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[net-next-2.6.git] / drivers / media / video / davinci / vpfe_capture.c
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7da8a6cb
MK		 1/*
2 * Copyright (C) 2008-2009 Texas Instruments Inc
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * Driver name : VPFE Capture driver
19 * VPFE Capture driver allows applications to capture and stream video
20 * frames on DaVinci SoCs (DM6446, DM355 etc) from a YUV source such as
21 * TVP5146 or Raw Bayer RGB image data from an image sensor
22 * such as Microns' MT9T001, MT9T031 etc.
23 *
24 * These SoCs have, in common, a Video Processing Subsystem (VPSS) that
25 * consists of a Video Processing Front End (VPFE) for capturing
26 * video/raw image data and Video Processing Back End (VPBE) for displaying
27 * YUV data through an in-built analog encoder or Digital LCD port. This
28 * driver is for capture through VPFE. A typical EVM using these SoCs have
29 * following high level configuration.
30 *
31 *
32 * decoder(TVP5146/ YUV/
33 * MT9T001) --> Raw Bayer RGB ---> MUX -> VPFE (CCDC/ISIF)
34 * data input | |
35 * V |
36 * SDRAM |
37 * V
38 * Image Processor
39 * |
40 * V
41 * SDRAM
42 * The data flow happens from a decoder connected to the VPFE over a
43 * YUV embedded (BT.656/BT.1120) or separate sync or raw bayer rgb interface
44 * and to the input of VPFE through an optional MUX (if more inputs are
45 * to be interfaced on the EVM). The input data is first passed through
46 * CCDC (CCD Controller, a.k.a Image Sensor Interface, ISIF). The CCDC
47 * does very little or no processing on YUV data and does pre-process Raw
48 * Bayer RGB data through modules such as Defect Pixel Correction (DFC)
49 * Color Space Conversion (CSC), data gain/offset etc. After this, data
50 * can be written to SDRAM or can be connected to the image processing
51 * block such as IPIPE (on DM355 only).
52 *
53 * Features supported
54 * - MMAP IO
55 * - Capture using TVP5146 over BT.656
56 * - support for interfacing decoders using sub device model
57 * - Work with DM355 or DM6446 CCDC to do Raw Bayer RGB/YUV
58 * data capture to SDRAM.
59 * TODO list
60 * - Support multiple REQBUF after open
61 * - Support for de-allocating buffers through REQBUF
62 * - Support for Raw Bayer RGB capture
63 * - Support for chaining Image Processor
64 * - Support for static allocation of buffers
65 * - Support for USERPTR IO
66 * - Support for STREAMON before QBUF
67 * - Support for control ioctls
68 */
69#include <linux/module.h>
5a0e3ad6 70#include <linux/slab.h>
7da8a6cb
MK		 71#include <linux/init.h>
72#include <linux/platform_device.h>
73#include <linux/interrupt.h>
7da8a6cb
MK		 74#include <media/v4l2-common.h>
75#include <linux/io.h>
76#include <media/davinci/vpfe_capture.h>
77#include "ccdc_hw_device.h"
78
79static int debug;
80static u32 numbuffers = 3;
81static u32 bufsize = (720 * 576 * 2);
82
83module_param(numbuffers, uint, S_IRUGO);
84module_param(bufsize, uint, S_IRUGO);
85module_param(debug, int, 0644);
86
87MODULE_PARM_DESC(numbuffers, "buffer count (default:3)");
88MODULE_PARM_DESC(bufsize, "buffer size in bytes (default:720 x 576 x 2)");
89MODULE_PARM_DESC(debug, "Debug level 0-1");
90
91MODULE_DESCRIPTION("VPFE Video for Linux Capture Driver");
92MODULE_LICENSE("GPL");
93MODULE_AUTHOR("Texas Instruments");
94
95/* standard information */
96struct vpfe_standard {
97 v4l2_std_id std_id;
98 unsigned int width;
99 unsigned int height;
100 struct v4l2_fract pixelaspect;
101 /* 0 - progressive, 1 - interlaced */
102 int frame_format;
103};
104
105/* ccdc configuration */
106struct ccdc_config {
107 /* This make sure vpfe is probed and ready to go */
108 int vpfe_probed;
109 /* name of ccdc device */
110 char name[32];
7da8a6cb
MK		 111};
112
113/* data structures */
114static struct vpfe_config_params config_params = {
115 .min_numbuffers = 3,
116 .numbuffers = 3,
117 .min_bufsize = 720 * 480 * 2,
118 .device_bufsize = 720 * 576 * 2,
119};
120
121/* ccdc device registered */
122static struct ccdc_hw_device *ccdc_dev;
123/* lock for accessing ccdc information */
124static DEFINE_MUTEX(ccdc_lock);
125/* ccdc configuration */
126static struct ccdc_config *ccdc_cfg;
127
128const struct vpfe_standard vpfe_standards[] = {
129 {V4L2_STD_525_60, 720, 480, {11, 10}, 1},
130 {V4L2_STD_625_50, 720, 576, {54, 59}, 1},
131};
132
133/* Used when raw Bayer image from ccdc is directly captured to SDRAM */
134static const struct vpfe_pixel_format vpfe_pix_fmts[] = {
135 {
136 .fmtdesc = {
137 .index = 0,
138 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
139 .description = "Bayer GrRBGb 8bit A-Law compr.",
140 .pixelformat = V4L2_PIX_FMT_SBGGR8,
141 },
142 .bpp = 1,
143 },
144 {
145 .fmtdesc = {
146 .index = 1,
147 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
148 .description = "Bayer GrRBGb - 16bit",
149 .pixelformat = V4L2_PIX_FMT_SBGGR16,
150 },
151 .bpp = 2,
152 },
153 {
154 .fmtdesc = {
155 .index = 2,
156 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
157 .description = "Bayer GrRBGb 8bit DPCM compr.",
158 .pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8,
159 },
160 .bpp = 1,
161 },
162 {
163 .fmtdesc = {
164 .index = 3,
165 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
166 .description = "YCbCr 4:2:2 Interleaved UYVY",
167 .pixelformat = V4L2_PIX_FMT_UYVY,
168 },
169 .bpp = 2,
170 },
171 {
172 .fmtdesc = {
173 .index = 4,
174 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
175 .description = "YCbCr 4:2:2 Interleaved YUYV",
176 .pixelformat = V4L2_PIX_FMT_YUYV,
177 },
178 .bpp = 2,
179 },
180 {
181 .fmtdesc = {
182 .index = 5,
183 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
184 .description = "Y/CbCr 4:2:0 - Semi planar",
185 .pixelformat = V4L2_PIX_FMT_NV12,
186 },
187 .bpp = 1,
188 },
189};
190
191/*
192 * vpfe_lookup_pix_format()
193 * lookup an entry in the vpfe pix format table based on pix_format
194 */
195static const struct vpfe_pixel_format *vpfe_lookup_pix_format(u32 pix_format)
196{
197 int i;
198
199 for (i = 0; i < ARRAY_SIZE(vpfe_pix_fmts); i++) {
200 if (pix_format == vpfe_pix_fmts[i].fmtdesc.pixelformat)
201 return &vpfe_pix_fmts[i];
202 }
203 return NULL;
204}
205
206/*
207 * vpfe_register_ccdc_device. CCDC module calls this to
208 * register with vpfe capture
209 */
210int vpfe_register_ccdc_device(struct ccdc_hw_device *dev)
211{
212 int ret = 0;
213 printk(KERN_NOTICE "vpfe_register_ccdc_device: %s\n", dev->name);
214
215 BUG_ON(!dev->hw_ops.open);
216 BUG_ON(!dev->hw_ops.enable);
217 BUG_ON(!dev->hw_ops.set_hw_if_params);
218 BUG_ON(!dev->hw_ops.configure);
219 BUG_ON(!dev->hw_ops.set_buftype);
220 BUG_ON(!dev->hw_ops.get_buftype);
221 BUG_ON(!dev->hw_ops.enum_pix);
222 BUG_ON(!dev->hw_ops.set_frame_format);
223 BUG_ON(!dev->hw_ops.get_frame_format);
224 BUG_ON(!dev->hw_ops.get_pixel_format);
225 BUG_ON(!dev->hw_ops.set_pixel_format);
7da8a6cb
MK		 226 BUG_ON(!dev->hw_ops.set_image_window);
227 BUG_ON(!dev->hw_ops.get_image_window);
228 BUG_ON(!dev->hw_ops.get_line_length);
7da8a6cb
MK		 229 BUG_ON(!dev->hw_ops.getfid);
230
231 mutex_lock(&ccdc_lock);
232 if (NULL == ccdc_cfg) {
233 /*
234 * TODO. Will this ever happen? if so, we need to fix it.
235 * Proabably we need to add the request to a linked list and
236 * walk through it during vpfe probe
237 */
238 printk(KERN_ERR "vpfe capture not initialized\n");
51444ea3 239 ret = -EFAULT;
7da8a6cb
MK		 240 goto unlock;
241 }
242
243 if (strcmp(dev->name, ccdc_cfg->name)) {
244 /* ignore this ccdc */
51444ea3 245 ret = -EINVAL;
7da8a6cb
MK		 246 goto unlock;
247 }
248
249 if (ccdc_dev) {
250 printk(KERN_ERR "ccdc already registered\n");
51444ea3 251 ret = -EINVAL;
7da8a6cb
MK		 252 goto unlock;
253 }
254
255 ccdc_dev = dev;
7da8a6cb
MK		 256unlock:
257 mutex_unlock(&ccdc_lock);
258 return ret;
259}
260EXPORT_SYMBOL(vpfe_register_ccdc_device);
261
262/*
263 * vpfe_unregister_ccdc_device. CCDC module calls this to
264 * unregister with vpfe capture
265 */
266void vpfe_unregister_ccdc_device(struct ccdc_hw_device *dev)
267{
268 if (NULL == dev) {
269 printk(KERN_ERR "invalid ccdc device ptr\n");
270 return;
271 }
272
273 printk(KERN_NOTICE "vpfe_unregister_ccdc_device, dev->name = %s\n",
274 dev->name);
275
276 if (strcmp(dev->name, ccdc_cfg->name)) {
277 /* ignore this ccdc */
278 return;
279 }
280
281 mutex_lock(&ccdc_lock);
282 ccdc_dev = NULL;
283 mutex_unlock(&ccdc_lock);
284 return;
285}
286EXPORT_SYMBOL(vpfe_unregister_ccdc_device);
287
288/*
289 * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings
290 */
291static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe_dev,
292 struct v4l2_format *f)
293{
294 struct v4l2_rect image_win;
295 enum ccdc_buftype buf_type;
296 enum ccdc_frmfmt frm_fmt;
297
298 memset(f, 0, sizeof(*f));
299 f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
300 ccdc_dev->hw_ops.get_image_window(&image_win);
301 f->fmt.pix.width = image_win.width;
302 f->fmt.pix.height = image_win.height;
303 f->fmt.pix.bytesperline = ccdc_dev->hw_ops.get_line_length();
304 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
305 f->fmt.pix.height;
306 buf_type = ccdc_dev->hw_ops.get_buftype();
307 f->fmt.pix.pixelformat = ccdc_dev->hw_ops.get_pixel_format();
308 frm_fmt = ccdc_dev->hw_ops.get_frame_format();
309 if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE)
310 f->fmt.pix.field = V4L2_FIELD_NONE;
311 else if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
312 if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)
313 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
314 else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED)
315 f->fmt.pix.field = V4L2_FIELD_SEQ_TB;
316 else {
317 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf_type\n");
318 return -EINVAL;
319 }
320 } else {
321 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid frm_fmt\n");
322 return -EINVAL;
323 }
324 return 0;
325}
326
327/*
328 * vpfe_config_ccdc_image_format()
329 * For a pix format, configure ccdc to setup the capture
330 */
331static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe_dev)
332{
333 enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED;
334 int ret = 0;
335
336 if (ccdc_dev->hw_ops.set_pixel_format(
337 vpfe_dev->fmt.fmt.pix.pixelformat) < 0) {
338 v4l2_err(&vpfe_dev->v4l2_dev,
339 "couldn't set pix format in ccdc\n");
340 return -EINVAL;
341 }
342 /* configure the image window */
343 ccdc_dev->hw_ops.set_image_window(&vpfe_dev->crop);
344
345 switch (vpfe_dev->fmt.fmt.pix.field) {
346 case V4L2_FIELD_INTERLACED:
347 /* do nothing, since it is default */
348 ret = ccdc_dev->hw_ops.set_buftype(
349 CCDC_BUFTYPE_FLD_INTERLEAVED);
350 break;
351 case V4L2_FIELD_NONE:
352 frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
353 /* buffer type only applicable for interlaced scan */
354 break;
355 case V4L2_FIELD_SEQ_TB:
356 ret = ccdc_dev->hw_ops.set_buftype(
357 CCDC_BUFTYPE_FLD_SEPARATED);
358 break;
359 default:
360 return -EINVAL;
361 }
362
363 /* set the frame format */
364 if (!ret)
365 ret = ccdc_dev->hw_ops.set_frame_format(frm_fmt);
366 return ret;
367}
368/*
369 * vpfe_config_image_format()
370 * For a given standard, this functions sets up the default
371 * pix format & crop values in the vpfe device and ccdc. It first
372 * starts with defaults based values from the standard table.
373 * It then checks if sub device support g_fmt and then override the
374 * values based on that.Sets crop values to match with scan resolution
375 * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the
376 * values in ccdc
377 */
378static int vpfe_config_image_format(struct vpfe_device *vpfe_dev,
379 const v4l2_std_id *std_id)
380{
381 struct vpfe_subdev_info *sdinfo = vpfe_dev->current_subdev;
382 int i, ret = 0;
383
384 for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {
385 if (vpfe_standards[i].std_id & *std_id) {
386 vpfe_dev->std_info.active_pixels =
387 vpfe_standards[i].width;
388 vpfe_dev->std_info.active_lines =
389 vpfe_standards[i].height;
390 vpfe_dev->std_info.frame_format =
391 vpfe_standards[i].frame_format;
392 vpfe_dev->std_index = i;
393 break;
394 }
395 }
396
397 if (i == ARRAY_SIZE(vpfe_standards)) {
398 v4l2_err(&vpfe_dev->v4l2_dev, "standard not supported\n");
399 return -EINVAL;
400 }
401
402 vpfe_dev->crop.top = 0;
403 vpfe_dev->crop.left = 0;
404 vpfe_dev->crop.width = vpfe_dev->std_info.active_pixels;
405 vpfe_dev->crop.height = vpfe_dev->std_info.active_lines;
406 vpfe_dev->fmt.fmt.pix.width = vpfe_dev->crop.width;
407 vpfe_dev->fmt.fmt.pix.height = vpfe_dev->crop.height;
408
409 /* first field and frame format based on standard frame format */
410 if (vpfe_dev->std_info.frame_format) {
411 vpfe_dev->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
412 /* assume V4L2_PIX_FMT_UYVY as default */
413 vpfe_dev->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
414 } else {
415 vpfe_dev->fmt.fmt.pix.field = V4L2_FIELD_NONE;
416 /* assume V4L2_PIX_FMT_SBGGR8 */
417 vpfe_dev->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
418 }
419
420 /* if sub device supports g_fmt, override the defaults */
421 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
422 sdinfo->grp_id, video, g_fmt, &vpfe_dev->fmt);
423
424 if (ret && ret != -ENOIOCTLCMD) {
425 v4l2_err(&vpfe_dev->v4l2_dev,
426 "error in getting g_fmt from sub device\n");
427 return ret;
428 }
429
430 /* Sets the values in CCDC */
431 ret = vpfe_config_ccdc_image_format(vpfe_dev);
432 if (ret)
433 return ret;
434
435 /* Update the values of sizeimage and bytesperline */
436 if (!ret) {
437 vpfe_dev->fmt.fmt.pix.bytesperline =
438 ccdc_dev->hw_ops.get_line_length();
439 vpfe_dev->fmt.fmt.pix.sizeimage =
440 vpfe_dev->fmt.fmt.pix.bytesperline *
441 vpfe_dev->fmt.fmt.pix.height;
442 }
443 return ret;
444}
445
446static int vpfe_initialize_device(struct vpfe_device *vpfe_dev)
447{
448 int ret = 0;
449
450 /* set first input of current subdevice as the current input */
451 vpfe_dev->current_input = 0;
452
453 /* set default standard */
454 vpfe_dev->std_index = 0;
455
456 /* Configure the default format information */
457 ret = vpfe_config_image_format(vpfe_dev,
458 &vpfe_standards[vpfe_dev->std_index].std_id);
459 if (ret)
460 return ret;
461
462 /* now open the ccdc device to initialize it */
463 mutex_lock(&ccdc_lock);
464 if (NULL == ccdc_dev) {
465 v4l2_err(&vpfe_dev->v4l2_dev, "ccdc device not registered\n");
466 ret = -ENODEV;
467 goto unlock;
468 }
469
470 if (!try_module_get(ccdc_dev->owner)) {
471 v4l2_err(&vpfe_dev->v4l2_dev, "Couldn't lock ccdc module\n");
472 ret = -ENODEV;
473 goto unlock;
474 }
475 ret = ccdc_dev->hw_ops.open(vpfe_dev->pdev);
476 if (!ret)
477 vpfe_dev->initialized = 1;
085b54a2
VH		 478
479 /* Clear all VPFE/CCDC interrupts */
480 if (vpfe_dev->cfg->clr_intr)
481 vpfe_dev->cfg->clr_intr(-1);
482
7da8a6cb
MK		 483unlock:
484 mutex_unlock(&ccdc_lock);
485 return ret;
486}
487
488/*
489 * vpfe_open : It creates object of file handle structure and
490 * stores it in private_data member of filepointer
491 */
492static int vpfe_open(struct file *file)
493{
494 struct vpfe_device *vpfe_dev = video_drvdata(file);
495 struct vpfe_fh *fh;
496
497 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_open\n");
498
499 if (!vpfe_dev->cfg->num_subdevs) {
500 v4l2_err(&vpfe_dev->v4l2_dev, "No decoder registered\n");
501 return -ENODEV;
502 }
503
504 /* Allocate memory for the file handle object */
505 fh = kmalloc(sizeof(struct vpfe_fh), GFP_KERNEL);
506 if (NULL == fh) {
507 v4l2_err(&vpfe_dev->v4l2_dev,
508 "unable to allocate memory for file handle object\n");
509 return -ENOMEM;
510 }
511 /* store pointer to fh in private_data member of file */
512 file->private_data = fh;
513 fh->vpfe_dev = vpfe_dev;
514 mutex_lock(&vpfe_dev->lock);
515 /* If decoder is not initialized. initialize it */
516 if (!vpfe_dev->initialized) {
517 if (vpfe_initialize_device(vpfe_dev)) {
518 mutex_unlock(&vpfe_dev->lock);
519 return -ENODEV;
520 }
521 }
522 /* Increment device usrs counter */
523 vpfe_dev->usrs++;
524 /* Set io_allowed member to false */
525 fh->io_allowed = 0;
526 /* Initialize priority of this instance to default priority */
527 fh->prio = V4L2_PRIORITY_UNSET;
528 v4l2_prio_open(&vpfe_dev->prio, &fh->prio);
529 mutex_unlock(&vpfe_dev->lock);
530 return 0;
531}
532
533static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe_dev)
534{
535 unsigned long addr;
536
537 vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
538 struct videobuf_buffer, queue);
539 list_del(&vpfe_dev->next_frm->queue);
540 vpfe_dev->next_frm->state = VIDEOBUF_ACTIVE;
541 addr = videobuf_to_dma_contig(vpfe_dev->next_frm);
844cc0dc
VH		 542
543 ccdc_dev->hw_ops.setfbaddr(addr);
544}
545
546static void vpfe_schedule_bottom_field(struct vpfe_device *vpfe_dev)
547{
548 unsigned long addr;
549
550 addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
551 addr += vpfe_dev->field_off;
7da8a6cb
MK		 552 ccdc_dev->hw_ops.setfbaddr(addr);
553}
554
555static void vpfe_process_buffer_complete(struct vpfe_device *vpfe_dev)
556{
557 struct timeval timevalue;
558
559 do_gettimeofday(&timevalue);
560 vpfe_dev->cur_frm->ts = timevalue;
561 vpfe_dev->cur_frm->state = VIDEOBUF_DONE;
562 vpfe_dev->cur_frm->size = vpfe_dev->fmt.fmt.pix.sizeimage;
563 wake_up_interruptible(&vpfe_dev->cur_frm->done);
564 vpfe_dev->cur_frm = vpfe_dev->next_frm;
565}
566
567/* ISR for VINT0*/
568static irqreturn_t vpfe_isr(int irq, void *dev_id)
569{
570 struct vpfe_device *vpfe_dev = dev_id;
571 enum v4l2_field field;
7da8a6cb
MK		 572 int fid;
573
574 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nStarting vpfe_isr...\n");
575 field = vpfe_dev->fmt.fmt.pix.field;
576
577 /* if streaming not started, don't do anything */
578 if (!vpfe_dev->started)
085b54a2 579 goto clear_intr;
7da8a6cb
MK		 580
581 /* only for 6446 this will be applicable */
582 if (NULL != ccdc_dev->hw_ops.reset)
583 ccdc_dev->hw_ops.reset();
584
585 if (field == V4L2_FIELD_NONE) {
586 /* handle progressive frame capture */
587 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
588 "frame format is progressive...\n");
589 if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
590 vpfe_process_buffer_complete(vpfe_dev);
085b54a2 591 goto clear_intr;
7da8a6cb
MK		 592 }
593
594 /* interlaced or TB capture check which field we are in hardware */
595 fid = ccdc_dev->hw_ops.getfid();
596
597 /* switch the software maintained field id */
598 vpfe_dev->field_id ^= 1;
599 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "field id = %x:%x.\n",
600 fid, vpfe_dev->field_id);
601 if (fid == vpfe_dev->field_id) {
602 /* we are in-sync here,continue */
603 if (fid == 0) {
604 /*
605 * One frame is just being captured. If the next frame
606 * is available, release the current frame and move on
607 */
608 if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
609 vpfe_process_buffer_complete(vpfe_dev);
610 /*
611 * based on whether the two fields are stored
612 * interleavely or separately in memory, reconfigure
613 * the CCDC memory address
614 */
615 if (field == V4L2_FIELD_SEQ_TB) {
844cc0dc 616 vpfe_schedule_bottom_field(vpfe_dev);
7da8a6cb 617 }
085b54a2 618 goto clear_intr;
7da8a6cb
MK		 619 }
620 /*
621 * if one field is just being captured configure
622 * the next frame get the next frame from the empty
623 * queue if no frame is available hold on to the
624 * current buffer
625 */
626 spin_lock(&vpfe_dev->dma_queue_lock);
627 if (!list_empty(&vpfe_dev->dma_queue) &&
628 vpfe_dev->cur_frm == vpfe_dev->next_frm)
629 vpfe_schedule_next_buffer(vpfe_dev);
630 spin_unlock(&vpfe_dev->dma_queue_lock);
631 } else if (fid == 0) {
632 /*
633 * out of sync. Recover from any hardware out-of-sync.
634 * May loose one frame
635 */
636 vpfe_dev->field_id = fid;
637 }
085b54a2
VH		 638clear_intr:
639 if (vpfe_dev->cfg->clr_intr)
640 vpfe_dev->cfg->clr_intr(irq);
641
7da8a6cb
MK		 642 return IRQ_HANDLED;
643}
644
645/* vdint1_isr - isr handler for VINT1 interrupt */
646static irqreturn_t vdint1_isr(int irq, void *dev_id)
647{
648 struct vpfe_device *vpfe_dev = dev_id;
649
650 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nInside vdint1_isr...\n");
651
652 /* if streaming not started, don't do anything */
085b54a2
VH		 653 if (!vpfe_dev->started) {
654 if (vpfe_dev->cfg->clr_intr)
655 vpfe_dev->cfg->clr_intr(irq);
7da8a6cb 656 return IRQ_HANDLED;
085b54a2 657 }
7da8a6cb
MK		 658
659 spin_lock(&vpfe_dev->dma_queue_lock);
660 if ((vpfe_dev->fmt.fmt.pix.field == V4L2_FIELD_NONE) &&
661 !list_empty(&vpfe_dev->dma_queue) &&
662 vpfe_dev->cur_frm == vpfe_dev->next_frm)
663 vpfe_schedule_next_buffer(vpfe_dev);
664 spin_unlock(&vpfe_dev->dma_queue_lock);
085b54a2
VH		 665
666 if (vpfe_dev->cfg->clr_intr)
667 vpfe_dev->cfg->clr_intr(irq);
668
7da8a6cb
MK		 669 return IRQ_HANDLED;
670}
671
672static void vpfe_detach_irq(struct vpfe_device *vpfe_dev)
673{
674 enum ccdc_frmfmt frame_format;
675
676 frame_format = ccdc_dev->hw_ops.get_frame_format();
677 if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
1ead696b 678 free_irq(vpfe_dev->ccdc_irq1, vpfe_dev);
7da8a6cb
MK		 679}
680
681static int vpfe_attach_irq(struct vpfe_device *vpfe_dev)
682{
683 enum ccdc_frmfmt frame_format;
684
685 frame_format = ccdc_dev->hw_ops.get_frame_format();
686 if (frame_format == CCDC_FRMFMT_PROGRESSIVE) {
687 return request_irq(vpfe_dev->ccdc_irq1, vdint1_isr,
688 IRQF_DISABLED, "vpfe_capture1",
689 vpfe_dev);
690 }
691 return 0;
692}
693
694/* vpfe_stop_ccdc_capture: stop streaming in ccdc/isif */
695static void vpfe_stop_ccdc_capture(struct vpfe_device *vpfe_dev)
696{
697 vpfe_dev->started = 0;
698 ccdc_dev->hw_ops.enable(0);
699 if (ccdc_dev->hw_ops.enable_out_to_sdram)
700 ccdc_dev->hw_ops.enable_out_to_sdram(0);
701}
702
703/*
704 * vpfe_release : This function deletes buffer queue, frees the
705 * buffers and the vpfe file handle
706 */
707static int vpfe_release(struct file *file)
708{
709 struct vpfe_device *vpfe_dev = video_drvdata(file);
710 struct vpfe_fh *fh = file->private_data;
711 struct vpfe_subdev_info *sdinfo;
712 int ret;
713
714 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_release\n");
715
716 /* Get the device lock */
717 mutex_lock(&vpfe_dev->lock);
718 /* if this instance is doing IO */
719 if (fh->io_allowed) {
720 if (vpfe_dev->started) {
721 sdinfo = vpfe_dev->current_subdev;
722 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
723 sdinfo->grp_id,
724 video, s_stream, 0);
725 if (ret && (ret != -ENOIOCTLCMD))
726 v4l2_err(&vpfe_dev->v4l2_dev,
727 "stream off failed in subdev\n");
728 vpfe_stop_ccdc_capture(vpfe_dev);
729 vpfe_detach_irq(vpfe_dev);
730 videobuf_streamoff(&vpfe_dev->buffer_queue);
731 }
732 vpfe_dev->io_usrs = 0;
733 vpfe_dev->numbuffers = config_params.numbuffers;
734 }
735
736 /* Decrement device usrs counter */
737 vpfe_dev->usrs--;
738 /* Close the priority */
739 v4l2_prio_close(&vpfe_dev->prio, &fh->prio);
740 /* If this is the last file handle */
741 if (!vpfe_dev->usrs) {
742 vpfe_dev->initialized = 0;
743 if (ccdc_dev->hw_ops.close)
744 ccdc_dev->hw_ops.close(vpfe_dev->pdev);
745 module_put(ccdc_dev->owner);
746 }
747 mutex_unlock(&vpfe_dev->lock);
748 file->private_data = NULL;
749 /* Free memory allocated to file handle object */
750 kfree(fh);
751 return 0;
752}
753
754/*
755 * vpfe_mmap : It is used to map kernel space buffers
756 * into user spaces
757 */
758static int vpfe_mmap(struct file *file, struct vm_area_struct *vma)
759{
760 /* Get the device object and file handle object */
761 struct vpfe_device *vpfe_dev = video_drvdata(file);
762
763 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_mmap\n");
764
765 return videobuf_mmap_mapper(&vpfe_dev->buffer_queue, vma);
766}
767
768/*
769 * vpfe_poll: It is used for select/poll system call
770 */
771static unsigned int vpfe_poll(struct file *file, poll_table *wait)
772{
773 struct vpfe_device *vpfe_dev = video_drvdata(file);
774
775 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_poll\n");
776
777 if (vpfe_dev->started)
778 return videobuf_poll_stream(file,
779 &vpfe_dev->buffer_queue, wait);
780 return 0;
781}
782
783/* vpfe capture driver file operations */
784static const struct v4l2_file_operations vpfe_fops = {
785 .owner = THIS_MODULE,
786 .open = vpfe_open,
787 .release = vpfe_release,
788 .unlocked_ioctl = video_ioctl2,
789 .mmap = vpfe_mmap,
790 .poll = vpfe_poll
791};
792
793/*
794 * vpfe_check_format()
795 * This function adjust the input pixel format as per hardware
796 * capabilities and update the same in pixfmt.
797 * Following algorithm used :-
798 *
799 * If given pixformat is not in the vpfe list of pix formats or not
800 * supported by the hardware, current value of pixformat in the device
801 * is used
802 * If given field is not supported, then current field is used. If field
803 * is different from current, then it is matched with that from sub device.
804 * Minimum height is 2 lines for interlaced or tb field and 1 line for
805 * progressive. Maximum height is clamped to active active lines of scan
806 * Minimum width is 32 bytes in memory and width is clamped to active
807 * pixels of scan.
808 * bytesperline is a multiple of 32.
809 */
810static const struct vpfe_pixel_format *
811 vpfe_check_format(struct vpfe_device *vpfe_dev,
812 struct v4l2_pix_format *pixfmt)
813{
814 u32 min_height = 1, min_width = 32, max_width, max_height;
815 const struct vpfe_pixel_format *vpfe_pix_fmt;
816 u32 pix;
817 int temp, found;
818
819 vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
820 if (NULL == vpfe_pix_fmt) {
821 /*
822 * use current pixel format in the vpfe device. We
823 * will find this pix format in the table
824 */
825 pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
826 vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
827 }
828
829 /* check if hw supports it */
830 temp = 0;
831 found = 0;
832 while (ccdc_dev->hw_ops.enum_pix(&pix, temp) >= 0) {
833 if (vpfe_pix_fmt->fmtdesc.pixelformat == pix) {
834 found = 1;
835 break;
836 }
837 temp++;
838 }
839
840 if (!found) {
841 /* use current pixel format */
842 pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
843 /*
844 * Since this is currently used in the vpfe device, we
845 * will find this pix format in the table
846 */
847 vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
848 }
849
850 /* check what field format is supported */
851 if (pixfmt->field == V4L2_FIELD_ANY) {
852 /* if field is any, use current value as default */
853 pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
854 }
855
856 /*
857 * if field is not same as current field in the vpfe device
858 * try matching the field with the sub device field
859 */
860 if (vpfe_dev->fmt.fmt.pix.field != pixfmt->field) {
861 /*
862 * If field value is not in the supported fields, use current
863 * field used in the device as default
864 */
865 switch (pixfmt->field) {
866 case V4L2_FIELD_INTERLACED:
867 case V4L2_FIELD_SEQ_TB:
868 /* if sub device is supporting progressive, use that */
869 if (!vpfe_dev->std_info.frame_format)
870 pixfmt->field = V4L2_FIELD_NONE;
871 break;
872 case V4L2_FIELD_NONE:
873 if (vpfe_dev->std_info.frame_format)
874 pixfmt->field = V4L2_FIELD_INTERLACED;
875 break;
876
877 default:
878 /* use current field as default */
879 pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
880 break;
881 }
882 }
883
884 /* Now adjust image resolutions supported */
885 if (pixfmt->field == V4L2_FIELD_INTERLACED ||
886 pixfmt->field == V4L2_FIELD_SEQ_TB)
887 min_height = 2;
888
889 max_width = vpfe_dev->std_info.active_pixels;
890 max_height = vpfe_dev->std_info.active_lines;
891 min_width /= vpfe_pix_fmt->bpp;
892
893 v4l2_info(&vpfe_dev->v4l2_dev, "width = %d, height = %d, bpp = %d\n",
894 pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp);
895
896 pixfmt->width = clamp((pixfmt->width), min_width, max_width);
897 pixfmt->height = clamp((pixfmt->height), min_height, max_height);
898
899 /* If interlaced, adjust height to be a multiple of 2 */
900 if (pixfmt->field == V4L2_FIELD_INTERLACED)
901 pixfmt->height &= (~1);
902 /*
903 * recalculate bytesperline and sizeimage since width
904 * and height might have changed
905 */
906 pixfmt->bytesperline = (((pixfmt->width * vpfe_pix_fmt->bpp) + 31)
907 & ~31);
908 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
909 pixfmt->sizeimage =
910 pixfmt->bytesperline * pixfmt->height +
911 ((pixfmt->bytesperline * pixfmt->height) >> 1);
912 else
913 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
914
915 v4l2_info(&vpfe_dev->v4l2_dev, "adjusted width = %d, height ="
916 " %d, bpp = %d, bytesperline = %d, sizeimage = %d\n",
917 pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp,
918 pixfmt->bytesperline, pixfmt->sizeimage);
919 return vpfe_pix_fmt;
920}
921
922static int vpfe_querycap(struct file *file, void *priv,
923 struct v4l2_capability *cap)
924{
925 struct vpfe_device *vpfe_dev = video_drvdata(file);
926
927 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querycap\n");
928
929 cap->version = VPFE_CAPTURE_VERSION_CODE;
930 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
931 strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver));
932 strlcpy(cap->bus_info, "VPFE", sizeof(cap->bus_info));
933 strlcpy(cap->card, vpfe_dev->cfg->card_name, sizeof(cap->card));
934 return 0;
935}
936
937static int vpfe_g_fmt_vid_cap(struct file *file, void *priv,
938 struct v4l2_format *fmt)
939{
940 struct vpfe_device *vpfe_dev = video_drvdata(file);
941 int ret = 0;
942
943 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_fmt_vid_cap\n");
944 /* Fill in the information about format */
945 *fmt = vpfe_dev->fmt;
946 return ret;
947}
948
949static int vpfe_enum_fmt_vid_cap(struct file *file, void *priv,
950 struct v4l2_fmtdesc *fmt)
951{
952 struct vpfe_device *vpfe_dev = video_drvdata(file);
953 const struct vpfe_pixel_format *pix_fmt;
954 int temp_index;
955 u32 pix;
956
957 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_fmt_vid_cap\n");
958
959 if (ccdc_dev->hw_ops.enum_pix(&pix, fmt->index) < 0)
960 return -EINVAL;
961
962 /* Fill in the information about format */
963 pix_fmt = vpfe_lookup_pix_format(pix);
964 if (NULL != pix_fmt) {
965 temp_index = fmt->index;
966 *fmt = pix_fmt->fmtdesc;
967 fmt->index = temp_index;
968 return 0;
969 }
970 return -EINVAL;
971}
972
973static int vpfe_s_fmt_vid_cap(struct file *file, void *priv,
974 struct v4l2_format *fmt)
975{
976 struct vpfe_device *vpfe_dev = video_drvdata(file);
977 const struct vpfe_pixel_format *pix_fmts;
978 int ret = 0;
979
980 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_fmt_vid_cap\n");
981
982 /* If streaming is started, return error */
983 if (vpfe_dev->started) {
984 v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is started\n");
985 return -EBUSY;
986 }
987
988 /* Check for valid frame format */
989 pix_fmts = vpfe_check_format(vpfe_dev, &fmt->fmt.pix);
990
991 if (NULL == pix_fmts)
992 return -EINVAL;
993
994 /* store the pixel format in the device object */
995 ret = mutex_lock_interruptible(&vpfe_dev->lock);
996 if (ret)
997 return ret;
998
999 /* First detach any IRQ if currently attached */
1000 vpfe_detach_irq(vpfe_dev);
1001 vpfe_dev->fmt = *fmt;
1002 /* set image capture parameters in the ccdc */
1003 ret = vpfe_config_ccdc_image_format(vpfe_dev);
1004 mutex_unlock(&vpfe_dev->lock);
1005 return ret;
1006}
1007
1008static int vpfe_try_fmt_vid_cap(struct file *file, void *priv,
1009 struct v4l2_format *f)
1010{
1011 struct vpfe_device *vpfe_dev = video_drvdata(file);
1012 const struct vpfe_pixel_format *pix_fmts;
1013
1014 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_try_fmt_vid_cap\n");
1015
1016 pix_fmts = vpfe_check_format(vpfe_dev, &f->fmt.pix);
1017 if (NULL == pix_fmts)
1018 return -EINVAL;
1019 return 0;
1020}
1021
1022/*
1023 * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
1024 * given app input index
1025 */
1026static int vpfe_get_subdev_input_index(struct vpfe_device *vpfe_dev,
1027 int *subdev_index,
1028 int *subdev_input_index,
1029 int app_input_index)
1030{
1031 struct vpfe_config *cfg = vpfe_dev->cfg;
1032 struct vpfe_subdev_info *sdinfo;
1033 int i, j = 0;
1034
1035 for (i = 0; i < cfg->num_subdevs; i++) {
1036 sdinfo = &cfg->sub_devs[i];
1037 if (app_input_index < (j + sdinfo->num_inputs)) {
1038 *subdev_index = i;
1039 *subdev_input_index = app_input_index - j;
1040 return 0;
1041 }
1042 j += sdinfo->num_inputs;
1043 }
1044 return -EINVAL;
1045}
1046
1047/*
1048 * vpfe_get_app_input - Get app input index for a given subdev input index
1049 * driver stores the input index of the current sub device and translate it
1050 * when application request the current input
1051 */
1052static int vpfe_get_app_input_index(struct vpfe_device *vpfe_dev,
1053 int *app_input_index)
1054{
1055 struct vpfe_config *cfg = vpfe_dev->cfg;
1056 struct vpfe_subdev_info *sdinfo;
1057 int i, j = 0;
1058
1059 for (i = 0; i < cfg->num_subdevs; i++) {
1060 sdinfo = &cfg->sub_devs[i];
1061 if (!strcmp(sdinfo->name, vpfe_dev->current_subdev->name)) {
1062 if (vpfe_dev->current_input >= sdinfo->num_inputs)
1063 return -1;
1064 *app_input_index = j + vpfe_dev->current_input;
1065 return 0;
1066 }
1067 j += sdinfo->num_inputs;
1068 }
1069 return -EINVAL;
1070}
1071
1072static int vpfe_enum_input(struct file *file, void *priv,
1073 struct v4l2_input *inp)
1074{
1075 struct vpfe_device *vpfe_dev = video_drvdata(file);
1076 struct vpfe_subdev_info *sdinfo;
1077 int subdev, index ;
1078
1079 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_input\n");
1080
1081 if (vpfe_get_subdev_input_index(vpfe_dev,
1082 &subdev,
1083 &index,
1084 inp->index) < 0) {
1085 v4l2_err(&vpfe_dev->v4l2_dev, "input information not found"
1086 " for the subdev\n");
1087 return -EINVAL;
1088 }
1089 sdinfo = &vpfe_dev->cfg->sub_devs[subdev];
1090 memcpy(inp, &sdinfo->inputs[index], sizeof(struct v4l2_input));
1091 return 0;
1092}
1093
1094static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
1095{
1096 struct vpfe_device *vpfe_dev = video_drvdata(file);
1097
1098 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_input\n");
1099
1100 return vpfe_get_app_input_index(vpfe_dev, index);
1101}
1102
1103
1104static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
1105{
1106 struct vpfe_device *vpfe_dev = video_drvdata(file);
1107 struct vpfe_subdev_info *sdinfo;
1108 int subdev_index, inp_index;
1109 struct vpfe_route *route;
1110 u32 input = 0, output = 0;
1111 int ret = -EINVAL;
1112
1113 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_input\n");
1114
1115 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1116 if (ret)
1117 return ret;
1118
1119 /*
1120 * If streaming is started return device busy
1121 * error
1122 */
1123 if (vpfe_dev->started) {
1124 v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is on\n");
1125 ret = -EBUSY;
1126 goto unlock_out;
1127 }
1128
1129 if (vpfe_get_subdev_input_index(vpfe_dev,
1130 &subdev_index,
1131 &inp_index,
1132 index) < 0) {
1133 v4l2_err(&vpfe_dev->v4l2_dev, "invalid input index\n");
1134 goto unlock_out;
1135 }
1136
1137 sdinfo = &vpfe_dev->cfg->sub_devs[subdev_index];
1138 route = &sdinfo->routes[inp_index];
1139 if (route && sdinfo->can_route) {
1140 input = route->input;
1141 output = route->output;
1142 }
1143
1144 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1145 video, s_routing, input, output, 0);
1146
1147 if (ret) {
1148 v4l2_err(&vpfe_dev->v4l2_dev,
1149 "vpfe_doioctl:error in setting input in decoder\n");
1150 ret = -EINVAL;
1151 goto unlock_out;
1152 }
1153 vpfe_dev->current_subdev = sdinfo;
1154 vpfe_dev->current_input = index;
1155 vpfe_dev->std_index = 0;
1156
1157 /* set the bus/interface parameter for the sub device in ccdc */
1158 ret = ccdc_dev->hw_ops.set_hw_if_params(&sdinfo->ccdc_if_params);
1159 if (ret)
1160 goto unlock_out;
1161
1162 /* set the default image parameters in the device */
1163 ret = vpfe_config_image_format(vpfe_dev,
1164 &vpfe_standards[vpfe_dev->std_index].std_id);
1165unlock_out:
1166 mutex_unlock(&vpfe_dev->lock);
1167 return ret;
1168}
1169
1170static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
1171{
1172 struct vpfe_device *vpfe_dev = video_drvdata(file);
1173 struct vpfe_subdev_info *sdinfo;
1174 int ret = 0;
1175
1176 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querystd\n");
1177
1178 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1179 sdinfo = vpfe_dev->current_subdev;
1180 if (ret)
1181 return ret;
1182 /* Call querystd function of decoder device */
1183 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1184 video, querystd, std_id);
1185 mutex_unlock(&vpfe_dev->lock);
1186 return ret;
1187}
1188
1189static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
1190{
1191 struct vpfe_device *vpfe_dev = video_drvdata(file);
1192 struct vpfe_subdev_info *sdinfo;
1193 int ret = 0;
1194
1195 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_std\n");
1196
1197 /* Call decoder driver function to set the standard */
1198 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1199 if (ret)
1200 return ret;
1201
1202 sdinfo = vpfe_dev->current_subdev;
1203 /* If streaming is started, return device busy error */
1204 if (vpfe_dev->started) {
1205 v4l2_err(&vpfe_dev->v4l2_dev, "streaming is started\n");
1206 ret = -EBUSY;
1207 goto unlock_out;
1208 }
1209
1210 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1211 core, s_std, *std_id);
1212 if (ret < 0) {
1213 v4l2_err(&vpfe_dev->v4l2_dev, "Failed to set standard\n");
1214 goto unlock_out;
1215 }
1216 ret = vpfe_config_image_format(vpfe_dev, std_id);
1217
1218unlock_out:
1219 mutex_unlock(&vpfe_dev->lock);
1220 return ret;
1221}
1222
1223static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
1224{
1225 struct vpfe_device *vpfe_dev = video_drvdata(file);
1226
1227 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_std\n");
1228
1229 *std_id = vpfe_standards[vpfe_dev->std_index].std_id;
1230 return 0;
1231}
1232/*
1233 * Videobuf operations
1234 */
1235static int vpfe_videobuf_setup(struct videobuf_queue *vq,
1236 unsigned int *count,
1237 unsigned int *size)
1238{
1239 struct vpfe_fh *fh = vq->priv_data;
1240 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1241
1242 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_setup\n");
844cc0dc
VH		 1243 *size = vpfe_dev->fmt.fmt.pix.sizeimage;
1244 if (vpfe_dev->memory == V4L2_MEMORY_MMAP &&
1245 vpfe_dev->fmt.fmt.pix.sizeimage > config_params.device_bufsize)
1246 *size = config_params.device_bufsize;
7da8a6cb
MK		 1247
1248 if (*count < config_params.min_numbuffers)
1249 *count = config_params.min_numbuffers;
1250 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1251 "count=%d, size=%d\n", *count, *size);
1252 return 0;
1253}
1254
1255static int vpfe_videobuf_prepare(struct videobuf_queue *vq,
1256 struct videobuf_buffer *vb,
1257 enum v4l2_field field)
1258{
1259 struct vpfe_fh *fh = vq->priv_data;
1260 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
844cc0dc
VH		 1261 unsigned long addr;
1262 int ret;
7da8a6cb
MK		 1263
1264 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n");
1265
1266 /* If buffer is not initialized, initialize it */
1267 if (VIDEOBUF_NEEDS_INIT == vb->state) {
1268 vb->width = vpfe_dev->fmt.fmt.pix.width;
1269 vb->height = vpfe_dev->fmt.fmt.pix.height;
1270 vb->size = vpfe_dev->fmt.fmt.pix.sizeimage;
1271 vb->field = field;
844cc0dc
VH		 1272
1273 ret = videobuf_iolock(vq, vb, NULL);;
1274 if (ret < 0)
1275 return ret;
1276
1277 addr = videobuf_to_dma_contig(vb);
1278 /* Make sure user addresses are aligned to 32 bytes */
1279 if (!ALIGN(addr, 32))
1280 return -EINVAL;
1281
1282 vb->state = VIDEOBUF_PREPARED;
7da8a6cb 1283 }
7da8a6cb
MK		 1284 return 0;
1285}
1286
1287static void vpfe_videobuf_queue(struct videobuf_queue *vq,
1288 struct videobuf_buffer *vb)
1289{
1290 /* Get the file handle object and device object */
1291 struct vpfe_fh *fh = vq->priv_data;
1292 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1293 unsigned long flags;
1294
1295 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_queue\n");
1296
1297 /* add the buffer to the DMA queue */
1298 spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
1299 list_add_tail(&vb->queue, &vpfe_dev->dma_queue);
1300 spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
1301
1302 /* Change state of the buffer */
1303 vb->state = VIDEOBUF_QUEUED;
1304}
1305
1306static void vpfe_videobuf_release(struct videobuf_queue *vq,
1307 struct videobuf_buffer *vb)
1308{
1309 struct vpfe_fh *fh = vq->priv_data;
1310 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1311 unsigned long flags;
1312
1313 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_videobuf_release\n");
1314
1315 /*
1316 * We need to flush the buffer from the dma queue since
1317 * they are de-allocated
1318 */
1319 spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
1320 INIT_LIST_HEAD(&vpfe_dev->dma_queue);
1321 spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
1322 videobuf_dma_contig_free(vq, vb);
1323 vb->state = VIDEOBUF_NEEDS_INIT;
1324}
1325
1326static struct videobuf_queue_ops vpfe_videobuf_qops = {
1327 .buf_setup = vpfe_videobuf_setup,
1328 .buf_prepare = vpfe_videobuf_prepare,
1329 .buf_queue = vpfe_videobuf_queue,
1330 .buf_release = vpfe_videobuf_release,
1331};
1332
1333/*
1334 * vpfe_reqbufs. currently support REQBUF only once opening
1335 * the device.
1336 */
1337static int vpfe_reqbufs(struct file *file, void *priv,
1338 struct v4l2_requestbuffers *req_buf)
1339{
1340 struct vpfe_device *vpfe_dev = video_drvdata(file);
1341 struct vpfe_fh *fh = file->private_data;
1342 int ret = 0;
1343
1344 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs\n");
1345
1346 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != req_buf->type) {
1347 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buffer type\n");
1348 return -EINVAL;
1349 }
1350
7da8a6cb
MK		 1351 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1352 if (ret)
1353 return ret;
1354
1355 if (vpfe_dev->io_usrs != 0) {
1356 v4l2_err(&vpfe_dev->v4l2_dev, "Only one IO user allowed\n");
1357 ret = -EBUSY;
1358 goto unlock_out;
1359 }
1360
1361 vpfe_dev->memory = req_buf->memory;
1362 videobuf_queue_dma_contig_init(&vpfe_dev->buffer_queue,
1363 &vpfe_videobuf_qops,
204e6ea9 1364 vpfe_dev->pdev,
7da8a6cb
MK		 1365 &vpfe_dev->irqlock,
1366 req_buf->type,
1367 vpfe_dev->fmt.fmt.pix.field,
1368 sizeof(struct videobuf_buffer),
1369 fh);
1370
1371 fh->io_allowed = 1;
1372 vpfe_dev->io_usrs = 1;
1373 INIT_LIST_HEAD(&vpfe_dev->dma_queue);
1374 ret = videobuf_reqbufs(&vpfe_dev->buffer_queue, req_buf);
1375unlock_out:
1376 mutex_unlock(&vpfe_dev->lock);
1377 return ret;
1378}
1379
1380static int vpfe_querybuf(struct file *file, void *priv,
1381 struct v4l2_buffer *buf)
1382{
1383 struct vpfe_device *vpfe_dev = video_drvdata(file);
1384
1385 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querybuf\n");
1386
1387 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
1388 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1389 return -EINVAL;
1390 }
1391
1392 if (vpfe_dev->memory != V4L2_MEMORY_MMAP) {
1393 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid memory\n");
1394 return -EINVAL;
1395 }
1396 /* Call videobuf_querybuf to get information */
1397 return videobuf_querybuf(&vpfe_dev->buffer_queue, buf);
1398}
1399
1400static int vpfe_qbuf(struct file *file, void *priv,
1401 struct v4l2_buffer *p)
1402{
1403 struct vpfe_device *vpfe_dev = video_drvdata(file);
1404 struct vpfe_fh *fh = file->private_data;
1405
1406 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_qbuf\n");
1407
1408 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != p->type) {
1409 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1410 return -EINVAL;
1411 }
1412
1413 /*
1414 * If this file handle is not allowed to do IO,
1415 * return error
1416 */
1417 if (!fh->io_allowed) {
1418 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1419 return -EACCES;
1420 }
1421 return videobuf_qbuf(&vpfe_dev->buffer_queue, p);
1422}
1423
1424static int vpfe_dqbuf(struct file *file, void *priv,
1425 struct v4l2_buffer *buf)
1426{
1427 struct vpfe_device *vpfe_dev = video_drvdata(file);
1428
1429 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_dqbuf\n");
1430
1431 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
1432 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1433 return -EINVAL;
1434 }
1435 return videobuf_dqbuf(&vpfe_dev->buffer_queue,
1436 buf, file->f_flags & O_NONBLOCK);
1437}
1438
d73bfc5f
VH		 1439static int vpfe_queryctrl(struct file *file, void *priv,
1440 struct v4l2_queryctrl *qctrl)
1441{
1442 struct vpfe_device *vpfe_dev = video_drvdata(file);
1443 struct vpfe_subdev_info *sdinfo;
1444
1445 sdinfo = vpfe_dev->current_subdev;
1446
1447 return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1448 core, queryctrl, qctrl);
1449
1450}
1451
1452static int vpfe_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl)
1453{
1454 struct vpfe_device *vpfe_dev = video_drvdata(file);
1455 struct vpfe_subdev_info *sdinfo;
1456
1457 sdinfo = vpfe_dev->current_subdev;
1458
1459 return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1460 core, g_ctrl, ctrl);
1461}
1462
1463static int vpfe_s_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl)
1464{
1465 struct vpfe_device *vpfe_dev = video_drvdata(file);
1466 struct vpfe_subdev_info *sdinfo;
1467
1468 sdinfo = vpfe_dev->current_subdev;
1469
1470 return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1471 core, s_ctrl, ctrl);
1472}
1473
7da8a6cb
MK		 1474/*
1475 * vpfe_calculate_offsets : This function calculates buffers offset
1476 * for top and bottom field
1477 */
1478static void vpfe_calculate_offsets(struct vpfe_device *vpfe_dev)
1479{
1480 struct v4l2_rect image_win;
1481
1482 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_calculate_offsets\n");
1483
1484 ccdc_dev->hw_ops.get_image_window(&image_win);
1485 vpfe_dev->field_off = image_win.height * image_win.width;
1486}
1487
1488/* vpfe_start_ccdc_capture: start streaming in ccdc/isif */
1489static void vpfe_start_ccdc_capture(struct vpfe_device *vpfe_dev)
1490{
1491 ccdc_dev->hw_ops.enable(1);
1492 if (ccdc_dev->hw_ops.enable_out_to_sdram)
1493 ccdc_dev->hw_ops.enable_out_to_sdram(1);
1494 vpfe_dev->started = 1;
1495}
1496
1497/*
1498 * vpfe_streamon. Assume the DMA queue is not empty.
1499 * application is expected to call QBUF before calling
1500 * this ioctl. If not, driver returns error
1501 */
1502static int vpfe_streamon(struct file *file, void *priv,
1503 enum v4l2_buf_type buf_type)
1504{
1505 struct vpfe_device *vpfe_dev = video_drvdata(file);
1506 struct vpfe_fh *fh = file->private_data;
1507 struct vpfe_subdev_info *sdinfo;
1508 unsigned long addr;
1509 int ret = 0;
1510
1511 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamon\n");
1512
1513 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
1514 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1515 return -EINVAL;
1516 }
1517
1518 /* If file handle is not allowed IO, return error */
1519 if (!fh->io_allowed) {
1520 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1521 return -EACCES;
1522 }
1523
1524 sdinfo = vpfe_dev->current_subdev;
1525 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1526 video, s_stream, 1);
1527
1528 if (ret && (ret != -ENOIOCTLCMD)) {
1529 v4l2_err(&vpfe_dev->v4l2_dev, "stream on failed in subdev\n");
1530 return -EINVAL;
1531 }
1532
1533 /* If buffer queue is empty, return error */
1534 if (list_empty(&vpfe_dev->buffer_queue.stream)) {
1535 v4l2_err(&vpfe_dev->v4l2_dev, "buffer queue is empty\n");
1536 return -EIO;
1537 }
1538
1539 /* Call videobuf_streamon to start streaming * in videobuf */
1540 ret = videobuf_streamon(&vpfe_dev->buffer_queue);
1541 if (ret)
1542 return ret;
1543
1544
1545 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1546 if (ret)
1547 goto streamoff;
1548 /* Get the next frame from the buffer queue */
1549 vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
1550 struct videobuf_buffer, queue);
1551 vpfe_dev->cur_frm = vpfe_dev->next_frm;
1552 /* Remove buffer from the buffer queue */
1553 list_del(&vpfe_dev->cur_frm->queue);
1554 /* Mark state of the current frame to active */
1555 vpfe_dev->cur_frm->state = VIDEOBUF_ACTIVE;
1556 /* Initialize field_id and started member */
1557 vpfe_dev->field_id = 0;
1558 addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
1559
1560 /* Calculate field offset */
1561 vpfe_calculate_offsets(vpfe_dev);
1562
1563 if (vpfe_attach_irq(vpfe_dev) < 0) {
1564 v4l2_err(&vpfe_dev->v4l2_dev,
1565 "Error in attaching interrupt handle\n");
1566 ret = -EFAULT;
1567 goto unlock_out;
1568 }
1569 if (ccdc_dev->hw_ops.configure() < 0) {
1570 v4l2_err(&vpfe_dev->v4l2_dev,
1571 "Error in configuring ccdc\n");
1572 ret = -EINVAL;
1573 goto unlock_out;
1574 }
1575 ccdc_dev->hw_ops.setfbaddr((unsigned long)(addr));
1576 vpfe_start_ccdc_capture(vpfe_dev);
1577 mutex_unlock(&vpfe_dev->lock);
1578 return ret;
1579unlock_out:
1580 mutex_unlock(&vpfe_dev->lock);
1581streamoff:
1582 ret = videobuf_streamoff(&vpfe_dev->buffer_queue);
1583 return ret;
1584}
1585
1586static int vpfe_streamoff(struct file *file, void *priv,
1587 enum v4l2_buf_type buf_type)
1588{
1589 struct vpfe_device *vpfe_dev = video_drvdata(file);
1590 struct vpfe_fh *fh = file->private_data;
1591 struct vpfe_subdev_info *sdinfo;
1592 int ret = 0;
1593
1594 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamoff\n");
1595
1596 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
1597 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1598 return -EINVAL;
1599 }
1600
1601 /* If io is allowed for this file handle, return error */
1602 if (!fh->io_allowed) {
1603 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1604 return -EACCES;
1605 }
1606
1607 /* If streaming is not started, return error */
1608 if (!vpfe_dev->started) {
1609 v4l2_err(&vpfe_dev->v4l2_dev, "device started\n");
1610 return -EINVAL;
1611 }
1612
1613 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1614 if (ret)
1615 return ret;
1616
1617 vpfe_stop_ccdc_capture(vpfe_dev);
1618 vpfe_detach_irq(vpfe_dev);
1619
1620 sdinfo = vpfe_dev->current_subdev;
1621 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1622 video, s_stream, 0);
1623
1624 if (ret && (ret != -ENOIOCTLCMD))
1625 v4l2_err(&vpfe_dev->v4l2_dev, "stream off failed in subdev\n");
1626 ret = videobuf_streamoff(&vpfe_dev->buffer_queue);
1627 mutex_unlock(&vpfe_dev->lock);
1628 return ret;
1629}
1630
1631static int vpfe_cropcap(struct file *file, void *priv,
1632 struct v4l2_cropcap *crop)
1633{
1634 struct vpfe_device *vpfe_dev = video_drvdata(file);
1635
1636 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_cropcap\n");
1637
0b66cf90 1638 if (vpfe_dev->std_index >= ARRAY_SIZE(vpfe_standards))
7da8a6cb
MK		 1639 return -EINVAL;
1640
1641 memset(crop, 0, sizeof(struct v4l2_cropcap));
1642 crop->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1643 crop->bounds.width = crop->defrect.width =
1644 vpfe_standards[vpfe_dev->std_index].width;
1645 crop->bounds.height = crop->defrect.height =
1646 vpfe_standards[vpfe_dev->std_index].height;
1647 crop->pixelaspect = vpfe_standards[vpfe_dev->std_index].pixelaspect;
1648 return 0;
1649}
1650
1651static int vpfe_g_crop(struct file *file, void *priv,
1652 struct v4l2_crop *crop)
1653{
1654 struct vpfe_device *vpfe_dev = video_drvdata(file);
1655
1656 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_crop\n");
1657
1658 crop->c = vpfe_dev->crop;
1659 return 0;
1660}
1661
1662static int vpfe_s_crop(struct file *file, void *priv,
1663 struct v4l2_crop *crop)
1664{
1665 struct vpfe_device *vpfe_dev = video_drvdata(file);
1666 int ret = 0;
1667
1668 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_crop\n");
1669
1670 if (vpfe_dev->started) {
1671 /* make sure streaming is not started */
1672 v4l2_err(&vpfe_dev->v4l2_dev,
1673 "Cannot change crop when streaming is ON\n");
1674 return -EBUSY;
1675 }
1676
1677 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1678 if (ret)
1679 return ret;
1680
1681 if (crop->c.top < 0 || crop->c.left < 0) {
1682 v4l2_err(&vpfe_dev->v4l2_dev,
1683 "doesn't support negative values for top & left\n");
1684 ret = -EINVAL;
1685 goto unlock_out;
1686 }
1687
1688 /* adjust the width to 16 pixel boundry */
1689 crop->c.width = ((crop->c.width + 15) & ~0xf);
1690
1691 /* make sure parameters are valid */
1692 if ((crop->c.left + crop->c.width >
1693 vpfe_dev->std_info.active_pixels) ||
1694 (crop->c.top + crop->c.height >
1695 vpfe_dev->std_info.active_lines)) {
1696 v4l2_err(&vpfe_dev->v4l2_dev, "Error in S_CROP params\n");
1697 ret = -EINVAL;
1698 goto unlock_out;
1699 }
1700 ccdc_dev->hw_ops.set_image_window(&crop->c);
1701 vpfe_dev->fmt.fmt.pix.width = crop->c.width;
1702 vpfe_dev->fmt.fmt.pix.height = crop->c.height;
1703 vpfe_dev->fmt.fmt.pix.bytesperline =
1704 ccdc_dev->hw_ops.get_line_length();
1705 vpfe_dev->fmt.fmt.pix.sizeimage =
1706 vpfe_dev->fmt.fmt.pix.bytesperline *
1707 vpfe_dev->fmt.fmt.pix.height;
1708 vpfe_dev->crop = crop->c;
1709unlock_out:
1710 mutex_unlock(&vpfe_dev->lock);
1711 return ret;
1712}
1713
1714
1715static long vpfe_param_handler(struct file *file, void *priv,
1716 int cmd, void *param)
1717{
1718 struct vpfe_device *vpfe_dev = video_drvdata(file);
1719 int ret = 0;
1720
6a4f0623 1721 v4l2_dbg(2, debug, &vpfe_dev->v4l2_dev, "vpfe_param_handler\n");
7da8a6cb
MK		 1722
1723 if (vpfe_dev->started) {
1724 /* only allowed if streaming is not started */
6a4f0623
MK		 1725 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1726 "device already started\n");
7da8a6cb
MK		 1727 return -EBUSY;
1728 }
1729
1730 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1731 if (ret)
1732 return ret;
1733
1734 switch (cmd) {
1735 case VPFE_CMD_S_CCDC_RAW_PARAMS:
1736 v4l2_warn(&vpfe_dev->v4l2_dev,
1737 "VPFE_CMD_S_CCDC_RAW_PARAMS: experimental ioctl\n");
6a4f0623
MK		 1738 if (ccdc_dev->hw_ops.set_params) {
1739 ret = ccdc_dev->hw_ops.set_params(param);
1740 if (ret) {
1741 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1742 "Error setting parameters in CCDC\n");
1743 goto unlock_out;
1744 }
1745 if (vpfe_get_ccdc_image_format(vpfe_dev,
1746 &vpfe_dev->fmt) < 0) {
1747 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1748 "Invalid image format at CCDC\n");
1749 goto unlock_out;
1750 }
1751 } else {
1752 ret = -EINVAL;
1753 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1754 "VPFE_CMD_S_CCDC_RAW_PARAMS not supported\n");
7da8a6cb
MK		 1755 }
1756 break;
1757 default:
1758 ret = -EINVAL;
1759 }
1760unlock_out:
1761 mutex_unlock(&vpfe_dev->lock);
1762 return ret;
1763}
1764
1765
1766/* vpfe capture ioctl operations */
1767static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
1768 .vidioc_querycap = vpfe_querycap,
1769 .vidioc_g_fmt_vid_cap = vpfe_g_fmt_vid_cap,
1770 .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt_vid_cap,
1771 .vidioc_s_fmt_vid_cap = vpfe_s_fmt_vid_cap,
1772 .vidioc_try_fmt_vid_cap = vpfe_try_fmt_vid_cap,
1773 .vidioc_enum_input = vpfe_enum_input,
1774 .vidioc_g_input = vpfe_g_input,
1775 .vidioc_s_input = vpfe_s_input,
1776 .vidioc_querystd = vpfe_querystd,
1777 .vidioc_s_std = vpfe_s_std,
1778 .vidioc_g_std = vpfe_g_std,
d73bfc5f
VH		 1779 .vidioc_queryctrl = vpfe_queryctrl,
1780 .vidioc_g_ctrl = vpfe_g_ctrl,
1781 .vidioc_s_ctrl = vpfe_s_ctrl,
7da8a6cb
MK		 1782 .vidioc_reqbufs = vpfe_reqbufs,
1783 .vidioc_querybuf = vpfe_querybuf,
1784 .vidioc_qbuf = vpfe_qbuf,
1785 .vidioc_dqbuf = vpfe_dqbuf,
1786 .vidioc_streamon = vpfe_streamon,
1787 .vidioc_streamoff = vpfe_streamoff,
1788 .vidioc_cropcap = vpfe_cropcap,
1789 .vidioc_g_crop = vpfe_g_crop,
1790 .vidioc_s_crop = vpfe_s_crop,
1791 .vidioc_default = vpfe_param_handler,
1792};
1793
1794static struct vpfe_device *vpfe_initialize(void)
1795{
1796 struct vpfe_device *vpfe_dev;
1797
1798 /* Default number of buffers should be 3 */
1799 if ((numbuffers > 0) &&
1800 (numbuffers < config_params.min_numbuffers))
1801 numbuffers = config_params.min_numbuffers;
1802
1803 /*
1804 * Set buffer size to min buffers size if invalid buffer size is
1805 * given
1806 */
1807 if (bufsize < config_params.min_bufsize)
1808 bufsize = config_params.min_bufsize;
1809
1810 config_params.numbuffers = numbuffers;
1811
1812 if (numbuffers)
1813 config_params.device_bufsize = bufsize;
1814
1815 /* Allocate memory for device objects */
1816 vpfe_dev = kzalloc(sizeof(*vpfe_dev), GFP_KERNEL);
1817
1818 return vpfe_dev;
1819}
1820
7da8a6cb
MK		 1821/*
1822 * vpfe_probe : This function creates device entries by register
1823 * itself to the V4L2 driver and initializes fields of each
1824 * device objects
1825 */
1826static __init int vpfe_probe(struct platform_device *pdev)
1827{
1828 struct vpfe_subdev_info *sdinfo;
1829 struct vpfe_config *vpfe_cfg;
1830 struct resource *res1;
1831 struct vpfe_device *vpfe_dev;
1832 struct i2c_adapter *i2c_adap;
1833 struct video_device *vfd;
1834 int ret = -ENOMEM, i, j;
1835 int num_subdevs = 0;
1836
1837 /* Get the pointer to the device object */
1838 vpfe_dev = vpfe_initialize();
1839
1840 if (!vpfe_dev) {
1841 v4l2_err(pdev->dev.driver,
1842 "Failed to allocate memory for vpfe_dev\n");
1843 return ret;
1844 }
1845
1846 vpfe_dev->pdev = &pdev->dev;
1847
1848 if (NULL == pdev->dev.platform_data) {
1849 v4l2_err(pdev->dev.driver, "Unable to get vpfe config\n");
51444ea3 1850 ret = -ENODEV;
7da8a6cb
MK		 1851 goto probe_free_dev_mem;
1852 }
1853
1854 vpfe_cfg = pdev->dev.platform_data;
1855 vpfe_dev->cfg = vpfe_cfg;
1856 if (NULL == vpfe_cfg->ccdc ||
1857 NULL == vpfe_cfg->card_name ||
1858 NULL == vpfe_cfg->sub_devs) {
1859 v4l2_err(pdev->dev.driver, "null ptr in vpfe_cfg\n");
1860 ret = -ENOENT;
1861 goto probe_free_dev_mem;
1862 }
1863
7da8a6cb
MK		 1864 /* Allocate memory for ccdc configuration */
1865 ccdc_cfg = kmalloc(sizeof(struct ccdc_config), GFP_KERNEL);
1866 if (NULL == ccdc_cfg) {
1867 v4l2_err(pdev->dev.driver,
1868 "Memory allocation failed for ccdc_cfg\n");
ab51bec1 1869 goto probe_free_lock;
7da8a6cb
MK		 1870 }
1871
2b080c5d
DC		 1872 mutex_lock(&ccdc_lock);
1873
7da8a6cb
MK		 1874 strncpy(ccdc_cfg->name, vpfe_cfg->ccdc, 32);
1875 /* Get VINT0 irq resource */
1876 res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1877 if (!res1) {
1878 v4l2_err(pdev->dev.driver,
1879 "Unable to get interrupt for VINT0\n");
51444ea3
MK		 1880 ret = -ENODEV;
1881 goto probe_free_ccdc_cfg_mem;
7da8a6cb
MK		 1882 }
1883 vpfe_dev->ccdc_irq0 = res1->start;
1884
1885 /* Get VINT1 irq resource */
51444ea3 1886 res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
7da8a6cb
MK		 1887 if (!res1) {
1888 v4l2_err(pdev->dev.driver,
1889 "Unable to get interrupt for VINT1\n");
51444ea3
MK		 1890 ret = -ENODEV;
1891 goto probe_free_ccdc_cfg_mem;
7da8a6cb
MK		 1892 }
1893 vpfe_dev->ccdc_irq1 = res1->start;
1894
7da8a6cb
MK		 1895 ret = request_irq(vpfe_dev->ccdc_irq0, vpfe_isr, IRQF_DISABLED,
1896 "vpfe_capture0", vpfe_dev);
1897
1898 if (0 != ret) {
1899 v4l2_err(pdev->dev.driver, "Unable to request interrupt\n");
51444ea3 1900 goto probe_free_ccdc_cfg_mem;
7da8a6cb
MK		 1901 }
1902
1903 /* Allocate memory for video device */
1904 vfd = video_device_alloc();
1905 if (NULL == vfd) {
1906 ret = -ENOMEM;
51444ea3 1907 v4l2_err(pdev->dev.driver, "Unable to alloc video device\n");
7da8a6cb
MK		 1908 goto probe_out_release_irq;
1909 }
1910
1911 /* Initialize field of video device */
1912 vfd->release = video_device_release;
1913 vfd->fops = &vpfe_fops;
1914 vfd->ioctl_ops = &vpfe_ioctl_ops;
7da8a6cb
MK		 1915 vfd->tvnorms = 0;
1916 vfd->current_norm = V4L2_STD_PAL;
1917 vfd->v4l2_dev = &vpfe_dev->v4l2_dev;
1918 snprintf(vfd->name, sizeof(vfd->name),
1919 "%s_V%d.%d.%d",
1920 CAPTURE_DRV_NAME,
1921 (VPFE_CAPTURE_VERSION_CODE >> 16) & 0xff,
1922 (VPFE_CAPTURE_VERSION_CODE >> 8) & 0xff,
1923 (VPFE_CAPTURE_VERSION_CODE) & 0xff);
1924 /* Set video_dev to the video device */
1925 vpfe_dev->video_dev = vfd;
1926
1927 ret = v4l2_device_register(&pdev->dev, &vpfe_dev->v4l2_dev);
1928 if (ret) {
1929 v4l2_err(pdev->dev.driver,
1930 "Unable to register v4l2 device.\n");
1931 goto probe_out_video_release;
1932 }
1933 v4l2_info(&vpfe_dev->v4l2_dev, "v4l2 device registered\n");
1934 spin_lock_init(&vpfe_dev->irqlock);
1935 spin_lock_init(&vpfe_dev->dma_queue_lock);
1936 mutex_init(&vpfe_dev->lock);
1937
1938 /* Initialize field of the device objects */
1939 vpfe_dev->numbuffers = config_params.numbuffers;
1940
1941 /* Initialize prio member of device object */
1942 v4l2_prio_init(&vpfe_dev->prio);
1943 /* register video device */
1944 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1945 "trying to register vpfe device.\n");
1946 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1947 "video_dev=%x\n", (int)&vpfe_dev->video_dev);
1948 vpfe_dev->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1949 ret = video_register_device(vpfe_dev->video_dev,
1950 VFL_TYPE_GRABBER, -1);
1951
1952 if (ret) {
1953 v4l2_err(pdev->dev.driver,
1954 "Unable to register video device.\n");
1955 goto probe_out_v4l2_unregister;
1956 }
1957
1958 v4l2_info(&vpfe_dev->v4l2_dev, "video device registered\n");
1959 /* set the driver data in platform device */
1960 platform_set_drvdata(pdev, vpfe_dev);
1961 /* set driver private data */
1962 video_set_drvdata(vpfe_dev->video_dev, vpfe_dev);
14cbaafe 1963 i2c_adap = i2c_get_adapter(vpfe_cfg->i2c_adapter_id);
7da8a6cb
MK		 1964 num_subdevs = vpfe_cfg->num_subdevs;
1965 vpfe_dev->sd = kmalloc(sizeof(struct v4l2_subdev *) * num_subdevs,
1966 GFP_KERNEL);
1967 if (NULL == vpfe_dev->sd) {
1968 v4l2_err(&vpfe_dev->v4l2_dev,
1969 "unable to allocate memory for subdevice pointers\n");
1970 ret = -ENOMEM;
1971 goto probe_out_video_unregister;
1972 }
1973
1974 for (i = 0; i < num_subdevs; i++) {
1975 struct v4l2_input *inps;
1976
1977 sdinfo = &vpfe_cfg->sub_devs[i];
1978
1979 /* Load up the subdevice */
1980 vpfe_dev->sd[i] =
1981 v4l2_i2c_new_subdev_board(&vpfe_dev->v4l2_dev,
1982 i2c_adap,
1983 sdinfo->name,
1984 &sdinfo->board_info,
1985 NULL);
1986 if (vpfe_dev->sd[i]) {
1987 v4l2_info(&vpfe_dev->v4l2_dev,
1988 "v4l2 sub device %s registered\n",
1989 sdinfo->name);
1990 vpfe_dev->sd[i]->grp_id = sdinfo->grp_id;
1991 /* update tvnorms from the sub devices */
1992 for (j = 0; j < sdinfo->num_inputs; j++) {
1993 inps = &sdinfo->inputs[j];
1994 vfd->tvnorms |= inps->std;
1995 }
1996 } else {
1997 v4l2_info(&vpfe_dev->v4l2_dev,
1998 "v4l2 sub device %s register fails\n",
1999 sdinfo->name);
2000 goto probe_sd_out;
2001 }
2002 }
2003
2004 /* set first sub device as current one */
2005 vpfe_dev->current_subdev = &vpfe_cfg->sub_devs[0];
2006
2007 /* We have at least one sub device to work with */
2008 mutex_unlock(&ccdc_lock);
2009 return 0;
2010
2011probe_sd_out:
2012 kfree(vpfe_dev->sd);
2013probe_out_video_unregister:
2014 video_unregister_device(vpfe_dev->video_dev);
2015probe_out_v4l2_unregister:
2016 v4l2_device_unregister(&vpfe_dev->v4l2_dev);
2017probe_out_video_release:
f0813b4c 2018 if (!video_is_registered(vpfe_dev->video_dev))
7da8a6cb
MK		 2019 video_device_release(vpfe_dev->video_dev);
2020probe_out_release_irq:
2021 free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
51444ea3 2022probe_free_ccdc_cfg_mem:
7da8a6cb 2023 kfree(ccdc_cfg);
ab51bec1
MK		 2024probe_free_lock:
2025 mutex_unlock(&ccdc_lock);
7da8a6cb
MK		 2026probe_free_dev_mem:
2027 kfree(vpfe_dev);
2028 return ret;
2029}
2030
2031/*
2032 * vpfe_remove : It un-register device from V4L2 driver
2033 */
9d893824 2034static int __devexit vpfe_remove(struct platform_device *pdev)
7da8a6cb
MK		 2035{
2036 struct vpfe_device *vpfe_dev = platform_get_drvdata(pdev);
7da8a6cb
MK		 2037
2038 v4l2_info(pdev->dev.driver, "vpfe_remove\n");
2039
2040 free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
2041 kfree(vpfe_dev->sd);
2042 v4l2_device_unregister(&vpfe_dev->v4l2_dev);
2043 video_unregister_device(vpfe_dev->video_dev);
7da8a6cb
MK		 2044 kfree(vpfe_dev);
2045 kfree(ccdc_cfg);
2046 return 0;
2047}
2048
aa2dc903 2049static int vpfe_suspend(struct device *dev)
7da8a6cb 2050{
aa2dc903 2051 return 0;
7da8a6cb
MK		 2052}
2053
aa2dc903 2054static int vpfe_resume(struct device *dev)
7da8a6cb 2055{
aa2dc903 2056 return 0;
7da8a6cb
MK		 2057}
2058
47145210 2059static const struct dev_pm_ops vpfe_dev_pm_ops = {
7da8a6cb
MK		 2060 .suspend = vpfe_suspend,
2061 .resume = vpfe_resume,
2062};
2063
2064static struct platform_driver vpfe_driver = {
2065 .driver = {
2066 .name = CAPTURE_DRV_NAME,
2067 .owner = THIS_MODULE,
2068 .pm = &vpfe_dev_pm_ops,
2069 },
2070 .probe = vpfe_probe,
2071 .remove = __devexit_p(vpfe_remove),
2072};
2073
2074static __init int vpfe_init(void)
2075{
2076 printk(KERN_NOTICE "vpfe_init\n");
2077 /* Register driver to the kernel */
2078 return platform_driver_register(&vpfe_driver);
2079}
2080
2081/*
2082 * vpfe_cleanup : This function un-registers device driver
2083 */
2084static void vpfe_cleanup(void)
2085{
2086 platform_driver_unregister(&vpfe_driver);
2087}
2088
2089module_init(vpfe_init);
2090module_exit(vpfe_cleanup);
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