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vpif_display.c
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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 */
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 
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 
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 
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 
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 
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);
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