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/version.h>
16 #include <linux/timer.h>
17 #include <linux/sched.h>
18 #include <linux/slab.h>
19 #include <linux/clk.h>
20 #include <linux/interrupt.h>
21 #include <linux/of.h>
22
23 #include <linux/platform_device.h>
24 #include <media/v4l2-mem2mem.h>
25 #include <media/v4l2-device.h>
26 #include <media/v4l2-ioctl.h>
27 #include <media/videobuf2-core.h>
28 #include <media/videobuf2-dma-contig.h>
29
30 #include "g2d.h"
31 #include "g2d-regs.h"
32
33 #define fh2ctx(__fh) container_of(__fh, struct g2d_ctx, fh)
34
35 static struct g2d_fmt formats[] = {
36 {
37 .name = "XRGB_8888",
38 .fourcc = V4L2_PIX_FMT_RGB32,
39 .depth = 32,
40 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_8888),
41 },
42 {
43 .name = "RGB_565",
44 .fourcc = V4L2_PIX_FMT_RGB565X,
45 .depth = 16,
46 .hw = COLOR_MODE(ORDER_XRGB, MODE_RGB_565),
47 },
48 {
49 .name = "XRGB_1555",
50 .fourcc = V4L2_PIX_FMT_RGB555X,
51 .depth = 16,
52 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_1555),
53 },
54 {
55 .name = "XRGB_4444",
56 .fourcc = V4L2_PIX_FMT_RGB444,
57 .depth = 16,
58 .hw = COLOR_MODE(ORDER_XRGB, MODE_XRGB_4444),
59 },
60 {
61 .name = "PACKED_RGB_888",
62 .fourcc = V4L2_PIX_FMT_RGB24,
63 .depth = 24,
64 .hw = COLOR_MODE(ORDER_XRGB, MODE_PACKED_RGB_888),
65 },
66 };
67 #define NUM_FORMATS ARRAY_SIZE(formats)
68
69 static struct g2d_frame def_frame = {
70 .width = DEFAULT_WIDTH,
71 .height = DEFAULT_HEIGHT,
72 .c_width = DEFAULT_WIDTH,
73 .c_height = DEFAULT_HEIGHT,
74 .o_width = 0,
75 .o_height = 0,
76 .fmt = &formats[0],
77 .right = DEFAULT_WIDTH,
78 .bottom = DEFAULT_HEIGHT,
79 };
80
find_fmt(struct v4l2_format * f)81 static struct g2d_fmt *find_fmt(struct v4l2_format *f)
82 {
83 unsigned int i;
84 for (i = 0; i < NUM_FORMATS; i++) {
85 if (formats[i].fourcc == f->fmt.pix.pixelformat)
86 return &formats[i];
87 }
88 return NULL;
89 }
90
91
get_frame(struct g2d_ctx * ctx,enum v4l2_buf_type type)92 static struct g2d_frame *get_frame(struct g2d_ctx *ctx,
93 enum v4l2_buf_type type)
94 {
95 switch (type) {
96 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
97 return &ctx->in;
98 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
99 return &ctx->out;
100 default:
101 return ERR_PTR(-EINVAL);
102 }
103 }
104
g2d_queue_setup(struct vb2_queue * vq,const struct v4l2_format * fmt,unsigned int * nbuffers,unsigned int * nplanes,unsigned int sizes[],void * alloc_ctxs[])105 static int g2d_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
106 unsigned int *nbuffers, unsigned int *nplanes,
107 unsigned int sizes[], void *alloc_ctxs[])
108 {
109 struct g2d_ctx *ctx = vb2_get_drv_priv(vq);
110 struct g2d_frame *f = get_frame(ctx, vq->type);
111
112 if (IS_ERR(f))
113 return PTR_ERR(f);
114
115 sizes[0] = f->size;
116 *nplanes = 1;
117 alloc_ctxs[0] = ctx->dev->alloc_ctx;
118
119 if (*nbuffers == 0)
120 *nbuffers = 1;
121
122 return 0;
123 }
124
g2d_buf_prepare(struct vb2_buffer * vb)125 static int g2d_buf_prepare(struct vb2_buffer *vb)
126 {
127 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
128 struct g2d_frame *f = get_frame(ctx, vb->vb2_queue->type);
129
130 if (IS_ERR(f))
131 return PTR_ERR(f);
132 vb2_set_plane_payload(vb, 0, f->size);
133 return 0;
134 }
135
g2d_buf_queue(struct vb2_buffer * vb)136 static void g2d_buf_queue(struct vb2_buffer *vb)
137 {
138 struct g2d_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
139 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
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->version = KERNEL_VERSION(1, 0, 0);
301 /*
302 * This is only a mem-to-mem video device. The capture and output
303 * device capability flags are left only for backward compatibility
304 * and are scheduled for removal.
305 */
306 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
307 V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
308 return 0;
309 }
310
vidioc_enum_fmt(struct file * file,void * prv,struct v4l2_fmtdesc * f)311 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
312 {
313 struct g2d_fmt *fmt;
314 if (f->index >= NUM_FORMATS)
315 return -EINVAL;
316 fmt = &formats[f->index];
317 f->pixelformat = fmt->fourcc;
318 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
319 return 0;
320 }
321
vidioc_g_fmt(struct file * file,void * prv,struct v4l2_format * f)322 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
323 {
324 struct g2d_ctx *ctx = prv;
325 struct vb2_queue *vq;
326 struct g2d_frame *frm;
327
328 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
329 if (!vq)
330 return -EINVAL;
331 frm = get_frame(ctx, f->type);
332 if (IS_ERR(frm))
333 return PTR_ERR(frm);
334
335 f->fmt.pix.width = frm->width;
336 f->fmt.pix.height = frm->height;
337 f->fmt.pix.field = V4L2_FIELD_NONE;
338 f->fmt.pix.pixelformat = frm->fmt->fourcc;
339 f->fmt.pix.bytesperline = (frm->width * frm->fmt->depth) >> 3;
340 f->fmt.pix.sizeimage = frm->size;
341 return 0;
342 }
343
vidioc_try_fmt(struct file * file,void * prv,struct v4l2_format * f)344 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
345 {
346 struct g2d_fmt *fmt;
347 enum v4l2_field *field;
348
349 fmt = find_fmt(f);
350 if (!fmt)
351 return -EINVAL;
352
353 field = &f->fmt.pix.field;
354 if (*field == V4L2_FIELD_ANY)
355 *field = V4L2_FIELD_NONE;
356 else if (*field != V4L2_FIELD_NONE)
357 return -EINVAL;
358
359 if (f->fmt.pix.width > MAX_WIDTH)
360 f->fmt.pix.width = MAX_WIDTH;
361 if (f->fmt.pix.height > MAX_HEIGHT)
362 f->fmt.pix.height = MAX_HEIGHT;
363
364 if (f->fmt.pix.width < 1)
365 f->fmt.pix.width = 1;
366 if (f->fmt.pix.height < 1)
367 f->fmt.pix.height = 1;
368
369 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
370 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
371 return 0;
372 }
373
vidioc_s_fmt(struct file * file,void * prv,struct v4l2_format * f)374 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
375 {
376 struct g2d_ctx *ctx = prv;
377 struct g2d_dev *dev = ctx->dev;
378 struct vb2_queue *vq;
379 struct g2d_frame *frm;
380 struct g2d_fmt *fmt;
381 int ret = 0;
382
383 /* Adjust all values accordingly to the hardware capabilities
384 * and chosen format. */
385 ret = vidioc_try_fmt(file, prv, f);
386 if (ret)
387 return ret;
388 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
389 if (vb2_is_busy(vq)) {
390 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
391 return -EBUSY;
392 }
393 frm = get_frame(ctx, f->type);
394 if (IS_ERR(frm))
395 return PTR_ERR(frm);
396 fmt = find_fmt(f);
397 if (!fmt)
398 return -EINVAL;
399 frm->width = f->fmt.pix.width;
400 frm->height = f->fmt.pix.height;
401 frm->size = f->fmt.pix.sizeimage;
402 /* Reset crop settings */
403 frm->o_width = 0;
404 frm->o_height = 0;
405 frm->c_width = frm->width;
406 frm->c_height = frm->height;
407 frm->right = frm->width;
408 frm->bottom = frm->height;
409 frm->fmt = fmt;
410 frm->stride = f->fmt.pix.bytesperline;
411 return 0;
412 }
413
vidioc_cropcap(struct file * file,void * priv,struct v4l2_cropcap * cr)414 static int vidioc_cropcap(struct file *file, void *priv,
415 struct v4l2_cropcap *cr)
416 {
417 struct g2d_ctx *ctx = priv;
418 struct g2d_frame *f;
419
420 f = get_frame(ctx, cr->type);
421 if (IS_ERR(f))
422 return PTR_ERR(f);
423
424 cr->bounds.left = 0;
425 cr->bounds.top = 0;
426 cr->bounds.width = f->width;
427 cr->bounds.height = f->height;
428 cr->defrect = cr->bounds;
429 return 0;
430 }
431
vidioc_g_crop(struct file * file,void * prv,struct v4l2_crop * cr)432 static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
433 {
434 struct g2d_ctx *ctx = prv;
435 struct g2d_frame *f;
436
437 f = get_frame(ctx, cr->type);
438 if (IS_ERR(f))
439 return PTR_ERR(f);
440
441 cr->c.left = f->o_height;
442 cr->c.top = f->o_width;
443 cr->c.width = f->c_width;
444 cr->c.height = f->c_height;
445 return 0;
446 }
447
vidioc_try_crop(struct file * file,void * prv,const struct v4l2_crop * cr)448 static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
449 {
450 struct g2d_ctx *ctx = prv;
451 struct g2d_dev *dev = ctx->dev;
452 struct g2d_frame *f;
453
454 f = get_frame(ctx, cr->type);
455 if (IS_ERR(f))
456 return PTR_ERR(f);
457
458 if (cr->c.top < 0 || cr->c.left < 0) {
459 v4l2_err(&dev->v4l2_dev,
460 "doesn't support negative values for top & left\n");
461 return -EINVAL;
462 }
463
464 return 0;
465 }
466
vidioc_s_crop(struct file * file,void * prv,const struct v4l2_crop * cr)467 static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
468 {
469 struct g2d_ctx *ctx = prv;
470 struct g2d_frame *f;
471 int ret;
472
473 ret = vidioc_try_crop(file, prv, cr);
474 if (ret)
475 return ret;
476 f = get_frame(ctx, cr->type);
477 if (IS_ERR(f))
478 return PTR_ERR(f);
479
480 f->c_width = cr->c.width;
481 f->c_height = cr->c.height;
482 f->o_width = cr->c.left;
483 f->o_height = cr->c.top;
484 f->bottom = f->o_height + f->c_height;
485 f->right = f->o_width + f->c_width;
486 return 0;
487 }
488
job_abort(void * prv)489 static void job_abort(void *prv)
490 {
491 struct g2d_ctx *ctx = prv;
492 struct g2d_dev *dev = ctx->dev;
493
494 if (dev->curr == NULL) /* No job currently running */
495 return;
496
497 wait_event_timeout(dev->irq_queue,
498 dev->curr == NULL,
499 msecs_to_jiffies(G2D_TIMEOUT));
500 }
501
device_run(void * prv)502 static void device_run(void *prv)
503 {
504 struct g2d_ctx *ctx = prv;
505 struct g2d_dev *dev = ctx->dev;
506 struct vb2_buffer *src, *dst;
507 unsigned long flags;
508 u32 cmd = 0;
509
510 dev->curr = ctx;
511
512 src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
513 dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
514
515 clk_enable(dev->gate);
516 g2d_reset(dev);
517
518 spin_lock_irqsave(&dev->ctrl_lock, flags);
519
520 g2d_set_src_size(dev, &ctx->in);
521 g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
522
523 g2d_set_dst_size(dev, &ctx->out);
524 g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
525
526 g2d_set_rop4(dev, ctx->rop);
527 g2d_set_flip(dev, ctx->flip);
528
529 if (ctx->in.c_width != ctx->out.c_width ||
530 ctx->in.c_height != ctx->out.c_height) {
531 if (dev->variant->hw_rev == TYPE_G2D_3X)
532 cmd |= CMD_V3_ENABLE_STRETCH;
533 else
534 g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
535 }
536
537 g2d_set_cmd(dev, cmd);
538 g2d_start(dev);
539
540 spin_unlock_irqrestore(&dev->ctrl_lock, flags);
541 }
542
g2d_isr(int irq,void * prv)543 static irqreturn_t g2d_isr(int irq, void *prv)
544 {
545 struct g2d_dev *dev = prv;
546 struct g2d_ctx *ctx = dev->curr;
547 struct vb2_buffer *src, *dst;
548
549 g2d_clear_int(dev);
550 clk_disable(dev->gate);
551
552 BUG_ON(ctx == NULL);
553
554 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
555 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
556
557 BUG_ON(src == NULL);
558 BUG_ON(dst == NULL);
559
560 dst->v4l2_buf.timecode = src->v4l2_buf.timecode;
561 dst->v4l2_buf.timestamp = src->v4l2_buf.timestamp;
562 dst->v4l2_buf.flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
563 dst->v4l2_buf.flags |=
564 src->v4l2_buf.flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
565
566 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
567 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
568 v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
569
570 dev->curr = NULL;
571 wake_up(&dev->irq_queue);
572 return IRQ_HANDLED;
573 }
574
575 static const struct v4l2_file_operations g2d_fops = {
576 .owner = THIS_MODULE,
577 .open = g2d_open,
578 .release = g2d_release,
579 .poll = v4l2_m2m_fop_poll,
580 .unlocked_ioctl = video_ioctl2,
581 .mmap = v4l2_m2m_fop_mmap,
582 };
583
584 static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
585 .vidioc_querycap = vidioc_querycap,
586
587 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
588 .vidioc_g_fmt_vid_cap = vidioc_g_fmt,
589 .vidioc_try_fmt_vid_cap = vidioc_try_fmt,
590 .vidioc_s_fmt_vid_cap = vidioc_s_fmt,
591
592 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
593 .vidioc_g_fmt_vid_out = vidioc_g_fmt,
594 .vidioc_try_fmt_vid_out = vidioc_try_fmt,
595 .vidioc_s_fmt_vid_out = vidioc_s_fmt,
596
597 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
598 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
599 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
600 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
601
602 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
603 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
604
605 .vidioc_g_crop = vidioc_g_crop,
606 .vidioc_s_crop = vidioc_s_crop,
607 .vidioc_cropcap = vidioc_cropcap,
608 };
609
610 static struct video_device g2d_videodev = {
611 .name = G2D_NAME,
612 .fops = &g2d_fops,
613 .ioctl_ops = &g2d_ioctl_ops,
614 .minor = -1,
615 .release = video_device_release,
616 .vfl_dir = VFL_DIR_M2M,
617 };
618
619 static struct v4l2_m2m_ops g2d_m2m_ops = {
620 .device_run = device_run,
621 .job_abort = job_abort,
622 };
623
624 static const struct of_device_id exynos_g2d_match[];
625
g2d_probe(struct platform_device * pdev)626 static int g2d_probe(struct platform_device *pdev)
627 {
628 struct g2d_dev *dev;
629 struct video_device *vfd;
630 struct resource *res;
631 const struct of_device_id *of_id;
632 int ret = 0;
633
634 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
635 if (!dev)
636 return -ENOMEM;
637
638 spin_lock_init(&dev->ctrl_lock);
639 mutex_init(&dev->mutex);
640 atomic_set(&dev->num_inst, 0);
641 init_waitqueue_head(&dev->irq_queue);
642
643 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
644
645 dev->regs = devm_ioremap_resource(&pdev->dev, res);
646 if (IS_ERR(dev->regs))
647 return PTR_ERR(dev->regs);
648
649 dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
650 if (IS_ERR(dev->clk)) {
651 dev_err(&pdev->dev, "failed to get g2d clock\n");
652 return -ENXIO;
653 }
654
655 ret = clk_prepare(dev->clk);
656 if (ret) {
657 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
658 goto put_clk;
659 }
660
661 dev->gate = clk_get(&pdev->dev, "fimg2d");
662 if (IS_ERR(dev->gate)) {
663 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
664 ret = -ENXIO;
665 goto unprep_clk;
666 }
667
668 ret = clk_prepare(dev->gate);
669 if (ret) {
670 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
671 goto put_clk_gate;
672 }
673
674 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
675 if (!res) {
676 dev_err(&pdev->dev, "failed to find IRQ\n");
677 ret = -ENXIO;
678 goto unprep_clk_gate;
679 }
680
681 dev->irq = res->start;
682
683 ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
684 0, pdev->name, dev);
685 if (ret) {
686 dev_err(&pdev->dev, "failed to install IRQ\n");
687 goto put_clk_gate;
688 }
689
690 dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
691 if (IS_ERR(dev->alloc_ctx)) {
692 ret = PTR_ERR(dev->alloc_ctx);
693 goto unprep_clk_gate;
694 }
695
696 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
697 if (ret)
698 goto alloc_ctx_cleanup;
699 vfd = video_device_alloc();
700 if (!vfd) {
701 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
702 ret = -ENOMEM;
703 goto unreg_v4l2_dev;
704 }
705 *vfd = g2d_videodev;
706 vfd->lock = &dev->mutex;
707 vfd->v4l2_dev = &dev->v4l2_dev;
708 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
709 if (ret) {
710 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
711 goto rel_vdev;
712 }
713 video_set_drvdata(vfd, dev);
714 snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
715 dev->vfd = vfd;
716 v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
717 vfd->num);
718 platform_set_drvdata(pdev, dev);
719 dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
720 if (IS_ERR(dev->m2m_dev)) {
721 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
722 ret = PTR_ERR(dev->m2m_dev);
723 goto unreg_video_dev;
724 }
725
726 def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
727
728 if (!pdev->dev.of_node) {
729 dev->variant = g2d_get_drv_data(pdev);
730 } else {
731 of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
732 if (!of_id) {
733 ret = -ENODEV;
734 goto unreg_video_dev;
735 }
736 dev->variant = (struct g2d_variant *)of_id->data;
737 }
738
739 return 0;
740
741 unreg_video_dev:
742 video_unregister_device(dev->vfd);
743 rel_vdev:
744 video_device_release(vfd);
745 unreg_v4l2_dev:
746 v4l2_device_unregister(&dev->v4l2_dev);
747 alloc_ctx_cleanup:
748 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
749 unprep_clk_gate:
750 clk_unprepare(dev->gate);
751 put_clk_gate:
752 clk_put(dev->gate);
753 unprep_clk:
754 clk_unprepare(dev->clk);
755 put_clk:
756 clk_put(dev->clk);
757
758 return ret;
759 }
760
g2d_remove(struct platform_device * pdev)761 static int g2d_remove(struct platform_device *pdev)
762 {
763 struct g2d_dev *dev = platform_get_drvdata(pdev);
764
765 v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
766 v4l2_m2m_release(dev->m2m_dev);
767 video_unregister_device(dev->vfd);
768 v4l2_device_unregister(&dev->v4l2_dev);
769 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
770 clk_unprepare(dev->gate);
771 clk_put(dev->gate);
772 clk_unprepare(dev->clk);
773 clk_put(dev->clk);
774 return 0;
775 }
776
777 static struct g2d_variant g2d_drvdata_v3x = {
778 .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
779 };
780
781 static struct g2d_variant g2d_drvdata_v4x = {
782 .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
783 };
784
785 static const struct of_device_id exynos_g2d_match[] = {
786 {
787 .compatible = "samsung,s5pv210-g2d",
788 .data = &g2d_drvdata_v3x,
789 }, {
790 .compatible = "samsung,exynos4212-g2d",
791 .data = &g2d_drvdata_v4x,
792 },
793 {},
794 };
795 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
796
797 static struct platform_device_id g2d_driver_ids[] = {
798 {
799 .name = "s5p-g2d",
800 .driver_data = (unsigned long)&g2d_drvdata_v3x,
801 }, {
802 .name = "s5p-g2d-v4x",
803 .driver_data = (unsigned long)&g2d_drvdata_v4x,
804 },
805 {},
806 };
807 MODULE_DEVICE_TABLE(platform, g2d_driver_ids);
808
809 static struct platform_driver g2d_pdrv = {
810 .probe = g2d_probe,
811 .remove = g2d_remove,
812 .id_table = g2d_driver_ids,
813 .driver = {
814 .name = G2D_NAME,
815 .owner = THIS_MODULE,
816 .of_match_table = exynos_g2d_match,
817 },
818 };
819
820 module_platform_driver(g2d_pdrv);
821
822 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
823 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
824 MODULE_LICENSE("GPL");
825