1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
4 * Author: Jacob Chen <jacob-chen@iotwrt.com>
5 */
6
7 #include <linux/clk.h>
8 #include <linux/debugfs.h>
9 #include <linux/delay.h>
10 #include <linux/fs.h>
11 #include <linux/interrupt.h>
12 #include <linux/module.h>
13 #include <linux/of.h>
14 #include <linux/pm_runtime.h>
15 #include <linux/reset.h>
16 #include <linux/sched.h>
17 #include <linux/slab.h>
18 #include <linux/timer.h>
19
20 #include <linux/platform_device.h>
21 #include <media/v4l2-device.h>
22 #include <media/v4l2-event.h>
23 #include <media/v4l2-ioctl.h>
24 #include <media/v4l2-mem2mem.h>
25 #include <media/videobuf2-dma-sg.h>
26 #include <media/videobuf2-v4l2.h>
27
28 #include "rga-hw.h"
29 #include "rga.h"
30
31 static int debug;
32 module_param(debug, int, 0644);
33
device_run(void * prv)34 static void device_run(void *prv)
35 {
36 struct rga_ctx *ctx = prv;
37 struct rockchip_rga *rga = ctx->rga;
38 struct vb2_v4l2_buffer *src, *dst;
39 unsigned long flags;
40
41 spin_lock_irqsave(&rga->ctrl_lock, flags);
42
43 rga->curr = ctx;
44
45 src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
46 dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
47
48 rga_buf_map(&src->vb2_buf);
49 rga_buf_map(&dst->vb2_buf);
50
51 rga_hw_start(rga);
52
53 spin_unlock_irqrestore(&rga->ctrl_lock, flags);
54 }
55
rga_isr(int irq,void * prv)56 static irqreturn_t rga_isr(int irq, void *prv)
57 {
58 struct rockchip_rga *rga = prv;
59 int intr;
60
61 intr = rga_read(rga, RGA_INT) & 0xf;
62
63 rga_mod(rga, RGA_INT, intr << 4, 0xf << 4);
64
65 if (intr & 0x04) {
66 struct vb2_v4l2_buffer *src, *dst;
67 struct rga_ctx *ctx = rga->curr;
68
69 WARN_ON(!ctx);
70
71 rga->curr = NULL;
72
73 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
74 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
75
76 WARN_ON(!src);
77 WARN_ON(!dst);
78
79 dst->timecode = src->timecode;
80 dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
81 dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
82 dst->flags |= src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
83
84 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
85 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
86 v4l2_m2m_job_finish(rga->m2m_dev, ctx->fh.m2m_ctx);
87 }
88
89 return IRQ_HANDLED;
90 }
91
92 static const struct v4l2_m2m_ops rga_m2m_ops = {
93 .device_run = device_run,
94 };
95
96 static int
queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)97 queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
98 {
99 struct rga_ctx *ctx = priv;
100 int ret;
101
102 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
103 src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
104 src_vq->drv_priv = ctx;
105 src_vq->ops = &rga_qops;
106 src_vq->mem_ops = &vb2_dma_sg_memops;
107 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
108 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
109 src_vq->lock = &ctx->rga->mutex;
110 src_vq->dev = ctx->rga->v4l2_dev.dev;
111
112 ret = vb2_queue_init(src_vq);
113 if (ret)
114 return ret;
115
116 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
117 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
118 dst_vq->drv_priv = ctx;
119 dst_vq->ops = &rga_qops;
120 dst_vq->mem_ops = &vb2_dma_sg_memops;
121 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
122 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
123 dst_vq->lock = &ctx->rga->mutex;
124 dst_vq->dev = ctx->rga->v4l2_dev.dev;
125
126 return vb2_queue_init(dst_vq);
127 }
128
rga_s_ctrl(struct v4l2_ctrl * ctrl)129 static int rga_s_ctrl(struct v4l2_ctrl *ctrl)
130 {
131 struct rga_ctx *ctx = container_of(ctrl->handler, struct rga_ctx,
132 ctrl_handler);
133 unsigned long flags;
134
135 spin_lock_irqsave(&ctx->rga->ctrl_lock, flags);
136 switch (ctrl->id) {
137 case V4L2_CID_HFLIP:
138 ctx->hflip = ctrl->val;
139 break;
140 case V4L2_CID_VFLIP:
141 ctx->vflip = ctrl->val;
142 break;
143 case V4L2_CID_ROTATE:
144 ctx->rotate = ctrl->val;
145 break;
146 case V4L2_CID_BG_COLOR:
147 ctx->fill_color = ctrl->val;
148 break;
149 }
150 spin_unlock_irqrestore(&ctx->rga->ctrl_lock, flags);
151 return 0;
152 }
153
154 static const struct v4l2_ctrl_ops rga_ctrl_ops = {
155 .s_ctrl = rga_s_ctrl,
156 };
157
rga_setup_ctrls(struct rga_ctx * ctx)158 static int rga_setup_ctrls(struct rga_ctx *ctx)
159 {
160 struct rockchip_rga *rga = ctx->rga;
161
162 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 4);
163
164 v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
165 V4L2_CID_HFLIP, 0, 1, 1, 0);
166
167 v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
168 V4L2_CID_VFLIP, 0, 1, 1, 0);
169
170 v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
171 V4L2_CID_ROTATE, 0, 270, 90, 0);
172
173 v4l2_ctrl_new_std(&ctx->ctrl_handler, &rga_ctrl_ops,
174 V4L2_CID_BG_COLOR, 0, 0xffffffff, 1, 0);
175
176 if (ctx->ctrl_handler.error) {
177 int err = ctx->ctrl_handler.error;
178
179 v4l2_err(&rga->v4l2_dev, "%s failed\n", __func__);
180 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
181 return err;
182 }
183
184 return 0;
185 }
186
187 static struct rga_fmt formats[] = {
188 {
189 .fourcc = V4L2_PIX_FMT_ARGB32,
190 .color_swap = RGA_COLOR_RB_SWAP,
191 .hw_format = RGA_COLOR_FMT_ABGR8888,
192 .depth = 32,
193 .uv_factor = 1,
194 .y_div = 1,
195 .x_div = 1,
196 },
197 {
198 .fourcc = V4L2_PIX_FMT_XRGB32,
199 .color_swap = RGA_COLOR_RB_SWAP,
200 .hw_format = RGA_COLOR_FMT_XBGR8888,
201 .depth = 32,
202 .uv_factor = 1,
203 .y_div = 1,
204 .x_div = 1,
205 },
206 {
207 .fourcc = V4L2_PIX_FMT_ABGR32,
208 .color_swap = RGA_COLOR_ALPHA_SWAP,
209 .hw_format = RGA_COLOR_FMT_ABGR8888,
210 .depth = 32,
211 .uv_factor = 1,
212 .y_div = 1,
213 .x_div = 1,
214 },
215 {
216 .fourcc = V4L2_PIX_FMT_XBGR32,
217 .color_swap = RGA_COLOR_ALPHA_SWAP,
218 .hw_format = RGA_COLOR_FMT_XBGR8888,
219 .depth = 32,
220 .uv_factor = 1,
221 .y_div = 1,
222 .x_div = 1,
223 },
224 {
225 .fourcc = V4L2_PIX_FMT_RGB24,
226 .color_swap = RGA_COLOR_NONE_SWAP,
227 .hw_format = RGA_COLOR_FMT_RGB888,
228 .depth = 24,
229 .uv_factor = 1,
230 .y_div = 1,
231 .x_div = 1,
232 },
233 {
234 .fourcc = V4L2_PIX_FMT_BGR24,
235 .color_swap = RGA_COLOR_RB_SWAP,
236 .hw_format = RGA_COLOR_FMT_RGB888,
237 .depth = 24,
238 .uv_factor = 1,
239 .y_div = 1,
240 .x_div = 1,
241 },
242 {
243 .fourcc = V4L2_PIX_FMT_ARGB444,
244 .color_swap = RGA_COLOR_RB_SWAP,
245 .hw_format = RGA_COLOR_FMT_ABGR4444,
246 .depth = 16,
247 .uv_factor = 1,
248 .y_div = 1,
249 .x_div = 1,
250 },
251 {
252 .fourcc = V4L2_PIX_FMT_ARGB555,
253 .color_swap = RGA_COLOR_RB_SWAP,
254 .hw_format = RGA_COLOR_FMT_ABGR1555,
255 .depth = 16,
256 .uv_factor = 1,
257 .y_div = 1,
258 .x_div = 1,
259 },
260 {
261 .fourcc = V4L2_PIX_FMT_RGB565,
262 .color_swap = RGA_COLOR_RB_SWAP,
263 .hw_format = RGA_COLOR_FMT_BGR565,
264 .depth = 16,
265 .uv_factor = 1,
266 .y_div = 1,
267 .x_div = 1,
268 },
269 {
270 .fourcc = V4L2_PIX_FMT_NV21,
271 .color_swap = RGA_COLOR_UV_SWAP,
272 .hw_format = RGA_COLOR_FMT_YUV420SP,
273 .depth = 12,
274 .uv_factor = 4,
275 .y_div = 2,
276 .x_div = 1,
277 },
278 {
279 .fourcc = V4L2_PIX_FMT_NV61,
280 .color_swap = RGA_COLOR_UV_SWAP,
281 .hw_format = RGA_COLOR_FMT_YUV422SP,
282 .depth = 16,
283 .uv_factor = 2,
284 .y_div = 1,
285 .x_div = 1,
286 },
287 {
288 .fourcc = V4L2_PIX_FMT_NV12,
289 .color_swap = RGA_COLOR_NONE_SWAP,
290 .hw_format = RGA_COLOR_FMT_YUV420SP,
291 .depth = 12,
292 .uv_factor = 4,
293 .y_div = 2,
294 .x_div = 1,
295 },
296 {
297 .fourcc = V4L2_PIX_FMT_NV16,
298 .color_swap = RGA_COLOR_NONE_SWAP,
299 .hw_format = RGA_COLOR_FMT_YUV422SP,
300 .depth = 16,
301 .uv_factor = 2,
302 .y_div = 1,
303 .x_div = 1,
304 },
305 {
306 .fourcc = V4L2_PIX_FMT_YUV420,
307 .color_swap = RGA_COLOR_NONE_SWAP,
308 .hw_format = RGA_COLOR_FMT_YUV420P,
309 .depth = 12,
310 .uv_factor = 4,
311 .y_div = 2,
312 .x_div = 2,
313 },
314 {
315 .fourcc = V4L2_PIX_FMT_YUV422P,
316 .color_swap = RGA_COLOR_NONE_SWAP,
317 .hw_format = RGA_COLOR_FMT_YUV422P,
318 .depth = 16,
319 .uv_factor = 2,
320 .y_div = 1,
321 .x_div = 2,
322 },
323 {
324 .fourcc = V4L2_PIX_FMT_YVU420,
325 .color_swap = RGA_COLOR_UV_SWAP,
326 .hw_format = RGA_COLOR_FMT_YUV420P,
327 .depth = 12,
328 .uv_factor = 4,
329 .y_div = 2,
330 .x_div = 2,
331 },
332 };
333
334 #define NUM_FORMATS ARRAY_SIZE(formats)
335
rga_fmt_find(struct v4l2_format * f)336 static struct rga_fmt *rga_fmt_find(struct v4l2_format *f)
337 {
338 unsigned int i;
339
340 for (i = 0; i < NUM_FORMATS; i++) {
341 if (formats[i].fourcc == f->fmt.pix.pixelformat)
342 return &formats[i];
343 }
344 return NULL;
345 }
346
347 static struct rga_frame def_frame = {
348 .width = DEFAULT_WIDTH,
349 .height = DEFAULT_HEIGHT,
350 .colorspace = V4L2_COLORSPACE_DEFAULT,
351 .crop.left = 0,
352 .crop.top = 0,
353 .crop.width = DEFAULT_WIDTH,
354 .crop.height = DEFAULT_HEIGHT,
355 .fmt = &formats[0],
356 };
357
rga_get_frame(struct rga_ctx * ctx,enum v4l2_buf_type type)358 struct rga_frame *rga_get_frame(struct rga_ctx *ctx, enum v4l2_buf_type type)
359 {
360 switch (type) {
361 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
362 return &ctx->in;
363 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
364 return &ctx->out;
365 default:
366 return ERR_PTR(-EINVAL);
367 }
368 }
369
rga_open(struct file * file)370 static int rga_open(struct file *file)
371 {
372 struct rockchip_rga *rga = video_drvdata(file);
373 struct rga_ctx *ctx = NULL;
374 int ret = 0;
375
376 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
377 if (!ctx)
378 return -ENOMEM;
379 ctx->rga = rga;
380 /* Set default formats */
381 ctx->in = def_frame;
382 ctx->out = def_frame;
383
384 if (mutex_lock_interruptible(&rga->mutex)) {
385 kfree(ctx);
386 return -ERESTARTSYS;
387 }
388 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(rga->m2m_dev, ctx, &queue_init);
389 if (IS_ERR(ctx->fh.m2m_ctx)) {
390 ret = PTR_ERR(ctx->fh.m2m_ctx);
391 mutex_unlock(&rga->mutex);
392 kfree(ctx);
393 return ret;
394 }
395 v4l2_fh_init(&ctx->fh, video_devdata(file));
396 file->private_data = &ctx->fh;
397 v4l2_fh_add(&ctx->fh);
398
399 rga_setup_ctrls(ctx);
400
401 /* Write the default values to the ctx struct */
402 v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
403
404 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
405 mutex_unlock(&rga->mutex);
406
407 return 0;
408 }
409
rga_release(struct file * file)410 static int rga_release(struct file *file)
411 {
412 struct rga_ctx *ctx =
413 container_of(file->private_data, struct rga_ctx, fh);
414 struct rockchip_rga *rga = ctx->rga;
415
416 mutex_lock(&rga->mutex);
417
418 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
419
420 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
421 v4l2_fh_del(&ctx->fh);
422 v4l2_fh_exit(&ctx->fh);
423 kfree(ctx);
424
425 mutex_unlock(&rga->mutex);
426
427 return 0;
428 }
429
430 static const struct v4l2_file_operations rga_fops = {
431 .owner = THIS_MODULE,
432 .open = rga_open,
433 .release = rga_release,
434 .poll = v4l2_m2m_fop_poll,
435 .unlocked_ioctl = video_ioctl2,
436 .mmap = v4l2_m2m_fop_mmap,
437 };
438
439 static int
vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * cap)440 vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap)
441 {
442 strscpy(cap->driver, RGA_NAME, sizeof(cap->driver));
443 strscpy(cap->card, "rockchip-rga", sizeof(cap->card));
444 strscpy(cap->bus_info, "platform:rga", sizeof(cap->bus_info));
445
446 return 0;
447 }
448
vidioc_enum_fmt(struct file * file,void * prv,struct v4l2_fmtdesc * f)449 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
450 {
451 struct rga_fmt *fmt;
452
453 if (f->index >= NUM_FORMATS)
454 return -EINVAL;
455
456 fmt = &formats[f->index];
457 f->pixelformat = fmt->fourcc;
458
459 return 0;
460 }
461
vidioc_g_fmt(struct file * file,void * prv,struct v4l2_format * f)462 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
463 {
464 struct rga_ctx *ctx = prv;
465 struct vb2_queue *vq;
466 struct rga_frame *frm;
467
468 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
469 if (!vq)
470 return -EINVAL;
471 frm = rga_get_frame(ctx, f->type);
472 if (IS_ERR(frm))
473 return PTR_ERR(frm);
474
475 f->fmt.pix.width = frm->width;
476 f->fmt.pix.height = frm->height;
477 f->fmt.pix.field = V4L2_FIELD_NONE;
478 f->fmt.pix.pixelformat = frm->fmt->fourcc;
479 f->fmt.pix.bytesperline = frm->stride;
480 f->fmt.pix.sizeimage = frm->size;
481 f->fmt.pix.colorspace = frm->colorspace;
482
483 return 0;
484 }
485
vidioc_try_fmt(struct file * file,void * prv,struct v4l2_format * f)486 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
487 {
488 struct rga_fmt *fmt;
489
490 fmt = rga_fmt_find(f);
491 if (!fmt) {
492 fmt = &formats[0];
493 f->fmt.pix.pixelformat = fmt->fourcc;
494 }
495
496 f->fmt.pix.field = V4L2_FIELD_NONE;
497
498 if (f->fmt.pix.width > MAX_WIDTH)
499 f->fmt.pix.width = MAX_WIDTH;
500 if (f->fmt.pix.height > MAX_HEIGHT)
501 f->fmt.pix.height = MAX_HEIGHT;
502
503 if (f->fmt.pix.width < MIN_WIDTH)
504 f->fmt.pix.width = MIN_WIDTH;
505 if (f->fmt.pix.height < MIN_HEIGHT)
506 f->fmt.pix.height = MIN_HEIGHT;
507
508 if (fmt->hw_format >= RGA_COLOR_FMT_YUV422SP)
509 f->fmt.pix.bytesperline = f->fmt.pix.width;
510 else
511 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
512
513 f->fmt.pix.sizeimage =
514 f->fmt.pix.height * (f->fmt.pix.width * fmt->depth) >> 3;
515
516 return 0;
517 }
518
vidioc_s_fmt(struct file * file,void * prv,struct v4l2_format * f)519 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
520 {
521 struct rga_ctx *ctx = prv;
522 struct rockchip_rga *rga = ctx->rga;
523 struct vb2_queue *vq;
524 struct rga_frame *frm;
525 struct rga_fmt *fmt;
526 int ret = 0;
527
528 /* Adjust all values accordingly to the hardware capabilities
529 * and chosen format.
530 */
531 ret = vidioc_try_fmt(file, prv, f);
532 if (ret)
533 return ret;
534 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
535 if (vb2_is_busy(vq)) {
536 v4l2_err(&rga->v4l2_dev, "queue (%d) bust\n", f->type);
537 return -EBUSY;
538 }
539 frm = rga_get_frame(ctx, f->type);
540 if (IS_ERR(frm))
541 return PTR_ERR(frm);
542 fmt = rga_fmt_find(f);
543 if (!fmt)
544 return -EINVAL;
545 frm->width = f->fmt.pix.width;
546 frm->height = f->fmt.pix.height;
547 frm->size = f->fmt.pix.sizeimage;
548 frm->fmt = fmt;
549 frm->stride = f->fmt.pix.bytesperline;
550 frm->colorspace = f->fmt.pix.colorspace;
551
552 /* Reset crop settings */
553 frm->crop.left = 0;
554 frm->crop.top = 0;
555 frm->crop.width = frm->width;
556 frm->crop.height = frm->height;
557
558 return 0;
559 }
560
vidioc_g_selection(struct file * file,void * prv,struct v4l2_selection * s)561 static int vidioc_g_selection(struct file *file, void *prv,
562 struct v4l2_selection *s)
563 {
564 struct rga_ctx *ctx = prv;
565 struct rga_frame *f;
566 bool use_frame = false;
567
568 f = rga_get_frame(ctx, s->type);
569 if (IS_ERR(f))
570 return PTR_ERR(f);
571
572 switch (s->target) {
573 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
574 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
575 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
576 return -EINVAL;
577 break;
578 case V4L2_SEL_TGT_CROP_DEFAULT:
579 case V4L2_SEL_TGT_CROP_BOUNDS:
580 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
581 return -EINVAL;
582 break;
583 case V4L2_SEL_TGT_COMPOSE:
584 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
585 return -EINVAL;
586 use_frame = true;
587 break;
588 case V4L2_SEL_TGT_CROP:
589 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
590 return -EINVAL;
591 use_frame = true;
592 break;
593 default:
594 return -EINVAL;
595 }
596
597 if (use_frame) {
598 s->r = f->crop;
599 } else {
600 s->r.left = 0;
601 s->r.top = 0;
602 s->r.width = f->width;
603 s->r.height = f->height;
604 }
605
606 return 0;
607 }
608
vidioc_s_selection(struct file * file,void * prv,struct v4l2_selection * s)609 static int vidioc_s_selection(struct file *file, void *prv,
610 struct v4l2_selection *s)
611 {
612 struct rga_ctx *ctx = prv;
613 struct rockchip_rga *rga = ctx->rga;
614 struct rga_frame *f;
615 int ret = 0;
616
617 f = rga_get_frame(ctx, s->type);
618 if (IS_ERR(f))
619 return PTR_ERR(f);
620
621 switch (s->target) {
622 case V4L2_SEL_TGT_COMPOSE:
623 /*
624 * COMPOSE target is only valid for capture buffer type, return
625 * error for output buffer type
626 */
627 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
628 return -EINVAL;
629 break;
630 case V4L2_SEL_TGT_CROP:
631 /*
632 * CROP target is only valid for output buffer type, return
633 * error for capture buffer type
634 */
635 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
636 return -EINVAL;
637 break;
638 /*
639 * bound and default crop/compose targets are invalid targets to
640 * try/set
641 */
642 default:
643 return -EINVAL;
644 }
645
646 if (s->r.top < 0 || s->r.left < 0) {
647 v4l2_dbg(debug, 1, &rga->v4l2_dev,
648 "doesn't support negative values for top & left.\n");
649 return -EINVAL;
650 }
651
652 if (s->r.left + s->r.width > f->width ||
653 s->r.top + s->r.height > f->height ||
654 s->r.width < MIN_WIDTH || s->r.height < MIN_HEIGHT) {
655 v4l2_dbg(debug, 1, &rga->v4l2_dev, "unsupported crop value.\n");
656 return -EINVAL;
657 }
658
659 f->crop = s->r;
660
661 return ret;
662 }
663
664 static const struct v4l2_ioctl_ops rga_ioctl_ops = {
665 .vidioc_querycap = vidioc_querycap,
666
667 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
668 .vidioc_g_fmt_vid_cap = vidioc_g_fmt,
669 .vidioc_try_fmt_vid_cap = vidioc_try_fmt,
670 .vidioc_s_fmt_vid_cap = vidioc_s_fmt,
671
672 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
673 .vidioc_g_fmt_vid_out = vidioc_g_fmt,
674 .vidioc_try_fmt_vid_out = vidioc_try_fmt,
675 .vidioc_s_fmt_vid_out = vidioc_s_fmt,
676
677 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
678 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
679 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
680 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
681 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
682 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
683 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
684
685 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
686 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
687
688 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
689 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
690
691 .vidioc_g_selection = vidioc_g_selection,
692 .vidioc_s_selection = vidioc_s_selection,
693 };
694
695 static const struct video_device rga_videodev = {
696 .name = "rockchip-rga",
697 .fops = &rga_fops,
698 .ioctl_ops = &rga_ioctl_ops,
699 .minor = -1,
700 .release = video_device_release,
701 .vfl_dir = VFL_DIR_M2M,
702 .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
703 };
704
rga_enable_clocks(struct rockchip_rga * rga)705 static int rga_enable_clocks(struct rockchip_rga *rga)
706 {
707 int ret;
708
709 ret = clk_prepare_enable(rga->sclk);
710 if (ret) {
711 dev_err(rga->dev, "Cannot enable rga sclk: %d\n", ret);
712 return ret;
713 }
714
715 ret = clk_prepare_enable(rga->aclk);
716 if (ret) {
717 dev_err(rga->dev, "Cannot enable rga aclk: %d\n", ret);
718 goto err_disable_sclk;
719 }
720
721 ret = clk_prepare_enable(rga->hclk);
722 if (ret) {
723 dev_err(rga->dev, "Cannot enable rga hclk: %d\n", ret);
724 goto err_disable_aclk;
725 }
726
727 return 0;
728
729 err_disable_sclk:
730 clk_disable_unprepare(rga->sclk);
731 err_disable_aclk:
732 clk_disable_unprepare(rga->aclk);
733
734 return ret;
735 }
736
rga_disable_clocks(struct rockchip_rga * rga)737 static void rga_disable_clocks(struct rockchip_rga *rga)
738 {
739 clk_disable_unprepare(rga->sclk);
740 clk_disable_unprepare(rga->hclk);
741 clk_disable_unprepare(rga->aclk);
742 }
743
rga_parse_dt(struct rockchip_rga * rga)744 static int rga_parse_dt(struct rockchip_rga *rga)
745 {
746 struct reset_control *core_rst, *axi_rst, *ahb_rst;
747
748 core_rst = devm_reset_control_get(rga->dev, "core");
749 if (IS_ERR(core_rst)) {
750 dev_err(rga->dev, "failed to get core reset controller\n");
751 return PTR_ERR(core_rst);
752 }
753
754 axi_rst = devm_reset_control_get(rga->dev, "axi");
755 if (IS_ERR(axi_rst)) {
756 dev_err(rga->dev, "failed to get axi reset controller\n");
757 return PTR_ERR(axi_rst);
758 }
759
760 ahb_rst = devm_reset_control_get(rga->dev, "ahb");
761 if (IS_ERR(ahb_rst)) {
762 dev_err(rga->dev, "failed to get ahb reset controller\n");
763 return PTR_ERR(ahb_rst);
764 }
765
766 reset_control_assert(core_rst);
767 udelay(1);
768 reset_control_deassert(core_rst);
769
770 reset_control_assert(axi_rst);
771 udelay(1);
772 reset_control_deassert(axi_rst);
773
774 reset_control_assert(ahb_rst);
775 udelay(1);
776 reset_control_deassert(ahb_rst);
777
778 rga->sclk = devm_clk_get(rga->dev, "sclk");
779 if (IS_ERR(rga->sclk)) {
780 dev_err(rga->dev, "failed to get sclk clock\n");
781 return PTR_ERR(rga->sclk);
782 }
783
784 rga->aclk = devm_clk_get(rga->dev, "aclk");
785 if (IS_ERR(rga->aclk)) {
786 dev_err(rga->dev, "failed to get aclk clock\n");
787 return PTR_ERR(rga->aclk);
788 }
789
790 rga->hclk = devm_clk_get(rga->dev, "hclk");
791 if (IS_ERR(rga->hclk)) {
792 dev_err(rga->dev, "failed to get hclk clock\n");
793 return PTR_ERR(rga->hclk);
794 }
795
796 return 0;
797 }
798
rga_probe(struct platform_device * pdev)799 static int rga_probe(struct platform_device *pdev)
800 {
801 struct rockchip_rga *rga;
802 struct video_device *vfd;
803 struct resource *res;
804 int ret = 0;
805 int irq;
806
807 if (!pdev->dev.of_node)
808 return -ENODEV;
809
810 rga = devm_kzalloc(&pdev->dev, sizeof(*rga), GFP_KERNEL);
811 if (!rga)
812 return -ENOMEM;
813
814 rga->dev = &pdev->dev;
815 spin_lock_init(&rga->ctrl_lock);
816 mutex_init(&rga->mutex);
817
818 ret = rga_parse_dt(rga);
819 if (ret)
820 dev_err(&pdev->dev, "Unable to parse OF data\n");
821
822 pm_runtime_enable(rga->dev);
823
824 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
825
826 rga->regs = devm_ioremap_resource(rga->dev, res);
827 if (IS_ERR(rga->regs)) {
828 ret = PTR_ERR(rga->regs);
829 goto err_put_clk;
830 }
831
832 irq = platform_get_irq(pdev, 0);
833 if (irq < 0) {
834 ret = irq;
835 goto err_put_clk;
836 }
837
838 ret = devm_request_irq(rga->dev, irq, rga_isr, 0,
839 dev_name(rga->dev), rga);
840 if (ret < 0) {
841 dev_err(rga->dev, "failed to request irq\n");
842 goto err_put_clk;
843 }
844
845 ret = v4l2_device_register(&pdev->dev, &rga->v4l2_dev);
846 if (ret)
847 goto err_put_clk;
848 vfd = video_device_alloc();
849 if (!vfd) {
850 v4l2_err(&rga->v4l2_dev, "Failed to allocate video device\n");
851 ret = -ENOMEM;
852 goto unreg_v4l2_dev;
853 }
854 *vfd = rga_videodev;
855 vfd->lock = &rga->mutex;
856 vfd->v4l2_dev = &rga->v4l2_dev;
857
858 video_set_drvdata(vfd, rga);
859 rga->vfd = vfd;
860
861 platform_set_drvdata(pdev, rga);
862 rga->m2m_dev = v4l2_m2m_init(&rga_m2m_ops);
863 if (IS_ERR(rga->m2m_dev)) {
864 v4l2_err(&rga->v4l2_dev, "Failed to init mem2mem device\n");
865 ret = PTR_ERR(rga->m2m_dev);
866 goto rel_vdev;
867 }
868
869 ret = pm_runtime_resume_and_get(rga->dev);
870 if (ret < 0)
871 goto rel_vdev;
872
873 rga->version.major = (rga_read(rga, RGA_VERSION_INFO) >> 24) & 0xFF;
874 rga->version.minor = (rga_read(rga, RGA_VERSION_INFO) >> 20) & 0x0F;
875
876 v4l2_info(&rga->v4l2_dev, "HW Version: 0x%02x.%02x\n",
877 rga->version.major, rga->version.minor);
878
879 pm_runtime_put(rga->dev);
880
881 /* Create CMD buffer */
882 rga->cmdbuf_virt = dma_alloc_attrs(rga->dev, RGA_CMDBUF_SIZE,
883 &rga->cmdbuf_phy, GFP_KERNEL,
884 DMA_ATTR_WRITE_COMBINE);
885 if (!rga->cmdbuf_virt) {
886 ret = -ENOMEM;
887 goto rel_vdev;
888 }
889
890 rga->src_mmu_pages =
891 (unsigned int *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 3);
892 if (!rga->src_mmu_pages) {
893 ret = -ENOMEM;
894 goto free_dma;
895 }
896 rga->dst_mmu_pages =
897 (unsigned int *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 3);
898 if (rga->dst_mmu_pages) {
899 ret = -ENOMEM;
900 goto free_src_pages;
901 }
902
903 def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
904 def_frame.size = def_frame.stride * def_frame.height;
905
906 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
907 if (ret) {
908 v4l2_err(&rga->v4l2_dev, "Failed to register video device\n");
909 goto free_dst_pages;
910 }
911
912 v4l2_info(&rga->v4l2_dev, "Registered %s as /dev/%s\n",
913 vfd->name, video_device_node_name(vfd));
914
915 return 0;
916
917 free_dst_pages:
918 free_pages((unsigned long)rga->dst_mmu_pages, 3);
919 free_src_pages:
920 free_pages((unsigned long)rga->src_mmu_pages, 3);
921 free_dma:
922 dma_free_attrs(rga->dev, RGA_CMDBUF_SIZE, rga->cmdbuf_virt,
923 rga->cmdbuf_phy, DMA_ATTR_WRITE_COMBINE);
924 rel_vdev:
925 video_device_release(vfd);
926 unreg_v4l2_dev:
927 v4l2_device_unregister(&rga->v4l2_dev);
928 err_put_clk:
929 pm_runtime_disable(rga->dev);
930
931 return ret;
932 }
933
rga_remove(struct platform_device * pdev)934 static int rga_remove(struct platform_device *pdev)
935 {
936 struct rockchip_rga *rga = platform_get_drvdata(pdev);
937
938 dma_free_attrs(rga->dev, RGA_CMDBUF_SIZE, rga->cmdbuf_virt,
939 rga->cmdbuf_phy, DMA_ATTR_WRITE_COMBINE);
940
941 free_pages((unsigned long)rga->src_mmu_pages, 3);
942 free_pages((unsigned long)rga->dst_mmu_pages, 3);
943
944 v4l2_info(&rga->v4l2_dev, "Removing\n");
945
946 v4l2_m2m_release(rga->m2m_dev);
947 video_unregister_device(rga->vfd);
948 v4l2_device_unregister(&rga->v4l2_dev);
949
950 pm_runtime_disable(rga->dev);
951
952 return 0;
953 }
954
rga_runtime_suspend(struct device * dev)955 static int __maybe_unused rga_runtime_suspend(struct device *dev)
956 {
957 struct rockchip_rga *rga = dev_get_drvdata(dev);
958
959 rga_disable_clocks(rga);
960
961 return 0;
962 }
963
rga_runtime_resume(struct device * dev)964 static int __maybe_unused rga_runtime_resume(struct device *dev)
965 {
966 struct rockchip_rga *rga = dev_get_drvdata(dev);
967
968 return rga_enable_clocks(rga);
969 }
970
971 static const struct dev_pm_ops rga_pm = {
972 SET_RUNTIME_PM_OPS(rga_runtime_suspend,
973 rga_runtime_resume, NULL)
974 };
975
976 static const struct of_device_id rockchip_rga_match[] = {
977 {
978 .compatible = "rockchip,rk3288-rga",
979 },
980 {
981 .compatible = "rockchip,rk3399-rga",
982 },
983 {},
984 };
985
986 MODULE_DEVICE_TABLE(of, rockchip_rga_match);
987
988 static struct platform_driver rga_pdrv = {
989 .probe = rga_probe,
990 .remove = rga_remove,
991 .driver = {
992 .name = RGA_NAME,
993 .pm = &rga_pm,
994 .of_match_table = rockchip_rga_match,
995 },
996 };
997
998 module_platform_driver(rga_pdrv);
999
1000 MODULE_AUTHOR("Jacob Chen <jacob-chen@iotwrt.com>");
1001 MODULE_DESCRIPTION("Rockchip Raster 2d Graphic Acceleration Unit");
1002 MODULE_LICENSE("GPL");
1003