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