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;
205 common = &ch->common[VPIF_VIDEO_INDEX];
207 vpif_dbg(2, debug, "vpif_buffer_queue\n");
209 /* add the buffer to the DMA queue */
210 list_add_tail(&buf->list, &common->dma_queue);
214 * vpif_buf_cleanup : Callback function to free buffer
215 * @vb: ptr to vb2_buffer
217 * This function is called from the videobuf2 layer to free memory
218 * allocated to the buffers
220 static void vpif_buf_cleanup(struct vb2_buffer *vb)
222 /* Get the file handle object and channel object */
223 struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
224 struct vpif_cap_buffer *buf = container_of(vb,
225 struct vpif_cap_buffer, vb);
226 struct channel_obj *ch = fh->channel;
227 struct common_obj *common;
230 common = &ch->common[VPIF_VIDEO_INDEX];
232 spin_lock_irqsave(&common->irqlock, flags);
233 if (vb->state == VB2_BUF_STATE_ACTIVE)
234 list_del_init(&buf->list);
235 spin_unlock_irqrestore(&common->irqlock, flags);
239 static void vpif_wait_prepare(struct vb2_queue *vq)
241 struct vpif_fh *fh = vb2_get_drv_priv(vq);
242 struct channel_obj *ch = fh->channel;
243 struct common_obj *common;
245 common = &ch->common[VPIF_VIDEO_INDEX];
246 mutex_unlock(&common->lock);
249 static void vpif_wait_finish(struct vb2_queue *vq)
251 struct vpif_fh *fh = vb2_get_drv_priv(vq);
252 struct channel_obj *ch = fh->channel;
253 struct common_obj *common;
255 common = &ch->common[VPIF_VIDEO_INDEX];
256 mutex_lock(&common->lock);
259 static int vpif_buffer_init(struct vb2_buffer *vb)
261 struct vpif_cap_buffer *buf = container_of(vb,
262 struct vpif_cap_buffer, vb);
264 INIT_LIST_HEAD(&buf->list);
269 static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] =
272 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
274 struct vpif_capture_config *vpif_config_data =
275 vpif_dev->platform_data;
276 struct vpif_fh *fh = vb2_get_drv_priv(vq);
277 struct channel_obj *ch = fh->channel;
278 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
279 struct vpif_params *vpif = &ch->vpifparams;
280 unsigned long addr = 0;
283 /* If buffer queue is empty, return error */
284 if (list_empty(&common->dma_queue)) {
285 vpif_dbg(1, debug, "buffer queue is empty\n");
289 /* Get the next frame from the buffer queue */
290 common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
291 struct vpif_cap_buffer, list);
292 /* Remove buffer from the buffer queue */
293 list_del(&common->cur_frm->list);
294 /* Mark state of the current frame to active */
295 common->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
296 /* Initialize field_id and started member */
299 addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
301 /* Calculate the offset for Y and C data in the buffer */
302 vpif_calculate_offsets(ch);
304 if ((vpif->std_info.frm_fmt &&
305 ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE) &&
306 (common->fmt.fmt.pix.field != V4L2_FIELD_ANY))) ||
307 (!vpif->std_info.frm_fmt &&
308 (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) {
309 vpif_dbg(1, debug, "conflict in field format and std format\n");
313 /* configure 1 or 2 channel mode */
314 ret = vpif_config_data->setup_input_channel_mode
315 (vpif->std_info.ycmux_mode);
318 vpif_dbg(1, debug, "can't set vpif channel mode\n");
322 /* Call vpif_set_params function to set the parameters and addresses */
323 ret = vpif_set_video_params(vpif, ch->channel_id);
326 vpif_dbg(1, debug, "can't set video params\n");
330 common->started = ret;
331 vpif_config_addr(ch, ret);
333 common->set_addr(addr + common->ytop_off,
334 addr + common->ybtm_off,
335 addr + common->ctop_off,
336 addr + common->cbtm_off);
339 * Set interrupt for both the fields in VPIF Register enable channel in
342 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
343 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id)) {
344 channel0_intr_assert();
345 channel0_intr_enable(1);
348 if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) ||
349 (common->started == 2)) {
350 channel1_intr_assert();
351 channel1_intr_enable(1);
358 /* abort streaming and wait for last buffer */
359 static int vpif_stop_streaming(struct vb2_queue *vq)
361 struct vpif_fh *fh = vb2_get_drv_priv(vq);
362 struct channel_obj *ch = fh->channel;
363 struct common_obj *common;
365 if (!vb2_is_streaming(vq))
368 common = &ch->common[VPIF_VIDEO_INDEX];
370 /* release all active buffers */
371 while (!list_empty(&common->dma_queue)) {
372 common->next_frm = list_entry(common->dma_queue.next,
373 struct vpif_cap_buffer, list);
374 list_del(&common->next_frm->list);
375 vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR);
381 static struct vb2_ops video_qops = {
382 .queue_setup = vpif_buffer_queue_setup,
383 .wait_prepare = vpif_wait_prepare,
384 .wait_finish = vpif_wait_finish,
385 .buf_init = vpif_buffer_init,
386 .buf_prepare = vpif_buffer_prepare,
387 .start_streaming = vpif_start_streaming,
388 .stop_streaming = vpif_stop_streaming,
389 .buf_cleanup = vpif_buf_cleanup,
390 .buf_queue = vpif_buffer_queue,
394 * vpif_process_buffer_complete: process a completed buffer
395 * @common: ptr to common channel object
397 * This function time stamp the buffer and mark it as DONE. It also
398 * wake up any process waiting on the QUEUE and set the next buffer
401 static void vpif_process_buffer_complete(struct common_obj *common)
403 do_gettimeofday(&common->cur_frm->vb.v4l2_buf.timestamp);
404 vb2_buffer_done(&common->cur_frm->vb,
406 /* Make curFrm pointing to nextFrm */
407 common->cur_frm = common->next_frm;
411 * vpif_schedule_next_buffer: set next buffer address for capture
412 * @common : ptr to common channel object
414 * This function will get next buffer from the dma queue and
415 * set the buffer address in the vpif register for capture.
416 * the buffer is marked active
418 static void vpif_schedule_next_buffer(struct common_obj *common)
420 unsigned long addr = 0;
422 common->next_frm = list_entry(common->dma_queue.next,
423 struct vpif_cap_buffer, list);
424 /* Remove that buffer from the buffer queue */
425 list_del(&common->next_frm->list);
426 common->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
427 addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
429 /* Set top and bottom field addresses in VPIF registers */
430 common->set_addr(addr + common->ytop_off,
431 addr + common->ybtm_off,
432 addr + common->ctop_off,
433 addr + common->cbtm_off);
437 * vpif_channel_isr : ISR handler for vpif capture
439 * @dev_id: dev_id ptr
441 * It changes status of the captured buffer, takes next buffer from the queue
442 * and sets its address in VPIF registers
444 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
446 struct vpif_device *dev = &vpif_obj;
447 struct common_obj *common;
448 struct channel_obj *ch;
449 enum v4l2_field field;
453 channel_id = *(int *)(dev_id);
454 if (!vpif_intr_status(channel_id))
457 ch = dev->dev[channel_id];
459 field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
461 for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
462 common = &ch->common[i];
463 /* skip If streaming is not started in this channel */
464 if (0 == common->started)
467 /* Check the field format */
468 if (1 == ch->vpifparams.std_info.frm_fmt) {
469 /* Progressive mode */
470 if (list_empty(&common->dma_queue))
473 if (!channel_first_int[i][channel_id])
474 vpif_process_buffer_complete(common);
476 channel_first_int[i][channel_id] = 0;
478 vpif_schedule_next_buffer(common);
481 channel_first_int[i][channel_id] = 0;
484 * Interlaced mode. If it is first interrupt, ignore
487 if (channel_first_int[i][channel_id]) {
488 channel_first_int[i][channel_id] = 0;
493 /* Get field id from VPIF registers */
494 fid = vpif_channel_getfid(ch->channel_id);
495 if (fid != ch->field_id) {
497 * If field id does not match stored
498 * field id, make them in sync
505 /* device field id and local field id are in sync */
507 /* this is even field */
508 if (common->cur_frm == common->next_frm)
511 /* mark the current buffer as done */
512 vpif_process_buffer_complete(common);
513 } else if (1 == fid) {
515 if (list_empty(&common->dma_queue) ||
516 (common->cur_frm != common->next_frm))
519 vpif_schedule_next_buffer(common);
527 * vpif_update_std_info() - update standard related info
528 * @ch: ptr to channel object
530 * For a given standard selected by application, update values
531 * in the device data structures
533 static int vpif_update_std_info(struct channel_obj *ch)
535 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
536 struct vpif_params *vpifparams = &ch->vpifparams;
537 const struct vpif_channel_config_params *config;
538 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
539 struct video_obj *vid_ch = &ch->video;
542 vpif_dbg(2, debug, "vpif_update_std_info\n");
544 for (index = 0; index < vpif_ch_params_count; index++) {
545 config = &ch_params[index];
546 if (config->hd_sd == 0) {
547 vpif_dbg(2, debug, "SD format\n");
548 if (config->stdid & vid_ch->stdid) {
549 memcpy(std_info, config, sizeof(*config));
553 vpif_dbg(2, debug, "HD format\n");
554 if (!memcmp(&config->dv_timings, &vid_ch->dv_timings,
555 sizeof(vid_ch->dv_timings))) {
556 memcpy(std_info, config, sizeof(*config));
562 /* standard not found */
563 if (index == vpif_ch_params_count)
566 common->fmt.fmt.pix.width = std_info->width;
567 common->width = std_info->width;
568 common->fmt.fmt.pix.height = std_info->height;
569 common->height = std_info->height;
570 common->fmt.fmt.pix.bytesperline = std_info->width;
571 vpifparams->video_params.hpitch = std_info->width;
572 vpifparams->video_params.storage_mode = std_info->frm_fmt;
578 * vpif_calculate_offsets : This function calculates buffers offsets
579 * @ch : ptr to channel object
581 * This function calculates buffer offsets for Y and C in the top and
584 static void vpif_calculate_offsets(struct channel_obj *ch)
586 unsigned int hpitch, vpitch, sizeimage;
587 struct video_obj *vid_ch = &(ch->video);
588 struct vpif_params *vpifparams = &ch->vpifparams;
589 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
590 enum v4l2_field field = common->fmt.fmt.pix.field;
592 vpif_dbg(2, debug, "vpif_calculate_offsets\n");
594 if (V4L2_FIELD_ANY == field) {
595 if (vpifparams->std_info.frm_fmt)
596 vid_ch->buf_field = V4L2_FIELD_NONE;
598 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
600 vid_ch->buf_field = common->fmt.fmt.pix.field;
602 sizeimage = common->fmt.fmt.pix.sizeimage;
604 hpitch = common->fmt.fmt.pix.bytesperline;
605 vpitch = sizeimage / (hpitch * 2);
607 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
608 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
609 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
610 common->ytop_off = 0;
611 common->ybtm_off = hpitch;
612 common->ctop_off = sizeimage / 2;
613 common->cbtm_off = sizeimage / 2 + hpitch;
614 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
615 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
616 common->ytop_off = 0;
617 common->ybtm_off = sizeimage / 4;
618 common->ctop_off = sizeimage / 2;
619 common->cbtm_off = common->ctop_off + sizeimage / 4;
620 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
621 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
622 common->ybtm_off = 0;
623 common->ytop_off = sizeimage / 4;
624 common->cbtm_off = sizeimage / 2;
625 common->ctop_off = common->cbtm_off + sizeimage / 4;
627 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
628 (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
629 vpifparams->video_params.storage_mode = 1;
631 vpifparams->video_params.storage_mode = 0;
633 if (1 == vpifparams->std_info.frm_fmt)
634 vpifparams->video_params.hpitch =
635 common->fmt.fmt.pix.bytesperline;
637 if ((field == V4L2_FIELD_ANY)
638 || (field == V4L2_FIELD_INTERLACED))
639 vpifparams->video_params.hpitch =
640 common->fmt.fmt.pix.bytesperline * 2;
642 vpifparams->video_params.hpitch =
643 common->fmt.fmt.pix.bytesperline;
646 ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
650 * vpif_config_format: configure default frame format in the device
651 * ch : ptr to channel object
653 static void vpif_config_format(struct channel_obj *ch)
655 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
657 vpif_dbg(2, debug, "vpif_config_format\n");
659 common->fmt.fmt.pix.field = V4L2_FIELD_ANY;
660 if (config_params.numbuffers[ch->channel_id] == 0)
661 common->memory = V4L2_MEMORY_USERPTR;
663 common->memory = V4L2_MEMORY_MMAP;
665 common->fmt.fmt.pix.sizeimage
666 = config_params.channel_bufsize[ch->channel_id];
668 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
669 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
671 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
672 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
676 * vpif_get_default_field() - Get default field type based on interface
677 * @vpif_params - ptr to vpif params
679 static inline enum v4l2_field vpif_get_default_field(
680 struct vpif_interface *iface)
682 return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
683 V4L2_FIELD_INTERLACED;
687 * vpif_check_format() - check given pixel format for compatibility
689 * @pixfmt - Given pixel format
690 * @update - update the values as per hardware requirement
692 * Check the application pixel format for S_FMT and update the input
693 * values as per hardware limits for TRY_FMT. The default pixel and
694 * field format is selected based on interface type.
696 static int vpif_check_format(struct channel_obj *ch,
697 struct v4l2_pix_format *pixfmt,
700 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
701 struct vpif_params *vpif_params = &ch->vpifparams;
702 enum v4l2_field field = pixfmt->field;
703 u32 sizeimage, hpitch, vpitch;
706 vpif_dbg(2, debug, "vpif_check_format\n");
708 * first check for the pixel format. If if_type is Raw bayer,
709 * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only
710 * V4L2_PIX_FMT_YUV422P is supported
712 if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
713 if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8) {
715 vpif_dbg(2, debug, "invalid pix format\n");
718 pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
721 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) {
723 vpif_dbg(2, debug, "invalid pixel format\n");
726 pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
730 if (!(VPIF_VALID_FIELD(field))) {
732 vpif_dbg(2, debug, "invalid field format\n");
736 * By default use FIELD_NONE for RAW Bayer capture
737 * and FIELD_INTERLACED for other interfaces
739 field = vpif_get_default_field(&vpif_params->iface);
740 } else if (field == V4L2_FIELD_ANY)
741 /* unsupported field. Use default */
742 field = vpif_get_default_field(&vpif_params->iface);
744 /* validate the hpitch */
745 hpitch = pixfmt->bytesperline;
746 if (hpitch < vpif_params->std_info.width) {
748 vpif_dbg(2, debug, "invalid hpitch\n");
751 hpitch = vpif_params->std_info.width;
754 sizeimage = pixfmt->sizeimage;
756 vpitch = sizeimage / (hpitch * 2);
758 /* validate the vpitch */
759 if (vpitch < vpif_params->std_info.height) {
761 vpif_dbg(2, debug, "Invalid vpitch\n");
764 vpitch = vpif_params->std_info.height;
767 /* Check for 8 byte alignment */
768 if (!ALIGN(hpitch, 8)) {
770 vpif_dbg(2, debug, "invalid pitch alignment\n");
773 /* adjust to next 8 byte boundary */
774 hpitch = (((hpitch + 7) / 8) * 8);
776 /* if update is set, modify the bytesperline and sizeimage */
778 pixfmt->bytesperline = hpitch;
779 pixfmt->sizeimage = hpitch * vpitch * 2;
782 * Image width and height is always based on current standard width and
785 pixfmt->width = common->fmt.fmt.pix.width;
786 pixfmt->height = common->fmt.fmt.pix.height;
793 * vpif_config_addr() - function to configure buffer address in vpif
795 * @muxmode - channel mux mode
797 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
799 struct common_obj *common;
801 vpif_dbg(2, debug, "vpif_config_addr\n");
803 common = &(ch->common[VPIF_VIDEO_INDEX]);
805 if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
806 common->set_addr = ch1_set_videobuf_addr;
807 else if (2 == muxmode)
808 common->set_addr = ch0_set_videobuf_addr_yc_nmux;
810 common->set_addr = ch0_set_videobuf_addr;
814 * vpif_mmap : It is used to map kernel space buffers into user spaces
815 * @filep: file pointer
816 * @vma: ptr to vm_area_struct
818 static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
820 /* Get the channel object and file handle object */
821 struct vpif_fh *fh = filep->private_data;
822 struct channel_obj *ch = fh->channel;
823 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
826 vpif_dbg(2, debug, "vpif_mmap\n");
828 if (mutex_lock_interruptible(&common->lock))
830 ret = vb2_mmap(&common->buffer_queue, vma);
831 mutex_unlock(&common->lock);
836 * vpif_poll: It is used for select/poll system call
837 * @filep: file pointer
838 * @wait: poll table to wait
840 static unsigned int vpif_poll(struct file *filep, poll_table * wait)
842 struct vpif_fh *fh = filep->private_data;
843 struct channel_obj *channel = fh->channel;
844 struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]);
845 unsigned int res = 0;
847 vpif_dbg(2, debug, "vpif_poll\n");
849 if (common->started) {
850 mutex_lock(&common->lock);
851 res = vb2_poll(&common->buffer_queue, filep, wait);
852 mutex_unlock(&common->lock);
858 * vpif_open : vpif open handler
861 * It creates object of file handle structure and stores it in private_data
862 * member of filepointer
864 static int vpif_open(struct file *filep)
866 struct vpif_capture_config *config = vpif_dev->platform_data;
867 struct video_device *vdev = video_devdata(filep);
868 struct common_obj *common;
869 struct video_obj *vid_ch;
870 struct channel_obj *ch;
874 vpif_dbg(2, debug, "vpif_open\n");
876 ch = video_get_drvdata(vdev);
879 common = &ch->common[VPIF_VIDEO_INDEX];
881 if (NULL == ch->curr_subdev_info) {
883 * search through the sub device to see a registered
884 * sub device and make it as current sub device
886 for (i = 0; i < config->subdev_count; i++) {
887 if (vpif_obj.sd[i]) {
888 /* the sub device is registered */
889 ch->curr_subdev_info = &config->subdev_info[i];
890 /* make first input as the current input */
891 vid_ch->input_idx = 0;
895 if (i == config->subdev_count) {
896 vpif_err("No sub device registered\n");
901 /* Allocate memory for the file handle object */
902 fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL);
904 vpif_err("unable to allocate memory for file handle object\n");
908 if (mutex_lock_interruptible(&common->lock)) {
912 /* store pointer to fh in private_data member of filep */
913 filep->private_data = fh;
916 /* If decoder is not initialized. initialize it */
917 if (!ch->initialized) {
920 memset(&(ch->vpifparams), 0, sizeof(struct vpif_params));
922 /* Increment channel usrs counter */
924 /* Set io_allowed member to false */
925 fh->io_allowed[VPIF_VIDEO_INDEX] = 0;
926 /* Initialize priority of this instance to default priority */
927 fh->prio = V4L2_PRIORITY_UNSET;
928 v4l2_prio_open(&ch->prio, &fh->prio);
929 mutex_unlock(&common->lock);
934 * vpif_release : function to clean up file close
935 * @filep: file pointer
937 * This function deletes buffer queue, frees the buffers and the vpif file
940 static int vpif_release(struct file *filep)
942 struct vpif_fh *fh = filep->private_data;
943 struct channel_obj *ch = fh->channel;
944 struct common_obj *common;
946 vpif_dbg(2, debug, "vpif_release\n");
948 common = &ch->common[VPIF_VIDEO_INDEX];
950 mutex_lock(&common->lock);
951 /* if this instance is doing IO */
952 if (fh->io_allowed[VPIF_VIDEO_INDEX]) {
953 /* Reset io_usrs member of channel object */
955 /* Disable channel as per its device type and channel id */
956 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
958 channel0_intr_enable(0);
960 if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) ||
961 (2 == common->started)) {
963 channel1_intr_enable(0);
966 /* Free buffers allocated */
967 vb2_queue_release(&common->buffer_queue);
968 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
971 /* Decrement channel usrs counter */
974 /* Close the priority */
975 v4l2_prio_close(&ch->prio, fh->prio);
980 mutex_unlock(&common->lock);
981 filep->private_data = NULL;
987 * vpif_reqbufs() - request buffer handler
990 * @reqbuf: request buffer structure ptr
992 static int vpif_reqbufs(struct file *file, void *priv,
993 struct v4l2_requestbuffers *reqbuf)
995 struct vpif_fh *fh = priv;
996 struct channel_obj *ch = fh->channel;
997 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 (!common->alloc_ctx) {
1028 vpif_err("Failed to get the context\n");
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);
1041 /* Set io allowed member of file handle to TRUE */
1042 fh->io_allowed[index] = 1;
1043 /* Increment io usrs member of channel object to 1 */
1044 common->io_usrs = 1;
1045 /* Store type of memory requested in channel object */
1046 common->memory = reqbuf->memory;
1047 INIT_LIST_HEAD(&common->dma_queue);
1049 /* Allocate buffers */
1050 return vb2_reqbufs(&common->buffer_queue, reqbuf);
1054 * vpif_querybuf() - query buffer handler
1056 * @priv: file handle
1057 * @buf: v4l2 buffer structure ptr
1059 static int vpif_querybuf(struct file *file, void *priv,
1060 struct v4l2_buffer *buf)
1062 struct vpif_fh *fh = priv;
1063 struct channel_obj *ch = fh->channel;
1064 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1066 vpif_dbg(2, debug, "vpif_querybuf\n");
1068 if (common->fmt.type != buf->type)
1071 if (common->memory != V4L2_MEMORY_MMAP) {
1072 vpif_dbg(1, debug, "Invalid memory\n");
1076 return vb2_querybuf(&common->buffer_queue, buf);
1080 * vpif_qbuf() - query buffer handler
1082 * @priv: file handle
1083 * @buf: v4l2 buffer structure ptr
1085 static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
1088 struct vpif_fh *fh = priv;
1089 struct channel_obj *ch = fh->channel;
1090 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1091 struct v4l2_buffer tbuf = *buf;
1093 vpif_dbg(2, debug, "vpif_qbuf\n");
1095 if (common->fmt.type != tbuf.type) {
1096 vpif_err("invalid buffer type\n");
1100 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1101 vpif_err("fh io not allowed\n");
1105 return vb2_qbuf(&common->buffer_queue, buf);
1109 * vpif_dqbuf() - query buffer handler
1111 * @priv: file handle
1112 * @buf: v4l2 buffer structure ptr
1114 static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
1116 struct vpif_fh *fh = priv;
1117 struct channel_obj *ch = fh->channel;
1118 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1120 vpif_dbg(2, debug, "vpif_dqbuf\n");
1122 return vb2_dqbuf(&common->buffer_queue, buf,
1123 (file->f_flags & O_NONBLOCK));
1127 * vpif_streamon() - streamon handler
1129 * @priv: file handle
1130 * @buftype: v4l2 buffer type
1132 static int vpif_streamon(struct file *file, void *priv,
1133 enum v4l2_buf_type buftype)
1136 struct vpif_fh *fh = priv;
1137 struct channel_obj *ch = fh->channel;
1138 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1139 struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id];
1140 struct vpif_params *vpif;
1143 vpif_dbg(2, debug, "vpif_streamon\n");
1145 vpif = &ch->vpifparams;
1147 if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1148 vpif_dbg(1, debug, "buffer type not supported\n");
1152 /* If file handle is not allowed IO, return error */
1153 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1154 vpif_dbg(1, debug, "io not allowed\n");
1158 /* If Streaming is already started, return error */
1159 if (common->started) {
1160 vpif_dbg(1, debug, "channel->started\n");
1164 if ((ch->channel_id == VPIF_CHANNEL0_VIDEO &&
1165 oth_ch->common[VPIF_VIDEO_INDEX].started &&
1166 vpif->std_info.ycmux_mode == 0) ||
1167 ((ch->channel_id == VPIF_CHANNEL1_VIDEO) &&
1168 (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) {
1169 vpif_dbg(1, debug, "other channel is being used\n");
1173 ret = vpif_check_format(ch, &common->fmt.fmt.pix, 0);
1177 /* Enable streamon on the sub device */
1178 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video,
1181 if (ret && (ret != -ENOIOCTLCMD)) {
1182 vpif_dbg(1, debug, "stream on failed in subdev\n");
1186 /* Call vb2_streamon to start streaming in videobuf2 */
1187 ret = vb2_streamon(&common->buffer_queue, buftype);
1189 vpif_dbg(1, debug, "vb2_streamon\n");
1197 * vpif_streamoff() - streamoff handler
1199 * @priv: file handle
1200 * @buftype: v4l2 buffer type
1202 static int vpif_streamoff(struct file *file, void *priv,
1203 enum v4l2_buf_type buftype)
1206 struct vpif_fh *fh = priv;
1207 struct channel_obj *ch = fh->channel;
1208 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1211 vpif_dbg(2, debug, "vpif_streamoff\n");
1213 if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1214 vpif_dbg(1, debug, "buffer type not supported\n");
1218 /* If io is allowed for this file handle, return error */
1219 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1220 vpif_dbg(1, debug, "io not allowed\n");
1224 /* If streaming is not started, return error */
1225 if (!common->started) {
1226 vpif_dbg(1, debug, "channel->started\n");
1230 /* disable channel */
1231 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
1233 channel0_intr_enable(0);
1236 channel1_intr_enable(0);
1239 common->started = 0;
1241 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video,
1244 if (ret && (ret != -ENOIOCTLCMD))
1245 vpif_dbg(1, debug, "stream off failed in subdev\n");
1247 return vb2_streamoff(&common->buffer_queue, buftype);
1251 * vpif_map_sub_device_to_input() - Maps sub device to input
1252 * @ch - ptr to channel
1253 * @config - ptr to capture configuration
1254 * @input_index - Given input index from application
1255 * @sub_device_index - index into sd table
1257 * lookup the sub device information for a given input index.
1258 * we report all the inputs to application. inputs table also
1259 * has sub device name for the each input
1261 static struct vpif_subdev_info *vpif_map_sub_device_to_input(
1262 struct channel_obj *ch,
1263 struct vpif_capture_config *vpif_cfg,
1265 int *sub_device_index)
1267 struct vpif_capture_chan_config *chan_cfg;
1268 struct vpif_subdev_info *subdev_info = NULL;
1269 const char *subdev_name = NULL;
1272 vpif_dbg(2, debug, "vpif_map_sub_device_to_input\n");
1274 chan_cfg = &vpif_cfg->chan_config[ch->channel_id];
1277 * search through the inputs to find the sub device supporting
1280 for (i = 0; i < chan_cfg->input_count; i++) {
1281 /* For each sub device, loop through input */
1282 if (i == input_index) {
1283 subdev_name = chan_cfg->inputs[i].subdev_name;
1288 /* if reached maximum. return null */
1289 if (i == chan_cfg->input_count || (NULL == subdev_name))
1292 /* loop through the sub device list to get the sub device info */
1293 for (i = 0; i < vpif_cfg->subdev_count; i++) {
1294 subdev_info = &vpif_cfg->subdev_info[i];
1295 if (!strcmp(subdev_info->name, subdev_name))
1299 if (i == vpif_cfg->subdev_count)
1302 /* check if the sub device is registered */
1303 if (NULL == vpif_obj.sd[i])
1306 *sub_device_index = i;
1311 * vpif_querystd() - querystd handler
1313 * @priv: file handle
1314 * @std_id: ptr to std id
1316 * This function is called to detect standard at the selected input
1318 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
1320 struct vpif_fh *fh = priv;
1321 struct channel_obj *ch = fh->channel;
1324 vpif_dbg(2, debug, "vpif_querystd\n");
1326 /* Call querystd function of decoder device */
1327 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video,
1330 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
1336 * vpif_g_std() - get STD handler
1338 * @priv: file handle
1339 * @std_id: ptr to std id
1341 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
1343 struct vpif_fh *fh = priv;
1344 struct channel_obj *ch = fh->channel;
1346 vpif_dbg(2, debug, "vpif_g_std\n");
1348 *std = ch->video.stdid;
1353 * vpif_s_std() - set STD handler
1355 * @priv: file handle
1356 * @std_id: ptr to std id
1358 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
1360 struct vpif_fh *fh = priv;
1361 struct channel_obj *ch = fh->channel;
1362 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1365 vpif_dbg(2, debug, "vpif_s_std\n");
1367 if (common->started) {
1368 vpif_err("streaming in progress\n");
1372 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
1373 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
1374 if (!fh->initialized) {
1375 vpif_dbg(1, debug, "Channel Busy\n");
1380 ret = v4l2_prio_check(&ch->prio, fh->prio);
1384 fh->initialized = 1;
1386 /* Call encoder subdevice function to set the standard */
1387 ch->video.stdid = *std_id;
1388 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1390 /* Get the information about the standard */
1391 if (vpif_update_std_info(ch)) {
1392 vpif_err("Error getting the standard info\n");
1396 /* Configure the default format information */
1397 vpif_config_format(ch);
1399 /* set standard in the sub device */
1400 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core,
1403 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
1408 * vpif_enum_input() - ENUMINPUT handler
1410 * @priv: file handle
1411 * @input: ptr to input structure
1413 static int vpif_enum_input(struct file *file, void *priv,
1414 struct v4l2_input *input)
1417 struct vpif_capture_config *config = vpif_dev->platform_data;
1418 struct vpif_capture_chan_config *chan_cfg;
1419 struct vpif_fh *fh = priv;
1420 struct channel_obj *ch = fh->channel;
1422 chan_cfg = &config->chan_config[ch->channel_id];
1424 if (input->index >= chan_cfg->input_count) {
1425 vpif_dbg(1, debug, "Invalid input index\n");
1429 memcpy(input, &chan_cfg->inputs[input->index].input,
1435 * vpif_g_input() - Get INPUT handler
1437 * @priv: file handle
1438 * @index: ptr to input index
1440 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
1442 struct vpif_fh *fh = priv;
1443 struct channel_obj *ch = fh->channel;
1444 struct video_obj *vid_ch = &ch->video;
1446 *index = vid_ch->input_idx;
1452 * vpif_s_input() - Set INPUT handler
1454 * @priv: file handle
1455 * @index: input index
1457 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
1459 struct vpif_capture_config *config = vpif_dev->platform_data;
1460 struct vpif_capture_chan_config *chan_cfg;
1461 struct vpif_fh *fh = priv;
1462 struct channel_obj *ch = fh->channel;
1463 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1464 struct video_obj *vid_ch = &ch->video;
1465 struct vpif_subdev_info *subdev_info;
1466 int ret = 0, sd_index = 0;
1467 u32 input = 0, output = 0;
1469 chan_cfg = &config->chan_config[ch->channel_id];
1471 if (common->started) {
1472 vpif_err("Streaming in progress\n");
1476 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
1477 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
1478 if (!fh->initialized) {
1479 vpif_dbg(1, debug, "Channel Busy\n");
1484 ret = v4l2_prio_check(&ch->prio, fh->prio);
1488 fh->initialized = 1;
1489 subdev_info = vpif_map_sub_device_to_input(ch, config, index,
1491 if (NULL == subdev_info) {
1493 "couldn't lookup sub device for the input index\n");
1497 /* first setup input path from sub device to vpif */
1498 if (config->setup_input_path) {
1499 ret = config->setup_input_path(ch->channel_id,
1502 vpif_dbg(1, debug, "couldn't setup input path for the"
1503 " sub device %s, for input index %d\n",
1504 subdev_info->name, index);
1509 if (subdev_info->can_route) {
1510 input = subdev_info->input;
1511 output = subdev_info->output;
1512 ret = v4l2_subdev_call(vpif_obj.sd[sd_index], video, s_routing,
1515 vpif_dbg(1, debug, "Failed to set input\n");
1519 vid_ch->input_idx = index;
1520 ch->curr_subdev_info = subdev_info;
1521 ch->curr_sd_index = sd_index;
1522 /* copy interface parameters to vpif */
1523 ch->vpifparams.iface = subdev_info->vpif_if;
1525 /* update tvnorms from the sub device input info */
1526 ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std;
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->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1659 strlcpy(cap->driver, "vpif capture", sizeof(cap->driver));
1660 strlcpy(cap->bus_info, "VPIF Platform", sizeof(cap->bus_info));
1661 strlcpy(cap->card, config->card_name, sizeof(cap->card));
1667 * vpif_g_priority() - get priority handler
1669 * @priv: file handle
1670 * @prio: ptr to v4l2_priority structure
1672 static int vpif_g_priority(struct file *file, void *priv,
1673 enum v4l2_priority *prio)
1675 struct vpif_fh *fh = priv;
1676 struct channel_obj *ch = fh->channel;
1678 *prio = v4l2_prio_max(&ch->prio);
1684 * vpif_s_priority() - set priority handler
1686 * @priv: file handle
1687 * @prio: ptr to v4l2_priority structure
1689 static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p)
1691 struct vpif_fh *fh = priv;
1692 struct channel_obj *ch = fh->channel;
1694 return v4l2_prio_change(&ch->prio, &fh->prio, p);
1698 * vpif_cropcap() - cropcap handler
1700 * @priv: file handle
1701 * @crop: ptr to v4l2_cropcap structure
1703 static int vpif_cropcap(struct file *file, void *priv,
1704 struct v4l2_cropcap *crop)
1706 struct vpif_fh *fh = priv;
1707 struct channel_obj *ch = fh->channel;
1708 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1710 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != crop->type)
1713 crop->bounds.left = 0;
1714 crop->bounds.top = 0;
1715 crop->bounds.height = common->height;
1716 crop->bounds.width = common->width;
1717 crop->defrect = crop->bounds;
1722 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1724 * @priv: file handle
1725 * @timings: input timings
1728 vpif_enum_dv_timings(struct file *file, void *priv,
1729 struct v4l2_enum_dv_timings *timings)
1731 struct vpif_fh *fh = priv;
1732 struct channel_obj *ch = fh->channel;
1734 return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index],
1735 video, enum_dv_timings, timings);
1739 * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1741 * @priv: file handle
1742 * @timings: input timings
1745 vpif_query_dv_timings(struct file *file, void *priv,
1746 struct v4l2_dv_timings *timings)
1748 struct vpif_fh *fh = priv;
1749 struct channel_obj *ch = fh->channel;
1751 return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index],
1752 video, query_dv_timings, timings);
1756 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1758 * @priv: file handle
1759 * @timings: digital video timings
1761 static int vpif_s_dv_timings(struct file *file, void *priv,
1762 struct v4l2_dv_timings *timings)
1764 struct vpif_fh *fh = priv;
1765 struct channel_obj *ch = fh->channel;
1766 struct vpif_params *vpifparams = &ch->vpifparams;
1767 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1768 struct video_obj *vid_ch = &ch->video;
1769 struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1772 if (timings->type != V4L2_DV_BT_656_1120) {
1773 vpif_dbg(2, debug, "Timing type not defined\n");
1777 /* Configure subdevice timings, if any */
1778 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index],
1779 video, s_dv_timings, timings);
1780 if (ret == -ENOIOCTLCMD) {
1781 vpif_dbg(2, debug, "Custom DV timings not supported by "
1786 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1790 if (!(timings->bt.width && timings->bt.height &&
1791 (timings->bt.hbackporch ||
1792 timings->bt.hfrontporch ||
1793 timings->bt.hsync) &&
1794 timings->bt.vfrontporch &&
1795 (timings->bt.vbackporch ||
1796 timings->bt.vsync))) {
1797 vpif_dbg(2, debug, "Timings for width, height, "
1798 "horizontal back porch, horizontal sync, "
1799 "horizontal front porch, vertical back porch, "
1800 "vertical sync and vertical back porch "
1801 "must be defined\n");
1805 vid_ch->dv_timings = *timings;
1807 /* Configure video port timings */
1809 std_info->eav2sav = bt->hbackporch + bt->hfrontporch +
1811 std_info->sav2eav = bt->width;
1814 std_info->l3 = bt->vsync + bt->vbackporch + 1;
1816 if (bt->interlaced) {
1817 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1818 std_info->vsize = bt->height * 2 +
1819 bt->vfrontporch + bt->vsync + bt->vbackporch +
1820 bt->il_vfrontporch + bt->il_vsync +
1822 std_info->l5 = std_info->vsize/2 -
1823 (bt->vfrontporch - 1);
1824 std_info->l7 = std_info->vsize/2 + 1;
1825 std_info->l9 = std_info->l7 + bt->il_vsync +
1826 bt->il_vbackporch + 1;
1827 std_info->l11 = std_info->vsize -
1828 (bt->il_vfrontporch - 1);
1830 vpif_dbg(2, debug, "Required timing values for "
1831 "interlaced BT format missing\n");
1835 std_info->vsize = bt->height + bt->vfrontporch +
1836 bt->vsync + bt->vbackporch;
1837 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1839 strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME);
1840 std_info->width = bt->width;
1841 std_info->height = bt->height;
1842 std_info->frm_fmt = bt->interlaced ? 0 : 1;
1843 std_info->ycmux_mode = 0;
1844 std_info->capture_format = 0;
1845 std_info->vbi_supported = 0;
1846 std_info->hd_sd = 1;
1847 std_info->stdid = 0;
1854 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1856 * @priv: file handle
1857 * @timings: digital video timings
1859 static int vpif_g_dv_timings(struct file *file, void *priv,
1860 struct v4l2_dv_timings *timings)
1862 struct vpif_fh *fh = priv;
1863 struct channel_obj *ch = fh->channel;
1864 struct video_obj *vid_ch = &ch->video;
1866 *timings = vid_ch->dv_timings;
1872 * vpif_g_chip_ident() - Identify the chip
1874 * @priv: file handle
1875 * @chip: chip identity
1877 * Returns zero or -EINVAL if read operations fails.
1879 static int vpif_g_chip_ident(struct file *file, void *priv,
1880 struct v4l2_dbg_chip_ident *chip)
1882 chip->ident = V4L2_IDENT_NONE;
1884 if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
1885 chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) {
1886 vpif_dbg(2, debug, "match_type is invalid.\n");
1890 return v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 0, core,
1891 g_chip_ident, chip);
1894 #ifdef CONFIG_VIDEO_ADV_DEBUG
1896 * vpif_dbg_g_register() - Read register
1898 * @priv: file handle
1899 * @reg: register to be read
1902 * Returns zero or -EINVAL if read operations fails.
1904 static int vpif_dbg_g_register(struct file *file, void *priv,
1905 struct v4l2_dbg_register *reg){
1906 struct vpif_fh *fh = priv;
1907 struct channel_obj *ch = fh->channel;
1909 return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core,
1914 * vpif_dbg_s_register() - Write to register
1916 * @priv: file handle
1917 * @reg: register to be modified
1920 * Returns zero or -EINVAL if write operations fails.
1922 static int vpif_dbg_s_register(struct file *file, void *priv,
1923 struct v4l2_dbg_register *reg){
1924 struct vpif_fh *fh = priv;
1925 struct channel_obj *ch = fh->channel;
1927 return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core,
1933 * vpif_log_status() - Status information
1935 * @priv: file handle
1939 static int vpif_log_status(struct file *filep, void *priv)
1941 /* status for sub devices */
1942 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1947 /* vpif capture ioctl operations */
1948 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1949 .vidioc_querycap = vpif_querycap,
1950 .vidioc_g_priority = vpif_g_priority,
1951 .vidioc_s_priority = vpif_s_priority,
1952 .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap,
1953 .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap,
1954 .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap,
1955 .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap,
1956 .vidioc_enum_input = vpif_enum_input,
1957 .vidioc_s_input = vpif_s_input,
1958 .vidioc_g_input = vpif_g_input,
1959 .vidioc_reqbufs = vpif_reqbufs,
1960 .vidioc_querybuf = vpif_querybuf,
1961 .vidioc_querystd = vpif_querystd,
1962 .vidioc_s_std = vpif_s_std,
1963 .vidioc_g_std = vpif_g_std,
1964 .vidioc_qbuf = vpif_qbuf,
1965 .vidioc_dqbuf = vpif_dqbuf,
1966 .vidioc_streamon = vpif_streamon,
1967 .vidioc_streamoff = vpif_streamoff,
1968 .vidioc_cropcap = vpif_cropcap,
1969 .vidioc_enum_dv_timings = vpif_enum_dv_timings,
1970 .vidioc_query_dv_timings = vpif_query_dv_timings,
1971 .vidioc_s_dv_timings = vpif_s_dv_timings,
1972 .vidioc_g_dv_timings = vpif_g_dv_timings,
1973 .vidioc_g_chip_ident = vpif_g_chip_ident,
1974 #ifdef CONFIG_VIDEO_ADV_DEBUG
1975 .vidioc_g_register = vpif_dbg_g_register,
1976 .vidioc_s_register = vpif_dbg_s_register,
1978 .vidioc_log_status = vpif_log_status,
1981 /* vpif file operations */
1982 static struct v4l2_file_operations vpif_fops = {
1983 .owner = THIS_MODULE,
1985 .release = vpif_release,
1986 .unlocked_ioctl = video_ioctl2,
1991 /* vpif video template */
1992 static struct video_device vpif_video_template = {
1996 .ioctl_ops = &vpif_ioctl_ops,
2000 * initialize_vpif() - Initialize vpif data structures
2002 * Allocate memory for data structures and initialize them
2004 static int initialize_vpif(void)
2007 int free_channel_objects_index;
2009 /* Default number of buffers should be 3 */
2010 if ((ch0_numbuffers > 0) &&
2011 (ch0_numbuffers < config_params.min_numbuffers))
2012 ch0_numbuffers = config_params.min_numbuffers;
2013 if ((ch1_numbuffers > 0) &&
2014 (ch1_numbuffers < config_params.min_numbuffers))
2015 ch1_numbuffers = config_params.min_numbuffers;
2017 /* Set buffer size to min buffers size if it is invalid */
2018 if (ch0_bufsize < config_params.min_bufsize[VPIF_CHANNEL0_VIDEO])
2020 config_params.min_bufsize[VPIF_CHANNEL0_VIDEO];
2021 if (ch1_bufsize < config_params.min_bufsize[VPIF_CHANNEL1_VIDEO])
2023 config_params.min_bufsize[VPIF_CHANNEL1_VIDEO];
2025 config_params.numbuffers[VPIF_CHANNEL0_VIDEO] = ch0_numbuffers;
2026 config_params.numbuffers[VPIF_CHANNEL1_VIDEO] = ch1_numbuffers;
2027 if (ch0_numbuffers) {
2028 config_params.channel_bufsize[VPIF_CHANNEL0_VIDEO]
2031 if (ch1_numbuffers) {
2032 config_params.channel_bufsize[VPIF_CHANNEL1_VIDEO]
2036 /* Allocate memory for six channel objects */
2037 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
2039 kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
2040 /* If memory allocation fails, return error */
2041 if (!vpif_obj.dev[i]) {
2042 free_channel_objects_index = i;
2044 goto vpif_init_free_channel_objects;
2049 vpif_init_free_channel_objects:
2050 for (j = 0; j < free_channel_objects_index; j++)
2051 kfree(vpif_obj.dev[j]);
2056 * vpif_probe : This function probes the vpif capture driver
2057 * @pdev: platform device pointer
2059 * This creates device entries by register itself to the V4L2 driver and
2060 * initializes fields of each channel objects
2062 static __init int vpif_probe(struct platform_device *pdev)
2064 struct vpif_subdev_info *subdevdata;
2065 struct vpif_capture_config *config;
2066 int i, j, k, m, q, err;
2067 struct i2c_adapter *i2c_adap;
2068 struct channel_obj *ch;
2069 struct common_obj *common;
2070 struct video_device *vfd;
2071 struct resource *res;
2075 vpif_dev = &pdev->dev;
2077 err = initialize_vpif();
2079 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
2083 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
2085 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
2090 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) {
2091 for (i = res->start; i <= res->end; i++) {
2092 if (request_irq(i, vpif_channel_isr, IRQF_SHARED,
2094 (void *)(&vpif_obj.dev[k]->channel_id))) {
2103 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
2104 /* Get the pointer to the channel object */
2105 ch = vpif_obj.dev[i];
2106 /* Allocate memory for video device */
2107 vfd = video_device_alloc();
2109 for (j = 0; j < i; j++) {
2110 ch = vpif_obj.dev[j];
2111 video_device_release(ch->video_dev);
2114 goto vpif_dev_alloc_err;
2117 /* Initialize field of video device */
2118 *vfd = vpif_video_template;
2119 vfd->v4l2_dev = &vpif_obj.v4l2_dev;
2120 vfd->release = video_device_release;
2121 snprintf(vfd->name, sizeof(vfd->name),
2122 "VPIF_Capture_DRIVER_V%s",
2123 VPIF_CAPTURE_VERSION);
2124 /* Set video_dev to the video device */
2125 ch->video_dev = vfd;
2128 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2130 size = resource_size(res);
2131 /* The resources are divided into two equal memory and when we
2132 * have HD output we can add them together
2134 for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
2135 ch = vpif_obj.dev[j];
2137 /* only enabled if second resource exists */
2138 config_params.video_limit[ch->channel_id] = 0;
2140 config_params.video_limit[ch->channel_id] =
2145 for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
2146 ch = vpif_obj.dev[j];
2148 common = &(ch->common[VPIF_VIDEO_INDEX]);
2149 spin_lock_init(&common->irqlock);
2150 mutex_init(&common->lock);
2151 ch->video_dev->lock = &common->lock;
2152 /* Initialize prio member of channel object */
2153 v4l2_prio_init(&ch->prio);
2154 err = video_register_device(ch->video_dev,
2155 VFL_TYPE_GRABBER, (j ? 1 : 0));
2159 video_set_drvdata(ch->video_dev, ch);
2163 i2c_adap = i2c_get_adapter(1);
2164 config = pdev->dev.platform_data;
2166 subdev_count = config->subdev_count;
2167 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
2169 if (vpif_obj.sd == NULL) {
2170 vpif_err("unable to allocate memory for subdevice pointers\n");
2175 for (i = 0; i < subdev_count; i++) {
2176 subdevdata = &config->subdev_info[i];
2178 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
2180 &subdevdata->board_info,
2183 if (!vpif_obj.sd[i]) {
2184 vpif_err("Error registering v4l2 subdevice\n");
2185 goto probe_subdev_out;
2187 v4l2_info(&vpif_obj.v4l2_dev, "registered sub device %s\n",
2191 vpif_obj.sd[i]->grp_id = 1 << i;
2194 v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
2198 /* free sub devices memory */
2201 j = VPIF_CAPTURE_MAX_DEVICES;
2203 for (k = 0; k < j; k++) {
2204 /* Get the pointer to the channel object */
2205 ch = vpif_obj.dev[k];
2206 /* Unregister video device */
2207 video_unregister_device(ch->video_dev);
2211 k = VPIF_CAPTURE_MAX_DEVICES-1;
2212 res = platform_get_resource(pdev, IORESOURCE_IRQ, k);
2216 for (q = k; q >= 0; q--) {
2217 for (m = i; m >= (int)res->start; m--)
2218 free_irq(m, (void *)(&vpif_obj.dev[q]->channel_id));
2220 res = platform_get_resource(pdev, IORESOURCE_IRQ, q-1);
2224 v4l2_device_unregister(&vpif_obj.v4l2_dev);
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);