1 /*
2 * Samsung S5P G2D - 2D Graphics Accelerator Driver
3 *
4 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
5 * Kamil Debski, <k.debski@samsung.com>
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 by the
9 * Free Software Foundation; either version 2 of the
10 * License, or (at your option) any later version
11 */
12
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-v4l2.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
34 static 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
68 static 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
find_fmt(struct v4l2_format * f)80 static 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
get_frame(struct g2d_ctx * ctx,enum v4l2_buf_type type)91 static 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
g2d_queue_setup(struct vb2_queue * vq,const void * parg,unsigned int * nbuffers,unsigned int * nplanes,unsigned int sizes[],void * alloc_ctxs[])104 static int g2d_queue_setup(struct vb2_queue *vq, const void *parg,
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
g2d_buf_prepare(struct vb2_buffer * vb)124 static 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
g2d_buf_queue(struct vb2_buffer * vb)135 static void g2d_buf_queue(struct vb2_buffer *vb)
136 {
137 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
138 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
139 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
140 }
141
142 static struct vb2_ops g2d_qops = {
143 .queue_setup = g2d_queue_setup,
144 .buf_prepare = g2d_buf_prepare,
145 .buf_queue = g2d_buf_queue,
146 };
147
queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)148 static int queue_init(void *priv, struct vb2_queue *src_vq,
149 struct vb2_queue *dst_vq)
150 {
151 struct g2d_ctx *ctx = priv;
152 int ret;
153
154 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
155 src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
156 src_vq->drv_priv = ctx;
157 src_vq->ops = &g2d_qops;
158 src_vq->mem_ops = &vb2_dma_contig_memops;
159 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
160 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
161 src_vq->lock = &ctx->dev->mutex;
162
163 ret = vb2_queue_init(src_vq);
164 if (ret)
165 return ret;
166
167 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
168 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
169 dst_vq->drv_priv = ctx;
170 dst_vq->ops = &g2d_qops;
171 dst_vq->mem_ops = &vb2_dma_contig_memops;
172 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
173 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
174 dst_vq->lock = &ctx->dev->mutex;
175
176 return vb2_queue_init(dst_vq);
177 }
178
g2d_s_ctrl(struct v4l2_ctrl * ctrl)179 static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
180 {
181 struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
182 ctrl_handler);
183 unsigned long flags;
184
185 spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
186 switch (ctrl->id) {
187 case V4L2_CID_COLORFX:
188 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
189 ctx->rop = ROP4_INVERT;
190 else
191 ctx->rop = ROP4_COPY;
192 break;
193
194 case V4L2_CID_HFLIP:
195 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
196 break;
197
198 }
199 spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
200 return 0;
201 }
202
203 static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
204 .s_ctrl = g2d_s_ctrl,
205 };
206
g2d_setup_ctrls(struct g2d_ctx * ctx)207 static int g2d_setup_ctrls(struct g2d_ctx *ctx)
208 {
209 struct g2d_dev *dev = ctx->dev;
210
211 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
212
213 ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
214 V4L2_CID_HFLIP, 0, 1, 1, 0);
215
216 ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
217 V4L2_CID_VFLIP, 0, 1, 1, 0);
218
219 v4l2_ctrl_new_std_menu(
220 &ctx->ctrl_handler,
221 &g2d_ctrl_ops,
222 V4L2_CID_COLORFX,
223 V4L2_COLORFX_NEGATIVE,
224 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
225 V4L2_COLORFX_NONE);
226
227 if (ctx->ctrl_handler.error) {
228 int err = ctx->ctrl_handler.error;
229 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
230 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
231 return err;
232 }
233
234 v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
235
236 return 0;
237 }
238
g2d_open(struct file * file)239 static int g2d_open(struct file *file)
240 {
241 struct g2d_dev *dev = video_drvdata(file);
242 struct g2d_ctx *ctx = NULL;
243 int ret = 0;
244
245 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
246 if (!ctx)
247 return -ENOMEM;
248 ctx->dev = dev;
249 /* Set default formats */
250 ctx->in = def_frame;
251 ctx->out = def_frame;
252
253 if (mutex_lock_interruptible(&dev->mutex)) {
254 kfree(ctx);
255 return -ERESTARTSYS;
256 }
257 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
258 if (IS_ERR(ctx->fh.m2m_ctx)) {
259 ret = PTR_ERR(ctx->fh.m2m_ctx);
260 mutex_unlock(&dev->mutex);
261 kfree(ctx);
262 return ret;
263 }
264 v4l2_fh_init(&ctx->fh, video_devdata(file));
265 file->private_data = &ctx->fh;
266 v4l2_fh_add(&ctx->fh);
267
268 g2d_setup_ctrls(ctx);
269
270 /* Write the default values to the ctx struct */
271 v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
272
273 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
274 mutex_unlock(&dev->mutex);
275
276 v4l2_info(&dev->v4l2_dev, "instance opened\n");
277 return 0;
278 }
279
g2d_release(struct file * file)280 static int g2d_release(struct file *file)
281 {
282 struct g2d_dev *dev = video_drvdata(file);
283 struct g2d_ctx *ctx = fh2ctx(file->private_data);
284
285 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
286 v4l2_fh_del(&ctx->fh);
287 v4l2_fh_exit(&ctx->fh);
288 kfree(ctx);
289 v4l2_info(&dev->v4l2_dev, "instance closed\n");
290 return 0;
291 }
292
293
vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * cap)294 static int vidioc_querycap(struct file *file, void *priv,
295 struct v4l2_capability *cap)
296 {
297 strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
298 strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
299 cap->bus_info[0] = 0;
300 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
301 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
302 return 0;
303 }
304
vidioc_enum_fmt(struct file * file,void * prv,struct v4l2_fmtdesc * f)305 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
306 {
307 struct g2d_fmt *fmt;
308 if (f->index >= NUM_FORMATS)
309 return -EINVAL;
310 fmt = &formats[f->index];
311 f->pixelformat = fmt->fourcc;
312 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
313 return 0;
314 }
315
vidioc_g_fmt(struct file * file,void * prv,struct v4l2_format * f)316 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
317 {
318 struct g2d_ctx *ctx = prv;
319 struct vb2_queue *vq;
320 struct g2d_frame *frm;
321
322 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
323 if (!vq)
324 return -EINVAL;
325 frm = get_frame(ctx, f->type);
326 if (IS_ERR(frm))
327 return PTR_ERR(frm);
328
329 f->fmt.pix.width = frm->width;
330 f->fmt.pix.height = frm->height;
331 f->fmt.pix.field = V4L2_FIELD_NONE;
332 f->fmt.pix.pixelformat = frm->fmt->fourcc;
333 f->fmt.pix.bytesperline = (frm->width * frm->fmt->depth) >> 3;
334 f->fmt.pix.sizeimage = frm->size;
335 return 0;
336 }
337
vidioc_try_fmt(struct file * file,void * prv,struct v4l2_format * f)338 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
339 {
340 struct g2d_fmt *fmt;
341 enum v4l2_field *field;
342
343 fmt = find_fmt(f);
344 if (!fmt)
345 return -EINVAL;
346
347 field = &f->fmt.pix.field;
348 if (*field == V4L2_FIELD_ANY)
349 *field = V4L2_FIELD_NONE;
350 else if (*field != V4L2_FIELD_NONE)
351 return -EINVAL;
352
353 if (f->fmt.pix.width > MAX_WIDTH)
354 f->fmt.pix.width = MAX_WIDTH;
355 if (f->fmt.pix.height > MAX_HEIGHT)
356 f->fmt.pix.height = MAX_HEIGHT;
357
358 if (f->fmt.pix.width < 1)
359 f->fmt.pix.width = 1;
360 if (f->fmt.pix.height < 1)
361 f->fmt.pix.height = 1;
362
363 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
364 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
365 return 0;
366 }
367
vidioc_s_fmt(struct file * file,void * prv,struct v4l2_format * f)368 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
369 {
370 struct g2d_ctx *ctx = prv;
371 struct g2d_dev *dev = ctx->dev;
372 struct vb2_queue *vq;
373 struct g2d_frame *frm;
374 struct g2d_fmt *fmt;
375 int ret = 0;
376
377 /* Adjust all values accordingly to the hardware capabilities
378 * and chosen format. */
379 ret = vidioc_try_fmt(file, prv, f);
380 if (ret)
381 return ret;
382 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
383 if (vb2_is_busy(vq)) {
384 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
385 return -EBUSY;
386 }
387 frm = get_frame(ctx, f->type);
388 if (IS_ERR(frm))
389 return PTR_ERR(frm);
390 fmt = find_fmt(f);
391 if (!fmt)
392 return -EINVAL;
393 frm->width = f->fmt.pix.width;
394 frm->height = f->fmt.pix.height;
395 frm->size = f->fmt.pix.sizeimage;
396 /* Reset crop settings */
397 frm->o_width = 0;
398 frm->o_height = 0;
399 frm->c_width = frm->width;
400 frm->c_height = frm->height;
401 frm->right = frm->width;
402 frm->bottom = frm->height;
403 frm->fmt = fmt;
404 frm->stride = f->fmt.pix.bytesperline;
405 return 0;
406 }
407
vidioc_cropcap(struct file * file,void * priv,struct v4l2_cropcap * cr)408 static int vidioc_cropcap(struct file *file, void *priv,
409 struct v4l2_cropcap *cr)
410 {
411 struct g2d_ctx *ctx = priv;
412 struct g2d_frame *f;
413
414 f = get_frame(ctx, cr->type);
415 if (IS_ERR(f))
416 return PTR_ERR(f);
417
418 cr->bounds.left = 0;
419 cr->bounds.top = 0;
420 cr->bounds.width = f->width;
421 cr->bounds.height = f->height;
422 cr->defrect = cr->bounds;
423 return 0;
424 }
425
vidioc_g_crop(struct file * file,void * prv,struct v4l2_crop * cr)426 static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
427 {
428 struct g2d_ctx *ctx = prv;
429 struct g2d_frame *f;
430
431 f = get_frame(ctx, cr->type);
432 if (IS_ERR(f))
433 return PTR_ERR(f);
434
435 cr->c.left = f->o_height;
436 cr->c.top = f->o_width;
437 cr->c.width = f->c_width;
438 cr->c.height = f->c_height;
439 return 0;
440 }
441
vidioc_try_crop(struct file * file,void * prv,const struct v4l2_crop * cr)442 static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
443 {
444 struct g2d_ctx *ctx = prv;
445 struct g2d_dev *dev = ctx->dev;
446 struct g2d_frame *f;
447
448 f = get_frame(ctx, cr->type);
449 if (IS_ERR(f))
450 return PTR_ERR(f);
451
452 if (cr->c.top < 0 || cr->c.left < 0) {
453 v4l2_err(&dev->v4l2_dev,
454 "doesn't support negative values for top & left\n");
455 return -EINVAL;
456 }
457
458 return 0;
459 }
460
vidioc_s_crop(struct file * file,void * prv,const struct v4l2_crop * cr)461 static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
462 {
463 struct g2d_ctx *ctx = prv;
464 struct g2d_frame *f;
465 int ret;
466
467 ret = vidioc_try_crop(file, prv, cr);
468 if (ret)
469 return ret;
470 f = get_frame(ctx, cr->type);
471 if (IS_ERR(f))
472 return PTR_ERR(f);
473
474 f->c_width = cr->c.width;
475 f->c_height = cr->c.height;
476 f->o_width = cr->c.left;
477 f->o_height = cr->c.top;
478 f->bottom = f->o_height + f->c_height;
479 f->right = f->o_width + f->c_width;
480 return 0;
481 }
482
job_abort(void * prv)483 static void job_abort(void *prv)
484 {
485 struct g2d_ctx *ctx = prv;
486 struct g2d_dev *dev = ctx->dev;
487
488 if (dev->curr == NULL) /* No job currently running */
489 return;
490
491 wait_event_timeout(dev->irq_queue,
492 dev->curr == NULL,
493 msecs_to_jiffies(G2D_TIMEOUT));
494 }
495
device_run(void * prv)496 static void device_run(void *prv)
497 {
498 struct g2d_ctx *ctx = prv;
499 struct g2d_dev *dev = ctx->dev;
500 struct vb2_buffer *src, *dst;
501 unsigned long flags;
502 u32 cmd = 0;
503
504 dev->curr = ctx;
505
506 src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
507 dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
508
509 clk_enable(dev->gate);
510 g2d_reset(dev);
511
512 spin_lock_irqsave(&dev->ctrl_lock, flags);
513
514 g2d_set_src_size(dev, &ctx->in);
515 g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
516
517 g2d_set_dst_size(dev, &ctx->out);
518 g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
519
520 g2d_set_rop4(dev, ctx->rop);
521 g2d_set_flip(dev, ctx->flip);
522
523 if (ctx->in.c_width != ctx->out.c_width ||
524 ctx->in.c_height != ctx->out.c_height) {
525 if (dev->variant->hw_rev == TYPE_G2D_3X)
526 cmd |= CMD_V3_ENABLE_STRETCH;
527 else
528 g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
529 }
530
531 g2d_set_cmd(dev, cmd);
532 g2d_start(dev);
533
534 spin_unlock_irqrestore(&dev->ctrl_lock, flags);
535 }
536
g2d_isr(int irq,void * prv)537 static irqreturn_t g2d_isr(int irq, void *prv)
538 {
539 struct g2d_dev *dev = prv;
540 struct g2d_ctx *ctx = dev->curr;
541 struct vb2_v4l2_buffer *src, *dst;
542
543 g2d_clear_int(dev);
544 clk_disable(dev->gate);
545
546 BUG_ON(ctx == NULL);
547
548 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
549 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
550
551 BUG_ON(src == NULL);
552 BUG_ON(dst == NULL);
553
554 dst->timecode = src->timecode;
555 dst->timestamp = src->timestamp;
556 dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
557 dst->flags |=
558 src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
559
560 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
561 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
562 v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
563
564 dev->curr = NULL;
565 wake_up(&dev->irq_queue);
566 return IRQ_HANDLED;
567 }
568
569 static const struct v4l2_file_operations g2d_fops = {
570 .owner = THIS_MODULE,
571 .open = g2d_open,
572 .release = g2d_release,
573 .poll = v4l2_m2m_fop_poll,
574 .unlocked_ioctl = video_ioctl2,
575 .mmap = v4l2_m2m_fop_mmap,
576 };
577
578 static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
579 .vidioc_querycap = vidioc_querycap,
580
581 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
582 .vidioc_g_fmt_vid_cap = vidioc_g_fmt,
583 .vidioc_try_fmt_vid_cap = vidioc_try_fmt,
584 .vidioc_s_fmt_vid_cap = vidioc_s_fmt,
585
586 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
587 .vidioc_g_fmt_vid_out = vidioc_g_fmt,
588 .vidioc_try_fmt_vid_out = vidioc_try_fmt,
589 .vidioc_s_fmt_vid_out = vidioc_s_fmt,
590
591 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
592 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
593 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
594 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
595
596 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
597 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
598
599 .vidioc_g_crop = vidioc_g_crop,
600 .vidioc_s_crop = vidioc_s_crop,
601 .vidioc_cropcap = vidioc_cropcap,
602 };
603
604 static struct video_device g2d_videodev = {
605 .name = G2D_NAME,
606 .fops = &g2d_fops,
607 .ioctl_ops = &g2d_ioctl_ops,
608 .minor = -1,
609 .release = video_device_release,
610 .vfl_dir = VFL_DIR_M2M,
611 };
612
613 static struct v4l2_m2m_ops g2d_m2m_ops = {
614 .device_run = device_run,
615 .job_abort = job_abort,
616 };
617
618 static const struct of_device_id exynos_g2d_match[];
619
g2d_probe(struct platform_device * pdev)620 static int g2d_probe(struct platform_device *pdev)
621 {
622 struct g2d_dev *dev;
623 struct video_device *vfd;
624 struct resource *res;
625 const struct of_device_id *of_id;
626 int ret = 0;
627
628 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
629 if (!dev)
630 return -ENOMEM;
631
632 spin_lock_init(&dev->ctrl_lock);
633 mutex_init(&dev->mutex);
634 atomic_set(&dev->num_inst, 0);
635 init_waitqueue_head(&dev->irq_queue);
636
637 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
638
639 dev->regs = devm_ioremap_resource(&pdev->dev, res);
640 if (IS_ERR(dev->regs))
641 return PTR_ERR(dev->regs);
642
643 dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
644 if (IS_ERR(dev->clk)) {
645 dev_err(&pdev->dev, "failed to get g2d clock\n");
646 return -ENXIO;
647 }
648
649 ret = clk_prepare(dev->clk);
650 if (ret) {
651 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
652 goto put_clk;
653 }
654
655 dev->gate = clk_get(&pdev->dev, "fimg2d");
656 if (IS_ERR(dev->gate)) {
657 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
658 ret = -ENXIO;
659 goto unprep_clk;
660 }
661
662 ret = clk_prepare(dev->gate);
663 if (ret) {
664 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
665 goto put_clk_gate;
666 }
667
668 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
669 if (!res) {
670 dev_err(&pdev->dev, "failed to find IRQ\n");
671 ret = -ENXIO;
672 goto unprep_clk_gate;
673 }
674
675 dev->irq = res->start;
676
677 ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
678 0, pdev->name, dev);
679 if (ret) {
680 dev_err(&pdev->dev, "failed to install IRQ\n");
681 goto put_clk_gate;
682 }
683
684 dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
685 if (IS_ERR(dev->alloc_ctx)) {
686 ret = PTR_ERR(dev->alloc_ctx);
687 goto unprep_clk_gate;
688 }
689
690 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
691 if (ret)
692 goto alloc_ctx_cleanup;
693 vfd = video_device_alloc();
694 if (!vfd) {
695 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
696 ret = -ENOMEM;
697 goto unreg_v4l2_dev;
698 }
699 *vfd = g2d_videodev;
700 vfd->lock = &dev->mutex;
701 vfd->v4l2_dev = &dev->v4l2_dev;
702 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
703 if (ret) {
704 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
705 goto rel_vdev;
706 }
707 video_set_drvdata(vfd, dev);
708 snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
709 dev->vfd = vfd;
710 v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
711 vfd->num);
712 platform_set_drvdata(pdev, dev);
713 dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
714 if (IS_ERR(dev->m2m_dev)) {
715 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
716 ret = PTR_ERR(dev->m2m_dev);
717 goto unreg_video_dev;
718 }
719
720 def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
721
722 if (!pdev->dev.of_node) {
723 dev->variant = g2d_get_drv_data(pdev);
724 } else {
725 of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
726 if (!of_id) {
727 ret = -ENODEV;
728 goto unreg_video_dev;
729 }
730 dev->variant = (struct g2d_variant *)of_id->data;
731 }
732
733 return 0;
734
735 unreg_video_dev:
736 video_unregister_device(dev->vfd);
737 rel_vdev:
738 video_device_release(vfd);
739 unreg_v4l2_dev:
740 v4l2_device_unregister(&dev->v4l2_dev);
741 alloc_ctx_cleanup:
742 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
743 unprep_clk_gate:
744 clk_unprepare(dev->gate);
745 put_clk_gate:
746 clk_put(dev->gate);
747 unprep_clk:
748 clk_unprepare(dev->clk);
749 put_clk:
750 clk_put(dev->clk);
751
752 return ret;
753 }
754
g2d_remove(struct platform_device * pdev)755 static int g2d_remove(struct platform_device *pdev)
756 {
757 struct g2d_dev *dev = platform_get_drvdata(pdev);
758
759 v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
760 v4l2_m2m_release(dev->m2m_dev);
761 video_unregister_device(dev->vfd);
762 v4l2_device_unregister(&dev->v4l2_dev);
763 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
764 clk_unprepare(dev->gate);
765 clk_put(dev->gate);
766 clk_unprepare(dev->clk);
767 clk_put(dev->clk);
768 return 0;
769 }
770
771 static struct g2d_variant g2d_drvdata_v3x = {
772 .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
773 };
774
775 static struct g2d_variant g2d_drvdata_v4x = {
776 .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
777 };
778
779 static const struct of_device_id exynos_g2d_match[] = {
780 {
781 .compatible = "samsung,s5pv210-g2d",
782 .data = &g2d_drvdata_v3x,
783 }, {
784 .compatible = "samsung,exynos4212-g2d",
785 .data = &g2d_drvdata_v4x,
786 },
787 {},
788 };
789 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
790
791 static const struct platform_device_id g2d_driver_ids[] = {
792 {
793 .name = "s5p-g2d",
794 .driver_data = (unsigned long)&g2d_drvdata_v3x,
795 }, {
796 .name = "s5p-g2d-v4x",
797 .driver_data = (unsigned long)&g2d_drvdata_v4x,
798 },
799 {},
800 };
801 MODULE_DEVICE_TABLE(platform, g2d_driver_ids);
802
803 static struct platform_driver g2d_pdrv = {
804 .probe = g2d_probe,
805 .remove = g2d_remove,
806 .id_table = g2d_driver_ids,
807 .driver = {
808 .name = G2D_NAME,
809 .of_match_table = exynos_g2d_match,
810 },
811 };
812
813 module_platform_driver(g2d_pdrv);
814
815 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
816 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
817 MODULE_LICENSE("GPL");
818