2 * Copyright (C) 2008-2009 Texas Instruments Inc
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.
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.
14 * Driver name : VPFE Capture driver
15 * VPFE Capture driver allows applications to capture and stream video
16 * frames on DaVinci SoCs (DM6446, DM355 etc) from a YUV source such as
17 * TVP5146 or Raw Bayer RGB image data from an image sensor
18 * such as Microns' MT9T001, MT9T031 etc.
20 * These SoCs have, in common, a Video Processing Subsystem (VPSS) that
21 * consists of a Video Processing Front End (VPFE) for capturing
22 * video/raw image data and Video Processing Back End (VPBE) for displaying
23 * YUV data through an in-built analog encoder or Digital LCD port. This
24 * driver is for capture through VPFE. A typical EVM using these SoCs have
25 * following high level configuration.
28 * decoder(TVP5146/ YUV/
29 * MT9T001) --> Raw Bayer RGB ---> MUX -> VPFE (CCDC/ISIF)
38 * The data flow happens from a decoder connected to the VPFE over a
39 * YUV embedded (BT.656/BT.1120) or separate sync or raw bayer rgb interface
40 * and to the input of VPFE through an optional MUX (if more inputs are
41 * to be interfaced on the EVM). The input data is first passed through
42 * CCDC (CCD Controller, a.k.a Image Sensor Interface, ISIF). The CCDC
43 * does very little or no processing on YUV data and does pre-process Raw
44 * Bayer RGB data through modules such as Defect Pixel Correction (DFC)
45 * Color Space Conversion (CSC), data gain/offset etc. After this, data
46 * can be written to SDRAM or can be connected to the image processing
47 * block such as IPIPE (on DM355 only).
51 * - Capture using TVP5146 over BT.656
52 * - support for interfacing decoders using sub device model
53 * - Work with DM355 or DM6446 CCDC to do Raw Bayer RGB/YUV
54 * data capture to SDRAM.
56 * - Support multiple REQBUF after open
57 * - Support for de-allocating buffers through REQBUF
58 * - Support for Raw Bayer RGB capture
59 * - Support for chaining Image Processor
60 * - Support for static allocation of buffers
61 * - Support for USERPTR IO
62 * - Support for STREAMON before QBUF
63 * - Support for control ioctls
65 #include <linux/module.h>
66 #include <linux/slab.h>
67 #include <linux/init.h>
68 #include <linux/platform_device.h>
69 #include <linux/interrupt.h>
70 #include <media/v4l2-common.h>
72 #include <media/davinci/vpfe_capture.h>
73 #include "ccdc_hw_device.h"
76 static u32 numbuffers
= 3;
77 static u32 bufsize
= (720 * 576 * 2);
79 module_param(numbuffers
, uint
, S_IRUGO
);
80 module_param(bufsize
, uint
, S_IRUGO
);
81 module_param(debug
, int, 0644);
83 MODULE_PARM_DESC(numbuffers
, "buffer count (default:3)");
84 MODULE_PARM_DESC(bufsize
, "buffer size in bytes (default:720 x 576 x 2)");
85 MODULE_PARM_DESC(debug
, "Debug level 0-1");
87 MODULE_DESCRIPTION("VPFE Video for Linux Capture Driver");
88 MODULE_LICENSE("GPL");
89 MODULE_AUTHOR("Texas Instruments");
91 /* standard information */
92 struct vpfe_standard
{
96 struct v4l2_fract pixelaspect
;
97 /* 0 - progressive, 1 - interlaced */
101 /* ccdc configuration */
103 /* This make sure vpfe is probed and ready to go */
105 /* name of ccdc device */
109 /* data structures */
110 static struct vpfe_config_params config_params
= {
113 .min_bufsize
= 720 * 480 * 2,
114 .device_bufsize
= 720 * 576 * 2,
117 /* ccdc device registered */
118 static struct ccdc_hw_device
*ccdc_dev
;
119 /* lock for accessing ccdc information */
120 static DEFINE_MUTEX(ccdc_lock
);
121 /* ccdc configuration */
122 static struct ccdc_config
*ccdc_cfg
;
124 static const struct vpfe_standard vpfe_standards
[] = {
125 {V4L2_STD_525_60
, 720, 480, {11, 10}, 1},
126 {V4L2_STD_625_50
, 720, 576, {54, 59}, 1},
129 /* Used when raw Bayer image from ccdc is directly captured to SDRAM */
130 static const struct vpfe_pixel_format vpfe_pix_fmts
[] = {
134 .type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
,
135 .description
= "Bayer GrRBGb 8bit A-Law compr.",
136 .pixelformat
= V4L2_PIX_FMT_SBGGR8
,
143 .type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
,
144 .description
= "Bayer GrRBGb - 16bit",
145 .pixelformat
= V4L2_PIX_FMT_SBGGR16
,
152 .type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
,
153 .description
= "Bayer GrRBGb 8bit DPCM compr.",
154 .pixelformat
= V4L2_PIX_FMT_SGRBG10DPCM8
,
161 .type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
,
162 .description
= "YCbCr 4:2:2 Interleaved UYVY",
163 .pixelformat
= V4L2_PIX_FMT_UYVY
,
170 .type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
,
171 .description
= "YCbCr 4:2:2 Interleaved YUYV",
172 .pixelformat
= V4L2_PIX_FMT_YUYV
,
179 .type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
,
180 .description
= "Y/CbCr 4:2:0 - Semi planar",
181 .pixelformat
= V4L2_PIX_FMT_NV12
,
188 * vpfe_lookup_pix_format()
189 * lookup an entry in the vpfe pix format table based on pix_format
191 static const struct vpfe_pixel_format
*vpfe_lookup_pix_format(u32 pix_format
)
195 for (i
= 0; i
< ARRAY_SIZE(vpfe_pix_fmts
); i
++) {
196 if (pix_format
== vpfe_pix_fmts
[i
].fmtdesc
.pixelformat
)
197 return &vpfe_pix_fmts
[i
];
203 * vpfe_register_ccdc_device. CCDC module calls this to
204 * register with vpfe capture
206 int vpfe_register_ccdc_device(struct ccdc_hw_device
*dev
)
209 printk(KERN_NOTICE
"vpfe_register_ccdc_device: %s\n", dev
->name
);
211 BUG_ON(!dev
->hw_ops
.open
);
212 BUG_ON(!dev
->hw_ops
.enable
);
213 BUG_ON(!dev
->hw_ops
.set_hw_if_params
);
214 BUG_ON(!dev
->hw_ops
.configure
);
215 BUG_ON(!dev
->hw_ops
.set_buftype
);
216 BUG_ON(!dev
->hw_ops
.get_buftype
);
217 BUG_ON(!dev
->hw_ops
.enum_pix
);
218 BUG_ON(!dev
->hw_ops
.set_frame_format
);
219 BUG_ON(!dev
->hw_ops
.get_frame_format
);
220 BUG_ON(!dev
->hw_ops
.get_pixel_format
);
221 BUG_ON(!dev
->hw_ops
.set_pixel_format
);
222 BUG_ON(!dev
->hw_ops
.set_image_window
);
223 BUG_ON(!dev
->hw_ops
.get_image_window
);
224 BUG_ON(!dev
->hw_ops
.get_line_length
);
225 BUG_ON(!dev
->hw_ops
.getfid
);
227 mutex_lock(&ccdc_lock
);
230 * TODO. Will this ever happen? if so, we need to fix it.
231 * Proabably we need to add the request to a linked list and
232 * walk through it during vpfe probe
234 printk(KERN_ERR
"vpfe capture not initialized\n");
239 if (strcmp(dev
->name
, ccdc_cfg
->name
)) {
240 /* ignore this ccdc */
246 printk(KERN_ERR
"ccdc already registered\n");
253 mutex_unlock(&ccdc_lock
);
256 EXPORT_SYMBOL(vpfe_register_ccdc_device
);
259 * vpfe_unregister_ccdc_device. CCDC module calls this to
260 * unregister with vpfe capture
262 void vpfe_unregister_ccdc_device(struct ccdc_hw_device
*dev
)
265 printk(KERN_ERR
"invalid ccdc device ptr\n");
269 printk(KERN_NOTICE
"vpfe_unregister_ccdc_device, dev->name = %s\n",
272 if (strcmp(dev
->name
, ccdc_cfg
->name
)) {
273 /* ignore this ccdc */
277 mutex_lock(&ccdc_lock
);
279 mutex_unlock(&ccdc_lock
);
281 EXPORT_SYMBOL(vpfe_unregister_ccdc_device
);
284 * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings
286 static int vpfe_get_ccdc_image_format(struct vpfe_device
*vpfe_dev
,
287 struct v4l2_format
*f
)
289 struct v4l2_rect image_win
;
290 enum ccdc_buftype buf_type
;
291 enum ccdc_frmfmt frm_fmt
;
293 memset(f
, 0, sizeof(*f
));
294 f
->type
= V4L2_BUF_TYPE_VIDEO_OUTPUT
;
295 ccdc_dev
->hw_ops
.get_image_window(&image_win
);
296 f
->fmt
.pix
.width
= image_win
.width
;
297 f
->fmt
.pix
.height
= image_win
.height
;
298 f
->fmt
.pix
.bytesperline
= ccdc_dev
->hw_ops
.get_line_length();
299 f
->fmt
.pix
.sizeimage
= f
->fmt
.pix
.bytesperline
*
301 buf_type
= ccdc_dev
->hw_ops
.get_buftype();
302 f
->fmt
.pix
.pixelformat
= ccdc_dev
->hw_ops
.get_pixel_format();
303 frm_fmt
= ccdc_dev
->hw_ops
.get_frame_format();
304 if (frm_fmt
== CCDC_FRMFMT_PROGRESSIVE
)
305 f
->fmt
.pix
.field
= V4L2_FIELD_NONE
;
306 else if (frm_fmt
== CCDC_FRMFMT_INTERLACED
) {
307 if (buf_type
== CCDC_BUFTYPE_FLD_INTERLEAVED
)
308 f
->fmt
.pix
.field
= V4L2_FIELD_INTERLACED
;
309 else if (buf_type
== CCDC_BUFTYPE_FLD_SEPARATED
)
310 f
->fmt
.pix
.field
= V4L2_FIELD_SEQ_TB
;
312 v4l2_err(&vpfe_dev
->v4l2_dev
, "Invalid buf_type\n");
316 v4l2_err(&vpfe_dev
->v4l2_dev
, "Invalid frm_fmt\n");
323 * vpfe_config_ccdc_image_format()
324 * For a pix format, configure ccdc to setup the capture
326 static int vpfe_config_ccdc_image_format(struct vpfe_device
*vpfe_dev
)
328 enum ccdc_frmfmt frm_fmt
= CCDC_FRMFMT_INTERLACED
;
331 if (ccdc_dev
->hw_ops
.set_pixel_format(
332 vpfe_dev
->fmt
.fmt
.pix
.pixelformat
) < 0) {
333 v4l2_err(&vpfe_dev
->v4l2_dev
,
334 "couldn't set pix format in ccdc\n");
337 /* configure the image window */
338 ccdc_dev
->hw_ops
.set_image_window(&vpfe_dev
->crop
);
340 switch (vpfe_dev
->fmt
.fmt
.pix
.field
) {
341 case V4L2_FIELD_INTERLACED
:
342 /* do nothing, since it is default */
343 ret
= ccdc_dev
->hw_ops
.set_buftype(
344 CCDC_BUFTYPE_FLD_INTERLEAVED
);
346 case V4L2_FIELD_NONE
:
347 frm_fmt
= CCDC_FRMFMT_PROGRESSIVE
;
348 /* buffer type only applicable for interlaced scan */
350 case V4L2_FIELD_SEQ_TB
:
351 ret
= ccdc_dev
->hw_ops
.set_buftype(
352 CCDC_BUFTYPE_FLD_SEPARATED
);
358 /* set the frame format */
360 ret
= ccdc_dev
->hw_ops
.set_frame_format(frm_fmt
);
364 * vpfe_config_image_format()
365 * For a given standard, this functions sets up the default
366 * pix format & crop values in the vpfe device and ccdc. It first
367 * starts with defaults based values from the standard table.
368 * It then checks if sub device supports get_fmt and then override the
369 * values based on that.Sets crop values to match with scan resolution
370 * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the
373 static int vpfe_config_image_format(struct vpfe_device
*vpfe_dev
,
376 struct vpfe_subdev_info
*sdinfo
= vpfe_dev
->current_subdev
;
377 struct v4l2_subdev_format fmt
= {
378 .which
= V4L2_SUBDEV_FORMAT_ACTIVE
,
380 struct v4l2_mbus_framefmt
*mbus_fmt
= &fmt
.format
;
381 struct v4l2_pix_format
*pix
= &vpfe_dev
->fmt
.fmt
.pix
;
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
;
397 if (i
== ARRAY_SIZE(vpfe_standards
)) {
398 v4l2_err(&vpfe_dev
->v4l2_dev
, "standard not supported\n");
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 pix
->width
= vpfe_dev
->crop
.width
;
407 pix
->height
= vpfe_dev
->crop
.height
;
409 /* first field and frame format based on standard frame format */
410 if (vpfe_dev
->std_info
.frame_format
) {
411 pix
->field
= V4L2_FIELD_INTERLACED
;
412 /* assume V4L2_PIX_FMT_UYVY as default */
413 pix
->pixelformat
= V4L2_PIX_FMT_UYVY
;
414 v4l2_fill_mbus_format(mbus_fmt
, pix
,
415 MEDIA_BUS_FMT_YUYV10_2X10
);
417 pix
->field
= V4L2_FIELD_NONE
;
418 /* assume V4L2_PIX_FMT_SBGGR8 */
419 pix
->pixelformat
= V4L2_PIX_FMT_SBGGR8
;
420 v4l2_fill_mbus_format(mbus_fmt
, pix
,
421 MEDIA_BUS_FMT_SBGGR8_1X8
);
424 /* if sub device supports get_fmt, override the defaults */
425 ret
= v4l2_device_call_until_err(&vpfe_dev
->v4l2_dev
,
426 sdinfo
->grp_id
, pad
, get_fmt
, NULL
, &fmt
);
428 if (ret
&& ret
!= -ENOIOCTLCMD
) {
429 v4l2_err(&vpfe_dev
->v4l2_dev
,
430 "error in getting get_fmt from sub device\n");
433 v4l2_fill_pix_format(pix
, mbus_fmt
);
434 pix
->bytesperline
= pix
->width
* 2;
435 pix
->sizeimage
= pix
->bytesperline
* pix
->height
;
437 /* Sets the values in CCDC */
438 ret
= vpfe_config_ccdc_image_format(vpfe_dev
);
442 /* Update the values of sizeimage and bytesperline */
443 pix
->bytesperline
= ccdc_dev
->hw_ops
.get_line_length();
444 pix
->sizeimage
= pix
->bytesperline
* pix
->height
;
449 static int vpfe_initialize_device(struct vpfe_device
*vpfe_dev
)
453 /* set first input of current subdevice as the current input */
454 vpfe_dev
->current_input
= 0;
456 /* set default standard */
457 vpfe_dev
->std_index
= 0;
459 /* Configure the default format information */
460 ret
= vpfe_config_image_format(vpfe_dev
,
461 vpfe_standards
[vpfe_dev
->std_index
].std_id
);
465 /* now open the ccdc device to initialize it */
466 mutex_lock(&ccdc_lock
);
468 v4l2_err(&vpfe_dev
->v4l2_dev
, "ccdc device not registered\n");
473 if (!try_module_get(ccdc_dev
->owner
)) {
474 v4l2_err(&vpfe_dev
->v4l2_dev
, "Couldn't lock ccdc module\n");
478 ret
= ccdc_dev
->hw_ops
.open(vpfe_dev
->pdev
);
480 vpfe_dev
->initialized
= 1;
482 /* Clear all VPFE/CCDC interrupts */
483 if (vpfe_dev
->cfg
->clr_intr
)
484 vpfe_dev
->cfg
->clr_intr(-1);
487 mutex_unlock(&ccdc_lock
);
492 * vpfe_open : It creates object of file handle structure and
493 * stores it in private_data member of filepointer
495 static int vpfe_open(struct file
*file
)
497 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
498 struct video_device
*vdev
= video_devdata(file
);
501 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_open\n");
503 if (!vpfe_dev
->cfg
->num_subdevs
) {
504 v4l2_err(&vpfe_dev
->v4l2_dev
, "No decoder registered\n");
508 /* Allocate memory for the file handle object */
509 fh
= kmalloc(sizeof(*fh
), GFP_KERNEL
);
513 /* store pointer to fh in private_data member of file */
514 file
->private_data
= fh
;
515 fh
->vpfe_dev
= vpfe_dev
;
516 v4l2_fh_init(&fh
->fh
, vdev
);
517 mutex_lock(&vpfe_dev
->lock
);
518 /* If decoder is not initialized. initialize it */
519 if (!vpfe_dev
->initialized
) {
520 if (vpfe_initialize_device(vpfe_dev
)) {
521 mutex_unlock(&vpfe_dev
->lock
);
522 v4l2_fh_exit(&fh
->fh
);
527 /* Increment device usrs counter */
529 /* Set io_allowed member to false */
531 v4l2_fh_add(&fh
->fh
);
532 mutex_unlock(&vpfe_dev
->lock
);
536 static void vpfe_schedule_next_buffer(struct vpfe_device
*vpfe_dev
)
540 vpfe_dev
->next_frm
= list_entry(vpfe_dev
->dma_queue
.next
,
541 struct videobuf_buffer
, queue
);
542 list_del(&vpfe_dev
->next_frm
->queue
);
543 vpfe_dev
->next_frm
->state
= VIDEOBUF_ACTIVE
;
544 addr
= videobuf_to_dma_contig(vpfe_dev
->next_frm
);
546 ccdc_dev
->hw_ops
.setfbaddr(addr
);
549 static void vpfe_schedule_bottom_field(struct vpfe_device
*vpfe_dev
)
553 addr
= videobuf_to_dma_contig(vpfe_dev
->cur_frm
);
554 addr
+= vpfe_dev
->field_off
;
555 ccdc_dev
->hw_ops
.setfbaddr(addr
);
558 static void vpfe_process_buffer_complete(struct vpfe_device
*vpfe_dev
)
560 v4l2_get_timestamp(&vpfe_dev
->cur_frm
->ts
);
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
;
568 static irqreturn_t
vpfe_isr(int irq
, void *dev_id
)
570 struct vpfe_device
*vpfe_dev
= dev_id
;
571 enum v4l2_field field
;
574 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "\nStarting vpfe_isr...\n");
575 field
= vpfe_dev
->fmt
.fmt
.pix
.field
;
577 /* if streaming not started, don't do anything */
578 if (!vpfe_dev
->started
)
581 /* only for 6446 this will be applicable */
582 if (ccdc_dev
->hw_ops
.reset
)
583 ccdc_dev
->hw_ops
.reset();
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
);
594 /* interlaced or TB capture check which field we are in hardware */
595 fid
= ccdc_dev
->hw_ops
.getfid();
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 */
605 * One frame is just being captured. If the next frame
606 * is available, release the current frame and move on
608 if (vpfe_dev
->cur_frm
!= vpfe_dev
->next_frm
)
609 vpfe_process_buffer_complete(vpfe_dev
);
611 * based on whether the two fields are stored
612 * interleavely or separately in memory, reconfigure
613 * the CCDC memory address
615 if (field
== V4L2_FIELD_SEQ_TB
)
616 vpfe_schedule_bottom_field(vpfe_dev
);
620 * if one field is just being captured configure
621 * the next frame get the next frame from the empty
622 * queue if no frame is available hold on to the
625 spin_lock(&vpfe_dev
->dma_queue_lock
);
626 if (!list_empty(&vpfe_dev
->dma_queue
) &&
627 vpfe_dev
->cur_frm
== vpfe_dev
->next_frm
)
628 vpfe_schedule_next_buffer(vpfe_dev
);
629 spin_unlock(&vpfe_dev
->dma_queue_lock
);
630 } else if (fid
== 0) {
632 * out of sync. Recover from any hardware out-of-sync.
633 * May loose one frame
635 vpfe_dev
->field_id
= fid
;
638 if (vpfe_dev
->cfg
->clr_intr
)
639 vpfe_dev
->cfg
->clr_intr(irq
);
644 /* vdint1_isr - isr handler for VINT1 interrupt */
645 static irqreturn_t
vdint1_isr(int irq
, void *dev_id
)
647 struct vpfe_device
*vpfe_dev
= dev_id
;
649 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "\nInside vdint1_isr...\n");
651 /* if streaming not started, don't do anything */
652 if (!vpfe_dev
->started
) {
653 if (vpfe_dev
->cfg
->clr_intr
)
654 vpfe_dev
->cfg
->clr_intr(irq
);
658 spin_lock(&vpfe_dev
->dma_queue_lock
);
659 if ((vpfe_dev
->fmt
.fmt
.pix
.field
== V4L2_FIELD_NONE
) &&
660 !list_empty(&vpfe_dev
->dma_queue
) &&
661 vpfe_dev
->cur_frm
== vpfe_dev
->next_frm
)
662 vpfe_schedule_next_buffer(vpfe_dev
);
663 spin_unlock(&vpfe_dev
->dma_queue_lock
);
665 if (vpfe_dev
->cfg
->clr_intr
)
666 vpfe_dev
->cfg
->clr_intr(irq
);
671 static void vpfe_detach_irq(struct vpfe_device
*vpfe_dev
)
673 enum ccdc_frmfmt frame_format
;
675 frame_format
= ccdc_dev
->hw_ops
.get_frame_format();
676 if (frame_format
== CCDC_FRMFMT_PROGRESSIVE
)
677 free_irq(vpfe_dev
->ccdc_irq1
, vpfe_dev
);
680 static int vpfe_attach_irq(struct vpfe_device
*vpfe_dev
)
682 enum ccdc_frmfmt frame_format
;
684 frame_format
= ccdc_dev
->hw_ops
.get_frame_format();
685 if (frame_format
== CCDC_FRMFMT_PROGRESSIVE
) {
686 return request_irq(vpfe_dev
->ccdc_irq1
, vdint1_isr
,
693 /* vpfe_stop_ccdc_capture: stop streaming in ccdc/isif */
694 static void vpfe_stop_ccdc_capture(struct vpfe_device
*vpfe_dev
)
696 vpfe_dev
->started
= 0;
697 ccdc_dev
->hw_ops
.enable(0);
698 if (ccdc_dev
->hw_ops
.enable_out_to_sdram
)
699 ccdc_dev
->hw_ops
.enable_out_to_sdram(0);
703 * vpfe_release : This function deletes buffer queue, frees the
704 * buffers and the vpfe file handle
706 static int vpfe_release(struct file
*file
)
708 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
709 struct vpfe_fh
*fh
= file
->private_data
;
710 struct vpfe_subdev_info
*sdinfo
;
713 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_release\n");
715 /* Get the device lock */
716 mutex_lock(&vpfe_dev
->lock
);
717 /* if this instance is doing IO */
718 if (fh
->io_allowed
) {
719 if (vpfe_dev
->started
) {
720 sdinfo
= vpfe_dev
->current_subdev
;
721 ret
= v4l2_device_call_until_err(&vpfe_dev
->v4l2_dev
,
724 if (ret
&& (ret
!= -ENOIOCTLCMD
))
725 v4l2_err(&vpfe_dev
->v4l2_dev
,
726 "stream off failed in subdev\n");
727 vpfe_stop_ccdc_capture(vpfe_dev
);
728 vpfe_detach_irq(vpfe_dev
);
729 videobuf_streamoff(&vpfe_dev
->buffer_queue
);
731 vpfe_dev
->io_usrs
= 0;
732 vpfe_dev
->numbuffers
= config_params
.numbuffers
;
733 videobuf_stop(&vpfe_dev
->buffer_queue
);
734 videobuf_mmap_free(&vpfe_dev
->buffer_queue
);
737 /* Decrement device usrs counter */
739 v4l2_fh_del(&fh
->fh
);
740 v4l2_fh_exit(&fh
->fh
);
741 /* If this is the last file handle */
742 if (!vpfe_dev
->usrs
) {
743 vpfe_dev
->initialized
= 0;
744 if (ccdc_dev
->hw_ops
.close
)
745 ccdc_dev
->hw_ops
.close(vpfe_dev
->pdev
);
746 module_put(ccdc_dev
->owner
);
748 mutex_unlock(&vpfe_dev
->lock
);
749 file
->private_data
= NULL
;
750 /* Free memory allocated to file handle object */
756 * vpfe_mmap : It is used to map kernel space buffers
759 static int vpfe_mmap(struct file
*file
, struct vm_area_struct
*vma
)
761 /* Get the device object and file handle object */
762 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
764 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_mmap\n");
766 return videobuf_mmap_mapper(&vpfe_dev
->buffer_queue
, vma
);
770 * vpfe_poll: It is used for select/poll system call
772 static unsigned int vpfe_poll(struct file
*file
, poll_table
*wait
)
774 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
776 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_poll\n");
778 if (vpfe_dev
->started
)
779 return videobuf_poll_stream(file
,
780 &vpfe_dev
->buffer_queue
, wait
);
784 /* vpfe capture driver file operations */
785 static const struct v4l2_file_operations vpfe_fops
= {
786 .owner
= THIS_MODULE
,
788 .release
= vpfe_release
,
789 .unlocked_ioctl
= video_ioctl2
,
795 * vpfe_check_format()
796 * This function adjust the input pixel format as per hardware
797 * capabilities and update the same in pixfmt.
798 * Following algorithm used :-
800 * If given pixformat is not in the vpfe list of pix formats or not
801 * supported by the hardware, current value of pixformat in the device
803 * If given field is not supported, then current field is used. If field
804 * is different from current, then it is matched with that from sub device.
805 * Minimum height is 2 lines for interlaced or tb field and 1 line for
806 * progressive. Maximum height is clamped to active active lines of scan
807 * Minimum width is 32 bytes in memory and width is clamped to active
809 * bytesperline is a multiple of 32.
811 static const struct vpfe_pixel_format
*
812 vpfe_check_format(struct vpfe_device
*vpfe_dev
,
813 struct v4l2_pix_format
*pixfmt
)
815 u32 min_height
= 1, min_width
= 32, max_width
, max_height
;
816 const struct vpfe_pixel_format
*vpfe_pix_fmt
;
820 vpfe_pix_fmt
= vpfe_lookup_pix_format(pixfmt
->pixelformat
);
823 * use current pixel format in the vpfe device. We
824 * will find this pix format in the table
826 pixfmt
->pixelformat
= vpfe_dev
->fmt
.fmt
.pix
.pixelformat
;
827 vpfe_pix_fmt
= vpfe_lookup_pix_format(pixfmt
->pixelformat
);
830 /* check if hw supports it */
833 while (ccdc_dev
->hw_ops
.enum_pix(&pix
, temp
) >= 0) {
834 if (vpfe_pix_fmt
->fmtdesc
.pixelformat
== pix
) {
842 /* use current pixel format */
843 pixfmt
->pixelformat
= vpfe_dev
->fmt
.fmt
.pix
.pixelformat
;
845 * Since this is currently used in the vpfe device, we
846 * will find this pix format in the table
848 vpfe_pix_fmt
= vpfe_lookup_pix_format(pixfmt
->pixelformat
);
851 /* check what field format is supported */
852 if (pixfmt
->field
== V4L2_FIELD_ANY
) {
853 /* if field is any, use current value as default */
854 pixfmt
->field
= vpfe_dev
->fmt
.fmt
.pix
.field
;
858 * if field is not same as current field in the vpfe device
859 * try matching the field with the sub device field
861 if (vpfe_dev
->fmt
.fmt
.pix
.field
!= pixfmt
->field
) {
863 * If field value is not in the supported fields, use current
864 * field used in the device as default
866 switch (pixfmt
->field
) {
867 case V4L2_FIELD_INTERLACED
:
868 case V4L2_FIELD_SEQ_TB
:
869 /* if sub device is supporting progressive, use that */
870 if (!vpfe_dev
->std_info
.frame_format
)
871 pixfmt
->field
= V4L2_FIELD_NONE
;
873 case V4L2_FIELD_NONE
:
874 if (vpfe_dev
->std_info
.frame_format
)
875 pixfmt
->field
= V4L2_FIELD_INTERLACED
;
879 /* use current field as default */
880 pixfmt
->field
= vpfe_dev
->fmt
.fmt
.pix
.field
;
885 /* Now adjust image resolutions supported */
886 if (pixfmt
->field
== V4L2_FIELD_INTERLACED
||
887 pixfmt
->field
== V4L2_FIELD_SEQ_TB
)
890 max_width
= vpfe_dev
->std_info
.active_pixels
;
891 max_height
= vpfe_dev
->std_info
.active_lines
;
892 min_width
/= vpfe_pix_fmt
->bpp
;
894 v4l2_info(&vpfe_dev
->v4l2_dev
, "width = %d, height = %d, bpp = %d\n",
895 pixfmt
->width
, pixfmt
->height
, vpfe_pix_fmt
->bpp
);
897 pixfmt
->width
= clamp((pixfmt
->width
), min_width
, max_width
);
898 pixfmt
->height
= clamp((pixfmt
->height
), min_height
, max_height
);
900 /* If interlaced, adjust height to be a multiple of 2 */
901 if (pixfmt
->field
== V4L2_FIELD_INTERLACED
)
902 pixfmt
->height
&= (~1);
904 * recalculate bytesperline and sizeimage since width
905 * and height might have changed
907 pixfmt
->bytesperline
= (((pixfmt
->width
* vpfe_pix_fmt
->bpp
) + 31)
909 if (pixfmt
->pixelformat
== V4L2_PIX_FMT_NV12
)
911 pixfmt
->bytesperline
* pixfmt
->height
+
912 ((pixfmt
->bytesperline
* pixfmt
->height
) >> 1);
914 pixfmt
->sizeimage
= pixfmt
->bytesperline
* pixfmt
->height
;
916 v4l2_info(&vpfe_dev
->v4l2_dev
, "adjusted width = %d, height = %d, bpp = %d, bytesperline = %d, sizeimage = %d\n",
917 pixfmt
->width
, pixfmt
->height
, vpfe_pix_fmt
->bpp
,
918 pixfmt
->bytesperline
, pixfmt
->sizeimage
);
922 static int vpfe_querycap(struct file
*file
, void *priv
,
923 struct v4l2_capability
*cap
)
925 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
927 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_querycap\n");
929 cap
->device_caps
= V4L2_CAP_VIDEO_CAPTURE
| V4L2_CAP_STREAMING
;
930 cap
->capabilities
= cap
->device_caps
| V4L2_CAP_DEVICE_CAPS
;
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
));
937 static int vpfe_g_fmt_vid_cap(struct file
*file
, void *priv
,
938 struct v4l2_format
*fmt
)
940 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
942 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_g_fmt_vid_cap\n");
943 /* Fill in the information about format */
944 *fmt
= vpfe_dev
->fmt
;
948 static int vpfe_enum_fmt_vid_cap(struct file
*file
, void *priv
,
949 struct v4l2_fmtdesc
*fmt
)
951 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
952 const struct vpfe_pixel_format
*pix_fmt
;
956 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_enum_fmt_vid_cap\n");
958 if (ccdc_dev
->hw_ops
.enum_pix(&pix
, fmt
->index
) < 0)
961 /* Fill in the information about format */
962 pix_fmt
= vpfe_lookup_pix_format(pix
);
964 temp_index
= fmt
->index
;
965 *fmt
= pix_fmt
->fmtdesc
;
966 fmt
->index
= temp_index
;
972 static int vpfe_s_fmt_vid_cap(struct file
*file
, void *priv
,
973 struct v4l2_format
*fmt
)
975 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
976 const struct vpfe_pixel_format
*pix_fmts
;
979 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_s_fmt_vid_cap\n");
981 /* If streaming is started, return error */
982 if (vpfe_dev
->started
) {
983 v4l2_err(&vpfe_dev
->v4l2_dev
, "Streaming is started\n");
987 /* Check for valid frame format */
988 pix_fmts
= vpfe_check_format(vpfe_dev
, &fmt
->fmt
.pix
);
992 /* store the pixel format in the device object */
993 ret
= mutex_lock_interruptible(&vpfe_dev
->lock
);
997 /* First detach any IRQ if currently attached */
998 vpfe_detach_irq(vpfe_dev
);
999 vpfe_dev
->fmt
= *fmt
;
1000 /* set image capture parameters in the ccdc */
1001 ret
= vpfe_config_ccdc_image_format(vpfe_dev
);
1002 mutex_unlock(&vpfe_dev
->lock
);
1006 static int vpfe_try_fmt_vid_cap(struct file
*file
, void *priv
,
1007 struct v4l2_format
*f
)
1009 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1010 const struct vpfe_pixel_format
*pix_fmts
;
1012 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_try_fmt_vid_cap\n");
1014 pix_fmts
= vpfe_check_format(vpfe_dev
, &f
->fmt
.pix
);
1021 * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
1022 * given app input index
1024 static int vpfe_get_subdev_input_index(struct vpfe_device
*vpfe_dev
,
1026 int *subdev_input_index
,
1027 int app_input_index
)
1029 struct vpfe_config
*cfg
= vpfe_dev
->cfg
;
1030 struct vpfe_subdev_info
*sdinfo
;
1033 for (i
= 0; i
< cfg
->num_subdevs
; i
++) {
1034 sdinfo
= &cfg
->sub_devs
[i
];
1035 if (app_input_index
< (j
+ sdinfo
->num_inputs
)) {
1037 *subdev_input_index
= app_input_index
- j
;
1040 j
+= sdinfo
->num_inputs
;
1046 * vpfe_get_app_input - Get app input index for a given subdev input index
1047 * driver stores the input index of the current sub device and translate it
1048 * when application request the current input
1050 static int vpfe_get_app_input_index(struct vpfe_device
*vpfe_dev
,
1051 int *app_input_index
)
1053 struct vpfe_config
*cfg
= vpfe_dev
->cfg
;
1054 struct vpfe_subdev_info
*sdinfo
;
1057 for (i
= 0; i
< cfg
->num_subdevs
; i
++) {
1058 sdinfo
= &cfg
->sub_devs
[i
];
1059 if (!strcmp(sdinfo
->name
, vpfe_dev
->current_subdev
->name
)) {
1060 if (vpfe_dev
->current_input
>= sdinfo
->num_inputs
)
1062 *app_input_index
= j
+ vpfe_dev
->current_input
;
1065 j
+= sdinfo
->num_inputs
;
1070 static int vpfe_enum_input(struct file
*file
, void *priv
,
1071 struct v4l2_input
*inp
)
1073 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1074 struct vpfe_subdev_info
*sdinfo
;
1077 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_enum_input\n");
1079 if (vpfe_get_subdev_input_index(vpfe_dev
,
1083 v4l2_err(&vpfe_dev
->v4l2_dev
, "input information not found for the subdev\n");
1086 sdinfo
= &vpfe_dev
->cfg
->sub_devs
[subdev
];
1087 *inp
= sdinfo
->inputs
[index
];
1091 static int vpfe_g_input(struct file
*file
, void *priv
, unsigned int *index
)
1093 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1095 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_g_input\n");
1097 return vpfe_get_app_input_index(vpfe_dev
, index
);
1101 static int vpfe_s_input(struct file
*file
, void *priv
, unsigned int index
)
1103 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1104 struct v4l2_subdev
*sd
;
1105 struct vpfe_subdev_info
*sdinfo
;
1106 int subdev_index
, inp_index
;
1107 struct vpfe_route
*route
;
1111 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_s_input\n");
1113 ret
= mutex_lock_interruptible(&vpfe_dev
->lock
);
1118 * If streaming is started return device busy
1121 if (vpfe_dev
->started
) {
1122 v4l2_err(&vpfe_dev
->v4l2_dev
, "Streaming is on\n");
1126 ret
= vpfe_get_subdev_input_index(vpfe_dev
,
1131 v4l2_err(&vpfe_dev
->v4l2_dev
, "invalid input index\n");
1135 sdinfo
= &vpfe_dev
->cfg
->sub_devs
[subdev_index
];
1136 sd
= vpfe_dev
->sd
[subdev_index
];
1137 route
= &sdinfo
->routes
[inp_index
];
1138 if (route
&& sdinfo
->can_route
) {
1139 input
= route
->input
;
1140 output
= route
->output
;
1147 ret
= v4l2_subdev_call(sd
, video
, s_routing
, input
, output
, 0);
1150 v4l2_err(&vpfe_dev
->v4l2_dev
,
1151 "vpfe_doioctl:error in setting input in decoder\n");
1155 vpfe_dev
->current_subdev
= sdinfo
;
1157 vpfe_dev
->v4l2_dev
.ctrl_handler
= sd
->ctrl_handler
;
1158 vpfe_dev
->current_input
= index
;
1159 vpfe_dev
->std_index
= 0;
1161 /* set the bus/interface parameter for the sub device in ccdc */
1162 ret
= ccdc_dev
->hw_ops
.set_hw_if_params(&sdinfo
->ccdc_if_params
);
1166 /* set the default image parameters in the device */
1167 ret
= vpfe_config_image_format(vpfe_dev
,
1168 vpfe_standards
[vpfe_dev
->std_index
].std_id
);
1170 mutex_unlock(&vpfe_dev
->lock
);
1174 static int vpfe_querystd(struct file
*file
, void *priv
, v4l2_std_id
*std_id
)
1176 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1177 struct vpfe_subdev_info
*sdinfo
;
1180 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_querystd\n");
1182 ret
= mutex_lock_interruptible(&vpfe_dev
->lock
);
1183 sdinfo
= vpfe_dev
->current_subdev
;
1186 /* Call querystd function of decoder device */
1187 ret
= v4l2_device_call_until_err(&vpfe_dev
->v4l2_dev
, sdinfo
->grp_id
,
1188 video
, querystd
, std_id
);
1189 mutex_unlock(&vpfe_dev
->lock
);
1193 static int vpfe_s_std(struct file
*file
, void *priv
, v4l2_std_id std_id
)
1195 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1196 struct vpfe_subdev_info
*sdinfo
;
1199 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_s_std\n");
1201 /* Call decoder driver function to set the standard */
1202 ret
= mutex_lock_interruptible(&vpfe_dev
->lock
);
1206 sdinfo
= vpfe_dev
->current_subdev
;
1207 /* If streaming is started, return device busy error */
1208 if (vpfe_dev
->started
) {
1209 v4l2_err(&vpfe_dev
->v4l2_dev
, "streaming is started\n");
1214 ret
= v4l2_device_call_until_err(&vpfe_dev
->v4l2_dev
, sdinfo
->grp_id
,
1215 video
, s_std
, std_id
);
1217 v4l2_err(&vpfe_dev
->v4l2_dev
, "Failed to set standard\n");
1220 ret
= vpfe_config_image_format(vpfe_dev
, std_id
);
1223 mutex_unlock(&vpfe_dev
->lock
);
1227 static int vpfe_g_std(struct file
*file
, void *priv
, v4l2_std_id
*std_id
)
1229 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1231 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_g_std\n");
1233 *std_id
= vpfe_standards
[vpfe_dev
->std_index
].std_id
;
1237 * Videobuf operations
1239 static int vpfe_videobuf_setup(struct videobuf_queue
*vq
,
1240 unsigned int *count
,
1243 struct vpfe_fh
*fh
= vq
->priv_data
;
1244 struct vpfe_device
*vpfe_dev
= fh
->vpfe_dev
;
1246 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_buffer_setup\n");
1247 *size
= vpfe_dev
->fmt
.fmt
.pix
.sizeimage
;
1248 if (vpfe_dev
->memory
== V4L2_MEMORY_MMAP
&&
1249 vpfe_dev
->fmt
.fmt
.pix
.sizeimage
> config_params
.device_bufsize
)
1250 *size
= config_params
.device_bufsize
;
1252 if (*count
< config_params
.min_numbuffers
)
1253 *count
= config_params
.min_numbuffers
;
1254 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
,
1255 "count=%d, size=%d\n", *count
, *size
);
1259 static int vpfe_videobuf_prepare(struct videobuf_queue
*vq
,
1260 struct videobuf_buffer
*vb
,
1261 enum v4l2_field field
)
1263 struct vpfe_fh
*fh
= vq
->priv_data
;
1264 struct vpfe_device
*vpfe_dev
= fh
->vpfe_dev
;
1268 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_buffer_prepare\n");
1270 /* If buffer is not initialized, initialize it */
1271 if (VIDEOBUF_NEEDS_INIT
== vb
->state
) {
1272 vb
->width
= vpfe_dev
->fmt
.fmt
.pix
.width
;
1273 vb
->height
= vpfe_dev
->fmt
.fmt
.pix
.height
;
1274 vb
->size
= vpfe_dev
->fmt
.fmt
.pix
.sizeimage
;
1277 ret
= videobuf_iolock(vq
, vb
, NULL
);
1281 addr
= videobuf_to_dma_contig(vb
);
1282 /* Make sure user addresses are aligned to 32 bytes */
1283 if (!ALIGN(addr
, 32))
1286 vb
->state
= VIDEOBUF_PREPARED
;
1291 static void vpfe_videobuf_queue(struct videobuf_queue
*vq
,
1292 struct videobuf_buffer
*vb
)
1294 /* Get the file handle object and device object */
1295 struct vpfe_fh
*fh
= vq
->priv_data
;
1296 struct vpfe_device
*vpfe_dev
= fh
->vpfe_dev
;
1297 unsigned long flags
;
1299 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_buffer_queue\n");
1301 /* add the buffer to the DMA queue */
1302 spin_lock_irqsave(&vpfe_dev
->dma_queue_lock
, flags
);
1303 list_add_tail(&vb
->queue
, &vpfe_dev
->dma_queue
);
1304 spin_unlock_irqrestore(&vpfe_dev
->dma_queue_lock
, flags
);
1306 /* Change state of the buffer */
1307 vb
->state
= VIDEOBUF_QUEUED
;
1310 static void vpfe_videobuf_release(struct videobuf_queue
*vq
,
1311 struct videobuf_buffer
*vb
)
1313 struct vpfe_fh
*fh
= vq
->priv_data
;
1314 struct vpfe_device
*vpfe_dev
= fh
->vpfe_dev
;
1315 unsigned long flags
;
1317 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_videobuf_release\n");
1320 * We need to flush the buffer from the dma queue since
1321 * they are de-allocated
1323 spin_lock_irqsave(&vpfe_dev
->dma_queue_lock
, flags
);
1324 INIT_LIST_HEAD(&vpfe_dev
->dma_queue
);
1325 spin_unlock_irqrestore(&vpfe_dev
->dma_queue_lock
, flags
);
1326 videobuf_dma_contig_free(vq
, vb
);
1327 vb
->state
= VIDEOBUF_NEEDS_INIT
;
1330 static struct videobuf_queue_ops vpfe_videobuf_qops
= {
1331 .buf_setup
= vpfe_videobuf_setup
,
1332 .buf_prepare
= vpfe_videobuf_prepare
,
1333 .buf_queue
= vpfe_videobuf_queue
,
1334 .buf_release
= vpfe_videobuf_release
,
1338 * vpfe_reqbufs. currently support REQBUF only once opening
1341 static int vpfe_reqbufs(struct file
*file
, void *priv
,
1342 struct v4l2_requestbuffers
*req_buf
)
1344 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1345 struct vpfe_fh
*fh
= file
->private_data
;
1348 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_reqbufs\n");
1350 if (V4L2_BUF_TYPE_VIDEO_CAPTURE
!= req_buf
->type
) {
1351 v4l2_err(&vpfe_dev
->v4l2_dev
, "Invalid buffer type\n");
1355 ret
= mutex_lock_interruptible(&vpfe_dev
->lock
);
1359 if (vpfe_dev
->io_usrs
!= 0) {
1360 v4l2_err(&vpfe_dev
->v4l2_dev
, "Only one IO user allowed\n");
1365 vpfe_dev
->memory
= req_buf
->memory
;
1366 videobuf_queue_dma_contig_init(&vpfe_dev
->buffer_queue
,
1367 &vpfe_videobuf_qops
,
1371 vpfe_dev
->fmt
.fmt
.pix
.field
,
1372 sizeof(struct videobuf_buffer
),
1376 vpfe_dev
->io_usrs
= 1;
1377 INIT_LIST_HEAD(&vpfe_dev
->dma_queue
);
1378 ret
= videobuf_reqbufs(&vpfe_dev
->buffer_queue
, req_buf
);
1380 mutex_unlock(&vpfe_dev
->lock
);
1384 static int vpfe_querybuf(struct file
*file
, void *priv
,
1385 struct v4l2_buffer
*buf
)
1387 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1389 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_querybuf\n");
1391 if (V4L2_BUF_TYPE_VIDEO_CAPTURE
!= buf
->type
) {
1392 v4l2_err(&vpfe_dev
->v4l2_dev
, "Invalid buf type\n");
1396 if (vpfe_dev
->memory
!= V4L2_MEMORY_MMAP
) {
1397 v4l2_err(&vpfe_dev
->v4l2_dev
, "Invalid memory\n");
1400 /* Call videobuf_querybuf to get information */
1401 return videobuf_querybuf(&vpfe_dev
->buffer_queue
, buf
);
1404 static int vpfe_qbuf(struct file
*file
, void *priv
,
1405 struct v4l2_buffer
*p
)
1407 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1408 struct vpfe_fh
*fh
= file
->private_data
;
1410 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_qbuf\n");
1412 if (V4L2_BUF_TYPE_VIDEO_CAPTURE
!= p
->type
) {
1413 v4l2_err(&vpfe_dev
->v4l2_dev
, "Invalid buf type\n");
1418 * If this file handle is not allowed to do IO,
1421 if (!fh
->io_allowed
) {
1422 v4l2_err(&vpfe_dev
->v4l2_dev
, "fh->io_allowed\n");
1425 return videobuf_qbuf(&vpfe_dev
->buffer_queue
, p
);
1428 static int vpfe_dqbuf(struct file
*file
, void *priv
,
1429 struct v4l2_buffer
*buf
)
1431 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1433 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_dqbuf\n");
1435 if (V4L2_BUF_TYPE_VIDEO_CAPTURE
!= buf
->type
) {
1436 v4l2_err(&vpfe_dev
->v4l2_dev
, "Invalid buf type\n");
1439 return videobuf_dqbuf(&vpfe_dev
->buffer_queue
,
1440 buf
, file
->f_flags
& O_NONBLOCK
);
1444 * vpfe_calculate_offsets : This function calculates buffers offset
1445 * for top and bottom field
1447 static void vpfe_calculate_offsets(struct vpfe_device
*vpfe_dev
)
1449 struct v4l2_rect image_win
;
1451 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_calculate_offsets\n");
1453 ccdc_dev
->hw_ops
.get_image_window(&image_win
);
1454 vpfe_dev
->field_off
= image_win
.height
* image_win
.width
;
1457 /* vpfe_start_ccdc_capture: start streaming in ccdc/isif */
1458 static void vpfe_start_ccdc_capture(struct vpfe_device
*vpfe_dev
)
1460 ccdc_dev
->hw_ops
.enable(1);
1461 if (ccdc_dev
->hw_ops
.enable_out_to_sdram
)
1462 ccdc_dev
->hw_ops
.enable_out_to_sdram(1);
1463 vpfe_dev
->started
= 1;
1467 * vpfe_streamon. Assume the DMA queue is not empty.
1468 * application is expected to call QBUF before calling
1469 * this ioctl. If not, driver returns error
1471 static int vpfe_streamon(struct file
*file
, void *priv
,
1472 enum v4l2_buf_type buf_type
)
1474 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1475 struct vpfe_fh
*fh
= file
->private_data
;
1476 struct vpfe_subdev_info
*sdinfo
;
1480 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_streamon\n");
1482 if (V4L2_BUF_TYPE_VIDEO_CAPTURE
!= buf_type
) {
1483 v4l2_err(&vpfe_dev
->v4l2_dev
, "Invalid buf type\n");
1487 /* If file handle is not allowed IO, return error */
1488 if (!fh
->io_allowed
) {
1489 v4l2_err(&vpfe_dev
->v4l2_dev
, "fh->io_allowed\n");
1493 sdinfo
= vpfe_dev
->current_subdev
;
1494 ret
= v4l2_device_call_until_err(&vpfe_dev
->v4l2_dev
, sdinfo
->grp_id
,
1495 video
, s_stream
, 1);
1497 if (ret
&& (ret
!= -ENOIOCTLCMD
)) {
1498 v4l2_err(&vpfe_dev
->v4l2_dev
, "stream on failed in subdev\n");
1502 /* If buffer queue is empty, return error */
1503 if (list_empty(&vpfe_dev
->buffer_queue
.stream
)) {
1504 v4l2_err(&vpfe_dev
->v4l2_dev
, "buffer queue is empty\n");
1508 /* Call videobuf_streamon to start streaming * in videobuf */
1509 ret
= videobuf_streamon(&vpfe_dev
->buffer_queue
);
1514 ret
= mutex_lock_interruptible(&vpfe_dev
->lock
);
1517 /* Get the next frame from the buffer queue */
1518 vpfe_dev
->next_frm
= list_entry(vpfe_dev
->dma_queue
.next
,
1519 struct videobuf_buffer
, queue
);
1520 vpfe_dev
->cur_frm
= vpfe_dev
->next_frm
;
1521 /* Remove buffer from the buffer queue */
1522 list_del(&vpfe_dev
->cur_frm
->queue
);
1523 /* Mark state of the current frame to active */
1524 vpfe_dev
->cur_frm
->state
= VIDEOBUF_ACTIVE
;
1525 /* Initialize field_id and started member */
1526 vpfe_dev
->field_id
= 0;
1527 addr
= videobuf_to_dma_contig(vpfe_dev
->cur_frm
);
1529 /* Calculate field offset */
1530 vpfe_calculate_offsets(vpfe_dev
);
1532 if (vpfe_attach_irq(vpfe_dev
) < 0) {
1533 v4l2_err(&vpfe_dev
->v4l2_dev
,
1534 "Error in attaching interrupt handle\n");
1538 if (ccdc_dev
->hw_ops
.configure() < 0) {
1539 v4l2_err(&vpfe_dev
->v4l2_dev
,
1540 "Error in configuring ccdc\n");
1544 ccdc_dev
->hw_ops
.setfbaddr((unsigned long)(addr
));
1545 vpfe_start_ccdc_capture(vpfe_dev
);
1546 mutex_unlock(&vpfe_dev
->lock
);
1549 mutex_unlock(&vpfe_dev
->lock
);
1551 ret
= videobuf_streamoff(&vpfe_dev
->buffer_queue
);
1555 static int vpfe_streamoff(struct file
*file
, void *priv
,
1556 enum v4l2_buf_type buf_type
)
1558 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1559 struct vpfe_fh
*fh
= file
->private_data
;
1560 struct vpfe_subdev_info
*sdinfo
;
1563 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_streamoff\n");
1565 if (V4L2_BUF_TYPE_VIDEO_CAPTURE
!= buf_type
) {
1566 v4l2_err(&vpfe_dev
->v4l2_dev
, "Invalid buf type\n");
1570 /* If io is allowed for this file handle, return error */
1571 if (!fh
->io_allowed
) {
1572 v4l2_err(&vpfe_dev
->v4l2_dev
, "fh->io_allowed\n");
1576 /* If streaming is not started, return error */
1577 if (!vpfe_dev
->started
) {
1578 v4l2_err(&vpfe_dev
->v4l2_dev
, "device started\n");
1582 ret
= mutex_lock_interruptible(&vpfe_dev
->lock
);
1586 vpfe_stop_ccdc_capture(vpfe_dev
);
1587 vpfe_detach_irq(vpfe_dev
);
1589 sdinfo
= vpfe_dev
->current_subdev
;
1590 ret
= v4l2_device_call_until_err(&vpfe_dev
->v4l2_dev
, sdinfo
->grp_id
,
1591 video
, s_stream
, 0);
1593 if (ret
&& (ret
!= -ENOIOCTLCMD
))
1594 v4l2_err(&vpfe_dev
->v4l2_dev
, "stream off failed in subdev\n");
1595 ret
= videobuf_streamoff(&vpfe_dev
->buffer_queue
);
1596 mutex_unlock(&vpfe_dev
->lock
);
1600 static int vpfe_cropcap(struct file
*file
, void *priv
,
1601 struct v4l2_cropcap
*crop
)
1603 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1605 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_cropcap\n");
1607 if (crop
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1609 /* If std_index is invalid, then just return (== 1:1 aspect) */
1610 if (vpfe_dev
->std_index
>= ARRAY_SIZE(vpfe_standards
))
1613 crop
->pixelaspect
= vpfe_standards
[vpfe_dev
->std_index
].pixelaspect
;
1617 static int vpfe_g_selection(struct file
*file
, void *priv
,
1618 struct v4l2_selection
*sel
)
1620 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1622 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_g_selection\n");
1624 if (sel
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1627 switch (sel
->target
) {
1628 case V4L2_SEL_TGT_CROP
:
1629 sel
->r
= vpfe_dev
->crop
;
1631 case V4L2_SEL_TGT_CROP_DEFAULT
:
1632 case V4L2_SEL_TGT_CROP_BOUNDS
:
1633 sel
->r
.width
= vpfe_standards
[vpfe_dev
->std_index
].width
;
1634 sel
->r
.height
= vpfe_standards
[vpfe_dev
->std_index
].height
;
1642 static int vpfe_s_selection(struct file
*file
, void *priv
,
1643 struct v4l2_selection
*sel
)
1645 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1646 struct v4l2_rect rect
= sel
->r
;
1649 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_s_selection\n");
1651 if (sel
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
||
1652 sel
->target
!= V4L2_SEL_TGT_CROP
)
1655 if (vpfe_dev
->started
) {
1656 /* make sure streaming is not started */
1657 v4l2_err(&vpfe_dev
->v4l2_dev
,
1658 "Cannot change crop when streaming is ON\n");
1662 ret
= mutex_lock_interruptible(&vpfe_dev
->lock
);
1666 if (rect
.top
< 0 || rect
.left
< 0) {
1667 v4l2_err(&vpfe_dev
->v4l2_dev
,
1668 "doesn't support negative values for top & left\n");
1673 /* adjust the width to 16 pixel boundary */
1674 rect
.width
= ((rect
.width
+ 15) & ~0xf);
1676 /* make sure parameters are valid */
1677 if ((rect
.left
+ rect
.width
>
1678 vpfe_dev
->std_info
.active_pixels
) ||
1679 (rect
.top
+ rect
.height
>
1680 vpfe_dev
->std_info
.active_lines
)) {
1681 v4l2_err(&vpfe_dev
->v4l2_dev
, "Error in S_SELECTION params\n");
1685 ccdc_dev
->hw_ops
.set_image_window(&rect
);
1686 vpfe_dev
->fmt
.fmt
.pix
.width
= rect
.width
;
1687 vpfe_dev
->fmt
.fmt
.pix
.height
= rect
.height
;
1688 vpfe_dev
->fmt
.fmt
.pix
.bytesperline
=
1689 ccdc_dev
->hw_ops
.get_line_length();
1690 vpfe_dev
->fmt
.fmt
.pix
.sizeimage
=
1691 vpfe_dev
->fmt
.fmt
.pix
.bytesperline
*
1692 vpfe_dev
->fmt
.fmt
.pix
.height
;
1693 vpfe_dev
->crop
= rect
;
1696 mutex_unlock(&vpfe_dev
->lock
);
1701 static long vpfe_param_handler(struct file
*file
, void *priv
,
1702 bool valid_prio
, unsigned int cmd
, void *param
)
1704 struct vpfe_device
*vpfe_dev
= video_drvdata(file
);
1707 v4l2_dbg(2, debug
, &vpfe_dev
->v4l2_dev
, "vpfe_param_handler\n");
1709 if (vpfe_dev
->started
) {
1710 /* only allowed if streaming is not started */
1711 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
,
1712 "device already started\n");
1716 ret
= mutex_lock_interruptible(&vpfe_dev
->lock
);
1721 case VPFE_CMD_S_CCDC_RAW_PARAMS
:
1722 v4l2_warn(&vpfe_dev
->v4l2_dev
,
1723 "VPFE_CMD_S_CCDC_RAW_PARAMS: experimental ioctl\n");
1724 if (ccdc_dev
->hw_ops
.set_params
) {
1725 ret
= ccdc_dev
->hw_ops
.set_params(param
);
1727 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
,
1728 "Error setting parameters in CCDC\n");
1731 ret
= vpfe_get_ccdc_image_format(vpfe_dev
,
1734 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
,
1735 "Invalid image format at CCDC\n");
1740 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
,
1741 "VPFE_CMD_S_CCDC_RAW_PARAMS not supported\n");
1748 mutex_unlock(&vpfe_dev
->lock
);
1753 /* vpfe capture ioctl operations */
1754 static const struct v4l2_ioctl_ops vpfe_ioctl_ops
= {
1755 .vidioc_querycap
= vpfe_querycap
,
1756 .vidioc_g_fmt_vid_cap
= vpfe_g_fmt_vid_cap
,
1757 .vidioc_enum_fmt_vid_cap
= vpfe_enum_fmt_vid_cap
,
1758 .vidioc_s_fmt_vid_cap
= vpfe_s_fmt_vid_cap
,
1759 .vidioc_try_fmt_vid_cap
= vpfe_try_fmt_vid_cap
,
1760 .vidioc_enum_input
= vpfe_enum_input
,
1761 .vidioc_g_input
= vpfe_g_input
,
1762 .vidioc_s_input
= vpfe_s_input
,
1763 .vidioc_querystd
= vpfe_querystd
,
1764 .vidioc_s_std
= vpfe_s_std
,
1765 .vidioc_g_std
= vpfe_g_std
,
1766 .vidioc_reqbufs
= vpfe_reqbufs
,
1767 .vidioc_querybuf
= vpfe_querybuf
,
1768 .vidioc_qbuf
= vpfe_qbuf
,
1769 .vidioc_dqbuf
= vpfe_dqbuf
,
1770 .vidioc_streamon
= vpfe_streamon
,
1771 .vidioc_streamoff
= vpfe_streamoff
,
1772 .vidioc_cropcap
= vpfe_cropcap
,
1773 .vidioc_g_selection
= vpfe_g_selection
,
1774 .vidioc_s_selection
= vpfe_s_selection
,
1775 .vidioc_default
= vpfe_param_handler
,
1778 static struct vpfe_device
*vpfe_initialize(void)
1780 struct vpfe_device
*vpfe_dev
;
1782 /* Default number of buffers should be 3 */
1783 if ((numbuffers
> 0) &&
1784 (numbuffers
< config_params
.min_numbuffers
))
1785 numbuffers
= config_params
.min_numbuffers
;
1788 * Set buffer size to min buffers size if invalid buffer size is
1791 if (bufsize
< config_params
.min_bufsize
)
1792 bufsize
= config_params
.min_bufsize
;
1794 config_params
.numbuffers
= numbuffers
;
1797 config_params
.device_bufsize
= bufsize
;
1799 /* Allocate memory for device objects */
1800 vpfe_dev
= kzalloc(sizeof(*vpfe_dev
), GFP_KERNEL
);
1806 * vpfe_probe : This function creates device entries by register
1807 * itself to the V4L2 driver and initializes fields of each
1810 static int vpfe_probe(struct platform_device
*pdev
)
1812 struct vpfe_subdev_info
*sdinfo
;
1813 struct vpfe_config
*vpfe_cfg
;
1814 struct resource
*res1
;
1815 struct vpfe_device
*vpfe_dev
;
1816 struct i2c_adapter
*i2c_adap
;
1817 struct video_device
*vfd
;
1819 int num_subdevs
= 0;
1821 /* Get the pointer to the device object */
1822 vpfe_dev
= vpfe_initialize();
1825 v4l2_err(pdev
->dev
.driver
,
1826 "Failed to allocate memory for vpfe_dev\n");
1830 vpfe_dev
->pdev
= &pdev
->dev
;
1832 if (!pdev
->dev
.platform_data
) {
1833 v4l2_err(pdev
->dev
.driver
, "Unable to get vpfe config\n");
1835 goto probe_free_dev_mem
;
1838 vpfe_cfg
= pdev
->dev
.platform_data
;
1839 vpfe_dev
->cfg
= vpfe_cfg
;
1840 if (!vpfe_cfg
->ccdc
|| !vpfe_cfg
->card_name
|| !vpfe_cfg
->sub_devs
) {
1841 v4l2_err(pdev
->dev
.driver
, "null ptr in vpfe_cfg\n");
1843 goto probe_free_dev_mem
;
1846 /* Allocate memory for ccdc configuration */
1847 ccdc_cfg
= kmalloc(sizeof(*ccdc_cfg
), GFP_KERNEL
);
1850 goto probe_free_dev_mem
;
1853 mutex_lock(&ccdc_lock
);
1855 strncpy(ccdc_cfg
->name
, vpfe_cfg
->ccdc
, 32);
1856 /* Get VINT0 irq resource */
1857 res1
= platform_get_resource(pdev
, IORESOURCE_IRQ
, 0);
1859 v4l2_err(pdev
->dev
.driver
,
1860 "Unable to get interrupt for VINT0\n");
1862 goto probe_free_ccdc_cfg_mem
;
1864 vpfe_dev
->ccdc_irq0
= res1
->start
;
1866 /* Get VINT1 irq resource */
1867 res1
= platform_get_resource(pdev
, IORESOURCE_IRQ
, 1);
1869 v4l2_err(pdev
->dev
.driver
,
1870 "Unable to get interrupt for VINT1\n");
1872 goto probe_free_ccdc_cfg_mem
;
1874 vpfe_dev
->ccdc_irq1
= res1
->start
;
1876 ret
= request_irq(vpfe_dev
->ccdc_irq0
, vpfe_isr
, 0,
1877 "vpfe_capture0", vpfe_dev
);
1880 v4l2_err(pdev
->dev
.driver
, "Unable to request interrupt\n");
1881 goto probe_free_ccdc_cfg_mem
;
1884 vfd
= &vpfe_dev
->video_dev
;
1885 /* Initialize field of video device */
1886 vfd
->release
= video_device_release_empty
;
1887 vfd
->fops
= &vpfe_fops
;
1888 vfd
->ioctl_ops
= &vpfe_ioctl_ops
;
1890 vfd
->v4l2_dev
= &vpfe_dev
->v4l2_dev
;
1891 snprintf(vfd
->name
, sizeof(vfd
->name
),
1894 (VPFE_CAPTURE_VERSION_CODE
>> 16) & 0xff,
1895 (VPFE_CAPTURE_VERSION_CODE
>> 8) & 0xff,
1896 (VPFE_CAPTURE_VERSION_CODE
) & 0xff);
1898 ret
= v4l2_device_register(&pdev
->dev
, &vpfe_dev
->v4l2_dev
);
1900 v4l2_err(pdev
->dev
.driver
,
1901 "Unable to register v4l2 device.\n");
1902 goto probe_out_release_irq
;
1904 v4l2_info(&vpfe_dev
->v4l2_dev
, "v4l2 device registered\n");
1905 spin_lock_init(&vpfe_dev
->irqlock
);
1906 spin_lock_init(&vpfe_dev
->dma_queue_lock
);
1907 mutex_init(&vpfe_dev
->lock
);
1909 /* Initialize field of the device objects */
1910 vpfe_dev
->numbuffers
= config_params
.numbuffers
;
1912 /* register video device */
1913 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
,
1914 "trying to register vpfe device.\n");
1915 v4l2_dbg(1, debug
, &vpfe_dev
->v4l2_dev
,
1916 "video_dev=%p\n", &vpfe_dev
->video_dev
);
1917 vpfe_dev
->fmt
.type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1918 ret
= video_register_device(&vpfe_dev
->video_dev
,
1919 VFL_TYPE_GRABBER
, -1);
1922 v4l2_err(pdev
->dev
.driver
,
1923 "Unable to register video device.\n");
1924 goto probe_out_v4l2_unregister
;
1927 v4l2_info(&vpfe_dev
->v4l2_dev
, "video device registered\n");
1928 /* set the driver data in platform device */
1929 platform_set_drvdata(pdev
, vpfe_dev
);
1930 /* set driver private data */
1931 video_set_drvdata(&vpfe_dev
->video_dev
, vpfe_dev
);
1932 i2c_adap
= i2c_get_adapter(vpfe_cfg
->i2c_adapter_id
);
1933 num_subdevs
= vpfe_cfg
->num_subdevs
;
1934 vpfe_dev
->sd
= kmalloc_array(num_subdevs
,
1935 sizeof(*vpfe_dev
->sd
),
1937 if (!vpfe_dev
->sd
) {
1939 goto probe_out_video_unregister
;
1942 for (i
= 0; i
< num_subdevs
; i
++) {
1943 struct v4l2_input
*inps
;
1945 sdinfo
= &vpfe_cfg
->sub_devs
[i
];
1947 /* Load up the subdevice */
1949 v4l2_i2c_new_subdev_board(&vpfe_dev
->v4l2_dev
,
1951 &sdinfo
->board_info
,
1953 if (vpfe_dev
->sd
[i
]) {
1954 v4l2_info(&vpfe_dev
->v4l2_dev
,
1955 "v4l2 sub device %s registered\n",
1957 vpfe_dev
->sd
[i
]->grp_id
= sdinfo
->grp_id
;
1958 /* update tvnorms from the sub devices */
1959 for (j
= 0; j
< sdinfo
->num_inputs
; j
++) {
1960 inps
= &sdinfo
->inputs
[j
];
1961 vfd
->tvnorms
|= inps
->std
;
1964 v4l2_info(&vpfe_dev
->v4l2_dev
,
1965 "v4l2 sub device %s register fails\n",
1972 /* set first sub device as current one */
1973 vpfe_dev
->current_subdev
= &vpfe_cfg
->sub_devs
[0];
1974 vpfe_dev
->v4l2_dev
.ctrl_handler
= vpfe_dev
->sd
[0]->ctrl_handler
;
1976 /* We have at least one sub device to work with */
1977 mutex_unlock(&ccdc_lock
);
1981 kfree(vpfe_dev
->sd
);
1982 probe_out_video_unregister
:
1983 video_unregister_device(&vpfe_dev
->video_dev
);
1984 probe_out_v4l2_unregister
:
1985 v4l2_device_unregister(&vpfe_dev
->v4l2_dev
);
1986 probe_out_release_irq
:
1987 free_irq(vpfe_dev
->ccdc_irq0
, vpfe_dev
);
1988 probe_free_ccdc_cfg_mem
:
1990 mutex_unlock(&ccdc_lock
);
1997 * vpfe_remove : It un-register device from V4L2 driver
1999 static int vpfe_remove(struct platform_device
*pdev
)
2001 struct vpfe_device
*vpfe_dev
= platform_get_drvdata(pdev
);
2003 v4l2_info(pdev
->dev
.driver
, "vpfe_remove\n");
2005 free_irq(vpfe_dev
->ccdc_irq0
, vpfe_dev
);
2006 kfree(vpfe_dev
->sd
);
2007 v4l2_device_unregister(&vpfe_dev
->v4l2_dev
);
2008 video_unregister_device(&vpfe_dev
->video_dev
);
2014 static int vpfe_suspend(struct device
*dev
)
2019 static int vpfe_resume(struct device
*dev
)
2024 static const struct dev_pm_ops vpfe_dev_pm_ops
= {
2025 .suspend
= vpfe_suspend
,
2026 .resume
= vpfe_resume
,
2029 static struct platform_driver vpfe_driver
= {
2031 .name
= CAPTURE_DRV_NAME
,
2032 .pm
= &vpfe_dev_pm_ops
,
2034 .probe
= vpfe_probe
,
2035 .remove
= vpfe_remove
,
2038 module_platform_driver(vpfe_driver
);