2 * Copyright (C) 2009 Texas Instruments Inc
3 * Copyright (C) 2014 Lad, Prabhakar <prabhakar.csengg@gmail.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 * TODO : add support for VBI & HBI data service
20 * add static buffer allocation
23 #include <linux/module.h>
24 #include <linux/interrupt.h>
25 #include <linux/platform_device.h>
26 #include <linux/slab.h>
28 #include <media/v4l2-ioctl.h>
31 #include "vpif_capture.h"
33 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
34 MODULE_LICENSE("GPL");
35 MODULE_VERSION(VPIF_CAPTURE_VERSION
);
37 #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
38 #define vpif_dbg(level, debug, fmt, arg...) \
39 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
42 static u32 ch0_numbuffers
= 3;
43 static u32 ch1_numbuffers
= 3;
44 static u32 ch0_bufsize
= 1920 * 1080 * 2;
45 static u32 ch1_bufsize
= 720 * 576 * 2;
47 module_param(debug
, int, 0644);
48 module_param(ch0_numbuffers
, uint
, S_IRUGO
);
49 module_param(ch1_numbuffers
, uint
, S_IRUGO
);
50 module_param(ch0_bufsize
, uint
, S_IRUGO
);
51 module_param(ch1_bufsize
, uint
, S_IRUGO
);
53 MODULE_PARM_DESC(debug
, "Debug level 0-1");
54 MODULE_PARM_DESC(ch2_numbuffers
, "Channel0 buffer count (default:3)");
55 MODULE_PARM_DESC(ch3_numbuffers
, "Channel1 buffer count (default:3)");
56 MODULE_PARM_DESC(ch2_bufsize
, "Channel0 buffer size (default:1920 x 1080 x 2)");
57 MODULE_PARM_DESC(ch3_bufsize
, "Channel1 buffer size (default:720 x 576 x 2)");
59 static struct vpif_config_params config_params
= {
63 .min_bufsize
[0] = 720 * 480 * 2,
64 .min_bufsize
[1] = 720 * 480 * 2,
65 .channel_bufsize
[0] = 1920 * 1080 * 2,
66 .channel_bufsize
[1] = 720 * 576 * 2,
69 #define VPIF_DRIVER_NAME "vpif_capture"
71 /* global variables */
72 static struct vpif_device vpif_obj
= { {NULL
} };
73 static struct device
*vpif_dev
;
74 static void vpif_calculate_offsets(struct channel_obj
*ch
);
75 static void vpif_config_addr(struct channel_obj
*ch
, int muxmode
);
77 static u8 channel_first_int
[VPIF_NUMBER_OF_OBJECTS
][2] = { {1, 1} };
79 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
80 static int ycmux_mode
;
82 static inline struct vpif_cap_buffer
*to_vpif_buffer(struct vb2_buffer
*vb
)
84 return container_of(vb
, struct vpif_cap_buffer
, vb
);
88 * vpif_buffer_prepare : callback function for buffer prepare
89 * @vb: ptr to vb2_buffer
91 * This is the callback function for buffer prepare when vb2_qbuf()
92 * function is called. The buffer is prepared and user space virtual address
93 * or user address is converted into physical address
95 static int vpif_buffer_prepare(struct vb2_buffer
*vb
)
97 struct vb2_queue
*q
= vb
->vb2_queue
;
98 struct channel_obj
*ch
= vb2_get_drv_priv(q
);
99 struct common_obj
*common
;
102 vpif_dbg(2, debug
, "vpif_buffer_prepare\n");
104 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
106 vb2_set_plane_payload(vb
, 0, common
->fmt
.fmt
.pix
.sizeimage
);
107 if (vb2_get_plane_payload(vb
, 0) > vb2_plane_size(vb
, 0))
110 vb
->v4l2_buf
.field
= common
->fmt
.fmt
.pix
.field
;
112 addr
= vb2_dma_contig_plane_dma_addr(vb
, 0);
113 if (!IS_ALIGNED((addr
+ common
->ytop_off
), 8) ||
114 !IS_ALIGNED((addr
+ common
->ybtm_off
), 8) ||
115 !IS_ALIGNED((addr
+ common
->ctop_off
), 8) ||
116 !IS_ALIGNED((addr
+ common
->cbtm_off
), 8)) {
117 vpif_dbg(1, debug
, "offset is not aligned\n");
125 * vpif_buffer_queue_setup : Callback function for buffer setup.
128 * @nbuffers: ptr to number of buffers requested by application
129 * @nplanes:: contains number of distinct video planes needed to hold a frame
130 * @sizes[]: contains the size (in bytes) of each plane.
131 * @alloc_ctxs: ptr to allocation context
133 * This callback function is called when reqbuf() is called to adjust
134 * the buffer count and buffer size
136 static int vpif_buffer_queue_setup(struct vb2_queue
*vq
,
137 const struct v4l2_format
*fmt
,
138 unsigned int *nbuffers
, unsigned int *nplanes
,
139 unsigned int sizes
[], void *alloc_ctxs
[])
141 struct channel_obj
*ch
= vb2_get_drv_priv(vq
);
142 struct common_obj
*common
;
144 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
146 vpif_dbg(2, debug
, "vpif_buffer_setup\n");
148 if (fmt
&& fmt
->fmt
.pix
.sizeimage
< common
->fmt
.fmt
.pix
.sizeimage
)
151 if (vq
->num_buffers
+ *nbuffers
< 3)
152 *nbuffers
= 3 - vq
->num_buffers
;
155 sizes
[0] = fmt
? fmt
->fmt
.pix
.sizeimage
: common
->fmt
.fmt
.pix
.sizeimage
;
156 alloc_ctxs
[0] = common
->alloc_ctx
;
158 /* Calculate the offset for Y and C data in the buffer */
159 vpif_calculate_offsets(ch
);
165 * vpif_buffer_queue : Callback function to add buffer to DMA queue
166 * @vb: ptr to vb2_buffer
168 static void vpif_buffer_queue(struct vb2_buffer
*vb
)
170 struct channel_obj
*ch
= vb2_get_drv_priv(vb
->vb2_queue
);
171 struct vpif_cap_buffer
*buf
= to_vpif_buffer(vb
);
172 struct common_obj
*common
;
175 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
177 vpif_dbg(2, debug
, "vpif_buffer_queue\n");
179 spin_lock_irqsave(&common
->irqlock
, flags
);
180 /* add the buffer to the DMA queue */
181 list_add_tail(&buf
->list
, &common
->dma_queue
);
182 spin_unlock_irqrestore(&common
->irqlock
, flags
);
186 * vpif_start_streaming : Starts the DMA engine for streaming
187 * @vb: ptr to vb2_buffer
188 * @count: number of buffers
190 static int vpif_start_streaming(struct vb2_queue
*vq
, unsigned int count
)
192 struct vpif_capture_config
*vpif_config_data
=
193 vpif_dev
->platform_data
;
194 struct channel_obj
*ch
= vb2_get_drv_priv(vq
);
195 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
196 struct vpif_params
*vpif
= &ch
->vpifparams
;
197 struct vpif_cap_buffer
*buf
, *tmp
;
198 unsigned long addr
, flags
;
201 spin_lock_irqsave(&common
->irqlock
, flags
);
203 /* Initialize field_id */
206 /* configure 1 or 2 channel mode */
207 if (vpif_config_data
->setup_input_channel_mode
) {
208 ret
= vpif_config_data
->
209 setup_input_channel_mode(vpif
->std_info
.ycmux_mode
);
211 vpif_dbg(1, debug
, "can't set vpif channel mode\n");
216 ret
= v4l2_subdev_call(ch
->sd
, video
, s_stream
, 1);
217 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
) {
218 vpif_dbg(1, debug
, "stream on failed in subdev\n");
222 /* Call vpif_set_params function to set the parameters and addresses */
223 ret
= vpif_set_video_params(vpif
, ch
->channel_id
);
225 vpif_dbg(1, debug
, "can't set video params\n");
230 vpif_config_addr(ch
, ret
);
232 /* Get the next frame from the buffer queue */
233 common
->cur_frm
= common
->next_frm
= list_entry(common
->dma_queue
.next
,
234 struct vpif_cap_buffer
, list
);
235 /* Remove buffer from the buffer queue */
236 list_del(&common
->cur_frm
->list
);
237 spin_unlock_irqrestore(&common
->irqlock
, flags
);
238 /* Mark state of the current frame to active */
239 common
->cur_frm
->vb
.state
= VB2_BUF_STATE_ACTIVE
;
241 addr
= vb2_dma_contig_plane_dma_addr(&common
->cur_frm
->vb
, 0);
243 common
->set_addr(addr
+ common
->ytop_off
,
244 addr
+ common
->ybtm_off
,
245 addr
+ common
->ctop_off
,
246 addr
+ common
->cbtm_off
);
249 * Set interrupt for both the fields in VPIF Register enable channel in
252 channel_first_int
[VPIF_VIDEO_INDEX
][ch
->channel_id
] = 1;
253 if (VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) {
254 channel0_intr_assert();
255 channel0_intr_enable(1);
258 if (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
||
260 channel1_intr_assert();
261 channel1_intr_enable(1);
268 list_for_each_entry_safe(buf
, tmp
, &common
->dma_queue
, list
) {
269 list_del(&buf
->list
);
270 vb2_buffer_done(&buf
->vb
, VB2_BUF_STATE_QUEUED
);
277 * vpif_stop_streaming : Stop the DMA engine
278 * @vq: ptr to vb2_queue
280 * This callback stops the DMA engine and any remaining buffers
281 * in the DMA queue are released.
283 static void vpif_stop_streaming(struct vb2_queue
*vq
)
285 struct channel_obj
*ch
= vb2_get_drv_priv(vq
);
286 struct common_obj
*common
;
290 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
292 /* Disable channel as per its device type and channel id */
293 if (VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) {
295 channel0_intr_enable(0);
297 if (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
||
300 channel1_intr_enable(0);
305 ret
= v4l2_subdev_call(ch
->sd
, video
, s_stream
, 0);
306 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
)
307 vpif_dbg(1, debug
, "stream off failed in subdev\n");
309 /* release all active buffers */
310 spin_lock_irqsave(&common
->irqlock
, flags
);
311 if (common
->cur_frm
== common
->next_frm
) {
312 vb2_buffer_done(&common
->cur_frm
->vb
, VB2_BUF_STATE_ERROR
);
314 if (common
->cur_frm
!= NULL
)
315 vb2_buffer_done(&common
->cur_frm
->vb
,
316 VB2_BUF_STATE_ERROR
);
317 if (common
->next_frm
!= NULL
)
318 vb2_buffer_done(&common
->next_frm
->vb
,
319 VB2_BUF_STATE_ERROR
);
322 while (!list_empty(&common
->dma_queue
)) {
323 common
->next_frm
= list_entry(common
->dma_queue
.next
,
324 struct vpif_cap_buffer
, list
);
325 list_del(&common
->next_frm
->list
);
326 vb2_buffer_done(&common
->next_frm
->vb
, VB2_BUF_STATE_ERROR
);
328 spin_unlock_irqrestore(&common
->irqlock
, flags
);
331 static struct vb2_ops video_qops
= {
332 .queue_setup
= vpif_buffer_queue_setup
,
333 .buf_prepare
= vpif_buffer_prepare
,
334 .start_streaming
= vpif_start_streaming
,
335 .stop_streaming
= vpif_stop_streaming
,
336 .buf_queue
= vpif_buffer_queue
,
340 * vpif_process_buffer_complete: process a completed buffer
341 * @common: ptr to common channel object
343 * This function time stamp the buffer and mark it as DONE. It also
344 * wake up any process waiting on the QUEUE and set the next buffer
347 static void vpif_process_buffer_complete(struct common_obj
*common
)
349 v4l2_get_timestamp(&common
->cur_frm
->vb
.v4l2_buf
.timestamp
);
350 vb2_buffer_done(&common
->cur_frm
->vb
,
352 /* Make curFrm pointing to nextFrm */
353 common
->cur_frm
= common
->next_frm
;
357 * vpif_schedule_next_buffer: set next buffer address for capture
358 * @common : ptr to common channel object
360 * This function will get next buffer from the dma queue and
361 * set the buffer address in the vpif register for capture.
362 * the buffer is marked active
364 static void vpif_schedule_next_buffer(struct common_obj
*common
)
366 unsigned long addr
= 0;
368 spin_lock(&common
->irqlock
);
369 common
->next_frm
= list_entry(common
->dma_queue
.next
,
370 struct vpif_cap_buffer
, list
);
371 /* Remove that buffer from the buffer queue */
372 list_del(&common
->next_frm
->list
);
373 spin_unlock(&common
->irqlock
);
374 common
->next_frm
->vb
.state
= VB2_BUF_STATE_ACTIVE
;
375 addr
= vb2_dma_contig_plane_dma_addr(&common
->next_frm
->vb
, 0);
377 /* Set top and bottom field addresses in VPIF registers */
378 common
->set_addr(addr
+ common
->ytop_off
,
379 addr
+ common
->ybtm_off
,
380 addr
+ common
->ctop_off
,
381 addr
+ common
->cbtm_off
);
385 * vpif_channel_isr : ISR handler for vpif capture
387 * @dev_id: dev_id ptr
389 * It changes status of the captured buffer, takes next buffer from the queue
390 * and sets its address in VPIF registers
392 static irqreturn_t
vpif_channel_isr(int irq
, void *dev_id
)
394 struct vpif_device
*dev
= &vpif_obj
;
395 struct common_obj
*common
;
396 struct channel_obj
*ch
;
397 enum v4l2_field field
;
401 channel_id
= *(int *)(dev_id
);
402 if (!vpif_intr_status(channel_id
))
405 ch
= dev
->dev
[channel_id
];
407 field
= ch
->common
[VPIF_VIDEO_INDEX
].fmt
.fmt
.pix
.field
;
409 for (i
= 0; i
< VPIF_NUMBER_OF_OBJECTS
; i
++) {
410 common
= &ch
->common
[i
];
411 /* skip If streaming is not started in this channel */
412 /* Check the field format */
413 if (1 == ch
->vpifparams
.std_info
.frm_fmt
) {
414 /* Progressive mode */
415 spin_lock(&common
->irqlock
);
416 if (list_empty(&common
->dma_queue
)) {
417 spin_unlock(&common
->irqlock
);
420 spin_unlock(&common
->irqlock
);
422 if (!channel_first_int
[i
][channel_id
])
423 vpif_process_buffer_complete(common
);
425 channel_first_int
[i
][channel_id
] = 0;
427 vpif_schedule_next_buffer(common
);
430 channel_first_int
[i
][channel_id
] = 0;
433 * Interlaced mode. If it is first interrupt, ignore
436 if (channel_first_int
[i
][channel_id
]) {
437 channel_first_int
[i
][channel_id
] = 0;
442 /* Get field id from VPIF registers */
443 fid
= vpif_channel_getfid(ch
->channel_id
);
444 if (fid
!= ch
->field_id
) {
446 * If field id does not match stored
447 * field id, make them in sync
454 /* device field id and local field id are in sync */
456 /* this is even field */
457 if (common
->cur_frm
== common
->next_frm
)
460 /* mark the current buffer as done */
461 vpif_process_buffer_complete(common
);
462 } else if (1 == fid
) {
464 spin_lock(&common
->irqlock
);
465 if (list_empty(&common
->dma_queue
) ||
466 (common
->cur_frm
!= common
->next_frm
)) {
467 spin_unlock(&common
->irqlock
);
470 spin_unlock(&common
->irqlock
);
472 vpif_schedule_next_buffer(common
);
480 * vpif_update_std_info() - update standard related info
481 * @ch: ptr to channel object
483 * For a given standard selected by application, update values
484 * in the device data structures
486 static int vpif_update_std_info(struct channel_obj
*ch
)
488 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
489 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
490 const struct vpif_channel_config_params
*config
;
491 struct vpif_channel_config_params
*std_info
= &vpifparams
->std_info
;
492 struct video_obj
*vid_ch
= &ch
->video
;
495 vpif_dbg(2, debug
, "vpif_update_std_info\n");
497 for (index
= 0; index
< vpif_ch_params_count
; index
++) {
498 config
= &vpif_ch_params
[index
];
499 if (config
->hd_sd
== 0) {
500 vpif_dbg(2, debug
, "SD format\n");
501 if (config
->stdid
& vid_ch
->stdid
) {
502 memcpy(std_info
, config
, sizeof(*config
));
506 vpif_dbg(2, debug
, "HD format\n");
507 if (!memcmp(&config
->dv_timings
, &vid_ch
->dv_timings
,
508 sizeof(vid_ch
->dv_timings
))) {
509 memcpy(std_info
, config
, sizeof(*config
));
515 /* standard not found */
516 if (index
== vpif_ch_params_count
)
519 common
->fmt
.fmt
.pix
.width
= std_info
->width
;
520 common
->width
= std_info
->width
;
521 common
->fmt
.fmt
.pix
.height
= std_info
->height
;
522 common
->height
= std_info
->height
;
523 common
->fmt
.fmt
.pix
.bytesperline
= std_info
->width
;
524 vpifparams
->video_params
.hpitch
= std_info
->width
;
525 vpifparams
->video_params
.storage_mode
= std_info
->frm_fmt
;
531 * vpif_calculate_offsets : This function calculates buffers offsets
532 * @ch : ptr to channel object
534 * This function calculates buffer offsets for Y and C in the top and
537 static void vpif_calculate_offsets(struct channel_obj
*ch
)
539 unsigned int hpitch
, vpitch
, sizeimage
;
540 struct video_obj
*vid_ch
= &(ch
->video
);
541 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
542 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
543 enum v4l2_field field
= common
->fmt
.fmt
.pix
.field
;
545 vpif_dbg(2, debug
, "vpif_calculate_offsets\n");
547 if (V4L2_FIELD_ANY
== field
) {
548 if (vpifparams
->std_info
.frm_fmt
)
549 vid_ch
->buf_field
= V4L2_FIELD_NONE
;
551 vid_ch
->buf_field
= V4L2_FIELD_INTERLACED
;
553 vid_ch
->buf_field
= common
->fmt
.fmt
.pix
.field
;
555 sizeimage
= common
->fmt
.fmt
.pix
.sizeimage
;
557 hpitch
= common
->fmt
.fmt
.pix
.bytesperline
;
558 vpitch
= sizeimage
/ (hpitch
* 2);
560 if ((V4L2_FIELD_NONE
== vid_ch
->buf_field
) ||
561 (V4L2_FIELD_INTERLACED
== vid_ch
->buf_field
)) {
562 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
563 common
->ytop_off
= 0;
564 common
->ybtm_off
= hpitch
;
565 common
->ctop_off
= sizeimage
/ 2;
566 common
->cbtm_off
= sizeimage
/ 2 + hpitch
;
567 } else if (V4L2_FIELD_SEQ_TB
== vid_ch
->buf_field
) {
568 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
569 common
->ytop_off
= 0;
570 common
->ybtm_off
= sizeimage
/ 4;
571 common
->ctop_off
= sizeimage
/ 2;
572 common
->cbtm_off
= common
->ctop_off
+ sizeimage
/ 4;
573 } else if (V4L2_FIELD_SEQ_BT
== vid_ch
->buf_field
) {
574 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
575 common
->ybtm_off
= 0;
576 common
->ytop_off
= sizeimage
/ 4;
577 common
->cbtm_off
= sizeimage
/ 2;
578 common
->ctop_off
= common
->cbtm_off
+ sizeimage
/ 4;
580 if ((V4L2_FIELD_NONE
== vid_ch
->buf_field
) ||
581 (V4L2_FIELD_INTERLACED
== vid_ch
->buf_field
))
582 vpifparams
->video_params
.storage_mode
= 1;
584 vpifparams
->video_params
.storage_mode
= 0;
586 if (1 == vpifparams
->std_info
.frm_fmt
)
587 vpifparams
->video_params
.hpitch
=
588 common
->fmt
.fmt
.pix
.bytesperline
;
590 if ((field
== V4L2_FIELD_ANY
)
591 || (field
== V4L2_FIELD_INTERLACED
))
592 vpifparams
->video_params
.hpitch
=
593 common
->fmt
.fmt
.pix
.bytesperline
* 2;
595 vpifparams
->video_params
.hpitch
=
596 common
->fmt
.fmt
.pix
.bytesperline
;
599 ch
->vpifparams
.video_params
.stdid
= vpifparams
->std_info
.stdid
;
603 * vpif_config_format: configure default frame format in the device
604 * ch : ptr to channel object
606 static void vpif_config_format(struct channel_obj
*ch
)
608 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
610 vpif_dbg(2, debug
, "vpif_config_format\n");
612 common
->fmt
.fmt
.pix
.field
= V4L2_FIELD_ANY
;
613 common
->fmt
.fmt
.pix
.sizeimage
614 = config_params
.channel_bufsize
[ch
->channel_id
];
616 if (ch
->vpifparams
.iface
.if_type
== VPIF_IF_RAW_BAYER
)
617 common
->fmt
.fmt
.pix
.pixelformat
= V4L2_PIX_FMT_SBGGR8
;
619 common
->fmt
.fmt
.pix
.pixelformat
= V4L2_PIX_FMT_YUV422P
;
620 common
->fmt
.type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
624 * vpif_get_default_field() - Get default field type based on interface
625 * @vpif_params - ptr to vpif params
627 static inline enum v4l2_field
vpif_get_default_field(
628 struct vpif_interface
*iface
)
630 return (iface
->if_type
== VPIF_IF_RAW_BAYER
) ? V4L2_FIELD_NONE
:
631 V4L2_FIELD_INTERLACED
;
635 * vpif_check_format() - check given pixel format for compatibility
637 * @pixfmt - Given pixel format
638 * @update - update the values as per hardware requirement
640 * Check the application pixel format for S_FMT and update the input
641 * values as per hardware limits for TRY_FMT. The default pixel and
642 * field format is selected based on interface type.
644 static int vpif_check_format(struct channel_obj
*ch
,
645 struct v4l2_pix_format
*pixfmt
,
648 struct common_obj
*common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
649 struct vpif_params
*vpif_params
= &ch
->vpifparams
;
650 enum v4l2_field field
= pixfmt
->field
;
651 u32 sizeimage
, hpitch
, vpitch
;
654 vpif_dbg(2, debug
, "vpif_check_format\n");
656 * first check for the pixel format. If if_type is Raw bayer,
657 * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only
658 * V4L2_PIX_FMT_YUV422P is supported
660 if (vpif_params
->iface
.if_type
== VPIF_IF_RAW_BAYER
) {
661 if (pixfmt
->pixelformat
!= V4L2_PIX_FMT_SBGGR8
) {
663 vpif_dbg(2, debug
, "invalid pix format\n");
666 pixfmt
->pixelformat
= V4L2_PIX_FMT_SBGGR8
;
669 if (pixfmt
->pixelformat
!= V4L2_PIX_FMT_YUV422P
) {
671 vpif_dbg(2, debug
, "invalid pixel format\n");
674 pixfmt
->pixelformat
= V4L2_PIX_FMT_YUV422P
;
678 if (!(VPIF_VALID_FIELD(field
))) {
680 vpif_dbg(2, debug
, "invalid field format\n");
684 * By default use FIELD_NONE for RAW Bayer capture
685 * and FIELD_INTERLACED for other interfaces
687 field
= vpif_get_default_field(&vpif_params
->iface
);
688 } else if (field
== V4L2_FIELD_ANY
)
689 /* unsupported field. Use default */
690 field
= vpif_get_default_field(&vpif_params
->iface
);
692 /* validate the hpitch */
693 hpitch
= pixfmt
->bytesperline
;
694 if (hpitch
< vpif_params
->std_info
.width
) {
696 vpif_dbg(2, debug
, "invalid hpitch\n");
699 hpitch
= vpif_params
->std_info
.width
;
702 sizeimage
= pixfmt
->sizeimage
;
704 vpitch
= sizeimage
/ (hpitch
* 2);
706 /* validate the vpitch */
707 if (vpitch
< vpif_params
->std_info
.height
) {
709 vpif_dbg(2, debug
, "Invalid vpitch\n");
712 vpitch
= vpif_params
->std_info
.height
;
715 /* Check for 8 byte alignment */
716 if (!ALIGN(hpitch
, 8)) {
718 vpif_dbg(2, debug
, "invalid pitch alignment\n");
721 /* adjust to next 8 byte boundary */
722 hpitch
= (((hpitch
+ 7) / 8) * 8);
724 /* if update is set, modify the bytesperline and sizeimage */
726 pixfmt
->bytesperline
= hpitch
;
727 pixfmt
->sizeimage
= hpitch
* vpitch
* 2;
730 * Image width and height is always based on current standard width and
733 pixfmt
->width
= common
->fmt
.fmt
.pix
.width
;
734 pixfmt
->height
= common
->fmt
.fmt
.pix
.height
;
741 * vpif_config_addr() - function to configure buffer address in vpif
743 * @muxmode - channel mux mode
745 static void vpif_config_addr(struct channel_obj
*ch
, int muxmode
)
747 struct common_obj
*common
;
749 vpif_dbg(2, debug
, "vpif_config_addr\n");
751 common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
753 if (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)
754 common
->set_addr
= ch1_set_videobuf_addr
;
755 else if (2 == muxmode
)
756 common
->set_addr
= ch0_set_videobuf_addr_yc_nmux
;
758 common
->set_addr
= ch0_set_videobuf_addr
;
762 * vpif_input_to_subdev() - Maps input to sub device
763 * @vpif_cfg - global config ptr
764 * @chan_cfg - channel config ptr
765 * @input_index - Given input index from application
767 * lookup the sub device information for a given input index.
768 * we report all the inputs to application. inputs table also
769 * has sub device name for the each input
771 static int vpif_input_to_subdev(
772 struct vpif_capture_config
*vpif_cfg
,
773 struct vpif_capture_chan_config
*chan_cfg
,
776 struct vpif_subdev_info
*subdev_info
;
777 const char *subdev_name
;
780 vpif_dbg(2, debug
, "vpif_input_to_subdev\n");
782 subdev_name
= chan_cfg
->inputs
[input_index
].subdev_name
;
783 if (subdev_name
== NULL
)
786 /* loop through the sub device list to get the sub device info */
787 for (i
= 0; i
< vpif_cfg
->subdev_count
; i
++) {
788 subdev_info
= &vpif_cfg
->subdev_info
[i
];
789 if (!strcmp(subdev_info
->name
, subdev_name
))
796 * vpif_set_input() - Select an input
797 * @vpif_cfg - global config ptr
799 * @_index - Given input index from application
801 * Select the given input.
803 static int vpif_set_input(
804 struct vpif_capture_config
*vpif_cfg
,
805 struct channel_obj
*ch
,
808 struct vpif_capture_chan_config
*chan_cfg
=
809 &vpif_cfg
->chan_config
[ch
->channel_id
];
810 struct vpif_subdev_info
*subdev_info
= NULL
;
811 struct v4l2_subdev
*sd
= NULL
;
812 u32 input
= 0, output
= 0;
816 sd_index
= vpif_input_to_subdev(vpif_cfg
, chan_cfg
, index
);
818 sd
= vpif_obj
.sd
[sd_index
];
819 subdev_info
= &vpif_cfg
->subdev_info
[sd_index
];
822 /* first setup input path from sub device to vpif */
823 if (sd
&& vpif_cfg
->setup_input_path
) {
824 ret
= vpif_cfg
->setup_input_path(ch
->channel_id
,
827 vpif_dbg(1, debug
, "couldn't setup input path for the" \
828 " sub device %s, for input index %d\n",
829 subdev_info
->name
, index
);
835 input
= chan_cfg
->inputs
[index
].input_route
;
836 output
= chan_cfg
->inputs
[index
].output_route
;
837 ret
= v4l2_subdev_call(sd
, video
, s_routing
,
839 if (ret
< 0 && ret
!= -ENOIOCTLCMD
) {
840 vpif_dbg(1, debug
, "Failed to set input\n");
844 ch
->input_idx
= index
;
846 /* copy interface parameters to vpif */
847 ch
->vpifparams
.iface
= chan_cfg
->vpif_if
;
849 /* update tvnorms from the sub device input info */
850 ch
->video_dev
->tvnorms
= chan_cfg
->inputs
[index
].input
.std
;
855 * vpif_querystd() - querystd handler
858 * @std_id: ptr to std id
860 * This function is called to detect standard at the selected input
862 static int vpif_querystd(struct file
*file
, void *priv
, v4l2_std_id
*std_id
)
864 struct video_device
*vdev
= video_devdata(file
);
865 struct channel_obj
*ch
= video_get_drvdata(vdev
);
868 vpif_dbg(2, debug
, "vpif_querystd\n");
870 /* Call querystd function of decoder device */
871 ret
= v4l2_subdev_call(ch
->sd
, video
, querystd
, std_id
);
873 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
876 vpif_dbg(1, debug
, "Failed to query standard for sub devices\n");
884 * vpif_g_std() - get STD handler
887 * @std_id: ptr to std id
889 static int vpif_g_std(struct file
*file
, void *priv
, v4l2_std_id
*std
)
891 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
892 struct video_device
*vdev
= video_devdata(file
);
893 struct channel_obj
*ch
= video_get_drvdata(vdev
);
894 struct vpif_capture_chan_config
*chan_cfg
;
895 struct v4l2_input input
;
897 vpif_dbg(2, debug
, "vpif_g_std\n");
899 if (config
->chan_config
[ch
->channel_id
].inputs
== NULL
)
902 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
903 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
904 if (input
.capabilities
!= V4L2_IN_CAP_STD
)
907 *std
= ch
->video
.stdid
;
912 * vpif_s_std() - set STD handler
915 * @std_id: ptr to std id
917 static int vpif_s_std(struct file
*file
, void *priv
, v4l2_std_id std_id
)
919 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
920 struct video_device
*vdev
= video_devdata(file
);
921 struct channel_obj
*ch
= video_get_drvdata(vdev
);
922 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
923 struct vpif_capture_chan_config
*chan_cfg
;
924 struct v4l2_input input
;
927 vpif_dbg(2, debug
, "vpif_s_std\n");
929 if (config
->chan_config
[ch
->channel_id
].inputs
== NULL
)
932 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
933 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
934 if (input
.capabilities
!= V4L2_IN_CAP_STD
)
937 if (vb2_is_busy(&common
->buffer_queue
))
940 /* Call encoder subdevice function to set the standard */
941 ch
->video
.stdid
= std_id
;
942 memset(&ch
->video
.dv_timings
, 0, sizeof(ch
->video
.dv_timings
));
944 /* Get the information about the standard */
945 if (vpif_update_std_info(ch
)) {
946 vpif_err("Error getting the standard info\n");
950 /* Configure the default format information */
951 vpif_config_format(ch
);
953 /* set standard in the sub device */
954 ret
= v4l2_subdev_call(ch
->sd
, video
, s_std
, std_id
);
955 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
) {
956 vpif_dbg(1, debug
, "Failed to set standard for sub devices\n");
963 * vpif_enum_input() - ENUMINPUT handler
966 * @input: ptr to input structure
968 static int vpif_enum_input(struct file
*file
, void *priv
,
969 struct v4l2_input
*input
)
972 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
973 struct video_device
*vdev
= video_devdata(file
);
974 struct channel_obj
*ch
= video_get_drvdata(vdev
);
975 struct vpif_capture_chan_config
*chan_cfg
;
977 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
979 if (input
->index
>= chan_cfg
->input_count
) {
980 vpif_dbg(1, debug
, "Invalid input index\n");
984 memcpy(input
, &chan_cfg
->inputs
[input
->index
].input
,
990 * vpif_g_input() - Get INPUT handler
993 * @index: ptr to input index
995 static int vpif_g_input(struct file
*file
, void *priv
, unsigned int *index
)
997 struct video_device
*vdev
= video_devdata(file
);
998 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1000 *index
= ch
->input_idx
;
1005 * vpif_s_input() - Set INPUT handler
1007 * @priv: file handle
1008 * @index: input index
1010 static int vpif_s_input(struct file
*file
, void *priv
, unsigned int index
)
1012 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1013 struct video_device
*vdev
= video_devdata(file
);
1014 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1015 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1016 struct vpif_capture_chan_config
*chan_cfg
;
1018 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1020 if (index
>= chan_cfg
->input_count
)
1023 if (vb2_is_busy(&common
->buffer_queue
))
1026 return vpif_set_input(config
, ch
, index
);
1030 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
1032 * @priv: file handle
1033 * @index: input index
1035 static int vpif_enum_fmt_vid_cap(struct file
*file
, void *priv
,
1036 struct v4l2_fmtdesc
*fmt
)
1038 struct video_device
*vdev
= video_devdata(file
);
1039 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1041 if (fmt
->index
!= 0) {
1042 vpif_dbg(1, debug
, "Invalid format index\n");
1046 /* Fill in the information about format */
1047 if (ch
->vpifparams
.iface
.if_type
== VPIF_IF_RAW_BAYER
) {
1048 fmt
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1049 strcpy(fmt
->description
, "Raw Mode -Bayer Pattern GrRBGb");
1050 fmt
->pixelformat
= V4L2_PIX_FMT_SBGGR8
;
1052 fmt
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1053 strcpy(fmt
->description
, "YCbCr4:2:2 YC Planar");
1054 fmt
->pixelformat
= V4L2_PIX_FMT_YUV422P
;
1060 * vpif_try_fmt_vid_cap() - TRY_FMT handler
1062 * @priv: file handle
1063 * @fmt: ptr to v4l2 format structure
1065 static int vpif_try_fmt_vid_cap(struct file
*file
, void *priv
,
1066 struct v4l2_format
*fmt
)
1068 struct video_device
*vdev
= video_devdata(file
);
1069 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1070 struct v4l2_pix_format
*pixfmt
= &fmt
->fmt
.pix
;
1072 return vpif_check_format(ch
, pixfmt
, 1);
1077 * vpif_g_fmt_vid_cap() - Set INPUT handler
1079 * @priv: file handle
1080 * @fmt: ptr to v4l2 format structure
1082 static int vpif_g_fmt_vid_cap(struct file
*file
, void *priv
,
1083 struct v4l2_format
*fmt
)
1085 struct video_device
*vdev
= video_devdata(file
);
1086 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1087 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1089 /* Check the validity of the buffer type */
1090 if (common
->fmt
.type
!= fmt
->type
)
1093 /* Fill in the information about format */
1099 * vpif_s_fmt_vid_cap() - Set FMT handler
1101 * @priv: file handle
1102 * @fmt: ptr to v4l2 format structure
1104 static int vpif_s_fmt_vid_cap(struct file
*file
, void *priv
,
1105 struct v4l2_format
*fmt
)
1107 struct video_device
*vdev
= video_devdata(file
);
1108 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1109 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1110 struct v4l2_pix_format
*pixfmt
;
1113 vpif_dbg(2, debug
, "%s\n", __func__
);
1115 if (vb2_is_busy(&common
->buffer_queue
))
1118 pixfmt
= &fmt
->fmt
.pix
;
1119 /* Check for valid field format */
1120 ret
= vpif_check_format(ch
, pixfmt
, 0);
1124 /* store the format in the channel object */
1130 * vpif_querycap() - QUERYCAP handler
1132 * @priv: file handle
1133 * @cap: ptr to v4l2_capability structure
1135 static int vpif_querycap(struct file
*file
, void *priv
,
1136 struct v4l2_capability
*cap
)
1138 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1140 cap
->device_caps
= V4L2_CAP_VIDEO_CAPTURE
| V4L2_CAP_STREAMING
;
1141 cap
->capabilities
= cap
->device_caps
| V4L2_CAP_DEVICE_CAPS
;
1142 strlcpy(cap
->driver
, VPIF_DRIVER_NAME
, sizeof(cap
->driver
));
1143 snprintf(cap
->bus_info
, sizeof(cap
->bus_info
), "platform:%s",
1144 dev_name(vpif_dev
));
1145 strlcpy(cap
->card
, config
->card_name
, sizeof(cap
->card
));
1151 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1153 * @priv: file handle
1154 * @timings: input timings
1157 vpif_enum_dv_timings(struct file
*file
, void *priv
,
1158 struct v4l2_enum_dv_timings
*timings
)
1160 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1161 struct video_device
*vdev
= video_devdata(file
);
1162 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1163 struct vpif_capture_chan_config
*chan_cfg
;
1164 struct v4l2_input input
;
1167 if (config
->chan_config
[ch
->channel_id
].inputs
== NULL
)
1170 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1171 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1172 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1177 ret
= v4l2_subdev_call(ch
->sd
, pad
, enum_dv_timings
, timings
);
1178 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
1185 * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1187 * @priv: file handle
1188 * @timings: input timings
1191 vpif_query_dv_timings(struct file
*file
, void *priv
,
1192 struct v4l2_dv_timings
*timings
)
1194 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1195 struct video_device
*vdev
= video_devdata(file
);
1196 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1197 struct vpif_capture_chan_config
*chan_cfg
;
1198 struct v4l2_input input
;
1201 if (config
->chan_config
[ch
->channel_id
].inputs
== NULL
)
1204 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1205 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1206 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1209 ret
= v4l2_subdev_call(ch
->sd
, video
, query_dv_timings
, timings
);
1210 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
1217 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1219 * @priv: file handle
1220 * @timings: digital video timings
1222 static int vpif_s_dv_timings(struct file
*file
, void *priv
,
1223 struct v4l2_dv_timings
*timings
)
1225 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1226 struct video_device
*vdev
= video_devdata(file
);
1227 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1228 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
1229 struct vpif_channel_config_params
*std_info
= &vpifparams
->std_info
;
1230 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1231 struct video_obj
*vid_ch
= &ch
->video
;
1232 struct v4l2_bt_timings
*bt
= &vid_ch
->dv_timings
.bt
;
1233 struct vpif_capture_chan_config
*chan_cfg
;
1234 struct v4l2_input input
;
1237 if (config
->chan_config
[ch
->channel_id
].inputs
== NULL
)
1240 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1241 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1242 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1245 if (timings
->type
!= V4L2_DV_BT_656_1120
) {
1246 vpif_dbg(2, debug
, "Timing type not defined\n");
1250 if (vb2_is_busy(&common
->buffer_queue
))
1253 /* Configure subdevice timings, if any */
1254 ret
= v4l2_subdev_call(ch
->sd
, video
, s_dv_timings
, timings
);
1255 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
1258 vpif_dbg(2, debug
, "Error setting custom DV timings\n");
1262 if (!(timings
->bt
.width
&& timings
->bt
.height
&&
1263 (timings
->bt
.hbackporch
||
1264 timings
->bt
.hfrontporch
||
1265 timings
->bt
.hsync
) &&
1266 timings
->bt
.vfrontporch
&&
1267 (timings
->bt
.vbackporch
||
1268 timings
->bt
.vsync
))) {
1269 vpif_dbg(2, debug
, "Timings for width, height, "
1270 "horizontal back porch, horizontal sync, "
1271 "horizontal front porch, vertical back porch, "
1272 "vertical sync and vertical back porch "
1273 "must be defined\n");
1277 vid_ch
->dv_timings
= *timings
;
1279 /* Configure video port timings */
1281 std_info
->eav2sav
= V4L2_DV_BT_BLANKING_WIDTH(bt
) - 8;
1282 std_info
->sav2eav
= bt
->width
;
1285 std_info
->l3
= bt
->vsync
+ bt
->vbackporch
+ 1;
1287 std_info
->vsize
= V4L2_DV_BT_FRAME_HEIGHT(bt
);
1288 if (bt
->interlaced
) {
1289 if (bt
->il_vbackporch
|| bt
->il_vfrontporch
|| bt
->il_vsync
) {
1290 std_info
->l5
= std_info
->vsize
/2 -
1291 (bt
->vfrontporch
- 1);
1292 std_info
->l7
= std_info
->vsize
/2 + 1;
1293 std_info
->l9
= std_info
->l7
+ bt
->il_vsync
+
1294 bt
->il_vbackporch
+ 1;
1295 std_info
->l11
= std_info
->vsize
-
1296 (bt
->il_vfrontporch
- 1);
1298 vpif_dbg(2, debug
, "Required timing values for "
1299 "interlaced BT format missing\n");
1303 std_info
->l5
= std_info
->vsize
- (bt
->vfrontporch
- 1);
1305 strncpy(std_info
->name
, "Custom timings BT656/1120", VPIF_MAX_NAME
);
1306 std_info
->width
= bt
->width
;
1307 std_info
->height
= bt
->height
;
1308 std_info
->frm_fmt
= bt
->interlaced
? 0 : 1;
1309 std_info
->ycmux_mode
= 0;
1310 std_info
->capture_format
= 0;
1311 std_info
->vbi_supported
= 0;
1312 std_info
->hd_sd
= 1;
1313 std_info
->stdid
= 0;
1320 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1322 * @priv: file handle
1323 * @timings: digital video timings
1325 static int vpif_g_dv_timings(struct file
*file
, void *priv
,
1326 struct v4l2_dv_timings
*timings
)
1328 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1329 struct video_device
*vdev
= video_devdata(file
);
1330 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1331 struct video_obj
*vid_ch
= &ch
->video
;
1332 struct vpif_capture_chan_config
*chan_cfg
;
1333 struct v4l2_input input
;
1335 if (config
->chan_config
[ch
->channel_id
].inputs
== NULL
)
1338 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1339 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1340 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1343 *timings
= vid_ch
->dv_timings
;
1349 * vpif_log_status() - Status information
1351 * @priv: file handle
1355 static int vpif_log_status(struct file
*filep
, void *priv
)
1357 /* status for sub devices */
1358 v4l2_device_call_all(&vpif_obj
.v4l2_dev
, 0, core
, log_status
);
1363 /* vpif capture ioctl operations */
1364 static const struct v4l2_ioctl_ops vpif_ioctl_ops
= {
1365 .vidioc_querycap
= vpif_querycap
,
1366 .vidioc_enum_fmt_vid_cap
= vpif_enum_fmt_vid_cap
,
1367 .vidioc_g_fmt_vid_cap
= vpif_g_fmt_vid_cap
,
1368 .vidioc_s_fmt_vid_cap
= vpif_s_fmt_vid_cap
,
1369 .vidioc_try_fmt_vid_cap
= vpif_try_fmt_vid_cap
,
1371 .vidioc_enum_input
= vpif_enum_input
,
1372 .vidioc_s_input
= vpif_s_input
,
1373 .vidioc_g_input
= vpif_g_input
,
1375 .vidioc_reqbufs
= vb2_ioctl_reqbufs
,
1376 .vidioc_create_bufs
= vb2_ioctl_create_bufs
,
1377 .vidioc_querybuf
= vb2_ioctl_querybuf
,
1378 .vidioc_qbuf
= vb2_ioctl_qbuf
,
1379 .vidioc_dqbuf
= vb2_ioctl_dqbuf
,
1380 .vidioc_expbuf
= vb2_ioctl_expbuf
,
1381 .vidioc_streamon
= vb2_ioctl_streamon
,
1382 .vidioc_streamoff
= vb2_ioctl_streamoff
,
1384 .vidioc_querystd
= vpif_querystd
,
1385 .vidioc_s_std
= vpif_s_std
,
1386 .vidioc_g_std
= vpif_g_std
,
1388 .vidioc_enum_dv_timings
= vpif_enum_dv_timings
,
1389 .vidioc_query_dv_timings
= vpif_query_dv_timings
,
1390 .vidioc_s_dv_timings
= vpif_s_dv_timings
,
1391 .vidioc_g_dv_timings
= vpif_g_dv_timings
,
1393 .vidioc_log_status
= vpif_log_status
,
1396 /* vpif file operations */
1397 static struct v4l2_file_operations vpif_fops
= {
1398 .owner
= THIS_MODULE
,
1399 .open
= v4l2_fh_open
,
1400 .release
= vb2_fop_release
,
1401 .unlocked_ioctl
= video_ioctl2
,
1402 .mmap
= vb2_fop_mmap
,
1403 .poll
= vb2_fop_poll
1407 * initialize_vpif() - Initialize vpif data structures
1409 * Allocate memory for data structures and initialize them
1411 static int initialize_vpif(void)
1414 int free_channel_objects_index
;
1416 /* Default number of buffers should be 3 */
1417 if ((ch0_numbuffers
> 0) &&
1418 (ch0_numbuffers
< config_params
.min_numbuffers
))
1419 ch0_numbuffers
= config_params
.min_numbuffers
;
1420 if ((ch1_numbuffers
> 0) &&
1421 (ch1_numbuffers
< config_params
.min_numbuffers
))
1422 ch1_numbuffers
= config_params
.min_numbuffers
;
1424 /* Set buffer size to min buffers size if it is invalid */
1425 if (ch0_bufsize
< config_params
.min_bufsize
[VPIF_CHANNEL0_VIDEO
])
1427 config_params
.min_bufsize
[VPIF_CHANNEL0_VIDEO
];
1428 if (ch1_bufsize
< config_params
.min_bufsize
[VPIF_CHANNEL1_VIDEO
])
1430 config_params
.min_bufsize
[VPIF_CHANNEL1_VIDEO
];
1432 config_params
.numbuffers
[VPIF_CHANNEL0_VIDEO
] = ch0_numbuffers
;
1433 config_params
.numbuffers
[VPIF_CHANNEL1_VIDEO
] = ch1_numbuffers
;
1434 if (ch0_numbuffers
) {
1435 config_params
.channel_bufsize
[VPIF_CHANNEL0_VIDEO
]
1438 if (ch1_numbuffers
) {
1439 config_params
.channel_bufsize
[VPIF_CHANNEL1_VIDEO
]
1443 /* Allocate memory for six channel objects */
1444 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1446 kzalloc(sizeof(*vpif_obj
.dev
[i
]), GFP_KERNEL
);
1447 /* If memory allocation fails, return error */
1448 if (!vpif_obj
.dev
[i
]) {
1449 free_channel_objects_index
= i
;
1451 goto vpif_init_free_channel_objects
;
1456 vpif_init_free_channel_objects
:
1457 for (j
= 0; j
< free_channel_objects_index
; j
++)
1458 kfree(vpif_obj
.dev
[j
]);
1462 static int vpif_async_bound(struct v4l2_async_notifier
*notifier
,
1463 struct v4l2_subdev
*subdev
,
1464 struct v4l2_async_subdev
*asd
)
1468 for (i
= 0; i
< vpif_obj
.config
->subdev_count
; i
++)
1469 if (!strcmp(vpif_obj
.config
->subdev_info
[i
].name
,
1471 vpif_obj
.sd
[i
] = subdev
;
1478 static int vpif_probe_complete(void)
1480 struct common_obj
*common
;
1481 struct video_device
*vdev
;
1482 struct channel_obj
*ch
;
1483 struct vb2_queue
*q
;
1486 for (j
= 0; j
< VPIF_CAPTURE_MAX_DEVICES
; j
++) {
1487 ch
= vpif_obj
.dev
[j
];
1489 common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
1490 spin_lock_init(&common
->irqlock
);
1491 mutex_init(&common
->lock
);
1493 /* select input 0 */
1494 err
= vpif_set_input(vpif_obj
.config
, ch
, 0);
1498 /* Initialize vb2 queue */
1499 q
= &common
->buffer_queue
;
1500 q
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1501 q
->io_modes
= VB2_MMAP
| VB2_USERPTR
| VB2_DMABUF
;
1503 q
->ops
= &video_qops
;
1504 q
->mem_ops
= &vb2_dma_contig_memops
;
1505 q
->buf_struct_size
= sizeof(struct vpif_cap_buffer
);
1506 q
->timestamp_flags
= V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC
;
1507 q
->min_buffers_needed
= 1;
1508 q
->lock
= &common
->lock
;
1510 err
= vb2_queue_init(q
);
1512 vpif_err("vpif_capture: vb2_queue_init() failed\n");
1516 common
->alloc_ctx
= vb2_dma_contig_init_ctx(vpif_dev
);
1517 if (IS_ERR(common
->alloc_ctx
)) {
1518 vpif_err("Failed to get the context\n");
1519 err
= PTR_ERR(common
->alloc_ctx
);
1523 INIT_LIST_HEAD(&common
->dma_queue
);
1525 /* Initialize the video_device structure */
1526 vdev
= ch
->video_dev
;
1527 strlcpy(vdev
->name
, VPIF_DRIVER_NAME
, sizeof(vdev
->name
));
1528 vdev
->release
= video_device_release
;
1529 vdev
->fops
= &vpif_fops
;
1530 vdev
->ioctl_ops
= &vpif_ioctl_ops
;
1531 vdev
->v4l2_dev
= &vpif_obj
.v4l2_dev
;
1532 vdev
->vfl_dir
= VFL_DIR_RX
;
1534 vdev
->lock
= &common
->lock
;
1535 set_bit(V4L2_FL_USE_FH_PRIO
, &vdev
->flags
);
1536 video_set_drvdata(ch
->video_dev
, ch
);
1537 err
= video_register_device(vdev
,
1538 VFL_TYPE_GRABBER
, (j
? 1 : 0));
1543 v4l2_info(&vpif_obj
.v4l2_dev
, "VPIF capture driver initialized\n");
1547 for (k
= 0; k
< j
; k
++) {
1548 /* Get the pointer to the channel object */
1549 ch
= vpif_obj
.dev
[k
];
1550 common
= &ch
->common
[k
];
1551 vb2_dma_contig_cleanup_ctx(common
->alloc_ctx
);
1552 /* Unregister video device */
1553 video_unregister_device(ch
->video_dev
);
1556 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1557 ch
= vpif_obj
.dev
[i
];
1558 /* Note: does nothing if ch->video_dev == NULL */
1559 video_device_release(ch
->video_dev
);
1561 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
1566 static int vpif_async_complete(struct v4l2_async_notifier
*notifier
)
1568 return vpif_probe_complete();
1572 * vpif_probe : This function probes the vpif capture driver
1573 * @pdev: platform device pointer
1575 * This creates device entries by register itself to the V4L2 driver and
1576 * initializes fields of each channel objects
1578 static __init
int vpif_probe(struct platform_device
*pdev
)
1580 struct vpif_subdev_info
*subdevdata
;
1583 struct i2c_adapter
*i2c_adap
;
1584 struct channel_obj
*ch
;
1585 struct video_device
*vfd
;
1586 struct resource
*res
;
1589 vpif_dev
= &pdev
->dev
;
1591 err
= initialize_vpif();
1593 v4l2_err(vpif_dev
->driver
, "Error initializing vpif\n");
1597 err
= v4l2_device_register(vpif_dev
, &vpif_obj
.v4l2_dev
);
1599 v4l2_err(vpif_dev
->driver
, "Error registering v4l2 device\n");
1603 while ((res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, res_idx
))) {
1604 err
= devm_request_irq(&pdev
->dev
, res
->start
, vpif_channel_isr
,
1605 IRQF_SHARED
, VPIF_DRIVER_NAME
,
1606 (void *)(&vpif_obj
.dev
[res_idx
]->
1610 goto vpif_unregister
;
1615 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1616 /* Get the pointer to the channel object */
1617 ch
= vpif_obj
.dev
[i
];
1618 /* Allocate memory for video device */
1619 vfd
= video_device_alloc();
1621 for (j
= 0; j
< i
; j
++) {
1622 ch
= vpif_obj
.dev
[j
];
1623 video_device_release(ch
->video_dev
);
1626 goto vpif_unregister
;
1629 /* Set video_dev to the video device */
1630 ch
->video_dev
= vfd
;
1633 vpif_obj
.config
= pdev
->dev
.platform_data
;
1635 subdev_count
= vpif_obj
.config
->subdev_count
;
1636 vpif_obj
.sd
= kzalloc(sizeof(struct v4l2_subdev
*) * subdev_count
,
1638 if (vpif_obj
.sd
== NULL
) {
1639 vpif_err("unable to allocate memory for subdevice pointers\n");
1644 if (!vpif_obj
.config
->asd_sizes
) {
1645 i2c_adap
= i2c_get_adapter(1);
1646 for (i
= 0; i
< subdev_count
; i
++) {
1647 subdevdata
= &vpif_obj
.config
->subdev_info
[i
];
1649 v4l2_i2c_new_subdev_board(&vpif_obj
.v4l2_dev
,
1655 if (!vpif_obj
.sd
[i
]) {
1656 vpif_err("Error registering v4l2 subdevice\n");
1658 goto probe_subdev_out
;
1660 v4l2_info(&vpif_obj
.v4l2_dev
,
1661 "registered sub device %s\n",
1664 vpif_probe_complete();
1666 vpif_obj
.notifier
.subdevs
= vpif_obj
.config
->asd
;
1667 vpif_obj
.notifier
.num_subdevs
= vpif_obj
.config
->asd_sizes
[0];
1668 vpif_obj
.notifier
.bound
= vpif_async_bound
;
1669 vpif_obj
.notifier
.complete
= vpif_async_complete
;
1670 err
= v4l2_async_notifier_register(&vpif_obj
.v4l2_dev
,
1671 &vpif_obj
.notifier
);
1673 vpif_err("Error registering async notifier\n");
1675 goto probe_subdev_out
;
1682 /* free sub devices memory */
1686 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1687 ch
= vpif_obj
.dev
[i
];
1688 /* Note: does nothing if ch->video_dev == NULL */
1689 video_device_release(ch
->video_dev
);
1692 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
1698 * vpif_remove() - driver remove handler
1699 * @device: ptr to platform device structure
1701 * The vidoe device is unregistered
1703 static int vpif_remove(struct platform_device
*device
)
1705 struct common_obj
*common
;
1706 struct channel_obj
*ch
;
1709 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
1712 /* un-register device */
1713 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1714 /* Get the pointer to the channel object */
1715 ch
= vpif_obj
.dev
[i
];
1716 common
= &ch
->common
[i
];
1717 vb2_dma_contig_cleanup_ctx(common
->alloc_ctx
);
1718 /* Unregister video device */
1719 video_unregister_device(ch
->video_dev
);
1720 kfree(vpif_obj
.dev
[i
]);
1725 #ifdef CONFIG_PM_SLEEP
1727 * vpif_suspend: vpif device suspend
1729 static int vpif_suspend(struct device
*dev
)
1732 struct common_obj
*common
;
1733 struct channel_obj
*ch
;
1736 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1737 /* Get the pointer to the channel object */
1738 ch
= vpif_obj
.dev
[i
];
1739 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1741 if (!vb2_is_streaming(&common
->buffer_queue
))
1744 mutex_lock(&common
->lock
);
1745 /* Disable channel */
1746 if (ch
->channel_id
== VPIF_CHANNEL0_VIDEO
) {
1748 channel0_intr_enable(0);
1750 if (ch
->channel_id
== VPIF_CHANNEL1_VIDEO
||
1753 channel1_intr_enable(0);
1755 mutex_unlock(&common
->lock
);
1762 * vpif_resume: vpif device suspend
1764 static int vpif_resume(struct device
*dev
)
1766 struct common_obj
*common
;
1767 struct channel_obj
*ch
;
1770 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1771 /* Get the pointer to the channel object */
1772 ch
= vpif_obj
.dev
[i
];
1773 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1775 if (!vb2_is_streaming(&common
->buffer_queue
))
1778 mutex_lock(&common
->lock
);
1779 /* Enable channel */
1780 if (ch
->channel_id
== VPIF_CHANNEL0_VIDEO
) {
1782 channel0_intr_enable(1);
1784 if (ch
->channel_id
== VPIF_CHANNEL1_VIDEO
||
1787 channel1_intr_enable(1);
1789 mutex_unlock(&common
->lock
);
1796 static SIMPLE_DEV_PM_OPS(vpif_pm_ops
, vpif_suspend
, vpif_resume
);
1798 static __refdata
struct platform_driver vpif_driver
= {
1800 .name
= VPIF_DRIVER_NAME
,
1801 .owner
= THIS_MODULE
,
1804 .probe
= vpif_probe
,
1805 .remove
= vpif_remove
,
1808 module_platform_driver(vpif_driver
);