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63b1a90d SJ |
1 | /* |
2 | * Analog Devices video capture driver | |
3 | * | |
4 | * Copyright (c) 2011 Analog Devices Inc. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | ||
20 | #include <linux/completion.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/errno.h> | |
23 | #include <linux/fs.h> | |
24 | #include <linux/i2c.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/interrupt.h> | |
27 | #include <linux/io.h> | |
28 | #include <linux/mm.h> | |
29 | #include <linux/module.h> | |
30 | #include <linux/platform_device.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/time.h> | |
33 | #include <linux/types.h> | |
34 | ||
35 | #include <media/v4l2-chip-ident.h> | |
36 | #include <media/v4l2-common.h> | |
37 | #include <media/v4l2-ctrls.h> | |
38 | #include <media/v4l2-device.h> | |
39 | #include <media/v4l2-ioctl.h> | |
40 | #include <media/videobuf2-dma-contig.h> | |
41 | ||
42 | #include <asm/dma.h> | |
43 | ||
44 | #include <media/blackfin/bfin_capture.h> | |
45 | #include <media/blackfin/ppi.h> | |
46 | ||
47 | #define CAPTURE_DRV_NAME "bfin_capture" | |
48 | #define BCAP_MIN_NUM_BUF 2 | |
49 | ||
50 | struct bcap_format { | |
51 | char *desc; | |
52 | u32 pixelformat; | |
53 | enum v4l2_mbus_pixelcode mbus_code; | |
54 | int bpp; /* bits per pixel */ | |
55 | }; | |
56 | ||
57 | struct bcap_buffer { | |
58 | struct vb2_buffer vb; | |
59 | struct list_head list; | |
60 | }; | |
61 | ||
62 | struct bcap_device { | |
63 | /* capture device instance */ | |
64 | struct v4l2_device v4l2_dev; | |
65 | /* v4l2 control handler */ | |
66 | struct v4l2_ctrl_handler ctrl_handler; | |
67 | /* device node data */ | |
68 | struct video_device *video_dev; | |
69 | /* sub device instance */ | |
70 | struct v4l2_subdev *sd; | |
71 | /* capture config */ | |
72 | struct bfin_capture_config *cfg; | |
73 | /* ppi interface */ | |
74 | struct ppi_if *ppi; | |
75 | /* current input */ | |
76 | unsigned int cur_input; | |
77 | /* current selected standard */ | |
78 | v4l2_std_id std; | |
79 | /* used to store pixel format */ | |
80 | struct v4l2_pix_format fmt; | |
81 | /* bits per pixel*/ | |
82 | int bpp; | |
83 | /* used to store sensor supported format */ | |
84 | struct bcap_format *sensor_formats; | |
85 | /* number of sensor formats array */ | |
86 | int num_sensor_formats; | |
87 | /* pointing to current video buffer */ | |
88 | struct bcap_buffer *cur_frm; | |
89 | /* pointing to next video buffer */ | |
90 | struct bcap_buffer *next_frm; | |
91 | /* buffer queue used in videobuf2 */ | |
92 | struct vb2_queue buffer_queue; | |
93 | /* allocator-specific contexts for each plane */ | |
94 | struct vb2_alloc_ctx *alloc_ctx; | |
95 | /* queue of filled frames */ | |
96 | struct list_head dma_queue; | |
97 | /* used in videobuf2 callback */ | |
98 | spinlock_t lock; | |
99 | /* used to access capture device */ | |
100 | struct mutex mutex; | |
101 | /* used to wait ppi to complete one transfer */ | |
102 | struct completion comp; | |
103 | /* prepare to stop */ | |
104 | bool stop; | |
105 | }; | |
106 | ||
107 | struct bcap_fh { | |
108 | struct v4l2_fh fh; | |
109 | /* indicates whether this file handle is doing IO */ | |
110 | bool io_allowed; | |
111 | }; | |
112 | ||
113 | static const struct bcap_format bcap_formats[] = { | |
114 | { | |
115 | .desc = "YCbCr 4:2:2 Interleaved UYVY", | |
116 | .pixelformat = V4L2_PIX_FMT_UYVY, | |
117 | .mbus_code = V4L2_MBUS_FMT_UYVY8_2X8, | |
118 | .bpp = 16, | |
119 | }, | |
120 | { | |
121 | .desc = "YCbCr 4:2:2 Interleaved YUYV", | |
122 | .pixelformat = V4L2_PIX_FMT_YUYV, | |
123 | .mbus_code = V4L2_MBUS_FMT_YUYV8_2X8, | |
124 | .bpp = 16, | |
125 | }, | |
126 | { | |
127 | .desc = "RGB 565", | |
128 | .pixelformat = V4L2_PIX_FMT_RGB565, | |
129 | .mbus_code = V4L2_MBUS_FMT_RGB565_2X8_LE, | |
130 | .bpp = 16, | |
131 | }, | |
132 | { | |
133 | .desc = "RGB 444", | |
134 | .pixelformat = V4L2_PIX_FMT_RGB444, | |
135 | .mbus_code = V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE, | |
136 | .bpp = 16, | |
137 | }, | |
138 | ||
139 | }; | |
140 | #define BCAP_MAX_FMTS ARRAY_SIZE(bcap_formats) | |
141 | ||
142 | static irqreturn_t bcap_isr(int irq, void *dev_id); | |
143 | ||
144 | static struct bcap_buffer *to_bcap_vb(struct vb2_buffer *vb) | |
145 | { | |
146 | return container_of(vb, struct bcap_buffer, vb); | |
147 | } | |
148 | ||
149 | static int bcap_init_sensor_formats(struct bcap_device *bcap_dev) | |
150 | { | |
151 | enum v4l2_mbus_pixelcode code; | |
152 | struct bcap_format *sf; | |
153 | unsigned int num_formats = 0; | |
154 | int i, j; | |
155 | ||
156 | while (!v4l2_subdev_call(bcap_dev->sd, video, | |
157 | enum_mbus_fmt, num_formats, &code)) | |
158 | num_formats++; | |
159 | if (!num_formats) | |
160 | return -ENXIO; | |
161 | ||
162 | sf = kzalloc(num_formats * sizeof(*sf), GFP_KERNEL); | |
163 | if (!sf) | |
164 | return -ENOMEM; | |
165 | ||
166 | for (i = 0; i < num_formats; i++) { | |
167 | v4l2_subdev_call(bcap_dev->sd, video, | |
168 | enum_mbus_fmt, i, &code); | |
169 | for (j = 0; j < BCAP_MAX_FMTS; j++) | |
170 | if (code == bcap_formats[j].mbus_code) | |
171 | break; | |
172 | if (j == BCAP_MAX_FMTS) { | |
173 | /* we don't allow this sensor working with our bridge */ | |
174 | kfree(sf); | |
175 | return -EINVAL; | |
176 | } | |
177 | sf[i] = bcap_formats[j]; | |
178 | } | |
179 | bcap_dev->sensor_formats = sf; | |
180 | bcap_dev->num_sensor_formats = num_formats; | |
181 | return 0; | |
182 | } | |
183 | ||
184 | static void bcap_free_sensor_formats(struct bcap_device *bcap_dev) | |
185 | { | |
186 | bcap_dev->num_sensor_formats = 0; | |
187 | kfree(bcap_dev->sensor_formats); | |
188 | bcap_dev->sensor_formats = NULL; | |
189 | } | |
190 | ||
191 | static int bcap_open(struct file *file) | |
192 | { | |
193 | struct bcap_device *bcap_dev = video_drvdata(file); | |
194 | struct video_device *vfd = bcap_dev->video_dev; | |
195 | struct bcap_fh *bcap_fh; | |
196 | ||
197 | if (!bcap_dev->sd) { | |
198 | v4l2_err(&bcap_dev->v4l2_dev, "No sub device registered\n"); | |
199 | return -ENODEV; | |
200 | } | |
201 | ||
202 | bcap_fh = kzalloc(sizeof(*bcap_fh), GFP_KERNEL); | |
203 | if (!bcap_fh) { | |
204 | v4l2_err(&bcap_dev->v4l2_dev, | |
205 | "unable to allocate memory for file handle object\n"); | |
206 | return -ENOMEM; | |
207 | } | |
208 | ||
209 | v4l2_fh_init(&bcap_fh->fh, vfd); | |
210 | ||
211 | /* store pointer to v4l2_fh in private_data member of file */ | |
212 | file->private_data = &bcap_fh->fh; | |
213 | v4l2_fh_add(&bcap_fh->fh); | |
214 | bcap_fh->io_allowed = false; | |
215 | return 0; | |
216 | } | |
217 | ||
218 | static int bcap_release(struct file *file) | |
219 | { | |
220 | struct bcap_device *bcap_dev = video_drvdata(file); | |
221 | struct v4l2_fh *fh = file->private_data; | |
222 | struct bcap_fh *bcap_fh = container_of(fh, struct bcap_fh, fh); | |
223 | ||
224 | /* if this instance is doing IO */ | |
225 | if (bcap_fh->io_allowed) | |
226 | vb2_queue_release(&bcap_dev->buffer_queue); | |
227 | ||
228 | file->private_data = NULL; | |
229 | v4l2_fh_del(&bcap_fh->fh); | |
230 | v4l2_fh_exit(&bcap_fh->fh); | |
231 | kfree(bcap_fh); | |
232 | return 0; | |
233 | } | |
234 | ||
235 | static int bcap_mmap(struct file *file, struct vm_area_struct *vma) | |
236 | { | |
237 | struct bcap_device *bcap_dev = video_drvdata(file); | |
28c3682a | 238 | int ret; |
63b1a90d | 239 | |
28c3682a HV |
240 | if (mutex_lock_interruptible(&bcap_dev->mutex)) |
241 | return -ERESTARTSYS; | |
242 | ret = vb2_mmap(&bcap_dev->buffer_queue, vma); | |
243 | mutex_unlock(&bcap_dev->mutex); | |
244 | return ret; | |
63b1a90d SJ |
245 | } |
246 | ||
247 | #ifndef CONFIG_MMU | |
248 | static unsigned long bcap_get_unmapped_area(struct file *file, | |
249 | unsigned long addr, | |
250 | unsigned long len, | |
251 | unsigned long pgoff, | |
252 | unsigned long flags) | |
253 | { | |
254 | struct bcap_device *bcap_dev = video_drvdata(file); | |
255 | ||
256 | return vb2_get_unmapped_area(&bcap_dev->buffer_queue, | |
257 | addr, | |
258 | len, | |
259 | pgoff, | |
260 | flags); | |
261 | } | |
262 | #endif | |
263 | ||
264 | static unsigned int bcap_poll(struct file *file, poll_table *wait) | |
265 | { | |
266 | struct bcap_device *bcap_dev = video_drvdata(file); | |
28c3682a | 267 | unsigned int res; |
63b1a90d | 268 | |
28c3682a HV |
269 | mutex_lock(&bcap_dev->mutex); |
270 | res = vb2_poll(&bcap_dev->buffer_queue, file, wait); | |
271 | mutex_unlock(&bcap_dev->mutex); | |
272 | return res; | |
63b1a90d SJ |
273 | } |
274 | ||
275 | static int bcap_queue_setup(struct vb2_queue *vq, | |
276 | const struct v4l2_format *fmt, | |
277 | unsigned int *nbuffers, unsigned int *nplanes, | |
278 | unsigned int sizes[], void *alloc_ctxs[]) | |
279 | { | |
280 | struct bcap_device *bcap_dev = vb2_get_drv_priv(vq); | |
281 | ||
282 | if (*nbuffers < BCAP_MIN_NUM_BUF) | |
283 | *nbuffers = BCAP_MIN_NUM_BUF; | |
284 | ||
285 | *nplanes = 1; | |
286 | sizes[0] = bcap_dev->fmt.sizeimage; | |
287 | alloc_ctxs[0] = bcap_dev->alloc_ctx; | |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
292 | static int bcap_buffer_init(struct vb2_buffer *vb) | |
293 | { | |
294 | struct bcap_buffer *buf = to_bcap_vb(vb); | |
295 | ||
296 | INIT_LIST_HEAD(&buf->list); | |
297 | return 0; | |
298 | } | |
299 | ||
300 | static int bcap_buffer_prepare(struct vb2_buffer *vb) | |
301 | { | |
302 | struct bcap_device *bcap_dev = vb2_get_drv_priv(vb->vb2_queue); | |
303 | struct bcap_buffer *buf = to_bcap_vb(vb); | |
304 | unsigned long size; | |
305 | ||
306 | size = bcap_dev->fmt.sizeimage; | |
307 | if (vb2_plane_size(vb, 0) < size) { | |
308 | v4l2_err(&bcap_dev->v4l2_dev, "buffer too small (%lu < %lu)\n", | |
309 | vb2_plane_size(vb, 0), size); | |
310 | return -EINVAL; | |
311 | } | |
312 | vb2_set_plane_payload(&buf->vb, 0, size); | |
313 | ||
314 | return 0; | |
315 | } | |
316 | ||
317 | static void bcap_buffer_queue(struct vb2_buffer *vb) | |
318 | { | |
319 | struct bcap_device *bcap_dev = vb2_get_drv_priv(vb->vb2_queue); | |
320 | struct bcap_buffer *buf = to_bcap_vb(vb); | |
321 | unsigned long flags; | |
322 | ||
323 | spin_lock_irqsave(&bcap_dev->lock, flags); | |
324 | list_add_tail(&buf->list, &bcap_dev->dma_queue); | |
325 | spin_unlock_irqrestore(&bcap_dev->lock, flags); | |
326 | } | |
327 | ||
328 | static void bcap_buffer_cleanup(struct vb2_buffer *vb) | |
329 | { | |
330 | struct bcap_device *bcap_dev = vb2_get_drv_priv(vb->vb2_queue); | |
331 | struct bcap_buffer *buf = to_bcap_vb(vb); | |
332 | unsigned long flags; | |
333 | ||
334 | spin_lock_irqsave(&bcap_dev->lock, flags); | |
335 | list_del_init(&buf->list); | |
336 | spin_unlock_irqrestore(&bcap_dev->lock, flags); | |
337 | } | |
338 | ||
339 | static void bcap_lock(struct vb2_queue *vq) | |
340 | { | |
341 | struct bcap_device *bcap_dev = vb2_get_drv_priv(vq); | |
342 | mutex_lock(&bcap_dev->mutex); | |
343 | } | |
344 | ||
345 | static void bcap_unlock(struct vb2_queue *vq) | |
346 | { | |
347 | struct bcap_device *bcap_dev = vb2_get_drv_priv(vq); | |
348 | mutex_unlock(&bcap_dev->mutex); | |
349 | } | |
350 | ||
351 | static int bcap_start_streaming(struct vb2_queue *vq, unsigned int count) | |
352 | { | |
353 | struct bcap_device *bcap_dev = vb2_get_drv_priv(vq); | |
354 | struct ppi_if *ppi = bcap_dev->ppi; | |
355 | struct ppi_params params; | |
356 | int ret; | |
357 | ||
358 | /* enable streamon on the sub device */ | |
359 | ret = v4l2_subdev_call(bcap_dev->sd, video, s_stream, 1); | |
360 | if (ret && (ret != -ENOIOCTLCMD)) { | |
361 | v4l2_err(&bcap_dev->v4l2_dev, "stream on failed in subdev\n"); | |
362 | return ret; | |
363 | } | |
364 | ||
365 | /* set ppi params */ | |
366 | params.width = bcap_dev->fmt.width; | |
367 | params.height = bcap_dev->fmt.height; | |
368 | params.bpp = bcap_dev->bpp; | |
369 | params.ppi_control = bcap_dev->cfg->ppi_control; | |
370 | params.int_mask = bcap_dev->cfg->int_mask; | |
371 | params.blank_clocks = bcap_dev->cfg->blank_clocks; | |
372 | ret = ppi->ops->set_params(ppi, ¶ms); | |
373 | if (ret < 0) { | |
374 | v4l2_err(&bcap_dev->v4l2_dev, | |
375 | "Error in setting ppi params\n"); | |
376 | return ret; | |
377 | } | |
378 | ||
379 | /* attach ppi DMA irq handler */ | |
380 | ret = ppi->ops->attach_irq(ppi, bcap_isr); | |
381 | if (ret < 0) { | |
382 | v4l2_err(&bcap_dev->v4l2_dev, | |
383 | "Error in attaching interrupt handler\n"); | |
384 | return ret; | |
385 | } | |
386 | ||
387 | INIT_COMPLETION(bcap_dev->comp); | |
388 | bcap_dev->stop = false; | |
389 | return 0; | |
390 | } | |
391 | ||
392 | static int bcap_stop_streaming(struct vb2_queue *vq) | |
393 | { | |
394 | struct bcap_device *bcap_dev = vb2_get_drv_priv(vq); | |
395 | struct ppi_if *ppi = bcap_dev->ppi; | |
396 | int ret; | |
397 | ||
398 | if (!vb2_is_streaming(vq)) | |
399 | return 0; | |
400 | ||
401 | bcap_dev->stop = true; | |
402 | wait_for_completion(&bcap_dev->comp); | |
403 | ppi->ops->stop(ppi); | |
404 | ppi->ops->detach_irq(ppi); | |
405 | ret = v4l2_subdev_call(bcap_dev->sd, video, s_stream, 0); | |
406 | if (ret && (ret != -ENOIOCTLCMD)) | |
407 | v4l2_err(&bcap_dev->v4l2_dev, | |
408 | "stream off failed in subdev\n"); | |
409 | ||
410 | /* release all active buffers */ | |
411 | while (!list_empty(&bcap_dev->dma_queue)) { | |
412 | bcap_dev->next_frm = list_entry(bcap_dev->dma_queue.next, | |
413 | struct bcap_buffer, list); | |
414 | list_del(&bcap_dev->next_frm->list); | |
415 | vb2_buffer_done(&bcap_dev->next_frm->vb, VB2_BUF_STATE_ERROR); | |
416 | } | |
417 | return 0; | |
418 | } | |
419 | ||
420 | static struct vb2_ops bcap_video_qops = { | |
421 | .queue_setup = bcap_queue_setup, | |
422 | .buf_init = bcap_buffer_init, | |
423 | .buf_prepare = bcap_buffer_prepare, | |
424 | .buf_cleanup = bcap_buffer_cleanup, | |
425 | .buf_queue = bcap_buffer_queue, | |
426 | .wait_prepare = bcap_unlock, | |
427 | .wait_finish = bcap_lock, | |
428 | .start_streaming = bcap_start_streaming, | |
429 | .stop_streaming = bcap_stop_streaming, | |
430 | }; | |
431 | ||
432 | static int bcap_reqbufs(struct file *file, void *priv, | |
433 | struct v4l2_requestbuffers *req_buf) | |
434 | { | |
435 | struct bcap_device *bcap_dev = video_drvdata(file); | |
436 | struct vb2_queue *vq = &bcap_dev->buffer_queue; | |
437 | struct v4l2_fh *fh = file->private_data; | |
438 | struct bcap_fh *bcap_fh = container_of(fh, struct bcap_fh, fh); | |
439 | ||
440 | if (vb2_is_busy(vq)) | |
441 | return -EBUSY; | |
442 | ||
443 | bcap_fh->io_allowed = true; | |
444 | ||
445 | return vb2_reqbufs(vq, req_buf); | |
446 | } | |
447 | ||
448 | static int bcap_querybuf(struct file *file, void *priv, | |
449 | struct v4l2_buffer *buf) | |
450 | { | |
451 | struct bcap_device *bcap_dev = video_drvdata(file); | |
452 | ||
453 | return vb2_querybuf(&bcap_dev->buffer_queue, buf); | |
454 | } | |
455 | ||
456 | static int bcap_qbuf(struct file *file, void *priv, | |
457 | struct v4l2_buffer *buf) | |
458 | { | |
459 | struct bcap_device *bcap_dev = video_drvdata(file); | |
460 | struct v4l2_fh *fh = file->private_data; | |
461 | struct bcap_fh *bcap_fh = container_of(fh, struct bcap_fh, fh); | |
462 | ||
463 | if (!bcap_fh->io_allowed) | |
464 | return -EBUSY; | |
465 | ||
466 | return vb2_qbuf(&bcap_dev->buffer_queue, buf); | |
467 | } | |
468 | ||
469 | static int bcap_dqbuf(struct file *file, void *priv, | |
470 | struct v4l2_buffer *buf) | |
471 | { | |
472 | struct bcap_device *bcap_dev = video_drvdata(file); | |
473 | struct v4l2_fh *fh = file->private_data; | |
474 | struct bcap_fh *bcap_fh = container_of(fh, struct bcap_fh, fh); | |
475 | ||
476 | if (!bcap_fh->io_allowed) | |
477 | return -EBUSY; | |
478 | ||
479 | return vb2_dqbuf(&bcap_dev->buffer_queue, | |
480 | buf, file->f_flags & O_NONBLOCK); | |
481 | } | |
482 | ||
483 | static irqreturn_t bcap_isr(int irq, void *dev_id) | |
484 | { | |
485 | struct ppi_if *ppi = dev_id; | |
486 | struct bcap_device *bcap_dev = ppi->priv; | |
487 | struct timeval timevalue; | |
488 | struct vb2_buffer *vb = &bcap_dev->cur_frm->vb; | |
489 | dma_addr_t addr; | |
490 | ||
491 | spin_lock(&bcap_dev->lock); | |
492 | ||
493 | if (bcap_dev->cur_frm != bcap_dev->next_frm) { | |
494 | do_gettimeofday(&timevalue); | |
495 | vb->v4l2_buf.timestamp = timevalue; | |
496 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); | |
497 | bcap_dev->cur_frm = bcap_dev->next_frm; | |
498 | } | |
499 | ||
500 | ppi->ops->stop(ppi); | |
501 | ||
502 | if (bcap_dev->stop) { | |
503 | complete(&bcap_dev->comp); | |
504 | } else { | |
505 | if (!list_empty(&bcap_dev->dma_queue)) { | |
506 | bcap_dev->next_frm = list_entry(bcap_dev->dma_queue.next, | |
507 | struct bcap_buffer, list); | |
508 | list_del(&bcap_dev->next_frm->list); | |
509 | addr = vb2_dma_contig_plane_dma_addr(&bcap_dev->next_frm->vb, 0); | |
510 | ppi->ops->update_addr(ppi, (unsigned long)addr); | |
511 | } | |
512 | ppi->ops->start(ppi); | |
513 | } | |
514 | ||
515 | spin_unlock(&bcap_dev->lock); | |
516 | ||
517 | return IRQ_HANDLED; | |
518 | } | |
519 | ||
520 | static int bcap_streamon(struct file *file, void *priv, | |
521 | enum v4l2_buf_type buf_type) | |
522 | { | |
523 | struct bcap_device *bcap_dev = video_drvdata(file); | |
524 | struct bcap_fh *fh = file->private_data; | |
525 | struct ppi_if *ppi = bcap_dev->ppi; | |
526 | dma_addr_t addr; | |
527 | int ret; | |
528 | ||
529 | if (!fh->io_allowed) | |
530 | return -EBUSY; | |
531 | ||
532 | /* call streamon to start streaming in videobuf */ | |
533 | ret = vb2_streamon(&bcap_dev->buffer_queue, buf_type); | |
534 | if (ret) | |
535 | return ret; | |
536 | ||
537 | /* if dma queue is empty, return error */ | |
538 | if (list_empty(&bcap_dev->dma_queue)) { | |
539 | v4l2_err(&bcap_dev->v4l2_dev, "dma queue is empty\n"); | |
540 | ret = -EINVAL; | |
541 | goto err; | |
542 | } | |
543 | ||
544 | /* get the next frame from the dma queue */ | |
545 | bcap_dev->next_frm = list_entry(bcap_dev->dma_queue.next, | |
546 | struct bcap_buffer, list); | |
547 | bcap_dev->cur_frm = bcap_dev->next_frm; | |
548 | /* remove buffer from the dma queue */ | |
549 | list_del(&bcap_dev->cur_frm->list); | |
550 | addr = vb2_dma_contig_plane_dma_addr(&bcap_dev->cur_frm->vb, 0); | |
551 | /* update DMA address */ | |
552 | ppi->ops->update_addr(ppi, (unsigned long)addr); | |
553 | /* enable ppi */ | |
554 | ppi->ops->start(ppi); | |
555 | ||
556 | return 0; | |
557 | err: | |
558 | vb2_streamoff(&bcap_dev->buffer_queue, buf_type); | |
559 | return ret; | |
560 | } | |
561 | ||
562 | static int bcap_streamoff(struct file *file, void *priv, | |
563 | enum v4l2_buf_type buf_type) | |
564 | { | |
565 | struct bcap_device *bcap_dev = video_drvdata(file); | |
566 | struct bcap_fh *fh = file->private_data; | |
567 | ||
568 | if (!fh->io_allowed) | |
569 | return -EBUSY; | |
570 | ||
571 | return vb2_streamoff(&bcap_dev->buffer_queue, buf_type); | |
572 | } | |
573 | ||
574 | static int bcap_querystd(struct file *file, void *priv, v4l2_std_id *std) | |
575 | { | |
576 | struct bcap_device *bcap_dev = video_drvdata(file); | |
577 | ||
578 | return v4l2_subdev_call(bcap_dev->sd, video, querystd, std); | |
579 | } | |
580 | ||
581 | static int bcap_g_std(struct file *file, void *priv, v4l2_std_id *std) | |
582 | { | |
583 | struct bcap_device *bcap_dev = video_drvdata(file); | |
584 | ||
585 | *std = bcap_dev->std; | |
586 | return 0; | |
587 | } | |
588 | ||
589 | static int bcap_s_std(struct file *file, void *priv, v4l2_std_id *std) | |
590 | { | |
591 | struct bcap_device *bcap_dev = video_drvdata(file); | |
592 | int ret; | |
593 | ||
594 | if (vb2_is_busy(&bcap_dev->buffer_queue)) | |
595 | return -EBUSY; | |
596 | ||
597 | ret = v4l2_subdev_call(bcap_dev->sd, core, s_std, *std); | |
598 | if (ret < 0) | |
599 | return ret; | |
600 | ||
601 | bcap_dev->std = *std; | |
602 | return 0; | |
603 | } | |
604 | ||
605 | static int bcap_enum_input(struct file *file, void *priv, | |
606 | struct v4l2_input *input) | |
607 | { | |
608 | struct bcap_device *bcap_dev = video_drvdata(file); | |
609 | struct bfin_capture_config *config = bcap_dev->cfg; | |
610 | int ret; | |
611 | u32 status; | |
612 | ||
613 | if (input->index >= config->num_inputs) | |
614 | return -EINVAL; | |
615 | ||
616 | *input = config->inputs[input->index]; | |
617 | /* get input status */ | |
618 | ret = v4l2_subdev_call(bcap_dev->sd, video, g_input_status, &status); | |
619 | if (!ret) | |
620 | input->status = status; | |
621 | return 0; | |
622 | } | |
623 | ||
624 | static int bcap_g_input(struct file *file, void *priv, unsigned int *index) | |
625 | { | |
626 | struct bcap_device *bcap_dev = video_drvdata(file); | |
627 | ||
628 | *index = bcap_dev->cur_input; | |
629 | return 0; | |
630 | } | |
631 | ||
632 | static int bcap_s_input(struct file *file, void *priv, unsigned int index) | |
633 | { | |
634 | struct bcap_device *bcap_dev = video_drvdata(file); | |
635 | struct bfin_capture_config *config = bcap_dev->cfg; | |
636 | struct bcap_route *route; | |
637 | int ret; | |
638 | ||
639 | if (vb2_is_busy(&bcap_dev->buffer_queue)) | |
640 | return -EBUSY; | |
641 | ||
642 | if (index >= config->num_inputs) | |
643 | return -EINVAL; | |
644 | ||
645 | route = &config->routes[index]; | |
646 | ret = v4l2_subdev_call(bcap_dev->sd, video, s_routing, | |
647 | route->input, route->output, 0); | |
648 | if ((ret < 0) && (ret != -ENOIOCTLCMD)) { | |
649 | v4l2_err(&bcap_dev->v4l2_dev, "Failed to set input\n"); | |
650 | return ret; | |
651 | } | |
652 | bcap_dev->cur_input = index; | |
653 | return 0; | |
654 | } | |
655 | ||
656 | static int bcap_try_format(struct bcap_device *bcap, | |
657 | struct v4l2_pix_format *pixfmt, | |
658 | enum v4l2_mbus_pixelcode *mbus_code, | |
659 | int *bpp) | |
660 | { | |
661 | struct bcap_format *sf = bcap->sensor_formats; | |
662 | struct bcap_format *fmt = NULL; | |
663 | struct v4l2_mbus_framefmt mbus_fmt; | |
664 | int ret, i; | |
665 | ||
666 | for (i = 0; i < bcap->num_sensor_formats; i++) { | |
667 | fmt = &sf[i]; | |
668 | if (pixfmt->pixelformat == fmt->pixelformat) | |
669 | break; | |
670 | } | |
671 | if (i == bcap->num_sensor_formats) | |
672 | fmt = &sf[0]; | |
673 | ||
674 | if (mbus_code) | |
675 | *mbus_code = fmt->mbus_code; | |
676 | if (bpp) | |
677 | *bpp = fmt->bpp; | |
678 | v4l2_fill_mbus_format(&mbus_fmt, pixfmt, fmt->mbus_code); | |
679 | ret = v4l2_subdev_call(bcap->sd, video, | |
680 | try_mbus_fmt, &mbus_fmt); | |
681 | if (ret < 0) | |
682 | return ret; | |
683 | v4l2_fill_pix_format(pixfmt, &mbus_fmt); | |
684 | pixfmt->bytesperline = pixfmt->width * fmt->bpp / 8; | |
685 | pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height; | |
686 | return 0; | |
687 | } | |
688 | ||
689 | static int bcap_enum_fmt_vid_cap(struct file *file, void *priv, | |
690 | struct v4l2_fmtdesc *fmt) | |
691 | { | |
692 | struct bcap_device *bcap_dev = video_drvdata(file); | |
693 | struct bcap_format *sf = bcap_dev->sensor_formats; | |
694 | ||
695 | if (fmt->index >= bcap_dev->num_sensor_formats) | |
696 | return -EINVAL; | |
697 | ||
698 | fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
699 | strlcpy(fmt->description, | |
700 | sf[fmt->index].desc, | |
701 | sizeof(fmt->description)); | |
702 | fmt->pixelformat = sf[fmt->index].pixelformat; | |
703 | return 0; | |
704 | } | |
705 | ||
706 | static int bcap_try_fmt_vid_cap(struct file *file, void *priv, | |
707 | struct v4l2_format *fmt) | |
708 | { | |
709 | struct bcap_device *bcap_dev = video_drvdata(file); | |
710 | struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; | |
711 | ||
712 | return bcap_try_format(bcap_dev, pixfmt, NULL, NULL); | |
713 | } | |
714 | ||
715 | static int bcap_g_fmt_vid_cap(struct file *file, void *priv, | |
716 | struct v4l2_format *fmt) | |
717 | { | |
718 | struct bcap_device *bcap_dev = video_drvdata(file); | |
719 | ||
720 | fmt->fmt.pix = bcap_dev->fmt; | |
721 | return 0; | |
722 | } | |
723 | ||
724 | static int bcap_s_fmt_vid_cap(struct file *file, void *priv, | |
725 | struct v4l2_format *fmt) | |
726 | { | |
727 | struct bcap_device *bcap_dev = video_drvdata(file); | |
728 | struct v4l2_mbus_framefmt mbus_fmt; | |
729 | enum v4l2_mbus_pixelcode mbus_code; | |
730 | struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; | |
731 | int ret, bpp; | |
732 | ||
733 | if (vb2_is_busy(&bcap_dev->buffer_queue)) | |
734 | return -EBUSY; | |
735 | ||
736 | /* see if format works */ | |
737 | ret = bcap_try_format(bcap_dev, pixfmt, &mbus_code, &bpp); | |
738 | if (ret < 0) | |
739 | return ret; | |
740 | ||
741 | v4l2_fill_mbus_format(&mbus_fmt, pixfmt, mbus_code); | |
742 | ret = v4l2_subdev_call(bcap_dev->sd, video, s_mbus_fmt, &mbus_fmt); | |
743 | if (ret < 0) | |
744 | return ret; | |
745 | bcap_dev->fmt = *pixfmt; | |
746 | bcap_dev->bpp = bpp; | |
747 | return 0; | |
748 | } | |
749 | ||
750 | static int bcap_querycap(struct file *file, void *priv, | |
751 | struct v4l2_capability *cap) | |
752 | { | |
753 | struct bcap_device *bcap_dev = video_drvdata(file); | |
754 | ||
755 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
756 | strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver)); | |
757 | strlcpy(cap->bus_info, "Blackfin Platform", sizeof(cap->bus_info)); | |
758 | strlcpy(cap->card, bcap_dev->cfg->card_name, sizeof(cap->card)); | |
759 | return 0; | |
760 | } | |
761 | ||
762 | static int bcap_g_parm(struct file *file, void *fh, | |
763 | struct v4l2_streamparm *a) | |
764 | { | |
765 | struct bcap_device *bcap_dev = video_drvdata(file); | |
766 | ||
767 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
768 | return -EINVAL; | |
769 | return v4l2_subdev_call(bcap_dev->sd, video, g_parm, a); | |
770 | } | |
771 | ||
772 | static int bcap_s_parm(struct file *file, void *fh, | |
773 | struct v4l2_streamparm *a) | |
774 | { | |
775 | struct bcap_device *bcap_dev = video_drvdata(file); | |
776 | ||
777 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
778 | return -EINVAL; | |
779 | return v4l2_subdev_call(bcap_dev->sd, video, s_parm, a); | |
780 | } | |
781 | ||
782 | static int bcap_g_chip_ident(struct file *file, void *priv, | |
783 | struct v4l2_dbg_chip_ident *chip) | |
784 | { | |
785 | struct bcap_device *bcap_dev = video_drvdata(file); | |
786 | ||
787 | chip->ident = V4L2_IDENT_NONE; | |
788 | chip->revision = 0; | |
789 | if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER && | |
790 | chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) | |
791 | return -EINVAL; | |
792 | ||
793 | return v4l2_subdev_call(bcap_dev->sd, core, | |
794 | g_chip_ident, chip); | |
795 | } | |
796 | ||
797 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
798 | static int bcap_dbg_g_register(struct file *file, void *priv, | |
799 | struct v4l2_dbg_register *reg) | |
800 | { | |
801 | struct bcap_device *bcap_dev = video_drvdata(file); | |
802 | ||
803 | return v4l2_subdev_call(bcap_dev->sd, core, | |
804 | g_register, reg); | |
805 | } | |
806 | ||
807 | static int bcap_dbg_s_register(struct file *file, void *priv, | |
808 | struct v4l2_dbg_register *reg) | |
809 | { | |
810 | struct bcap_device *bcap_dev = video_drvdata(file); | |
811 | ||
812 | return v4l2_subdev_call(bcap_dev->sd, core, | |
813 | s_register, reg); | |
814 | } | |
815 | #endif | |
816 | ||
817 | static int bcap_log_status(struct file *file, void *priv) | |
818 | { | |
819 | struct bcap_device *bcap_dev = video_drvdata(file); | |
820 | /* status for sub devices */ | |
821 | v4l2_device_call_all(&bcap_dev->v4l2_dev, 0, core, log_status); | |
822 | return 0; | |
823 | } | |
824 | ||
825 | static const struct v4l2_ioctl_ops bcap_ioctl_ops = { | |
826 | .vidioc_querycap = bcap_querycap, | |
827 | .vidioc_g_fmt_vid_cap = bcap_g_fmt_vid_cap, | |
828 | .vidioc_enum_fmt_vid_cap = bcap_enum_fmt_vid_cap, | |
829 | .vidioc_s_fmt_vid_cap = bcap_s_fmt_vid_cap, | |
830 | .vidioc_try_fmt_vid_cap = bcap_try_fmt_vid_cap, | |
831 | .vidioc_enum_input = bcap_enum_input, | |
832 | .vidioc_g_input = bcap_g_input, | |
833 | .vidioc_s_input = bcap_s_input, | |
834 | .vidioc_querystd = bcap_querystd, | |
835 | .vidioc_s_std = bcap_s_std, | |
836 | .vidioc_g_std = bcap_g_std, | |
837 | .vidioc_reqbufs = bcap_reqbufs, | |
838 | .vidioc_querybuf = bcap_querybuf, | |
839 | .vidioc_qbuf = bcap_qbuf, | |
840 | .vidioc_dqbuf = bcap_dqbuf, | |
841 | .vidioc_streamon = bcap_streamon, | |
842 | .vidioc_streamoff = bcap_streamoff, | |
843 | .vidioc_g_parm = bcap_g_parm, | |
844 | .vidioc_s_parm = bcap_s_parm, | |
845 | .vidioc_g_chip_ident = bcap_g_chip_ident, | |
846 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
847 | .vidioc_g_register = bcap_dbg_g_register, | |
848 | .vidioc_s_register = bcap_dbg_s_register, | |
849 | #endif | |
850 | .vidioc_log_status = bcap_log_status, | |
851 | }; | |
852 | ||
853 | static struct v4l2_file_operations bcap_fops = { | |
854 | .owner = THIS_MODULE, | |
855 | .open = bcap_open, | |
856 | .release = bcap_release, | |
857 | .unlocked_ioctl = video_ioctl2, | |
858 | .mmap = bcap_mmap, | |
859 | #ifndef CONFIG_MMU | |
860 | .get_unmapped_area = bcap_get_unmapped_area, | |
861 | #endif | |
862 | .poll = bcap_poll | |
863 | }; | |
864 | ||
865 | static int __devinit bcap_probe(struct platform_device *pdev) | |
866 | { | |
867 | struct bcap_device *bcap_dev; | |
868 | struct video_device *vfd; | |
869 | struct i2c_adapter *i2c_adap; | |
870 | struct bfin_capture_config *config; | |
871 | struct vb2_queue *q; | |
872 | int ret; | |
873 | ||
874 | config = pdev->dev.platform_data; | |
875 | if (!config) { | |
876 | v4l2_err(pdev->dev.driver, "Unable to get board config\n"); | |
877 | return -ENODEV; | |
878 | } | |
879 | ||
880 | bcap_dev = kzalloc(sizeof(*bcap_dev), GFP_KERNEL); | |
881 | if (!bcap_dev) { | |
882 | v4l2_err(pdev->dev.driver, "Unable to alloc bcap_dev\n"); | |
883 | return -ENOMEM; | |
884 | } | |
885 | ||
886 | bcap_dev->cfg = config; | |
887 | ||
888 | bcap_dev->ppi = ppi_create_instance(config->ppi_info); | |
889 | if (!bcap_dev->ppi) { | |
890 | v4l2_err(pdev->dev.driver, "Unable to create ppi\n"); | |
891 | ret = -ENODEV; | |
892 | goto err_free_dev; | |
893 | } | |
894 | bcap_dev->ppi->priv = bcap_dev; | |
895 | ||
896 | bcap_dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); | |
897 | if (IS_ERR(bcap_dev->alloc_ctx)) { | |
898 | ret = PTR_ERR(bcap_dev->alloc_ctx); | |
899 | goto err_free_ppi; | |
900 | } | |
901 | ||
902 | vfd = video_device_alloc(); | |
903 | if (!vfd) { | |
904 | ret = -ENOMEM; | |
905 | v4l2_err(pdev->dev.driver, "Unable to alloc video device\n"); | |
906 | goto err_cleanup_ctx; | |
907 | } | |
908 | ||
909 | /* initialize field of video device */ | |
910 | vfd->release = video_device_release; | |
911 | vfd->fops = &bcap_fops; | |
912 | vfd->ioctl_ops = &bcap_ioctl_ops; | |
913 | vfd->tvnorms = 0; | |
914 | vfd->v4l2_dev = &bcap_dev->v4l2_dev; | |
915 | set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); | |
916 | strncpy(vfd->name, CAPTURE_DRV_NAME, sizeof(vfd->name)); | |
917 | bcap_dev->video_dev = vfd; | |
918 | ||
919 | ret = v4l2_device_register(&pdev->dev, &bcap_dev->v4l2_dev); | |
920 | if (ret) { | |
921 | v4l2_err(pdev->dev.driver, | |
922 | "Unable to register v4l2 device\n"); | |
923 | goto err_release_vdev; | |
924 | } | |
925 | v4l2_info(&bcap_dev->v4l2_dev, "v4l2 device registered\n"); | |
926 | ||
927 | bcap_dev->v4l2_dev.ctrl_handler = &bcap_dev->ctrl_handler; | |
928 | ret = v4l2_ctrl_handler_init(&bcap_dev->ctrl_handler, 0); | |
929 | if (ret) { | |
930 | v4l2_err(&bcap_dev->v4l2_dev, | |
931 | "Unable to init control handler\n"); | |
932 | goto err_unreg_v4l2; | |
933 | } | |
934 | ||
935 | spin_lock_init(&bcap_dev->lock); | |
936 | /* initialize queue */ | |
937 | q = &bcap_dev->buffer_queue; | |
938 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
939 | q->io_modes = VB2_MMAP; | |
940 | q->drv_priv = bcap_dev; | |
941 | q->buf_struct_size = sizeof(struct bcap_buffer); | |
942 | q->ops = &bcap_video_qops; | |
943 | q->mem_ops = &vb2_dma_contig_memops; | |
944 | ||
945 | vb2_queue_init(q); | |
946 | ||
947 | mutex_init(&bcap_dev->mutex); | |
948 | init_completion(&bcap_dev->comp); | |
949 | ||
950 | /* init video dma queues */ | |
951 | INIT_LIST_HEAD(&bcap_dev->dma_queue); | |
952 | ||
953 | vfd->lock = &bcap_dev->mutex; | |
954 | ||
955 | /* register video device */ | |
956 | ret = video_register_device(bcap_dev->video_dev, VFL_TYPE_GRABBER, -1); | |
957 | if (ret) { | |
958 | v4l2_err(&bcap_dev->v4l2_dev, | |
959 | "Unable to register video device\n"); | |
960 | goto err_free_handler; | |
961 | } | |
962 | video_set_drvdata(bcap_dev->video_dev, bcap_dev); | |
963 | v4l2_info(&bcap_dev->v4l2_dev, "video device registered as: %s\n", | |
964 | video_device_node_name(vfd)); | |
965 | ||
966 | /* load up the subdevice */ | |
967 | i2c_adap = i2c_get_adapter(config->i2c_adapter_id); | |
968 | if (!i2c_adap) { | |
969 | v4l2_err(&bcap_dev->v4l2_dev, | |
970 | "Unable to find i2c adapter\n"); | |
971 | goto err_unreg_vdev; | |
972 | ||
973 | } | |
974 | bcap_dev->sd = v4l2_i2c_new_subdev_board(&bcap_dev->v4l2_dev, | |
975 | i2c_adap, | |
976 | &config->board_info, | |
977 | NULL); | |
978 | if (bcap_dev->sd) { | |
979 | int i; | |
980 | /* update tvnorms from the sub devices */ | |
981 | for (i = 0; i < config->num_inputs; i++) | |
982 | vfd->tvnorms |= config->inputs[i].std; | |
983 | } else { | |
984 | v4l2_err(&bcap_dev->v4l2_dev, | |
985 | "Unable to register sub device\n"); | |
986 | goto err_unreg_vdev; | |
987 | } | |
988 | ||
989 | v4l2_info(&bcap_dev->v4l2_dev, "v4l2 sub device registered\n"); | |
990 | ||
991 | /* now we can probe the default state */ | |
992 | if (vfd->tvnorms) { | |
993 | v4l2_std_id std; | |
994 | ret = v4l2_subdev_call(bcap_dev->sd, core, g_std, &std); | |
995 | if (ret) { | |
996 | v4l2_err(&bcap_dev->v4l2_dev, | |
997 | "Unable to get std\n"); | |
998 | goto err_unreg_vdev; | |
999 | } | |
1000 | bcap_dev->std = std; | |
1001 | } | |
1002 | ret = bcap_init_sensor_formats(bcap_dev); | |
1003 | if (ret) { | |
1004 | v4l2_err(&bcap_dev->v4l2_dev, | |
1005 | "Unable to create sensor formats table\n"); | |
1006 | goto err_unreg_vdev; | |
1007 | } | |
1008 | return 0; | |
1009 | err_unreg_vdev: | |
1010 | video_unregister_device(bcap_dev->video_dev); | |
1011 | bcap_dev->video_dev = NULL; | |
1012 | err_free_handler: | |
1013 | v4l2_ctrl_handler_free(&bcap_dev->ctrl_handler); | |
1014 | err_unreg_v4l2: | |
1015 | v4l2_device_unregister(&bcap_dev->v4l2_dev); | |
1016 | err_release_vdev: | |
1017 | if (bcap_dev->video_dev) | |
1018 | video_device_release(bcap_dev->video_dev); | |
1019 | err_cleanup_ctx: | |
1020 | vb2_dma_contig_cleanup_ctx(bcap_dev->alloc_ctx); | |
1021 | err_free_ppi: | |
1022 | ppi_delete_instance(bcap_dev->ppi); | |
1023 | err_free_dev: | |
1024 | kfree(bcap_dev); | |
1025 | return ret; | |
1026 | } | |
1027 | ||
1028 | static int __devexit bcap_remove(struct platform_device *pdev) | |
1029 | { | |
1030 | struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); | |
1031 | struct bcap_device *bcap_dev = container_of(v4l2_dev, | |
1032 | struct bcap_device, v4l2_dev); | |
1033 | ||
1034 | bcap_free_sensor_formats(bcap_dev); | |
1035 | video_unregister_device(bcap_dev->video_dev); | |
1036 | v4l2_ctrl_handler_free(&bcap_dev->ctrl_handler); | |
1037 | v4l2_device_unregister(v4l2_dev); | |
1038 | vb2_dma_contig_cleanup_ctx(bcap_dev->alloc_ctx); | |
1039 | ppi_delete_instance(bcap_dev->ppi); | |
1040 | kfree(bcap_dev); | |
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | static struct platform_driver bcap_driver = { | |
1045 | .driver = { | |
1046 | .name = CAPTURE_DRV_NAME, | |
1047 | .owner = THIS_MODULE, | |
1048 | }, | |
1049 | .probe = bcap_probe, | |
1050 | .remove = __devexit_p(bcap_remove), | |
1051 | }; | |
1052 | ||
1053 | static __init int bcap_init(void) | |
1054 | { | |
1055 | return platform_driver_register(&bcap_driver); | |
1056 | } | |
1057 | ||
1058 | static __exit void bcap_exit(void) | |
1059 | { | |
1060 | platform_driver_unregister(&bcap_driver); | |
1061 | } | |
1062 | ||
1063 | module_init(bcap_init); | |
1064 | module_exit(bcap_exit); | |
1065 | ||
1066 | MODULE_DESCRIPTION("Analog Devices blackfin video capture driver"); | |
1067 | MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>"); | |
1068 | MODULE_LICENSE("GPL v2"); |