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9#include <linux/module.h>
10#include <linux/fs.h>
11#include <linux/timer.h>
12#include <linux/sched.h>
13#include <linux/slab.h>
14#include <linux/clk.h>
15#include <linux/interrupt.h>
16#include <linux/of.h>
17
18#include <linux/platform_device.h>
19#include <media/v4l2-mem2mem.h>
20#include <media/v4l2-device.h>
21#include <media/v4l2-ioctl.h>
22#include <media/videobuf2-v4l2.h>
23#include <media/videobuf2-dma-contig.h>
24
25#include "g2d.h"
26#include "g2d-regs.h"
27
28#define fh2ctx(__fh) container_of(__fh, struct g2d_ctx, fh)
29
30static struct g2d_fmt formats[] = {
31 {
32 .fourcc = V4L2_PIX_FMT_RGB32,
33 .depth = 32,
34 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_8888),
35 },
36 {
37 .fourcc = V4L2_PIX_FMT_RGB565X,
38 .depth = 16,
39 .hw = COLOR_MODE(ORDER_XRGB, MODE_RGB_565),
40 },
41 {
42 .fourcc = V4L2_PIX_FMT_RGB555X,
43 .depth = 16,
44 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_1555),
45 },
46 {
47 .fourcc = V4L2_PIX_FMT_RGB444,
48 .depth = 16,
49 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_4444),
50 },
51 {
52 .fourcc = V4L2_PIX_FMT_RGB24,
53 .depth = 24,
54 .hw = COLOR_MODE(ORDER_XRGB, MODE_PACKED_RGB_888),
55 },
56};
57#define NUM_FORMATS ARRAY_SIZE(formats)
58
59static struct g2d_frame def_frame = {
60 .width = DEFAULT_WIDTH,
61 .height = DEFAULT_HEIGHT,
62 .c_width = DEFAULT_WIDTH,
63 .c_height = DEFAULT_HEIGHT,
64 .o_width = 0,
65 .o_height = 0,
66 .fmt = &formats[0],
67 .right = DEFAULT_WIDTH,
68 .bottom = DEFAULT_HEIGHT,
69};
70
71static struct g2d_fmt *find_fmt(struct v4l2_format *f)
72{
73 unsigned int i;
74 for (i = 0; i < NUM_FORMATS; i++) {
75 if (formats[i].fourcc == f->fmt.pix.pixelformat)
76 return &formats[i];
77 }
78 return NULL;
79}
80
81
82static struct g2d_frame *get_frame(struct g2d_ctx *ctx,
83 enum v4l2_buf_type type)
84{
85 switch (type) {
86 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
87 return &ctx->in;
88 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
89 return &ctx->out;
90 default:
91 return ERR_PTR(-EINVAL);
92 }
93}
94
95static int g2d_queue_setup(struct vb2_queue *vq,
96 unsigned int *nbuffers, unsigned int *nplanes,
97 unsigned int sizes[], struct device *alloc_devs[])
98{
99 struct g2d_ctx *ctx = vb2_get_drv_priv(vq);
100 struct g2d_frame *f = get_frame(ctx, vq->type);
101
102 if (IS_ERR(f))
103 return PTR_ERR(f);
104
105 sizes[0] = f->size;
106 *nplanes = 1;
107
108 if (*nbuffers == 0)
109 *nbuffers = 1;
110
111 return 0;
112}
113
114static int g2d_buf_prepare(struct vb2_buffer *vb)
115{
116 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
117 struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
118
119 if (IS_ERR(f))
120 return PTR_ERR(f);
121 vb2_set_plane_payload(vb, 0, f->size);
122 return 0;
123}
124
125static void g2d_buf_queue(struct vb2_buffer *vb)
126{
127 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
128 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
129 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
130}
131
132static const struct vb2_ops g2d_qops = {
133 .queue_setup = g2d_queue_setup,
134 .buf_prepare = g2d_buf_prepare,
135 .buf_queue = g2d_buf_queue,
136 .wait_prepare = vb2_ops_wait_prepare,
137 .wait_finish = vb2_ops_wait_finish,
138};
139
140static int queue_init(void *priv, struct vb2_queue *src_vq,
141 struct vb2_queue *dst_vq)
142{
143 struct g2d_ctx *ctx = priv;
144 int ret;
145
146 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
147 src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
148 src_vq->drv_priv = ctx;
149 src_vq->ops = &g2d_qops;
150 src_vq->mem_ops = &vb2_dma_contig_memops;
151 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
152 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
153 src_vq->lock = &ctx->dev->mutex;
154 src_vq->dev = ctx->dev->v4l2_dev.dev;
155
156 ret = vb2_queue_init(src_vq);
157 if (ret)
158 return ret;
159
160 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
161 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
162 dst_vq->drv_priv = ctx;
163 dst_vq->ops = &g2d_qops;
164 dst_vq->mem_ops = &vb2_dma_contig_memops;
165 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
166 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
167 dst_vq->lock = &ctx->dev->mutex;
168 dst_vq->dev = ctx->dev->v4l2_dev.dev;
169
170 return vb2_queue_init(dst_vq);
171}
172
173static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
174{
175 struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
176 ctrl_handler);
177 unsigned long flags;
178
179 spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
180 switch (ctrl->id) {
181 case V4L2_CID_COLORFX:
182 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
183 ctx->rop = ROP4_INVERT;
184 else
185 ctx->rop = ROP4_COPY;
186 break;
187
188 case V4L2_CID_HFLIP:
189 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
190 break;
191
192 }
193 spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
194 return 0;
195}
196
197static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
198 .s_ctrl = g2d_s_ctrl,
199};
200
201static int g2d_setup_ctrls(struct g2d_ctx *ctx)
202{
203 struct g2d_dev *dev = ctx->dev;
204
205 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
206
207 ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
208 V4L2_CID_HFLIP, 0, 1, 1, 0);
209
210 ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
211 V4L2_CID_VFLIP, 0, 1, 1, 0);
212
213 v4l2_ctrl_new_std_menu(
214 &ctx->ctrl_handler,
215 &g2d_ctrl_ops,
216 V4L2_CID_COLORFX,
217 V4L2_COLORFX_NEGATIVE,
218 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
219 V4L2_COLORFX_NONE);
220
221 if (ctx->ctrl_handler.error) {
222 int err = ctx->ctrl_handler.error;
223 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
224 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
225 return err;
226 }
227
228 v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
229
230 return 0;
231}
232
233static int g2d_open(struct file *file)
234{
235 struct g2d_dev *dev = video_drvdata(file);
236 struct g2d_ctx *ctx = NULL;
237 int ret = 0;
238
239 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
240 if (!ctx)
241 return -ENOMEM;
242 ctx->dev = dev;
243
244 ctx->in = def_frame;
245 ctx->out = def_frame;
246
247 if (mutex_lock_interruptible(&dev->mutex)) {
248 kfree(ctx);
249 return -ERESTARTSYS;
250 }
251 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
252 if (IS_ERR(ctx->fh.m2m_ctx)) {
253 ret = PTR_ERR(ctx->fh.m2m_ctx);
254 mutex_unlock(&dev->mutex);
255 kfree(ctx);
256 return ret;
257 }
258 v4l2_fh_init(&ctx->fh, video_devdata(file));
259 file->private_data = &ctx->fh;
260 v4l2_fh_add(&ctx->fh);
261
262 g2d_setup_ctrls(ctx);
263
264
265 v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
266
267 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
268 mutex_unlock(&dev->mutex);
269
270 v4l2_info(&dev->v4l2_dev, "instance opened\n");
271 return 0;
272}
273
274static int g2d_release(struct file *file)
275{
276 struct g2d_dev *dev = video_drvdata(file);
277 struct g2d_ctx *ctx = fh2ctx(file->private_data);
278
279 mutex_lock(&dev->mutex);
280 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
281 mutex_unlock(&dev->mutex);
282 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
283 v4l2_fh_del(&ctx->fh);
284 v4l2_fh_exit(&ctx->fh);
285 kfree(ctx);
286 v4l2_info(&dev->v4l2_dev, "instance closed\n");
287 return 0;
288}
289
290
291static int vidioc_querycap(struct file *file, void *priv,
292 struct v4l2_capability *cap)
293{
294 strscpy(cap->driver, G2D_NAME, sizeof(cap->driver));
295 strscpy(cap->card, G2D_NAME, sizeof(cap->card));
296 cap->bus_info[0] = 0;
297 return 0;
298}
299
300static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
301{
302 if (f->index >= NUM_FORMATS)
303 return -EINVAL;
304 f->pixelformat = formats[f->index].fourcc;
305 return 0;
306}
307
308static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
309{
310 struct g2d_ctx *ctx = prv;
311 struct vb2_queue *vq;
312 struct g2d_frame *frm;
313
314 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
315 if (!vq)
316 return -EINVAL;
317 frm = get_frame(ctx, f->type);
318 if (IS_ERR(frm))
319 return PTR_ERR(frm);
320
321 f->fmt.pix.width = frm->width;
322 f->fmt.pix.height = frm->height;
323 f->fmt.pix.field = V4L2_FIELD_NONE;
324 f->fmt.pix.pixelformat = frm->fmt->fourcc;
325 f->fmt.pix.bytesperline = (frm->width * frm->fmt->depth) >> 3;
326 f->fmt.pix.sizeimage = frm->size;
327 return 0;
328}
329
330static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
331{
332 struct g2d_fmt *fmt;
333 enum v4l2_field *field;
334
335 fmt = find_fmt(f);
336 if (!fmt)
337 return -EINVAL;
338
339 field = &f->fmt.pix.field;
340 if (*field == V4L2_FIELD_ANY)
341 *field = V4L2_FIELD_NONE;
342 else if (*field != V4L2_FIELD_NONE)
343 return -EINVAL;
344
345 if (f->fmt.pix.width > MAX_WIDTH)
346 f->fmt.pix.width = MAX_WIDTH;
347 if (f->fmt.pix.height > MAX_HEIGHT)
348 f->fmt.pix.height = MAX_HEIGHT;
349
350 if (f->fmt.pix.width < 1)
351 f->fmt.pix.width = 1;
352 if (f->fmt.pix.height < 1)
353 f->fmt.pix.height = 1;
354
355 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
356 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
357 return 0;
358}
359
360static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
361{
362 struct g2d_ctx *ctx = prv;
363 struct g2d_dev *dev = ctx->dev;
364 struct vb2_queue *vq;
365 struct g2d_frame *frm;
366 struct g2d_fmt *fmt;
367 int ret = 0;
368
369
370
371 ret = vidioc_try_fmt(file, prv, f);
372 if (ret)
373 return ret;
374 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
375 if (vb2_is_busy(vq)) {
376 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
377 return -EBUSY;
378 }
379 frm = get_frame(ctx, f->type);
380 if (IS_ERR(frm))
381 return PTR_ERR(frm);
382 fmt = find_fmt(f);
383 if (!fmt)
384 return -EINVAL;
385 frm->width = f->fmt.pix.width;
386 frm->height = f->fmt.pix.height;
387 frm->size = f->fmt.pix.sizeimage;
388
389 frm->o_width = 0;
390 frm->o_height = 0;
391 frm->c_width = frm->width;
392 frm->c_height = frm->height;
393 frm->right = frm->width;
394 frm->bottom = frm->height;
395 frm->fmt = fmt;
396 frm->stride = f->fmt.pix.bytesperline;
397 return 0;
398}
399
400static int vidioc_g_selection(struct file *file, void *prv,
401 struct v4l2_selection *s)
402{
403 struct g2d_ctx *ctx = prv;
404 struct g2d_frame *f;
405
406 f = get_frame(ctx, s->type);
407 if (IS_ERR(f))
408 return PTR_ERR(f);
409
410 switch (s->target) {
411 case V4L2_SEL_TGT_CROP:
412 case V4L2_SEL_TGT_CROP_DEFAULT:
413 case V4L2_SEL_TGT_CROP_BOUNDS:
414 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
415 return -EINVAL;
416 break;
417 case V4L2_SEL_TGT_COMPOSE:
418 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
419 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
420 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
421 return -EINVAL;
422 break;
423 default:
424 return -EINVAL;
425 }
426
427 switch (s->target) {
428 case V4L2_SEL_TGT_CROP:
429 case V4L2_SEL_TGT_COMPOSE:
430 s->r.left = f->o_height;
431 s->r.top = f->o_width;
432 s->r.width = f->c_width;
433 s->r.height = f->c_height;
434 break;
435 case V4L2_SEL_TGT_CROP_DEFAULT:
436 case V4L2_SEL_TGT_CROP_BOUNDS:
437 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
438 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
439 s->r.left = 0;
440 s->r.top = 0;
441 s->r.width = f->width;
442 s->r.height = f->height;
443 break;
444 default:
445 return -EINVAL;
446 }
447 return 0;
448}
449
450static int vidioc_try_selection(struct file *file, void *prv,
451 const struct v4l2_selection *s)
452{
453 struct g2d_ctx *ctx = prv;
454 struct g2d_dev *dev = ctx->dev;
455 struct g2d_frame *f;
456
457 f = get_frame(ctx, s->type);
458 if (IS_ERR(f))
459 return PTR_ERR(f);
460
461 if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
462 if (s->target != V4L2_SEL_TGT_COMPOSE)
463 return -EINVAL;
464 } else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
465 if (s->target != V4L2_SEL_TGT_CROP)
466 return -EINVAL;
467 }
468
469 if (s->r.top < 0 || s->r.left < 0) {
470 v4l2_err(&dev->v4l2_dev,
471 "doesn't support negative values for top & left\n");
472 return -EINVAL;
473 }
474
475 return 0;
476}
477
478static int vidioc_s_selection(struct file *file, void *prv,
479 struct v4l2_selection *s)
480{
481 struct g2d_ctx *ctx = prv;
482 struct g2d_frame *f;
483 int ret;
484
485 ret = vidioc_try_selection(file, prv, s);
486 if (ret)
487 return ret;
488 f = get_frame(ctx, s->type);
489 if (IS_ERR(f))
490 return PTR_ERR(f);
491
492 f->c_width = s->r.width;
493 f->c_height = s->r.height;
494 f->o_width = s->r.left;
495 f->o_height = s->r.top;
496 f->bottom = f->o_height + f->c_height;
497 f->right = f->o_width + f->c_width;
498 return 0;
499}
500
501static void device_run(void *prv)
502{
503 struct g2d_ctx *ctx = prv;
504 struct g2d_dev *dev = ctx->dev;
505 struct vb2_v4l2_buffer *src, *dst;
506 unsigned long flags;
507 u32 cmd = 0;
508
509 dev->curr = ctx;
510
511 src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
512 dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
513
514 clk_enable(dev->gate);
515 g2d_reset(dev);
516
517 spin_lock_irqsave(&dev->ctrl_lock, flags);
518
519 g2d_set_src_size(dev, &ctx->in);
520 g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(&src->vb2_buf, 0));
521
522 g2d_set_dst_size(dev, &ctx->out);
523 g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(&dst->vb2_buf, 0));
524
525 g2d_set_rop4(dev, ctx->rop);
526 g2d_set_flip(dev, ctx->flip);
527
528 if (ctx->in.c_width != ctx->out.c_width ||
529 ctx->in.c_height != ctx->out.c_height) {
530 if (dev->variant->hw_rev == TYPE_G2D_3X)
531 cmd |= CMD_V3_ENABLE_STRETCH;
532 else
533 g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
534 }
535
536 g2d_set_cmd(dev, cmd);
537 g2d_start(dev);
538
539 spin_unlock_irqrestore(&dev->ctrl_lock, flags);
540}
541
542static irqreturn_t g2d_isr(int irq, void *prv)
543{
544 struct g2d_dev *dev = prv;
545 struct g2d_ctx *ctx = dev->curr;
546 struct vb2_v4l2_buffer *src, *dst;
547
548 g2d_clear_int(dev);
549 clk_disable(dev->gate);
550
551 BUG_ON(ctx == NULL);
552
553 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
554 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
555
556 BUG_ON(src == NULL);
557 BUG_ON(dst == NULL);
558
559 dst->timecode = src->timecode;
560 dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
561 dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
562 dst->flags |=
563 src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
564
565 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
566 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
567 v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
568
569 dev->curr = NULL;
570 return IRQ_HANDLED;
571}
572
573static const struct v4l2_file_operations g2d_fops = {
574 .owner = THIS_MODULE,
575 .open = g2d_open,
576 .release = g2d_release,
577 .poll = v4l2_m2m_fop_poll,
578 .unlocked_ioctl = video_ioctl2,
579 .mmap = v4l2_m2m_fop_mmap,
580};
581
582static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
583 .vidioc_querycap = vidioc_querycap,
584
585 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
586 .vidioc_g_fmt_vid_cap = vidioc_g_fmt,
587 .vidioc_try_fmt_vid_cap = vidioc_try_fmt,
588 .vidioc_s_fmt_vid_cap = vidioc_s_fmt,
589
590 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
591 .vidioc_g_fmt_vid_out = vidioc_g_fmt,
592 .vidioc_try_fmt_vid_out = vidioc_try_fmt,
593 .vidioc_s_fmt_vid_out = vidioc_s_fmt,
594
595 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
596 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
597 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
598 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
599
600 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
601 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
602
603 .vidioc_g_selection = vidioc_g_selection,
604 .vidioc_s_selection = vidioc_s_selection,
605};
606
607static const struct video_device g2d_videodev = {
608 .name = G2D_NAME,
609 .fops = &g2d_fops,
610 .ioctl_ops = &g2d_ioctl_ops,
611 .minor = -1,
612 .release = video_device_release,
613 .vfl_dir = VFL_DIR_M2M,
614};
615
616static const struct v4l2_m2m_ops g2d_m2m_ops = {
617 .device_run = device_run,
618};
619
620static const struct of_device_id exynos_g2d_match[];
621
622static int g2d_probe(struct platform_device *pdev)
623{
624 struct g2d_dev *dev;
625 struct video_device *vfd;
626 const struct of_device_id *of_id;
627 int ret = 0;
628
629 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
630 if (!dev)
631 return -ENOMEM;
632
633 spin_lock_init(&dev->ctrl_lock);
634 mutex_init(&dev->mutex);
635 atomic_set(&dev->num_inst, 0);
636
637 dev->regs = devm_platform_ioremap_resource(pdev, 0);
638 if (IS_ERR(dev->regs))
639 return PTR_ERR(dev->regs);
640
641 dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
642 if (IS_ERR(dev->clk)) {
643 dev_err(&pdev->dev, "failed to get g2d clock\n");
644 return -ENXIO;
645 }
646
647 ret = clk_prepare(dev->clk);
648 if (ret) {
649 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
650 goto put_clk;
651 }
652
653 dev->gate = clk_get(&pdev->dev, "fimg2d");
654 if (IS_ERR(dev->gate)) {
655 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
656 ret = -ENXIO;
657 goto unprep_clk;
658 }
659
660 ret = clk_prepare(dev->gate);
661 if (ret) {
662 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
663 goto put_clk_gate;
664 }
665
666 ret = platform_get_irq(pdev, 0);
667 if (ret < 0)
668 goto unprep_clk_gate;
669
670 dev->irq = ret;
671
672 ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
673 0, pdev->name, dev);
674 if (ret) {
675 dev_err(&pdev->dev, "failed to install IRQ\n");
676 goto unprep_clk_gate;
677 }
678
679 vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
680
681 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
682 if (ret)
683 goto unprep_clk_gate;
684 vfd = video_device_alloc();
685 if (!vfd) {
686 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
687 ret = -ENOMEM;
688 goto unreg_v4l2_dev;
689 }
690 *vfd = g2d_videodev;
691 set_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags);
692 vfd->lock = &dev->mutex;
693 vfd->v4l2_dev = &dev->v4l2_dev;
694 vfd->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
695
696 platform_set_drvdata(pdev, dev);
697 dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
698 if (IS_ERR(dev->m2m_dev)) {
699 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
700 ret = PTR_ERR(dev->m2m_dev);
701 goto rel_vdev;
702 }
703
704 def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
705
706 of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
707 if (!of_id) {
708 ret = -ENODEV;
709 goto free_m2m;
710 }
711 dev->variant = (struct g2d_variant *)of_id->data;
712
713 ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
714 if (ret) {
715 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
716 goto free_m2m;
717 }
718 video_set_drvdata(vfd, dev);
719 dev->vfd = vfd;
720 v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
721 vfd->num);
722
723 return 0;
724
725free_m2m:
726 v4l2_m2m_release(dev->m2m_dev);
727rel_vdev:
728 video_device_release(vfd);
729unreg_v4l2_dev:
730 v4l2_device_unregister(&dev->v4l2_dev);
731unprep_clk_gate:
732 clk_unprepare(dev->gate);
733put_clk_gate:
734 clk_put(dev->gate);
735unprep_clk:
736 clk_unprepare(dev->clk);
737put_clk:
738 clk_put(dev->clk);
739
740 return ret;
741}
742
743static int g2d_remove(struct platform_device *pdev)
744{
745 struct g2d_dev *dev = platform_get_drvdata(pdev);
746
747 v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
748 v4l2_m2m_release(dev->m2m_dev);
749 video_unregister_device(dev->vfd);
750 v4l2_device_unregister(&dev->v4l2_dev);
751 vb2_dma_contig_clear_max_seg_size(&pdev->dev);
752 clk_unprepare(dev->gate);
753 clk_put(dev->gate);
754 clk_unprepare(dev->clk);
755 clk_put(dev->clk);
756 return 0;
757}
758
759static struct g2d_variant g2d_drvdata_v3x = {
760 .hw_rev = TYPE_G2D_3X,
761};
762
763static struct g2d_variant g2d_drvdata_v4x = {
764 .hw_rev = TYPE_G2D_4X,
765};
766
767static const struct of_device_id exynos_g2d_match[] = {
768 {
769 .compatible = "samsung,s5pv210-g2d",
770 .data = &g2d_drvdata_v3x,
771 }, {
772 .compatible = "samsung,exynos4212-g2d",
773 .data = &g2d_drvdata_v4x,
774 },
775 {},
776};
777MODULE_DEVICE_TABLE(of, exynos_g2d_match);
778
779static struct platform_driver g2d_pdrv = {
780 .probe = g2d_probe,
781 .remove = g2d_remove,
782 .driver = {
783 .name = G2D_NAME,
784 .of_match_table = exynos_g2d_match,
785 },
786};
787
788module_platform_driver(g2d_pdrv);
789
790MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
791MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
792MODULE_LICENSE("GPL");
793
