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97d97422 SN |
1 | /* |
2 | * Samsung S5P/EXYNOS4 SoC series FIMC (video postprocessor) driver | |
3 | * | |
4 | * Copyright (C) 2012 Samsung Electronics Co., Ltd. | |
5 | * Sylwester Nawrocki, <s.nawrocki@samsung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published | |
9 | * by the Free Software Foundation, either version 2 of the License, | |
10 | * or (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/types.h> | |
16 | #include <linux/errno.h> | |
17 | #include <linux/bug.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/device.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/pm_runtime.h> | |
22 | #include <linux/list.h> | |
23 | #include <linux/io.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/clk.h> | |
26 | #include <media/v4l2-ioctl.h> | |
27 | #include <media/videobuf2-core.h> | |
28 | #include <media/videobuf2-dma-contig.h> | |
29 | ||
30 | #include "fimc-core.h" | |
31 | #include "fimc-mdevice.h" | |
32 | ||
33 | ||
34 | static unsigned int get_m2m_fmt_flags(unsigned int stream_type) | |
35 | { | |
36 | if (stream_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) | |
37 | return FMT_FLAGS_M2M_IN; | |
38 | else | |
39 | return FMT_FLAGS_M2M_OUT; | |
40 | } | |
41 | ||
42 | void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state) | |
43 | { | |
44 | struct vb2_buffer *src_vb, *dst_vb; | |
45 | ||
46 | if (!ctx || !ctx->m2m_ctx) | |
47 | return; | |
48 | ||
49 | src_vb = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); | |
50 | dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); | |
51 | ||
52 | if (src_vb && dst_vb) { | |
53 | v4l2_m2m_buf_done(src_vb, vb_state); | |
54 | v4l2_m2m_buf_done(dst_vb, vb_state); | |
55 | v4l2_m2m_job_finish(ctx->fimc_dev->m2m.m2m_dev, | |
56 | ctx->m2m_ctx); | |
57 | } | |
58 | } | |
59 | ||
60 | /* Complete the transaction which has been scheduled for execution. */ | |
61 | static int fimc_m2m_shutdown(struct fimc_ctx *ctx) | |
62 | { | |
63 | struct fimc_dev *fimc = ctx->fimc_dev; | |
64 | int ret; | |
65 | ||
66 | if (!fimc_m2m_pending(fimc)) | |
67 | return 0; | |
68 | ||
69 | fimc_ctx_state_set(FIMC_CTX_SHUT, ctx); | |
70 | ||
71 | ret = wait_event_timeout(fimc->irq_queue, | |
72 | !fimc_ctx_state_is_set(FIMC_CTX_SHUT, ctx), | |
73 | FIMC_SHUTDOWN_TIMEOUT); | |
74 | ||
75 | return ret == 0 ? -ETIMEDOUT : ret; | |
76 | } | |
77 | ||
78 | static int start_streaming(struct vb2_queue *q, unsigned int count) | |
79 | { | |
80 | struct fimc_ctx *ctx = q->drv_priv; | |
81 | int ret; | |
82 | ||
83 | ret = pm_runtime_get_sync(&ctx->fimc_dev->pdev->dev); | |
84 | return ret > 0 ? 0 : ret; | |
85 | } | |
86 | ||
87 | static int stop_streaming(struct vb2_queue *q) | |
88 | { | |
89 | struct fimc_ctx *ctx = q->drv_priv; | |
90 | int ret; | |
91 | ||
92 | ret = fimc_m2m_shutdown(ctx); | |
93 | if (ret == -ETIMEDOUT) | |
94 | fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR); | |
95 | ||
96 | pm_runtime_put(&ctx->fimc_dev->pdev->dev); | |
97 | return 0; | |
98 | } | |
99 | ||
100 | static void fimc_device_run(void *priv) | |
101 | { | |
102 | struct vb2_buffer *vb = NULL; | |
103 | struct fimc_ctx *ctx = priv; | |
104 | struct fimc_frame *sf, *df; | |
105 | struct fimc_dev *fimc; | |
106 | unsigned long flags; | |
107 | u32 ret; | |
108 | ||
109 | if (WARN(!ctx, "Null context\n")) | |
110 | return; | |
111 | ||
112 | fimc = ctx->fimc_dev; | |
113 | spin_lock_irqsave(&fimc->slock, flags); | |
114 | ||
115 | set_bit(ST_M2M_PEND, &fimc->state); | |
116 | sf = &ctx->s_frame; | |
117 | df = &ctx->d_frame; | |
118 | ||
119 | if (ctx->state & FIMC_PARAMS) { | |
120 | /* Prepare the DMA offsets for scaler */ | |
121 | fimc_prepare_dma_offset(ctx, sf); | |
122 | fimc_prepare_dma_offset(ctx, df); | |
123 | } | |
124 | ||
125 | vb = v4l2_m2m_next_src_buf(ctx->m2m_ctx); | |
126 | ret = fimc_prepare_addr(ctx, vb, sf, &sf->paddr); | |
127 | if (ret) | |
128 | goto dma_unlock; | |
129 | ||
130 | vb = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); | |
131 | ret = fimc_prepare_addr(ctx, vb, df, &df->paddr); | |
132 | if (ret) | |
133 | goto dma_unlock; | |
134 | ||
135 | /* Reconfigure hardware if the context has changed. */ | |
136 | if (fimc->m2m.ctx != ctx) { | |
137 | ctx->state |= FIMC_PARAMS; | |
138 | fimc->m2m.ctx = ctx; | |
139 | } | |
140 | ||
141 | if (ctx->state & FIMC_PARAMS) { | |
142 | fimc_set_yuv_order(ctx); | |
143 | fimc_hw_set_input_path(ctx); | |
144 | fimc_hw_set_in_dma(ctx); | |
145 | ret = fimc_set_scaler_info(ctx); | |
146 | if (ret) | |
147 | goto dma_unlock; | |
148 | fimc_hw_set_prescaler(ctx); | |
149 | fimc_hw_set_mainscaler(ctx); | |
150 | fimc_hw_set_target_format(ctx); | |
151 | fimc_hw_set_rotation(ctx); | |
152 | fimc_hw_set_effect(ctx, false); | |
153 | fimc_hw_set_out_dma(ctx); | |
154 | if (fimc->variant->has_alpha) | |
155 | fimc_hw_set_rgb_alpha(ctx); | |
156 | fimc_hw_set_output_path(ctx); | |
157 | } | |
158 | fimc_hw_set_input_addr(fimc, &sf->paddr); | |
159 | fimc_hw_set_output_addr(fimc, &df->paddr, -1); | |
160 | ||
161 | fimc_activate_capture(ctx); | |
162 | ctx->state &= (FIMC_CTX_M2M | FIMC_CTX_CAP | | |
163 | FIMC_SRC_FMT | FIMC_DST_FMT); | |
164 | fimc_hw_activate_input_dma(fimc, true); | |
165 | ||
166 | dma_unlock: | |
167 | spin_unlock_irqrestore(&fimc->slock, flags); | |
168 | } | |
169 | ||
170 | static void fimc_job_abort(void *priv) | |
171 | { | |
172 | fimc_m2m_shutdown(priv); | |
173 | } | |
174 | ||
175 | static int fimc_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, | |
176 | unsigned int *num_buffers, unsigned int *num_planes, | |
177 | unsigned int sizes[], void *allocators[]) | |
178 | { | |
179 | struct fimc_ctx *ctx = vb2_get_drv_priv(vq); | |
180 | struct fimc_frame *f; | |
181 | int i; | |
182 | ||
183 | f = ctx_get_frame(ctx, vq->type); | |
184 | if (IS_ERR(f)) | |
185 | return PTR_ERR(f); | |
186 | /* | |
187 | * Return number of non-contigous planes (plane buffers) | |
188 | * depending on the configured color format. | |
189 | */ | |
190 | if (!f->fmt) | |
191 | return -EINVAL; | |
192 | ||
193 | *num_planes = f->fmt->memplanes; | |
194 | for (i = 0; i < f->fmt->memplanes; i++) { | |
195 | sizes[i] = (f->f_width * f->f_height * f->fmt->depth[i]) / 8; | |
196 | allocators[i] = ctx->fimc_dev->alloc_ctx; | |
197 | } | |
198 | return 0; | |
199 | } | |
200 | ||
201 | static int fimc_buf_prepare(struct vb2_buffer *vb) | |
202 | { | |
203 | struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); | |
204 | struct fimc_frame *frame; | |
205 | int i; | |
206 | ||
207 | frame = ctx_get_frame(ctx, vb->vb2_queue->type); | |
208 | if (IS_ERR(frame)) | |
209 | return PTR_ERR(frame); | |
210 | ||
211 | for (i = 0; i < frame->fmt->memplanes; i++) | |
212 | vb2_set_plane_payload(vb, i, frame->payload[i]); | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
217 | static void fimc_buf_queue(struct vb2_buffer *vb) | |
218 | { | |
219 | struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); | |
220 | ||
221 | dbg("ctx: %p, ctx->state: 0x%x", ctx, ctx->state); | |
222 | ||
223 | if (ctx->m2m_ctx) | |
224 | v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); | |
225 | } | |
226 | ||
227 | static void fimc_lock(struct vb2_queue *vq) | |
228 | { | |
229 | struct fimc_ctx *ctx = vb2_get_drv_priv(vq); | |
230 | mutex_lock(&ctx->fimc_dev->lock); | |
231 | } | |
232 | ||
233 | static void fimc_unlock(struct vb2_queue *vq) | |
234 | { | |
235 | struct fimc_ctx *ctx = vb2_get_drv_priv(vq); | |
236 | mutex_unlock(&ctx->fimc_dev->lock); | |
237 | } | |
238 | ||
239 | static struct vb2_ops fimc_qops = { | |
240 | .queue_setup = fimc_queue_setup, | |
241 | .buf_prepare = fimc_buf_prepare, | |
242 | .buf_queue = fimc_buf_queue, | |
243 | .wait_prepare = fimc_unlock, | |
244 | .wait_finish = fimc_lock, | |
245 | .stop_streaming = stop_streaming, | |
246 | .start_streaming = start_streaming, | |
247 | }; | |
248 | ||
249 | /* | |
250 | * V4L2 ioctl handlers | |
251 | */ | |
252 | static int fimc_m2m_querycap(struct file *file, void *fh, | |
253 | struct v4l2_capability *cap) | |
254 | { | |
255 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
256 | struct fimc_dev *fimc = ctx->fimc_dev; | |
257 | ||
258 | strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1); | |
259 | strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1); | |
260 | cap->bus_info[0] = 0; | |
261 | cap->capabilities = V4L2_CAP_STREAMING | | |
262 | V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_VIDEO_OUTPUT_MPLANE; | |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
267 | static int fimc_m2m_enum_fmt_mplane(struct file *file, void *priv, | |
268 | struct v4l2_fmtdesc *f) | |
269 | { | |
270 | struct fimc_fmt *fmt; | |
271 | ||
272 | fmt = fimc_find_format(NULL, NULL, get_m2m_fmt_flags(f->type), | |
273 | f->index); | |
274 | if (!fmt) | |
275 | return -EINVAL; | |
276 | ||
277 | strncpy(f->description, fmt->name, sizeof(f->description) - 1); | |
278 | f->pixelformat = fmt->fourcc; | |
279 | return 0; | |
280 | } | |
281 | ||
282 | static int fimc_m2m_g_fmt_mplane(struct file *file, void *fh, | |
283 | struct v4l2_format *f) | |
284 | { | |
285 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
286 | struct fimc_frame *frame = ctx_get_frame(ctx, f->type); | |
287 | ||
288 | if (IS_ERR(frame)) | |
289 | return PTR_ERR(frame); | |
290 | ||
291 | return fimc_fill_format(frame, f); | |
292 | } | |
293 | ||
294 | static int fimc_try_fmt_mplane(struct fimc_ctx *ctx, struct v4l2_format *f) | |
295 | { | |
296 | struct fimc_dev *fimc = ctx->fimc_dev; | |
297 | struct samsung_fimc_variant *variant = fimc->variant; | |
298 | struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; | |
299 | struct fimc_fmt *fmt; | |
300 | u32 max_w, mod_x, mod_y; | |
301 | ||
302 | if (!IS_M2M(f->type)) | |
303 | return -EINVAL; | |
304 | ||
305 | dbg("w: %d, h: %d", pix->width, pix->height); | |
306 | ||
307 | fmt = fimc_find_format(&pix->pixelformat, NULL, | |
308 | get_m2m_fmt_flags(f->type), 0); | |
309 | if (WARN(fmt == NULL, "Pixel format lookup failed")) | |
310 | return -EINVAL; | |
311 | ||
312 | if (pix->field == V4L2_FIELD_ANY) | |
313 | pix->field = V4L2_FIELD_NONE; | |
314 | else if (pix->field != V4L2_FIELD_NONE) | |
315 | return -EINVAL; | |
316 | ||
317 | if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { | |
318 | max_w = variant->pix_limit->scaler_dis_w; | |
319 | mod_x = ffs(variant->min_inp_pixsize) - 1; | |
320 | } else { | |
321 | max_w = variant->pix_limit->out_rot_dis_w; | |
322 | mod_x = ffs(variant->min_out_pixsize) - 1; | |
323 | } | |
324 | ||
325 | if (tiled_fmt(fmt)) { | |
326 | mod_x = 6; /* 64 x 32 pixels tile */ | |
327 | mod_y = 5; | |
328 | } else { | |
329 | if (variant->min_vsize_align == 1) | |
330 | mod_y = fimc_fmt_is_rgb(fmt->color) ? 0 : 1; | |
331 | else | |
332 | mod_y = ffs(variant->min_vsize_align) - 1; | |
333 | } | |
334 | ||
335 | v4l_bound_align_image(&pix->width, 16, max_w, mod_x, | |
336 | &pix->height, 8, variant->pix_limit->scaler_dis_w, mod_y, 0); | |
337 | ||
338 | fimc_adjust_mplane_format(fmt, pix->width, pix->height, &f->fmt.pix_mp); | |
339 | return 0; | |
340 | } | |
341 | ||
342 | static int fimc_m2m_try_fmt_mplane(struct file *file, void *fh, | |
343 | struct v4l2_format *f) | |
344 | { | |
345 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
346 | ||
347 | return fimc_try_fmt_mplane(ctx, f); | |
348 | } | |
349 | ||
350 | static int fimc_m2m_s_fmt_mplane(struct file *file, void *fh, | |
351 | struct v4l2_format *f) | |
352 | { | |
353 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
354 | struct fimc_dev *fimc = ctx->fimc_dev; | |
355 | struct vb2_queue *vq; | |
356 | struct fimc_frame *frame; | |
357 | struct v4l2_pix_format_mplane *pix; | |
358 | int i, ret = 0; | |
359 | ||
360 | ret = fimc_try_fmt_mplane(ctx, f); | |
361 | if (ret) | |
362 | return ret; | |
363 | ||
364 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
365 | ||
366 | if (vb2_is_busy(vq)) { | |
367 | v4l2_err(fimc->m2m.vfd, "queue (%d) busy\n", f->type); | |
368 | return -EBUSY; | |
369 | } | |
370 | ||
371 | if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) | |
372 | frame = &ctx->s_frame; | |
373 | else | |
374 | frame = &ctx->d_frame; | |
375 | ||
376 | pix = &f->fmt.pix_mp; | |
377 | frame->fmt = fimc_find_format(&pix->pixelformat, NULL, | |
378 | get_m2m_fmt_flags(f->type), 0); | |
379 | if (!frame->fmt) | |
380 | return -EINVAL; | |
381 | ||
382 | /* Update RGB Alpha control state and value range */ | |
383 | fimc_alpha_ctrl_update(ctx); | |
384 | ||
385 | for (i = 0; i < frame->fmt->colplanes; i++) { | |
386 | frame->payload[i] = | |
387 | (pix->width * pix->height * frame->fmt->depth[i]) / 8; | |
388 | } | |
389 | ||
390 | fimc_fill_frame(frame, f); | |
391 | ||
392 | ctx->scaler.enabled = 1; | |
393 | ||
394 | if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) | |
395 | fimc_ctx_state_set(FIMC_PARAMS | FIMC_DST_FMT, ctx); | |
396 | else | |
397 | fimc_ctx_state_set(FIMC_PARAMS | FIMC_SRC_FMT, ctx); | |
398 | ||
399 | dbg("f_w: %d, f_h: %d", frame->f_width, frame->f_height); | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
404 | static int fimc_m2m_reqbufs(struct file *file, void *fh, | |
405 | struct v4l2_requestbuffers *reqbufs) | |
406 | { | |
407 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
408 | ||
409 | return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); | |
410 | } | |
411 | ||
412 | static int fimc_m2m_querybuf(struct file *file, void *fh, | |
413 | struct v4l2_buffer *buf) | |
414 | { | |
415 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
416 | ||
417 | return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); | |
418 | } | |
419 | ||
420 | static int fimc_m2m_qbuf(struct file *file, void *fh, | |
421 | struct v4l2_buffer *buf) | |
422 | { | |
423 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
424 | ||
425 | return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); | |
426 | } | |
427 | ||
428 | static int fimc_m2m_dqbuf(struct file *file, void *fh, | |
429 | struct v4l2_buffer *buf) | |
430 | { | |
431 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
432 | ||
433 | return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); | |
434 | } | |
435 | ||
436 | static int fimc_m2m_streamon(struct file *file, void *fh, | |
437 | enum v4l2_buf_type type) | |
438 | { | |
439 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
440 | ||
441 | /* The source and target color format need to be set */ | |
442 | if (V4L2_TYPE_IS_OUTPUT(type)) { | |
443 | if (!fimc_ctx_state_is_set(FIMC_SRC_FMT, ctx)) | |
444 | return -EINVAL; | |
445 | } else if (!fimc_ctx_state_is_set(FIMC_DST_FMT, ctx)) { | |
446 | return -EINVAL; | |
447 | } | |
448 | ||
449 | return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); | |
450 | } | |
451 | ||
452 | static int fimc_m2m_streamoff(struct file *file, void *fh, | |
453 | enum v4l2_buf_type type) | |
454 | { | |
455 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
456 | ||
457 | return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); | |
458 | } | |
459 | ||
460 | static int fimc_m2m_cropcap(struct file *file, void *fh, | |
461 | struct v4l2_cropcap *cr) | |
462 | { | |
463 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
464 | struct fimc_frame *frame; | |
465 | ||
466 | frame = ctx_get_frame(ctx, cr->type); | |
467 | if (IS_ERR(frame)) | |
468 | return PTR_ERR(frame); | |
469 | ||
470 | cr->bounds.left = 0; | |
471 | cr->bounds.top = 0; | |
472 | cr->bounds.width = frame->o_width; | |
473 | cr->bounds.height = frame->o_height; | |
474 | cr->defrect = cr->bounds; | |
475 | ||
476 | return 0; | |
477 | } | |
478 | ||
479 | static int fimc_m2m_g_crop(struct file *file, void *fh, struct v4l2_crop *cr) | |
480 | { | |
481 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
482 | struct fimc_frame *frame; | |
483 | ||
484 | frame = ctx_get_frame(ctx, cr->type); | |
485 | if (IS_ERR(frame)) | |
486 | return PTR_ERR(frame); | |
487 | ||
488 | cr->c.left = frame->offs_h; | |
489 | cr->c.top = frame->offs_v; | |
490 | cr->c.width = frame->width; | |
491 | cr->c.height = frame->height; | |
492 | ||
493 | return 0; | |
494 | } | |
495 | ||
496 | static int fimc_m2m_try_crop(struct fimc_ctx *ctx, struct v4l2_crop *cr) | |
497 | { | |
498 | struct fimc_dev *fimc = ctx->fimc_dev; | |
499 | struct fimc_frame *f; | |
500 | u32 min_size, halign, depth = 0; | |
501 | int i; | |
502 | ||
503 | if (cr->c.top < 0 || cr->c.left < 0) { | |
504 | v4l2_err(fimc->m2m.vfd, | |
505 | "doesn't support negative values for top & left\n"); | |
506 | return -EINVAL; | |
507 | } | |
508 | if (cr->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) | |
509 | f = &ctx->d_frame; | |
510 | else if (cr->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) | |
511 | f = &ctx->s_frame; | |
512 | else | |
513 | return -EINVAL; | |
514 | ||
515 | min_size = (f == &ctx->s_frame) ? | |
516 | fimc->variant->min_inp_pixsize : fimc->variant->min_out_pixsize; | |
517 | ||
518 | /* Get pixel alignment constraints. */ | |
519 | if (fimc->variant->min_vsize_align == 1) | |
520 | halign = fimc_fmt_is_rgb(f->fmt->color) ? 0 : 1; | |
521 | else | |
522 | halign = ffs(fimc->variant->min_vsize_align) - 1; | |
523 | ||
524 | for (i = 0; i < f->fmt->colplanes; i++) | |
525 | depth += f->fmt->depth[i]; | |
526 | ||
527 | v4l_bound_align_image(&cr->c.width, min_size, f->o_width, | |
528 | ffs(min_size) - 1, | |
529 | &cr->c.height, min_size, f->o_height, | |
530 | halign, 64/(ALIGN(depth, 8))); | |
531 | ||
532 | /* adjust left/top if cropping rectangle is out of bounds */ | |
533 | if (cr->c.left + cr->c.width > f->o_width) | |
534 | cr->c.left = f->o_width - cr->c.width; | |
535 | if (cr->c.top + cr->c.height > f->o_height) | |
536 | cr->c.top = f->o_height - cr->c.height; | |
537 | ||
538 | cr->c.left = round_down(cr->c.left, min_size); | |
539 | cr->c.top = round_down(cr->c.top, fimc->variant->hor_offs_align); | |
540 | ||
541 | dbg("l:%d, t:%d, w:%d, h:%d, f_w: %d, f_h: %d", | |
542 | cr->c.left, cr->c.top, cr->c.width, cr->c.height, | |
543 | f->f_width, f->f_height); | |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
548 | static int fimc_m2m_s_crop(struct file *file, void *fh, struct v4l2_crop *cr) | |
549 | { | |
550 | struct fimc_ctx *ctx = fh_to_ctx(fh); | |
551 | struct fimc_dev *fimc = ctx->fimc_dev; | |
552 | struct fimc_frame *f; | |
553 | int ret; | |
554 | ||
555 | ret = fimc_m2m_try_crop(ctx, cr); | |
556 | if (ret) | |
557 | return ret; | |
558 | ||
559 | f = (cr->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) ? | |
560 | &ctx->s_frame : &ctx->d_frame; | |
561 | ||
562 | /* Check to see if scaling ratio is within supported range */ | |
563 | if (fimc_ctx_state_is_set(FIMC_DST_FMT | FIMC_SRC_FMT, ctx)) { | |
564 | if (cr->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { | |
565 | ret = fimc_check_scaler_ratio(ctx, cr->c.width, | |
566 | cr->c.height, ctx->d_frame.width, | |
567 | ctx->d_frame.height, ctx->rotation); | |
568 | } else { | |
569 | ret = fimc_check_scaler_ratio(ctx, ctx->s_frame.width, | |
570 | ctx->s_frame.height, cr->c.width, | |
571 | cr->c.height, ctx->rotation); | |
572 | } | |
573 | if (ret) { | |
574 | v4l2_err(fimc->m2m.vfd, "Out of scaler range\n"); | |
575 | return -EINVAL; | |
576 | } | |
577 | } | |
578 | ||
579 | f->offs_h = cr->c.left; | |
580 | f->offs_v = cr->c.top; | |
581 | f->width = cr->c.width; | |
582 | f->height = cr->c.height; | |
583 | ||
584 | fimc_ctx_state_set(FIMC_PARAMS, ctx); | |
585 | ||
586 | return 0; | |
587 | } | |
588 | ||
589 | static const struct v4l2_ioctl_ops fimc_m2m_ioctl_ops = { | |
590 | .vidioc_querycap = fimc_m2m_querycap, | |
591 | .vidioc_enum_fmt_vid_cap_mplane = fimc_m2m_enum_fmt_mplane, | |
592 | .vidioc_enum_fmt_vid_out_mplane = fimc_m2m_enum_fmt_mplane, | |
593 | .vidioc_g_fmt_vid_cap_mplane = fimc_m2m_g_fmt_mplane, | |
594 | .vidioc_g_fmt_vid_out_mplane = fimc_m2m_g_fmt_mplane, | |
595 | .vidioc_try_fmt_vid_cap_mplane = fimc_m2m_try_fmt_mplane, | |
596 | .vidioc_try_fmt_vid_out_mplane = fimc_m2m_try_fmt_mplane, | |
597 | .vidioc_s_fmt_vid_cap_mplane = fimc_m2m_s_fmt_mplane, | |
598 | .vidioc_s_fmt_vid_out_mplane = fimc_m2m_s_fmt_mplane, | |
599 | .vidioc_reqbufs = fimc_m2m_reqbufs, | |
600 | .vidioc_querybuf = fimc_m2m_querybuf, | |
601 | .vidioc_qbuf = fimc_m2m_qbuf, | |
602 | .vidioc_dqbuf = fimc_m2m_dqbuf, | |
603 | .vidioc_streamon = fimc_m2m_streamon, | |
604 | .vidioc_streamoff = fimc_m2m_streamoff, | |
605 | .vidioc_g_crop = fimc_m2m_g_crop, | |
606 | .vidioc_s_crop = fimc_m2m_s_crop, | |
607 | .vidioc_cropcap = fimc_m2m_cropcap | |
608 | ||
609 | }; | |
610 | ||
611 | static int queue_init(void *priv, struct vb2_queue *src_vq, | |
612 | struct vb2_queue *dst_vq) | |
613 | { | |
614 | struct fimc_ctx *ctx = priv; | |
615 | int ret; | |
616 | ||
617 | memset(src_vq, 0, sizeof(*src_vq)); | |
618 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; | |
619 | src_vq->io_modes = VB2_MMAP | VB2_USERPTR; | |
620 | src_vq->drv_priv = ctx; | |
621 | src_vq->ops = &fimc_qops; | |
622 | src_vq->mem_ops = &vb2_dma_contig_memops; | |
623 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
624 | ||
625 | ret = vb2_queue_init(src_vq); | |
626 | if (ret) | |
627 | return ret; | |
628 | ||
629 | memset(dst_vq, 0, sizeof(*dst_vq)); | |
630 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; | |
631 | dst_vq->io_modes = VB2_MMAP | VB2_USERPTR; | |
632 | dst_vq->drv_priv = ctx; | |
633 | dst_vq->ops = &fimc_qops; | |
634 | dst_vq->mem_ops = &vb2_dma_contig_memops; | |
635 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
636 | ||
637 | return vb2_queue_init(dst_vq); | |
638 | } | |
639 | ||
640 | static int fimc_m2m_open(struct file *file) | |
641 | { | |
642 | struct fimc_dev *fimc = video_drvdata(file); | |
643 | struct fimc_ctx *ctx; | |
644 | int ret; | |
645 | ||
646 | dbg("pid: %d, state: 0x%lx, refcnt: %d", | |
647 | task_pid_nr(current), fimc->state, fimc->vid_cap.refcnt); | |
648 | ||
649 | /* | |
650 | * Return if the corresponding video capture node | |
651 | * is already opened. | |
652 | */ | |
653 | if (fimc->vid_cap.refcnt > 0) | |
654 | return -EBUSY; | |
655 | ||
656 | ctx = kzalloc(sizeof *ctx, GFP_KERNEL); | |
657 | if (!ctx) | |
658 | return -ENOMEM; | |
659 | v4l2_fh_init(&ctx->fh, fimc->m2m.vfd); | |
660 | ctx->fimc_dev = fimc; | |
661 | ||
662 | /* Default color format */ | |
663 | ctx->s_frame.fmt = fimc_get_format(0); | |
664 | ctx->d_frame.fmt = fimc_get_format(0); | |
665 | ||
666 | ret = fimc_ctrls_create(ctx); | |
667 | if (ret) | |
668 | goto error_fh; | |
669 | ||
670 | /* Use separate control handler per file handle */ | |
671 | ctx->fh.ctrl_handler = &ctx->ctrl_handler; | |
672 | file->private_data = &ctx->fh; | |
673 | v4l2_fh_add(&ctx->fh); | |
674 | ||
675 | /* Setup the device context for memory-to-memory mode */ | |
676 | ctx->state = FIMC_CTX_M2M; | |
677 | ctx->flags = 0; | |
678 | ctx->in_path = FIMC_DMA; | |
679 | ctx->out_path = FIMC_DMA; | |
680 | ||
681 | ctx->m2m_ctx = v4l2_m2m_ctx_init(fimc->m2m.m2m_dev, ctx, queue_init); | |
682 | if (IS_ERR(ctx->m2m_ctx)) { | |
683 | ret = PTR_ERR(ctx->m2m_ctx); | |
684 | goto error_c; | |
685 | } | |
686 | ||
687 | if (fimc->m2m.refcnt++ == 0) | |
688 | set_bit(ST_M2M_RUN, &fimc->state); | |
689 | return 0; | |
690 | ||
691 | error_c: | |
692 | fimc_ctrls_delete(ctx); | |
693 | error_fh: | |
694 | v4l2_fh_del(&ctx->fh); | |
695 | v4l2_fh_exit(&ctx->fh); | |
696 | kfree(ctx); | |
697 | return ret; | |
698 | } | |
699 | ||
700 | static int fimc_m2m_release(struct file *file) | |
701 | { | |
702 | struct fimc_ctx *ctx = fh_to_ctx(file->private_data); | |
703 | struct fimc_dev *fimc = ctx->fimc_dev; | |
704 | ||
705 | dbg("pid: %d, state: 0x%lx, refcnt= %d", | |
706 | task_pid_nr(current), fimc->state, fimc->m2m.refcnt); | |
707 | ||
708 | v4l2_m2m_ctx_release(ctx->m2m_ctx); | |
709 | fimc_ctrls_delete(ctx); | |
710 | v4l2_fh_del(&ctx->fh); | |
711 | v4l2_fh_exit(&ctx->fh); | |
712 | ||
713 | if (--fimc->m2m.refcnt <= 0) | |
714 | clear_bit(ST_M2M_RUN, &fimc->state); | |
715 | kfree(ctx); | |
716 | return 0; | |
717 | } | |
718 | ||
719 | static unsigned int fimc_m2m_poll(struct file *file, | |
720 | struct poll_table_struct *wait) | |
721 | { | |
722 | struct fimc_ctx *ctx = fh_to_ctx(file->private_data); | |
723 | ||
724 | return v4l2_m2m_poll(file, ctx->m2m_ctx, wait); | |
725 | } | |
726 | ||
727 | ||
728 | static int fimc_m2m_mmap(struct file *file, struct vm_area_struct *vma) | |
729 | { | |
730 | struct fimc_ctx *ctx = fh_to_ctx(file->private_data); | |
731 | ||
732 | return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); | |
733 | } | |
734 | ||
735 | static const struct v4l2_file_operations fimc_m2m_fops = { | |
736 | .owner = THIS_MODULE, | |
737 | .open = fimc_m2m_open, | |
738 | .release = fimc_m2m_release, | |
739 | .poll = fimc_m2m_poll, | |
740 | .unlocked_ioctl = video_ioctl2, | |
741 | .mmap = fimc_m2m_mmap, | |
742 | }; | |
743 | ||
744 | static struct v4l2_m2m_ops m2m_ops = { | |
745 | .device_run = fimc_device_run, | |
746 | .job_abort = fimc_job_abort, | |
747 | }; | |
748 | ||
749 | int fimc_register_m2m_device(struct fimc_dev *fimc, | |
750 | struct v4l2_device *v4l2_dev) | |
751 | { | |
752 | struct video_device *vfd; | |
753 | struct platform_device *pdev; | |
754 | int ret = 0; | |
755 | ||
756 | if (!fimc) | |
757 | return -ENODEV; | |
758 | ||
759 | pdev = fimc->pdev; | |
760 | fimc->v4l2_dev = v4l2_dev; | |
761 | ||
762 | vfd = video_device_alloc(); | |
763 | if (!vfd) { | |
764 | v4l2_err(v4l2_dev, "Failed to allocate video device\n"); | |
765 | return -ENOMEM; | |
766 | } | |
767 | ||
768 | vfd->fops = &fimc_m2m_fops; | |
769 | vfd->ioctl_ops = &fimc_m2m_ioctl_ops; | |
770 | vfd->v4l2_dev = v4l2_dev; | |
771 | vfd->minor = -1; | |
772 | vfd->release = video_device_release; | |
773 | vfd->lock = &fimc->lock; | |
774 | /* Locking in file operations other than ioctl should be done | |
775 | by the driver, not the V4L2 core. | |
776 | This driver needs auditing so that this flag can be removed. */ | |
777 | set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags); | |
778 | ||
693f5c40 | 779 | snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.m2m", fimc->id); |
97d97422 SN |
780 | video_set_drvdata(vfd, fimc); |
781 | ||
782 | fimc->m2m.vfd = vfd; | |
783 | fimc->m2m.m2m_dev = v4l2_m2m_init(&m2m_ops); | |
784 | if (IS_ERR(fimc->m2m.m2m_dev)) { | |
785 | v4l2_err(v4l2_dev, "failed to initialize v4l2-m2m device\n"); | |
786 | ret = PTR_ERR(fimc->m2m.m2m_dev); | |
787 | goto err_init; | |
788 | } | |
789 | ||
790 | ret = media_entity_init(&vfd->entity, 0, NULL, 0); | |
693f5c40 SN |
791 | if (ret) |
792 | goto err_me; | |
793 | ||
794 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); | |
795 | if (ret) | |
796 | goto err_vd; | |
797 | ||
798 | v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", | |
799 | vfd->name, video_device_node_name(vfd)); | |
800 | return 0; | |
97d97422 | 801 | |
693f5c40 SN |
802 | err_vd: |
803 | media_entity_cleanup(&vfd->entity); | |
804 | err_me: | |
97d97422 SN |
805 | v4l2_m2m_release(fimc->m2m.m2m_dev); |
806 | err_init: | |
807 | video_device_release(fimc->m2m.vfd); | |
808 | return ret; | |
809 | } | |
810 | ||
811 | void fimc_unregister_m2m_device(struct fimc_dev *fimc) | |
812 | { | |
813 | if (!fimc) | |
814 | return; | |
815 | ||
816 | if (fimc->m2m.m2m_dev) | |
817 | v4l2_m2m_release(fimc->m2m.m2m_dev); | |
818 | if (fimc->m2m.vfd) { | |
819 | media_entity_cleanup(&fimc->m2m.vfd->entity); | |
820 | /* Can also be called if video device wasn't registered */ | |
821 | video_unregister_device(fimc->m2m.vfd); | |
822 | } | |
823 | } |