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linux/drivers/media/video/pwc/pwc-ctrl.c
Hans de Goede 3751e288bc [media] pwc: do not start isoc stream on /dev/video open 
pwc was starting streaming on /dev/video# open rather then on STREAM_ON. Now
that the v4l1 compat code is removed from the pwc driver there is no reason
left to do this. So this patch changes the pwc driver to delay starting
the isoc stream (and thus using valuable usb bandwidth) until the application
does a STREAM_ON

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-12-29 08:16:52 -02:00

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/* Driver for Philips webcam
Functions that send various control messages to the webcam, including
video modes.
(C) 1999-2003 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>.
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 "pwc.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 GET_XX_CTL 0x09
#define SET_XX_CTL 0x0A
#define GET_XY_CTL 0x0B
#define SET_XY_CTL 0x0C
#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 GET_STATUS_B00 0x0B00
#define SENSOR_TYPE_FORMATTER1 0x0C00
#define GET_STATUS_3000 0x3000
#define READ_RAW_Y_MEAN_FORMATTER 0x3100
#define SET_POWER_SAVE_MODE_FORMATTER 0x3200
#define MIRROR_IMAGE_FORMATTER 0x3300
#define LED_FORMATTER 0x3400
#define LOWLIGHT 0x3500
#define GET_STATUS_3600 0x3600
#define SENSOR_TYPE_FORMATTER2 0x3700
#define GET_STATUS_3800 0x3800
#define GET_STATUS_4000 0x4000
#define GET_STATUS_4100 0x4100 /* Get */
#define CTL_STATUS_4200 0x4200 /* [GS] 1 */
/* 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 const 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.
*/
#define PWC_FPS_MAX_NALA 8
struct Nala_table_entry {
char alternate; /* USB alternate setting */
int compressed; /* Compressed yes/no */
unsigned char mode[3]; /* precomputed mode table */
};
static unsigned int Nala_fps_vector[PWC_FPS_MAX_NALA] = { 4, 5, 7, 10, 12, 15, 20, 24 };
static struct Nala_table_entry Nala_table[PSZ_MAX][PWC_FPS_MAX_NALA] =
{
#include "pwc-nala.h"
};
static void pwc_set_image_buffer_size(struct pwc_device *pdev);
/****************************************************************************/
static int _send_control_msg(struct pwc_device *pdev,
u8 request, u16 value, int index, void *buf, int buflen, int timeout)
{
int rc;
void *kbuf = NULL;
if (buflen) {
kbuf = kmalloc(buflen, GFP_KERNEL); /* not allowed on stack */
if (kbuf == NULL)
return -ENOMEM;
memcpy(kbuf, buf, buflen);
}
rc = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
request,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
index,
kbuf, buflen, timeout);
kfree(kbuf);
return rc;
}
static int recv_control_msg(struct pwc_device *pdev,
u8 request, u16 value, void *buf, int buflen)
{
int rc;
void *kbuf = kmalloc(buflen, GFP_KERNEL); /* not allowed on stack */
if (kbuf == NULL)
return -ENOMEM;
rc = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
request,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
pdev->vcinterface,
kbuf, buflen, 500);
memcpy(buf, kbuf, buflen);
kfree(kbuf);
return rc;
}
static inline int send_video_command(struct pwc_device *pdev,
int index, void *buf, int buflen)
{
return _send_control_msg(pdev,
SET_EP_STREAM_CTL,
VIDEO_OUTPUT_CONTROL_FORMATTER,
index,
buf, buflen, 1000);
}
static inline int send_control_msg(struct pwc_device *pdev,
u8 request, u16 value, void *buf, int buflen)
{
return _send_control_msg(pdev,
request, value, pdev->vcinterface, buf, buflen, 500);
}
static 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;
memcpy(buf, pEntry->mode, 3);
ret = send_video_command(pdev, pdev->vendpoint, buf, 3);
if (ret < 0) {
PWC_DEBUG_MODULE("Failed to send video command... %d\n", ret);
return ret;
}
if (pEntry->compressed && pdev->pixfmt == V4L2_PIX_FMT_YUV420)
pwc_dec1_init(pdev->type, pdev->release, buf, pdev->decompress_data);
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 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, pdev->vendpoint, buf, 13);
if (ret < 0)
return ret;
if (pChoose->bandlength > 0 && pdev->pixfmt == V4L2_PIX_FMT_YUV420)
pwc_dec23_init(pdev, pdev->type, buf);
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 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 && pdev->pixfmt != V4L2_PIX_FMT_YUV420)
{
/* Only available in case the raw palette is selected or
we have the decompressor available. This mode is
only available in compressed form
*/
PWC_DEBUG_SIZE("Choosing VGA/5 BAYER mode.\n");
pChoose = &RawEntry;
}
else
{
/* Find a supported framerate with progressively higher compression ratios
if the preferred ratio is not available.
Skip this step when using RAW modes.
*/
snapshot = 0;
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. */
PWC_TRACE("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, 4 /* pdev->vendpoint */, buf, 12);
if (ret < 0)
return ret;
if (pChoose->bandlength > 0 && pdev->pixfmt == V4L2_PIX_FMT_YUV420)
pwc_dec23_init(pdev, pdev->type, buf);
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;
PWC_TRACE("frame_size=%d, vframes=%d, vsize=%d, vsnapshot=%d, vbandlength=%d\n",
pdev->frame_size,pdev->vframes,pdev->vsize,pdev->vsnapshot,pdev->vbandlength);
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;
PWC_DEBUG_FLOW("set_video_mode(%dx%d @ %d, pixfmt %08x).\n", width, height, frames, pdev->pixfmt);
size = pwc_decode_size(pdev, width, height);
if (size < 0) {
PWC_DEBUG_MODULE("Could not find suitable size.\n");
return -ERANGE;
}
PWC_TRACE("decode_size = %d.\n", size);
if (DEVICE_USE_CODEC1(pdev->type)) {
ret = set_video_mode_Nala(pdev, size, frames);
} else if (DEVICE_USE_CODEC3(pdev->type)) {
ret = set_video_mode_Kiara(pdev, size, frames, compression, snapshot);
} else {
ret = set_video_mode_Timon(pdev, size, frames, compression, snapshot);
}
if (ret < 0) {
PWC_ERROR("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);
PWC_DEBUG_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;
}
static unsigned int pwc_get_fps_Nala(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
unsigned int i;
for (i = 0; i < PWC_FPS_MAX_NALA; i++) {
if (Nala_table[size][i].alternate) {
if (index--==0) return Nala_fps_vector[i];
}
}
return 0;
}
static unsigned int pwc_get_fps_Kiara(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
unsigned int i;
for (i = 0; i < PWC_FPS_MAX_KIARA; i++) {
if (Kiara_table[size][i][3].alternate) {
if (index--==0) return Kiara_fps_vector[i];
}
}
return 0;
}
static unsigned int pwc_get_fps_Timon(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
unsigned int i;
for (i=0; i < PWC_FPS_MAX_TIMON; i++) {
if (Timon_table[size][i][3].alternate) {
if (index--==0) return Timon_fps_vector[i];
}
}
return 0;
}
unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size)
{
unsigned int ret;
if (DEVICE_USE_CODEC1(pdev->type)) {
ret = pwc_get_fps_Nala(pdev, index, size);
} else if (DEVICE_USE_CODEC3(pdev->type)) {
ret = pwc_get_fps_Kiara(pdev, index, size);
} else {
ret = pwc_get_fps_Timon(pdev, index, size);
}
return ret;
}
#define BLACK_Y 0
#define BLACK_U 128
#define BLACK_V 128
static void pwc_set_image_buffer_size(struct pwc_device *pdev)
{
int i, factor = 0;
/* for V4L2_PIX_FMT_YUV420 */
switch (pdev->pixfmt) {
case V4L2_PIX_FMT_YUV420:
factor = 6;
break;
case V4L2_PIX_FMT_PWC1:
case V4L2_PIX_FMT_PWC2:
factor = 6; /* can be uncompressed YUV420P */
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 black colors */
for (i = 0; i < pwc_mbufs; i++) {
unsigned char *p = pdev->image_data + pdev->images[i].offset;
memset(p, BLACK_Y, pdev->view.x * pdev->view.y);
p += pdev->view.x * pdev->view.y;
memset(p, BLACK_U, pdev->view.x * pdev->view.y/4);
p += pdev->view.x * pdev->view.y/4;
memset(p, BLACK_V, pdev->view.x * pdev->view.y/4);
}
}
/* BRIGHTNESS */
int pwc_get_brightness(struct pwc_device *pdev)
{
char buf;
int ret;
ret = recv_control_msg(pdev,
GET_LUM_CTL, BRIGHTNESS_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
return buf;
}
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 send_control_msg(pdev,
SET_LUM_CTL, BRIGHTNESS_FORMATTER, &buf, sizeof(buf));
}
/* CONTRAST */
int pwc_get_contrast(struct pwc_device *pdev)
{
char buf;
int ret;
ret = recv_control_msg(pdev,
GET_LUM_CTL, CONTRAST_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
return buf;
}
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 send_control_msg(pdev,
SET_LUM_CTL, CONTRAST_FORMATTER, &buf, sizeof(buf));
}
/* GAMMA */
int pwc_get_gamma(struct pwc_device *pdev)
{
char buf;
int ret;
ret = recv_control_msg(pdev,
GET_LUM_CTL, GAMMA_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
return buf;
}
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 send_control_msg(pdev,
SET_LUM_CTL, GAMMA_FORMATTER, &buf, sizeof(buf));
}
/* SATURATION */
/* return a value between [-100 , 100] */
int pwc_get_saturation(struct pwc_device *pdev, int *value)
{
char buf;
int ret, saturation_register;
if (pdev->type < 675)
return -EINVAL;
if (pdev->type < 730)
saturation_register = SATURATION_MODE_FORMATTER2;
else
saturation_register = SATURATION_MODE_FORMATTER1;
ret = recv_control_msg(pdev,
GET_CHROM_CTL, saturation_register, &buf, sizeof(buf));
if (ret < 0)
return ret;
*value = (signed)buf;
return 0;
}
/* @param value saturation color between [-100 , 100] */
int pwc_set_saturation(struct pwc_device *pdev, int value)
{
char buf;
int saturation_register;
if (pdev->type < 675)
return -EINVAL;
if (value < -100)
value = -100;
if (value > 100)
value = 100;
if (pdev->type < 730)
saturation_register = SATURATION_MODE_FORMATTER2;
else
saturation_register = SATURATION_MODE_FORMATTER1;
return send_control_msg(pdev,
SET_CHROM_CTL, saturation_register, &buf, sizeof(buf));
}
/* AGC */
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 = send_control_msg(pdev,
SET_LUM_CTL, AGC_MODE_FORMATTER, &buf, sizeof(buf));
if (!mode && ret >= 0) {
if (value < 0)
value = 0;
if (value > 0xffff)
value = 0xffff;
buf = (value >> 10) & 0x3F;
ret = send_control_msg(pdev,
SET_LUM_CTL, PRESET_AGC_FORMATTER, &buf, sizeof(buf));
}
if (ret < 0)
return ret;
return 0;
}
int pwc_get_agc(struct pwc_device *pdev, int *value)
{
unsigned char buf;
int ret;
ret = recv_control_msg(pdev,
GET_LUM_CTL, AGC_MODE_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
if (buf != 0) { /* fixed */
ret = recv_control_msg(pdev,
GET_LUM_CTL, PRESET_AGC_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
if (buf > 0x3F)
buf = 0x3F;
*value = (buf << 10);
}
else { /* auto */
ret = recv_control_msg(pdev,
GET_STATUS_CTL, READ_AGC_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
/* Gah... this value ranges from 0x00 ... 0x9F */
if (buf > 0x9F)
buf = 0x9F;
*value = -(48 + buf * 409);
}
return 0;
}
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 = send_control_msg(pdev,
SET_LUM_CTL, SHUTTER_MODE_FORMATTER, &buf, 1);
if (!mode && ret >= 0) {
if (value < 0)
value = 0;
if (value > 0xffff)
value = 0xffff;
if (DEVICE_USE_CODEC2(pdev->type)) {
/* speed ranges from 0x0 to 0x290 (656) */
speed = (value / 100);
buf[1] = speed >> 8;
buf[0] = speed & 0xff;
} else if (DEVICE_USE_CODEC3(pdev->type)) {
/* speed seems to range from 0x0 to 0xff */
buf[1] = 0;
buf[0] = value >> 8;
}
ret = send_control_msg(pdev,
SET_LUM_CTL, PRESET_SHUTTER_FORMATTER,
&buf, sizeof(buf));
}
return ret;
}
/* This function is not exported to v4l1, so output values between 0 -> 256 */
int pwc_get_shutter_speed(struct pwc_device *pdev, int *value)
{
unsigned char buf[2];
int ret;
ret = recv_control_msg(pdev,
GET_STATUS_CTL, READ_SHUTTER_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
*value = buf[0] + (buf[1] << 8);
if (DEVICE_USE_CODEC2(pdev->type)) {
/* speed ranges from 0x0 to 0x290 (656) */
*value *= 256/656;
} else if (DEVICE_USE_CODEC3(pdev->type)) {
/* speed seems to range from 0x0 to 0xff */
}
return 0;
}
/* 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 send_control_msg(pdev,
SET_STATUS_CTL, SET_POWER_SAVE_MODE_FORMATTER,
&buf, sizeof(buf));
}
/* private calls */
int pwc_restore_user(struct pwc_device *pdev)
{
return send_control_msg(pdev,
SET_STATUS_CTL, RESTORE_USER_DEFAULTS_FORMATTER, NULL, 0);
}
int pwc_save_user(struct pwc_device *pdev)
{
return send_control_msg(pdev,
SET_STATUS_CTL, SAVE_USER_DEFAULTS_FORMATTER, NULL, 0);
}
int pwc_restore_factory(struct pwc_device *pdev)
{
return send_control_msg(pdev,
SET_STATUS_CTL, RESTORE_FACTORY_DEFAULTS_FORMATTER, NULL, 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
*/
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 = send_control_msg(pdev,
SET_CHROM_CTL, WB_MODE_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
return 0;
}
int pwc_get_awb(struct pwc_device *pdev)
{
unsigned char buf;
int ret;
ret = recv_control_msg(pdev,
GET_CHROM_CTL, WB_MODE_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
return buf;
}
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 send_control_msg(pdev,
SET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER,
&buf, sizeof(buf));
}
int pwc_get_red_gain(struct pwc_device *pdev, int *value)
{
unsigned char buf;
int ret;
ret = recv_control_msg(pdev,
GET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER,
&buf, sizeof(buf));
if (ret < 0)
return ret;
*value = buf << 8;
return 0;
}
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 send_control_msg(pdev,
SET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER,
&buf, sizeof(buf));
}
int pwc_get_blue_gain(struct pwc_device *pdev, int *value)
{
unsigned char buf;
int ret;
ret = recv_control_msg(pdev,
GET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER,
&buf, sizeof(buf));
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 int pwc_read_red_gain(struct pwc_device *pdev, int *value)
{
unsigned char buf;
int ret;
ret = recv_control_msg(pdev,
GET_STATUS_CTL, READ_RED_GAIN_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
*value = buf << 8;
return 0;
}
static int pwc_read_blue_gain(struct pwc_device *pdev, int *value)
{
unsigned char buf;
int ret;
ret = recv_control_msg(pdev,
GET_STATUS_CTL, READ_BLUE_GAIN_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
*value = buf << 8;
return 0;
}
static int pwc_set_wb_speed(struct pwc_device *pdev, int speed)
{
unsigned char buf;
/* useful range is 0x01..0x20 */
buf = speed / 0x7f0;
return send_control_msg(pdev,
SET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, &buf, sizeof(buf));
}
static int pwc_get_wb_speed(struct pwc_device *pdev, int *value)
{
unsigned char buf;
int ret;
ret = recv_control_msg(pdev,
GET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
*value = buf * 0x7f0;
return 0;
}
static int pwc_set_wb_delay(struct pwc_device *pdev, int delay)
{
unsigned char buf;
/* useful range is 0x01..0x3F */
buf = (delay >> 10);
return send_control_msg(pdev,
SET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, &buf, sizeof(buf));
}
static int pwc_get_wb_delay(struct pwc_device *pdev, int *value)
{
unsigned char buf;
int ret;
ret = recv_control_msg(pdev,
GET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, &buf, sizeof(buf));
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 send_control_msg(pdev,
SET_STATUS_CTL, LED_FORMATTER, &buf, sizeof(buf));
}
static 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 = recv_control_msg(pdev,
GET_STATUS_CTL, LED_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
*on_value = buf[0] * 100;
*off_value = buf[1] * 100;
return 0;
}
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 = send_control_msg(pdev,
SET_LUM_CTL, AUTO_CONTOUR_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
if (contour < 0)
return 0;
if (contour > 0xffff)
contour = 0xffff;
buf = (contour >> 10); /* contour preset is [0..3f] */
ret = send_control_msg(pdev,
SET_LUM_CTL, PRESET_CONTOUR_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
return 0;
}
int pwc_get_contour(struct pwc_device *pdev, int *contour)
{
unsigned char buf;
int ret;
ret = recv_control_msg(pdev,
GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
if (buf == 0) {
/* auto mode off, query current preset value */
ret = recv_control_msg(pdev,
GET_LUM_CTL, PRESET_CONTOUR_FORMATTER,
&buf, sizeof(buf));
if (ret < 0)
return ret;
*contour = buf << 10;
}
else
*contour = -1;
return 0;
}
int pwc_set_backlight(struct pwc_device *pdev, int backlight)
{
unsigned char buf;
if (backlight)
buf = 0xff;
else
buf = 0x0;
return send_control_msg(pdev,
SET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER,
&buf, sizeof(buf));
}
int pwc_get_backlight(struct pwc_device *pdev, int *backlight)
{
int ret;
unsigned char buf;
ret = recv_control_msg(pdev,
GET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER,
&buf, sizeof(buf));
if (ret < 0)
return ret;
*backlight = !!buf;
return 0;
}
int pwc_set_colour_mode(struct pwc_device *pdev, int colour)
{
unsigned char buf;
if (colour)
buf = 0xff;
else
buf = 0x0;
return send_control_msg(pdev,
SET_CHROM_CTL, COLOUR_MODE_FORMATTER, &buf, sizeof(buf));
}
int pwc_get_colour_mode(struct pwc_device *pdev, int *colour)
{
int ret;
unsigned char buf;
ret = recv_control_msg(pdev,
GET_CHROM_CTL, COLOUR_MODE_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
*colour = !!buf;
return 0;
}
int pwc_set_flicker(struct pwc_device *pdev, int flicker)
{
unsigned char buf;
if (flicker)
buf = 0xff;
else
buf = 0x0;
return send_control_msg(pdev,
SET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, &buf, sizeof(buf));
}
int pwc_get_flicker(struct pwc_device *pdev, int *flicker)
{
int ret;
unsigned char buf;
ret = recv_control_msg(pdev,
GET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, &buf, sizeof(buf));
if (ret < 0)
return ret;
*flicker = !!buf;
return 0;
}
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 send_control_msg(pdev,
SET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER,
&buf, sizeof(buf));
}
int pwc_get_dynamic_noise(struct pwc_device *pdev, int *noise)
{
int ret;
unsigned char buf;
ret = recv_control_msg(pdev,
GET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER,
&buf, sizeof(buf));
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 send_control_msg(pdev,
SET_MPT_CTL, PT_RESET_CONTROL_FORMATTER, &buf, sizeof(buf));
}
int pwc_mpt_reset(struct pwc_device *pdev, int flags)
{
int ret;
ret = _pwc_mpt_reset(pdev, flags);
if (ret >= 0) {
pdev->pan_angle = 0;
pdev->tilt_angle = 0;
}
return ret;
}
static 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 divide 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 send_control_msg(pdev,
SET_MPT_CTL, PT_RELATIVE_CONTROL_FORMATTER, &buf, sizeof(buf));
}
int pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt)
{
int ret;
/* check absolute ranges */
if (pan < pdev->angle_range.pan_min ||
pan > pdev->angle_range.pan_max ||
tilt < pdev->angle_range.tilt_min ||
tilt > pdev->angle_range.tilt_max)
return -ERANGE;
/* go to relative range, check again */
pan -= pdev->pan_angle;
tilt -= pdev->tilt_angle;
/* angles are specified in degrees * 100, thus the limit = 36000 */
if (pan < -36000 || pan > 36000 || tilt < -36000 || tilt > 36000)
return -ERANGE;
ret = _pwc_mpt_set_angle(pdev, pan, tilt);
if (ret >= 0) {
pdev->pan_angle += pan;
pdev->tilt_angle += tilt;
}
if (ret == -EPIPE) /* stall -> out of range */
ret = -ERANGE;
return ret;
}
static int pwc_mpt_get_status(struct pwc_device *pdev, struct pwc_mpt_status *status)
{
int ret;
unsigned char buf[5];
ret = recv_control_msg(pdev,
GET_MPT_CTL, PT_STATUS_FORMATTER, &buf, sizeof(buf));
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 = recv_control_msg(pdev,
GET_STATUS_CTL, request, &buf, sizeof(buf));
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.
*/
/* 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 */
long pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg)
{
long 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)
if (pdev->iso_init) {
ret = -EBUSY;
break;
}
ARG_IN(qual)
if (ARGR(qual) < 0 || ARGR(qual) > 3)
ret = -EINVAL;
else
ret = pwc_set_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));
}
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;
}
ret = pwc_mpt_set_angle(pdev, new_pan, new_tilt);
}
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, vcmd);
ARGR(vcmd).type = pdev->type;
ARGR(vcmd).release = pdev->release;
ARGR(vcmd).command_len = pdev->cmd_len;
memcpy(&ARGR(vcmd).command_buf, pdev->cmd_buf, pdev->cmd_len);
ARGR(vcmd).bandlength = pdev->vbandlength;
ARGR(vcmd).frame_size = pdev->frame_size;
ARG_OUT(vcmd)
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;
}
/* vim: set cinoptions= formatoptions=croql cindent shiftwidth=8 tabstop=8: */
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