2 * Copyright (C) 2009 Texas Instruments Inc
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * TODO : add support for VBI & HBI data service
19 * add static buffer allocation
21 #include <linux/kernel.h>
22 #include <linux/init.h>
23 #include <linux/module.h>
24 #include <linux/errno.h>
27 #include <linux/interrupt.h>
28 #include <linux/workqueue.h>
29 #include <linux/string.h>
30 #include <linux/videodev2.h>
31 #include <linux/wait.h>
32 #include <linux/time.h>
33 #include <linux/i2c.h>
34 #include <linux/platform_device.h>
36 #include <linux/slab.h>
37 #include <media/v4l2-device.h>
38 #include <media/v4l2-ioctl.h>
39 #include <media/v4l2-chip-ident.h>
41 #include "vpif_capture.h"
44 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
45 MODULE_LICENSE("GPL");
46 MODULE_VERSION(VPIF_CAPTURE_VERSION);
48 #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
49 #define vpif_dbg(level, debug, fmt, arg...) \
50 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
53 static u32 ch0_numbuffers = 3;
54 static u32 ch1_numbuffers = 3;
55 static u32 ch0_bufsize = 1920 * 1080 * 2;
56 static u32 ch1_bufsize = 720 * 576 * 2;
58 module_param(debug, int, 0644);
59 module_param(ch0_numbuffers, uint, S_IRUGO);
60 module_param(ch1_numbuffers, uint, S_IRUGO);
61 module_param(ch0_bufsize, uint, S_IRUGO);
62 module_param(ch1_bufsize, uint, S_IRUGO);
64 MODULE_PARM_DESC(debug, "Debug level 0-1");
65 MODULE_PARM_DESC(ch2_numbuffers, "Channel0 buffer count (default:3)");
66 MODULE_PARM_DESC(ch3_numbuffers, "Channel1 buffer count (default:3)");
67 MODULE_PARM_DESC(ch2_bufsize, "Channel0 buffer size (default:1920 x 1080 x 2)");
68 MODULE_PARM_DESC(ch3_bufsize, "Channel1 buffer size (default:720 x 576 x 2)");
70 static struct vpif_config_params config_params = {
74 .min_bufsize[0] = 720 * 480 * 2,
75 .min_bufsize[1] = 720 * 480 * 2,
76 .channel_bufsize[0] = 1920 * 1080 * 2,
77 .channel_bufsize[1] = 720 * 576 * 2,
80 /* global variables */
81 static struct vpif_device vpif_obj = { {NULL} };
82 static struct device *vpif_dev;
83 static void vpif_calculate_offsets(struct channel_obj *ch);
84 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
87 * buffer_prepare : callback function for buffer prepare
88 * @vb: ptr to vb2_buffer
90 * This is the callback function for buffer prepare when vb2_qbuf()
91 * function is called. The buffer is prepared and user space virtual address
92 * or user address is converted into physical address
94 static int vpif_buffer_prepare(struct vb2_buffer *vb)
96 /* Get the file handle object and channel object */
97 struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
98 struct vb2_queue *q = vb->vb2_queue;
99 struct channel_obj *ch = fh->channel;
100 struct common_obj *common;
103 vpif_dbg(2, debug, "vpif_buffer_prepare\n");
105 common = &ch->common[VPIF_VIDEO_INDEX];
107 if (vb->state != VB2_BUF_STATE_ACTIVE &&
108 vb->state != VB2_BUF_STATE_PREPARED) {
109 vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
110 if (vb2_plane_vaddr(vb, 0) &&
111 vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
113 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
116 if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
117 !IS_ALIGNED((addr + common->ybtm_off), 8) ||
118 !IS_ALIGNED((addr + common->ctop_off), 8) ||
119 !IS_ALIGNED((addr + common->cbtm_off), 8))
125 vpif_dbg(1, debug, "buffer_prepare:offset is not aligned to 8 bytes\n");
130 * vpif_buffer_queue_setup : Callback function for buffer setup.
133 * @nbuffers: ptr to number of buffers requested by application
134 * @nplanes:: contains number of distinct video planes needed to hold a frame
135 * @sizes[]: contains the size (in bytes) of each plane.
136 * @alloc_ctxs: ptr to allocation context
138 * This callback function is called when reqbuf() is called to adjust
139 * the buffer count and buffer size
141 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
142 const struct v4l2_format *fmt,
143 unsigned int *nbuffers, unsigned int *nplanes,
144 unsigned int sizes[], void *alloc_ctxs[])
146 /* Get the file handle object and channel object */
147 struct vpif_fh *fh = vb2_get_drv_priv(vq);
148 struct channel_obj *ch = fh->channel;
149 struct common_obj *common;
152 common = &ch->common[VPIF_VIDEO_INDEX];
154 vpif_dbg(2, debug, "vpif_buffer_setup\n");
156 /* If memory type is not mmap, return */
157 if (V4L2_MEMORY_MMAP == common->memory) {
158 /* Calculate the size of the buffer */
159 size = config_params.channel_bufsize[ch->channel_id];
161 * Checking if the buffer size exceeds the available buffer
162 * ycmux_mode = 0 means 1 channel mode HD and
163 * ycmux_mode = 1 means 2 channels mode SD
165 if (ch->vpifparams.std_info.ycmux_mode == 0) {
166 if (config_params.video_limit[ch->channel_id])
167 while (size * *nbuffers >
168 (config_params.video_limit[0]
169 + config_params.video_limit[1]))
172 if (config_params.video_limit[ch->channel_id])
173 while (size * *nbuffers >
174 config_params.video_limit[ch->channel_id])
179 size = common->fmt.fmt.pix.sizeimage;
182 if (*nbuffers < config_params.min_numbuffers)
183 *nbuffers = config_params.min_numbuffers;
187 alloc_ctxs[0] = common->alloc_ctx;
193 * vpif_buffer_queue : Callback function to add buffer to DMA queue
194 * @vb: ptr to vb2_buffer
196 static void vpif_buffer_queue(struct vb2_buffer *vb)
198 /* Get the file handle object and channel object */
199 struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
200 struct channel_obj *ch = fh->channel;
201 struct vpif_cap_buffer *buf = container_of(vb,
202 struct vpif_cap_buffer, vb);
203 struct common_obj *common;
206 common = &ch->common[VPIF_VIDEO_INDEX];
208 vpif_dbg(2, debug, "vpif_buffer_queue\n");
210 spin_lock_irqsave(&common->irqlock, flags);
211 /* add the buffer to the DMA queue */
212 list_add_tail(&buf->list, &common->dma_queue);
213 spin_unlock_irqrestore(&common->irqlock, flags);
217 * vpif_buf_cleanup : Callback function to free buffer
218 * @vb: ptr to vb2_buffer
220 * This function is called from the videobuf2 layer to free memory
221 * allocated to the buffers
223 static void vpif_buf_cleanup(struct vb2_buffer *vb)
225 /* Get the file handle object and channel object */
226 struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
227 struct vpif_cap_buffer *buf = container_of(vb,
228 struct vpif_cap_buffer, vb);
229 struct channel_obj *ch = fh->channel;
230 struct common_obj *common;
233 common = &ch->common[VPIF_VIDEO_INDEX];
235 spin_lock_irqsave(&common->irqlock, flags);
236 if (vb->state == VB2_BUF_STATE_ACTIVE)
237 list_del_init(&buf->list);
238 spin_unlock_irqrestore(&common->irqlock, flags);
242 static void vpif_wait_prepare(struct vb2_queue *vq)
244 struct vpif_fh *fh = vb2_get_drv_priv(vq);
245 struct channel_obj *ch = fh->channel;
246 struct common_obj *common;
248 common = &ch->common[VPIF_VIDEO_INDEX];
249 mutex_unlock(&common->lock);
252 static void vpif_wait_finish(struct vb2_queue *vq)
254 struct vpif_fh *fh = vb2_get_drv_priv(vq);
255 struct channel_obj *ch = fh->channel;
256 struct common_obj *common;
258 common = &ch->common[VPIF_VIDEO_INDEX];
259 mutex_lock(&common->lock);
262 static int vpif_buffer_init(struct vb2_buffer *vb)
264 struct vpif_cap_buffer *buf = container_of(vb,
265 struct vpif_cap_buffer, vb);
267 INIT_LIST_HEAD(&buf->list);
272 static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] =
275 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
277 struct vpif_capture_config *vpif_config_data =
278 vpif_dev->platform_data;
279 struct vpif_fh *fh = vb2_get_drv_priv(vq);
280 struct channel_obj *ch = fh->channel;
281 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
282 struct vpif_params *vpif = &ch->vpifparams;
283 unsigned long addr = 0;
287 /* If buffer queue is empty, return error */
288 spin_lock_irqsave(&common->irqlock, flags);
289 if (list_empty(&common->dma_queue)) {
290 spin_unlock_irqrestore(&common->irqlock, flags);
291 vpif_dbg(1, debug, "buffer queue is empty\n");
295 /* Get the next frame from the buffer queue */
296 common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
297 struct vpif_cap_buffer, list);
298 /* Remove buffer from the buffer queue */
299 list_del(&common->cur_frm->list);
300 spin_unlock_irqrestore(&common->irqlock, flags);
301 /* Mark state of the current frame to active */
302 common->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
303 /* Initialize field_id and started member */
306 addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
308 /* Calculate the offset for Y and C data in the buffer */
309 vpif_calculate_offsets(ch);
311 if ((vpif->std_info.frm_fmt &&
312 ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE) &&
313 (common->fmt.fmt.pix.field != V4L2_FIELD_ANY))) ||
314 (!vpif->std_info.frm_fmt &&
315 (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) {
316 vpif_dbg(1, debug, "conflict in field format and std format\n");
320 /* configure 1 or 2 channel mode */
321 if (vpif_config_data->setup_input_channel_mode) {
322 ret = vpif_config_data->
323 setup_input_channel_mode(vpif->std_info.ycmux_mode);
325 vpif_dbg(1, debug, "can't set vpif channel mode\n");
330 /* Call vpif_set_params function to set the parameters and addresses */
331 ret = vpif_set_video_params(vpif, ch->channel_id);
334 vpif_dbg(1, debug, "can't set video params\n");
338 common->started = ret;
339 vpif_config_addr(ch, ret);
341 common->set_addr(addr + common->ytop_off,
342 addr + common->ybtm_off,
343 addr + common->ctop_off,
344 addr + common->cbtm_off);
347 * Set interrupt for both the fields in VPIF Register enable channel in
350 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
351 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id)) {
352 channel0_intr_assert();
353 channel0_intr_enable(1);
356 if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) ||
357 (common->started == 2)) {
358 channel1_intr_assert();
359 channel1_intr_enable(1);
366 /* abort streaming and wait for last buffer */
367 static int vpif_stop_streaming(struct vb2_queue *vq)
369 struct vpif_fh *fh = vb2_get_drv_priv(vq);
370 struct channel_obj *ch = fh->channel;
371 struct common_obj *common;
374 if (!vb2_is_streaming(vq))
377 common = &ch->common[VPIF_VIDEO_INDEX];
379 /* release all active buffers */
380 spin_lock_irqsave(&common->irqlock, flags);
381 while (!list_empty(&common->dma_queue)) {
382 common->next_frm = list_entry(common->dma_queue.next,
383 struct vpif_cap_buffer, list);
384 list_del(&common->next_frm->list);
385 vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR);
387 spin_unlock_irqrestore(&common->irqlock, flags);
392 static struct vb2_ops video_qops = {
393 .queue_setup = vpif_buffer_queue_setup,
394 .wait_prepare = vpif_wait_prepare,
395 .wait_finish = vpif_wait_finish,
396 .buf_init = vpif_buffer_init,
397 .buf_prepare = vpif_buffer_prepare,
398 .start_streaming = vpif_start_streaming,
399 .stop_streaming = vpif_stop_streaming,
400 .buf_cleanup = vpif_buf_cleanup,
401 .buf_queue = vpif_buffer_queue,
405 * vpif_process_buffer_complete: process a completed buffer
406 * @common: ptr to common channel object
408 * This function time stamp the buffer and mark it as DONE. It also
409 * wake up any process waiting on the QUEUE and set the next buffer
412 static void vpif_process_buffer_complete(struct common_obj *common)
414 do_gettimeofday(&common->cur_frm->vb.v4l2_buf.timestamp);
415 vb2_buffer_done(&common->cur_frm->vb,
417 /* Make curFrm pointing to nextFrm */
418 common->cur_frm = common->next_frm;
422 * vpif_schedule_next_buffer: set next buffer address for capture
423 * @common : ptr to common channel object
425 * This function will get next buffer from the dma queue and
426 * set the buffer address in the vpif register for capture.
427 * the buffer is marked active
429 static void vpif_schedule_next_buffer(struct common_obj *common)
431 unsigned long addr = 0;
433 spin_lock(&common->irqlock);
434 common->next_frm = list_entry(common->dma_queue.next,
435 struct vpif_cap_buffer, list);
436 /* Remove that buffer from the buffer queue */
437 list_del(&common->next_frm->list);
438 spin_unlock(&common->irqlock);
439 common->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
440 addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
442 /* Set top and bottom field addresses in VPIF registers */
443 common->set_addr(addr + common->ytop_off,
444 addr + common->ybtm_off,
445 addr + common->ctop_off,
446 addr + common->cbtm_off);
450 * vpif_channel_isr : ISR handler for vpif capture
452 * @dev_id: dev_id ptr
454 * It changes status of the captured buffer, takes next buffer from the queue
455 * and sets its address in VPIF registers
457 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
459 struct vpif_device *dev = &vpif_obj;
460 struct common_obj *common;
461 struct channel_obj *ch;
462 enum v4l2_field field;
466 channel_id = *(int *)(dev_id);
467 if (!vpif_intr_status(channel_id))
470 ch = dev->dev[channel_id];
472 field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
474 for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
475 common = &ch->common[i];
476 /* skip If streaming is not started in this channel */
477 if (0 == common->started)
480 /* Check the field format */
481 if (1 == ch->vpifparams.std_info.frm_fmt) {
482 /* Progressive mode */
483 spin_lock(&common->irqlock);
484 if (list_empty(&common->dma_queue)) {
485 spin_unlock(&common->irqlock);
488 spin_unlock(&common->irqlock);
490 if (!channel_first_int[i][channel_id])
491 vpif_process_buffer_complete(common);
493 channel_first_int[i][channel_id] = 0;
495 vpif_schedule_next_buffer(common);
498 channel_first_int[i][channel_id] = 0;
501 * Interlaced mode. If it is first interrupt, ignore
504 if (channel_first_int[i][channel_id]) {
505 channel_first_int[i][channel_id] = 0;
510 /* Get field id from VPIF registers */
511 fid = vpif_channel_getfid(ch->channel_id);
512 if (fid != ch->field_id) {
514 * If field id does not match stored
515 * field id, make them in sync
522 /* device field id and local field id are in sync */
524 /* this is even field */
525 if (common->cur_frm == common->next_frm)
528 /* mark the current buffer as done */
529 vpif_process_buffer_complete(common);
530 } else if (1 == fid) {
532 spin_lock(&common->irqlock);
533 if (list_empty(&common->dma_queue) ||
534 (common->cur_frm != common->next_frm)) {
535 spin_unlock(&common->irqlock);
538 spin_unlock(&common->irqlock);
540 vpif_schedule_next_buffer(common);
548 * vpif_update_std_info() - update standard related info
549 * @ch: ptr to channel object
551 * For a given standard selected by application, update values
552 * in the device data structures
554 static int vpif_update_std_info(struct channel_obj *ch)
556 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
557 struct vpif_params *vpifparams = &ch->vpifparams;
558 const struct vpif_channel_config_params *config;
559 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
560 struct video_obj *vid_ch = &ch->video;
563 vpif_dbg(2, debug, "vpif_update_std_info\n");
565 for (index = 0; index < vpif_ch_params_count; index++) {
566 config = &ch_params[index];
567 if (config->hd_sd == 0) {
568 vpif_dbg(2, debug, "SD format\n");
569 if (config->stdid & vid_ch->stdid) {
570 memcpy(std_info, config, sizeof(*config));
574 vpif_dbg(2, debug, "HD format\n");
575 if (!memcmp(&config->dv_timings, &vid_ch->dv_timings,
576 sizeof(vid_ch->dv_timings))) {
577 memcpy(std_info, config, sizeof(*config));
583 /* standard not found */
584 if (index == vpif_ch_params_count)
587 common->fmt.fmt.pix.width = std_info->width;
588 common->width = std_info->width;
589 common->fmt.fmt.pix.height = std_info->height;
590 common->height = std_info->height;
591 common->fmt.fmt.pix.bytesperline = std_info->width;
592 vpifparams->video_params.hpitch = std_info->width;
593 vpifparams->video_params.storage_mode = std_info->frm_fmt;
599 * vpif_calculate_offsets : This function calculates buffers offsets
600 * @ch : ptr to channel object
602 * This function calculates buffer offsets for Y and C in the top and
605 static void vpif_calculate_offsets(struct channel_obj *ch)
607 unsigned int hpitch, vpitch, sizeimage;
608 struct video_obj *vid_ch = &(ch->video);
609 struct vpif_params *vpifparams = &ch->vpifparams;
610 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
611 enum v4l2_field field = common->fmt.fmt.pix.field;
613 vpif_dbg(2, debug, "vpif_calculate_offsets\n");
615 if (V4L2_FIELD_ANY == field) {
616 if (vpifparams->std_info.frm_fmt)
617 vid_ch->buf_field = V4L2_FIELD_NONE;
619 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
621 vid_ch->buf_field = common->fmt.fmt.pix.field;
623 sizeimage = common->fmt.fmt.pix.sizeimage;
625 hpitch = common->fmt.fmt.pix.bytesperline;
626 vpitch = sizeimage / (hpitch * 2);
628 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
629 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
630 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
631 common->ytop_off = 0;
632 common->ybtm_off = hpitch;
633 common->ctop_off = sizeimage / 2;
634 common->cbtm_off = sizeimage / 2 + hpitch;
635 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
636 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
637 common->ytop_off = 0;
638 common->ybtm_off = sizeimage / 4;
639 common->ctop_off = sizeimage / 2;
640 common->cbtm_off = common->ctop_off + sizeimage / 4;
641 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
642 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
643 common->ybtm_off = 0;
644 common->ytop_off = sizeimage / 4;
645 common->cbtm_off = sizeimage / 2;
646 common->ctop_off = common->cbtm_off + sizeimage / 4;
648 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
649 (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
650 vpifparams->video_params.storage_mode = 1;
652 vpifparams->video_params.storage_mode = 0;
654 if (1 == vpifparams->std_info.frm_fmt)
655 vpifparams->video_params.hpitch =
656 common->fmt.fmt.pix.bytesperline;
658 if ((field == V4L2_FIELD_ANY)
659 || (field == V4L2_FIELD_INTERLACED))
660 vpifparams->video_params.hpitch =
661 common->fmt.fmt.pix.bytesperline * 2;
663 vpifparams->video_params.hpitch =
664 common->fmt.fmt.pix.bytesperline;
667 ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
671 * vpif_config_format: configure default frame format in the device
672 * ch : ptr to channel object
674 static void vpif_config_format(struct channel_obj *ch)
676 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
678 vpif_dbg(2, debug, "vpif_config_format\n");
680 common->fmt.fmt.pix.field = V4L2_FIELD_ANY;
681 if (config_params.numbuffers[ch->channel_id] == 0)
682 common->memory = V4L2_MEMORY_USERPTR;
684 common->memory = V4L2_MEMORY_MMAP;
686 common->fmt.fmt.pix.sizeimage
687 = config_params.channel_bufsize[ch->channel_id];
689 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
690 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
692 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
693 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
697 * vpif_get_default_field() - Get default field type based on interface
698 * @vpif_params - ptr to vpif params
700 static inline enum v4l2_field vpif_get_default_field(
701 struct vpif_interface *iface)
703 return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
704 V4L2_FIELD_INTERLACED;
708 * vpif_check_format() - check given pixel format for compatibility
710 * @pixfmt - Given pixel format
711 * @update - update the values as per hardware requirement
713 * Check the application pixel format for S_FMT and update the input
714 * values as per hardware limits for TRY_FMT. The default pixel and
715 * field format is selected based on interface type.
717 static int vpif_check_format(struct channel_obj *ch,
718 struct v4l2_pix_format *pixfmt,
721 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
722 struct vpif_params *vpif_params = &ch->vpifparams;
723 enum v4l2_field field = pixfmt->field;
724 u32 sizeimage, hpitch, vpitch;
727 vpif_dbg(2, debug, "vpif_check_format\n");
729 * first check for the pixel format. If if_type is Raw bayer,
730 * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only
731 * V4L2_PIX_FMT_YUV422P is supported
733 if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
734 if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8) {
736 vpif_dbg(2, debug, "invalid pix format\n");
739 pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
742 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) {
744 vpif_dbg(2, debug, "invalid pixel format\n");
747 pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
751 if (!(VPIF_VALID_FIELD(field))) {
753 vpif_dbg(2, debug, "invalid field format\n");
757 * By default use FIELD_NONE for RAW Bayer capture
758 * and FIELD_INTERLACED for other interfaces
760 field = vpif_get_default_field(&vpif_params->iface);
761 } else if (field == V4L2_FIELD_ANY)
762 /* unsupported field. Use default */
763 field = vpif_get_default_field(&vpif_params->iface);
765 /* validate the hpitch */
766 hpitch = pixfmt->bytesperline;
767 if (hpitch < vpif_params->std_info.width) {
769 vpif_dbg(2, debug, "invalid hpitch\n");
772 hpitch = vpif_params->std_info.width;
775 sizeimage = pixfmt->sizeimage;
777 vpitch = sizeimage / (hpitch * 2);
779 /* validate the vpitch */
780 if (vpitch < vpif_params->std_info.height) {
782 vpif_dbg(2, debug, "Invalid vpitch\n");
785 vpitch = vpif_params->std_info.height;
788 /* Check for 8 byte alignment */
789 if (!ALIGN(hpitch, 8)) {
791 vpif_dbg(2, debug, "invalid pitch alignment\n");
794 /* adjust to next 8 byte boundary */
795 hpitch = (((hpitch + 7) / 8) * 8);
797 /* if update is set, modify the bytesperline and sizeimage */
799 pixfmt->bytesperline = hpitch;
800 pixfmt->sizeimage = hpitch * vpitch * 2;
803 * Image width and height is always based on current standard width and
806 pixfmt->width = common->fmt.fmt.pix.width;
807 pixfmt->height = common->fmt.fmt.pix.height;
814 * vpif_config_addr() - function to configure buffer address in vpif
816 * @muxmode - channel mux mode
818 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
820 struct common_obj *common;
822 vpif_dbg(2, debug, "vpif_config_addr\n");
824 common = &(ch->common[VPIF_VIDEO_INDEX]);
826 if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
827 common->set_addr = ch1_set_videobuf_addr;
828 else if (2 == muxmode)
829 common->set_addr = ch0_set_videobuf_addr_yc_nmux;
831 common->set_addr = ch0_set_videobuf_addr;
835 * vpif_mmap : It is used to map kernel space buffers into user spaces
836 * @filep: file pointer
837 * @vma: ptr to vm_area_struct
839 static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
841 /* Get the channel object and file handle object */
842 struct vpif_fh *fh = filep->private_data;
843 struct channel_obj *ch = fh->channel;
844 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
847 vpif_dbg(2, debug, "vpif_mmap\n");
849 if (mutex_lock_interruptible(&common->lock))
851 ret = vb2_mmap(&common->buffer_queue, vma);
852 mutex_unlock(&common->lock);
857 * vpif_poll: It is used for select/poll system call
858 * @filep: file pointer
859 * @wait: poll table to wait
861 static unsigned int vpif_poll(struct file *filep, poll_table * wait)
863 struct vpif_fh *fh = filep->private_data;
864 struct channel_obj *channel = fh->channel;
865 struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]);
866 unsigned int res = 0;
868 vpif_dbg(2, debug, "vpif_poll\n");
870 if (common->started) {
871 mutex_lock(&common->lock);
872 res = vb2_poll(&common->buffer_queue, filep, wait);
873 mutex_unlock(&common->lock);
879 * vpif_open : vpif open handler
882 * It creates object of file handle structure and stores it in private_data
883 * member of filepointer
885 static int vpif_open(struct file *filep)
887 struct video_device *vdev = video_devdata(filep);
888 struct common_obj *common;
889 struct video_obj *vid_ch;
890 struct channel_obj *ch;
893 vpif_dbg(2, debug, "vpif_open\n");
895 ch = video_get_drvdata(vdev);
898 common = &ch->common[VPIF_VIDEO_INDEX];
900 /* Allocate memory for the file handle object */
901 fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL);
903 vpif_err("unable to allocate memory for file handle object\n");
907 if (mutex_lock_interruptible(&common->lock)) {
911 /* store pointer to fh in private_data member of filep */
912 filep->private_data = fh;
915 /* If decoder is not initialized. initialize it */
916 if (!ch->initialized) {
919 memset(&(ch->vpifparams), 0, sizeof(struct vpif_params));
921 /* Increment channel usrs counter */
923 /* Set io_allowed member to false */
924 fh->io_allowed[VPIF_VIDEO_INDEX] = 0;
925 /* Initialize priority of this instance to default priority */
926 fh->prio = V4L2_PRIORITY_UNSET;
927 v4l2_prio_open(&ch->prio, &fh->prio);
928 mutex_unlock(&common->lock);
933 * vpif_release : function to clean up file close
934 * @filep: file pointer
936 * This function deletes buffer queue, frees the buffers and the vpif file
939 static int vpif_release(struct file *filep)
941 struct vpif_fh *fh = filep->private_data;
942 struct channel_obj *ch = fh->channel;
943 struct common_obj *common;
945 vpif_dbg(2, debug, "vpif_release\n");
947 common = &ch->common[VPIF_VIDEO_INDEX];
949 mutex_lock(&common->lock);
950 /* if this instance is doing IO */
951 if (fh->io_allowed[VPIF_VIDEO_INDEX]) {
952 /* Reset io_usrs member of channel object */
954 /* Disable channel as per its device type and channel id */
955 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
957 channel0_intr_enable(0);
959 if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) ||
960 (2 == common->started)) {
962 channel1_intr_enable(0);
965 /* Free buffers allocated */
966 vb2_queue_release(&common->buffer_queue);
967 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
970 /* Decrement channel usrs counter */
973 /* Close the priority */
974 v4l2_prio_close(&ch->prio, fh->prio);
979 mutex_unlock(&common->lock);
980 filep->private_data = NULL;
986 * vpif_reqbufs() - request buffer handler
989 * @reqbuf: request buffer structure ptr
991 static int vpif_reqbufs(struct file *file, void *priv,
992 struct v4l2_requestbuffers *reqbuf)
994 struct vpif_fh *fh = priv;
995 struct channel_obj *ch = fh->channel;
996 struct common_obj *common;
1001 vpif_dbg(2, debug, "vpif_reqbufs\n");
1004 * This file handle has not initialized the channel,
1005 * It is not allowed to do settings
1007 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id)
1008 || (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
1009 if (!fh->initialized) {
1010 vpif_dbg(1, debug, "Channel Busy\n");
1015 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != reqbuf->type || !vpif_dev)
1018 index = VPIF_VIDEO_INDEX;
1020 common = &ch->common[index];
1022 if (0 != common->io_usrs)
1025 /* Initialize videobuf2 queue as per the buffer type */
1026 common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
1027 if (IS_ERR(common->alloc_ctx)) {
1028 vpif_err("Failed to get the context\n");
1029 return PTR_ERR(common->alloc_ctx);
1031 q = &common->buffer_queue;
1032 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1033 q->io_modes = VB2_MMAP | VB2_USERPTR;
1035 q->ops = &video_qops;
1036 q->mem_ops = &vb2_dma_contig_memops;
1037 q->buf_struct_size = sizeof(struct vpif_cap_buffer);
1039 ret = vb2_queue_init(q);
1041 vpif_err("vpif_capture: vb2_queue_init() failed\n");
1042 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
1045 /* Set io allowed member of file handle to TRUE */
1046 fh->io_allowed[index] = 1;
1047 /* Increment io usrs member of channel object to 1 */
1048 common->io_usrs = 1;
1049 /* Store type of memory requested in channel object */
1050 common->memory = reqbuf->memory;
1051 INIT_LIST_HEAD(&common->dma_queue);
1053 /* Allocate buffers */
1054 return vb2_reqbufs(&common->buffer_queue, reqbuf);
1058 * vpif_querybuf() - query buffer handler
1060 * @priv: file handle
1061 * @buf: v4l2 buffer structure ptr
1063 static int vpif_querybuf(struct file *file, void *priv,
1064 struct v4l2_buffer *buf)
1066 struct vpif_fh *fh = priv;
1067 struct channel_obj *ch = fh->channel;
1068 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1070 vpif_dbg(2, debug, "vpif_querybuf\n");
1072 if (common->fmt.type != buf->type)
1075 if (common->memory != V4L2_MEMORY_MMAP) {
1076 vpif_dbg(1, debug, "Invalid memory\n");
1080 return vb2_querybuf(&common->buffer_queue, buf);
1084 * vpif_qbuf() - query buffer handler
1086 * @priv: file handle
1087 * @buf: v4l2 buffer structure ptr
1089 static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
1092 struct vpif_fh *fh = priv;
1093 struct channel_obj *ch = fh->channel;
1094 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1095 struct v4l2_buffer tbuf = *buf;
1097 vpif_dbg(2, debug, "vpif_qbuf\n");
1099 if (common->fmt.type != tbuf.type) {
1100 vpif_err("invalid buffer type\n");
1104 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1105 vpif_err("fh io not allowed\n");
1109 return vb2_qbuf(&common->buffer_queue, buf);
1113 * vpif_dqbuf() - query buffer handler
1115 * @priv: file handle
1116 * @buf: v4l2 buffer structure ptr
1118 static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
1120 struct vpif_fh *fh = priv;
1121 struct channel_obj *ch = fh->channel;
1122 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1124 vpif_dbg(2, debug, "vpif_dqbuf\n");
1126 return vb2_dqbuf(&common->buffer_queue, buf,
1127 (file->f_flags & O_NONBLOCK));
1131 * vpif_streamon() - streamon handler
1133 * @priv: file handle
1134 * @buftype: v4l2 buffer type
1136 static int vpif_streamon(struct file *file, void *priv,
1137 enum v4l2_buf_type buftype)
1140 struct vpif_fh *fh = priv;
1141 struct channel_obj *ch = fh->channel;
1142 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1143 struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id];
1144 struct vpif_params *vpif;
1147 vpif_dbg(2, debug, "vpif_streamon\n");
1149 vpif = &ch->vpifparams;
1151 if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1152 vpif_dbg(1, debug, "buffer type not supported\n");
1156 /* If file handle is not allowed IO, return error */
1157 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1158 vpif_dbg(1, debug, "io not allowed\n");
1162 /* If Streaming is already started, return error */
1163 if (common->started) {
1164 vpif_dbg(1, debug, "channel->started\n");
1168 if ((ch->channel_id == VPIF_CHANNEL0_VIDEO &&
1169 oth_ch->common[VPIF_VIDEO_INDEX].started &&
1170 vpif->std_info.ycmux_mode == 0) ||
1171 ((ch->channel_id == VPIF_CHANNEL1_VIDEO) &&
1172 (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) {
1173 vpif_dbg(1, debug, "other channel is being used\n");
1177 ret = vpif_check_format(ch, &common->fmt.fmt.pix, 0);
1181 /* Enable streamon on the sub device */
1182 ret = v4l2_subdev_call(ch->sd, video, s_stream, 1);
1184 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
1185 vpif_dbg(1, debug, "stream on failed in subdev\n");
1189 /* Call vb2_streamon to start streaming in videobuf2 */
1190 ret = vb2_streamon(&common->buffer_queue, buftype);
1192 vpif_dbg(1, debug, "vb2_streamon\n");
1200 * vpif_streamoff() - streamoff handler
1202 * @priv: file handle
1203 * @buftype: v4l2 buffer type
1205 static int vpif_streamoff(struct file *file, void *priv,
1206 enum v4l2_buf_type buftype)
1209 struct vpif_fh *fh = priv;
1210 struct channel_obj *ch = fh->channel;
1211 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1214 vpif_dbg(2, debug, "vpif_streamoff\n");
1216 if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1217 vpif_dbg(1, debug, "buffer type not supported\n");
1221 /* If io is allowed for this file handle, return error */
1222 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1223 vpif_dbg(1, debug, "io not allowed\n");
1227 /* If streaming is not started, return error */
1228 if (!common->started) {
1229 vpif_dbg(1, debug, "channel->started\n");
1233 /* disable channel */
1234 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
1236 channel0_intr_enable(0);
1239 channel1_intr_enable(0);
1242 common->started = 0;
1244 ret = v4l2_subdev_call(ch->sd, video, s_stream, 0);
1246 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
1247 vpif_dbg(1, debug, "stream off failed in subdev\n");
1249 return vb2_streamoff(&common->buffer_queue, buftype);
1253 * vpif_input_to_subdev() - Maps input to sub device
1254 * @vpif_cfg - global config ptr
1255 * @chan_cfg - channel config ptr
1256 * @input_index - Given input index from application
1258 * lookup the sub device information for a given input index.
1259 * we report all the inputs to application. inputs table also
1260 * has sub device name for the each input
1262 static int vpif_input_to_subdev(
1263 struct vpif_capture_config *vpif_cfg,
1264 struct vpif_capture_chan_config *chan_cfg,
1267 struct vpif_subdev_info *subdev_info;
1268 const char *subdev_name;
1271 vpif_dbg(2, debug, "vpif_input_to_subdev\n");
1273 subdev_name = chan_cfg->inputs[input_index].subdev_name;
1274 if (subdev_name == NULL)
1277 /* loop through the sub device list to get the sub device info */
1278 for (i = 0; i < vpif_cfg->subdev_count; i++) {
1279 subdev_info = &vpif_cfg->subdev_info[i];
1280 if (!strcmp(subdev_info->name, subdev_name))
1287 * vpif_set_input() - Select an input
1288 * @vpif_cfg - global config ptr
1290 * @_index - Given input index from application
1292 * Select the given input.
1294 static int vpif_set_input(
1295 struct vpif_capture_config *vpif_cfg,
1296 struct channel_obj *ch,
1299 struct vpif_capture_chan_config *chan_cfg =
1300 &vpif_cfg->chan_config[ch->channel_id];
1301 struct vpif_subdev_info *subdev_info = NULL;
1302 struct v4l2_subdev *sd = NULL;
1303 u32 input = 0, output = 0;
1307 sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
1308 if (sd_index >= 0) {
1309 sd = vpif_obj.sd[sd_index];
1310 subdev_info = &vpif_cfg->subdev_info[sd_index];
1313 /* first setup input path from sub device to vpif */
1314 if (sd && vpif_cfg->setup_input_path) {
1315 ret = vpif_cfg->setup_input_path(ch->channel_id,
1318 vpif_dbg(1, debug, "couldn't setup input path for the" \
1319 " sub device %s, for input index %d\n",
1320 subdev_info->name, index);
1326 input = chan_cfg->inputs[index].input_route;
1327 output = chan_cfg->inputs[index].output_route;
1328 ret = v4l2_subdev_call(sd, video, s_routing,
1330 if (ret < 0 && ret != -ENOIOCTLCMD) {
1331 vpif_dbg(1, debug, "Failed to set input\n");
1335 ch->input_idx = index;
1337 /* copy interface parameters to vpif */
1338 ch->vpifparams.iface = chan_cfg->vpif_if;
1340 /* update tvnorms from the sub device input info */
1341 ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std;
1346 * vpif_querystd() - querystd handler
1348 * @priv: file handle
1349 * @std_id: ptr to std id
1351 * This function is called to detect standard at the selected input
1353 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
1355 struct vpif_fh *fh = priv;
1356 struct channel_obj *ch = fh->channel;
1359 vpif_dbg(2, debug, "vpif_querystd\n");
1361 /* Call querystd function of decoder device */
1362 ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
1364 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1367 vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
1375 * vpif_g_std() - get STD handler
1377 * @priv: file handle
1378 * @std_id: ptr to std id
1380 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
1382 struct vpif_fh *fh = priv;
1383 struct channel_obj *ch = fh->channel;
1385 vpif_dbg(2, debug, "vpif_g_std\n");
1387 *std = ch->video.stdid;
1392 * vpif_s_std() - set STD handler
1394 * @priv: file handle
1395 * @std_id: ptr to std id
1397 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
1399 struct vpif_fh *fh = priv;
1400 struct channel_obj *ch = fh->channel;
1401 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1404 vpif_dbg(2, debug, "vpif_s_std\n");
1406 if (common->started) {
1407 vpif_err("streaming in progress\n");
1411 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
1412 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
1413 if (!fh->initialized) {
1414 vpif_dbg(1, debug, "Channel Busy\n");
1419 ret = v4l2_prio_check(&ch->prio, fh->prio);
1423 fh->initialized = 1;
1425 /* Call encoder subdevice function to set the standard */
1426 ch->video.stdid = *std_id;
1427 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1429 /* Get the information about the standard */
1430 if (vpif_update_std_info(ch)) {
1431 vpif_err("Error getting the standard info\n");
1435 /* Configure the default format information */
1436 vpif_config_format(ch);
1438 /* set standard in the sub device */
1439 ret = v4l2_subdev_call(ch->sd, core, s_std, *std_id);
1440 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
1441 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
1448 * vpif_enum_input() - ENUMINPUT handler
1450 * @priv: file handle
1451 * @input: ptr to input structure
1453 static int vpif_enum_input(struct file *file, void *priv,
1454 struct v4l2_input *input)
1457 struct vpif_capture_config *config = vpif_dev->platform_data;
1458 struct vpif_capture_chan_config *chan_cfg;
1459 struct vpif_fh *fh = priv;
1460 struct channel_obj *ch = fh->channel;
1462 chan_cfg = &config->chan_config[ch->channel_id];
1464 if (input->index >= chan_cfg->input_count) {
1465 vpif_dbg(1, debug, "Invalid input index\n");
1469 memcpy(input, &chan_cfg->inputs[input->index].input,
1475 * vpif_g_input() - Get INPUT handler
1477 * @priv: file handle
1478 * @index: ptr to input index
1480 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
1482 struct vpif_fh *fh = priv;
1483 struct channel_obj *ch = fh->channel;
1485 *index = ch->input_idx;
1490 * vpif_s_input() - Set INPUT handler
1492 * @priv: file handle
1493 * @index: input index
1495 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
1497 struct vpif_capture_config *config = vpif_dev->platform_data;
1498 struct vpif_capture_chan_config *chan_cfg;
1499 struct vpif_fh *fh = priv;
1500 struct channel_obj *ch = fh->channel;
1501 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1504 chan_cfg = &config->chan_config[ch->channel_id];
1506 if (index >= chan_cfg->input_count)
1509 if (common->started) {
1510 vpif_err("Streaming in progress\n");
1514 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
1515 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
1516 if (!fh->initialized) {
1517 vpif_dbg(1, debug, "Channel Busy\n");
1522 ret = v4l2_prio_check(&ch->prio, fh->prio);
1526 fh->initialized = 1;
1527 return vpif_set_input(config, ch, index);
1531 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
1533 * @priv: file handle
1534 * @index: input index
1536 static int vpif_enum_fmt_vid_cap(struct file *file, void *priv,
1537 struct v4l2_fmtdesc *fmt)
1539 struct vpif_fh *fh = priv;
1540 struct channel_obj *ch = fh->channel;
1542 if (fmt->index != 0) {
1543 vpif_dbg(1, debug, "Invalid format index\n");
1547 /* Fill in the information about format */
1548 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) {
1549 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1550 strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb");
1551 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
1553 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1554 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
1555 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
1561 * vpif_try_fmt_vid_cap() - TRY_FMT handler
1563 * @priv: file handle
1564 * @fmt: ptr to v4l2 format structure
1566 static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
1567 struct v4l2_format *fmt)
1569 struct vpif_fh *fh = priv;
1570 struct channel_obj *ch = fh->channel;
1571 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
1573 return vpif_check_format(ch, pixfmt, 1);
1578 * vpif_g_fmt_vid_cap() - Set INPUT handler
1580 * @priv: file handle
1581 * @fmt: ptr to v4l2 format structure
1583 static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
1584 struct v4l2_format *fmt)
1586 struct vpif_fh *fh = priv;
1587 struct channel_obj *ch = fh->channel;
1588 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1590 /* Check the validity of the buffer type */
1591 if (common->fmt.type != fmt->type)
1594 /* Fill in the information about format */
1600 * vpif_s_fmt_vid_cap() - Set FMT handler
1602 * @priv: file handle
1603 * @fmt: ptr to v4l2 format structure
1605 static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
1606 struct v4l2_format *fmt)
1608 struct vpif_fh *fh = priv;
1609 struct channel_obj *ch = fh->channel;
1610 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1611 struct v4l2_pix_format *pixfmt;
1614 vpif_dbg(2, debug, "%s\n", __func__);
1616 /* If streaming is started, return error */
1617 if (common->started) {
1618 vpif_dbg(1, debug, "Streaming is started\n");
1622 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
1623 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
1624 if (!fh->initialized) {
1625 vpif_dbg(1, debug, "Channel Busy\n");
1630 ret = v4l2_prio_check(&ch->prio, fh->prio);
1634 fh->initialized = 1;
1636 pixfmt = &fmt->fmt.pix;
1637 /* Check for valid field format */
1638 ret = vpif_check_format(ch, pixfmt, 0);
1642 /* store the format in the channel object */
1648 * vpif_querycap() - QUERYCAP handler
1650 * @priv: file handle
1651 * @cap: ptr to v4l2_capability structure
1653 static int vpif_querycap(struct file *file, void *priv,
1654 struct v4l2_capability *cap)
1656 struct vpif_capture_config *config = vpif_dev->platform_data;
1658 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1659 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1660 snprintf(cap->driver, sizeof(cap->driver), "%s", dev_name(vpif_dev));
1661 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1662 dev_name(vpif_dev));
1663 strlcpy(cap->card, config->card_name, sizeof(cap->card));
1669 * vpif_g_priority() - get priority handler
1671 * @priv: file handle
1672 * @prio: ptr to v4l2_priority structure
1674 static int vpif_g_priority(struct file *file, void *priv,
1675 enum v4l2_priority *prio)
1677 struct vpif_fh *fh = priv;
1678 struct channel_obj *ch = fh->channel;
1680 *prio = v4l2_prio_max(&ch->prio);
1686 * vpif_s_priority() - set priority handler
1688 * @priv: file handle
1689 * @prio: ptr to v4l2_priority structure
1691 static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p)
1693 struct vpif_fh *fh = priv;
1694 struct channel_obj *ch = fh->channel;
1696 return v4l2_prio_change(&ch->prio, &fh->prio, p);
1700 * vpif_cropcap() - cropcap handler
1702 * @priv: file handle
1703 * @crop: ptr to v4l2_cropcap structure
1705 static int vpif_cropcap(struct file *file, void *priv,
1706 struct v4l2_cropcap *crop)
1708 struct vpif_fh *fh = priv;
1709 struct channel_obj *ch = fh->channel;
1710 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1712 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != crop->type)
1715 crop->bounds.left = 0;
1716 crop->bounds.top = 0;
1717 crop->bounds.height = common->height;
1718 crop->bounds.width = common->width;
1719 crop->defrect = crop->bounds;
1724 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1726 * @priv: file handle
1727 * @timings: input timings
1730 vpif_enum_dv_timings(struct file *file, void *priv,
1731 struct v4l2_enum_dv_timings *timings)
1733 struct vpif_fh *fh = priv;
1734 struct channel_obj *ch = fh->channel;
1737 ret = v4l2_subdev_call(ch->sd, video, enum_dv_timings, timings);
1738 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1744 * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1746 * @priv: file handle
1747 * @timings: input timings
1750 vpif_query_dv_timings(struct file *file, void *priv,
1751 struct v4l2_dv_timings *timings)
1753 struct vpif_fh *fh = priv;
1754 struct channel_obj *ch = fh->channel;
1757 ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings);
1758 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1764 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1766 * @priv: file handle
1767 * @timings: digital video timings
1769 static int vpif_s_dv_timings(struct file *file, void *priv,
1770 struct v4l2_dv_timings *timings)
1772 struct vpif_fh *fh = priv;
1773 struct channel_obj *ch = fh->channel;
1774 struct vpif_params *vpifparams = &ch->vpifparams;
1775 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1776 struct video_obj *vid_ch = &ch->video;
1777 struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1780 if (timings->type != V4L2_DV_BT_656_1120) {
1781 vpif_dbg(2, debug, "Timing type not defined\n");
1785 /* Configure subdevice timings, if any */
1786 ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
1787 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1790 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1794 if (!(timings->bt.width && timings->bt.height &&
1795 (timings->bt.hbackporch ||
1796 timings->bt.hfrontporch ||
1797 timings->bt.hsync) &&
1798 timings->bt.vfrontporch &&
1799 (timings->bt.vbackporch ||
1800 timings->bt.vsync))) {
1801 vpif_dbg(2, debug, "Timings for width, height, "
1802 "horizontal back porch, horizontal sync, "
1803 "horizontal front porch, vertical back porch, "
1804 "vertical sync and vertical back porch "
1805 "must be defined\n");
1809 vid_ch->dv_timings = *timings;
1811 /* Configure video port timings */
1813 std_info->eav2sav = bt->hbackporch + bt->hfrontporch +
1815 std_info->sav2eav = bt->width;
1818 std_info->l3 = bt->vsync + bt->vbackporch + 1;
1820 if (bt->interlaced) {
1821 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1822 std_info->vsize = bt->height * 2 +
1823 bt->vfrontporch + bt->vsync + bt->vbackporch +
1824 bt->il_vfrontporch + bt->il_vsync +
1826 std_info->l5 = std_info->vsize/2 -
1827 (bt->vfrontporch - 1);
1828 std_info->l7 = std_info->vsize/2 + 1;
1829 std_info->l9 = std_info->l7 + bt->il_vsync +
1830 bt->il_vbackporch + 1;
1831 std_info->l11 = std_info->vsize -
1832 (bt->il_vfrontporch - 1);
1834 vpif_dbg(2, debug, "Required timing values for "
1835 "interlaced BT format missing\n");
1839 std_info->vsize = bt->height + bt->vfrontporch +
1840 bt->vsync + bt->vbackporch;
1841 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1843 strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME);
1844 std_info->width = bt->width;
1845 std_info->height = bt->height;
1846 std_info->frm_fmt = bt->interlaced ? 0 : 1;
1847 std_info->ycmux_mode = 0;
1848 std_info->capture_format = 0;
1849 std_info->vbi_supported = 0;
1850 std_info->hd_sd = 1;
1851 std_info->stdid = 0;
1858 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1860 * @priv: file handle
1861 * @timings: digital video timings
1863 static int vpif_g_dv_timings(struct file *file, void *priv,
1864 struct v4l2_dv_timings *timings)
1866 struct vpif_fh *fh = priv;
1867 struct channel_obj *ch = fh->channel;
1868 struct video_obj *vid_ch = &ch->video;
1870 *timings = vid_ch->dv_timings;
1876 * vpif_g_chip_ident() - Identify the chip
1878 * @priv: file handle
1879 * @chip: chip identity
1881 * Returns zero or -EINVAL if read operations fails.
1883 static int vpif_g_chip_ident(struct file *file, void *priv,
1884 struct v4l2_dbg_chip_ident *chip)
1886 chip->ident = V4L2_IDENT_NONE;
1888 if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
1889 chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) {
1890 vpif_dbg(2, debug, "match_type is invalid.\n");
1894 return v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 0, core,
1895 g_chip_ident, chip);
1898 #ifdef CONFIG_VIDEO_ADV_DEBUG
1900 * vpif_dbg_g_register() - Read register
1902 * @priv: file handle
1903 * @reg: register to be read
1906 * Returns zero or -EINVAL if read operations fails.
1908 static int vpif_dbg_g_register(struct file *file, void *priv,
1909 struct v4l2_dbg_register *reg){
1910 struct vpif_fh *fh = priv;
1911 struct channel_obj *ch = fh->channel;
1913 return v4l2_subdev_call(ch->sd, core, g_register, reg);
1917 * vpif_dbg_s_register() - Write to register
1919 * @priv: file handle
1920 * @reg: register to be modified
1923 * Returns zero or -EINVAL if write operations fails.
1925 static int vpif_dbg_s_register(struct file *file, void *priv,
1926 struct v4l2_dbg_register *reg){
1927 struct vpif_fh *fh = priv;
1928 struct channel_obj *ch = fh->channel;
1930 return v4l2_subdev_call(ch->sd, core, s_register, reg);
1935 * vpif_log_status() - Status information
1937 * @priv: file handle
1941 static int vpif_log_status(struct file *filep, void *priv)
1943 /* status for sub devices */
1944 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1949 /* vpif capture ioctl operations */
1950 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1951 .vidioc_querycap = vpif_querycap,
1952 .vidioc_g_priority = vpif_g_priority,
1953 .vidioc_s_priority = vpif_s_priority,
1954 .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap,
1955 .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap,
1956 .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap,
1957 .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap,
1958 .vidioc_enum_input = vpif_enum_input,
1959 .vidioc_s_input = vpif_s_input,
1960 .vidioc_g_input = vpif_g_input,
1961 .vidioc_reqbufs = vpif_reqbufs,
1962 .vidioc_querybuf = vpif_querybuf,
1963 .vidioc_querystd = vpif_querystd,
1964 .vidioc_s_std = vpif_s_std,
1965 .vidioc_g_std = vpif_g_std,
1966 .vidioc_qbuf = vpif_qbuf,
1967 .vidioc_dqbuf = vpif_dqbuf,
1968 .vidioc_streamon = vpif_streamon,
1969 .vidioc_streamoff = vpif_streamoff,
1970 .vidioc_cropcap = vpif_cropcap,
1971 .vidioc_enum_dv_timings = vpif_enum_dv_timings,
1972 .vidioc_query_dv_timings = vpif_query_dv_timings,
1973 .vidioc_s_dv_timings = vpif_s_dv_timings,
1974 .vidioc_g_dv_timings = vpif_g_dv_timings,
1975 .vidioc_g_chip_ident = vpif_g_chip_ident,
1976 #ifdef CONFIG_VIDEO_ADV_DEBUG
1977 .vidioc_g_register = vpif_dbg_g_register,
1978 .vidioc_s_register = vpif_dbg_s_register,
1980 .vidioc_log_status = vpif_log_status,
1983 /* vpif file operations */
1984 static struct v4l2_file_operations vpif_fops = {
1985 .owner = THIS_MODULE,
1987 .release = vpif_release,
1988 .unlocked_ioctl = video_ioctl2,
1993 /* vpif video template */
1994 static struct video_device vpif_video_template = {
1998 .ioctl_ops = &vpif_ioctl_ops,
2002 * initialize_vpif() - Initialize vpif data structures
2004 * Allocate memory for data structures and initialize them
2006 static int initialize_vpif(void)
2009 int free_channel_objects_index;
2011 /* Default number of buffers should be 3 */
2012 if ((ch0_numbuffers > 0) &&
2013 (ch0_numbuffers < config_params.min_numbuffers))
2014 ch0_numbuffers = config_params.min_numbuffers;
2015 if ((ch1_numbuffers > 0) &&
2016 (ch1_numbuffers < config_params.min_numbuffers))
2017 ch1_numbuffers = config_params.min_numbuffers;
2019 /* Set buffer size to min buffers size if it is invalid */
2020 if (ch0_bufsize < config_params.min_bufsize[VPIF_CHANNEL0_VIDEO])
2022 config_params.min_bufsize[VPIF_CHANNEL0_VIDEO];
2023 if (ch1_bufsize < config_params.min_bufsize[VPIF_CHANNEL1_VIDEO])
2025 config_params.min_bufsize[VPIF_CHANNEL1_VIDEO];
2027 config_params.numbuffers[VPIF_CHANNEL0_VIDEO] = ch0_numbuffers;
2028 config_params.numbuffers[VPIF_CHANNEL1_VIDEO] = ch1_numbuffers;
2029 if (ch0_numbuffers) {
2030 config_params.channel_bufsize[VPIF_CHANNEL0_VIDEO]
2033 if (ch1_numbuffers) {
2034 config_params.channel_bufsize[VPIF_CHANNEL1_VIDEO]
2038 /* Allocate memory for six channel objects */
2039 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
2041 kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
2042 /* If memory allocation fails, return error */
2043 if (!vpif_obj.dev[i]) {
2044 free_channel_objects_index = i;
2046 goto vpif_init_free_channel_objects;
2051 vpif_init_free_channel_objects:
2052 for (j = 0; j < free_channel_objects_index; j++)
2053 kfree(vpif_obj.dev[j]);
2058 * vpif_probe : This function probes the vpif capture driver
2059 * @pdev: platform device pointer
2061 * This creates device entries by register itself to the V4L2 driver and
2062 * initializes fields of each channel objects
2064 static __init int vpif_probe(struct platform_device *pdev)
2066 struct vpif_subdev_info *subdevdata;
2067 struct vpif_capture_config *config;
2070 struct i2c_adapter *i2c_adap;
2071 struct channel_obj *ch;
2072 struct common_obj *common;
2073 struct video_device *vfd;
2074 struct resource *res;
2078 vpif_dev = &pdev->dev;
2080 err = initialize_vpif();
2082 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
2086 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
2088 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
2092 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
2093 for (i = res->start; i <= res->end; i++) {
2094 if (request_irq(i, vpif_channel_isr, IRQF_SHARED,
2095 "VPIF_Capture", (void *)
2096 (&vpif_obj.dev[res_idx]->channel_id))) {
2098 for (j = 0; j < i; j++)
2099 free_irq(j, (void *)
2100 (&vpif_obj.dev[res_idx]->channel_id));
2107 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
2108 /* Get the pointer to the channel object */
2109 ch = vpif_obj.dev[i];
2110 /* Allocate memory for video device */
2111 vfd = video_device_alloc();
2113 for (j = 0; j < i; j++) {
2114 ch = vpif_obj.dev[j];
2115 video_device_release(ch->video_dev);
2121 /* Initialize field of video device */
2122 *vfd = vpif_video_template;
2123 vfd->v4l2_dev = &vpif_obj.v4l2_dev;
2124 vfd->release = video_device_release;
2125 snprintf(vfd->name, sizeof(vfd->name),
2126 "VPIF_Capture_DRIVER_V%s",
2127 VPIF_CAPTURE_VERSION);
2128 /* Set video_dev to the video device */
2129 ch->video_dev = vfd;
2132 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2134 size = resource_size(res);
2135 /* The resources are divided into two equal memory and when we
2136 * have HD output we can add them together
2138 for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
2139 ch = vpif_obj.dev[j];
2141 /* only enabled if second resource exists */
2142 config_params.video_limit[ch->channel_id] = 0;
2144 config_params.video_limit[ch->channel_id] =
2149 i2c_adap = i2c_get_adapter(1);
2150 config = pdev->dev.platform_data;
2152 subdev_count = config->subdev_count;
2153 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
2155 if (vpif_obj.sd == NULL) {
2156 vpif_err("unable to allocate memory for subdevice pointers\n");
2161 for (i = 0; i < subdev_count; i++) {
2162 subdevdata = &config->subdev_info[i];
2164 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
2166 &subdevdata->board_info,
2169 if (!vpif_obj.sd[i]) {
2170 vpif_err("Error registering v4l2 subdevice\n");
2171 goto probe_subdev_out;
2173 v4l2_info(&vpif_obj.v4l2_dev, "registered sub device %s\n",
2177 for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
2178 ch = vpif_obj.dev[j];
2180 common = &(ch->common[VPIF_VIDEO_INDEX]);
2181 spin_lock_init(&common->irqlock);
2182 mutex_init(&common->lock);
2183 ch->video_dev->lock = &common->lock;
2184 /* Initialize prio member of channel object */
2185 v4l2_prio_init(&ch->prio);
2186 video_set_drvdata(ch->video_dev, ch);
2188 /* select input 0 */
2189 err = vpif_set_input(config, ch, 0);
2193 err = video_register_device(ch->video_dev,
2194 VFL_TYPE_GRABBER, (j ? 1 : 0));
2198 v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
2202 for (k = 0; k < j; k++) {
2203 /* Get the pointer to the channel object */
2204 ch = vpif_obj.dev[k];
2205 /* Unregister video device */
2206 video_unregister_device(ch->video_dev);
2209 /* free sub devices memory */
2213 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
2214 ch = vpif_obj.dev[i];
2215 /* Note: does nothing if ch->video_dev == NULL */
2216 video_device_release(ch->video_dev);
2219 v4l2_device_unregister(&vpif_obj.v4l2_dev);
2220 for (i = 0; i < res_idx; i++) {
2221 res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
2222 for (j = res->start; j <= res->end; j++)
2223 free_irq(j, (void *)(&vpif_obj.dev[i]->channel_id));
2229 * vpif_remove() - driver remove handler
2230 * @device: ptr to platform device structure
2232 * The vidoe device is unregistered
2234 static int vpif_remove(struct platform_device *device)
2237 struct channel_obj *ch;
2239 v4l2_device_unregister(&vpif_obj.v4l2_dev);
2241 /* un-register device */
2242 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
2243 /* Get the pointer to the channel object */
2244 ch = vpif_obj.dev[i];
2245 /* Unregister video device */
2246 video_unregister_device(ch->video_dev);
2253 * vpif_suspend: vpif device suspend
2255 static int vpif_suspend(struct device *dev)
2258 struct common_obj *common;
2259 struct channel_obj *ch;
2262 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
2263 /* Get the pointer to the channel object */
2264 ch = vpif_obj.dev[i];
2265 common = &ch->common[VPIF_VIDEO_INDEX];
2266 mutex_lock(&common->lock);
2267 if (ch->usrs && common->io_usrs) {
2268 /* Disable channel */
2269 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
2271 channel0_intr_enable(0);
2273 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
2274 common->started == 2) {
2276 channel1_intr_enable(0);
2279 mutex_unlock(&common->lock);
2286 * vpif_resume: vpif device suspend
2288 static int vpif_resume(struct device *dev)
2290 struct common_obj *common;
2291 struct channel_obj *ch;
2294 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
2295 /* Get the pointer to the channel object */
2296 ch = vpif_obj.dev[i];
2297 common = &ch->common[VPIF_VIDEO_INDEX];
2298 mutex_lock(&common->lock);
2299 if (ch->usrs && common->io_usrs) {
2300 /* Disable channel */
2301 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
2303 channel0_intr_enable(1);
2305 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
2306 common->started == 2) {
2308 channel1_intr_enable(1);
2311 mutex_unlock(&common->lock);
2317 static const struct dev_pm_ops vpif_dev_pm_ops = {
2318 .suspend = vpif_suspend,
2319 .resume = vpif_resume,
2322 #define vpif_pm_ops (&vpif_dev_pm_ops)
2324 #define vpif_pm_ops NULL
2327 static __refdata struct platform_driver vpif_driver = {
2329 .name = "vpif_capture",
2330 .owner = THIS_MODULE,
2333 .probe = vpif_probe,
2334 .remove = vpif_remove,
2338 * vpif_init: initialize the vpif driver
2340 * This function registers device and driver to the kernel, requests irq
2341 * handler and allocates memory
2342 * for channel objects
2344 static __init int vpif_init(void)
2346 return platform_driver_register(&vpif_driver);
2350 * vpif_cleanup : This function clean up the vpif capture resources
2352 * This will un-registers device and driver to the kernel, frees
2353 * requested irq handler and de-allocates memory allocated for channel
2356 static void vpif_cleanup(void)
2358 struct platform_device *pdev;
2359 struct resource *res;
2363 pdev = container_of(vpif_dev, struct platform_device, dev);
2364 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) {
2365 for (irq_num = res->start; irq_num <= res->end; irq_num++)
2367 (void *)(&vpif_obj.dev[i]->channel_id));
2371 platform_driver_unregister(&vpif_driver);
2374 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++)
2375 kfree(vpif_obj.dev[i]);
2378 /* Function for module initialization and cleanup */
2379 module_init(vpif_init);
2380 module_exit(vpif_cleanup);