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13#include <linux/module.h>
14#include <linux/fs.h>
15#include <linux/timer.h>
16#include <linux/sched.h>
17#include <linux/slab.h>
18#include <linux/clk.h>
19#include <linux/interrupt.h>
20#include <linux/of.h>
21
22#include <linux/platform_device.h>
23#include <media/v4l2-mem2mem.h>
24#include <media/v4l2-device.h>
25#include <media/v4l2-ioctl.h>
26#include <media/videobuf2-core.h>
27#include <media/videobuf2-dma-contig.h>
28
29#include "g2d.h"
30#include "g2d-regs.h"
31
32#define fh2ctx(__fh) container_of(__fh, struct g2d_ctx, fh)
33
34static struct g2d_fmt formats[] = {
35 {
36 .name = "XRGB_8888",
37 .fourcc = V4L2_PIX_FMT_RGB32,
38 .depth = 32,
39 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_8888),
40 },
41 {
42 .name = "RGB_565",
43 .fourcc = V4L2_PIX_FMT_RGB565X,
44 .depth = 16,
45 .hw = COLOR_MODE(ORDER_XRGB, MODE_RGB_565),
46 },
47 {
48 .name = "XRGB_1555",
49 .fourcc = V4L2_PIX_FMT_RGB555X,
50 .depth = 16,
51 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_1555),
52 },
53 {
54 .name = "XRGB_4444",
55 .fourcc = V4L2_PIX_FMT_RGB444,
56 .depth = 16,
57 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_4444),
58 },
59 {
60 .name = "PACKED_RGB_888",
61 .fourcc = V4L2_PIX_FMT_RGB24,
62 .depth = 24,
63 .hw = COLOR_MODE(ORDER_XRGB, MODE_PACKED_RGB_888),
64 },
65};
66#define NUM_FORMATS ARRAY_SIZE(formats)
67
68static struct g2d_frame def_frame = {
69 .width = DEFAULT_WIDTH,
70 .height = DEFAULT_HEIGHT,
71 .c_width = DEFAULT_WIDTH,
72 .c_height = DEFAULT_HEIGHT,
73 .o_width = 0,
74 .o_height = 0,
75 .fmt = &formats[0],
76 .right = DEFAULT_WIDTH,
77 .bottom = DEFAULT_HEIGHT,
78};
79
80static struct g2d_fmt *find_fmt(struct v4l2_format *f)
81{
82 unsigned int i;
83 for (i = 0; i < NUM_FORMATS; i++) {
84 if (formats[i].fourcc == f->fmt.pix.pixelformat)
85 return &formats[i];
86 }
87 return NULL;
88}
89
90
91static struct g2d_frame *get_frame(struct g2d_ctx *ctx,
92 enum v4l2_buf_type type)
93{
94 switch (type) {
95 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
96 return &ctx->in;
97 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
98 return &ctx->out;
99 default:
100 return ERR_PTR(-EINVAL);
101 }
102}
103
104static int g2d_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
105 unsigned int *nbuffers, unsigned int *nplanes,
106 unsigned int sizes[], void *alloc_ctxs[])
107{
108 struct g2d_ctx *ctx = vb2_get_drv_priv(vq);
109 struct g2d_frame *f = get_frame(ctx, vq->type);
110
111 if (IS_ERR(f))
112 return PTR_ERR(f);
113
114 sizes[0] = f->size;
115 *nplanes = 1;
116 alloc_ctxs[0] = ctx->dev->alloc_ctx;
117
118 if (*nbuffers == 0)
119 *nbuffers = 1;
120
121 return 0;
122}
123
124static int g2d_buf_prepare(struct vb2_buffer *vb)
125{
126 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
127 struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
128
129 if (IS_ERR(f))
130 return PTR_ERR(f);
131 vb2_set_plane_payload(vb, 0, f->size);
132 return 0;
133}
134
135static void g2d_buf_queue(struct vb2_buffer *vb)
136{
137 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
138 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
139}
140
141static struct vb2_ops g2d_qops = {
142 .queue_setup = g2d_queue_setup,
143 .buf_prepare = g2d_buf_prepare,
144 .buf_queue = g2d_buf_queue,
145};
146
147static int queue_init(void *priv, struct vb2_queue *src_vq,
148 struct vb2_queue *dst_vq)
149{
150 struct g2d_ctx *ctx = priv;
151 int ret;
152
153 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
154 src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
155 src_vq->drv_priv = ctx;
156 src_vq->ops = &g2d_qops;
157 src_vq->mem_ops = &vb2_dma_contig_memops;
158 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
159 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
160 src_vq->lock = &ctx->dev->mutex;
161
162 ret = vb2_queue_init(src_vq);
163 if (ret)
164 return ret;
165
166 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
167 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
168 dst_vq->drv_priv = ctx;
169 dst_vq->ops = &g2d_qops;
170 dst_vq->mem_ops = &vb2_dma_contig_memops;
171 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
172 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
173 dst_vq->lock = &ctx->dev->mutex;
174
175 return vb2_queue_init(dst_vq);
176}
177
178static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
179{
180 struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
181 ctrl_handler);
182 unsigned long flags;
183
184 spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
185 switch (ctrl->id) {
186 case V4L2_CID_COLORFX:
187 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
188 ctx->rop = ROP4_INVERT;
189 else
190 ctx->rop = ROP4_COPY;
191 break;
192
193 case V4L2_CID_HFLIP:
194 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
195 break;
196
197 }
198 spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
199 return 0;
200}
201
202static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
203 .s_ctrl = g2d_s_ctrl,
204};
205
206static int g2d_setup_ctrls(struct g2d_ctx *ctx)
207{
208 struct g2d_dev *dev = ctx->dev;
209
210 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
211
212 ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
213 V4L2_CID_HFLIP, 0, 1, 1, 0);
214
215 ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
216 V4L2_CID_VFLIP, 0, 1, 1, 0);
217
218 v4l2_ctrl_new_std_menu(
219 &ctx->ctrl_handler,
220 &g2d_ctrl_ops,
221 V4L2_CID_COLORFX,
222 V4L2_COLORFX_NEGATIVE,
223 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
224 V4L2_COLORFX_NONE);
225
226 if (ctx->ctrl_handler.error) {
227 int err = ctx->ctrl_handler.error;
228 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
229 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
230 return err;
231 }
232
233 v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
234
235 return 0;
236}
237
238static int g2d_open(struct file *file)
239{
240 struct g2d_dev *dev = video_drvdata(file);
241 struct g2d_ctx *ctx = NULL;
242 int ret = 0;
243
244 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
245 if (!ctx)
246 return -ENOMEM;
247 ctx->dev = dev;
248
249 ctx->in = def_frame;
250 ctx->out = def_frame;
251
252 if (mutex_lock_interruptible(&dev->mutex)) {
253 kfree(ctx);
254 return -ERESTARTSYS;
255 }
256 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
257 if (IS_ERR(ctx->fh.m2m_ctx)) {
258 ret = PTR_ERR(ctx->fh.m2m_ctx);
259 mutex_unlock(&dev->mutex);
260 kfree(ctx);
261 return ret;
262 }
263 v4l2_fh_init(&ctx->fh, video_devdata(file));
264 file->private_data = &ctx->fh;
265 v4l2_fh_add(&ctx->fh);
266
267 g2d_setup_ctrls(ctx);
268
269
270 v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
271
272 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
273 mutex_unlock(&dev->mutex);
274
275 v4l2_info(&dev->v4l2_dev, "instance opened\n");
276 return 0;
277}
278
279static int g2d_release(struct file *file)
280{
281 struct g2d_dev *dev = video_drvdata(file);
282 struct g2d_ctx *ctx = fh2ctx(file->private_data);
283
284 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
285 v4l2_fh_del(&ctx->fh);
286 v4l2_fh_exit(&ctx->fh);
287 kfree(ctx);
288 v4l2_info(&dev->v4l2_dev, "instance closed\n");
289 return 0;
290}
291
292
293static int vidioc_querycap(struct file *file, void *priv,
294 struct v4l2_capability *cap)
295{
296 strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
297 strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
298 cap->bus_info[0] = 0;
299 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
300 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
301 return 0;
302}
303
304static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
305{
306 struct g2d_fmt *fmt;
307 if (f->index >= NUM_FORMATS)
308 return -EINVAL;
309 fmt = &formats[f->index];
310 f->pixelformat = fmt->fourcc;
311 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
312 return 0;
313}
314
315static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
316{
317 struct g2d_ctx *ctx = prv;
318 struct vb2_queue *vq;
319 struct g2d_frame *frm;
320
321 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
322 if (!vq)
323 return -EINVAL;
324 frm = get_frame(ctx, f->type);
325 if (IS_ERR(frm))
326 return PTR_ERR(frm);
327
328 f->fmt.pix.width = frm->width;
329 f->fmt.pix.height = frm->height;
330 f->fmt.pix.field = V4L2_FIELD_NONE;
331 f->fmt.pix.pixelformat = frm->fmt->fourcc;
332 f->fmt.pix.bytesperline = (frm->width * frm->fmt->depth) >> 3;
333 f->fmt.pix.sizeimage = frm->size;
334 return 0;
335}
336
337static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
338{
339 struct g2d_fmt *fmt;
340 enum v4l2_field *field;
341
342 fmt = find_fmt(f);
343 if (!fmt)
344 return -EINVAL;
345
346 field = &f->fmt.pix.field;
347 if (*field == V4L2_FIELD_ANY)
348 *field = V4L2_FIELD_NONE;
349 else if (*field != V4L2_FIELD_NONE)
350 return -EINVAL;
351
352 if (f->fmt.pix.width > MAX_WIDTH)
353 f->fmt.pix.width = MAX_WIDTH;
354 if (f->fmt.pix.height > MAX_HEIGHT)
355 f->fmt.pix.height = MAX_HEIGHT;
356
357 if (f->fmt.pix.width < 1)
358 f->fmt.pix.width = 1;
359 if (f->fmt.pix.height < 1)
360 f->fmt.pix.height = 1;
361
362 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
363 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
364 return 0;
365}
366
367static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
368{
369 struct g2d_ctx *ctx = prv;
370 struct g2d_dev *dev = ctx->dev;
371 struct vb2_queue *vq;
372 struct g2d_frame *frm;
373 struct g2d_fmt *fmt;
374 int ret = 0;
375
376
377
378 ret = vidioc_try_fmt(file, prv, f);
379 if (ret)
380 return ret;
381 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
382 if (vb2_is_busy(vq)) {
383 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
384 return -EBUSY;
385 }
386 frm = get_frame(ctx, f->type);
387 if (IS_ERR(frm))
388 return PTR_ERR(frm);
389 fmt = find_fmt(f);
390 if (!fmt)
391 return -EINVAL;
392 frm->width = f->fmt.pix.width;
393 frm->height = f->fmt.pix.height;
394 frm->size = f->fmt.pix.sizeimage;
395
396 frm->o_width = 0;
397 frm->o_height = 0;
398 frm->c_width = frm->width;
399 frm->c_height = frm->height;
400 frm->right = frm->width;
401 frm->bottom = frm->height;
402 frm->fmt = fmt;
403 frm->stride = f->fmt.pix.bytesperline;
404 return 0;
405}
406
407static int vidioc_cropcap(struct file *file, void *priv,
408 struct v4l2_cropcap *cr)
409{
410 struct g2d_ctx *ctx = priv;
411 struct g2d_frame *f;
412
413 f = get_frame(ctx, cr->type);
414 if (IS_ERR(f))
415 return PTR_ERR(f);
416
417 cr->bounds.left = 0;
418 cr->bounds.top = 0;
419 cr->bounds.width = f->width;
420 cr->bounds.height = f->height;
421 cr->defrect = cr->bounds;
422 return 0;
423}
424
425static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
426{
427 struct g2d_ctx *ctx = prv;
428 struct g2d_frame *f;
429
430 f = get_frame(ctx, cr->type);
431 if (IS_ERR(f))
432 return PTR_ERR(f);
433
434 cr->c.left = f->o_height;
435 cr->c.top = f->o_width;
436 cr->c.width = f->c_width;
437 cr->c.height = f->c_height;
438 return 0;
439}
440
441static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
442{
443 struct g2d_ctx *ctx = prv;
444 struct g2d_dev *dev = ctx->dev;
445 struct g2d_frame *f;
446
447 f = get_frame(ctx, cr->type);
448 if (IS_ERR(f))
449 return PTR_ERR(f);
450
451 if (cr->c.top < 0 || cr->c.left < 0) {
452 v4l2_err(&dev->v4l2_dev,
453 "doesn't support negative values for top & left\n");
454 return -EINVAL;
455 }
456
457 return 0;
458}
459
460static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
461{
462 struct g2d_ctx *ctx = prv;
463 struct g2d_frame *f;
464 int ret;
465
466 ret = vidioc_try_crop(file, prv, cr);
467 if (ret)
468 return ret;
469 f = get_frame(ctx, cr->type);
470 if (IS_ERR(f))
471 return PTR_ERR(f);
472
473 f->c_width = cr->c.width;
474 f->c_height = cr->c.height;
475 f->o_width = cr->c.left;
476 f->o_height = cr->c.top;
477 f->bottom = f->o_height + f->c_height;
478 f->right = f->o_width + f->c_width;
479 return 0;
480}
481
482static void job_abort(void *prv)
483{
484 struct g2d_ctx *ctx = prv;
485 struct g2d_dev *dev = ctx->dev;
486
487 if (dev->curr == NULL)
488 return;
489
490 wait_event_timeout(dev->irq_queue,
491 dev->curr == NULL,
492 msecs_to_jiffies(G2D_TIMEOUT));
493}
494
495static void device_run(void *prv)
496{
497 struct g2d_ctx *ctx = prv;
498 struct g2d_dev *dev = ctx->dev;
499 struct vb2_buffer *src, *dst;
500 unsigned long flags;
501 u32 cmd = 0;
502
503 dev->curr = ctx;
504
505 src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
506 dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
507
508 clk_enable(dev->gate);
509 g2d_reset(dev);
510
511 spin_lock_irqsave(&dev->ctrl_lock, flags);
512
513 g2d_set_src_size(dev, &ctx->in);
514 g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
515
516 g2d_set_dst_size(dev, &ctx->out);
517 g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
518
519 g2d_set_rop4(dev, ctx->rop);
520 g2d_set_flip(dev, ctx->flip);
521
522 if (ctx->in.c_width != ctx->out.c_width ||
523 ctx->in.c_height != ctx->out.c_height) {
524 if (dev->variant->hw_rev == TYPE_G2D_3X)
525 cmd |= CMD_V3_ENABLE_STRETCH;
526 else
527 g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
528 }
529
530 g2d_set_cmd(dev, cmd);
531 g2d_start(dev);
532
533 spin_unlock_irqrestore(&dev->ctrl_lock, flags);
534}
535
536static irqreturn_t g2d_isr(int irq, void *prv)
537{
538 struct g2d_dev *dev = prv;
539 struct g2d_ctx *ctx = dev->curr;
540 struct vb2_buffer *src, *dst;
541
542 g2d_clear_int(dev);
543 clk_disable(dev->gate);
544
545 BUG_ON(ctx == NULL);
546
547 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
548 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
549
550 BUG_ON(src == NULL);
551 BUG_ON(dst == NULL);
552
553 dst->v4l2_buf.timecode = src->v4l2_buf.timecode;
554 dst->v4l2_buf.timestamp = src->v4l2_buf.timestamp;
555 dst->v4l2_buf.flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
556 dst->v4l2_buf.flags |=
557 src->v4l2_buf.flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
558
559 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
560 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
561 v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
562
563 dev->curr = NULL;
564 wake_up(&dev->irq_queue);
565 return IRQ_HANDLED;
566}
567
568static const struct v4l2_file_operations g2d_fops = {
569 .owner = THIS_MODULE,
570 .open = g2d_open,
571 .release = g2d_release,
572 .poll = v4l2_m2m_fop_poll,
573 .unlocked_ioctl = video_ioctl2,
574 .mmap = v4l2_m2m_fop_mmap,
575};
576
577static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
578 .vidioc_querycap = vidioc_querycap,
579
580 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
581 .vidioc_g_fmt_vid_cap = vidioc_g_fmt,
582 .vidioc_try_fmt_vid_cap = vidioc_try_fmt,
583 .vidioc_s_fmt_vid_cap = vidioc_s_fmt,
584
585 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
586 .vidioc_g_fmt_vid_out = vidioc_g_fmt,
587 .vidioc_try_fmt_vid_out = vidioc_try_fmt,
588 .vidioc_s_fmt_vid_out = vidioc_s_fmt,
589
590 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
591 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
592 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
593 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
594
595 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
596 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
597
598 .vidioc_g_crop = vidioc_g_crop,
599 .vidioc_s_crop = vidioc_s_crop,
600 .vidioc_cropcap = vidioc_cropcap,
601};
602
603static struct video_device g2d_videodev = {
604 .name = G2D_NAME,
605 .fops = &g2d_fops,
606 .ioctl_ops = &g2d_ioctl_ops,
607 .minor = -1,
608 .release = video_device_release,
609 .vfl_dir = VFL_DIR_M2M,
610};
611
612static struct v4l2_m2m_ops g2d_m2m_ops = {
613 .device_run = device_run,
614 .job_abort = job_abort,
615};
616
617static const struct of_device_id exynos_g2d_match[];
618
619static int g2d_probe(struct platform_device *pdev)
620{
621 struct g2d_dev *dev;
622 struct video_device *vfd;
623 struct resource *res;
624 const struct of_device_id *of_id;
625 int ret = 0;
626
627 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
628 if (!dev)
629 return -ENOMEM;
630
631 spin_lock_init(&dev->ctrl_lock);
632 mutex_init(&dev->mutex);
633 atomic_set(&dev->num_inst, 0);
634 init_waitqueue_head(&dev->irq_queue);
635
636 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
637
638 dev->regs = devm_ioremap_resource(&pdev->dev, res);
639 if (IS_ERR(dev->regs))
640 return PTR_ERR(dev->regs);
641
642 dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
643 if (IS_ERR(dev->clk)) {
644 dev_err(&pdev->dev, "failed to get g2d clock\n");
645 return -ENXIO;
646 }
647
648 ret = clk_prepare(dev->clk);
649 if (ret) {
650 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
651 goto put_clk;
652 }
653
654 dev->gate = clk_get(&pdev->dev, "fimg2d");
655 if (IS_ERR(dev->gate)) {
656 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
657 ret = -ENXIO;
658 goto unprep_clk;
659 }
660
661 ret = clk_prepare(dev->gate);
662 if (ret) {
663 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
664 goto put_clk_gate;
665 }
666
667 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
668 if (!res) {
669 dev_err(&pdev->dev, "failed to find IRQ\n");
670 ret = -ENXIO;
671 goto unprep_clk_gate;
672 }
673
674 dev->irq = res->start;
675
676 ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
677 0, pdev->name, dev);
678 if (ret) {
679 dev_err(&pdev->dev, "failed to install IRQ\n");
680 goto put_clk_gate;
681 }
682
683 dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
684 if (IS_ERR(dev->alloc_ctx)) {
685 ret = PTR_ERR(dev->alloc_ctx);
686 goto unprep_clk_gate;
687 }
688
689 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
690 if (ret)
691 goto alloc_ctx_cleanup;
692 vfd = video_device_alloc();
693 if (!vfd) {
694 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
695 ret = -ENOMEM;
696 goto unreg_v4l2_dev;
697 }
698 *vfd = g2d_videodev;
699 vfd->lock = &dev->mutex;
700 vfd->v4l2_dev = &dev->v4l2_dev;
701 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
702 if (ret) {
703 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
704 goto rel_vdev;
705 }
706 video_set_drvdata(vfd, dev);
707 snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
708 dev->vfd = vfd;
709 v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
710 vfd->num);
711 platform_set_drvdata(pdev, dev);
712 dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
713 if (IS_ERR(dev->m2m_dev)) {
714 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
715 ret = PTR_ERR(dev->m2m_dev);
716 goto unreg_video_dev;
717 }
718
719 def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
720
721 if (!pdev->dev.of_node) {
722 dev->variant = g2d_get_drv_data(pdev);
723 } else {
724 of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
725 if (!of_id) {
726 ret = -ENODEV;
727 goto unreg_video_dev;
728 }
729 dev->variant = (struct g2d_variant *)of_id->data;
730 }
731
732 return 0;
733
734unreg_video_dev:
735 video_unregister_device(dev->vfd);
736rel_vdev:
737 video_device_release(vfd);
738unreg_v4l2_dev:
739 v4l2_device_unregister(&dev->v4l2_dev);
740alloc_ctx_cleanup:
741 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
742unprep_clk_gate:
743 clk_unprepare(dev->gate);
744put_clk_gate:
745 clk_put(dev->gate);
746unprep_clk:
747 clk_unprepare(dev->clk);
748put_clk:
749 clk_put(dev->clk);
750
751 return ret;
752}
753
754static int g2d_remove(struct platform_device *pdev)
755{
756 struct g2d_dev *dev = platform_get_drvdata(pdev);
757
758 v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
759 v4l2_m2m_release(dev->m2m_dev);
760 video_unregister_device(dev->vfd);
761 v4l2_device_unregister(&dev->v4l2_dev);
762 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
763 clk_unprepare(dev->gate);
764 clk_put(dev->gate);
765 clk_unprepare(dev->clk);
766 clk_put(dev->clk);
767 return 0;
768}
769
770static struct g2d_variant g2d_drvdata_v3x = {
771 .hw_rev = TYPE_G2D_3X,
772};
773
774static struct g2d_variant g2d_drvdata_v4x = {
775 .hw_rev = TYPE_G2D_4X,
776};
777
778static const struct of_device_id exynos_g2d_match[] = {
779 {
780 .compatible = "samsung,s5pv210-g2d",
781 .data = &g2d_drvdata_v3x,
782 }, {
783 .compatible = "samsung,exynos4212-g2d",
784 .data = &g2d_drvdata_v4x,
785 },
786 {},
787};
788MODULE_DEVICE_TABLE(of, exynos_g2d_match);
789
790static struct platform_device_id g2d_driver_ids[] = {
791 {
792 .name = "s5p-g2d",
793 .driver_data = (unsigned long)&g2d_drvdata_v3x,
794 }, {
795 .name = "s5p-g2d-v4x",
796 .driver_data = (unsigned long)&g2d_drvdata_v4x,
797 },
798 {},
799};
800MODULE_DEVICE_TABLE(platform, g2d_driver_ids);
801
802static struct platform_driver g2d_pdrv = {
803 .probe = g2d_probe,
804 .remove = g2d_remove,
805 .id_table = g2d_driver_ids,
806 .driver = {
807 .name = G2D_NAME,
808 .of_match_table = exynos_g2d_match,
809 },
810};
811
812module_platform_driver(g2d_pdrv);
813
814MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
815MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
816MODULE_LICENSE("GPL");
817
