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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* (C) 1999-2003 Nemosoft Unv.
Luc Saillard2b455db2006-04-24 10:29:46 -03002 (C) 2004-2006 Luc Saillard (luc@saillard.org)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003
4 NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
5 driver and thus may have bugs that are not present in the original version.
6 Please send bug reports and support requests to <luc@saillard.org>.
7 The decompression routines have been implemented by reverse-engineering the
8 Nemosoft binary pwcx module. Caveat emptor.
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23*/
24
25#ifndef PWC_H
26#define PWC_H
27
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include <linux/module.h>
29#include <linux/usb.h>
30#include <linux/spinlock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <linux/wait.h>
Matthias Kaehlckeb9378fd2007-07-02 10:04:52 -030032#include <linux/mutex.h>
Mauro Carvalho Chehab38413fd2008-07-27 19:02:30 -030033#include <linux/mm.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090034#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include <asm/errno.h>
Hans Verkuil479567c2010-09-12 17:05:11 -030036#include <linux/videodev2.h>
Mauro Carvalho Chehab5e87efa2006-06-05 10:26:32 -030037#include <media/v4l2-common.h>
Hans de Goede76ae8532011-07-19 07:14:22 -030038#include <media/v4l2-device.h>
Hans Verkuil35ea11f2008-07-20 08:12:02 -030039#include <media/v4l2-ioctl.h>
Hans de Goede6c9cac82011-06-26 12:52:01 -030040#include <media/v4l2-ctrls.h>
Hans de Goede76ae8532011-07-19 07:14:22 -030041#include <media/v4l2-fh.h>
42#include <media/v4l2-event.h>
Hans de Goede885fe182011-06-06 15:33:44 -030043#include <media/videobuf2-vmalloc.h>
Nam Phạm Thànhe32a7ecc2009-01-12 02:50:17 -030044#ifdef CONFIG_USB_PWC_INPUT_EVDEV
45#include <linux/input.h>
46#endif
Hans de Goede56ae24a2012-01-08 11:29:19 -030047#include "pwc-dec1.h"
48#include "pwc-dec23.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
Luc Saillard2b455db2006-04-24 10:29:46 -030050/* Version block */
Mauro Carvalho Chehab880c35c2011-06-25 10:07:39 -030051#define PWC_VERSION "10.0.15"
Luc Saillard2b455db2006-04-24 10:29:46 -030052#define PWC_NAME "pwc"
53#define PFX PWC_NAME ": "
54
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
56/* Trace certain actions in the driver */
Luc Saillard2b455db2006-04-24 10:29:46 -030057#define PWC_DEBUG_LEVEL_MODULE (1<<0)
58#define PWC_DEBUG_LEVEL_PROBE (1<<1)
59#define PWC_DEBUG_LEVEL_OPEN (1<<2)
60#define PWC_DEBUG_LEVEL_READ (1<<3)
61#define PWC_DEBUG_LEVEL_MEMORY (1<<4)
62#define PWC_DEBUG_LEVEL_FLOW (1<<5)
63#define PWC_DEBUG_LEVEL_SIZE (1<<6)
64#define PWC_DEBUG_LEVEL_IOCTL (1<<7)
65#define PWC_DEBUG_LEVEL_TRACE (1<<8)
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
Luc Saillard2b455db2006-04-24 10:29:46 -030067#define PWC_DEBUG_MODULE(fmt, args...) PWC_DEBUG(MODULE, fmt, ##args)
68#define PWC_DEBUG_PROBE(fmt, args...) PWC_DEBUG(PROBE, fmt, ##args)
69#define PWC_DEBUG_OPEN(fmt, args...) PWC_DEBUG(OPEN, fmt, ##args)
70#define PWC_DEBUG_READ(fmt, args...) PWC_DEBUG(READ, fmt, ##args)
71#define PWC_DEBUG_MEMORY(fmt, args...) PWC_DEBUG(MEMORY, fmt, ##args)
72#define PWC_DEBUG_FLOW(fmt, args...) PWC_DEBUG(FLOW, fmt, ##args)
73#define PWC_DEBUG_SIZE(fmt, args...) PWC_DEBUG(SIZE, fmt, ##args)
74#define PWC_DEBUG_IOCTL(fmt, args...) PWC_DEBUG(IOCTL, fmt, ##args)
75#define PWC_DEBUG_TRACE(fmt, args...) PWC_DEBUG(TRACE, fmt, ##args)
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
77
Trent Piepho05ad3902007-01-30 23:26:01 -030078#ifdef CONFIG_USB_PWC_DEBUG
Luc Saillard2b455db2006-04-24 10:29:46 -030079
80#define PWC_DEBUG_LEVEL (PWC_DEBUG_LEVEL_MODULE)
81
82#define PWC_DEBUG(level, fmt, args...) do {\
Hans de Goede1a4ede62011-06-25 17:10:51 -030083 if ((PWC_DEBUG_LEVEL_ ##level) & pwc_trace) \
84 printk(KERN_DEBUG PFX fmt, ##args); \
85 } while (0)
Luc Saillard2b455db2006-04-24 10:29:46 -030086
87#define PWC_ERROR(fmt, args...) printk(KERN_ERR PFX fmt, ##args)
88#define PWC_WARNING(fmt, args...) printk(KERN_WARNING PFX fmt, ##args)
89#define PWC_INFO(fmt, args...) printk(KERN_INFO PFX fmt, ##args)
90#define PWC_TRACE(fmt, args...) PWC_DEBUG(TRACE, fmt, ##args)
91
Luc Saillard9ee6d782007-04-22 23:54:36 -030092#else /* if ! CONFIG_USB_PWC_DEBUG */
Luc Saillard2b455db2006-04-24 10:29:46 -030093
94#define PWC_ERROR(fmt, args...) printk(KERN_ERR PFX fmt, ##args)
95#define PWC_WARNING(fmt, args...) printk(KERN_WARNING PFX fmt, ##args)
96#define PWC_INFO(fmt, args...) printk(KERN_INFO PFX fmt, ##args)
97#define PWC_TRACE(fmt, args...) do { } while(0)
98#define PWC_DEBUG(level, fmt, args...) do { } while(0)
99
100#define pwc_trace 0
101
102#endif
103
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104/* Defines for ToUCam cameras */
105#define TOUCAM_HEADER_SIZE 8
106#define TOUCAM_TRAILER_SIZE 4
107
108#define FEATURE_MOTOR_PANTILT 0x0001
Luc Saillard2b455db2006-04-24 10:29:46 -0300109#define FEATURE_CODEC1 0x0002
110#define FEATURE_CODEC2 0x0004
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111
Hans de Goede795e6eb2012-01-04 16:58:44 -0300112#define MAX_WIDTH 640
113#define MAX_HEIGHT 480
114
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115/* Ignore errors in the first N frames, to allow for startup delays */
116#define FRAME_LOWMARK 5
117
118/* Size and number of buffers for the ISO pipe. */
Hans de Goede885fe182011-06-06 15:33:44 -0300119#define MAX_ISO_BUFS 3
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120#define ISO_FRAMES_PER_DESC 10
121#define ISO_MAX_FRAME_SIZE 960
122#define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
123
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124/* Maximum size after decompression is 640x480 YUV data, 1.5 * 640 * 480 */
125#define PWC_FRAME_SIZE (460800 + TOUCAM_HEADER_SIZE + TOUCAM_TRAILER_SIZE)
126
Hans de Goede885fe182011-06-06 15:33:44 -0300127/* Absolute minimum and maximum number of buffers available for mmap() */
128#define MIN_FRAMES 2
129#define MAX_FRAMES 16
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130
Luc Saillard2b455db2006-04-24 10:29:46 -0300131/* Some macros to quickly find the type of a webcam */
132#define DEVICE_USE_CODEC1(x) ((x)<675)
133#define DEVICE_USE_CODEC2(x) ((x)>=675 && (x)<700)
134#define DEVICE_USE_CODEC3(x) ((x)>=700)
135#define DEVICE_USE_CODEC23(x) ((x)>=675)
136
Hans de Goede6c9cac82011-06-26 12:52:01 -0300137/* Request types: video */
138#define SET_LUM_CTL 0x01
139#define GET_LUM_CTL 0x02
140#define SET_CHROM_CTL 0x03
141#define GET_CHROM_CTL 0x04
142#define SET_STATUS_CTL 0x05
143#define GET_STATUS_CTL 0x06
144#define SET_EP_STREAM_CTL 0x07
145#define GET_EP_STREAM_CTL 0x08
146#define GET_XX_CTL 0x09
147#define SET_XX_CTL 0x0A
148#define GET_XY_CTL 0x0B
149#define SET_XY_CTL 0x0C
150#define SET_MPT_CTL 0x0D
151#define GET_MPT_CTL 0x0E
152
153/* Selectors for the Luminance controls [GS]ET_LUM_CTL */
154#define AGC_MODE_FORMATTER 0x2000
155#define PRESET_AGC_FORMATTER 0x2100
156#define SHUTTER_MODE_FORMATTER 0x2200
157#define PRESET_SHUTTER_FORMATTER 0x2300
158#define PRESET_CONTOUR_FORMATTER 0x2400
159#define AUTO_CONTOUR_FORMATTER 0x2500
160#define BACK_LIGHT_COMPENSATION_FORMATTER 0x2600
161#define CONTRAST_FORMATTER 0x2700
162#define DYNAMIC_NOISE_CONTROL_FORMATTER 0x2800
163#define FLICKERLESS_MODE_FORMATTER 0x2900
164#define AE_CONTROL_SPEED 0x2A00
165#define BRIGHTNESS_FORMATTER 0x2B00
166#define GAMMA_FORMATTER 0x2C00
167
168/* Selectors for the Chrominance controls [GS]ET_CHROM_CTL */
169#define WB_MODE_FORMATTER 0x1000
170#define AWB_CONTROL_SPEED_FORMATTER 0x1100
171#define AWB_CONTROL_DELAY_FORMATTER 0x1200
172#define PRESET_MANUAL_RED_GAIN_FORMATTER 0x1300
173#define PRESET_MANUAL_BLUE_GAIN_FORMATTER 0x1400
174#define COLOUR_MODE_FORMATTER 0x1500
175#define SATURATION_MODE_FORMATTER1 0x1600
176#define SATURATION_MODE_FORMATTER2 0x1700
177
178/* Selectors for the Status controls [GS]ET_STATUS_CTL */
179#define SAVE_USER_DEFAULTS_FORMATTER 0x0200
180#define RESTORE_USER_DEFAULTS_FORMATTER 0x0300
181#define RESTORE_FACTORY_DEFAULTS_FORMATTER 0x0400
182#define READ_AGC_FORMATTER 0x0500
183#define READ_SHUTTER_FORMATTER 0x0600
184#define READ_RED_GAIN_FORMATTER 0x0700
185#define READ_BLUE_GAIN_FORMATTER 0x0800
186
187/* Formatters for the motorized pan & tilt [GS]ET_MPT_CTL */
188#define PT_RELATIVE_CONTROL_FORMATTER 0x01
189#define PT_RESET_CONTROL_FORMATTER 0x02
190#define PT_STATUS_FORMATTER 0x03
191
Hans de Goedea08d2c72011-12-31 07:45:39 -0300192/* Enumeration of image sizes */
193#define PSZ_SQCIF 0x00
194#define PSZ_QSIF 0x01
195#define PSZ_QCIF 0x02
196#define PSZ_SIF 0x03
197#define PSZ_CIF 0x04
198#define PSZ_VGA 0x05
199#define PSZ_MAX 6
200
201struct pwc_raw_frame {
202 __le16 type; /* type of the webcam */
203 __le16 vbandlength; /* Size of 4 lines compressed (used by the
204 decompressor) */
205 __u8 cmd[4]; /* the four byte of the command (in case of
206 nala, only the first 3 bytes is filled) */
207 __u8 rawframe[0]; /* frame_size = H / 4 * vbandlength */
208} __packed;
209
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210/* intermediate buffers with raw data from the USB cam */
211struct pwc_frame_buf
212{
Hans de Goede885fe182011-06-06 15:33:44 -0300213 struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */
214 struct list_head list;
215 void *data;
216 int filled; /* number of bytes filled */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217};
218
219struct pwc_device
220{
Hans de Goede9a7b2d12011-06-06 14:43:39 -0300221 struct video_device vdev;
Hans de Goede76ae8532011-07-19 07:14:22 -0300222 struct v4l2_device v4l2_dev;
Luc Saillard2b455db2006-04-24 10:29:46 -0300223
Hans de Goedeceede9f2012-05-09 04:43:12 -0300224 /* videobuf2 queue and queued buffers list */
225 struct vb2_queue vb_queue;
226 struct list_head queued_bufs;
227 spinlock_t queued_bufs_lock; /* Protects queued_bufs */
228
Hans de Goedecd5de2622013-04-01 18:04:21 -0300229 /* If taking both locks vb_queue_lock must always be locked first! */
Hans de Goedeceede9f2012-05-09 04:43:12 -0300230 struct mutex v4l2_lock; /* Protects everything else */
231 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */
232
233 /* Pointer to our usb_device, will be NULL after unplug */
234 struct usb_device *udev; /* Both mutexes most be hold when setting! */
Hans de Goedec1127132011-07-03 11:50:51 -0300235
Hans de Goede1a4ede62011-06-25 17:10:51 -0300236 /* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */
237 int type;
238 int release; /* release number */
239 int features; /* feature bits */
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -0300240
Hans de Goede1a4ede62011-06-25 17:10:51 -0300241 /*** Video data ***/
Hans de Goede1a4ede62011-06-25 17:10:51 -0300242 int vendpoint; /* video isoc endpoint */
243 int vcinterface; /* video control interface */
244 int valternate; /* alternate interface needed */
Hans de Goededc8a7e82011-12-31 10:52:02 -0300245 int vframes; /* frames-per-second */
Hans de Goede1a4ede62011-06-25 17:10:51 -0300246 int pixfmt; /* pixelformat: V4L2_PIX_FMT_YUV420 or _PWCX */
247 int vframe_count; /* received frames */
248 int vmax_packet_size; /* USB maxpacket size */
249 int vlast_packet_size; /* for frame synchronisation */
250 int visoc_errors; /* number of contiguous ISOC errors */
Hans de Goede1a4ede62011-06-25 17:10:51 -0300251 int vbandlength; /* compressed band length; 0 is uncompressed */
Hans de Goede1a4ede62011-06-25 17:10:51 -0300252 char vsync; /* used by isoc handler */
253 char vmirror; /* for ToUCaM series */
Hans de Goede3b4d0ec2011-06-26 03:51:19 -0300254 char power_save; /* Do powersaving for this cam */
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -0300255
Hans de Goede1a4ede62011-06-25 17:10:51 -0300256 unsigned char cmd_buf[13];
Hans de Goede24be6892012-01-10 17:02:04 -0300257 unsigned char *ctrl_buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258
Hans de Goede04613c52011-06-26 13:57:15 -0300259 struct urb *urbs[MAX_ISO_BUFS];
Hans de Goede885fe182011-06-06 15:33:44 -0300260
261 /*
262 * Frame currently being filled, this only gets touched by the
263 * isoc urb complete handler, and by stream start / stop since
264 * start / stop touch it before / after starting / killing the urbs
265 * no locking is needed around this
266 */
267 struct pwc_frame_buf *fill_buf;
268
Hans de Goede1a4ede62011-06-25 17:10:51 -0300269 int frame_header_size, frame_trailer_size;
270 int frame_size;
271 int frame_total_size; /* including header & trailer */
272 int drop_frames;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273
Hans de Goede56ae24a2012-01-08 11:29:19 -0300274 union { /* private data for decompression engine */
275 struct pwc_dec1_private dec1;
276 struct pwc_dec23_private dec23;
277 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
Hans de Goede1a4ede62011-06-25 17:10:51 -0300279 /*
280 * We have an 'image' and a 'view', where 'image' is the fixed-size img
281 * as delivered by the camera, and 'view' is the size requested by the
282 * program. The camera image is centered in this viewport, laced with
283 * a gray or black border. view_min <= image <= view <= view_max;
284 */
285 int image_mask; /* supported sizes */
Hans de Goede795e6eb2012-01-04 16:58:44 -0300286 int width, height; /* current resolution */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
Nam Phạm Thànhe32a7ecc2009-01-12 02:50:17 -0300288#ifdef CONFIG_USB_PWC_INPUT_EVDEV
Hans de Goede1a4ede62011-06-25 17:10:51 -0300289 struct input_dev *button_dev; /* webcam snapshot button input */
290 char button_phys[64];
Nam Phạm Thànhe32a7ecc2009-01-12 02:50:17 -0300291#endif
Hans de Goede6c9cac82011-06-26 12:52:01 -0300292
293 /* controls */
294 struct v4l2_ctrl_handler ctrl_handler;
295 u16 saturation_fmt;
296 struct v4l2_ctrl *brightness;
297 struct v4l2_ctrl *contrast;
298 struct v4l2_ctrl *saturation;
299 struct v4l2_ctrl *gamma;
300 struct {
301 /* awb / red-blue balance cluster */
302 struct v4l2_ctrl *auto_white_balance;
303 struct v4l2_ctrl *red_balance;
304 struct v4l2_ctrl *blue_balance;
305 /* usb ctrl transfers are slow, so we cache things */
306 int color_bal_valid;
307 unsigned long last_color_bal_update; /* In jiffies */
308 s32 last_red_balance;
309 s32 last_blue_balance;
310 };
311 struct {
312 /* autogain / gain cluster */
313 struct v4l2_ctrl *autogain;
314 struct v4l2_ctrl *gain;
315 int gain_valid;
316 unsigned long last_gain_update; /* In jiffies */
317 s32 last_gain;
318 };
319 struct {
320 /* exposure_auto / exposure cluster */
321 struct v4l2_ctrl *exposure_auto;
322 struct v4l2_ctrl *exposure;
323 int exposure_valid;
324 unsigned long last_exposure_update; /* In jiffies */
325 s32 last_exposure;
326 };
327 struct v4l2_ctrl *colorfx;
328 struct {
329 /* autocontour/contour cluster */
330 struct v4l2_ctrl *autocontour;
331 struct v4l2_ctrl *contour;
332 };
333 struct v4l2_ctrl *backlight;
334 struct v4l2_ctrl *flicker;
335 struct v4l2_ctrl *noise_reduction;
336 struct v4l2_ctrl *save_user;
337 struct v4l2_ctrl *restore_user;
338 struct v4l2_ctrl *restore_factory;
Hans de Goedef4af65952011-10-09 09:56:23 -0300339 struct v4l2_ctrl *awb_speed;
340 struct v4l2_ctrl *awb_delay;
Hans de Goede294e2892011-07-03 12:23:24 -0300341 struct {
342 /* motor control cluster */
343 struct v4l2_ctrl *motor_pan;
344 struct v4l2_ctrl *motor_tilt;
345 struct v4l2_ctrl *motor_pan_reset;
346 struct v4l2_ctrl *motor_tilt_reset;
347 };
Hans de Goede6c9cac82011-06-26 12:52:01 -0300348 /* CODEC3 models have both gain and exposure controlled by autogain */
349 struct v4l2_ctrl *autogain_expo_cluster[3];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350};
351
Luc Saillard2b455db2006-04-24 10:29:46 -0300352/* Global variables */
Trent Piepho05ad3902007-01-30 23:26:01 -0300353#ifdef CONFIG_USB_PWC_DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354extern int pwc_trace;
Luc Saillard2b455db2006-04-24 10:29:46 -0300355#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356
357/** Functions in pwc-misc.c */
358/* sizes in pixels */
Hans de Goede795e6eb2012-01-04 16:58:44 -0300359extern const int pwc_image_sizes[PSZ_MAX][2];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360
Hans de Goede795e6eb2012-01-04 16:58:44 -0300361int pwc_get_size(struct pwc_device *pdev, int width, int height);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362void pwc_construct(struct pwc_device *pdev);
363
364/** Functions in pwc-ctrl.c */
365/* Request a certain video mode. Returns < 0 if not possible */
Hans de Goededc8a7e82011-12-31 10:52:02 -0300366extern int pwc_set_video_mode(struct pwc_device *pdev, int width, int height,
Hans de Goede938d5b92012-01-10 13:14:46 -0300367 int pixfmt, int frames, int *compression, int send_to_cam);
Luc Saillard9ee6d782007-04-22 23:54:36 -0300368extern unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369extern int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370extern int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor);
Hans de Goede294e2892011-07-03 12:23:24 -0300371extern int send_control_msg(struct pwc_device *pdev,
372 u8 request, u16 value, void *buf, int buflen);
Luc Saillard2b455db2006-04-24 10:29:46 -0300373
Hans de Goede6c9cac82011-06-26 12:52:01 -0300374/* Control get / set helpers */
375int pwc_get_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data);
376int pwc_set_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, u8 data);
377int pwc_get_s8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data);
378#define pwc_set_s8_ctrl pwc_set_u8_ctrl
379int pwc_get_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *dat);
380int pwc_set_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, u16 data);
381int pwc_button_ctrl(struct pwc_device *pdev, u16 value);
382int pwc_init_controls(struct pwc_device *pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383
384/* Power down or up the camera; not supported by all models */
Hans de Goede3b4d0ec2011-06-26 03:51:19 -0300385extern void pwc_camera_power(struct pwc_device *pdev, int power);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
Hans Verkuilafa38522011-01-22 06:34:55 -0300387extern const struct v4l2_ioctl_ops pwc_ioctl_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388
389/** pwc-uncompress.c */
390/* Expand frame to image, possibly including decompression. Uses read_frame and fill_image */
Hans de Goede885fe182011-06-06 15:33:44 -0300391int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393#endif