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,unsigned int * nbuffers,unsigned int * nplanes,unsigned int sizes[],struct device * alloc_devs[])104 static int g2d_queue_setup(struct vb2_queue *vq,
105 unsigned int *nbuffers, unsigned int *nplanes,
106 unsigned int sizes[], struct device *alloc_devs[])
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
117 if (*nbuffers == 0)
118 *nbuffers = 1;
119
120 return 0;
121 }
122
g2d_buf_prepare(struct vb2_buffer * vb)123 static int g2d_buf_prepare(struct vb2_buffer *vb)
124 {
125 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
126 struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
127
128 if (IS_ERR(f))
129 return PTR_ERR(f);
130 vb2_set_plane_payload(vb, 0, f->size);
131 return 0;
132 }
133
g2d_buf_queue(struct vb2_buffer * vb)134 static void g2d_buf_queue(struct vb2_buffer *vb)
135 {
136 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
137 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
138 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
139 }
140
141 static const 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
queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)147 static 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 src_vq->dev = ctx->dev->v4l2_dev.dev;
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 dst_vq->dev = ctx->dev->v4l2_dev.dev;
176
177 return vb2_queue_init(dst_vq);
178 }
179
g2d_s_ctrl(struct v4l2_ctrl * ctrl)180 static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
181 {
182 struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
183 ctrl_handler);
184 unsigned long flags;
185
186 spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
187 switch (ctrl->id) {
188 case V4L2_CID_COLORFX:
189 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
190 ctx->rop = ROP4_INVERT;
191 else
192 ctx->rop = ROP4_COPY;
193 break;
194
195 case V4L2_CID_HFLIP:
196 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
197 break;
198
199 }
200 spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
201 return 0;
202 }
203
204 static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
205 .s_ctrl = g2d_s_ctrl,
206 };
207
g2d_setup_ctrls(struct g2d_ctx * ctx)208 static int g2d_setup_ctrls(struct g2d_ctx *ctx)
209 {
210 struct g2d_dev *dev = ctx->dev;
211
212 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
213
214 ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
215 V4L2_CID_HFLIP, 0, 1, 1, 0);
216
217 ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
218 V4L2_CID_VFLIP, 0, 1, 1, 0);
219
220 v4l2_ctrl_new_std_menu(
221 &ctx->ctrl_handler,
222 &g2d_ctrl_ops,
223 V4L2_CID_COLORFX,
224 V4L2_COLORFX_NEGATIVE,
225 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
226 V4L2_COLORFX_NONE);
227
228 if (ctx->ctrl_handler.error) {
229 int err = ctx->ctrl_handler.error;
230 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
231 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
232 return err;
233 }
234
235 v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
236
237 return 0;
238 }
239
g2d_open(struct file * file)240 static int g2d_open(struct file *file)
241 {
242 struct g2d_dev *dev = video_drvdata(file);
243 struct g2d_ctx *ctx = NULL;
244 int ret = 0;
245
246 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
247 if (!ctx)
248 return -ENOMEM;
249 ctx->dev = dev;
250 /* Set default formats */
251 ctx->in = def_frame;
252 ctx->out = def_frame;
253
254 if (mutex_lock_interruptible(&dev->mutex)) {
255 kfree(ctx);
256 return -ERESTARTSYS;
257 }
258 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
259 if (IS_ERR(ctx->fh.m2m_ctx)) {
260 ret = PTR_ERR(ctx->fh.m2m_ctx);
261 mutex_unlock(&dev->mutex);
262 kfree(ctx);
263 return ret;
264 }
265 v4l2_fh_init(&ctx->fh, video_devdata(file));
266 file->private_data = &ctx->fh;
267 v4l2_fh_add(&ctx->fh);
268
269 g2d_setup_ctrls(ctx);
270
271 /* Write the default values to the ctx struct */
272 v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
273
274 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
275 mutex_unlock(&dev->mutex);
276
277 v4l2_info(&dev->v4l2_dev, "instance opened\n");
278 return 0;
279 }
280
g2d_release(struct file * file)281 static int g2d_release(struct file *file)
282 {
283 struct g2d_dev *dev = video_drvdata(file);
284 struct g2d_ctx *ctx = fh2ctx(file->private_data);
285
286 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
287 v4l2_fh_del(&ctx->fh);
288 v4l2_fh_exit(&ctx->fh);
289 kfree(ctx);
290 v4l2_info(&dev->v4l2_dev, "instance closed\n");
291 return 0;
292 }
293
294
vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * cap)295 static int vidioc_querycap(struct file *file, void *priv,
296 struct v4l2_capability *cap)
297 {
298 strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
299 strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
300 cap->bus_info[0] = 0;
301 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
302 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
303 return 0;
304 }
305
vidioc_enum_fmt(struct file * file,void * prv,struct v4l2_fmtdesc * f)306 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
307 {
308 struct g2d_fmt *fmt;
309 if (f->index >= NUM_FORMATS)
310 return -EINVAL;
311 fmt = &formats[f->index];
312 f->pixelformat = fmt->fourcc;
313 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
314 return 0;
315 }
316
vidioc_g_fmt(struct file * file,void * prv,struct v4l2_format * f)317 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
318 {
319 struct g2d_ctx *ctx = prv;
320 struct vb2_queue *vq;
321 struct g2d_frame *frm;
322
323 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
324 if (!vq)
325 return -EINVAL;
326 frm = get_frame(ctx, f->type);
327 if (IS_ERR(frm))
328 return PTR_ERR(frm);
329
330 f->fmt.pix.width = frm->width;
331 f->fmt.pix.height = frm->height;
332 f->fmt.pix.field = V4L2_FIELD_NONE;
333 f->fmt.pix.pixelformat = frm->fmt->fourcc;
334 f->fmt.pix.bytesperline = (frm->width * frm->fmt->depth) >> 3;
335 f->fmt.pix.sizeimage = frm->size;
336 return 0;
337 }
338
vidioc_try_fmt(struct file * file,void * prv,struct v4l2_format * f)339 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
340 {
341 struct g2d_fmt *fmt;
342 enum v4l2_field *field;
343
344 fmt = find_fmt(f);
345 if (!fmt)
346 return -EINVAL;
347
348 field = &f->fmt.pix.field;
349 if (*field == V4L2_FIELD_ANY)
350 *field = V4L2_FIELD_NONE;
351 else if (*field != V4L2_FIELD_NONE)
352 return -EINVAL;
353
354 if (f->fmt.pix.width > MAX_WIDTH)
355 f->fmt.pix.width = MAX_WIDTH;
356 if (f->fmt.pix.height > MAX_HEIGHT)
357 f->fmt.pix.height = MAX_HEIGHT;
358
359 if (f->fmt.pix.width < 1)
360 f->fmt.pix.width = 1;
361 if (f->fmt.pix.height < 1)
362 f->fmt.pix.height = 1;
363
364 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
365 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
366 return 0;
367 }
368
vidioc_s_fmt(struct file * file,void * prv,struct v4l2_format * f)369 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
370 {
371 struct g2d_ctx *ctx = prv;
372 struct g2d_dev *dev = ctx->dev;
373 struct vb2_queue *vq;
374 struct g2d_frame *frm;
375 struct g2d_fmt *fmt;
376 int ret = 0;
377
378 /* Adjust all values accordingly to the hardware capabilities
379 * and chosen format. */
380 ret = vidioc_try_fmt(file, prv, f);
381 if (ret)
382 return ret;
383 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
384 if (vb2_is_busy(vq)) {
385 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
386 return -EBUSY;
387 }
388 frm = get_frame(ctx, f->type);
389 if (IS_ERR(frm))
390 return PTR_ERR(frm);
391 fmt = find_fmt(f);
392 if (!fmt)
393 return -EINVAL;
394 frm->width = f->fmt.pix.width;
395 frm->height = f->fmt.pix.height;
396 frm->size = f->fmt.pix.sizeimage;
397 /* Reset crop settings */
398 frm->o_width = 0;
399 frm->o_height = 0;
400 frm->c_width = frm->width;
401 frm->c_height = frm->height;
402 frm->right = frm->width;
403 frm->bottom = frm->height;
404 frm->fmt = fmt;
405 frm->stride = f->fmt.pix.bytesperline;
406 return 0;
407 }
408
vidioc_cropcap(struct file * file,void * priv,struct v4l2_cropcap * cr)409 static int vidioc_cropcap(struct file *file, void *priv,
410 struct v4l2_cropcap *cr)
411 {
412 struct g2d_ctx *ctx = priv;
413 struct g2d_frame *f;
414
415 f = get_frame(ctx, cr->type);
416 if (IS_ERR(f))
417 return PTR_ERR(f);
418
419 cr->bounds.left = 0;
420 cr->bounds.top = 0;
421 cr->bounds.width = f->width;
422 cr->bounds.height = f->height;
423 cr->defrect = cr->bounds;
424 return 0;
425 }
426
vidioc_g_crop(struct file * file,void * prv,struct v4l2_crop * cr)427 static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
428 {
429 struct g2d_ctx *ctx = prv;
430 struct g2d_frame *f;
431
432 f = get_frame(ctx, cr->type);
433 if (IS_ERR(f))
434 return PTR_ERR(f);
435
436 cr->c.left = f->o_height;
437 cr->c.top = f->o_width;
438 cr->c.width = f->c_width;
439 cr->c.height = f->c_height;
440 return 0;
441 }
442
vidioc_try_crop(struct file * file,void * prv,const struct v4l2_crop * cr)443 static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
444 {
445 struct g2d_ctx *ctx = prv;
446 struct g2d_dev *dev = ctx->dev;
447 struct g2d_frame *f;
448
449 f = get_frame(ctx, cr->type);
450 if (IS_ERR(f))
451 return PTR_ERR(f);
452
453 if (cr->c.top < 0 || cr->c.left < 0) {
454 v4l2_err(&dev->v4l2_dev,
455 "doesn't support negative values for top & left\n");
456 return -EINVAL;
457 }
458
459 return 0;
460 }
461
vidioc_s_crop(struct file * file,void * prv,const struct v4l2_crop * cr)462 static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
463 {
464 struct g2d_ctx *ctx = prv;
465 struct g2d_frame *f;
466 int ret;
467
468 ret = vidioc_try_crop(file, prv, cr);
469 if (ret)
470 return ret;
471 f = get_frame(ctx, cr->type);
472 if (IS_ERR(f))
473 return PTR_ERR(f);
474
475 f->c_width = cr->c.width;
476 f->c_height = cr->c.height;
477 f->o_width = cr->c.left;
478 f->o_height = cr->c.top;
479 f->bottom = f->o_height + f->c_height;
480 f->right = f->o_width + f->c_width;
481 return 0;
482 }
483
job_abort(void * prv)484 static void job_abort(void *prv)
485 {
486 struct g2d_ctx *ctx = prv;
487 struct g2d_dev *dev = ctx->dev;
488
489 if (dev->curr == NULL) /* No job currently running */
490 return;
491
492 wait_event_timeout(dev->irq_queue,
493 dev->curr == NULL,
494 msecs_to_jiffies(G2D_TIMEOUT));
495 }
496
device_run(void * prv)497 static void device_run(void *prv)
498 {
499 struct g2d_ctx *ctx = prv;
500 struct g2d_dev *dev = ctx->dev;
501 struct vb2_buffer *src, *dst;
502 unsigned long flags;
503 u32 cmd = 0;
504
505 dev->curr = ctx;
506
507 src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
508 dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
509
510 clk_enable(dev->gate);
511 g2d_reset(dev);
512
513 spin_lock_irqsave(&dev->ctrl_lock, flags);
514
515 g2d_set_src_size(dev, &ctx->in);
516 g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
517
518 g2d_set_dst_size(dev, &ctx->out);
519 g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
520
521 g2d_set_rop4(dev, ctx->rop);
522 g2d_set_flip(dev, ctx->flip);
523
524 if (ctx->in.c_width != ctx->out.c_width ||
525 ctx->in.c_height != ctx->out.c_height) {
526 if (dev->variant->hw_rev == TYPE_G2D_3X)
527 cmd |= CMD_V3_ENABLE_STRETCH;
528 else
529 g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
530 }
531
532 g2d_set_cmd(dev, cmd);
533 g2d_start(dev);
534
535 spin_unlock_irqrestore(&dev->ctrl_lock, flags);
536 }
537
g2d_isr(int irq,void * prv)538 static irqreturn_t g2d_isr(int irq, void *prv)
539 {
540 struct g2d_dev *dev = prv;
541 struct g2d_ctx *ctx = dev->curr;
542 struct vb2_v4l2_buffer *src, *dst;
543
544 g2d_clear_int(dev);
545 clk_disable(dev->gate);
546
547 BUG_ON(ctx == NULL);
548
549 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
550 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
551
552 BUG_ON(src == NULL);
553 BUG_ON(dst == NULL);
554
555 dst->timecode = src->timecode;
556 dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
557 dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
558 dst->flags |=
559 src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
560
561 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
562 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
563 v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
564
565 dev->curr = NULL;
566 wake_up(&dev->irq_queue);
567 return IRQ_HANDLED;
568 }
569
570 static const struct v4l2_file_operations g2d_fops = {
571 .owner = THIS_MODULE,
572 .open = g2d_open,
573 .release = g2d_release,
574 .poll = v4l2_m2m_fop_poll,
575 .unlocked_ioctl = video_ioctl2,
576 .mmap = v4l2_m2m_fop_mmap,
577 };
578
579 static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
580 .vidioc_querycap = vidioc_querycap,
581
582 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
583 .vidioc_g_fmt_vid_cap = vidioc_g_fmt,
584 .vidioc_try_fmt_vid_cap = vidioc_try_fmt,
585 .vidioc_s_fmt_vid_cap = vidioc_s_fmt,
586
587 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
588 .vidioc_g_fmt_vid_out = vidioc_g_fmt,
589 .vidioc_try_fmt_vid_out = vidioc_try_fmt,
590 .vidioc_s_fmt_vid_out = vidioc_s_fmt,
591
592 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
593 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
594 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
595 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
596
597 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
598 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
599
600 .vidioc_g_crop = vidioc_g_crop,
601 .vidioc_s_crop = vidioc_s_crop,
602 .vidioc_cropcap = vidioc_cropcap,
603 };
604
605 static struct video_device g2d_videodev = {
606 .name = G2D_NAME,
607 .fops = &g2d_fops,
608 .ioctl_ops = &g2d_ioctl_ops,
609 .minor = -1,
610 .release = video_device_release,
611 .vfl_dir = VFL_DIR_M2M,
612 };
613
614 static struct v4l2_m2m_ops g2d_m2m_ops = {
615 .device_run = device_run,
616 .job_abort = job_abort,
617 };
618
619 static const struct of_device_id exynos_g2d_match[];
620
g2d_probe(struct platform_device * pdev)621 static int g2d_probe(struct platform_device *pdev)
622 {
623 struct g2d_dev *dev;
624 struct video_device *vfd;
625 struct resource *res;
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 init_waitqueue_head(&dev->irq_queue);
637
638 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
639
640 dev->regs = devm_ioremap_resource(&pdev->dev, res);
641 if (IS_ERR(dev->regs))
642 return PTR_ERR(dev->regs);
643
644 dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
645 if (IS_ERR(dev->clk)) {
646 dev_err(&pdev->dev, "failed to get g2d clock\n");
647 return -ENXIO;
648 }
649
650 ret = clk_prepare(dev->clk);
651 if (ret) {
652 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
653 goto put_clk;
654 }
655
656 dev->gate = clk_get(&pdev->dev, "fimg2d");
657 if (IS_ERR(dev->gate)) {
658 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
659 ret = -ENXIO;
660 goto unprep_clk;
661 }
662
663 ret = clk_prepare(dev->gate);
664 if (ret) {
665 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
666 goto put_clk_gate;
667 }
668
669 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
670 if (!res) {
671 dev_err(&pdev->dev, "failed to find IRQ\n");
672 ret = -ENXIO;
673 goto unprep_clk_gate;
674 }
675
676 dev->irq = res->start;
677
678 ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
679 0, pdev->name, dev);
680 if (ret) {
681 dev_err(&pdev->dev, "failed to install IRQ\n");
682 goto put_clk_gate;
683 }
684
685 vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
686
687 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
688 if (ret)
689 goto unprep_clk_gate;
690 vfd = video_device_alloc();
691 if (!vfd) {
692 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
693 ret = -ENOMEM;
694 goto unreg_v4l2_dev;
695 }
696 *vfd = g2d_videodev;
697 vfd->lock = &dev->mutex;
698 vfd->v4l2_dev = &dev->v4l2_dev;
699 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
700 if (ret) {
701 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
702 goto rel_vdev;
703 }
704 video_set_drvdata(vfd, dev);
705 snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
706 dev->vfd = vfd;
707 v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
708 vfd->num);
709 platform_set_drvdata(pdev, dev);
710 dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
711 if (IS_ERR(dev->m2m_dev)) {
712 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
713 ret = PTR_ERR(dev->m2m_dev);
714 goto unreg_video_dev;
715 }
716
717 def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
718
719 of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
720 if (!of_id) {
721 ret = -ENODEV;
722 goto unreg_video_dev;
723 }
724 dev->variant = (struct g2d_variant *)of_id->data;
725
726 return 0;
727
728 unreg_video_dev:
729 video_unregister_device(dev->vfd);
730 rel_vdev:
731 video_device_release(vfd);
732 unreg_v4l2_dev:
733 v4l2_device_unregister(&dev->v4l2_dev);
734 unprep_clk_gate:
735 clk_unprepare(dev->gate);
736 put_clk_gate:
737 clk_put(dev->gate);
738 unprep_clk:
739 clk_unprepare(dev->clk);
740 put_clk:
741 clk_put(dev->clk);
742
743 return ret;
744 }
745
g2d_remove(struct platform_device * pdev)746 static int g2d_remove(struct platform_device *pdev)
747 {
748 struct g2d_dev *dev = platform_get_drvdata(pdev);
749
750 v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
751 v4l2_m2m_release(dev->m2m_dev);
752 video_unregister_device(dev->vfd);
753 v4l2_device_unregister(&dev->v4l2_dev);
754 vb2_dma_contig_clear_max_seg_size(&pdev->dev);
755 clk_unprepare(dev->gate);
756 clk_put(dev->gate);
757 clk_unprepare(dev->clk);
758 clk_put(dev->clk);
759 return 0;
760 }
761
762 static struct g2d_variant g2d_drvdata_v3x = {
763 .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
764 };
765
766 static struct g2d_variant g2d_drvdata_v4x = {
767 .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
768 };
769
770 static const struct of_device_id exynos_g2d_match[] = {
771 {
772 .compatible = "samsung,s5pv210-g2d",
773 .data = &g2d_drvdata_v3x,
774 }, {
775 .compatible = "samsung,exynos4212-g2d",
776 .data = &g2d_drvdata_v4x,
777 },
778 {},
779 };
780 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
781
782 static struct platform_driver g2d_pdrv = {
783 .probe = g2d_probe,
784 .remove = g2d_remove,
785 .driver = {
786 .name = G2D_NAME,
787 .of_match_table = exynos_g2d_match,
788 },
789 };
790
791 module_platform_driver(g2d_pdrv);
792
793 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
794 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
795 MODULE_LICENSE("GPL");
796