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6ffefff5 MK |
1 | /* |
2 | * Copyright (C) 2009 Texas Instruments Inc | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | * | |
18 | * TODO : add support for VBI & HBI data service | |
19 | * add static buffer allocation | |
20 | */ | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/errno.h> | |
25 | #include <linux/fs.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/interrupt.h> | |
28 | #include <linux/workqueue.h> | |
29 | #include <linux/string.h> | |
30 | #include <linux/videodev2.h> | |
31 | #include <linux/wait.h> | |
32 | #include <linux/time.h> | |
33 | #include <linux/i2c.h> | |
34 | #include <linux/platform_device.h> | |
35 | #include <linux/io.h> | |
36 | #include <linux/version.h> | |
5a0e3ad6 | 37 | #include <linux/slab.h> |
6ffefff5 MK |
38 | #include <media/v4l2-device.h> |
39 | #include <media/v4l2-ioctl.h> | |
40 | ||
41 | #include "vpif_capture.h" | |
42 | #include "vpif.h" | |
43 | ||
44 | MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver"); | |
45 | MODULE_LICENSE("GPL"); | |
46 | ||
47 | #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg) | |
48 | #define vpif_dbg(level, debug, fmt, arg...) \ | |
49 | v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg) | |
50 | ||
51 | static int debug = 1; | |
52 | static u32 ch0_numbuffers = 3; | |
53 | static u32 ch1_numbuffers = 3; | |
54 | static u32 ch0_bufsize = 1920 * 1080 * 2; | |
55 | static u32 ch1_bufsize = 720 * 576 * 2; | |
56 | ||
57 | module_param(debug, int, 0644); | |
58 | module_param(ch0_numbuffers, uint, S_IRUGO); | |
59 | module_param(ch1_numbuffers, uint, S_IRUGO); | |
60 | module_param(ch0_bufsize, uint, S_IRUGO); | |
61 | module_param(ch1_bufsize, uint, S_IRUGO); | |
62 | ||
63 | MODULE_PARM_DESC(debug, "Debug level 0-1"); | |
64 | MODULE_PARM_DESC(ch2_numbuffers, "Channel0 buffer count (default:3)"); | |
65 | MODULE_PARM_DESC(ch3_numbuffers, "Channel1 buffer count (default:3)"); | |
66 | MODULE_PARM_DESC(ch2_bufsize, "Channel0 buffer size (default:1920 x 1080 x 2)"); | |
67 | MODULE_PARM_DESC(ch3_bufsize, "Channel1 buffer size (default:720 x 576 x 2)"); | |
68 | ||
69 | static struct vpif_config_params config_params = { | |
70 | .min_numbuffers = 3, | |
71 | .numbuffers[0] = 3, | |
72 | .numbuffers[1] = 3, | |
73 | .min_bufsize[0] = 720 * 480 * 2, | |
74 | .min_bufsize[1] = 720 * 480 * 2, | |
75 | .channel_bufsize[0] = 1920 * 1080 * 2, | |
76 | .channel_bufsize[1] = 720 * 576 * 2, | |
77 | }; | |
78 | ||
79 | /* global variables */ | |
80 | static struct vpif_device vpif_obj = { {NULL} }; | |
81 | static struct device *vpif_dev; | |
82 | ||
83 | /** | |
84 | * ch_params: video standard configuration parameters for vpif | |
85 | */ | |
86 | static const struct vpif_channel_config_params ch_params[] = { | |
87 | { | |
88 | "NTSC_M", 720, 480, 30, 0, 1, 268, 1440, 1, 23, 263, 266, | |
89 | 286, 525, 525, 0, 1, 0, V4L2_STD_525_60, | |
90 | }, | |
91 | { | |
92 | "PAL_BDGHIK", 720, 576, 25, 0, 1, 280, 1440, 1, 23, 311, 313, | |
93 | 336, 624, 625, 0, 1, 0, V4L2_STD_625_50, | |
94 | }, | |
95 | }; | |
96 | ||
97 | /** | |
98 | * vpif_uservirt_to_phys : translate user/virtual address to phy address | |
99 | * @virtp: user/virtual address | |
100 | * | |
101 | * This inline function is used to convert user space virtual address to | |
102 | * physical address. | |
103 | */ | |
104 | static inline u32 vpif_uservirt_to_phys(u32 virtp) | |
105 | { | |
106 | unsigned long physp = 0; | |
107 | struct mm_struct *mm = current->mm; | |
108 | struct vm_area_struct *vma; | |
109 | ||
110 | vma = find_vma(mm, virtp); | |
111 | ||
112 | /* For kernel direct-mapped memory, take the easy way */ | |
113 | if (virtp >= PAGE_OFFSET) | |
114 | physp = virt_to_phys((void *)virtp); | |
115 | else if (vma && (vma->vm_flags & VM_IO) && (vma->vm_pgoff)) | |
116 | /** | |
117 | * this will catch, kernel-allocated, mmaped-to-usermode | |
118 | * addresses | |
119 | */ | |
120 | physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start); | |
121 | else { | |
122 | /* otherwise, use get_user_pages() for general userland pages */ | |
123 | int res, nr_pages = 1; | |
124 | struct page *pages; | |
125 | ||
126 | down_read(¤t->mm->mmap_sem); | |
127 | ||
128 | res = get_user_pages(current, current->mm, | |
129 | virtp, nr_pages, 1, 0, &pages, NULL); | |
130 | up_read(¤t->mm->mmap_sem); | |
131 | ||
132 | if (res == nr_pages) | |
133 | physp = __pa(page_address(&pages[0]) + | |
134 | (virtp & ~PAGE_MASK)); | |
135 | else { | |
136 | vpif_err("get_user_pages failed\n"); | |
137 | return 0; | |
138 | } | |
139 | } | |
140 | return physp; | |
141 | } | |
142 | ||
143 | /** | |
144 | * buffer_prepare : callback function for buffer prepare | |
145 | * @q : buffer queue ptr | |
146 | * @vb: ptr to video buffer | |
147 | * @field: field info | |
148 | * | |
149 | * This is the callback function for buffer prepare when videobuf_qbuf() | |
150 | * function is called. The buffer is prepared and user space virtual address | |
151 | * or user address is converted into physical address | |
152 | */ | |
153 | static int vpif_buffer_prepare(struct videobuf_queue *q, | |
154 | struct videobuf_buffer *vb, | |
155 | enum v4l2_field field) | |
156 | { | |
157 | /* Get the file handle object and channel object */ | |
158 | struct vpif_fh *fh = q->priv_data; | |
159 | struct channel_obj *ch = fh->channel; | |
160 | struct common_obj *common; | |
161 | unsigned long addr; | |
162 | ||
163 | ||
164 | vpif_dbg(2, debug, "vpif_buffer_prepare\n"); | |
165 | ||
166 | common = &ch->common[VPIF_VIDEO_INDEX]; | |
167 | ||
168 | /* If buffer is not initialized, initialize it */ | |
169 | if (VIDEOBUF_NEEDS_INIT == vb->state) { | |
170 | vb->width = common->width; | |
171 | vb->height = common->height; | |
172 | vb->size = vb->width * vb->height; | |
173 | vb->field = field; | |
174 | } | |
175 | vb->state = VIDEOBUF_PREPARED; | |
176 | /** | |
177 | * if user pointer memory mechanism is used, get the physical | |
178 | * address of the buffer | |
179 | */ | |
180 | if (V4L2_MEMORY_USERPTR == common->memory) { | |
181 | if (0 == vb->baddr) { | |
182 | vpif_dbg(1, debug, "buffer address is 0\n"); | |
183 | return -EINVAL; | |
184 | ||
185 | } | |
186 | vb->boff = vpif_uservirt_to_phys(vb->baddr); | |
187 | if (!IS_ALIGNED(vb->boff, 8)) | |
188 | goto exit; | |
189 | } | |
190 | ||
191 | addr = vb->boff; | |
192 | if (q->streaming) { | |
193 | if (!IS_ALIGNED((addr + common->ytop_off), 8) || | |
194 | !IS_ALIGNED((addr + common->ybtm_off), 8) || | |
195 | !IS_ALIGNED((addr + common->ctop_off), 8) || | |
196 | !IS_ALIGNED((addr + common->cbtm_off), 8)) | |
197 | goto exit; | |
198 | } | |
199 | return 0; | |
200 | exit: | |
201 | vpif_dbg(1, debug, "buffer_prepare:offset is not aligned to 8 bytes\n"); | |
202 | return -EINVAL; | |
203 | } | |
204 | ||
205 | /** | |
206 | * vpif_buffer_setup : Callback function for buffer setup. | |
207 | * @q: buffer queue ptr | |
208 | * @count: number of buffers | |
209 | * @size: size of the buffer | |
210 | * | |
211 | * This callback function is called when reqbuf() is called to adjust | |
212 | * the buffer count and buffer size | |
213 | */ | |
214 | static int vpif_buffer_setup(struct videobuf_queue *q, unsigned int *count, | |
215 | unsigned int *size) | |
216 | { | |
217 | /* Get the file handle object and channel object */ | |
218 | struct vpif_fh *fh = q->priv_data; | |
219 | struct channel_obj *ch = fh->channel; | |
220 | struct common_obj *common; | |
221 | ||
222 | common = &ch->common[VPIF_VIDEO_INDEX]; | |
223 | ||
224 | vpif_dbg(2, debug, "vpif_buffer_setup\n"); | |
225 | ||
226 | /* If memory type is not mmap, return */ | |
227 | if (V4L2_MEMORY_MMAP != common->memory) | |
228 | return 0; | |
229 | ||
230 | /* Calculate the size of the buffer */ | |
231 | *size = config_params.channel_bufsize[ch->channel_id]; | |
232 | ||
233 | if (*count < config_params.min_numbuffers) | |
234 | *count = config_params.min_numbuffers; | |
235 | return 0; | |
236 | } | |
237 | ||
238 | /** | |
239 | * vpif_buffer_queue : Callback function to add buffer to DMA queue | |
240 | * @q: ptr to videobuf_queue | |
241 | * @vb: ptr to videobuf_buffer | |
242 | */ | |
243 | static void vpif_buffer_queue(struct videobuf_queue *q, | |
244 | struct videobuf_buffer *vb) | |
245 | { | |
246 | /* Get the file handle object and channel object */ | |
247 | struct vpif_fh *fh = q->priv_data; | |
248 | struct channel_obj *ch = fh->channel; | |
249 | struct common_obj *common; | |
250 | ||
251 | common = &ch->common[VPIF_VIDEO_INDEX]; | |
252 | ||
253 | vpif_dbg(2, debug, "vpif_buffer_queue\n"); | |
254 | ||
255 | /* add the buffer to the DMA queue */ | |
256 | list_add_tail(&vb->queue, &common->dma_queue); | |
257 | /* Change state of the buffer */ | |
258 | vb->state = VIDEOBUF_QUEUED; | |
259 | } | |
260 | ||
261 | /** | |
262 | * vpif_buffer_release : Callback function to free buffer | |
263 | * @q: buffer queue ptr | |
264 | * @vb: ptr to video buffer | |
265 | * | |
266 | * This function is called from the videobuf layer to free memory | |
267 | * allocated to the buffers | |
268 | */ | |
269 | static void vpif_buffer_release(struct videobuf_queue *q, | |
270 | struct videobuf_buffer *vb) | |
271 | { | |
272 | /* Get the file handle object and channel object */ | |
273 | struct vpif_fh *fh = q->priv_data; | |
274 | struct channel_obj *ch = fh->channel; | |
275 | struct common_obj *common; | |
276 | ||
277 | common = &ch->common[VPIF_VIDEO_INDEX]; | |
278 | ||
279 | videobuf_dma_contig_free(q, vb); | |
280 | vb->state = VIDEOBUF_NEEDS_INIT; | |
281 | } | |
282 | ||
283 | static struct videobuf_queue_ops video_qops = { | |
284 | .buf_setup = vpif_buffer_setup, | |
285 | .buf_prepare = vpif_buffer_prepare, | |
286 | .buf_queue = vpif_buffer_queue, | |
287 | .buf_release = vpif_buffer_release, | |
288 | }; | |
289 | ||
290 | static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = | |
291 | { {1, 1} }; | |
292 | ||
293 | /** | |
294 | * vpif_process_buffer_complete: process a completed buffer | |
295 | * @common: ptr to common channel object | |
296 | * | |
297 | * This function time stamp the buffer and mark it as DONE. It also | |
298 | * wake up any process waiting on the QUEUE and set the next buffer | |
299 | * as current | |
300 | */ | |
301 | static void vpif_process_buffer_complete(struct common_obj *common) | |
302 | { | |
303 | do_gettimeofday(&common->cur_frm->ts); | |
304 | common->cur_frm->state = VIDEOBUF_DONE; | |
305 | wake_up_interruptible(&common->cur_frm->done); | |
306 | /* Make curFrm pointing to nextFrm */ | |
307 | common->cur_frm = common->next_frm; | |
308 | } | |
309 | ||
310 | /** | |
311 | * vpif_schedule_next_buffer: set next buffer address for capture | |
312 | * @common : ptr to common channel object | |
313 | * | |
314 | * This function will get next buffer from the dma queue and | |
315 | * set the buffer address in the vpif register for capture. | |
316 | * the buffer is marked active | |
317 | */ | |
318 | static void vpif_schedule_next_buffer(struct common_obj *common) | |
319 | { | |
320 | unsigned long addr = 0; | |
321 | ||
322 | common->next_frm = list_entry(common->dma_queue.next, | |
323 | struct videobuf_buffer, queue); | |
324 | /* Remove that buffer from the buffer queue */ | |
325 | list_del(&common->next_frm->queue); | |
326 | common->next_frm->state = VIDEOBUF_ACTIVE; | |
327 | if (V4L2_MEMORY_USERPTR == common->memory) | |
328 | addr = common->next_frm->boff; | |
329 | else | |
330 | addr = videobuf_to_dma_contig(common->next_frm); | |
331 | ||
332 | /* Set top and bottom field addresses in VPIF registers */ | |
333 | common->set_addr(addr + common->ytop_off, | |
334 | addr + common->ybtm_off, | |
335 | addr + common->ctop_off, | |
336 | addr + common->cbtm_off); | |
337 | } | |
338 | ||
339 | /** | |
340 | * vpif_channel_isr : ISR handler for vpif capture | |
341 | * @irq: irq number | |
342 | * @dev_id: dev_id ptr | |
343 | * | |
344 | * It changes status of the captured buffer, takes next buffer from the queue | |
345 | * and sets its address in VPIF registers | |
346 | */ | |
347 | static irqreturn_t vpif_channel_isr(int irq, void *dev_id) | |
348 | { | |
349 | struct vpif_device *dev = &vpif_obj; | |
350 | struct common_obj *common; | |
351 | struct channel_obj *ch; | |
352 | enum v4l2_field field; | |
353 | int channel_id = 0; | |
354 | int fid = -1, i; | |
355 | ||
356 | channel_id = *(int *)(dev_id); | |
357 | ch = dev->dev[channel_id]; | |
358 | ||
359 | field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field; | |
360 | ||
361 | for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) { | |
362 | common = &ch->common[i]; | |
363 | /* skip If streaming is not started in this channel */ | |
364 | if (0 == common->started) | |
365 | continue; | |
366 | ||
367 | /* Check the field format */ | |
368 | if (1 == ch->vpifparams.std_info.frm_fmt) { | |
369 | /* Progressive mode */ | |
370 | if (list_empty(&common->dma_queue)) | |
371 | continue; | |
372 | ||
373 | if (!channel_first_int[i][channel_id]) | |
374 | vpif_process_buffer_complete(common); | |
375 | ||
376 | channel_first_int[i][channel_id] = 0; | |
377 | ||
378 | vpif_schedule_next_buffer(common); | |
379 | ||
380 | ||
381 | channel_first_int[i][channel_id] = 0; | |
382 | } else { | |
383 | /** | |
384 | * Interlaced mode. If it is first interrupt, ignore | |
385 | * it | |
386 | */ | |
387 | if (channel_first_int[i][channel_id]) { | |
388 | channel_first_int[i][channel_id] = 0; | |
389 | continue; | |
390 | } | |
391 | if (0 == i) { | |
392 | ch->field_id ^= 1; | |
393 | /* Get field id from VPIF registers */ | |
394 | fid = vpif_channel_getfid(ch->channel_id); | |
395 | if (fid != ch->field_id) { | |
396 | /** | |
397 | * If field id does not match stored | |
398 | * field id, make them in sync | |
399 | */ | |
400 | if (0 == fid) | |
401 | ch->field_id = fid; | |
402 | return IRQ_HANDLED; | |
403 | } | |
404 | } | |
405 | /* device field id and local field id are in sync */ | |
406 | if (0 == fid) { | |
407 | /* this is even field */ | |
408 | if (common->cur_frm == common->next_frm) | |
409 | continue; | |
410 | ||
411 | /* mark the current buffer as done */ | |
412 | vpif_process_buffer_complete(common); | |
413 | } else if (1 == fid) { | |
414 | /* odd field */ | |
415 | if (list_empty(&common->dma_queue) || | |
416 | (common->cur_frm != common->next_frm)) | |
417 | continue; | |
418 | ||
419 | vpif_schedule_next_buffer(common); | |
420 | } | |
421 | } | |
422 | } | |
423 | return IRQ_HANDLED; | |
424 | } | |
425 | ||
426 | /** | |
427 | * vpif_update_std_info() - update standard related info | |
428 | * @ch: ptr to channel object | |
429 | * | |
430 | * For a given standard selected by application, update values | |
431 | * in the device data structures | |
432 | */ | |
433 | static int vpif_update_std_info(struct channel_obj *ch) | |
434 | { | |
435 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
436 | struct vpif_params *vpifparams = &ch->vpifparams; | |
437 | const struct vpif_channel_config_params *config; | |
438 | struct vpif_channel_config_params *std_info; | |
439 | struct video_obj *vid_ch = &ch->video; | |
440 | int index; | |
441 | ||
442 | vpif_dbg(2, debug, "vpif_update_std_info\n"); | |
443 | ||
444 | std_info = &vpifparams->std_info; | |
445 | ||
446 | for (index = 0; index < ARRAY_SIZE(ch_params); index++) { | |
447 | config = &ch_params[index]; | |
448 | if (config->stdid & vid_ch->stdid) { | |
449 | memcpy(std_info, config, sizeof(*config)); | |
450 | break; | |
451 | } | |
452 | } | |
453 | ||
454 | /* standard not found */ | |
455 | if (index == ARRAY_SIZE(ch_params)) | |
456 | return -EINVAL; | |
457 | ||
458 | common->fmt.fmt.pix.width = std_info->width; | |
459 | common->width = std_info->width; | |
460 | common->fmt.fmt.pix.height = std_info->height; | |
461 | common->height = std_info->height; | |
462 | common->fmt.fmt.pix.bytesperline = std_info->width; | |
463 | vpifparams->video_params.hpitch = std_info->width; | |
464 | vpifparams->video_params.storage_mode = std_info->frm_fmt; | |
465 | return 0; | |
466 | } | |
467 | ||
468 | /** | |
469 | * vpif_calculate_offsets : This function calculates buffers offsets | |
470 | * @ch : ptr to channel object | |
471 | * | |
472 | * This function calculates buffer offsets for Y and C in the top and | |
473 | * bottom field | |
474 | */ | |
475 | static void vpif_calculate_offsets(struct channel_obj *ch) | |
476 | { | |
477 | unsigned int hpitch, vpitch, sizeimage; | |
478 | struct video_obj *vid_ch = &(ch->video); | |
479 | struct vpif_params *vpifparams = &ch->vpifparams; | |
480 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
481 | enum v4l2_field field = common->fmt.fmt.pix.field; | |
482 | ||
483 | vpif_dbg(2, debug, "vpif_calculate_offsets\n"); | |
484 | ||
485 | if (V4L2_FIELD_ANY == field) { | |
486 | if (vpifparams->std_info.frm_fmt) | |
487 | vid_ch->buf_field = V4L2_FIELD_NONE; | |
488 | else | |
489 | vid_ch->buf_field = V4L2_FIELD_INTERLACED; | |
490 | } else | |
491 | vid_ch->buf_field = common->fmt.fmt.pix.field; | |
492 | ||
493 | if (V4L2_MEMORY_USERPTR == common->memory) | |
494 | sizeimage = common->fmt.fmt.pix.sizeimage; | |
495 | else | |
496 | sizeimage = config_params.channel_bufsize[ch->channel_id]; | |
497 | ||
498 | hpitch = common->fmt.fmt.pix.bytesperline; | |
499 | vpitch = sizeimage / (hpitch * 2); | |
500 | ||
501 | if ((V4L2_FIELD_NONE == vid_ch->buf_field) || | |
502 | (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) { | |
503 | /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ | |
504 | common->ytop_off = 0; | |
505 | common->ybtm_off = hpitch; | |
506 | common->ctop_off = sizeimage / 2; | |
507 | common->cbtm_off = sizeimage / 2 + hpitch; | |
508 | } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) { | |
509 | /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ | |
510 | common->ytop_off = 0; | |
511 | common->ybtm_off = sizeimage / 4; | |
512 | common->ctop_off = sizeimage / 2; | |
513 | common->cbtm_off = common->ctop_off + sizeimage / 4; | |
514 | } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) { | |
515 | /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ | |
516 | common->ybtm_off = 0; | |
517 | common->ytop_off = sizeimage / 4; | |
518 | common->cbtm_off = sizeimage / 2; | |
519 | common->ctop_off = common->cbtm_off + sizeimage / 4; | |
520 | } | |
521 | if ((V4L2_FIELD_NONE == vid_ch->buf_field) || | |
522 | (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) | |
523 | vpifparams->video_params.storage_mode = 1; | |
524 | else | |
525 | vpifparams->video_params.storage_mode = 0; | |
526 | ||
527 | if (1 == vpifparams->std_info.frm_fmt) | |
528 | vpifparams->video_params.hpitch = | |
529 | common->fmt.fmt.pix.bytesperline; | |
530 | else { | |
531 | if ((field == V4L2_FIELD_ANY) | |
532 | || (field == V4L2_FIELD_INTERLACED)) | |
533 | vpifparams->video_params.hpitch = | |
534 | common->fmt.fmt.pix.bytesperline * 2; | |
535 | else | |
536 | vpifparams->video_params.hpitch = | |
537 | common->fmt.fmt.pix.bytesperline; | |
538 | } | |
539 | ||
540 | ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid; | |
541 | } | |
542 | ||
543 | /** | |
544 | * vpif_config_format: configure default frame format in the device | |
545 | * ch : ptr to channel object | |
546 | */ | |
547 | static void vpif_config_format(struct channel_obj *ch) | |
548 | { | |
549 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
550 | ||
551 | vpif_dbg(2, debug, "vpif_config_format\n"); | |
552 | ||
553 | common->fmt.fmt.pix.field = V4L2_FIELD_ANY; | |
554 | if (config_params.numbuffers[ch->channel_id] == 0) | |
555 | common->memory = V4L2_MEMORY_USERPTR; | |
556 | else | |
557 | common->memory = V4L2_MEMORY_MMAP; | |
558 | ||
559 | common->fmt.fmt.pix.sizeimage | |
560 | = config_params.channel_bufsize[ch->channel_id]; | |
561 | ||
562 | if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) | |
563 | common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8; | |
564 | else | |
565 | common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P; | |
566 | common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
567 | } | |
568 | ||
569 | /** | |
570 | * vpif_get_default_field() - Get default field type based on interface | |
571 | * @vpif_params - ptr to vpif params | |
572 | */ | |
573 | static inline enum v4l2_field vpif_get_default_field( | |
574 | struct vpif_interface *iface) | |
575 | { | |
576 | return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE : | |
577 | V4L2_FIELD_INTERLACED; | |
578 | } | |
579 | ||
580 | /** | |
581 | * vpif_check_format() - check given pixel format for compatibility | |
582 | * @ch - channel ptr | |
583 | * @pixfmt - Given pixel format | |
584 | * @update - update the values as per hardware requirement | |
585 | * | |
586 | * Check the application pixel format for S_FMT and update the input | |
587 | * values as per hardware limits for TRY_FMT. The default pixel and | |
588 | * field format is selected based on interface type. | |
589 | */ | |
590 | static int vpif_check_format(struct channel_obj *ch, | |
591 | struct v4l2_pix_format *pixfmt, | |
592 | int update) | |
593 | { | |
594 | struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); | |
595 | struct vpif_params *vpif_params = &ch->vpifparams; | |
596 | enum v4l2_field field = pixfmt->field; | |
597 | u32 sizeimage, hpitch, vpitch; | |
598 | int ret = -EINVAL; | |
599 | ||
600 | vpif_dbg(2, debug, "vpif_check_format\n"); | |
601 | /** | |
602 | * first check for the pixel format. If if_type is Raw bayer, | |
603 | * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only | |
604 | * V4L2_PIX_FMT_YUV422P is supported | |
605 | */ | |
606 | if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) { | |
607 | if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8) { | |
608 | if (!update) { | |
609 | vpif_dbg(2, debug, "invalid pix format\n"); | |
610 | goto exit; | |
611 | } | |
612 | pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8; | |
613 | } | |
614 | } else { | |
615 | if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) { | |
616 | if (!update) { | |
617 | vpif_dbg(2, debug, "invalid pixel format\n"); | |
618 | goto exit; | |
619 | } | |
620 | pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P; | |
621 | } | |
622 | } | |
623 | ||
624 | if (!(VPIF_VALID_FIELD(field))) { | |
625 | if (!update) { | |
626 | vpif_dbg(2, debug, "invalid field format\n"); | |
627 | goto exit; | |
628 | } | |
629 | /** | |
630 | * By default use FIELD_NONE for RAW Bayer capture | |
631 | * and FIELD_INTERLACED for other interfaces | |
632 | */ | |
633 | field = vpif_get_default_field(&vpif_params->iface); | |
634 | } else if (field == V4L2_FIELD_ANY) | |
635 | /* unsupported field. Use default */ | |
636 | field = vpif_get_default_field(&vpif_params->iface); | |
637 | ||
638 | /* validate the hpitch */ | |
639 | hpitch = pixfmt->bytesperline; | |
640 | if (hpitch < vpif_params->std_info.width) { | |
641 | if (!update) { | |
642 | vpif_dbg(2, debug, "invalid hpitch\n"); | |
643 | goto exit; | |
644 | } | |
645 | hpitch = vpif_params->std_info.width; | |
646 | } | |
647 | ||
648 | if (V4L2_MEMORY_USERPTR == common->memory) | |
649 | sizeimage = pixfmt->sizeimage; | |
650 | else | |
651 | sizeimage = config_params.channel_bufsize[ch->channel_id]; | |
652 | ||
653 | vpitch = sizeimage / (hpitch * 2); | |
654 | ||
655 | /* validate the vpitch */ | |
656 | if (vpitch < vpif_params->std_info.height) { | |
657 | if (!update) { | |
658 | vpif_dbg(2, debug, "Invalid vpitch\n"); | |
659 | goto exit; | |
660 | } | |
661 | vpitch = vpif_params->std_info.height; | |
662 | } | |
663 | ||
664 | /* Check for 8 byte alignment */ | |
665 | if (!ALIGN(hpitch, 8)) { | |
666 | if (!update) { | |
667 | vpif_dbg(2, debug, "invalid pitch alignment\n"); | |
668 | goto exit; | |
669 | } | |
670 | /* adjust to next 8 byte boundary */ | |
671 | hpitch = (((hpitch + 7) / 8) * 8); | |
672 | } | |
673 | /* if update is set, modify the bytesperline and sizeimage */ | |
674 | if (update) { | |
675 | pixfmt->bytesperline = hpitch; | |
676 | pixfmt->sizeimage = hpitch * vpitch * 2; | |
677 | } | |
678 | /** | |
679 | * Image width and height is always based on current standard width and | |
680 | * height | |
681 | */ | |
682 | pixfmt->width = common->fmt.fmt.pix.width; | |
683 | pixfmt->height = common->fmt.fmt.pix.height; | |
684 | return 0; | |
685 | exit: | |
686 | return ret; | |
687 | } | |
688 | ||
689 | /** | |
690 | * vpif_config_addr() - function to configure buffer address in vpif | |
691 | * @ch - channel ptr | |
692 | * @muxmode - channel mux mode | |
693 | */ | |
694 | static void vpif_config_addr(struct channel_obj *ch, int muxmode) | |
695 | { | |
696 | struct common_obj *common; | |
697 | ||
698 | vpif_dbg(2, debug, "vpif_config_addr\n"); | |
699 | ||
700 | common = &(ch->common[VPIF_VIDEO_INDEX]); | |
701 | ||
702 | if (VPIF_CHANNEL1_VIDEO == ch->channel_id) | |
703 | common->set_addr = ch1_set_videobuf_addr; | |
704 | else if (2 == muxmode) | |
705 | common->set_addr = ch0_set_videobuf_addr_yc_nmux; | |
706 | else | |
707 | common->set_addr = ch0_set_videobuf_addr; | |
708 | } | |
709 | ||
710 | /** | |
711 | * vpfe_mmap : It is used to map kernel space buffers into user spaces | |
712 | * @filep: file pointer | |
713 | * @vma: ptr to vm_area_struct | |
714 | */ | |
715 | static int vpif_mmap(struct file *filep, struct vm_area_struct *vma) | |
716 | { | |
717 | /* Get the channel object and file handle object */ | |
718 | struct vpif_fh *fh = filep->private_data; | |
719 | struct channel_obj *ch = fh->channel; | |
720 | struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); | |
721 | ||
722 | vpif_dbg(2, debug, "vpif_mmap\n"); | |
723 | ||
724 | return videobuf_mmap_mapper(&common->buffer_queue, vma); | |
725 | } | |
726 | ||
727 | /** | |
728 | * vpif_poll: It is used for select/poll system call | |
729 | * @filep: file pointer | |
730 | * @wait: poll table to wait | |
731 | */ | |
732 | static unsigned int vpif_poll(struct file *filep, poll_table * wait) | |
733 | { | |
734 | int err = 0; | |
735 | struct vpif_fh *fh = filep->private_data; | |
736 | struct channel_obj *channel = fh->channel; | |
737 | struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); | |
738 | ||
739 | vpif_dbg(2, debug, "vpif_poll\n"); | |
740 | ||
741 | if (common->started) | |
742 | err = videobuf_poll_stream(filep, &common->buffer_queue, wait); | |
743 | ||
744 | return 0; | |
745 | } | |
746 | ||
747 | /** | |
748 | * vpif_open : vpif open handler | |
749 | * @filep: file ptr | |
750 | * | |
751 | * It creates object of file handle structure and stores it in private_data | |
752 | * member of filepointer | |
753 | */ | |
754 | static int vpif_open(struct file *filep) | |
755 | { | |
756 | struct vpif_capture_config *config = vpif_dev->platform_data; | |
757 | struct video_device *vdev = video_devdata(filep); | |
758 | struct common_obj *common; | |
759 | struct video_obj *vid_ch; | |
760 | struct channel_obj *ch; | |
761 | struct vpif_fh *fh; | |
762 | int i, ret = 0; | |
763 | ||
764 | vpif_dbg(2, debug, "vpif_open\n"); | |
765 | ||
766 | ch = video_get_drvdata(vdev); | |
767 | ||
768 | vid_ch = &ch->video; | |
769 | common = &ch->common[VPIF_VIDEO_INDEX]; | |
770 | ||
771 | if (mutex_lock_interruptible(&common->lock)) | |
772 | return -ERESTARTSYS; | |
773 | ||
774 | if (NULL == ch->curr_subdev_info) { | |
775 | /** | |
776 | * search through the sub device to see a registered | |
777 | * sub device and make it as current sub device | |
778 | */ | |
779 | for (i = 0; i < config->subdev_count; i++) { | |
780 | if (vpif_obj.sd[i]) { | |
781 | /* the sub device is registered */ | |
782 | ch->curr_subdev_info = &config->subdev_info[i]; | |
783 | /* make first input as the current input */ | |
784 | vid_ch->input_idx = 0; | |
785 | break; | |
786 | } | |
787 | } | |
788 | if (i == config->subdev_count) { | |
789 | vpif_err("No sub device registered\n"); | |
790 | ret = -ENOENT; | |
791 | goto exit; | |
792 | } | |
793 | } | |
794 | ||
795 | /* Allocate memory for the file handle object */ | |
796 | fh = kmalloc(sizeof(struct vpif_fh), GFP_KERNEL); | |
797 | if (NULL == fh) { | |
798 | vpif_err("unable to allocate memory for file handle object\n"); | |
799 | ret = -ENOMEM; | |
800 | goto exit; | |
801 | } | |
802 | ||
803 | /* store pointer to fh in private_data member of filep */ | |
804 | filep->private_data = fh; | |
805 | fh->channel = ch; | |
806 | fh->initialized = 0; | |
807 | /* If decoder is not initialized. initialize it */ | |
808 | if (!ch->initialized) { | |
809 | fh->initialized = 1; | |
810 | ch->initialized = 1; | |
811 | memset(&(ch->vpifparams), 0, sizeof(struct vpif_params)); | |
812 | } | |
813 | /* Increment channel usrs counter */ | |
814 | ch->usrs++; | |
815 | /* Set io_allowed member to false */ | |
816 | fh->io_allowed[VPIF_VIDEO_INDEX] = 0; | |
817 | /* Initialize priority of this instance to default priority */ | |
818 | fh->prio = V4L2_PRIORITY_UNSET; | |
819 | v4l2_prio_open(&ch->prio, &fh->prio); | |
820 | exit: | |
821 | mutex_unlock(&common->lock); | |
822 | return ret; | |
823 | } | |
824 | ||
825 | /** | |
826 | * vpif_release : function to clean up file close | |
827 | * @filep: file pointer | |
828 | * | |
829 | * This function deletes buffer queue, frees the buffers and the vpfe file | |
830 | * handle | |
831 | */ | |
832 | static int vpif_release(struct file *filep) | |
833 | { | |
834 | struct vpif_fh *fh = filep->private_data; | |
835 | struct channel_obj *ch = fh->channel; | |
836 | struct common_obj *common; | |
837 | ||
838 | vpif_dbg(2, debug, "vpif_release\n"); | |
839 | ||
840 | common = &ch->common[VPIF_VIDEO_INDEX]; | |
841 | ||
842 | if (mutex_lock_interruptible(&common->lock)) | |
843 | return -ERESTARTSYS; | |
844 | ||
845 | /* if this instance is doing IO */ | |
846 | if (fh->io_allowed[VPIF_VIDEO_INDEX]) { | |
847 | /* Reset io_usrs member of channel object */ | |
848 | common->io_usrs = 0; | |
849 | /* Disable channel as per its device type and channel id */ | |
850 | if (VPIF_CHANNEL0_VIDEO == ch->channel_id) { | |
851 | enable_channel0(0); | |
852 | channel0_intr_enable(0); | |
853 | } | |
854 | if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) || | |
855 | (2 == common->started)) { | |
856 | enable_channel1(0); | |
857 | channel1_intr_enable(0); | |
858 | } | |
859 | common->started = 0; | |
860 | /* Free buffers allocated */ | |
861 | videobuf_queue_cancel(&common->buffer_queue); | |
862 | videobuf_mmap_free(&common->buffer_queue); | |
863 | } | |
864 | ||
865 | /* Decrement channel usrs counter */ | |
866 | ch->usrs--; | |
867 | ||
868 | /* unlock mutex on channel object */ | |
869 | mutex_unlock(&common->lock); | |
870 | ||
871 | /* Close the priority */ | |
872 | v4l2_prio_close(&ch->prio, &fh->prio); | |
873 | ||
874 | if (fh->initialized) | |
875 | ch->initialized = 0; | |
876 | ||
877 | filep->private_data = NULL; | |
878 | kfree(fh); | |
879 | return 0; | |
880 | } | |
881 | ||
882 | /** | |
883 | * vpif_reqbufs() - request buffer handler | |
884 | * @file: file ptr | |
885 | * @priv: file handle | |
886 | * @reqbuf: request buffer structure ptr | |
887 | */ | |
888 | static int vpif_reqbufs(struct file *file, void *priv, | |
889 | struct v4l2_requestbuffers *reqbuf) | |
890 | { | |
891 | struct vpif_fh *fh = priv; | |
892 | struct channel_obj *ch = fh->channel; | |
893 | struct common_obj *common; | |
894 | u8 index = 0; | |
895 | int ret = 0; | |
896 | ||
897 | vpif_dbg(2, debug, "vpif_reqbufs\n"); | |
898 | ||
899 | /** | |
900 | * This file handle has not initialized the channel, | |
901 | * It is not allowed to do settings | |
902 | */ | |
903 | if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) | |
904 | || (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { | |
905 | if (!fh->initialized) { | |
906 | vpif_dbg(1, debug, "Channel Busy\n"); | |
907 | return -EBUSY; | |
908 | } | |
909 | } | |
910 | ||
911 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != reqbuf->type) | |
912 | return -EINVAL; | |
913 | ||
914 | index = VPIF_VIDEO_INDEX; | |
915 | ||
916 | common = &ch->common[index]; | |
917 | ||
918 | if (mutex_lock_interruptible(&common->lock)) | |
919 | return -ERESTARTSYS; | |
920 | ||
921 | if (0 != common->io_usrs) { | |
922 | ret = -EBUSY; | |
923 | goto reqbuf_exit; | |
924 | } | |
925 | ||
926 | /* Initialize videobuf queue as per the buffer type */ | |
927 | videobuf_queue_dma_contig_init(&common->buffer_queue, | |
928 | &video_qops, NULL, | |
929 | &common->irqlock, | |
930 | reqbuf->type, | |
931 | common->fmt.fmt.pix.field, | |
932 | sizeof(struct videobuf_buffer), fh); | |
933 | ||
934 | /* Set io allowed member of file handle to TRUE */ | |
935 | fh->io_allowed[index] = 1; | |
936 | /* Increment io usrs member of channel object to 1 */ | |
937 | common->io_usrs = 1; | |
938 | /* Store type of memory requested in channel object */ | |
939 | common->memory = reqbuf->memory; | |
940 | INIT_LIST_HEAD(&common->dma_queue); | |
941 | ||
942 | /* Allocate buffers */ | |
943 | ret = videobuf_reqbufs(&common->buffer_queue, reqbuf); | |
944 | ||
945 | reqbuf_exit: | |
946 | mutex_unlock(&common->lock); | |
947 | return ret; | |
948 | } | |
949 | ||
950 | /** | |
951 | * vpif_querybuf() - query buffer handler | |
952 | * @file: file ptr | |
953 | * @priv: file handle | |
954 | * @buf: v4l2 buffer structure ptr | |
955 | */ | |
956 | static int vpif_querybuf(struct file *file, void *priv, | |
957 | struct v4l2_buffer *buf) | |
958 | { | |
959 | struct vpif_fh *fh = priv; | |
960 | struct channel_obj *ch = fh->channel; | |
961 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
962 | ||
963 | vpif_dbg(2, debug, "vpif_querybuf\n"); | |
964 | ||
965 | if (common->fmt.type != buf->type) | |
966 | return -EINVAL; | |
967 | ||
968 | if (common->memory != V4L2_MEMORY_MMAP) { | |
969 | vpif_dbg(1, debug, "Invalid memory\n"); | |
970 | return -EINVAL; | |
971 | } | |
972 | ||
973 | return videobuf_querybuf(&common->buffer_queue, buf); | |
974 | } | |
975 | ||
976 | /** | |
977 | * vpif_qbuf() - query buffer handler | |
978 | * @file: file ptr | |
979 | * @priv: file handle | |
980 | * @buf: v4l2 buffer structure ptr | |
981 | */ | |
982 | static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
983 | { | |
984 | ||
985 | struct vpif_fh *fh = priv; | |
986 | struct channel_obj *ch = fh->channel; | |
987 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
988 | struct v4l2_buffer tbuf = *buf; | |
989 | struct videobuf_buffer *buf1; | |
990 | unsigned long addr = 0; | |
991 | unsigned long flags; | |
992 | int ret = 0; | |
993 | ||
994 | vpif_dbg(2, debug, "vpif_qbuf\n"); | |
995 | ||
996 | if (common->fmt.type != tbuf.type) { | |
997 | vpif_err("invalid buffer type\n"); | |
998 | return -EINVAL; | |
999 | } | |
1000 | ||
1001 | if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { | |
1002 | vpif_err("fh io not allowed \n"); | |
1003 | return -EACCES; | |
1004 | } | |
1005 | ||
1006 | if (!(list_empty(&common->dma_queue)) || | |
1007 | (common->cur_frm != common->next_frm) || | |
1008 | !common->started || | |
1009 | (common->started && (0 == ch->field_id))) | |
1010 | return videobuf_qbuf(&common->buffer_queue, buf); | |
1011 | ||
1012 | /* bufferqueue is empty store buffer address in VPIF registers */ | |
1013 | mutex_lock(&common->buffer_queue.vb_lock); | |
1014 | buf1 = common->buffer_queue.bufs[tbuf.index]; | |
1015 | ||
1016 | if ((buf1->state == VIDEOBUF_QUEUED) || | |
1017 | (buf1->state == VIDEOBUF_ACTIVE)) { | |
1018 | vpif_err("invalid state\n"); | |
1019 | goto qbuf_exit; | |
1020 | } | |
1021 | ||
1022 | switch (buf1->memory) { | |
1023 | case V4L2_MEMORY_MMAP: | |
1024 | if (buf1->baddr == 0) | |
1025 | goto qbuf_exit; | |
1026 | break; | |
1027 | ||
1028 | case V4L2_MEMORY_USERPTR: | |
1029 | if (tbuf.length < buf1->bsize) | |
1030 | goto qbuf_exit; | |
1031 | ||
1032 | if ((VIDEOBUF_NEEDS_INIT != buf1->state) | |
1033 | && (buf1->baddr != tbuf.m.userptr)) | |
1034 | vpif_buffer_release(&common->buffer_queue, buf1); | |
1035 | buf1->baddr = tbuf.m.userptr; | |
1036 | break; | |
1037 | ||
1038 | default: | |
1039 | goto qbuf_exit; | |
1040 | } | |
1041 | ||
1042 | local_irq_save(flags); | |
1043 | ret = vpif_buffer_prepare(&common->buffer_queue, buf1, | |
1044 | common->buffer_queue.field); | |
1045 | if (ret < 0) { | |
1046 | local_irq_restore(flags); | |
1047 | goto qbuf_exit; | |
1048 | } | |
1049 | ||
1050 | buf1->state = VIDEOBUF_ACTIVE; | |
1051 | ||
1052 | if (V4L2_MEMORY_USERPTR == common->memory) | |
1053 | addr = buf1->boff; | |
1054 | else | |
1055 | addr = videobuf_to_dma_contig(buf1); | |
1056 | ||
1057 | common->next_frm = buf1; | |
1058 | common->set_addr(addr + common->ytop_off, | |
1059 | addr + common->ybtm_off, | |
1060 | addr + common->ctop_off, | |
1061 | addr + common->cbtm_off); | |
1062 | ||
1063 | local_irq_restore(flags); | |
1064 | list_add_tail(&buf1->stream, &common->buffer_queue.stream); | |
1065 | mutex_unlock(&common->buffer_queue.vb_lock); | |
1066 | return 0; | |
1067 | ||
1068 | qbuf_exit: | |
1069 | mutex_unlock(&common->buffer_queue.vb_lock); | |
1070 | return -EINVAL; | |
1071 | } | |
1072 | ||
1073 | /** | |
1074 | * vpif_dqbuf() - query buffer handler | |
1075 | * @file: file ptr | |
1076 | * @priv: file handle | |
1077 | * @buf: v4l2 buffer structure ptr | |
1078 | */ | |
1079 | static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
1080 | { | |
1081 | struct vpif_fh *fh = priv; | |
1082 | struct channel_obj *ch = fh->channel; | |
1083 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
1084 | ||
1085 | vpif_dbg(2, debug, "vpif_dqbuf\n"); | |
1086 | ||
1087 | return videobuf_dqbuf(&common->buffer_queue, buf, | |
1088 | file->f_flags & O_NONBLOCK); | |
1089 | } | |
1090 | ||
1091 | /** | |
1092 | * vpif_streamon() - streamon handler | |
1093 | * @file: file ptr | |
1094 | * @priv: file handle | |
1095 | * @buftype: v4l2 buffer type | |
1096 | */ | |
1097 | static int vpif_streamon(struct file *file, void *priv, | |
1098 | enum v4l2_buf_type buftype) | |
1099 | { | |
1100 | ||
1101 | struct vpif_capture_config *config = vpif_dev->platform_data; | |
1102 | struct vpif_fh *fh = priv; | |
1103 | struct channel_obj *ch = fh->channel; | |
1104 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
1105 | struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id]; | |
1106 | struct vpif_params *vpif; | |
1107 | unsigned long addr = 0; | |
1108 | int ret = 0; | |
1109 | ||
1110 | vpif_dbg(2, debug, "vpif_streamon\n"); | |
1111 | ||
1112 | vpif = &ch->vpifparams; | |
1113 | ||
1114 | if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1115 | vpif_dbg(1, debug, "buffer type not supported\n"); | |
1116 | return -EINVAL; | |
1117 | } | |
1118 | ||
1119 | /* If file handle is not allowed IO, return error */ | |
1120 | if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { | |
1121 | vpif_dbg(1, debug, "io not allowed\n"); | |
1122 | return -EACCES; | |
1123 | } | |
1124 | ||
1125 | /* If Streaming is already started, return error */ | |
1126 | if (common->started) { | |
1127 | vpif_dbg(1, debug, "channel->started\n"); | |
1128 | return -EBUSY; | |
1129 | } | |
1130 | ||
1131 | if ((ch->channel_id == VPIF_CHANNEL0_VIDEO && | |
1132 | oth_ch->common[VPIF_VIDEO_INDEX].started && | |
1133 | vpif->std_info.ycmux_mode == 0) || | |
1134 | ((ch->channel_id == VPIF_CHANNEL1_VIDEO) && | |
1135 | (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) { | |
1136 | vpif_dbg(1, debug, "other channel is being used\n"); | |
1137 | return -EBUSY; | |
1138 | } | |
1139 | ||
1140 | ret = vpif_check_format(ch, &common->fmt.fmt.pix, 0); | |
1141 | if (ret) | |
1142 | return ret; | |
1143 | ||
1144 | /* Enable streamon on the sub device */ | |
1145 | ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video, | |
1146 | s_stream, 1); | |
1147 | ||
1148 | if (ret && (ret != -ENOIOCTLCMD)) { | |
1149 | vpif_dbg(1, debug, "stream on failed in subdev\n"); | |
1150 | return ret; | |
1151 | } | |
1152 | ||
1153 | /* Call videobuf_streamon to start streaming in videobuf */ | |
1154 | ret = videobuf_streamon(&common->buffer_queue); | |
1155 | if (ret) { | |
1156 | vpif_dbg(1, debug, "videobuf_streamon\n"); | |
1157 | return ret; | |
1158 | } | |
1159 | ||
1160 | if (mutex_lock_interruptible(&common->lock)) { | |
1161 | ret = -ERESTARTSYS; | |
1162 | goto streamoff_exit; | |
1163 | } | |
1164 | ||
1165 | /* If buffer queue is empty, return error */ | |
1166 | if (list_empty(&common->dma_queue)) { | |
1167 | vpif_dbg(1, debug, "buffer queue is empty\n"); | |
1168 | ret = -EIO; | |
1169 | goto exit; | |
1170 | } | |
1171 | ||
1172 | /* Get the next frame from the buffer queue */ | |
1173 | common->cur_frm = list_entry(common->dma_queue.next, | |
1174 | struct videobuf_buffer, queue); | |
1175 | common->next_frm = common->cur_frm; | |
1176 | ||
1177 | /* Remove buffer from the buffer queue */ | |
1178 | list_del(&common->cur_frm->queue); | |
1179 | /* Mark state of the current frame to active */ | |
1180 | common->cur_frm->state = VIDEOBUF_ACTIVE; | |
1181 | /* Initialize field_id and started member */ | |
1182 | ch->field_id = 0; | |
1183 | common->started = 1; | |
1184 | ||
1185 | if (V4L2_MEMORY_USERPTR == common->memory) | |
1186 | addr = common->cur_frm->boff; | |
1187 | else | |
1188 | addr = videobuf_to_dma_contig(common->cur_frm); | |
1189 | ||
1190 | /* Calculate the offset for Y and C data in the buffer */ | |
1191 | vpif_calculate_offsets(ch); | |
1192 | ||
1193 | if ((vpif->std_info.frm_fmt && | |
1194 | ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE) && | |
1195 | (common->fmt.fmt.pix.field != V4L2_FIELD_ANY))) || | |
1196 | (!vpif->std_info.frm_fmt && | |
1197 | (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) { | |
1198 | vpif_dbg(1, debug, "conflict in field format and std format\n"); | |
1199 | ret = -EINVAL; | |
1200 | goto exit; | |
1201 | } | |
1202 | ||
1203 | /* configure 1 or 2 channel mode */ | |
1204 | ret = config->setup_input_channel_mode(vpif->std_info.ycmux_mode); | |
1205 | ||
1206 | if (ret < 0) { | |
1207 | vpif_dbg(1, debug, "can't set vpif channel mode\n"); | |
1208 | goto exit; | |
1209 | } | |
1210 | ||
1211 | /* Call vpif_set_params function to set the parameters and addresses */ | |
1212 | ret = vpif_set_video_params(vpif, ch->channel_id); | |
1213 | ||
1214 | if (ret < 0) { | |
1215 | vpif_dbg(1, debug, "can't set video params\n"); | |
1216 | goto exit; | |
1217 | } | |
1218 | ||
1219 | common->started = ret; | |
1220 | vpif_config_addr(ch, ret); | |
1221 | ||
1222 | common->set_addr(addr + common->ytop_off, | |
1223 | addr + common->ybtm_off, | |
1224 | addr + common->ctop_off, | |
1225 | addr + common->cbtm_off); | |
1226 | ||
1227 | /** | |
1228 | * Set interrupt for both the fields in VPIF Register enable channel in | |
1229 | * VPIF register | |
1230 | */ | |
1231 | if ((VPIF_CHANNEL0_VIDEO == ch->channel_id)) { | |
1232 | channel0_intr_assert(); | |
1233 | channel0_intr_enable(1); | |
1234 | enable_channel0(1); | |
1235 | } | |
1236 | if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) || | |
1237 | (common->started == 2)) { | |
1238 | channel1_intr_assert(); | |
1239 | channel1_intr_enable(1); | |
1240 | enable_channel1(1); | |
1241 | } | |
1242 | channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1; | |
1243 | mutex_unlock(&common->lock); | |
1244 | return ret; | |
1245 | ||
1246 | exit: | |
1247 | mutex_unlock(&common->lock); | |
1248 | streamoff_exit: | |
1249 | ret = videobuf_streamoff(&common->buffer_queue); | |
1250 | return ret; | |
1251 | } | |
1252 | ||
1253 | /** | |
1254 | * vpif_streamoff() - streamoff handler | |
1255 | * @file: file ptr | |
1256 | * @priv: file handle | |
1257 | * @buftype: v4l2 buffer type | |
1258 | */ | |
1259 | static int vpif_streamoff(struct file *file, void *priv, | |
1260 | enum v4l2_buf_type buftype) | |
1261 | { | |
1262 | ||
1263 | struct vpif_fh *fh = priv; | |
1264 | struct channel_obj *ch = fh->channel; | |
1265 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
1266 | int ret; | |
1267 | ||
1268 | vpif_dbg(2, debug, "vpif_streamoff\n"); | |
1269 | ||
1270 | if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1271 | vpif_dbg(1, debug, "buffer type not supported\n"); | |
1272 | return -EINVAL; | |
1273 | } | |
1274 | ||
1275 | /* If io is allowed for this file handle, return error */ | |
1276 | if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { | |
1277 | vpif_dbg(1, debug, "io not allowed\n"); | |
1278 | return -EACCES; | |
1279 | } | |
1280 | ||
1281 | /* If streaming is not started, return error */ | |
1282 | if (!common->started) { | |
1283 | vpif_dbg(1, debug, "channel->started\n"); | |
1284 | return -EINVAL; | |
1285 | } | |
1286 | ||
1287 | if (mutex_lock_interruptible(&common->lock)) | |
1288 | return -ERESTARTSYS; | |
1289 | ||
1290 | /* disable channel */ | |
1291 | if (VPIF_CHANNEL0_VIDEO == ch->channel_id) { | |
1292 | enable_channel0(0); | |
1293 | channel0_intr_enable(0); | |
1294 | } else { | |
1295 | enable_channel1(0); | |
1296 | channel1_intr_enable(0); | |
1297 | } | |
1298 | ||
1299 | common->started = 0; | |
1300 | ||
1301 | ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video, | |
1302 | s_stream, 0); | |
1303 | ||
1304 | if (ret && (ret != -ENOIOCTLCMD)) | |
1305 | vpif_dbg(1, debug, "stream off failed in subdev\n"); | |
1306 | ||
1307 | mutex_unlock(&common->lock); | |
1308 | ||
1309 | return videobuf_streamoff(&common->buffer_queue); | |
1310 | } | |
1311 | ||
1312 | /** | |
1313 | * vpif_map_sub_device_to_input() - Maps sub device to input | |
1314 | * @ch - ptr to channel | |
1315 | * @config - ptr to capture configuration | |
1316 | * @input_index - Given input index from application | |
1317 | * @sub_device_index - index into sd table | |
1318 | * | |
1319 | * lookup the sub device information for a given input index. | |
1320 | * we report all the inputs to application. inputs table also | |
1321 | * has sub device name for the each input | |
1322 | */ | |
1323 | static struct vpif_subdev_info *vpif_map_sub_device_to_input( | |
1324 | struct channel_obj *ch, | |
1325 | struct vpif_capture_config *vpif_cfg, | |
1326 | int input_index, | |
1327 | int *sub_device_index) | |
1328 | { | |
1329 | struct vpif_capture_chan_config *chan_cfg; | |
1330 | struct vpif_subdev_info *subdev_info = NULL; | |
1331 | const char *subdev_name = NULL; | |
1332 | int i; | |
1333 | ||
1334 | vpif_dbg(2, debug, "vpif_map_sub_device_to_input\n"); | |
1335 | ||
1336 | chan_cfg = &vpif_cfg->chan_config[ch->channel_id]; | |
1337 | ||
1338 | /** | |
1339 | * search through the inputs to find the sub device supporting | |
1340 | * the input | |
1341 | */ | |
1342 | for (i = 0; i < chan_cfg->input_count; i++) { | |
1343 | /* For each sub device, loop through input */ | |
1344 | if (i == input_index) { | |
1345 | subdev_name = chan_cfg->inputs[i].subdev_name; | |
1346 | break; | |
1347 | } | |
1348 | } | |
1349 | ||
1350 | /* if reached maximum. return null */ | |
1351 | if (i == chan_cfg->input_count || (NULL == subdev_name)) | |
1352 | return subdev_info; | |
1353 | ||
1354 | /* loop through the sub device list to get the sub device info */ | |
1355 | for (i = 0; i < vpif_cfg->subdev_count; i++) { | |
1356 | subdev_info = &vpif_cfg->subdev_info[i]; | |
1357 | if (!strcmp(subdev_info->name, subdev_name)) | |
1358 | break; | |
1359 | } | |
1360 | ||
1361 | if (i == vpif_cfg->subdev_count) | |
1362 | return subdev_info; | |
1363 | ||
1364 | /* check if the sub device is registered */ | |
1365 | if (NULL == vpif_obj.sd[i]) | |
1366 | return NULL; | |
1367 | ||
1368 | *sub_device_index = i; | |
1369 | return subdev_info; | |
1370 | } | |
1371 | ||
1372 | /** | |
1373 | * vpif_querystd() - querystd handler | |
1374 | * @file: file ptr | |
1375 | * @priv: file handle | |
1376 | * @std_id: ptr to std id | |
1377 | * | |
1378 | * This function is called to detect standard at the selected input | |
1379 | */ | |
1380 | static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id) | |
1381 | { | |
1382 | struct vpif_fh *fh = priv; | |
1383 | struct channel_obj *ch = fh->channel; | |
1384 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
1385 | int ret = 0; | |
1386 | ||
1387 | vpif_dbg(2, debug, "vpif_querystd\n"); | |
1388 | ||
1389 | if (mutex_lock_interruptible(&common->lock)) | |
1390 | return -ERESTARTSYS; | |
1391 | ||
1392 | /* Call querystd function of decoder device */ | |
1393 | ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video, | |
1394 | querystd, std_id); | |
1395 | if (ret < 0) | |
1396 | vpif_dbg(1, debug, "Failed to set standard for sub devices\n"); | |
1397 | ||
1398 | mutex_unlock(&common->lock); | |
1399 | return ret; | |
1400 | } | |
1401 | ||
1402 | /** | |
1403 | * vpif_g_std() - get STD handler | |
1404 | * @file: file ptr | |
1405 | * @priv: file handle | |
1406 | * @std_id: ptr to std id | |
1407 | */ | |
1408 | static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std) | |
1409 | { | |
1410 | struct vpif_fh *fh = priv; | |
1411 | struct channel_obj *ch = fh->channel; | |
1412 | ||
1413 | vpif_dbg(2, debug, "vpif_g_std\n"); | |
1414 | ||
1415 | *std = ch->video.stdid; | |
1416 | return 0; | |
1417 | } | |
1418 | ||
1419 | /** | |
1420 | * vpif_s_std() - set STD handler | |
1421 | * @file: file ptr | |
1422 | * @priv: file handle | |
1423 | * @std_id: ptr to std id | |
1424 | */ | |
1425 | static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id) | |
1426 | { | |
1427 | struct vpif_fh *fh = priv; | |
1428 | struct channel_obj *ch = fh->channel; | |
1429 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
1430 | int ret = 0; | |
1431 | ||
1432 | vpif_dbg(2, debug, "vpif_s_std\n"); | |
1433 | ||
1434 | if (common->started) { | |
1435 | vpif_err("streaming in progress\n"); | |
1436 | return -EBUSY; | |
1437 | } | |
1438 | ||
1439 | if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || | |
1440 | (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { | |
1441 | if (!fh->initialized) { | |
1442 | vpif_dbg(1, debug, "Channel Busy\n"); | |
1443 | return -EBUSY; | |
1444 | } | |
1445 | } | |
1446 | ||
1447 | ret = v4l2_prio_check(&ch->prio, &fh->prio); | |
1448 | if (0 != ret) | |
1449 | return ret; | |
1450 | ||
1451 | fh->initialized = 1; | |
1452 | ||
1453 | /* Call encoder subdevice function to set the standard */ | |
1454 | if (mutex_lock_interruptible(&common->lock)) | |
1455 | return -ERESTARTSYS; | |
1456 | ||
1457 | ch->video.stdid = *std_id; | |
1458 | ||
1459 | /* Get the information about the standard */ | |
1460 | if (vpif_update_std_info(ch)) { | |
1461 | ret = -EINVAL; | |
1462 | vpif_err("Error getting the standard info\n"); | |
1463 | goto s_std_exit; | |
1464 | } | |
1465 | ||
1466 | /* Configure the default format information */ | |
1467 | vpif_config_format(ch); | |
1468 | ||
1469 | /* set standard in the sub device */ | |
1470 | ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core, | |
1471 | s_std, *std_id); | |
1472 | if (ret < 0) | |
1473 | vpif_dbg(1, debug, "Failed to set standard for sub devices\n"); | |
1474 | ||
1475 | s_std_exit: | |
1476 | mutex_unlock(&common->lock); | |
1477 | return ret; | |
1478 | } | |
1479 | ||
1480 | /** | |
1481 | * vpif_enum_input() - ENUMINPUT handler | |
1482 | * @file: file ptr | |
1483 | * @priv: file handle | |
1484 | * @input: ptr to input structure | |
1485 | */ | |
1486 | static int vpif_enum_input(struct file *file, void *priv, | |
1487 | struct v4l2_input *input) | |
1488 | { | |
1489 | ||
1490 | struct vpif_capture_config *config = vpif_dev->platform_data; | |
1491 | struct vpif_capture_chan_config *chan_cfg; | |
1492 | struct vpif_fh *fh = priv; | |
1493 | struct channel_obj *ch = fh->channel; | |
1494 | ||
1495 | chan_cfg = &config->chan_config[ch->channel_id]; | |
1496 | ||
1497 | if (input->index >= chan_cfg->input_count) { | |
1498 | vpif_dbg(1, debug, "Invalid input index\n"); | |
1499 | return -EINVAL; | |
1500 | } | |
1501 | ||
1502 | memcpy(input, &chan_cfg->inputs[input->index].input, | |
1503 | sizeof(*input)); | |
1504 | return 0; | |
1505 | } | |
1506 | ||
1507 | /** | |
1508 | * vpif_g_input() - Get INPUT handler | |
1509 | * @file: file ptr | |
1510 | * @priv: file handle | |
1511 | * @index: ptr to input index | |
1512 | */ | |
1513 | static int vpif_g_input(struct file *file, void *priv, unsigned int *index) | |
1514 | { | |
1515 | struct vpif_fh *fh = priv; | |
1516 | struct channel_obj *ch = fh->channel; | |
1517 | struct video_obj *vid_ch = &ch->video; | |
1518 | ||
1519 | *index = vid_ch->input_idx; | |
1520 | ||
1521 | return 0; | |
1522 | } | |
1523 | ||
1524 | /** | |
1525 | * vpif_s_input() - Set INPUT handler | |
1526 | * @file: file ptr | |
1527 | * @priv: file handle | |
1528 | * @index: input index | |
1529 | */ | |
1530 | static int vpif_s_input(struct file *file, void *priv, unsigned int index) | |
1531 | { | |
1532 | struct vpif_capture_config *config = vpif_dev->platform_data; | |
1533 | struct vpif_capture_chan_config *chan_cfg; | |
1534 | struct vpif_fh *fh = priv; | |
1535 | struct channel_obj *ch = fh->channel; | |
1536 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
1537 | struct video_obj *vid_ch = &ch->video; | |
1538 | struct vpif_subdev_info *subdev_info; | |
1539 | int ret = 0, sd_index = 0; | |
1540 | u32 input = 0, output = 0; | |
1541 | ||
1542 | chan_cfg = &config->chan_config[ch->channel_id]; | |
1543 | ||
1544 | if (common->started) { | |
1545 | vpif_err("Streaming in progress\n"); | |
1546 | return -EBUSY; | |
1547 | } | |
1548 | ||
1549 | if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || | |
1550 | (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { | |
1551 | if (!fh->initialized) { | |
1552 | vpif_dbg(1, debug, "Channel Busy\n"); | |
1553 | return -EBUSY; | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | ret = v4l2_prio_check(&ch->prio, &fh->prio); | |
1558 | if (0 != ret) | |
1559 | return ret; | |
1560 | ||
1561 | fh->initialized = 1; | |
1562 | subdev_info = vpif_map_sub_device_to_input(ch, config, index, | |
1563 | &sd_index); | |
1564 | if (NULL == subdev_info) { | |
1565 | vpif_dbg(1, debug, | |
1566 | "couldn't lookup sub device for the input index\n"); | |
1567 | return -EINVAL; | |
1568 | } | |
1569 | ||
1570 | if (mutex_lock_interruptible(&common->lock)) | |
1571 | return -ERESTARTSYS; | |
1572 | ||
1573 | /* first setup input path from sub device to vpif */ | |
1574 | if (config->setup_input_path) { | |
1575 | ret = config->setup_input_path(ch->channel_id, | |
1576 | subdev_info->name); | |
1577 | if (ret < 0) { | |
1578 | vpif_dbg(1, debug, "couldn't setup input path for the" | |
1579 | " sub device %s, for input index %d\n", | |
1580 | subdev_info->name, index); | |
1581 | goto exit; | |
1582 | } | |
1583 | } | |
1584 | ||
1585 | if (subdev_info->can_route) { | |
1586 | input = subdev_info->input; | |
1587 | output = subdev_info->output; | |
1588 | ret = v4l2_subdev_call(vpif_obj.sd[sd_index], video, s_routing, | |
1589 | input, output, 0); | |
1590 | if (ret < 0) { | |
1591 | vpif_dbg(1, debug, "Failed to set input\n"); | |
1592 | goto exit; | |
1593 | } | |
1594 | } | |
1595 | vid_ch->input_idx = index; | |
1596 | ch->curr_subdev_info = subdev_info; | |
1597 | ch->curr_sd_index = sd_index; | |
1598 | /* copy interface parameters to vpif */ | |
1599 | ch->vpifparams.iface = subdev_info->vpif_if; | |
1600 | ||
1601 | /* update tvnorms from the sub device input info */ | |
1602 | ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std; | |
1603 | ||
1604 | exit: | |
1605 | mutex_unlock(&common->lock); | |
1606 | return ret; | |
1607 | } | |
1608 | ||
1609 | /** | |
1610 | * vpif_enum_fmt_vid_cap() - ENUM_FMT handler | |
1611 | * @file: file ptr | |
1612 | * @priv: file handle | |
1613 | * @index: input index | |
1614 | */ | |
1615 | static int vpif_enum_fmt_vid_cap(struct file *file, void *priv, | |
1616 | struct v4l2_fmtdesc *fmt) | |
1617 | { | |
1618 | struct vpif_fh *fh = priv; | |
1619 | struct channel_obj *ch = fh->channel; | |
1620 | ||
1621 | if (fmt->index != 0) { | |
1622 | vpif_dbg(1, debug, "Invalid format index\n"); | |
1623 | return -EINVAL; | |
1624 | } | |
1625 | ||
1626 | /* Fill in the information about format */ | |
1627 | if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) { | |
1628 | fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1629 | strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb"); | |
1630 | fmt->pixelformat = V4L2_PIX_FMT_SBGGR8; | |
1631 | } else { | |
1632 | fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1633 | strcpy(fmt->description, "YCbCr4:2:2 YC Planar"); | |
1634 | fmt->pixelformat = V4L2_PIX_FMT_YUV422P; | |
1635 | } | |
1636 | return 0; | |
1637 | } | |
1638 | ||
1639 | /** | |
1640 | * vpif_try_fmt_vid_cap() - TRY_FMT handler | |
1641 | * @file: file ptr | |
1642 | * @priv: file handle | |
1643 | * @fmt: ptr to v4l2 format structure | |
1644 | */ | |
1645 | static int vpif_try_fmt_vid_cap(struct file *file, void *priv, | |
1646 | struct v4l2_format *fmt) | |
1647 | { | |
1648 | struct vpif_fh *fh = priv; | |
1649 | struct channel_obj *ch = fh->channel; | |
1650 | struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; | |
1651 | ||
1652 | return vpif_check_format(ch, pixfmt, 1); | |
1653 | } | |
1654 | ||
1655 | ||
1656 | /** | |
1657 | * vpif_g_fmt_vid_cap() - Set INPUT handler | |
1658 | * @file: file ptr | |
1659 | * @priv: file handle | |
1660 | * @fmt: ptr to v4l2 format structure | |
1661 | */ | |
1662 | static int vpif_g_fmt_vid_cap(struct file *file, void *priv, | |
1663 | struct v4l2_format *fmt) | |
1664 | { | |
1665 | struct vpif_fh *fh = priv; | |
1666 | struct channel_obj *ch = fh->channel; | |
1667 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
1668 | ||
1669 | /* Check the validity of the buffer type */ | |
1670 | if (common->fmt.type != fmt->type) | |
1671 | return -EINVAL; | |
1672 | ||
1673 | /* Fill in the information about format */ | |
1674 | if (mutex_lock_interruptible(&common->lock)) | |
1675 | return -ERESTARTSYS; | |
1676 | ||
1677 | *fmt = common->fmt; | |
1678 | mutex_unlock(&common->lock); | |
1679 | return 0; | |
1680 | } | |
1681 | ||
1682 | /** | |
1683 | * vpif_s_fmt_vid_cap() - Set FMT handler | |
1684 | * @file: file ptr | |
1685 | * @priv: file handle | |
1686 | * @fmt: ptr to v4l2 format structure | |
1687 | */ | |
1688 | static int vpif_s_fmt_vid_cap(struct file *file, void *priv, | |
1689 | struct v4l2_format *fmt) | |
1690 | { | |
1691 | struct vpif_fh *fh = priv; | |
1692 | struct channel_obj *ch = fh->channel; | |
1693 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
1694 | struct v4l2_pix_format *pixfmt; | |
1695 | int ret = 0; | |
1696 | ||
1697 | vpif_dbg(2, debug, "VIDIOC_S_FMT\n"); | |
1698 | ||
1699 | /* If streaming is started, return error */ | |
1700 | if (common->started) { | |
1701 | vpif_dbg(1, debug, "Streaming is started\n"); | |
1702 | return -EBUSY; | |
1703 | } | |
1704 | ||
1705 | if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || | |
1706 | (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { | |
1707 | if (!fh->initialized) { | |
1708 | vpif_dbg(1, debug, "Channel Busy\n"); | |
1709 | return -EBUSY; | |
1710 | } | |
1711 | } | |
1712 | ||
1713 | ret = v4l2_prio_check(&ch->prio, &fh->prio); | |
1714 | if (0 != ret) | |
1715 | return ret; | |
1716 | ||
1717 | fh->initialized = 1; | |
1718 | ||
1719 | pixfmt = &fmt->fmt.pix; | |
1720 | /* Check for valid field format */ | |
1721 | ret = vpif_check_format(ch, pixfmt, 0); | |
1722 | ||
1723 | if (ret) | |
1724 | return ret; | |
1725 | /* store the format in the channel object */ | |
1726 | if (mutex_lock_interruptible(&common->lock)) | |
1727 | return -ERESTARTSYS; | |
1728 | ||
1729 | common->fmt = *fmt; | |
1730 | mutex_unlock(&common->lock); | |
1731 | ||
1732 | return 0; | |
1733 | } | |
1734 | ||
1735 | /** | |
1736 | * vpif_querycap() - QUERYCAP handler | |
1737 | * @file: file ptr | |
1738 | * @priv: file handle | |
1739 | * @cap: ptr to v4l2_capability structure | |
1740 | */ | |
1741 | static int vpif_querycap(struct file *file, void *priv, | |
1742 | struct v4l2_capability *cap) | |
1743 | { | |
1744 | struct vpif_capture_config *config = vpif_dev->platform_data; | |
1745 | ||
1746 | cap->version = VPIF_CAPTURE_VERSION_CODE; | |
1747 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
1748 | strlcpy(cap->driver, "vpif capture", sizeof(cap->driver)); | |
1749 | strlcpy(cap->bus_info, "DM646x Platform", sizeof(cap->bus_info)); | |
1750 | strlcpy(cap->card, config->card_name, sizeof(cap->card)); | |
1751 | ||
1752 | return 0; | |
1753 | } | |
1754 | ||
1755 | /** | |
1756 | * vpif_g_priority() - get priority handler | |
1757 | * @file: file ptr | |
1758 | * @priv: file handle | |
1759 | * @prio: ptr to v4l2_priority structure | |
1760 | */ | |
1761 | static int vpif_g_priority(struct file *file, void *priv, | |
1762 | enum v4l2_priority *prio) | |
1763 | { | |
1764 | struct vpif_fh *fh = priv; | |
1765 | struct channel_obj *ch = fh->channel; | |
1766 | ||
1767 | *prio = v4l2_prio_max(&ch->prio); | |
1768 | ||
1769 | return 0; | |
1770 | } | |
1771 | ||
1772 | /** | |
1773 | * vpif_s_priority() - set priority handler | |
1774 | * @file: file ptr | |
1775 | * @priv: file handle | |
1776 | * @prio: ptr to v4l2_priority structure | |
1777 | */ | |
1778 | static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p) | |
1779 | { | |
1780 | struct vpif_fh *fh = priv; | |
1781 | struct channel_obj *ch = fh->channel; | |
1782 | ||
1783 | return v4l2_prio_change(&ch->prio, &fh->prio, p); | |
1784 | } | |
1785 | ||
1786 | /** | |
1787 | * vpif_cropcap() - cropcap handler | |
1788 | * @file: file ptr | |
1789 | * @priv: file handle | |
1790 | * @crop: ptr to v4l2_cropcap structure | |
1791 | */ | |
1792 | static int vpif_cropcap(struct file *file, void *priv, | |
1793 | struct v4l2_cropcap *crop) | |
1794 | { | |
1795 | struct vpif_fh *fh = priv; | |
1796 | struct channel_obj *ch = fh->channel; | |
1797 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; | |
1798 | ||
1799 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != crop->type) | |
1800 | return -EINVAL; | |
1801 | ||
1802 | crop->bounds.left = 0; | |
1803 | crop->bounds.top = 0; | |
1804 | crop->bounds.height = common->height; | |
1805 | crop->bounds.width = common->width; | |
1806 | crop->defrect = crop->bounds; | |
1807 | return 0; | |
1808 | } | |
1809 | ||
1810 | /* vpif capture ioctl operations */ | |
1811 | static const struct v4l2_ioctl_ops vpif_ioctl_ops = { | |
1812 | .vidioc_querycap = vpif_querycap, | |
1813 | .vidioc_g_priority = vpif_g_priority, | |
1814 | .vidioc_s_priority = vpif_s_priority, | |
1815 | .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap, | |
1816 | .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap, | |
1817 | .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap, | |
1818 | .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap, | |
1819 | .vidioc_enum_input = vpif_enum_input, | |
1820 | .vidioc_s_input = vpif_s_input, | |
1821 | .vidioc_g_input = vpif_g_input, | |
1822 | .vidioc_reqbufs = vpif_reqbufs, | |
1823 | .vidioc_querybuf = vpif_querybuf, | |
1824 | .vidioc_querystd = vpif_querystd, | |
1825 | .vidioc_s_std = vpif_s_std, | |
1826 | .vidioc_g_std = vpif_g_std, | |
1827 | .vidioc_qbuf = vpif_qbuf, | |
1828 | .vidioc_dqbuf = vpif_dqbuf, | |
1829 | .vidioc_streamon = vpif_streamon, | |
1830 | .vidioc_streamoff = vpif_streamoff, | |
1831 | .vidioc_cropcap = vpif_cropcap, | |
1832 | }; | |
1833 | ||
1834 | /* vpif file operations */ | |
1835 | static struct v4l2_file_operations vpif_fops = { | |
1836 | .owner = THIS_MODULE, | |
1837 | .open = vpif_open, | |
1838 | .release = vpif_release, | |
1839 | .ioctl = video_ioctl2, | |
1840 | .mmap = vpif_mmap, | |
1841 | .poll = vpif_poll | |
1842 | }; | |
1843 | ||
1844 | /* vpif video template */ | |
1845 | static struct video_device vpif_video_template = { | |
1846 | .name = "vpif", | |
1847 | .fops = &vpif_fops, | |
1848 | .minor = -1, | |
1849 | .ioctl_ops = &vpif_ioctl_ops, | |
1850 | }; | |
1851 | ||
1852 | /** | |
1853 | * initialize_vpif() - Initialize vpif data structures | |
1854 | * | |
1855 | * Allocate memory for data structures and initialize them | |
1856 | */ | |
1857 | static int initialize_vpif(void) | |
1858 | { | |
1859 | int err = 0, i, j; | |
1860 | int free_channel_objects_index; | |
1861 | ||
1862 | /* Default number of buffers should be 3 */ | |
1863 | if ((ch0_numbuffers > 0) && | |
1864 | (ch0_numbuffers < config_params.min_numbuffers)) | |
1865 | ch0_numbuffers = config_params.min_numbuffers; | |
1866 | if ((ch1_numbuffers > 0) && | |
1867 | (ch1_numbuffers < config_params.min_numbuffers)) | |
1868 | ch1_numbuffers = config_params.min_numbuffers; | |
1869 | ||
1870 | /* Set buffer size to min buffers size if it is invalid */ | |
1871 | if (ch0_bufsize < config_params.min_bufsize[VPIF_CHANNEL0_VIDEO]) | |
1872 | ch0_bufsize = | |
1873 | config_params.min_bufsize[VPIF_CHANNEL0_VIDEO]; | |
1874 | if (ch1_bufsize < config_params.min_bufsize[VPIF_CHANNEL1_VIDEO]) | |
1875 | ch1_bufsize = | |
1876 | config_params.min_bufsize[VPIF_CHANNEL1_VIDEO]; | |
1877 | ||
1878 | config_params.numbuffers[VPIF_CHANNEL0_VIDEO] = ch0_numbuffers; | |
1879 | config_params.numbuffers[VPIF_CHANNEL1_VIDEO] = ch1_numbuffers; | |
1880 | if (ch0_numbuffers) { | |
1881 | config_params.channel_bufsize[VPIF_CHANNEL0_VIDEO] | |
1882 | = ch0_bufsize; | |
1883 | } | |
1884 | if (ch1_numbuffers) { | |
1885 | config_params.channel_bufsize[VPIF_CHANNEL1_VIDEO] | |
1886 | = ch1_bufsize; | |
1887 | } | |
1888 | ||
1889 | /* Allocate memory for six channel objects */ | |
1890 | for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { | |
1891 | vpif_obj.dev[i] = | |
1892 | kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL); | |
1893 | /* If memory allocation fails, return error */ | |
1894 | if (!vpif_obj.dev[i]) { | |
1895 | free_channel_objects_index = i; | |
1896 | err = -ENOMEM; | |
1897 | goto vpif_init_free_channel_objects; | |
1898 | } | |
1899 | } | |
1900 | return 0; | |
1901 | ||
1902 | vpif_init_free_channel_objects: | |
1903 | for (j = 0; j < free_channel_objects_index; j++) | |
1904 | kfree(vpif_obj.dev[j]); | |
1905 | return err; | |
1906 | } | |
1907 | ||
1908 | /** | |
1909 | * vpif_probe : This function probes the vpif capture driver | |
1910 | * @pdev: platform device pointer | |
1911 | * | |
1912 | * This creates device entries by register itself to the V4L2 driver and | |
1913 | * initializes fields of each channel objects | |
1914 | */ | |
1915 | static __init int vpif_probe(struct platform_device *pdev) | |
1916 | { | |
1917 | struct vpif_subdev_info *subdevdata; | |
1918 | struct vpif_capture_config *config; | |
1919 | int i, j, k, m, q, err; | |
1920 | struct i2c_adapter *i2c_adap; | |
1921 | struct channel_obj *ch; | |
1922 | struct common_obj *common; | |
1923 | struct video_device *vfd; | |
1924 | struct resource *res; | |
1925 | int subdev_count; | |
1926 | ||
1927 | vpif_dev = &pdev->dev; | |
1928 | ||
1929 | err = initialize_vpif(); | |
1930 | if (err) { | |
1931 | v4l2_err(vpif_dev->driver, "Error initializing vpif\n"); | |
1932 | return err; | |
1933 | } | |
1934 | ||
1935 | k = 0; | |
1936 | while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) { | |
1937 | for (i = res->start; i <= res->end; i++) { | |
1938 | if (request_irq(i, vpif_channel_isr, IRQF_DISABLED, | |
1939 | "DM646x_Capture", | |
1940 | (void *)(&vpif_obj.dev[k]->channel_id))) { | |
1941 | err = -EBUSY; | |
1942 | i--; | |
1943 | goto vpif_int_err; | |
1944 | } | |
1945 | } | |
1946 | k++; | |
1947 | } | |
1948 | ||
1949 | for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { | |
1950 | /* Get the pointer to the channel object */ | |
1951 | ch = vpif_obj.dev[i]; | |
1952 | /* Allocate memory for video device */ | |
1953 | vfd = video_device_alloc(); | |
1954 | if (NULL == vfd) { | |
1955 | for (j = 0; j < i; j++) { | |
1956 | ch = vpif_obj.dev[j]; | |
1957 | video_device_release(ch->video_dev); | |
1958 | } | |
1959 | err = -ENOMEM; | |
1960 | goto vpif_dev_alloc_err; | |
1961 | } | |
1962 | ||
1963 | /* Initialize field of video device */ | |
1964 | *vfd = vpif_video_template; | |
1965 | vfd->v4l2_dev = &vpif_obj.v4l2_dev; | |
1966 | vfd->release = video_device_release; | |
1967 | snprintf(vfd->name, sizeof(vfd->name), | |
1968 | "DM646x_VPIFCapture_DRIVER_V%d.%d.%d", | |
1969 | (VPIF_CAPTURE_VERSION_CODE >> 16) & 0xff, | |
1970 | (VPIF_CAPTURE_VERSION_CODE >> 8) & 0xff, | |
1971 | (VPIF_CAPTURE_VERSION_CODE) & 0xff); | |
1972 | /* Set video_dev to the video device */ | |
1973 | ch->video_dev = vfd; | |
1974 | } | |
1975 | ||
1976 | for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) { | |
1977 | ch = vpif_obj.dev[j]; | |
1978 | ch->channel_id = j; | |
1979 | common = &(ch->common[VPIF_VIDEO_INDEX]); | |
1980 | spin_lock_init(&common->irqlock); | |
1981 | mutex_init(&common->lock); | |
1982 | /* Initialize prio member of channel object */ | |
1983 | v4l2_prio_init(&ch->prio); | |
1984 | err = video_register_device(ch->video_dev, | |
1985 | VFL_TYPE_GRABBER, (j ? 1 : 0)); | |
1986 | if (err) | |
1987 | goto probe_out; | |
1988 | ||
1989 | video_set_drvdata(ch->video_dev, ch); | |
1990 | ||
1991 | } | |
1992 | ||
1993 | i2c_adap = i2c_get_adapter(1); | |
1994 | config = pdev->dev.platform_data; | |
1995 | ||
1996 | subdev_count = config->subdev_count; | |
1997 | vpif_obj.sd = kmalloc(sizeof(struct v4l2_subdev *) * subdev_count, | |
1998 | GFP_KERNEL); | |
1999 | if (vpif_obj.sd == NULL) { | |
2000 | vpif_err("unable to allocate memory for subdevice pointers\n"); | |
2001 | err = -ENOMEM; | |
2002 | goto probe_out; | |
2003 | } | |
2004 | ||
2005 | err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev); | |
2006 | if (err) { | |
2007 | v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n"); | |
2008 | goto probe_subdev_out; | |
2009 | } | |
2010 | ||
2011 | for (i = 0; i < subdev_count; i++) { | |
2012 | subdevdata = &config->subdev_info[i]; | |
2013 | vpif_obj.sd[i] = | |
2014 | v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev, | |
2015 | i2c_adap, | |
2016 | subdevdata->name, | |
2017 | &subdevdata->board_info, | |
2018 | NULL); | |
2019 | ||
2020 | if (!vpif_obj.sd[i]) { | |
2021 | vpif_err("Error registering v4l2 subdevice\n"); | |
2022 | goto probe_subdev_out; | |
2023 | } | |
2024 | v4l2_info(&vpif_obj.v4l2_dev, "registered sub device %s\n", | |
2025 | subdevdata->name); | |
2026 | ||
2027 | if (vpif_obj.sd[i]) | |
2028 | vpif_obj.sd[i]->grp_id = 1 << i; | |
2029 | } | |
2030 | v4l2_info(&vpif_obj.v4l2_dev, "DM646x VPIF Capture driver" | |
2031 | " initialized\n"); | |
2032 | ||
2033 | return 0; | |
2034 | ||
2035 | probe_subdev_out: | |
2036 | /* free sub devices memory */ | |
2037 | kfree(vpif_obj.sd); | |
2038 | ||
2039 | j = VPIF_CAPTURE_MAX_DEVICES; | |
2040 | probe_out: | |
2041 | v4l2_device_unregister(&vpif_obj.v4l2_dev); | |
2042 | for (k = 0; k < j; k++) { | |
2043 | /* Get the pointer to the channel object */ | |
2044 | ch = vpif_obj.dev[k]; | |
2045 | /* Unregister video device */ | |
2046 | video_unregister_device(ch->video_dev); | |
2047 | } | |
2048 | ||
2049 | vpif_dev_alloc_err: | |
2050 | k = VPIF_CAPTURE_MAX_DEVICES-1; | |
2051 | res = platform_get_resource(pdev, IORESOURCE_IRQ, k); | |
2052 | i = res->end; | |
2053 | ||
2054 | vpif_int_err: | |
2055 | for (q = k; q >= 0; q--) { | |
2056 | for (m = i; m >= (int)res->start; m--) | |
2057 | free_irq(m, (void *)(&vpif_obj.dev[q]->channel_id)); | |
2058 | ||
2059 | res = platform_get_resource(pdev, IORESOURCE_IRQ, q-1); | |
2060 | if (res) | |
2061 | i = res->end; | |
2062 | } | |
2063 | return err; | |
2064 | } | |
2065 | ||
2066 | /** | |
2067 | * vpif_remove() - driver remove handler | |
2068 | * @device: ptr to platform device structure | |
2069 | * | |
2070 | * The vidoe device is unregistered | |
2071 | */ | |
2072 | static int vpif_remove(struct platform_device *device) | |
2073 | { | |
2074 | int i; | |
2075 | struct channel_obj *ch; | |
2076 | ||
2077 | v4l2_device_unregister(&vpif_obj.v4l2_dev); | |
2078 | ||
2079 | /* un-register device */ | |
2080 | for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { | |
2081 | /* Get the pointer to the channel object */ | |
2082 | ch = vpif_obj.dev[i]; | |
2083 | /* Unregister video device */ | |
2084 | video_unregister_device(ch->video_dev); | |
2085 | } | |
2086 | return 0; | |
2087 | } | |
2088 | ||
2089 | /** | |
2090 | * vpif_suspend: vpif device suspend | |
2091 | * | |
2092 | * TODO: Add suspend code here | |
2093 | */ | |
2094 | static int | |
2095 | vpif_suspend(struct device *dev) | |
2096 | { | |
2097 | return -1; | |
2098 | } | |
2099 | ||
2100 | /** | |
2101 | * vpif_resume: vpif device suspend | |
2102 | * | |
2103 | * TODO: Add resume code here | |
2104 | */ | |
2105 | static int | |
2106 | vpif_resume(struct device *dev) | |
2107 | { | |
2108 | return -1; | |
2109 | } | |
2110 | ||
47145210 | 2111 | static const struct dev_pm_ops vpif_dev_pm_ops = { |
6ffefff5 MK |
2112 | .suspend = vpif_suspend, |
2113 | .resume = vpif_resume, | |
2114 | }; | |
2115 | ||
2116 | static struct platform_driver vpif_driver = { | |
2117 | .driver = { | |
2118 | .name = "vpif_capture", | |
2119 | .owner = THIS_MODULE, | |
2120 | .pm = &vpif_dev_pm_ops, | |
2121 | }, | |
2122 | .probe = vpif_probe, | |
2123 | .remove = vpif_remove, | |
2124 | }; | |
2125 | ||
2126 | /** | |
2127 | * vpif_init: initialize the vpif driver | |
2128 | * | |
2129 | * This function registers device and driver to the kernel, requests irq | |
2130 | * handler and allocates memory | |
2131 | * for channel objects | |
2132 | */ | |
2133 | static __init int vpif_init(void) | |
2134 | { | |
2135 | return platform_driver_register(&vpif_driver); | |
2136 | } | |
2137 | ||
2138 | /** | |
2139 | * vpif_cleanup : This function clean up the vpif capture resources | |
2140 | * | |
2141 | * This will un-registers device and driver to the kernel, frees | |
2142 | * requested irq handler and de-allocates memory allocated for channel | |
2143 | * objects. | |
2144 | */ | |
2145 | static void vpif_cleanup(void) | |
2146 | { | |
2147 | struct platform_device *pdev; | |
2148 | struct resource *res; | |
2149 | int irq_num; | |
2150 | int i = 0; | |
2151 | ||
2152 | pdev = container_of(vpif_dev, struct platform_device, dev); | |
2153 | while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) { | |
2154 | for (irq_num = res->start; irq_num <= res->end; irq_num++) | |
2155 | free_irq(irq_num, | |
2156 | (void *)(&vpif_obj.dev[i]->channel_id)); | |
2157 | i++; | |
2158 | } | |
2159 | ||
2160 | platform_driver_unregister(&vpif_driver); | |
2161 | ||
2162 | kfree(vpif_obj.sd); | |
2163 | for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) | |
2164 | kfree(vpif_obj.dev[i]); | |
2165 | } | |
2166 | ||
2167 | /* Function for module initialization and cleanup */ | |
2168 | module_init(vpif_init); | |
2169 | module_exit(vpif_cleanup); |