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 * TODO : add support for VBI & HBI data service
16 * add static buffer allocation
19 #include <linux/module.h>
20 #include <linux/interrupt.h>
21 #include <linux/of_graph.h>
22 #include <linux/platform_device.h>
23 #include <linux/slab.h>
25 #include <media/v4l2-fwnode.h>
26 #include <media/v4l2-ioctl.h>
27 #include <media/i2c/tvp514x.h>
28 #include <media/v4l2-mediabus.h>
30 #include <linux/videodev2.h>
33 #include "vpif_capture.h"
35 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
36 MODULE_LICENSE("GPL");
37 MODULE_VERSION(VPIF_CAPTURE_VERSION
);
39 #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
40 #define vpif_dbg(level, debug, fmt, arg...) \
41 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
45 module_param(debug
, int, 0644);
47 MODULE_PARM_DESC(debug
, "Debug level 0-1");
49 #define VPIF_DRIVER_NAME "vpif_capture"
50 MODULE_ALIAS("platform:" VPIF_DRIVER_NAME
);
52 /* global variables */
53 static struct vpif_device vpif_obj
= { {NULL
} };
54 static struct device
*vpif_dev
;
55 static void vpif_calculate_offsets(struct channel_obj
*ch
);
56 static void vpif_config_addr(struct channel_obj
*ch
, int muxmode
);
58 static u8 channel_first_int
[VPIF_NUMBER_OF_OBJECTS
][2] = { {1, 1} };
60 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
61 static int ycmux_mode
;
64 struct vpif_cap_buffer
*to_vpif_buffer(struct vb2_v4l2_buffer
*vb
)
66 return container_of(vb
, struct vpif_cap_buffer
, vb
);
70 * vpif_buffer_prepare : callback function for buffer prepare
71 * @vb: ptr to vb2_buffer
73 * This is the callback function for buffer prepare when vb2_qbuf()
74 * function is called. The buffer is prepared and user space virtual address
75 * or user address is converted into physical address
77 static int vpif_buffer_prepare(struct vb2_buffer
*vb
)
79 struct vb2_v4l2_buffer
*vbuf
= to_vb2_v4l2_buffer(vb
);
80 struct vb2_queue
*q
= vb
->vb2_queue
;
81 struct channel_obj
*ch
= vb2_get_drv_priv(q
);
82 struct common_obj
*common
;
85 vpif_dbg(2, debug
, "vpif_buffer_prepare\n");
87 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
89 vb2_set_plane_payload(vb
, 0, common
->fmt
.fmt
.pix
.sizeimage
);
90 if (vb2_get_plane_payload(vb
, 0) > vb2_plane_size(vb
, 0))
93 vbuf
->field
= common
->fmt
.fmt
.pix
.field
;
95 addr
= vb2_dma_contig_plane_dma_addr(vb
, 0);
96 if (!IS_ALIGNED((addr
+ common
->ytop_off
), 8) ||
97 !IS_ALIGNED((addr
+ common
->ybtm_off
), 8) ||
98 !IS_ALIGNED((addr
+ common
->ctop_off
), 8) ||
99 !IS_ALIGNED((addr
+ common
->cbtm_off
), 8)) {
100 vpif_dbg(1, debug
, "offset is not aligned\n");
108 * vpif_buffer_queue_setup : Callback function for buffer setup.
110 * @nbuffers: ptr to number of buffers requested by application
111 * @nplanes:: contains number of distinct video planes needed to hold a frame
112 * @sizes: contains the size (in bytes) of each plane.
113 * @alloc_devs: ptr to allocation context
115 * This callback function is called when reqbuf() is called to adjust
116 * the buffer count and buffer size
118 static int vpif_buffer_queue_setup(struct vb2_queue
*vq
,
119 unsigned int *nbuffers
, unsigned int *nplanes
,
120 unsigned int sizes
[], struct device
*alloc_devs
[])
122 struct channel_obj
*ch
= vb2_get_drv_priv(vq
);
123 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
124 unsigned size
= common
->fmt
.fmt
.pix
.sizeimage
;
126 vpif_dbg(2, debug
, "vpif_buffer_setup\n");
134 if (vq
->num_buffers
+ *nbuffers
< 3)
135 *nbuffers
= 3 - vq
->num_buffers
;
140 /* Calculate the offset for Y and C data in the buffer */
141 vpif_calculate_offsets(ch
);
147 * vpif_buffer_queue : Callback function to add buffer to DMA queue
148 * @vb: ptr to vb2_buffer
150 static void vpif_buffer_queue(struct vb2_buffer
*vb
)
152 struct vb2_v4l2_buffer
*vbuf
= to_vb2_v4l2_buffer(vb
);
153 struct channel_obj
*ch
= vb2_get_drv_priv(vb
->vb2_queue
);
154 struct vpif_cap_buffer
*buf
= to_vpif_buffer(vbuf
);
155 struct common_obj
*common
;
158 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
160 vpif_dbg(2, debug
, "vpif_buffer_queue\n");
162 spin_lock_irqsave(&common
->irqlock
, flags
);
163 /* add the buffer to the DMA queue */
164 list_add_tail(&buf
->list
, &common
->dma_queue
);
165 spin_unlock_irqrestore(&common
->irqlock
, flags
);
169 * vpif_start_streaming : Starts the DMA engine for streaming
170 * @vq: ptr to vb2_buffer
171 * @count: number of buffers
173 static int vpif_start_streaming(struct vb2_queue
*vq
, unsigned int count
)
175 struct vpif_capture_config
*vpif_config_data
=
176 vpif_dev
->platform_data
;
177 struct channel_obj
*ch
= vb2_get_drv_priv(vq
);
178 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
179 struct vpif_params
*vpif
= &ch
->vpifparams
;
180 struct vpif_cap_buffer
*buf
, *tmp
;
181 unsigned long addr
, flags
;
184 /* Initialize field_id */
187 /* configure 1 or 2 channel mode */
188 if (vpif_config_data
->setup_input_channel_mode
) {
189 ret
= vpif_config_data
->
190 setup_input_channel_mode(vpif
->std_info
.ycmux_mode
);
192 vpif_dbg(1, debug
, "can't set vpif channel mode\n");
197 ret
= v4l2_subdev_call(ch
->sd
, video
, s_stream
, 1);
198 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
) {
199 vpif_dbg(1, debug
, "stream on failed in subdev\n");
203 /* Call vpif_set_params function to set the parameters and addresses */
204 ret
= vpif_set_video_params(vpif
, ch
->channel_id
);
206 vpif_dbg(1, debug
, "can't set video params\n");
211 vpif_config_addr(ch
, ret
);
213 /* Get the next frame from the buffer queue */
214 spin_lock_irqsave(&common
->irqlock
, flags
);
215 common
->cur_frm
= common
->next_frm
= list_entry(common
->dma_queue
.next
,
216 struct vpif_cap_buffer
, list
);
217 /* Remove buffer from the buffer queue */
218 list_del(&common
->cur_frm
->list
);
219 spin_unlock_irqrestore(&common
->irqlock
, flags
);
221 addr
= vb2_dma_contig_plane_dma_addr(&common
->cur_frm
->vb
.vb2_buf
, 0);
223 common
->set_addr(addr
+ common
->ytop_off
,
224 addr
+ common
->ybtm_off
,
225 addr
+ common
->ctop_off
,
226 addr
+ common
->cbtm_off
);
229 * Set interrupt for both the fields in VPIF Register enable channel in
232 channel_first_int
[VPIF_VIDEO_INDEX
][ch
->channel_id
] = 1;
233 if (VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) {
234 channel0_intr_assert();
235 channel0_intr_enable(1);
238 if (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
||
240 channel1_intr_assert();
241 channel1_intr_enable(1);
248 spin_lock_irqsave(&common
->irqlock
, flags
);
249 list_for_each_entry_safe(buf
, tmp
, &common
->dma_queue
, list
) {
250 list_del(&buf
->list
);
251 vb2_buffer_done(&buf
->vb
.vb2_buf
, VB2_BUF_STATE_QUEUED
);
253 spin_unlock_irqrestore(&common
->irqlock
, flags
);
259 * vpif_stop_streaming : Stop the DMA engine
260 * @vq: ptr to vb2_queue
262 * This callback stops the DMA engine and any remaining buffers
263 * in the DMA queue are released.
265 static void vpif_stop_streaming(struct vb2_queue
*vq
)
267 struct channel_obj
*ch
= vb2_get_drv_priv(vq
);
268 struct common_obj
*common
;
272 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
274 /* Disable channel as per its device type and channel id */
275 if (VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) {
277 channel0_intr_enable(0);
279 if (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
||
282 channel1_intr_enable(0);
287 ret
= v4l2_subdev_call(ch
->sd
, video
, s_stream
, 0);
288 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
)
289 vpif_dbg(1, debug
, "stream off failed in subdev\n");
291 /* release all active buffers */
292 if (common
->cur_frm
== common
->next_frm
) {
293 vb2_buffer_done(&common
->cur_frm
->vb
.vb2_buf
,
294 VB2_BUF_STATE_ERROR
);
297 vb2_buffer_done(&common
->cur_frm
->vb
.vb2_buf
,
298 VB2_BUF_STATE_ERROR
);
299 if (common
->next_frm
)
300 vb2_buffer_done(&common
->next_frm
->vb
.vb2_buf
,
301 VB2_BUF_STATE_ERROR
);
304 spin_lock_irqsave(&common
->irqlock
, flags
);
305 while (!list_empty(&common
->dma_queue
)) {
306 common
->next_frm
= list_entry(common
->dma_queue
.next
,
307 struct vpif_cap_buffer
, list
);
308 list_del(&common
->next_frm
->list
);
309 vb2_buffer_done(&common
->next_frm
->vb
.vb2_buf
,
310 VB2_BUF_STATE_ERROR
);
312 spin_unlock_irqrestore(&common
->irqlock
, flags
);
315 static const struct vb2_ops video_qops
= {
316 .queue_setup
= vpif_buffer_queue_setup
,
317 .buf_prepare
= vpif_buffer_prepare
,
318 .start_streaming
= vpif_start_streaming
,
319 .stop_streaming
= vpif_stop_streaming
,
320 .buf_queue
= vpif_buffer_queue
,
321 .wait_prepare
= vb2_ops_wait_prepare
,
322 .wait_finish
= vb2_ops_wait_finish
,
326 * vpif_process_buffer_complete: process a completed buffer
327 * @common: ptr to common channel object
329 * This function time stamp the buffer and mark it as DONE. It also
330 * wake up any process waiting on the QUEUE and set the next buffer
333 static void vpif_process_buffer_complete(struct common_obj
*common
)
335 common
->cur_frm
->vb
.vb2_buf
.timestamp
= ktime_get_ns();
336 vb2_buffer_done(&common
->cur_frm
->vb
.vb2_buf
, VB2_BUF_STATE_DONE
);
337 /* Make curFrm pointing to nextFrm */
338 common
->cur_frm
= common
->next_frm
;
342 * vpif_schedule_next_buffer: set next buffer address for capture
343 * @common : ptr to common channel object
345 * This function will get next buffer from the dma queue and
346 * set the buffer address in the vpif register for capture.
347 * the buffer is marked active
349 static void vpif_schedule_next_buffer(struct common_obj
*common
)
351 unsigned long addr
= 0;
353 spin_lock(&common
->irqlock
);
354 common
->next_frm
= list_entry(common
->dma_queue
.next
,
355 struct vpif_cap_buffer
, list
);
356 /* Remove that buffer from the buffer queue */
357 list_del(&common
->next_frm
->list
);
358 spin_unlock(&common
->irqlock
);
359 addr
= vb2_dma_contig_plane_dma_addr(&common
->next_frm
->vb
.vb2_buf
, 0);
361 /* Set top and bottom field addresses in VPIF registers */
362 common
->set_addr(addr
+ common
->ytop_off
,
363 addr
+ common
->ybtm_off
,
364 addr
+ common
->ctop_off
,
365 addr
+ common
->cbtm_off
);
369 * vpif_channel_isr : ISR handler for vpif capture
371 * @dev_id: dev_id ptr
373 * It changes status of the captured buffer, takes next buffer from the queue
374 * and sets its address in VPIF registers
376 static irqreturn_t
vpif_channel_isr(int irq
, void *dev_id
)
378 struct vpif_device
*dev
= &vpif_obj
;
379 struct common_obj
*common
;
380 struct channel_obj
*ch
;
384 channel_id
= *(int *)(dev_id
);
385 if (!vpif_intr_status(channel_id
))
388 ch
= dev
->dev
[channel_id
];
390 for (i
= 0; i
< VPIF_NUMBER_OF_OBJECTS
; i
++) {
391 common
= &ch
->common
[i
];
392 /* skip If streaming is not started in this channel */
393 /* Check the field format */
394 if (1 == ch
->vpifparams
.std_info
.frm_fmt
||
395 common
->fmt
.fmt
.pix
.field
== V4L2_FIELD_NONE
) {
396 /* Progressive mode */
397 spin_lock(&common
->irqlock
);
398 if (list_empty(&common
->dma_queue
)) {
399 spin_unlock(&common
->irqlock
);
402 spin_unlock(&common
->irqlock
);
404 if (!channel_first_int
[i
][channel_id
])
405 vpif_process_buffer_complete(common
);
407 channel_first_int
[i
][channel_id
] = 0;
409 vpif_schedule_next_buffer(common
);
412 channel_first_int
[i
][channel_id
] = 0;
415 * Interlaced mode. If it is first interrupt, ignore
418 if (channel_first_int
[i
][channel_id
]) {
419 channel_first_int
[i
][channel_id
] = 0;
424 /* Get field id from VPIF registers */
425 fid
= vpif_channel_getfid(ch
->channel_id
);
426 if (fid
!= ch
->field_id
) {
428 * If field id does not match stored
429 * field id, make them in sync
436 /* device field id and local field id are in sync */
438 /* this is even field */
439 if (common
->cur_frm
== common
->next_frm
)
442 /* mark the current buffer as done */
443 vpif_process_buffer_complete(common
);
444 } else if (1 == fid
) {
446 spin_lock(&common
->irqlock
);
447 if (list_empty(&common
->dma_queue
) ||
448 (common
->cur_frm
!= common
->next_frm
)) {
449 spin_unlock(&common
->irqlock
);
452 spin_unlock(&common
->irqlock
);
454 vpif_schedule_next_buffer(common
);
462 * vpif_update_std_info() - update standard related info
463 * @ch: ptr to channel object
465 * For a given standard selected by application, update values
466 * in the device data structures
468 static int vpif_update_std_info(struct channel_obj
*ch
)
470 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
471 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
472 const struct vpif_channel_config_params
*config
;
473 struct vpif_channel_config_params
*std_info
= &vpifparams
->std_info
;
474 struct video_obj
*vid_ch
= &ch
->video
;
476 struct v4l2_pix_format
*pixfmt
= &common
->fmt
.fmt
.pix
;
478 vpif_dbg(2, debug
, "vpif_update_std_info\n");
481 * if called after try_fmt or g_fmt, there will already be a size
482 * so use that by default.
484 if (pixfmt
->width
&& pixfmt
->height
) {
485 if (pixfmt
->field
== V4L2_FIELD_ANY
||
486 pixfmt
->field
== V4L2_FIELD_NONE
)
487 pixfmt
->field
= V4L2_FIELD_NONE
;
489 vpifparams
->iface
.if_type
= VPIF_IF_BT656
;
490 if (pixfmt
->pixelformat
== V4L2_PIX_FMT_SGRBG10
||
491 pixfmt
->pixelformat
== V4L2_PIX_FMT_SBGGR8
)
492 vpifparams
->iface
.if_type
= VPIF_IF_RAW_BAYER
;
494 if (pixfmt
->pixelformat
== V4L2_PIX_FMT_SGRBG10
)
495 vpifparams
->params
.data_sz
= 1; /* 10 bits/pixel. */
498 * For raw formats from camera sensors, we don't need
499 * the std_info from table lookup, so nothing else to do here.
501 if (vpifparams
->iface
.if_type
== VPIF_IF_RAW_BAYER
) {
502 memset(std_info
, 0, sizeof(struct vpif_channel_config_params
));
503 vpifparams
->std_info
.capture_format
= 1; /* CCD/raw mode */
508 for (index
= 0; index
< vpif_ch_params_count
; index
++) {
509 config
= &vpif_ch_params
[index
];
510 if (config
->hd_sd
== 0) {
511 vpif_dbg(2, debug
, "SD format\n");
512 if (config
->stdid
& vid_ch
->stdid
) {
513 memcpy(std_info
, config
, sizeof(*config
));
517 vpif_dbg(2, debug
, "HD format\n");
518 if (!memcmp(&config
->dv_timings
, &vid_ch
->dv_timings
,
519 sizeof(vid_ch
->dv_timings
))) {
520 memcpy(std_info
, config
, sizeof(*config
));
526 /* standard not found */
527 if (index
== vpif_ch_params_count
)
530 common
->fmt
.fmt
.pix
.width
= std_info
->width
;
531 common
->width
= std_info
->width
;
532 common
->fmt
.fmt
.pix
.height
= std_info
->height
;
533 common
->height
= std_info
->height
;
534 common
->fmt
.fmt
.pix
.sizeimage
= common
->height
* common
->width
* 2;
535 common
->fmt
.fmt
.pix
.bytesperline
= std_info
->width
;
536 vpifparams
->video_params
.hpitch
= std_info
->width
;
537 vpifparams
->video_params
.storage_mode
= std_info
->frm_fmt
;
540 common
->fmt
.fmt
.pix
.colorspace
= V4L2_COLORSPACE_SMPTE170M
;
542 common
->fmt
.fmt
.pix
.colorspace
= V4L2_COLORSPACE_REC709
;
544 if (ch
->vpifparams
.std_info
.frm_fmt
)
545 common
->fmt
.fmt
.pix
.field
= V4L2_FIELD_NONE
;
547 common
->fmt
.fmt
.pix
.field
= V4L2_FIELD_INTERLACED
;
549 if (ch
->vpifparams
.iface
.if_type
== VPIF_IF_RAW_BAYER
)
550 common
->fmt
.fmt
.pix
.pixelformat
= V4L2_PIX_FMT_SBGGR8
;
552 common
->fmt
.fmt
.pix
.pixelformat
= V4L2_PIX_FMT_NV16
;
554 common
->fmt
.type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
560 * vpif_calculate_offsets : This function calculates buffers offsets
561 * @ch : ptr to channel object
563 * This function calculates buffer offsets for Y and C in the top and
566 static void vpif_calculate_offsets(struct channel_obj
*ch
)
568 unsigned int hpitch
, sizeimage
;
569 struct video_obj
*vid_ch
= &(ch
->video
);
570 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
571 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
572 enum v4l2_field field
= common
->fmt
.fmt
.pix
.field
;
574 vpif_dbg(2, debug
, "vpif_calculate_offsets\n");
576 if (V4L2_FIELD_ANY
== field
) {
577 if (vpifparams
->std_info
.frm_fmt
)
578 vid_ch
->buf_field
= V4L2_FIELD_NONE
;
580 vid_ch
->buf_field
= V4L2_FIELD_INTERLACED
;
582 vid_ch
->buf_field
= common
->fmt
.fmt
.pix
.field
;
584 sizeimage
= common
->fmt
.fmt
.pix
.sizeimage
;
586 hpitch
= common
->fmt
.fmt
.pix
.bytesperline
;
588 if ((V4L2_FIELD_NONE
== vid_ch
->buf_field
) ||
589 (V4L2_FIELD_INTERLACED
== vid_ch
->buf_field
)) {
590 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
591 common
->ytop_off
= 0;
592 common
->ybtm_off
= hpitch
;
593 common
->ctop_off
= sizeimage
/ 2;
594 common
->cbtm_off
= sizeimage
/ 2 + hpitch
;
595 } else if (V4L2_FIELD_SEQ_TB
== vid_ch
->buf_field
) {
596 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
597 common
->ytop_off
= 0;
598 common
->ybtm_off
= sizeimage
/ 4;
599 common
->ctop_off
= sizeimage
/ 2;
600 common
->cbtm_off
= common
->ctop_off
+ sizeimage
/ 4;
601 } else if (V4L2_FIELD_SEQ_BT
== vid_ch
->buf_field
) {
602 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
603 common
->ybtm_off
= 0;
604 common
->ytop_off
= sizeimage
/ 4;
605 common
->cbtm_off
= sizeimage
/ 2;
606 common
->ctop_off
= common
->cbtm_off
+ sizeimage
/ 4;
608 if ((V4L2_FIELD_NONE
== vid_ch
->buf_field
) ||
609 (V4L2_FIELD_INTERLACED
== vid_ch
->buf_field
))
610 vpifparams
->video_params
.storage_mode
= 1;
612 vpifparams
->video_params
.storage_mode
= 0;
614 if (1 == vpifparams
->std_info
.frm_fmt
)
615 vpifparams
->video_params
.hpitch
=
616 common
->fmt
.fmt
.pix
.bytesperline
;
618 if ((field
== V4L2_FIELD_ANY
)
619 || (field
== V4L2_FIELD_INTERLACED
))
620 vpifparams
->video_params
.hpitch
=
621 common
->fmt
.fmt
.pix
.bytesperline
* 2;
623 vpifparams
->video_params
.hpitch
=
624 common
->fmt
.fmt
.pix
.bytesperline
;
627 ch
->vpifparams
.video_params
.stdid
= vpifparams
->std_info
.stdid
;
631 * vpif_get_default_field() - Get default field type based on interface
632 * @iface: ptr to vpif interface
634 static inline enum v4l2_field
vpif_get_default_field(
635 struct vpif_interface
*iface
)
637 return (iface
->if_type
== VPIF_IF_RAW_BAYER
) ? V4L2_FIELD_NONE
:
638 V4L2_FIELD_INTERLACED
;
642 * vpif_config_addr() - function to configure buffer address in vpif
644 * @muxmode: channel mux mode
646 static void vpif_config_addr(struct channel_obj
*ch
, int muxmode
)
648 struct common_obj
*common
;
650 vpif_dbg(2, debug
, "vpif_config_addr\n");
652 common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
654 if (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)
655 common
->set_addr
= ch1_set_videobuf_addr
;
656 else if (2 == muxmode
)
657 common
->set_addr
= ch0_set_videobuf_addr_yc_nmux
;
659 common
->set_addr
= ch0_set_videobuf_addr
;
663 * vpif_input_to_subdev() - Maps input to sub device
664 * @vpif_cfg: global config ptr
665 * @chan_cfg: channel config ptr
666 * @input_index: Given input index from application
668 * lookup the sub device information for a given input index.
669 * we report all the inputs to application. inputs table also
670 * has sub device name for the each input
672 static int vpif_input_to_subdev(
673 struct vpif_capture_config
*vpif_cfg
,
674 struct vpif_capture_chan_config
*chan_cfg
,
677 struct vpif_subdev_info
*subdev_info
;
678 const char *subdev_name
;
681 vpif_dbg(2, debug
, "vpif_input_to_subdev\n");
685 if (input_index
>= chan_cfg
->input_count
)
687 subdev_name
= chan_cfg
->inputs
[input_index
].subdev_name
;
691 /* loop through the sub device list to get the sub device info */
692 for (i
= 0; i
< vpif_cfg
->subdev_count
; i
++) {
693 subdev_info
= &vpif_cfg
->subdev_info
[i
];
694 if (subdev_info
&& !strcmp(subdev_info
->name
, subdev_name
))
701 * vpif_set_input() - Select an input
702 * @vpif_cfg: global config ptr
704 * @index: Given input index from application
706 * Select the given input.
708 static int vpif_set_input(
709 struct vpif_capture_config
*vpif_cfg
,
710 struct channel_obj
*ch
,
713 struct vpif_capture_chan_config
*chan_cfg
=
714 &vpif_cfg
->chan_config
[ch
->channel_id
];
715 struct vpif_subdev_info
*subdev_info
= NULL
;
716 struct v4l2_subdev
*sd
= NULL
;
717 u32 input
= 0, output
= 0;
721 sd_index
= vpif_input_to_subdev(vpif_cfg
, chan_cfg
, index
);
723 sd
= vpif_obj
.sd
[sd_index
];
724 subdev_info
= &vpif_cfg
->subdev_info
[sd_index
];
726 /* no subdevice, no input to setup */
730 /* first setup input path from sub device to vpif */
731 if (sd
&& vpif_cfg
->setup_input_path
) {
732 ret
= vpif_cfg
->setup_input_path(ch
->channel_id
,
735 vpif_dbg(1, debug
, "couldn't setup input path for the" \
736 " sub device %s, for input index %d\n",
737 subdev_info
->name
, index
);
743 input
= chan_cfg
->inputs
[index
].input_route
;
744 output
= chan_cfg
->inputs
[index
].output_route
;
745 ret
= v4l2_subdev_call(sd
, video
, s_routing
,
747 if (ret
< 0 && ret
!= -ENOIOCTLCMD
) {
748 vpif_dbg(1, debug
, "Failed to set input\n");
752 ch
->input_idx
= index
;
754 /* copy interface parameters to vpif */
755 ch
->vpifparams
.iface
= chan_cfg
->vpif_if
;
757 /* update tvnorms from the sub device input info */
758 ch
->video_dev
.tvnorms
= chan_cfg
->inputs
[index
].input
.std
;
763 * vpif_querystd() - querystd handler
766 * @std_id: ptr to std id
768 * This function is called to detect standard at the selected input
770 static int vpif_querystd(struct file
*file
, void *priv
, v4l2_std_id
*std_id
)
772 struct video_device
*vdev
= video_devdata(file
);
773 struct channel_obj
*ch
= video_get_drvdata(vdev
);
776 vpif_dbg(2, debug
, "vpif_querystd\n");
778 /* Call querystd function of decoder device */
779 ret
= v4l2_subdev_call(ch
->sd
, video
, querystd
, std_id
);
781 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
784 vpif_dbg(1, debug
, "Failed to query standard for sub devices\n");
792 * vpif_g_std() - get STD handler
795 * @std: ptr to std id
797 static int vpif_g_std(struct file
*file
, void *priv
, v4l2_std_id
*std
)
799 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
800 struct video_device
*vdev
= video_devdata(file
);
801 struct channel_obj
*ch
= video_get_drvdata(vdev
);
802 struct vpif_capture_chan_config
*chan_cfg
;
803 struct v4l2_input input
;
805 vpif_dbg(2, debug
, "vpif_g_std\n");
807 if (!config
->chan_config
[ch
->channel_id
].inputs
)
810 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
811 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
812 if (input
.capabilities
!= V4L2_IN_CAP_STD
)
815 *std
= ch
->video
.stdid
;
820 * vpif_s_std() - set STD handler
823 * @std_id: ptr to std id
825 static int vpif_s_std(struct file
*file
, void *priv
, v4l2_std_id std_id
)
827 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
828 struct video_device
*vdev
= video_devdata(file
);
829 struct channel_obj
*ch
= video_get_drvdata(vdev
);
830 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
831 struct vpif_capture_chan_config
*chan_cfg
;
832 struct v4l2_input input
;
835 vpif_dbg(2, debug
, "vpif_s_std\n");
837 if (!config
->chan_config
[ch
->channel_id
].inputs
)
840 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
841 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
842 if (input
.capabilities
!= V4L2_IN_CAP_STD
)
845 if (vb2_is_busy(&common
->buffer_queue
))
848 /* Call encoder subdevice function to set the standard */
849 ch
->video
.stdid
= std_id
;
850 memset(&ch
->video
.dv_timings
, 0, sizeof(ch
->video
.dv_timings
));
852 /* Get the information about the standard */
853 if (vpif_update_std_info(ch
)) {
854 vpif_err("Error getting the standard info\n");
858 /* set standard in the sub device */
859 ret
= v4l2_subdev_call(ch
->sd
, video
, s_std
, std_id
);
860 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
) {
861 vpif_dbg(1, debug
, "Failed to set standard for sub devices\n");
868 * vpif_enum_input() - ENUMINPUT handler
871 * @input: ptr to input structure
873 static int vpif_enum_input(struct file
*file
, void *priv
,
874 struct v4l2_input
*input
)
877 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
878 struct video_device
*vdev
= video_devdata(file
);
879 struct channel_obj
*ch
= video_get_drvdata(vdev
);
880 struct vpif_capture_chan_config
*chan_cfg
;
882 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
884 if (input
->index
>= chan_cfg
->input_count
)
887 memcpy(input
, &chan_cfg
->inputs
[input
->index
].input
,
893 * vpif_g_input() - Get INPUT handler
896 * @index: ptr to input index
898 static int vpif_g_input(struct file
*file
, void *priv
, unsigned int *index
)
900 struct video_device
*vdev
= video_devdata(file
);
901 struct channel_obj
*ch
= video_get_drvdata(vdev
);
903 *index
= ch
->input_idx
;
908 * vpif_s_input() - Set INPUT handler
911 * @index: input index
913 static int vpif_s_input(struct file
*file
, void *priv
, unsigned int index
)
915 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
916 struct video_device
*vdev
= video_devdata(file
);
917 struct channel_obj
*ch
= video_get_drvdata(vdev
);
918 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
919 struct vpif_capture_chan_config
*chan_cfg
;
921 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
923 if (index
>= chan_cfg
->input_count
)
926 if (vb2_is_busy(&common
->buffer_queue
))
929 return vpif_set_input(config
, ch
, index
);
933 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
936 * @fmt: ptr to V4L2 format descriptor
938 static int vpif_enum_fmt_vid_cap(struct file
*file
, void *priv
,
939 struct v4l2_fmtdesc
*fmt
)
941 struct video_device
*vdev
= video_devdata(file
);
942 struct channel_obj
*ch
= video_get_drvdata(vdev
);
944 if (fmt
->index
!= 0) {
945 vpif_dbg(1, debug
, "Invalid format index\n");
949 /* Fill in the information about format */
950 if (ch
->vpifparams
.iface
.if_type
== VPIF_IF_RAW_BAYER
) {
951 fmt
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
952 strcpy(fmt
->description
, "Raw Mode -Bayer Pattern GrRBGb");
953 fmt
->pixelformat
= V4L2_PIX_FMT_SBGGR8
;
955 fmt
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
956 strcpy(fmt
->description
, "YCbCr4:2:2 Semi-Planar");
957 fmt
->pixelformat
= V4L2_PIX_FMT_NV16
;
963 * vpif_try_fmt_vid_cap() - TRY_FMT handler
966 * @fmt: ptr to v4l2 format structure
968 static int vpif_try_fmt_vid_cap(struct file
*file
, void *priv
,
969 struct v4l2_format
*fmt
)
971 struct video_device
*vdev
= video_devdata(file
);
972 struct channel_obj
*ch
= video_get_drvdata(vdev
);
973 struct v4l2_pix_format
*pixfmt
= &fmt
->fmt
.pix
;
974 struct common_obj
*common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
977 vpif_update_std_info(ch
);
979 pixfmt
->field
= common
->fmt
.fmt
.pix
.field
;
980 pixfmt
->colorspace
= common
->fmt
.fmt
.pix
.colorspace
;
981 pixfmt
->bytesperline
= common
->fmt
.fmt
.pix
.width
;
982 pixfmt
->width
= common
->fmt
.fmt
.pix
.width
;
983 pixfmt
->height
= common
->fmt
.fmt
.pix
.height
;
984 pixfmt
->sizeimage
= pixfmt
->bytesperline
* pixfmt
->height
* 2;
985 if (pixfmt
->pixelformat
== V4L2_PIX_FMT_SGRBG10
) {
986 pixfmt
->bytesperline
= common
->fmt
.fmt
.pix
.width
* 2;
987 pixfmt
->sizeimage
= pixfmt
->bytesperline
* pixfmt
->height
;
991 dev_dbg(vpif_dev
, "%s: %d x %d; pitch=%d pixelformat=0x%08x, field=%d, size=%d\n", __func__
,
992 pixfmt
->width
, pixfmt
->height
,
993 pixfmt
->bytesperline
, pixfmt
->pixelformat
,
994 pixfmt
->field
, pixfmt
->sizeimage
);
1001 * vpif_g_fmt_vid_cap() - Set INPUT handler
1003 * @priv: file handle
1004 * @fmt: ptr to v4l2 format structure
1006 static int vpif_g_fmt_vid_cap(struct file
*file
, void *priv
,
1007 struct v4l2_format
*fmt
)
1009 struct video_device
*vdev
= video_devdata(file
);
1010 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1011 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1012 struct v4l2_pix_format
*pix_fmt
= &fmt
->fmt
.pix
;
1013 struct v4l2_subdev_format format
= {
1014 .which
= V4L2_SUBDEV_FORMAT_ACTIVE
,
1016 struct v4l2_mbus_framefmt
*mbus_fmt
= &format
.format
;
1019 /* Check the validity of the buffer type */
1020 if (common
->fmt
.type
!= fmt
->type
)
1023 /* By default, use currently set fmt */
1026 /* If subdev has get_fmt, use that to override */
1027 ret
= v4l2_subdev_call(ch
->sd
, pad
, get_fmt
, NULL
, &format
);
1028 if (!ret
&& mbus_fmt
->code
) {
1029 v4l2_fill_pix_format(pix_fmt
, mbus_fmt
);
1030 pix_fmt
->bytesperline
= pix_fmt
->width
;
1031 if (mbus_fmt
->code
== MEDIA_BUS_FMT_SGRBG10_1X10
) {
1033 pix_fmt
->pixelformat
= V4L2_PIX_FMT_SGRBG10
;
1034 pix_fmt
->bytesperline
= pix_fmt
->width
* 2;
1035 } else if (mbus_fmt
->code
== MEDIA_BUS_FMT_UYVY8_2X8
) {
1037 pix_fmt
->pixelformat
= V4L2_PIX_FMT_NV16
;
1038 pix_fmt
->bytesperline
= pix_fmt
->width
* 2;
1040 dev_warn(vpif_dev
, "%s: Unhandled media-bus format 0x%x\n",
1041 __func__
, mbus_fmt
->code
);
1043 pix_fmt
->sizeimage
= pix_fmt
->bytesperline
* pix_fmt
->height
;
1044 dev_dbg(vpif_dev
, "%s: %d x %d; pitch=%d, pixelformat=0x%08x, code=0x%x, field=%d, size=%d\n", __func__
,
1045 pix_fmt
->width
, pix_fmt
->height
,
1046 pix_fmt
->bytesperline
, pix_fmt
->pixelformat
,
1047 mbus_fmt
->code
, pix_fmt
->field
, pix_fmt
->sizeimage
);
1050 vpif_update_std_info(ch
);
1057 * vpif_s_fmt_vid_cap() - Set FMT handler
1059 * @priv: file handle
1060 * @fmt: ptr to v4l2 format structure
1062 static int vpif_s_fmt_vid_cap(struct file
*file
, void *priv
,
1063 struct v4l2_format
*fmt
)
1065 struct video_device
*vdev
= video_devdata(file
);
1066 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1067 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1070 vpif_dbg(2, debug
, "%s\n", __func__
);
1072 if (vb2_is_busy(&common
->buffer_queue
))
1075 ret
= vpif_try_fmt_vid_cap(file
, priv
, fmt
);
1079 /* store the format in the channel object */
1085 * vpif_querycap() - QUERYCAP handler
1087 * @priv: file handle
1088 * @cap: ptr to v4l2_capability structure
1090 static int vpif_querycap(struct file
*file
, void *priv
,
1091 struct v4l2_capability
*cap
)
1093 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1095 cap
->device_caps
= V4L2_CAP_VIDEO_CAPTURE
| V4L2_CAP_STREAMING
;
1096 cap
->capabilities
= cap
->device_caps
| V4L2_CAP_DEVICE_CAPS
;
1097 strlcpy(cap
->driver
, VPIF_DRIVER_NAME
, sizeof(cap
->driver
));
1098 snprintf(cap
->bus_info
, sizeof(cap
->bus_info
), "platform:%s",
1099 dev_name(vpif_dev
));
1100 strlcpy(cap
->card
, config
->card_name
, sizeof(cap
->card
));
1106 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1108 * @priv: file handle
1109 * @timings: input timings
1112 vpif_enum_dv_timings(struct file
*file
, void *priv
,
1113 struct v4l2_enum_dv_timings
*timings
)
1115 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1116 struct video_device
*vdev
= video_devdata(file
);
1117 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1118 struct vpif_capture_chan_config
*chan_cfg
;
1119 struct v4l2_input input
;
1122 if (!config
->chan_config
[ch
->channel_id
].inputs
)
1125 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1126 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1127 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1132 ret
= v4l2_subdev_call(ch
->sd
, pad
, enum_dv_timings
, timings
);
1133 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
1140 * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1142 * @priv: file handle
1143 * @timings: input timings
1146 vpif_query_dv_timings(struct file
*file
, void *priv
,
1147 struct v4l2_dv_timings
*timings
)
1149 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1150 struct video_device
*vdev
= video_devdata(file
);
1151 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1152 struct vpif_capture_chan_config
*chan_cfg
;
1153 struct v4l2_input input
;
1156 if (!config
->chan_config
[ch
->channel_id
].inputs
)
1159 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1160 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1161 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1164 ret
= v4l2_subdev_call(ch
->sd
, video
, query_dv_timings
, timings
);
1165 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
1172 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1174 * @priv: file handle
1175 * @timings: digital video timings
1177 static int vpif_s_dv_timings(struct file
*file
, void *priv
,
1178 struct v4l2_dv_timings
*timings
)
1180 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1181 struct video_device
*vdev
= video_devdata(file
);
1182 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1183 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
1184 struct vpif_channel_config_params
*std_info
= &vpifparams
->std_info
;
1185 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1186 struct video_obj
*vid_ch
= &ch
->video
;
1187 struct v4l2_bt_timings
*bt
= &vid_ch
->dv_timings
.bt
;
1188 struct vpif_capture_chan_config
*chan_cfg
;
1189 struct v4l2_input input
;
1192 if (!config
->chan_config
[ch
->channel_id
].inputs
)
1195 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1196 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1197 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1200 if (timings
->type
!= V4L2_DV_BT_656_1120
) {
1201 vpif_dbg(2, debug
, "Timing type not defined\n");
1205 if (vb2_is_busy(&common
->buffer_queue
))
1208 /* Configure subdevice timings, if any */
1209 ret
= v4l2_subdev_call(ch
->sd
, video
, s_dv_timings
, timings
);
1210 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
1213 vpif_dbg(2, debug
, "Error setting custom DV timings\n");
1217 if (!(timings
->bt
.width
&& timings
->bt
.height
&&
1218 (timings
->bt
.hbackporch
||
1219 timings
->bt
.hfrontporch
||
1220 timings
->bt
.hsync
) &&
1221 timings
->bt
.vfrontporch
&&
1222 (timings
->bt
.vbackporch
||
1223 timings
->bt
.vsync
))) {
1224 vpif_dbg(2, debug
, "Timings for width, height, horizontal back porch, horizontal sync, horizontal front porch, vertical back porch, vertical sync and vertical back porch must be defined\n");
1228 vid_ch
->dv_timings
= *timings
;
1230 /* Configure video port timings */
1232 std_info
->eav2sav
= V4L2_DV_BT_BLANKING_WIDTH(bt
) - 8;
1233 std_info
->sav2eav
= bt
->width
;
1236 std_info
->l3
= bt
->vsync
+ bt
->vbackporch
+ 1;
1238 std_info
->vsize
= V4L2_DV_BT_FRAME_HEIGHT(bt
);
1239 if (bt
->interlaced
) {
1240 if (bt
->il_vbackporch
|| bt
->il_vfrontporch
|| bt
->il_vsync
) {
1241 std_info
->l5
= std_info
->vsize
/2 -
1242 (bt
->vfrontporch
- 1);
1243 std_info
->l7
= std_info
->vsize
/2 + 1;
1244 std_info
->l9
= std_info
->l7
+ bt
->il_vsync
+
1245 bt
->il_vbackporch
+ 1;
1246 std_info
->l11
= std_info
->vsize
-
1247 (bt
->il_vfrontporch
- 1);
1249 vpif_dbg(2, debug
, "Required timing values for interlaced BT format missing\n");
1253 std_info
->l5
= std_info
->vsize
- (bt
->vfrontporch
- 1);
1255 strncpy(std_info
->name
, "Custom timings BT656/1120", VPIF_MAX_NAME
);
1256 std_info
->width
= bt
->width
;
1257 std_info
->height
= bt
->height
;
1258 std_info
->frm_fmt
= bt
->interlaced
? 0 : 1;
1259 std_info
->ycmux_mode
= 0;
1260 std_info
->capture_format
= 0;
1261 std_info
->vbi_supported
= 0;
1262 std_info
->hd_sd
= 1;
1263 std_info
->stdid
= 0;
1270 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1272 * @priv: file handle
1273 * @timings: digital video timings
1275 static int vpif_g_dv_timings(struct file
*file
, void *priv
,
1276 struct v4l2_dv_timings
*timings
)
1278 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1279 struct video_device
*vdev
= video_devdata(file
);
1280 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1281 struct video_obj
*vid_ch
= &ch
->video
;
1282 struct vpif_capture_chan_config
*chan_cfg
;
1283 struct v4l2_input input
;
1285 if (!config
->chan_config
[ch
->channel_id
].inputs
)
1288 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1289 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1290 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1293 *timings
= vid_ch
->dv_timings
;
1299 * vpif_log_status() - Status information
1301 * @priv: file handle
1305 static int vpif_log_status(struct file
*filep
, void *priv
)
1307 /* status for sub devices */
1308 v4l2_device_call_all(&vpif_obj
.v4l2_dev
, 0, core
, log_status
);
1313 /* vpif capture ioctl operations */
1314 static const struct v4l2_ioctl_ops vpif_ioctl_ops
= {
1315 .vidioc_querycap
= vpif_querycap
,
1316 .vidioc_enum_fmt_vid_cap
= vpif_enum_fmt_vid_cap
,
1317 .vidioc_g_fmt_vid_cap
= vpif_g_fmt_vid_cap
,
1318 .vidioc_s_fmt_vid_cap
= vpif_s_fmt_vid_cap
,
1319 .vidioc_try_fmt_vid_cap
= vpif_try_fmt_vid_cap
,
1321 .vidioc_enum_input
= vpif_enum_input
,
1322 .vidioc_s_input
= vpif_s_input
,
1323 .vidioc_g_input
= vpif_g_input
,
1325 .vidioc_reqbufs
= vb2_ioctl_reqbufs
,
1326 .vidioc_create_bufs
= vb2_ioctl_create_bufs
,
1327 .vidioc_querybuf
= vb2_ioctl_querybuf
,
1328 .vidioc_qbuf
= vb2_ioctl_qbuf
,
1329 .vidioc_dqbuf
= vb2_ioctl_dqbuf
,
1330 .vidioc_expbuf
= vb2_ioctl_expbuf
,
1331 .vidioc_streamon
= vb2_ioctl_streamon
,
1332 .vidioc_streamoff
= vb2_ioctl_streamoff
,
1334 .vidioc_querystd
= vpif_querystd
,
1335 .vidioc_s_std
= vpif_s_std
,
1336 .vidioc_g_std
= vpif_g_std
,
1338 .vidioc_enum_dv_timings
= vpif_enum_dv_timings
,
1339 .vidioc_query_dv_timings
= vpif_query_dv_timings
,
1340 .vidioc_s_dv_timings
= vpif_s_dv_timings
,
1341 .vidioc_g_dv_timings
= vpif_g_dv_timings
,
1343 .vidioc_log_status
= vpif_log_status
,
1346 /* vpif file operations */
1347 static const struct v4l2_file_operations vpif_fops
= {
1348 .owner
= THIS_MODULE
,
1349 .open
= v4l2_fh_open
,
1350 .release
= vb2_fop_release
,
1351 .unlocked_ioctl
= video_ioctl2
,
1352 .mmap
= vb2_fop_mmap
,
1353 .poll
= vb2_fop_poll
1357 * initialize_vpif() - Initialize vpif data structures
1359 * Allocate memory for data structures and initialize them
1361 static int initialize_vpif(void)
1364 int free_channel_objects_index
;
1366 /* Allocate memory for six channel objects */
1367 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1369 kzalloc(sizeof(*vpif_obj
.dev
[i
]), GFP_KERNEL
);
1370 /* If memory allocation fails, return error */
1371 if (!vpif_obj
.dev
[i
]) {
1372 free_channel_objects_index
= i
;
1374 goto vpif_init_free_channel_objects
;
1379 vpif_init_free_channel_objects
:
1380 for (j
= 0; j
< free_channel_objects_index
; j
++)
1381 kfree(vpif_obj
.dev
[j
]);
1385 static int vpif_async_bound(struct v4l2_async_notifier
*notifier
,
1386 struct v4l2_subdev
*subdev
,
1387 struct v4l2_async_subdev
*asd
)
1391 for (i
= 0; i
< vpif_obj
.config
->asd_sizes
[0]; i
++) {
1392 struct v4l2_async_subdev
*_asd
= vpif_obj
.config
->asd
[i
];
1393 const struct fwnode_handle
*fwnode
= _asd
->match
.fwnode
.fwnode
;
1395 if (fwnode
== subdev
->fwnode
) {
1396 vpif_obj
.sd
[i
] = subdev
;
1397 vpif_obj
.config
->chan_config
->inputs
[i
].subdev_name
=
1398 (char *)to_of_node(subdev
->fwnode
)->full_name
;
1400 "%s: setting input %d subdev_name = %pOF\n",
1402 to_of_node(subdev
->fwnode
));
1407 for (i
= 0; i
< vpif_obj
.config
->subdev_count
; i
++)
1408 if (!strcmp(vpif_obj
.config
->subdev_info
[i
].name
,
1410 vpif_obj
.sd
[i
] = subdev
;
1417 static int vpif_probe_complete(void)
1419 struct common_obj
*common
;
1420 struct video_device
*vdev
;
1421 struct channel_obj
*ch
;
1422 struct vb2_queue
*q
;
1425 for (j
= 0; j
< VPIF_CAPTURE_MAX_DEVICES
; j
++) {
1426 ch
= vpif_obj
.dev
[j
];
1428 common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
1429 spin_lock_init(&common
->irqlock
);
1430 mutex_init(&common
->lock
);
1432 /* select input 0 */
1433 err
= vpif_set_input(vpif_obj
.config
, ch
, 0);
1437 /* set initial format */
1438 ch
->video
.stdid
= V4L2_STD_525_60
;
1439 memset(&ch
->video
.dv_timings
, 0, sizeof(ch
->video
.dv_timings
));
1440 common
->fmt
.type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1441 vpif_update_std_info(ch
);
1443 /* Initialize vb2 queue */
1444 q
= &common
->buffer_queue
;
1445 q
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1446 q
->io_modes
= VB2_MMAP
| VB2_USERPTR
| VB2_DMABUF
;
1448 q
->ops
= &video_qops
;
1449 q
->mem_ops
= &vb2_dma_contig_memops
;
1450 q
->buf_struct_size
= sizeof(struct vpif_cap_buffer
);
1451 q
->timestamp_flags
= V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC
;
1452 q
->min_buffers_needed
= 1;
1453 q
->lock
= &common
->lock
;
1456 err
= vb2_queue_init(q
);
1458 vpif_err("vpif_capture: vb2_queue_init() failed\n");
1462 INIT_LIST_HEAD(&common
->dma_queue
);
1464 /* Initialize the video_device structure */
1465 vdev
= &ch
->video_dev
;
1466 strlcpy(vdev
->name
, VPIF_DRIVER_NAME
, sizeof(vdev
->name
));
1467 vdev
->release
= video_device_release_empty
;
1468 vdev
->fops
= &vpif_fops
;
1469 vdev
->ioctl_ops
= &vpif_ioctl_ops
;
1470 vdev
->v4l2_dev
= &vpif_obj
.v4l2_dev
;
1471 vdev
->vfl_dir
= VFL_DIR_RX
;
1473 vdev
->lock
= &common
->lock
;
1474 video_set_drvdata(&ch
->video_dev
, ch
);
1475 err
= video_register_device(vdev
,
1476 VFL_TYPE_GRABBER
, (j
? 1 : 0));
1481 v4l2_info(&vpif_obj
.v4l2_dev
, "VPIF capture driver initialized\n");
1485 for (k
= 0; k
< j
; k
++) {
1486 /* Get the pointer to the channel object */
1487 ch
= vpif_obj
.dev
[k
];
1488 common
= &ch
->common
[k
];
1489 /* Unregister video device */
1490 video_unregister_device(&ch
->video_dev
);
1493 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
1498 static int vpif_async_complete(struct v4l2_async_notifier
*notifier
)
1500 return vpif_probe_complete();
1503 static const struct v4l2_async_notifier_operations vpif_async_ops
= {
1504 .bound
= vpif_async_bound
,
1505 .complete
= vpif_async_complete
,
1508 static struct vpif_capture_config
*
1509 vpif_capture_get_pdata(struct platform_device
*pdev
)
1511 struct device_node
*endpoint
= NULL
;
1512 struct v4l2_fwnode_endpoint bus_cfg
;
1513 struct vpif_capture_config
*pdata
;
1514 struct vpif_subdev_info
*sdinfo
;
1515 struct vpif_capture_chan_config
*chan
;
1519 * DT boot: OF node from parent device contains
1520 * video ports & endpoints data.
1522 if (pdev
->dev
.parent
&& pdev
->dev
.parent
->of_node
)
1523 pdev
->dev
.of_node
= pdev
->dev
.parent
->of_node
;
1524 if (!IS_ENABLED(CONFIG_OF
) || !pdev
->dev
.of_node
)
1525 return pdev
->dev
.platform_data
;
1527 pdata
= devm_kzalloc(&pdev
->dev
, sizeof(*pdata
), GFP_KERNEL
);
1530 pdata
->subdev_info
=
1531 devm_kzalloc(&pdev
->dev
, sizeof(*pdata
->subdev_info
) *
1532 VPIF_CAPTURE_NUM_CHANNELS
, GFP_KERNEL
);
1534 if (!pdata
->subdev_info
)
1537 for (i
= 0; i
< VPIF_CAPTURE_NUM_CHANNELS
; i
++) {
1538 struct device_node
*rem
;
1542 endpoint
= of_graph_get_next_endpoint(pdev
->dev
.of_node
,
1547 sdinfo
= &pdata
->subdev_info
[i
];
1548 chan
= &pdata
->chan_config
[i
];
1549 chan
->inputs
= devm_kzalloc(&pdev
->dev
,
1550 sizeof(*chan
->inputs
) *
1551 VPIF_CAPTURE_NUM_CHANNELS
,
1554 chan
->input_count
++;
1555 chan
->inputs
[i
].input
.type
= V4L2_INPUT_TYPE_CAMERA
;
1556 chan
->inputs
[i
].input
.std
= V4L2_STD_ALL
;
1557 chan
->inputs
[i
].input
.capabilities
= V4L2_IN_CAP_STD
;
1559 err
= v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint
),
1562 dev_err(&pdev
->dev
, "Could not parse the endpoint\n");
1565 dev_dbg(&pdev
->dev
, "Endpoint %pOF, bus_width = %d\n",
1566 endpoint
, bus_cfg
.bus
.parallel
.bus_width
);
1567 flags
= bus_cfg
.bus
.parallel
.flags
;
1569 if (flags
& V4L2_MBUS_HSYNC_ACTIVE_HIGH
)
1570 chan
->vpif_if
.hd_pol
= 1;
1572 if (flags
& V4L2_MBUS_VSYNC_ACTIVE_HIGH
)
1573 chan
->vpif_if
.vd_pol
= 1;
1575 rem
= of_graph_get_remote_port_parent(endpoint
);
1577 dev_dbg(&pdev
->dev
, "Remote device at %pOF not found\n",
1582 dev_dbg(&pdev
->dev
, "Remote device %s, %pOF found\n",
1584 sdinfo
->name
= rem
->full_name
;
1586 pdata
->asd
[i
] = devm_kzalloc(&pdev
->dev
,
1587 sizeof(struct v4l2_async_subdev
),
1589 if (!pdata
->asd
[i
]) {
1595 pdata
->asd
[i
]->match_type
= V4L2_ASYNC_MATCH_FWNODE
;
1596 pdata
->asd
[i
]->match
.fwnode
.fwnode
= of_fwnode_handle(rem
);
1602 pdata
->asd_sizes
[0] = i
;
1603 pdata
->subdev_count
= i
;
1604 pdata
->card_name
= "DA850/OMAP-L138 Video Capture";
1611 * vpif_probe : This function probes the vpif capture driver
1612 * @pdev: platform device pointer
1614 * This creates device entries by register itself to the V4L2 driver and
1615 * initializes fields of each channel objects
1617 static __init
int vpif_probe(struct platform_device
*pdev
)
1619 struct vpif_subdev_info
*subdevdata
;
1620 struct i2c_adapter
*i2c_adap
;
1621 struct resource
*res
;
1626 pdev
->dev
.platform_data
= vpif_capture_get_pdata(pdev
);
1627 if (!pdev
->dev
.platform_data
) {
1628 dev_warn(&pdev
->dev
, "Missing platform data. Giving up.\n");
1632 if (!pdev
->dev
.platform_data
) {
1633 dev_warn(&pdev
->dev
, "Missing platform data. Giving up.\n");
1637 vpif_dev
= &pdev
->dev
;
1639 err
= initialize_vpif();
1641 v4l2_err(vpif_dev
->driver
, "Error initializing vpif\n");
1645 err
= v4l2_device_register(vpif_dev
, &vpif_obj
.v4l2_dev
);
1647 v4l2_err(vpif_dev
->driver
, "Error registering v4l2 device\n");
1651 while ((res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, res_idx
))) {
1652 err
= devm_request_irq(&pdev
->dev
, res
->start
, vpif_channel_isr
,
1653 IRQF_SHARED
, VPIF_DRIVER_NAME
,
1654 (void *)(&vpif_obj
.dev
[res_idx
]->
1658 goto vpif_unregister
;
1663 vpif_obj
.config
= pdev
->dev
.platform_data
;
1665 subdev_count
= vpif_obj
.config
->subdev_count
;
1666 vpif_obj
.sd
= kcalloc(subdev_count
, sizeof(*vpif_obj
.sd
), GFP_KERNEL
);
1669 goto vpif_unregister
;
1672 if (!vpif_obj
.config
->asd_sizes
[0]) {
1673 int i2c_id
= vpif_obj
.config
->i2c_adapter_id
;
1675 i2c_adap
= i2c_get_adapter(i2c_id
);
1677 for (i
= 0; i
< subdev_count
; i
++) {
1678 subdevdata
= &vpif_obj
.config
->subdev_info
[i
];
1680 v4l2_i2c_new_subdev_board(&vpif_obj
.v4l2_dev
,
1686 if (!vpif_obj
.sd
[i
]) {
1687 vpif_err("Error registering v4l2 subdevice\n");
1689 goto probe_subdev_out
;
1691 v4l2_info(&vpif_obj
.v4l2_dev
,
1692 "registered sub device %s\n",
1695 vpif_probe_complete();
1697 vpif_obj
.notifier
.subdevs
= vpif_obj
.config
->asd
;
1698 vpif_obj
.notifier
.num_subdevs
= vpif_obj
.config
->asd_sizes
[0];
1699 vpif_obj
.notifier
.ops
= &vpif_async_ops
;
1700 err
= v4l2_async_notifier_register(&vpif_obj
.v4l2_dev
,
1701 &vpif_obj
.notifier
);
1703 vpif_err("Error registering async notifier\n");
1705 goto probe_subdev_out
;
1712 /* free sub devices memory */
1715 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
1721 * vpif_remove() - driver remove handler
1722 * @device: ptr to platform device structure
1724 * The vidoe device is unregistered
1726 static int vpif_remove(struct platform_device
*device
)
1728 struct channel_obj
*ch
;
1731 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
1734 /* un-register device */
1735 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1736 /* Get the pointer to the channel object */
1737 ch
= vpif_obj
.dev
[i
];
1738 /* Unregister video device */
1739 video_unregister_device(&ch
->video_dev
);
1740 kfree(vpif_obj
.dev
[i
]);
1745 #ifdef CONFIG_PM_SLEEP
1747 * vpif_suspend: vpif device suspend
1748 * @dev: pointer to &struct device
1750 static int vpif_suspend(struct device
*dev
)
1753 struct common_obj
*common
;
1754 struct channel_obj
*ch
;
1757 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1758 /* Get the pointer to the channel object */
1759 ch
= vpif_obj
.dev
[i
];
1760 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1762 if (!vb2_start_streaming_called(&common
->buffer_queue
))
1765 mutex_lock(&common
->lock
);
1766 /* Disable channel */
1767 if (ch
->channel_id
== VPIF_CHANNEL0_VIDEO
) {
1769 channel0_intr_enable(0);
1771 if (ch
->channel_id
== VPIF_CHANNEL1_VIDEO
||
1774 channel1_intr_enable(0);
1776 mutex_unlock(&common
->lock
);
1783 * vpif_resume: vpif device suspend
1785 static int vpif_resume(struct device
*dev
)
1787 struct common_obj
*common
;
1788 struct channel_obj
*ch
;
1791 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1792 /* Get the pointer to the channel object */
1793 ch
= vpif_obj
.dev
[i
];
1794 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1796 if (!vb2_start_streaming_called(&common
->buffer_queue
))
1799 mutex_lock(&common
->lock
);
1800 /* Enable channel */
1801 if (ch
->channel_id
== VPIF_CHANNEL0_VIDEO
) {
1803 channel0_intr_enable(1);
1805 if (ch
->channel_id
== VPIF_CHANNEL1_VIDEO
||
1808 channel1_intr_enable(1);
1810 mutex_unlock(&common
->lock
);
1817 static SIMPLE_DEV_PM_OPS(vpif_pm_ops
, vpif_suspend
, vpif_resume
);
1819 static __refdata
struct platform_driver vpif_driver
= {
1821 .name
= VPIF_DRIVER_NAME
,
1824 .probe
= vpif_probe
,
1825 .remove
= vpif_remove
,
1828 module_platform_driver(vpif_driver
);