1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2009 Texas Instruments Inc
4 * Copyright (C) 2014 Lad, Prabhakar <prabhakar.csengg@gmail.com>
5 *
6 * TODO : add support for VBI & HBI data service
7 * add static buffer allocation
8 */
9
10 #include <linux/module.h>
11 #include <linux/interrupt.h>
12 #include <linux/of_graph.h>
13 #include <linux/platform_device.h>
14 #include <linux/slab.h>
15
16 #include <media/v4l2-fwnode.h>
17 #include <media/v4l2-ioctl.h>
18 #include <media/i2c/tvp514x.h>
19 #include <media/v4l2-mediabus.h>
20
21 #include <linux/videodev2.h>
22
23 #include "vpif.h"
24 #include "vpif_capture.h"
25
26 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
27 MODULE_LICENSE("GPL");
28 MODULE_VERSION(VPIF_CAPTURE_VERSION);
29
30 #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
31 #define vpif_dbg(level, debug, fmt, arg...) \
32 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
33
34 static int debug = 1;
35
36 module_param(debug, int, 0644);
37
38 MODULE_PARM_DESC(debug, "Debug level 0-1");
39
40 #define VPIF_DRIVER_NAME "vpif_capture"
41 MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
42
43 /* global variables */
44 static struct vpif_device vpif_obj = { {NULL} };
45 static struct device *vpif_dev;
46 static void vpif_calculate_offsets(struct channel_obj *ch);
47 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
48
49 static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} };
50
51 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
52 static int ycmux_mode;
53
54 static inline
to_vpif_buffer(struct vb2_v4l2_buffer * vb)55 struct vpif_cap_buffer *to_vpif_buffer(struct vb2_v4l2_buffer *vb)
56 {
57 return container_of(vb, struct vpif_cap_buffer, vb);
58 }
59
60 /**
61 * vpif_buffer_prepare : callback function for buffer prepare
62 * @vb: ptr to vb2_buffer
63 *
64 * This is the callback function for buffer prepare when vb2_qbuf()
65 * function is called. The buffer is prepared and user space virtual address
66 * or user address is converted into physical address
67 */
vpif_buffer_prepare(struct vb2_buffer * vb)68 static int vpif_buffer_prepare(struct vb2_buffer *vb)
69 {
70 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
71 struct vb2_queue *q = vb->vb2_queue;
72 struct channel_obj *ch = vb2_get_drv_priv(q);
73 struct common_obj *common;
74 unsigned long addr;
75
76 vpif_dbg(2, debug, "vpif_buffer_prepare\n");
77
78 common = &ch->common[VPIF_VIDEO_INDEX];
79
80 vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
81 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
82 return -EINVAL;
83
84 vbuf->field = common->fmt.fmt.pix.field;
85
86 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
87 if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
88 !IS_ALIGNED((addr + common->ybtm_off), 8) ||
89 !IS_ALIGNED((addr + common->ctop_off), 8) ||
90 !IS_ALIGNED((addr + common->cbtm_off), 8)) {
91 vpif_dbg(1, debug, "offset is not aligned\n");
92 return -EINVAL;
93 }
94
95 return 0;
96 }
97
98 /**
99 * vpif_buffer_queue_setup : Callback function for buffer setup.
100 * @vq: vb2_queue ptr
101 * @nbuffers: ptr to number of buffers requested by application
102 * @nplanes: contains number of distinct video planes needed to hold a frame
103 * @sizes: contains the size (in bytes) of each plane.
104 * @alloc_devs: ptr to allocation context
105 *
106 * This callback function is called when reqbuf() is called to adjust
107 * the buffer count and buffer size
108 */
vpif_buffer_queue_setup(struct vb2_queue * vq,unsigned int * nbuffers,unsigned int * nplanes,unsigned int sizes[],struct device * alloc_devs[])109 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
110 unsigned int *nbuffers, unsigned int *nplanes,
111 unsigned int sizes[], struct device *alloc_devs[])
112 {
113 struct channel_obj *ch = vb2_get_drv_priv(vq);
114 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
115 unsigned size = common->fmt.fmt.pix.sizeimage;
116 unsigned int q_num_bufs = vb2_get_num_buffers(vq);
117
118 vpif_dbg(2, debug, "vpif_buffer_setup\n");
119
120 if (*nplanes) {
121 if (sizes[0] < size)
122 return -EINVAL;
123 size = sizes[0];
124 }
125
126 if (q_num_bufs + *nbuffers < 3)
127 *nbuffers = 3 - q_num_bufs;
128
129 *nplanes = 1;
130 sizes[0] = size;
131
132 /* Calculate the offset for Y and C data in the buffer */
133 vpif_calculate_offsets(ch);
134
135 return 0;
136 }
137
138 /**
139 * vpif_buffer_queue : Callback function to add buffer to DMA queue
140 * @vb: ptr to vb2_buffer
141 */
vpif_buffer_queue(struct vb2_buffer * vb)142 static void vpif_buffer_queue(struct vb2_buffer *vb)
143 {
144 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
145 struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
146 struct vpif_cap_buffer *buf = to_vpif_buffer(vbuf);
147 struct common_obj *common;
148 unsigned long flags;
149
150 common = &ch->common[VPIF_VIDEO_INDEX];
151
152 vpif_dbg(2, debug, "vpif_buffer_queue\n");
153
154 spin_lock_irqsave(&common->irqlock, flags);
155 /* add the buffer to the DMA queue */
156 list_add_tail(&buf->list, &common->dma_queue);
157 spin_unlock_irqrestore(&common->irqlock, flags);
158 }
159
160 /**
161 * vpif_start_streaming : Starts the DMA engine for streaming
162 * @vq: ptr to vb2_buffer
163 * @count: number of buffers
164 */
vpif_start_streaming(struct vb2_queue * vq,unsigned int count)165 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
166 {
167 struct vpif_capture_config *vpif_config_data =
168 vpif_dev->platform_data;
169 struct channel_obj *ch = vb2_get_drv_priv(vq);
170 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
171 struct vpif_params *vpif = &ch->vpifparams;
172 struct vpif_cap_buffer *buf, *tmp;
173 unsigned long addr, flags;
174 int ret;
175
176 /* Initialize field_id */
177 ch->field_id = 0;
178
179 /* configure 1 or 2 channel mode */
180 if (vpif_config_data->setup_input_channel_mode) {
181 ret = vpif_config_data->
182 setup_input_channel_mode(vpif->std_info.ycmux_mode);
183 if (ret < 0) {
184 vpif_dbg(1, debug, "can't set vpif channel mode\n");
185 goto err;
186 }
187 }
188
189 ret = v4l2_subdev_call(ch->sd, video, s_stream, 1);
190 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
191 vpif_dbg(1, debug, "stream on failed in subdev\n");
192 goto err;
193 }
194
195 /* Call vpif_set_params function to set the parameters and addresses */
196 ret = vpif_set_video_params(vpif, ch->channel_id);
197 if (ret < 0) {
198 vpif_dbg(1, debug, "can't set video params\n");
199 goto err;
200 }
201
202 ycmux_mode = ret;
203 vpif_config_addr(ch, ret);
204
205 /* Get the next frame from the buffer queue */
206 spin_lock_irqsave(&common->irqlock, flags);
207 common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
208 struct vpif_cap_buffer, list);
209 /* Remove buffer from the buffer queue */
210 list_del(&common->cur_frm->list);
211 spin_unlock_irqrestore(&common->irqlock, flags);
212
213 addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb.vb2_buf, 0);
214
215 common->set_addr(addr + common->ytop_off,
216 addr + common->ybtm_off,
217 addr + common->ctop_off,
218 addr + common->cbtm_off);
219
220 /**
221 * Set interrupt for both the fields in VPIF Register enable channel in
222 * VPIF register
223 */
224 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
225 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
226 channel0_intr_assert();
227 channel0_intr_enable(1);
228 enable_channel0(1);
229 }
230 if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
231 ycmux_mode == 2) {
232 channel1_intr_assert();
233 channel1_intr_enable(1);
234 enable_channel1(1);
235 }
236
237 return 0;
238
239 err:
240 spin_lock_irqsave(&common->irqlock, flags);
241 list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
242 list_del(&buf->list);
243 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
244 }
245 spin_unlock_irqrestore(&common->irqlock, flags);
246
247 return ret;
248 }
249
250 /**
251 * vpif_stop_streaming : Stop the DMA engine
252 * @vq: ptr to vb2_queue
253 *
254 * This callback stops the DMA engine and any remaining buffers
255 * in the DMA queue are released.
256 */
vpif_stop_streaming(struct vb2_queue * vq)257 static void vpif_stop_streaming(struct vb2_queue *vq)
258 {
259 struct channel_obj *ch = vb2_get_drv_priv(vq);
260 struct common_obj *common;
261 unsigned long flags;
262 int ret;
263
264 common = &ch->common[VPIF_VIDEO_INDEX];
265
266 /* Disable channel as per its device type and channel id */
267 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
268 enable_channel0(0);
269 channel0_intr_enable(0);
270 }
271 if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
272 ycmux_mode == 2) {
273 enable_channel1(0);
274 channel1_intr_enable(0);
275 }
276
277 ycmux_mode = 0;
278
279 ret = v4l2_subdev_call(ch->sd, video, s_stream, 0);
280 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
281 vpif_dbg(1, debug, "stream off failed in subdev\n");
282
283 /* release all active buffers */
284 if (common->cur_frm == common->next_frm) {
285 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
286 VB2_BUF_STATE_ERROR);
287 } else {
288 if (common->cur_frm)
289 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
290 VB2_BUF_STATE_ERROR);
291 if (common->next_frm)
292 vb2_buffer_done(&common->next_frm->vb.vb2_buf,
293 VB2_BUF_STATE_ERROR);
294 }
295
296 spin_lock_irqsave(&common->irqlock, flags);
297 while (!list_empty(&common->dma_queue)) {
298 common->next_frm = list_entry(common->dma_queue.next,
299 struct vpif_cap_buffer, list);
300 list_del(&common->next_frm->list);
301 vb2_buffer_done(&common->next_frm->vb.vb2_buf,
302 VB2_BUF_STATE_ERROR);
303 }
304 spin_unlock_irqrestore(&common->irqlock, flags);
305 }
306
307 static const struct vb2_ops video_qops = {
308 .queue_setup = vpif_buffer_queue_setup,
309 .buf_prepare = vpif_buffer_prepare,
310 .start_streaming = vpif_start_streaming,
311 .stop_streaming = vpif_stop_streaming,
312 .buf_queue = vpif_buffer_queue,
313 .wait_prepare = vb2_ops_wait_prepare,
314 .wait_finish = vb2_ops_wait_finish,
315 };
316
317 /**
318 * vpif_process_buffer_complete: process a completed buffer
319 * @common: ptr to common channel object
320 *
321 * This function time stamp the buffer and mark it as DONE. It also
322 * wake up any process waiting on the QUEUE and set the next buffer
323 * as current
324 */
vpif_process_buffer_complete(struct common_obj * common)325 static void vpif_process_buffer_complete(struct common_obj *common)
326 {
327 common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
328 vb2_buffer_done(&common->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
329 /* Make curFrm pointing to nextFrm */
330 common->cur_frm = common->next_frm;
331 }
332
333 /**
334 * vpif_schedule_next_buffer: set next buffer address for capture
335 * @common : ptr to common channel object
336 *
337 * This function will get next buffer from the dma queue and
338 * set the buffer address in the vpif register for capture.
339 * the buffer is marked active
340 */
vpif_schedule_next_buffer(struct common_obj * common)341 static void vpif_schedule_next_buffer(struct common_obj *common)
342 {
343 unsigned long addr = 0;
344
345 spin_lock(&common->irqlock);
346 common->next_frm = list_entry(common->dma_queue.next,
347 struct vpif_cap_buffer, list);
348 /* Remove that buffer from the buffer queue */
349 list_del(&common->next_frm->list);
350 spin_unlock(&common->irqlock);
351 addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 0);
352
353 /* Set top and bottom field addresses in VPIF registers */
354 common->set_addr(addr + common->ytop_off,
355 addr + common->ybtm_off,
356 addr + common->ctop_off,
357 addr + common->cbtm_off);
358 }
359
360 /**
361 * vpif_channel_isr : ISR handler for vpif capture
362 * @irq: irq number
363 * @dev_id: dev_id ptr
364 *
365 * It changes status of the captured buffer, takes next buffer from the queue
366 * and sets its address in VPIF registers
367 */
vpif_channel_isr(int irq,void * dev_id)368 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
369 {
370 struct vpif_device *dev = &vpif_obj;
371 struct common_obj *common;
372 struct channel_obj *ch;
373 int channel_id;
374 int fid = -1, i;
375
376 channel_id = *(int *)(dev_id);
377 if (!vpif_intr_status(channel_id))
378 return IRQ_NONE;
379
380 ch = dev->dev[channel_id];
381
382 for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
383 common = &ch->common[i];
384 /* skip If streaming is not started in this channel */
385 /* Check the field format */
386 if (1 == ch->vpifparams.std_info.frm_fmt ||
387 common->fmt.fmt.pix.field == V4L2_FIELD_NONE) {
388 /* Progressive mode */
389 spin_lock(&common->irqlock);
390 if (list_empty(&common->dma_queue)) {
391 spin_unlock(&common->irqlock);
392 continue;
393 }
394 spin_unlock(&common->irqlock);
395
396 if (!channel_first_int[i][channel_id])
397 vpif_process_buffer_complete(common);
398
399 channel_first_int[i][channel_id] = 0;
400
401 vpif_schedule_next_buffer(common);
402
403
404 channel_first_int[i][channel_id] = 0;
405 } else {
406 /**
407 * Interlaced mode. If it is first interrupt, ignore
408 * it
409 */
410 if (channel_first_int[i][channel_id]) {
411 channel_first_int[i][channel_id] = 0;
412 continue;
413 }
414 if (0 == i) {
415 ch->field_id ^= 1;
416 /* Get field id from VPIF registers */
417 fid = vpif_channel_getfid(ch->channel_id);
418 if (fid != ch->field_id) {
419 /**
420 * If field id does not match stored
421 * field id, make them in sync
422 */
423 if (0 == fid)
424 ch->field_id = fid;
425 return IRQ_HANDLED;
426 }
427 }
428 /* device field id and local field id are in sync */
429 if (0 == fid) {
430 /* this is even field */
431 if (common->cur_frm == common->next_frm)
432 continue;
433
434 /* mark the current buffer as done */
435 vpif_process_buffer_complete(common);
436 } else if (1 == fid) {
437 /* odd field */
438 spin_lock(&common->irqlock);
439 if (list_empty(&common->dma_queue) ||
440 (common->cur_frm != common->next_frm)) {
441 spin_unlock(&common->irqlock);
442 continue;
443 }
444 spin_unlock(&common->irqlock);
445
446 vpif_schedule_next_buffer(common);
447 }
448 }
449 }
450 return IRQ_HANDLED;
451 }
452
453 /**
454 * vpif_update_std_info() - update standard related info
455 * @ch: ptr to channel object
456 *
457 * For a given standard selected by application, update values
458 * in the device data structures
459 */
vpif_update_std_info(struct channel_obj * ch)460 static int vpif_update_std_info(struct channel_obj *ch)
461 {
462 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
463 struct vpif_params *vpifparams = &ch->vpifparams;
464 const struct vpif_channel_config_params *config;
465 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
466 struct video_obj *vid_ch = &ch->video;
467 int index;
468 struct v4l2_pix_format *pixfmt = &common->fmt.fmt.pix;
469
470 vpif_dbg(2, debug, "vpif_update_std_info\n");
471
472 /*
473 * if called after try_fmt or g_fmt, there will already be a size
474 * so use that by default.
475 */
476 if (pixfmt->width && pixfmt->height) {
477 if (pixfmt->field == V4L2_FIELD_ANY ||
478 pixfmt->field == V4L2_FIELD_NONE)
479 pixfmt->field = V4L2_FIELD_NONE;
480
481 vpifparams->iface.if_type = VPIF_IF_BT656;
482 if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10 ||
483 pixfmt->pixelformat == V4L2_PIX_FMT_SBGGR8)
484 vpifparams->iface.if_type = VPIF_IF_RAW_BAYER;
485
486 if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10)
487 vpifparams->params.data_sz = 1; /* 10 bits/pixel. */
488
489 /*
490 * For raw formats from camera sensors, we don't need
491 * the std_info from table lookup, so nothing else to do here.
492 */
493 if (vpifparams->iface.if_type == VPIF_IF_RAW_BAYER) {
494 memset(std_info, 0, sizeof(struct vpif_channel_config_params));
495 vpifparams->std_info.capture_format = 1; /* CCD/raw mode */
496 return 0;
497 }
498 }
499
500 for (index = 0; index < vpif_ch_params_count; index++) {
501 config = &vpif_ch_params[index];
502 if (config->hd_sd == 0) {
503 vpif_dbg(2, debug, "SD format\n");
504 if (config->stdid & vid_ch->stdid) {
505 memcpy(std_info, config, sizeof(*config));
506 break;
507 }
508 } else {
509 vpif_dbg(2, debug, "HD format\n");
510 if (!memcmp(&config->dv_timings, &vid_ch->dv_timings,
511 sizeof(vid_ch->dv_timings))) {
512 memcpy(std_info, config, sizeof(*config));
513 break;
514 }
515 }
516 }
517
518 /* standard not found */
519 if (index == vpif_ch_params_count)
520 return -EINVAL;
521
522 common->fmt.fmt.pix.width = std_info->width;
523 common->width = std_info->width;
524 common->fmt.fmt.pix.height = std_info->height;
525 common->height = std_info->height;
526 common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
527 common->fmt.fmt.pix.bytesperline = std_info->width;
528 vpifparams->video_params.hpitch = std_info->width;
529 vpifparams->video_params.storage_mode = std_info->frm_fmt;
530
531 if (vid_ch->stdid)
532 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
533 else
534 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
535
536 if (ch->vpifparams.std_info.frm_fmt)
537 common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
538 else
539 common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
540
541 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
542 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
543 else
544 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_NV16;
545
546 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
547
548 return 0;
549 }
550
551 /**
552 * vpif_calculate_offsets : This function calculates buffers offsets
553 * @ch : ptr to channel object
554 *
555 * This function calculates buffer offsets for Y and C in the top and
556 * bottom field
557 */
vpif_calculate_offsets(struct channel_obj * ch)558 static void vpif_calculate_offsets(struct channel_obj *ch)
559 {
560 unsigned int hpitch, sizeimage;
561 struct video_obj *vid_ch = &(ch->video);
562 struct vpif_params *vpifparams = &ch->vpifparams;
563 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
564 enum v4l2_field field = common->fmt.fmt.pix.field;
565
566 vpif_dbg(2, debug, "vpif_calculate_offsets\n");
567
568 if (V4L2_FIELD_ANY == field) {
569 if (vpifparams->std_info.frm_fmt)
570 vid_ch->buf_field = V4L2_FIELD_NONE;
571 else
572 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
573 } else
574 vid_ch->buf_field = common->fmt.fmt.pix.field;
575
576 sizeimage = common->fmt.fmt.pix.sizeimage;
577
578 hpitch = common->fmt.fmt.pix.bytesperline;
579
580 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
581 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
582 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
583 common->ytop_off = 0;
584 common->ybtm_off = hpitch;
585 common->ctop_off = sizeimage / 2;
586 common->cbtm_off = sizeimage / 2 + hpitch;
587 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
588 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
589 common->ytop_off = 0;
590 common->ybtm_off = sizeimage / 4;
591 common->ctop_off = sizeimage / 2;
592 common->cbtm_off = common->ctop_off + sizeimage / 4;
593 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
594 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
595 common->ybtm_off = 0;
596 common->ytop_off = sizeimage / 4;
597 common->cbtm_off = sizeimage / 2;
598 common->ctop_off = common->cbtm_off + sizeimage / 4;
599 }
600 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
601 (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
602 vpifparams->video_params.storage_mode = 1;
603 else
604 vpifparams->video_params.storage_mode = 0;
605
606 if (1 == vpifparams->std_info.frm_fmt)
607 vpifparams->video_params.hpitch =
608 common->fmt.fmt.pix.bytesperline;
609 else {
610 if ((field == V4L2_FIELD_ANY)
611 || (field == V4L2_FIELD_INTERLACED))
612 vpifparams->video_params.hpitch =
613 common->fmt.fmt.pix.bytesperline * 2;
614 else
615 vpifparams->video_params.hpitch =
616 common->fmt.fmt.pix.bytesperline;
617 }
618
619 ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
620 }
621
622 /**
623 * vpif_config_addr() - function to configure buffer address in vpif
624 * @ch: channel ptr
625 * @muxmode: channel mux mode
626 */
vpif_config_addr(struct channel_obj * ch,int muxmode)627 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
628 {
629 struct common_obj *common;
630
631 vpif_dbg(2, debug, "vpif_config_addr\n");
632
633 common = &(ch->common[VPIF_VIDEO_INDEX]);
634
635 if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
636 common->set_addr = ch1_set_video_buf_addr;
637 else if (2 == muxmode)
638 common->set_addr = ch0_set_video_buf_addr_yc_nmux;
639 else
640 common->set_addr = ch0_set_video_buf_addr;
641 }
642
643 /**
644 * vpif_input_to_subdev() - Maps input to sub device
645 * @vpif_cfg: global config ptr
646 * @chan_cfg: channel config ptr
647 * @input_index: Given input index from application
648 *
649 * lookup the sub device information for a given input index.
650 * we report all the inputs to application. inputs table also
651 * has sub device name for the each input
652 */
vpif_input_to_subdev(struct vpif_capture_config * vpif_cfg,struct vpif_capture_chan_config * chan_cfg,int input_index)653 static int vpif_input_to_subdev(
654 struct vpif_capture_config *vpif_cfg,
655 struct vpif_capture_chan_config *chan_cfg,
656 int input_index)
657 {
658 struct vpif_subdev_info *subdev_info;
659 const char *subdev_name;
660 int i;
661
662 vpif_dbg(2, debug, "vpif_input_to_subdev\n");
663
664 if (!chan_cfg)
665 return -1;
666 if (input_index >= chan_cfg->input_count)
667 return -1;
668 subdev_name = chan_cfg->inputs[input_index].subdev_name;
669 if (!subdev_name)
670 return -1;
671
672 /* loop through the sub device list to get the sub device info */
673 for (i = 0; i < vpif_cfg->subdev_count; i++) {
674 subdev_info = &vpif_cfg->subdev_info[i];
675 if (subdev_info && !strcmp(subdev_info->name, subdev_name))
676 return i;
677 }
678 return -1;
679 }
680
681 /**
682 * vpif_set_input() - Select an input
683 * @vpif_cfg: global config ptr
684 * @ch: channel
685 * @index: Given input index from application
686 *
687 * Select the given input.
688 */
vpif_set_input(struct vpif_capture_config * vpif_cfg,struct channel_obj * ch,int index)689 static int vpif_set_input(
690 struct vpif_capture_config *vpif_cfg,
691 struct channel_obj *ch,
692 int index)
693 {
694 struct vpif_capture_chan_config *chan_cfg =
695 &vpif_cfg->chan_config[ch->channel_id];
696 struct vpif_subdev_info *subdev_info = NULL;
697 struct v4l2_subdev *sd = NULL;
698 u32 input = 0, output = 0;
699 int sd_index;
700 int ret;
701
702 sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
703 if (sd_index >= 0) {
704 sd = vpif_obj.sd[sd_index];
705 subdev_info = &vpif_cfg->subdev_info[sd_index];
706 } else {
707 /* no subdevice, no input to setup */
708 return 0;
709 }
710
711 /* first setup input path from sub device to vpif */
712 if (sd && vpif_cfg->setup_input_path) {
713 ret = vpif_cfg->setup_input_path(ch->channel_id,
714 subdev_info->name);
715 if (ret < 0) {
716 vpif_dbg(1, debug, "couldn't setup input path for the" \
717 " sub device %s, for input index %d\n",
718 subdev_info->name, index);
719 return ret;
720 }
721 }
722
723 if (sd) {
724 input = chan_cfg->inputs[index].input_route;
725 output = chan_cfg->inputs[index].output_route;
726 ret = v4l2_subdev_call(sd, video, s_routing,
727 input, output, 0);
728 if (ret < 0 && ret != -ENOIOCTLCMD) {
729 vpif_dbg(1, debug, "Failed to set input\n");
730 return ret;
731 }
732 }
733 ch->input_idx = index;
734 ch->sd = sd;
735 /* copy interface parameters to vpif */
736 ch->vpifparams.iface = chan_cfg->vpif_if;
737
738 /* update tvnorms from the sub device input info */
739 ch->video_dev.tvnorms = chan_cfg->inputs[index].input.std;
740 return 0;
741 }
742
743 /**
744 * vpif_querystd() - querystd handler
745 * @file: file ptr
746 * @priv: file handle
747 * @std_id: ptr to std id
748 *
749 * This function is called to detect standard at the selected input
750 */
vpif_querystd(struct file * file,void * priv,v4l2_std_id * std_id)751 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
752 {
753 struct video_device *vdev = video_devdata(file);
754 struct channel_obj *ch = video_get_drvdata(vdev);
755 int ret;
756
757 vpif_dbg(2, debug, "vpif_querystd\n");
758
759 /* Call querystd function of decoder device */
760 ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
761
762 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
763 return -ENODATA;
764 if (ret) {
765 vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
766 return ret;
767 }
768
769 return 0;
770 }
771
772 /**
773 * vpif_g_std() - get STD handler
774 * @file: file ptr
775 * @priv: file handle
776 * @std: ptr to std id
777 */
vpif_g_std(struct file * file,void * priv,v4l2_std_id * std)778 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
779 {
780 struct vpif_capture_config *config = vpif_dev->platform_data;
781 struct video_device *vdev = video_devdata(file);
782 struct channel_obj *ch = video_get_drvdata(vdev);
783 struct vpif_capture_chan_config *chan_cfg;
784 struct v4l2_input input;
785
786 vpif_dbg(2, debug, "vpif_g_std\n");
787
788 if (!config->chan_config[ch->channel_id].inputs)
789 return -ENODATA;
790
791 chan_cfg = &config->chan_config[ch->channel_id];
792 input = chan_cfg->inputs[ch->input_idx].input;
793 if (input.capabilities != V4L2_IN_CAP_STD)
794 return -ENODATA;
795
796 *std = ch->video.stdid;
797 return 0;
798 }
799
800 /**
801 * vpif_s_std() - set STD handler
802 * @file: file ptr
803 * @priv: file handle
804 * @std_id: ptr to std id
805 */
vpif_s_std(struct file * file,void * priv,v4l2_std_id std_id)806 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
807 {
808 struct vpif_capture_config *config = vpif_dev->platform_data;
809 struct video_device *vdev = video_devdata(file);
810 struct channel_obj *ch = video_get_drvdata(vdev);
811 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
812 struct vpif_capture_chan_config *chan_cfg;
813 struct v4l2_input input;
814 int ret;
815
816 vpif_dbg(2, debug, "vpif_s_std\n");
817
818 if (!config->chan_config[ch->channel_id].inputs)
819 return -ENODATA;
820
821 chan_cfg = &config->chan_config[ch->channel_id];
822 input = chan_cfg->inputs[ch->input_idx].input;
823 if (input.capabilities != V4L2_IN_CAP_STD)
824 return -ENODATA;
825
826 if (vb2_is_busy(&common->buffer_queue))
827 return -EBUSY;
828
829 /* Call encoder subdevice function to set the standard */
830 ch->video.stdid = std_id;
831 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
832
833 /* Get the information about the standard */
834 if (vpif_update_std_info(ch)) {
835 vpif_err("Error getting the standard info\n");
836 return -EINVAL;
837 }
838
839 /* set standard in the sub device */
840 ret = v4l2_subdev_call(ch->sd, video, s_std, std_id);
841 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
842 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
843 return ret;
844 }
845 return 0;
846 }
847
848 /**
849 * vpif_enum_input() - ENUMINPUT handler
850 * @file: file ptr
851 * @priv: file handle
852 * @input: ptr to input structure
853 */
vpif_enum_input(struct file * file,void * priv,struct v4l2_input * input)854 static int vpif_enum_input(struct file *file, void *priv,
855 struct v4l2_input *input)
856 {
857
858 struct vpif_capture_config *config = vpif_dev->platform_data;
859 struct video_device *vdev = video_devdata(file);
860 struct channel_obj *ch = video_get_drvdata(vdev);
861 struct vpif_capture_chan_config *chan_cfg;
862
863 chan_cfg = &config->chan_config[ch->channel_id];
864
865 if (input->index >= chan_cfg->input_count)
866 return -EINVAL;
867
868 memcpy(input, &chan_cfg->inputs[input->index].input,
869 sizeof(*input));
870 return 0;
871 }
872
873 /**
874 * vpif_g_input() - Get INPUT handler
875 * @file: file ptr
876 * @priv: file handle
877 * @index: ptr to input index
878 */
vpif_g_input(struct file * file,void * priv,unsigned int * index)879 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
880 {
881 struct video_device *vdev = video_devdata(file);
882 struct channel_obj *ch = video_get_drvdata(vdev);
883
884 *index = ch->input_idx;
885 return 0;
886 }
887
888 /**
889 * vpif_s_input() - Set INPUT handler
890 * @file: file ptr
891 * @priv: file handle
892 * @index: input index
893 */
vpif_s_input(struct file * file,void * priv,unsigned int index)894 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
895 {
896 struct vpif_capture_config *config = vpif_dev->platform_data;
897 struct video_device *vdev = video_devdata(file);
898 struct channel_obj *ch = video_get_drvdata(vdev);
899 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
900 struct vpif_capture_chan_config *chan_cfg;
901
902 chan_cfg = &config->chan_config[ch->channel_id];
903
904 if (index >= chan_cfg->input_count)
905 return -EINVAL;
906
907 if (vb2_is_busy(&common->buffer_queue))
908 return -EBUSY;
909
910 return vpif_set_input(config, ch, index);
911 }
912
913 /**
914 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
915 * @file: file ptr
916 * @priv: file handle
917 * @fmt: ptr to V4L2 format descriptor
918 */
vpif_enum_fmt_vid_cap(struct file * file,void * priv,struct v4l2_fmtdesc * fmt)919 static int vpif_enum_fmt_vid_cap(struct file *file, void *priv,
920 struct v4l2_fmtdesc *fmt)
921 {
922 struct video_device *vdev = video_devdata(file);
923 struct channel_obj *ch = video_get_drvdata(vdev);
924
925 if (fmt->index != 0) {
926 vpif_dbg(1, debug, "Invalid format index\n");
927 return -EINVAL;
928 }
929
930 /* Fill in the information about format */
931 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
932 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
933 else
934 fmt->pixelformat = V4L2_PIX_FMT_NV16;
935 return 0;
936 }
937
938 /**
939 * vpif_try_fmt_vid_cap() - TRY_FMT handler
940 * @file: file ptr
941 * @priv: file handle
942 * @fmt: ptr to v4l2 format structure
943 */
vpif_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * fmt)944 static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
945 struct v4l2_format *fmt)
946 {
947 struct video_device *vdev = video_devdata(file);
948 struct channel_obj *ch = video_get_drvdata(vdev);
949 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
950 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
951
952 common->fmt = *fmt;
953 vpif_update_std_info(ch);
954
955 pixfmt->field = common->fmt.fmt.pix.field;
956 pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
957 pixfmt->bytesperline = common->fmt.fmt.pix.width;
958 pixfmt->width = common->fmt.fmt.pix.width;
959 pixfmt->height = common->fmt.fmt.pix.height;
960 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
961 if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10) {
962 pixfmt->bytesperline = common->fmt.fmt.pix.width * 2;
963 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
964 }
965
966 dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d pixelformat=0x%08x, field=%d, size=%d\n", __func__,
967 pixfmt->width, pixfmt->height,
968 pixfmt->bytesperline, pixfmt->pixelformat,
969 pixfmt->field, pixfmt->sizeimage);
970
971 return 0;
972 }
973
974
975 /**
976 * vpif_g_fmt_vid_cap() - Set INPUT handler
977 * @file: file ptr
978 * @priv: file handle
979 * @fmt: ptr to v4l2 format structure
980 */
vpif_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * fmt)981 static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
982 struct v4l2_format *fmt)
983 {
984 struct video_device *vdev = video_devdata(file);
985 struct channel_obj *ch = video_get_drvdata(vdev);
986 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
987 struct v4l2_pix_format *pix_fmt = &fmt->fmt.pix;
988 struct v4l2_subdev_format format = {
989 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
990 };
991 struct v4l2_mbus_framefmt *mbus_fmt = &format.format;
992 int ret;
993
994 /* Check the validity of the buffer type */
995 if (common->fmt.type != fmt->type)
996 return -EINVAL;
997
998 /* By default, use currently set fmt */
999 *fmt = common->fmt;
1000
1001 /* If subdev has get_fmt, use that to override */
1002 ret = v4l2_subdev_call(ch->sd, pad, get_fmt, NULL, &format);
1003 if (!ret && mbus_fmt->code) {
1004 v4l2_fill_pix_format(pix_fmt, mbus_fmt);
1005 pix_fmt->bytesperline = pix_fmt->width;
1006 if (mbus_fmt->code == MEDIA_BUS_FMT_SGRBG10_1X10) {
1007 /* e.g. mt9v032 */
1008 pix_fmt->pixelformat = V4L2_PIX_FMT_SGRBG10;
1009 pix_fmt->bytesperline = pix_fmt->width * 2;
1010 } else if (mbus_fmt->code == MEDIA_BUS_FMT_UYVY8_2X8) {
1011 /* e.g. tvp514x */
1012 pix_fmt->pixelformat = V4L2_PIX_FMT_NV16;
1013 pix_fmt->bytesperline = pix_fmt->width * 2;
1014 } else {
1015 dev_warn(vpif_dev, "%s: Unhandled media-bus format 0x%x\n",
1016 __func__, mbus_fmt->code);
1017 }
1018 pix_fmt->sizeimage = pix_fmt->bytesperline * pix_fmt->height;
1019 dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d, pixelformat=0x%08x, code=0x%x, field=%d, size=%d\n", __func__,
1020 pix_fmt->width, pix_fmt->height,
1021 pix_fmt->bytesperline, pix_fmt->pixelformat,
1022 mbus_fmt->code, pix_fmt->field, pix_fmt->sizeimage);
1023
1024 common->fmt = *fmt;
1025 vpif_update_std_info(ch);
1026 }
1027
1028 return 0;
1029 }
1030
1031 /**
1032 * vpif_s_fmt_vid_cap() - Set FMT handler
1033 * @file: file ptr
1034 * @priv: file handle
1035 * @fmt: ptr to v4l2 format structure
1036 */
vpif_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * fmt)1037 static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
1038 struct v4l2_format *fmt)
1039 {
1040 struct video_device *vdev = video_devdata(file);
1041 struct channel_obj *ch = video_get_drvdata(vdev);
1042 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1043 int ret;
1044
1045 vpif_dbg(2, debug, "%s\n", __func__);
1046
1047 if (vb2_is_busy(&common->buffer_queue))
1048 return -EBUSY;
1049
1050 ret = vpif_try_fmt_vid_cap(file, priv, fmt);
1051 if (ret)
1052 return ret;
1053
1054 /* store the format in the channel object */
1055 common->fmt = *fmt;
1056 return 0;
1057 }
1058
1059 /**
1060 * vpif_querycap() - QUERYCAP handler
1061 * @file: file ptr
1062 * @priv: file handle
1063 * @cap: ptr to v4l2_capability structure
1064 */
vpif_querycap(struct file * file,void * priv,struct v4l2_capability * cap)1065 static int vpif_querycap(struct file *file, void *priv,
1066 struct v4l2_capability *cap)
1067 {
1068 struct vpif_capture_config *config = vpif_dev->platform_data;
1069
1070 strscpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
1071 strscpy(cap->card, config->card_name, sizeof(cap->card));
1072
1073 return 0;
1074 }
1075
1076 /**
1077 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1078 * @file: file ptr
1079 * @priv: file handle
1080 * @timings: input timings
1081 */
1082 static int
vpif_enum_dv_timings(struct file * file,void * priv,struct v4l2_enum_dv_timings * timings)1083 vpif_enum_dv_timings(struct file *file, void *priv,
1084 struct v4l2_enum_dv_timings *timings)
1085 {
1086 struct vpif_capture_config *config = vpif_dev->platform_data;
1087 struct video_device *vdev = video_devdata(file);
1088 struct channel_obj *ch = video_get_drvdata(vdev);
1089 struct vpif_capture_chan_config *chan_cfg;
1090 struct v4l2_input input;
1091 int ret;
1092
1093 if (!config->chan_config[ch->channel_id].inputs)
1094 return -ENODATA;
1095
1096 chan_cfg = &config->chan_config[ch->channel_id];
1097 input = chan_cfg->inputs[ch->input_idx].input;
1098 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1099 return -ENODATA;
1100
1101 timings->pad = 0;
1102
1103 ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
1104 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1105 return -EINVAL;
1106
1107 return ret;
1108 }
1109
1110 /**
1111 * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1112 * @file: file ptr
1113 * @priv: file handle
1114 * @timings: input timings
1115 */
1116 static int
vpif_query_dv_timings(struct file * file,void * priv,struct v4l2_dv_timings * timings)1117 vpif_query_dv_timings(struct file *file, void *priv,
1118 struct v4l2_dv_timings *timings)
1119 {
1120 struct vpif_capture_config *config = vpif_dev->platform_data;
1121 struct video_device *vdev = video_devdata(file);
1122 struct channel_obj *ch = video_get_drvdata(vdev);
1123 struct vpif_capture_chan_config *chan_cfg;
1124 struct v4l2_input input;
1125 int ret;
1126
1127 if (!config->chan_config[ch->channel_id].inputs)
1128 return -ENODATA;
1129
1130 chan_cfg = &config->chan_config[ch->channel_id];
1131 input = chan_cfg->inputs[ch->input_idx].input;
1132 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1133 return -ENODATA;
1134
1135 ret = v4l2_subdev_call(ch->sd, pad, query_dv_timings, 0, timings);
1136 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1137 return -ENODATA;
1138
1139 return ret;
1140 }
1141
1142 /**
1143 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1144 * @file: file ptr
1145 * @priv: file handle
1146 * @timings: digital video timings
1147 */
vpif_s_dv_timings(struct file * file,void * priv,struct v4l2_dv_timings * timings)1148 static int vpif_s_dv_timings(struct file *file, void *priv,
1149 struct v4l2_dv_timings *timings)
1150 {
1151 struct vpif_capture_config *config = vpif_dev->platform_data;
1152 struct video_device *vdev = video_devdata(file);
1153 struct channel_obj *ch = video_get_drvdata(vdev);
1154 struct vpif_params *vpifparams = &ch->vpifparams;
1155 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1156 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1157 struct video_obj *vid_ch = &ch->video;
1158 struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1159 struct vpif_capture_chan_config *chan_cfg;
1160 struct v4l2_input input;
1161 int ret;
1162
1163 if (!config->chan_config[ch->channel_id].inputs)
1164 return -ENODATA;
1165
1166 chan_cfg = &config->chan_config[ch->channel_id];
1167 input = chan_cfg->inputs[ch->input_idx].input;
1168 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1169 return -ENODATA;
1170
1171 if (timings->type != V4L2_DV_BT_656_1120) {
1172 vpif_dbg(2, debug, "Timing type not defined\n");
1173 return -EINVAL;
1174 }
1175
1176 if (vb2_is_busy(&common->buffer_queue))
1177 return -EBUSY;
1178
1179 /* Configure subdevice timings, if any */
1180 ret = v4l2_subdev_call(ch->sd, pad, s_dv_timings, 0, timings);
1181 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1182 ret = 0;
1183 if (ret < 0) {
1184 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1185 return ret;
1186 }
1187
1188 if (!(timings->bt.width && timings->bt.height &&
1189 (timings->bt.hbackporch ||
1190 timings->bt.hfrontporch ||
1191 timings->bt.hsync) &&
1192 timings->bt.vfrontporch &&
1193 (timings->bt.vbackporch ||
1194 timings->bt.vsync))) {
1195 vpif_dbg(2, debug, "Timings for width, height, horizontal back porch, horizontal sync, horizontal front porch, vertical back porch, vertical sync and vertical back porch must be defined\n");
1196 return -EINVAL;
1197 }
1198
1199 vid_ch->dv_timings = *timings;
1200
1201 /* Configure video port timings */
1202
1203 std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
1204 std_info->sav2eav = bt->width;
1205
1206 std_info->l1 = 1;
1207 std_info->l3 = bt->vsync + bt->vbackporch + 1;
1208
1209 std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
1210 if (bt->interlaced) {
1211 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1212 std_info->l5 = std_info->vsize/2 -
1213 (bt->vfrontporch - 1);
1214 std_info->l7 = std_info->vsize/2 + 1;
1215 std_info->l9 = std_info->l7 + bt->il_vsync +
1216 bt->il_vbackporch + 1;
1217 std_info->l11 = std_info->vsize -
1218 (bt->il_vfrontporch - 1);
1219 } else {
1220 vpif_dbg(2, debug, "Required timing values for interlaced BT format missing\n");
1221 return -EINVAL;
1222 }
1223 } else {
1224 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1225 }
1226 strscpy(std_info->name, "Custom timings BT656/1120",
1227 sizeof(std_info->name));
1228 std_info->width = bt->width;
1229 std_info->height = bt->height;
1230 std_info->frm_fmt = bt->interlaced ? 0 : 1;
1231 std_info->ycmux_mode = 0;
1232 std_info->capture_format = 0;
1233 std_info->vbi_supported = 0;
1234 std_info->hd_sd = 1;
1235 std_info->stdid = 0;
1236
1237 vid_ch->stdid = 0;
1238 return 0;
1239 }
1240
1241 /**
1242 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1243 * @file: file ptr
1244 * @priv: file handle
1245 * @timings: digital video timings
1246 */
vpif_g_dv_timings(struct file * file,void * priv,struct v4l2_dv_timings * timings)1247 static int vpif_g_dv_timings(struct file *file, void *priv,
1248 struct v4l2_dv_timings *timings)
1249 {
1250 struct vpif_capture_config *config = vpif_dev->platform_data;
1251 struct video_device *vdev = video_devdata(file);
1252 struct channel_obj *ch = video_get_drvdata(vdev);
1253 struct video_obj *vid_ch = &ch->video;
1254 struct vpif_capture_chan_config *chan_cfg;
1255 struct v4l2_input input;
1256
1257 if (!config->chan_config[ch->channel_id].inputs)
1258 return -ENODATA;
1259
1260 chan_cfg = &config->chan_config[ch->channel_id];
1261 input = chan_cfg->inputs[ch->input_idx].input;
1262 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1263 return -ENODATA;
1264
1265 *timings = vid_ch->dv_timings;
1266
1267 return 0;
1268 }
1269
1270 /*
1271 * vpif_log_status() - Status information
1272 * @file: file ptr
1273 * @priv: file handle
1274 *
1275 * Returns zero.
1276 */
vpif_log_status(struct file * filep,void * priv)1277 static int vpif_log_status(struct file *filep, void *priv)
1278 {
1279 /* status for sub devices */
1280 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1281
1282 return 0;
1283 }
1284
1285 /* vpif capture ioctl operations */
1286 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1287 .vidioc_querycap = vpif_querycap,
1288 .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap,
1289 .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap,
1290 .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap,
1291 .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap,
1292
1293 .vidioc_enum_input = vpif_enum_input,
1294 .vidioc_s_input = vpif_s_input,
1295 .vidioc_g_input = vpif_g_input,
1296
1297 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1298 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1299 .vidioc_querybuf = vb2_ioctl_querybuf,
1300 .vidioc_qbuf = vb2_ioctl_qbuf,
1301 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1302 .vidioc_expbuf = vb2_ioctl_expbuf,
1303 .vidioc_streamon = vb2_ioctl_streamon,
1304 .vidioc_streamoff = vb2_ioctl_streamoff,
1305
1306 .vidioc_querystd = vpif_querystd,
1307 .vidioc_s_std = vpif_s_std,
1308 .vidioc_g_std = vpif_g_std,
1309
1310 .vidioc_enum_dv_timings = vpif_enum_dv_timings,
1311 .vidioc_query_dv_timings = vpif_query_dv_timings,
1312 .vidioc_s_dv_timings = vpif_s_dv_timings,
1313 .vidioc_g_dv_timings = vpif_g_dv_timings,
1314
1315 .vidioc_log_status = vpif_log_status,
1316 };
1317
1318 /* vpif file operations */
1319 static const struct v4l2_file_operations vpif_fops = {
1320 .owner = THIS_MODULE,
1321 .open = v4l2_fh_open,
1322 .release = vb2_fop_release,
1323 .unlocked_ioctl = video_ioctl2,
1324 .mmap = vb2_fop_mmap,
1325 .poll = vb2_fop_poll
1326 };
1327
1328 /**
1329 * initialize_vpif() - Initialize vpif data structures
1330 *
1331 * Allocate memory for data structures and initialize them
1332 */
initialize_vpif(void)1333 static int initialize_vpif(void)
1334 {
1335 int err, i, j;
1336 int free_channel_objects_index;
1337
1338 /* Allocate memory for six channel objects */
1339 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1340 vpif_obj.dev[i] =
1341 kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
1342 /* If memory allocation fails, return error */
1343 if (!vpif_obj.dev[i]) {
1344 free_channel_objects_index = i;
1345 err = -ENOMEM;
1346 goto vpif_init_free_channel_objects;
1347 }
1348 }
1349 return 0;
1350
1351 vpif_init_free_channel_objects:
1352 for (j = 0; j < free_channel_objects_index; j++)
1353 kfree(vpif_obj.dev[j]);
1354 return err;
1355 }
1356
free_vpif_objs(void)1357 static inline void free_vpif_objs(void)
1358 {
1359 int i;
1360
1361 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++)
1362 kfree(vpif_obj.dev[i]);
1363 }
1364
vpif_async_bound(struct v4l2_async_notifier * notifier,struct v4l2_subdev * subdev,struct v4l2_async_connection * asd)1365 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1366 struct v4l2_subdev *subdev,
1367 struct v4l2_async_connection *asd)
1368 {
1369 int i;
1370
1371 for (i = 0; i < vpif_obj.config->asd_sizes[0]; i++) {
1372 struct v4l2_async_connection *_asd = vpif_obj.config->asd[i];
1373 const struct fwnode_handle *fwnode = _asd->match.fwnode;
1374
1375 if (fwnode == subdev->fwnode) {
1376 vpif_obj.sd[i] = subdev;
1377 vpif_obj.config->chan_config->inputs[i].subdev_name =
1378 (char *)to_of_node(subdev->fwnode)->full_name;
1379 vpif_dbg(2, debug,
1380 "%s: setting input %d subdev_name = %s\n",
1381 __func__, i,
1382 vpif_obj.config->chan_config->inputs[i].subdev_name);
1383 return 0;
1384 }
1385 }
1386
1387 for (i = 0; i < vpif_obj.config->subdev_count; i++)
1388 if (!strcmp(vpif_obj.config->subdev_info[i].name,
1389 subdev->name)) {
1390 vpif_obj.sd[i] = subdev;
1391 return 0;
1392 }
1393
1394 return -EINVAL;
1395 }
1396
vpif_probe_complete(void)1397 static int vpif_probe_complete(void)
1398 {
1399 struct common_obj *common;
1400 struct video_device *vdev;
1401 struct channel_obj *ch;
1402 struct vb2_queue *q;
1403 int j, err, k;
1404
1405 for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
1406 ch = vpif_obj.dev[j];
1407 ch->channel_id = j;
1408 common = &(ch->common[VPIF_VIDEO_INDEX]);
1409 spin_lock_init(&common->irqlock);
1410 mutex_init(&common->lock);
1411
1412 /* select input 0 */
1413 err = vpif_set_input(vpif_obj.config, ch, 0);
1414 if (err)
1415 goto probe_out;
1416
1417 /* set initial format */
1418 ch->video.stdid = V4L2_STD_525_60;
1419 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1420 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1421 vpif_update_std_info(ch);
1422
1423 /* Initialize vb2 queue */
1424 q = &common->buffer_queue;
1425 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1426 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1427 q->drv_priv = ch;
1428 q->ops = &video_qops;
1429 q->mem_ops = &vb2_dma_contig_memops;
1430 q->buf_struct_size = sizeof(struct vpif_cap_buffer);
1431 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1432 q->min_queued_buffers = 1;
1433 q->lock = &common->lock;
1434 q->dev = vpif_dev;
1435
1436 err = vb2_queue_init(q);
1437 if (err) {
1438 vpif_err("vpif_capture: vb2_queue_init() failed\n");
1439 goto probe_out;
1440 }
1441
1442 INIT_LIST_HEAD(&common->dma_queue);
1443
1444 /* Initialize the video_device structure */
1445 vdev = &ch->video_dev;
1446 strscpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1447 vdev->release = video_device_release_empty;
1448 vdev->fops = &vpif_fops;
1449 vdev->ioctl_ops = &vpif_ioctl_ops;
1450 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1451 vdev->vfl_dir = VFL_DIR_RX;
1452 vdev->queue = q;
1453 vdev->lock = &common->lock;
1454 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1455 video_set_drvdata(&ch->video_dev, ch);
1456 err = video_register_device(vdev,
1457 VFL_TYPE_VIDEO, (j ? 1 : 0));
1458 if (err)
1459 goto probe_out;
1460 }
1461
1462 v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
1463 return 0;
1464
1465 probe_out:
1466 for (k = 0; k < j; k++) {
1467 /* Get the pointer to the channel object */
1468 ch = vpif_obj.dev[k];
1469 /* Unregister video device */
1470 video_unregister_device(&ch->video_dev);
1471 }
1472
1473 return err;
1474 }
1475
vpif_async_complete(struct v4l2_async_notifier * notifier)1476 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1477 {
1478 return vpif_probe_complete();
1479 }
1480
1481 static const struct v4l2_async_notifier_operations vpif_async_ops = {
1482 .bound = vpif_async_bound,
1483 .complete = vpif_async_complete,
1484 };
1485
1486 static struct vpif_capture_config *
vpif_capture_get_pdata(struct platform_device * pdev,struct v4l2_device * v4l2_dev)1487 vpif_capture_get_pdata(struct platform_device *pdev,
1488 struct v4l2_device *v4l2_dev)
1489 {
1490 struct device_node *endpoint;
1491 struct device_node *rem = NULL;
1492 struct vpif_capture_config *pdata;
1493 struct vpif_subdev_info *sdinfo;
1494 struct vpif_capture_chan_config *chan;
1495 unsigned int i;
1496
1497 v4l2_async_nf_init(&vpif_obj.notifier, v4l2_dev);
1498
1499 /*
1500 * DT boot: OF node from parent device contains
1501 * video ports & endpoints data.
1502 */
1503 if (pdev->dev.parent && pdev->dev.parent->of_node)
1504 pdev->dev.of_node = pdev->dev.parent->of_node;
1505 if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
1506 return pdev->dev.platform_data;
1507
1508 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1509 if (!pdata)
1510 return NULL;
1511 pdata->subdev_info =
1512 devm_kcalloc(&pdev->dev,
1513 VPIF_CAPTURE_NUM_CHANNELS,
1514 sizeof(*pdata->subdev_info),
1515 GFP_KERNEL);
1516
1517 if (!pdata->subdev_info)
1518 return NULL;
1519
1520 i = 0;
1521 for_each_endpoint_of_node(pdev->dev.of_node, endpoint) {
1522 struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
1523 unsigned int flags;
1524 int err;
1525
1526 rem = of_graph_get_remote_port_parent(endpoint);
1527 if (!rem) {
1528 dev_dbg(&pdev->dev, "Remote device at %pOF not found\n",
1529 endpoint);
1530 goto done;
1531 }
1532
1533 sdinfo = &pdata->subdev_info[i];
1534 chan = &pdata->chan_config[i];
1535 chan->inputs = devm_kcalloc(&pdev->dev,
1536 VPIF_CAPTURE_NUM_CHANNELS,
1537 sizeof(*chan->inputs),
1538 GFP_KERNEL);
1539 if (!chan->inputs)
1540 goto err_cleanup;
1541
1542 chan->input_count++;
1543 chan->inputs[i].input.type = V4L2_INPUT_TYPE_CAMERA;
1544 chan->inputs[i].input.std = V4L2_STD_ALL;
1545 chan->inputs[i].input.capabilities = V4L2_IN_CAP_STD;
1546
1547 err = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
1548 &bus_cfg);
1549 if (err) {
1550 dev_err(&pdev->dev, "Could not parse the endpoint\n");
1551 of_node_put(rem);
1552 goto done;
1553 }
1554
1555 dev_dbg(&pdev->dev, "Endpoint %pOF, bus_width = %d\n",
1556 endpoint, bus_cfg.bus.parallel.bus_width);
1557
1558 flags = bus_cfg.bus.parallel.flags;
1559
1560 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
1561 chan->vpif_if.hd_pol = 1;
1562
1563 if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
1564 chan->vpif_if.vd_pol = 1;
1565
1566 dev_dbg(&pdev->dev, "Remote device %pOF found\n", rem);
1567 sdinfo->name = rem->full_name;
1568
1569 pdata->asd[i] = v4l2_async_nf_add_fwnode(&vpif_obj.notifier,
1570 of_fwnode_handle(rem),
1571 struct v4l2_async_connection);
1572 if (IS_ERR(pdata->asd[i]))
1573 goto err_cleanup;
1574
1575 of_node_put(rem);
1576
1577 i++;
1578 if (i >= VPIF_CAPTURE_NUM_CHANNELS)
1579 break;
1580 }
1581
1582 done:
1583 of_node_put(endpoint);
1584 pdata->asd_sizes[0] = i;
1585 pdata->subdev_count = i;
1586 pdata->card_name = "DA850/OMAP-L138 Video Capture";
1587
1588 return pdata;
1589
1590 err_cleanup:
1591 of_node_put(rem);
1592 of_node_put(endpoint);
1593 v4l2_async_nf_cleanup(&vpif_obj.notifier);
1594
1595 return NULL;
1596 }
1597
1598 /**
1599 * vpif_probe : This function probes the vpif capture driver
1600 * @pdev: platform device pointer
1601 *
1602 * This creates device entries by register itself to the V4L2 driver and
1603 * initializes fields of each channel objects
1604 */
vpif_probe(struct platform_device * pdev)1605 static __init int vpif_probe(struct platform_device *pdev)
1606 {
1607 struct vpif_subdev_info *subdevdata;
1608 struct i2c_adapter *i2c_adap;
1609 int subdev_count;
1610 int res_idx = 0;
1611 int i, err;
1612
1613 vpif_dev = &pdev->dev;
1614
1615 err = initialize_vpif();
1616 if (err) {
1617 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1618 return err;
1619 }
1620
1621 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1622 if (err) {
1623 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1624 goto vpif_free;
1625 }
1626
1627 do {
1628 int irq;
1629
1630 err = platform_get_irq_optional(pdev, res_idx);
1631 if (err < 0 && err != -ENXIO)
1632 goto vpif_unregister;
1633 if (err > 0)
1634 irq = err;
1635 else
1636 break;
1637
1638 err = devm_request_irq(&pdev->dev, irq, vpif_channel_isr,
1639 IRQF_SHARED, VPIF_DRIVER_NAME,
1640 (void *)(&vpif_obj.dev[res_idx]->channel_id));
1641 if (err)
1642 goto vpif_unregister;
1643 } while (++res_idx);
1644
1645 pdev->dev.platform_data =
1646 vpif_capture_get_pdata(pdev, &vpif_obj.v4l2_dev);
1647 if (!pdev->dev.platform_data) {
1648 err = -EINVAL;
1649 dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
1650 goto vpif_unregister;
1651 }
1652
1653 vpif_obj.config = pdev->dev.platform_data;
1654
1655 subdev_count = vpif_obj.config->subdev_count;
1656 vpif_obj.sd = kcalloc(subdev_count, sizeof(*vpif_obj.sd), GFP_KERNEL);
1657 if (!vpif_obj.sd) {
1658 err = -ENOMEM;
1659 goto probe_subdev_out;
1660 }
1661
1662 if (!vpif_obj.config->asd_sizes[0]) {
1663 int i2c_id = vpif_obj.config->i2c_adapter_id;
1664
1665 i2c_adap = i2c_get_adapter(i2c_id);
1666 WARN_ON(!i2c_adap);
1667 for (i = 0; i < subdev_count; i++) {
1668 subdevdata = &vpif_obj.config->subdev_info[i];
1669 vpif_obj.sd[i] =
1670 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1671 i2c_adap,
1672 &subdevdata->
1673 board_info,
1674 NULL);
1675
1676 if (!vpif_obj.sd[i]) {
1677 vpif_err("Error registering v4l2 subdevice\n");
1678 err = -ENODEV;
1679 goto probe_subdev_out;
1680 }
1681 v4l2_info(&vpif_obj.v4l2_dev,
1682 "registered sub device %s\n",
1683 subdevdata->name);
1684 }
1685 err = vpif_probe_complete();
1686 if (err)
1687 goto probe_subdev_out;
1688 } else {
1689 vpif_obj.notifier.ops = &vpif_async_ops;
1690 err = v4l2_async_nf_register(&vpif_obj.notifier);
1691 if (err) {
1692 vpif_err("Error registering async notifier\n");
1693 err = -EINVAL;
1694 goto probe_subdev_out;
1695 }
1696 }
1697
1698 return 0;
1699
1700 probe_subdev_out:
1701 v4l2_async_nf_cleanup(&vpif_obj.notifier);
1702 /* free sub devices memory */
1703 kfree(vpif_obj.sd);
1704 vpif_unregister:
1705 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1706 vpif_free:
1707 free_vpif_objs();
1708
1709 return err;
1710 }
1711
1712 /**
1713 * vpif_remove() - driver remove handler
1714 * @device: ptr to platform device structure
1715 *
1716 * The vidoe device is unregistered
1717 */
vpif_remove(struct platform_device * device)1718 static void vpif_remove(struct platform_device *device)
1719 {
1720 struct channel_obj *ch;
1721 int i;
1722
1723 v4l2_async_nf_unregister(&vpif_obj.notifier);
1724 v4l2_async_nf_cleanup(&vpif_obj.notifier);
1725 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1726
1727 kfree(vpif_obj.sd);
1728 /* un-register device */
1729 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1730 /* Get the pointer to the channel object */
1731 ch = vpif_obj.dev[i];
1732 /* Unregister video device */
1733 video_unregister_device(&ch->video_dev);
1734 kfree(vpif_obj.dev[i]);
1735 }
1736 }
1737
1738 #ifdef CONFIG_PM_SLEEP
1739 /**
1740 * vpif_suspend: vpif device suspend
1741 * @dev: pointer to &struct device
1742 */
vpif_suspend(struct device * dev)1743 static int vpif_suspend(struct device *dev)
1744 {
1745
1746 struct common_obj *common;
1747 struct channel_obj *ch;
1748 int i;
1749
1750 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1751 /* Get the pointer to the channel object */
1752 ch = vpif_obj.dev[i];
1753 common = &ch->common[VPIF_VIDEO_INDEX];
1754
1755 if (!vb2_start_streaming_called(&common->buffer_queue))
1756 continue;
1757
1758 mutex_lock(&common->lock);
1759 /* Disable channel */
1760 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1761 enable_channel0(0);
1762 channel0_intr_enable(0);
1763 }
1764 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1765 ycmux_mode == 2) {
1766 enable_channel1(0);
1767 channel1_intr_enable(0);
1768 }
1769 mutex_unlock(&common->lock);
1770 }
1771
1772 return 0;
1773 }
1774
1775 /*
1776 * vpif_resume: vpif device suspend
1777 */
vpif_resume(struct device * dev)1778 static int vpif_resume(struct device *dev)
1779 {
1780 struct common_obj *common;
1781 struct channel_obj *ch;
1782 int i;
1783
1784 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1785 /* Get the pointer to the channel object */
1786 ch = vpif_obj.dev[i];
1787 common = &ch->common[VPIF_VIDEO_INDEX];
1788
1789 if (!vb2_start_streaming_called(&common->buffer_queue))
1790 continue;
1791
1792 mutex_lock(&common->lock);
1793 /* Enable channel */
1794 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1795 enable_channel0(1);
1796 channel0_intr_enable(1);
1797 }
1798 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1799 ycmux_mode == 2) {
1800 enable_channel1(1);
1801 channel1_intr_enable(1);
1802 }
1803 mutex_unlock(&common->lock);
1804 }
1805
1806 return 0;
1807 }
1808 #endif
1809
1810 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1811
1812 static __refdata struct platform_driver vpif_driver = {
1813 .driver = {
1814 .name = VPIF_DRIVER_NAME,
1815 .pm = &vpif_pm_ops,
1816 },
1817 .probe = vpif_probe,
1818 .remove_new = vpif_remove,
1819 };
1820
1821 module_platform_driver(vpif_driver);
1822