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Input: xpad - add support for Xbox1 PDP Camo series gamepad
[linux/fpc-iii.git] / drivers / media / platform / davinci / vpif_display.c
blob75b27233ec2f9d8919b12e42b9481a022508ab1d
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
57 struct vpif_disp_buffer *to_vpif_buffer(struct vb2_v4l2_buffer *vb)
58 {
59 return container_of(vb, struct vpif_disp_buffer, vb);
60 }
61
62 /**
63 * vpif_buffer_prepare : callback function for buffer prepare
64 * @vb: ptr to vb2_buffer
65 *
66 * This is the callback function for buffer prepare when vb2_qbuf()
67 * function is called. The buffer is prepared and user space virtual address
68 * or user address is converted into physical address
69 */
70 static int vpif_buffer_prepare(struct vb2_buffer *vb)
71 {
72 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
73 struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
74 struct common_obj *common;
75
76 common = &ch->common[VPIF_VIDEO_INDEX];
77
78 vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
79 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
80 return -EINVAL;
81
82 vbuf->field = common->fmt.fmt.pix.field;
83
84 if (vb->vb2_queue->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) {
85 unsigned long addr = vb2_dma_contig_plane_dma_addr(vb, 0);
86
87 if (!ISALIGNED(addr + common->ytop_off) ||
88 !ISALIGNED(addr + common->ybtm_off) ||
89 !ISALIGNED(addr + common->ctop_off) ||
90 !ISALIGNED(addr + common->cbtm_off)) {
91 vpif_err("buffer offset not aligned to 8 bytes\n");
92 return -EINVAL;
93 }
94 }
95
96 return 0;
97 }
98
99 /**
100 * vpif_buffer_queue_setup : Callback function for buffer setup.
101 * @vq: vb2_queue ptr
102 * @nbuffers: ptr to number of buffers requested by application
103 * @nplanes:: contains number of distinct video planes needed to hold a frame
104 * @sizes[]: contains the size (in bytes) of each plane.
105 * @alloc_devs: ptr to allocation context
106 *
107 * This callback function is called when reqbuf() is called to adjust
108 * the buffer count and buffer size
109 */
110 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
111 unsigned int *nbuffers, unsigned int *nplanes,
112 unsigned int sizes[], struct device *alloc_devs[])
113 {
114 struct channel_obj *ch = vb2_get_drv_priv(vq);
115 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
116 unsigned size = common->fmt.fmt.pix.sizeimage;
117
118 if (*nplanes) {
119 if (sizes[0] < size)
120 return -EINVAL;
121 size = sizes[0];
122 }
123
124 if (vq->num_buffers + *nbuffers < 3)
125 *nbuffers = 3 - vq->num_buffers;
126
127 *nplanes = 1;
128 sizes[0] = size;
129
130 /* Calculate the offset for Y and C data in the buffer */
131 vpif_calculate_offsets(ch);
132
133 return 0;
134 }
135
136 /**
137 * vpif_buffer_queue : Callback function to add buffer to DMA queue
138 * @vb: ptr to vb2_buffer
139 *
140 * This callback fucntion queues the buffer to DMA engine
141 */
142 static void vpif_buffer_queue(struct vb2_buffer *vb)
143 {
144 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
145 struct vpif_disp_buffer *buf = to_vpif_buffer(vbuf);
146 struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
147 struct common_obj *common;
148 unsigned long flags;
149
150 common = &ch->common[VPIF_VIDEO_INDEX];
151
152 /* add the buffer to the DMA queue */
153 spin_lock_irqsave(&common->irqlock, flags);
154 list_add_tail(&buf->list, &common->dma_queue);
155 spin_unlock_irqrestore(&common->irqlock, flags);
156 }
157
158 /**
159 * vpif_start_streaming : Starts the DMA engine for streaming
160 * @vb: ptr to vb2_buffer
161 * @count: number of buffers
162 */
163 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
164 {
165 struct vpif_display_config *vpif_config_data =
166 vpif_dev->platform_data;
167 struct channel_obj *ch = vb2_get_drv_priv(vq);
168 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
169 struct vpif_params *vpif = &ch->vpifparams;
170 struct vpif_disp_buffer *buf, *tmp;
171 unsigned long addr, flags;
172 int ret;
173
174 spin_lock_irqsave(&common->irqlock, flags);
175
176 /* Initialize field_id */
177 ch->field_id = 0;
178
179 /* clock settings */
180 if (vpif_config_data->set_clock) {
181 ret = vpif_config_data->set_clock(ch->vpifparams.std_info.
182 ycmux_mode, ch->vpifparams.std_info.hd_sd);
183 if (ret < 0) {
184 vpif_err("can't set clock\n");
185 goto err;
186 }
187 }
188
189 /* set the parameters and addresses */
190 ret = vpif_set_video_params(vpif, ch->channel_id + 2);
191 if (ret < 0)
192 goto err;
193
194 ycmux_mode = ret;
195 vpif_config_addr(ch, ret);
196 /* Get the next frame from the buffer queue */
197 common->next_frm = common->cur_frm =
198 list_entry(common->dma_queue.next,
199 struct vpif_disp_buffer, list);
200
201 list_del(&common->cur_frm->list);
202 spin_unlock_irqrestore(&common->irqlock, flags);
203
204 addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb.vb2_buf, 0);
205 common->set_addr((addr + common->ytop_off),
206 (addr + common->ybtm_off),
207 (addr + common->ctop_off),
208 (addr + common->cbtm_off));
209
210 /*
211 * Set interrupt for both the fields in VPIF
212 * Register enable channel in VPIF register
213 */
214 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
215 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
216 channel2_intr_assert();
217 channel2_intr_enable(1);
218 enable_channel2(1);
219 if (vpif_config_data->chan_config[VPIF_CHANNEL2_VIDEO].clip_en)
220 channel2_clipping_enable(1);
221 }
222
223 if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) {
224 channel3_intr_assert();
225 channel3_intr_enable(1);
226 enable_channel3(1);
227 if (vpif_config_data->chan_config[VPIF_CHANNEL3_VIDEO].clip_en)
228 channel3_clipping_enable(1);
229 }
230
231 return 0;
232
233 err:
234 list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
235 list_del(&buf->list);
236 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
237 }
238 spin_unlock_irqrestore(&common->irqlock, flags);
239
240 return ret;
241 }
242
243 /**
244 * vpif_stop_streaming : Stop the DMA engine
245 * @vq: ptr to vb2_queue
246 *
247 * This callback stops the DMA engine and any remaining buffers
248 * in the DMA queue are released.
249 */
250 static void vpif_stop_streaming(struct vb2_queue *vq)
251 {
252 struct channel_obj *ch = vb2_get_drv_priv(vq);
253 struct common_obj *common;
254 unsigned long flags;
255
256 common = &ch->common[VPIF_VIDEO_INDEX];
257
258 /* Disable channel */
259 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
260 enable_channel2(0);
261 channel2_intr_enable(0);
262 }
263 if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) {
264 enable_channel3(0);
265 channel3_intr_enable(0);
266 }
267
268 /* release all active buffers */
269 spin_lock_irqsave(&common->irqlock, flags);
270 if (common->cur_frm == common->next_frm) {
271 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
272 VB2_BUF_STATE_ERROR);
273 } else {
274 if (common->cur_frm != NULL)
275 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
276 VB2_BUF_STATE_ERROR);
277 if (common->next_frm != NULL)
278 vb2_buffer_done(&common->next_frm->vb.vb2_buf,
279 VB2_BUF_STATE_ERROR);
280 }
281
282 while (!list_empty(&common->dma_queue)) {
283 common->next_frm = list_entry(common->dma_queue.next,
284 struct vpif_disp_buffer, list);
285 list_del(&common->next_frm->list);
286 vb2_buffer_done(&common->next_frm->vb.vb2_buf,
287 VB2_BUF_STATE_ERROR);
288 }
289 spin_unlock_irqrestore(&common->irqlock, flags);
290 }
291
292 static struct vb2_ops video_qops = {
293 .queue_setup = vpif_buffer_queue_setup,
294 .wait_prepare = vb2_ops_wait_prepare,
295 .wait_finish = vb2_ops_wait_finish,
296 .buf_prepare = vpif_buffer_prepare,
297 .start_streaming = vpif_start_streaming,
298 .stop_streaming = vpif_stop_streaming,
299 .buf_queue = vpif_buffer_queue,
300 };
301
302 static void process_progressive_mode(struct common_obj *common)
303 {
304 unsigned long addr = 0;
305
306 spin_lock(&common->irqlock);
307 /* Get the next buffer from buffer queue */
308 common->next_frm = list_entry(common->dma_queue.next,
309 struct vpif_disp_buffer, list);
310 /* Remove that buffer from the buffer queue */
311 list_del(&common->next_frm->list);
312 spin_unlock(&common->irqlock);
313
314 /* Set top and bottom field addrs in VPIF registers */
315 addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 0);
316 common->set_addr(addr + common->ytop_off,
317 addr + common->ybtm_off,
318 addr + common->ctop_off,
319 addr + common->cbtm_off);
320 }
321
322 static void process_interlaced_mode(int fid, struct common_obj *common)
323 {
324 /* device field id and local field id are in sync */
325 /* If this is even field */
326 if (0 == fid) {
327 if (common->cur_frm == common->next_frm)
328 return;
329
330 /* one frame is displayed If next frame is
331 * available, release cur_frm and move on */
332 /* Copy frame display time */
333 common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
334 /* Change status of the cur_frm */
335 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
336 VB2_BUF_STATE_DONE);
337 /* Make cur_frm pointing to next_frm */
338 common->cur_frm = common->next_frm;
339
340 } else if (1 == fid) { /* odd field */
341 spin_lock(&common->irqlock);
342 if (list_empty(&common->dma_queue)
343 || (common->cur_frm != common->next_frm)) {
344 spin_unlock(&common->irqlock);
345 return;
346 }
347 spin_unlock(&common->irqlock);
348 /* one field is displayed configure the next
349 * frame if it is available else hold on current
350 * frame */
351 /* Get next from the buffer queue */
352 process_progressive_mode(common);
353 }
354 }
355
356 /*
357 * vpif_channel_isr: It changes status of the displayed buffer, takes next
358 * buffer from the queue and sets its address in VPIF registers
359 */
360 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
361 {
362 struct vpif_device *dev = &vpif_obj;
363 struct channel_obj *ch;
364 struct common_obj *common;
365 int fid = -1, i;
366 int channel_id = 0;
367
368 channel_id = *(int *)(dev_id);
369 if (!vpif_intr_status(channel_id + 2))
370 return IRQ_NONE;
371
372 ch = dev->dev[channel_id];
373 for (i = 0; i < VPIF_NUMOBJECTS; i++) {
374 common = &ch->common[i];
375 /* If streaming is started in this channel */
376
377 if (1 == ch->vpifparams.std_info.frm_fmt) {
378 spin_lock(&common->irqlock);
379 if (list_empty(&common->dma_queue)) {
380 spin_unlock(&common->irqlock);
381 continue;
382 }
383 spin_unlock(&common->irqlock);
384
385 /* Progressive mode */
386 if (!channel_first_int[i][channel_id]) {
387 /* Mark status of the cur_frm to
388 * done and unlock semaphore on it */
389 common->cur_frm->vb.vb2_buf.timestamp =
390 ktime_get_ns();
391 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
392 VB2_BUF_STATE_DONE);
393 /* Make cur_frm pointing to next_frm */
394 common->cur_frm = common->next_frm;
395 }
396
397 channel_first_int[i][channel_id] = 0;
398 process_progressive_mode(common);
399 } else {
400 /* Interlaced mode */
401 /* If it is first interrupt, ignore it */
402
403 if (channel_first_int[i][channel_id]) {
404 channel_first_int[i][channel_id] = 0;
405 continue;
406 }
407
408 if (0 == i) {
409 ch->field_id ^= 1;
410 /* Get field id from VPIF registers */
411 fid = vpif_channel_getfid(ch->channel_id + 2);
412 /* If fid does not match with stored field id */
413 if (fid != ch->field_id) {
414 /* Make them in sync */
415 if (0 == fid)
416 ch->field_id = fid;
417
418 return IRQ_HANDLED;
419 }
420 }
421 process_interlaced_mode(fid, common);
422 }
423 }
424
425 return IRQ_HANDLED;
426 }
427
428 static int vpif_update_std_info(struct channel_obj *ch)
429 {
430 struct video_obj *vid_ch = &ch->video;
431 struct vpif_params *vpifparams = &ch->vpifparams;
432 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
433 const struct vpif_channel_config_params *config;
434
435 int i;
436
437 for (i = 0; i < vpif_ch_params_count; i++) {
438 config = &vpif_ch_params[i];
439 if (config->hd_sd == 0) {
440 vpif_dbg(2, debug, "SD format\n");
441 if (config->stdid & vid_ch->stdid) {
442 memcpy(std_info, config, sizeof(*config));
443 break;
444 }
445 }
446 }
447
448 if (i == vpif_ch_params_count) {
449 vpif_dbg(1, debug, "Format not found\n");
450 return -EINVAL;
451 }
452
453 return 0;
454 }
455
456 static int vpif_update_resolution(struct channel_obj *ch)
457 {
458 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
459 struct video_obj *vid_ch = &ch->video;
460 struct vpif_params *vpifparams = &ch->vpifparams;
461 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
462
463 if (!vid_ch->stdid && !vid_ch->dv_timings.bt.height)
464 return -EINVAL;
465
466 if (vid_ch->stdid) {
467 if (vpif_update_std_info(ch))
468 return -EINVAL;
469 }
470
471 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
472 common->fmt.fmt.pix.width = std_info->width;
473 common->fmt.fmt.pix.height = std_info->height;
474 vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n",
475 common->fmt.fmt.pix.width, common->fmt.fmt.pix.height);
476
477 /* Set height and width paramateres */
478 common->height = std_info->height;
479 common->width = std_info->width;
480 common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
481
482 if (vid_ch->stdid)
483 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
484 else
485 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
486
487 if (ch->vpifparams.std_info.frm_fmt)
488 common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
489 else
490 common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
491
492 return 0;
493 }
494
495 /*
496 * vpif_calculate_offsets: This function calculates buffers offset for Y and C
497 * in the top and bottom field
498 */
499 static void vpif_calculate_offsets(struct channel_obj *ch)
500 {
501 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
502 struct vpif_params *vpifparams = &ch->vpifparams;
503 enum v4l2_field field = common->fmt.fmt.pix.field;
504 struct video_obj *vid_ch = &ch->video;
505 unsigned int hpitch, sizeimage;
506
507 if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) {
508 if (ch->vpifparams.std_info.frm_fmt)
509 vid_ch->buf_field = V4L2_FIELD_NONE;
510 else
511 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
512 } else {
513 vid_ch->buf_field = common->fmt.fmt.pix.field;
514 }
515
516 sizeimage = common->fmt.fmt.pix.sizeimage;
517
518 hpitch = common->fmt.fmt.pix.bytesperline;
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
652 return 0;
653 }
654
655 static int vpif_s_fmt_vid_out(struct file *file, void *priv,
656 struct v4l2_format *fmt)
657 {
658 struct video_device *vdev = video_devdata(file);
659 struct channel_obj *ch = video_get_drvdata(vdev);
660 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
661 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
662 int ret;
663
664 if (vb2_is_busy(&common->buffer_queue))
665 return -EBUSY;
666
667 ret = vpif_try_fmt_vid_out(file, priv, fmt);
668 if (ret)
669 return ret;
670
671 /* store the pix format in the channel object */
672 common->fmt.fmt.pix = *pixfmt;
673
674 /* store the format in the channel object */
675 common->fmt = *fmt;
676 return 0;
677 }
678
679 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
680 {
681 struct vpif_display_config *config = vpif_dev->platform_data;
682 struct video_device *vdev = video_devdata(file);
683 struct channel_obj *ch = video_get_drvdata(vdev);
684 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
685 struct vpif_display_chan_config *chan_cfg;
686 struct v4l2_output output;
687 int ret;
688
689 if (config->chan_config[ch->channel_id].outputs == NULL)
690 return -ENODATA;
691
692 chan_cfg = &config->chan_config[ch->channel_id];
693 output = chan_cfg->outputs[ch->output_idx].output;
694 if (output.capabilities != V4L2_OUT_CAP_STD)
695 return -ENODATA;
696
697 if (vb2_is_busy(&common->buffer_queue))
698 return -EBUSY;
699
700
701 if (!(std_id & VPIF_V4L2_STD))
702 return -EINVAL;
703
704 /* Call encoder subdevice function to set the standard */
705 ch->video.stdid = std_id;
706 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
707 /* Get the information about the standard */
708 if (vpif_update_resolution(ch))
709 return -EINVAL;
710
711 common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width;
712
713 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
714 s_std_output, std_id);
715 if (ret < 0) {
716 vpif_err("Failed to set output standard\n");
717 return ret;
718 }
719
720 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
721 s_std, std_id);
722 if (ret < 0)
723 vpif_err("Failed to set standard for sub devices\n");
724 return ret;
725 }
726
727 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
728 {
729 struct vpif_display_config *config = vpif_dev->platform_data;
730 struct video_device *vdev = video_devdata(file);
731 struct channel_obj *ch = video_get_drvdata(vdev);
732 struct vpif_display_chan_config *chan_cfg;
733 struct v4l2_output output;
734
735 if (config->chan_config[ch->channel_id].outputs == NULL)
736 return -ENODATA;
737
738 chan_cfg = &config->chan_config[ch->channel_id];
739 output = chan_cfg->outputs[ch->output_idx].output;
740 if (output.capabilities != V4L2_OUT_CAP_STD)
741 return -ENODATA;
742
743 *std = ch->video.stdid;
744 return 0;
745 }
746
747 static int vpif_enum_output(struct file *file, void *fh,
748 struct v4l2_output *output)
749 {
750
751 struct vpif_display_config *config = vpif_dev->platform_data;
752 struct video_device *vdev = video_devdata(file);
753 struct channel_obj *ch = video_get_drvdata(vdev);
754 struct vpif_display_chan_config *chan_cfg;
755
756 chan_cfg = &config->chan_config[ch->channel_id];
757 if (output->index >= chan_cfg->output_count) {
758 vpif_dbg(1, debug, "Invalid output index\n");
759 return -EINVAL;
760 }
761
762 *output = chan_cfg->outputs[output->index].output;
763 return 0;
764 }
765
766 /**
767 * vpif_output_to_subdev() - Maps output to sub device
768 * @vpif_cfg - global config ptr
769 * @chan_cfg - channel config ptr
770 * @index - Given output index from application
771 *
772 * lookup the sub device information for a given output index.
773 * we report all the output to application. output table also
774 * has sub device name for the each output
775 */
776 static int
777 vpif_output_to_subdev(struct vpif_display_config *vpif_cfg,
778 struct vpif_display_chan_config *chan_cfg, int index)
779 {
780 struct vpif_subdev_info *subdev_info;
781 const char *subdev_name;
782 int i;
783
784 vpif_dbg(2, debug, "vpif_output_to_subdev\n");
785
786 if (chan_cfg->outputs == NULL)
787 return -1;
788
789 subdev_name = chan_cfg->outputs[index].subdev_name;
790 if (subdev_name == NULL)
791 return -1;
792
793 /* loop through the sub device list to get the sub device info */
794 for (i = 0; i < vpif_cfg->subdev_count; i++) {
795 subdev_info = &vpif_cfg->subdevinfo[i];
796 if (!strcmp(subdev_info->name, subdev_name))
797 return i;
798 }
799 return -1;
800 }
801
802 /**
803 * vpif_set_output() - Select an output
804 * @vpif_cfg - global config ptr
805 * @ch - channel
806 * @index - Given output index from application
807 *
808 * Select the given output.
809 */
810 static int vpif_set_output(struct vpif_display_config *vpif_cfg,
811 struct channel_obj *ch, int index)
812 {
813 struct vpif_display_chan_config *chan_cfg =
814 &vpif_cfg->chan_config[ch->channel_id];
815 struct v4l2_subdev *sd = NULL;
816 u32 input = 0, output = 0;
817 int sd_index;
818 int ret;
819
820 sd_index = vpif_output_to_subdev(vpif_cfg, chan_cfg, index);
821 if (sd_index >= 0)
822 sd = vpif_obj.sd[sd_index];
823
824 if (sd) {
825 input = chan_cfg->outputs[index].input_route;
826 output = chan_cfg->outputs[index].output_route;
827 ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0);
828 if (ret < 0 && ret != -ENOIOCTLCMD) {
829 vpif_err("Failed to set output\n");
830 return ret;
831 }
832
833 }
834 ch->output_idx = index;
835 ch->sd = sd;
836 if (chan_cfg->outputs != NULL)
837 /* update tvnorms from the sub device output info */
838 ch->video_dev.tvnorms = chan_cfg->outputs[index].output.std;
839 return 0;
840 }
841
842 static int vpif_s_output(struct file *file, void *priv, unsigned int i)
843 {
844 struct vpif_display_config *config = vpif_dev->platform_data;
845 struct video_device *vdev = video_devdata(file);
846 struct channel_obj *ch = video_get_drvdata(vdev);
847 struct vpif_display_chan_config *chan_cfg;
848 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
849
850 if (vb2_is_busy(&common->buffer_queue))
851 return -EBUSY;
852
853 chan_cfg = &config->chan_config[ch->channel_id];
854
855 if (i >= chan_cfg->output_count)
856 return -EINVAL;
857
858 return vpif_set_output(config, ch, i);
859 }
860
861 static int vpif_g_output(struct file *file, void *priv, unsigned int *i)
862 {
863 struct video_device *vdev = video_devdata(file);
864 struct channel_obj *ch = video_get_drvdata(vdev);
865
866 *i = ch->output_idx;
867
868 return 0;
869 }
870
871 /**
872 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
873 * @file: file ptr
874 * @priv: file handle
875 * @timings: input timings
876 */
877 static int
878 vpif_enum_dv_timings(struct file *file, void *priv,
879 struct v4l2_enum_dv_timings *timings)
880 {
881 struct vpif_display_config *config = vpif_dev->platform_data;
882 struct video_device *vdev = video_devdata(file);
883 struct channel_obj *ch = video_get_drvdata(vdev);
884 struct vpif_display_chan_config *chan_cfg;
885 struct v4l2_output output;
886 int ret;
887
888 if (config->chan_config[ch->channel_id].outputs == NULL)
889 return -ENODATA;
890
891 chan_cfg = &config->chan_config[ch->channel_id];
892 output = chan_cfg->outputs[ch->output_idx].output;
893 if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
894 return -ENODATA;
895
896 timings->pad = 0;
897
898 ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
899 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
900 return -EINVAL;
901 return ret;
902 }
903
904 /**
905 * vpif_s_dv_timings() - S_DV_TIMINGS handler
906 * @file: file ptr
907 * @priv: file handle
908 * @timings: digital video timings
909 */
910 static int vpif_s_dv_timings(struct file *file, void *priv,
911 struct v4l2_dv_timings *timings)
912 {
913 struct vpif_display_config *config = vpif_dev->platform_data;
914 struct video_device *vdev = video_devdata(file);
915 struct channel_obj *ch = video_get_drvdata(vdev);
916 struct vpif_params *vpifparams = &ch->vpifparams;
917 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
918 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
919 struct video_obj *vid_ch = &ch->video;
920 struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
921 struct vpif_display_chan_config *chan_cfg;
922 struct v4l2_output output;
923 int ret;
924
925 if (config->chan_config[ch->channel_id].outputs == NULL)
926 return -ENODATA;
927
928 chan_cfg = &config->chan_config[ch->channel_id];
929 output = chan_cfg->outputs[ch->output_idx].output;
930 if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
931 return -ENODATA;
932
933 if (vb2_is_busy(&common->buffer_queue))
934 return -EBUSY;
935
936 if (timings->type != V4L2_DV_BT_656_1120) {
937 vpif_dbg(2, debug, "Timing type not defined\n");
938 return -EINVAL;
939 }
940
941 /* Configure subdevice timings, if any */
942 ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
943 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
944 ret = 0;
945 if (ret < 0) {
946 vpif_dbg(2, debug, "Error setting custom DV timings\n");
947 return ret;
948 }
949
950 if (!(timings->bt.width && timings->bt.height &&
951 (timings->bt.hbackporch ||
952 timings->bt.hfrontporch ||
953 timings->bt.hsync) &&
954 timings->bt.vfrontporch &&
955 (timings->bt.vbackporch ||
956 timings->bt.vsync))) {
957 vpif_dbg(2, debug, "Timings for width, height, "
958 "horizontal back porch, horizontal sync, "
959 "horizontal front porch, vertical back porch, "
960 "vertical sync and vertical back porch "
961 "must be defined\n");
962 return -EINVAL;
963 }
964
965 vid_ch->dv_timings = *timings;
966
967 /* Configure video port timings */
968
969 std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
970 std_info->sav2eav = bt->width;
971
972 std_info->l1 = 1;
973 std_info->l3 = bt->vsync + bt->vbackporch + 1;
974
975 std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
976 if (bt->interlaced) {
977 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
978 std_info->l5 = std_info->vsize/2 -
979 (bt->vfrontporch - 1);
980 std_info->l7 = std_info->vsize/2 + 1;
981 std_info->l9 = std_info->l7 + bt->il_vsync +
982 bt->il_vbackporch + 1;
983 std_info->l11 = std_info->vsize -
984 (bt->il_vfrontporch - 1);
985 } else {
986 vpif_dbg(2, debug, "Required timing values for "
987 "interlaced BT format missing\n");
988 return -EINVAL;
989 }
990 } else {
991 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
992 }
993 strncpy(std_info->name, "Custom timings BT656/1120",
994 VPIF_MAX_NAME);
995 std_info->width = bt->width;
996 std_info->height = bt->height;
997 std_info->frm_fmt = bt->interlaced ? 0 : 1;
998 std_info->ycmux_mode = 0;
999 std_info->capture_format = 0;
1000 std_info->vbi_supported = 0;
1001 std_info->hd_sd = 1;
1002 std_info->stdid = 0;
1003 vid_ch->stdid = 0;
1004
1005 return 0;
1006 }
1007
1008 /**
1009 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1010 * @file: file ptr
1011 * @priv: file handle
1012 * @timings: digital video timings
1013 */
1014 static int vpif_g_dv_timings(struct file *file, void *priv,
1015 struct v4l2_dv_timings *timings)
1016 {
1017 struct vpif_display_config *config = vpif_dev->platform_data;
1018 struct video_device *vdev = video_devdata(file);
1019 struct channel_obj *ch = video_get_drvdata(vdev);
1020 struct vpif_display_chan_config *chan_cfg;
1021 struct video_obj *vid_ch = &ch->video;
1022 struct v4l2_output output;
1023
1024 if (config->chan_config[ch->channel_id].outputs == NULL)
1025 goto error;
1026
1027 chan_cfg = &config->chan_config[ch->channel_id];
1028 output = chan_cfg->outputs[ch->output_idx].output;
1029
1030 if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
1031 goto error;
1032
1033 *timings = vid_ch->dv_timings;
1034
1035 return 0;
1036 error:
1037 return -ENODATA;
1038 }
1039
1040 /*
1041 * vpif_log_status() - Status information
1042 * @file: file ptr
1043 * @priv: file handle
1044 *
1045 * Returns zero.
1046 */
1047 static int vpif_log_status(struct file *filep, void *priv)
1048 {
1049 /* status for sub devices */
1050 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1051
1052 return 0;
1053 }
1054
1055 /* vpif display ioctl operations */
1056 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1057 .vidioc_querycap = vpif_querycap,
1058 .vidioc_enum_fmt_vid_out = vpif_enum_fmt_vid_out,
1059 .vidioc_g_fmt_vid_out = vpif_g_fmt_vid_out,
1060 .vidioc_s_fmt_vid_out = vpif_s_fmt_vid_out,
1061 .vidioc_try_fmt_vid_out = vpif_try_fmt_vid_out,
1062
1063 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1064 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1065 .vidioc_querybuf = vb2_ioctl_querybuf,
1066 .vidioc_qbuf = vb2_ioctl_qbuf,
1067 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1068 .vidioc_expbuf = vb2_ioctl_expbuf,
1069 .vidioc_streamon = vb2_ioctl_streamon,
1070 .vidioc_streamoff = vb2_ioctl_streamoff,
1071
1072 .vidioc_s_std = vpif_s_std,
1073 .vidioc_g_std = vpif_g_std,
1074
1075 .vidioc_enum_output = vpif_enum_output,
1076 .vidioc_s_output = vpif_s_output,
1077 .vidioc_g_output = vpif_g_output,
1078
1079 .vidioc_enum_dv_timings = vpif_enum_dv_timings,
1080 .vidioc_s_dv_timings = vpif_s_dv_timings,
1081 .vidioc_g_dv_timings = vpif_g_dv_timings,
1082
1083 .vidioc_log_status = vpif_log_status,
1084 };
1085
1086 static const struct v4l2_file_operations vpif_fops = {
1087 .owner = THIS_MODULE,
1088 .open = v4l2_fh_open,
1089 .release = vb2_fop_release,
1090 .unlocked_ioctl = video_ioctl2,
1091 .mmap = vb2_fop_mmap,
1092 .poll = vb2_fop_poll
1093 };
1094
1095 /*Configure the channels, buffer sizei, request irq */
1096 static int initialize_vpif(void)
1097 {
1098 int free_channel_objects_index;
1099 int err, i, j;
1100
1101 /* Allocate memory for six channel objects */
1102 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1103 vpif_obj.dev[i] =
1104 kzalloc(sizeof(struct channel_obj), GFP_KERNEL);
1105 /* If memory allocation fails, return error */
1106 if (!vpif_obj.dev[i]) {
1107 free_channel_objects_index = i;
1108 err = -ENOMEM;
1109 goto vpif_init_free_channel_objects;
1110 }
1111 }
1112
1113 return 0;
1114
1115 vpif_init_free_channel_objects:
1116 for (j = 0; j < free_channel_objects_index; j++)
1117 kfree(vpif_obj.dev[j]);
1118 return err;
1119 }
1120
1121 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1122 struct v4l2_subdev *subdev,
1123 struct v4l2_async_subdev *asd)
1124 {
1125 int i;
1126
1127 for (i = 0; i < vpif_obj.config->subdev_count; i++)
1128 if (!strcmp(vpif_obj.config->subdevinfo[i].name,
1129 subdev->name)) {
1130 vpif_obj.sd[i] = subdev;
1131 vpif_obj.sd[i]->grp_id = 1 << i;
1132 return 0;
1133 }
1134
1135 return -EINVAL;
1136 }
1137
1138 static int vpif_probe_complete(void)
1139 {
1140 struct common_obj *common;
1141 struct video_device *vdev;
1142 struct channel_obj *ch;
1143 struct vb2_queue *q;
1144 int j, err, k;
1145
1146 for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
1147 ch = vpif_obj.dev[j];
1148 /* Initialize field of the channel objects */
1149 for (k = 0; k < VPIF_NUMOBJECTS; k++) {
1150 common = &ch->common[k];
1151 spin_lock_init(&common->irqlock);
1152 mutex_init(&common->lock);
1153 common->set_addr = NULL;
1154 common->ytop_off = 0;
1155 common->ybtm_off = 0;
1156 common->ctop_off = 0;
1157 common->cbtm_off = 0;
1158 common->cur_frm = NULL;
1159 common->next_frm = NULL;
1160 memset(&common->fmt, 0, sizeof(common->fmt));
1161 }
1162 ch->initialized = 0;
1163 if (vpif_obj.config->subdev_count)
1164 ch->sd = vpif_obj.sd[0];
1165 ch->channel_id = j;
1166
1167 memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
1168
1169 ch->common[VPIF_VIDEO_INDEX].fmt.type =
1170 V4L2_BUF_TYPE_VIDEO_OUTPUT;
1171
1172 /* select output 0 */
1173 err = vpif_set_output(vpif_obj.config, ch, 0);
1174 if (err)
1175 goto probe_out;
1176
1177 /* set initial format */
1178 ch->video.stdid = V4L2_STD_525_60;
1179 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1180 vpif_update_resolution(ch);
1181
1182 /* Initialize vb2 queue */
1183 q = &common->buffer_queue;
1184 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1185 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1186 q->drv_priv = ch;
1187 q->ops = &video_qops;
1188 q->mem_ops = &vb2_dma_contig_memops;
1189 q->buf_struct_size = sizeof(struct vpif_disp_buffer);
1190 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1191 q->min_buffers_needed = 1;
1192 q->lock = &common->lock;
1193 q->dev = vpif_dev;
1194 err = vb2_queue_init(q);
1195 if (err) {
1196 vpif_err("vpif_display: vb2_queue_init() failed\n");
1197 goto probe_out;
1198 }
1199
1200 INIT_LIST_HEAD(&common->dma_queue);
1201
1202 /* register video device */
1203 vpif_dbg(1, debug, "channel=%p,channel->video_dev=%p\n",
1204 ch, &ch->video_dev);
1205
1206 /* Initialize the video_device structure */
1207 vdev = &ch->video_dev;
1208 strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1209 vdev->release = video_device_release_empty;
1210 vdev->fops = &vpif_fops;
1211 vdev->ioctl_ops = &vpif_ioctl_ops;
1212 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1213 vdev->vfl_dir = VFL_DIR_TX;
1214 vdev->queue = q;
1215 vdev->lock = &common->lock;
1216 video_set_drvdata(&ch->video_dev, ch);
1217 err = video_register_device(vdev, VFL_TYPE_GRABBER,
1218 (j ? 3 : 2));
1219 if (err < 0)
1220 goto probe_out;
1221 }
1222
1223 return 0;
1224
1225 probe_out:
1226 for (k = 0; k < j; k++) {
1227 ch = vpif_obj.dev[k];
1228 common = &ch->common[k];
1229 video_unregister_device(&ch->video_dev);
1230 }
1231 return err;
1232 }
1233
1234 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1235 {
1236 return vpif_probe_complete();
1237 }
1238
1239 /*
1240 * vpif_probe: This function creates device entries by register itself to the
1241 * V4L2 driver and initializes fields of each channel objects
1242 */
1243 static __init int vpif_probe(struct platform_device *pdev)
1244 {
1245 struct vpif_subdev_info *subdevdata;
1246 struct i2c_adapter *i2c_adap;
1247 struct resource *res;
1248 int subdev_count;
1249 int res_idx = 0;
1250 int i, err;
1251
1252 vpif_dev = &pdev->dev;
1253 err = initialize_vpif();
1254
1255 if (err) {
1256 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1257 return err;
1258 }
1259
1260 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1261 if (err) {
1262 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1263 return err;
1264 }
1265
1266 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1267 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1268 IRQF_SHARED, VPIF_DRIVER_NAME,
1269 (void *)(&vpif_obj.dev[res_idx]->
1270 channel_id));
1271 if (err) {
1272 err = -EINVAL;
1273 vpif_err("VPIF IRQ request failed\n");
1274 goto vpif_unregister;
1275 }
1276 res_idx++;
1277 }
1278
1279 vpif_obj.config = pdev->dev.platform_data;
1280 subdev_count = vpif_obj.config->subdev_count;
1281 subdevdata = vpif_obj.config->subdevinfo;
1282 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1283 GFP_KERNEL);
1284 if (vpif_obj.sd == NULL) {
1285 vpif_err("unable to allocate memory for subdevice pointers\n");
1286 err = -ENOMEM;
1287 goto vpif_unregister;
1288 }
1289
1290 if (!vpif_obj.config->asd_sizes) {
1291 i2c_adap = i2c_get_adapter(1);
1292 for (i = 0; i < subdev_count; i++) {
1293 vpif_obj.sd[i] =
1294 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1295 i2c_adap,
1296 &subdevdata[i].
1297 board_info,
1298 NULL);
1299 if (!vpif_obj.sd[i]) {
1300 vpif_err("Error registering v4l2 subdevice\n");
1301 err = -ENODEV;
1302 goto probe_subdev_out;
1303 }
1304
1305 if (vpif_obj.sd[i])
1306 vpif_obj.sd[i]->grp_id = 1 << i;
1307 }
1308 vpif_probe_complete();
1309 } else {
1310 vpif_obj.notifier.subdevs = vpif_obj.config->asd;
1311 vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
1312 vpif_obj.notifier.bound = vpif_async_bound;
1313 vpif_obj.notifier.complete = vpif_async_complete;
1314 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1315 &vpif_obj.notifier);
1316 if (err) {
1317 vpif_err("Error registering async notifier\n");
1318 err = -EINVAL;
1319 goto probe_subdev_out;
1320 }
1321 }
1322
1323 return 0;
1324
1325 probe_subdev_out:
1326 kfree(vpif_obj.sd);
1327 vpif_unregister:
1328 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1329
1330 return err;
1331 }
1332
1333 /*
1334 * vpif_remove: It un-register channels from V4L2 driver
1335 */
1336 static int vpif_remove(struct platform_device *device)
1337 {
1338 struct common_obj *common;
1339 struct channel_obj *ch;
1340 int i;
1341
1342 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1343
1344 kfree(vpif_obj.sd);
1345 /* un-register device */
1346 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1347 /* Get the pointer to the channel object */
1348 ch = vpif_obj.dev[i];
1349 common = &ch->common[VPIF_VIDEO_INDEX];
1350 /* Unregister video device */
1351 video_unregister_device(&ch->video_dev);
1352 kfree(vpif_obj.dev[i]);
1353 }
1354
1355 return 0;
1356 }
1357
1358 #ifdef CONFIG_PM_SLEEP
1359 static int vpif_suspend(struct device *dev)
1360 {
1361 struct common_obj *common;
1362 struct channel_obj *ch;
1363 int i;
1364
1365 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1366 /* Get the pointer to the channel object */
1367 ch = vpif_obj.dev[i];
1368 common = &ch->common[VPIF_VIDEO_INDEX];
1369
1370 if (!vb2_start_streaming_called(&common->buffer_queue))
1371 continue;
1372
1373 mutex_lock(&common->lock);
1374 /* Disable channel */
1375 if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1376 enable_channel2(0);
1377 channel2_intr_enable(0);
1378 }
1379 if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1380 ycmux_mode == 2) {
1381 enable_channel3(0);
1382 channel3_intr_enable(0);
1383 }
1384 mutex_unlock(&common->lock);
1385 }
1386
1387 return 0;
1388 }
1389
1390 static int vpif_resume(struct device *dev)
1391 {
1392
1393 struct common_obj *common;
1394 struct channel_obj *ch;
1395 int i;
1396
1397 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1398 /* Get the pointer to the channel object */
1399 ch = vpif_obj.dev[i];
1400 common = &ch->common[VPIF_VIDEO_INDEX];
1401
1402 if (!vb2_start_streaming_called(&common->buffer_queue))
1403 continue;
1404
1405 mutex_lock(&common->lock);
1406 /* Enable channel */
1407 if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1408 enable_channel2(1);
1409 channel2_intr_enable(1);
1410 }
1411 if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1412 ycmux_mode == 2) {
1413 enable_channel3(1);
1414 channel3_intr_enable(1);
1415 }
1416 mutex_unlock(&common->lock);
1417 }
1418
1419 return 0;
1420 }
1421
1422 #endif
1423
1424 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1425
1426 static __refdata struct platform_driver vpif_driver = {
1427 .driver = {
1428 .name = VPIF_DRIVER_NAME,
1429 .pm = &vpif_pm_ops,
1430 },
1431 .probe = vpif_probe,
1432 .remove = vpif_remove,
1433 };
1434
1435 module_platform_driver(vpif_driver);
Linux with added FPC-III support