+		if (ret < 0)
+			return ret;
+		if (buf > 0x3F)
+			buf = 0x3F;
+		*value = (buf << 10);		
+	}
+	else { /* auto */
+		ret = RecvControlMsg(GET_STATUS_CTL, READ_AGC_FORMATTER, 1);
+		if (ret < 0)
+			return ret;
+		/* Gah... this value ranges from 0x00 ... 0x9F */
+		if (buf > 0x9F)
+			buf = 0x9F;
+		*value = -(48 + buf * 409);
+	}
+
+	return 0;
+}
+
+static inline int pwc_set_shutter_speed(struct pwc_device *pdev, int mode, int value)
+{
+	char buf[2];
+	int speed, ret;
+
+
+	if (mode)
+		buf[0] = 0x0;	/* auto */
+	else
+		buf[0] = 0xff; /* fixed */
+	
+	ret = SendControlMsg(SET_LUM_CTL, SHUTTER_MODE_FORMATTER, 1);
+
+	if (!mode && ret >= 0) {
+		if (value < 0)
+			value = 0;
+		if (value > 0xffff)
+			value = 0xffff;
+		switch(pdev->type) {
+		case 675:
+		case 680:
+		case 690:
+			/* speed ranges from 0x0 to 0x290 (656) */
+			speed = (value / 100);
+			buf[1] = speed >> 8;
+			buf[0] = speed & 0xff;
+			break;
+		case 720:
+		case 730:
+		case 740:
+		case 750:
+			/* speed seems to range from 0x0 to 0xff */
+			buf[1] = 0;
+			buf[0] = value >> 8;
+			break;
+		}
+
+		ret = SendControlMsg(SET_LUM_CTL, PRESET_SHUTTER_FORMATTER, 2);
+	}
+	return ret;
+}	
+
+
+/* POWER */
+
+int pwc_camera_power(struct pwc_device *pdev, int power)
+{
+	char buf;
+
+	if (pdev->type < 675 || (pdev->type < 730 && pdev->release < 6))
+		return 0;	/* Not supported by Nala or Timon < release 6 */
+
+	if (power)
+		buf = 0x00; /* active */
+	else
+		buf = 0xFF; /* power save */
+	return SendControlMsg(SET_STATUS_CTL, SET_POWER_SAVE_MODE_FORMATTER, 1);
+}
+
+
+
+/* private calls */
+
+static inline int pwc_restore_user(struct pwc_device *pdev)
+{
+	char buf; /* dummy */
+	return SendControlMsg(SET_STATUS_CTL, RESTORE_USER_DEFAULTS_FORMATTER, 0);
+}
+
+static inline int pwc_save_user(struct pwc_device *pdev)
+{
+	char buf; /* dummy */
+	return SendControlMsg(SET_STATUS_CTL, SAVE_USER_DEFAULTS_FORMATTER, 0);
+}
+
+static inline int pwc_restore_factory(struct pwc_device *pdev)
+{
+	char buf; /* dummy */
+	return SendControlMsg(SET_STATUS_CTL, RESTORE_FACTORY_DEFAULTS_FORMATTER, 0);
+}
+
+ /* ************************************************* */
+ /* Patch by Alvarado: (not in the original version   */
+
+ /*
+  * the camera recognizes modes from 0 to 4:
+  *
+  * 00: indoor (incandescant lighting)
+  * 01: outdoor (sunlight)
+  * 02: fluorescent lighting
+  * 03: manual
+  * 04: auto
+  */ 
+static inline int pwc_set_awb(struct pwc_device *pdev, int mode)
+{
+	char buf;
+	int ret;
+	
+	if (mode < 0)
+	    mode = 0;
+	
+	if (mode > 4)
+	    mode = 4;
+	
+	buf = mode & 0x07; /* just the lowest three bits */
+	
+	ret = SendControlMsg(SET_CHROM_CTL, WB_MODE_FORMATTER, 1);
+	
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+static inline int pwc_get_awb(struct pwc_device *pdev)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_CHROM_CTL, WB_MODE_FORMATTER, 1);
+
+	if (ret < 0) 
+		return ret;
+	return buf;
+}
+
+static inline int pwc_set_red_gain(struct pwc_device *pdev, int value)
+{
+        unsigned char buf;
+
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	/* only the msb is considered */
+	buf = value >> 8;
+	return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1);
+}
+
+static inline int pwc_get_red_gain(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1);
+	if (ret < 0)
+	    return ret;
+	*value = buf << 8;
+	return 0;
+}
+
+
+static inline int pwc_set_blue_gain(struct pwc_device *pdev, int value)
+{
+	unsigned char buf;
+
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	/* only the msb is considered */
+	buf = value >> 8;
+	return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1);
+}
+
+static inline int pwc_get_blue_gain(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1);
+	if (ret < 0)
+	    return ret;
+	*value = buf << 8;
+	return 0;
+}
+
+
+/* The following two functions are different, since they only read the
+   internal red/blue gains, which may be different from the manual 
+   gains set or read above.
+ */   
+static inline int pwc_read_red_gain(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_STATUS_CTL, READ_RED_GAIN_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*value = buf << 8;
+	return 0;
+}
+
+static inline int pwc_read_blue_gain(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_STATUS_CTL, READ_BLUE_GAIN_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*value = buf << 8;
+	return 0;
+}
+
+
+static inline int pwc_set_wb_speed(struct pwc_device *pdev, int speed)
+{
+	unsigned char buf;
+	
+	/* useful range is 0x01..0x20 */
+	buf = speed / 0x7f0;
+	return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1);
+}
+
+static inline int pwc_get_wb_speed(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*value = buf * 0x7f0;
+	return 0;
+}
+
+
+static inline int pwc_set_wb_delay(struct pwc_device *pdev, int delay)
+{
+	unsigned char buf;
+	
+	/* useful range is 0x01..0x3F */
+	buf = (delay >> 10);
+	return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1);
+}
+
+static inline int pwc_get_wb_delay(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*value = buf << 10;
+	return 0;
+}
+
+
+int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value)
+{
+	unsigned char buf[2];
+
+	if (pdev->type < 730)
+		return 0;
+	on_value /= 100;
+	off_value /= 100;
+	if (on_value < 0)
+		on_value = 0;
+	if (on_value > 0xff)
+		on_value = 0xff;
+	if (off_value < 0)
+		off_value = 0;
+	if (off_value > 0xff)
+		off_value = 0xff;
+
+	buf[0] = on_value;
+	buf[1] = off_value;
+
+	return SendControlMsg(SET_STATUS_CTL, LED_FORMATTER, 2);
+}
+
+int pwc_get_leds(struct pwc_device *pdev, int *on_value, int *off_value)
+{
+	unsigned char buf[2];
+	int ret;
+	
+	if (pdev->type < 730) {
+		*on_value = -1;
+		*off_value = -1;
+		return 0;
+	}
+
+	ret = RecvControlMsg(GET_STATUS_CTL, LED_FORMATTER, 2);
+	if (ret < 0)
+		return ret;
+	*on_value = buf[0] * 100;
+	*off_value = buf[1] * 100;
+	return 0;
+}
+
+static inline int pwc_set_contour(struct pwc_device *pdev, int contour)
+{
+	unsigned char buf;
+	int ret;
+	
+	if (contour < 0)
+		buf = 0xff; /* auto contour on */
+	else
+		buf = 0x0; /* auto contour off */
+	ret = SendControlMsg(SET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	
+	if (contour < 0)
+		return 0;
+	if (contour > 0xffff)
+		contour = 0xffff;
+	
+	buf = (contour >> 10); /* contour preset is [0..3f] */
+	ret = SendControlMsg(SET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1);
+	if (ret < 0)	
+		return ret;	
+	return 0;
+}
+
+static inline int pwc_get_contour(struct pwc_device *pdev, int *contour)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+
+	if (buf == 0) {
+		/* auto mode off, query current preset value */
+		ret = RecvControlMsg(GET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1);
+		if (ret < 0)	
+			return ret;
+		*contour = buf << 10;
+	}
+	else
+		*contour = -1;
+	return 0;
+}
+
+
+static inline int pwc_set_backlight(struct pwc_device *pdev, int backlight)
+{
+	unsigned char buf;
+	
+	if (backlight)
+		buf = 0xff;
+	else
+		buf = 0x0;
+	return SendControlMsg(SET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1);
+}
+
+static inline int pwc_get_backlight(struct pwc_device *pdev, int *backlight)
+{
+	int ret;
+	unsigned char buf;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*backlight = buf;
+	return 0;
+}
+
+
+static inline int pwc_set_flicker(struct pwc_device *pdev, int flicker)
+{
+	unsigned char buf;
+	
+	if (flicker)
+		buf = 0xff;
+	else
+		buf = 0x0;
+	return SendControlMsg(SET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1);
+}
+
+static inline int pwc_get_flicker(struct pwc_device *pdev, int *flicker)
+{
+	int ret;
+	unsigned char buf;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*flicker = buf;
+	return 0;
+}
+
+
+static inline int pwc_set_dynamic_noise(struct pwc_device *pdev, int noise)
+{
+	unsigned char buf;
+
+	if (noise < 0)
+		noise = 0;
+	if (noise > 3)
+		noise = 3;
+	buf = noise;
+	return SendControlMsg(SET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1);
+}
+
+static inline int pwc_get_dynamic_noise(struct pwc_device *pdev, int *noise)
+{
+	int ret;
+	unsigned char buf;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*noise = buf;
+	return 0;
+}
+
+static int pwc_mpt_reset(struct pwc_device *pdev, int flags)
+{
+	unsigned char buf;
+	
+	buf = flags & 0x03; // only lower two bits are currently used
+	return SendControlMsg(SET_MPT_CTL, PT_RESET_CONTROL_FORMATTER, 1);
+}
+
+static inline int pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt)
+{
+	unsigned char buf[4];
+	
+	/* set new relative angle; angles are expressed in degrees * 100,
+	   but cam as .5 degree resolution, hence devide by 200. Also
+	   the angle must be multiplied by 64 before it's send to
+	   the cam (??)
+	 */
+	pan  =  64 * pan  / 100;
+	tilt = -64 * tilt / 100; /* positive tilt is down, which is not what the user would expect */
+	buf[0] = pan & 0xFF;
+	buf[1] = (pan >> 8) & 0xFF;
+	buf[2] = tilt & 0xFF;
+	buf[3] = (tilt >> 8) & 0xFF;
+	return SendControlMsg(SET_MPT_CTL, PT_RELATIVE_CONTROL_FORMATTER, 4);
+}
+
+static inline int pwc_mpt_get_status(struct pwc_device *pdev, struct pwc_mpt_status *status)
+{
+	int ret;
+	unsigned char buf[5];
+	
+	ret = RecvControlMsg(GET_MPT_CTL, PT_STATUS_FORMATTER, 5);
+	if (ret < 0)
+		return ret;
+	status->status = buf[0] & 0x7; // 3 bits are used for reporting
+	status->time_pan = (buf[1] << 8) + buf[2];
+	status->time_tilt = (buf[3] << 8) + buf[4];
+	return 0;
+}
+
+
+int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor)
+{
+	unsigned char buf;
+	int ret = -1, request;
+	
+	if (pdev->type < 675)
+		request = SENSOR_TYPE_FORMATTER1;
+	else if (pdev->type < 730)
+		return -1; /* The Vesta series doesn't have this call */
+	else
+		request = SENSOR_TYPE_FORMATTER2;
+	
+	ret = RecvControlMsg(GET_STATUS_CTL, request, 1);
+	if (ret < 0)
+		return ret;
+	if (pdev->type < 675)
+		*sensor = buf | 0x100;
+	else
+		*sensor = buf;
+	return 0;
+}
+
+
+ /* End of Add-Ons                                    */
+ /* ************************************************* */
+
+/* Linux 2.5.something and 2.6 pass direct pointers to arguments of
+   ioctl() calls. With 2.4, you have to do tedious copy_from_user()
+   and copy_to_user() calls. With these macros we circumvent this,
+   and let me maintain only one source file. The functionality is
+   exactly the same otherwise.
+ */   
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
+
+/* define local variable for arg */
+#define ARG_DEF(ARG_type, ARG_name)\
+	ARG_type *ARG_name = arg;
+/* copy arg to local variable */	
+#define ARG_IN(ARG_name) /* nothing */
+/* argument itself (referenced) */
+#define ARGR(ARG_name) (*ARG_name)
+/* argument address */
+#define ARGA(ARG_name) ARG_name
+/* copy local variable to arg */
+#define ARG_OUT(ARG_name) /* nothing */
+
+#else
+
+#define ARG_DEF(ARG_type, ARG_name)\
+	ARG_type ARG_name;
+#define ARG_IN(ARG_name)\
+	if (copy_from_user(&ARG_name, arg, sizeof(ARG_name))) {\
+		ret = -EFAULT;\
+		break;\
+	}
+#define ARGR(ARG_name) ARG_name
+#define ARGA(ARG_name) &ARG_name
+#define ARG_OUT(ARG_name)\
+	if (copy_to_user(arg, &ARG_name, sizeof(ARG_name))) {\
+		ret = -EFAULT;\
+		break;\
+	}
+
+#endif
+
+int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg)
+{
+	int ret = 0;
+
+	switch(cmd) {
+	case VIDIOCPWCRUSER:
+	{
+		if (pwc_restore_user(pdev))
+			ret = -EINVAL;
+		break;
+	}
+	
+	case VIDIOCPWCSUSER:
+	{
+		if (pwc_save_user(pdev))
+			ret = -EINVAL;
+		break;
+	}
+		
+	case VIDIOCPWCFACTORY:
+	{
+		if (pwc_restore_factory(pdev))
+			ret = -EINVAL;
+		break;
+	}
+	
+	case VIDIOCPWCSCQUAL:
+	{	
+		ARG_DEF(int, qual)
+
+		ARG_IN(qual)
+		if (ARGR(qual) < 0 || ARGR(qual) > 3)
+			ret = -EINVAL;
+		else
+			ret = pwc_try_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, ARGR(qual), pdev->vsnapshot);
+		if (ret >= 0)
+			pdev->vcompression = ARGR(qual);
+		break;
+	}
+	
+	case VIDIOCPWCGCQUAL:
+	{
+		ARG_DEF(int, qual)
+		
+		ARGR(qual) = pdev->vcompression;
+		ARG_OUT(qual)
+		break;
+	}
+	
+	case VIDIOCPWCPROBE:
+	{
+		ARG_DEF(struct pwc_probe, probe)
+		
+		strcpy(ARGR(probe).name, pdev->vdev->name);
+		ARGR(probe).type = pdev->type;
+		ARG_OUT(probe)
+		break;
+	}
+
+	case VIDIOCPWCGSERIAL:
+	{
+		ARG_DEF(struct pwc_serial, serial)
+		
+		strcpy(ARGR(serial).serial, pdev->serial);
+		ARG_OUT(serial)
+		break;
+	}
+
+	case VIDIOCPWCSAGC:
+	{
+		ARG_DEF(int, agc)
+
+		ARG_IN(agc)
+		if (pwc_set_agc(pdev, ARGR(agc) < 0 ? 1 : 0, ARGR(agc)))
+			ret = -EINVAL;
+		break;
+	}
+	
+	case VIDIOCPWCGAGC:
+	{
+		ARG_DEF(int, agc)
+		
+		if (pwc_get_agc(pdev, ARGA(agc)))
+			ret = -EINVAL;
+		ARG_OUT(agc)
+		break;
+	}
+	
+	case VIDIOCPWCSSHUTTER:
+	{
+		ARG_DEF(int, shutter_speed)
+
+		ARG_IN(shutter_speed)
+		ret = pwc_set_shutter_speed(pdev, ARGR(shutter_speed) < 0 ? 1 : 0, ARGR(shutter_speed));
+		break;
+	}
+	
+        case VIDIOCPWCSAWB:
+	{
+		ARG_DEF(struct pwc_whitebalance, wb)
+		
+		ARG_IN(wb)
+		ret = pwc_set_awb(pdev, ARGR(wb).mode);
+		if (ret >= 0 && ARGR(wb).mode == PWC_WB_MANUAL) {
+			pwc_set_red_gain(pdev, ARGR(wb).manual_red);
+			pwc_set_blue_gain(pdev, ARGR(wb).manual_blue);
+		}
+		break;
+	}
+
+	case VIDIOCPWCGAWB:
+	{
+		ARG_DEF(struct pwc_whitebalance, wb)
+
+		memset(ARGA(wb), 0, sizeof(struct pwc_whitebalance));
+		ARGR(wb).mode = pwc_get_awb(pdev);
+		if (ARGR(wb).mode < 0)
+			ret = -EINVAL;
+		else {
+			if (ARGR(wb).mode == PWC_WB_MANUAL) {
+				ret = pwc_get_red_gain(pdev, &ARGR(wb).manual_red);
+				if (ret < 0)
+					break;
+				ret = pwc_get_blue_gain(pdev, &ARGR(wb).manual_blue);
+				if (ret < 0)
+					break;
+			}
+			if (ARGR(wb).mode == PWC_WB_AUTO) {
+				ret = pwc_read_red_gain(pdev, &ARGR(wb).read_red);
+				if (ret < 0)
+					break;
+ 				ret =pwc_read_blue_gain(pdev, &ARGR(wb).read_blue);
+ 				if (ret < 0)
+ 					break;
+			}
+		}
+		ARG_OUT(wb)
+		break;
+	}
+	
+	case VIDIOCPWCSAWBSPEED:
+	{
+		ARG_DEF(struct pwc_wb_speed, wbs)
+		
+		if (ARGR(wbs).control_speed > 0) {
+			ret = pwc_set_wb_speed(pdev, ARGR(wbs).control_speed);
+		}
+		if (ARGR(wbs).control_delay > 0) {
+			ret = pwc_set_wb_delay(pdev, ARGR(wbs).control_delay);
+		}
+		break;
+	}
+	
+	case VIDIOCPWCGAWBSPEED:
+	{
+		ARG_DEF(struct pwc_wb_speed, wbs)
+		
+		ret = pwc_get_wb_speed(pdev, &ARGR(wbs).control_speed);
+		if (ret < 0)
+			break;
+		ret = pwc_get_wb_delay(pdev, &ARGR(wbs).control_delay);
+		if (ret < 0)
+			break;
+		ARG_OUT(wbs)
+		break;
+	}
+
+        case VIDIOCPWCSLED:
+	{
+		ARG_DEF(struct pwc_leds, leds)
+
+		ARG_IN(leds)
+		ret = pwc_set_leds(pdev, ARGR(leds).led_on, ARGR(leds).led_off);
+	    	break;
+	}
+
+
+	case VIDIOCPWCGLED:
+	{
+		ARG_DEF(struct pwc_leds, leds)
+		
+		ret = pwc_get_leds(pdev, &ARGR(leds).led_on, &ARGR(leds).led_off);
+		ARG_OUT(leds)
+		break;
+	}
+
+	case VIDIOCPWCSCONTOUR:
+	{
+		ARG_DEF(int, contour)
+
+		ARG_IN(contour)
+		ret = pwc_set_contour(pdev, ARGR(contour));
+		break;
+	}
+			
+	case VIDIOCPWCGCONTOUR:
+	{
+		ARG_DEF(int, contour)
+		
+		ret = pwc_get_contour(pdev, ARGA(contour));
+		ARG_OUT(contour)
+		break;
+	}
+	
+	case VIDIOCPWCSBACKLIGHT:
+	{
+		ARG_DEF(int, backlight)
+		
+		ARG_IN(backlight)
+		ret = pwc_set_backlight(pdev, ARGR(backlight));
+		break;
+	}
+
+	case VIDIOCPWCGBACKLIGHT:
+	{
+		ARG_DEF(int, backlight)
+		
+		ret = pwc_get_backlight(pdev, ARGA(backlight));
+		ARG_OUT(backlight)
+		break;
+	}
+	
+	case VIDIOCPWCSFLICKER:
+	{
+		ARG_DEF(int, flicker)
+		
+		ARG_IN(flicker)
+		ret = pwc_set_flicker(pdev, ARGR(flicker));
+		break;
+	}
+
+	case VIDIOCPWCGFLICKER:
+	{
+		ARG_DEF(int, flicker)
+		
+		ret = pwc_get_flicker(pdev, ARGA(flicker));
+		ARG_OUT(flicker)
+		break;
+	}
+	
+	case VIDIOCPWCSDYNNOISE:
+	{
+		ARG_DEF(int, dynnoise)
+		
+		ARG_IN(dynnoise)
+		ret = pwc_set_dynamic_noise(pdev, ARGR(dynnoise));
+		break;
+	}
+	
+	case VIDIOCPWCGDYNNOISE:
+	{
+		ARG_DEF(int, dynnoise)
+
+		ret = pwc_get_dynamic_noise(pdev, ARGA(dynnoise));
+		ARG_OUT(dynnoise);
+		break;
+	}
+
+	case VIDIOCPWCGREALSIZE:
+	{
+		ARG_DEF(struct pwc_imagesize, size)
+		
+		ARGR(size).width = pdev->image.x;
+		ARGR(size).height = pdev->image.y;
+		ARG_OUT(size)
+		break;
+ 	}
+ 	
+ 	case VIDIOCPWCMPTRESET:
+ 	{
+ 		if (pdev->features & FEATURE_MOTOR_PANTILT)
+ 		{
+	 		ARG_DEF(int, flags)
+
+ 			ARG_IN(flags)
+			ret = pwc_mpt_reset(pdev, ARGR(flags));
+ 			if (ret >= 0)
+ 			{
+ 				pdev->pan_angle = 0;
+ 				pdev->tilt_angle = 0;
+ 			}
+ 		}
+ 		else
+ 		{
+ 			ret = -ENXIO;
+ 		}
+ 		break;		
+ 	}
+ 	
+ 	case VIDIOCPWCMPTGRANGE:
+ 	{
+ 		if (pdev->features & FEATURE_MOTOR_PANTILT)
+ 		{
+ 			ARG_DEF(struct pwc_mpt_range, range)
+ 			
+ 			ARGR(range) = pdev->angle_range;
+ 			ARG_OUT(range)
+ 		}
+ 		else
+ 		{	
+ 			ret = -ENXIO;
+ 		}
+ 		break;
+ 	}
+ 	
+ 	case VIDIOCPWCMPTSANGLE:
+ 	{
+ 		int new_pan, new_tilt;
+ 		
+ 		if (pdev->features & FEATURE_MOTOR_PANTILT)
+ 		{
+	 		ARG_DEF(struct pwc_mpt_angles, angles)
+
+	 		ARG_IN(angles)
+			/* The camera can only set relative angles, so
+			   do some calculations when getting an absolute angle .
+			 */
+			if (ARGR(angles).absolute)
+			{
+ 				new_pan  = ARGR(angles).pan; 
+ 				new_tilt = ARGR(angles).tilt;
+ 			}
+ 			else
+ 			{
+ 				new_pan  = pdev->pan_angle  + ARGR(angles).pan;
+ 				new_tilt = pdev->tilt_angle + ARGR(angles).tilt;
+			}
+			/* check absolute ranges */
+			if (new_pan  < pdev->angle_range.pan_min  ||
+			    new_pan  > pdev->angle_range.pan_max  ||
+			    new_tilt < pdev->angle_range.tilt_min ||
+			    new_tilt > pdev->angle_range.tilt_max)
+			{
+				ret = -ERANGE;
+			}
+			else
+			{
+				/* go to relative range, check again */
+				new_pan  -= pdev->pan_angle;
+				new_tilt -= pdev->tilt_angle;
+				/* angles are specified in degrees * 100, thus the limit = 36000 */
+				if (new_pan < -36000 || new_pan > 36000 || new_tilt < -36000 || new_tilt > 36000)
+					ret = -ERANGE;
+			}
+			if (ret == 0) /* no errors so far */
+			{
+				ret = pwc_mpt_set_angle(pdev, new_pan, new_tilt);
+				if (ret >= 0)
+				{
+					pdev->pan_angle  += new_pan;
+					pdev->tilt_angle += new_tilt;
+				}
+				if (ret == -EPIPE) /* stall -> out of range */
+					ret = -ERANGE;				
+			}
+ 		}
+ 		else
+ 		{
+ 			ret = -ENXIO;
+ 		}
+ 		break;
+ 	}
+
+ 	case VIDIOCPWCMPTGANGLE:
+ 	{
+ 		
+ 		if (pdev->features & FEATURE_MOTOR_PANTILT)
+ 		{
+	 		ARG_DEF(struct pwc_mpt_angles, angles)
+
+ 			ARGR(angles).absolute = 1;
+ 			ARGR(angles).pan  = pdev->pan_angle;
+ 			ARGR(angles).tilt = pdev->tilt_angle;
+ 			ARG_OUT(angles)
+ 		}
+ 		else
+ 		{
+ 			ret = -ENXIO;
+ 		}
+ 		break;
+ 	}
+ 
+ 	case VIDIOCPWCMPTSTATUS:
+ 	{
+ 		if (pdev->features & FEATURE_MOTOR_PANTILT)
+ 		{
+ 			ARG_DEF(struct pwc_mpt_status, status)
+ 			
+ 			ret = pwc_mpt_get_status(pdev, ARGA(status));
+ 			ARG_OUT(status)
+ 		}
+ 		else
+ 		{
+ 			ret = -ENXIO;
+ 		}
+ 		break;
+	}
+
+	case VIDIOCPWCGVIDCMD:
+	{
+		ARG_DEF(struct pwc_video_command, cmd);
+		
+                ARGR(cmd).type = pdev->type;
+		ARGR(cmd).release = pdev->release;
+		ARGR(cmd).command_len = pdev->cmd_len;
+		memcpy(&ARGR(cmd).command_buf, pdev->cmd_buf, pdev->cmd_len);
+		ARGR(cmd).bandlength = pdev->vbandlength;
+		ARGR(cmd).frame_size = pdev->frame_size;
+		ARG_OUT(cmd)
+		break;
+	}
+       /*
+	case VIDIOCPWCGVIDTABLE:
+	{
+		ARG_DEF(struct pwc_table_init_buffer, table);
+		ARGR(table).len = pdev->cmd_len;
+		memcpy(&ARGR(table).buffer, pdev->decompress_data, pdev->decompressor->table_size);
+		ARG_OUT(table)
+		break;
+	}
+	*/
+
+	default:
+		ret = -ENOIOCTLCMD;
+		break;
+	}
+	
+	if (ret > 0)
+		return 0;
+	return ret;
+}
+
+
+