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)
43 module_param(debug, int, 0644);
45 MODULE_PARM_DESC(debug, "Debug level 0-1");
47 #define VPIF_DRIVER_NAME "vpif_capture"
49 /* global variables */
50 static struct vpif_device vpif_obj = { {NULL} };
51 static struct device *vpif_dev;
52 static void vpif_calculate_offsets(struct channel_obj *ch);
53 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
55 static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} };
57 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
58 static int ycmux_mode;
60 static inline struct vpif_cap_buffer *to_vpif_buffer(struct vb2_buffer *vb)
62 return container_of(vb, struct vpif_cap_buffer, vb);
66 * vpif_buffer_prepare : callback function for buffer prepare
67 * @vb: ptr to vb2_buffer
69 * This is the callback function for buffer prepare when vb2_qbuf()
70 * function is called. The buffer is prepared and user space virtual address
71 * or user address is converted into physical address
73 static int vpif_buffer_prepare(struct vb2_buffer *vb)
75 struct vb2_queue *q = vb->vb2_queue;
76 struct channel_obj *ch = vb2_get_drv_priv(q);
77 struct common_obj *common;
80 vpif_dbg(2, debug, "vpif_buffer_prepare\n");
82 common = &ch->common[VPIF_VIDEO_INDEX];
84 vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
85 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
88 vb->v4l2_buf.field = common->fmt.fmt.pix.field;
90 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
91 if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
92 !IS_ALIGNED((addr + common->ybtm_off), 8) ||
93 !IS_ALIGNED((addr + common->ctop_off), 8) ||
94 !IS_ALIGNED((addr + common->cbtm_off), 8)) {
95 vpif_dbg(1, debug, "offset is not aligned\n");
103 * vpif_buffer_queue_setup : Callback function for buffer setup.
106 * @nbuffers: ptr to number of buffers requested by application
107 * @nplanes:: contains number of distinct video planes needed to hold a frame
108 * @sizes[]: contains the size (in bytes) of each plane.
109 * @alloc_ctxs: ptr to allocation context
111 * This callback function is called when reqbuf() is called to adjust
112 * the buffer count and buffer size
114 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
115 const struct v4l2_format *fmt,
116 unsigned int *nbuffers, unsigned int *nplanes,
117 unsigned int sizes[], void *alloc_ctxs[])
119 struct channel_obj *ch = vb2_get_drv_priv(vq);
120 struct common_obj *common;
122 common = &ch->common[VPIF_VIDEO_INDEX];
124 vpif_dbg(2, debug, "vpif_buffer_setup\n");
126 if (fmt && fmt->fmt.pix.sizeimage < common->fmt.fmt.pix.sizeimage)
129 if (vq->num_buffers + *nbuffers < 3)
130 *nbuffers = 3 - vq->num_buffers;
133 sizes[0] = fmt ? fmt->fmt.pix.sizeimage : common->fmt.fmt.pix.sizeimage;
134 alloc_ctxs[0] = common->alloc_ctx;
136 /* Calculate the offset for Y and C data in the buffer */
137 vpif_calculate_offsets(ch);
143 * vpif_buffer_queue : Callback function to add buffer to DMA queue
144 * @vb: ptr to vb2_buffer
146 static void vpif_buffer_queue(struct vb2_buffer *vb)
148 struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
149 struct vpif_cap_buffer *buf = to_vpif_buffer(vb);
150 struct common_obj *common;
153 common = &ch->common[VPIF_VIDEO_INDEX];
155 vpif_dbg(2, debug, "vpif_buffer_queue\n");
157 spin_lock_irqsave(&common->irqlock, flags);
158 /* add the buffer to the DMA queue */
159 list_add_tail(&buf->list, &common->dma_queue);
160 spin_unlock_irqrestore(&common->irqlock, flags);
164 * vpif_start_streaming : Starts the DMA engine for streaming
165 * @vb: ptr to vb2_buffer
166 * @count: number of buffers
168 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
170 struct vpif_capture_config *vpif_config_data =
171 vpif_dev->platform_data;
172 struct channel_obj *ch = vb2_get_drv_priv(vq);
173 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
174 struct vpif_params *vpif = &ch->vpifparams;
175 struct vpif_cap_buffer *buf, *tmp;
176 unsigned long addr, flags;
179 spin_lock_irqsave(&common->irqlock, flags);
181 /* Initialize field_id */
184 /* configure 1 or 2 channel mode */
185 if (vpif_config_data->setup_input_channel_mode) {
186 ret = vpif_config_data->
187 setup_input_channel_mode(vpif->std_info.ycmux_mode);
189 vpif_dbg(1, debug, "can't set vpif channel mode\n");
194 ret = v4l2_subdev_call(ch->sd, video, s_stream, 1);
195 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
196 vpif_dbg(1, debug, "stream on failed in subdev\n");
200 /* Call vpif_set_params function to set the parameters and addresses */
201 ret = vpif_set_video_params(vpif, ch->channel_id);
203 vpif_dbg(1, debug, "can't set video params\n");
208 vpif_config_addr(ch, ret);
210 /* Get the next frame from the buffer queue */
211 common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
212 struct vpif_cap_buffer, list);
213 /* Remove buffer from the buffer queue */
214 list_del(&common->cur_frm->list);
215 spin_unlock_irqrestore(&common->irqlock, flags);
217 addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
219 common->set_addr(addr + common->ytop_off,
220 addr + common->ybtm_off,
221 addr + common->ctop_off,
222 addr + common->cbtm_off);
225 * Set interrupt for both the fields in VPIF Register enable channel in
228 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
229 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
230 channel0_intr_assert();
231 channel0_intr_enable(1);
234 if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
236 channel1_intr_assert();
237 channel1_intr_enable(1);
244 list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
245 list_del(&buf->list);
246 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
248 spin_unlock_irqrestore(&common->irqlock, flags);
254 * vpif_stop_streaming : Stop the DMA engine
255 * @vq: ptr to vb2_queue
257 * This callback stops the DMA engine and any remaining buffers
258 * in the DMA queue are released.
260 static void vpif_stop_streaming(struct vb2_queue *vq)
262 struct channel_obj *ch = vb2_get_drv_priv(vq);
263 struct common_obj *common;
267 common = &ch->common[VPIF_VIDEO_INDEX];
269 /* Disable channel as per its device type and channel id */
270 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
272 channel0_intr_enable(0);
274 if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
277 channel1_intr_enable(0);
282 ret = v4l2_subdev_call(ch->sd, video, s_stream, 0);
283 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
284 vpif_dbg(1, debug, "stream off failed in subdev\n");
286 /* release all active buffers */
287 spin_lock_irqsave(&common->irqlock, flags);
288 if (common->cur_frm == common->next_frm) {
289 vb2_buffer_done(&common->cur_frm->vb, VB2_BUF_STATE_ERROR);
291 if (common->cur_frm != NULL)
292 vb2_buffer_done(&common->cur_frm->vb,
293 VB2_BUF_STATE_ERROR);
294 if (common->next_frm != NULL)
295 vb2_buffer_done(&common->next_frm->vb,
296 VB2_BUF_STATE_ERROR);
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_STATE_ERROR);
305 spin_unlock_irqrestore(&common->irqlock, flags);
308 static struct vb2_ops video_qops = {
309 .queue_setup = vpif_buffer_queue_setup,
310 .buf_prepare = vpif_buffer_prepare,
311 .start_streaming = vpif_start_streaming,
312 .stop_streaming = vpif_stop_streaming,
313 .buf_queue = vpif_buffer_queue,
314 .wait_prepare = vb2_ops_wait_prepare,
315 .wait_finish = vb2_ops_wait_finish,
319 * vpif_process_buffer_complete: process a completed buffer
320 * @common: ptr to common channel object
322 * This function time stamp the buffer and mark it as DONE. It also
323 * wake up any process waiting on the QUEUE and set the next buffer
326 static void vpif_process_buffer_complete(struct common_obj *common)
328 v4l2_get_timestamp(&common->cur_frm->vb.v4l2_buf.timestamp);
329 vb2_buffer_done(&common->cur_frm->vb,
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, 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");
647 subdev_name = chan_cfg->inputs[input_index].subdev_name;
648 if (subdev_name == NULL)
651 /* loop through the sub device list to get the sub device info */
652 for (i = 0; i < vpif_cfg->subdev_count; i++) {
653 subdev_info = &vpif_cfg->subdev_info[i];
654 if (!strcmp(subdev_info->name, subdev_name))
661 * vpif_set_input() - Select an input
662 * @vpif_cfg - global config ptr
664 * @_index - Given input index from application
666 * Select the given input.
668 static int vpif_set_input(
669 struct vpif_capture_config *vpif_cfg,
670 struct channel_obj *ch,
673 struct vpif_capture_chan_config *chan_cfg =
674 &vpif_cfg->chan_config[ch->channel_id];
675 struct vpif_subdev_info *subdev_info = NULL;
676 struct v4l2_subdev *sd = NULL;
677 u32 input = 0, output = 0;
681 sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
683 sd = vpif_obj.sd[sd_index];
684 subdev_info = &vpif_cfg->subdev_info[sd_index];
687 /* first setup input path from sub device to vpif */
688 if (sd && vpif_cfg->setup_input_path) {
689 ret = vpif_cfg->setup_input_path(ch->channel_id,
692 vpif_dbg(1, debug, "couldn't setup input path for the" \
693 " sub device %s, for input index %d\n",
694 subdev_info->name, index);
700 input = chan_cfg->inputs[index].input_route;
701 output = chan_cfg->inputs[index].output_route;
702 ret = v4l2_subdev_call(sd, video, s_routing,
704 if (ret < 0 && ret != -ENOIOCTLCMD) {
705 vpif_dbg(1, debug, "Failed to set input\n");
709 ch->input_idx = index;
711 /* copy interface parameters to vpif */
712 ch->vpifparams.iface = chan_cfg->vpif_if;
714 /* update tvnorms from the sub device input info */
715 ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std;
720 * vpif_querystd() - querystd handler
723 * @std_id: ptr to std id
725 * This function is called to detect standard at the selected input
727 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
729 struct video_device *vdev = video_devdata(file);
730 struct channel_obj *ch = video_get_drvdata(vdev);
733 vpif_dbg(2, debug, "vpif_querystd\n");
735 /* Call querystd function of decoder device */
736 ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
738 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
741 vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
749 * vpif_g_std() - get STD handler
752 * @std_id: ptr to std id
754 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
756 struct vpif_capture_config *config = vpif_dev->platform_data;
757 struct video_device *vdev = video_devdata(file);
758 struct channel_obj *ch = video_get_drvdata(vdev);
759 struct vpif_capture_chan_config *chan_cfg;
760 struct v4l2_input input;
762 vpif_dbg(2, debug, "vpif_g_std\n");
764 if (config->chan_config[ch->channel_id].inputs == NULL)
767 chan_cfg = &config->chan_config[ch->channel_id];
768 input = chan_cfg->inputs[ch->input_idx].input;
769 if (input.capabilities != V4L2_IN_CAP_STD)
772 *std = ch->video.stdid;
777 * vpif_s_std() - set STD handler
780 * @std_id: ptr to std id
782 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
784 struct vpif_capture_config *config = vpif_dev->platform_data;
785 struct video_device *vdev = video_devdata(file);
786 struct channel_obj *ch = video_get_drvdata(vdev);
787 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
788 struct vpif_capture_chan_config *chan_cfg;
789 struct v4l2_input input;
792 vpif_dbg(2, debug, "vpif_s_std\n");
794 if (config->chan_config[ch->channel_id].inputs == NULL)
797 chan_cfg = &config->chan_config[ch->channel_id];
798 input = chan_cfg->inputs[ch->input_idx].input;
799 if (input.capabilities != V4L2_IN_CAP_STD)
802 if (vb2_is_busy(&common->buffer_queue))
805 /* Call encoder subdevice function to set the standard */
806 ch->video.stdid = std_id;
807 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
809 /* Get the information about the standard */
810 if (vpif_update_std_info(ch)) {
811 vpif_err("Error getting the standard info\n");
815 /* set standard in the sub device */
816 ret = v4l2_subdev_call(ch->sd, video, s_std, std_id);
817 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
818 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
825 * vpif_enum_input() - ENUMINPUT handler
828 * @input: ptr to input structure
830 static int vpif_enum_input(struct file *file, void *priv,
831 struct v4l2_input *input)
834 struct vpif_capture_config *config = vpif_dev->platform_data;
835 struct video_device *vdev = video_devdata(file);
836 struct channel_obj *ch = video_get_drvdata(vdev);
837 struct vpif_capture_chan_config *chan_cfg;
839 chan_cfg = &config->chan_config[ch->channel_id];
841 if (input->index >= chan_cfg->input_count)
844 memcpy(input, &chan_cfg->inputs[input->index].input,
850 * vpif_g_input() - Get INPUT handler
853 * @index: ptr to input index
855 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
857 struct video_device *vdev = video_devdata(file);
858 struct channel_obj *ch = video_get_drvdata(vdev);
860 *index = ch->input_idx;
865 * vpif_s_input() - Set INPUT handler
868 * @index: input index
870 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
872 struct vpif_capture_config *config = vpif_dev->platform_data;
873 struct video_device *vdev = video_devdata(file);
874 struct channel_obj *ch = video_get_drvdata(vdev);
875 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
876 struct vpif_capture_chan_config *chan_cfg;
878 chan_cfg = &config->chan_config[ch->channel_id];
880 if (index >= chan_cfg->input_count)
883 if (vb2_is_busy(&common->buffer_queue))
886 return vpif_set_input(config, ch, index);
890 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
893 * @index: input index
895 static int vpif_enum_fmt_vid_cap(struct file *file, void *priv,
896 struct v4l2_fmtdesc *fmt)
898 struct video_device *vdev = video_devdata(file);
899 struct channel_obj *ch = video_get_drvdata(vdev);
901 if (fmt->index != 0) {
902 vpif_dbg(1, debug, "Invalid format index\n");
906 /* Fill in the information about format */
907 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) {
908 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
909 strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb");
910 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
912 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
913 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
914 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
920 * vpif_try_fmt_vid_cap() - TRY_FMT handler
923 * @fmt: ptr to v4l2 format structure
925 static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
926 struct v4l2_format *fmt)
928 struct video_device *vdev = video_devdata(file);
929 struct channel_obj *ch = video_get_drvdata(vdev);
930 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
931 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
932 struct vpif_params *vpif_params = &ch->vpifparams;
935 * to supress v4l-compliance warnings silently correct
938 if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
939 if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8)
940 pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
942 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
943 pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
946 common->fmt.fmt.pix.pixelformat = pixfmt->pixelformat;
948 vpif_update_std_info(ch);
950 pixfmt->field = common->fmt.fmt.pix.field;
951 pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
952 pixfmt->bytesperline = common->fmt.fmt.pix.width;
953 pixfmt->width = common->fmt.fmt.pix.width;
954 pixfmt->height = common->fmt.fmt.pix.height;
955 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
963 * vpif_g_fmt_vid_cap() - Set INPUT handler
966 * @fmt: ptr to v4l2 format structure
968 static int vpif_g_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 common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
975 /* Check the validity of the buffer type */
976 if (common->fmt.type != fmt->type)
979 /* Fill in the information about format */
985 * vpif_s_fmt_vid_cap() - Set FMT handler
988 * @fmt: ptr to v4l2 format structure
990 static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
991 struct v4l2_format *fmt)
993 struct video_device *vdev = video_devdata(file);
994 struct channel_obj *ch = video_get_drvdata(vdev);
995 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
998 vpif_dbg(2, debug, "%s\n", __func__);
1000 if (vb2_is_busy(&common->buffer_queue))
1003 ret = vpif_try_fmt_vid_cap(file, priv, fmt);
1007 /* store the format in the channel object */
1013 * vpif_querycap() - QUERYCAP handler
1015 * @priv: file handle
1016 * @cap: ptr to v4l2_capability structure
1018 static int vpif_querycap(struct file *file, void *priv,
1019 struct v4l2_capability *cap)
1021 struct vpif_capture_config *config = vpif_dev->platform_data;
1023 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1024 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1025 strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
1026 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1027 dev_name(vpif_dev));
1028 strlcpy(cap->card, config->card_name, sizeof(cap->card));
1034 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1036 * @priv: file handle
1037 * @timings: input timings
1040 vpif_enum_dv_timings(struct file *file, void *priv,
1041 struct v4l2_enum_dv_timings *timings)
1043 struct vpif_capture_config *config = vpif_dev->platform_data;
1044 struct video_device *vdev = video_devdata(file);
1045 struct channel_obj *ch = video_get_drvdata(vdev);
1046 struct vpif_capture_chan_config *chan_cfg;
1047 struct v4l2_input input;
1050 if (config->chan_config[ch->channel_id].inputs == NULL)
1053 chan_cfg = &config->chan_config[ch->channel_id];
1054 input = chan_cfg->inputs[ch->input_idx].input;
1055 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1060 ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
1061 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1068 * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1070 * @priv: file handle
1071 * @timings: input timings
1074 vpif_query_dv_timings(struct file *file, void *priv,
1075 struct v4l2_dv_timings *timings)
1077 struct vpif_capture_config *config = vpif_dev->platform_data;
1078 struct video_device *vdev = video_devdata(file);
1079 struct channel_obj *ch = video_get_drvdata(vdev);
1080 struct vpif_capture_chan_config *chan_cfg;
1081 struct v4l2_input input;
1084 if (config->chan_config[ch->channel_id].inputs == NULL)
1087 chan_cfg = &config->chan_config[ch->channel_id];
1088 input = chan_cfg->inputs[ch->input_idx].input;
1089 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1092 ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings);
1093 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1100 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1102 * @priv: file handle
1103 * @timings: digital video timings
1105 static int vpif_s_dv_timings(struct file *file, void *priv,
1106 struct v4l2_dv_timings *timings)
1108 struct vpif_capture_config *config = vpif_dev->platform_data;
1109 struct video_device *vdev = video_devdata(file);
1110 struct channel_obj *ch = video_get_drvdata(vdev);
1111 struct vpif_params *vpifparams = &ch->vpifparams;
1112 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1113 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1114 struct video_obj *vid_ch = &ch->video;
1115 struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1116 struct vpif_capture_chan_config *chan_cfg;
1117 struct v4l2_input input;
1120 if (config->chan_config[ch->channel_id].inputs == NULL)
1123 chan_cfg = &config->chan_config[ch->channel_id];
1124 input = chan_cfg->inputs[ch->input_idx].input;
1125 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1128 if (timings->type != V4L2_DV_BT_656_1120) {
1129 vpif_dbg(2, debug, "Timing type not defined\n");
1133 if (vb2_is_busy(&common->buffer_queue))
1136 /* Configure subdevice timings, if any */
1137 ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
1138 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1141 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1145 if (!(timings->bt.width && timings->bt.height &&
1146 (timings->bt.hbackporch ||
1147 timings->bt.hfrontporch ||
1148 timings->bt.hsync) &&
1149 timings->bt.vfrontporch &&
1150 (timings->bt.vbackporch ||
1151 timings->bt.vsync))) {
1152 vpif_dbg(2, debug, "Timings for width, height, "
1153 "horizontal back porch, horizontal sync, "
1154 "horizontal front porch, vertical back porch, "
1155 "vertical sync and vertical back porch "
1156 "must be defined\n");
1160 vid_ch->dv_timings = *timings;
1162 /* Configure video port timings */
1164 std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
1165 std_info->sav2eav = bt->width;
1168 std_info->l3 = bt->vsync + bt->vbackporch + 1;
1170 std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
1171 if (bt->interlaced) {
1172 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1173 std_info->l5 = std_info->vsize/2 -
1174 (bt->vfrontporch - 1);
1175 std_info->l7 = std_info->vsize/2 + 1;
1176 std_info->l9 = std_info->l7 + bt->il_vsync +
1177 bt->il_vbackporch + 1;
1178 std_info->l11 = std_info->vsize -
1179 (bt->il_vfrontporch - 1);
1181 vpif_dbg(2, debug, "Required timing values for "
1182 "interlaced BT format missing\n");
1186 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1188 strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME);
1189 std_info->width = bt->width;
1190 std_info->height = bt->height;
1191 std_info->frm_fmt = bt->interlaced ? 0 : 1;
1192 std_info->ycmux_mode = 0;
1193 std_info->capture_format = 0;
1194 std_info->vbi_supported = 0;
1195 std_info->hd_sd = 1;
1196 std_info->stdid = 0;
1203 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1205 * @priv: file handle
1206 * @timings: digital video timings
1208 static int vpif_g_dv_timings(struct file *file, void *priv,
1209 struct v4l2_dv_timings *timings)
1211 struct vpif_capture_config *config = vpif_dev->platform_data;
1212 struct video_device *vdev = video_devdata(file);
1213 struct channel_obj *ch = video_get_drvdata(vdev);
1214 struct video_obj *vid_ch = &ch->video;
1215 struct vpif_capture_chan_config *chan_cfg;
1216 struct v4l2_input input;
1218 if (config->chan_config[ch->channel_id].inputs == NULL)
1221 chan_cfg = &config->chan_config[ch->channel_id];
1222 input = chan_cfg->inputs[ch->input_idx].input;
1223 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1226 *timings = vid_ch->dv_timings;
1232 * vpif_log_status() - Status information
1234 * @priv: file handle
1238 static int vpif_log_status(struct file *filep, void *priv)
1240 /* status for sub devices */
1241 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1246 /* vpif capture ioctl operations */
1247 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1248 .vidioc_querycap = vpif_querycap,
1249 .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap,
1250 .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap,
1251 .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap,
1252 .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap,
1254 .vidioc_enum_input = vpif_enum_input,
1255 .vidioc_s_input = vpif_s_input,
1256 .vidioc_g_input = vpif_g_input,
1258 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1259 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1260 .vidioc_querybuf = vb2_ioctl_querybuf,
1261 .vidioc_qbuf = vb2_ioctl_qbuf,
1262 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1263 .vidioc_expbuf = vb2_ioctl_expbuf,
1264 .vidioc_streamon = vb2_ioctl_streamon,
1265 .vidioc_streamoff = vb2_ioctl_streamoff,
1267 .vidioc_querystd = vpif_querystd,
1268 .vidioc_s_std = vpif_s_std,
1269 .vidioc_g_std = vpif_g_std,
1271 .vidioc_enum_dv_timings = vpif_enum_dv_timings,
1272 .vidioc_query_dv_timings = vpif_query_dv_timings,
1273 .vidioc_s_dv_timings = vpif_s_dv_timings,
1274 .vidioc_g_dv_timings = vpif_g_dv_timings,
1276 .vidioc_log_status = vpif_log_status,
1279 /* vpif file operations */
1280 static struct v4l2_file_operations vpif_fops = {
1281 .owner = THIS_MODULE,
1282 .open = v4l2_fh_open,
1283 .release = vb2_fop_release,
1284 .unlocked_ioctl = video_ioctl2,
1285 .mmap = vb2_fop_mmap,
1286 .poll = vb2_fop_poll
1290 * initialize_vpif() - Initialize vpif data structures
1292 * Allocate memory for data structures and initialize them
1294 static int initialize_vpif(void)
1297 int free_channel_objects_index;
1299 /* Allocate memory for six channel objects */
1300 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1302 kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
1303 /* If memory allocation fails, return error */
1304 if (!vpif_obj.dev[i]) {
1305 free_channel_objects_index = i;
1307 goto vpif_init_free_channel_objects;
1312 vpif_init_free_channel_objects:
1313 for (j = 0; j < free_channel_objects_index; j++)
1314 kfree(vpif_obj.dev[j]);
1318 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1319 struct v4l2_subdev *subdev,
1320 struct v4l2_async_subdev *asd)
1324 for (i = 0; i < vpif_obj.config->subdev_count; i++)
1325 if (!strcmp(vpif_obj.config->subdev_info[i].name,
1327 vpif_obj.sd[i] = subdev;
1334 static int vpif_probe_complete(void)
1336 struct common_obj *common;
1337 struct video_device *vdev;
1338 struct channel_obj *ch;
1339 struct vb2_queue *q;
1342 for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
1343 ch = vpif_obj.dev[j];
1345 common = &(ch->common[VPIF_VIDEO_INDEX]);
1346 spin_lock_init(&common->irqlock);
1347 mutex_init(&common->lock);
1349 /* select input 0 */
1350 err = vpif_set_input(vpif_obj.config, ch, 0);
1354 /* set initial format */
1355 ch->video.stdid = V4L2_STD_525_60;
1356 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1357 vpif_update_std_info(ch);
1359 /* Initialize vb2 queue */
1360 q = &common->buffer_queue;
1361 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1362 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1364 q->ops = &video_qops;
1365 q->mem_ops = &vb2_dma_contig_memops;
1366 q->buf_struct_size = sizeof(struct vpif_cap_buffer);
1367 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1368 q->min_buffers_needed = 1;
1369 q->lock = &common->lock;
1371 err = vb2_queue_init(q);
1373 vpif_err("vpif_capture: vb2_queue_init() failed\n");
1377 common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
1378 if (IS_ERR(common->alloc_ctx)) {
1379 vpif_err("Failed to get the context\n");
1380 err = PTR_ERR(common->alloc_ctx);
1384 INIT_LIST_HEAD(&common->dma_queue);
1386 /* Initialize the video_device structure */
1387 vdev = ch->video_dev;
1388 strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1389 vdev->release = video_device_release;
1390 vdev->fops = &vpif_fops;
1391 vdev->ioctl_ops = &vpif_ioctl_ops;
1392 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1393 vdev->vfl_dir = VFL_DIR_RX;
1395 vdev->lock = &common->lock;
1396 video_set_drvdata(ch->video_dev, ch);
1397 err = video_register_device(vdev,
1398 VFL_TYPE_GRABBER, (j ? 1 : 0));
1403 v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
1407 for (k = 0; k < j; k++) {
1408 /* Get the pointer to the channel object */
1409 ch = vpif_obj.dev[k];
1410 common = &ch->common[k];
1411 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
1412 /* Unregister video device */
1413 video_unregister_device(ch->video_dev);
1416 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1417 ch = vpif_obj.dev[i];
1418 /* Note: does nothing if ch->video_dev == NULL */
1419 video_device_release(ch->video_dev);
1421 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1426 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1428 return vpif_probe_complete();
1432 * vpif_probe : This function probes the vpif capture driver
1433 * @pdev: platform device pointer
1435 * This creates device entries by register itself to the V4L2 driver and
1436 * initializes fields of each channel objects
1438 static __init int vpif_probe(struct platform_device *pdev)
1440 struct vpif_subdev_info *subdevdata;
1443 struct i2c_adapter *i2c_adap;
1444 struct channel_obj *ch;
1445 struct video_device *vfd;
1446 struct resource *res;
1449 vpif_dev = &pdev->dev;
1451 err = initialize_vpif();
1453 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1457 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1459 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1463 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1464 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1465 IRQF_SHARED, VPIF_DRIVER_NAME,
1466 (void *)(&vpif_obj.dev[res_idx]->
1470 goto vpif_unregister;
1475 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1476 /* Get the pointer to the channel object */
1477 ch = vpif_obj.dev[i];
1478 /* Allocate memory for video device */
1479 vfd = video_device_alloc();
1481 for (j = 0; j < i; j++) {
1482 ch = vpif_obj.dev[j];
1483 video_device_release(ch->video_dev);
1486 goto vpif_unregister;
1489 /* Set video_dev to the video device */
1490 ch->video_dev = vfd;
1493 vpif_obj.config = pdev->dev.platform_data;
1495 subdev_count = vpif_obj.config->subdev_count;
1496 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1498 if (vpif_obj.sd == NULL) {
1499 vpif_err("unable to allocate memory for subdevice pointers\n");
1504 if (!vpif_obj.config->asd_sizes) {
1505 i2c_adap = i2c_get_adapter(1);
1506 for (i = 0; i < subdev_count; i++) {
1507 subdevdata = &vpif_obj.config->subdev_info[i];
1509 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1515 if (!vpif_obj.sd[i]) {
1516 vpif_err("Error registering v4l2 subdevice\n");
1518 goto probe_subdev_out;
1520 v4l2_info(&vpif_obj.v4l2_dev,
1521 "registered sub device %s\n",
1524 vpif_probe_complete();
1526 vpif_obj.notifier.subdevs = vpif_obj.config->asd;
1527 vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
1528 vpif_obj.notifier.bound = vpif_async_bound;
1529 vpif_obj.notifier.complete = vpif_async_complete;
1530 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1531 &vpif_obj.notifier);
1533 vpif_err("Error registering async notifier\n");
1535 goto probe_subdev_out;
1542 /* free sub devices memory */
1546 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1547 ch = vpif_obj.dev[i];
1548 /* Note: does nothing if ch->video_dev == NULL */
1549 video_device_release(ch->video_dev);
1552 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1558 * vpif_remove() - driver remove handler
1559 * @device: ptr to platform device structure
1561 * The vidoe device is unregistered
1563 static int vpif_remove(struct platform_device *device)
1565 struct common_obj *common;
1566 struct channel_obj *ch;
1569 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1572 /* un-register device */
1573 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1574 /* Get the pointer to the channel object */
1575 ch = vpif_obj.dev[i];
1576 common = &ch->common[VPIF_VIDEO_INDEX];
1577 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
1578 /* Unregister video device */
1579 video_unregister_device(ch->video_dev);
1580 kfree(vpif_obj.dev[i]);
1585 #ifdef CONFIG_PM_SLEEP
1587 * vpif_suspend: vpif device suspend
1589 static int vpif_suspend(struct device *dev)
1592 struct common_obj *common;
1593 struct channel_obj *ch;
1596 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1597 /* Get the pointer to the channel object */
1598 ch = vpif_obj.dev[i];
1599 common = &ch->common[VPIF_VIDEO_INDEX];
1601 if (!vb2_start_streaming_called(&common->buffer_queue))
1604 mutex_lock(&common->lock);
1605 /* Disable channel */
1606 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1608 channel0_intr_enable(0);
1610 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1613 channel1_intr_enable(0);
1615 mutex_unlock(&common->lock);
1622 * vpif_resume: vpif device suspend
1624 static int vpif_resume(struct device *dev)
1626 struct common_obj *common;
1627 struct channel_obj *ch;
1630 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1631 /* Get the pointer to the channel object */
1632 ch = vpif_obj.dev[i];
1633 common = &ch->common[VPIF_VIDEO_INDEX];
1635 if (!vb2_start_streaming_called(&common->buffer_queue))
1638 mutex_lock(&common->lock);
1639 /* Enable channel */
1640 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1642 channel0_intr_enable(1);
1644 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1647 channel1_intr_enable(1);
1649 mutex_unlock(&common->lock);
1656 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1658 static __refdata struct platform_driver vpif_driver = {
1660 .name = VPIF_DRIVER_NAME,
1661 .owner = THIS_MODULE,
1664 .probe = vpif_probe,
1665 .remove = vpif_remove,
1668 module_platform_driver(vpif_driver);