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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 | ||
76ca0824 JMC |
69 | static void __gsc_m2m_cleanup_queue(struct gsc_ctx *ctx) |
70 | { | |
71 | struct vb2_v4l2_buffer *src_vb, *dst_vb; | |
72 | ||
73 | while (v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) > 0) { | |
74 | src_vb = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); | |
75 | v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_ERROR); | |
76 | } | |
77 | ||
78 | while (v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx) > 0) { | |
79 | dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); | |
80 | v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_ERROR); | |
81 | } | |
82 | } | |
83 | ||
e37559b2 | 84 | static void gsc_m2m_stop_streaming(struct vb2_queue *q) |
5d718338 SK |
85 | { |
86 | struct gsc_ctx *ctx = q->drv_priv; | |
5d718338 | 87 | |
d9315160 | 88 | __gsc_m2m_job_abort(ctx); |
5d718338 | 89 | |
76ca0824 JMC |
90 | __gsc_m2m_cleanup_queue(ctx); |
91 | ||
5d718338 | 92 | pm_runtime_put(&ctx->gsc_dev->pdev->dev); |
5d718338 SK |
93 | } |
94 | ||
95 | void gsc_m2m_job_finish(struct gsc_ctx *ctx, int vb_state) | |
96 | { | |
2d700715 | 97 | struct vb2_v4l2_buffer *src_vb, *dst_vb; |
5d718338 SK |
98 | |
99 | if (!ctx || !ctx->m2m_ctx) | |
100 | return; | |
101 | ||
102 | src_vb = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); | |
103 | dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); | |
104 | ||
105 | if (src_vb && dst_vb) { | |
d6dd645e | 106 | dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp; |
2d700715 JS |
107 | dst_vb->timecode = src_vb->timecode; |
108 | dst_vb->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK; | |
109 | dst_vb->flags |= | |
110 | src_vb->flags | |
309f4d62 | 111 | & V4L2_BUF_FLAG_TSTAMP_SRC_MASK; |
9c303ec6 | 112 | |
5d718338 SK |
113 | v4l2_m2m_buf_done(src_vb, vb_state); |
114 | v4l2_m2m_buf_done(dst_vb, vb_state); | |
115 | ||
116 | v4l2_m2m_job_finish(ctx->gsc_dev->m2m.m2m_dev, | |
117 | ctx->m2m_ctx); | |
118 | } | |
119 | } | |
120 | ||
5d718338 SK |
121 | static void gsc_m2m_job_abort(void *priv) |
122 | { | |
d9315160 | 123 | __gsc_m2m_job_abort((struct gsc_ctx *)priv); |
5d718338 SK |
124 | } |
125 | ||
f60e160e | 126 | static int gsc_get_bufs(struct gsc_ctx *ctx) |
5d718338 SK |
127 | { |
128 | struct gsc_frame *s_frame, *d_frame; | |
2d700715 | 129 | struct vb2_v4l2_buffer *src_vb, *dst_vb; |
5d718338 SK |
130 | int ret; |
131 | ||
132 | s_frame = &ctx->s_frame; | |
133 | d_frame = &ctx->d_frame; | |
134 | ||
f60e160e | 135 | src_vb = v4l2_m2m_next_src_buf(ctx->m2m_ctx); |
2d700715 | 136 | ret = gsc_prepare_addr(ctx, &src_vb->vb2_buf, s_frame, &s_frame->addr); |
f60e160e SAB |
137 | if (ret) |
138 | return ret; | |
139 | ||
140 | dst_vb = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); | |
2d700715 | 141 | ret = gsc_prepare_addr(ctx, &dst_vb->vb2_buf, d_frame, &d_frame->addr); |
5d718338 SK |
142 | if (ret) |
143 | return ret; | |
144 | ||
d6dd645e | 145 | dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp; |
f60e160e SAB |
146 | |
147 | return 0; | |
5d718338 SK |
148 | } |
149 | ||
150 | static void gsc_m2m_device_run(void *priv) | |
151 | { | |
152 | struct gsc_ctx *ctx = priv; | |
153 | struct gsc_dev *gsc; | |
154 | unsigned long flags; | |
4bd0e030 | 155 | int ret; |
5d718338 SK |
156 | bool is_set = false; |
157 | ||
158 | if (WARN(!ctx, "null hardware context\n")) | |
159 | return; | |
160 | ||
161 | gsc = ctx->gsc_dev; | |
162 | spin_lock_irqsave(&gsc->slock, flags); | |
163 | ||
164 | set_bit(ST_M2M_PEND, &gsc->state); | |
165 | ||
166 | /* Reconfigure hardware if the context has changed. */ | |
167 | if (gsc->m2m.ctx != ctx) { | |
168 | pr_debug("gsc->m2m.ctx = 0x%p, current_ctx = 0x%p", | |
169 | gsc->m2m.ctx, ctx); | |
170 | ctx->state |= GSC_PARAMS; | |
171 | gsc->m2m.ctx = ctx; | |
172 | } | |
173 | ||
d9315160 | 174 | is_set = ctx->state & GSC_CTX_STOP_REQ; |
5d718338 | 175 | if (is_set) { |
d9315160 SAB |
176 | ctx->state &= ~GSC_CTX_STOP_REQ; |
177 | ctx->state |= GSC_CTX_ABORT; | |
5d718338 SK |
178 | wake_up(&gsc->irq_queue); |
179 | goto put_device; | |
180 | } | |
181 | ||
f60e160e | 182 | ret = gsc_get_bufs(ctx); |
5d718338 SK |
183 | if (ret) { |
184 | pr_err("Wrong address"); | |
185 | goto put_device; | |
186 | } | |
187 | ||
188 | gsc_set_prefbuf(gsc, &ctx->s_frame); | |
189 | gsc_hw_set_input_addr(gsc, &ctx->s_frame.addr, GSC_M2M_BUF_NUM); | |
190 | gsc_hw_set_output_addr(gsc, &ctx->d_frame.addr, GSC_M2M_BUF_NUM); | |
191 | ||
192 | if (ctx->state & GSC_PARAMS) { | |
193 | gsc_hw_set_input_buf_masking(gsc, GSC_M2M_BUF_NUM, false); | |
194 | gsc_hw_set_output_buf_masking(gsc, GSC_M2M_BUF_NUM, false); | |
195 | gsc_hw_set_frm_done_irq_mask(gsc, false); | |
196 | gsc_hw_set_gsc_irq_enable(gsc, true); | |
197 | ||
198 | if (gsc_set_scaler_info(ctx)) { | |
199 | pr_err("Scaler setup error"); | |
200 | goto put_device; | |
201 | } | |
202 | ||
203 | gsc_hw_set_input_path(ctx); | |
204 | gsc_hw_set_in_size(ctx); | |
205 | gsc_hw_set_in_image_format(ctx); | |
206 | ||
207 | gsc_hw_set_output_path(ctx); | |
208 | gsc_hw_set_out_size(ctx); | |
209 | gsc_hw_set_out_image_format(ctx); | |
210 | ||
211 | gsc_hw_set_prescaler(ctx); | |
212 | gsc_hw_set_mainscaler(ctx); | |
213 | gsc_hw_set_rotation(ctx); | |
214 | gsc_hw_set_global_alpha(ctx); | |
215 | } | |
216 | ||
217 | /* update shadow registers */ | |
218 | gsc_hw_set_sfr_update(ctx); | |
219 | ||
220 | ctx->state &= ~GSC_PARAMS; | |
221 | gsc_hw_enable_control(gsc, true); | |
222 | ||
223 | spin_unlock_irqrestore(&gsc->slock, flags); | |
224 | return; | |
225 | ||
226 | put_device: | |
227 | ctx->state &= ~GSC_PARAMS; | |
228 | spin_unlock_irqrestore(&gsc->slock, flags); | |
229 | } | |
230 | ||
231 | static int gsc_m2m_queue_setup(struct vb2_queue *vq, | |
5d718338 | 232 | unsigned int *num_buffers, unsigned int *num_planes, |
36c0f8b3 | 233 | unsigned int sizes[], struct device *alloc_devs[]) |
5d718338 SK |
234 | { |
235 | struct gsc_ctx *ctx = vb2_get_drv_priv(vq); | |
236 | struct gsc_frame *frame; | |
237 | int i; | |
238 | ||
239 | frame = ctx_get_frame(ctx, vq->type); | |
240 | if (IS_ERR(frame)) | |
241 | return PTR_ERR(frame); | |
242 | ||
243 | if (!frame->fmt) | |
244 | return -EINVAL; | |
245 | ||
246 | *num_planes = frame->fmt->num_planes; | |
c781e4a5 | 247 | for (i = 0; i < frame->fmt->num_planes; i++) |
5d718338 | 248 | sizes[i] = frame->payload[i]; |
5d718338 SK |
249 | return 0; |
250 | } | |
251 | ||
252 | static int gsc_m2m_buf_prepare(struct vb2_buffer *vb) | |
253 | { | |
254 | struct gsc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); | |
255 | struct gsc_frame *frame; | |
256 | int i; | |
257 | ||
258 | frame = ctx_get_frame(ctx, vb->vb2_queue->type); | |
259 | if (IS_ERR(frame)) | |
260 | return PTR_ERR(frame); | |
261 | ||
262 | if (!V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) { | |
263 | for (i = 0; i < frame->fmt->num_planes; i++) | |
264 | vb2_set_plane_payload(vb, i, frame->payload[i]); | |
265 | } | |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
270 | static void gsc_m2m_buf_queue(struct vb2_buffer *vb) | |
271 | { | |
2d700715 | 272 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
5d718338 SK |
273 | struct gsc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
274 | ||
275 | pr_debug("ctx: %p, ctx->state: 0x%x", ctx, ctx->state); | |
276 | ||
277 | if (ctx->m2m_ctx) | |
2d700715 | 278 | v4l2_m2m_buf_queue(ctx->m2m_ctx, vbuf); |
5d718338 SK |
279 | } |
280 | ||
b7b361f0 | 281 | static const struct vb2_ops gsc_m2m_qops = { |
5d718338 SK |
282 | .queue_setup = gsc_m2m_queue_setup, |
283 | .buf_prepare = gsc_m2m_buf_prepare, | |
284 | .buf_queue = gsc_m2m_buf_queue, | |
0637f054 PL |
285 | .wait_prepare = vb2_ops_wait_prepare, |
286 | .wait_finish = vb2_ops_wait_finish, | |
5d718338 SK |
287 | .stop_streaming = gsc_m2m_stop_streaming, |
288 | .start_streaming = gsc_m2m_start_streaming, | |
289 | }; | |
290 | ||
291 | static int gsc_m2m_querycap(struct file *file, void *fh, | |
292 | struct v4l2_capability *cap) | |
293 | { | |
294 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
295 | struct gsc_dev *gsc = ctx->gsc_dev; | |
296 | ||
a4a4b15c JMC |
297 | strlcpy(cap->driver, GSC_MODULE_NAME, sizeof(cap->driver)); |
298 | strlcpy(cap->card, GSC_MODULE_NAME " gscaler", sizeof(cap->card)); | |
3a5a2ac0 JMC |
299 | snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", |
300 | dev_name(&gsc->pdev->dev)); | |
5d718338 SK |
301 | cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE | |
302 | V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_VIDEO_OUTPUT_MPLANE; | |
303 | ||
304 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; | |
305 | return 0; | |
306 | } | |
307 | ||
308 | static int gsc_m2m_enum_fmt_mplane(struct file *file, void *priv, | |
309 | struct v4l2_fmtdesc *f) | |
310 | { | |
311 | return gsc_enum_fmt_mplane(f); | |
312 | } | |
313 | ||
314 | static int gsc_m2m_g_fmt_mplane(struct file *file, void *fh, | |
315 | struct v4l2_format *f) | |
316 | { | |
317 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
318 | ||
319 | return gsc_g_fmt_mplane(ctx, f); | |
320 | } | |
321 | ||
322 | static int gsc_m2m_try_fmt_mplane(struct file *file, void *fh, | |
323 | struct v4l2_format *f) | |
324 | { | |
325 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
326 | ||
327 | return gsc_try_fmt_mplane(ctx, f); | |
328 | } | |
329 | ||
330 | static int gsc_m2m_s_fmt_mplane(struct file *file, void *fh, | |
331 | struct v4l2_format *f) | |
332 | { | |
333 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
334 | struct vb2_queue *vq; | |
335 | struct gsc_frame *frame; | |
336 | struct v4l2_pix_format_mplane *pix; | |
337 | int i, ret = 0; | |
338 | ||
339 | ret = gsc_m2m_try_fmt_mplane(file, fh, f); | |
340 | if (ret) | |
341 | return ret; | |
342 | ||
343 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
344 | ||
345 | if (vb2_is_streaming(vq)) { | |
346 | pr_err("queue (%d) busy", f->type); | |
347 | return -EBUSY; | |
348 | } | |
349 | ||
350 | if (V4L2_TYPE_IS_OUTPUT(f->type)) | |
351 | frame = &ctx->s_frame; | |
352 | else | |
353 | frame = &ctx->d_frame; | |
354 | ||
355 | pix = &f->fmt.pix_mp; | |
356 | frame->fmt = find_fmt(&pix->pixelformat, NULL, 0); | |
357 | frame->colorspace = pix->colorspace; | |
358 | if (!frame->fmt) | |
359 | return -EINVAL; | |
360 | ||
361 | for (i = 0; i < frame->fmt->num_planes; i++) | |
362 | frame->payload[i] = pix->plane_fmt[i].sizeimage; | |
363 | ||
364 | gsc_set_frame_size(frame, pix->width, pix->height); | |
365 | ||
366 | if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) | |
367 | gsc_ctx_state_lock_set(GSC_PARAMS | GSC_DST_FMT, ctx); | |
368 | else | |
369 | gsc_ctx_state_lock_set(GSC_PARAMS | GSC_SRC_FMT, ctx); | |
370 | ||
371 | pr_debug("f_w: %d, f_h: %d", frame->f_width, frame->f_height); | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static int gsc_m2m_reqbufs(struct file *file, void *fh, | |
377 | struct v4l2_requestbuffers *reqbufs) | |
378 | { | |
379 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
380 | struct gsc_dev *gsc = ctx->gsc_dev; | |
5d718338 SK |
381 | u32 max_cnt; |
382 | ||
383 | max_cnt = (reqbufs->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) ? | |
384 | gsc->variant->in_buf_cnt : gsc->variant->out_buf_cnt; | |
daba4dfb | 385 | if (reqbufs->count > max_cnt) |
5d718338 | 386 | return -EINVAL; |
5d718338 | 387 | |
5d718338 SK |
388 | return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); |
389 | } | |
390 | ||
371a664e SAB |
391 | static int gsc_m2m_expbuf(struct file *file, void *fh, |
392 | struct v4l2_exportbuffer *eb) | |
393 | { | |
394 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
395 | return v4l2_m2m_expbuf(file, ctx->m2m_ctx, eb); | |
396 | } | |
397 | ||
5d718338 SK |
398 | static int gsc_m2m_querybuf(struct file *file, void *fh, |
399 | struct v4l2_buffer *buf) | |
400 | { | |
401 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
402 | return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); | |
403 | } | |
404 | ||
405 | static int gsc_m2m_qbuf(struct file *file, void *fh, | |
406 | struct v4l2_buffer *buf) | |
407 | { | |
408 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
409 | return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); | |
410 | } | |
411 | ||
412 | static int gsc_m2m_dqbuf(struct file *file, void *fh, | |
413 | struct v4l2_buffer *buf) | |
414 | { | |
415 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
416 | return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); | |
417 | } | |
418 | ||
419 | static int gsc_m2m_streamon(struct file *file, void *fh, | |
420 | enum v4l2_buf_type type) | |
421 | { | |
422 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
423 | ||
424 | /* The source and target color format need to be set */ | |
425 | if (V4L2_TYPE_IS_OUTPUT(type)) { | |
426 | if (!gsc_ctx_state_is_set(GSC_SRC_FMT, ctx)) | |
427 | return -EINVAL; | |
428 | } else if (!gsc_ctx_state_is_set(GSC_DST_FMT, ctx)) { | |
429 | return -EINVAL; | |
430 | } | |
431 | ||
432 | return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); | |
433 | } | |
434 | ||
435 | static int gsc_m2m_streamoff(struct file *file, void *fh, | |
436 | enum v4l2_buf_type type) | |
437 | { | |
438 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
439 | return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); | |
440 | } | |
441 | ||
442 | /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */ | |
443 | static int is_rectangle_enclosed(struct v4l2_rect *a, struct v4l2_rect *b) | |
444 | { | |
445 | if (a->left < b->left || a->top < b->top) | |
446 | return 0; | |
447 | ||
448 | if (a->left + a->width > b->left + b->width) | |
449 | return 0; | |
450 | ||
451 | if (a->top + a->height > b->top + b->height) | |
452 | return 0; | |
453 | ||
454 | return 1; | |
455 | } | |
456 | ||
457 | static int gsc_m2m_g_selection(struct file *file, void *fh, | |
458 | struct v4l2_selection *s) | |
459 | { | |
460 | struct gsc_frame *frame; | |
461 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
462 | ||
eaec420f HV |
463 | if ((s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) && |
464 | (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)) | |
5d718338 SK |
465 | return -EINVAL; |
466 | ||
467 | frame = ctx_get_frame(ctx, s->type); | |
468 | if (IS_ERR(frame)) | |
469 | return PTR_ERR(frame); | |
470 | ||
471 | switch (s->target) { | |
472 | case V4L2_SEL_TGT_COMPOSE_DEFAULT: | |
473 | case V4L2_SEL_TGT_COMPOSE_BOUNDS: | |
474 | case V4L2_SEL_TGT_CROP_BOUNDS: | |
475 | case V4L2_SEL_TGT_CROP_DEFAULT: | |
476 | s->r.left = 0; | |
477 | s->r.top = 0; | |
478 | s->r.width = frame->f_width; | |
479 | s->r.height = frame->f_height; | |
480 | return 0; | |
481 | ||
482 | case V4L2_SEL_TGT_COMPOSE: | |
483 | case V4L2_SEL_TGT_CROP: | |
484 | s->r.left = frame->crop.left; | |
485 | s->r.top = frame->crop.top; | |
486 | s->r.width = frame->crop.width; | |
487 | s->r.height = frame->crop.height; | |
488 | return 0; | |
489 | } | |
490 | ||
491 | return -EINVAL; | |
492 | } | |
493 | ||
494 | static int gsc_m2m_s_selection(struct file *file, void *fh, | |
495 | struct v4l2_selection *s) | |
496 | { | |
497 | struct gsc_frame *frame; | |
498 | struct gsc_ctx *ctx = fh_to_ctx(fh); | |
499 | struct v4l2_crop cr; | |
500 | struct gsc_variant *variant = ctx->gsc_dev->variant; | |
501 | int ret; | |
502 | ||
503 | cr.type = s->type; | |
504 | cr.c = s->r; | |
505 | ||
eaec420f HV |
506 | if ((s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) && |
507 | (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)) | |
5d718338 SK |
508 | return -EINVAL; |
509 | ||
510 | ret = gsc_try_crop(ctx, &cr); | |
511 | if (ret) | |
512 | return ret; | |
513 | ||
514 | if (s->flags & V4L2_SEL_FLAG_LE && | |
515 | !is_rectangle_enclosed(&cr.c, &s->r)) | |
516 | return -ERANGE; | |
517 | ||
518 | if (s->flags & V4L2_SEL_FLAG_GE && | |
519 | !is_rectangle_enclosed(&s->r, &cr.c)) | |
520 | return -ERANGE; | |
521 | ||
522 | s->r = cr.c; | |
523 | ||
524 | switch (s->target) { | |
525 | case V4L2_SEL_TGT_COMPOSE_BOUNDS: | |
526 | case V4L2_SEL_TGT_COMPOSE_DEFAULT: | |
527 | case V4L2_SEL_TGT_COMPOSE: | |
528 | frame = &ctx->s_frame; | |
529 | break; | |
530 | ||
531 | case V4L2_SEL_TGT_CROP_BOUNDS: | |
532 | case V4L2_SEL_TGT_CROP: | |
533 | case V4L2_SEL_TGT_CROP_DEFAULT: | |
534 | frame = &ctx->d_frame; | |
535 | break; | |
536 | ||
537 | default: | |
538 | return -EINVAL; | |
539 | } | |
540 | ||
541 | /* Check to see if scaling ratio is within supported range */ | |
542 | if (gsc_ctx_state_is_set(GSC_DST_FMT | GSC_SRC_FMT, ctx)) { | |
543 | if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { | |
544 | ret = gsc_check_scaler_ratio(variant, cr.c.width, | |
545 | cr.c.height, ctx->d_frame.crop.width, | |
546 | ctx->d_frame.crop.height, | |
547 | ctx->gsc_ctrls.rotate->val, ctx->out_path); | |
548 | } else { | |
549 | ret = gsc_check_scaler_ratio(variant, | |
550 | ctx->s_frame.crop.width, | |
551 | ctx->s_frame.crop.height, cr.c.width, | |
552 | cr.c.height, ctx->gsc_ctrls.rotate->val, | |
553 | ctx->out_path); | |
554 | } | |
555 | ||
556 | if (ret) { | |
557 | pr_err("Out of scaler range"); | |
558 | return -EINVAL; | |
559 | } | |
560 | } | |
561 | ||
562 | frame->crop = cr.c; | |
563 | ||
564 | gsc_ctx_state_lock_set(GSC_PARAMS, ctx); | |
565 | return 0; | |
566 | } | |
567 | ||
568 | static const struct v4l2_ioctl_ops gsc_m2m_ioctl_ops = { | |
569 | .vidioc_querycap = gsc_m2m_querycap, | |
570 | .vidioc_enum_fmt_vid_cap_mplane = gsc_m2m_enum_fmt_mplane, | |
571 | .vidioc_enum_fmt_vid_out_mplane = gsc_m2m_enum_fmt_mplane, | |
572 | .vidioc_g_fmt_vid_cap_mplane = gsc_m2m_g_fmt_mplane, | |
573 | .vidioc_g_fmt_vid_out_mplane = gsc_m2m_g_fmt_mplane, | |
574 | .vidioc_try_fmt_vid_cap_mplane = gsc_m2m_try_fmt_mplane, | |
575 | .vidioc_try_fmt_vid_out_mplane = gsc_m2m_try_fmt_mplane, | |
576 | .vidioc_s_fmt_vid_cap_mplane = gsc_m2m_s_fmt_mplane, | |
577 | .vidioc_s_fmt_vid_out_mplane = gsc_m2m_s_fmt_mplane, | |
578 | .vidioc_reqbufs = gsc_m2m_reqbufs, | |
371a664e | 579 | .vidioc_expbuf = gsc_m2m_expbuf, |
5d718338 SK |
580 | .vidioc_querybuf = gsc_m2m_querybuf, |
581 | .vidioc_qbuf = gsc_m2m_qbuf, | |
582 | .vidioc_dqbuf = gsc_m2m_dqbuf, | |
583 | .vidioc_streamon = gsc_m2m_streamon, | |
584 | .vidioc_streamoff = gsc_m2m_streamoff, | |
585 | .vidioc_g_selection = gsc_m2m_g_selection, | |
586 | .vidioc_s_selection = gsc_m2m_s_selection | |
587 | }; | |
588 | ||
589 | static int queue_init(void *priv, struct vb2_queue *src_vq, | |
590 | struct vb2_queue *dst_vq) | |
591 | { | |
592 | struct gsc_ctx *ctx = priv; | |
593 | int ret; | |
594 | ||
595 | memset(src_vq, 0, sizeof(*src_vq)); | |
596 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; | |
371a664e | 597 | src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; |
5d718338 SK |
598 | src_vq->drv_priv = ctx; |
599 | src_vq->ops = &gsc_m2m_qops; | |
600 | src_vq->mem_ops = &vb2_dma_contig_memops; | |
601 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
ade48681 | 602 | src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
0637f054 | 603 | src_vq->lock = &ctx->gsc_dev->lock; |
c781e4a5 | 604 | src_vq->dev = &ctx->gsc_dev->pdev->dev; |
5d718338 SK |
605 | |
606 | ret = vb2_queue_init(src_vq); | |
607 | if (ret) | |
608 | return ret; | |
609 | ||
610 | memset(dst_vq, 0, sizeof(*dst_vq)); | |
611 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; | |
371a664e | 612 | dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; |
5d718338 SK |
613 | dst_vq->drv_priv = ctx; |
614 | dst_vq->ops = &gsc_m2m_qops; | |
615 | dst_vq->mem_ops = &vb2_dma_contig_memops; | |
616 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
ade48681 | 617 | dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
0637f054 | 618 | dst_vq->lock = &ctx->gsc_dev->lock; |
c781e4a5 | 619 | dst_vq->dev = &ctx->gsc_dev->pdev->dev; |
5d718338 SK |
620 | |
621 | return vb2_queue_init(dst_vq); | |
622 | } | |
623 | ||
624 | static int gsc_m2m_open(struct file *file) | |
625 | { | |
626 | struct gsc_dev *gsc = video_drvdata(file); | |
627 | struct gsc_ctx *ctx = NULL; | |
628 | int ret; | |
629 | ||
630 | pr_debug("pid: %d, state: 0x%lx", task_pid_nr(current), gsc->state); | |
631 | ||
632 | if (mutex_lock_interruptible(&gsc->lock)) | |
633 | return -ERESTARTSYS; | |
634 | ||
2c8cc13f | 635 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
5d718338 SK |
636 | if (!ctx) { |
637 | ret = -ENOMEM; | |
638 | goto unlock; | |
639 | } | |
640 | ||
641 | v4l2_fh_init(&ctx->fh, gsc->m2m.vfd); | |
642 | ret = gsc_ctrls_create(ctx); | |
643 | if (ret) | |
644 | goto error_fh; | |
645 | ||
646 | /* Use separate control handler per file handle */ | |
647 | ctx->fh.ctrl_handler = &ctx->ctrl_handler; | |
648 | file->private_data = &ctx->fh; | |
649 | v4l2_fh_add(&ctx->fh); | |
650 | ||
651 | ctx->gsc_dev = gsc; | |
652 | /* Default color format */ | |
653 | ctx->s_frame.fmt = get_format(0); | |
654 | ctx->d_frame.fmt = get_format(0); | |
655 | /* Setup the device context for mem2mem mode. */ | |
656 | ctx->state = GSC_CTX_M2M; | |
657 | ctx->flags = 0; | |
658 | ctx->in_path = GSC_DMA; | |
659 | ctx->out_path = GSC_DMA; | |
660 | ||
661 | ctx->m2m_ctx = v4l2_m2m_ctx_init(gsc->m2m.m2m_dev, ctx, queue_init); | |
662 | if (IS_ERR(ctx->m2m_ctx)) { | |
663 | pr_err("Failed to initialize m2m context"); | |
664 | ret = PTR_ERR(ctx->m2m_ctx); | |
665 | goto error_ctrls; | |
666 | } | |
667 | ||
668 | if (gsc->m2m.refcnt++ == 0) | |
669 | set_bit(ST_M2M_OPEN, &gsc->state); | |
670 | ||
671 | pr_debug("gsc m2m driver is opened, ctx(0x%p)", ctx); | |
672 | ||
673 | mutex_unlock(&gsc->lock); | |
674 | return 0; | |
675 | ||
676 | error_ctrls: | |
677 | gsc_ctrls_delete(ctx); | |
5d718338 | 678 | v4l2_fh_del(&ctx->fh); |
3a07a827 | 679 | error_fh: |
5d718338 SK |
680 | v4l2_fh_exit(&ctx->fh); |
681 | kfree(ctx); | |
682 | unlock: | |
683 | mutex_unlock(&gsc->lock); | |
684 | return ret; | |
685 | } | |
686 | ||
687 | static int gsc_m2m_release(struct file *file) | |
688 | { | |
689 | struct gsc_ctx *ctx = fh_to_ctx(file->private_data); | |
690 | struct gsc_dev *gsc = ctx->gsc_dev; | |
691 | ||
692 | pr_debug("pid: %d, state: 0x%lx, refcnt= %d", | |
693 | task_pid_nr(current), gsc->state, gsc->m2m.refcnt); | |
694 | ||
98680180 | 695 | mutex_lock(&gsc->lock); |
5d718338 SK |
696 | |
697 | v4l2_m2m_ctx_release(ctx->m2m_ctx); | |
698 | gsc_ctrls_delete(ctx); | |
699 | v4l2_fh_del(&ctx->fh); | |
700 | v4l2_fh_exit(&ctx->fh); | |
701 | ||
702 | if (--gsc->m2m.refcnt <= 0) | |
703 | clear_bit(ST_M2M_OPEN, &gsc->state); | |
704 | kfree(ctx); | |
705 | ||
706 | mutex_unlock(&gsc->lock); | |
707 | return 0; | |
708 | } | |
709 | ||
710 | static unsigned int gsc_m2m_poll(struct file *file, | |
711 | struct poll_table_struct *wait) | |
712 | { | |
713 | struct gsc_ctx *ctx = fh_to_ctx(file->private_data); | |
714 | struct gsc_dev *gsc = ctx->gsc_dev; | |
d5441ea5 | 715 | unsigned int ret; |
5d718338 SK |
716 | |
717 | if (mutex_lock_interruptible(&gsc->lock)) | |
718 | return -ERESTARTSYS; | |
719 | ||
720 | ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait); | |
721 | mutex_unlock(&gsc->lock); | |
722 | ||
723 | return ret; | |
724 | } | |
725 | ||
726 | static int gsc_m2m_mmap(struct file *file, struct vm_area_struct *vma) | |
727 | { | |
728 | struct gsc_ctx *ctx = fh_to_ctx(file->private_data); | |
729 | struct gsc_dev *gsc = ctx->gsc_dev; | |
730 | int ret; | |
731 | ||
732 | if (mutex_lock_interruptible(&gsc->lock)) | |
733 | return -ERESTARTSYS; | |
734 | ||
735 | ret = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); | |
736 | mutex_unlock(&gsc->lock); | |
737 | ||
738 | return ret; | |
739 | } | |
740 | ||
741 | static const struct v4l2_file_operations gsc_m2m_fops = { | |
742 | .owner = THIS_MODULE, | |
743 | .open = gsc_m2m_open, | |
744 | .release = gsc_m2m_release, | |
745 | .poll = gsc_m2m_poll, | |
746 | .unlocked_ioctl = video_ioctl2, | |
747 | .mmap = gsc_m2m_mmap, | |
748 | }; | |
749 | ||
750 | static struct v4l2_m2m_ops gsc_m2m_ops = { | |
751 | .device_run = gsc_m2m_device_run, | |
752 | .job_abort = gsc_m2m_job_abort, | |
753 | }; | |
754 | ||
755 | int gsc_register_m2m_device(struct gsc_dev *gsc) | |
756 | { | |
757 | struct platform_device *pdev; | |
758 | int ret; | |
759 | ||
760 | if (!gsc) | |
761 | return -ENODEV; | |
762 | ||
763 | pdev = gsc->pdev; | |
764 | ||
765 | gsc->vdev.fops = &gsc_m2m_fops; | |
766 | gsc->vdev.ioctl_ops = &gsc_m2m_ioctl_ops; | |
767 | gsc->vdev.release = video_device_release_empty; | |
768 | gsc->vdev.lock = &gsc->lock; | |
24fc681a | 769 | gsc->vdev.vfl_dir = VFL_DIR_M2M; |
d0b1c313 | 770 | gsc->vdev.v4l2_dev = &gsc->v4l2_dev; |
5d718338 SK |
771 | snprintf(gsc->vdev.name, sizeof(gsc->vdev.name), "%s.%d:m2m", |
772 | GSC_MODULE_NAME, gsc->id); | |
773 | ||
774 | video_set_drvdata(&gsc->vdev, gsc); | |
775 | ||
776 | gsc->m2m.vfd = &gsc->vdev; | |
777 | gsc->m2m.m2m_dev = v4l2_m2m_init(&gsc_m2m_ops); | |
778 | if (IS_ERR(gsc->m2m.m2m_dev)) { | |
779 | dev_err(&pdev->dev, "failed to initialize v4l2-m2m device\n"); | |
f4ca5030 | 780 | return PTR_ERR(gsc->m2m.m2m_dev); |
5d718338 SK |
781 | } |
782 | ||
783 | ret = video_register_device(&gsc->vdev, VFL_TYPE_GRABBER, -1); | |
784 | if (ret) { | |
785 | dev_err(&pdev->dev, | |
786 | "%s(): failed to register video device\n", __func__); | |
f4ca5030 | 787 | goto err_m2m_release; |
5d718338 SK |
788 | } |
789 | ||
790 | pr_debug("gsc m2m driver registered as /dev/video%d", gsc->vdev.num); | |
791 | return 0; | |
792 | ||
f4ca5030 | 793 | err_m2m_release: |
5d718338 | 794 | v4l2_m2m_release(gsc->m2m.m2m_dev); |
5d718338 SK |
795 | |
796 | return ret; | |
797 | } | |
798 | ||
799 | void gsc_unregister_m2m_device(struct gsc_dev *gsc) | |
800 | { | |
115a16ba | 801 | if (gsc) { |
5d718338 | 802 | v4l2_m2m_release(gsc->m2m.m2m_dev); |
115a16ba JMC |
803 | video_unregister_device(&gsc->vdev); |
804 | } | |
5d718338 | 805 | } |