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 .wait_prepare = vb2_ops_wait_prepare,
146 .wait_finish = vb2_ops_wait_finish,
147 };
148
queue_init(void * priv,struct vb2_queue * src_vq,struct vb2_queue * dst_vq)149 static int queue_init(void *priv, struct vb2_queue *src_vq,
150 struct vb2_queue *dst_vq)
151 {
152 struct g2d_ctx *ctx = priv;
153 int ret;
154
155 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
156 src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
157 src_vq->drv_priv = ctx;
158 src_vq->ops = &g2d_qops;
159 src_vq->mem_ops = &vb2_dma_contig_memops;
160 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
161 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
162 src_vq->lock = &ctx->dev->mutex;
163 src_vq->dev = ctx->dev->v4l2_dev.dev;
164
165 ret = vb2_queue_init(src_vq);
166 if (ret)
167 return ret;
168
169 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
170 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
171 dst_vq->drv_priv = ctx;
172 dst_vq->ops = &g2d_qops;
173 dst_vq->mem_ops = &vb2_dma_contig_memops;
174 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
175 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
176 dst_vq->lock = &ctx->dev->mutex;
177 dst_vq->dev = ctx->dev->v4l2_dev.dev;
178
179 return vb2_queue_init(dst_vq);
180 }
181
g2d_s_ctrl(struct v4l2_ctrl * ctrl)182 static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
183 {
184 struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
185 ctrl_handler);
186 unsigned long flags;
187
188 spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
189 switch (ctrl->id) {
190 case V4L2_CID_COLORFX:
191 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
192 ctx->rop = ROP4_INVERT;
193 else
194 ctx->rop = ROP4_COPY;
195 break;
196
197 case V4L2_CID_HFLIP:
198 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
199 break;
200
201 }
202 spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
203 return 0;
204 }
205
206 static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
207 .s_ctrl = g2d_s_ctrl,
208 };
209
g2d_setup_ctrls(struct g2d_ctx * ctx)210 static int g2d_setup_ctrls(struct g2d_ctx *ctx)
211 {
212 struct g2d_dev *dev = ctx->dev;
213
214 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
215
216 ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
217 V4L2_CID_HFLIP, 0, 1, 1, 0);
218
219 ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
220 V4L2_CID_VFLIP, 0, 1, 1, 0);
221
222 v4l2_ctrl_new_std_menu(
223 &ctx->ctrl_handler,
224 &g2d_ctrl_ops,
225 V4L2_CID_COLORFX,
226 V4L2_COLORFX_NEGATIVE,
227 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
228 V4L2_COLORFX_NONE);
229
230 if (ctx->ctrl_handler.error) {
231 int err = ctx->ctrl_handler.error;
232 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
233 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
234 return err;
235 }
236
237 v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
238
239 return 0;
240 }
241
g2d_open(struct file * file)242 static int g2d_open(struct file *file)
243 {
244 struct g2d_dev *dev = video_drvdata(file);
245 struct g2d_ctx *ctx = NULL;
246 int ret = 0;
247
248 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
249 if (!ctx)
250 return -ENOMEM;
251 ctx->dev = dev;
252 /* Set default formats */
253 ctx->in = def_frame;
254 ctx->out = def_frame;
255
256 if (mutex_lock_interruptible(&dev->mutex)) {
257 kfree(ctx);
258 return -ERESTARTSYS;
259 }
260 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
261 if (IS_ERR(ctx->fh.m2m_ctx)) {
262 ret = PTR_ERR(ctx->fh.m2m_ctx);
263 mutex_unlock(&dev->mutex);
264 kfree(ctx);
265 return ret;
266 }
267 v4l2_fh_init(&ctx->fh, video_devdata(file));
268 file->private_data = &ctx->fh;
269 v4l2_fh_add(&ctx->fh);
270
271 g2d_setup_ctrls(ctx);
272
273 /* Write the default values to the ctx struct */
274 v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
275
276 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
277 mutex_unlock(&dev->mutex);
278
279 v4l2_info(&dev->v4l2_dev, "instance opened\n");
280 return 0;
281 }
282
g2d_release(struct file * file)283 static int g2d_release(struct file *file)
284 {
285 struct g2d_dev *dev = video_drvdata(file);
286 struct g2d_ctx *ctx = fh2ctx(file->private_data);
287
288 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
289 v4l2_fh_del(&ctx->fh);
290 v4l2_fh_exit(&ctx->fh);
291 kfree(ctx);
292 v4l2_info(&dev->v4l2_dev, "instance closed\n");
293 return 0;
294 }
295
296
vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * cap)297 static int vidioc_querycap(struct file *file, void *priv,
298 struct v4l2_capability *cap)
299 {
300 strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
301 strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
302 cap->bus_info[0] = 0;
303 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
304 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
305 return 0;
306 }
307
vidioc_enum_fmt(struct file * file,void * prv,struct v4l2_fmtdesc * f)308 static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
309 {
310 struct g2d_fmt *fmt;
311 if (f->index >= NUM_FORMATS)
312 return -EINVAL;
313 fmt = &formats[f->index];
314 f->pixelformat = fmt->fourcc;
315 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
316 return 0;
317 }
318
vidioc_g_fmt(struct file * file,void * prv,struct v4l2_format * f)319 static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
320 {
321 struct g2d_ctx *ctx = prv;
322 struct vb2_queue *vq;
323 struct g2d_frame *frm;
324
325 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
326 if (!vq)
327 return -EINVAL;
328 frm = get_frame(ctx, f->type);
329 if (IS_ERR(frm))
330 return PTR_ERR(frm);
331
332 f->fmt.pix.width = frm->width;
333 f->fmt.pix.height = frm->height;
334 f->fmt.pix.field = V4L2_FIELD_NONE;
335 f->fmt.pix.pixelformat = frm->fmt->fourcc;
336 f->fmt.pix.bytesperline = (frm->width * frm->fmt->depth) >> 3;
337 f->fmt.pix.sizeimage = frm->size;
338 return 0;
339 }
340
vidioc_try_fmt(struct file * file,void * prv,struct v4l2_format * f)341 static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
342 {
343 struct g2d_fmt *fmt;
344 enum v4l2_field *field;
345
346 fmt = find_fmt(f);
347 if (!fmt)
348 return -EINVAL;
349
350 field = &f->fmt.pix.field;
351 if (*field == V4L2_FIELD_ANY)
352 *field = V4L2_FIELD_NONE;
353 else if (*field != V4L2_FIELD_NONE)
354 return -EINVAL;
355
356 if (f->fmt.pix.width > MAX_WIDTH)
357 f->fmt.pix.width = MAX_WIDTH;
358 if (f->fmt.pix.height > MAX_HEIGHT)
359 f->fmt.pix.height = MAX_HEIGHT;
360
361 if (f->fmt.pix.width < 1)
362 f->fmt.pix.width = 1;
363 if (f->fmt.pix.height < 1)
364 f->fmt.pix.height = 1;
365
366 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
367 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
368 return 0;
369 }
370
vidioc_s_fmt(struct file * file,void * prv,struct v4l2_format * f)371 static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
372 {
373 struct g2d_ctx *ctx = prv;
374 struct g2d_dev *dev = ctx->dev;
375 struct vb2_queue *vq;
376 struct g2d_frame *frm;
377 struct g2d_fmt *fmt;
378 int ret = 0;
379
380 /* Adjust all values accordingly to the hardware capabilities
381 * and chosen format. */
382 ret = vidioc_try_fmt(file, prv, f);
383 if (ret)
384 return ret;
385 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
386 if (vb2_is_busy(vq)) {
387 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
388 return -EBUSY;
389 }
390 frm = get_frame(ctx, f->type);
391 if (IS_ERR(frm))
392 return PTR_ERR(frm);
393 fmt = find_fmt(f);
394 if (!fmt)
395 return -EINVAL;
396 frm->width = f->fmt.pix.width;
397 frm->height = f->fmt.pix.height;
398 frm->size = f->fmt.pix.sizeimage;
399 /* Reset crop settings */
400 frm->o_width = 0;
401 frm->o_height = 0;
402 frm->c_width = frm->width;
403 frm->c_height = frm->height;
404 frm->right = frm->width;
405 frm->bottom = frm->height;
406 frm->fmt = fmt;
407 frm->stride = f->fmt.pix.bytesperline;
408 return 0;
409 }
410
vidioc_cropcap(struct file * file,void * priv,struct v4l2_cropcap * cr)411 static int vidioc_cropcap(struct file *file, void *priv,
412 struct v4l2_cropcap *cr)
413 {
414 struct g2d_ctx *ctx = priv;
415 struct g2d_frame *f;
416
417 f = get_frame(ctx, cr->type);
418 if (IS_ERR(f))
419 return PTR_ERR(f);
420
421 cr->bounds.left = 0;
422 cr->bounds.top = 0;
423 cr->bounds.width = f->width;
424 cr->bounds.height = f->height;
425 cr->defrect = cr->bounds;
426 return 0;
427 }
428
vidioc_g_crop(struct file * file,void * prv,struct v4l2_crop * cr)429 static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
430 {
431 struct g2d_ctx *ctx = prv;
432 struct g2d_frame *f;
433
434 f = get_frame(ctx, cr->type);
435 if (IS_ERR(f))
436 return PTR_ERR(f);
437
438 cr->c.left = f->o_height;
439 cr->c.top = f->o_width;
440 cr->c.width = f->c_width;
441 cr->c.height = f->c_height;
442 return 0;
443 }
444
vidioc_try_crop(struct file * file,void * prv,const struct v4l2_crop * cr)445 static int vidioc_try_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
446 {
447 struct g2d_ctx *ctx = prv;
448 struct g2d_dev *dev = ctx->dev;
449 struct g2d_frame *f;
450
451 f = get_frame(ctx, cr->type);
452 if (IS_ERR(f))
453 return PTR_ERR(f);
454
455 if (cr->c.top < 0 || cr->c.left < 0) {
456 v4l2_err(&dev->v4l2_dev,
457 "doesn't support negative values for top & left\n");
458 return -EINVAL;
459 }
460
461 return 0;
462 }
463
vidioc_s_crop(struct file * file,void * prv,const struct v4l2_crop * cr)464 static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *cr)
465 {
466 struct g2d_ctx *ctx = prv;
467 struct g2d_frame *f;
468 int ret;
469
470 ret = vidioc_try_crop(file, prv, cr);
471 if (ret)
472 return ret;
473 f = get_frame(ctx, cr->type);
474 if (IS_ERR(f))
475 return PTR_ERR(f);
476
477 f->c_width = cr->c.width;
478 f->c_height = cr->c.height;
479 f->o_width = cr->c.left;
480 f->o_height = cr->c.top;
481 f->bottom = f->o_height + f->c_height;
482 f->right = f->o_width + f->c_width;
483 return 0;
484 }
485
device_run(void * prv)486 static void device_run(void *prv)
487 {
488 struct g2d_ctx *ctx = prv;
489 struct g2d_dev *dev = ctx->dev;
490 struct vb2_v4l2_buffer *src, *dst;
491 unsigned long flags;
492 u32 cmd = 0;
493
494 dev->curr = ctx;
495
496 src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
497 dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
498
499 clk_enable(dev->gate);
500 g2d_reset(dev);
501
502 spin_lock_irqsave(&dev->ctrl_lock, flags);
503
504 g2d_set_src_size(dev, &ctx->in);
505 g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(&src->vb2_buf, 0));
506
507 g2d_set_dst_size(dev, &ctx->out);
508 g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(&dst->vb2_buf, 0));
509
510 g2d_set_rop4(dev, ctx->rop);
511 g2d_set_flip(dev, ctx->flip);
512
513 if (ctx->in.c_width != ctx->out.c_width ||
514 ctx->in.c_height != ctx->out.c_height) {
515 if (dev->variant->hw_rev == TYPE_G2D_3X)
516 cmd |= CMD_V3_ENABLE_STRETCH;
517 else
518 g2d_set_v41_stretch(dev, &ctx->in, &ctx->out);
519 }
520
521 g2d_set_cmd(dev, cmd);
522 g2d_start(dev);
523
524 spin_unlock_irqrestore(&dev->ctrl_lock, flags);
525 }
526
g2d_isr(int irq,void * prv)527 static irqreturn_t g2d_isr(int irq, void *prv)
528 {
529 struct g2d_dev *dev = prv;
530 struct g2d_ctx *ctx = dev->curr;
531 struct vb2_v4l2_buffer *src, *dst;
532
533 g2d_clear_int(dev);
534 clk_disable(dev->gate);
535
536 BUG_ON(ctx == NULL);
537
538 src = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
539 dst = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
540
541 BUG_ON(src == NULL);
542 BUG_ON(dst == NULL);
543
544 dst->timecode = src->timecode;
545 dst->vb2_buf.timestamp = src->vb2_buf.timestamp;
546 dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
547 dst->flags |=
548 src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
549
550 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
551 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
552 v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
553
554 dev->curr = NULL;
555 return IRQ_HANDLED;
556 }
557
558 static const struct v4l2_file_operations g2d_fops = {
559 .owner = THIS_MODULE,
560 .open = g2d_open,
561 .release = g2d_release,
562 .poll = v4l2_m2m_fop_poll,
563 .unlocked_ioctl = video_ioctl2,
564 .mmap = v4l2_m2m_fop_mmap,
565 };
566
567 static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
568 .vidioc_querycap = vidioc_querycap,
569
570 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
571 .vidioc_g_fmt_vid_cap = vidioc_g_fmt,
572 .vidioc_try_fmt_vid_cap = vidioc_try_fmt,
573 .vidioc_s_fmt_vid_cap = vidioc_s_fmt,
574
575 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
576 .vidioc_g_fmt_vid_out = vidioc_g_fmt,
577 .vidioc_try_fmt_vid_out = vidioc_try_fmt,
578 .vidioc_s_fmt_vid_out = vidioc_s_fmt,
579
580 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
581 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
582 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
583 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
584
585 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
586 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
587
588 .vidioc_g_crop = vidioc_g_crop,
589 .vidioc_s_crop = vidioc_s_crop,
590 .vidioc_cropcap = vidioc_cropcap,
591 };
592
593 static const struct video_device g2d_videodev = {
594 .name = G2D_NAME,
595 .fops = &g2d_fops,
596 .ioctl_ops = &g2d_ioctl_ops,
597 .minor = -1,
598 .release = video_device_release,
599 .vfl_dir = VFL_DIR_M2M,
600 };
601
602 static const struct v4l2_m2m_ops g2d_m2m_ops = {
603 .device_run = device_run,
604 };
605
606 static const struct of_device_id exynos_g2d_match[];
607
g2d_probe(struct platform_device * pdev)608 static int g2d_probe(struct platform_device *pdev)
609 {
610 struct g2d_dev *dev;
611 struct video_device *vfd;
612 struct resource *res;
613 const struct of_device_id *of_id;
614 int ret = 0;
615
616 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
617 if (!dev)
618 return -ENOMEM;
619
620 spin_lock_init(&dev->ctrl_lock);
621 mutex_init(&dev->mutex);
622 atomic_set(&dev->num_inst, 0);
623
624 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
625
626 dev->regs = devm_ioremap_resource(&pdev->dev, res);
627 if (IS_ERR(dev->regs))
628 return PTR_ERR(dev->regs);
629
630 dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
631 if (IS_ERR(dev->clk)) {
632 dev_err(&pdev->dev, "failed to get g2d clock\n");
633 return -ENXIO;
634 }
635
636 ret = clk_prepare(dev->clk);
637 if (ret) {
638 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
639 goto put_clk;
640 }
641
642 dev->gate = clk_get(&pdev->dev, "fimg2d");
643 if (IS_ERR(dev->gate)) {
644 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
645 ret = -ENXIO;
646 goto unprep_clk;
647 }
648
649 ret = clk_prepare(dev->gate);
650 if (ret) {
651 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
652 goto put_clk_gate;
653 }
654
655 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
656 if (!res) {
657 dev_err(&pdev->dev, "failed to find IRQ\n");
658 ret = -ENXIO;
659 goto unprep_clk_gate;
660 }
661
662 dev->irq = res->start;
663
664 ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr,
665 0, pdev->name, dev);
666 if (ret) {
667 dev_err(&pdev->dev, "failed to install IRQ\n");
668 goto unprep_clk_gate;
669 }
670
671 vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
672
673 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
674 if (ret)
675 goto unprep_clk_gate;
676 vfd = video_device_alloc();
677 if (!vfd) {
678 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
679 ret = -ENOMEM;
680 goto unreg_v4l2_dev;
681 }
682 *vfd = g2d_videodev;
683 vfd->lock = &dev->mutex;
684 vfd->v4l2_dev = &dev->v4l2_dev;
685 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
686 if (ret) {
687 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
688 goto rel_vdev;
689 }
690 video_set_drvdata(vfd, dev);
691 dev->vfd = vfd;
692 v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
693 vfd->num);
694 platform_set_drvdata(pdev, dev);
695 dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
696 if (IS_ERR(dev->m2m_dev)) {
697 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
698 ret = PTR_ERR(dev->m2m_dev);
699 goto unreg_video_dev;
700 }
701
702 def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
703
704 of_id = of_match_node(exynos_g2d_match, pdev->dev.of_node);
705 if (!of_id) {
706 ret = -ENODEV;
707 goto unreg_video_dev;
708 }
709 dev->variant = (struct g2d_variant *)of_id->data;
710
711 return 0;
712
713 unreg_video_dev:
714 video_unregister_device(dev->vfd);
715 rel_vdev:
716 video_device_release(vfd);
717 unreg_v4l2_dev:
718 v4l2_device_unregister(&dev->v4l2_dev);
719 unprep_clk_gate:
720 clk_unprepare(dev->gate);
721 put_clk_gate:
722 clk_put(dev->gate);
723 unprep_clk:
724 clk_unprepare(dev->clk);
725 put_clk:
726 clk_put(dev->clk);
727
728 return ret;
729 }
730
g2d_remove(struct platform_device * pdev)731 static int g2d_remove(struct platform_device *pdev)
732 {
733 struct g2d_dev *dev = platform_get_drvdata(pdev);
734
735 v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
736 v4l2_m2m_release(dev->m2m_dev);
737 video_unregister_device(dev->vfd);
738 v4l2_device_unregister(&dev->v4l2_dev);
739 vb2_dma_contig_clear_max_seg_size(&pdev->dev);
740 clk_unprepare(dev->gate);
741 clk_put(dev->gate);
742 clk_unprepare(dev->clk);
743 clk_put(dev->clk);
744 return 0;
745 }
746
747 static struct g2d_variant g2d_drvdata_v3x = {
748 .hw_rev = TYPE_G2D_3X, /* Revision 3.0 for S5PV210 and Exynos4210 */
749 };
750
751 static struct g2d_variant g2d_drvdata_v4x = {
752 .hw_rev = TYPE_G2D_4X, /* Revision 4.1 for Exynos4X12 and Exynos5 */
753 };
754
755 static const struct of_device_id exynos_g2d_match[] = {
756 {
757 .compatible = "samsung,s5pv210-g2d",
758 .data = &g2d_drvdata_v3x,
759 }, {
760 .compatible = "samsung,exynos4212-g2d",
761 .data = &g2d_drvdata_v4x,
762 },
763 {},
764 };
765 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
766
767 static struct platform_driver g2d_pdrv = {
768 .probe = g2d_probe,
769 .remove = g2d_remove,
770 .driver = {
771 .name = G2D_NAME,
772 .of_match_table = exynos_g2d_match,
773 },
774 };
775
776 module_platform_driver(g2d_pdrv);
777
778 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
779 MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
780 MODULE_LICENSE("GPL");
781