?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge tag 'regmap-fix-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / media / platform / davinci / vpfe_capture.c
blobf9f7dd17c57c3706eb2a38c4842b8dbce152a54e
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2008-2009 Texas Instruments Inc
4 *
5 * Driver name : VPFE Capture driver
6 * VPFE Capture driver allows applications to capture and stream video
7 * frames on DaVinci SoCs (DM6446, DM355 etc) from a YUV source such as
8 * TVP5146 or Raw Bayer RGB image data from an image sensor
9 * such as Microns' MT9T001, MT9T031 etc.
10 *
11 * These SoCs have, in common, a Video Processing Subsystem (VPSS) that
12 * consists of a Video Processing Front End (VPFE) for capturing
13 * video/raw image data and Video Processing Back End (VPBE) for displaying
14 * YUV data through an in-built analog encoder or Digital LCD port. This
15 * driver is for capture through VPFE. A typical EVM using these SoCs have
16 * following high level configuration.
17 *
18 * decoder(TVP5146/ YUV/
19 * MT9T001) --> Raw Bayer RGB ---> MUX -> VPFE (CCDC/ISIF)
20 * data input | |
21 * V |
22 * SDRAM |
23 * V
24 * Image Processor
25 * |
26 * V
27 * SDRAM
28 * The data flow happens from a decoder connected to the VPFE over a
29 * YUV embedded (BT.656/BT.1120) or separate sync or raw bayer rgb interface
30 * and to the input of VPFE through an optional MUX (if more inputs are
31 * to be interfaced on the EVM). The input data is first passed through
32 * CCDC (CCD Controller, a.k.a Image Sensor Interface, ISIF). The CCDC
33 * does very little or no processing on YUV data and does pre-process Raw
34 * Bayer RGB data through modules such as Defect Pixel Correction (DFC)
35 * Color Space Conversion (CSC), data gain/offset etc. After this, data
36 * can be written to SDRAM or can be connected to the image processing
37 * block such as IPIPE (on DM355 only).
38 *
39 * Features supported
40 * - MMAP IO
41 * - Capture using TVP5146 over BT.656
42 * - support for interfacing decoders using sub device model
43 * - Work with DM355 or DM6446 CCDC to do Raw Bayer RGB/YUV
44 * data capture to SDRAM.
45 * TODO list
46 * - Support multiple REQBUF after open
47 * - Support for de-allocating buffers through REQBUF
48 * - Support for Raw Bayer RGB capture
49 * - Support for chaining Image Processor
50 * - Support for static allocation of buffers
51 * - Support for USERPTR IO
52 * - Support for STREAMON before QBUF
53 * - Support for control ioctls
54 */
55 #include <linux/module.h>
56 #include <linux/slab.h>
57 #include <linux/init.h>
58 #include <linux/platform_device.h>
59 #include <linux/interrupt.h>
60 #include <media/v4l2-common.h>
61 #include <linux/io.h>
62 #include <media/davinci/vpfe_capture.h>
63 #include "ccdc_hw_device.h"
64
65 static int debug;
66 static u32 numbuffers = 3;
67 static u32 bufsize = (720 * 576 * 2);
68
69 module_param(numbuffers, uint, S_IRUGO);
70 module_param(bufsize, uint, S_IRUGO);
71 module_param(debug, int, 0644);
72
73 MODULE_PARM_DESC(numbuffers, "buffer count (default:3)");
74 MODULE_PARM_DESC(bufsize, "buffer size in bytes (default:720 x 576 x 2)");
75 MODULE_PARM_DESC(debug, "Debug level 0-1");
76
77 MODULE_DESCRIPTION("VPFE Video for Linux Capture Driver");
78 MODULE_LICENSE("GPL");
79 MODULE_AUTHOR("Texas Instruments");
80
81 /* standard information */
82 struct vpfe_standard {
83 v4l2_std_id std_id;
84 unsigned int width;
85 unsigned int height;
86 struct v4l2_fract pixelaspect;
87 /* 0 - progressive, 1 - interlaced */
88 int frame_format;
89 };
90
91 /* ccdc configuration */
92 struct ccdc_config {
93 /* This make sure vpfe is probed and ready to go */
94 int vpfe_probed;
95 /* name of ccdc device */
96 char name[32];
97 };
98
99 /* data structures */
100 static struct vpfe_config_params config_params = {
101 .min_numbuffers = 3,
102 .numbuffers = 3,
103 .min_bufsize = 720 * 480 * 2,
104 .device_bufsize = 720 * 576 * 2,
105 };
106
107 /* ccdc device registered */
108 static const struct ccdc_hw_device *ccdc_dev;
109 /* lock for accessing ccdc information */
110 static DEFINE_MUTEX(ccdc_lock);
111 /* ccdc configuration */
112 static struct ccdc_config *ccdc_cfg;
113
114 static const struct vpfe_standard vpfe_standards[] = {
115 {V4L2_STD_525_60, 720, 480, {11, 10}, 1},
116 {V4L2_STD_625_50, 720, 576, {54, 59}, 1},
117 };
118
119 /* Used when raw Bayer image from ccdc is directly captured to SDRAM */
120 static const struct vpfe_pixel_format vpfe_pix_fmts[] = {
121 {
122 .pixelformat = V4L2_PIX_FMT_SBGGR8,
123 .bpp = 1,
124 },
125 {
126 .pixelformat = V4L2_PIX_FMT_SBGGR16,
127 .bpp = 2,
128 },
129 {
130 .pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8,
131 .bpp = 1,
132 },
133 {
134 .pixelformat = V4L2_PIX_FMT_UYVY,
135 .bpp = 2,
136 },
137 {
138 .pixelformat = V4L2_PIX_FMT_YUYV,
139 .bpp = 2,
140 },
141 {
142 .pixelformat = V4L2_PIX_FMT_NV12,
143 .bpp = 1,
144 },
145 };
146
147 /*
148 * vpfe_lookup_pix_format()
149 * lookup an entry in the vpfe pix format table based on pix_format
150 */
151 static const struct vpfe_pixel_format *vpfe_lookup_pix_format(u32 pix_format)
152 {
153 int i;
154
155 for (i = 0; i < ARRAY_SIZE(vpfe_pix_fmts); i++) {
156 if (pix_format == vpfe_pix_fmts[i].pixelformat)
157 return &vpfe_pix_fmts[i];
158 }
159 return NULL;
160 }
161
162 /*
163 * vpfe_register_ccdc_device. CCDC module calls this to
164 * register with vpfe capture
165 */
166 int vpfe_register_ccdc_device(const struct ccdc_hw_device *dev)
167 {
168 int ret = 0;
169 printk(KERN_NOTICE "vpfe_register_ccdc_device: %s\n", dev->name);
170
171 if (!dev->hw_ops.open ||
172 !dev->hw_ops.enable ||
173 !dev->hw_ops.set_hw_if_params ||
174 !dev->hw_ops.configure ||
175 !dev->hw_ops.set_buftype ||
176 !dev->hw_ops.get_buftype ||
177 !dev->hw_ops.enum_pix ||
178 !dev->hw_ops.set_frame_format ||
179 !dev->hw_ops.get_frame_format ||
180 !dev->hw_ops.get_pixel_format ||
181 !dev->hw_ops.set_pixel_format ||
182 !dev->hw_ops.set_image_window ||
183 !dev->hw_ops.get_image_window ||
184 !dev->hw_ops.get_line_length ||
185 !dev->hw_ops.getfid)
186 return -EINVAL;
187
188 mutex_lock(&ccdc_lock);
189 if (!ccdc_cfg) {
190 /*
191 * TODO. Will this ever happen? if so, we need to fix it.
192 * Proabably we need to add the request to a linked list and
193 * walk through it during vpfe probe
194 */
195 printk(KERN_ERR "vpfe capture not initialized\n");
196 ret = -EFAULT;
197 goto unlock;
198 }
199
200 if (strcmp(dev->name, ccdc_cfg->name)) {
201 /* ignore this ccdc */
202 ret = -EINVAL;
203 goto unlock;
204 }
205
206 if (ccdc_dev) {
207 printk(KERN_ERR "ccdc already registered\n");
208 ret = -EINVAL;
209 goto unlock;
210 }
211
212 ccdc_dev = dev;
213 unlock:
214 mutex_unlock(&ccdc_lock);
215 return ret;
216 }
217 EXPORT_SYMBOL(vpfe_register_ccdc_device);
218
219 /*
220 * vpfe_unregister_ccdc_device. CCDC module calls this to
221 * unregister with vpfe capture
222 */
223 void vpfe_unregister_ccdc_device(const struct ccdc_hw_device *dev)
224 {
225 if (!dev) {
226 printk(KERN_ERR "invalid ccdc device ptr\n");
227 return;
228 }
229
230 printk(KERN_NOTICE "vpfe_unregister_ccdc_device, dev->name = %s\n",
231 dev->name);
232
233 if (strcmp(dev->name, ccdc_cfg->name)) {
234 /* ignore this ccdc */
235 return;
236 }
237
238 mutex_lock(&ccdc_lock);
239 ccdc_dev = NULL;
240 mutex_unlock(&ccdc_lock);
241 }
242 EXPORT_SYMBOL(vpfe_unregister_ccdc_device);
243
244 /*
245 * vpfe_config_ccdc_image_format()
246 * For a pix format, configure ccdc to setup the capture
247 */
248 static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe_dev)
249 {
250 enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED;
251 int ret = 0;
252
253 if (ccdc_dev->hw_ops.set_pixel_format(
254 vpfe_dev->fmt.fmt.pix.pixelformat) < 0) {
255 v4l2_err(&vpfe_dev->v4l2_dev,
256 "couldn't set pix format in ccdc\n");
257 return -EINVAL;
258 }
259 /* configure the image window */
260 ccdc_dev->hw_ops.set_image_window(&vpfe_dev->crop);
261
262 switch (vpfe_dev->fmt.fmt.pix.field) {
263 case V4L2_FIELD_INTERLACED:
264 /* do nothing, since it is default */
265 ret = ccdc_dev->hw_ops.set_buftype(
266 CCDC_BUFTYPE_FLD_INTERLEAVED);
267 break;
268 case V4L2_FIELD_NONE:
269 frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
270 /* buffer type only applicable for interlaced scan */
271 break;
272 case V4L2_FIELD_SEQ_TB:
273 ret = ccdc_dev->hw_ops.set_buftype(
274 CCDC_BUFTYPE_FLD_SEPARATED);
275 break;
276 default:
277 return -EINVAL;
278 }
279
280 /* set the frame format */
281 if (!ret)
282 ret = ccdc_dev->hw_ops.set_frame_format(frm_fmt);
283 return ret;
284 }
285 /*
286 * vpfe_config_image_format()
287 * For a given standard, this functions sets up the default
288 * pix format & crop values in the vpfe device and ccdc. It first
289 * starts with defaults based values from the standard table.
290 * It then checks if sub device supports get_fmt and then override the
291 * values based on that.Sets crop values to match with scan resolution
292 * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the
293 * values in ccdc
294 */
295 static int vpfe_config_image_format(struct vpfe_device *vpfe_dev,
296 v4l2_std_id std_id)
297 {
298 struct vpfe_subdev_info *sdinfo = vpfe_dev->current_subdev;
299 struct v4l2_subdev_format fmt = {
300 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
301 };
302 struct v4l2_mbus_framefmt *mbus_fmt = &fmt.format;
303 struct v4l2_pix_format *pix = &vpfe_dev->fmt.fmt.pix;
304 int i, ret;
305
306 for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {
307 if (vpfe_standards[i].std_id & std_id) {
308 vpfe_dev->std_info.active_pixels =
309 vpfe_standards[i].width;
310 vpfe_dev->std_info.active_lines =
311 vpfe_standards[i].height;
312 vpfe_dev->std_info.frame_format =
313 vpfe_standards[i].frame_format;
314 vpfe_dev->std_index = i;
315 break;
316 }
317 }
318
319 if (i == ARRAY_SIZE(vpfe_standards)) {
320 v4l2_err(&vpfe_dev->v4l2_dev, "standard not supported\n");
321 return -EINVAL;
322 }
323
324 vpfe_dev->crop.top = 0;
325 vpfe_dev->crop.left = 0;
326 vpfe_dev->crop.width = vpfe_dev->std_info.active_pixels;
327 vpfe_dev->crop.height = vpfe_dev->std_info.active_lines;
328 pix->width = vpfe_dev->crop.width;
329 pix->height = vpfe_dev->crop.height;
330
331 /* first field and frame format based on standard frame format */
332 if (vpfe_dev->std_info.frame_format) {
333 pix->field = V4L2_FIELD_INTERLACED;
334 /* assume V4L2_PIX_FMT_UYVY as default */
335 pix->pixelformat = V4L2_PIX_FMT_UYVY;
336 v4l2_fill_mbus_format(mbus_fmt, pix,
337 MEDIA_BUS_FMT_YUYV10_2X10);
338 } else {
339 pix->field = V4L2_FIELD_NONE;
340 /* assume V4L2_PIX_FMT_SBGGR8 */
341 pix->pixelformat = V4L2_PIX_FMT_SBGGR8;
342 v4l2_fill_mbus_format(mbus_fmt, pix,
343 MEDIA_BUS_FMT_SBGGR8_1X8);
344 }
345
346 /* if sub device supports get_fmt, override the defaults */
347 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
348 sdinfo->grp_id, pad, get_fmt, NULL, &fmt);
349
350 if (ret && ret != -ENOIOCTLCMD) {
351 v4l2_err(&vpfe_dev->v4l2_dev,
352 "error in getting get_fmt from sub device\n");
353 return ret;
354 }
355 v4l2_fill_pix_format(pix, mbus_fmt);
356 pix->bytesperline = pix->width * 2;
357 pix->sizeimage = pix->bytesperline * pix->height;
358
359 /* Sets the values in CCDC */
360 ret = vpfe_config_ccdc_image_format(vpfe_dev);
361 if (ret)
362 return ret;
363
364 /* Update the values of sizeimage and bytesperline */
365 pix->bytesperline = ccdc_dev->hw_ops.get_line_length();
366 pix->sizeimage = pix->bytesperline * pix->height;
367
368 return 0;
369 }
370
371 static int vpfe_initialize_device(struct vpfe_device *vpfe_dev)
372 {
373 int ret;
374
375 /* set first input of current subdevice as the current input */
376 vpfe_dev->current_input = 0;
377
378 /* set default standard */
379 vpfe_dev->std_index = 0;
380
381 /* Configure the default format information */
382 ret = vpfe_config_image_format(vpfe_dev,
383 vpfe_standards[vpfe_dev->std_index].std_id);
384 if (ret)
385 return ret;
386
387 /* now open the ccdc device to initialize it */
388 mutex_lock(&ccdc_lock);
389 if (!ccdc_dev) {
390 v4l2_err(&vpfe_dev->v4l2_dev, "ccdc device not registered\n");
391 ret = -ENODEV;
392 goto unlock;
393 }
394
395 if (!try_module_get(ccdc_dev->owner)) {
396 v4l2_err(&vpfe_dev->v4l2_dev, "Couldn't lock ccdc module\n");
397 ret = -ENODEV;
398 goto unlock;
399 }
400 ret = ccdc_dev->hw_ops.open(vpfe_dev->pdev);
401 if (!ret)
402 vpfe_dev->initialized = 1;
403
404 /* Clear all VPFE/CCDC interrupts */
405 if (vpfe_dev->cfg->clr_intr)
406 vpfe_dev->cfg->clr_intr(-1);
407
408 unlock:
409 mutex_unlock(&ccdc_lock);
410 return ret;
411 }
412
413 /*
414 * vpfe_open : It creates object of file handle structure and
415 * stores it in private_data member of filepointer
416 */
417 static int vpfe_open(struct file *file)
418 {
419 struct vpfe_device *vpfe_dev = video_drvdata(file);
420 struct video_device *vdev = video_devdata(file);
421 struct vpfe_fh *fh;
422
423 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_open\n");
424
425 if (!vpfe_dev->cfg->num_subdevs) {
426 v4l2_err(&vpfe_dev->v4l2_dev, "No decoder registered\n");
427 return -ENODEV;
428 }
429
430 /* Allocate memory for the file handle object */
431 fh = kmalloc(sizeof(*fh), GFP_KERNEL);
432 if (!fh)
433 return -ENOMEM;
434
435 /* store pointer to fh in private_data member of file */
436 file->private_data = fh;
437 fh->vpfe_dev = vpfe_dev;
438 v4l2_fh_init(&fh->fh, vdev);
439 mutex_lock(&vpfe_dev->lock);
440 /* If decoder is not initialized. initialize it */
441 if (!vpfe_dev->initialized) {
442 if (vpfe_initialize_device(vpfe_dev)) {
443 mutex_unlock(&vpfe_dev->lock);
444 v4l2_fh_exit(&fh->fh);
445 kfree(fh);
446 return -ENODEV;
447 }
448 }
449 /* Increment device usrs counter */
450 vpfe_dev->usrs++;
451 /* Set io_allowed member to false */
452 fh->io_allowed = 0;
453 v4l2_fh_add(&fh->fh);
454 mutex_unlock(&vpfe_dev->lock);
455 return 0;
456 }
457
458 static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe_dev)
459 {
460 unsigned long addr;
461
462 vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
463 struct videobuf_buffer, queue);
464 list_del(&vpfe_dev->next_frm->queue);
465 vpfe_dev->next_frm->state = VIDEOBUF_ACTIVE;
466 addr = videobuf_to_dma_contig(vpfe_dev->next_frm);
467
468 ccdc_dev->hw_ops.setfbaddr(addr);
469 }
470
471 static void vpfe_schedule_bottom_field(struct vpfe_device *vpfe_dev)
472 {
473 unsigned long addr;
474
475 addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
476 addr += vpfe_dev->field_off;
477 ccdc_dev->hw_ops.setfbaddr(addr);
478 }
479
480 static void vpfe_process_buffer_complete(struct vpfe_device *vpfe_dev)
481 {
482 vpfe_dev->cur_frm->ts = ktime_get_ns();
483 vpfe_dev->cur_frm->state = VIDEOBUF_DONE;
484 vpfe_dev->cur_frm->size = vpfe_dev->fmt.fmt.pix.sizeimage;
485 wake_up_interruptible(&vpfe_dev->cur_frm->done);
486 vpfe_dev->cur_frm = vpfe_dev->next_frm;
487 }
488
489 /* ISR for VINT0*/
490 static irqreturn_t vpfe_isr(int irq, void *dev_id)
491 {
492 struct vpfe_device *vpfe_dev = dev_id;
493 enum v4l2_field field;
494 int fid;
495
496 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nStarting vpfe_isr...\n");
497 field = vpfe_dev->fmt.fmt.pix.field;
498
499 /* if streaming not started, don't do anything */
500 if (!vpfe_dev->started)
501 goto clear_intr;
502
503 /* only for 6446 this will be applicable */
504 if (ccdc_dev->hw_ops.reset)
505 ccdc_dev->hw_ops.reset();
506
507 if (field == V4L2_FIELD_NONE) {
508 /* handle progressive frame capture */
509 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
510 "frame format is progressive...\n");
511 if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
512 vpfe_process_buffer_complete(vpfe_dev);
513 goto clear_intr;
514 }
515
516 /* interlaced or TB capture check which field we are in hardware */
517 fid = ccdc_dev->hw_ops.getfid();
518
519 /* switch the software maintained field id */
520 vpfe_dev->field_id ^= 1;
521 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "field id = %x:%x.\n",
522 fid, vpfe_dev->field_id);
523 if (fid == vpfe_dev->field_id) {
524 /* we are in-sync here,continue */
525 if (fid == 0) {
526 /*
527 * One frame is just being captured. If the next frame
528 * is available, release the current frame and move on
529 */
530 if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
531 vpfe_process_buffer_complete(vpfe_dev);
532 /*
533 * based on whether the two fields are stored
534 * interleavely or separately in memory, reconfigure
535 * the CCDC memory address
536 */
537 if (field == V4L2_FIELD_SEQ_TB)
538 vpfe_schedule_bottom_field(vpfe_dev);
539 goto clear_intr;
540 }
541 /*
542 * if one field is just being captured configure
543 * the next frame get the next frame from the empty
544 * queue if no frame is available hold on to the
545 * current buffer
546 */
547 spin_lock(&vpfe_dev->dma_queue_lock);
548 if (!list_empty(&vpfe_dev->dma_queue) &&
549 vpfe_dev->cur_frm == vpfe_dev->next_frm)
550 vpfe_schedule_next_buffer(vpfe_dev);
551 spin_unlock(&vpfe_dev->dma_queue_lock);
552 } else if (fid == 0) {
553 /*
554 * out of sync. Recover from any hardware out-of-sync.
555 * May loose one frame
556 */
557 vpfe_dev->field_id = fid;
558 }
559 clear_intr:
560 if (vpfe_dev->cfg->clr_intr)
561 vpfe_dev->cfg->clr_intr(irq);
562
563 return IRQ_HANDLED;
564 }
565
566 /* vdint1_isr - isr handler for VINT1 interrupt */
567 static irqreturn_t vdint1_isr(int irq, void *dev_id)
568 {
569 struct vpfe_device *vpfe_dev = dev_id;
570
571 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nInside vdint1_isr...\n");
572
573 /* if streaming not started, don't do anything */
574 if (!vpfe_dev->started) {
575 if (vpfe_dev->cfg->clr_intr)
576 vpfe_dev->cfg->clr_intr(irq);
577 return IRQ_HANDLED;
578 }
579
580 spin_lock(&vpfe_dev->dma_queue_lock);
581 if ((vpfe_dev->fmt.fmt.pix.field == V4L2_FIELD_NONE) &&
582 !list_empty(&vpfe_dev->dma_queue) &&
583 vpfe_dev->cur_frm == vpfe_dev->next_frm)
584 vpfe_schedule_next_buffer(vpfe_dev);
585 spin_unlock(&vpfe_dev->dma_queue_lock);
586
587 if (vpfe_dev->cfg->clr_intr)
588 vpfe_dev->cfg->clr_intr(irq);
589
590 return IRQ_HANDLED;
591 }
592
593 static void vpfe_detach_irq(struct vpfe_device *vpfe_dev)
594 {
595 enum ccdc_frmfmt frame_format;
596
597 frame_format = ccdc_dev->hw_ops.get_frame_format();
598 if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
599 free_irq(vpfe_dev->ccdc_irq1, vpfe_dev);
600 }
601
602 static int vpfe_attach_irq(struct vpfe_device *vpfe_dev)
603 {
604 enum ccdc_frmfmt frame_format;
605
606 frame_format = ccdc_dev->hw_ops.get_frame_format();
607 if (frame_format == CCDC_FRMFMT_PROGRESSIVE) {
608 return request_irq(vpfe_dev->ccdc_irq1, vdint1_isr,
609 0, "vpfe_capture1",
610 vpfe_dev);
611 }
612 return 0;
613 }
614
615 /* vpfe_stop_ccdc_capture: stop streaming in ccdc/isif */
616 static void vpfe_stop_ccdc_capture(struct vpfe_device *vpfe_dev)
617 {
618 vpfe_dev->started = 0;
619 ccdc_dev->hw_ops.enable(0);
620 if (ccdc_dev->hw_ops.enable_out_to_sdram)
621 ccdc_dev->hw_ops.enable_out_to_sdram(0);
622 }
623
624 /*
625 * vpfe_release : This function deletes buffer queue, frees the
626 * buffers and the vpfe file handle
627 */
628 static int vpfe_release(struct file *file)
629 {
630 struct vpfe_device *vpfe_dev = video_drvdata(file);
631 struct vpfe_fh *fh = file->private_data;
632 struct vpfe_subdev_info *sdinfo;
633 int ret;
634
635 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_release\n");
636
637 /* Get the device lock */
638 mutex_lock(&vpfe_dev->lock);
639 /* if this instance is doing IO */
640 if (fh->io_allowed) {
641 if (vpfe_dev->started) {
642 sdinfo = vpfe_dev->current_subdev;
643 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
644 sdinfo->grp_id,
645 video, s_stream, 0);
646 if (ret && (ret != -ENOIOCTLCMD))
647 v4l2_err(&vpfe_dev->v4l2_dev,
648 "stream off failed in subdev\n");
649 vpfe_stop_ccdc_capture(vpfe_dev);
650 vpfe_detach_irq(vpfe_dev);
651 videobuf_streamoff(&vpfe_dev->buffer_queue);
652 }
653 vpfe_dev->io_usrs = 0;
654 vpfe_dev->numbuffers = config_params.numbuffers;
655 videobuf_stop(&vpfe_dev->buffer_queue);
656 videobuf_mmap_free(&vpfe_dev->buffer_queue);
657 }
658
659 /* Decrement device usrs counter */
660 vpfe_dev->usrs--;
661 v4l2_fh_del(&fh->fh);
662 v4l2_fh_exit(&fh->fh);
663 /* If this is the last file handle */
664 if (!vpfe_dev->usrs) {
665 vpfe_dev->initialized = 0;
666 if (ccdc_dev->hw_ops.close)
667 ccdc_dev->hw_ops.close(vpfe_dev->pdev);
668 module_put(ccdc_dev->owner);
669 }
670 mutex_unlock(&vpfe_dev->lock);
671 file->private_data = NULL;
672 /* Free memory allocated to file handle object */
673 kfree(fh);
674 return 0;
675 }
676
677 /*
678 * vpfe_mmap : It is used to map kernel space buffers
679 * into user spaces
680 */
681 static int vpfe_mmap(struct file *file, struct vm_area_struct *vma)
682 {
683 /* Get the device object and file handle object */
684 struct vpfe_device *vpfe_dev = video_drvdata(file);
685
686 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_mmap\n");
687
688 return videobuf_mmap_mapper(&vpfe_dev->buffer_queue, vma);
689 }
690
691 /*
692 * vpfe_poll: It is used for select/poll system call
693 */
694 static __poll_t vpfe_poll(struct file *file, poll_table *wait)
695 {
696 struct vpfe_device *vpfe_dev = video_drvdata(file);
697
698 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_poll\n");
699
700 if (vpfe_dev->started)
701 return videobuf_poll_stream(file,
702 &vpfe_dev->buffer_queue, wait);
703 return 0;
704 }
705
706 /* vpfe capture driver file operations */
707 static const struct v4l2_file_operations vpfe_fops = {
708 .owner = THIS_MODULE,
709 .open = vpfe_open,
710 .release = vpfe_release,
711 .unlocked_ioctl = video_ioctl2,
712 .mmap = vpfe_mmap,
713 .poll = vpfe_poll
714 };
715
716 /*
717 * vpfe_check_format()
718 * This function adjust the input pixel format as per hardware
719 * capabilities and update the same in pixfmt.
720 * Following algorithm used :-
721 *
722 * If given pixformat is not in the vpfe list of pix formats or not
723 * supported by the hardware, current value of pixformat in the device
724 * is used
725 * If given field is not supported, then current field is used. If field
726 * is different from current, then it is matched with that from sub device.
727 * Minimum height is 2 lines for interlaced or tb field and 1 line for
728 * progressive. Maximum height is clamped to active active lines of scan
729 * Minimum width is 32 bytes in memory and width is clamped to active
730 * pixels of scan.
731 * bytesperline is a multiple of 32.
732 */
733 static const struct vpfe_pixel_format *
734 vpfe_check_format(struct vpfe_device *vpfe_dev,
735 struct v4l2_pix_format *pixfmt)
736 {
737 u32 min_height = 1, min_width = 32, max_width, max_height;
738 const struct vpfe_pixel_format *vpfe_pix_fmt;
739 u32 pix;
740 int temp, found;
741
742 vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
743 if (!vpfe_pix_fmt) {
744 /*
745 * use current pixel format in the vpfe device. We
746 * will find this pix format in the table
747 */
748 pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
749 vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
750 }
751
752 /* check if hw supports it */
753 temp = 0;
754 found = 0;
755 while (ccdc_dev->hw_ops.enum_pix(&pix, temp) >= 0) {
756 if (vpfe_pix_fmt->pixelformat == pix) {
757 found = 1;
758 break;
759 }
760 temp++;
761 }
762
763 if (!found) {
764 /* use current pixel format */
765 pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
766 /*
767 * Since this is currently used in the vpfe device, we
768 * will find this pix format in the table
769 */
770 vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
771 }
772
773 /* check what field format is supported */
774 if (pixfmt->field == V4L2_FIELD_ANY) {
775 /* if field is any, use current value as default */
776 pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
777 }
778
779 /*
780 * if field is not same as current field in the vpfe device
781 * try matching the field with the sub device field
782 */
783 if (vpfe_dev->fmt.fmt.pix.field != pixfmt->field) {
784 /*
785 * If field value is not in the supported fields, use current
786 * field used in the device as default
787 */
788 switch (pixfmt->field) {
789 case V4L2_FIELD_INTERLACED:
790 case V4L2_FIELD_SEQ_TB:
791 /* if sub device is supporting progressive, use that */
792 if (!vpfe_dev->std_info.frame_format)
793 pixfmt->field = V4L2_FIELD_NONE;
794 break;
795 case V4L2_FIELD_NONE:
796 if (vpfe_dev->std_info.frame_format)
797 pixfmt->field = V4L2_FIELD_INTERLACED;
798 break;
799
800 default:
801 /* use current field as default */
802 pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
803 break;
804 }
805 }
806
807 /* Now adjust image resolutions supported */
808 if (pixfmt->field == V4L2_FIELD_INTERLACED ||
809 pixfmt->field == V4L2_FIELD_SEQ_TB)
810 min_height = 2;
811
812 max_width = vpfe_dev->std_info.active_pixels;
813 max_height = vpfe_dev->std_info.active_lines;
814 min_width /= vpfe_pix_fmt->bpp;
815
816 v4l2_info(&vpfe_dev->v4l2_dev, "width = %d, height = %d, bpp = %d\n",
817 pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp);
818
819 pixfmt->width = clamp((pixfmt->width), min_width, max_width);
820 pixfmt->height = clamp((pixfmt->height), min_height, max_height);
821
822 /* If interlaced, adjust height to be a multiple of 2 */
823 if (pixfmt->field == V4L2_FIELD_INTERLACED)
824 pixfmt->height &= (~1);
825 /*
826 * recalculate bytesperline and sizeimage since width
827 * and height might have changed
828 */
829 pixfmt->bytesperline = (((pixfmt->width * vpfe_pix_fmt->bpp) + 31)
830 & ~31);
831 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
832 pixfmt->sizeimage =
833 pixfmt->bytesperline * pixfmt->height +
834 ((pixfmt->bytesperline * pixfmt->height) >> 1);
835 else
836 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
837
838 v4l2_info(&vpfe_dev->v4l2_dev, "adjusted width = %d, height = %d, bpp = %d, bytesperline = %d, sizeimage = %d\n",
839 pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp,
840 pixfmt->bytesperline, pixfmt->sizeimage);
841 return vpfe_pix_fmt;
842 }
843
844 static int vpfe_querycap(struct file *file, void *priv,
845 struct v4l2_capability *cap)
846 {
847 struct vpfe_device *vpfe_dev = video_drvdata(file);
848
849 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querycap\n");
850
851 strscpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver));
852 strscpy(cap->bus_info, "VPFE", sizeof(cap->bus_info));
853 strscpy(cap->card, vpfe_dev->cfg->card_name, sizeof(cap->card));
854 return 0;
855 }
856
857 static int vpfe_g_fmt_vid_cap(struct file *file, void *priv,
858 struct v4l2_format *fmt)
859 {
860 struct vpfe_device *vpfe_dev = video_drvdata(file);
861
862 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_fmt_vid_cap\n");
863 /* Fill in the information about format */
864 *fmt = vpfe_dev->fmt;
865 return 0;
866 }
867
868 static int vpfe_enum_fmt_vid_cap(struct file *file, void *priv,
869 struct v4l2_fmtdesc *fmt)
870 {
871 struct vpfe_device *vpfe_dev = video_drvdata(file);
872 const struct vpfe_pixel_format *pix_fmt;
873 u32 pix;
874
875 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_fmt_vid_cap\n");
876
877 if (ccdc_dev->hw_ops.enum_pix(&pix, fmt->index) < 0)
878 return -EINVAL;
879
880 /* Fill in the information about format */
881 pix_fmt = vpfe_lookup_pix_format(pix);
882 if (pix_fmt) {
883 fmt->pixelformat = pix_fmt->pixelformat;
884 return 0;
885 }
886 return -EINVAL;
887 }
888
889 static int vpfe_s_fmt_vid_cap(struct file *file, void *priv,
890 struct v4l2_format *fmt)
891 {
892 struct vpfe_device *vpfe_dev = video_drvdata(file);
893 const struct vpfe_pixel_format *pix_fmts;
894 int ret;
895
896 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_fmt_vid_cap\n");
897
898 /* If streaming is started, return error */
899 if (vpfe_dev->started) {
900 v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is started\n");
901 return -EBUSY;
902 }
903
904 /* Check for valid frame format */
905 pix_fmts = vpfe_check_format(vpfe_dev, &fmt->fmt.pix);
906 if (!pix_fmts)
907 return -EINVAL;
908
909 /* store the pixel format in the device object */
910 ret = mutex_lock_interruptible(&vpfe_dev->lock);
911 if (ret)
912 return ret;
913
914 /* First detach any IRQ if currently attached */
915 vpfe_detach_irq(vpfe_dev);
916 vpfe_dev->fmt = *fmt;
917 /* set image capture parameters in the ccdc */
918 ret = vpfe_config_ccdc_image_format(vpfe_dev);
919 mutex_unlock(&vpfe_dev->lock);
920 return ret;
921 }
922
923 static int vpfe_try_fmt_vid_cap(struct file *file, void *priv,
924 struct v4l2_format *f)
925 {
926 struct vpfe_device *vpfe_dev = video_drvdata(file);
927 const struct vpfe_pixel_format *pix_fmts;
928
929 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_try_fmt_vid_cap\n");
930
931 pix_fmts = vpfe_check_format(vpfe_dev, &f->fmt.pix);
932 if (!pix_fmts)
933 return -EINVAL;
934 return 0;
935 }
936
937 /*
938 * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
939 * given app input index
940 */
941 static int vpfe_get_subdev_input_index(struct vpfe_device *vpfe_dev,
942 int *subdev_index,
943 int *subdev_input_index,
944 int app_input_index)
945 {
946 struct vpfe_config *cfg = vpfe_dev->cfg;
947 struct vpfe_subdev_info *sdinfo;
948 int i, j = 0;
949
950 for (i = 0; i < cfg->num_subdevs; i++) {
951 sdinfo = &cfg->sub_devs[i];
952 if (app_input_index < (j + sdinfo->num_inputs)) {
953 *subdev_index = i;
954 *subdev_input_index = app_input_index - j;
955 return 0;
956 }
957 j += sdinfo->num_inputs;
958 }
959 return -EINVAL;
960 }
961
962 /*
963 * vpfe_get_app_input - Get app input index for a given subdev input index
964 * driver stores the input index of the current sub device and translate it
965 * when application request the current input
966 */
967 static int vpfe_get_app_input_index(struct vpfe_device *vpfe_dev,
968 int *app_input_index)
969 {
970 struct vpfe_config *cfg = vpfe_dev->cfg;
971 struct vpfe_subdev_info *sdinfo;
972 int i, j = 0;
973
974 for (i = 0; i < cfg->num_subdevs; i++) {
975 sdinfo = &cfg->sub_devs[i];
976 if (!strcmp(sdinfo->name, vpfe_dev->current_subdev->name)) {
977 if (vpfe_dev->current_input >= sdinfo->num_inputs)
978 return -1;
979 *app_input_index = j + vpfe_dev->current_input;
980 return 0;
981 }
982 j += sdinfo->num_inputs;
983 }
984 return -EINVAL;
985 }
986
987 static int vpfe_enum_input(struct file *file, void *priv,
988 struct v4l2_input *inp)
989 {
990 struct vpfe_device *vpfe_dev = video_drvdata(file);
991 struct vpfe_subdev_info *sdinfo;
992 int subdev, index ;
993
994 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_input\n");
995
996 if (vpfe_get_subdev_input_index(vpfe_dev,
997 &subdev,
998 &index,
999 inp->index) < 0) {
1000 v4l2_err(&vpfe_dev->v4l2_dev, "input information not found for the subdev\n");
1001 return -EINVAL;
1002 }
1003 sdinfo = &vpfe_dev->cfg->sub_devs[subdev];
1004 *inp = sdinfo->inputs[index];
1005 return 0;
1006 }
1007
1008 static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
1009 {
1010 struct vpfe_device *vpfe_dev = video_drvdata(file);
1011
1012 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_input\n");
1013
1014 return vpfe_get_app_input_index(vpfe_dev, index);
1015 }
1016
1017
1018 static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
1019 {
1020 struct vpfe_device *vpfe_dev = video_drvdata(file);
1021 struct v4l2_subdev *sd;
1022 struct vpfe_subdev_info *sdinfo;
1023 int subdev_index, inp_index;
1024 struct vpfe_route *route;
1025 u32 input, output;
1026 int ret;
1027
1028 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_input\n");
1029
1030 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1031 if (ret)
1032 return ret;
1033
1034 /*
1035 * If streaming is started return device busy
1036 * error
1037 */
1038 if (vpfe_dev->started) {
1039 v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is on\n");
1040 ret = -EBUSY;
1041 goto unlock_out;
1042 }
1043 ret = vpfe_get_subdev_input_index(vpfe_dev,
1044 &subdev_index,
1045 &inp_index,
1046 index);
1047 if (ret < 0) {
1048 v4l2_err(&vpfe_dev->v4l2_dev, "invalid input index\n");
1049 goto unlock_out;
1050 }
1051
1052 sdinfo = &vpfe_dev->cfg->sub_devs[subdev_index];
1053 sd = vpfe_dev->sd[subdev_index];
1054 route = &sdinfo->routes[inp_index];
1055 if (route && sdinfo->can_route) {
1056 input = route->input;
1057 output = route->output;
1058 } else {
1059 input = 0;
1060 output = 0;
1061 }
1062
1063 if (sd)
1064 ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0);
1065
1066 if (ret) {
1067 v4l2_err(&vpfe_dev->v4l2_dev,
1068 "vpfe_doioctl:error in setting input in decoder\n");
1069 ret = -EINVAL;
1070 goto unlock_out;
1071 }
1072 vpfe_dev->current_subdev = sdinfo;
1073 if (sd)
1074 vpfe_dev->v4l2_dev.ctrl_handler = sd->ctrl_handler;
1075 vpfe_dev->current_input = index;
1076 vpfe_dev->std_index = 0;
1077
1078 /* set the bus/interface parameter for the sub device in ccdc */
1079 ret = ccdc_dev->hw_ops.set_hw_if_params(&sdinfo->ccdc_if_params);
1080 if (ret)
1081 goto unlock_out;
1082
1083 /* set the default image parameters in the device */
1084 ret = vpfe_config_image_format(vpfe_dev,
1085 vpfe_standards[vpfe_dev->std_index].std_id);
1086 unlock_out:
1087 mutex_unlock(&vpfe_dev->lock);
1088 return ret;
1089 }
1090
1091 static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
1092 {
1093 struct vpfe_device *vpfe_dev = video_drvdata(file);
1094 struct vpfe_subdev_info *sdinfo;
1095 int ret;
1096
1097 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querystd\n");
1098
1099 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1100 sdinfo = vpfe_dev->current_subdev;
1101 if (ret)
1102 return ret;
1103 /* Call querystd function of decoder device */
1104 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1105 video, querystd, std_id);
1106 mutex_unlock(&vpfe_dev->lock);
1107 return ret;
1108 }
1109
1110 static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id)
1111 {
1112 struct vpfe_device *vpfe_dev = video_drvdata(file);
1113 struct vpfe_subdev_info *sdinfo;
1114 int ret;
1115
1116 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_std\n");
1117
1118 /* Call decoder driver function to set the standard */
1119 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1120 if (ret)
1121 return ret;
1122
1123 sdinfo = vpfe_dev->current_subdev;
1124 /* If streaming is started, return device busy error */
1125 if (vpfe_dev->started) {
1126 v4l2_err(&vpfe_dev->v4l2_dev, "streaming is started\n");
1127 ret = -EBUSY;
1128 goto unlock_out;
1129 }
1130
1131 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1132 video, s_std, std_id);
1133 if (ret < 0) {
1134 v4l2_err(&vpfe_dev->v4l2_dev, "Failed to set standard\n");
1135 goto unlock_out;
1136 }
1137 ret = vpfe_config_image_format(vpfe_dev, std_id);
1138
1139 unlock_out:
1140 mutex_unlock(&vpfe_dev->lock);
1141 return ret;
1142 }
1143
1144 static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
1145 {
1146 struct vpfe_device *vpfe_dev = video_drvdata(file);
1147
1148 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_std\n");
1149
1150 *std_id = vpfe_standards[vpfe_dev->std_index].std_id;
1151 return 0;
1152 }
1153 /*
1154 * Videobuf operations
1155 */
1156 static int vpfe_videobuf_setup(struct videobuf_queue *vq,
1157 unsigned int *count,
1158 unsigned int *size)
1159 {
1160 struct vpfe_fh *fh = vq->priv_data;
1161 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1162
1163 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_setup\n");
1164 *size = vpfe_dev->fmt.fmt.pix.sizeimage;
1165 if (vpfe_dev->memory == V4L2_MEMORY_MMAP &&
1166 vpfe_dev->fmt.fmt.pix.sizeimage > config_params.device_bufsize)
1167 *size = config_params.device_bufsize;
1168
1169 if (*count < config_params.min_numbuffers)
1170 *count = config_params.min_numbuffers;
1171 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1172 "count=%d, size=%d\n", *count, *size);
1173 return 0;
1174 }
1175
1176 static int vpfe_videobuf_prepare(struct videobuf_queue *vq,
1177 struct videobuf_buffer *vb,
1178 enum v4l2_field field)
1179 {
1180 struct vpfe_fh *fh = vq->priv_data;
1181 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1182 unsigned long addr;
1183 int ret;
1184
1185 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n");
1186
1187 /* If buffer is not initialized, initialize it */
1188 if (VIDEOBUF_NEEDS_INIT == vb->state) {
1189 vb->width = vpfe_dev->fmt.fmt.pix.width;
1190 vb->height = vpfe_dev->fmt.fmt.pix.height;
1191 vb->size = vpfe_dev->fmt.fmt.pix.sizeimage;
1192 vb->field = field;
1193
1194 ret = videobuf_iolock(vq, vb, NULL);
1195 if (ret < 0)
1196 return ret;
1197
1198 addr = videobuf_to_dma_contig(vb);
1199 /* Make sure user addresses are aligned to 32 bytes */
1200 if (!ALIGN(addr, 32))
1201 return -EINVAL;
1202
1203 vb->state = VIDEOBUF_PREPARED;
1204 }
1205 return 0;
1206 }
1207
1208 static void vpfe_videobuf_queue(struct videobuf_queue *vq,
1209 struct videobuf_buffer *vb)
1210 {
1211 /* Get the file handle object and device object */
1212 struct vpfe_fh *fh = vq->priv_data;
1213 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1214 unsigned long flags;
1215
1216 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_queue\n");
1217
1218 /* add the buffer to the DMA queue */
1219 spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
1220 list_add_tail(&vb->queue, &vpfe_dev->dma_queue);
1221 spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
1222
1223 /* Change state of the buffer */
1224 vb->state = VIDEOBUF_QUEUED;
1225 }
1226
1227 static void vpfe_videobuf_release(struct videobuf_queue *vq,
1228 struct videobuf_buffer *vb)
1229 {
1230 struct vpfe_fh *fh = vq->priv_data;
1231 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1232 unsigned long flags;
1233
1234 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_videobuf_release\n");
1235
1236 /*
1237 * We need to flush the buffer from the dma queue since
1238 * they are de-allocated
1239 */
1240 spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
1241 INIT_LIST_HEAD(&vpfe_dev->dma_queue);
1242 spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
1243 videobuf_dma_contig_free(vq, vb);
1244 vb->state = VIDEOBUF_NEEDS_INIT;
1245 }
1246
1247 static const struct videobuf_queue_ops vpfe_videobuf_qops = {
1248 .buf_setup = vpfe_videobuf_setup,
1249 .buf_prepare = vpfe_videobuf_prepare,
1250 .buf_queue = vpfe_videobuf_queue,
1251 .buf_release = vpfe_videobuf_release,
1252 };
1253
1254 /*
1255 * vpfe_reqbufs. currently support REQBUF only once opening
1256 * the device.
1257 */
1258 static int vpfe_reqbufs(struct file *file, void *priv,
1259 struct v4l2_requestbuffers *req_buf)
1260 {
1261 struct vpfe_device *vpfe_dev = video_drvdata(file);
1262 struct vpfe_fh *fh = file->private_data;
1263 int ret;
1264
1265 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs\n");
1266
1267 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != req_buf->type) {
1268 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buffer type\n");
1269 return -EINVAL;
1270 }
1271
1272 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1273 if (ret)
1274 return ret;
1275
1276 if (vpfe_dev->io_usrs != 0) {
1277 v4l2_err(&vpfe_dev->v4l2_dev, "Only one IO user allowed\n");
1278 ret = -EBUSY;
1279 goto unlock_out;
1280 }
1281
1282 vpfe_dev->memory = req_buf->memory;
1283 videobuf_queue_dma_contig_init(&vpfe_dev->buffer_queue,
1284 &vpfe_videobuf_qops,
1285 vpfe_dev->pdev,
1286 &vpfe_dev->irqlock,
1287 req_buf->type,
1288 vpfe_dev->fmt.fmt.pix.field,
1289 sizeof(struct videobuf_buffer),
1290 fh, NULL);
1291
1292 fh->io_allowed = 1;
1293 vpfe_dev->io_usrs = 1;
1294 INIT_LIST_HEAD(&vpfe_dev->dma_queue);
1295 ret = videobuf_reqbufs(&vpfe_dev->buffer_queue, req_buf);
1296 unlock_out:
1297 mutex_unlock(&vpfe_dev->lock);
1298 return ret;
1299 }
1300
1301 static int vpfe_querybuf(struct file *file, void *priv,
1302 struct v4l2_buffer *buf)
1303 {
1304 struct vpfe_device *vpfe_dev = video_drvdata(file);
1305
1306 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querybuf\n");
1307
1308 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
1309 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1310 return -EINVAL;
1311 }
1312
1313 if (vpfe_dev->memory != V4L2_MEMORY_MMAP) {
1314 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid memory\n");
1315 return -EINVAL;
1316 }
1317 /* Call videobuf_querybuf to get information */
1318 return videobuf_querybuf(&vpfe_dev->buffer_queue, buf);
1319 }
1320
1321 static int vpfe_qbuf(struct file *file, void *priv,
1322 struct v4l2_buffer *p)
1323 {
1324 struct vpfe_device *vpfe_dev = video_drvdata(file);
1325 struct vpfe_fh *fh = file->private_data;
1326
1327 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_qbuf\n");
1328
1329 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != p->type) {
1330 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1331 return -EINVAL;
1332 }
1333
1334 /*
1335 * If this file handle is not allowed to do IO,
1336 * return error
1337 */
1338 if (!fh->io_allowed) {
1339 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1340 return -EACCES;
1341 }
1342 return videobuf_qbuf(&vpfe_dev->buffer_queue, p);
1343 }
1344
1345 static int vpfe_dqbuf(struct file *file, void *priv,
1346 struct v4l2_buffer *buf)
1347 {
1348 struct vpfe_device *vpfe_dev = video_drvdata(file);
1349
1350 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_dqbuf\n");
1351
1352 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
1353 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1354 return -EINVAL;
1355 }
1356 return videobuf_dqbuf(&vpfe_dev->buffer_queue,
1357 buf, file->f_flags & O_NONBLOCK);
1358 }
1359
1360 /*
1361 * vpfe_calculate_offsets : This function calculates buffers offset
1362 * for top and bottom field
1363 */
1364 static void vpfe_calculate_offsets(struct vpfe_device *vpfe_dev)
1365 {
1366 struct v4l2_rect image_win;
1367
1368 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_calculate_offsets\n");
1369
1370 ccdc_dev->hw_ops.get_image_window(&image_win);
1371 vpfe_dev->field_off = image_win.height * image_win.width;
1372 }
1373
1374 /* vpfe_start_ccdc_capture: start streaming in ccdc/isif */
1375 static void vpfe_start_ccdc_capture(struct vpfe_device *vpfe_dev)
1376 {
1377 ccdc_dev->hw_ops.enable(1);
1378 if (ccdc_dev->hw_ops.enable_out_to_sdram)
1379 ccdc_dev->hw_ops.enable_out_to_sdram(1);
1380 vpfe_dev->started = 1;
1381 }
1382
1383 /*
1384 * vpfe_streamon. Assume the DMA queue is not empty.
1385 * application is expected to call QBUF before calling
1386 * this ioctl. If not, driver returns error
1387 */
1388 static int vpfe_streamon(struct file *file, void *priv,
1389 enum v4l2_buf_type buf_type)
1390 {
1391 struct vpfe_device *vpfe_dev = video_drvdata(file);
1392 struct vpfe_fh *fh = file->private_data;
1393 struct vpfe_subdev_info *sdinfo;
1394 unsigned long addr;
1395 int ret;
1396
1397 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamon\n");
1398
1399 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
1400 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1401 return -EINVAL;
1402 }
1403
1404 /* If file handle is not allowed IO, return error */
1405 if (!fh->io_allowed) {
1406 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1407 return -EACCES;
1408 }
1409
1410 sdinfo = vpfe_dev->current_subdev;
1411 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1412 video, s_stream, 1);
1413
1414 if (ret && (ret != -ENOIOCTLCMD)) {
1415 v4l2_err(&vpfe_dev->v4l2_dev, "stream on failed in subdev\n");
1416 return -EINVAL;
1417 }
1418
1419 /* If buffer queue is empty, return error */
1420 if (list_empty(&vpfe_dev->buffer_queue.stream)) {
1421 v4l2_err(&vpfe_dev->v4l2_dev, "buffer queue is empty\n");
1422 return -EIO;
1423 }
1424
1425 /* Call videobuf_streamon to start streaming * in videobuf */
1426 ret = videobuf_streamon(&vpfe_dev->buffer_queue);
1427 if (ret)
1428 return ret;
1429
1430
1431 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1432 if (ret)
1433 goto streamoff;
1434 /* Get the next frame from the buffer queue */
1435 vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
1436 struct videobuf_buffer, queue);
1437 vpfe_dev->cur_frm = vpfe_dev->next_frm;
1438 /* Remove buffer from the buffer queue */
1439 list_del(&vpfe_dev->cur_frm->queue);
1440 /* Mark state of the current frame to active */
1441 vpfe_dev->cur_frm->state = VIDEOBUF_ACTIVE;
1442 /* Initialize field_id and started member */
1443 vpfe_dev->field_id = 0;
1444 addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
1445
1446 /* Calculate field offset */
1447 vpfe_calculate_offsets(vpfe_dev);
1448
1449 if (vpfe_attach_irq(vpfe_dev) < 0) {
1450 v4l2_err(&vpfe_dev->v4l2_dev,
1451 "Error in attaching interrupt handle\n");
1452 ret = -EFAULT;
1453 goto unlock_out;
1454 }
1455 if (ccdc_dev->hw_ops.configure() < 0) {
1456 v4l2_err(&vpfe_dev->v4l2_dev,
1457 "Error in configuring ccdc\n");
1458 ret = -EINVAL;
1459 goto unlock_out;
1460 }
1461 ccdc_dev->hw_ops.setfbaddr((unsigned long)(addr));
1462 vpfe_start_ccdc_capture(vpfe_dev);
1463 mutex_unlock(&vpfe_dev->lock);
1464 return ret;
1465 unlock_out:
1466 mutex_unlock(&vpfe_dev->lock);
1467 streamoff:
1468 videobuf_streamoff(&vpfe_dev->buffer_queue);
1469 return ret;
1470 }
1471
1472 static int vpfe_streamoff(struct file *file, void *priv,
1473 enum v4l2_buf_type buf_type)
1474 {
1475 struct vpfe_device *vpfe_dev = video_drvdata(file);
1476 struct vpfe_fh *fh = file->private_data;
1477 struct vpfe_subdev_info *sdinfo;
1478 int ret;
1479
1480 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamoff\n");
1481
1482 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
1483 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1484 return -EINVAL;
1485 }
1486
1487 /* If io is allowed for this file handle, return error */
1488 if (!fh->io_allowed) {
1489 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1490 return -EACCES;
1491 }
1492
1493 /* If streaming is not started, return error */
1494 if (!vpfe_dev->started) {
1495 v4l2_err(&vpfe_dev->v4l2_dev, "device started\n");
1496 return -EINVAL;
1497 }
1498
1499 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1500 if (ret)
1501 return ret;
1502
1503 vpfe_stop_ccdc_capture(vpfe_dev);
1504 vpfe_detach_irq(vpfe_dev);
1505
1506 sdinfo = vpfe_dev->current_subdev;
1507 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1508 video, s_stream, 0);
1509
1510 if (ret && (ret != -ENOIOCTLCMD))
1511 v4l2_err(&vpfe_dev->v4l2_dev, "stream off failed in subdev\n");
1512 ret = videobuf_streamoff(&vpfe_dev->buffer_queue);
1513 mutex_unlock(&vpfe_dev->lock);
1514 return ret;
1515 }
1516
1517 static int vpfe_g_pixelaspect(struct file *file, void *priv,
1518 int type, struct v4l2_fract *f)
1519 {
1520 struct vpfe_device *vpfe_dev = video_drvdata(file);
1521
1522 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_pixelaspect\n");
1523
1524 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1525 return -EINVAL;
1526 /* If std_index is invalid, then just return (== 1:1 aspect) */
1527 if (vpfe_dev->std_index >= ARRAY_SIZE(vpfe_standards))
1528 return 0;
1529
1530 *f = vpfe_standards[vpfe_dev->std_index].pixelaspect;
1531 return 0;
1532 }
1533
1534 static int vpfe_g_selection(struct file *file, void *priv,
1535 struct v4l2_selection *sel)
1536 {
1537 struct vpfe_device *vpfe_dev = video_drvdata(file);
1538
1539 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_selection\n");
1540
1541 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1542 return -EINVAL;
1543
1544 switch (sel->target) {
1545 case V4L2_SEL_TGT_CROP:
1546 sel->r = vpfe_dev->crop;
1547 break;
1548 case V4L2_SEL_TGT_CROP_DEFAULT:
1549 case V4L2_SEL_TGT_CROP_BOUNDS:
1550 sel->r.width = vpfe_standards[vpfe_dev->std_index].width;
1551 sel->r.height = vpfe_standards[vpfe_dev->std_index].height;
1552 break;
1553 default:
1554 return -EINVAL;
1555 }
1556 return 0;
1557 }
1558
1559 static int vpfe_s_selection(struct file *file, void *priv,
1560 struct v4l2_selection *sel)
1561 {
1562 struct vpfe_device *vpfe_dev = video_drvdata(file);
1563 struct v4l2_rect rect = sel->r;
1564 int ret;
1565
1566 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_selection\n");
1567
1568 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1569 sel->target != V4L2_SEL_TGT_CROP)
1570 return -EINVAL;
1571
1572 if (vpfe_dev->started) {
1573 /* make sure streaming is not started */
1574 v4l2_err(&vpfe_dev->v4l2_dev,
1575 "Cannot change crop when streaming is ON\n");
1576 return -EBUSY;
1577 }
1578
1579 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1580 if (ret)
1581 return ret;
1582
1583 if (rect.top < 0 || rect.left < 0) {
1584 v4l2_err(&vpfe_dev->v4l2_dev,
1585 "doesn't support negative values for top & left\n");
1586 ret = -EINVAL;
1587 goto unlock_out;
1588 }
1589
1590 /* adjust the width to 16 pixel boundary */
1591 rect.width = ((rect.width + 15) & ~0xf);
1592
1593 /* make sure parameters are valid */
1594 if ((rect.left + rect.width >
1595 vpfe_dev->std_info.active_pixels) ||
1596 (rect.top + rect.height >
1597 vpfe_dev->std_info.active_lines)) {
1598 v4l2_err(&vpfe_dev->v4l2_dev, "Error in S_SELECTION params\n");
1599 ret = -EINVAL;
1600 goto unlock_out;
1601 }
1602 ccdc_dev->hw_ops.set_image_window(&rect);
1603 vpfe_dev->fmt.fmt.pix.width = rect.width;
1604 vpfe_dev->fmt.fmt.pix.height = rect.height;
1605 vpfe_dev->fmt.fmt.pix.bytesperline =
1606 ccdc_dev->hw_ops.get_line_length();
1607 vpfe_dev->fmt.fmt.pix.sizeimage =
1608 vpfe_dev->fmt.fmt.pix.bytesperline *
1609 vpfe_dev->fmt.fmt.pix.height;
1610 vpfe_dev->crop = rect;
1611 sel->r = rect;
1612 unlock_out:
1613 mutex_unlock(&vpfe_dev->lock);
1614 return ret;
1615 }
1616
1617 /* vpfe capture ioctl operations */
1618 static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
1619 .vidioc_querycap = vpfe_querycap,
1620 .vidioc_g_fmt_vid_cap = vpfe_g_fmt_vid_cap,
1621 .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt_vid_cap,
1622 .vidioc_s_fmt_vid_cap = vpfe_s_fmt_vid_cap,
1623 .vidioc_try_fmt_vid_cap = vpfe_try_fmt_vid_cap,
1624 .vidioc_enum_input = vpfe_enum_input,
1625 .vidioc_g_input = vpfe_g_input,
1626 .vidioc_s_input = vpfe_s_input,
1627 .vidioc_querystd = vpfe_querystd,
1628 .vidioc_s_std = vpfe_s_std,
1629 .vidioc_g_std = vpfe_g_std,
1630 .vidioc_reqbufs = vpfe_reqbufs,
1631 .vidioc_querybuf = vpfe_querybuf,
1632 .vidioc_qbuf = vpfe_qbuf,
1633 .vidioc_dqbuf = vpfe_dqbuf,
1634 .vidioc_streamon = vpfe_streamon,
1635 .vidioc_streamoff = vpfe_streamoff,
1636 .vidioc_g_pixelaspect = vpfe_g_pixelaspect,
1637 .vidioc_g_selection = vpfe_g_selection,
1638 .vidioc_s_selection = vpfe_s_selection,
1639 };
1640
1641 static struct vpfe_device *vpfe_initialize(void)
1642 {
1643 struct vpfe_device *vpfe_dev;
1644
1645 /* Default number of buffers should be 3 */
1646 if ((numbuffers > 0) &&
1647 (numbuffers < config_params.min_numbuffers))
1648 numbuffers = config_params.min_numbuffers;
1649
1650 /*
1651 * Set buffer size to min buffers size if invalid buffer size is
1652 * given
1653 */
1654 if (bufsize < config_params.min_bufsize)
1655 bufsize = config_params.min_bufsize;
1656
1657 config_params.numbuffers = numbuffers;
1658
1659 if (numbuffers)
1660 config_params.device_bufsize = bufsize;
1661
1662 /* Allocate memory for device objects */
1663 vpfe_dev = kzalloc(sizeof(*vpfe_dev), GFP_KERNEL);
1664
1665 return vpfe_dev;
1666 }
1667
1668 /*
1669 * vpfe_probe : This function creates device entries by register
1670 * itself to the V4L2 driver and initializes fields of each
1671 * device objects
1672 */
1673 static int vpfe_probe(struct platform_device *pdev)
1674 {
1675 struct vpfe_subdev_info *sdinfo;
1676 struct vpfe_config *vpfe_cfg;
1677 struct resource *res1;
1678 struct vpfe_device *vpfe_dev;
1679 struct i2c_adapter *i2c_adap;
1680 struct video_device *vfd;
1681 int ret, i, j;
1682 int num_subdevs = 0;
1683
1684 /* Get the pointer to the device object */
1685 vpfe_dev = vpfe_initialize();
1686
1687 if (!vpfe_dev) {
1688 v4l2_err(pdev->dev.driver,
1689 "Failed to allocate memory for vpfe_dev\n");
1690 return -ENOMEM;
1691 }
1692
1693 vpfe_dev->pdev = &pdev->dev;
1694
1695 if (!pdev->dev.platform_data) {
1696 v4l2_err(pdev->dev.driver, "Unable to get vpfe config\n");
1697 ret = -ENODEV;
1698 goto probe_free_dev_mem;
1699 }
1700
1701 vpfe_cfg = pdev->dev.platform_data;
1702 vpfe_dev->cfg = vpfe_cfg;
1703 if (!vpfe_cfg->ccdc || !vpfe_cfg->card_name || !vpfe_cfg->sub_devs) {
1704 v4l2_err(pdev->dev.driver, "null ptr in vpfe_cfg\n");
1705 ret = -ENOENT;
1706 goto probe_free_dev_mem;
1707 }
1708
1709 /* Allocate memory for ccdc configuration */
1710 ccdc_cfg = kmalloc(sizeof(*ccdc_cfg), GFP_KERNEL);
1711 if (!ccdc_cfg) {
1712 ret = -ENOMEM;
1713 goto probe_free_dev_mem;
1714 }
1715
1716 mutex_lock(&ccdc_lock);
1717
1718 strscpy(ccdc_cfg->name, vpfe_cfg->ccdc, sizeof(ccdc_cfg->name));
1719 /* Get VINT0 irq resource */
1720 res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1721 if (!res1) {
1722 v4l2_err(pdev->dev.driver,
1723 "Unable to get interrupt for VINT0\n");
1724 ret = -ENODEV;
1725 goto probe_free_ccdc_cfg_mem;
1726 }
1727 vpfe_dev->ccdc_irq0 = res1->start;
1728
1729 /* Get VINT1 irq resource */
1730 res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
1731 if (!res1) {
1732 v4l2_err(pdev->dev.driver,
1733 "Unable to get interrupt for VINT1\n");
1734 ret = -ENODEV;
1735 goto probe_free_ccdc_cfg_mem;
1736 }
1737 vpfe_dev->ccdc_irq1 = res1->start;
1738
1739 ret = request_irq(vpfe_dev->ccdc_irq0, vpfe_isr, 0,
1740 "vpfe_capture0", vpfe_dev);
1741
1742 if (0 != ret) {
1743 v4l2_err(pdev->dev.driver, "Unable to request interrupt\n");
1744 goto probe_free_ccdc_cfg_mem;
1745 }
1746
1747 vfd = &vpfe_dev->video_dev;
1748 /* Initialize field of video device */
1749 vfd->release = video_device_release_empty;
1750 vfd->fops = &vpfe_fops;
1751 vfd->ioctl_ops = &vpfe_ioctl_ops;
1752 vfd->tvnorms = 0;
1753 vfd->v4l2_dev = &vpfe_dev->v4l2_dev;
1754 vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1755 snprintf(vfd->name, sizeof(vfd->name),
1756 "%s_V%d.%d.%d",
1757 CAPTURE_DRV_NAME,
1758 (VPFE_CAPTURE_VERSION_CODE >> 16) & 0xff,
1759 (VPFE_CAPTURE_VERSION_CODE >> 8) & 0xff,
1760 (VPFE_CAPTURE_VERSION_CODE) & 0xff);
1761
1762 ret = v4l2_device_register(&pdev->dev, &vpfe_dev->v4l2_dev);
1763 if (ret) {
1764 v4l2_err(pdev->dev.driver,
1765 "Unable to register v4l2 device.\n");
1766 goto probe_out_release_irq;
1767 }
1768 v4l2_info(&vpfe_dev->v4l2_dev, "v4l2 device registered\n");
1769 spin_lock_init(&vpfe_dev->irqlock);
1770 spin_lock_init(&vpfe_dev->dma_queue_lock);
1771 mutex_init(&vpfe_dev->lock);
1772
1773 /* Initialize field of the device objects */
1774 vpfe_dev->numbuffers = config_params.numbuffers;
1775
1776 /* register video device */
1777 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1778 "trying to register vpfe device.\n");
1779 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1780 "video_dev=%p\n", &vpfe_dev->video_dev);
1781 vpfe_dev->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1782 ret = video_register_device(&vpfe_dev->video_dev,
1783 VFL_TYPE_VIDEO, -1);
1784
1785 if (ret) {
1786 v4l2_err(pdev->dev.driver,
1787 "Unable to register video device.\n");
1788 goto probe_out_v4l2_unregister;
1789 }
1790
1791 v4l2_info(&vpfe_dev->v4l2_dev, "video device registered\n");
1792 /* set the driver data in platform device */
1793 platform_set_drvdata(pdev, vpfe_dev);
1794 /* set driver private data */
1795 video_set_drvdata(&vpfe_dev->video_dev, vpfe_dev);
1796 i2c_adap = i2c_get_adapter(vpfe_cfg->i2c_adapter_id);
1797 num_subdevs = vpfe_cfg->num_subdevs;
1798 vpfe_dev->sd = kmalloc_array(num_subdevs,
1799 sizeof(*vpfe_dev->sd),
1800 GFP_KERNEL);
1801 if (!vpfe_dev->sd) {
1802 ret = -ENOMEM;
1803 goto probe_out_video_unregister;
1804 }
1805
1806 for (i = 0; i < num_subdevs; i++) {
1807 struct v4l2_input *inps;
1808
1809 sdinfo = &vpfe_cfg->sub_devs[i];
1810
1811 /* Load up the subdevice */
1812 vpfe_dev->sd[i] =
1813 v4l2_i2c_new_subdev_board(&vpfe_dev->v4l2_dev,
1814 i2c_adap,
1815 &sdinfo->board_info,
1816 NULL);
1817 if (vpfe_dev->sd[i]) {
1818 v4l2_info(&vpfe_dev->v4l2_dev,
1819 "v4l2 sub device %s registered\n",
1820 sdinfo->name);
1821 vpfe_dev->sd[i]->grp_id = sdinfo->grp_id;
1822 /* update tvnorms from the sub devices */
1823 for (j = 0; j < sdinfo->num_inputs; j++) {
1824 inps = &sdinfo->inputs[j];
1825 vfd->tvnorms |= inps->std;
1826 }
1827 } else {
1828 v4l2_info(&vpfe_dev->v4l2_dev,
1829 "v4l2 sub device %s register fails\n",
1830 sdinfo->name);
1831 ret = -ENXIO;
1832 goto probe_sd_out;
1833 }
1834 }
1835
1836 /* set first sub device as current one */
1837 vpfe_dev->current_subdev = &vpfe_cfg->sub_devs[0];
1838 vpfe_dev->v4l2_dev.ctrl_handler = vpfe_dev->sd[0]->ctrl_handler;
1839
1840 /* We have at least one sub device to work with */
1841 mutex_unlock(&ccdc_lock);
1842 return 0;
1843
1844 probe_sd_out:
1845 kfree(vpfe_dev->sd);
1846 probe_out_video_unregister:
1847 video_unregister_device(&vpfe_dev->video_dev);
1848 probe_out_v4l2_unregister:
1849 v4l2_device_unregister(&vpfe_dev->v4l2_dev);
1850 probe_out_release_irq:
1851 free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
1852 probe_free_ccdc_cfg_mem:
1853 kfree(ccdc_cfg);
1854 mutex_unlock(&ccdc_lock);
1855 probe_free_dev_mem:
1856 kfree(vpfe_dev);
1857 return ret;
1858 }
1859
1860 /*
1861 * vpfe_remove : It un-register device from V4L2 driver
1862 */
1863 static int vpfe_remove(struct platform_device *pdev)
1864 {
1865 struct vpfe_device *vpfe_dev = platform_get_drvdata(pdev);
1866
1867 v4l2_info(pdev->dev.driver, "vpfe_remove\n");
1868
1869 free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
1870 kfree(vpfe_dev->sd);
1871 v4l2_device_unregister(&vpfe_dev->v4l2_dev);
1872 video_unregister_device(&vpfe_dev->video_dev);
1873 kfree(vpfe_dev);
1874 kfree(ccdc_cfg);
1875 return 0;
1876 }
1877
1878 static int vpfe_suspend(struct device *dev)
1879 {
1880 return 0;
1881 }
1882
1883 static int vpfe_resume(struct device *dev)
1884 {
1885 return 0;
1886 }
1887
1888 static const struct dev_pm_ops vpfe_dev_pm_ops = {
1889 .suspend = vpfe_suspend,
1890 .resume = vpfe_resume,
1891 };
1892
1893 static struct platform_driver vpfe_driver = {
1894 .driver = {
1895 .name = CAPTURE_DRV_NAME,
1896 .pm = &vpfe_dev_pm_ops,
1897 },
1898 .probe = vpfe_probe,
1899 .remove = vpfe_remove,
1900 };
1901
1902 module_platform_driver(vpfe_driver);
Linux with added FPC-III support