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[media] vb2: stop_streaming should return void
[deliverable/linux.git] / drivers / media / usb / s2255 / s2255drv.c
1 /*
2 * s2255drv.c - a driver for the Sensoray 2255 USB video capture device
3 *
4 * Copyright (C) 2007-2014 by Sensoray Company Inc.
5 * Dean Anderson
6 *
7 * Some video buffer code based on vivi driver:
8 *
9 * Sensoray 2255 device supports 4 simultaneous channels.
10 * The channels are not "crossbar" inputs, they are physically
11 * attached to separate video decoders.
12 *
13 * Because of USB2.0 bandwidth limitations. There is only a
14 * certain amount of data which may be transferred at one time.
15 *
16 * Example maximum bandwidth utilization:
17 *
18 * -full size, color mode YUYV or YUV422P: 2 channels at once
19 * -full or half size Grey scale: all 4 channels at once
20 * -half size, color mode YUYV or YUV422P: all 4 channels at once
21 * -full size, color mode YUYV or YUV422P 1/2 frame rate: all 4 channels
22 * at once.
23 *
24 * This program is free software; you can redistribute it and/or modify
25 * it under the terms of the GNU General Public License as published by
26 * the Free Software Foundation; either version 2 of the License, or
27 * (at your option) any later version.
28 *
29 * This program is distributed in the hope that it will be useful,
30 * but WITHOUT ANY WARRANTY; without even the implied warranty of
31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
32 * GNU General Public License for more details.
33 *
34 * You should have received a copy of the GNU General Public License
35 * along with this program; if not, write to the Free Software
36 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
37 */
38
39 #include <linux/module.h>
40 #include <linux/firmware.h>
41 #include <linux/kernel.h>
42 #include <linux/mutex.h>
43 #include <linux/slab.h>
44 #include <linux/videodev2.h>
45 #include <linux/mm.h>
46 #include <linux/vmalloc.h>
47 #include <linux/usb.h>
48 #include <media/videobuf2-vmalloc.h>
49 #include <media/v4l2-common.h>
50 #include <media/v4l2-device.h>
51 #include <media/v4l2-ioctl.h>
52 #include <media/v4l2-ctrls.h>
53 #include <media/v4l2-event.h>
54
55 #define S2255_VERSION "1.25.1"
56 #define FIRMWARE_FILE_NAME "f2255usb.bin"
57
58 /* default JPEG quality */
59 #define S2255_DEF_JPEG_QUAL 50
60 /* vendor request in */
61 #define S2255_VR_IN 0
62 /* vendor request out */
63 #define S2255_VR_OUT 1
64 /* firmware query */
65 #define S2255_VR_FW 0x30
66 /* USB endpoint number for configuring the device */
67 #define S2255_CONFIG_EP 2
68 /* maximum time for DSP to start responding after last FW word loaded(ms) */
69 #define S2255_DSP_BOOTTIME 800
70 /* maximum time to wait for firmware to load (ms) */
71 #define S2255_LOAD_TIMEOUT (5000 + S2255_DSP_BOOTTIME)
72 #define S2255_MIN_BUFS 2
73 #define S2255_SETMODE_TIMEOUT 500
74 #define S2255_VIDSTATUS_TIMEOUT 350
75 #define S2255_MARKER_FRAME cpu_to_le32(0x2255DA4AL)
76 #define S2255_MARKER_RESPONSE cpu_to_le32(0x2255ACACL)
77 #define S2255_RESPONSE_SETMODE cpu_to_le32(0x01)
78 #define S2255_RESPONSE_FW cpu_to_le32(0x10)
79 #define S2255_RESPONSE_STATUS cpu_to_le32(0x20)
80 #define S2255_USB_XFER_SIZE (16 * 1024)
81 #define MAX_CHANNELS 4
82 #define SYS_FRAMES 4
83 /* maximum size is PAL full size plus room for the marker header(s) */
84 #define SYS_FRAMES_MAXSIZE (720*288*2*2 + 4096)
85 #define DEF_USB_BLOCK S2255_USB_XFER_SIZE
86 #define LINE_SZ_4CIFS_NTSC 640
87 #define LINE_SZ_2CIFS_NTSC 640
88 #define LINE_SZ_1CIFS_NTSC 320
89 #define LINE_SZ_4CIFS_PAL 704
90 #define LINE_SZ_2CIFS_PAL 704
91 #define LINE_SZ_1CIFS_PAL 352
92 #define NUM_LINES_4CIFS_NTSC 240
93 #define NUM_LINES_2CIFS_NTSC 240
94 #define NUM_LINES_1CIFS_NTSC 240
95 #define NUM_LINES_4CIFS_PAL 288
96 #define NUM_LINES_2CIFS_PAL 288
97 #define NUM_LINES_1CIFS_PAL 288
98 #define LINE_SZ_DEF 640
99 #define NUM_LINES_DEF 240
100
101
102 /* predefined settings */
103 #define FORMAT_NTSC 1
104 #define FORMAT_PAL 2
105
106 #define SCALE_4CIFS 1 /* 640x480(NTSC) or 704x576(PAL) */
107 #define SCALE_2CIFS 2 /* 640x240(NTSC) or 704x288(PAL) */
108 #define SCALE_1CIFS 3 /* 320x240(NTSC) or 352x288(PAL) */
109 /* SCALE_4CIFSI is the 2 fields interpolated into one */
110 #define SCALE_4CIFSI 4 /* 640x480(NTSC) or 704x576(PAL) high quality */
111
112 #define COLOR_YUVPL 1 /* YUV planar */
113 #define COLOR_YUVPK 2 /* YUV packed */
114 #define COLOR_Y8 4 /* monochrome */
115 #define COLOR_JPG 5 /* JPEG */
116
117 #define MASK_COLOR 0x000000ff
118 #define MASK_JPG_QUALITY 0x0000ff00
119 #define MASK_INPUT_TYPE 0x000f0000
120 /* frame decimation. */
121 #define FDEC_1 1 /* capture every frame. default */
122 #define FDEC_2 2 /* capture every 2nd frame */
123 #define FDEC_3 3 /* capture every 3rd frame */
124 #define FDEC_5 5 /* capture every 5th frame */
125
126 /*-------------------------------------------------------
127 * Default mode parameters.
128 *-------------------------------------------------------*/
129 #define DEF_SCALE SCALE_4CIFS
130 #define DEF_COLOR COLOR_YUVPL
131 #define DEF_FDEC FDEC_1
132 #define DEF_BRIGHT 0
133 #define DEF_CONTRAST 0x5c
134 #define DEF_SATURATION 0x80
135 #define DEF_HUE 0
136
137 /* usb config commands */
138 #define IN_DATA_TOKEN cpu_to_le32(0x2255c0de)
139 #define CMD_2255 0xc2255000
140 #define CMD_SET_MODE cpu_to_le32((CMD_2255 | 0x10))
141 #define CMD_START cpu_to_le32((CMD_2255 | 0x20))
142 #define CMD_STOP cpu_to_le32((CMD_2255 | 0x30))
143 #define CMD_STATUS cpu_to_le32((CMD_2255 | 0x40))
144
145 struct s2255_mode {
146 u32 format; /* input video format (NTSC, PAL) */
147 u32 scale; /* output video scale */
148 u32 color; /* output video color format */
149 u32 fdec; /* frame decimation */
150 u32 bright; /* brightness */
151 u32 contrast; /* contrast */
152 u32 saturation; /* saturation */
153 u32 hue; /* hue (NTSC only)*/
154 u32 single; /* capture 1 frame at a time (!=0), continuously (==0)*/
155 u32 usb_block; /* block size. should be 4096 of DEF_USB_BLOCK */
156 u32 restart; /* if DSP requires restart */
157 };
158
159
160 #define S2255_READ_IDLE 0
161 #define S2255_READ_FRAME 1
162
163 /* frame structure */
164 struct s2255_framei {
165 unsigned long size;
166 unsigned long ulState; /* ulState:S2255_READ_IDLE, S2255_READ_FRAME*/
167 void *lpvbits; /* image data */
168 unsigned long cur_size; /* current data copied to it */
169 };
170
171 /* image buffer structure */
172 struct s2255_bufferi {
173 unsigned long dwFrames; /* number of frames in buffer */
174 struct s2255_framei frame[SYS_FRAMES]; /* array of FRAME structures */
175 };
176
177 #define DEF_MODEI_NTSC_CONT {FORMAT_NTSC, DEF_SCALE, DEF_COLOR, \
178 DEF_FDEC, DEF_BRIGHT, DEF_CONTRAST, DEF_SATURATION, \
179 DEF_HUE, 0, DEF_USB_BLOCK, 0}
180
181 /* for firmware loading, fw_state */
182 #define S2255_FW_NOTLOADED 0
183 #define S2255_FW_LOADED_DSPWAIT 1
184 #define S2255_FW_SUCCESS 2
185 #define S2255_FW_FAILED 3
186 #define S2255_FW_DISCONNECTING 4
187 #define S2255_FW_MARKER cpu_to_le32(0x22552f2f)
188 /* 2255 read states */
189 #define S2255_READ_IDLE 0
190 #define S2255_READ_FRAME 1
191 struct s2255_fw {
192 int fw_loaded;
193 int fw_size;
194 struct urb *fw_urb;
195 atomic_t fw_state;
196 void *pfw_data;
197 wait_queue_head_t wait_fw;
198 const struct firmware *fw;
199 };
200
201 struct s2255_pipeinfo {
202 u32 max_transfer_size;
203 u32 cur_transfer_size;
204 u8 *transfer_buffer;
205 u32 state;
206 void *stream_urb;
207 void *dev; /* back pointer to s2255_dev struct*/
208 u32 err_count;
209 u32 idx;
210 };
211
212 struct s2255_fmt; /*forward declaration */
213 struct s2255_dev;
214
215 /* 2255 video channel */
216 struct s2255_vc {
217 struct s2255_dev *dev;
218 struct video_device vdev;
219 struct v4l2_ctrl_handler hdl;
220 struct v4l2_ctrl *jpegqual_ctrl;
221 int resources;
222 struct list_head buf_list;
223 struct s2255_bufferi buffer;
224 struct s2255_mode mode;
225 v4l2_std_id std;
226 /* jpeg compression */
227 unsigned jpegqual;
228 /* capture parameters (for high quality mode full size) */
229 struct v4l2_captureparm cap_parm;
230 int cur_frame;
231 int last_frame;
232 /* allocated image size */
233 unsigned long req_image_size;
234 /* received packet size */
235 unsigned long pkt_size;
236 int bad_payload;
237 unsigned long frame_count;
238 /* if JPEG image */
239 int jpg_size;
240 /* if channel configured to default state */
241 int configured;
242 wait_queue_head_t wait_setmode;
243 int setmode_ready;
244 /* video status items */
245 int vidstatus;
246 wait_queue_head_t wait_vidstatus;
247 int vidstatus_ready;
248 unsigned int width;
249 unsigned int height;
250 enum v4l2_field field;
251 const struct s2255_fmt *fmt;
252 int idx; /* channel number on device, 0-3 */
253 struct vb2_queue vb_vidq;
254 struct mutex vb_lock; /* streaming lock */
255 spinlock_t qlock;
256 };
257
258
259 struct s2255_dev {
260 struct s2255_vc vc[MAX_CHANNELS];
261 struct v4l2_device v4l2_dev;
262 atomic_t num_channels;
263 int frames;
264 struct mutex lock; /* channels[].vdev.lock */
265 struct mutex cmdlock; /* protects cmdbuf */
266 struct usb_device *udev;
267 struct usb_interface *interface;
268 u8 read_endpoint;
269 struct timer_list timer;
270 struct s2255_fw *fw_data;
271 struct s2255_pipeinfo pipe;
272 u32 cc; /* current channel */
273 int frame_ready;
274 int chn_ready;
275 /* dsp firmware version (f2255usb.bin) */
276 int dsp_fw_ver;
277 u16 pid; /* product id */
278 #define S2255_CMDBUF_SIZE 512
279 __le32 *cmdbuf;
280 };
281
282 static inline struct s2255_dev *to_s2255_dev(struct v4l2_device *v4l2_dev)
283 {
284 return container_of(v4l2_dev, struct s2255_dev, v4l2_dev);
285 }
286
287 struct s2255_fmt {
288 char *name;
289 u32 fourcc;
290 int depth;
291 };
292
293 /* buffer for one video frame */
294 struct s2255_buffer {
295 /* common v4l buffer stuff -- must be first */
296 struct vb2_buffer vb;
297 struct list_head list;
298 };
299
300
301 /* current cypress EEPROM firmware version */
302 #define S2255_CUR_USB_FWVER ((3 << 8) | 12)
303 /* current DSP FW version */
304 #define S2255_CUR_DSP_FWVER 10104
305 /* Need DSP version 5+ for video status feature */
306 #define S2255_MIN_DSP_STATUS 5
307 #define S2255_MIN_DSP_COLORFILTER 8
308 #define S2255_NORMS (V4L2_STD_ALL)
309
310 /* private V4L2 controls */
311
312 /*
313 * The following chart displays how COLORFILTER should be set
314 * =========================================================
315 * = fourcc = COLORFILTER =
316 * = ===============================
317 * = = 0 = 1 =
318 * =========================================================
319 * = V4L2_PIX_FMT_GREY(Y8) = monochrome from = monochrome=
320 * = = s-video or = composite =
321 * = = B/W camera = input =
322 * =========================================================
323 * = other = color, svideo = color, =
324 * = = = composite =
325 * =========================================================
326 *
327 * Notes:
328 * channels 0-3 on 2255 are composite
329 * channels 0-1 on 2257 are composite, 2-3 are s-video
330 * If COLORFILTER is 0 with a composite color camera connected,
331 * the output will appear monochrome but hatching
332 * will occur.
333 * COLORFILTER is different from "color killer" and "color effects"
334 * for reasons above.
335 */
336 #define S2255_V4L2_YC_ON 1
337 #define S2255_V4L2_YC_OFF 0
338 #define V4L2_CID_S2255_COLORFILTER (V4L2_CID_USER_S2255_BASE + 0)
339
340 /* frame prefix size (sent once every frame) */
341 #define PREFIX_SIZE 512
342
343 /* Channels on box are in reverse order */
344 static unsigned long G_chnmap[MAX_CHANNELS] = {3, 2, 1, 0};
345
346 static int debug;
347
348 static int s2255_start_readpipe(struct s2255_dev *dev);
349 static void s2255_stop_readpipe(struct s2255_dev *dev);
350 static int s2255_start_acquire(struct s2255_vc *vc);
351 static int s2255_stop_acquire(struct s2255_vc *vc);
352 static void s2255_fillbuff(struct s2255_vc *vc, struct s2255_buffer *buf,
353 int jpgsize);
354 static int s2255_set_mode(struct s2255_vc *vc, struct s2255_mode *mode);
355 static int s2255_board_shutdown(struct s2255_dev *dev);
356 static void s2255_fwload_start(struct s2255_dev *dev, int reset);
357 static void s2255_destroy(struct s2255_dev *dev);
358 static long s2255_vendor_req(struct s2255_dev *dev, unsigned char req,
359 u16 index, u16 value, void *buf,
360 s32 buf_len, int bOut);
361
362 /* dev_err macro with driver name */
363 #define S2255_DRIVER_NAME "s2255"
364 #define s2255_dev_err(dev, fmt, arg...) \
365 dev_err(dev, S2255_DRIVER_NAME " - " fmt, ##arg)
366
367 #define dprintk(dev, level, fmt, arg...) \
368 v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ## arg)
369
370 static struct usb_driver s2255_driver;
371
372 /* start video number */
373 static int video_nr = -1; /* /dev/videoN, -1 for autodetect */
374
375 /* Enable jpeg capture. */
376 static int jpeg_enable = 1;
377
378 module_param(debug, int, 0644);
379 MODULE_PARM_DESC(debug, "Debug level(0-100) default 0");
380 module_param(video_nr, int, 0644);
381 MODULE_PARM_DESC(video_nr, "start video minor(-1 default autodetect)");
382 module_param(jpeg_enable, int, 0644);
383 MODULE_PARM_DESC(jpeg_enable, "Jpeg enable(1-on 0-off) default 1");
384
385 /* USB device table */
386 #define USB_SENSORAY_VID 0x1943
387 static struct usb_device_id s2255_table[] = {
388 {USB_DEVICE(USB_SENSORAY_VID, 0x2255)},
389 {USB_DEVICE(USB_SENSORAY_VID, 0x2257)}, /*same family as 2255*/
390 { } /* Terminating entry */
391 };
392 MODULE_DEVICE_TABLE(usb, s2255_table);
393
394 #define BUFFER_TIMEOUT msecs_to_jiffies(400)
395
396 /* image formats. */
397 /* JPEG formats must be defined last to support jpeg_enable parameter */
398 static const struct s2255_fmt formats[] = {
399 {
400 .name = "4:2:2, packed, YUYV",
401 .fourcc = V4L2_PIX_FMT_YUYV,
402 .depth = 16
403
404 }, {
405 .name = "4:2:2, packed, UYVY",
406 .fourcc = V4L2_PIX_FMT_UYVY,
407 .depth = 16
408 }, {
409 .name = "4:2:2, planar, YUV422P",
410 .fourcc = V4L2_PIX_FMT_YUV422P,
411 .depth = 16
412
413 }, {
414 .name = "8bpp GREY",
415 .fourcc = V4L2_PIX_FMT_GREY,
416 .depth = 8
417 }, {
418 .name = "JPG",
419 .fourcc = V4L2_PIX_FMT_JPEG,
420 .depth = 24
421 }, {
422 .name = "MJPG",
423 .fourcc = V4L2_PIX_FMT_MJPEG,
424 .depth = 24
425 }
426 };
427
428 static int norm_maxw(struct s2255_vc *vc)
429 {
430 return (vc->std & V4L2_STD_525_60) ?
431 LINE_SZ_4CIFS_NTSC : LINE_SZ_4CIFS_PAL;
432 }
433
434 static int norm_maxh(struct s2255_vc *vc)
435 {
436 return (vc->std & V4L2_STD_525_60) ?
437 (NUM_LINES_1CIFS_NTSC * 2) : (NUM_LINES_1CIFS_PAL * 2);
438 }
439
440 static int norm_minw(struct s2255_vc *vc)
441 {
442 return (vc->std & V4L2_STD_525_60) ?
443 LINE_SZ_1CIFS_NTSC : LINE_SZ_1CIFS_PAL;
444 }
445
446 static int norm_minh(struct s2255_vc *vc)
447 {
448 return (vc->std & V4L2_STD_525_60) ?
449 (NUM_LINES_1CIFS_NTSC) : (NUM_LINES_1CIFS_PAL);
450 }
451
452
453 /*
454 * TODO: fixme: move YUV reordering to hardware
455 * converts 2255 planar format to yuyv or uyvy
456 */
457 static void planar422p_to_yuv_packed(const unsigned char *in,
458 unsigned char *out,
459 int width, int height,
460 int fmt)
461 {
462 unsigned char *pY;
463 unsigned char *pCb;
464 unsigned char *pCr;
465 unsigned long size = height * width;
466 unsigned int i;
467 pY = (unsigned char *)in;
468 pCr = (unsigned char *)in + height * width;
469 pCb = (unsigned char *)in + height * width + (height * width / 2);
470 for (i = 0; i < size * 2; i += 4) {
471 out[i] = (fmt == V4L2_PIX_FMT_YUYV) ? *pY++ : *pCr++;
472 out[i + 1] = (fmt == V4L2_PIX_FMT_YUYV) ? *pCr++ : *pY++;
473 out[i + 2] = (fmt == V4L2_PIX_FMT_YUYV) ? *pY++ : *pCb++;
474 out[i + 3] = (fmt == V4L2_PIX_FMT_YUYV) ? *pCb++ : *pY++;
475 }
476 return;
477 }
478
479 static void s2255_reset_dsppower(struct s2255_dev *dev)
480 {
481 s2255_vendor_req(dev, 0x40, 0x0000, 0x0001, NULL, 0, 1);
482 msleep(20);
483 s2255_vendor_req(dev, 0x50, 0x0000, 0x0000, NULL, 0, 1);
484 msleep(600);
485 s2255_vendor_req(dev, 0x10, 0x0000, 0x0000, NULL, 0, 1);
486 return;
487 }
488
489 /* kickstarts the firmware loading. from probe
490 */
491 static void s2255_timer(unsigned long user_data)
492 {
493 struct s2255_fw *data = (struct s2255_fw *)user_data;
494 if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) {
495 pr_err("s2255: can't submit urb\n");
496 atomic_set(&data->fw_state, S2255_FW_FAILED);
497 /* wake up anything waiting for the firmware */
498 wake_up(&data->wait_fw);
499 return;
500 }
501 }
502
503
504 /* this loads the firmware asynchronously.
505 Originally this was done synchronously in probe.
506 But it is better to load it asynchronously here than block
507 inside the probe function. Blocking inside probe affects boot time.
508 FW loading is triggered by the timer in the probe function
509 */
510 static void s2255_fwchunk_complete(struct urb *urb)
511 {
512 struct s2255_fw *data = urb->context;
513 struct usb_device *udev = urb->dev;
514 int len;
515 if (urb->status) {
516 dev_err(&udev->dev, "URB failed with status %d\n", urb->status);
517 atomic_set(&data->fw_state, S2255_FW_FAILED);
518 /* wake up anything waiting for the firmware */
519 wake_up(&data->wait_fw);
520 return;
521 }
522 if (data->fw_urb == NULL) {
523 s2255_dev_err(&udev->dev, "disconnected\n");
524 atomic_set(&data->fw_state, S2255_FW_FAILED);
525 /* wake up anything waiting for the firmware */
526 wake_up(&data->wait_fw);
527 return;
528 }
529 #define CHUNK_SIZE 512
530 /* all USB transfers must be done with continuous kernel memory.
531 can't allocate more than 128k in current linux kernel, so
532 upload the firmware in chunks
533 */
534 if (data->fw_loaded < data->fw_size) {
535 len = (data->fw_loaded + CHUNK_SIZE) > data->fw_size ?
536 data->fw_size % CHUNK_SIZE : CHUNK_SIZE;
537
538 if (len < CHUNK_SIZE)
539 memset(data->pfw_data, 0, CHUNK_SIZE);
540
541 memcpy(data->pfw_data,
542 (char *) data->fw->data + data->fw_loaded, len);
543
544 usb_fill_bulk_urb(data->fw_urb, udev, usb_sndbulkpipe(udev, 2),
545 data->pfw_data, CHUNK_SIZE,
546 s2255_fwchunk_complete, data);
547 if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) {
548 dev_err(&udev->dev, "failed submit URB\n");
549 atomic_set(&data->fw_state, S2255_FW_FAILED);
550 /* wake up anything waiting for the firmware */
551 wake_up(&data->wait_fw);
552 return;
553 }
554 data->fw_loaded += len;
555 } else
556 atomic_set(&data->fw_state, S2255_FW_LOADED_DSPWAIT);
557 return;
558
559 }
560
561 static int s2255_got_frame(struct s2255_vc *vc, int jpgsize)
562 {
563 struct s2255_buffer *buf;
564 struct s2255_dev *dev = to_s2255_dev(vc->vdev.v4l2_dev);
565 unsigned long flags = 0;
566 int rc = 0;
567 spin_lock_irqsave(&vc->qlock, flags);
568 if (list_empty(&vc->buf_list)) {
569 dprintk(dev, 1, "No active queue to serve\n");
570 rc = -1;
571 goto unlock;
572 }
573 buf = list_entry(vc->buf_list.next,
574 struct s2255_buffer, list);
575 list_del(&buf->list);
576 v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
577 s2255_fillbuff(vc, buf, jpgsize);
578 dprintk(dev, 2, "%s: [buf] [%p]\n", __func__, buf);
579 unlock:
580 spin_unlock_irqrestore(&vc->qlock, flags);
581 return rc;
582 }
583
584 static const struct s2255_fmt *format_by_fourcc(int fourcc)
585 {
586 unsigned int i;
587 for (i = 0; i < ARRAY_SIZE(formats); i++) {
588 if (-1 == formats[i].fourcc)
589 continue;
590 if (!jpeg_enable && ((formats[i].fourcc == V4L2_PIX_FMT_JPEG) ||
591 (formats[i].fourcc == V4L2_PIX_FMT_MJPEG)))
592 continue;
593 if (formats[i].fourcc == fourcc)
594 return formats + i;
595 }
596 return NULL;
597 }
598
599 /* video buffer vmalloc implementation based partly on VIVI driver which is
600 * Copyright (c) 2006 by
601 * Mauro Carvalho Chehab <mchehab--a.t--infradead.org>
602 * Ted Walther <ted--a.t--enumera.com>
603 * John Sokol <sokol--a.t--videotechnology.com>
604 * http://v4l.videotechnology.com/
605 *
606 */
607 static void s2255_fillbuff(struct s2255_vc *vc,
608 struct s2255_buffer *buf, int jpgsize)
609 {
610 int pos = 0;
611 const char *tmpbuf;
612 char *vbuf = vb2_plane_vaddr(&buf->vb, 0);
613 unsigned long last_frame;
614 struct s2255_dev *dev = vc->dev;
615
616 if (!vbuf)
617 return;
618 last_frame = vc->last_frame;
619 if (last_frame != -1) {
620 tmpbuf =
621 (const char *)vc->buffer.frame[last_frame].lpvbits;
622 switch (vc->fmt->fourcc) {
623 case V4L2_PIX_FMT_YUYV:
624 case V4L2_PIX_FMT_UYVY:
625 planar422p_to_yuv_packed((const unsigned char *)tmpbuf,
626 vbuf, vc->width,
627 vc->height,
628 vc->fmt->fourcc);
629 break;
630 case V4L2_PIX_FMT_GREY:
631 memcpy(vbuf, tmpbuf, vc->width * vc->height);
632 break;
633 case V4L2_PIX_FMT_JPEG:
634 case V4L2_PIX_FMT_MJPEG:
635 buf->vb.v4l2_buf.length = jpgsize;
636 memcpy(vbuf, tmpbuf, jpgsize);
637 break;
638 case V4L2_PIX_FMT_YUV422P:
639 memcpy(vbuf, tmpbuf,
640 vc->width * vc->height * 2);
641 break;
642 default:
643 pr_info("s2255: unknown format?\n");
644 }
645 vc->last_frame = -1;
646 } else {
647 pr_err("s2255: =======no frame\n");
648 return;
649 }
650 dprintk(dev, 2, "s2255fill at : Buffer 0x%08lx size= %d\n",
651 (unsigned long)vbuf, pos);
652 /* tell v4l buffer was filled */
653 buf->vb.v4l2_buf.field = vc->field;
654 buf->vb.v4l2_buf.sequence = vc->frame_count;
655 v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
656 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
657 }
658
659
660 /* ------------------------------------------------------------------
661 Videobuf operations
662 ------------------------------------------------------------------*/
663
664 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
665 unsigned int *nbuffers, unsigned int *nplanes,
666 unsigned int sizes[], void *alloc_ctxs[])
667 {
668 struct s2255_vc *vc = vb2_get_drv_priv(vq);
669 if (*nbuffers < S2255_MIN_BUFS)
670 *nbuffers = S2255_MIN_BUFS;
671 *nplanes = 1;
672 sizes[0] = vc->width * vc->height * (vc->fmt->depth >> 3);
673 return 0;
674 }
675
676 static int buffer_prepare(struct vb2_buffer *vb)
677 {
678 struct s2255_vc *vc = vb2_get_drv_priv(vb->vb2_queue);
679 struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
680 int w = vc->width;
681 int h = vc->height;
682 unsigned long size;
683
684 dprintk(vc->dev, 4, "%s\n", __func__);
685 if (vc->fmt == NULL)
686 return -EINVAL;
687
688 if ((w < norm_minw(vc)) ||
689 (w > norm_maxw(vc)) ||
690 (h < norm_minh(vc)) ||
691 (h > norm_maxh(vc))) {
692 dprintk(vc->dev, 4, "invalid buffer prepare\n");
693 return -EINVAL;
694 }
695 size = w * h * (vc->fmt->depth >> 3);
696 if (vb2_plane_size(vb, 0) < size) {
697 dprintk(vc->dev, 4, "invalid buffer prepare\n");
698 return -EINVAL;
699 }
700
701 vb2_set_plane_payload(&buf->vb, 0, size);
702 return 0;
703 }
704
705 static void buffer_queue(struct vb2_buffer *vb)
706 {
707 struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
708 struct s2255_vc *vc = vb2_get_drv_priv(vb->vb2_queue);
709 unsigned long flags = 0;
710 dprintk(vc->dev, 1, "%s\n", __func__);
711 spin_lock_irqsave(&vc->qlock, flags);
712 list_add_tail(&buf->list, &vc->buf_list);
713 spin_unlock_irqrestore(&vc->qlock, flags);
714 }
715
716 static int start_streaming(struct vb2_queue *vq, unsigned int count);
717 static void stop_streaming(struct vb2_queue *vq);
718
719 static struct vb2_ops s2255_video_qops = {
720 .queue_setup = queue_setup,
721 .buf_prepare = buffer_prepare,
722 .buf_queue = buffer_queue,
723 .start_streaming = start_streaming,
724 .stop_streaming = stop_streaming,
725 .wait_prepare = vb2_ops_wait_prepare,
726 .wait_finish = vb2_ops_wait_finish,
727 };
728
729 static int vidioc_querycap(struct file *file, void *priv,
730 struct v4l2_capability *cap)
731 {
732 struct s2255_vc *vc = video_drvdata(file);
733 struct s2255_dev *dev = vc->dev;
734
735 strlcpy(cap->driver, "s2255", sizeof(cap->driver));
736 strlcpy(cap->card, "s2255", sizeof(cap->card));
737 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
738 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
739 V4L2_CAP_READWRITE;
740 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
741 return 0;
742 }
743
744 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
745 struct v4l2_fmtdesc *f)
746 {
747 int index = f->index;
748
749 if (index >= ARRAY_SIZE(formats))
750 return -EINVAL;
751 if (!jpeg_enable && ((formats[index].fourcc == V4L2_PIX_FMT_JPEG) ||
752 (formats[index].fourcc == V4L2_PIX_FMT_MJPEG)))
753 return -EINVAL;
754 strlcpy(f->description, formats[index].name, sizeof(f->description));
755 f->pixelformat = formats[index].fourcc;
756 return 0;
757 }
758
759 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
760 struct v4l2_format *f)
761 {
762 struct s2255_vc *vc = video_drvdata(file);
763 int is_ntsc = vc->std & V4L2_STD_525_60;
764
765 f->fmt.pix.width = vc->width;
766 f->fmt.pix.height = vc->height;
767 if (f->fmt.pix.height >=
768 (is_ntsc ? NUM_LINES_1CIFS_NTSC : NUM_LINES_1CIFS_PAL) * 2)
769 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
770 else
771 f->fmt.pix.field = V4L2_FIELD_TOP;
772 f->fmt.pix.pixelformat = vc->fmt->fourcc;
773 f->fmt.pix.bytesperline = f->fmt.pix.width * (vc->fmt->depth >> 3);
774 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
775 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
776 f->fmt.pix.priv = 0;
777 return 0;
778 }
779
780 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
781 struct v4l2_format *f)
782 {
783 const struct s2255_fmt *fmt;
784 enum v4l2_field field;
785 struct s2255_vc *vc = video_drvdata(file);
786 int is_ntsc = vc->std & V4L2_STD_525_60;
787
788 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
789
790 if (fmt == NULL)
791 return -EINVAL;
792
793 field = f->fmt.pix.field;
794
795 dprintk(vc->dev, 50, "%s NTSC: %d suggested width: %d, height: %d\n",
796 __func__, is_ntsc, f->fmt.pix.width, f->fmt.pix.height);
797 if (is_ntsc) {
798 /* NTSC */
799 if (f->fmt.pix.height >= NUM_LINES_1CIFS_NTSC * 2) {
800 f->fmt.pix.height = NUM_LINES_1CIFS_NTSC * 2;
801 field = V4L2_FIELD_INTERLACED;
802 } else {
803 f->fmt.pix.height = NUM_LINES_1CIFS_NTSC;
804 field = V4L2_FIELD_TOP;
805 }
806 if (f->fmt.pix.width >= LINE_SZ_4CIFS_NTSC)
807 f->fmt.pix.width = LINE_SZ_4CIFS_NTSC;
808 else if (f->fmt.pix.width >= LINE_SZ_2CIFS_NTSC)
809 f->fmt.pix.width = LINE_SZ_2CIFS_NTSC;
810 else if (f->fmt.pix.width >= LINE_SZ_1CIFS_NTSC)
811 f->fmt.pix.width = LINE_SZ_1CIFS_NTSC;
812 else
813 f->fmt.pix.width = LINE_SZ_1CIFS_NTSC;
814 } else {
815 /* PAL */
816 if (f->fmt.pix.height >= NUM_LINES_1CIFS_PAL * 2) {
817 f->fmt.pix.height = NUM_LINES_1CIFS_PAL * 2;
818 field = V4L2_FIELD_INTERLACED;
819 } else {
820 f->fmt.pix.height = NUM_LINES_1CIFS_PAL;
821 field = V4L2_FIELD_TOP;
822 }
823 if (f->fmt.pix.width >= LINE_SZ_4CIFS_PAL)
824 f->fmt.pix.width = LINE_SZ_4CIFS_PAL;
825 else if (f->fmt.pix.width >= LINE_SZ_2CIFS_PAL)
826 f->fmt.pix.width = LINE_SZ_2CIFS_PAL;
827 else if (f->fmt.pix.width >= LINE_SZ_1CIFS_PAL)
828 f->fmt.pix.width = LINE_SZ_1CIFS_PAL;
829 else
830 f->fmt.pix.width = LINE_SZ_1CIFS_PAL;
831 }
832 f->fmt.pix.field = field;
833 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
834 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
835 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
836 f->fmt.pix.priv = 0;
837 dprintk(vc->dev, 50, "%s: set width %d height %d field %d\n", __func__,
838 f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.field);
839 return 0;
840 }
841
842 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
843 struct v4l2_format *f)
844 {
845 struct s2255_vc *vc = video_drvdata(file);
846 const struct s2255_fmt *fmt;
847 struct vb2_queue *q = &vc->vb_vidq;
848 struct s2255_mode mode;
849 int ret;
850
851 ret = vidioc_try_fmt_vid_cap(file, vc, f);
852
853 if (ret < 0)
854 return ret;
855
856 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
857
858 if (fmt == NULL)
859 return -EINVAL;
860
861 if (vb2_is_busy(q)) {
862 dprintk(vc->dev, 1, "queue busy\n");
863 return -EBUSY;
864 }
865
866 mode = vc->mode;
867 vc->fmt = fmt;
868 vc->width = f->fmt.pix.width;
869 vc->height = f->fmt.pix.height;
870 vc->field = f->fmt.pix.field;
871 if (vc->width > norm_minw(vc)) {
872 if (vc->height > norm_minh(vc)) {
873 if (vc->cap_parm.capturemode &
874 V4L2_MODE_HIGHQUALITY)
875 mode.scale = SCALE_4CIFSI;
876 else
877 mode.scale = SCALE_4CIFS;
878 } else
879 mode.scale = SCALE_2CIFS;
880
881 } else {
882 mode.scale = SCALE_1CIFS;
883 }
884 /* color mode */
885 switch (vc->fmt->fourcc) {
886 case V4L2_PIX_FMT_GREY:
887 mode.color &= ~MASK_COLOR;
888 mode.color |= COLOR_Y8;
889 break;
890 case V4L2_PIX_FMT_JPEG:
891 case V4L2_PIX_FMT_MJPEG:
892 mode.color &= ~MASK_COLOR;
893 mode.color |= COLOR_JPG;
894 mode.color |= (vc->jpegqual << 8);
895 break;
896 case V4L2_PIX_FMT_YUV422P:
897 mode.color &= ~MASK_COLOR;
898 mode.color |= COLOR_YUVPL;
899 break;
900 case V4L2_PIX_FMT_YUYV:
901 case V4L2_PIX_FMT_UYVY:
902 default:
903 mode.color &= ~MASK_COLOR;
904 mode.color |= COLOR_YUVPK;
905 break;
906 }
907 if ((mode.color & MASK_COLOR) != (vc->mode.color & MASK_COLOR))
908 mode.restart = 1;
909 else if (mode.scale != vc->mode.scale)
910 mode.restart = 1;
911 else if (mode.format != vc->mode.format)
912 mode.restart = 1;
913 vc->mode = mode;
914 (void) s2255_set_mode(vc, &mode);
915 return 0;
916 }
917
918
919 /* write to the configuration pipe, synchronously */
920 static int s2255_write_config(struct usb_device *udev, unsigned char *pbuf,
921 int size)
922 {
923 int pipe;
924 int done;
925 long retval = -1;
926 if (udev) {
927 pipe = usb_sndbulkpipe(udev, S2255_CONFIG_EP);
928 retval = usb_bulk_msg(udev, pipe, pbuf, size, &done, 500);
929 }
930 return retval;
931 }
932
933 static u32 get_transfer_size(struct s2255_mode *mode)
934 {
935 int linesPerFrame = LINE_SZ_DEF;
936 int pixelsPerLine = NUM_LINES_DEF;
937 u32 outImageSize;
938 u32 usbInSize;
939 unsigned int mask_mult;
940
941 if (mode == NULL)
942 return 0;
943
944 if (mode->format == FORMAT_NTSC) {
945 switch (mode->scale) {
946 case SCALE_4CIFS:
947 case SCALE_4CIFSI:
948 linesPerFrame = NUM_LINES_4CIFS_NTSC * 2;
949 pixelsPerLine = LINE_SZ_4CIFS_NTSC;
950 break;
951 case SCALE_2CIFS:
952 linesPerFrame = NUM_LINES_2CIFS_NTSC;
953 pixelsPerLine = LINE_SZ_2CIFS_NTSC;
954 break;
955 case SCALE_1CIFS:
956 linesPerFrame = NUM_LINES_1CIFS_NTSC;
957 pixelsPerLine = LINE_SZ_1CIFS_NTSC;
958 break;
959 default:
960 break;
961 }
962 } else if (mode->format == FORMAT_PAL) {
963 switch (mode->scale) {
964 case SCALE_4CIFS:
965 case SCALE_4CIFSI:
966 linesPerFrame = NUM_LINES_4CIFS_PAL * 2;
967 pixelsPerLine = LINE_SZ_4CIFS_PAL;
968 break;
969 case SCALE_2CIFS:
970 linesPerFrame = NUM_LINES_2CIFS_PAL;
971 pixelsPerLine = LINE_SZ_2CIFS_PAL;
972 break;
973 case SCALE_1CIFS:
974 linesPerFrame = NUM_LINES_1CIFS_PAL;
975 pixelsPerLine = LINE_SZ_1CIFS_PAL;
976 break;
977 default:
978 break;
979 }
980 }
981 outImageSize = linesPerFrame * pixelsPerLine;
982 if ((mode->color & MASK_COLOR) != COLOR_Y8) {
983 /* 2 bytes/pixel if not monochrome */
984 outImageSize *= 2;
985 }
986
987 /* total bytes to send including prefix and 4K padding;
988 must be a multiple of USB_READ_SIZE */
989 usbInSize = outImageSize + PREFIX_SIZE; /* always send prefix */
990 mask_mult = 0xffffffffUL - DEF_USB_BLOCK + 1;
991 /* if size not a multiple of USB_READ_SIZE */
992 if (usbInSize & ~mask_mult)
993 usbInSize = (usbInSize & mask_mult) + (DEF_USB_BLOCK);
994 return usbInSize;
995 }
996
997 static void s2255_print_cfg(struct s2255_dev *sdev, struct s2255_mode *mode)
998 {
999 struct device *dev = &sdev->udev->dev;
1000 dev_info(dev, "------------------------------------------------\n");
1001 dev_info(dev, "format: %d\nscale %d\n", mode->format, mode->scale);
1002 dev_info(dev, "fdec: %d\ncolor %d\n", mode->fdec, mode->color);
1003 dev_info(dev, "bright: 0x%x\n", mode->bright);
1004 dev_info(dev, "------------------------------------------------\n");
1005 }
1006
1007 /*
1008 * set mode is the function which controls the DSP.
1009 * the restart parameter in struct s2255_mode should be set whenever
1010 * the image size could change via color format, video system or image
1011 * size.
1012 * When the restart parameter is set, we sleep for ONE frame to allow the
1013 * DSP time to get the new frame
1014 */
1015 static int s2255_set_mode(struct s2255_vc *vc,
1016 struct s2255_mode *mode)
1017 {
1018 int res;
1019 unsigned long chn_rev;
1020 struct s2255_dev *dev = to_s2255_dev(vc->vdev.v4l2_dev);
1021 int i;
1022 __le32 *buffer = dev->cmdbuf;
1023
1024 mutex_lock(&dev->cmdlock);
1025 chn_rev = G_chnmap[vc->idx];
1026 dprintk(dev, 3, "%s channel: %d\n", __func__, vc->idx);
1027 /* if JPEG, set the quality */
1028 if ((mode->color & MASK_COLOR) == COLOR_JPG) {
1029 mode->color &= ~MASK_COLOR;
1030 mode->color |= COLOR_JPG;
1031 mode->color &= ~MASK_JPG_QUALITY;
1032 mode->color |= (vc->jpegqual << 8);
1033 }
1034 /* save the mode */
1035 vc->mode = *mode;
1036 vc->req_image_size = get_transfer_size(mode);
1037 dprintk(dev, 1, "%s: reqsize %ld\n", __func__, vc->req_image_size);
1038 /* set the mode */
1039 buffer[0] = IN_DATA_TOKEN;
1040 buffer[1] = (__le32) cpu_to_le32(chn_rev);
1041 buffer[2] = CMD_SET_MODE;
1042 for (i = 0; i < sizeof(struct s2255_mode) / sizeof(u32); i++)
1043 buffer[3 + i] = cpu_to_le32(((u32 *)&vc->mode)[i]);
1044 vc->setmode_ready = 0;
1045 res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
1046 if (debug)
1047 s2255_print_cfg(dev, mode);
1048 /* wait at least 3 frames before continuing */
1049 if (mode->restart) {
1050 wait_event_timeout(vc->wait_setmode,
1051 (vc->setmode_ready != 0),
1052 msecs_to_jiffies(S2255_SETMODE_TIMEOUT));
1053 if (vc->setmode_ready != 1) {
1054 dprintk(dev, 0, "s2255: no set mode response\n");
1055 res = -EFAULT;
1056 }
1057 }
1058 /* clear the restart flag */
1059 vc->mode.restart = 0;
1060 dprintk(dev, 1, "%s chn %d, result: %d\n", __func__, vc->idx, res);
1061 mutex_unlock(&dev->cmdlock);
1062 return res;
1063 }
1064
1065 static int s2255_cmd_status(struct s2255_vc *vc, u32 *pstatus)
1066 {
1067 int res;
1068 u32 chn_rev;
1069 struct s2255_dev *dev = to_s2255_dev(vc->vdev.v4l2_dev);
1070 __le32 *buffer = dev->cmdbuf;
1071
1072 mutex_lock(&dev->cmdlock);
1073 chn_rev = G_chnmap[vc->idx];
1074 dprintk(dev, 4, "%s chan %d\n", __func__, vc->idx);
1075 /* form the get vid status command */
1076 buffer[0] = IN_DATA_TOKEN;
1077 buffer[1] = (__le32) cpu_to_le32(chn_rev);
1078 buffer[2] = CMD_STATUS;
1079 *pstatus = 0;
1080 vc->vidstatus_ready = 0;
1081 res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
1082 wait_event_timeout(vc->wait_vidstatus,
1083 (vc->vidstatus_ready != 0),
1084 msecs_to_jiffies(S2255_VIDSTATUS_TIMEOUT));
1085 if (vc->vidstatus_ready != 1) {
1086 dprintk(dev, 0, "s2255: no vidstatus response\n");
1087 res = -EFAULT;
1088 }
1089 *pstatus = vc->vidstatus;
1090 dprintk(dev, 4, "%s, vid status %d\n", __func__, *pstatus);
1091 mutex_unlock(&dev->cmdlock);
1092 return res;
1093 }
1094
1095 static int start_streaming(struct vb2_queue *vq, unsigned int count)
1096 {
1097 struct s2255_vc *vc = vb2_get_drv_priv(vq);
1098 int j;
1099
1100 vc->last_frame = -1;
1101 vc->bad_payload = 0;
1102 vc->cur_frame = 0;
1103 vc->frame_count = 0;
1104 for (j = 0; j < SYS_FRAMES; j++) {
1105 vc->buffer.frame[j].ulState = S2255_READ_IDLE;
1106 vc->buffer.frame[j].cur_size = 0;
1107 }
1108 return s2255_start_acquire(vc);
1109 }
1110
1111 /* abort streaming and wait for last buffer */
1112 static void stop_streaming(struct vb2_queue *vq)
1113 {
1114 struct s2255_vc *vc = vb2_get_drv_priv(vq);
1115 struct s2255_buffer *buf, *node;
1116 unsigned long flags;
1117 (void) s2255_stop_acquire(vc);
1118 spin_lock_irqsave(&vc->qlock, flags);
1119 list_for_each_entry_safe(buf, node, &vc->buf_list, list) {
1120 list_del(&buf->list);
1121 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
1122 dprintk(vc->dev, 2, "[%p/%d] done\n",
1123 buf, buf->vb.v4l2_buf.index);
1124 }
1125 spin_unlock_irqrestore(&vc->qlock, flags);
1126 }
1127
1128 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id i)
1129 {
1130 struct s2255_vc *vc = video_drvdata(file);
1131 struct s2255_mode mode;
1132 struct vb2_queue *q = &vc->vb_vidq;
1133
1134 /*
1135 * Changing the standard implies a format change, which is not allowed
1136 * while buffers for use with streaming have already been allocated.
1137 */
1138 if (vb2_is_busy(q))
1139 return -EBUSY;
1140
1141 mode = vc->mode;
1142 if (i & V4L2_STD_525_60) {
1143 dprintk(vc->dev, 4, "%s 60 Hz\n", __func__);
1144 /* if changing format, reset frame decimation/intervals */
1145 if (mode.format != FORMAT_NTSC) {
1146 mode.restart = 1;
1147 mode.format = FORMAT_NTSC;
1148 mode.fdec = FDEC_1;
1149 vc->width = LINE_SZ_4CIFS_NTSC;
1150 vc->height = NUM_LINES_4CIFS_NTSC * 2;
1151 }
1152 } else if (i & V4L2_STD_625_50) {
1153 dprintk(vc->dev, 4, "%s 50 Hz\n", __func__);
1154 if (mode.format != FORMAT_PAL) {
1155 mode.restart = 1;
1156 mode.format = FORMAT_PAL;
1157 mode.fdec = FDEC_1;
1158 vc->width = LINE_SZ_4CIFS_PAL;
1159 vc->height = NUM_LINES_4CIFS_PAL * 2;
1160 }
1161 } else
1162 return -EINVAL;
1163 vc->std = i;
1164 if (mode.restart)
1165 s2255_set_mode(vc, &mode);
1166 return 0;
1167 }
1168
1169 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *i)
1170 {
1171 struct s2255_vc *vc = video_drvdata(file);
1172
1173 *i = vc->std;
1174 return 0;
1175 }
1176
1177 /* Sensoray 2255 is a multiple channel capture device.
1178 It does not have a "crossbar" of inputs.
1179 We use one V4L device per channel. The user must
1180 be aware that certain combinations are not allowed.
1181 For instance, you cannot do full FPS on more than 2 channels(2 videodevs)
1182 at once in color(you can do full fps on 4 channels with greyscale.
1183 */
1184 static int vidioc_enum_input(struct file *file, void *priv,
1185 struct v4l2_input *inp)
1186 {
1187 struct s2255_vc *vc = video_drvdata(file);
1188 struct s2255_dev *dev = vc->dev;
1189 u32 status = 0;
1190
1191 if (inp->index != 0)
1192 return -EINVAL;
1193 inp->type = V4L2_INPUT_TYPE_CAMERA;
1194 inp->std = S2255_NORMS;
1195 inp->status = 0;
1196 if (dev->dsp_fw_ver >= S2255_MIN_DSP_STATUS) {
1197 int rc;
1198 rc = s2255_cmd_status(vc, &status);
1199 dprintk(dev, 4, "s2255_cmd_status rc: %d status %x\n",
1200 rc, status);
1201 if (rc == 0)
1202 inp->status = (status & 0x01) ? 0
1203 : V4L2_IN_ST_NO_SIGNAL;
1204 }
1205 switch (dev->pid) {
1206 case 0x2255:
1207 default:
1208 strlcpy(inp->name, "Composite", sizeof(inp->name));
1209 break;
1210 case 0x2257:
1211 strlcpy(inp->name, (vc->idx < 2) ? "Composite" : "S-Video",
1212 sizeof(inp->name));
1213 break;
1214 }
1215 return 0;
1216 }
1217
1218 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1219 {
1220 *i = 0;
1221 return 0;
1222 }
1223 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1224 {
1225 if (i > 0)
1226 return -EINVAL;
1227 return 0;
1228 }
1229
1230 static int s2255_s_ctrl(struct v4l2_ctrl *ctrl)
1231 {
1232 struct s2255_vc *vc =
1233 container_of(ctrl->handler, struct s2255_vc, hdl);
1234 struct s2255_mode mode;
1235 mode = vc->mode;
1236 /* update the mode to the corresponding value */
1237 switch (ctrl->id) {
1238 case V4L2_CID_BRIGHTNESS:
1239 mode.bright = ctrl->val;
1240 break;
1241 case V4L2_CID_CONTRAST:
1242 mode.contrast = ctrl->val;
1243 break;
1244 case V4L2_CID_HUE:
1245 mode.hue = ctrl->val;
1246 break;
1247 case V4L2_CID_SATURATION:
1248 mode.saturation = ctrl->val;
1249 break;
1250 case V4L2_CID_S2255_COLORFILTER:
1251 mode.color &= ~MASK_INPUT_TYPE;
1252 mode.color |= !ctrl->val << 16;
1253 break;
1254 case V4L2_CID_JPEG_COMPRESSION_QUALITY:
1255 vc->jpegqual = ctrl->val;
1256 return 0;
1257 default:
1258 return -EINVAL;
1259 }
1260 mode.restart = 0;
1261 /* set mode here. Note: stream does not need restarted.
1262 some V4L programs restart stream unnecessarily
1263 after a s_crtl.
1264 */
1265 s2255_set_mode(vc, &mode);
1266 return 0;
1267 }
1268
1269 static int vidioc_g_jpegcomp(struct file *file, void *priv,
1270 struct v4l2_jpegcompression *jc)
1271 {
1272 struct s2255_vc *vc = video_drvdata(file);
1273
1274 memset(jc, 0, sizeof(*jc));
1275 jc->quality = vc->jpegqual;
1276 dprintk(vc->dev, 2, "%s: quality %d\n", __func__, jc->quality);
1277 return 0;
1278 }
1279
1280 static int vidioc_s_jpegcomp(struct file *file, void *priv,
1281 const struct v4l2_jpegcompression *jc)
1282 {
1283 struct s2255_vc *vc = video_drvdata(file);
1284
1285 if (jc->quality < 0 || jc->quality > 100)
1286 return -EINVAL;
1287 v4l2_ctrl_s_ctrl(vc->jpegqual_ctrl, jc->quality);
1288 dprintk(vc->dev, 2, "%s: quality %d\n", __func__, jc->quality);
1289 return 0;
1290 }
1291
1292 static int vidioc_g_parm(struct file *file, void *priv,
1293 struct v4l2_streamparm *sp)
1294 {
1295 __u32 def_num, def_dem;
1296 struct s2255_vc *vc = video_drvdata(file);
1297
1298 if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1299 return -EINVAL;
1300 sp->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1301 sp->parm.capture.capturemode = vc->cap_parm.capturemode;
1302 sp->parm.capture.readbuffers = S2255_MIN_BUFS;
1303 def_num = (vc->mode.format == FORMAT_NTSC) ? 1001 : 1000;
1304 def_dem = (vc->mode.format == FORMAT_NTSC) ? 30000 : 25000;
1305 sp->parm.capture.timeperframe.denominator = def_dem;
1306 switch (vc->mode.fdec) {
1307 default:
1308 case FDEC_1:
1309 sp->parm.capture.timeperframe.numerator = def_num;
1310 break;
1311 case FDEC_2:
1312 sp->parm.capture.timeperframe.numerator = def_num * 2;
1313 break;
1314 case FDEC_3:
1315 sp->parm.capture.timeperframe.numerator = def_num * 3;
1316 break;
1317 case FDEC_5:
1318 sp->parm.capture.timeperframe.numerator = def_num * 5;
1319 break;
1320 }
1321 dprintk(vc->dev, 4, "%s capture mode, %d timeperframe %d/%d\n",
1322 __func__,
1323 sp->parm.capture.capturemode,
1324 sp->parm.capture.timeperframe.numerator,
1325 sp->parm.capture.timeperframe.denominator);
1326 return 0;
1327 }
1328
1329 static int vidioc_s_parm(struct file *file, void *priv,
1330 struct v4l2_streamparm *sp)
1331 {
1332 struct s2255_vc *vc = video_drvdata(file);
1333 struct s2255_mode mode;
1334 int fdec = FDEC_1;
1335 __u32 def_num, def_dem;
1336 if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1337 return -EINVAL;
1338 mode = vc->mode;
1339 /* high quality capture mode requires a stream restart */
1340 if ((vc->cap_parm.capturemode != sp->parm.capture.capturemode)
1341 && vb2_is_streaming(&vc->vb_vidq))
1342 return -EBUSY;
1343 def_num = (mode.format == FORMAT_NTSC) ? 1001 : 1000;
1344 def_dem = (mode.format == FORMAT_NTSC) ? 30000 : 25000;
1345 if (def_dem != sp->parm.capture.timeperframe.denominator)
1346 sp->parm.capture.timeperframe.numerator = def_num;
1347 else if (sp->parm.capture.timeperframe.numerator <= def_num)
1348 sp->parm.capture.timeperframe.numerator = def_num;
1349 else if (sp->parm.capture.timeperframe.numerator <= (def_num * 2)) {
1350 sp->parm.capture.timeperframe.numerator = def_num * 2;
1351 fdec = FDEC_2;
1352 } else if (sp->parm.capture.timeperframe.numerator <= (def_num * 3)) {
1353 sp->parm.capture.timeperframe.numerator = def_num * 3;
1354 fdec = FDEC_3;
1355 } else {
1356 sp->parm.capture.timeperframe.numerator = def_num * 5;
1357 fdec = FDEC_5;
1358 }
1359 mode.fdec = fdec;
1360 sp->parm.capture.timeperframe.denominator = def_dem;
1361 sp->parm.capture.readbuffers = S2255_MIN_BUFS;
1362 s2255_set_mode(vc, &mode);
1363 dprintk(vc->dev, 4, "%s capture mode, %d timeperframe %d/%d, fdec %d\n",
1364 __func__,
1365 sp->parm.capture.capturemode,
1366 sp->parm.capture.timeperframe.numerator,
1367 sp->parm.capture.timeperframe.denominator, fdec);
1368 return 0;
1369 }
1370
1371 #define NUM_SIZE_ENUMS 3
1372 static const struct v4l2_frmsize_discrete ntsc_sizes[] = {
1373 { 640, 480 },
1374 { 640, 240 },
1375 { 320, 240 },
1376 };
1377 static const struct v4l2_frmsize_discrete pal_sizes[] = {
1378 { 704, 576 },
1379 { 704, 288 },
1380 { 352, 288 },
1381 };
1382
1383 static int vidioc_enum_framesizes(struct file *file, void *priv,
1384 struct v4l2_frmsizeenum *fe)
1385 {
1386 struct s2255_vc *vc = video_drvdata(file);
1387 int is_ntsc = vc->std & V4L2_STD_525_60;
1388 const struct s2255_fmt *fmt;
1389
1390 if (fe->index >= NUM_SIZE_ENUMS)
1391 return -EINVAL;
1392
1393 fmt = format_by_fourcc(fe->pixel_format);
1394 if (fmt == NULL)
1395 return -EINVAL;
1396 fe->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1397 fe->discrete = is_ntsc ? ntsc_sizes[fe->index] : pal_sizes[fe->index];
1398 return 0;
1399 }
1400
1401 static int vidioc_enum_frameintervals(struct file *file, void *priv,
1402 struct v4l2_frmivalenum *fe)
1403 {
1404 struct s2255_vc *vc = video_drvdata(file);
1405 const struct s2255_fmt *fmt;
1406 const struct v4l2_frmsize_discrete *sizes;
1407 int is_ntsc = vc->std & V4L2_STD_525_60;
1408 #define NUM_FRAME_ENUMS 4
1409 int frm_dec[NUM_FRAME_ENUMS] = {1, 2, 3, 5};
1410 int i;
1411
1412 if (fe->index >= NUM_FRAME_ENUMS)
1413 return -EINVAL;
1414
1415 fmt = format_by_fourcc(fe->pixel_format);
1416 if (fmt == NULL)
1417 return -EINVAL;
1418
1419 sizes = is_ntsc ? ntsc_sizes : pal_sizes;
1420 for (i = 0; i < NUM_SIZE_ENUMS; i++, sizes++)
1421 if (fe->width == sizes->width &&
1422 fe->height == sizes->height)
1423 break;
1424 if (i == NUM_SIZE_ENUMS)
1425 return -EINVAL;
1426
1427 fe->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1428 fe->discrete.denominator = is_ntsc ? 30000 : 25000;
1429 fe->discrete.numerator = (is_ntsc ? 1001 : 1000) * frm_dec[fe->index];
1430 dprintk(vc->dev, 4, "%s discrete %d/%d\n", __func__,
1431 fe->discrete.numerator,
1432 fe->discrete.denominator);
1433 return 0;
1434 }
1435
1436 static int s2255_open(struct file *file)
1437 {
1438 struct s2255_vc *vc = video_drvdata(file);
1439 struct s2255_dev *dev = vc->dev;
1440 int state;
1441 int rc = 0;
1442
1443 rc = v4l2_fh_open(file);
1444 if (rc != 0)
1445 return rc;
1446
1447 dprintk(dev, 1, "s2255: %s\n", __func__);
1448 state = atomic_read(&dev->fw_data->fw_state);
1449 switch (state) {
1450 case S2255_FW_DISCONNECTING:
1451 return -ENODEV;
1452 case S2255_FW_FAILED:
1453 s2255_dev_err(&dev->udev->dev,
1454 "firmware load failed. retrying.\n");
1455 s2255_fwload_start(dev, 1);
1456 wait_event_timeout(dev->fw_data->wait_fw,
1457 ((atomic_read(&dev->fw_data->fw_state)
1458 == S2255_FW_SUCCESS) ||
1459 (atomic_read(&dev->fw_data->fw_state)
1460 == S2255_FW_DISCONNECTING)),
1461 msecs_to_jiffies(S2255_LOAD_TIMEOUT));
1462 /* state may have changed, re-read */
1463 state = atomic_read(&dev->fw_data->fw_state);
1464 break;
1465 case S2255_FW_NOTLOADED:
1466 case S2255_FW_LOADED_DSPWAIT:
1467 /* give S2255_LOAD_TIMEOUT time for firmware to load in case
1468 driver loaded and then device immediately opened */
1469 pr_info("%s waiting for firmware load\n", __func__);
1470 wait_event_timeout(dev->fw_data->wait_fw,
1471 ((atomic_read(&dev->fw_data->fw_state)
1472 == S2255_FW_SUCCESS) ||
1473 (atomic_read(&dev->fw_data->fw_state)
1474 == S2255_FW_DISCONNECTING)),
1475 msecs_to_jiffies(S2255_LOAD_TIMEOUT));
1476 /* state may have changed, re-read */
1477 state = atomic_read(&dev->fw_data->fw_state);
1478 break;
1479 case S2255_FW_SUCCESS:
1480 default:
1481 break;
1482 }
1483 /* state may have changed in above switch statement */
1484 switch (state) {
1485 case S2255_FW_SUCCESS:
1486 break;
1487 case S2255_FW_FAILED:
1488 pr_info("2255 firmware load failed.\n");
1489 return -ENODEV;
1490 case S2255_FW_DISCONNECTING:
1491 pr_info("%s: disconnecting\n", __func__);
1492 return -ENODEV;
1493 case S2255_FW_LOADED_DSPWAIT:
1494 case S2255_FW_NOTLOADED:
1495 pr_info("%s: firmware not loaded, please retry\n",
1496 __func__);
1497 /*
1498 * Timeout on firmware load means device unusable.
1499 * Set firmware failure state.
1500 * On next s2255_open the firmware will be reloaded.
1501 */
1502 atomic_set(&dev->fw_data->fw_state,
1503 S2255_FW_FAILED);
1504 return -EAGAIN;
1505 default:
1506 pr_info("%s: unknown state\n", __func__);
1507 return -EFAULT;
1508 }
1509 if (!vc->configured) {
1510 /* configure channel to default state */
1511 vc->fmt = &formats[0];
1512 s2255_set_mode(vc, &vc->mode);
1513 vc->configured = 1;
1514 }
1515 return 0;
1516 }
1517
1518 static void s2255_destroy(struct s2255_dev *dev)
1519 {
1520 dprintk(dev, 1, "%s", __func__);
1521 /* board shutdown stops the read pipe if it is running */
1522 s2255_board_shutdown(dev);
1523 /* make sure firmware still not trying to load */
1524 del_timer(&dev->timer); /* only started in .probe and .open */
1525 if (dev->fw_data->fw_urb) {
1526 usb_kill_urb(dev->fw_data->fw_urb);
1527 usb_free_urb(dev->fw_data->fw_urb);
1528 dev->fw_data->fw_urb = NULL;
1529 }
1530 release_firmware(dev->fw_data->fw);
1531 kfree(dev->fw_data->pfw_data);
1532 kfree(dev->fw_data);
1533 /* reset the DSP so firmware can be reloaded next time */
1534 s2255_reset_dsppower(dev);
1535 mutex_destroy(&dev->lock);
1536 usb_put_dev(dev->udev);
1537 v4l2_device_unregister(&dev->v4l2_dev);
1538 kfree(dev->cmdbuf);
1539 kfree(dev);
1540 }
1541
1542 static const struct v4l2_file_operations s2255_fops_v4l = {
1543 .owner = THIS_MODULE,
1544 .open = s2255_open,
1545 .release = vb2_fop_release,
1546 .poll = vb2_fop_poll,
1547 .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1548 .mmap = vb2_fop_mmap,
1549 .read = vb2_fop_read,
1550 };
1551
1552 static const struct v4l2_ioctl_ops s2255_ioctl_ops = {
1553 .vidioc_querycap = vidioc_querycap,
1554 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1555 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1556 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1557 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1558 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1559 .vidioc_querybuf = vb2_ioctl_querybuf,
1560 .vidioc_qbuf = vb2_ioctl_qbuf,
1561 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1562 .vidioc_s_std = vidioc_s_std,
1563 .vidioc_g_std = vidioc_g_std,
1564 .vidioc_enum_input = vidioc_enum_input,
1565 .vidioc_g_input = vidioc_g_input,
1566 .vidioc_s_input = vidioc_s_input,
1567 .vidioc_streamon = vb2_ioctl_streamon,
1568 .vidioc_streamoff = vb2_ioctl_streamoff,
1569 .vidioc_s_jpegcomp = vidioc_s_jpegcomp,
1570 .vidioc_g_jpegcomp = vidioc_g_jpegcomp,
1571 .vidioc_s_parm = vidioc_s_parm,
1572 .vidioc_g_parm = vidioc_g_parm,
1573 .vidioc_enum_framesizes = vidioc_enum_framesizes,
1574 .vidioc_enum_frameintervals = vidioc_enum_frameintervals,
1575 .vidioc_log_status = v4l2_ctrl_log_status,
1576 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1577 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1578 };
1579
1580 static void s2255_video_device_release(struct video_device *vdev)
1581 {
1582 struct s2255_dev *dev = to_s2255_dev(vdev->v4l2_dev);
1583 struct s2255_vc *vc =
1584 container_of(vdev, struct s2255_vc, vdev);
1585
1586 dprintk(dev, 4, "%s, chnls: %d\n", __func__,
1587 atomic_read(&dev->num_channels));
1588
1589 v4l2_ctrl_handler_free(&vc->hdl);
1590
1591 if (atomic_dec_and_test(&dev->num_channels))
1592 s2255_destroy(dev);
1593 return;
1594 }
1595
1596 static struct video_device template = {
1597 .name = "s2255v",
1598 .fops = &s2255_fops_v4l,
1599 .ioctl_ops = &s2255_ioctl_ops,
1600 .release = s2255_video_device_release,
1601 .tvnorms = S2255_NORMS,
1602 };
1603
1604 static const struct v4l2_ctrl_ops s2255_ctrl_ops = {
1605 .s_ctrl = s2255_s_ctrl,
1606 };
1607
1608 static const struct v4l2_ctrl_config color_filter_ctrl = {
1609 .ops = &s2255_ctrl_ops,
1610 .name = "Color Filter",
1611 .id = V4L2_CID_S2255_COLORFILTER,
1612 .type = V4L2_CTRL_TYPE_BOOLEAN,
1613 .max = 1,
1614 .step = 1,
1615 .def = 1,
1616 };
1617
1618 static int s2255_probe_v4l(struct s2255_dev *dev)
1619 {
1620 int ret;
1621 int i;
1622 int cur_nr = video_nr;
1623 struct s2255_vc *vc;
1624 struct vb2_queue *q;
1625
1626 ret = v4l2_device_register(&dev->interface->dev, &dev->v4l2_dev);
1627 if (ret)
1628 return ret;
1629 /* initialize all video 4 linux */
1630 /* register 4 video devices */
1631 for (i = 0; i < MAX_CHANNELS; i++) {
1632 vc = &dev->vc[i];
1633 INIT_LIST_HEAD(&vc->buf_list);
1634
1635 v4l2_ctrl_handler_init(&vc->hdl, 6);
1636 v4l2_ctrl_new_std(&vc->hdl, &s2255_ctrl_ops,
1637 V4L2_CID_BRIGHTNESS, -127, 127, 1, DEF_BRIGHT);
1638 v4l2_ctrl_new_std(&vc->hdl, &s2255_ctrl_ops,
1639 V4L2_CID_CONTRAST, 0, 255, 1, DEF_CONTRAST);
1640 v4l2_ctrl_new_std(&vc->hdl, &s2255_ctrl_ops,
1641 V4L2_CID_SATURATION, 0, 255, 1, DEF_SATURATION);
1642 v4l2_ctrl_new_std(&vc->hdl, &s2255_ctrl_ops,
1643 V4L2_CID_HUE, 0, 255, 1, DEF_HUE);
1644 vc->jpegqual_ctrl = v4l2_ctrl_new_std(&vc->hdl,
1645 &s2255_ctrl_ops,
1646 V4L2_CID_JPEG_COMPRESSION_QUALITY,
1647 0, 100, 1, S2255_DEF_JPEG_QUAL);
1648 if (dev->dsp_fw_ver >= S2255_MIN_DSP_COLORFILTER &&
1649 (dev->pid != 0x2257 || vc->idx <= 1))
1650 v4l2_ctrl_new_custom(&vc->hdl, &color_filter_ctrl,
1651 NULL);
1652 if (vc->hdl.error) {
1653 ret = vc->hdl.error;
1654 v4l2_ctrl_handler_free(&vc->hdl);
1655 dev_err(&dev->udev->dev, "couldn't register control\n");
1656 break;
1657 }
1658 q = &vc->vb_vidq;
1659 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1660 q->io_modes = VB2_MMAP | VB2_READ | VB2_USERPTR;
1661 q->drv_priv = vc;
1662 q->lock = &vc->vb_lock;
1663 q->buf_struct_size = sizeof(struct s2255_buffer);
1664 q->mem_ops = &vb2_vmalloc_memops;
1665 q->ops = &s2255_video_qops;
1666 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1667 ret = vb2_queue_init(q);
1668 if (ret != 0) {
1669 dev_err(&dev->udev->dev,
1670 "%s vb2_queue_init 0x%x\n", __func__, ret);
1671 break;
1672 }
1673 /* register video devices */
1674 vc->vdev = template;
1675 vc->vdev.queue = q;
1676 vc->vdev.ctrl_handler = &vc->hdl;
1677 vc->vdev.lock = &dev->lock;
1678 vc->vdev.v4l2_dev = &dev->v4l2_dev;
1679 set_bit(V4L2_FL_USE_FH_PRIO, &vc->vdev.flags);
1680 video_set_drvdata(&vc->vdev, vc);
1681 if (video_nr == -1)
1682 ret = video_register_device(&vc->vdev,
1683 VFL_TYPE_GRABBER,
1684 video_nr);
1685 else
1686 ret = video_register_device(&vc->vdev,
1687 VFL_TYPE_GRABBER,
1688 cur_nr + i);
1689
1690 if (ret) {
1691 dev_err(&dev->udev->dev,
1692 "failed to register video device!\n");
1693 break;
1694 }
1695 atomic_inc(&dev->num_channels);
1696 v4l2_info(&dev->v4l2_dev, "V4L2 device registered as %s\n",
1697 video_device_node_name(&vc->vdev));
1698
1699 }
1700 pr_info("Sensoray 2255 V4L driver Revision: %s\n",
1701 S2255_VERSION);
1702 /* if no channels registered, return error and probe will fail*/
1703 if (atomic_read(&dev->num_channels) == 0) {
1704 v4l2_device_unregister(&dev->v4l2_dev);
1705 return ret;
1706 }
1707 if (atomic_read(&dev->num_channels) != MAX_CHANNELS)
1708 pr_warn("s2255: Not all channels available.\n");
1709 return 0;
1710 }
1711
1712 /* this function moves the usb stream read pipe data
1713 * into the system buffers.
1714 * returns 0 on success, EAGAIN if more data to process( call this
1715 * function again).
1716 *
1717 * Received frame structure:
1718 * bytes 0-3: marker : 0x2255DA4AL (S2255_MARKER_FRAME)
1719 * bytes 4-7: channel: 0-3
1720 * bytes 8-11: payload size: size of the frame
1721 * bytes 12-payloadsize+12: frame data
1722 */
1723 static int save_frame(struct s2255_dev *dev, struct s2255_pipeinfo *pipe_info)
1724 {
1725 char *pdest;
1726 u32 offset = 0;
1727 int bframe = 0;
1728 char *psrc;
1729 unsigned long copy_size;
1730 unsigned long size;
1731 s32 idx = -1;
1732 struct s2255_framei *frm;
1733 unsigned char *pdata;
1734 struct s2255_vc *vc;
1735 dprintk(dev, 100, "buffer to user\n");
1736 vc = &dev->vc[dev->cc];
1737 idx = vc->cur_frame;
1738 frm = &vc->buffer.frame[idx];
1739 if (frm->ulState == S2255_READ_IDLE) {
1740 int jj;
1741 unsigned int cc;
1742 __le32 *pdword; /*data from dsp is little endian */
1743 int payload;
1744 /* search for marker codes */
1745 pdata = (unsigned char *)pipe_info->transfer_buffer;
1746 pdword = (__le32 *)pdata;
1747 for (jj = 0; jj < (pipe_info->cur_transfer_size - 12); jj++) {
1748 switch (*pdword) {
1749 case S2255_MARKER_FRAME:
1750 dprintk(dev, 4, "marker @ offset: %d [%x %x]\n",
1751 jj, pdata[0], pdata[1]);
1752 offset = jj + PREFIX_SIZE;
1753 bframe = 1;
1754 cc = le32_to_cpu(pdword[1]);
1755 if (cc >= MAX_CHANNELS) {
1756 dprintk(dev, 0,
1757 "bad channel\n");
1758 return -EINVAL;
1759 }
1760 /* reverse it */
1761 dev->cc = G_chnmap[cc];
1762 vc = &dev->vc[dev->cc];
1763 payload = le32_to_cpu(pdword[3]);
1764 if (payload > vc->req_image_size) {
1765 vc->bad_payload++;
1766 /* discard the bad frame */
1767 return -EINVAL;
1768 }
1769 vc->pkt_size = payload;
1770 vc->jpg_size = le32_to_cpu(pdword[4]);
1771 break;
1772 case S2255_MARKER_RESPONSE:
1773
1774 pdata += DEF_USB_BLOCK;
1775 jj += DEF_USB_BLOCK;
1776 if (le32_to_cpu(pdword[1]) >= MAX_CHANNELS)
1777 break;
1778 cc = G_chnmap[le32_to_cpu(pdword[1])];
1779 if (cc >= MAX_CHANNELS)
1780 break;
1781 vc = &dev->vc[cc];
1782 switch (pdword[2]) {
1783 case S2255_RESPONSE_SETMODE:
1784 /* check if channel valid */
1785 /* set mode ready */
1786 vc->setmode_ready = 1;
1787 wake_up(&vc->wait_setmode);
1788 dprintk(dev, 5, "setmode rdy %d\n", cc);
1789 break;
1790 case S2255_RESPONSE_FW:
1791 dev->chn_ready |= (1 << cc);
1792 if ((dev->chn_ready & 0x0f) != 0x0f)
1793 break;
1794 /* all channels ready */
1795 pr_info("s2255: fw loaded\n");
1796 atomic_set(&dev->fw_data->fw_state,
1797 S2255_FW_SUCCESS);
1798 wake_up(&dev->fw_data->wait_fw);
1799 break;
1800 case S2255_RESPONSE_STATUS:
1801 vc->vidstatus = le32_to_cpu(pdword[3]);
1802 vc->vidstatus_ready = 1;
1803 wake_up(&vc->wait_vidstatus);
1804 dprintk(dev, 5, "vstat %x chan %d\n",
1805 le32_to_cpu(pdword[3]), cc);
1806 break;
1807 default:
1808 pr_info("s2255 unknown resp\n");
1809 }
1810 default:
1811 pdata++;
1812 break;
1813 }
1814 if (bframe)
1815 break;
1816 } /* for */
1817 if (!bframe)
1818 return -EINVAL;
1819 }
1820 vc = &dev->vc[dev->cc];
1821 idx = vc->cur_frame;
1822 frm = &vc->buffer.frame[idx];
1823 /* search done. now find out if should be acquiring on this channel */
1824 if (!vb2_is_streaming(&vc->vb_vidq)) {
1825 /* we found a frame, but this channel is turned off */
1826 frm->ulState = S2255_READ_IDLE;
1827 return -EINVAL;
1828 }
1829
1830 if (frm->ulState == S2255_READ_IDLE) {
1831 frm->ulState = S2255_READ_FRAME;
1832 frm->cur_size = 0;
1833 }
1834
1835 /* skip the marker 512 bytes (and offset if out of sync) */
1836 psrc = (u8 *)pipe_info->transfer_buffer + offset;
1837
1838
1839 if (frm->lpvbits == NULL) {
1840 dprintk(dev, 1, "s2255 frame buffer == NULL.%p %p %d %d",
1841 frm, dev, dev->cc, idx);
1842 return -ENOMEM;
1843 }
1844
1845 pdest = frm->lpvbits + frm->cur_size;
1846
1847 copy_size = (pipe_info->cur_transfer_size - offset);
1848
1849 size = vc->pkt_size - PREFIX_SIZE;
1850
1851 /* sanity check on pdest */
1852 if ((copy_size + frm->cur_size) < vc->req_image_size)
1853 memcpy(pdest, psrc, copy_size);
1854
1855 frm->cur_size += copy_size;
1856 dprintk(dev, 4, "cur_size: %lu, size: %lu\n", frm->cur_size, size);
1857
1858 if (frm->cur_size >= size) {
1859 dprintk(dev, 2, "******[%d]Buffer[%d]full*******\n",
1860 dev->cc, idx);
1861 vc->last_frame = vc->cur_frame;
1862 vc->cur_frame++;
1863 /* end of system frame ring buffer, start at zero */
1864 if ((vc->cur_frame == SYS_FRAMES) ||
1865 (vc->cur_frame == vc->buffer.dwFrames))
1866 vc->cur_frame = 0;
1867 /* frame ready */
1868 if (vb2_is_streaming(&vc->vb_vidq))
1869 s2255_got_frame(vc, vc->jpg_size);
1870 vc->frame_count++;
1871 frm->ulState = S2255_READ_IDLE;
1872 frm->cur_size = 0;
1873
1874 }
1875 /* done successfully */
1876 return 0;
1877 }
1878
1879 static void s2255_read_video_callback(struct s2255_dev *dev,
1880 struct s2255_pipeinfo *pipe_info)
1881 {
1882 int res;
1883 dprintk(dev, 50, "callback read video\n");
1884
1885 if (dev->cc >= MAX_CHANNELS) {
1886 dev->cc = 0;
1887 dev_err(&dev->udev->dev, "invalid channel\n");
1888 return;
1889 }
1890 /* otherwise copy to the system buffers */
1891 res = save_frame(dev, pipe_info);
1892 if (res != 0)
1893 dprintk(dev, 4, "s2255: read callback failed\n");
1894
1895 dprintk(dev, 50, "callback read video done\n");
1896 return;
1897 }
1898
1899 static long s2255_vendor_req(struct s2255_dev *dev, unsigned char Request,
1900 u16 Index, u16 Value, void *TransferBuffer,
1901 s32 TransferBufferLength, int bOut)
1902 {
1903 int r;
1904 if (!bOut) {
1905 r = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
1906 Request,
1907 USB_TYPE_VENDOR | USB_RECIP_DEVICE |
1908 USB_DIR_IN,
1909 Value, Index, TransferBuffer,
1910 TransferBufferLength, HZ * 5);
1911 } else {
1912 r = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
1913 Request, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1914 Value, Index, TransferBuffer,
1915 TransferBufferLength, HZ * 5);
1916 }
1917 return r;
1918 }
1919
1920 /*
1921 * retrieve FX2 firmware version. future use.
1922 * @param dev pointer to device extension
1923 * @return -1 for fail, else returns firmware version as an int(16 bits)
1924 */
1925 static int s2255_get_fx2fw(struct s2255_dev *dev)
1926 {
1927 int fw;
1928 int ret;
1929 unsigned char transBuffer[64];
1930 ret = s2255_vendor_req(dev, S2255_VR_FW, 0, 0, transBuffer, 2,
1931 S2255_VR_IN);
1932 if (ret < 0)
1933 dprintk(dev, 2, "get fw error: %x\n", ret);
1934 fw = transBuffer[0] + (transBuffer[1] << 8);
1935 dprintk(dev, 2, "Get FW %x %x\n", transBuffer[0], transBuffer[1]);
1936 return fw;
1937 }
1938
1939 /*
1940 * Create the system ring buffer to copy frames into from the
1941 * usb read pipe.
1942 */
1943 static int s2255_create_sys_buffers(struct s2255_vc *vc)
1944 {
1945 unsigned long i;
1946 unsigned long reqsize;
1947 vc->buffer.dwFrames = SYS_FRAMES;
1948 /* always allocate maximum size(PAL) for system buffers */
1949 reqsize = SYS_FRAMES_MAXSIZE;
1950
1951 if (reqsize > SYS_FRAMES_MAXSIZE)
1952 reqsize = SYS_FRAMES_MAXSIZE;
1953
1954 for (i = 0; i < SYS_FRAMES; i++) {
1955 /* allocate the frames */
1956 vc->buffer.frame[i].lpvbits = vmalloc(reqsize);
1957 vc->buffer.frame[i].size = reqsize;
1958 if (vc->buffer.frame[i].lpvbits == NULL) {
1959 pr_info("out of memory. using less frames\n");
1960 vc->buffer.dwFrames = i;
1961 break;
1962 }
1963 }
1964
1965 /* make sure internal states are set */
1966 for (i = 0; i < SYS_FRAMES; i++) {
1967 vc->buffer.frame[i].ulState = 0;
1968 vc->buffer.frame[i].cur_size = 0;
1969 }
1970
1971 vc->cur_frame = 0;
1972 vc->last_frame = -1;
1973 return 0;
1974 }
1975
1976 static int s2255_release_sys_buffers(struct s2255_vc *vc)
1977 {
1978 unsigned long i;
1979 for (i = 0; i < SYS_FRAMES; i++) {
1980 if (vc->buffer.frame[i].lpvbits)
1981 vfree(vc->buffer.frame[i].lpvbits);
1982 vc->buffer.frame[i].lpvbits = NULL;
1983 }
1984 return 0;
1985 }
1986
1987 static int s2255_board_init(struct s2255_dev *dev)
1988 {
1989 struct s2255_mode mode_def = DEF_MODEI_NTSC_CONT;
1990 int fw_ver;
1991 int j;
1992 struct s2255_pipeinfo *pipe = &dev->pipe;
1993 dprintk(dev, 4, "board init: %p", dev);
1994 memset(pipe, 0, sizeof(*pipe));
1995 pipe->dev = dev;
1996 pipe->cur_transfer_size = S2255_USB_XFER_SIZE;
1997 pipe->max_transfer_size = S2255_USB_XFER_SIZE;
1998
1999 pipe->transfer_buffer = kzalloc(pipe->max_transfer_size,
2000 GFP_KERNEL);
2001 if (pipe->transfer_buffer == NULL) {
2002 dprintk(dev, 1, "out of memory!\n");
2003 return -ENOMEM;
2004 }
2005 /* query the firmware */
2006 fw_ver = s2255_get_fx2fw(dev);
2007
2008 pr_info("s2255: usb firmware version %d.%d\n",
2009 (fw_ver >> 8) & 0xff,
2010 fw_ver & 0xff);
2011
2012 if (fw_ver < S2255_CUR_USB_FWVER)
2013 pr_info("s2255: newer USB firmware available\n");
2014
2015 for (j = 0; j < MAX_CHANNELS; j++) {
2016 struct s2255_vc *vc = &dev->vc[j];
2017 vc->mode = mode_def;
2018 if (dev->pid == 0x2257 && j > 1)
2019 vc->mode.color |= (1 << 16);
2020 vc->jpegqual = S2255_DEF_JPEG_QUAL;
2021 vc->width = LINE_SZ_4CIFS_NTSC;
2022 vc->height = NUM_LINES_4CIFS_NTSC * 2;
2023 vc->std = V4L2_STD_NTSC_M;
2024 vc->fmt = &formats[0];
2025 vc->mode.restart = 1;
2026 vc->req_image_size = get_transfer_size(&mode_def);
2027 vc->frame_count = 0;
2028 /* create the system buffers */
2029 s2255_create_sys_buffers(vc);
2030 }
2031 /* start read pipe */
2032 s2255_start_readpipe(dev);
2033 dprintk(dev, 1, "%s: success\n", __func__);
2034 return 0;
2035 }
2036
2037 static int s2255_board_shutdown(struct s2255_dev *dev)
2038 {
2039 u32 i;
2040 dprintk(dev, 1, "%s: dev: %p", __func__, dev);
2041
2042 for (i = 0; i < MAX_CHANNELS; i++) {
2043 if (vb2_is_streaming(&dev->vc[i].vb_vidq))
2044 s2255_stop_acquire(&dev->vc[i]);
2045 }
2046 s2255_stop_readpipe(dev);
2047 for (i = 0; i < MAX_CHANNELS; i++)
2048 s2255_release_sys_buffers(&dev->vc[i]);
2049 /* release transfer buffer */
2050 kfree(dev->pipe.transfer_buffer);
2051 return 0;
2052 }
2053
2054 static void read_pipe_completion(struct urb *purb)
2055 {
2056 struct s2255_pipeinfo *pipe_info;
2057 struct s2255_dev *dev;
2058 int status;
2059 int pipe;
2060 pipe_info = purb->context;
2061 if (pipe_info == NULL) {
2062 dev_err(&purb->dev->dev, "no context!\n");
2063 return;
2064 }
2065 dev = pipe_info->dev;
2066 if (dev == NULL) {
2067 dev_err(&purb->dev->dev, "no context!\n");
2068 return;
2069 }
2070 status = purb->status;
2071 /* if shutting down, do not resubmit, exit immediately */
2072 if (status == -ESHUTDOWN) {
2073 dprintk(dev, 2, "%s: err shutdown\n", __func__);
2074 pipe_info->err_count++;
2075 return;
2076 }
2077
2078 if (pipe_info->state == 0) {
2079 dprintk(dev, 2, "%s: exiting USB pipe", __func__);
2080 return;
2081 }
2082
2083 if (status == 0)
2084 s2255_read_video_callback(dev, pipe_info);
2085 else {
2086 pipe_info->err_count++;
2087 dprintk(dev, 1, "%s: failed URB %d\n", __func__, status);
2088 }
2089
2090 pipe = usb_rcvbulkpipe(dev->udev, dev->read_endpoint);
2091 /* reuse urb */
2092 usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev,
2093 pipe,
2094 pipe_info->transfer_buffer,
2095 pipe_info->cur_transfer_size,
2096 read_pipe_completion, pipe_info);
2097
2098 if (pipe_info->state != 0) {
2099 if (usb_submit_urb(pipe_info->stream_urb, GFP_ATOMIC))
2100 dev_err(&dev->udev->dev, "error submitting urb\n");
2101 } else {
2102 dprintk(dev, 2, "%s :complete state 0\n", __func__);
2103 }
2104 return;
2105 }
2106
2107 static int s2255_start_readpipe(struct s2255_dev *dev)
2108 {
2109 int pipe;
2110 int retval;
2111 struct s2255_pipeinfo *pipe_info = &dev->pipe;
2112 pipe = usb_rcvbulkpipe(dev->udev, dev->read_endpoint);
2113 dprintk(dev, 2, "%s: IN %d\n", __func__, dev->read_endpoint);
2114 pipe_info->state = 1;
2115 pipe_info->err_count = 0;
2116 pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL);
2117 if (!pipe_info->stream_urb) {
2118 dev_err(&dev->udev->dev,
2119 "ReadStream: Unable to alloc URB\n");
2120 return -ENOMEM;
2121 }
2122 /* transfer buffer allocated in board_init */
2123 usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev,
2124 pipe,
2125 pipe_info->transfer_buffer,
2126 pipe_info->cur_transfer_size,
2127 read_pipe_completion, pipe_info);
2128 retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL);
2129 if (retval) {
2130 pr_err("s2255: start read pipe failed\n");
2131 return retval;
2132 }
2133 return 0;
2134 }
2135
2136 /* starts acquisition process */
2137 static int s2255_start_acquire(struct s2255_vc *vc)
2138 {
2139 int res;
2140 unsigned long chn_rev;
2141 int j;
2142 struct s2255_dev *dev = to_s2255_dev(vc->vdev.v4l2_dev);
2143 __le32 *buffer = dev->cmdbuf;
2144
2145 mutex_lock(&dev->cmdlock);
2146 chn_rev = G_chnmap[vc->idx];
2147 vc->last_frame = -1;
2148 vc->bad_payload = 0;
2149 vc->cur_frame = 0;
2150 for (j = 0; j < SYS_FRAMES; j++) {
2151 vc->buffer.frame[j].ulState = 0;
2152 vc->buffer.frame[j].cur_size = 0;
2153 }
2154
2155 /* send the start command */
2156 buffer[0] = IN_DATA_TOKEN;
2157 buffer[1] = (__le32) cpu_to_le32(chn_rev);
2158 buffer[2] = CMD_START;
2159 res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
2160 if (res != 0)
2161 dev_err(&dev->udev->dev, "CMD_START error\n");
2162
2163 dprintk(dev, 2, "start acquire exit[%d] %d\n", vc->idx, res);
2164 mutex_unlock(&dev->cmdlock);
2165 return res;
2166 }
2167
2168 static int s2255_stop_acquire(struct s2255_vc *vc)
2169 {
2170 int res;
2171 unsigned long chn_rev;
2172 struct s2255_dev *dev = to_s2255_dev(vc->vdev.v4l2_dev);
2173 __le32 *buffer = dev->cmdbuf;
2174
2175 mutex_lock(&dev->cmdlock);
2176 chn_rev = G_chnmap[vc->idx];
2177 /* send the stop command */
2178 buffer[0] = IN_DATA_TOKEN;
2179 buffer[1] = (__le32) cpu_to_le32(chn_rev);
2180 buffer[2] = CMD_STOP;
2181
2182 res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
2183 if (res != 0)
2184 dev_err(&dev->udev->dev, "CMD_STOP error\n");
2185
2186 dprintk(dev, 4, "%s: chn %d, res %d\n", __func__, vc->idx, res);
2187 mutex_unlock(&dev->cmdlock);
2188 return res;
2189 }
2190
2191 static void s2255_stop_readpipe(struct s2255_dev *dev)
2192 {
2193 struct s2255_pipeinfo *pipe = &dev->pipe;
2194
2195 pipe->state = 0;
2196 if (pipe->stream_urb) {
2197 /* cancel urb */
2198 usb_kill_urb(pipe->stream_urb);
2199 usb_free_urb(pipe->stream_urb);
2200 pipe->stream_urb = NULL;
2201 }
2202 dprintk(dev, 4, "%s", __func__);
2203 return;
2204 }
2205
2206 static void s2255_fwload_start(struct s2255_dev *dev, int reset)
2207 {
2208 if (reset)
2209 s2255_reset_dsppower(dev);
2210 dev->fw_data->fw_size = dev->fw_data->fw->size;
2211 atomic_set(&dev->fw_data->fw_state, S2255_FW_NOTLOADED);
2212 memcpy(dev->fw_data->pfw_data,
2213 dev->fw_data->fw->data, CHUNK_SIZE);
2214 dev->fw_data->fw_loaded = CHUNK_SIZE;
2215 usb_fill_bulk_urb(dev->fw_data->fw_urb, dev->udev,
2216 usb_sndbulkpipe(dev->udev, 2),
2217 dev->fw_data->pfw_data,
2218 CHUNK_SIZE, s2255_fwchunk_complete,
2219 dev->fw_data);
2220 mod_timer(&dev->timer, jiffies + HZ);
2221 }
2222
2223 /* standard usb probe function */
2224 static int s2255_probe(struct usb_interface *interface,
2225 const struct usb_device_id *id)
2226 {
2227 struct s2255_dev *dev = NULL;
2228 struct usb_host_interface *iface_desc;
2229 struct usb_endpoint_descriptor *endpoint;
2230 int i;
2231 int retval = -ENOMEM;
2232 __le32 *pdata;
2233 int fw_size;
2234
2235 /* allocate memory for our device state and initialize it to zero */
2236 dev = kzalloc(sizeof(struct s2255_dev), GFP_KERNEL);
2237 if (dev == NULL) {
2238 s2255_dev_err(&interface->dev, "out of memory\n");
2239 return -ENOMEM;
2240 }
2241
2242 dev->cmdbuf = kzalloc(S2255_CMDBUF_SIZE, GFP_KERNEL);
2243 if (dev->cmdbuf == NULL) {
2244 s2255_dev_err(&interface->dev, "out of memory\n");
2245 return -ENOMEM;
2246 }
2247
2248 atomic_set(&dev->num_channels, 0);
2249 dev->pid = le16_to_cpu(id->idProduct);
2250 dev->fw_data = kzalloc(sizeof(struct s2255_fw), GFP_KERNEL);
2251 if (!dev->fw_data)
2252 goto errorFWDATA1;
2253 mutex_init(&dev->lock);
2254 mutex_init(&dev->cmdlock);
2255 /* grab usb_device and save it */
2256 dev->udev = usb_get_dev(interface_to_usbdev(interface));
2257 if (dev->udev == NULL) {
2258 dev_err(&interface->dev, "null usb device\n");
2259 retval = -ENODEV;
2260 goto errorUDEV;
2261 }
2262 dev_dbg(&interface->dev, "dev: %p, udev %p interface %p\n",
2263 dev, dev->udev, interface);
2264 dev->interface = interface;
2265 /* set up the endpoint information */
2266 iface_desc = interface->cur_altsetting;
2267 dev_dbg(&interface->dev, "num EP: %d\n",
2268 iface_desc->desc.bNumEndpoints);
2269 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
2270 endpoint = &iface_desc->endpoint[i].desc;
2271 if (!dev->read_endpoint && usb_endpoint_is_bulk_in(endpoint)) {
2272 /* we found the bulk in endpoint */
2273 dev->read_endpoint = endpoint->bEndpointAddress;
2274 }
2275 }
2276
2277 if (!dev->read_endpoint) {
2278 dev_err(&interface->dev, "Could not find bulk-in endpoint\n");
2279 goto errorEP;
2280 }
2281 init_timer(&dev->timer);
2282 dev->timer.function = s2255_timer;
2283 dev->timer.data = (unsigned long)dev->fw_data;
2284 init_waitqueue_head(&dev->fw_data->wait_fw);
2285 for (i = 0; i < MAX_CHANNELS; i++) {
2286 struct s2255_vc *vc = &dev->vc[i];
2287 vc->idx = i;
2288 vc->dev = dev;
2289 init_waitqueue_head(&vc->wait_setmode);
2290 init_waitqueue_head(&vc->wait_vidstatus);
2291 spin_lock_init(&vc->qlock);
2292 mutex_init(&vc->vb_lock);
2293 }
2294
2295 dev->fw_data->fw_urb = usb_alloc_urb(0, GFP_KERNEL);
2296 if (!dev->fw_data->fw_urb) {
2297 dev_err(&interface->dev, "out of memory!\n");
2298 goto errorFWURB;
2299 }
2300
2301 dev->fw_data->pfw_data = kzalloc(CHUNK_SIZE, GFP_KERNEL);
2302 if (!dev->fw_data->pfw_data) {
2303 dev_err(&interface->dev, "out of memory!\n");
2304 goto errorFWDATA2;
2305 }
2306 /* load the first chunk */
2307 if (request_firmware(&dev->fw_data->fw,
2308 FIRMWARE_FILE_NAME, &dev->udev->dev)) {
2309 dev_err(&interface->dev, "sensoray 2255 failed to get firmware\n");
2310 goto errorREQFW;
2311 }
2312 /* check the firmware is valid */
2313 fw_size = dev->fw_data->fw->size;
2314 pdata = (__le32 *) &dev->fw_data->fw->data[fw_size - 8];
2315
2316 if (*pdata != S2255_FW_MARKER) {
2317 dev_err(&interface->dev, "Firmware invalid.\n");
2318 retval = -ENODEV;
2319 goto errorFWMARKER;
2320 } else {
2321 /* make sure firmware is the latest */
2322 __le32 *pRel;
2323 pRel = (__le32 *) &dev->fw_data->fw->data[fw_size - 4];
2324 pr_info("s2255 dsp fw version %x\n", le32_to_cpu(*pRel));
2325 dev->dsp_fw_ver = le32_to_cpu(*pRel);
2326 if (dev->dsp_fw_ver < S2255_CUR_DSP_FWVER)
2327 pr_info("s2255: f2255usb.bin out of date.\n");
2328 if (dev->pid == 0x2257 &&
2329 dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
2330 pr_warn("2257 needs firmware %d or above.\n",
2331 S2255_MIN_DSP_COLORFILTER);
2332 }
2333 usb_reset_device(dev->udev);
2334 /* load 2255 board specific */
2335 retval = s2255_board_init(dev);
2336 if (retval)
2337 goto errorBOARDINIT;
2338 s2255_fwload_start(dev, 0);
2339 /* loads v4l specific */
2340 retval = s2255_probe_v4l(dev);
2341 if (retval)
2342 goto errorBOARDINIT;
2343 dev_info(&interface->dev, "Sensoray 2255 detected\n");
2344 return 0;
2345 errorBOARDINIT:
2346 s2255_board_shutdown(dev);
2347 errorFWMARKER:
2348 release_firmware(dev->fw_data->fw);
2349 errorREQFW:
2350 kfree(dev->fw_data->pfw_data);
2351 errorFWDATA2:
2352 usb_free_urb(dev->fw_data->fw_urb);
2353 errorFWURB:
2354 del_timer(&dev->timer);
2355 errorEP:
2356 usb_put_dev(dev->udev);
2357 errorUDEV:
2358 kfree(dev->fw_data);
2359 mutex_destroy(&dev->lock);
2360 errorFWDATA1:
2361 kfree(dev->cmdbuf);
2362 kfree(dev);
2363 pr_warn("Sensoray 2255 driver load failed: 0x%x\n", retval);
2364 return retval;
2365 }
2366
2367 /* disconnect routine. when board is removed physically or with rmmod */
2368 static void s2255_disconnect(struct usb_interface *interface)
2369 {
2370 struct s2255_dev *dev = to_s2255_dev(usb_get_intfdata(interface));
2371 int i;
2372 int channels = atomic_read(&dev->num_channels);
2373 mutex_lock(&dev->lock);
2374 v4l2_device_disconnect(&dev->v4l2_dev);
2375 mutex_unlock(&dev->lock);
2376 /*see comments in the uvc_driver.c usb disconnect function */
2377 atomic_inc(&dev->num_channels);
2378 /* unregister each video device. */
2379 for (i = 0; i < channels; i++)
2380 video_unregister_device(&dev->vc[i].vdev);
2381 /* wake up any of our timers */
2382 atomic_set(&dev->fw_data->fw_state, S2255_FW_DISCONNECTING);
2383 wake_up(&dev->fw_data->wait_fw);
2384 for (i = 0; i < MAX_CHANNELS; i++) {
2385 dev->vc[i].setmode_ready = 1;
2386 wake_up(&dev->vc[i].wait_setmode);
2387 dev->vc[i].vidstatus_ready = 1;
2388 wake_up(&dev->vc[i].wait_vidstatus);
2389 }
2390 if (atomic_dec_and_test(&dev->num_channels))
2391 s2255_destroy(dev);
2392 dev_info(&interface->dev, "%s\n", __func__);
2393 }
2394
2395 static struct usb_driver s2255_driver = {
2396 .name = S2255_DRIVER_NAME,
2397 .probe = s2255_probe,
2398 .disconnect = s2255_disconnect,
2399 .id_table = s2255_table,
2400 };
2401
2402 module_usb_driver(s2255_driver);
2403
2404 MODULE_DESCRIPTION("Sensoray 2255 Video for Linux driver");
2405 MODULE_AUTHOR("Dean Anderson (Sensoray Company Inc.)");
2406 MODULE_LICENSE("GPL");
2407 MODULE_VERSION(S2255_VERSION);
2408 MODULE_FIRMWARE(FIRMWARE_FILE_NAME);
Linux kernel - Deliverables
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