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5d718338 SK |
1 | /* |
2 | * Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd. | |
3 | * http://www.samsung.com | |
4 | * | |
5 | * Samsung EXYNOS5 SoC series G-Scaler driver | |
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> | |
5d718338 SK |
15 | #include <linux/types.h> |
16 | #include <linux/errno.h> | |
17 | #include <linux/bug.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/workqueue.h> | |
20 | #include <linux/device.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <linux/list.h> | |
23 | #include <linux/io.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/clk.h> | |
26 | ||
27 | #include <media/v4l2-ioctl.h> | |
28 | ||
29 | #include "gsc-core.h" | |
30 | ||
31 | static int gsc_m2m_ctx_stop_req(struct gsc_ctx *ctx) | |
32 | { | |
33 | struct gsc_ctx *curr_ctx; | |
34 | struct gsc_dev *gsc = ctx->gsc_dev; | |
35 | int ret; | |
36 | ||
37 | curr_ctx = v4l2_m2m_get_curr_priv(gsc->m2m.m2m_dev); | |
38 | if (!gsc_m2m_pending(gsc) || (curr_ctx != ctx)) | |
39 | return 0; | |
40 | ||
41 | gsc_ctx_state_lock_set(GSC_CTX_STOP_REQ, ctx); | |
42 | ret = wait_event_timeout(gsc->irq_queue, | |
43 | !gsc_ctx_state_is_set(GSC_CTX_STOP_REQ, ctx), | |
44 | GSC_SHUTDOWN_TIMEOUT); | |
45 | ||
46 | return ret == 0 ? -ETIMEDOUT : ret; | |
47 | } | |
48 | ||
d9315160 SAB |
49 | static void __gsc_m2m_job_abort(struct gsc_ctx *ctx) |
50 | { | |
51 | int ret; | |
52 | ||
53 | ret = gsc_m2m_ctx_stop_req(ctx); | |
54 | if ((ret == -ETIMEDOUT) || (ctx->state & GSC_CTX_ABORT)) { | |
55 | gsc_ctx_state_lock_clear(GSC_CTX_STOP_REQ | GSC_CTX_ABORT, ctx); | |
56 | gsc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR); | |
57 | } | |
58 | } | |
59 | ||
5d718338 SK |
60 | static int gsc_m2m_start_streaming(struct vb2_queue *q, unsigned int count) |
61 | { | |
62 | struct gsc_ctx *ctx = q->drv_priv; | |
63 | int ret; | |
64 | ||
65 | ret = pm_runtime_get_sync(&ctx->gsc_dev->pdev->dev); | |
66 | return ret > 0 ? 0 : ret; | |
67 | } | |
68 | ||
69 | static int gsc_m2m_stop_streaming(struct vb2_queue *q) | |
70 | { | |
71 | struct gsc_ctx *ctx = q->drv_priv; | |
5d718338 | 72 | |
d9315160 | 73 | __gsc_m2m_job_abort(ctx); |
5d718338 SK |
74 | |
75 | pm_runtime_put(&ctx->gsc_dev->pdev->dev); | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
80 | void gsc_m2m_job_finish(struct gsc_ctx *ctx, int vb_state) | |
81 | { | |
82 | struct vb2_buffer *src_vb, *dst_vb; | |
83 | ||
84 | if (!ctx || !ctx->m2m_ctx) | |
85 | return; | |
86 | ||
87 | src_vb = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); | |
88 | dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); | |
89 | ||
90 | if (src_vb && dst_vb) { | |
599b0892 SA |
91 | dst_vb->v4l2_buf.timestamp = src_vb->v4l2_buf.timestamp; |
92 | dst_vb->v4l2_buf.timecode = src_vb->v4l2_buf.timecode; | |
309f4d62 SA |
93 | dst_vb->v4l2_buf.flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK; |
94 | dst_vb->v4l2_buf.flags |= | |
95 | src_vb->v4l2_buf.flags | |
96 | & V4L2_BUF_FLAG_TSTAMP_SRC_MASK; | |
9c303ec6 | 97 | |
5d718338 SK |
98 | v4l2_m2m_buf_done(src_vb, vb_state); |
99 | v4l2_m2m_buf_done(dst_vb, vb_state); | |
100 | ||
101 | v4l2_m2m_job_finish(ctx->gsc_dev->m2m.m2m_dev, | |
102 | ctx->m2m_ctx); | |
103 | } | |
104 | } | |
105 | ||
5d718338 SK |
106 | static void gsc_m2m_job_abort(void *priv) |
107 | { | |
d9315160 | 108 | __gsc_m2m_job_abort((struct gsc_ctx *)priv); |
5d718338 SK |
109 | } |
110 | ||
f60e160e | 111 | static int gsc_get_bufs(struct gsc_ctx *ctx) |
5d718338 SK |
112 | { |
113 | struct gsc_frame *s_frame, *d_frame; | |
f60e160e | 114 | struct vb2_buffer *src_vb, *dst_vb; |
5d718338 SK |
115 | int ret; |
116 | ||
117 | s_frame = &ctx->s_frame; | |
118 | d_frame = &ctx->d_frame; | |
119 | ||
f60e160e SAB |
120 | src_vb = v4l2_m2m_next_src_buf(ctx->m2m_ctx); |
121 | ret = gsc_prepare_addr(ctx, src_vb, s_frame, &s_frame->addr); | |
122 | if (ret) | |
123 | return ret; | |
124 | ||
125 | dst_vb = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); | |
126 | ret = gsc_prepare_addr(ctx, dst_vb, d_frame, &d_frame->addr); | |
5d718338 SK |
127 | if (ret) |
128 | return ret; | |
129 | ||
f60e160e SAB |
130 | dst_vb->v4l2_buf.timestamp = src_vb->v4l2_buf.timestamp; |
131 | ||
132 | return 0; | |
5d718338 SK |
133 | } |
134 | ||
135 | static void gsc_m2m_device_run(void *priv) | |
136 | { | |
137 | struct gsc_ctx *ctx = priv; | |
138 | struct gsc_dev *gsc; | |
139 | unsigned long flags; | |
4bd0e030 | 140 | int ret; |
5d718338 SK |
141 | bool is_set = false; |
142 | ||
143 | if (WARN(!ctx, "null hardware context\n")) | |
144 | return; | |
145 | ||
146 | gsc = ctx->gsc_dev; | |
147 | spin_lock_irqsave(&gsc->slock, flags); | |
148 | ||
149 | set_bit(ST_M2M_PEND, &gsc->state); | |
150 | ||
151 | /* Reconfigure hardware if the context has changed. */ | |
152 | if (gsc->m2m.ctx != ctx) { | |
153 | pr_debug("gsc->m2m.ctx = 0x%p, current_ctx = 0x%p", | |
154 | gsc->m2m.ctx, ctx); | |
155 | ctx->state |= GSC_PARAMS; | |
156 | gsc->m2m.ctx = ctx; | |
157 | } | |
158 | ||
d9315160 | 159 | is_set = ctx->state & GSC_CTX_STOP_REQ; |
5d718338 | 160 | if (is_set) { |
d9315160 SAB |
161 | ctx->state &= ~GSC_CTX_STOP_REQ; |
162 | ctx->state |= GSC_CTX_ABORT; | |
5d718338 SK |
163 | wake_up(&gsc->irq_queue); |
164 | goto put_device; | |
165 | } | |
166 | ||
f60e160e | 167 | ret = gsc_get_bufs(ctx); |
5d718338 SK |
168 | if (ret) { |
169 | pr_err("Wrong address"); | |
170 | goto put_device; | |
171 | } | |
172 | ||
173 | gsc_set_prefbuf(gsc, &ctx->s_frame); | |
174 | gsc_hw_set_input_addr(gsc, &ctx->s_frame.addr, GSC_M2M_BUF_NUM); | |
175 | gsc_hw_set_output_addr(gsc, &ctx->d_frame.addr, GSC_M2M_BUF_NUM); | |
176 | ||
177 | if (ctx->state & GSC_PARAMS) { | |
178 | gsc_hw_set_input_buf_masking(gsc, GSC_M2M_BUF_NUM, false); | |
179 | gsc_hw_set_output_buf_masking(gsc, GSC_M2M_BUF_NUM, false); | |
180 | gsc_hw_set_frm_done_irq_mask(gsc, false); | |
181 | gsc_hw_set_gsc_irq_enable(gsc, true); | |
182 | ||
183 | if (gsc_set_scaler_info(ctx)) { | |
184 | pr_err("Scaler setup error"); | |
185 | goto put_device; | |
186 | } | |
187 | ||
188 | gsc_hw_set_input_path(ctx); | |
189 | gsc_hw_set_in_size(ctx); | |
190 | gsc_hw_set_in_image_format(ctx); | |
191 | ||
192 | gsc_hw_set_output_path(ctx); | |
193 | gsc_hw_set_out_size(ctx); | |
194 | gsc_hw_set_out_image_format(ctx); | |
195 | ||
196 | gsc_hw_set_prescaler(ctx); | |
197 | gsc_hw_set_mainscaler(ctx); | |
198 | gsc_hw_set_rotation(ctx); | |
199 | gsc_hw_set_global_alpha(ctx); | |
200 | } | |
201 | ||
202 | /* update shadow registers */ | |
203 | gsc_hw_set_sfr_update(ctx); | |
204 | ||
205 | ctx->state &= ~GSC_PARAMS; | |
206 | gsc_hw_enable_control(gsc, true); | |
207 | ||
208 | spin_unlock_irqrestore(&gsc->slock, flags); | |
209 | return; | |
210 | ||
211 | put_device: | |
212 | ctx->state &= ~GSC_PARAMS; | |
213 | spin_unlock_irqrestore(&gsc->slock, flags); | |
214 | } | |
215 | ||
216 | static int gsc_m2m_queue_setup(struct vb2_queue *vq, | |
217 | const struct v4l2_format *fmt, | |
218 | unsigned int *num_buffers, unsigned int *num_planes, | |
219 | unsigned int sizes[], void *allocators[]) | |
220 | { | |
221 | struct gsc_ctx *ctx = vb2_get_drv_priv(vq); | |
222 | struct gsc_frame *frame; | |
223 | int i; | |
224 | ||
225 | frame = ctx_get_frame(ctx, vq->type); | |
226 | if (IS_ERR(frame)) | |
227 | return PTR_ERR(frame); | |
228 | ||
229 | if (!frame->fmt) | |
230 | return -EINVAL; | |
231 | ||
232 | *num_planes = frame->fmt->num_planes; | |
233 | for (i = 0; i < frame->fmt->num_planes; i++) { | |
234 | sizes[i] = frame->payload[i]; | |
235 | allocators[i] = ctx->gsc_dev->alloc_ctx; | |
236 | } | |
237 | return 0; | |
238 | } | |
239 | ||
240 | static int gsc_m2m_buf_prepare(struct vb2_buffer *vb) | |
241 | { | |
242 | struct gsc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); | |
243 | struct gsc_frame *frame; | |
244 | int i; | |
245 | ||
246 | frame = ctx_get_frame(ctx, vb->vb2_queue->type); | |
247 | if (IS_ERR(frame)) | |
248 | return PTR_ERR(frame); | |
249 | ||
250 | if (!V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) { | |
251 | for (i = 0; i < frame->fmt->num_planes; i++) | |
252 | vb2_set_plane_payload(vb, i, frame->payload[i]); | |
253 | } | |
254 | ||
255 | return 0; | |
256 | } | |
257 | ||
258 | static void gsc_m2m_buf_queue(struct vb2_buffer *vb) | |
259 | { | |
260 | struct gsc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); | |
261 | ||
262 | pr_debug("ctx: %p, ctx->state: 0x%x", ctx, ctx->state); | |
263 | ||
264 | if (ctx->m2m_ctx) | |
265 | v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); | |
266 | } | |
267 | ||
d2331c99 | 268 | static struct vb2_ops gsc_m2m_qops = { |
5d718338 SK |
269 | .queue_setup = gsc_m2m_queue_setup, |
270 | .buf_prepare = gsc_m2m_buf_prepare, | |
271 | .buf_queue = gsc_m2m_buf_queue, | |
272 | .wait_prepare = gsc_unlock, | |
273 | .wait_finish = gsc_lock, | |
274 | .stop_streaming = gsc_m2m_stop_streaming, | |
275 | .start_streaming = gsc_m2m_start_streaming, | |
276 | }; | |
277 | ||
278 | static int gsc_m2m_querycap(struct file *file, void *fh, | |
279 | struct v4l2_capability *cap) | |
280 | { | |
281 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
282 | struct gsc_dev *gsc = ctx->gsc_dev; | |
283 | ||
284 | strlcpy(cap->driver, gsc->pdev->name, sizeof(cap->driver)); | |
285 | strlcpy(cap->card, gsc->pdev->name, sizeof(cap->card)); | |
286 | strlcpy(cap->bus_info, "platform", sizeof(cap->bus_info)); | |
287 | cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE | | |
288 | V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_VIDEO_OUTPUT_MPLANE; | |
289 | ||
290 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; | |
291 | return 0; | |
292 | } | |
293 | ||
294 | static int gsc_m2m_enum_fmt_mplane(struct file *file, void *priv, | |
295 | struct v4l2_fmtdesc *f) | |
296 | { | |
297 | return gsc_enum_fmt_mplane(f); | |
298 | } | |
299 | ||
300 | static int gsc_m2m_g_fmt_mplane(struct file *file, void *fh, | |
301 | struct v4l2_format *f) | |
302 | { | |
303 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
304 | ||
305 | return gsc_g_fmt_mplane(ctx, f); | |
306 | } | |
307 | ||
308 | static int gsc_m2m_try_fmt_mplane(struct file *file, void *fh, | |
309 | struct v4l2_format *f) | |
310 | { | |
311 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
312 | ||
313 | return gsc_try_fmt_mplane(ctx, f); | |
314 | } | |
315 | ||
316 | static int gsc_m2m_s_fmt_mplane(struct file *file, void *fh, | |
317 | struct v4l2_format *f) | |
318 | { | |
319 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
320 | struct vb2_queue *vq; | |
321 | struct gsc_frame *frame; | |
322 | struct v4l2_pix_format_mplane *pix; | |
323 | int i, ret = 0; | |
324 | ||
325 | ret = gsc_m2m_try_fmt_mplane(file, fh, f); | |
326 | if (ret) | |
327 | return ret; | |
328 | ||
329 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
330 | ||
331 | if (vb2_is_streaming(vq)) { | |
332 | pr_err("queue (%d) busy", f->type); | |
333 | return -EBUSY; | |
334 | } | |
335 | ||
336 | if (V4L2_TYPE_IS_OUTPUT(f->type)) | |
337 | frame = &ctx->s_frame; | |
338 | else | |
339 | frame = &ctx->d_frame; | |
340 | ||
341 | pix = &f->fmt.pix_mp; | |
342 | frame->fmt = find_fmt(&pix->pixelformat, NULL, 0); | |
343 | frame->colorspace = pix->colorspace; | |
344 | if (!frame->fmt) | |
345 | return -EINVAL; | |
346 | ||
347 | for (i = 0; i < frame->fmt->num_planes; i++) | |
348 | frame->payload[i] = pix->plane_fmt[i].sizeimage; | |
349 | ||
350 | gsc_set_frame_size(frame, pix->width, pix->height); | |
351 | ||
352 | if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) | |
353 | gsc_ctx_state_lock_set(GSC_PARAMS | GSC_DST_FMT, ctx); | |
354 | else | |
355 | gsc_ctx_state_lock_set(GSC_PARAMS | GSC_SRC_FMT, ctx); | |
356 | ||
357 | pr_debug("f_w: %d, f_h: %d", frame->f_width, frame->f_height); | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
362 | static int gsc_m2m_reqbufs(struct file *file, void *fh, | |
363 | struct v4l2_requestbuffers *reqbufs) | |
364 | { | |
365 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
366 | struct gsc_dev *gsc = ctx->gsc_dev; | |
367 | struct gsc_frame *frame; | |
368 | u32 max_cnt; | |
369 | ||
370 | max_cnt = (reqbufs->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) ? | |
371 | gsc->variant->in_buf_cnt : gsc->variant->out_buf_cnt; | |
372 | if (reqbufs->count > max_cnt) { | |
373 | return -EINVAL; | |
374 | } else if (reqbufs->count == 0) { | |
375 | if (reqbufs->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) | |
376 | gsc_ctx_state_lock_clear(GSC_SRC_FMT, ctx); | |
377 | else | |
378 | gsc_ctx_state_lock_clear(GSC_DST_FMT, ctx); | |
379 | } | |
380 | ||
381 | frame = ctx_get_frame(ctx, reqbufs->type); | |
382 | ||
383 | return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); | |
384 | } | |
385 | ||
371a664e SAB |
386 | static int gsc_m2m_expbuf(struct file *file, void *fh, |
387 | struct v4l2_exportbuffer *eb) | |
388 | { | |
389 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
390 | return v4l2_m2m_expbuf(file, ctx->m2m_ctx, eb); | |
391 | } | |
392 | ||
5d718338 SK |
393 | static int gsc_m2m_querybuf(struct file *file, void *fh, |
394 | struct v4l2_buffer *buf) | |
395 | { | |
396 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
397 | return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); | |
398 | } | |
399 | ||
400 | static int gsc_m2m_qbuf(struct file *file, void *fh, | |
401 | struct v4l2_buffer *buf) | |
402 | { | |
403 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
404 | return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); | |
405 | } | |
406 | ||
407 | static int gsc_m2m_dqbuf(struct file *file, void *fh, | |
408 | struct v4l2_buffer *buf) | |
409 | { | |
410 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
411 | return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); | |
412 | } | |
413 | ||
414 | static int gsc_m2m_streamon(struct file *file, void *fh, | |
415 | enum v4l2_buf_type type) | |
416 | { | |
417 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
418 | ||
419 | /* The source and target color format need to be set */ | |
420 | if (V4L2_TYPE_IS_OUTPUT(type)) { | |
421 | if (!gsc_ctx_state_is_set(GSC_SRC_FMT, ctx)) | |
422 | return -EINVAL; | |
423 | } else if (!gsc_ctx_state_is_set(GSC_DST_FMT, ctx)) { | |
424 | return -EINVAL; | |
425 | } | |
426 | ||
427 | return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); | |
428 | } | |
429 | ||
430 | static int gsc_m2m_streamoff(struct file *file, void *fh, | |
431 | enum v4l2_buf_type type) | |
432 | { | |
433 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
434 | return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); | |
435 | } | |
436 | ||
437 | /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */ | |
438 | static int is_rectangle_enclosed(struct v4l2_rect *a, struct v4l2_rect *b) | |
439 | { | |
440 | if (a->left < b->left || a->top < b->top) | |
441 | return 0; | |
442 | ||
443 | if (a->left + a->width > b->left + b->width) | |
444 | return 0; | |
445 | ||
446 | if (a->top + a->height > b->top + b->height) | |
447 | return 0; | |
448 | ||
449 | return 1; | |
450 | } | |
451 | ||
452 | static int gsc_m2m_g_selection(struct file *file, void *fh, | |
453 | struct v4l2_selection *s) | |
454 | { | |
455 | struct gsc_frame *frame; | |
456 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
457 | ||
458 | if ((s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) && | |
459 | (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) | |
460 | return -EINVAL; | |
461 | ||
462 | frame = ctx_get_frame(ctx, s->type); | |
463 | if (IS_ERR(frame)) | |
464 | return PTR_ERR(frame); | |
465 | ||
466 | switch (s->target) { | |
467 | case V4L2_SEL_TGT_COMPOSE_DEFAULT: | |
468 | case V4L2_SEL_TGT_COMPOSE_BOUNDS: | |
469 | case V4L2_SEL_TGT_CROP_BOUNDS: | |
470 | case V4L2_SEL_TGT_CROP_DEFAULT: | |
471 | s->r.left = 0; | |
472 | s->r.top = 0; | |
473 | s->r.width = frame->f_width; | |
474 | s->r.height = frame->f_height; | |
475 | return 0; | |
476 | ||
477 | case V4L2_SEL_TGT_COMPOSE: | |
478 | case V4L2_SEL_TGT_CROP: | |
479 | s->r.left = frame->crop.left; | |
480 | s->r.top = frame->crop.top; | |
481 | s->r.width = frame->crop.width; | |
482 | s->r.height = frame->crop.height; | |
483 | return 0; | |
484 | } | |
485 | ||
486 | return -EINVAL; | |
487 | } | |
488 | ||
489 | static int gsc_m2m_s_selection(struct file *file, void *fh, | |
490 | struct v4l2_selection *s) | |
491 | { | |
492 | struct gsc_frame *frame; | |
493 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
494 | struct v4l2_crop cr; | |
495 | struct gsc_variant *variant = ctx->gsc_dev->variant; | |
496 | int ret; | |
497 | ||
498 | cr.type = s->type; | |
499 | cr.c = s->r; | |
500 | ||
501 | if ((s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) && | |
502 | (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) | |
503 | return -EINVAL; | |
504 | ||
505 | ret = gsc_try_crop(ctx, &cr); | |
506 | if (ret) | |
507 | return ret; | |
508 | ||
509 | if (s->flags & V4L2_SEL_FLAG_LE && | |
510 | !is_rectangle_enclosed(&cr.c, &s->r)) | |
511 | return -ERANGE; | |
512 | ||
513 | if (s->flags & V4L2_SEL_FLAG_GE && | |
514 | !is_rectangle_enclosed(&s->r, &cr.c)) | |
515 | return -ERANGE; | |
516 | ||
517 | s->r = cr.c; | |
518 | ||
519 | switch (s->target) { | |
520 | case V4L2_SEL_TGT_COMPOSE_BOUNDS: | |
521 | case V4L2_SEL_TGT_COMPOSE_DEFAULT: | |
522 | case V4L2_SEL_TGT_COMPOSE: | |
523 | frame = &ctx->s_frame; | |
524 | break; | |
525 | ||
526 | case V4L2_SEL_TGT_CROP_BOUNDS: | |
527 | case V4L2_SEL_TGT_CROP: | |
528 | case V4L2_SEL_TGT_CROP_DEFAULT: | |
529 | frame = &ctx->d_frame; | |
530 | break; | |
531 | ||
532 | default: | |
533 | return -EINVAL; | |
534 | } | |
535 | ||
536 | /* Check to see if scaling ratio is within supported range */ | |
537 | if (gsc_ctx_state_is_set(GSC_DST_FMT | GSC_SRC_FMT, ctx)) { | |
538 | if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { | |
539 | ret = gsc_check_scaler_ratio(variant, cr.c.width, | |
540 | cr.c.height, ctx->d_frame.crop.width, | |
541 | ctx->d_frame.crop.height, | |
542 | ctx->gsc_ctrls.rotate->val, ctx->out_path); | |
543 | } else { | |
544 | ret = gsc_check_scaler_ratio(variant, | |
545 | ctx->s_frame.crop.width, | |
546 | ctx->s_frame.crop.height, cr.c.width, | |
547 | cr.c.height, ctx->gsc_ctrls.rotate->val, | |
548 | ctx->out_path); | |
549 | } | |
550 | ||
551 | if (ret) { | |
552 | pr_err("Out of scaler range"); | |
553 | return -EINVAL; | |
554 | } | |
555 | } | |
556 | ||
557 | frame->crop = cr.c; | |
558 | ||
559 | gsc_ctx_state_lock_set(GSC_PARAMS, ctx); | |
560 | return 0; | |
561 | } | |
562 | ||
563 | static const struct v4l2_ioctl_ops gsc_m2m_ioctl_ops = { | |
564 | .vidioc_querycap = gsc_m2m_querycap, | |
565 | .vidioc_enum_fmt_vid_cap_mplane = gsc_m2m_enum_fmt_mplane, | |
566 | .vidioc_enum_fmt_vid_out_mplane = gsc_m2m_enum_fmt_mplane, | |
567 | .vidioc_g_fmt_vid_cap_mplane = gsc_m2m_g_fmt_mplane, | |
568 | .vidioc_g_fmt_vid_out_mplane = gsc_m2m_g_fmt_mplane, | |
569 | .vidioc_try_fmt_vid_cap_mplane = gsc_m2m_try_fmt_mplane, | |
570 | .vidioc_try_fmt_vid_out_mplane = gsc_m2m_try_fmt_mplane, | |
571 | .vidioc_s_fmt_vid_cap_mplane = gsc_m2m_s_fmt_mplane, | |
572 | .vidioc_s_fmt_vid_out_mplane = gsc_m2m_s_fmt_mplane, | |
573 | .vidioc_reqbufs = gsc_m2m_reqbufs, | |
371a664e | 574 | .vidioc_expbuf = gsc_m2m_expbuf, |
5d718338 SK |
575 | .vidioc_querybuf = gsc_m2m_querybuf, |
576 | .vidioc_qbuf = gsc_m2m_qbuf, | |
577 | .vidioc_dqbuf = gsc_m2m_dqbuf, | |
578 | .vidioc_streamon = gsc_m2m_streamon, | |
579 | .vidioc_streamoff = gsc_m2m_streamoff, | |
580 | .vidioc_g_selection = gsc_m2m_g_selection, | |
581 | .vidioc_s_selection = gsc_m2m_s_selection | |
582 | }; | |
583 | ||
584 | static int queue_init(void *priv, struct vb2_queue *src_vq, | |
585 | struct vb2_queue *dst_vq) | |
586 | { | |
587 | struct gsc_ctx *ctx = priv; | |
588 | int ret; | |
589 | ||
590 | memset(src_vq, 0, sizeof(*src_vq)); | |
591 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; | |
371a664e | 592 | src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; |
5d718338 SK |
593 | src_vq->drv_priv = ctx; |
594 | src_vq->ops = &gsc_m2m_qops; | |
595 | src_vq->mem_ops = &vb2_dma_contig_memops; | |
596 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
ade48681 | 597 | src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
5d718338 SK |
598 | |
599 | ret = vb2_queue_init(src_vq); | |
600 | if (ret) | |
601 | return ret; | |
602 | ||
603 | memset(dst_vq, 0, sizeof(*dst_vq)); | |
604 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; | |
371a664e | 605 | dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; |
5d718338 SK |
606 | dst_vq->drv_priv = ctx; |
607 | dst_vq->ops = &gsc_m2m_qops; | |
608 | dst_vq->mem_ops = &vb2_dma_contig_memops; | |
609 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
ade48681 | 610 | dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
5d718338 SK |
611 | |
612 | return vb2_queue_init(dst_vq); | |
613 | } | |
614 | ||
615 | static int gsc_m2m_open(struct file *file) | |
616 | { | |
617 | struct gsc_dev *gsc = video_drvdata(file); | |
618 | struct gsc_ctx *ctx = NULL; | |
619 | int ret; | |
620 | ||
621 | pr_debug("pid: %d, state: 0x%lx", task_pid_nr(current), gsc->state); | |
622 | ||
623 | if (mutex_lock_interruptible(&gsc->lock)) | |
624 | return -ERESTARTSYS; | |
625 | ||
2c8cc13f | 626 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
5d718338 SK |
627 | if (!ctx) { |
628 | ret = -ENOMEM; | |
629 | goto unlock; | |
630 | } | |
631 | ||
632 | v4l2_fh_init(&ctx->fh, gsc->m2m.vfd); | |
633 | ret = gsc_ctrls_create(ctx); | |
634 | if (ret) | |
635 | goto error_fh; | |
636 | ||
637 | /* Use separate control handler per file handle */ | |
638 | ctx->fh.ctrl_handler = &ctx->ctrl_handler; | |
639 | file->private_data = &ctx->fh; | |
640 | v4l2_fh_add(&ctx->fh); | |
641 | ||
642 | ctx->gsc_dev = gsc; | |
643 | /* Default color format */ | |
644 | ctx->s_frame.fmt = get_format(0); | |
645 | ctx->d_frame.fmt = get_format(0); | |
646 | /* Setup the device context for mem2mem mode. */ | |
647 | ctx->state = GSC_CTX_M2M; | |
648 | ctx->flags = 0; | |
649 | ctx->in_path = GSC_DMA; | |
650 | ctx->out_path = GSC_DMA; | |
651 | ||
652 | ctx->m2m_ctx = v4l2_m2m_ctx_init(gsc->m2m.m2m_dev, ctx, queue_init); | |
653 | if (IS_ERR(ctx->m2m_ctx)) { | |
654 | pr_err("Failed to initialize m2m context"); | |
655 | ret = PTR_ERR(ctx->m2m_ctx); | |
656 | goto error_ctrls; | |
657 | } | |
658 | ||
659 | if (gsc->m2m.refcnt++ == 0) | |
660 | set_bit(ST_M2M_OPEN, &gsc->state); | |
661 | ||
662 | pr_debug("gsc m2m driver is opened, ctx(0x%p)", ctx); | |
663 | ||
664 | mutex_unlock(&gsc->lock); | |
665 | return 0; | |
666 | ||
667 | error_ctrls: | |
668 | gsc_ctrls_delete(ctx); | |
669 | error_fh: | |
670 | v4l2_fh_del(&ctx->fh); | |
671 | v4l2_fh_exit(&ctx->fh); | |
672 | kfree(ctx); | |
673 | unlock: | |
674 | mutex_unlock(&gsc->lock); | |
675 | return ret; | |
676 | } | |
677 | ||
678 | static int gsc_m2m_release(struct file *file) | |
679 | { | |
680 | struct gsc_ctx *ctx = fh_to_ctx(file->private_data); | |
681 | struct gsc_dev *gsc = ctx->gsc_dev; | |
682 | ||
683 | pr_debug("pid: %d, state: 0x%lx, refcnt= %d", | |
684 | task_pid_nr(current), gsc->state, gsc->m2m.refcnt); | |
685 | ||
98680180 | 686 | mutex_lock(&gsc->lock); |
5d718338 SK |
687 | |
688 | v4l2_m2m_ctx_release(ctx->m2m_ctx); | |
689 | gsc_ctrls_delete(ctx); | |
690 | v4l2_fh_del(&ctx->fh); | |
691 | v4l2_fh_exit(&ctx->fh); | |
692 | ||
693 | if (--gsc->m2m.refcnt <= 0) | |
694 | clear_bit(ST_M2M_OPEN, &gsc->state); | |
695 | kfree(ctx); | |
696 | ||
697 | mutex_unlock(&gsc->lock); | |
698 | return 0; | |
699 | } | |
700 | ||
701 | static unsigned int gsc_m2m_poll(struct file *file, | |
702 | struct poll_table_struct *wait) | |
703 | { | |
704 | struct gsc_ctx *ctx = fh_to_ctx(file->private_data); | |
705 | struct gsc_dev *gsc = ctx->gsc_dev; | |
706 | int ret; | |
707 | ||
708 | if (mutex_lock_interruptible(&gsc->lock)) | |
709 | return -ERESTARTSYS; | |
710 | ||
711 | ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait); | |
712 | mutex_unlock(&gsc->lock); | |
713 | ||
714 | return ret; | |
715 | } | |
716 | ||
717 | static int gsc_m2m_mmap(struct file *file, struct vm_area_struct *vma) | |
718 | { | |
719 | struct gsc_ctx *ctx = fh_to_ctx(file->private_data); | |
720 | struct gsc_dev *gsc = ctx->gsc_dev; | |
721 | int ret; | |
722 | ||
723 | if (mutex_lock_interruptible(&gsc->lock)) | |
724 | return -ERESTARTSYS; | |
725 | ||
726 | ret = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); | |
727 | mutex_unlock(&gsc->lock); | |
728 | ||
729 | return ret; | |
730 | } | |
731 | ||
732 | static const struct v4l2_file_operations gsc_m2m_fops = { | |
733 | .owner = THIS_MODULE, | |
734 | .open = gsc_m2m_open, | |
735 | .release = gsc_m2m_release, | |
736 | .poll = gsc_m2m_poll, | |
737 | .unlocked_ioctl = video_ioctl2, | |
738 | .mmap = gsc_m2m_mmap, | |
739 | }; | |
740 | ||
741 | static struct v4l2_m2m_ops gsc_m2m_ops = { | |
742 | .device_run = gsc_m2m_device_run, | |
743 | .job_abort = gsc_m2m_job_abort, | |
744 | }; | |
745 | ||
746 | int gsc_register_m2m_device(struct gsc_dev *gsc) | |
747 | { | |
748 | struct platform_device *pdev; | |
749 | int ret; | |
750 | ||
751 | if (!gsc) | |
752 | return -ENODEV; | |
753 | ||
754 | pdev = gsc->pdev; | |
755 | ||
756 | gsc->vdev.fops = &gsc_m2m_fops; | |
757 | gsc->vdev.ioctl_ops = &gsc_m2m_ioctl_ops; | |
758 | gsc->vdev.release = video_device_release_empty; | |
759 | gsc->vdev.lock = &gsc->lock; | |
24fc681a | 760 | gsc->vdev.vfl_dir = VFL_DIR_M2M; |
d0b1c313 | 761 | gsc->vdev.v4l2_dev = &gsc->v4l2_dev; |
5d718338 SK |
762 | snprintf(gsc->vdev.name, sizeof(gsc->vdev.name), "%s.%d:m2m", |
763 | GSC_MODULE_NAME, gsc->id); | |
764 | ||
765 | video_set_drvdata(&gsc->vdev, gsc); | |
766 | ||
767 | gsc->m2m.vfd = &gsc->vdev; | |
768 | gsc->m2m.m2m_dev = v4l2_m2m_init(&gsc_m2m_ops); | |
769 | if (IS_ERR(gsc->m2m.m2m_dev)) { | |
770 | dev_err(&pdev->dev, "failed to initialize v4l2-m2m device\n"); | |
771 | ret = PTR_ERR(gsc->m2m.m2m_dev); | |
772 | goto err_m2m_r1; | |
773 | } | |
774 | ||
775 | ret = video_register_device(&gsc->vdev, VFL_TYPE_GRABBER, -1); | |
776 | if (ret) { | |
777 | dev_err(&pdev->dev, | |
778 | "%s(): failed to register video device\n", __func__); | |
779 | goto err_m2m_r2; | |
780 | } | |
781 | ||
782 | pr_debug("gsc m2m driver registered as /dev/video%d", gsc->vdev.num); | |
783 | return 0; | |
784 | ||
785 | err_m2m_r2: | |
786 | v4l2_m2m_release(gsc->m2m.m2m_dev); | |
787 | err_m2m_r1: | |
788 | video_device_release(gsc->m2m.vfd); | |
789 | ||
790 | return ret; | |
791 | } | |
792 | ||
793 | void gsc_unregister_m2m_device(struct gsc_dev *gsc) | |
794 | { | |
795 | if (gsc) | |
796 | v4l2_m2m_release(gsc->m2m.m2m_dev); | |
797 | } |