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[media] DaVinci-VPFE-Capture: Improve another size determination in vpfe_probe()
[mirror_ubuntu-artful-kernel.git] / drivers / media / platform / davinci / vpfe_capture.c
CommitLineData
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
47c0b565 128static const struct vpfe_standard vpfe_standards[] = {
7da8a6cb
MK		 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.
da298c6d 373 * It then checks if sub device supports get_fmt and then override the
7da8a6cb
MK		 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,
314527ac 379 v4l2_std_id std_id)
7da8a6cb
MK		 380{
381 struct vpfe_subdev_info *sdinfo = vpfe_dev->current_subdev;
da298c6d
HV		 382 struct v4l2_subdev_format fmt = {
383 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
384 };
385 struct v4l2_mbus_framefmt *mbus_fmt = &fmt.format;
d3ca7759 386 struct v4l2_pix_format *pix = &vpfe_dev->fmt.fmt.pix;
7da8a6cb
MK		 387 int i, ret = 0;
388
389 for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {
314527ac 390 if (vpfe_standards[i].std_id & std_id) {
7da8a6cb
MK		 391 vpfe_dev->std_info.active_pixels =
392 vpfe_standards[i].width;
393 vpfe_dev->std_info.active_lines =
394 vpfe_standards[i].height;
395 vpfe_dev->std_info.frame_format =
396 vpfe_standards[i].frame_format;
397 vpfe_dev->std_index = i;
398 break;
399 }
400 }
401
402 if (i == ARRAY_SIZE(vpfe_standards)) {
403 v4l2_err(&vpfe_dev->v4l2_dev, "standard not supported\n");
404 return -EINVAL;
405 }
406
407 vpfe_dev->crop.top = 0;
408 vpfe_dev->crop.left = 0;
409 vpfe_dev->crop.width = vpfe_dev->std_info.active_pixels;
410 vpfe_dev->crop.height = vpfe_dev->std_info.active_lines;
d3ca7759
HV		 411 pix->width = vpfe_dev->crop.width;
412 pix->height = vpfe_dev->crop.height;
7da8a6cb
MK		 413
414 /* first field and frame format based on standard frame format */
415 if (vpfe_dev->std_info.frame_format) {
d3ca7759 416 pix->field = V4L2_FIELD_INTERLACED;
7da8a6cb 417 /* assume V4L2_PIX_FMT_UYVY as default */
d3ca7759 418 pix->pixelformat = V4L2_PIX_FMT_UYVY;
da298c6d 419 v4l2_fill_mbus_format(mbus_fmt, pix,
27ffaeb0 420 MEDIA_BUS_FMT_YUYV10_2X10);
7da8a6cb 421 } else {
d3ca7759 422 pix->field = V4L2_FIELD_NONE;
7da8a6cb 423 /* assume V4L2_PIX_FMT_SBGGR8 */
d3ca7759 424 pix->pixelformat = V4L2_PIX_FMT_SBGGR8;
da298c6d 425 v4l2_fill_mbus_format(mbus_fmt, pix,
27ffaeb0 426 MEDIA_BUS_FMT_SBGGR8_1X8);
7da8a6cb
MK		 427 }
428
da298c6d 429 /* if sub device supports get_fmt, override the defaults */
7da8a6cb 430 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
da298c6d 431 sdinfo->grp_id, pad, get_fmt, NULL, &fmt);
7da8a6cb
MK		 432
433 if (ret && ret != -ENOIOCTLCMD) {
434 v4l2_err(&vpfe_dev->v4l2_dev,
da298c6d 435 "error in getting get_fmt from sub device\n");
7da8a6cb
MK		 436 return ret;
437 }
da298c6d 438 v4l2_fill_pix_format(pix, mbus_fmt);
d3ca7759
HV		 439 pix->bytesperline = pix->width * 2;
440 pix->sizeimage = pix->bytesperline * pix->height;
7da8a6cb
MK		 441
442 /* Sets the values in CCDC */
443 ret = vpfe_config_ccdc_image_format(vpfe_dev);
444 if (ret)
445 return ret;
446
447 /* Update the values of sizeimage and bytesperline */
692f6375
DC		 448 pix->bytesperline = ccdc_dev->hw_ops.get_line_length();
449 pix->sizeimage = pix->bytesperline * pix->height;
450
451 return 0;
7da8a6cb
MK		 452}
453
454static int vpfe_initialize_device(struct vpfe_device *vpfe_dev)
455{
456 int ret = 0;
457
458 /* set first input of current subdevice as the current input */
459 vpfe_dev->current_input = 0;
460
461 /* set default standard */
462 vpfe_dev->std_index = 0;
463
464 /* Configure the default format information */
465 ret = vpfe_config_image_format(vpfe_dev,
314527ac 466 vpfe_standards[vpfe_dev->std_index].std_id);
7da8a6cb
MK		 467 if (ret)
468 return ret;
469
470 /* now open the ccdc device to initialize it */
471 mutex_lock(&ccdc_lock);
472 if (NULL == ccdc_dev) {
473 v4l2_err(&vpfe_dev->v4l2_dev, "ccdc device not registered\n");
474 ret = -ENODEV;
475 goto unlock;
476 }
477
478 if (!try_module_get(ccdc_dev->owner)) {
479 v4l2_err(&vpfe_dev->v4l2_dev, "Couldn't lock ccdc module\n");
480 ret = -ENODEV;
481 goto unlock;
482 }
483 ret = ccdc_dev->hw_ops.open(vpfe_dev->pdev);
484 if (!ret)
485 vpfe_dev->initialized = 1;
085b54a2
VH		 486
487 /* Clear all VPFE/CCDC interrupts */
488 if (vpfe_dev->cfg->clr_intr)
489 vpfe_dev->cfg->clr_intr(-1);
490
7da8a6cb
MK		 491unlock:
492 mutex_unlock(&ccdc_lock);
493 return ret;
494}
495
496/*
497 * vpfe_open : It creates object of file handle structure and
498 * stores it in private_data member of filepointer
499 */
500static int vpfe_open(struct file *file)
501{
502 struct vpfe_device *vpfe_dev = video_drvdata(file);
3bdaa382 503 struct video_device *vdev = video_devdata(file);
7da8a6cb
MK		 504 struct vpfe_fh *fh;
505
506 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_open\n");
507
508 if (!vpfe_dev->cfg->num_subdevs) {
509 v4l2_err(&vpfe_dev->v4l2_dev, "No decoder registered\n");
510 return -ENODEV;
511 }
512
513 /* Allocate memory for the file handle object */
514 fh = kmalloc(sizeof(struct vpfe_fh), GFP_KERNEL);
11691f0e 515 if (!fh)
7da8a6cb 516 return -ENOMEM;
11691f0e 517
7da8a6cb
MK		 518 /* store pointer to fh in private_data member of file */
519 file->private_data = fh;
520 fh->vpfe_dev = vpfe_dev;
3bdaa382 521 v4l2_fh_init(&fh->fh, vdev);
7da8a6cb
MK		 522 mutex_lock(&vpfe_dev->lock);
523 /* If decoder is not initialized. initialize it */
524 if (!vpfe_dev->initialized) {
525 if (vpfe_initialize_device(vpfe_dev)) {
526 mutex_unlock(&vpfe_dev->lock);
527 return -ENODEV;
528 }
529 }
530 /* Increment device usrs counter */
531 vpfe_dev->usrs++;
532 /* Set io_allowed member to false */
533 fh->io_allowed = 0;
3bdaa382 534 v4l2_fh_add(&fh->fh);
7da8a6cb
MK		 535 mutex_unlock(&vpfe_dev->lock);
536 return 0;
537}
538
539static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe_dev)
540{
541 unsigned long addr;
542
543 vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
544 struct videobuf_buffer, queue);
545 list_del(&vpfe_dev->next_frm->queue);
546 vpfe_dev->next_frm->state = VIDEOBUF_ACTIVE;
547 addr = videobuf_to_dma_contig(vpfe_dev->next_frm);
844cc0dc
VH		 548
549 ccdc_dev->hw_ops.setfbaddr(addr);
550}
551
552static void vpfe_schedule_bottom_field(struct vpfe_device *vpfe_dev)
553{
554 unsigned long addr;
555
556 addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
557 addr += vpfe_dev->field_off;
7da8a6cb
MK		 558 ccdc_dev->hw_ops.setfbaddr(addr);
559}
560
561static void vpfe_process_buffer_complete(struct vpfe_device *vpfe_dev)
562{
8e6057b5 563 v4l2_get_timestamp(&vpfe_dev->cur_frm->ts);
7da8a6cb
MK		 564 vpfe_dev->cur_frm->state = VIDEOBUF_DONE;
565 vpfe_dev->cur_frm->size = vpfe_dev->fmt.fmt.pix.sizeimage;
566 wake_up_interruptible(&vpfe_dev->cur_frm->done);
567 vpfe_dev->cur_frm = vpfe_dev->next_frm;
568}
569
570/* ISR for VINT0*/
571static irqreturn_t vpfe_isr(int irq, void *dev_id)
572{
573 struct vpfe_device *vpfe_dev = dev_id;
574 enum v4l2_field field;
7da8a6cb
MK		 575 int fid;
576
577 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nStarting vpfe_isr...\n");
578 field = vpfe_dev->fmt.fmt.pix.field;
579
580 /* if streaming not started, don't do anything */
581 if (!vpfe_dev->started)
085b54a2 582 goto clear_intr;
7da8a6cb
MK		 583
584 /* only for 6446 this will be applicable */
585 if (NULL != ccdc_dev->hw_ops.reset)
586 ccdc_dev->hw_ops.reset();
587
588 if (field == V4L2_FIELD_NONE) {
589 /* handle progressive frame capture */
590 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
591 "frame format is progressive...\n");
592 if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
593 vpfe_process_buffer_complete(vpfe_dev);
085b54a2 594 goto clear_intr;
7da8a6cb
MK		 595 }
596
597 /* interlaced or TB capture check which field we are in hardware */
598 fid = ccdc_dev->hw_ops.getfid();
599
600 /* switch the software maintained field id */
601 vpfe_dev->field_id ^= 1;
602 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "field id = %x:%x.\n",
603 fid, vpfe_dev->field_id);
604 if (fid == vpfe_dev->field_id) {
605 /* we are in-sync here,continue */
606 if (fid == 0) {
607 /*
608 * One frame is just being captured. If the next frame
609 * is available, release the current frame and move on
610 */
611 if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
612 vpfe_process_buffer_complete(vpfe_dev);
613 /*
614 * based on whether the two fields are stored
615 * interleavely or separately in memory, reconfigure
616 * the CCDC memory address
617 */
618 if (field == V4L2_FIELD_SEQ_TB) {
844cc0dc 619 vpfe_schedule_bottom_field(vpfe_dev);
7da8a6cb 620 }
085b54a2 621 goto clear_intr;
7da8a6cb
MK		 622 }
623 /*
624 * if one field is just being captured configure
625 * the next frame get the next frame from the empty
626 * queue if no frame is available hold on to the
627 * current buffer
628 */
629 spin_lock(&vpfe_dev->dma_queue_lock);
630 if (!list_empty(&vpfe_dev->dma_queue) &&
631 vpfe_dev->cur_frm == vpfe_dev->next_frm)
632 vpfe_schedule_next_buffer(vpfe_dev);
633 spin_unlock(&vpfe_dev->dma_queue_lock);
634 } else if (fid == 0) {
635 /*
636 * out of sync. Recover from any hardware out-of-sync.
637 * May loose one frame
638 */
639 vpfe_dev->field_id = fid;
640 }
085b54a2
VH		 641clear_intr:
642 if (vpfe_dev->cfg->clr_intr)
643 vpfe_dev->cfg->clr_intr(irq);
644
7da8a6cb
MK		 645 return IRQ_HANDLED;
646}
647
648/* vdint1_isr - isr handler for VINT1 interrupt */
649static irqreturn_t vdint1_isr(int irq, void *dev_id)
650{
651 struct vpfe_device *vpfe_dev = dev_id;
652
653 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nInside vdint1_isr...\n");
654
655 /* if streaming not started, don't do anything */
085b54a2
VH		 656 if (!vpfe_dev->started) {
657 if (vpfe_dev->cfg->clr_intr)
658 vpfe_dev->cfg->clr_intr(irq);
7da8a6cb 659 return IRQ_HANDLED;
085b54a2 660 }
7da8a6cb
MK		 661
662 spin_lock(&vpfe_dev->dma_queue_lock);
663 if ((vpfe_dev->fmt.fmt.pix.field == V4L2_FIELD_NONE) &&
664 !list_empty(&vpfe_dev->dma_queue) &&
665 vpfe_dev->cur_frm == vpfe_dev->next_frm)
666 vpfe_schedule_next_buffer(vpfe_dev);
667 spin_unlock(&vpfe_dev->dma_queue_lock);
085b54a2
VH		 668
669 if (vpfe_dev->cfg->clr_intr)
670 vpfe_dev->cfg->clr_intr(irq);
671
7da8a6cb
MK		 672 return IRQ_HANDLED;
673}
674
675static void vpfe_detach_irq(struct vpfe_device *vpfe_dev)
676{
677 enum ccdc_frmfmt frame_format;
678
679 frame_format = ccdc_dev->hw_ops.get_frame_format();
680 if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
1ead696b 681 free_irq(vpfe_dev->ccdc_irq1, vpfe_dev);
7da8a6cb
MK		 682}
683
684static int vpfe_attach_irq(struct vpfe_device *vpfe_dev)
685{
686 enum ccdc_frmfmt frame_format;
687
688 frame_format = ccdc_dev->hw_ops.get_frame_format();
689 if (frame_format == CCDC_FRMFMT_PROGRESSIVE) {
690 return request_irq(vpfe_dev->ccdc_irq1, vdint1_isr,
d8c279a0 691 0, "vpfe_capture1",
7da8a6cb
MK		 692 vpfe_dev);
693 }
694 return 0;
695}
696
697/* vpfe_stop_ccdc_capture: stop streaming in ccdc/isif */
698static void vpfe_stop_ccdc_capture(struct vpfe_device *vpfe_dev)
699{
700 vpfe_dev->started = 0;
701 ccdc_dev->hw_ops.enable(0);
702 if (ccdc_dev->hw_ops.enable_out_to_sdram)
703 ccdc_dev->hw_ops.enable_out_to_sdram(0);
704}
705
706/*
707 * vpfe_release : This function deletes buffer queue, frees the
708 * buffers and the vpfe file handle
709 */
710static int vpfe_release(struct file *file)
711{
712 struct vpfe_device *vpfe_dev = video_drvdata(file);
713 struct vpfe_fh *fh = file->private_data;
714 struct vpfe_subdev_info *sdinfo;
715 int ret;
716
717 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_release\n");
718
719 /* Get the device lock */
720 mutex_lock(&vpfe_dev->lock);
721 /* if this instance is doing IO */
722 if (fh->io_allowed) {
723 if (vpfe_dev->started) {
724 sdinfo = vpfe_dev->current_subdev;
725 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
726 sdinfo->grp_id,
727 video, s_stream, 0);
728 if (ret && (ret != -ENOIOCTLCMD))
729 v4l2_err(&vpfe_dev->v4l2_dev,
730 "stream off failed in subdev\n");
731 vpfe_stop_ccdc_capture(vpfe_dev);
732 vpfe_detach_irq(vpfe_dev);
733 videobuf_streamoff(&vpfe_dev->buffer_queue);
734 }
735 vpfe_dev->io_usrs = 0;
736 vpfe_dev->numbuffers = config_params.numbuffers;
c1d1e40b
LP		 737 videobuf_stop(&vpfe_dev->buffer_queue);
738 videobuf_mmap_free(&vpfe_dev->buffer_queue);
7da8a6cb
MK		 739 }
740
741 /* Decrement device usrs counter */
742 vpfe_dev->usrs--;
3bdaa382
LP		 743 v4l2_fh_del(&fh->fh);
744 v4l2_fh_exit(&fh->fh);
7da8a6cb
MK		 745 /* If this is the last file handle */
746 if (!vpfe_dev->usrs) {
747 vpfe_dev->initialized = 0;
748 if (ccdc_dev->hw_ops.close)
749 ccdc_dev->hw_ops.close(vpfe_dev->pdev);
750 module_put(ccdc_dev->owner);
751 }
752 mutex_unlock(&vpfe_dev->lock);
753 file->private_data = NULL;
754 /* Free memory allocated to file handle object */
755 kfree(fh);
756 return 0;
757}
758
759/*
760 * vpfe_mmap : It is used to map kernel space buffers
761 * into user spaces
762 */
763static int vpfe_mmap(struct file *file, struct vm_area_struct *vma)
764{
765 /* Get the device object and file handle object */
766 struct vpfe_device *vpfe_dev = video_drvdata(file);
767
768 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_mmap\n");
769
770 return videobuf_mmap_mapper(&vpfe_dev->buffer_queue, vma);
771}
772
773/*
774 * vpfe_poll: It is used for select/poll system call
775 */
776static unsigned int vpfe_poll(struct file *file, poll_table *wait)
777{
778 struct vpfe_device *vpfe_dev = video_drvdata(file);
779
780 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_poll\n");
781
782 if (vpfe_dev->started)
783 return videobuf_poll_stream(file,
784 &vpfe_dev->buffer_queue, wait);
785 return 0;
786}
787
788/* vpfe capture driver file operations */
789static const struct v4l2_file_operations vpfe_fops = {
790 .owner = THIS_MODULE,
791 .open = vpfe_open,
792 .release = vpfe_release,
793 .unlocked_ioctl = video_ioctl2,
794 .mmap = vpfe_mmap,
795 .poll = vpfe_poll
796};
797
798/*
799 * vpfe_check_format()
800 * This function adjust the input pixel format as per hardware
801 * capabilities and update the same in pixfmt.
802 * Following algorithm used :-
803 *
804 * If given pixformat is not in the vpfe list of pix formats or not
805 * supported by the hardware, current value of pixformat in the device
806 * is used
807 * If given field is not supported, then current field is used. If field
808 * is different from current, then it is matched with that from sub device.
809 * Minimum height is 2 lines for interlaced or tb field and 1 line for
810 * progressive. Maximum height is clamped to active active lines of scan
811 * Minimum width is 32 bytes in memory and width is clamped to active
812 * pixels of scan.
813 * bytesperline is a multiple of 32.
814 */
815static const struct vpfe_pixel_format *
816 vpfe_check_format(struct vpfe_device *vpfe_dev,
817 struct v4l2_pix_format *pixfmt)
818{
819 u32 min_height = 1, min_width = 32, max_width, max_height;
820 const struct vpfe_pixel_format *vpfe_pix_fmt;
821 u32 pix;
822 int temp, found;
823
824 vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
825 if (NULL == vpfe_pix_fmt) {
826 /*
827 * use current pixel format in the vpfe device. We
828 * will find this pix format in the table
829 */
830 pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
831 vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
832 }
833
834 /* check if hw supports it */
835 temp = 0;
836 found = 0;
837 while (ccdc_dev->hw_ops.enum_pix(&pix, temp) >= 0) {
838 if (vpfe_pix_fmt->fmtdesc.pixelformat == pix) {
839 found = 1;
840 break;
841 }
842 temp++;
843 }
844
845 if (!found) {
846 /* use current pixel format */
847 pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
848 /*
849 * Since this is currently used in the vpfe device, we
850 * will find this pix format in the table
851 */
852 vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
853 }
854
855 /* check what field format is supported */
856 if (pixfmt->field == V4L2_FIELD_ANY) {
857 /* if field is any, use current value as default */
858 pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
859 }
860
861 /*
862 * if field is not same as current field in the vpfe device
863 * try matching the field with the sub device field
864 */
865 if (vpfe_dev->fmt.fmt.pix.field != pixfmt->field) {
866 /*
867 * If field value is not in the supported fields, use current
868 * field used in the device as default
869 */
870 switch (pixfmt->field) {
871 case V4L2_FIELD_INTERLACED:
872 case V4L2_FIELD_SEQ_TB:
873 /* if sub device is supporting progressive, use that */
874 if (!vpfe_dev->std_info.frame_format)
875 pixfmt->field = V4L2_FIELD_NONE;
876 break;
877 case V4L2_FIELD_NONE:
878 if (vpfe_dev->std_info.frame_format)
879 pixfmt->field = V4L2_FIELD_INTERLACED;
880 break;
881
882 default:
883 /* use current field as default */
884 pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
885 break;
886 }
887 }
888
889 /* Now adjust image resolutions supported */
890 if (pixfmt->field == V4L2_FIELD_INTERLACED ||
891 pixfmt->field == V4L2_FIELD_SEQ_TB)
892 min_height = 2;
893
894 max_width = vpfe_dev->std_info.active_pixels;
895 max_height = vpfe_dev->std_info.active_lines;
896 min_width /= vpfe_pix_fmt->bpp;
897
898 v4l2_info(&vpfe_dev->v4l2_dev, "width = %d, height = %d, bpp = %d\n",
899 pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp);
900
901 pixfmt->width = clamp((pixfmt->width), min_width, max_width);
902 pixfmt->height = clamp((pixfmt->height), min_height, max_height);
903
904 /* If interlaced, adjust height to be a multiple of 2 */
905 if (pixfmt->field == V4L2_FIELD_INTERLACED)
906 pixfmt->height &= (~1);
907 /*
908 * recalculate bytesperline and sizeimage since width
909 * and height might have changed
910 */
911 pixfmt->bytesperline = (((pixfmt->width * vpfe_pix_fmt->bpp) + 31)
912 & ~31);
913 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
914 pixfmt->sizeimage =
915 pixfmt->bytesperline * pixfmt->height +
916 ((pixfmt->bytesperline * pixfmt->height) >> 1);
917 else
918 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
919
ded026e0 920 v4l2_info(&vpfe_dev->v4l2_dev, "adjusted width = %d, height = %d, bpp = %d, bytesperline = %d, sizeimage = %d\n",
7da8a6cb
MK		 921 pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp,
922 pixfmt->bytesperline, pixfmt->sizeimage);
923 return vpfe_pix_fmt;
924}
925
926static int vpfe_querycap(struct file *file, void *priv,
927 struct v4l2_capability *cap)
928{
929 struct vpfe_device *vpfe_dev = video_drvdata(file);
930
931 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querycap\n");
932
8c17e5e3
HV		 933 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
934 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
7da8a6cb
MK		 935 strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver));
936 strlcpy(cap->bus_info, "VPFE", sizeof(cap->bus_info));
937 strlcpy(cap->card, vpfe_dev->cfg->card_name, sizeof(cap->card));
938 return 0;
939}
940
941static int vpfe_g_fmt_vid_cap(struct file *file, void *priv,
942 struct v4l2_format *fmt)
943{
944 struct vpfe_device *vpfe_dev = video_drvdata(file);
7da8a6cb
MK		 945
946 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_fmt_vid_cap\n");
947 /* Fill in the information about format */
948 *fmt = vpfe_dev->fmt;
b80cefb4 949 return 0;
7da8a6cb
MK		 950}
951
952static int vpfe_enum_fmt_vid_cap(struct file *file, void *priv,
953 struct v4l2_fmtdesc *fmt)
954{
955 struct vpfe_device *vpfe_dev = video_drvdata(file);
956 const struct vpfe_pixel_format *pix_fmt;
957 int temp_index;
958 u32 pix;
959
960 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_fmt_vid_cap\n");
961
962 if (ccdc_dev->hw_ops.enum_pix(&pix, fmt->index) < 0)
963 return -EINVAL;
964
965 /* Fill in the information about format */
966 pix_fmt = vpfe_lookup_pix_format(pix);
967 if (NULL != pix_fmt) {
968 temp_index = fmt->index;
969 *fmt = pix_fmt->fmtdesc;
970 fmt->index = temp_index;
971 return 0;
972 }
973 return -EINVAL;
974}
975
976static int vpfe_s_fmt_vid_cap(struct file *file, void *priv,
977 struct v4l2_format *fmt)
978{
979 struct vpfe_device *vpfe_dev = video_drvdata(file);
980 const struct vpfe_pixel_format *pix_fmts;
981 int ret = 0;
982
983 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_fmt_vid_cap\n");
984
985 /* If streaming is started, return error */
986 if (vpfe_dev->started) {
987 v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is started\n");
988 return -EBUSY;
989 }
990
991 /* Check for valid frame format */
992 pix_fmts = vpfe_check_format(vpfe_dev, &fmt->fmt.pix);
993
994 if (NULL == pix_fmts)
995 return -EINVAL;
996
997 /* store the pixel format in the device object */
998 ret = mutex_lock_interruptible(&vpfe_dev->lock);
999 if (ret)
1000 return ret;
1001
1002 /* First detach any IRQ if currently attached */
1003 vpfe_detach_irq(vpfe_dev);
1004 vpfe_dev->fmt = *fmt;
1005 /* set image capture parameters in the ccdc */
1006 ret = vpfe_config_ccdc_image_format(vpfe_dev);
1007 mutex_unlock(&vpfe_dev->lock);
1008 return ret;
1009}
1010
1011static int vpfe_try_fmt_vid_cap(struct file *file, void *priv,
1012 struct v4l2_format *f)
1013{
1014 struct vpfe_device *vpfe_dev = video_drvdata(file);
1015 const struct vpfe_pixel_format *pix_fmts;
1016
1017 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_try_fmt_vid_cap\n");
1018
1019 pix_fmts = vpfe_check_format(vpfe_dev, &f->fmt.pix);
1020 if (NULL == pix_fmts)
1021 return -EINVAL;
1022 return 0;
1023}
1024
1025/*
1026 * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
1027 * given app input index
1028 */
1029static int vpfe_get_subdev_input_index(struct vpfe_device *vpfe_dev,
1030 int *subdev_index,
1031 int *subdev_input_index,
1032 int app_input_index)
1033{
1034 struct vpfe_config *cfg = vpfe_dev->cfg;
1035 struct vpfe_subdev_info *sdinfo;
1036 int i, j = 0;
1037
1038 for (i = 0; i < cfg->num_subdevs; i++) {
1039 sdinfo = &cfg->sub_devs[i];
1040 if (app_input_index < (j + sdinfo->num_inputs)) {
1041 *subdev_index = i;
1042 *subdev_input_index = app_input_index - j;
1043 return 0;
1044 }
1045 j += sdinfo->num_inputs;
1046 }
1047 return -EINVAL;
1048}
1049
1050/*
1051 * vpfe_get_app_input - Get app input index for a given subdev input index
1052 * driver stores the input index of the current sub device and translate it
1053 * when application request the current input
1054 */
1055static int vpfe_get_app_input_index(struct vpfe_device *vpfe_dev,
1056 int *app_input_index)
1057{
1058 struct vpfe_config *cfg = vpfe_dev->cfg;
1059 struct vpfe_subdev_info *sdinfo;
1060 int i, j = 0;
1061
1062 for (i = 0; i < cfg->num_subdevs; i++) {
1063 sdinfo = &cfg->sub_devs[i];
1064 if (!strcmp(sdinfo->name, vpfe_dev->current_subdev->name)) {
1065 if (vpfe_dev->current_input >= sdinfo->num_inputs)
1066 return -1;
1067 *app_input_index = j + vpfe_dev->current_input;
1068 return 0;
1069 }
1070 j += sdinfo->num_inputs;
1071 }
1072 return -EINVAL;
1073}
1074
1075static int vpfe_enum_input(struct file *file, void *priv,
1076 struct v4l2_input *inp)
1077{
1078 struct vpfe_device *vpfe_dev = video_drvdata(file);
1079 struct vpfe_subdev_info *sdinfo;
1080 int subdev, index ;
1081
1082 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_input\n");
1083
1084 if (vpfe_get_subdev_input_index(vpfe_dev,
1085 &subdev,
1086 &index,
1087 inp->index) < 0) {
ded026e0 1088 v4l2_err(&vpfe_dev->v4l2_dev, "input information not found for the subdev\n");
7da8a6cb
MK		 1089 return -EINVAL;
1090 }
1091 sdinfo = &vpfe_dev->cfg->sub_devs[subdev];
1092 memcpy(inp, &sdinfo->inputs[index], sizeof(struct v4l2_input));
1093 return 0;
1094}
1095
1096static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
1097{
1098 struct vpfe_device *vpfe_dev = video_drvdata(file);
1099
1100 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_input\n");
1101
1102 return vpfe_get_app_input_index(vpfe_dev, index);
1103}
1104
1105
1106static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
1107{
1108 struct vpfe_device *vpfe_dev = video_drvdata(file);
6f55dbae 1109 struct v4l2_subdev *sd;
7da8a6cb
MK		 1110 struct vpfe_subdev_info *sdinfo;
1111 int subdev_index, inp_index;
1112 struct vpfe_route *route;
1113 u32 input = 0, output = 0;
1114 int ret = -EINVAL;
1115
1116 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_input\n");
1117
1118 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1119 if (ret)
1120 return ret;
1121
1122 /*
1123 * If streaming is started return device busy
1124 * error
1125 */
1126 if (vpfe_dev->started) {
1127 v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is on\n");
1128 ret = -EBUSY;
1129 goto unlock_out;
1130 }
9a888ba2
PST		 1131 ret = vpfe_get_subdev_input_index(vpfe_dev,
1132 &subdev_index,
1133 &inp_index,
1134 index);
1135 if (ret < 0) {
7da8a6cb
MK		 1136 v4l2_err(&vpfe_dev->v4l2_dev, "invalid input index\n");
1137 goto unlock_out;
1138 }
1139
1140 sdinfo = &vpfe_dev->cfg->sub_devs[subdev_index];
6f55dbae 1141 sd = vpfe_dev->sd[subdev_index];
7da8a6cb
MK		 1142 route = &sdinfo->routes[inp_index];
1143 if (route && sdinfo->can_route) {
1144 input = route->input;
1145 output = route->output;
1146 }
1147
6f55dbae
HV		 1148 if (sd)
1149 ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0);
7da8a6cb
MK		 1150
1151 if (ret) {
1152 v4l2_err(&vpfe_dev->v4l2_dev,
1153 "vpfe_doioctl:error in setting input in decoder\n");
1154 ret = -EINVAL;
1155 goto unlock_out;
1156 }
1157 vpfe_dev->current_subdev = sdinfo;
6f55dbae
HV		 1158 if (sd)
1159 vpfe_dev->v4l2_dev.ctrl_handler = sd->ctrl_handler;
7da8a6cb
MK		 1160 vpfe_dev->current_input = index;
1161 vpfe_dev->std_index = 0;
1162
1163 /* set the bus/interface parameter for the sub device in ccdc */
1164 ret = ccdc_dev->hw_ops.set_hw_if_params(&sdinfo->ccdc_if_params);
1165 if (ret)
1166 goto unlock_out;
1167
1168 /* set the default image parameters in the device */
1169 ret = vpfe_config_image_format(vpfe_dev,
314527ac 1170 vpfe_standards[vpfe_dev->std_index].std_id);
7da8a6cb
MK		 1171unlock_out:
1172 mutex_unlock(&vpfe_dev->lock);
1173 return ret;
1174}
1175
1176static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
1177{
1178 struct vpfe_device *vpfe_dev = video_drvdata(file);
1179 struct vpfe_subdev_info *sdinfo;
1180 int ret = 0;
1181
1182 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querystd\n");
1183
1184 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1185 sdinfo = vpfe_dev->current_subdev;
1186 if (ret)
1187 return ret;
1188 /* Call querystd function of decoder device */
1189 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1190 video, querystd, std_id);
1191 mutex_unlock(&vpfe_dev->lock);
1192 return ret;
1193}
1194
314527ac 1195static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id)
7da8a6cb
MK		 1196{
1197 struct vpfe_device *vpfe_dev = video_drvdata(file);
1198 struct vpfe_subdev_info *sdinfo;
1199 int ret = 0;
1200
1201 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_std\n");
1202
1203 /* Call decoder driver function to set the standard */
1204 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1205 if (ret)
1206 return ret;
1207
1208 sdinfo = vpfe_dev->current_subdev;
1209 /* If streaming is started, return device busy error */
1210 if (vpfe_dev->started) {
1211 v4l2_err(&vpfe_dev->v4l2_dev, "streaming is started\n");
1212 ret = -EBUSY;
1213 goto unlock_out;
1214 }
1215
1216 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
8774bed9 1217 video, s_std, std_id);
7da8a6cb
MK		 1218 if (ret < 0) {
1219 v4l2_err(&vpfe_dev->v4l2_dev, "Failed to set standard\n");
1220 goto unlock_out;
1221 }
1222 ret = vpfe_config_image_format(vpfe_dev, std_id);
1223
1224unlock_out:
1225 mutex_unlock(&vpfe_dev->lock);
1226 return ret;
1227}
1228
1229static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
1230{
1231 struct vpfe_device *vpfe_dev = video_drvdata(file);
1232
1233 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_std\n");
1234
1235 *std_id = vpfe_standards[vpfe_dev->std_index].std_id;
1236 return 0;
1237}
1238/*
1239 * Videobuf operations
1240 */
1241static int vpfe_videobuf_setup(struct videobuf_queue *vq,
1242 unsigned int *count,
1243 unsigned int *size)
1244{
1245 struct vpfe_fh *fh = vq->priv_data;
1246 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1247
1248 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_setup\n");
844cc0dc
VH		 1249 *size = vpfe_dev->fmt.fmt.pix.sizeimage;
1250 if (vpfe_dev->memory == V4L2_MEMORY_MMAP &&
1251 vpfe_dev->fmt.fmt.pix.sizeimage > config_params.device_bufsize)
1252 *size = config_params.device_bufsize;
7da8a6cb
MK		 1253
1254 if (*count < config_params.min_numbuffers)
1255 *count = config_params.min_numbuffers;
1256 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1257 "count=%d, size=%d\n", *count, *size);
1258 return 0;
1259}
1260
1261static int vpfe_videobuf_prepare(struct videobuf_queue *vq,
1262 struct videobuf_buffer *vb,
1263 enum v4l2_field field)
1264{
1265 struct vpfe_fh *fh = vq->priv_data;
1266 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
844cc0dc
VH		 1267 unsigned long addr;
1268 int ret;
7da8a6cb
MK		 1269
1270 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n");
1271
1272 /* If buffer is not initialized, initialize it */
1273 if (VIDEOBUF_NEEDS_INIT == vb->state) {
1274 vb->width = vpfe_dev->fmt.fmt.pix.width;
1275 vb->height = vpfe_dev->fmt.fmt.pix.height;
1276 vb->size = vpfe_dev->fmt.fmt.pix.sizeimage;
1277 vb->field = field;
844cc0dc 1278
b1dc614a 1279 ret = videobuf_iolock(vq, vb, NULL);
844cc0dc
VH		 1280 if (ret < 0)
1281 return ret;
1282
1283 addr = videobuf_to_dma_contig(vb);
1284 /* Make sure user addresses are aligned to 32 bytes */
1285 if (!ALIGN(addr, 32))
1286 return -EINVAL;
1287
1288 vb->state = VIDEOBUF_PREPARED;
7da8a6cb 1289 }
7da8a6cb
MK		 1290 return 0;
1291}
1292
1293static void vpfe_videobuf_queue(struct videobuf_queue *vq,
1294 struct videobuf_buffer *vb)
1295{
1296 /* Get the file handle object and device object */
1297 struct vpfe_fh *fh = vq->priv_data;
1298 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1299 unsigned long flags;
1300
1301 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_queue\n");
1302
1303 /* add the buffer to the DMA queue */
1304 spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
1305 list_add_tail(&vb->queue, &vpfe_dev->dma_queue);
1306 spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
1307
1308 /* Change state of the buffer */
1309 vb->state = VIDEOBUF_QUEUED;
1310}
1311
1312static void vpfe_videobuf_release(struct videobuf_queue *vq,
1313 struct videobuf_buffer *vb)
1314{
1315 struct vpfe_fh *fh = vq->priv_data;
1316 struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1317 unsigned long flags;
1318
1319 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_videobuf_release\n");
1320
1321 /*
1322 * We need to flush the buffer from the dma queue since
1323 * they are de-allocated
1324 */
1325 spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
1326 INIT_LIST_HEAD(&vpfe_dev->dma_queue);
1327 spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
1328 videobuf_dma_contig_free(vq, vb);
1329 vb->state = VIDEOBUF_NEEDS_INIT;
1330}
1331
1332static struct videobuf_queue_ops vpfe_videobuf_qops = {
1333 .buf_setup = vpfe_videobuf_setup,
1334 .buf_prepare = vpfe_videobuf_prepare,
1335 .buf_queue = vpfe_videobuf_queue,
1336 .buf_release = vpfe_videobuf_release,
1337};
1338
1339/*
1340 * vpfe_reqbufs. currently support REQBUF only once opening
1341 * the device.
1342 */
1343static int vpfe_reqbufs(struct file *file, void *priv,
1344 struct v4l2_requestbuffers *req_buf)
1345{
1346 struct vpfe_device *vpfe_dev = video_drvdata(file);
1347 struct vpfe_fh *fh = file->private_data;
1348 int ret = 0;
1349
1350 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs\n");
1351
1352 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != req_buf->type) {
1353 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buffer type\n");
1354 return -EINVAL;
1355 }
1356
7da8a6cb
MK		 1357 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1358 if (ret)
1359 return ret;
1360
1361 if (vpfe_dev->io_usrs != 0) {
1362 v4l2_err(&vpfe_dev->v4l2_dev, "Only one IO user allowed\n");
1363 ret = -EBUSY;
1364 goto unlock_out;
1365 }
1366
1367 vpfe_dev->memory = req_buf->memory;
1368 videobuf_queue_dma_contig_init(&vpfe_dev->buffer_queue,
1369 &vpfe_videobuf_qops,
204e6ea9 1370 vpfe_dev->pdev,
7da8a6cb
MK		 1371 &vpfe_dev->irqlock,
1372 req_buf->type,
1373 vpfe_dev->fmt.fmt.pix.field,
1374 sizeof(struct videobuf_buffer),
e3cfd447 1375 fh, NULL);
7da8a6cb
MK		 1376
1377 fh->io_allowed = 1;
1378 vpfe_dev->io_usrs = 1;
1379 INIT_LIST_HEAD(&vpfe_dev->dma_queue);
1380 ret = videobuf_reqbufs(&vpfe_dev->buffer_queue, req_buf);
1381unlock_out:
1382 mutex_unlock(&vpfe_dev->lock);
1383 return ret;
1384}
1385
1386static int vpfe_querybuf(struct file *file, void *priv,
1387 struct v4l2_buffer *buf)
1388{
1389 struct vpfe_device *vpfe_dev = video_drvdata(file);
1390
1391 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querybuf\n");
1392
1393 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
1394 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1395 return -EINVAL;
1396 }
1397
1398 if (vpfe_dev->memory != V4L2_MEMORY_MMAP) {
1399 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid memory\n");
1400 return -EINVAL;
1401 }
1402 /* Call videobuf_querybuf to get information */
1403 return videobuf_querybuf(&vpfe_dev->buffer_queue, buf);
1404}
1405
1406static int vpfe_qbuf(struct file *file, void *priv,
1407 struct v4l2_buffer *p)
1408{
1409 struct vpfe_device *vpfe_dev = video_drvdata(file);
1410 struct vpfe_fh *fh = file->private_data;
1411
1412 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_qbuf\n");
1413
1414 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != p->type) {
1415 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1416 return -EINVAL;
1417 }
1418
1419 /*
1420 * If this file handle is not allowed to do IO,
1421 * return error
1422 */
1423 if (!fh->io_allowed) {
1424 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1425 return -EACCES;
1426 }
1427 return videobuf_qbuf(&vpfe_dev->buffer_queue, p);
1428}
1429
1430static int vpfe_dqbuf(struct file *file, void *priv,
1431 struct v4l2_buffer *buf)
1432{
1433 struct vpfe_device *vpfe_dev = video_drvdata(file);
1434
1435 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_dqbuf\n");
1436
1437 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
1438 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1439 return -EINVAL;
1440 }
1441 return videobuf_dqbuf(&vpfe_dev->buffer_queue,
1442 buf, file->f_flags & O_NONBLOCK);
1443}
1444
1445/*
1446 * vpfe_calculate_offsets : This function calculates buffers offset
1447 * for top and bottom field
1448 */
1449static void vpfe_calculate_offsets(struct vpfe_device *vpfe_dev)
1450{
1451 struct v4l2_rect image_win;
1452
1453 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_calculate_offsets\n");
1454
1455 ccdc_dev->hw_ops.get_image_window(&image_win);
1456 vpfe_dev->field_off = image_win.height * image_win.width;
1457}
1458
1459/* vpfe_start_ccdc_capture: start streaming in ccdc/isif */
1460static void vpfe_start_ccdc_capture(struct vpfe_device *vpfe_dev)
1461{
1462 ccdc_dev->hw_ops.enable(1);
1463 if (ccdc_dev->hw_ops.enable_out_to_sdram)
1464 ccdc_dev->hw_ops.enable_out_to_sdram(1);
1465 vpfe_dev->started = 1;
1466}
1467
1468/*
1469 * vpfe_streamon. Assume the DMA queue is not empty.
1470 * application is expected to call QBUF before calling
1471 * this ioctl. If not, driver returns error
1472 */
1473static int vpfe_streamon(struct file *file, void *priv,
1474 enum v4l2_buf_type buf_type)
1475{
1476 struct vpfe_device *vpfe_dev = video_drvdata(file);
1477 struct vpfe_fh *fh = file->private_data;
1478 struct vpfe_subdev_info *sdinfo;
1479 unsigned long addr;
1480 int ret = 0;
1481
1482 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamon\n");
1483
1484 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
1485 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1486 return -EINVAL;
1487 }
1488
1489 /* If file handle is not allowed IO, return error */
1490 if (!fh->io_allowed) {
1491 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1492 return -EACCES;
1493 }
1494
1495 sdinfo = vpfe_dev->current_subdev;
1496 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1497 video, s_stream, 1);
1498
1499 if (ret && (ret != -ENOIOCTLCMD)) {
1500 v4l2_err(&vpfe_dev->v4l2_dev, "stream on failed in subdev\n");
1501 return -EINVAL;
1502 }
1503
1504 /* If buffer queue is empty, return error */
1505 if (list_empty(&vpfe_dev->buffer_queue.stream)) {
1506 v4l2_err(&vpfe_dev->v4l2_dev, "buffer queue is empty\n");
1507 return -EIO;
1508 }
1509
1510 /* Call videobuf_streamon to start streaming * in videobuf */
1511 ret = videobuf_streamon(&vpfe_dev->buffer_queue);
1512 if (ret)
1513 return ret;
1514
1515
1516 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1517 if (ret)
1518 goto streamoff;
1519 /* Get the next frame from the buffer queue */
1520 vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
1521 struct videobuf_buffer, queue);
1522 vpfe_dev->cur_frm = vpfe_dev->next_frm;
1523 /* Remove buffer from the buffer queue */
1524 list_del(&vpfe_dev->cur_frm->queue);
1525 /* Mark state of the current frame to active */
1526 vpfe_dev->cur_frm->state = VIDEOBUF_ACTIVE;
1527 /* Initialize field_id and started member */
1528 vpfe_dev->field_id = 0;
1529 addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
1530
1531 /* Calculate field offset */
1532 vpfe_calculate_offsets(vpfe_dev);
1533
1534 if (vpfe_attach_irq(vpfe_dev) < 0) {
1535 v4l2_err(&vpfe_dev->v4l2_dev,
1536 "Error in attaching interrupt handle\n");
1537 ret = -EFAULT;
1538 goto unlock_out;
1539 }
1540 if (ccdc_dev->hw_ops.configure() < 0) {
1541 v4l2_err(&vpfe_dev->v4l2_dev,
1542 "Error in configuring ccdc\n");
1543 ret = -EINVAL;
1544 goto unlock_out;
1545 }
1546 ccdc_dev->hw_ops.setfbaddr((unsigned long)(addr));
1547 vpfe_start_ccdc_capture(vpfe_dev);
1548 mutex_unlock(&vpfe_dev->lock);
1549 return ret;
1550unlock_out:
1551 mutex_unlock(&vpfe_dev->lock);
1552streamoff:
1553 ret = videobuf_streamoff(&vpfe_dev->buffer_queue);
1554 return ret;
1555}
1556
1557static int vpfe_streamoff(struct file *file, void *priv,
1558 enum v4l2_buf_type buf_type)
1559{
1560 struct vpfe_device *vpfe_dev = video_drvdata(file);
1561 struct vpfe_fh *fh = file->private_data;
1562 struct vpfe_subdev_info *sdinfo;
1563 int ret = 0;
1564
1565 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamoff\n");
1566
1567 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
1568 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1569 return -EINVAL;
1570 }
1571
1572 /* If io is allowed for this file handle, return error */
1573 if (!fh->io_allowed) {
1574 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1575 return -EACCES;
1576 }
1577
1578 /* If streaming is not started, return error */
1579 if (!vpfe_dev->started) {
1580 v4l2_err(&vpfe_dev->v4l2_dev, "device started\n");
1581 return -EINVAL;
1582 }
1583
1584 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1585 if (ret)
1586 return ret;
1587
1588 vpfe_stop_ccdc_capture(vpfe_dev);
1589 vpfe_detach_irq(vpfe_dev);
1590
1591 sdinfo = vpfe_dev->current_subdev;
1592 ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1593 video, s_stream, 0);
1594
1595 if (ret && (ret != -ENOIOCTLCMD))
1596 v4l2_err(&vpfe_dev->v4l2_dev, "stream off failed in subdev\n");
1597 ret = videobuf_streamoff(&vpfe_dev->buffer_queue);
1598 mutex_unlock(&vpfe_dev->lock);
1599 return ret;
1600}
1601
1602static int vpfe_cropcap(struct file *file, void *priv,
1603 struct v4l2_cropcap *crop)
1604{
1605 struct vpfe_device *vpfe_dev = video_drvdata(file);
1606
1607 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_cropcap\n");
1608
ffc2a6bb 1609 if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
7da8a6cb 1610 return -EINVAL;
ffc2a6bb
HV		 1611 /* If std_index is invalid, then just return (== 1:1 aspect) */
1612 if (vpfe_dev->std_index >= ARRAY_SIZE(vpfe_standards))
1613 return 0;
7da8a6cb 1614
7da8a6cb
MK		 1615 crop->pixelaspect = vpfe_standards[vpfe_dev->std_index].pixelaspect;
1616 return 0;
1617}
1618
ffc2a6bb
HV		 1619static int vpfe_g_selection(struct file *file, void *priv,
1620 struct v4l2_selection *sel)
7da8a6cb
MK		 1621{
1622 struct vpfe_device *vpfe_dev = video_drvdata(file);
1623
ffc2a6bb 1624 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_selection\n");
7da8a6cb 1625
ffc2a6bb
HV		 1626 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1627 return -EINVAL;
1628
1629 switch (sel->target) {
1630 case V4L2_SEL_TGT_CROP:
1631 sel->r = vpfe_dev->crop;
1632 break;
1633 case V4L2_SEL_TGT_CROP_DEFAULT:
1634 case V4L2_SEL_TGT_CROP_BOUNDS:
1635 sel->r.width = vpfe_standards[vpfe_dev->std_index].width;
1636 sel->r.height = vpfe_standards[vpfe_dev->std_index].height;
1637 break;
1638 default:
1639 return -EINVAL;
1640 }
7da8a6cb
MK		 1641 return 0;
1642}
1643
ffc2a6bb
HV		 1644static int vpfe_s_selection(struct file *file, void *priv,
1645 struct v4l2_selection *sel)
7da8a6cb
MK		 1646{
1647 struct vpfe_device *vpfe_dev = video_drvdata(file);
ffc2a6bb 1648 struct v4l2_rect rect = sel->r;
7da8a6cb
MK		 1649 int ret = 0;
1650
ffc2a6bb
HV		 1651 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_selection\n");
1652
1653 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1654 sel->target != V4L2_SEL_TGT_CROP)
1655 return -EINVAL;
7da8a6cb
MK		 1656
1657 if (vpfe_dev->started) {
1658 /* make sure streaming is not started */
1659 v4l2_err(&vpfe_dev->v4l2_dev,
1660 "Cannot change crop when streaming is ON\n");
1661 return -EBUSY;
1662 }
1663
1664 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1665 if (ret)
1666 return ret;
1667
8b6faacd 1668 if (rect.top < 0 || rect.left < 0) {
7da8a6cb
MK		 1669 v4l2_err(&vpfe_dev->v4l2_dev,
1670 "doesn't support negative values for top & left\n");
1671 ret = -EINVAL;
1672 goto unlock_out;
1673 }
1674
25985edc 1675 /* adjust the width to 16 pixel boundary */
8b6faacd 1676 rect.width = ((rect.width + 15) & ~0xf);
7da8a6cb
MK		 1677
1678 /* make sure parameters are valid */
8b6faacd 1679 if ((rect.left + rect.width >
7da8a6cb 1680 vpfe_dev->std_info.active_pixels) ||
8b6faacd 1681 (rect.top + rect.height >
7da8a6cb 1682 vpfe_dev->std_info.active_lines)) {
ffc2a6bb 1683 v4l2_err(&vpfe_dev->v4l2_dev, "Error in S_SELECTION params\n");
7da8a6cb
MK		 1684 ret = -EINVAL;
1685 goto unlock_out;
1686 }
8b6faacd
LP		 1687 ccdc_dev->hw_ops.set_image_window(&rect);
1688 vpfe_dev->fmt.fmt.pix.width = rect.width;
1689 vpfe_dev->fmt.fmt.pix.height = rect.height;
7da8a6cb
MK		 1690 vpfe_dev->fmt.fmt.pix.bytesperline =
1691 ccdc_dev->hw_ops.get_line_length();
1692 vpfe_dev->fmt.fmt.pix.sizeimage =
1693 vpfe_dev->fmt.fmt.pix.bytesperline *
1694 vpfe_dev->fmt.fmt.pix.height;
8b6faacd 1695 vpfe_dev->crop = rect;
ffc2a6bb 1696 sel->r = rect;
7da8a6cb
MK		 1697unlock_out:
1698 mutex_unlock(&vpfe_dev->lock);
1699 return ret;
1700}
1701
1702
1703static long vpfe_param_handler(struct file *file, void *priv,
6d43be77 1704 bool valid_prio, unsigned int cmd, void *param)
7da8a6cb
MK		 1705{
1706 struct vpfe_device *vpfe_dev = video_drvdata(file);
1707 int ret = 0;
1708
6a4f0623 1709 v4l2_dbg(2, debug, &vpfe_dev->v4l2_dev, "vpfe_param_handler\n");
7da8a6cb
MK		 1710
1711 if (vpfe_dev->started) {
1712 /* only allowed if streaming is not started */
6a4f0623
MK		 1713 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1714 "device already started\n");
7da8a6cb
MK		 1715 return -EBUSY;
1716 }
1717
1718 ret = mutex_lock_interruptible(&vpfe_dev->lock);
1719 if (ret)
1720 return ret;
1721
1722 switch (cmd) {
1723 case VPFE_CMD_S_CCDC_RAW_PARAMS:
1724 v4l2_warn(&vpfe_dev->v4l2_dev,
1725 "VPFE_CMD_S_CCDC_RAW_PARAMS: experimental ioctl\n");
6a4f0623
MK		 1726 if (ccdc_dev->hw_ops.set_params) {
1727 ret = ccdc_dev->hw_ops.set_params(param);
1728 if (ret) {
1729 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1730 "Error setting parameters in CCDC\n");
1731 goto unlock_out;
1732 }
9a888ba2
PST		 1733 ret = vpfe_get_ccdc_image_format(vpfe_dev,
1734 &vpfe_dev->fmt);
1735 if (ret < 0) {
6a4f0623
MK		 1736 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1737 "Invalid image format at CCDC\n");
1738 goto unlock_out;
1739 }
1740 } else {
1741 ret = -EINVAL;
1742 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1743 "VPFE_CMD_S_CCDC_RAW_PARAMS not supported\n");
7da8a6cb
MK		 1744 }
1745 break;
1746 default:
d1c754a9 1747 ret = -ENOTTY;
7da8a6cb
MK		 1748 }
1749unlock_out:
1750 mutex_unlock(&vpfe_dev->lock);
1751 return ret;
1752}
1753
1754
1755/* vpfe capture ioctl operations */
1756static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
1757 .vidioc_querycap = vpfe_querycap,
1758 .vidioc_g_fmt_vid_cap = vpfe_g_fmt_vid_cap,
1759 .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt_vid_cap,
1760 .vidioc_s_fmt_vid_cap = vpfe_s_fmt_vid_cap,
1761 .vidioc_try_fmt_vid_cap = vpfe_try_fmt_vid_cap,
1762 .vidioc_enum_input = vpfe_enum_input,
1763 .vidioc_g_input = vpfe_g_input,
1764 .vidioc_s_input = vpfe_s_input,
1765 .vidioc_querystd = vpfe_querystd,
1766 .vidioc_s_std = vpfe_s_std,
1767 .vidioc_g_std = vpfe_g_std,
1768 .vidioc_reqbufs = vpfe_reqbufs,
1769 .vidioc_querybuf = vpfe_querybuf,
1770 .vidioc_qbuf = vpfe_qbuf,
1771 .vidioc_dqbuf = vpfe_dqbuf,
1772 .vidioc_streamon = vpfe_streamon,
1773 .vidioc_streamoff = vpfe_streamoff,
1774 .vidioc_cropcap = vpfe_cropcap,
ffc2a6bb
HV		 1775 .vidioc_g_selection = vpfe_g_selection,
1776 .vidioc_s_selection = vpfe_s_selection,
7da8a6cb
MK		 1777 .vidioc_default = vpfe_param_handler,
1778};
1779
1780static struct vpfe_device *vpfe_initialize(void)
1781{
1782 struct vpfe_device *vpfe_dev;
1783
1784 /* Default number of buffers should be 3 */
1785 if ((numbuffers > 0) &&
1786 (numbuffers < config_params.min_numbuffers))
1787 numbuffers = config_params.min_numbuffers;
1788
1789 /*
1790 * Set buffer size to min buffers size if invalid buffer size is
1791 * given
1792 */
1793 if (bufsize < config_params.min_bufsize)
1794 bufsize = config_params.min_bufsize;
1795
1796 config_params.numbuffers = numbuffers;
1797
1798 if (numbuffers)
1799 config_params.device_bufsize = bufsize;
1800
1801 /* Allocate memory for device objects */
1802 vpfe_dev = kzalloc(sizeof(*vpfe_dev), GFP_KERNEL);
1803
1804 return vpfe_dev;
1805}
1806
7da8a6cb
MK		 1807/*
1808 * vpfe_probe : This function creates device entries by register
1809 * itself to the V4L2 driver and initializes fields of each
1810 * device objects
1811 */
4c62e976 1812static int vpfe_probe(struct platform_device *pdev)
7da8a6cb
MK		 1813{
1814 struct vpfe_subdev_info *sdinfo;
1815 struct vpfe_config *vpfe_cfg;
1816 struct resource *res1;
1817 struct vpfe_device *vpfe_dev;
1818 struct i2c_adapter *i2c_adap;
1819 struct video_device *vfd;
1820 int ret = -ENOMEM, i, j;
1821 int num_subdevs = 0;
1822
1823 /* Get the pointer to the device object */
1824 vpfe_dev = vpfe_initialize();
1825
1826 if (!vpfe_dev) {
1827 v4l2_err(pdev->dev.driver,
1828 "Failed to allocate memory for vpfe_dev\n");
1829 return ret;
1830 }
1831
1832 vpfe_dev->pdev = &pdev->dev;
1833
1834 if (NULL == pdev->dev.platform_data) {
1835 v4l2_err(pdev->dev.driver, "Unable to get vpfe config\n");
51444ea3 1836 ret = -ENODEV;
7da8a6cb
MK		 1837 goto probe_free_dev_mem;
1838 }
1839
1840 vpfe_cfg = pdev->dev.platform_data;
1841 vpfe_dev->cfg = vpfe_cfg;
1842 if (NULL == vpfe_cfg->ccdc ||
1843 NULL == vpfe_cfg->card_name ||
1844 NULL == vpfe_cfg->sub_devs) {
1845 v4l2_err(pdev->dev.driver, "null ptr in vpfe_cfg\n");
1846 ret = -ENOENT;
1847 goto probe_free_dev_mem;
1848 }
1849
7da8a6cb 1850 /* Allocate memory for ccdc configuration */
e4c0cd0a 1851 ccdc_cfg = kmalloc(sizeof(*ccdc_cfg), GFP_KERNEL);
11691f0e 1852 if (!ccdc_cfg)
39e219d9 1853 goto probe_free_dev_mem;
7da8a6cb 1854
2b080c5d
DC		 1855 mutex_lock(&ccdc_lock);
1856
7da8a6cb
MK		 1857 strncpy(ccdc_cfg->name, vpfe_cfg->ccdc, 32);
1858 /* Get VINT0 irq resource */
1859 res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1860 if (!res1) {
1861 v4l2_err(pdev->dev.driver,
1862 "Unable to get interrupt for VINT0\n");
51444ea3
MK		 1863 ret = -ENODEV;
1864 goto probe_free_ccdc_cfg_mem;
7da8a6cb
MK		 1865 }
1866 vpfe_dev->ccdc_irq0 = res1->start;
1867
1868 /* Get VINT1 irq resource */
51444ea3 1869 res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
7da8a6cb
MK		 1870 if (!res1) {
1871 v4l2_err(pdev->dev.driver,
1872 "Unable to get interrupt for VINT1\n");
51444ea3
MK		 1873 ret = -ENODEV;
1874 goto probe_free_ccdc_cfg_mem;
7da8a6cb
MK		 1875 }
1876 vpfe_dev->ccdc_irq1 = res1->start;
1877
d8c279a0 1878 ret = request_irq(vpfe_dev->ccdc_irq0, vpfe_isr, 0,
7da8a6cb
MK		 1879 "vpfe_capture0", vpfe_dev);
1880
1881 if (0 != ret) {
1882 v4l2_err(pdev->dev.driver, "Unable to request interrupt\n");
51444ea3 1883 goto probe_free_ccdc_cfg_mem;
7da8a6cb
MK		 1884 }
1885
03c278f0 1886 vfd = &vpfe_dev->video_dev;
7da8a6cb 1887 /* Initialize field of video device */
03c278f0 1888 vfd->release = video_device_release_empty;
7da8a6cb
MK		 1889 vfd->fops = &vpfe_fops;
1890 vfd->ioctl_ops = &vpfe_ioctl_ops;
7da8a6cb 1891 vfd->tvnorms = 0;
7da8a6cb
MK		 1892 vfd->v4l2_dev = &vpfe_dev->v4l2_dev;
1893 snprintf(vfd->name, sizeof(vfd->name),
1894 "%s_V%d.%d.%d",
1895 CAPTURE_DRV_NAME,
1896 (VPFE_CAPTURE_VERSION_CODE >> 16) & 0xff,
1897 (VPFE_CAPTURE_VERSION_CODE >> 8) & 0xff,
1898 (VPFE_CAPTURE_VERSION_CODE) & 0xff);
7da8a6cb
MK		 1899
1900 ret = v4l2_device_register(&pdev->dev, &vpfe_dev->v4l2_dev);
1901 if (ret) {
1902 v4l2_err(pdev->dev.driver,
1903 "Unable to register v4l2 device.\n");
03c278f0 1904 goto probe_out_release_irq;
7da8a6cb
MK		 1905 }
1906 v4l2_info(&vpfe_dev->v4l2_dev, "v4l2 device registered\n");
1907 spin_lock_init(&vpfe_dev->irqlock);
1908 spin_lock_init(&vpfe_dev->dma_queue_lock);
1909 mutex_init(&vpfe_dev->lock);
1910
1911 /* Initialize field of the device objects */
1912 vpfe_dev->numbuffers = config_params.numbuffers;
1913
7da8a6cb
MK		 1914 /* register video device */
1915 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1916 "trying to register vpfe device.\n");
1917 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
212bdba3 1918 "video_dev=%p\n", &vpfe_dev->video_dev);
7da8a6cb 1919 vpfe_dev->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
03c278f0 1920 ret = video_register_device(&vpfe_dev->video_dev,
7da8a6cb
MK		 1921 VFL_TYPE_GRABBER, -1);
1922
1923 if (ret) {
1924 v4l2_err(pdev->dev.driver,
1925 "Unable to register video device.\n");
1926 goto probe_out_v4l2_unregister;
1927 }
1928
1929 v4l2_info(&vpfe_dev->v4l2_dev, "video device registered\n");
1930 /* set the driver data in platform device */
1931 platform_set_drvdata(pdev, vpfe_dev);
1932 /* set driver private data */
03c278f0 1933 video_set_drvdata(&vpfe_dev->video_dev, vpfe_dev);
14cbaafe 1934 i2c_adap = i2c_get_adapter(vpfe_cfg->i2c_adapter_id);
7da8a6cb 1935 num_subdevs = vpfe_cfg->num_subdevs;
ed011a23
ME		 1936 vpfe_dev->sd = kmalloc_array(num_subdevs,
1937 sizeof(*vpfe_dev->sd),
1938 GFP_KERNEL);
7da8a6cb 1939 if (NULL == vpfe_dev->sd) {
7da8a6cb
MK		 1940 ret = -ENOMEM;
1941 goto probe_out_video_unregister;
1942 }
1943
1944 for (i = 0; i < num_subdevs; i++) {
1945 struct v4l2_input *inps;
1946
1947 sdinfo = &vpfe_cfg->sub_devs[i];
1948
1949 /* Load up the subdevice */
1950 vpfe_dev->sd[i] =
1951 v4l2_i2c_new_subdev_board(&vpfe_dev->v4l2_dev,
1952 i2c_adap,
7da8a6cb
MK		 1953 &sdinfo->board_info,
1954 NULL);
1955 if (vpfe_dev->sd[i]) {
1956 v4l2_info(&vpfe_dev->v4l2_dev,
1957 "v4l2 sub device %s registered\n",
1958 sdinfo->name);
1959 vpfe_dev->sd[i]->grp_id = sdinfo->grp_id;
1960 /* update tvnorms from the sub devices */
1961 for (j = 0; j < sdinfo->num_inputs; j++) {
1962 inps = &sdinfo->inputs[j];
1963 vfd->tvnorms |= inps->std;
1964 }
1965 } else {
1966 v4l2_info(&vpfe_dev->v4l2_dev,
1967 "v4l2 sub device %s register fails\n",
1968 sdinfo->name);
1969 goto probe_sd_out;
1970 }
1971 }
1972
1973 /* set first sub device as current one */
1974 vpfe_dev->current_subdev = &vpfe_cfg->sub_devs[0];
6f55dbae 1975 vpfe_dev->v4l2_dev.ctrl_handler = vpfe_dev->sd[0]->ctrl_handler;
7da8a6cb
MK		 1976
1977 /* We have at least one sub device to work with */
1978 mutex_unlock(&ccdc_lock);
1979 return 0;
1980
1981probe_sd_out:
1982 kfree(vpfe_dev->sd);
1983probe_out_video_unregister:
03c278f0 1984 video_unregister_device(&vpfe_dev->video_dev);
7da8a6cb
MK		 1985probe_out_v4l2_unregister:
1986 v4l2_device_unregister(&vpfe_dev->v4l2_dev);
7da8a6cb
MK		 1987probe_out_release_irq:
1988 free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
51444ea3 1989probe_free_ccdc_cfg_mem:
7da8a6cb 1990 kfree(ccdc_cfg);
ab51bec1 1991 mutex_unlock(&ccdc_lock);
7da8a6cb
MK		 1992probe_free_dev_mem:
1993 kfree(vpfe_dev);
1994 return ret;
1995}
1996
1997/*
1998 * vpfe_remove : It un-register device from V4L2 driver
1999 */
4c62e976 2000static int vpfe_remove(struct platform_device *pdev)
7da8a6cb
MK		 2001{
2002 struct vpfe_device *vpfe_dev = platform_get_drvdata(pdev);
7da8a6cb
MK		 2003
2004 v4l2_info(pdev->dev.driver, "vpfe_remove\n");
2005
2006 free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
2007 kfree(vpfe_dev->sd);
2008 v4l2_device_unregister(&vpfe_dev->v4l2_dev);
03c278f0 2009 video_unregister_device(&vpfe_dev->video_dev);
7da8a6cb
MK		 2010 kfree(vpfe_dev);
2011 kfree(ccdc_cfg);
2012 return 0;
2013}
2014
aa2dc903 2015static int vpfe_suspend(struct device *dev)
7da8a6cb 2016{
aa2dc903 2017 return 0;
7da8a6cb
MK		 2018}
2019
aa2dc903 2020static int vpfe_resume(struct device *dev)
7da8a6cb 2021{
aa2dc903 2022 return 0;
7da8a6cb
MK		 2023}
2024
47145210 2025static const struct dev_pm_ops vpfe_dev_pm_ops = {
7da8a6cb
MK		 2026 .suspend = vpfe_suspend,
2027 .resume = vpfe_resume,
2028};
2029
a1b3a6ce 2030static struct platform_driver vpfe_driver = {
7da8a6cb
MK		 2031 .driver = {
2032 .name = CAPTURE_DRV_NAME,
7da8a6cb
MK		 2033 .pm = &vpfe_dev_pm_ops,
2034 },
2035 .probe = vpfe_probe,
4c62e976 2036 .remove = vpfe_remove,
7da8a6cb
MK		 2037};
2038
1d6629b1 2039module_platform_driver(vpfe_driver);
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