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[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 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation version 2.
10 *
11 * This program is distributed .as is. WITHOUT ANY WARRANTY of any
12 * kind, whether express or implied; without even the implied warranty
13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/module.h>
20 #include <linux/errno.h>
21 #include <linux/fs.h>
22 #include <linux/mm.h>
23 #include <linux/interrupt.h>
24 #include <linux/workqueue.h>
25 #include <linux/string.h>
26 #include <linux/videodev2.h>
27 #include <linux/wait.h>
28 #include <linux/time.h>
29 #include <linux/i2c.h>
30 #include <linux/platform_device.h>
31 #include <linux/io.h>
32 #include <linux/slab.h>
33
34 #include <asm/irq.h>
35 #include <asm/page.h>
36
37 #include <media/adv7343.h>
38 #include <media/v4l2-device.h>
39 #include <media/v4l2-ioctl.h>
40 #include <media/v4l2-chip-ident.h>
41
42 #include "vpif_display.h"
43 #include "vpif.h"
44
45 MODULE_DESCRIPTION("TI DaVinci VPIF Display driver");
46 MODULE_LICENSE("GPL");
47 MODULE_VERSION(VPIF_DISPLAY_VERSION);
48
49 #define VPIF_V4L2_STD (V4L2_STD_525_60 | V4L2_STD_625_50)
50
51 #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
52 #define vpif_dbg(level, debug, fmt, arg...) \
53 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
54
55 static int debug = 1;
56 static u32 ch2_numbuffers = 3;
57 static u32 ch3_numbuffers = 3;
58 static u32 ch2_bufsize = 1920 * 1080 * 2;
59 static u32 ch3_bufsize = 720 * 576 * 2;
60
61 module_param(debug, int, 0644);
62 module_param(ch2_numbuffers, uint, S_IRUGO);
63 module_param(ch3_numbuffers, uint, S_IRUGO);
64 module_param(ch2_bufsize, uint, S_IRUGO);
65 module_param(ch3_bufsize, uint, S_IRUGO);
66
67 MODULE_PARM_DESC(debug, "Debug level 0-1");
68 MODULE_PARM_DESC(ch2_numbuffers, "Channel2 buffer count (default:3)");
69 MODULE_PARM_DESC(ch3_numbuffers, "Channel3 buffer count (default:3)");
70 MODULE_PARM_DESC(ch2_bufsize, "Channel2 buffer size (default:1920 x 1080 x 2)");
71 MODULE_PARM_DESC(ch3_bufsize, "Channel3 buffer size (default:720 x 576 x 2)");
72
73 static struct vpif_config_params config_params = {
74 .min_numbuffers = 3,
75 .numbuffers[0] = 3,
76 .numbuffers[1] = 3,
77 .min_bufsize[0] = 720 * 480 * 2,
78 .min_bufsize[1] = 720 * 480 * 2,
79 .channel_bufsize[0] = 1920 * 1080 * 2,
80 .channel_bufsize[1] = 720 * 576 * 2,
81 };
82
83 static struct vpif_device vpif_obj = { {NULL} };
84 static struct device *vpif_dev;
85 static void vpif_calculate_offsets(struct channel_obj *ch);
86 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
87
88 /*
89 * buffer_prepare: This is the callback function called from vb2_qbuf()
90 * function the buffer is prepared and user space virtual address is converted
91 * into physical address
92 */
93 static int vpif_buffer_prepare(struct vb2_buffer *vb)
94 {
95 struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
96 struct vb2_queue *q = vb->vb2_queue;
97 struct common_obj *common;
98 unsigned long addr;
99
100 common = &fh->channel->common[VPIF_VIDEO_INDEX];
101 if (vb->state != VB2_BUF_STATE_ACTIVE &&
102 vb->state != VB2_BUF_STATE_PREPARED) {
103 vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
104 if (vb2_plane_vaddr(vb, 0) &&
105 vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
106 goto buf_align_exit;
107
108 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
109 if (q->streaming &&
110 (V4L2_BUF_TYPE_SLICED_VBI_OUTPUT != q->type)) {
111 if (!ISALIGNED(addr + common->ytop_off) ||
112 !ISALIGNED(addr + common->ybtm_off) ||
113 !ISALIGNED(addr + common->ctop_off) ||
114 !ISALIGNED(addr + common->cbtm_off))
115 goto buf_align_exit;
116 }
117 }
118 return 0;
119
120 buf_align_exit:
121 vpif_err("buffer offset not aligned to 8 bytes\n");
122 return -EINVAL;
123 }
124
125 /*
126 * vpif_buffer_queue_setup: This function allocates memory for the buffers
127 */
128 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
129 const struct v4l2_format *fmt,
130 unsigned int *nbuffers, unsigned int *nplanes,
131 unsigned int sizes[], void *alloc_ctxs[])
132 {
133 struct vpif_fh *fh = vb2_get_drv_priv(vq);
134 struct channel_obj *ch = fh->channel;
135 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
136 unsigned long size;
137
138 if (V4L2_MEMORY_MMAP == common->memory) {
139 size = config_params.channel_bufsize[ch->channel_id];
140 /*
141 * Checking if the buffer size exceeds the available buffer
142 * ycmux_mode = 0 means 1 channel mode HD and
143 * ycmux_mode = 1 means 2 channels mode SD
144 */
145 if (ch->vpifparams.std_info.ycmux_mode == 0) {
146 if (config_params.video_limit[ch->channel_id])
147 while (size * *nbuffers >
148 (config_params.video_limit[0]
149 + config_params.video_limit[1]))
150 (*nbuffers)--;
151 } else {
152 if (config_params.video_limit[ch->channel_id])
153 while (size * *nbuffers >
154 config_params.video_limit[ch->channel_id])
155 (*nbuffers)--;
156 }
157 } else {
158 size = common->fmt.fmt.pix.sizeimage;
159 }
160
161 if (*nbuffers < config_params.min_numbuffers)
162 *nbuffers = config_params.min_numbuffers;
163
164 *nplanes = 1;
165 sizes[0] = size;
166 alloc_ctxs[0] = common->alloc_ctx;
167 return 0;
168 }
169
170 /*
171 * vpif_buffer_queue: This function adds the buffer to DMA queue
172 */
173 static void vpif_buffer_queue(struct vb2_buffer *vb)
174 {
175 struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
176 struct vpif_disp_buffer *buf = container_of(vb,
177 struct vpif_disp_buffer, vb);
178 struct channel_obj *ch = fh->channel;
179 struct common_obj *common;
180
181 common = &ch->common[VPIF_VIDEO_INDEX];
182
183 /* add the buffer to the DMA queue */
184 list_add_tail(&buf->list, &common->dma_queue);
185 }
186
187 /*
188 * vpif_buf_cleanup: This function is called from the videobuf2 layer to
189 * free memory allocated to the buffers
190 */
191 static void vpif_buf_cleanup(struct vb2_buffer *vb)
192 {
193 struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
194 struct vpif_disp_buffer *buf = container_of(vb,
195 struct vpif_disp_buffer, vb);
196 struct channel_obj *ch = fh->channel;
197 struct common_obj *common;
198 unsigned long flags;
199
200 common = &ch->common[VPIF_VIDEO_INDEX];
201
202 spin_lock_irqsave(&common->irqlock, flags);
203 if (vb->state == VB2_BUF_STATE_ACTIVE)
204 list_del_init(&buf->list);
205 spin_unlock_irqrestore(&common->irqlock, flags);
206 }
207
208 static void vpif_wait_prepare(struct vb2_queue *vq)
209 {
210 struct vpif_fh *fh = vb2_get_drv_priv(vq);
211 struct channel_obj *ch = fh->channel;
212 struct common_obj *common;
213
214 common = &ch->common[VPIF_VIDEO_INDEX];
215 mutex_unlock(&common->lock);
216 }
217
218 static void vpif_wait_finish(struct vb2_queue *vq)
219 {
220 struct vpif_fh *fh = vb2_get_drv_priv(vq);
221 struct channel_obj *ch = fh->channel;
222 struct common_obj *common;
223
224 common = &ch->common[VPIF_VIDEO_INDEX];
225 mutex_lock(&common->lock);
226 }
227
228 static int vpif_buffer_init(struct vb2_buffer *vb)
229 {
230 struct vpif_disp_buffer *buf = container_of(vb,
231 struct vpif_disp_buffer, vb);
232
233 INIT_LIST_HEAD(&buf->list);
234
235 return 0;
236 }
237
238 static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} };
239
240 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
241 {
242 struct vpif_display_config *vpif_config_data =
243 vpif_dev->platform_data;
244 struct vpif_fh *fh = vb2_get_drv_priv(vq);
245 struct channel_obj *ch = fh->channel;
246 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
247 struct vpif_params *vpif = &ch->vpifparams;
248 unsigned long addr = 0;
249 int ret;
250
251 /* If buffer queue is empty, return error */
252 if (list_empty(&common->dma_queue)) {
253 vpif_err("buffer queue is empty\n");
254 return -EIO;
255 }
256
257 /* Get the next frame from the buffer queue */
258 common->next_frm = common->cur_frm =
259 list_entry(common->dma_queue.next,
260 struct vpif_disp_buffer, list);
261
262 list_del(&common->cur_frm->list);
263 /* Mark state of the current frame to active */
264 common->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
265
266 /* Initialize field_id and started member */
267 ch->field_id = 0;
268 common->started = 1;
269 addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
270 /* Calculate the offset for Y and C data in the buffer */
271 vpif_calculate_offsets(ch);
272
273 if ((ch->vpifparams.std_info.frm_fmt &&
274 ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE)
275 && (common->fmt.fmt.pix.field != V4L2_FIELD_ANY)))
276 || (!ch->vpifparams.std_info.frm_fmt
277 && (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) {
278 vpif_err("conflict in field format and std format\n");
279 return -EINVAL;
280 }
281
282 /* clock settings */
283 if (vpif_config_data->set_clock) {
284 ret = vpif_config_data->set_clock(ch->vpifparams.std_info.
285 ycmux_mode, ch->vpifparams.std_info.hd_sd);
286 if (ret < 0) {
287 vpif_err("can't set clock\n");
288 return ret;
289 }
290 }
291
292 /* set the parameters and addresses */
293 ret = vpif_set_video_params(vpif, ch->channel_id + 2);
294 if (ret < 0)
295 return ret;
296
297 common->started = ret;
298 vpif_config_addr(ch, ret);
299 common->set_addr((addr + common->ytop_off),
300 (addr + common->ybtm_off),
301 (addr + common->ctop_off),
302 (addr + common->cbtm_off));
303
304 /* Set interrupt for both the fields in VPIF
305 Register enable channel in VPIF register */
306 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
307 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
308 channel2_intr_assert();
309 channel2_intr_enable(1);
310 enable_channel2(1);
311 if (vpif_config_data->chan_config[VPIF_CHANNEL2_VIDEO].clip_en)
312 channel2_clipping_enable(1);
313 }
314
315 if ((VPIF_CHANNEL3_VIDEO == ch->channel_id)
316 || (common->started == 2)) {
317 channel3_intr_assert();
318 channel3_intr_enable(1);
319 enable_channel3(1);
320 if (vpif_config_data->chan_config[VPIF_CHANNEL3_VIDEO].clip_en)
321 channel3_clipping_enable(1);
322 }
323
324 return 0;
325 }
326
327 /* abort streaming and wait for last buffer */
328 static int vpif_stop_streaming(struct vb2_queue *vq)
329 {
330 struct vpif_fh *fh = vb2_get_drv_priv(vq);
331 struct channel_obj *ch = fh->channel;
332 struct common_obj *common;
333
334 if (!vb2_is_streaming(vq))
335 return 0;
336
337 common = &ch->common[VPIF_VIDEO_INDEX];
338
339 /* release all active buffers */
340 while (!list_empty(&common->dma_queue)) {
341 common->next_frm = list_entry(common->dma_queue.next,
342 struct vpif_disp_buffer, list);
343 list_del(&common->next_frm->list);
344 vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR);
345 }
346
347 return 0;
348 }
349
350 static struct vb2_ops video_qops = {
351 .queue_setup = vpif_buffer_queue_setup,
352 .wait_prepare = vpif_wait_prepare,
353 .wait_finish = vpif_wait_finish,
354 .buf_init = vpif_buffer_init,
355 .buf_prepare = vpif_buffer_prepare,
356 .start_streaming = vpif_start_streaming,
357 .stop_streaming = vpif_stop_streaming,
358 .buf_cleanup = vpif_buf_cleanup,
359 .buf_queue = vpif_buffer_queue,
360 };
361
362 static void process_progressive_mode(struct common_obj *common)
363 {
364 unsigned long addr = 0;
365
366 /* Get the next buffer from buffer queue */
367 common->next_frm = list_entry(common->dma_queue.next,
368 struct vpif_disp_buffer, list);
369 /* Remove that buffer from the buffer queue */
370 list_del(&common->next_frm->list);
371 /* Mark status of the buffer as active */
372 common->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
373
374 /* Set top and bottom field addrs in VPIF registers */
375 addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
376 common->set_addr(addr + common->ytop_off,
377 addr + common->ybtm_off,
378 addr + common->ctop_off,
379 addr + common->cbtm_off);
380 }
381
382 static void process_interlaced_mode(int fid, struct common_obj *common)
383 {
384 /* device field id and local field id are in sync */
385 /* If this is even field */
386 if (0 == fid) {
387 if (common->cur_frm == common->next_frm)
388 return;
389
390 /* one frame is displayed If next frame is
391 * available, release cur_frm and move on */
392 /* Copy frame display time */
393 do_gettimeofday(&common->cur_frm->vb.v4l2_buf.timestamp);
394 /* Change status of the cur_frm */
395 vb2_buffer_done(&common->cur_frm->vb,
396 VB2_BUF_STATE_DONE);
397 /* Make cur_frm pointing to next_frm */
398 common->cur_frm = common->next_frm;
399
400 } else if (1 == fid) { /* odd field */
401 if (list_empty(&common->dma_queue)
402 || (common->cur_frm != common->next_frm)) {
403 return;
404 }
405 /* one field is displayed configure the next
406 * frame if it is available else hold on current
407 * frame */
408 /* Get next from the buffer queue */
409 process_progressive_mode(common);
410
411 }
412 }
413
414 /*
415 * vpif_channel_isr: It changes status of the displayed buffer, takes next
416 * buffer from the queue and sets its address in VPIF registers
417 */
418 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
419 {
420 struct vpif_device *dev = &vpif_obj;
421 struct channel_obj *ch;
422 struct common_obj *common;
423 enum v4l2_field field;
424 int fid = -1, i;
425 int channel_id = 0;
426
427 channel_id = *(int *)(dev_id);
428 if (!vpif_intr_status(channel_id + 2))
429 return IRQ_NONE;
430
431 ch = dev->dev[channel_id];
432 field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
433 for (i = 0; i < VPIF_NUMOBJECTS; i++) {
434 common = &ch->common[i];
435 /* If streaming is started in this channel */
436 if (0 == common->started)
437 continue;
438
439 if (1 == ch->vpifparams.std_info.frm_fmt) {
440 if (list_empty(&common->dma_queue))
441 continue;
442
443 /* Progressive mode */
444 if (!channel_first_int[i][channel_id]) {
445 /* Mark status of the cur_frm to
446 * done and unlock semaphore on it */
447 do_gettimeofday(&common->cur_frm->vb.
448 v4l2_buf.timestamp);
449 vb2_buffer_done(&common->cur_frm->vb,
450 VB2_BUF_STATE_DONE);
451 /* Make cur_frm pointing to next_frm */
452 common->cur_frm = common->next_frm;
453 }
454
455 channel_first_int[i][channel_id] = 0;
456 process_progressive_mode(common);
457 } else {
458 /* Interlaced mode */
459 /* If it is first interrupt, ignore it */
460
461 if (channel_first_int[i][channel_id]) {
462 channel_first_int[i][channel_id] = 0;
463 continue;
464 }
465
466 if (0 == i) {
467 ch->field_id ^= 1;
468 /* Get field id from VPIF registers */
469 fid = vpif_channel_getfid(ch->channel_id + 2);
470 /* If fid does not match with stored field id */
471 if (fid != ch->field_id) {
472 /* Make them in sync */
473 if (0 == fid)
474 ch->field_id = fid;
475
476 return IRQ_HANDLED;
477 }
478 }
479 process_interlaced_mode(fid, common);
480 }
481 }
482
483 return IRQ_HANDLED;
484 }
485
486 static int vpif_update_std_info(struct channel_obj *ch)
487 {
488 struct video_obj *vid_ch = &ch->video;
489 struct vpif_params *vpifparams = &ch->vpifparams;
490 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
491 const struct vpif_channel_config_params *config;
492
493 int i;
494
495 for (i = 0; i < vpif_ch_params_count; i++) {
496 config = &ch_params[i];
497 if (config->hd_sd == 0) {
498 vpif_dbg(2, debug, "SD format\n");
499 if (config->stdid & vid_ch->stdid) {
500 memcpy(std_info, config, sizeof(*config));
501 break;
502 }
503 }
504 }
505
506 if (i == vpif_ch_params_count) {
507 vpif_dbg(1, debug, "Format not found\n");
508 return -EINVAL;
509 }
510
511 return 0;
512 }
513
514 static int vpif_update_resolution(struct channel_obj *ch)
515 {
516 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
517 struct video_obj *vid_ch = &ch->video;
518 struct vpif_params *vpifparams = &ch->vpifparams;
519 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
520
521 if (!vid_ch->stdid && !vid_ch->dv_timings.bt.height)
522 return -EINVAL;
523
524 if (vid_ch->stdid) {
525 if (vpif_update_std_info(ch))
526 return -EINVAL;
527 }
528
529 common->fmt.fmt.pix.width = std_info->width;
530 common->fmt.fmt.pix.height = std_info->height;
531 vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n",
532 common->fmt.fmt.pix.width, common->fmt.fmt.pix.height);
533
534 /* Set height and width paramateres */
535 common->height = std_info->height;
536 common->width = std_info->width;
537
538 return 0;
539 }
540
541 /*
542 * vpif_calculate_offsets: This function calculates buffers offset for Y and C
543 * in the top and bottom field
544 */
545 static void vpif_calculate_offsets(struct channel_obj *ch)
546 {
547 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
548 struct vpif_params *vpifparams = &ch->vpifparams;
549 enum v4l2_field field = common->fmt.fmt.pix.field;
550 struct video_obj *vid_ch = &ch->video;
551 unsigned int hpitch, vpitch, sizeimage;
552
553 if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) {
554 if (ch->vpifparams.std_info.frm_fmt)
555 vid_ch->buf_field = V4L2_FIELD_NONE;
556 else
557 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
558 } else {
559 vid_ch->buf_field = common->fmt.fmt.pix.field;
560 }
561
562 sizeimage = common->fmt.fmt.pix.sizeimage;
563
564 hpitch = common->fmt.fmt.pix.bytesperline;
565 vpitch = sizeimage / (hpitch * 2);
566 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
567 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
568 common->ytop_off = 0;
569 common->ybtm_off = hpitch;
570 common->ctop_off = sizeimage / 2;
571 common->cbtm_off = sizeimage / 2 + hpitch;
572 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
573 common->ytop_off = 0;
574 common->ybtm_off = sizeimage / 4;
575 common->ctop_off = sizeimage / 2;
576 common->cbtm_off = common->ctop_off + sizeimage / 4;
577 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
578 common->ybtm_off = 0;
579 common->ytop_off = sizeimage / 4;
580 common->cbtm_off = sizeimage / 2;
581 common->ctop_off = common->cbtm_off + sizeimage / 4;
582 }
583
584 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
585 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
586 vpifparams->video_params.storage_mode = 1;
587 } else {
588 vpifparams->video_params.storage_mode = 0;
589 }
590
591 if (ch->vpifparams.std_info.frm_fmt == 1) {
592 vpifparams->video_params.hpitch =
593 common->fmt.fmt.pix.bytesperline;
594 } else {
595 if ((field == V4L2_FIELD_ANY) ||
596 (field == V4L2_FIELD_INTERLACED))
597 vpifparams->video_params.hpitch =
598 common->fmt.fmt.pix.bytesperline * 2;
599 else
600 vpifparams->video_params.hpitch =
601 common->fmt.fmt.pix.bytesperline;
602 }
603
604 ch->vpifparams.video_params.stdid = ch->vpifparams.std_info.stdid;
605 }
606
607 static void vpif_config_format(struct channel_obj *ch)
608 {
609 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
610
611 common->fmt.fmt.pix.field = V4L2_FIELD_ANY;
612 if (config_params.numbuffers[ch->channel_id] == 0)
613 common->memory = V4L2_MEMORY_USERPTR;
614 else
615 common->memory = V4L2_MEMORY_MMAP;
616
617 common->fmt.fmt.pix.sizeimage =
618 config_params.channel_bufsize[ch->channel_id];
619 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
620 common->fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
621 }
622
623 static int vpif_check_format(struct channel_obj *ch,
624 struct v4l2_pix_format *pixfmt)
625 {
626 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
627 enum v4l2_field field = pixfmt->field;
628 u32 sizeimage, hpitch, vpitch;
629
630 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
631 goto invalid_fmt_exit;
632
633 if (!(VPIF_VALID_FIELD(field)))
634 goto invalid_fmt_exit;
635
636 if (pixfmt->bytesperline <= 0)
637 goto invalid_pitch_exit;
638
639 sizeimage = pixfmt->sizeimage;
640
641 if (vpif_update_resolution(ch))
642 return -EINVAL;
643
644 hpitch = pixfmt->bytesperline;
645 vpitch = sizeimage / (hpitch * 2);
646
647 /* Check for valid value of pitch */
648 if ((hpitch < ch->vpifparams.std_info.width) ||
649 (vpitch < ch->vpifparams.std_info.height))
650 goto invalid_pitch_exit;
651
652 /* Check for 8 byte alignment */
653 if (!ISALIGNED(hpitch)) {
654 vpif_err("invalid pitch alignment\n");
655 return -EINVAL;
656 }
657 pixfmt->width = common->fmt.fmt.pix.width;
658 pixfmt->height = common->fmt.fmt.pix.height;
659
660 return 0;
661
662 invalid_fmt_exit:
663 vpif_err("invalid field format\n");
664 return -EINVAL;
665
666 invalid_pitch_exit:
667 vpif_err("invalid pitch\n");
668 return -EINVAL;
669 }
670
671 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
672 {
673 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
674
675 if (VPIF_CHANNEL3_VIDEO == ch->channel_id) {
676 common->set_addr = ch3_set_videobuf_addr;
677 } else {
678 if (2 == muxmode)
679 common->set_addr = ch2_set_videobuf_addr_yc_nmux;
680 else
681 common->set_addr = ch2_set_videobuf_addr;
682 }
683 }
684
685 /*
686 * vpif_mmap: It is used to map kernel space buffers into user spaces
687 */
688 static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
689 {
690 struct vpif_fh *fh = filep->private_data;
691 struct channel_obj *ch = fh->channel;
692 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
693 int ret;
694
695 vpif_dbg(2, debug, "vpif_mmap\n");
696
697 if (mutex_lock_interruptible(&common->lock))
698 return -ERESTARTSYS;
699 ret = vb2_mmap(&common->buffer_queue, vma);
700 mutex_unlock(&common->lock);
701 return ret;
702 }
703
704 /*
705 * vpif_poll: It is used for select/poll system call
706 */
707 static unsigned int vpif_poll(struct file *filep, poll_table *wait)
708 {
709 struct vpif_fh *fh = filep->private_data;
710 struct channel_obj *ch = fh->channel;
711 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
712 unsigned int res = 0;
713
714 if (common->started) {
715 mutex_lock(&common->lock);
716 res = vb2_poll(&common->buffer_queue, filep, wait);
717 mutex_unlock(&common->lock);
718 }
719
720 return res;
721 }
722
723 /*
724 * vpif_open: It creates object of file handle structure and stores it in
725 * private_data member of filepointer
726 */
727 static int vpif_open(struct file *filep)
728 {
729 struct video_device *vdev = video_devdata(filep);
730 struct channel_obj *ch = video_get_drvdata(vdev);
731 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
732 struct vpif_fh *fh;
733
734 /* Allocate memory for the file handle object */
735 fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL);
736 if (fh == NULL) {
737 vpif_err("unable to allocate memory for file handle object\n");
738 return -ENOMEM;
739 }
740
741 if (mutex_lock_interruptible(&common->lock)) {
742 kfree(fh);
743 return -ERESTARTSYS;
744 }
745 /* store pointer to fh in private_data member of filep */
746 filep->private_data = fh;
747 fh->channel = ch;
748 fh->initialized = 0;
749 if (!ch->initialized) {
750 fh->initialized = 1;
751 ch->initialized = 1;
752 memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
753 }
754
755 /* Increment channel usrs counter */
756 atomic_inc(&ch->usrs);
757 /* Set io_allowed[VPIF_VIDEO_INDEX] member to false */
758 fh->io_allowed[VPIF_VIDEO_INDEX] = 0;
759 /* Initialize priority of this instance to default priority */
760 fh->prio = V4L2_PRIORITY_UNSET;
761 v4l2_prio_open(&ch->prio, &fh->prio);
762 mutex_unlock(&common->lock);
763
764 return 0;
765 }
766
767 /*
768 * vpif_release: This function deletes buffer queue, frees the buffers and
769 * the vpif file handle
770 */
771 static int vpif_release(struct file *filep)
772 {
773 struct vpif_fh *fh = filep->private_data;
774 struct channel_obj *ch = fh->channel;
775 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
776
777 mutex_lock(&common->lock);
778 /* if this instance is doing IO */
779 if (fh->io_allowed[VPIF_VIDEO_INDEX]) {
780 /* Reset io_usrs member of channel object */
781 common->io_usrs = 0;
782 /* Disable channel */
783 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
784 enable_channel2(0);
785 channel2_intr_enable(0);
786 }
787 if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
788 (2 == common->started)) {
789 enable_channel3(0);
790 channel3_intr_enable(0);
791 }
792 common->started = 0;
793
794 /* Free buffers allocated */
795 vb2_queue_release(&common->buffer_queue);
796 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
797
798 common->numbuffers =
799 config_params.numbuffers[ch->channel_id];
800 }
801
802 /* Decrement channel usrs counter */
803 atomic_dec(&ch->usrs);
804 /* If this file handle has initialize encoder device, reset it */
805 if (fh->initialized)
806 ch->initialized = 0;
807
808 /* Close the priority */
809 v4l2_prio_close(&ch->prio, fh->prio);
810 filep->private_data = NULL;
811 fh->initialized = 0;
812 mutex_unlock(&common->lock);
813 kfree(fh);
814
815 return 0;
816 }
817
818 /* functions implementing ioctls */
819 /**
820 * vpif_querycap() - QUERYCAP handler
821 * @file: file ptr
822 * @priv: file handle
823 * @cap: ptr to v4l2_capability structure
824 */
825 static int vpif_querycap(struct file *file, void *priv,
826 struct v4l2_capability *cap)
827 {
828 struct vpif_display_config *config = vpif_dev->platform_data;
829
830 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
831 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
832 snprintf(cap->driver, sizeof(cap->driver), "%s", dev_name(vpif_dev));
833 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
834 dev_name(vpif_dev));
835 strlcpy(cap->card, config->card_name, sizeof(cap->card));
836
837 return 0;
838 }
839
840 static int vpif_enum_fmt_vid_out(struct file *file, void *priv,
841 struct v4l2_fmtdesc *fmt)
842 {
843 if (fmt->index != 0) {
844 vpif_err("Invalid format index\n");
845 return -EINVAL;
846 }
847
848 /* Fill in the information about format */
849 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
850 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
851 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
852
853 return 0;
854 }
855
856 static int vpif_g_fmt_vid_out(struct file *file, void *priv,
857 struct v4l2_format *fmt)
858 {
859 struct vpif_fh *fh = priv;
860 struct channel_obj *ch = fh->channel;
861 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
862
863 /* Check the validity of the buffer type */
864 if (common->fmt.type != fmt->type)
865 return -EINVAL;
866
867 if (vpif_update_resolution(ch))
868 return -EINVAL;
869 *fmt = common->fmt;
870 return 0;
871 }
872
873 static int vpif_s_fmt_vid_out(struct file *file, void *priv,
874 struct v4l2_format *fmt)
875 {
876 struct vpif_fh *fh = priv;
877 struct v4l2_pix_format *pixfmt;
878 struct channel_obj *ch = fh->channel;
879 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
880 int ret = 0;
881
882 if ((VPIF_CHANNEL2_VIDEO == ch->channel_id)
883 || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) {
884 if (!fh->initialized) {
885 vpif_dbg(1, debug, "Channel Busy\n");
886 return -EBUSY;
887 }
888
889 /* Check for the priority */
890 ret = v4l2_prio_check(&ch->prio, fh->prio);
891 if (0 != ret)
892 return ret;
893 fh->initialized = 1;
894 }
895
896 if (common->started) {
897 vpif_dbg(1, debug, "Streaming in progress\n");
898 return -EBUSY;
899 }
900
901 pixfmt = &fmt->fmt.pix;
902 /* Check for valid field format */
903 ret = vpif_check_format(ch, pixfmt);
904 if (ret)
905 return ret;
906
907 /* store the pix format in the channel object */
908 common->fmt.fmt.pix = *pixfmt;
909 /* store the format in the channel object */
910 common->fmt = *fmt;
911 return 0;
912 }
913
914 static int vpif_try_fmt_vid_out(struct file *file, void *priv,
915 struct v4l2_format *fmt)
916 {
917 struct vpif_fh *fh = priv;
918 struct channel_obj *ch = fh->channel;
919 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
920 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
921 int ret = 0;
922
923 ret = vpif_check_format(ch, pixfmt);
924 if (ret) {
925 *pixfmt = common->fmt.fmt.pix;
926 pixfmt->sizeimage = pixfmt->width * pixfmt->height * 2;
927 }
928
929 return ret;
930 }
931
932 static int vpif_reqbufs(struct file *file, void *priv,
933 struct v4l2_requestbuffers *reqbuf)
934 {
935 struct vpif_fh *fh = priv;
936 struct channel_obj *ch = fh->channel;
937 struct common_obj *common;
938 enum v4l2_field field;
939 struct vb2_queue *q;
940 u8 index = 0;
941 int ret;
942
943 /* This file handle has not initialized the channel,
944 It is not allowed to do settings */
945 if ((VPIF_CHANNEL2_VIDEO == ch->channel_id)
946 || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) {
947 if (!fh->initialized) {
948 vpif_err("Channel Busy\n");
949 return -EBUSY;
950 }
951 }
952
953 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != reqbuf->type)
954 return -EINVAL;
955
956 index = VPIF_VIDEO_INDEX;
957
958 common = &ch->common[index];
959
960 if (common->fmt.type != reqbuf->type || !vpif_dev)
961 return -EINVAL;
962 if (0 != common->io_usrs)
963 return -EBUSY;
964
965 if (reqbuf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
966 if (common->fmt.fmt.pix.field == V4L2_FIELD_ANY)
967 field = V4L2_FIELD_INTERLACED;
968 else
969 field = common->fmt.fmt.pix.field;
970 } else {
971 field = V4L2_VBI_INTERLACED;
972 }
973 /* Initialize videobuf2 queue as per the buffer type */
974 common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
975 if (!common->alloc_ctx) {
976 vpif_err("Failed to get the context\n");
977 return -EINVAL;
978 }
979 q = &common->buffer_queue;
980 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
981 q->io_modes = VB2_MMAP | VB2_USERPTR;
982 q->drv_priv = fh;
983 q->ops = &video_qops;
984 q->mem_ops = &vb2_dma_contig_memops;
985 q->buf_struct_size = sizeof(struct vpif_disp_buffer);
986
987 ret = vb2_queue_init(q);
988 if (ret) {
989 vpif_err("vpif_display: vb2_queue_init() failed\n");
990 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
991 return ret;
992 }
993 /* Set io allowed member of file handle to TRUE */
994 fh->io_allowed[index] = 1;
995 /* Increment io usrs member of channel object to 1 */
996 common->io_usrs = 1;
997 /* Store type of memory requested in channel object */
998 common->memory = reqbuf->memory;
999 INIT_LIST_HEAD(&common->dma_queue);
1000 /* Allocate buffers */
1001 return vb2_reqbufs(&common->buffer_queue, reqbuf);
1002 }
1003
1004 static int vpif_querybuf(struct file *file, void *priv,
1005 struct v4l2_buffer *tbuf)
1006 {
1007 struct vpif_fh *fh = priv;
1008 struct channel_obj *ch = fh->channel;
1009 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1010
1011 if (common->fmt.type != tbuf->type)
1012 return -EINVAL;
1013
1014 return vb2_querybuf(&common->buffer_queue, tbuf);
1015 }
1016
1017 static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
1018 {
1019 struct vpif_fh *fh = NULL;
1020 struct channel_obj *ch = NULL;
1021 struct common_obj *common = NULL;
1022
1023 if (!buf || !priv)
1024 return -EINVAL;
1025
1026 fh = priv;
1027 ch = fh->channel;
1028 if (!ch)
1029 return -EINVAL;
1030
1031 common = &(ch->common[VPIF_VIDEO_INDEX]);
1032 if (common->fmt.type != buf->type)
1033 return -EINVAL;
1034
1035 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1036 vpif_err("fh->io_allowed\n");
1037 return -EACCES;
1038 }
1039
1040 return vb2_qbuf(&common->buffer_queue, buf);
1041 }
1042
1043 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
1044 {
1045 struct vpif_fh *fh = priv;
1046 struct channel_obj *ch = fh->channel;
1047 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1048 int ret = 0;
1049
1050 if (!(*std_id & VPIF_V4L2_STD))
1051 return -EINVAL;
1052
1053 if (common->started) {
1054 vpif_err("streaming in progress\n");
1055 return -EBUSY;
1056 }
1057
1058 /* Call encoder subdevice function to set the standard */
1059 ch->video.stdid = *std_id;
1060 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1061 /* Get the information about the standard */
1062 if (vpif_update_resolution(ch))
1063 return -EINVAL;
1064
1065 if ((ch->vpifparams.std_info.width *
1066 ch->vpifparams.std_info.height * 2) >
1067 config_params.channel_bufsize[ch->channel_id]) {
1068 vpif_err("invalid std for this size\n");
1069 return -EINVAL;
1070 }
1071
1072 common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width;
1073 /* Configure the default format information */
1074 vpif_config_format(ch);
1075
1076 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
1077 s_std_output, *std_id);
1078 if (ret < 0) {
1079 vpif_err("Failed to set output standard\n");
1080 return ret;
1081 }
1082
1083 ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, core,
1084 s_std, *std_id);
1085 if (ret < 0)
1086 vpif_err("Failed to set standard for sub devices\n");
1087 return ret;
1088 }
1089
1090 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
1091 {
1092 struct vpif_fh *fh = priv;
1093 struct channel_obj *ch = fh->channel;
1094
1095 *std = ch->video.stdid;
1096 return 0;
1097 }
1098
1099 static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1100 {
1101 struct vpif_fh *fh = priv;
1102 struct channel_obj *ch = fh->channel;
1103 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1104
1105 return vb2_dqbuf(&common->buffer_queue, p,
1106 (file->f_flags & O_NONBLOCK));
1107 }
1108
1109 static int vpif_streamon(struct file *file, void *priv,
1110 enum v4l2_buf_type buftype)
1111 {
1112 struct vpif_fh *fh = priv;
1113 struct channel_obj *ch = fh->channel;
1114 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1115 struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id];
1116 int ret = 0;
1117
1118 if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1119 vpif_err("buffer type not supported\n");
1120 return -EINVAL;
1121 }
1122
1123 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1124 vpif_err("fh->io_allowed\n");
1125 return -EACCES;
1126 }
1127
1128 /* If Streaming is already started, return error */
1129 if (common->started) {
1130 vpif_err("channel->started\n");
1131 return -EBUSY;
1132 }
1133
1134 if ((ch->channel_id == VPIF_CHANNEL2_VIDEO
1135 && oth_ch->common[VPIF_VIDEO_INDEX].started &&
1136 ch->vpifparams.std_info.ycmux_mode == 0)
1137 || ((ch->channel_id == VPIF_CHANNEL3_VIDEO)
1138 && (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) {
1139 vpif_err("other channel is using\n");
1140 return -EBUSY;
1141 }
1142
1143 ret = vpif_check_format(ch, &common->fmt.fmt.pix);
1144 if (ret < 0)
1145 return ret;
1146
1147 /* Call vb2_streamon to start streaming in videobuf2 */
1148 ret = vb2_streamon(&common->buffer_queue, buftype);
1149 if (ret < 0) {
1150 vpif_err("vb2_streamon\n");
1151 return ret;
1152 }
1153
1154 return ret;
1155 }
1156
1157 static int vpif_streamoff(struct file *file, void *priv,
1158 enum v4l2_buf_type buftype)
1159 {
1160 struct vpif_fh *fh = priv;
1161 struct channel_obj *ch = fh->channel;
1162 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1163 struct vpif_display_config *vpif_config_data =
1164 vpif_dev->platform_data;
1165
1166 if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1167 vpif_err("buffer type not supported\n");
1168 return -EINVAL;
1169 }
1170
1171 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1172 vpif_err("fh->io_allowed\n");
1173 return -EACCES;
1174 }
1175
1176 if (!common->started) {
1177 vpif_err("channel->started\n");
1178 return -EINVAL;
1179 }
1180
1181 if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1182 /* disable channel */
1183 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
1184 if (vpif_config_data->
1185 chan_config[VPIF_CHANNEL2_VIDEO].clip_en)
1186 channel2_clipping_enable(0);
1187 enable_channel2(0);
1188 channel2_intr_enable(0);
1189 }
1190 if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
1191 (2 == common->started)) {
1192 if (vpif_config_data->
1193 chan_config[VPIF_CHANNEL3_VIDEO].clip_en)
1194 channel3_clipping_enable(0);
1195 enable_channel3(0);
1196 channel3_intr_enable(0);
1197 }
1198 }
1199
1200 common->started = 0;
1201 return vb2_streamoff(&common->buffer_queue, buftype);
1202 }
1203
1204 static int vpif_cropcap(struct file *file, void *priv,
1205 struct v4l2_cropcap *crop)
1206 {
1207 struct vpif_fh *fh = priv;
1208 struct channel_obj *ch = fh->channel;
1209 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1210 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != crop->type)
1211 return -EINVAL;
1212
1213 crop->bounds.left = crop->bounds.top = 0;
1214 crop->defrect.left = crop->defrect.top = 0;
1215 crop->defrect.height = crop->bounds.height = common->height;
1216 crop->defrect.width = crop->bounds.width = common->width;
1217
1218 return 0;
1219 }
1220
1221 static int vpif_enum_output(struct file *file, void *fh,
1222 struct v4l2_output *output)
1223 {
1224
1225 struct vpif_display_config *config = vpif_dev->platform_data;
1226 struct vpif_display_chan_config *chan_cfg;
1227 struct vpif_fh *vpif_handler = fh;
1228 struct channel_obj *ch = vpif_handler->channel;
1229
1230 chan_cfg = &config->chan_config[ch->channel_id];
1231 if (output->index >= chan_cfg->output_count) {
1232 vpif_dbg(1, debug, "Invalid output index\n");
1233 return -EINVAL;
1234 }
1235
1236 *output = chan_cfg->outputs[output->index].output;
1237 return 0;
1238 }
1239
1240 /**
1241 * vpif_output_to_subdev() - Maps output to sub device
1242 * @vpif_cfg - global config ptr
1243 * @chan_cfg - channel config ptr
1244 * @index - Given output index from application
1245 *
1246 * lookup the sub device information for a given output index.
1247 * we report all the output to application. output table also
1248 * has sub device name for the each output
1249 */
1250 static int
1251 vpif_output_to_subdev(struct vpif_display_config *vpif_cfg,
1252 struct vpif_display_chan_config *chan_cfg, int index)
1253 {
1254 struct vpif_subdev_info *subdev_info;
1255 const char *subdev_name;
1256 int i;
1257
1258 vpif_dbg(2, debug, "vpif_output_to_subdev\n");
1259
1260 if (chan_cfg->outputs == NULL)
1261 return -1;
1262
1263 subdev_name = chan_cfg->outputs[index].subdev_name;
1264 if (subdev_name == NULL)
1265 return -1;
1266
1267 /* loop through the sub device list to get the sub device info */
1268 for (i = 0; i < vpif_cfg->subdev_count; i++) {
1269 subdev_info = &vpif_cfg->subdevinfo[i];
1270 if (!strcmp(subdev_info->name, subdev_name))
1271 return i;
1272 }
1273 return -1;
1274 }
1275
1276 /**
1277 * vpif_set_output() - Select an output
1278 * @vpif_cfg - global config ptr
1279 * @ch - channel
1280 * @index - Given output index from application
1281 *
1282 * Select the given output.
1283 */
1284 static int vpif_set_output(struct vpif_display_config *vpif_cfg,
1285 struct channel_obj *ch, int index)
1286 {
1287 struct vpif_display_chan_config *chan_cfg =
1288 &vpif_cfg->chan_config[ch->channel_id];
1289 struct vpif_subdev_info *subdev_info = NULL;
1290 struct v4l2_subdev *sd = NULL;
1291 u32 input = 0, output = 0;
1292 int sd_index;
1293 int ret;
1294
1295 sd_index = vpif_output_to_subdev(vpif_cfg, chan_cfg, index);
1296 if (sd_index >= 0) {
1297 sd = vpif_obj.sd[sd_index];
1298 subdev_info = &vpif_cfg->subdevinfo[sd_index];
1299 }
1300
1301 if (sd) {
1302 input = chan_cfg->outputs[index].input_route;
1303 output = chan_cfg->outputs[index].output_route;
1304 ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0);
1305 if (ret < 0 && ret != -ENOIOCTLCMD) {
1306 vpif_err("Failed to set output\n");
1307 return ret;
1308 }
1309
1310 }
1311 ch->output_idx = index;
1312 ch->sd = sd;
1313 if (chan_cfg->outputs != NULL)
1314 /* update tvnorms from the sub device output info */
1315 ch->video_dev->tvnorms = chan_cfg->outputs[index].output.std;
1316 return 0;
1317 }
1318
1319 static int vpif_s_output(struct file *file, void *priv, unsigned int i)
1320 {
1321 struct vpif_display_config *config = vpif_dev->platform_data;
1322 struct vpif_display_chan_config *chan_cfg;
1323 struct vpif_fh *fh = priv;
1324 struct channel_obj *ch = fh->channel;
1325 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1326
1327 chan_cfg = &config->chan_config[ch->channel_id];
1328
1329 if (i >= chan_cfg->output_count)
1330 return -EINVAL;
1331
1332 if (common->started) {
1333 vpif_err("Streaming in progress\n");
1334 return -EBUSY;
1335 }
1336
1337 return vpif_set_output(config, ch, i);
1338 }
1339
1340 static int vpif_g_output(struct file *file, void *priv, unsigned int *i)
1341 {
1342 struct vpif_fh *fh = priv;
1343 struct channel_obj *ch = fh->channel;
1344
1345 *i = ch->output_idx;
1346
1347 return 0;
1348 }
1349
1350 static int vpif_g_priority(struct file *file, void *priv, enum v4l2_priority *p)
1351 {
1352 struct vpif_fh *fh = priv;
1353 struct channel_obj *ch = fh->channel;
1354
1355 *p = v4l2_prio_max(&ch->prio);
1356
1357 return 0;
1358 }
1359
1360 static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p)
1361 {
1362 struct vpif_fh *fh = priv;
1363 struct channel_obj *ch = fh->channel;
1364
1365 return v4l2_prio_change(&ch->prio, &fh->prio, p);
1366 }
1367
1368 /**
1369 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1370 * @file: file ptr
1371 * @priv: file handle
1372 * @timings: input timings
1373 */
1374 static int
1375 vpif_enum_dv_timings(struct file *file, void *priv,
1376 struct v4l2_enum_dv_timings *timings)
1377 {
1378 struct vpif_fh *fh = priv;
1379 struct channel_obj *ch = fh->channel;
1380 int ret;
1381
1382 ret = v4l2_subdev_call(ch->sd, video, enum_dv_timings, timings);
1383 if (ret == -ENOIOCTLCMD && ret == -ENODEV)
1384 return -EINVAL;
1385 return ret;
1386 }
1387
1388 /**
1389 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1390 * @file: file ptr
1391 * @priv: file handle
1392 * @timings: digital video timings
1393 */
1394 static int vpif_s_dv_timings(struct file *file, void *priv,
1395 struct v4l2_dv_timings *timings)
1396 {
1397 struct vpif_fh *fh = priv;
1398 struct channel_obj *ch = fh->channel;
1399 struct vpif_params *vpifparams = &ch->vpifparams;
1400 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1401 struct video_obj *vid_ch = &ch->video;
1402 struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1403 int ret;
1404
1405 if (timings->type != V4L2_DV_BT_656_1120) {
1406 vpif_dbg(2, debug, "Timing type not defined\n");
1407 return -EINVAL;
1408 }
1409
1410 /* Configure subdevice timings, if any */
1411 ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
1412 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1413 ret = 0;
1414 if (ret < 0) {
1415 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1416 return ret;
1417 }
1418
1419 if (!(timings->bt.width && timings->bt.height &&
1420 (timings->bt.hbackporch ||
1421 timings->bt.hfrontporch ||
1422 timings->bt.hsync) &&
1423 timings->bt.vfrontporch &&
1424 (timings->bt.vbackporch ||
1425 timings->bt.vsync))) {
1426 vpif_dbg(2, debug, "Timings for width, height, "
1427 "horizontal back porch, horizontal sync, "
1428 "horizontal front porch, vertical back porch, "
1429 "vertical sync and vertical back porch "
1430 "must be defined\n");
1431 return -EINVAL;
1432 }
1433
1434 vid_ch->dv_timings = *timings;
1435
1436 /* Configure video port timings */
1437
1438 std_info->eav2sav = bt->hbackporch + bt->hfrontporch +
1439 bt->hsync - 8;
1440 std_info->sav2eav = bt->width;
1441
1442 std_info->l1 = 1;
1443 std_info->l3 = bt->vsync + bt->vbackporch + 1;
1444
1445 if (bt->interlaced) {
1446 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1447 std_info->vsize = bt->height * 2 +
1448 bt->vfrontporch + bt->vsync + bt->vbackporch +
1449 bt->il_vfrontporch + bt->il_vsync +
1450 bt->il_vbackporch;
1451 std_info->l5 = std_info->vsize/2 -
1452 (bt->vfrontporch - 1);
1453 std_info->l7 = std_info->vsize/2 + 1;
1454 std_info->l9 = std_info->l7 + bt->il_vsync +
1455 bt->il_vbackporch + 1;
1456 std_info->l11 = std_info->vsize -
1457 (bt->il_vfrontporch - 1);
1458 } else {
1459 vpif_dbg(2, debug, "Required timing values for "
1460 "interlaced BT format missing\n");
1461 return -EINVAL;
1462 }
1463 } else {
1464 std_info->vsize = bt->height + bt->vfrontporch +
1465 bt->vsync + bt->vbackporch;
1466 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1467 }
1468 strncpy(std_info->name, "Custom timings BT656/1120",
1469 VPIF_MAX_NAME);
1470 std_info->width = bt->width;
1471 std_info->height = bt->height;
1472 std_info->frm_fmt = bt->interlaced ? 0 : 1;
1473 std_info->ycmux_mode = 0;
1474 std_info->capture_format = 0;
1475 std_info->vbi_supported = 0;
1476 std_info->hd_sd = 1;
1477 std_info->stdid = 0;
1478 vid_ch->stdid = 0;
1479
1480 return 0;
1481 }
1482
1483 /**
1484 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1485 * @file: file ptr
1486 * @priv: file handle
1487 * @timings: digital video timings
1488 */
1489 static int vpif_g_dv_timings(struct file *file, void *priv,
1490 struct v4l2_dv_timings *timings)
1491 {
1492 struct vpif_fh *fh = priv;
1493 struct channel_obj *ch = fh->channel;
1494 struct video_obj *vid_ch = &ch->video;
1495
1496 *timings = vid_ch->dv_timings;
1497
1498 return 0;
1499 }
1500
1501 /*
1502 * vpif_g_chip_ident() - Identify the chip
1503 * @file: file ptr
1504 * @priv: file handle
1505 * @chip: chip identity
1506 *
1507 * Returns zero or -EINVAL if read operations fails.
1508 */
1509 static int vpif_g_chip_ident(struct file *file, void *priv,
1510 struct v4l2_dbg_chip_ident *chip)
1511 {
1512 chip->ident = V4L2_IDENT_NONE;
1513 chip->revision = 0;
1514 if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
1515 chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) {
1516 vpif_dbg(2, debug, "match_type is invalid.\n");
1517 return -EINVAL;
1518 }
1519
1520 return v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 0, core,
1521 g_chip_ident, chip);
1522 }
1523
1524 #ifdef CONFIG_VIDEO_ADV_DEBUG
1525 /*
1526 * vpif_dbg_g_register() - Read register
1527 * @file: file ptr
1528 * @priv: file handle
1529 * @reg: register to be read
1530 *
1531 * Debugging only
1532 * Returns zero or -EINVAL if read operations fails.
1533 */
1534 static int vpif_dbg_g_register(struct file *file, void *priv,
1535 struct v4l2_dbg_register *reg){
1536 struct vpif_fh *fh = priv;
1537 struct channel_obj *ch = fh->channel;
1538
1539 return v4l2_subdev_call(ch->sd, core, g_register, reg);
1540 }
1541
1542 /*
1543 * vpif_dbg_s_register() - Write to register
1544 * @file: file ptr
1545 * @priv: file handle
1546 * @reg: register to be modified
1547 *
1548 * Debugging only
1549 * Returns zero or -EINVAL if write operations fails.
1550 */
1551 static int vpif_dbg_s_register(struct file *file, void *priv,
1552 struct v4l2_dbg_register *reg){
1553 struct vpif_fh *fh = priv;
1554 struct channel_obj *ch = fh->channel;
1555
1556 return v4l2_subdev_call(ch->sd, core, s_register, reg);
1557 }
1558 #endif
1559
1560 /*
1561 * vpif_log_status() - Status information
1562 * @file: file ptr
1563 * @priv: file handle
1564 *
1565 * Returns zero.
1566 */
1567 static int vpif_log_status(struct file *filep, void *priv)
1568 {
1569 /* status for sub devices */
1570 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1571
1572 return 0;
1573 }
1574
1575 /* vpif display ioctl operations */
1576 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1577 .vidioc_querycap = vpif_querycap,
1578 .vidioc_g_priority = vpif_g_priority,
1579 .vidioc_s_priority = vpif_s_priority,
1580 .vidioc_enum_fmt_vid_out = vpif_enum_fmt_vid_out,
1581 .vidioc_g_fmt_vid_out = vpif_g_fmt_vid_out,
1582 .vidioc_s_fmt_vid_out = vpif_s_fmt_vid_out,
1583 .vidioc_try_fmt_vid_out = vpif_try_fmt_vid_out,
1584 .vidioc_reqbufs = vpif_reqbufs,
1585 .vidioc_querybuf = vpif_querybuf,
1586 .vidioc_qbuf = vpif_qbuf,
1587 .vidioc_dqbuf = vpif_dqbuf,
1588 .vidioc_streamon = vpif_streamon,
1589 .vidioc_streamoff = vpif_streamoff,
1590 .vidioc_s_std = vpif_s_std,
1591 .vidioc_g_std = vpif_g_std,
1592 .vidioc_enum_output = vpif_enum_output,
1593 .vidioc_s_output = vpif_s_output,
1594 .vidioc_g_output = vpif_g_output,
1595 .vidioc_cropcap = vpif_cropcap,
1596 .vidioc_enum_dv_timings = vpif_enum_dv_timings,
1597 .vidioc_s_dv_timings = vpif_s_dv_timings,
1598 .vidioc_g_dv_timings = vpif_g_dv_timings,
1599 .vidioc_g_chip_ident = vpif_g_chip_ident,
1600 #ifdef CONFIG_VIDEO_ADV_DEBUG
1601 .vidioc_g_register = vpif_dbg_g_register,
1602 .vidioc_s_register = vpif_dbg_s_register,
1603 #endif
1604 .vidioc_log_status = vpif_log_status,
1605 };
1606
1607 static const struct v4l2_file_operations vpif_fops = {
1608 .owner = THIS_MODULE,
1609 .open = vpif_open,
1610 .release = vpif_release,
1611 .unlocked_ioctl = video_ioctl2,
1612 .mmap = vpif_mmap,
1613 .poll = vpif_poll
1614 };
1615
1616 static struct video_device vpif_video_template = {
1617 .name = "vpif",
1618 .fops = &vpif_fops,
1619 .ioctl_ops = &vpif_ioctl_ops,
1620 };
1621
1622 /*Configure the channels, buffer sizei, request irq */
1623 static int initialize_vpif(void)
1624 {
1625 int free_channel_objects_index;
1626 int free_buffer_channel_index;
1627 int free_buffer_index;
1628 int err = 0, i, j;
1629
1630 /* Default number of buffers should be 3 */
1631 if ((ch2_numbuffers > 0) &&
1632 (ch2_numbuffers < config_params.min_numbuffers))
1633 ch2_numbuffers = config_params.min_numbuffers;
1634 if ((ch3_numbuffers > 0) &&
1635 (ch3_numbuffers < config_params.min_numbuffers))
1636 ch3_numbuffers = config_params.min_numbuffers;
1637
1638 /* Set buffer size to min buffers size if invalid buffer size is
1639 * given */
1640 if (ch2_bufsize < config_params.min_bufsize[VPIF_CHANNEL2_VIDEO])
1641 ch2_bufsize =
1642 config_params.min_bufsize[VPIF_CHANNEL2_VIDEO];
1643 if (ch3_bufsize < config_params.min_bufsize[VPIF_CHANNEL3_VIDEO])
1644 ch3_bufsize =
1645 config_params.min_bufsize[VPIF_CHANNEL3_VIDEO];
1646
1647 config_params.numbuffers[VPIF_CHANNEL2_VIDEO] = ch2_numbuffers;
1648
1649 if (ch2_numbuffers) {
1650 config_params.channel_bufsize[VPIF_CHANNEL2_VIDEO] =
1651 ch2_bufsize;
1652 }
1653 config_params.numbuffers[VPIF_CHANNEL3_VIDEO] = ch3_numbuffers;
1654
1655 if (ch3_numbuffers) {
1656 config_params.channel_bufsize[VPIF_CHANNEL3_VIDEO] =
1657 ch3_bufsize;
1658 }
1659
1660 /* Allocate memory for six channel objects */
1661 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1662 vpif_obj.dev[i] =
1663 kzalloc(sizeof(struct channel_obj), GFP_KERNEL);
1664 /* If memory allocation fails, return error */
1665 if (!vpif_obj.dev[i]) {
1666 free_channel_objects_index = i;
1667 err = -ENOMEM;
1668 goto vpif_init_free_channel_objects;
1669 }
1670 }
1671
1672 free_channel_objects_index = VPIF_DISPLAY_MAX_DEVICES;
1673 free_buffer_channel_index = VPIF_DISPLAY_NUM_CHANNELS;
1674 free_buffer_index = config_params.numbuffers[i - 1];
1675
1676 return 0;
1677
1678 vpif_init_free_channel_objects:
1679 for (j = 0; j < free_channel_objects_index; j++)
1680 kfree(vpif_obj.dev[j]);
1681 return err;
1682 }
1683
1684 /*
1685 * vpif_probe: This function creates device entries by register itself to the
1686 * V4L2 driver and initializes fields of each channel objects
1687 */
1688 static __init int vpif_probe(struct platform_device *pdev)
1689 {
1690 struct vpif_subdev_info *subdevdata;
1691 struct vpif_display_config *config;
1692 int i, j = 0, k, err = 0;
1693 int res_idx = 0;
1694 struct i2c_adapter *i2c_adap;
1695 struct common_obj *common;
1696 struct channel_obj *ch;
1697 struct video_device *vfd;
1698 struct resource *res;
1699 int subdev_count;
1700 size_t size;
1701
1702 vpif_dev = &pdev->dev;
1703 err = initialize_vpif();
1704
1705 if (err) {
1706 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1707 return err;
1708 }
1709
1710 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1711 if (err) {
1712 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1713 return err;
1714 }
1715
1716 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1717 for (i = res->start; i <= res->end; i++) {
1718 if (request_irq(i, vpif_channel_isr, IRQF_SHARED,
1719 "VPIF_Display", (void *)
1720 (&vpif_obj.dev[res_idx]->channel_id))) {
1721 err = -EBUSY;
1722 for (j = 0; j < i; j++)
1723 free_irq(j, (void *)
1724 (&vpif_obj.dev[res_idx]->channel_id));
1725 goto vpif_int_err;
1726 }
1727 }
1728 res_idx++;
1729 }
1730
1731 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1732 /* Get the pointer to the channel object */
1733 ch = vpif_obj.dev[i];
1734
1735 /* Allocate memory for video device */
1736 vfd = video_device_alloc();
1737 if (vfd == NULL) {
1738 for (j = 0; j < i; j++) {
1739 ch = vpif_obj.dev[j];
1740 video_device_release(ch->video_dev);
1741 }
1742 err = -ENOMEM;
1743 goto vpif_int_err;
1744 }
1745
1746 /* Initialize field of video device */
1747 *vfd = vpif_video_template;
1748 vfd->v4l2_dev = &vpif_obj.v4l2_dev;
1749 vfd->release = video_device_release;
1750 vfd->vfl_dir = VFL_DIR_TX;
1751 snprintf(vfd->name, sizeof(vfd->name),
1752 "VPIF_Display_DRIVER_V%s",
1753 VPIF_DISPLAY_VERSION);
1754
1755 /* Set video_dev to the video device */
1756 ch->video_dev = vfd;
1757 }
1758
1759 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1760 if (res) {
1761 size = resource_size(res);
1762 /* The resources are divided into two equal memory and when
1763 * we have HD output we can add them together
1764 */
1765 for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
1766 ch = vpif_obj.dev[j];
1767 ch->channel_id = j;
1768
1769 /* only enabled if second resource exists */
1770 config_params.video_limit[ch->channel_id] = 0;
1771 if (size)
1772 config_params.video_limit[ch->channel_id] =
1773 size/2;
1774 }
1775 }
1776
1777 i2c_adap = i2c_get_adapter(1);
1778 config = pdev->dev.platform_data;
1779 subdev_count = config->subdev_count;
1780 subdevdata = config->subdevinfo;
1781 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1782 GFP_KERNEL);
1783 if (vpif_obj.sd == NULL) {
1784 vpif_err("unable to allocate memory for subdevice pointers\n");
1785 err = -ENOMEM;
1786 goto vpif_sd_error;
1787 }
1788
1789 for (i = 0; i < subdev_count; i++) {
1790 vpif_obj.sd[i] = v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1791 i2c_adap,
1792 &subdevdata[i].board_info,
1793 NULL);
1794 if (!vpif_obj.sd[i]) {
1795 vpif_err("Error registering v4l2 subdevice\n");
1796 goto probe_subdev_out;
1797 }
1798
1799 if (vpif_obj.sd[i])
1800 vpif_obj.sd[i]->grp_id = 1 << i;
1801 }
1802
1803 for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
1804 ch = vpif_obj.dev[j];
1805 /* Initialize field of the channel objects */
1806 atomic_set(&ch->usrs, 0);
1807 for (k = 0; k < VPIF_NUMOBJECTS; k++) {
1808 ch->common[k].numbuffers = 0;
1809 common = &ch->common[k];
1810 common->io_usrs = 0;
1811 common->started = 0;
1812 spin_lock_init(&common->irqlock);
1813 mutex_init(&common->lock);
1814 common->numbuffers = 0;
1815 common->set_addr = NULL;
1816 common->ytop_off = common->ybtm_off = 0;
1817 common->ctop_off = common->cbtm_off = 0;
1818 common->cur_frm = common->next_frm = NULL;
1819 memset(&common->fmt, 0, sizeof(common->fmt));
1820 common->numbuffers = config_params.numbuffers[k];
1821
1822 }
1823 ch->initialized = 0;
1824 if (subdev_count)
1825 ch->sd = vpif_obj.sd[0];
1826 ch->channel_id = j;
1827 if (j < 2)
1828 ch->common[VPIF_VIDEO_INDEX].numbuffers =
1829 config_params.numbuffers[ch->channel_id];
1830 else
1831 ch->common[VPIF_VIDEO_INDEX].numbuffers = 0;
1832
1833 memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
1834
1835 /* Initialize prio member of channel object */
1836 v4l2_prio_init(&ch->prio);
1837 ch->common[VPIF_VIDEO_INDEX].fmt.type =
1838 V4L2_BUF_TYPE_VIDEO_OUTPUT;
1839 ch->video_dev->lock = &common->lock;
1840 video_set_drvdata(ch->video_dev, ch);
1841
1842 /* select output 0 */
1843 err = vpif_set_output(config, ch, 0);
1844 if (err)
1845 goto probe_out;
1846
1847 /* register video device */
1848 vpif_dbg(1, debug, "channel=%x,channel->video_dev=%x\n",
1849 (int)ch, (int)&ch->video_dev);
1850
1851 err = video_register_device(ch->video_dev,
1852 VFL_TYPE_GRABBER, (j ? 3 : 2));
1853 if (err < 0)
1854 goto probe_out;
1855 }
1856
1857 v4l2_info(&vpif_obj.v4l2_dev,
1858 " VPIF display driver initialized\n");
1859 return 0;
1860
1861 probe_out:
1862 for (k = 0; k < j; k++) {
1863 ch = vpif_obj.dev[k];
1864 video_unregister_device(ch->video_dev);
1865 video_device_release(ch->video_dev);
1866 ch->video_dev = NULL;
1867 }
1868 probe_subdev_out:
1869 kfree(vpif_obj.sd);
1870 vpif_sd_error:
1871 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1872 ch = vpif_obj.dev[i];
1873 /* Note: does nothing if ch->video_dev == NULL */
1874 video_device_release(ch->video_dev);
1875 }
1876 vpif_int_err:
1877 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1878 vpif_err("VPIF IRQ request failed\n");
1879 for (i = 0; i < res_idx; i++) {
1880 res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
1881 for (j = res->start; j <= res->end; j++)
1882 free_irq(j, (void *)(&vpif_obj.dev[i]->channel_id));
1883 }
1884
1885 return err;
1886 }
1887
1888 /*
1889 * vpif_remove: It un-register channels from V4L2 driver
1890 */
1891 static int vpif_remove(struct platform_device *device)
1892 {
1893 struct channel_obj *ch;
1894 int i;
1895
1896 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1897
1898 /* un-register device */
1899 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1900 /* Get the pointer to the channel object */
1901 ch = vpif_obj.dev[i];
1902 /* Unregister video device */
1903 video_unregister_device(ch->video_dev);
1904
1905 ch->video_dev = NULL;
1906 }
1907
1908 return 0;
1909 }
1910
1911 #ifdef CONFIG_PM
1912 static int vpif_suspend(struct device *dev)
1913 {
1914 struct common_obj *common;
1915 struct channel_obj *ch;
1916 int i;
1917
1918 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1919 /* Get the pointer to the channel object */
1920 ch = vpif_obj.dev[i];
1921 common = &ch->common[VPIF_VIDEO_INDEX];
1922 mutex_lock(&common->lock);
1923 if (atomic_read(&ch->usrs) && common->io_usrs) {
1924 /* Disable channel */
1925 if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1926 enable_channel2(0);
1927 channel2_intr_enable(0);
1928 }
1929 if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1930 common->started == 2) {
1931 enable_channel3(0);
1932 channel3_intr_enable(0);
1933 }
1934 }
1935 mutex_unlock(&common->lock);
1936 }
1937
1938 return 0;
1939 }
1940
1941 static int vpif_resume(struct device *dev)
1942 {
1943
1944 struct common_obj *common;
1945 struct channel_obj *ch;
1946 int i;
1947
1948 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1949 /* Get the pointer to the channel object */
1950 ch = vpif_obj.dev[i];
1951 common = &ch->common[VPIF_VIDEO_INDEX];
1952 mutex_lock(&common->lock);
1953 if (atomic_read(&ch->usrs) && common->io_usrs) {
1954 /* Enable channel */
1955 if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1956 enable_channel2(1);
1957 channel2_intr_enable(1);
1958 }
1959 if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1960 common->started == 2) {
1961 enable_channel3(1);
1962 channel3_intr_enable(1);
1963 }
1964 }
1965 mutex_unlock(&common->lock);
1966 }
1967
1968 return 0;
1969 }
1970
1971 static const struct dev_pm_ops vpif_pm = {
1972 .suspend = vpif_suspend,
1973 .resume = vpif_resume,
1974 };
1975
1976 #define vpif_pm_ops (&vpif_pm)
1977 #else
1978 #define vpif_pm_ops NULL
1979 #endif
1980
1981 static __refdata struct platform_driver vpif_driver = {
1982 .driver = {
1983 .name = "vpif_display",
1984 .owner = THIS_MODULE,
1985 .pm = vpif_pm_ops,
1986 },
1987 .probe = vpif_probe,
1988 .remove = vpif_remove,
1989 };
1990
1991 static __init int vpif_init(void)
1992 {
1993 return platform_driver_register(&vpif_driver);
1994 }
1995
1996 /*
1997 * vpif_cleanup: This function un-registers device and driver to the kernel,
1998 * frees requested irq handler and de-allocates memory allocated for channel
1999 * objects.
2000 */
2001 static void vpif_cleanup(void)
2002 {
2003 struct platform_device *pdev;
2004 struct resource *res;
2005 int irq_num;
2006 int i = 0;
2007
2008 pdev = container_of(vpif_dev, struct platform_device, dev);
2009
2010 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) {
2011 for (irq_num = res->start; irq_num <= res->end; irq_num++)
2012 free_irq(irq_num,
2013 (void *)(&vpif_obj.dev[i]->channel_id));
2014 i++;
2015 }
2016
2017 platform_driver_unregister(&vpif_driver);
2018 kfree(vpif_obj.sd);
2019 for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++)
2020 kfree(vpif_obj.dev[i]);
2021 }
2022
2023 module_init(vpif_init);
2024 module_exit(vpif_cleanup);
Linux kernel - Deliverables
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