pwc-ctrl.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:36k
- /* Driver for Philips webcam
- Functions that send various control messages to the webcam, including
- video modes.
- (C) 1999-2002 Nemosoft Unv. (webcam@smcc.demon.nl)
- 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-ioctl.h"
- #include "pwc-uncompress.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
- /* 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
- 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"
- };
- /* This tables contains entries for the 675/680/690 (Timon) camera, with
- 4 different qualities (no compression, low, medium, high).
- It lists the bandwidth requirements for said mode by its alternate interface
- number. An alternate of 0 means that the mode is unavailable.
-
- There are 6 * 4 * 4 entries:
- 6 different resolutions subqcif, qsif, qcif, sif, cif, vga
- 6 framerates: 5, 10, 15, 20, 25, 30
- 4 compression modi: none, low, medium, high
-
- When an uncompressed mode is not available, the next available compressed mode
- will be choosen (unless the decompressor is absent). Sometimes there are only
- 1 or 2 compressed modes available; in that case entries are duplicated.
- */
- struct Timon_table_entry
- {
- char alternate; /* USB alternate interface */
- unsigned short packetsize; /* Normal packet size */
- unsigned short bandlength; /* Bandlength when decompressing */
- unsigned char mode[13]; /* precomputed mode settings for cam */
- };
- static struct Timon_table_entry Timon_table[PSZ_MAX][6][4] =
- {
- #include "pwc_timon.h"
- };
- /* Entries for the Kiara (730/740/750) camera */
- struct Kiara_table_entry
- {
- char alternate; /* USB alternate interface */
- unsigned short packetsize; /* Normal packet size */
- unsigned short bandlength; /* Bandlength when decompressing */
- unsigned char mode[12]; /* precomputed mode settings for cam */
- };
- static struct Kiara_table_entry Kiara_table[PSZ_MAX][6][4] =
- {
- #include "pwc_kiara.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, HZ / 2)
- #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, HZ / 2)
- #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 = ' ';
- 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("%sn", buf);
- d = buf;
- *d = ' ';
- }
- }
- if ((i & 0xF) != 0)
- Debug("%sn", 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, HZ);
- }
- 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 && pdev->decompressor == NULL)
- return -ENOENT; /* Not supported. */
- memcpy(buf, pEntry->mode, 3);
- ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 3);
- if (ret < 0)
- return ret;
- if (pEntry->compressed && pdev->decompressor != NULL)
- pdev->decompressor->init(pdev->release, buf, pdev->decompress_data);
-
- /* 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];
- 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;
- if (pdev->decompressor == NULL) {
- #if PWC_DEBUG
- Debug("Trying to find uncompressed mode.n");
- #endif
- pChoose = &Timon_table[size][fps][0];
- }
- else {
- 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->decompressor->init(pdev->release, buf, pdev->decompress_data);
-
- /* 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)
- {
- struct Kiara_table_entry *pChoose;
- int fps, ret;
- unsigned char buf[12];
-
- 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;
- if (pdev->decompressor == NULL) {
- #if PWC_DEBUG
- Debug("Trying to find uncompressed mode.n");
- #endif
- pChoose = &Kiara_table[size][fps][0];
- }
- else {
- 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. */
- /* 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->decompressor->init(pdev->release, buf, pdev->decompress_data);
-
- /* 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 (pChoose->bandlength > 0)
- pdev->frame_size = (pChoose->bandlength * pdev->image.y) / 4;
- else
- pdev->frame_size = (pdev->image.x * pdev->image.y * 12) / 8;
- pdev->frame_size += (pdev->frame_header_size + pdev->frame_trailer_size);
- 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;
-
- size = pwc_decode_size(pdev, width, height);
- if (size < 0) {
- Debug("Could not find suitable size.n");
- return -ERANGE;
- }
- 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 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 = %dn", size2name[size], frames, ret);
- return ret;
- }
- }
- pdev->view.x = width;
- pdev->view.y = height;
- pwc_set_image_buffer_size(pdev);
- Trace(TRACE_SIZE, "Set viewport to %dx%d, image size is %dx%d, palette = %d.n", width, height, pwc_image_sizes[size].x, pwc_image_sizes[size].y, pdev->vpalette);
- return 0;
- }
- void pwc_set_image_buffer_size(struct pwc_device *pdev)
- {
- int factor, i, filler = 0;
- switch(pdev->vpalette) {
- case VIDEO_PALETTE_RGB32 | 0x80:
- case VIDEO_PALETTE_RGB32:
- factor = 16;
- filler = 0;
- break;
- case VIDEO_PALETTE_RGB24 | 0x80:
- case VIDEO_PALETTE_RGB24:
- factor = 12;
- filler = 0;
- break;
- case VIDEO_PALETTE_YUYV:
- case VIDEO_PALETTE_YUV422:
- factor = 8;
- filler = 128;
- break;
- case VIDEO_PALETTE_YUV420:
- case VIDEO_PALETTE_YUV420P:
- factor = 6;
- filler = 128;
- break;
- #if PWC_DEBUG
- case VIDEO_PALETTE_RAW:
- pdev->image.size = pdev->frame_size;
- pdev->view.size = pdev->frame_size;
- return;
- break;
- #endif
- default:
- factor = 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 = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_LUM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- BRIGHTNESS_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- 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 usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_LUM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- BRIGHTNESS_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- }
- /* CONTRAST */
- int pwc_get_contrast(struct pwc_device *pdev)
- {
- char buf;
- int ret;
-
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_LUM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- CONTRAST_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- 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 usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_LUM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- CONTRAST_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- }
- /* GAMMA */
- int pwc_get_gamma(struct pwc_device *pdev)
- {
- char buf;
- int ret;
-
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_LUM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- GAMMA_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- 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 usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_LUM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- GAMMA_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- }
- /* SATURATION */
- int pwc_get_saturation(struct pwc_device *pdev)
- {
- char buf;
- int ret;
- if (pdev->type < 675)
- return -1;
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_CHROM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- pdev->type < 730 ? SATURATION_MODE_FORMATTER2 : SATURATION_MODE_FORMATTER1,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- 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 usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_CHROM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- pdev->type < 730 ? SATURATION_MODE_FORMATTER2 : SATURATION_MODE_FORMATTER1,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- }
- /* 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 = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_LUM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- AGC_MODE_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
-
- if (!mode && ret >= 0) {
- if (value < 0)
- value = 0;
- if (value > 0xffff)
- value = 0xffff;
- buf = (value >> 10) & 0x3F;
- ret = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_LUM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- PRESET_AGC_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- }
- 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 = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_LUM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- AGC_MODE_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
- if (buf != 0) { /* fixed */
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_LUM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- PRESET_AGC_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
- if (buf > 0x3F)
- buf = 0x3F;
- *value = (buf << 10);
- }
- else { /* auto */
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_STATUS_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- READ_AGC_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- 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 = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_LUM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- SHUTTER_MODE_FORMATTER,
- pdev->vcinterface,
- buf, 1, HZ / 2);
- 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 730:
- case 740:
- case 750:
- /* speed seems to range from 0x0 to 0xff */
- buf[1] = 0;
- buf[0] = value >> 8;
- break;
- }
- ret = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_LUM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- PRESET_SHUTTER_FORMATTER,
- pdev->vcinterface,
- &buf, 2, HZ / 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 usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_STATUS_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- SET_POWER_SAVE_MODE_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- }
- /* private calls */
- static inline int pwc_restore_user(struct pwc_device *pdev)
- {
- return usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_STATUS_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- RESTORE_USER_DEFAULTS_FORMATTER,
- pdev->vcinterface,
- NULL, 0, HZ / 2);
- }
- static inline int pwc_save_user(struct pwc_device *pdev)
- {
- return usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_STATUS_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- SAVE_USER_DEFAULTS_FORMATTER,
- pdev->vcinterface,
- NULL, 0, HZ / 2);
- }
- static inline int pwc_restore_factory(struct pwc_device *pdev)
- {
- return usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_STATUS_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- RESTORE_FACTORY_DEFAULTS_FORMATTER,
- pdev->vcinterface,
- NULL, 0, HZ / 2);
- }
- /* ************************************************* */
- /* 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 = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_CHROM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- WB_MODE_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
-
- if (ret < 0)
- return ret;
- return 0;
- }
- static inline int pwc_get_awb(struct pwc_device *pdev)
- {
- unsigned char buf;
- int ret;
-
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_CHROM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- WB_MODE_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- 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 are considered */
- buf = value >> 8;
- return usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_CHROM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- PRESET_MANUAL_RED_GAIN_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- }
- static inline int pwc_get_red_gain(struct pwc_device *pdev)
- {
- unsigned char buf;
- int ret;
-
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_CHROM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- PRESET_MANUAL_RED_GAIN_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
-
- return (buf << 8);
- }
- 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;
- /* linear mapping of 0..0xffff to -0x80..0x7f */
- buf = (value >> 8);
- return usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_CHROM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- PRESET_MANUAL_BLUE_GAIN_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- }
- static inline int pwc_get_blue_gain(struct pwc_device *pdev)
- {
- unsigned char buf;
- int ret;
-
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_CHROM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- PRESET_MANUAL_BLUE_GAIN_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
-
- return (buf << 8);
- }
- /* 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)
- {
- unsigned char buf;
- int ret;
-
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_STATUS_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- READ_RED_GAIN_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
-
- return (buf << 8);
- }
- static inline int pwc_read_blue_gain(struct pwc_device *pdev)
- {
- unsigned char buf;
- int ret;
-
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_STATUS_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- READ_BLUE_GAIN_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
-
- return (buf << 8);
- }
- 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 usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_CHROM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- AWB_CONTROL_SPEED_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- }
- static inline int pwc_get_wb_speed(struct pwc_device *pdev)
- {
- unsigned char buf;
- int ret;
-
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_CHROM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- AWB_CONTROL_SPEED_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
- return (buf * 0x7f0);
- }
- 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 usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_CHROM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- AWB_CONTROL_DELAY_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- }
- static inline int pwc_get_wb_delay(struct pwc_device *pdev)
- {
- unsigned char buf;
- int ret;
-
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_CHROM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- AWB_CONTROL_DELAY_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
- return (buf << 10);
- }
- 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 usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_STATUS_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- LED_FORMATTER,
- pdev->vcinterface,
- &buf, 2, HZ / 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 = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_STATUS_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- LED_FORMATTER,
- pdev->vcinterface,
- &buf, 2, HZ / 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 = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_LUM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- AUTO_CONTOUR_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
-
- if (contour < 0)
- return 0;
- if (contour > 0xffff)
- contour = 0xffff;
-
- buf = (contour >> 10); /* contour preset is [0..3f] */
- ret = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_LUM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- PRESET_CONTOUR_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- 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 = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_LUM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- AUTO_CONTOUR_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
- if (buf == 0) {
- /* auto mode off, query current preset value */
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_LUM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- PRESET_CONTOUR_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- 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 usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
- SET_LUM_CTL,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- BACK_LIGHT_COMPENSATION_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- }
- static inline int pwc_get_backlight(struct pwc_device *pdev)
- {
- int ret;
- unsigned char buf;
-
- ret = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_LUM_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- BACK_LIGHT_COMPENSATION_FORMATTER,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
- return buf;
- }
- 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 ret;
- unsigned char buf;
-
- ret = RecvControlMsg(SET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1);
- if (ret < 0)
- return ret;
- return buf;
- }
- 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 ret;
- unsigned char buf;
-
- ret = RecvControlMsg(SET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1);
- if (ret < 0)
- return ret;
- Debug("pwc_get_dynamic_noise = %dn", buf);
- return buf;
- }
- int pwc_get_cmos_sensor(struct pwc_device *pdev)
- {
- 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 = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
- GET_STATUS_CTL,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- request,
- pdev->vcinterface,
- &buf, 1, HZ / 2);
- if (ret < 0)
- return ret;
- if (pdev->type < 675)
- return buf | 0x100;
- else
- return buf;
- }
- /* End of Add-Ons */
- /* ************************************************* */
- 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:
- {
- int qual;
- if (copy_from_user(&qual, arg, sizeof(int)))
- ret = -EFAULT;
- else {
- if (qual < 0 || qual > 3)
- ret = -EINVAL;
- else
- ret = pwc_try_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, qual, pdev->vsnapshot);
- if (ret >= 0)
- pdev->vcompression = qual;
- }
- break;
- }
-
- case VIDIOCPWCGCQUAL:
- {
- if (copy_to_user(arg, &pdev->vcompression, sizeof(int)))
- ret = -EFAULT;
- break;
- }
- case VIDIOCPWCPROBE:
- {
- struct pwc_probe probe;
-
- strcpy(probe.name, pdev->vdev->name);
- probe.type = pdev->type;
- if (copy_to_user(arg, &probe, sizeof(probe)))
- ret = -EFAULT;
- break;
- }
- case VIDIOCPWCSAGC:
- {
- int agc;
-
- if (copy_from_user(&agc, arg, sizeof(agc)))
- ret = -EFAULT;
- else {
- if (pwc_set_agc(pdev, agc < 0 ? 1 : 0, agc))
- ret = -EINVAL;
- }
- break;
- }
-
- case VIDIOCPWCGAGC:
- {
- int agc;
-
- if (pwc_get_agc(pdev, &agc))
- ret = -EINVAL;
- else
- if (copy_to_user(arg, &agc, sizeof(agc)))
- ret = -EFAULT;
- break;
- }
-
- case VIDIOCPWCSSHUTTER:
- {
- int shutter_speed;
- if (copy_from_user(&shutter_speed, arg, sizeof(shutter_speed)))
- ret = -EFAULT;
- else
- ret = pwc_set_shutter_speed(pdev, shutter_speed < 0 ? 1 : 0, shutter_speed);
- break;
- }
-
- case VIDIOCPWCSAWB:
- {
- struct pwc_whitebalance wb;
-
- if (copy_from_user(&wb, arg, sizeof(wb)))
- ret = -EFAULT;
- else {
- ret = pwc_set_awb(pdev, wb.mode);
- if (ret >= 0 && wb.mode == PWC_WB_MANUAL) {
- pwc_set_red_gain(pdev, wb.manual_red);
- pwc_set_blue_gain(pdev, wb.manual_blue);
- }
- }
- break;
- }
- case VIDIOCPWCGAWB:
- {
- struct pwc_whitebalance wb;
-
- memset(&wb, 0, sizeof(wb));
- wb.mode = pwc_get_awb(pdev);
- if (wb.mode < 0)
- ret = -EINVAL;
- else {
- if (wb.mode == PWC_WB_MANUAL) {
- wb.manual_red = pwc_get_red_gain(pdev);
- wb.manual_blue = pwc_get_blue_gain(pdev);
- }
- if (wb.mode == PWC_WB_AUTO) {
- wb.read_red = pwc_read_red_gain(pdev);
- wb.read_blue = pwc_read_blue_gain(pdev);
- }
- if (copy_to_user(arg, &wb, sizeof(wb)))
- ret= -EFAULT;
- }
- break;
- }
-
- case VIDIOCPWCSAWBSPEED:
- {
- struct pwc_wb_speed wbs;
-
- if (copy_from_user(&wbs, arg, sizeof(wbs)))
- ret = -EFAULT;
- else {
- if (wbs.control_speed > 0) {
- ret = pwc_set_wb_speed(pdev, wbs.control_speed);
- }
- if (wbs.control_delay > 0) {
- ret = pwc_set_wb_delay(pdev, wbs.control_delay);
- }
- }
- break;
- }
-
- case VIDIOCPWCGAWBSPEED:
- {
- struct pwc_wb_speed wbs;
-
- ret = pwc_get_wb_speed(pdev);
- if (ret < 0)
- break;
- wbs.control_speed = ret;
- ret = pwc_get_wb_delay(pdev);
- if (ret < 0)
- break;
- wbs.control_delay = ret;
- if (copy_to_user(arg, &wbs, sizeof(wbs)))
- ret = -EFAULT;
- break;
- }
- case VIDIOCPWCSLED:
- {
- struct pwc_leds leds;
- if (copy_from_user(&leds, arg, sizeof(leds)))
- ret = -EFAULT;
- else
- ret = pwc_set_leds(pdev, leds.led_on, leds.led_off);
- break;
- }
- case VIDIOCPWCGLED:
- {
- struct pwc_leds leds;
-
- ret = pwc_get_leds(pdev, &leds.led_on, &leds.led_off);
- if (ret < 0)
- break;
- if (copy_to_user(arg, &leds, sizeof(leds)))
- ret = -EFAULT;
- break;
- }
- case VIDIOCPWCSCONTOUR:
- {
- int contour;
-
- if (copy_from_user(&contour, arg, sizeof(contour)))
- ret = -EFAULT;
- else
- ret = pwc_set_contour(pdev, contour);
- break;
- }
-
- case VIDIOCPWCGCONTOUR:
- {
- int contour;
-
- ret = pwc_get_contour(pdev, &contour);
- if (ret < 0)
- break;
-
- if (copy_to_user(arg, &contour, sizeof(contour)))
- ret = -EFAULT;
- break;
- }
-
- case VIDIOCPWCSBACKLIGHT:
- {
- int backlight;
-
- if (copy_from_user(&backlight, arg, sizeof(backlight)))
- ret = -EFAULT;
- else
- ret = pwc_set_backlight(pdev, backlight);
- break;
- }
- case VIDIOCPWCGBACKLIGHT:
- {
- ret = pwc_get_backlight(pdev);
- if (ret < 0)
- break;
- if (copy_to_user(arg, &ret, sizeof(ret)))
- ret = -EFAULT;
- break;
- }
-
- case VIDIOCPWCSFLICKER:
- {
- int flicker;
-
- if (copy_from_user(&flicker, arg, sizeof(flicker)))
- ret = -EFAULT;
- else
- ret = pwc_set_flicker(pdev, flicker);
- break;
- }
- case VIDIOCPWCGFLICKER:
- {
- ret = pwc_get_flicker(pdev);
- if (ret < 0)
- break;
- if (copy_to_user(arg, &ret, sizeof(ret)))
- ret = -EFAULT;
- break;
- }
-
- case VIDIOCPWCSDYNNOISE:
- {
- int dynnoise;
-
- if (copy_from_user(&dynnoise, arg, sizeof(dynnoise)))
- ret = -EFAULT;
- else
- ret = pwc_set_dynamic_noise(pdev, dynnoise);
- break;
- }
-
- case VIDIOCPWCGDYNNOISE:
- {
- ret = pwc_get_dynamic_noise(pdev);
- if (ret < 0)
- break;
- if (copy_to_user(arg, &ret, sizeof(ret)))
- ret = -EFAULT;
- break;
- }
-
- default:
- ret = -ENOIOCTLCMD;
- break;
- }
-
- if (ret > 0)
- return 0;
- return ret;
- }