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[mirror_ubuntu-artful-kernel.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 MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
46
47 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
48 static int ycmux_mode;
49
50 static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} };
51
52 static struct vpif_device vpif_obj = { {NULL} };
53 static struct device *vpif_dev;
54 static void vpif_calculate_offsets(struct channel_obj *ch);
55 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
56
57 static inline
58 struct vpif_disp_buffer *to_vpif_buffer(struct vb2_v4l2_buffer *vb)
59 {
60 return container_of(vb, struct vpif_disp_buffer, vb);
61 }
62
63 /**
64 * vpif_buffer_prepare : callback function for buffer prepare
65 * @vb: ptr to vb2_buffer
66 *
67 * This is the callback function for buffer prepare when vb2_qbuf()
68 * function is called. The buffer is prepared and user space virtual address
69 * or user address is converted into physical address
70 */
71 static int vpif_buffer_prepare(struct vb2_buffer *vb)
72 {
73 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
74 struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
75 struct common_obj *common;
76
77 common = &ch->common[VPIF_VIDEO_INDEX];
78
79 vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
80 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
81 return -EINVAL;
82
83 vbuf->field = common->fmt.fmt.pix.field;
84
85 if (vb->vb2_queue->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) {
86 unsigned long addr = vb2_dma_contig_plane_dma_addr(vb, 0);
87
88 if (!ISALIGNED(addr + common->ytop_off) ||
89 !ISALIGNED(addr + common->ybtm_off) ||
90 !ISALIGNED(addr + common->ctop_off) ||
91 !ISALIGNED(addr + common->cbtm_off)) {
92 vpif_err("buffer offset not aligned to 8 bytes\n");
93 return -EINVAL;
94 }
95 }
96
97 return 0;
98 }
99
100 /**
101 * vpif_buffer_queue_setup : Callback function for buffer setup.
102 * @vq: vb2_queue ptr
103 * @nbuffers: ptr to number of buffers requested by application
104 * @nplanes:: contains number of distinct video planes needed to hold a frame
105 * @sizes[]: contains the size (in bytes) of each plane.
106 * @alloc_devs: ptr to allocation context
107 *
108 * This callback function is called when reqbuf() is called to adjust
109 * the buffer count and buffer size
110 */
111 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
112 unsigned int *nbuffers, unsigned int *nplanes,
113 unsigned int sizes[], struct device *alloc_devs[])
114 {
115 struct channel_obj *ch = vb2_get_drv_priv(vq);
116 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
117 unsigned size = common->fmt.fmt.pix.sizeimage;
118
119 if (*nplanes) {
120 if (sizes[0] < size)
121 return -EINVAL;
122 size = sizes[0];
123 }
124
125 if (vq->num_buffers + *nbuffers < 3)
126 *nbuffers = 3 - vq->num_buffers;
127
128 *nplanes = 1;
129 sizes[0] = size;
130
131 /* Calculate the offset for Y and C data in the buffer */
132 vpif_calculate_offsets(ch);
133
134 return 0;
135 }
136
137 /**
138 * vpif_buffer_queue : Callback function to add buffer to DMA queue
139 * @vb: ptr to vb2_buffer
140 *
141 * This callback fucntion queues the buffer to DMA engine
142 */
143 static void vpif_buffer_queue(struct vb2_buffer *vb)
144 {
145 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
146 struct vpif_disp_buffer *buf = to_vpif_buffer(vbuf);
147 struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
148 struct common_obj *common;
149 unsigned long flags;
150
151 common = &ch->common[VPIF_VIDEO_INDEX];
152
153 /* add the buffer to the DMA queue */
154 spin_lock_irqsave(&common->irqlock, flags);
155 list_add_tail(&buf->list, &common->dma_queue);
156 spin_unlock_irqrestore(&common->irqlock, flags);
157 }
158
159 /**
160 * vpif_start_streaming : Starts the DMA engine for streaming
161 * @vb: ptr to vb2_buffer
162 * @count: number of buffers
163 */
164 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
165 {
166 struct vpif_display_config *vpif_config_data =
167 vpif_dev->platform_data;
168 struct channel_obj *ch = vb2_get_drv_priv(vq);
169 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
170 struct vpif_params *vpif = &ch->vpifparams;
171 struct vpif_disp_buffer *buf, *tmp;
172 unsigned long addr, flags;
173 int ret;
174
175 spin_lock_irqsave(&common->irqlock, flags);
176
177 /* Initialize field_id */
178 ch->field_id = 0;
179
180 /* clock settings */
181 if (vpif_config_data->set_clock) {
182 ret = vpif_config_data->set_clock(ch->vpifparams.std_info.
183 ycmux_mode, ch->vpifparams.std_info.hd_sd);
184 if (ret < 0) {
185 vpif_err("can't set clock\n");
186 goto err;
187 }
188 }
189
190 /* set the parameters and addresses */
191 ret = vpif_set_video_params(vpif, ch->channel_id + 2);
192 if (ret < 0)
193 goto err;
194
195 ycmux_mode = ret;
196 vpif_config_addr(ch, ret);
197 /* Get the next frame from the buffer queue */
198 common->next_frm = common->cur_frm =
199 list_entry(common->dma_queue.next,
200 struct vpif_disp_buffer, list);
201
202 list_del(&common->cur_frm->list);
203 spin_unlock_irqrestore(&common->irqlock, flags);
204
205 addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb.vb2_buf, 0);
206 common->set_addr((addr + common->ytop_off),
207 (addr + common->ybtm_off),
208 (addr + common->ctop_off),
209 (addr + common->cbtm_off));
210
211 /*
212 * Set interrupt for both the fields in VPIF
213 * Register enable channel in VPIF register
214 */
215 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
216 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
217 channel2_intr_assert();
218 channel2_intr_enable(1);
219 enable_channel2(1);
220 if (vpif_config_data->chan_config[VPIF_CHANNEL2_VIDEO].clip_en)
221 channel2_clipping_enable(1);
222 }
223
224 if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) {
225 channel3_intr_assert();
226 channel3_intr_enable(1);
227 enable_channel3(1);
228 if (vpif_config_data->chan_config[VPIF_CHANNEL3_VIDEO].clip_en)
229 channel3_clipping_enable(1);
230 }
231
232 return 0;
233
234 err:
235 list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
236 list_del(&buf->list);
237 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
238 }
239 spin_unlock_irqrestore(&common->irqlock, flags);
240
241 return ret;
242 }
243
244 /**
245 * vpif_stop_streaming : Stop the DMA engine
246 * @vq: ptr to vb2_queue
247 *
248 * This callback stops the DMA engine and any remaining buffers
249 * in the DMA queue are released.
250 */
251 static void vpif_stop_streaming(struct vb2_queue *vq)
252 {
253 struct channel_obj *ch = vb2_get_drv_priv(vq);
254 struct common_obj *common;
255 unsigned long flags;
256
257 common = &ch->common[VPIF_VIDEO_INDEX];
258
259 /* Disable channel */
260 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
261 enable_channel2(0);
262 channel2_intr_enable(0);
263 }
264 if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) {
265 enable_channel3(0);
266 channel3_intr_enable(0);
267 }
268
269 /* release all active buffers */
270 spin_lock_irqsave(&common->irqlock, flags);
271 if (common->cur_frm == common->next_frm) {
272 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
273 VB2_BUF_STATE_ERROR);
274 } else {
275 if (common->cur_frm)
276 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
277 VB2_BUF_STATE_ERROR);
278 if (common->next_frm)
279 vb2_buffer_done(&common->next_frm->vb.vb2_buf,
280 VB2_BUF_STATE_ERROR);
281 }
282
283 while (!list_empty(&common->dma_queue)) {
284 common->next_frm = list_entry(common->dma_queue.next,
285 struct vpif_disp_buffer, list);
286 list_del(&common->next_frm->list);
287 vb2_buffer_done(&common->next_frm->vb.vb2_buf,
288 VB2_BUF_STATE_ERROR);
289 }
290 spin_unlock_irqrestore(&common->irqlock, flags);
291 }
292
293 static struct vb2_ops video_qops = {
294 .queue_setup = vpif_buffer_queue_setup,
295 .wait_prepare = vb2_ops_wait_prepare,
296 .wait_finish = vb2_ops_wait_finish,
297 .buf_prepare = vpif_buffer_prepare,
298 .start_streaming = vpif_start_streaming,
299 .stop_streaming = vpif_stop_streaming,
300 .buf_queue = vpif_buffer_queue,
301 };
302
303 static void process_progressive_mode(struct common_obj *common)
304 {
305 unsigned long addr;
306
307 spin_lock(&common->irqlock);
308 /* Get the next buffer from buffer queue */
309 common->next_frm = list_entry(common->dma_queue.next,
310 struct vpif_disp_buffer, list);
311 /* Remove that buffer from the buffer queue */
312 list_del(&common->next_frm->list);
313 spin_unlock(&common->irqlock);
314
315 /* Set top and bottom field addrs in VPIF registers */
316 addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 0);
317 common->set_addr(addr + common->ytop_off,
318 addr + common->ybtm_off,
319 addr + common->ctop_off,
320 addr + common->cbtm_off);
321 }
322
323 static void process_interlaced_mode(int fid, struct common_obj *common)
324 {
325 /* device field id and local field id are in sync */
326 /* If this is even field */
327 if (0 == fid) {
328 if (common->cur_frm == common->next_frm)
329 return;
330
331 /* one frame is displayed If next frame is
332 * available, release cur_frm and move on */
333 /* Copy frame display time */
334 common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
335 /* Change status of the cur_frm */
336 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
337 VB2_BUF_STATE_DONE);
338 /* Make cur_frm pointing to next_frm */
339 common->cur_frm = common->next_frm;
340
341 } else if (1 == fid) { /* odd field */
342 spin_lock(&common->irqlock);
343 if (list_empty(&common->dma_queue)
344 || (common->cur_frm != common->next_frm)) {
345 spin_unlock(&common->irqlock);
346 return;
347 }
348 spin_unlock(&common->irqlock);
349 /* one field is displayed configure the next
350 * frame if it is available else hold on current
351 * frame */
352 /* Get next from the buffer queue */
353 process_progressive_mode(common);
354 }
355 }
356
357 /*
358 * vpif_channel_isr: It changes status of the displayed buffer, takes next
359 * buffer from the queue and sets its address in VPIF registers
360 */
361 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
362 {
363 struct vpif_device *dev = &vpif_obj;
364 struct channel_obj *ch;
365 struct common_obj *common;
366 int fid = -1, i;
367 int channel_id;
368
369 channel_id = *(int *)(dev_id);
370 if (!vpif_intr_status(channel_id + 2))
371 return IRQ_NONE;
372
373 ch = dev->dev[channel_id];
374 for (i = 0; i < VPIF_NUMOBJECTS; i++) {
375 common = &ch->common[i];
376 /* If streaming is started in this channel */
377
378 if (1 == ch->vpifparams.std_info.frm_fmt) {
379 spin_lock(&common->irqlock);
380 if (list_empty(&common->dma_queue)) {
381 spin_unlock(&common->irqlock);
382 continue;
383 }
384 spin_unlock(&common->irqlock);
385
386 /* Progressive mode */
387 if (!channel_first_int[i][channel_id]) {
388 /* Mark status of the cur_frm to
389 * done and unlock semaphore on it */
390 common->cur_frm->vb.vb2_buf.timestamp =
391 ktime_get_ns();
392 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
393 VB2_BUF_STATE_DONE);
394 /* Make cur_frm pointing to next_frm */
395 common->cur_frm = common->next_frm;
396 }
397
398 channel_first_int[i][channel_id] = 0;
399 process_progressive_mode(common);
400 } else {
401 /* Interlaced mode */
402 /* If it is first interrupt, ignore it */
403
404 if (channel_first_int[i][channel_id]) {
405 channel_first_int[i][channel_id] = 0;
406 continue;
407 }
408
409 if (0 == i) {
410 ch->field_id ^= 1;
411 /* Get field id from VPIF registers */
412 fid = vpif_channel_getfid(ch->channel_id + 2);
413 /* If fid does not match with stored field id */
414 if (fid != ch->field_id) {
415 /* Make them in sync */
416 if (0 == fid)
417 ch->field_id = fid;
418
419 return IRQ_HANDLED;
420 }
421 }
422 process_interlaced_mode(fid, common);
423 }
424 }
425
426 return IRQ_HANDLED;
427 }
428
429 static int vpif_update_std_info(struct channel_obj *ch)
430 {
431 struct video_obj *vid_ch = &ch->video;
432 struct vpif_params *vpifparams = &ch->vpifparams;
433 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
434 const struct vpif_channel_config_params *config;
435
436 int i;
437
438 for (i = 0; i < vpif_ch_params_count; i++) {
439 config = &vpif_ch_params[i];
440 if (config->hd_sd == 0) {
441 vpif_dbg(2, debug, "SD format\n");
442 if (config->stdid & vid_ch->stdid) {
443 memcpy(std_info, config, sizeof(*config));
444 break;
445 }
446 }
447 }
448
449 if (i == vpif_ch_params_count) {
450 vpif_dbg(1, debug, "Format not found\n");
451 return -EINVAL;
452 }
453
454 return 0;
455 }
456
457 static int vpif_update_resolution(struct channel_obj *ch)
458 {
459 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
460 struct video_obj *vid_ch = &ch->video;
461 struct vpif_params *vpifparams = &ch->vpifparams;
462 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
463
464 if (!vid_ch->stdid && !vid_ch->dv_timings.bt.height)
465 return -EINVAL;
466
467 if (vid_ch->stdid) {
468 if (vpif_update_std_info(ch))
469 return -EINVAL;
470 }
471
472 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
473 common->fmt.fmt.pix.width = std_info->width;
474 common->fmt.fmt.pix.height = std_info->height;
475 vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n",
476 common->fmt.fmt.pix.width, common->fmt.fmt.pix.height);
477
478 /* Set height and width paramateres */
479 common->height = std_info->height;
480 common->width = std_info->width;
481 common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
482
483 if (vid_ch->stdid)
484 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
485 else
486 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
487
488 if (ch->vpifparams.std_info.frm_fmt)
489 common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
490 else
491 common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
492
493 return 0;
494 }
495
496 /*
497 * vpif_calculate_offsets: This function calculates buffers offset for Y and C
498 * in the top and bottom field
499 */
500 static void vpif_calculate_offsets(struct channel_obj *ch)
501 {
502 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
503 struct vpif_params *vpifparams = &ch->vpifparams;
504 enum v4l2_field field = common->fmt.fmt.pix.field;
505 struct video_obj *vid_ch = &ch->video;
506 unsigned int hpitch, sizeimage;
507
508 if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) {
509 if (ch->vpifparams.std_info.frm_fmt)
510 vid_ch->buf_field = V4L2_FIELD_NONE;
511 else
512 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
513 } else {
514 vid_ch->buf_field = common->fmt.fmt.pix.field;
515 }
516
517 sizeimage = common->fmt.fmt.pix.sizeimage;
518
519 hpitch = common->fmt.fmt.pix.bytesperline;
520 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
521 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
522 common->ytop_off = 0;
523 common->ybtm_off = hpitch;
524 common->ctop_off = sizeimage / 2;
525 common->cbtm_off = sizeimage / 2 + hpitch;
526 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
527 common->ytop_off = 0;
528 common->ybtm_off = sizeimage / 4;
529 common->ctop_off = sizeimage / 2;
530 common->cbtm_off = common->ctop_off + sizeimage / 4;
531 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
532 common->ybtm_off = 0;
533 common->ytop_off = sizeimage / 4;
534 common->cbtm_off = sizeimage / 2;
535 common->ctop_off = common->cbtm_off + sizeimage / 4;
536 }
537
538 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
539 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
540 vpifparams->video_params.storage_mode = 1;
541 } else {
542 vpifparams->video_params.storage_mode = 0;
543 }
544
545 if (ch->vpifparams.std_info.frm_fmt == 1) {
546 vpifparams->video_params.hpitch =
547 common->fmt.fmt.pix.bytesperline;
548 } else {
549 if ((field == V4L2_FIELD_ANY) ||
550 (field == V4L2_FIELD_INTERLACED))
551 vpifparams->video_params.hpitch =
552 common->fmt.fmt.pix.bytesperline * 2;
553 else
554 vpifparams->video_params.hpitch =
555 common->fmt.fmt.pix.bytesperline;
556 }
557
558 ch->vpifparams.video_params.stdid = ch->vpifparams.std_info.stdid;
559 }
560
561 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
562 {
563 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
564
565 if (VPIF_CHANNEL3_VIDEO == ch->channel_id) {
566 common->set_addr = ch3_set_videobuf_addr;
567 } else {
568 if (2 == muxmode)
569 common->set_addr = ch2_set_videobuf_addr_yc_nmux;
570 else
571 common->set_addr = ch2_set_videobuf_addr;
572 }
573 }
574
575 /* functions implementing ioctls */
576 /**
577 * vpif_querycap() - QUERYCAP handler
578 * @file: file ptr
579 * @priv: file handle
580 * @cap: ptr to v4l2_capability structure
581 */
582 static int vpif_querycap(struct file *file, void *priv,
583 struct v4l2_capability *cap)
584 {
585 struct vpif_display_config *config = vpif_dev->platform_data;
586
587 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
588 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
589 strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
590 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
591 dev_name(vpif_dev));
592 strlcpy(cap->card, config->card_name, sizeof(cap->card));
593
594 return 0;
595 }
596
597 static int vpif_enum_fmt_vid_out(struct file *file, void *priv,
598 struct v4l2_fmtdesc *fmt)
599 {
600 if (fmt->index != 0)
601 return -EINVAL;
602
603 /* Fill in the information about format */
604 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
605 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
606 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
607 fmt->flags = 0;
608 return 0;
609 }
610
611 static int vpif_g_fmt_vid_out(struct file *file, void *priv,
612 struct v4l2_format *fmt)
613 {
614 struct video_device *vdev = video_devdata(file);
615 struct channel_obj *ch = video_get_drvdata(vdev);
616 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
617
618 /* Check the validity of the buffer type */
619 if (common->fmt.type != fmt->type)
620 return -EINVAL;
621
622 if (vpif_update_resolution(ch))
623 return -EINVAL;
624 *fmt = common->fmt;
625 return 0;
626 }
627
628 static int vpif_try_fmt_vid_out(struct file *file, void *priv,
629 struct v4l2_format *fmt)
630 {
631 struct video_device *vdev = video_devdata(file);
632 struct channel_obj *ch = video_get_drvdata(vdev);
633 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
634 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
635
636 /*
637 * to supress v4l-compliance warnings silently correct
638 * the pixelformat
639 */
640 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
641 pixfmt->pixelformat = common->fmt.fmt.pix.pixelformat;
642
643 if (vpif_update_resolution(ch))
644 return -EINVAL;
645
646 pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
647 pixfmt->field = common->fmt.fmt.pix.field;
648 pixfmt->bytesperline = common->fmt.fmt.pix.width;
649 pixfmt->width = common->fmt.fmt.pix.width;
650 pixfmt->height = common->fmt.fmt.pix.height;
651 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
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)
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)
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)
788 return -1;
789
790 subdev_name = chan_cfg->outputs[index].subdev_name;
791 if (!subdev_name)
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 v4l2_subdev *sd = NULL;
817 u32 input = 0, output = 0;
818 int sd_index;
819 int ret;
820
821 sd_index = vpif_output_to_subdev(vpif_cfg, chan_cfg, index);
822 if (sd_index >= 0)
823 sd = vpif_obj.sd[sd_index];
824
825 if (sd) {
826 input = chan_cfg->outputs[index].input_route;
827 output = chan_cfg->outputs[index].output_route;
828 ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0);
829 if (ret < 0 && ret != -ENOIOCTLCMD) {
830 vpif_err("Failed to set output\n");
831 return ret;
832 }
833
834 }
835 ch->output_idx = index;
836 ch->sd = sd;
837 if (chan_cfg->outputs)
838 /* update tvnorms from the sub device output info */
839 ch->video_dev.tvnorms = chan_cfg->outputs[index].output.std;
840 return 0;
841 }
842
843 static int vpif_s_output(struct file *file, void *priv, unsigned int i)
844 {
845 struct vpif_display_config *config = vpif_dev->platform_data;
846 struct video_device *vdev = video_devdata(file);
847 struct channel_obj *ch = video_get_drvdata(vdev);
848 struct vpif_display_chan_config *chan_cfg;
849 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
850
851 if (vb2_is_busy(&common->buffer_queue))
852 return -EBUSY;
853
854 chan_cfg = &config->chan_config[ch->channel_id];
855
856 if (i >= chan_cfg->output_count)
857 return -EINVAL;
858
859 return vpif_set_output(config, ch, i);
860 }
861
862 static int vpif_g_output(struct file *file, void *priv, unsigned int *i)
863 {
864 struct video_device *vdev = video_devdata(file);
865 struct channel_obj *ch = video_get_drvdata(vdev);
866
867 *i = ch->output_idx;
868
869 return 0;
870 }
871
872 /**
873 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
874 * @file: file ptr
875 * @priv: file handle
876 * @timings: input timings
877 */
878 static int
879 vpif_enum_dv_timings(struct file *file, void *priv,
880 struct v4l2_enum_dv_timings *timings)
881 {
882 struct vpif_display_config *config = vpif_dev->platform_data;
883 struct video_device *vdev = video_devdata(file);
884 struct channel_obj *ch = video_get_drvdata(vdev);
885 struct vpif_display_chan_config *chan_cfg;
886 struct v4l2_output output;
887 int ret;
888
889 if (!config->chan_config[ch->channel_id].outputs)
890 return -ENODATA;
891
892 chan_cfg = &config->chan_config[ch->channel_id];
893 output = chan_cfg->outputs[ch->output_idx].output;
894 if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
895 return -ENODATA;
896
897 timings->pad = 0;
898
899 ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
900 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
901 return -EINVAL;
902 return ret;
903 }
904
905 /**
906 * vpif_s_dv_timings() - S_DV_TIMINGS handler
907 * @file: file ptr
908 * @priv: file handle
909 * @timings: digital video timings
910 */
911 static int vpif_s_dv_timings(struct file *file, void *priv,
912 struct v4l2_dv_timings *timings)
913 {
914 struct vpif_display_config *config = vpif_dev->platform_data;
915 struct video_device *vdev = video_devdata(file);
916 struct channel_obj *ch = video_get_drvdata(vdev);
917 struct vpif_params *vpifparams = &ch->vpifparams;
918 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
919 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
920 struct video_obj *vid_ch = &ch->video;
921 struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
922 struct vpif_display_chan_config *chan_cfg;
923 struct v4l2_output output;
924 int ret;
925
926 if (!config->chan_config[ch->channel_id].outputs)
927 return -ENODATA;
928
929 chan_cfg = &config->chan_config[ch->channel_id];
930 output = chan_cfg->outputs[ch->output_idx].output;
931 if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
932 return -ENODATA;
933
934 if (vb2_is_busy(&common->buffer_queue))
935 return -EBUSY;
936
937 if (timings->type != V4L2_DV_BT_656_1120) {
938 vpif_dbg(2, debug, "Timing type not defined\n");
939 return -EINVAL;
940 }
941
942 /* Configure subdevice timings, if any */
943 ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
944 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
945 ret = 0;
946 if (ret < 0) {
947 vpif_dbg(2, debug, "Error setting custom DV timings\n");
948 return ret;
949 }
950
951 if (!(timings->bt.width && timings->bt.height &&
952 (timings->bt.hbackporch ||
953 timings->bt.hfrontporch ||
954 timings->bt.hsync) &&
955 timings->bt.vfrontporch &&
956 (timings->bt.vbackporch ||
957 timings->bt.vsync))) {
958 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");
959 return -EINVAL;
960 }
961
962 vid_ch->dv_timings = *timings;
963
964 /* Configure video port timings */
965
966 std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
967 std_info->sav2eav = bt->width;
968
969 std_info->l1 = 1;
970 std_info->l3 = bt->vsync + bt->vbackporch + 1;
971
972 std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
973 if (bt->interlaced) {
974 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
975 std_info->l5 = std_info->vsize/2 -
976 (bt->vfrontporch - 1);
977 std_info->l7 = std_info->vsize/2 + 1;
978 std_info->l9 = std_info->l7 + bt->il_vsync +
979 bt->il_vbackporch + 1;
980 std_info->l11 = std_info->vsize -
981 (bt->il_vfrontporch - 1);
982 } else {
983 vpif_dbg(2, debug, "Required timing values for interlaced BT format missing\n");
984 return -EINVAL;
985 }
986 } else {
987 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
988 }
989 strncpy(std_info->name, "Custom timings BT656/1120",
990 VPIF_MAX_NAME);
991 std_info->width = bt->width;
992 std_info->height = bt->height;
993 std_info->frm_fmt = bt->interlaced ? 0 : 1;
994 std_info->ycmux_mode = 0;
995 std_info->capture_format = 0;
996 std_info->vbi_supported = 0;
997 std_info->hd_sd = 1;
998 std_info->stdid = 0;
999 vid_ch->stdid = 0;
1000
1001 return 0;
1002 }
1003
1004 /**
1005 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1006 * @file: file ptr
1007 * @priv: file handle
1008 * @timings: digital video timings
1009 */
1010 static int vpif_g_dv_timings(struct file *file, void *priv,
1011 struct v4l2_dv_timings *timings)
1012 {
1013 struct vpif_display_config *config = vpif_dev->platform_data;
1014 struct video_device *vdev = video_devdata(file);
1015 struct channel_obj *ch = video_get_drvdata(vdev);
1016 struct vpif_display_chan_config *chan_cfg;
1017 struct video_obj *vid_ch = &ch->video;
1018 struct v4l2_output output;
1019
1020 if (!config->chan_config[ch->channel_id].outputs)
1021 goto error;
1022
1023 chan_cfg = &config->chan_config[ch->channel_id];
1024 output = chan_cfg->outputs[ch->output_idx].output;
1025
1026 if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
1027 goto error;
1028
1029 *timings = vid_ch->dv_timings;
1030
1031 return 0;
1032 error:
1033 return -ENODATA;
1034 }
1035
1036 /*
1037 * vpif_log_status() - Status information
1038 * @file: file ptr
1039 * @priv: file handle
1040 *
1041 * Returns zero.
1042 */
1043 static int vpif_log_status(struct file *filep, void *priv)
1044 {
1045 /* status for sub devices */
1046 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1047
1048 return 0;
1049 }
1050
1051 /* vpif display ioctl operations */
1052 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1053 .vidioc_querycap = vpif_querycap,
1054 .vidioc_enum_fmt_vid_out = vpif_enum_fmt_vid_out,
1055 .vidioc_g_fmt_vid_out = vpif_g_fmt_vid_out,
1056 .vidioc_s_fmt_vid_out = vpif_s_fmt_vid_out,
1057 .vidioc_try_fmt_vid_out = vpif_try_fmt_vid_out,
1058
1059 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1060 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1061 .vidioc_querybuf = vb2_ioctl_querybuf,
1062 .vidioc_qbuf = vb2_ioctl_qbuf,
1063 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1064 .vidioc_expbuf = vb2_ioctl_expbuf,
1065 .vidioc_streamon = vb2_ioctl_streamon,
1066 .vidioc_streamoff = vb2_ioctl_streamoff,
1067
1068 .vidioc_s_std = vpif_s_std,
1069 .vidioc_g_std = vpif_g_std,
1070
1071 .vidioc_enum_output = vpif_enum_output,
1072 .vidioc_s_output = vpif_s_output,
1073 .vidioc_g_output = vpif_g_output,
1074
1075 .vidioc_enum_dv_timings = vpif_enum_dv_timings,
1076 .vidioc_s_dv_timings = vpif_s_dv_timings,
1077 .vidioc_g_dv_timings = vpif_g_dv_timings,
1078
1079 .vidioc_log_status = vpif_log_status,
1080 };
1081
1082 static const struct v4l2_file_operations vpif_fops = {
1083 .owner = THIS_MODULE,
1084 .open = v4l2_fh_open,
1085 .release = vb2_fop_release,
1086 .unlocked_ioctl = video_ioctl2,
1087 .mmap = vb2_fop_mmap,
1088 .poll = vb2_fop_poll
1089 };
1090
1091 /*Configure the channels, buffer sizei, request irq */
1092 static int initialize_vpif(void)
1093 {
1094 int free_channel_objects_index;
1095 int err, i, j;
1096
1097 /* Allocate memory for six channel objects */
1098 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1099 vpif_obj.dev[i] =
1100 kzalloc(sizeof(struct channel_obj), GFP_KERNEL);
1101 /* If memory allocation fails, return error */
1102 if (!vpif_obj.dev[i]) {
1103 free_channel_objects_index = i;
1104 err = -ENOMEM;
1105 goto vpif_init_free_channel_objects;
1106 }
1107 }
1108
1109 return 0;
1110
1111 vpif_init_free_channel_objects:
1112 for (j = 0; j < free_channel_objects_index; j++)
1113 kfree(vpif_obj.dev[j]);
1114 return err;
1115 }
1116
1117 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1118 struct v4l2_subdev *subdev,
1119 struct v4l2_async_subdev *asd)
1120 {
1121 int i;
1122
1123 for (i = 0; i < vpif_obj.config->subdev_count; i++)
1124 if (!strcmp(vpif_obj.config->subdevinfo[i].name,
1125 subdev->name)) {
1126 vpif_obj.sd[i] = subdev;
1127 vpif_obj.sd[i]->grp_id = 1 << i;
1128 return 0;
1129 }
1130
1131 return -EINVAL;
1132 }
1133
1134 static int vpif_probe_complete(void)
1135 {
1136 struct common_obj *common;
1137 struct video_device *vdev;
1138 struct channel_obj *ch;
1139 struct vb2_queue *q;
1140 int j, err, k;
1141
1142 for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
1143 ch = vpif_obj.dev[j];
1144 /* Initialize field of the channel objects */
1145 for (k = 0; k < VPIF_NUMOBJECTS; k++) {
1146 common = &ch->common[k];
1147 spin_lock_init(&common->irqlock);
1148 mutex_init(&common->lock);
1149 common->set_addr = NULL;
1150 common->ytop_off = 0;
1151 common->ybtm_off = 0;
1152 common->ctop_off = 0;
1153 common->cbtm_off = 0;
1154 common->cur_frm = NULL;
1155 common->next_frm = NULL;
1156 memset(&common->fmt, 0, sizeof(common->fmt));
1157 }
1158 ch->initialized = 0;
1159 if (vpif_obj.config->subdev_count)
1160 ch->sd = vpif_obj.sd[0];
1161 ch->channel_id = j;
1162
1163 memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
1164
1165 ch->common[VPIF_VIDEO_INDEX].fmt.type =
1166 V4L2_BUF_TYPE_VIDEO_OUTPUT;
1167
1168 /* select output 0 */
1169 err = vpif_set_output(vpif_obj.config, ch, 0);
1170 if (err)
1171 goto probe_out;
1172
1173 /* set initial format */
1174 ch->video.stdid = V4L2_STD_525_60;
1175 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1176 vpif_update_resolution(ch);
1177
1178 /* Initialize vb2 queue */
1179 q = &common->buffer_queue;
1180 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1181 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1182 q->drv_priv = ch;
1183 q->ops = &video_qops;
1184 q->mem_ops = &vb2_dma_contig_memops;
1185 q->buf_struct_size = sizeof(struct vpif_disp_buffer);
1186 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1187 q->min_buffers_needed = 1;
1188 q->lock = &common->lock;
1189 q->dev = vpif_dev;
1190 err = vb2_queue_init(q);
1191 if (err) {
1192 vpif_err("vpif_display: vb2_queue_init() failed\n");
1193 goto probe_out;
1194 }
1195
1196 INIT_LIST_HEAD(&common->dma_queue);
1197
1198 /* register video device */
1199 vpif_dbg(1, debug, "channel=%p,channel->video_dev=%p\n",
1200 ch, &ch->video_dev);
1201
1202 /* Initialize the video_device structure */
1203 vdev = &ch->video_dev;
1204 strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1205 vdev->release = video_device_release_empty;
1206 vdev->fops = &vpif_fops;
1207 vdev->ioctl_ops = &vpif_ioctl_ops;
1208 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1209 vdev->vfl_dir = VFL_DIR_TX;
1210 vdev->queue = q;
1211 vdev->lock = &common->lock;
1212 video_set_drvdata(&ch->video_dev, ch);
1213 err = video_register_device(vdev, VFL_TYPE_GRABBER,
1214 (j ? 3 : 2));
1215 if (err < 0)
1216 goto probe_out;
1217 }
1218
1219 return 0;
1220
1221 probe_out:
1222 for (k = 0; k < j; k++) {
1223 ch = vpif_obj.dev[k];
1224 common = &ch->common[k];
1225 video_unregister_device(&ch->video_dev);
1226 }
1227 return err;
1228 }
1229
1230 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1231 {
1232 return vpif_probe_complete();
1233 }
1234
1235 /*
1236 * vpif_probe: This function creates device entries by register itself to the
1237 * V4L2 driver and initializes fields of each channel objects
1238 */
1239 static __init int vpif_probe(struct platform_device *pdev)
1240 {
1241 struct vpif_subdev_info *subdevdata;
1242 struct i2c_adapter *i2c_adap;
1243 struct resource *res;
1244 int subdev_count;
1245 int res_idx = 0;
1246 int i, err;
1247
1248 if (!pdev->dev.platform_data) {
1249 dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
1250 return -EINVAL;
1251 }
1252
1253 if (!pdev->dev.platform_data) {
1254 dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
1255 return -EINVAL;
1256 }
1257
1258 vpif_dev = &pdev->dev;
1259 err = initialize_vpif();
1260
1261 if (err) {
1262 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1263 return err;
1264 }
1265
1266 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1267 if (err) {
1268 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1269 return err;
1270 }
1271
1272 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1273 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1274 IRQF_SHARED, VPIF_DRIVER_NAME,
1275 (void *)(&vpif_obj.dev[res_idx]->
1276 channel_id));
1277 if (err) {
1278 err = -EINVAL;
1279 vpif_err("VPIF IRQ request failed\n");
1280 goto vpif_unregister;
1281 }
1282 res_idx++;
1283 }
1284
1285 vpif_obj.config = pdev->dev.platform_data;
1286 subdev_count = vpif_obj.config->subdev_count;
1287 subdevdata = vpif_obj.config->subdevinfo;
1288 vpif_obj.sd = kcalloc(subdev_count, sizeof(*vpif_obj.sd), GFP_KERNEL);
1289 if (!vpif_obj.sd) {
1290 err = -ENOMEM;
1291 goto vpif_unregister;
1292 }
1293
1294 if (!vpif_obj.config->asd_sizes) {
1295 i2c_adap = i2c_get_adapter(vpif_obj.config->i2c_adapter_id);
1296 for (i = 0; i < subdev_count; i++) {
1297 vpif_obj.sd[i] =
1298 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1299 i2c_adap,
1300 &subdevdata[i].
1301 board_info,
1302 NULL);
1303 if (!vpif_obj.sd[i]) {
1304 vpif_err("Error registering v4l2 subdevice\n");
1305 err = -ENODEV;
1306 goto probe_subdev_out;
1307 }
1308
1309 if (vpif_obj.sd[i])
1310 vpif_obj.sd[i]->grp_id = 1 << i;
1311 }
1312 vpif_probe_complete();
1313 } else {
1314 vpif_obj.notifier.subdevs = vpif_obj.config->asd;
1315 vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
1316 vpif_obj.notifier.bound = vpif_async_bound;
1317 vpif_obj.notifier.complete = vpif_async_complete;
1318 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1319 &vpif_obj.notifier);
1320 if (err) {
1321 vpif_err("Error registering async notifier\n");
1322 err = -EINVAL;
1323 goto probe_subdev_out;
1324 }
1325 }
1326
1327 return 0;
1328
1329 probe_subdev_out:
1330 kfree(vpif_obj.sd);
1331 vpif_unregister:
1332 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1333
1334 return err;
1335 }
1336
1337 /*
1338 * vpif_remove: It un-register channels from V4L2 driver
1339 */
1340 static int vpif_remove(struct platform_device *device)
1341 {
1342 struct common_obj *common;
1343 struct channel_obj *ch;
1344 int i;
1345
1346 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1347
1348 kfree(vpif_obj.sd);
1349 /* un-register device */
1350 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1351 /* Get the pointer to the channel object */
1352 ch = vpif_obj.dev[i];
1353 common = &ch->common[VPIF_VIDEO_INDEX];
1354 /* Unregister video device */
1355 video_unregister_device(&ch->video_dev);
1356 kfree(vpif_obj.dev[i]);
1357 }
1358
1359 return 0;
1360 }
1361
1362 #ifdef CONFIG_PM_SLEEP
1363 static int vpif_suspend(struct device *dev)
1364 {
1365 struct common_obj *common;
1366 struct channel_obj *ch;
1367 int i;
1368
1369 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1370 /* Get the pointer to the channel object */
1371 ch = vpif_obj.dev[i];
1372 common = &ch->common[VPIF_VIDEO_INDEX];
1373
1374 if (!vb2_start_streaming_called(&common->buffer_queue))
1375 continue;
1376
1377 mutex_lock(&common->lock);
1378 /* Disable channel */
1379 if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1380 enable_channel2(0);
1381 channel2_intr_enable(0);
1382 }
1383 if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1384 ycmux_mode == 2) {
1385 enable_channel3(0);
1386 channel3_intr_enable(0);
1387 }
1388 mutex_unlock(&common->lock);
1389 }
1390
1391 return 0;
1392 }
1393
1394 static int vpif_resume(struct device *dev)
1395 {
1396
1397 struct common_obj *common;
1398 struct channel_obj *ch;
1399 int i;
1400
1401 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1402 /* Get the pointer to the channel object */
1403 ch = vpif_obj.dev[i];
1404 common = &ch->common[VPIF_VIDEO_INDEX];
1405
1406 if (!vb2_start_streaming_called(&common->buffer_queue))
1407 continue;
1408
1409 mutex_lock(&common->lock);
1410 /* Enable channel */
1411 if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1412 enable_channel2(1);
1413 channel2_intr_enable(1);
1414 }
1415 if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1416 ycmux_mode == 2) {
1417 enable_channel3(1);
1418 channel3_intr_enable(1);
1419 }
1420 mutex_unlock(&common->lock);
1421 }
1422
1423 return 0;
1424 }
1425
1426 #endif
1427
1428 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1429
1430 static __refdata struct platform_driver vpif_driver = {
1431 .driver = {
1432 .name = VPIF_DRIVER_NAME,
1433 .pm = &vpif_pm_ops,
1434 },
1435 .probe = vpif_probe,
1436 .remove = vpif_remove,
1437 };
1438
1439 module_platform_driver(vpif_driver);
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