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/platform_device.h>
22 #include <linux/slab.h>
24 #include <media/v4l2-ioctl.h>
27 #include "vpif_capture.h"
29 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
30 MODULE_LICENSE("GPL");
31 MODULE_VERSION(VPIF_CAPTURE_VERSION
);
33 #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
34 #define vpif_dbg(level, debug, fmt, arg...) \
35 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
39 module_param(debug
, int, 0644);
41 MODULE_PARM_DESC(debug
, "Debug level 0-1");
43 #define VPIF_DRIVER_NAME "vpif_capture"
44 MODULE_ALIAS("platform:" VPIF_DRIVER_NAME
);
46 /* global variables */
47 static struct vpif_device vpif_obj
= { {NULL
} };
48 static struct device
*vpif_dev
;
49 static void vpif_calculate_offsets(struct channel_obj
*ch
);
50 static void vpif_config_addr(struct channel_obj
*ch
, int muxmode
);
52 static u8 channel_first_int
[VPIF_NUMBER_OF_OBJECTS
][2] = { {1, 1} };
54 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
55 static int ycmux_mode
;
58 struct vpif_cap_buffer
*to_vpif_buffer(struct vb2_v4l2_buffer
*vb
)
60 return container_of(vb
, struct vpif_cap_buffer
, vb
);
64 * vpif_buffer_prepare : callback function for buffer prepare
65 * @vb: ptr to vb2_buffer
67 * This is the callback function for buffer prepare when vb2_qbuf()
68 * function is called. The buffer is prepared and user space virtual address
69 * or user address is converted into physical address
71 static int vpif_buffer_prepare(struct vb2_buffer
*vb
)
73 struct vb2_v4l2_buffer
*vbuf
= to_vb2_v4l2_buffer(vb
);
74 struct vb2_queue
*q
= vb
->vb2_queue
;
75 struct channel_obj
*ch
= vb2_get_drv_priv(q
);
76 struct common_obj
*common
;
79 vpif_dbg(2, debug
, "vpif_buffer_prepare\n");
81 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
83 vb2_set_plane_payload(vb
, 0, common
->fmt
.fmt
.pix
.sizeimage
);
84 if (vb2_get_plane_payload(vb
, 0) > vb2_plane_size(vb
, 0))
87 vbuf
->field
= common
->fmt
.fmt
.pix
.field
;
89 addr
= vb2_dma_contig_plane_dma_addr(vb
, 0);
90 if (!IS_ALIGNED((addr
+ common
->ytop_off
), 8) ||
91 !IS_ALIGNED((addr
+ common
->ybtm_off
), 8) ||
92 !IS_ALIGNED((addr
+ common
->ctop_off
), 8) ||
93 !IS_ALIGNED((addr
+ common
->cbtm_off
), 8)) {
94 vpif_dbg(1, debug
, "offset is not aligned\n");
102 * vpif_buffer_queue_setup : Callback function for buffer setup.
104 * @nbuffers: ptr to number of buffers requested by application
105 * @nplanes:: contains number of distinct video planes needed to hold a frame
106 * @sizes[]: contains the size (in bytes) of each plane.
107 * @alloc_devs: ptr to allocation context
109 * This callback function is called when reqbuf() is called to adjust
110 * the buffer count and buffer size
112 static int vpif_buffer_queue_setup(struct vb2_queue
*vq
,
113 unsigned int *nbuffers
, unsigned int *nplanes
,
114 unsigned int sizes
[], struct device
*alloc_devs
[])
116 struct channel_obj
*ch
= vb2_get_drv_priv(vq
);
117 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
118 unsigned size
= common
->fmt
.fmt
.pix
.sizeimage
;
120 vpif_dbg(2, debug
, "vpif_buffer_setup\n");
128 if (vq
->num_buffers
+ *nbuffers
< 3)
129 *nbuffers
= 3 - vq
->num_buffers
;
134 /* Calculate the offset for Y and C data in the buffer */
135 vpif_calculate_offsets(ch
);
141 * vpif_buffer_queue : Callback function to add buffer to DMA queue
142 * @vb: ptr to vb2_buffer
144 static void vpif_buffer_queue(struct vb2_buffer
*vb
)
146 struct vb2_v4l2_buffer
*vbuf
= to_vb2_v4l2_buffer(vb
);
147 struct channel_obj
*ch
= vb2_get_drv_priv(vb
->vb2_queue
);
148 struct vpif_cap_buffer
*buf
= to_vpif_buffer(vbuf
);
149 struct common_obj
*common
;
152 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
154 vpif_dbg(2, debug
, "vpif_buffer_queue\n");
156 spin_lock_irqsave(&common
->irqlock
, flags
);
157 /* add the buffer to the DMA queue */
158 list_add_tail(&buf
->list
, &common
->dma_queue
);
159 spin_unlock_irqrestore(&common
->irqlock
, flags
);
163 * vpif_start_streaming : Starts the DMA engine for streaming
164 * @vb: ptr to vb2_buffer
165 * @count: number of buffers
167 static int vpif_start_streaming(struct vb2_queue
*vq
, unsigned int count
)
169 struct vpif_capture_config
*vpif_config_data
=
170 vpif_dev
->platform_data
;
171 struct channel_obj
*ch
= vb2_get_drv_priv(vq
);
172 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
173 struct vpif_params
*vpif
= &ch
->vpifparams
;
174 struct vpif_cap_buffer
*buf
, *tmp
;
175 unsigned long addr
, flags
;
178 /* Initialize field_id */
181 /* configure 1 or 2 channel mode */
182 if (vpif_config_data
->setup_input_channel_mode
) {
183 ret
= vpif_config_data
->
184 setup_input_channel_mode(vpif
->std_info
.ycmux_mode
);
186 vpif_dbg(1, debug
, "can't set vpif channel mode\n");
191 ret
= v4l2_subdev_call(ch
->sd
, video
, s_stream
, 1);
192 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
) {
193 vpif_dbg(1, debug
, "stream on failed in subdev\n");
197 /* Call vpif_set_params function to set the parameters and addresses */
198 ret
= vpif_set_video_params(vpif
, ch
->channel_id
);
200 vpif_dbg(1, debug
, "can't set video params\n");
205 vpif_config_addr(ch
, ret
);
207 /* Get the next frame from the buffer queue */
208 spin_lock_irqsave(&common
->irqlock
, flags
);
209 common
->cur_frm
= common
->next_frm
= list_entry(common
->dma_queue
.next
,
210 struct vpif_cap_buffer
, list
);
211 /* Remove buffer from the buffer queue */
212 list_del(&common
->cur_frm
->list
);
213 spin_unlock_irqrestore(&common
->irqlock
, flags
);
215 addr
= vb2_dma_contig_plane_dma_addr(&common
->cur_frm
->vb
.vb2_buf
, 0);
217 common
->set_addr(addr
+ common
->ytop_off
,
218 addr
+ common
->ybtm_off
,
219 addr
+ common
->ctop_off
,
220 addr
+ common
->cbtm_off
);
223 * Set interrupt for both the fields in VPIF Register enable channel in
226 channel_first_int
[VPIF_VIDEO_INDEX
][ch
->channel_id
] = 1;
227 if (VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) {
228 channel0_intr_assert();
229 channel0_intr_enable(1);
232 if (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
||
234 channel1_intr_assert();
235 channel1_intr_enable(1);
242 spin_lock_irqsave(&common
->irqlock
, flags
);
243 list_for_each_entry_safe(buf
, tmp
, &common
->dma_queue
, list
) {
244 list_del(&buf
->list
);
245 vb2_buffer_done(&buf
->vb
.vb2_buf
, VB2_BUF_STATE_QUEUED
);
247 spin_unlock_irqrestore(&common
->irqlock
, flags
);
253 * vpif_stop_streaming : Stop the DMA engine
254 * @vq: ptr to vb2_queue
256 * This callback stops the DMA engine and any remaining buffers
257 * in the DMA queue are released.
259 static void vpif_stop_streaming(struct vb2_queue
*vq
)
261 struct channel_obj
*ch
= vb2_get_drv_priv(vq
);
262 struct common_obj
*common
;
266 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
268 /* Disable channel as per its device type and channel id */
269 if (VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) {
271 channel0_intr_enable(0);
273 if (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
||
276 channel1_intr_enable(0);
281 ret
= v4l2_subdev_call(ch
->sd
, video
, s_stream
, 0);
282 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
)
283 vpif_dbg(1, debug
, "stream off failed in subdev\n");
285 /* release all active buffers */
286 if (common
->cur_frm
== common
->next_frm
) {
287 vb2_buffer_done(&common
->cur_frm
->vb
.vb2_buf
,
288 VB2_BUF_STATE_ERROR
);
291 vb2_buffer_done(&common
->cur_frm
->vb
.vb2_buf
,
292 VB2_BUF_STATE_ERROR
);
293 if (common
->next_frm
)
294 vb2_buffer_done(&common
->next_frm
->vb
.vb2_buf
,
295 VB2_BUF_STATE_ERROR
);
298 spin_lock_irqsave(&common
->irqlock
, flags
);
299 while (!list_empty(&common
->dma_queue
)) {
300 common
->next_frm
= list_entry(common
->dma_queue
.next
,
301 struct vpif_cap_buffer
, list
);
302 list_del(&common
->next_frm
->list
);
303 vb2_buffer_done(&common
->next_frm
->vb
.vb2_buf
,
304 VB2_BUF_STATE_ERROR
);
306 spin_unlock_irqrestore(&common
->irqlock
, flags
);
309 static struct vb2_ops video_qops
= {
310 .queue_setup
= vpif_buffer_queue_setup
,
311 .buf_prepare
= vpif_buffer_prepare
,
312 .start_streaming
= vpif_start_streaming
,
313 .stop_streaming
= vpif_stop_streaming
,
314 .buf_queue
= vpif_buffer_queue
,
315 .wait_prepare
= vb2_ops_wait_prepare
,
316 .wait_finish
= vb2_ops_wait_finish
,
320 * vpif_process_buffer_complete: process a completed buffer
321 * @common: ptr to common channel object
323 * This function time stamp the buffer and mark it as DONE. It also
324 * wake up any process waiting on the QUEUE and set the next buffer
327 static void vpif_process_buffer_complete(struct common_obj
*common
)
329 common
->cur_frm
->vb
.vb2_buf
.timestamp
= ktime_get_ns();
330 vb2_buffer_done(&common
->cur_frm
->vb
.vb2_buf
, VB2_BUF_STATE_DONE
);
331 /* Make curFrm pointing to nextFrm */
332 common
->cur_frm
= common
->next_frm
;
336 * vpif_schedule_next_buffer: set next buffer address for capture
337 * @common : ptr to common channel object
339 * This function will get next buffer from the dma queue and
340 * set the buffer address in the vpif register for capture.
341 * the buffer is marked active
343 static void vpif_schedule_next_buffer(struct common_obj
*common
)
345 unsigned long addr
= 0;
347 spin_lock(&common
->irqlock
);
348 common
->next_frm
= list_entry(common
->dma_queue
.next
,
349 struct vpif_cap_buffer
, list
);
350 /* Remove that buffer from the buffer queue */
351 list_del(&common
->next_frm
->list
);
352 spin_unlock(&common
->irqlock
);
353 addr
= vb2_dma_contig_plane_dma_addr(&common
->next_frm
->vb
.vb2_buf
, 0);
355 /* Set top and bottom field addresses in VPIF registers */
356 common
->set_addr(addr
+ common
->ytop_off
,
357 addr
+ common
->ybtm_off
,
358 addr
+ common
->ctop_off
,
359 addr
+ common
->cbtm_off
);
363 * vpif_channel_isr : ISR handler for vpif capture
365 * @dev_id: dev_id ptr
367 * It changes status of the captured buffer, takes next buffer from the queue
368 * and sets its address in VPIF registers
370 static irqreturn_t
vpif_channel_isr(int irq
, void *dev_id
)
372 struct vpif_device
*dev
= &vpif_obj
;
373 struct common_obj
*common
;
374 struct channel_obj
*ch
;
378 channel_id
= *(int *)(dev_id
);
379 if (!vpif_intr_status(channel_id
))
382 ch
= dev
->dev
[channel_id
];
384 for (i
= 0; i
< VPIF_NUMBER_OF_OBJECTS
; i
++) {
385 common
= &ch
->common
[i
];
386 /* skip If streaming is not started in this channel */
387 /* Check the field format */
388 if (1 == ch
->vpifparams
.std_info
.frm_fmt
) {
389 /* Progressive mode */
390 spin_lock(&common
->irqlock
);
391 if (list_empty(&common
->dma_queue
)) {
392 spin_unlock(&common
->irqlock
);
395 spin_unlock(&common
->irqlock
);
397 if (!channel_first_int
[i
][channel_id
])
398 vpif_process_buffer_complete(common
);
400 channel_first_int
[i
][channel_id
] = 0;
402 vpif_schedule_next_buffer(common
);
405 channel_first_int
[i
][channel_id
] = 0;
408 * Interlaced mode. If it is first interrupt, ignore
411 if (channel_first_int
[i
][channel_id
]) {
412 channel_first_int
[i
][channel_id
] = 0;
417 /* Get field id from VPIF registers */
418 fid
= vpif_channel_getfid(ch
->channel_id
);
419 if (fid
!= ch
->field_id
) {
421 * If field id does not match stored
422 * field id, make them in sync
429 /* device field id and local field id are in sync */
431 /* this is even field */
432 if (common
->cur_frm
== common
->next_frm
)
435 /* mark the current buffer as done */
436 vpif_process_buffer_complete(common
);
437 } else if (1 == fid
) {
439 spin_lock(&common
->irqlock
);
440 if (list_empty(&common
->dma_queue
) ||
441 (common
->cur_frm
!= common
->next_frm
)) {
442 spin_unlock(&common
->irqlock
);
445 spin_unlock(&common
->irqlock
);
447 vpif_schedule_next_buffer(common
);
455 * vpif_update_std_info() - update standard related info
456 * @ch: ptr to channel object
458 * For a given standard selected by application, update values
459 * in the device data structures
461 static int vpif_update_std_info(struct channel_obj
*ch
)
463 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
464 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
465 const struct vpif_channel_config_params
*config
;
466 struct vpif_channel_config_params
*std_info
= &vpifparams
->std_info
;
467 struct video_obj
*vid_ch
= &ch
->video
;
470 vpif_dbg(2, debug
, "vpif_update_std_info\n");
472 for (index
= 0; index
< vpif_ch_params_count
; index
++) {
473 config
= &vpif_ch_params
[index
];
474 if (config
->hd_sd
== 0) {
475 vpif_dbg(2, debug
, "SD format\n");
476 if (config
->stdid
& vid_ch
->stdid
) {
477 memcpy(std_info
, config
, sizeof(*config
));
481 vpif_dbg(2, debug
, "HD format\n");
482 if (!memcmp(&config
->dv_timings
, &vid_ch
->dv_timings
,
483 sizeof(vid_ch
->dv_timings
))) {
484 memcpy(std_info
, config
, sizeof(*config
));
490 /* standard not found */
491 if (index
== vpif_ch_params_count
)
494 common
->fmt
.fmt
.pix
.width
= std_info
->width
;
495 common
->width
= std_info
->width
;
496 common
->fmt
.fmt
.pix
.height
= std_info
->height
;
497 common
->height
= std_info
->height
;
498 common
->fmt
.fmt
.pix
.sizeimage
= common
->height
* common
->width
* 2;
499 common
->fmt
.fmt
.pix
.bytesperline
= std_info
->width
;
500 vpifparams
->video_params
.hpitch
= std_info
->width
;
501 vpifparams
->video_params
.storage_mode
= std_info
->frm_fmt
;
504 common
->fmt
.fmt
.pix
.colorspace
= V4L2_COLORSPACE_SMPTE170M
;
506 common
->fmt
.fmt
.pix
.colorspace
= V4L2_COLORSPACE_REC709
;
508 if (ch
->vpifparams
.std_info
.frm_fmt
)
509 common
->fmt
.fmt
.pix
.field
= V4L2_FIELD_NONE
;
511 common
->fmt
.fmt
.pix
.field
= V4L2_FIELD_INTERLACED
;
513 if (ch
->vpifparams
.iface
.if_type
== VPIF_IF_RAW_BAYER
)
514 common
->fmt
.fmt
.pix
.pixelformat
= V4L2_PIX_FMT_SBGGR8
;
516 common
->fmt
.fmt
.pix
.pixelformat
= V4L2_PIX_FMT_YUV422P
;
518 common
->fmt
.type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
524 * vpif_calculate_offsets : This function calculates buffers offsets
525 * @ch : ptr to channel object
527 * This function calculates buffer offsets for Y and C in the top and
530 static void vpif_calculate_offsets(struct channel_obj
*ch
)
532 unsigned int hpitch
, sizeimage
;
533 struct video_obj
*vid_ch
= &(ch
->video
);
534 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
535 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
536 enum v4l2_field field
= common
->fmt
.fmt
.pix
.field
;
538 vpif_dbg(2, debug
, "vpif_calculate_offsets\n");
540 if (V4L2_FIELD_ANY
== field
) {
541 if (vpifparams
->std_info
.frm_fmt
)
542 vid_ch
->buf_field
= V4L2_FIELD_NONE
;
544 vid_ch
->buf_field
= V4L2_FIELD_INTERLACED
;
546 vid_ch
->buf_field
= common
->fmt
.fmt
.pix
.field
;
548 sizeimage
= common
->fmt
.fmt
.pix
.sizeimage
;
550 hpitch
= common
->fmt
.fmt
.pix
.bytesperline
;
552 if ((V4L2_FIELD_NONE
== vid_ch
->buf_field
) ||
553 (V4L2_FIELD_INTERLACED
== vid_ch
->buf_field
)) {
554 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
555 common
->ytop_off
= 0;
556 common
->ybtm_off
= hpitch
;
557 common
->ctop_off
= sizeimage
/ 2;
558 common
->cbtm_off
= sizeimage
/ 2 + hpitch
;
559 } else if (V4L2_FIELD_SEQ_TB
== vid_ch
->buf_field
) {
560 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
561 common
->ytop_off
= 0;
562 common
->ybtm_off
= sizeimage
/ 4;
563 common
->ctop_off
= sizeimage
/ 2;
564 common
->cbtm_off
= common
->ctop_off
+ sizeimage
/ 4;
565 } else if (V4L2_FIELD_SEQ_BT
== vid_ch
->buf_field
) {
566 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
567 common
->ybtm_off
= 0;
568 common
->ytop_off
= sizeimage
/ 4;
569 common
->cbtm_off
= sizeimage
/ 2;
570 common
->ctop_off
= common
->cbtm_off
+ sizeimage
/ 4;
572 if ((V4L2_FIELD_NONE
== vid_ch
->buf_field
) ||
573 (V4L2_FIELD_INTERLACED
== vid_ch
->buf_field
))
574 vpifparams
->video_params
.storage_mode
= 1;
576 vpifparams
->video_params
.storage_mode
= 0;
578 if (1 == vpifparams
->std_info
.frm_fmt
)
579 vpifparams
->video_params
.hpitch
=
580 common
->fmt
.fmt
.pix
.bytesperline
;
582 if ((field
== V4L2_FIELD_ANY
)
583 || (field
== V4L2_FIELD_INTERLACED
))
584 vpifparams
->video_params
.hpitch
=
585 common
->fmt
.fmt
.pix
.bytesperline
* 2;
587 vpifparams
->video_params
.hpitch
=
588 common
->fmt
.fmt
.pix
.bytesperline
;
591 ch
->vpifparams
.video_params
.stdid
= vpifparams
->std_info
.stdid
;
595 * vpif_get_default_field() - Get default field type based on interface
596 * @vpif_params - ptr to vpif params
598 static inline enum v4l2_field
vpif_get_default_field(
599 struct vpif_interface
*iface
)
601 return (iface
->if_type
== VPIF_IF_RAW_BAYER
) ? V4L2_FIELD_NONE
:
602 V4L2_FIELD_INTERLACED
;
606 * vpif_config_addr() - function to configure buffer address in vpif
608 * @muxmode - channel mux mode
610 static void vpif_config_addr(struct channel_obj
*ch
, int muxmode
)
612 struct common_obj
*common
;
614 vpif_dbg(2, debug
, "vpif_config_addr\n");
616 common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
618 if (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)
619 common
->set_addr
= ch1_set_videobuf_addr
;
620 else if (2 == muxmode
)
621 common
->set_addr
= ch0_set_videobuf_addr_yc_nmux
;
623 common
->set_addr
= ch0_set_videobuf_addr
;
627 * vpif_input_to_subdev() - Maps input to sub device
628 * @vpif_cfg - global config ptr
629 * @chan_cfg - channel config ptr
630 * @input_index - Given input index from application
632 * lookup the sub device information for a given input index.
633 * we report all the inputs to application. inputs table also
634 * has sub device name for the each input
636 static int vpif_input_to_subdev(
637 struct vpif_capture_config
*vpif_cfg
,
638 struct vpif_capture_chan_config
*chan_cfg
,
641 struct vpif_subdev_info
*subdev_info
;
642 const char *subdev_name
;
645 vpif_dbg(2, debug
, "vpif_input_to_subdev\n");
649 if (input_index
>= chan_cfg
->input_count
)
651 subdev_name
= chan_cfg
->inputs
[input_index
].subdev_name
;
655 /* loop through the sub device list to get the sub device info */
656 for (i
= 0; i
< vpif_cfg
->subdev_count
; i
++) {
657 subdev_info
= &vpif_cfg
->subdev_info
[i
];
658 if (!strcmp(subdev_info
->name
, subdev_name
))
665 * vpif_set_input() - Select an input
666 * @vpif_cfg - global config ptr
668 * @_index - Given input index from application
670 * Select the given input.
672 static int vpif_set_input(
673 struct vpif_capture_config
*vpif_cfg
,
674 struct channel_obj
*ch
,
677 struct vpif_capture_chan_config
*chan_cfg
=
678 &vpif_cfg
->chan_config
[ch
->channel_id
];
679 struct vpif_subdev_info
*subdev_info
= NULL
;
680 struct v4l2_subdev
*sd
= NULL
;
681 u32 input
= 0, output
= 0;
685 sd_index
= vpif_input_to_subdev(vpif_cfg
, chan_cfg
, index
);
687 sd
= vpif_obj
.sd
[sd_index
];
688 subdev_info
= &vpif_cfg
->subdev_info
[sd_index
];
690 /* no subdevice, no input to setup */
694 /* first setup input path from sub device to vpif */
695 if (sd
&& vpif_cfg
->setup_input_path
) {
696 ret
= vpif_cfg
->setup_input_path(ch
->channel_id
,
699 vpif_dbg(1, debug
, "couldn't setup input path for the" \
700 " sub device %s, for input index %d\n",
701 subdev_info
->name
, index
);
707 input
= chan_cfg
->inputs
[index
].input_route
;
708 output
= chan_cfg
->inputs
[index
].output_route
;
709 ret
= v4l2_subdev_call(sd
, video
, s_routing
,
711 if (ret
< 0 && ret
!= -ENOIOCTLCMD
) {
712 vpif_dbg(1, debug
, "Failed to set input\n");
716 ch
->input_idx
= index
;
718 /* copy interface parameters to vpif */
719 ch
->vpifparams
.iface
= chan_cfg
->vpif_if
;
721 /* update tvnorms from the sub device input info */
722 ch
->video_dev
.tvnorms
= chan_cfg
->inputs
[index
].input
.std
;
727 * vpif_querystd() - querystd handler
730 * @std_id: ptr to std id
732 * This function is called to detect standard at the selected input
734 static int vpif_querystd(struct file
*file
, void *priv
, v4l2_std_id
*std_id
)
736 struct video_device
*vdev
= video_devdata(file
);
737 struct channel_obj
*ch
= video_get_drvdata(vdev
);
740 vpif_dbg(2, debug
, "vpif_querystd\n");
742 /* Call querystd function of decoder device */
743 ret
= v4l2_subdev_call(ch
->sd
, video
, querystd
, std_id
);
745 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
748 vpif_dbg(1, debug
, "Failed to query standard for sub devices\n");
756 * vpif_g_std() - get STD handler
759 * @std_id: ptr to std id
761 static int vpif_g_std(struct file
*file
, void *priv
, v4l2_std_id
*std
)
763 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
764 struct video_device
*vdev
= video_devdata(file
);
765 struct channel_obj
*ch
= video_get_drvdata(vdev
);
766 struct vpif_capture_chan_config
*chan_cfg
;
767 struct v4l2_input input
;
769 vpif_dbg(2, debug
, "vpif_g_std\n");
771 if (!config
->chan_config
[ch
->channel_id
].inputs
)
774 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
775 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
776 if (input
.capabilities
!= V4L2_IN_CAP_STD
)
779 *std
= ch
->video
.stdid
;
784 * vpif_s_std() - set STD handler
787 * @std_id: ptr to std id
789 static int vpif_s_std(struct file
*file
, void *priv
, v4l2_std_id std_id
)
791 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
792 struct video_device
*vdev
= video_devdata(file
);
793 struct channel_obj
*ch
= video_get_drvdata(vdev
);
794 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
795 struct vpif_capture_chan_config
*chan_cfg
;
796 struct v4l2_input input
;
799 vpif_dbg(2, debug
, "vpif_s_std\n");
801 if (!config
->chan_config
[ch
->channel_id
].inputs
)
804 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
805 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
806 if (input
.capabilities
!= V4L2_IN_CAP_STD
)
809 if (vb2_is_busy(&common
->buffer_queue
))
812 /* Call encoder subdevice function to set the standard */
813 ch
->video
.stdid
= std_id
;
814 memset(&ch
->video
.dv_timings
, 0, sizeof(ch
->video
.dv_timings
));
816 /* Get the information about the standard */
817 if (vpif_update_std_info(ch
)) {
818 vpif_err("Error getting the standard info\n");
822 /* set standard in the sub device */
823 ret
= v4l2_subdev_call(ch
->sd
, video
, s_std
, std_id
);
824 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
) {
825 vpif_dbg(1, debug
, "Failed to set standard for sub devices\n");
832 * vpif_enum_input() - ENUMINPUT handler
835 * @input: ptr to input structure
837 static int vpif_enum_input(struct file
*file
, void *priv
,
838 struct v4l2_input
*input
)
841 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
842 struct video_device
*vdev
= video_devdata(file
);
843 struct channel_obj
*ch
= video_get_drvdata(vdev
);
844 struct vpif_capture_chan_config
*chan_cfg
;
846 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
848 if (input
->index
>= chan_cfg
->input_count
)
851 memcpy(input
, &chan_cfg
->inputs
[input
->index
].input
,
857 * vpif_g_input() - Get INPUT handler
860 * @index: ptr to input index
862 static int vpif_g_input(struct file
*file
, void *priv
, unsigned int *index
)
864 struct video_device
*vdev
= video_devdata(file
);
865 struct channel_obj
*ch
= video_get_drvdata(vdev
);
867 *index
= ch
->input_idx
;
872 * vpif_s_input() - Set INPUT handler
875 * @index: input index
877 static int vpif_s_input(struct file
*file
, void *priv
, unsigned int index
)
879 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
880 struct video_device
*vdev
= video_devdata(file
);
881 struct channel_obj
*ch
= video_get_drvdata(vdev
);
882 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
883 struct vpif_capture_chan_config
*chan_cfg
;
885 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
887 if (index
>= chan_cfg
->input_count
)
890 if (vb2_is_busy(&common
->buffer_queue
))
893 return vpif_set_input(config
, ch
, index
);
897 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
900 * @index: input index
902 static int vpif_enum_fmt_vid_cap(struct file
*file
, void *priv
,
903 struct v4l2_fmtdesc
*fmt
)
905 struct video_device
*vdev
= video_devdata(file
);
906 struct channel_obj
*ch
= video_get_drvdata(vdev
);
908 if (fmt
->index
!= 0) {
909 vpif_dbg(1, debug
, "Invalid format index\n");
913 /* Fill in the information about format */
914 if (ch
->vpifparams
.iface
.if_type
== VPIF_IF_RAW_BAYER
) {
915 fmt
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
916 strcpy(fmt
->description
, "Raw Mode -Bayer Pattern GrRBGb");
917 fmt
->pixelformat
= V4L2_PIX_FMT_SBGGR8
;
919 fmt
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
920 strcpy(fmt
->description
, "YCbCr4:2:2 YC Planar");
921 fmt
->pixelformat
= V4L2_PIX_FMT_YUV422P
;
927 * vpif_try_fmt_vid_cap() - TRY_FMT handler
930 * @fmt: ptr to v4l2 format structure
932 static int vpif_try_fmt_vid_cap(struct file
*file
, void *priv
,
933 struct v4l2_format
*fmt
)
935 struct video_device
*vdev
= video_devdata(file
);
936 struct channel_obj
*ch
= video_get_drvdata(vdev
);
937 struct v4l2_pix_format
*pixfmt
= &fmt
->fmt
.pix
;
938 struct common_obj
*common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
939 struct vpif_params
*vpif_params
= &ch
->vpifparams
;
942 * to supress v4l-compliance warnings silently correct
945 if (vpif_params
->iface
.if_type
== VPIF_IF_RAW_BAYER
) {
946 if (pixfmt
->pixelformat
!= V4L2_PIX_FMT_SBGGR8
)
947 pixfmt
->pixelformat
= V4L2_PIX_FMT_SBGGR8
;
949 if (pixfmt
->pixelformat
!= V4L2_PIX_FMT_YUV422P
)
950 pixfmt
->pixelformat
= V4L2_PIX_FMT_YUV422P
;
953 common
->fmt
.fmt
.pix
.pixelformat
= pixfmt
->pixelformat
;
955 vpif_update_std_info(ch
);
957 pixfmt
->field
= common
->fmt
.fmt
.pix
.field
;
958 pixfmt
->colorspace
= common
->fmt
.fmt
.pix
.colorspace
;
959 pixfmt
->bytesperline
= common
->fmt
.fmt
.pix
.width
;
960 pixfmt
->width
= common
->fmt
.fmt
.pix
.width
;
961 pixfmt
->height
= common
->fmt
.fmt
.pix
.height
;
962 pixfmt
->sizeimage
= pixfmt
->bytesperline
* pixfmt
->height
* 2;
970 * vpif_g_fmt_vid_cap() - Set INPUT handler
973 * @fmt: ptr to v4l2 format structure
975 static int vpif_g_fmt_vid_cap(struct file
*file
, void *priv
,
976 struct v4l2_format
*fmt
)
978 struct video_device
*vdev
= video_devdata(file
);
979 struct channel_obj
*ch
= video_get_drvdata(vdev
);
980 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
982 /* Check the validity of the buffer type */
983 if (common
->fmt
.type
!= fmt
->type
)
986 /* Fill in the information about format */
992 * vpif_s_fmt_vid_cap() - Set FMT handler
995 * @fmt: ptr to v4l2 format structure
997 static int vpif_s_fmt_vid_cap(struct file
*file
, void *priv
,
998 struct v4l2_format
*fmt
)
1000 struct video_device
*vdev
= video_devdata(file
);
1001 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1002 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1005 vpif_dbg(2, debug
, "%s\n", __func__
);
1007 if (vb2_is_busy(&common
->buffer_queue
))
1010 ret
= vpif_try_fmt_vid_cap(file
, priv
, fmt
);
1014 /* store the format in the channel object */
1020 * vpif_querycap() - QUERYCAP handler
1022 * @priv: file handle
1023 * @cap: ptr to v4l2_capability structure
1025 static int vpif_querycap(struct file
*file
, void *priv
,
1026 struct v4l2_capability
*cap
)
1028 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1030 cap
->device_caps
= V4L2_CAP_VIDEO_CAPTURE
| V4L2_CAP_STREAMING
;
1031 cap
->capabilities
= cap
->device_caps
| V4L2_CAP_DEVICE_CAPS
;
1032 strlcpy(cap
->driver
, VPIF_DRIVER_NAME
, sizeof(cap
->driver
));
1033 snprintf(cap
->bus_info
, sizeof(cap
->bus_info
), "platform:%s",
1034 dev_name(vpif_dev
));
1035 strlcpy(cap
->card
, config
->card_name
, sizeof(cap
->card
));
1041 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1043 * @priv: file handle
1044 * @timings: input timings
1047 vpif_enum_dv_timings(struct file
*file
, void *priv
,
1048 struct v4l2_enum_dv_timings
*timings
)
1050 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1051 struct video_device
*vdev
= video_devdata(file
);
1052 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1053 struct vpif_capture_chan_config
*chan_cfg
;
1054 struct v4l2_input input
;
1057 if (!config
->chan_config
[ch
->channel_id
].inputs
)
1060 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1061 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1062 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1067 ret
= v4l2_subdev_call(ch
->sd
, pad
, enum_dv_timings
, timings
);
1068 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
1075 * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1077 * @priv: file handle
1078 * @timings: input timings
1081 vpif_query_dv_timings(struct file
*file
, void *priv
,
1082 struct v4l2_dv_timings
*timings
)
1084 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1085 struct video_device
*vdev
= video_devdata(file
);
1086 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1087 struct vpif_capture_chan_config
*chan_cfg
;
1088 struct v4l2_input input
;
1091 if (!config
->chan_config
[ch
->channel_id
].inputs
)
1094 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1095 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1096 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1099 ret
= v4l2_subdev_call(ch
->sd
, video
, query_dv_timings
, timings
);
1100 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
1107 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1109 * @priv: file handle
1110 * @timings: digital video timings
1112 static int vpif_s_dv_timings(struct file
*file
, void *priv
,
1113 struct v4l2_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_params
*vpifparams
= &ch
->vpifparams
;
1119 struct vpif_channel_config_params
*std_info
= &vpifparams
->std_info
;
1120 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1121 struct video_obj
*vid_ch
= &ch
->video
;
1122 struct v4l2_bt_timings
*bt
= &vid_ch
->dv_timings
.bt
;
1123 struct vpif_capture_chan_config
*chan_cfg
;
1124 struct v4l2_input input
;
1127 if (!config
->chan_config
[ch
->channel_id
].inputs
)
1130 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1131 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1132 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1135 if (timings
->type
!= V4L2_DV_BT_656_1120
) {
1136 vpif_dbg(2, debug
, "Timing type not defined\n");
1140 if (vb2_is_busy(&common
->buffer_queue
))
1143 /* Configure subdevice timings, if any */
1144 ret
= v4l2_subdev_call(ch
->sd
, video
, s_dv_timings
, timings
);
1145 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
1148 vpif_dbg(2, debug
, "Error setting custom DV timings\n");
1152 if (!(timings
->bt
.width
&& timings
->bt
.height
&&
1153 (timings
->bt
.hbackporch
||
1154 timings
->bt
.hfrontporch
||
1155 timings
->bt
.hsync
) &&
1156 timings
->bt
.vfrontporch
&&
1157 (timings
->bt
.vbackporch
||
1158 timings
->bt
.vsync
))) {
1159 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");
1163 vid_ch
->dv_timings
= *timings
;
1165 /* Configure video port timings */
1167 std_info
->eav2sav
= V4L2_DV_BT_BLANKING_WIDTH(bt
) - 8;
1168 std_info
->sav2eav
= bt
->width
;
1171 std_info
->l3
= bt
->vsync
+ bt
->vbackporch
+ 1;
1173 std_info
->vsize
= V4L2_DV_BT_FRAME_HEIGHT(bt
);
1174 if (bt
->interlaced
) {
1175 if (bt
->il_vbackporch
|| bt
->il_vfrontporch
|| bt
->il_vsync
) {
1176 std_info
->l5
= std_info
->vsize
/2 -
1177 (bt
->vfrontporch
- 1);
1178 std_info
->l7
= std_info
->vsize
/2 + 1;
1179 std_info
->l9
= std_info
->l7
+ bt
->il_vsync
+
1180 bt
->il_vbackporch
+ 1;
1181 std_info
->l11
= std_info
->vsize
-
1182 (bt
->il_vfrontporch
- 1);
1184 vpif_dbg(2, debug
, "Required timing values for interlaced BT format missing\n");
1188 std_info
->l5
= std_info
->vsize
- (bt
->vfrontporch
- 1);
1190 strncpy(std_info
->name
, "Custom timings BT656/1120", VPIF_MAX_NAME
);
1191 std_info
->width
= bt
->width
;
1192 std_info
->height
= bt
->height
;
1193 std_info
->frm_fmt
= bt
->interlaced
? 0 : 1;
1194 std_info
->ycmux_mode
= 0;
1195 std_info
->capture_format
= 0;
1196 std_info
->vbi_supported
= 0;
1197 std_info
->hd_sd
= 1;
1198 std_info
->stdid
= 0;
1205 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1207 * @priv: file handle
1208 * @timings: digital video timings
1210 static int vpif_g_dv_timings(struct file
*file
, void *priv
,
1211 struct v4l2_dv_timings
*timings
)
1213 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1214 struct video_device
*vdev
= video_devdata(file
);
1215 struct channel_obj
*ch
= video_get_drvdata(vdev
);
1216 struct video_obj
*vid_ch
= &ch
->video
;
1217 struct vpif_capture_chan_config
*chan_cfg
;
1218 struct v4l2_input input
;
1220 if (!config
->chan_config
[ch
->channel_id
].inputs
)
1223 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1224 input
= chan_cfg
->inputs
[ch
->input_idx
].input
;
1225 if (input
.capabilities
!= V4L2_IN_CAP_DV_TIMINGS
)
1228 *timings
= vid_ch
->dv_timings
;
1234 * vpif_log_status() - Status information
1236 * @priv: file handle
1240 static int vpif_log_status(struct file
*filep
, void *priv
)
1242 /* status for sub devices */
1243 v4l2_device_call_all(&vpif_obj
.v4l2_dev
, 0, core
, log_status
);
1248 /* vpif capture ioctl operations */
1249 static const struct v4l2_ioctl_ops vpif_ioctl_ops
= {
1250 .vidioc_querycap
= vpif_querycap
,
1251 .vidioc_enum_fmt_vid_cap
= vpif_enum_fmt_vid_cap
,
1252 .vidioc_g_fmt_vid_cap
= vpif_g_fmt_vid_cap
,
1253 .vidioc_s_fmt_vid_cap
= vpif_s_fmt_vid_cap
,
1254 .vidioc_try_fmt_vid_cap
= vpif_try_fmt_vid_cap
,
1256 .vidioc_enum_input
= vpif_enum_input
,
1257 .vidioc_s_input
= vpif_s_input
,
1258 .vidioc_g_input
= vpif_g_input
,
1260 .vidioc_reqbufs
= vb2_ioctl_reqbufs
,
1261 .vidioc_create_bufs
= vb2_ioctl_create_bufs
,
1262 .vidioc_querybuf
= vb2_ioctl_querybuf
,
1263 .vidioc_qbuf
= vb2_ioctl_qbuf
,
1264 .vidioc_dqbuf
= vb2_ioctl_dqbuf
,
1265 .vidioc_expbuf
= vb2_ioctl_expbuf
,
1266 .vidioc_streamon
= vb2_ioctl_streamon
,
1267 .vidioc_streamoff
= vb2_ioctl_streamoff
,
1269 .vidioc_querystd
= vpif_querystd
,
1270 .vidioc_s_std
= vpif_s_std
,
1271 .vidioc_g_std
= vpif_g_std
,
1273 .vidioc_enum_dv_timings
= vpif_enum_dv_timings
,
1274 .vidioc_query_dv_timings
= vpif_query_dv_timings
,
1275 .vidioc_s_dv_timings
= vpif_s_dv_timings
,
1276 .vidioc_g_dv_timings
= vpif_g_dv_timings
,
1278 .vidioc_log_status
= vpif_log_status
,
1281 /* vpif file operations */
1282 static struct v4l2_file_operations vpif_fops
= {
1283 .owner
= THIS_MODULE
,
1284 .open
= v4l2_fh_open
,
1285 .release
= vb2_fop_release
,
1286 .unlocked_ioctl
= video_ioctl2
,
1287 .mmap
= vb2_fop_mmap
,
1288 .poll
= vb2_fop_poll
1292 * initialize_vpif() - Initialize vpif data structures
1294 * Allocate memory for data structures and initialize them
1296 static int initialize_vpif(void)
1299 int free_channel_objects_index
;
1301 /* Allocate memory for six channel objects */
1302 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1304 kzalloc(sizeof(*vpif_obj
.dev
[i
]), GFP_KERNEL
);
1305 /* If memory allocation fails, return error */
1306 if (!vpif_obj
.dev
[i
]) {
1307 free_channel_objects_index
= i
;
1309 goto vpif_init_free_channel_objects
;
1314 vpif_init_free_channel_objects
:
1315 for (j
= 0; j
< free_channel_objects_index
; j
++)
1316 kfree(vpif_obj
.dev
[j
]);
1320 static int vpif_async_bound(struct v4l2_async_notifier
*notifier
,
1321 struct v4l2_subdev
*subdev
,
1322 struct v4l2_async_subdev
*asd
)
1326 for (i
= 0; i
< vpif_obj
.config
->subdev_count
; i
++)
1327 if (!strcmp(vpif_obj
.config
->subdev_info
[i
].name
,
1329 vpif_obj
.sd
[i
] = subdev
;
1336 static int vpif_probe_complete(void)
1338 struct common_obj
*common
;
1339 struct video_device
*vdev
;
1340 struct channel_obj
*ch
;
1341 struct vb2_queue
*q
;
1344 for (j
= 0; j
< VPIF_CAPTURE_MAX_DEVICES
; j
++) {
1345 ch
= vpif_obj
.dev
[j
];
1347 common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
1348 spin_lock_init(&common
->irqlock
);
1349 mutex_init(&common
->lock
);
1351 /* select input 0 */
1352 err
= vpif_set_input(vpif_obj
.config
, ch
, 0);
1356 /* set initial format */
1357 ch
->video
.stdid
= V4L2_STD_525_60
;
1358 memset(&ch
->video
.dv_timings
, 0, sizeof(ch
->video
.dv_timings
));
1359 vpif_update_std_info(ch
);
1361 /* Initialize vb2 queue */
1362 q
= &common
->buffer_queue
;
1363 q
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1364 q
->io_modes
= VB2_MMAP
| VB2_USERPTR
| VB2_DMABUF
;
1366 q
->ops
= &video_qops
;
1367 q
->mem_ops
= &vb2_dma_contig_memops
;
1368 q
->buf_struct_size
= sizeof(struct vpif_cap_buffer
);
1369 q
->timestamp_flags
= V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC
;
1370 q
->min_buffers_needed
= 1;
1371 q
->lock
= &common
->lock
;
1374 err
= vb2_queue_init(q
);
1376 vpif_err("vpif_capture: vb2_queue_init() failed\n");
1380 INIT_LIST_HEAD(&common
->dma_queue
);
1382 /* Initialize the video_device structure */
1383 vdev
= &ch
->video_dev
;
1384 strlcpy(vdev
->name
, VPIF_DRIVER_NAME
, sizeof(vdev
->name
));
1385 vdev
->release
= video_device_release_empty
;
1386 vdev
->fops
= &vpif_fops
;
1387 vdev
->ioctl_ops
= &vpif_ioctl_ops
;
1388 vdev
->v4l2_dev
= &vpif_obj
.v4l2_dev
;
1389 vdev
->vfl_dir
= VFL_DIR_RX
;
1391 vdev
->lock
= &common
->lock
;
1392 video_set_drvdata(&ch
->video_dev
, ch
);
1393 err
= video_register_device(vdev
,
1394 VFL_TYPE_GRABBER
, (j
? 1 : 0));
1399 v4l2_info(&vpif_obj
.v4l2_dev
, "VPIF capture driver initialized\n");
1403 for (k
= 0; k
< j
; k
++) {
1404 /* Get the pointer to the channel object */
1405 ch
= vpif_obj
.dev
[k
];
1406 common
= &ch
->common
[k
];
1407 /* Unregister video device */
1408 video_unregister_device(&ch
->video_dev
);
1411 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
1416 static int vpif_async_complete(struct v4l2_async_notifier
*notifier
)
1418 return vpif_probe_complete();
1422 * vpif_probe : This function probes the vpif capture driver
1423 * @pdev: platform device pointer
1425 * This creates device entries by register itself to the V4L2 driver and
1426 * initializes fields of each channel objects
1428 static __init
int vpif_probe(struct platform_device
*pdev
)
1430 struct vpif_subdev_info
*subdevdata
;
1431 struct i2c_adapter
*i2c_adap
;
1432 struct resource
*res
;
1437 if (!pdev
->dev
.platform_data
) {
1438 dev_warn(&pdev
->dev
, "Missing platform data. Giving up.\n");
1442 vpif_dev
= &pdev
->dev
;
1444 err
= initialize_vpif();
1446 v4l2_err(vpif_dev
->driver
, "Error initializing vpif\n");
1450 err
= v4l2_device_register(vpif_dev
, &vpif_obj
.v4l2_dev
);
1452 v4l2_err(vpif_dev
->driver
, "Error registering v4l2 device\n");
1456 while ((res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, res_idx
))) {
1457 err
= devm_request_irq(&pdev
->dev
, res
->start
, vpif_channel_isr
,
1458 IRQF_SHARED
, VPIF_DRIVER_NAME
,
1459 (void *)(&vpif_obj
.dev
[res_idx
]->
1463 goto vpif_unregister
;
1468 vpif_obj
.config
= pdev
->dev
.platform_data
;
1470 subdev_count
= vpif_obj
.config
->subdev_count
;
1471 vpif_obj
.sd
= kcalloc(subdev_count
, sizeof(*vpif_obj
.sd
), GFP_KERNEL
);
1474 goto vpif_unregister
;
1477 if (!vpif_obj
.config
->asd_sizes
) {
1478 int i2c_id
= vpif_obj
.config
->i2c_adapter_id
;
1480 i2c_adap
= i2c_get_adapter(i2c_id
);
1482 for (i
= 0; i
< subdev_count
; i
++) {
1483 subdevdata
= &vpif_obj
.config
->subdev_info
[i
];
1485 v4l2_i2c_new_subdev_board(&vpif_obj
.v4l2_dev
,
1491 if (!vpif_obj
.sd
[i
]) {
1492 vpif_err("Error registering v4l2 subdevice\n");
1494 goto probe_subdev_out
;
1496 v4l2_info(&vpif_obj
.v4l2_dev
,
1497 "registered sub device %s\n",
1500 vpif_probe_complete();
1502 vpif_obj
.notifier
.subdevs
= vpif_obj
.config
->asd
;
1503 vpif_obj
.notifier
.num_subdevs
= vpif_obj
.config
->asd_sizes
[0];
1504 vpif_obj
.notifier
.bound
= vpif_async_bound
;
1505 vpif_obj
.notifier
.complete
= vpif_async_complete
;
1506 err
= v4l2_async_notifier_register(&vpif_obj
.v4l2_dev
,
1507 &vpif_obj
.notifier
);
1509 vpif_err("Error registering async notifier\n");
1511 goto probe_subdev_out
;
1518 /* free sub devices memory */
1521 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
1527 * vpif_remove() - driver remove handler
1528 * @device: ptr to platform device structure
1530 * The vidoe device is unregistered
1532 static int vpif_remove(struct platform_device
*device
)
1534 struct common_obj
*common
;
1535 struct channel_obj
*ch
;
1538 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
1541 /* un-register device */
1542 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1543 /* Get the pointer to the channel object */
1544 ch
= vpif_obj
.dev
[i
];
1545 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1546 /* Unregister video device */
1547 video_unregister_device(&ch
->video_dev
);
1548 kfree(vpif_obj
.dev
[i
]);
1553 #ifdef CONFIG_PM_SLEEP
1555 * vpif_suspend: vpif device suspend
1557 static int vpif_suspend(struct device
*dev
)
1560 struct common_obj
*common
;
1561 struct channel_obj
*ch
;
1564 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1565 /* Get the pointer to the channel object */
1566 ch
= vpif_obj
.dev
[i
];
1567 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1569 if (!vb2_start_streaming_called(&common
->buffer_queue
))
1572 mutex_lock(&common
->lock
);
1573 /* Disable channel */
1574 if (ch
->channel_id
== VPIF_CHANNEL0_VIDEO
) {
1576 channel0_intr_enable(0);
1578 if (ch
->channel_id
== VPIF_CHANNEL1_VIDEO
||
1581 channel1_intr_enable(0);
1583 mutex_unlock(&common
->lock
);
1590 * vpif_resume: vpif device suspend
1592 static int vpif_resume(struct device
*dev
)
1594 struct common_obj
*common
;
1595 struct channel_obj
*ch
;
1598 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
1599 /* Get the pointer to the channel object */
1600 ch
= vpif_obj
.dev
[i
];
1601 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1603 if (!vb2_start_streaming_called(&common
->buffer_queue
))
1606 mutex_lock(&common
->lock
);
1607 /* Enable channel */
1608 if (ch
->channel_id
== VPIF_CHANNEL0_VIDEO
) {
1610 channel0_intr_enable(1);
1612 if (ch
->channel_id
== VPIF_CHANNEL1_VIDEO
||
1615 channel1_intr_enable(1);
1617 mutex_unlock(&common
->lock
);
1624 static SIMPLE_DEV_PM_OPS(vpif_pm_ops
, vpif_suspend
, vpif_resume
);
1626 static __refdata
struct platform_driver vpif_driver
= {
1628 .name
= VPIF_DRIVER_NAME
,
1631 .probe
= vpif_probe
,
1632 .remove
= vpif_remove
,
1635 module_platform_driver(vpif_driver
);