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,
317 * vpif_process_buffer_complete: process a completed buffer
318 * @common: ptr to common channel object
320 * This function time stamp the buffer and mark it as DONE. It also
321 * wake up any process waiting on the QUEUE and set the next buffer
324 static void vpif_process_buffer_complete(struct common_obj *common)
326 v4l2_get_timestamp(&common->cur_frm->vb.v4l2_buf.timestamp);
327 vb2_buffer_done(&common->cur_frm->vb,
329 /* Make curFrm pointing to nextFrm */
330 common->cur_frm = common->next_frm;
334 * vpif_schedule_next_buffer: set next buffer address for capture
335 * @common : ptr to common channel object
337 * This function will get next buffer from the dma queue and
338 * set the buffer address in the vpif register for capture.
339 * the buffer is marked active
341 static void vpif_schedule_next_buffer(struct common_obj *common)
343 unsigned long addr = 0;
345 spin_lock(&common->irqlock);
346 common->next_frm = list_entry(common->dma_queue.next,
347 struct vpif_cap_buffer, list);
348 /* Remove that buffer from the buffer queue */
349 list_del(&common->next_frm->list);
350 spin_unlock(&common->irqlock);
351 addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
353 /* Set top and bottom field addresses in VPIF registers */
354 common->set_addr(addr + common->ytop_off,
355 addr + common->ybtm_off,
356 addr + common->ctop_off,
357 addr + common->cbtm_off);
361 * vpif_channel_isr : ISR handler for vpif capture
363 * @dev_id: dev_id ptr
365 * It changes status of the captured buffer, takes next buffer from the queue
366 * and sets its address in VPIF registers
368 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
370 struct vpif_device *dev = &vpif_obj;
371 struct common_obj *common;
372 struct channel_obj *ch;
376 channel_id = *(int *)(dev_id);
377 if (!vpif_intr_status(channel_id))
380 ch = dev->dev[channel_id];
382 for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
383 common = &ch->common[i];
384 /* skip If streaming is not started in this channel */
385 /* Check the field format */
386 if (1 == ch->vpifparams.std_info.frm_fmt) {
387 /* Progressive mode */
388 spin_lock(&common->irqlock);
389 if (list_empty(&common->dma_queue)) {
390 spin_unlock(&common->irqlock);
393 spin_unlock(&common->irqlock);
395 if (!channel_first_int[i][channel_id])
396 vpif_process_buffer_complete(common);
398 channel_first_int[i][channel_id] = 0;
400 vpif_schedule_next_buffer(common);
403 channel_first_int[i][channel_id] = 0;
406 * Interlaced mode. If it is first interrupt, ignore
409 if (channel_first_int[i][channel_id]) {
410 channel_first_int[i][channel_id] = 0;
415 /* Get field id from VPIF registers */
416 fid = vpif_channel_getfid(ch->channel_id);
417 if (fid != ch->field_id) {
419 * If field id does not match stored
420 * field id, make them in sync
427 /* device field id and local field id are in sync */
429 /* this is even field */
430 if (common->cur_frm == common->next_frm)
433 /* mark the current buffer as done */
434 vpif_process_buffer_complete(common);
435 } else if (1 == fid) {
437 spin_lock(&common->irqlock);
438 if (list_empty(&common->dma_queue) ||
439 (common->cur_frm != common->next_frm)) {
440 spin_unlock(&common->irqlock);
443 spin_unlock(&common->irqlock);
445 vpif_schedule_next_buffer(common);
453 * vpif_update_std_info() - update standard related info
454 * @ch: ptr to channel object
456 * For a given standard selected by application, update values
457 * in the device data structures
459 static int vpif_update_std_info(struct channel_obj *ch)
461 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
462 struct vpif_params *vpifparams = &ch->vpifparams;
463 const struct vpif_channel_config_params *config;
464 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
465 struct video_obj *vid_ch = &ch->video;
468 vpif_dbg(2, debug, "vpif_update_std_info\n");
470 for (index = 0; index < vpif_ch_params_count; index++) {
471 config = &vpif_ch_params[index];
472 if (config->hd_sd == 0) {
473 vpif_dbg(2, debug, "SD format\n");
474 if (config->stdid & vid_ch->stdid) {
475 memcpy(std_info, config, sizeof(*config));
479 vpif_dbg(2, debug, "HD format\n");
480 if (!memcmp(&config->dv_timings, &vid_ch->dv_timings,
481 sizeof(vid_ch->dv_timings))) {
482 memcpy(std_info, config, sizeof(*config));
488 /* standard not found */
489 if (index == vpif_ch_params_count)
492 common->fmt.fmt.pix.width = std_info->width;
493 common->width = std_info->width;
494 common->fmt.fmt.pix.height = std_info->height;
495 common->height = std_info->height;
496 common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
497 common->fmt.fmt.pix.bytesperline = std_info->width;
498 vpifparams->video_params.hpitch = std_info->width;
499 vpifparams->video_params.storage_mode = std_info->frm_fmt;
502 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
504 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
506 if (ch->vpifparams.std_info.frm_fmt)
507 common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
509 common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
511 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
512 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
514 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
516 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
522 * vpif_calculate_offsets : This function calculates buffers offsets
523 * @ch : ptr to channel object
525 * This function calculates buffer offsets for Y and C in the top and
528 static void vpif_calculate_offsets(struct channel_obj *ch)
530 unsigned int hpitch, sizeimage;
531 struct video_obj *vid_ch = &(ch->video);
532 struct vpif_params *vpifparams = &ch->vpifparams;
533 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
534 enum v4l2_field field = common->fmt.fmt.pix.field;
536 vpif_dbg(2, debug, "vpif_calculate_offsets\n");
538 if (V4L2_FIELD_ANY == field) {
539 if (vpifparams->std_info.frm_fmt)
540 vid_ch->buf_field = V4L2_FIELD_NONE;
542 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
544 vid_ch->buf_field = common->fmt.fmt.pix.field;
546 sizeimage = common->fmt.fmt.pix.sizeimage;
548 hpitch = common->fmt.fmt.pix.bytesperline;
550 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
551 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
552 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
553 common->ytop_off = 0;
554 common->ybtm_off = hpitch;
555 common->ctop_off = sizeimage / 2;
556 common->cbtm_off = sizeimage / 2 + hpitch;
557 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
558 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
559 common->ytop_off = 0;
560 common->ybtm_off = sizeimage / 4;
561 common->ctop_off = sizeimage / 2;
562 common->cbtm_off = common->ctop_off + sizeimage / 4;
563 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
564 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
565 common->ybtm_off = 0;
566 common->ytop_off = sizeimage / 4;
567 common->cbtm_off = sizeimage / 2;
568 common->ctop_off = common->cbtm_off + sizeimage / 4;
570 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
571 (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
572 vpifparams->video_params.storage_mode = 1;
574 vpifparams->video_params.storage_mode = 0;
576 if (1 == vpifparams->std_info.frm_fmt)
577 vpifparams->video_params.hpitch =
578 common->fmt.fmt.pix.bytesperline;
580 if ((field == V4L2_FIELD_ANY)
581 || (field == V4L2_FIELD_INTERLACED))
582 vpifparams->video_params.hpitch =
583 common->fmt.fmt.pix.bytesperline * 2;
585 vpifparams->video_params.hpitch =
586 common->fmt.fmt.pix.bytesperline;
589 ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
593 * vpif_get_default_field() - Get default field type based on interface
594 * @vpif_params - ptr to vpif params
596 static inline enum v4l2_field vpif_get_default_field(
597 struct vpif_interface *iface)
599 return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
600 V4L2_FIELD_INTERLACED;
604 * vpif_config_addr() - function to configure buffer address in vpif
606 * @muxmode - channel mux mode
608 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
610 struct common_obj *common;
612 vpif_dbg(2, debug, "vpif_config_addr\n");
614 common = &(ch->common[VPIF_VIDEO_INDEX]);
616 if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
617 common->set_addr = ch1_set_videobuf_addr;
618 else if (2 == muxmode)
619 common->set_addr = ch0_set_videobuf_addr_yc_nmux;
621 common->set_addr = ch0_set_videobuf_addr;
625 * vpif_input_to_subdev() - Maps input to sub device
626 * @vpif_cfg - global config ptr
627 * @chan_cfg - channel config ptr
628 * @input_index - Given input index from application
630 * lookup the sub device information for a given input index.
631 * we report all the inputs to application. inputs table also
632 * has sub device name for the each input
634 static int vpif_input_to_subdev(
635 struct vpif_capture_config *vpif_cfg,
636 struct vpif_capture_chan_config *chan_cfg,
639 struct vpif_subdev_info *subdev_info;
640 const char *subdev_name;
643 vpif_dbg(2, debug, "vpif_input_to_subdev\n");
645 subdev_name = chan_cfg->inputs[input_index].subdev_name;
646 if (subdev_name == NULL)
649 /* loop through the sub device list to get the sub device info */
650 for (i = 0; i < vpif_cfg->subdev_count; i++) {
651 subdev_info = &vpif_cfg->subdev_info[i];
652 if (!strcmp(subdev_info->name, subdev_name))
659 * vpif_set_input() - Select an input
660 * @vpif_cfg - global config ptr
662 * @_index - Given input index from application
664 * Select the given input.
666 static int vpif_set_input(
667 struct vpif_capture_config *vpif_cfg,
668 struct channel_obj *ch,
671 struct vpif_capture_chan_config *chan_cfg =
672 &vpif_cfg->chan_config[ch->channel_id];
673 struct vpif_subdev_info *subdev_info = NULL;
674 struct v4l2_subdev *sd = NULL;
675 u32 input = 0, output = 0;
679 sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
681 sd = vpif_obj.sd[sd_index];
682 subdev_info = &vpif_cfg->subdev_info[sd_index];
685 /* first setup input path from sub device to vpif */
686 if (sd && vpif_cfg->setup_input_path) {
687 ret = vpif_cfg->setup_input_path(ch->channel_id,
690 vpif_dbg(1, debug, "couldn't setup input path for the" \
691 " sub device %s, for input index %d\n",
692 subdev_info->name, index);
698 input = chan_cfg->inputs[index].input_route;
699 output = chan_cfg->inputs[index].output_route;
700 ret = v4l2_subdev_call(sd, video, s_routing,
702 if (ret < 0 && ret != -ENOIOCTLCMD) {
703 vpif_dbg(1, debug, "Failed to set input\n");
707 ch->input_idx = index;
709 /* copy interface parameters to vpif */
710 ch->vpifparams.iface = chan_cfg->vpif_if;
712 /* update tvnorms from the sub device input info */
713 ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std;
718 * vpif_querystd() - querystd handler
721 * @std_id: ptr to std id
723 * This function is called to detect standard at the selected input
725 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
727 struct video_device *vdev = video_devdata(file);
728 struct channel_obj *ch = video_get_drvdata(vdev);
731 vpif_dbg(2, debug, "vpif_querystd\n");
733 /* Call querystd function of decoder device */
734 ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
736 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
739 vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
747 * vpif_g_std() - get STD handler
750 * @std_id: ptr to std id
752 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
754 struct vpif_capture_config *config = vpif_dev->platform_data;
755 struct video_device *vdev = video_devdata(file);
756 struct channel_obj *ch = video_get_drvdata(vdev);
757 struct vpif_capture_chan_config *chan_cfg;
758 struct v4l2_input input;
760 vpif_dbg(2, debug, "vpif_g_std\n");
762 if (config->chan_config[ch->channel_id].inputs == NULL)
765 chan_cfg = &config->chan_config[ch->channel_id];
766 input = chan_cfg->inputs[ch->input_idx].input;
767 if (input.capabilities != V4L2_IN_CAP_STD)
770 *std = ch->video.stdid;
775 * vpif_s_std() - set STD handler
778 * @std_id: ptr to std id
780 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
782 struct vpif_capture_config *config = vpif_dev->platform_data;
783 struct video_device *vdev = video_devdata(file);
784 struct channel_obj *ch = video_get_drvdata(vdev);
785 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
786 struct vpif_capture_chan_config *chan_cfg;
787 struct v4l2_input input;
790 vpif_dbg(2, debug, "vpif_s_std\n");
792 if (config->chan_config[ch->channel_id].inputs == NULL)
795 chan_cfg = &config->chan_config[ch->channel_id];
796 input = chan_cfg->inputs[ch->input_idx].input;
797 if (input.capabilities != V4L2_IN_CAP_STD)
800 if (vb2_is_busy(&common->buffer_queue))
803 /* Call encoder subdevice function to set the standard */
804 ch->video.stdid = std_id;
805 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
807 /* Get the information about the standard */
808 if (vpif_update_std_info(ch)) {
809 vpif_err("Error getting the standard info\n");
813 /* set standard in the sub device */
814 ret = v4l2_subdev_call(ch->sd, video, s_std, std_id);
815 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
816 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
823 * vpif_enum_input() - ENUMINPUT handler
826 * @input: ptr to input structure
828 static int vpif_enum_input(struct file *file, void *priv,
829 struct v4l2_input *input)
832 struct vpif_capture_config *config = vpif_dev->platform_data;
833 struct video_device *vdev = video_devdata(file);
834 struct channel_obj *ch = video_get_drvdata(vdev);
835 struct vpif_capture_chan_config *chan_cfg;
837 chan_cfg = &config->chan_config[ch->channel_id];
839 if (input->index >= chan_cfg->input_count)
842 memcpy(input, &chan_cfg->inputs[input->index].input,
848 * vpif_g_input() - Get INPUT handler
851 * @index: ptr to input index
853 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
855 struct video_device *vdev = video_devdata(file);
856 struct channel_obj *ch = video_get_drvdata(vdev);
858 *index = ch->input_idx;
863 * vpif_s_input() - Set INPUT handler
866 * @index: input index
868 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
870 struct vpif_capture_config *config = vpif_dev->platform_data;
871 struct video_device *vdev = video_devdata(file);
872 struct channel_obj *ch = video_get_drvdata(vdev);
873 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
874 struct vpif_capture_chan_config *chan_cfg;
876 chan_cfg = &config->chan_config[ch->channel_id];
878 if (index >= chan_cfg->input_count)
881 if (vb2_is_busy(&common->buffer_queue))
884 return vpif_set_input(config, ch, index);
888 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
891 * @index: input index
893 static int vpif_enum_fmt_vid_cap(struct file *file, void *priv,
894 struct v4l2_fmtdesc *fmt)
896 struct video_device *vdev = video_devdata(file);
897 struct channel_obj *ch = video_get_drvdata(vdev);
899 if (fmt->index != 0) {
900 vpif_dbg(1, debug, "Invalid format index\n");
904 /* Fill in the information about format */
905 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) {
906 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
907 strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb");
908 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
910 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
911 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
912 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
918 * vpif_try_fmt_vid_cap() - TRY_FMT handler
921 * @fmt: ptr to v4l2 format structure
923 static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
924 struct v4l2_format *fmt)
926 struct video_device *vdev = video_devdata(file);
927 struct channel_obj *ch = video_get_drvdata(vdev);
928 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
929 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
930 struct vpif_params *vpif_params = &ch->vpifparams;
933 * to supress v4l-compliance warnings silently correct
936 if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
937 if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8)
938 pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
940 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
941 pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
944 common->fmt.fmt.pix.pixelformat = pixfmt->pixelformat;
946 vpif_update_std_info(ch);
948 pixfmt->field = common->fmt.fmt.pix.field;
949 pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
950 pixfmt->bytesperline = common->fmt.fmt.pix.width;
951 pixfmt->width = common->fmt.fmt.pix.width;
952 pixfmt->height = common->fmt.fmt.pix.height;
953 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
961 * vpif_g_fmt_vid_cap() - Set INPUT handler
964 * @fmt: ptr to v4l2 format structure
966 static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
967 struct v4l2_format *fmt)
969 struct video_device *vdev = video_devdata(file);
970 struct channel_obj *ch = video_get_drvdata(vdev);
971 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
973 /* Check the validity of the buffer type */
974 if (common->fmt.type != fmt->type)
977 /* Fill in the information about format */
983 * vpif_s_fmt_vid_cap() - Set FMT handler
986 * @fmt: ptr to v4l2 format structure
988 static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
989 struct v4l2_format *fmt)
991 struct video_device *vdev = video_devdata(file);
992 struct channel_obj *ch = video_get_drvdata(vdev);
993 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
996 vpif_dbg(2, debug, "%s\n", __func__);
998 if (vb2_is_busy(&common->buffer_queue))
1001 ret = vpif_try_fmt_vid_cap(file, priv, fmt);
1005 /* store the format in the channel object */
1011 * vpif_querycap() - QUERYCAP handler
1013 * @priv: file handle
1014 * @cap: ptr to v4l2_capability structure
1016 static int vpif_querycap(struct file *file, void *priv,
1017 struct v4l2_capability *cap)
1019 struct vpif_capture_config *config = vpif_dev->platform_data;
1021 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1022 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1023 strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
1024 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1025 dev_name(vpif_dev));
1026 strlcpy(cap->card, config->card_name, sizeof(cap->card));
1032 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1034 * @priv: file handle
1035 * @timings: input timings
1038 vpif_enum_dv_timings(struct file *file, void *priv,
1039 struct v4l2_enum_dv_timings *timings)
1041 struct vpif_capture_config *config = vpif_dev->platform_data;
1042 struct video_device *vdev = video_devdata(file);
1043 struct channel_obj *ch = video_get_drvdata(vdev);
1044 struct vpif_capture_chan_config *chan_cfg;
1045 struct v4l2_input input;
1048 if (config->chan_config[ch->channel_id].inputs == NULL)
1051 chan_cfg = &config->chan_config[ch->channel_id];
1052 input = chan_cfg->inputs[ch->input_idx].input;
1053 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1058 ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
1059 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1066 * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1068 * @priv: file handle
1069 * @timings: input timings
1072 vpif_query_dv_timings(struct file *file, void *priv,
1073 struct v4l2_dv_timings *timings)
1075 struct vpif_capture_config *config = vpif_dev->platform_data;
1076 struct video_device *vdev = video_devdata(file);
1077 struct channel_obj *ch = video_get_drvdata(vdev);
1078 struct vpif_capture_chan_config *chan_cfg;
1079 struct v4l2_input input;
1082 if (config->chan_config[ch->channel_id].inputs == NULL)
1085 chan_cfg = &config->chan_config[ch->channel_id];
1086 input = chan_cfg->inputs[ch->input_idx].input;
1087 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1090 ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings);
1091 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1098 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1100 * @priv: file handle
1101 * @timings: digital video timings
1103 static int vpif_s_dv_timings(struct file *file, void *priv,
1104 struct v4l2_dv_timings *timings)
1106 struct vpif_capture_config *config = vpif_dev->platform_data;
1107 struct video_device *vdev = video_devdata(file);
1108 struct channel_obj *ch = video_get_drvdata(vdev);
1109 struct vpif_params *vpifparams = &ch->vpifparams;
1110 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1111 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1112 struct video_obj *vid_ch = &ch->video;
1113 struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1114 struct vpif_capture_chan_config *chan_cfg;
1115 struct v4l2_input input;
1118 if (config->chan_config[ch->channel_id].inputs == NULL)
1121 chan_cfg = &config->chan_config[ch->channel_id];
1122 input = chan_cfg->inputs[ch->input_idx].input;
1123 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1126 if (timings->type != V4L2_DV_BT_656_1120) {
1127 vpif_dbg(2, debug, "Timing type not defined\n");
1131 if (vb2_is_busy(&common->buffer_queue))
1134 /* Configure subdevice timings, if any */
1135 ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
1136 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1139 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1143 if (!(timings->bt.width && timings->bt.height &&
1144 (timings->bt.hbackporch ||
1145 timings->bt.hfrontporch ||
1146 timings->bt.hsync) &&
1147 timings->bt.vfrontporch &&
1148 (timings->bt.vbackporch ||
1149 timings->bt.vsync))) {
1150 vpif_dbg(2, debug, "Timings for width, height, "
1151 "horizontal back porch, horizontal sync, "
1152 "horizontal front porch, vertical back porch, "
1153 "vertical sync and vertical back porch "
1154 "must be defined\n");
1158 vid_ch->dv_timings = *timings;
1160 /* Configure video port timings */
1162 std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
1163 std_info->sav2eav = bt->width;
1166 std_info->l3 = bt->vsync + bt->vbackporch + 1;
1168 std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
1169 if (bt->interlaced) {
1170 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1171 std_info->l5 = std_info->vsize/2 -
1172 (bt->vfrontporch - 1);
1173 std_info->l7 = std_info->vsize/2 + 1;
1174 std_info->l9 = std_info->l7 + bt->il_vsync +
1175 bt->il_vbackporch + 1;
1176 std_info->l11 = std_info->vsize -
1177 (bt->il_vfrontporch - 1);
1179 vpif_dbg(2, debug, "Required timing values for "
1180 "interlaced BT format missing\n");
1184 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1186 strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME);
1187 std_info->width = bt->width;
1188 std_info->height = bt->height;
1189 std_info->frm_fmt = bt->interlaced ? 0 : 1;
1190 std_info->ycmux_mode = 0;
1191 std_info->capture_format = 0;
1192 std_info->vbi_supported = 0;
1193 std_info->hd_sd = 1;
1194 std_info->stdid = 0;
1201 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1203 * @priv: file handle
1204 * @timings: digital video timings
1206 static int vpif_g_dv_timings(struct file *file, void *priv,
1207 struct v4l2_dv_timings *timings)
1209 struct vpif_capture_config *config = vpif_dev->platform_data;
1210 struct video_device *vdev = video_devdata(file);
1211 struct channel_obj *ch = video_get_drvdata(vdev);
1212 struct video_obj *vid_ch = &ch->video;
1213 struct vpif_capture_chan_config *chan_cfg;
1214 struct v4l2_input input;
1216 if (config->chan_config[ch->channel_id].inputs == NULL)
1219 chan_cfg = &config->chan_config[ch->channel_id];
1220 input = chan_cfg->inputs[ch->input_idx].input;
1221 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1224 *timings = vid_ch->dv_timings;
1230 * vpif_log_status() - Status information
1232 * @priv: file handle
1236 static int vpif_log_status(struct file *filep, void *priv)
1238 /* status for sub devices */
1239 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1244 /* vpif capture ioctl operations */
1245 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1246 .vidioc_querycap = vpif_querycap,
1247 .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap,
1248 .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap,
1249 .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap,
1250 .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap,
1252 .vidioc_enum_input = vpif_enum_input,
1253 .vidioc_s_input = vpif_s_input,
1254 .vidioc_g_input = vpif_g_input,
1256 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1257 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1258 .vidioc_querybuf = vb2_ioctl_querybuf,
1259 .vidioc_qbuf = vb2_ioctl_qbuf,
1260 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1261 .vidioc_expbuf = vb2_ioctl_expbuf,
1262 .vidioc_streamon = vb2_ioctl_streamon,
1263 .vidioc_streamoff = vb2_ioctl_streamoff,
1265 .vidioc_querystd = vpif_querystd,
1266 .vidioc_s_std = vpif_s_std,
1267 .vidioc_g_std = vpif_g_std,
1269 .vidioc_enum_dv_timings = vpif_enum_dv_timings,
1270 .vidioc_query_dv_timings = vpif_query_dv_timings,
1271 .vidioc_s_dv_timings = vpif_s_dv_timings,
1272 .vidioc_g_dv_timings = vpif_g_dv_timings,
1274 .vidioc_log_status = vpif_log_status,
1277 /* vpif file operations */
1278 static struct v4l2_file_operations vpif_fops = {
1279 .owner = THIS_MODULE,
1280 .open = v4l2_fh_open,
1281 .release = vb2_fop_release,
1282 .unlocked_ioctl = video_ioctl2,
1283 .mmap = vb2_fop_mmap,
1284 .poll = vb2_fop_poll
1288 * initialize_vpif() - Initialize vpif data structures
1290 * Allocate memory for data structures and initialize them
1292 static int initialize_vpif(void)
1295 int free_channel_objects_index;
1297 /* Allocate memory for six channel objects */
1298 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1300 kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
1301 /* If memory allocation fails, return error */
1302 if (!vpif_obj.dev[i]) {
1303 free_channel_objects_index = i;
1305 goto vpif_init_free_channel_objects;
1310 vpif_init_free_channel_objects:
1311 for (j = 0; j < free_channel_objects_index; j++)
1312 kfree(vpif_obj.dev[j]);
1316 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1317 struct v4l2_subdev *subdev,
1318 struct v4l2_async_subdev *asd)
1322 for (i = 0; i < vpif_obj.config->subdev_count; i++)
1323 if (!strcmp(vpif_obj.config->subdev_info[i].name,
1325 vpif_obj.sd[i] = subdev;
1332 static int vpif_probe_complete(void)
1334 struct common_obj *common;
1335 struct video_device *vdev;
1336 struct channel_obj *ch;
1337 struct vb2_queue *q;
1340 for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
1341 ch = vpif_obj.dev[j];
1343 common = &(ch->common[VPIF_VIDEO_INDEX]);
1344 spin_lock_init(&common->irqlock);
1345 mutex_init(&common->lock);
1347 /* select input 0 */
1348 err = vpif_set_input(vpif_obj.config, ch, 0);
1352 /* set initial format */
1353 ch->video.stdid = V4L2_STD_525_60;
1354 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1355 vpif_update_std_info(ch);
1357 /* Initialize vb2 queue */
1358 q = &common->buffer_queue;
1359 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1360 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1362 q->ops = &video_qops;
1363 q->mem_ops = &vb2_dma_contig_memops;
1364 q->buf_struct_size = sizeof(struct vpif_cap_buffer);
1365 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1366 q->min_buffers_needed = 1;
1367 q->lock = &common->lock;
1369 err = vb2_queue_init(q);
1371 vpif_err("vpif_capture: vb2_queue_init() failed\n");
1375 common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
1376 if (IS_ERR(common->alloc_ctx)) {
1377 vpif_err("Failed to get the context\n");
1378 err = PTR_ERR(common->alloc_ctx);
1382 INIT_LIST_HEAD(&common->dma_queue);
1384 /* Initialize the video_device structure */
1385 vdev = ch->video_dev;
1386 strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1387 vdev->release = video_device_release;
1388 vdev->fops = &vpif_fops;
1389 vdev->ioctl_ops = &vpif_ioctl_ops;
1390 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1391 vdev->vfl_dir = VFL_DIR_RX;
1393 vdev->lock = &common->lock;
1394 video_set_drvdata(ch->video_dev, ch);
1395 err = video_register_device(vdev,
1396 VFL_TYPE_GRABBER, (j ? 1 : 0));
1401 v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
1405 for (k = 0; k < j; k++) {
1406 /* Get the pointer to the channel object */
1407 ch = vpif_obj.dev[k];
1408 common = &ch->common[k];
1409 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
1410 /* Unregister video device */
1411 video_unregister_device(ch->video_dev);
1414 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1415 ch = vpif_obj.dev[i];
1416 /* Note: does nothing if ch->video_dev == NULL */
1417 video_device_release(ch->video_dev);
1419 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1424 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1426 return vpif_probe_complete();
1430 * vpif_probe : This function probes the vpif capture driver
1431 * @pdev: platform device pointer
1433 * This creates device entries by register itself to the V4L2 driver and
1434 * initializes fields of each channel objects
1436 static __init int vpif_probe(struct platform_device *pdev)
1438 struct vpif_subdev_info *subdevdata;
1441 struct i2c_adapter *i2c_adap;
1442 struct channel_obj *ch;
1443 struct video_device *vfd;
1444 struct resource *res;
1447 vpif_dev = &pdev->dev;
1449 err = initialize_vpif();
1451 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1455 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1457 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1461 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1462 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1463 IRQF_SHARED, VPIF_DRIVER_NAME,
1464 (void *)(&vpif_obj.dev[res_idx]->
1468 goto vpif_unregister;
1473 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1474 /* Get the pointer to the channel object */
1475 ch = vpif_obj.dev[i];
1476 /* Allocate memory for video device */
1477 vfd = video_device_alloc();
1479 for (j = 0; j < i; j++) {
1480 ch = vpif_obj.dev[j];
1481 video_device_release(ch->video_dev);
1484 goto vpif_unregister;
1487 /* Set video_dev to the video device */
1488 ch->video_dev = vfd;
1491 vpif_obj.config = pdev->dev.platform_data;
1493 subdev_count = vpif_obj.config->subdev_count;
1494 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1496 if (vpif_obj.sd == NULL) {
1497 vpif_err("unable to allocate memory for subdevice pointers\n");
1502 if (!vpif_obj.config->asd_sizes) {
1503 i2c_adap = i2c_get_adapter(1);
1504 for (i = 0; i < subdev_count; i++) {
1505 subdevdata = &vpif_obj.config->subdev_info[i];
1507 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1513 if (!vpif_obj.sd[i]) {
1514 vpif_err("Error registering v4l2 subdevice\n");
1516 goto probe_subdev_out;
1518 v4l2_info(&vpif_obj.v4l2_dev,
1519 "registered sub device %s\n",
1522 vpif_probe_complete();
1524 vpif_obj.notifier.subdevs = vpif_obj.config->asd;
1525 vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
1526 vpif_obj.notifier.bound = vpif_async_bound;
1527 vpif_obj.notifier.complete = vpif_async_complete;
1528 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1529 &vpif_obj.notifier);
1531 vpif_err("Error registering async notifier\n");
1533 goto probe_subdev_out;
1540 /* free sub devices memory */
1544 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1545 ch = vpif_obj.dev[i];
1546 /* Note: does nothing if ch->video_dev == NULL */
1547 video_device_release(ch->video_dev);
1550 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1556 * vpif_remove() - driver remove handler
1557 * @device: ptr to platform device structure
1559 * The vidoe device is unregistered
1561 static int vpif_remove(struct platform_device *device)
1563 struct common_obj *common;
1564 struct channel_obj *ch;
1567 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1570 /* un-register device */
1571 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1572 /* Get the pointer to the channel object */
1573 ch = vpif_obj.dev[i];
1574 common = &ch->common[VPIF_VIDEO_INDEX];
1575 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
1576 /* Unregister video device */
1577 video_unregister_device(ch->video_dev);
1578 kfree(vpif_obj.dev[i]);
1583 #ifdef CONFIG_PM_SLEEP
1585 * vpif_suspend: vpif device suspend
1587 static int vpif_suspend(struct device *dev)
1590 struct common_obj *common;
1591 struct channel_obj *ch;
1594 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1595 /* Get the pointer to the channel object */
1596 ch = vpif_obj.dev[i];
1597 common = &ch->common[VPIF_VIDEO_INDEX];
1599 if (!vb2_start_streaming_called(&common->buffer_queue))
1602 mutex_lock(&common->lock);
1603 /* Disable channel */
1604 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1606 channel0_intr_enable(0);
1608 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1611 channel1_intr_enable(0);
1613 mutex_unlock(&common->lock);
1620 * vpif_resume: vpif device suspend
1622 static int vpif_resume(struct device *dev)
1624 struct common_obj *common;
1625 struct channel_obj *ch;
1628 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1629 /* Get the pointer to the channel object */
1630 ch = vpif_obj.dev[i];
1631 common = &ch->common[VPIF_VIDEO_INDEX];
1633 if (!vb2_start_streaming_called(&common->buffer_queue))
1636 mutex_lock(&common->lock);
1637 /* Enable channel */
1638 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1640 channel0_intr_enable(1);
1642 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1645 channel1_intr_enable(1);
1647 mutex_unlock(&common->lock);
1654 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1656 static __refdata struct platform_driver vpif_driver = {
1658 .name = VPIF_DRIVER_NAME,
1659 .owner = THIS_MODULE,
1662 .probe = vpif_probe,
1663 .remove = vpif_remove,
1666 module_platform_driver(vpif_driver);