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5bb085b19bcbdad375ed9bbb52ab13851580127c
[deliverable/linux.git] / drivers / media / platform / davinci / vpif_display.c
1 /*
2 * vpif-display - VPIF display driver
3 * Display driver for TI DaVinci VPIF
4 *
5 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
6 * Copyright (C) 2014 Lad, Prabhakar <prabhakar.csengg@gmail.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation version 2.
11 *
12 * This program is distributed .as is. WITHOUT ANY WARRANTY of any
13 * kind, whether express or implied; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 */
17
18 #include <linux/interrupt.h>
19 #include <linux/module.h>
20 #include <linux/platform_device.h>
21 #include <linux/slab.h>
22
23 #include <media/v4l2-ioctl.h>
24
25 #include "vpif.h"
26 #include "vpif_display.h"
27
28 MODULE_DESCRIPTION("TI DaVinci VPIF Display driver");
29 MODULE_LICENSE("GPL");
30 MODULE_VERSION(VPIF_DISPLAY_VERSION);
31
32 #define VPIF_V4L2_STD (V4L2_STD_525_60 | V4L2_STD_625_50)
33
34 #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
35 #define vpif_dbg(level, debug, fmt, arg...) \
36 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
37
38 static int debug = 1;
39
40 module_param(debug, int, 0644);
41
42 MODULE_PARM_DESC(debug, "Debug level 0-1");
43
44 #define VPIF_DRIVER_NAME "vpif_display"
45
46 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
47 static int ycmux_mode;
48
49 static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} };
50
51 static struct vpif_device vpif_obj = { {NULL} };
52 static struct device *vpif_dev;
53 static void vpif_calculate_offsets(struct channel_obj *ch);
54 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
55
56 static inline struct vpif_disp_buffer *to_vpif_buffer(struct vb2_buffer *vb)
57 {
58 return container_of(vb, struct vpif_disp_buffer, vb);
59 }
60
61 /**
62 * vpif_buffer_prepare : callback function for buffer prepare
63 * @vb: ptr to vb2_buffer
64 *
65 * This is the callback function for buffer prepare when vb2_qbuf()
66 * function is called. The buffer is prepared and user space virtual address
67 * or user address is converted into physical address
68 */
69 static int vpif_buffer_prepare(struct vb2_buffer *vb)
70 {
71 struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
72 struct common_obj *common;
73
74 common = &ch->common[VPIF_VIDEO_INDEX];
75
76 vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
77 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
78 return -EINVAL;
79
80 vb->v4l2_buf.field = common->fmt.fmt.pix.field;
81
82 if (vb->vb2_queue->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) {
83 unsigned long addr = vb2_dma_contig_plane_dma_addr(vb, 0);
84
85 if (!ISALIGNED(addr + common->ytop_off) ||
86 !ISALIGNED(addr + common->ybtm_off) ||
87 !ISALIGNED(addr + common->ctop_off) ||
88 !ISALIGNED(addr + common->cbtm_off)) {
89 vpif_err("buffer offset not aligned to 8 bytes\n");
90 return -EINVAL;
91 }
92 }
93
94 return 0;
95 }
96
97 /**
98 * vpif_buffer_queue_setup : Callback function for buffer setup.
99 * @vq: vb2_queue ptr
100 * @fmt: v4l2 format
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_ctxs: 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 */
109 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
110 const struct v4l2_format *fmt,
111 unsigned int *nbuffers, unsigned int *nplanes,
112 unsigned int sizes[], void *alloc_ctxs[])
113 {
114 struct channel_obj *ch = vb2_get_drv_priv(vq);
115 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
116
117 if (fmt && fmt->fmt.pix.sizeimage < common->fmt.fmt.pix.sizeimage)
118 return -EINVAL;
119
120 if (vq->num_buffers + *nbuffers < 3)
121 *nbuffers = 3 - vq->num_buffers;
122
123 *nplanes = 1;
124 sizes[0] = fmt ? fmt->fmt.pix.sizeimage : common->fmt.fmt.pix.sizeimage;
125 alloc_ctxs[0] = common->alloc_ctx;
126
127 /* Calculate the offset for Y and C data in the buffer */
128 vpif_calculate_offsets(ch);
129
130 return 0;
131 }
132
133 /**
134 * vpif_buffer_queue : Callback function to add buffer to DMA queue
135 * @vb: ptr to vb2_buffer
136 *
137 * This callback fucntion queues the buffer to DMA engine
138 */
139 static void vpif_buffer_queue(struct vb2_buffer *vb)
140 {
141 struct vpif_disp_buffer *buf = to_vpif_buffer(vb);
142 struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
143 struct common_obj *common;
144 unsigned long flags;
145
146 common = &ch->common[VPIF_VIDEO_INDEX];
147
148 /* add the buffer to the DMA queue */
149 spin_lock_irqsave(&common->irqlock, flags);
150 list_add_tail(&buf->list, &common->dma_queue);
151 spin_unlock_irqrestore(&common->irqlock, flags);
152 }
153
154 /**
155 * vpif_start_streaming : Starts the DMA engine for streaming
156 * @vb: ptr to vb2_buffer
157 * @count: number of buffers
158 */
159 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
160 {
161 struct vpif_display_config *vpif_config_data =
162 vpif_dev->platform_data;
163 struct channel_obj *ch = vb2_get_drv_priv(vq);
164 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
165 struct vpif_params *vpif = &ch->vpifparams;
166 struct vpif_disp_buffer *buf, *tmp;
167 unsigned long addr, flags;
168 int ret;
169
170 spin_lock_irqsave(&common->irqlock, flags);
171
172 /* Initialize field_id */
173 ch->field_id = 0;
174
175 /* clock settings */
176 if (vpif_config_data->set_clock) {
177 ret = vpif_config_data->set_clock(ch->vpifparams.std_info.
178 ycmux_mode, ch->vpifparams.std_info.hd_sd);
179 if (ret < 0) {
180 vpif_err("can't set clock\n");
181 goto err;
182 }
183 }
184
185 /* set the parameters and addresses */
186 ret = vpif_set_video_params(vpif, ch->channel_id + 2);
187 if (ret < 0)
188 goto err;
189
190 ycmux_mode = ret;
191 vpif_config_addr(ch, ret);
192 /* Get the next frame from the buffer queue */
193 common->next_frm = common->cur_frm =
194 list_entry(common->dma_queue.next,
195 struct vpif_disp_buffer, list);
196
197 list_del(&common->cur_frm->list);
198 spin_unlock_irqrestore(&common->irqlock, flags);
199 /* Mark state of the current frame to active */
200 common->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
201
202 addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
203 common->set_addr((addr + common->ytop_off),
204 (addr + common->ybtm_off),
205 (addr + common->ctop_off),
206 (addr + common->cbtm_off));
207
208 /*
209 * Set interrupt for both the fields in VPIF
210 * Register enable channel in VPIF register
211 */
212 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
213 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
214 channel2_intr_assert();
215 channel2_intr_enable(1);
216 enable_channel2(1);
217 if (vpif_config_data->chan_config[VPIF_CHANNEL2_VIDEO].clip_en)
218 channel2_clipping_enable(1);
219 }
220
221 if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) {
222 channel3_intr_assert();
223 channel3_intr_enable(1);
224 enable_channel3(1);
225 if (vpif_config_data->chan_config[VPIF_CHANNEL3_VIDEO].clip_en)
226 channel3_clipping_enable(1);
227 }
228
229 return 0;
230
231 err:
232 list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
233 list_del(&buf->list);
234 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
235 }
236
237 return ret;
238 }
239
240 /**
241 * vpif_stop_streaming : Stop the DMA engine
242 * @vq: ptr to vb2_queue
243 *
244 * This callback stops the DMA engine and any remaining buffers
245 * in the DMA queue are released.
246 */
247 static void vpif_stop_streaming(struct vb2_queue *vq)
248 {
249 struct channel_obj *ch = vb2_get_drv_priv(vq);
250 struct common_obj *common;
251 unsigned long flags;
252
253 common = &ch->common[VPIF_VIDEO_INDEX];
254
255 /* Disable channel */
256 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
257 enable_channel2(0);
258 channel2_intr_enable(0);
259 }
260 if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) {
261 enable_channel3(0);
262 channel3_intr_enable(0);
263 }
264
265 /* release all active buffers */
266 spin_lock_irqsave(&common->irqlock, flags);
267 if (common->cur_frm == common->next_frm) {
268 vb2_buffer_done(&common->cur_frm->vb, VB2_BUF_STATE_ERROR);
269 } else {
270 if (common->cur_frm != NULL)
271 vb2_buffer_done(&common->cur_frm->vb,
272 VB2_BUF_STATE_ERROR);
273 if (common->next_frm != NULL)
274 vb2_buffer_done(&common->next_frm->vb,
275 VB2_BUF_STATE_ERROR);
276 }
277
278 while (!list_empty(&common->dma_queue)) {
279 common->next_frm = list_entry(common->dma_queue.next,
280 struct vpif_disp_buffer, list);
281 list_del(&common->next_frm->list);
282 vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR);
283 }
284 spin_unlock_irqrestore(&common->irqlock, flags);
285 }
286
287 static struct vb2_ops video_qops = {
288 .queue_setup = vpif_buffer_queue_setup,
289 .wait_prepare = vb2_ops_wait_prepare,
290 .wait_finish = vb2_ops_wait_finish,
291 .buf_prepare = vpif_buffer_prepare,
292 .start_streaming = vpif_start_streaming,
293 .stop_streaming = vpif_stop_streaming,
294 .buf_queue = vpif_buffer_queue,
295 };
296
297 static void process_progressive_mode(struct common_obj *common)
298 {
299 unsigned long addr = 0;
300
301 spin_lock(&common->irqlock);
302 /* Get the next buffer from buffer queue */
303 common->next_frm = list_entry(common->dma_queue.next,
304 struct vpif_disp_buffer, list);
305 /* Remove that buffer from the buffer queue */
306 list_del(&common->next_frm->list);
307 spin_unlock(&common->irqlock);
308 /* Mark status of the buffer as active */
309 common->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
310
311 /* Set top and bottom field addrs in VPIF registers */
312 addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
313 common->set_addr(addr + common->ytop_off,
314 addr + common->ybtm_off,
315 addr + common->ctop_off,
316 addr + common->cbtm_off);
317 }
318
319 static void process_interlaced_mode(int fid, struct common_obj *common)
320 {
321 /* device field id and local field id are in sync */
322 /* If this is even field */
323 if (0 == fid) {
324 if (common->cur_frm == common->next_frm)
325 return;
326
327 /* one frame is displayed If next frame is
328 * available, release cur_frm and move on */
329 /* Copy frame display time */
330 v4l2_get_timestamp(&common->cur_frm->vb.v4l2_buf.timestamp);
331 /* Change status of the cur_frm */
332 vb2_buffer_done(&common->cur_frm->vb,
333 VB2_BUF_STATE_DONE);
334 /* Make cur_frm pointing to next_frm */
335 common->cur_frm = common->next_frm;
336
337 } else if (1 == fid) { /* odd field */
338 spin_lock(&common->irqlock);
339 if (list_empty(&common->dma_queue)
340 || (common->cur_frm != common->next_frm)) {
341 spin_unlock(&common->irqlock);
342 return;
343 }
344 spin_unlock(&common->irqlock);
345 /* one field is displayed configure the next
346 * frame if it is available else hold on current
347 * frame */
348 /* Get next from the buffer queue */
349 process_progressive_mode(common);
350 }
351 }
352
353 /*
354 * vpif_channel_isr: It changes status of the displayed buffer, takes next
355 * buffer from the queue and sets its address in VPIF registers
356 */
357 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
358 {
359 struct vpif_device *dev = &vpif_obj;
360 struct channel_obj *ch;
361 struct common_obj *common;
362 enum v4l2_field field;
363 int fid = -1, i;
364 int channel_id = 0;
365
366 channel_id = *(int *)(dev_id);
367 if (!vpif_intr_status(channel_id + 2))
368 return IRQ_NONE;
369
370 ch = dev->dev[channel_id];
371 field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
372 for (i = 0; i < VPIF_NUMOBJECTS; i++) {
373 common = &ch->common[i];
374 /* If streaming is started in this channel */
375
376 if (1 == ch->vpifparams.std_info.frm_fmt) {
377 spin_lock(&common->irqlock);
378 if (list_empty(&common->dma_queue)) {
379 spin_unlock(&common->irqlock);
380 continue;
381 }
382 spin_unlock(&common->irqlock);
383
384 /* Progressive mode */
385 if (!channel_first_int[i][channel_id]) {
386 /* Mark status of the cur_frm to
387 * done and unlock semaphore on it */
388 v4l2_get_timestamp(&common->cur_frm->vb.
389 v4l2_buf.timestamp);
390 vb2_buffer_done(&common->cur_frm->vb,
391 VB2_BUF_STATE_DONE);
392 /* Make cur_frm pointing to next_frm */
393 common->cur_frm = common->next_frm;
394 }
395
396 channel_first_int[i][channel_id] = 0;
397 process_progressive_mode(common);
398 } else {
399 /* Interlaced mode */
400 /* If it is first interrupt, ignore it */
401
402 if (channel_first_int[i][channel_id]) {
403 channel_first_int[i][channel_id] = 0;
404 continue;
405 }
406
407 if (0 == i) {
408 ch->field_id ^= 1;
409 /* Get field id from VPIF registers */
410 fid = vpif_channel_getfid(ch->channel_id + 2);
411 /* If fid does not match with stored field id */
412 if (fid != ch->field_id) {
413 /* Make them in sync */
414 if (0 == fid)
415 ch->field_id = fid;
416
417 return IRQ_HANDLED;
418 }
419 }
420 process_interlaced_mode(fid, common);
421 }
422 }
423
424 return IRQ_HANDLED;
425 }
426
427 static int vpif_update_std_info(struct channel_obj *ch)
428 {
429 struct video_obj *vid_ch = &ch->video;
430 struct vpif_params *vpifparams = &ch->vpifparams;
431 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
432 const struct vpif_channel_config_params *config;
433
434 int i;
435
436 for (i = 0; i < vpif_ch_params_count; i++) {
437 config = &vpif_ch_params[i];
438 if (config->hd_sd == 0) {
439 vpif_dbg(2, debug, "SD format\n");
440 if (config->stdid & vid_ch->stdid) {
441 memcpy(std_info, config, sizeof(*config));
442 break;
443 }
444 }
445 }
446
447 if (i == vpif_ch_params_count) {
448 vpif_dbg(1, debug, "Format not found\n");
449 return -EINVAL;
450 }
451
452 return 0;
453 }
454
455 static int vpif_update_resolution(struct channel_obj *ch)
456 {
457 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
458 struct video_obj *vid_ch = &ch->video;
459 struct vpif_params *vpifparams = &ch->vpifparams;
460 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
461
462 if (!vid_ch->stdid && !vid_ch->dv_timings.bt.height)
463 return -EINVAL;
464
465 if (vid_ch->stdid) {
466 if (vpif_update_std_info(ch))
467 return -EINVAL;
468 }
469
470 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
471 common->fmt.fmt.pix.width = std_info->width;
472 common->fmt.fmt.pix.height = std_info->height;
473 vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n",
474 common->fmt.fmt.pix.width, common->fmt.fmt.pix.height);
475
476 /* Set height and width paramateres */
477 common->height = std_info->height;
478 common->width = std_info->width;
479 common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
480
481 if (vid_ch->stdid)
482 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
483 else
484 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
485
486 if (ch->vpifparams.std_info.frm_fmt)
487 common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
488 else
489 common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
490
491 return 0;
492 }
493
494 /*
495 * vpif_calculate_offsets: This function calculates buffers offset for Y and C
496 * in the top and bottom field
497 */
498 static void vpif_calculate_offsets(struct channel_obj *ch)
499 {
500 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
501 struct vpif_params *vpifparams = &ch->vpifparams;
502 enum v4l2_field field = common->fmt.fmt.pix.field;
503 struct video_obj *vid_ch = &ch->video;
504 unsigned int hpitch, vpitch, sizeimage;
505
506 if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) {
507 if (ch->vpifparams.std_info.frm_fmt)
508 vid_ch->buf_field = V4L2_FIELD_NONE;
509 else
510 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
511 } else {
512 vid_ch->buf_field = common->fmt.fmt.pix.field;
513 }
514
515 sizeimage = common->fmt.fmt.pix.sizeimage;
516
517 hpitch = common->fmt.fmt.pix.bytesperline;
518 vpitch = sizeimage / (hpitch * 2);
519 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
520 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
521 common->ytop_off = 0;
522 common->ybtm_off = hpitch;
523 common->ctop_off = sizeimage / 2;
524 common->cbtm_off = sizeimage / 2 + hpitch;
525 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
526 common->ytop_off = 0;
527 common->ybtm_off = sizeimage / 4;
528 common->ctop_off = sizeimage / 2;
529 common->cbtm_off = common->ctop_off + sizeimage / 4;
530 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
531 common->ybtm_off = 0;
532 common->ytop_off = sizeimage / 4;
533 common->cbtm_off = sizeimage / 2;
534 common->ctop_off = common->cbtm_off + sizeimage / 4;
535 }
536
537 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
538 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
539 vpifparams->video_params.storage_mode = 1;
540 } else {
541 vpifparams->video_params.storage_mode = 0;
542 }
543
544 if (ch->vpifparams.std_info.frm_fmt == 1) {
545 vpifparams->video_params.hpitch =
546 common->fmt.fmt.pix.bytesperline;
547 } else {
548 if ((field == V4L2_FIELD_ANY) ||
549 (field == V4L2_FIELD_INTERLACED))
550 vpifparams->video_params.hpitch =
551 common->fmt.fmt.pix.bytesperline * 2;
552 else
553 vpifparams->video_params.hpitch =
554 common->fmt.fmt.pix.bytesperline;
555 }
556
557 ch->vpifparams.video_params.stdid = ch->vpifparams.std_info.stdid;
558 }
559
560 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
561 {
562 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
563
564 if (VPIF_CHANNEL3_VIDEO == ch->channel_id) {
565 common->set_addr = ch3_set_videobuf_addr;
566 } else {
567 if (2 == muxmode)
568 common->set_addr = ch2_set_videobuf_addr_yc_nmux;
569 else
570 common->set_addr = ch2_set_videobuf_addr;
571 }
572 }
573
574 /* functions implementing ioctls */
575 /**
576 * vpif_querycap() - QUERYCAP handler
577 * @file: file ptr
578 * @priv: file handle
579 * @cap: ptr to v4l2_capability structure
580 */
581 static int vpif_querycap(struct file *file, void *priv,
582 struct v4l2_capability *cap)
583 {
584 struct vpif_display_config *config = vpif_dev->platform_data;
585
586 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
587 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
588 strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
589 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
590 dev_name(vpif_dev));
591 strlcpy(cap->card, config->card_name, sizeof(cap->card));
592
593 return 0;
594 }
595
596 static int vpif_enum_fmt_vid_out(struct file *file, void *priv,
597 struct v4l2_fmtdesc *fmt)
598 {
599 if (fmt->index != 0)
600 return -EINVAL;
601
602 /* Fill in the information about format */
603 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
604 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
605 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
606 fmt->flags = 0;
607 return 0;
608 }
609
610 static int vpif_g_fmt_vid_out(struct file *file, void *priv,
611 struct v4l2_format *fmt)
612 {
613 struct video_device *vdev = video_devdata(file);
614 struct channel_obj *ch = video_get_drvdata(vdev);
615 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
616
617 /* Check the validity of the buffer type */
618 if (common->fmt.type != fmt->type)
619 return -EINVAL;
620
621 if (vpif_update_resolution(ch))
622 return -EINVAL;
623 *fmt = common->fmt;
624 return 0;
625 }
626
627 static int vpif_try_fmt_vid_out(struct file *file, void *priv,
628 struct v4l2_format *fmt)
629 {
630 struct video_device *vdev = video_devdata(file);
631 struct channel_obj *ch = video_get_drvdata(vdev);
632 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
633 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
634
635 /*
636 * to supress v4l-compliance warnings silently correct
637 * the pixelformat
638 */
639 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
640 pixfmt->pixelformat = common->fmt.fmt.pix.pixelformat;
641
642 if (vpif_update_resolution(ch))
643 return -EINVAL;
644
645 pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
646 pixfmt->field = common->fmt.fmt.pix.field;
647 pixfmt->bytesperline = common->fmt.fmt.pix.width;
648 pixfmt->width = common->fmt.fmt.pix.width;
649 pixfmt->height = common->fmt.fmt.pix.height;
650 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
651 pixfmt->priv = 0;
652
653 return 0;
654 }
655
656 static int vpif_s_fmt_vid_out(struct file *file, void *priv,
657 struct v4l2_format *fmt)
658 {
659 struct video_device *vdev = video_devdata(file);
660 struct channel_obj *ch = video_get_drvdata(vdev);
661 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
662 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
663 int ret;
664
665 if (vb2_is_busy(&common->buffer_queue))
666 return -EBUSY;
667
668 ret = vpif_try_fmt_vid_out(file, priv, fmt);
669 if (ret)
670 return ret;
671
672 /* store the pix format in the channel object */
673 common->fmt.fmt.pix = *pixfmt;
674
675 /* store the format in the channel object */
676 common->fmt = *fmt;
677 return 0;
678 }
679
680 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
681 {
682 struct vpif_display_config *config = vpif_dev->platform_data;
683 struct video_device *vdev = video_devdata(file);
684 struct channel_obj *ch = video_get_drvdata(vdev);
685 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
686 struct vpif_display_chan_config *chan_cfg;
687 struct v4l2_output output;
688 int ret;
689
690 if (config->chan_config[ch->channel_id].outputs == NULL)
691 return -ENODATA;
692
693 chan_cfg = &config->chan_config[ch->channel_id];
694 output = chan_cfg->outputs[ch->output_idx].output;
695 if (output.capabilities != V4L2_OUT_CAP_STD)
696 return -ENODATA;
697
698 if (vb2_is_busy(&common->buffer_queue))
699 return -EBUSY;
700
701
702 if (!(std_id & VPIF_V4L2_STD))
703 return -EINVAL;
704
705 /* Call encoder subdevice function to set the standard */
706 ch->video.stdid = std_id;
707 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
708 /* Get the information about the standard */
709 if (vpif_update_resolution(ch))
710 return -EINVAL;
711
712 common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width;
713
714 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
715 s_std_output, std_id);
716 if (ret < 0) {
717 vpif_err("Failed to set output standard\n");
718 return ret;
719 }
720
721 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
722 s_std, std_id);
723 if (ret < 0)
724 vpif_err("Failed to set standard for sub devices\n");
725 return ret;
726 }
727
728 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
729 {
730 struct vpif_display_config *config = vpif_dev->platform_data;
731 struct video_device *vdev = video_devdata(file);
732 struct channel_obj *ch = video_get_drvdata(vdev);
733 struct vpif_display_chan_config *chan_cfg;
734 struct v4l2_output output;
735
736 if (config->chan_config[ch->channel_id].outputs == NULL)
737 return -ENODATA;
738
739 chan_cfg = &config->chan_config[ch->channel_id];
740 output = chan_cfg->outputs[ch->output_idx].output;
741 if (output.capabilities != V4L2_OUT_CAP_STD)
742 return -ENODATA;
743
744 *std = ch->video.stdid;
745 return 0;
746 }
747
748 static int vpif_enum_output(struct file *file, void *fh,
749 struct v4l2_output *output)
750 {
751
752 struct vpif_display_config *config = vpif_dev->platform_data;
753 struct video_device *vdev = video_devdata(file);
754 struct channel_obj *ch = video_get_drvdata(vdev);
755 struct vpif_display_chan_config *chan_cfg;
756
757 chan_cfg = &config->chan_config[ch->channel_id];
758 if (output->index >= chan_cfg->output_count) {
759 vpif_dbg(1, debug, "Invalid output index\n");
760 return -EINVAL;
761 }
762
763 *output = chan_cfg->outputs[output->index].output;
764 return 0;
765 }
766
767 /**
768 * vpif_output_to_subdev() - Maps output to sub device
769 * @vpif_cfg - global config ptr
770 * @chan_cfg - channel config ptr
771 * @index - Given output index from application
772 *
773 * lookup the sub device information for a given output index.
774 * we report all the output to application. output table also
775 * has sub device name for the each output
776 */
777 static int
778 vpif_output_to_subdev(struct vpif_display_config *vpif_cfg,
779 struct vpif_display_chan_config *chan_cfg, int index)
780 {
781 struct vpif_subdev_info *subdev_info;
782 const char *subdev_name;
783 int i;
784
785 vpif_dbg(2, debug, "vpif_output_to_subdev\n");
786
787 if (chan_cfg->outputs == NULL)
788 return -1;
789
790 subdev_name = chan_cfg->outputs[index].subdev_name;
791 if (subdev_name == NULL)
792 return -1;
793
794 /* loop through the sub device list to get the sub device info */
795 for (i = 0; i < vpif_cfg->subdev_count; i++) {
796 subdev_info = &vpif_cfg->subdevinfo[i];
797 if (!strcmp(subdev_info->name, subdev_name))
798 return i;
799 }
800 return -1;
801 }
802
803 /**
804 * vpif_set_output() - Select an output
805 * @vpif_cfg - global config ptr
806 * @ch - channel
807 * @index - Given output index from application
808 *
809 * Select the given output.
810 */
811 static int vpif_set_output(struct vpif_display_config *vpif_cfg,
812 struct channel_obj *ch, int index)
813 {
814 struct vpif_display_chan_config *chan_cfg =
815 &vpif_cfg->chan_config[ch->channel_id];
816 struct vpif_subdev_info *subdev_info = NULL;
817 struct v4l2_subdev *sd = NULL;
818 u32 input = 0, output = 0;
819 int sd_index;
820 int ret;
821
822 sd_index = vpif_output_to_subdev(vpif_cfg, chan_cfg, index);
823 if (sd_index >= 0) {
824 sd = vpif_obj.sd[sd_index];
825 subdev_info = &vpif_cfg->subdevinfo[sd_index];
826 }
827
828 if (sd) {
829 input = chan_cfg->outputs[index].input_route;
830 output = chan_cfg->outputs[index].output_route;
831 ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0);
832 if (ret < 0 && ret != -ENOIOCTLCMD) {
833 vpif_err("Failed to set output\n");
834 return ret;
835 }
836
837 }
838 ch->output_idx = index;
839 ch->sd = sd;
840 if (chan_cfg->outputs != NULL)
841 /* update tvnorms from the sub device output info */
842 ch->video_dev->tvnorms = chan_cfg->outputs[index].output.std;
843 return 0;
844 }
845
846 static int vpif_s_output(struct file *file, void *priv, unsigned int i)
847 {
848 struct vpif_display_config *config = vpif_dev->platform_data;
849 struct video_device *vdev = video_devdata(file);
850 struct channel_obj *ch = video_get_drvdata(vdev);
851 struct vpif_display_chan_config *chan_cfg;
852 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
853
854 if (vb2_is_busy(&common->buffer_queue))
855 return -EBUSY;
856
857 chan_cfg = &config->chan_config[ch->channel_id];
858
859 if (i >= chan_cfg->output_count)
860 return -EINVAL;
861
862 return vpif_set_output(config, ch, i);
863 }
864
865 static int vpif_g_output(struct file *file, void *priv, unsigned int *i)
866 {
867 struct video_device *vdev = video_devdata(file);
868 struct channel_obj *ch = video_get_drvdata(vdev);
869
870 *i = ch->output_idx;
871
872 return 0;
873 }
874
875 /**
876 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
877 * @file: file ptr
878 * @priv: file handle
879 * @timings: input timings
880 */
881 static int
882 vpif_enum_dv_timings(struct file *file, void *priv,
883 struct v4l2_enum_dv_timings *timings)
884 {
885 struct vpif_display_config *config = vpif_dev->platform_data;
886 struct video_device *vdev = video_devdata(file);
887 struct channel_obj *ch = video_get_drvdata(vdev);
888 struct vpif_display_chan_config *chan_cfg;
889 struct v4l2_output output;
890 int ret;
891
892 if (config->chan_config[ch->channel_id].outputs == NULL)
893 return -ENODATA;
894
895 chan_cfg = &config->chan_config[ch->channel_id];
896 output = chan_cfg->outputs[ch->output_idx].output;
897 if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
898 return -ENODATA;
899
900 timings->pad = 0;
901
902 ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
903 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
904 return -EINVAL;
905 return ret;
906 }
907
908 /**
909 * vpif_s_dv_timings() - S_DV_TIMINGS handler
910 * @file: file ptr
911 * @priv: file handle
912 * @timings: digital video timings
913 */
914 static int vpif_s_dv_timings(struct file *file, void *priv,
915 struct v4l2_dv_timings *timings)
916 {
917 struct vpif_display_config *config = vpif_dev->platform_data;
918 struct video_device *vdev = video_devdata(file);
919 struct channel_obj *ch = video_get_drvdata(vdev);
920 struct vpif_params *vpifparams = &ch->vpifparams;
921 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
922 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
923 struct video_obj *vid_ch = &ch->video;
924 struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
925 struct vpif_display_chan_config *chan_cfg;
926 struct v4l2_output output;
927 int ret;
928
929 if (config->chan_config[ch->channel_id].outputs == NULL)
930 return -ENODATA;
931
932 chan_cfg = &config->chan_config[ch->channel_id];
933 output = chan_cfg->outputs[ch->output_idx].output;
934 if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
935 return -ENODATA;
936
937 if (vb2_is_busy(&common->buffer_queue))
938 return -EBUSY;
939
940 if (timings->type != V4L2_DV_BT_656_1120) {
941 vpif_dbg(2, debug, "Timing type not defined\n");
942 return -EINVAL;
943 }
944
945 /* Configure subdevice timings, if any */
946 ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
947 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
948 ret = 0;
949 if (ret < 0) {
950 vpif_dbg(2, debug, "Error setting custom DV timings\n");
951 return ret;
952 }
953
954 if (!(timings->bt.width && timings->bt.height &&
955 (timings->bt.hbackporch ||
956 timings->bt.hfrontporch ||
957 timings->bt.hsync) &&
958 timings->bt.vfrontporch &&
959 (timings->bt.vbackporch ||
960 timings->bt.vsync))) {
961 vpif_dbg(2, debug, "Timings for width, height, "
962 "horizontal back porch, horizontal sync, "
963 "horizontal front porch, vertical back porch, "
964 "vertical sync and vertical back porch "
965 "must be defined\n");
966 return -EINVAL;
967 }
968
969 vid_ch->dv_timings = *timings;
970
971 /* Configure video port timings */
972
973 std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
974 std_info->sav2eav = bt->width;
975
976 std_info->l1 = 1;
977 std_info->l3 = bt->vsync + bt->vbackporch + 1;
978
979 std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
980 if (bt->interlaced) {
981 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
982 std_info->l5 = std_info->vsize/2 -
983 (bt->vfrontporch - 1);
984 std_info->l7 = std_info->vsize/2 + 1;
985 std_info->l9 = std_info->l7 + bt->il_vsync +
986 bt->il_vbackporch + 1;
987 std_info->l11 = std_info->vsize -
988 (bt->il_vfrontporch - 1);
989 } else {
990 vpif_dbg(2, debug, "Required timing values for "
991 "interlaced BT format missing\n");
992 return -EINVAL;
993 }
994 } else {
995 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
996 }
997 strncpy(std_info->name, "Custom timings BT656/1120",
998 VPIF_MAX_NAME);
999 std_info->width = bt->width;
1000 std_info->height = bt->height;
1001 std_info->frm_fmt = bt->interlaced ? 0 : 1;
1002 std_info->ycmux_mode = 0;
1003 std_info->capture_format = 0;
1004 std_info->vbi_supported = 0;
1005 std_info->hd_sd = 1;
1006 std_info->stdid = 0;
1007 vid_ch->stdid = 0;
1008
1009 return 0;
1010 }
1011
1012 /**
1013 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1014 * @file: file ptr
1015 * @priv: file handle
1016 * @timings: digital video timings
1017 */
1018 static int vpif_g_dv_timings(struct file *file, void *priv,
1019 struct v4l2_dv_timings *timings)
1020 {
1021 struct vpif_display_config *config = vpif_dev->platform_data;
1022 struct video_device *vdev = video_devdata(file);
1023 struct channel_obj *ch = video_get_drvdata(vdev);
1024 struct vpif_display_chan_config *chan_cfg;
1025 struct video_obj *vid_ch = &ch->video;
1026 struct v4l2_output output;
1027
1028 if (config->chan_config[ch->channel_id].outputs == NULL)
1029 goto error;
1030
1031 chan_cfg = &config->chan_config[ch->channel_id];
1032 output = chan_cfg->outputs[ch->output_idx].output;
1033
1034 if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
1035 goto error;
1036
1037 *timings = vid_ch->dv_timings;
1038
1039 return 0;
1040 error:
1041 return -ENODATA;
1042 }
1043
1044 /*
1045 * vpif_log_status() - Status information
1046 * @file: file ptr
1047 * @priv: file handle
1048 *
1049 * Returns zero.
1050 */
1051 static int vpif_log_status(struct file *filep, void *priv)
1052 {
1053 /* status for sub devices */
1054 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1055
1056 return 0;
1057 }
1058
1059 /* vpif display ioctl operations */
1060 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1061 .vidioc_querycap = vpif_querycap,
1062 .vidioc_enum_fmt_vid_out = vpif_enum_fmt_vid_out,
1063 .vidioc_g_fmt_vid_out = vpif_g_fmt_vid_out,
1064 .vidioc_s_fmt_vid_out = vpif_s_fmt_vid_out,
1065 .vidioc_try_fmt_vid_out = vpif_try_fmt_vid_out,
1066
1067 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1068 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1069 .vidioc_querybuf = vb2_ioctl_querybuf,
1070 .vidioc_qbuf = vb2_ioctl_qbuf,
1071 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1072 .vidioc_expbuf = vb2_ioctl_expbuf,
1073 .vidioc_streamon = vb2_ioctl_streamon,
1074 .vidioc_streamoff = vb2_ioctl_streamoff,
1075
1076 .vidioc_s_std = vpif_s_std,
1077 .vidioc_g_std = vpif_g_std,
1078
1079 .vidioc_enum_output = vpif_enum_output,
1080 .vidioc_s_output = vpif_s_output,
1081 .vidioc_g_output = vpif_g_output,
1082
1083 .vidioc_enum_dv_timings = vpif_enum_dv_timings,
1084 .vidioc_s_dv_timings = vpif_s_dv_timings,
1085 .vidioc_g_dv_timings = vpif_g_dv_timings,
1086
1087 .vidioc_log_status = vpif_log_status,
1088 };
1089
1090 static const struct v4l2_file_operations vpif_fops = {
1091 .owner = THIS_MODULE,
1092 .open = v4l2_fh_open,
1093 .release = vb2_fop_release,
1094 .unlocked_ioctl = video_ioctl2,
1095 .mmap = vb2_fop_mmap,
1096 .poll = vb2_fop_poll
1097 };
1098
1099 /*Configure the channels, buffer sizei, request irq */
1100 static int initialize_vpif(void)
1101 {
1102 int free_channel_objects_index;
1103 int err, i, j;
1104
1105 /* Allocate memory for six channel objects */
1106 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1107 vpif_obj.dev[i] =
1108 kzalloc(sizeof(struct channel_obj), GFP_KERNEL);
1109 /* If memory allocation fails, return error */
1110 if (!vpif_obj.dev[i]) {
1111 free_channel_objects_index = i;
1112 err = -ENOMEM;
1113 goto vpif_init_free_channel_objects;
1114 }
1115 }
1116
1117 return 0;
1118
1119 vpif_init_free_channel_objects:
1120 for (j = 0; j < free_channel_objects_index; j++)
1121 kfree(vpif_obj.dev[j]);
1122 return err;
1123 }
1124
1125 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1126 struct v4l2_subdev *subdev,
1127 struct v4l2_async_subdev *asd)
1128 {
1129 int i;
1130
1131 for (i = 0; i < vpif_obj.config->subdev_count; i++)
1132 if (!strcmp(vpif_obj.config->subdevinfo[i].name,
1133 subdev->name)) {
1134 vpif_obj.sd[i] = subdev;
1135 vpif_obj.sd[i]->grp_id = 1 << i;
1136 return 0;
1137 }
1138
1139 return -EINVAL;
1140 }
1141
1142 static int vpif_probe_complete(void)
1143 {
1144 struct common_obj *common;
1145 struct video_device *vdev;
1146 struct channel_obj *ch;
1147 struct vb2_queue *q;
1148 int j, err, k;
1149
1150 for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
1151 ch = vpif_obj.dev[j];
1152 /* Initialize field of the channel objects */
1153 for (k = 0; k < VPIF_NUMOBJECTS; k++) {
1154 common = &ch->common[k];
1155 spin_lock_init(&common->irqlock);
1156 mutex_init(&common->lock);
1157 common->set_addr = NULL;
1158 common->ytop_off = 0;
1159 common->ybtm_off = 0;
1160 common->ctop_off = 0;
1161 common->cbtm_off = 0;
1162 common->cur_frm = NULL;
1163 common->next_frm = NULL;
1164 memset(&common->fmt, 0, sizeof(common->fmt));
1165 }
1166 ch->initialized = 0;
1167 if (vpif_obj.config->subdev_count)
1168 ch->sd = vpif_obj.sd[0];
1169 ch->channel_id = j;
1170
1171 memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
1172
1173 ch->common[VPIF_VIDEO_INDEX].fmt.type =
1174 V4L2_BUF_TYPE_VIDEO_OUTPUT;
1175
1176 /* select output 0 */
1177 err = vpif_set_output(vpif_obj.config, ch, 0);
1178 if (err)
1179 goto probe_out;
1180
1181 /* set initial format */
1182 ch->video.stdid = V4L2_STD_525_60;
1183 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1184 vpif_update_resolution(ch);
1185
1186 /* Initialize vb2 queue */
1187 q = &common->buffer_queue;
1188 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1189 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1190 q->drv_priv = ch;
1191 q->ops = &video_qops;
1192 q->mem_ops = &vb2_dma_contig_memops;
1193 q->buf_struct_size = sizeof(struct vpif_disp_buffer);
1194 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1195 q->min_buffers_needed = 1;
1196 q->lock = &common->lock;
1197 err = vb2_queue_init(q);
1198 if (err) {
1199 vpif_err("vpif_display: vb2_queue_init() failed\n");
1200 goto probe_out;
1201 }
1202
1203 common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
1204 if (IS_ERR(common->alloc_ctx)) {
1205 vpif_err("Failed to get the context\n");
1206 err = PTR_ERR(common->alloc_ctx);
1207 goto probe_out;
1208 }
1209
1210 INIT_LIST_HEAD(&common->dma_queue);
1211
1212 /* register video device */
1213 vpif_dbg(1, debug, "channel=%x,channel->video_dev=%x\n",
1214 (int)ch, (int)&ch->video_dev);
1215
1216 /* Initialize the video_device structure */
1217 vdev = ch->video_dev;
1218 strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1219 vdev->release = video_device_release;
1220 vdev->fops = &vpif_fops;
1221 vdev->ioctl_ops = &vpif_ioctl_ops;
1222 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1223 vdev->vfl_dir = VFL_DIR_TX;
1224 vdev->queue = q;
1225 vdev->lock = &common->lock;
1226 set_bit(V4L2_FL_USE_FH_PRIO, &vdev->flags);
1227 video_set_drvdata(ch->video_dev, ch);
1228 err = video_register_device(vdev, VFL_TYPE_GRABBER,
1229 (j ? 3 : 2));
1230 if (err < 0)
1231 goto probe_out;
1232 }
1233
1234 return 0;
1235
1236 probe_out:
1237 for (k = 0; k < j; k++) {
1238 ch = vpif_obj.dev[k];
1239 common = &ch->common[k];
1240 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
1241 video_unregister_device(ch->video_dev);
1242 video_device_release(ch->video_dev);
1243 ch->video_dev = NULL;
1244 }
1245 return err;
1246 }
1247
1248 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1249 {
1250 return vpif_probe_complete();
1251 }
1252
1253 /*
1254 * vpif_probe: This function creates device entries by register itself to the
1255 * V4L2 driver and initializes fields of each channel objects
1256 */
1257 static __init int vpif_probe(struct platform_device *pdev)
1258 {
1259 struct vpif_subdev_info *subdevdata;
1260 int i, j = 0, err = 0;
1261 int res_idx = 0;
1262 struct i2c_adapter *i2c_adap;
1263 struct channel_obj *ch;
1264 struct video_device *vfd;
1265 struct resource *res;
1266 int subdev_count;
1267
1268 vpif_dev = &pdev->dev;
1269 err = initialize_vpif();
1270
1271 if (err) {
1272 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1273 return err;
1274 }
1275
1276 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1277 if (err) {
1278 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1279 return err;
1280 }
1281
1282 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1283 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1284 IRQF_SHARED, VPIF_DRIVER_NAME,
1285 (void *)(&vpif_obj.dev[res_idx]->
1286 channel_id));
1287 if (err) {
1288 err = -EINVAL;
1289 vpif_err("VPIF IRQ request failed\n");
1290 goto vpif_unregister;
1291 }
1292 res_idx++;
1293 }
1294
1295 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1296 /* Get the pointer to the channel object */
1297 ch = vpif_obj.dev[i];
1298
1299 /* Allocate memory for video device */
1300 vfd = video_device_alloc();
1301 if (vfd == NULL) {
1302 for (j = 0; j < i; j++) {
1303 ch = vpif_obj.dev[j];
1304 video_device_release(ch->video_dev);
1305 }
1306 err = -ENOMEM;
1307 goto vpif_unregister;
1308 }
1309
1310 /* Set video_dev to the video device */
1311 ch->video_dev = vfd;
1312 }
1313
1314 vpif_obj.config = pdev->dev.platform_data;
1315 subdev_count = vpif_obj.config->subdev_count;
1316 subdevdata = vpif_obj.config->subdevinfo;
1317 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1318 GFP_KERNEL);
1319 if (vpif_obj.sd == NULL) {
1320 vpif_err("unable to allocate memory for subdevice pointers\n");
1321 err = -ENOMEM;
1322 goto vpif_sd_error;
1323 }
1324
1325 if (!vpif_obj.config->asd_sizes) {
1326 i2c_adap = i2c_get_adapter(1);
1327 for (i = 0; i < subdev_count; i++) {
1328 vpif_obj.sd[i] =
1329 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1330 i2c_adap,
1331 &subdevdata[i].
1332 board_info,
1333 NULL);
1334 if (!vpif_obj.sd[i]) {
1335 vpif_err("Error registering v4l2 subdevice\n");
1336 err = -ENODEV;
1337 goto probe_subdev_out;
1338 }
1339
1340 if (vpif_obj.sd[i])
1341 vpif_obj.sd[i]->grp_id = 1 << i;
1342 }
1343 vpif_probe_complete();
1344 } else {
1345 vpif_obj.notifier.subdevs = vpif_obj.config->asd;
1346 vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
1347 vpif_obj.notifier.bound = vpif_async_bound;
1348 vpif_obj.notifier.complete = vpif_async_complete;
1349 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1350 &vpif_obj.notifier);
1351 if (err) {
1352 vpif_err("Error registering async notifier\n");
1353 err = -EINVAL;
1354 goto probe_subdev_out;
1355 }
1356 }
1357
1358 return 0;
1359
1360 probe_subdev_out:
1361 kfree(vpif_obj.sd);
1362 vpif_sd_error:
1363 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1364 ch = vpif_obj.dev[i];
1365 /* Note: does nothing if ch->video_dev == NULL */
1366 video_device_release(ch->video_dev);
1367 }
1368 vpif_unregister:
1369 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1370
1371 return err;
1372 }
1373
1374 /*
1375 * vpif_remove: It un-register channels from V4L2 driver
1376 */
1377 static int vpif_remove(struct platform_device *device)
1378 {
1379 struct common_obj *common;
1380 struct channel_obj *ch;
1381 int i;
1382
1383 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1384
1385 kfree(vpif_obj.sd);
1386 /* un-register device */
1387 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1388 /* Get the pointer to the channel object */
1389 ch = vpif_obj.dev[i];
1390 common = &ch->common[i];
1391 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
1392 /* Unregister video device */
1393 video_unregister_device(ch->video_dev);
1394
1395 ch->video_dev = NULL;
1396 kfree(vpif_obj.dev[i]);
1397 }
1398
1399 return 0;
1400 }
1401
1402 #ifdef CONFIG_PM_SLEEP
1403 static int vpif_suspend(struct device *dev)
1404 {
1405 struct common_obj *common;
1406 struct channel_obj *ch;
1407 int i;
1408
1409 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1410 /* Get the pointer to the channel object */
1411 ch = vpif_obj.dev[i];
1412 common = &ch->common[VPIF_VIDEO_INDEX];
1413
1414 if (!vb2_is_streaming(&common->buffer_queue))
1415 continue;
1416
1417 mutex_lock(&common->lock);
1418 /* Disable channel */
1419 if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1420 enable_channel2(0);
1421 channel2_intr_enable(0);
1422 }
1423 if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1424 ycmux_mode == 2) {
1425 enable_channel3(0);
1426 channel3_intr_enable(0);
1427 }
1428 mutex_unlock(&common->lock);
1429 }
1430
1431 return 0;
1432 }
1433
1434 static int vpif_resume(struct device *dev)
1435 {
1436
1437 struct common_obj *common;
1438 struct channel_obj *ch;
1439 int i;
1440
1441 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1442 /* Get the pointer to the channel object */
1443 ch = vpif_obj.dev[i];
1444 common = &ch->common[VPIF_VIDEO_INDEX];
1445
1446 if (!vb2_is_streaming(&common->buffer_queue))
1447 continue;
1448
1449 mutex_lock(&common->lock);
1450 /* Enable channel */
1451 if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1452 enable_channel2(1);
1453 channel2_intr_enable(1);
1454 }
1455 if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1456 ycmux_mode == 2) {
1457 enable_channel3(1);
1458 channel3_intr_enable(1);
1459 }
1460 mutex_unlock(&common->lock);
1461 }
1462
1463 return 0;
1464 }
1465
1466 #endif
1467
1468 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1469
1470 static __refdata struct platform_driver vpif_driver = {
1471 .driver = {
1472 .name = VPIF_DRIVER_NAME,
1473 .owner = THIS_MODULE,
1474 .pm = &vpif_pm_ops,
1475 },
1476 .probe = vpif_probe,
1477 .remove = vpif_remove,
1478 };
1479
1480 module_platform_driver(vpif_driver);
Linux kernel - Deliverables
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