projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[media] s5p-mfc: Add missing static storage class in s5p_mfc_enc.c file
[deliverable/linux.git] / drivers / media / video / s5p-g2d / g2d.c
CommitLineData
91884734
KD		 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
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
ec76afe8 68static struct g2d_frame def_frame = {
91884734
KD		 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
ec76afe8 80static struct g2d_fmt *find_fmt(struct v4l2_format *f)
91884734
KD		 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->m2m_ctx, vb);
139}
140
141
142static 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
148static 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 memset(src_vq, 0, sizeof(*src_vq));
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
162 ret = vb2_queue_init(src_vq);
163 if (ret)
164 return ret;
165
166 memset(dst_vq, 0, sizeof(*dst_vq));
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
174 return vb2_queue_init(dst_vq);
175}
176
177static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
178{
179 struct g2d_ctx *ctx = container_of(ctrl->handler, struct g2d_ctx,
180 ctrl_handler);
27dda973
KD		 181 unsigned long flags;
182
183 spin_lock_irqsave(&ctx->dev->ctrl_lock, flags);
91884734
KD		 184 switch (ctrl->id) {
185 case V4L2_CID_COLORFX:
186 if (ctrl->val == V4L2_COLORFX_NEGATIVE)
187 ctx->rop = ROP4_INVERT;
188 else
189 ctx->rop = ROP4_COPY;
7f6cce69 190 break;
d0d28326
SK		 191
192 case V4L2_CID_HFLIP:
193 ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
194 break;
195
91884734 196 }
27dda973 197 spin_unlock_irqrestore(&ctx->dev->ctrl_lock, flags);
91884734
KD		 198 return 0;
199}
200
201static const struct v4l2_ctrl_ops g2d_ctrl_ops = {
202 .s_ctrl = g2d_s_ctrl,
203};
204
ec76afe8 205static int g2d_setup_ctrls(struct g2d_ctx *ctx)
91884734
KD		 206{
207 struct g2d_dev *dev = ctx->dev;
208
d0d28326
SK		 209 v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
210
211 ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
212 V4L2_CID_HFLIP, 0, 1, 1, 0);
213
214 ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
215 V4L2_CID_VFLIP, 0, 1, 1, 0);
91884734
KD		 216
217 v4l2_ctrl_new_std_menu(
218 &ctx->ctrl_handler,
219 &g2d_ctrl_ops,
220 V4L2_CID_COLORFX,
221 V4L2_COLORFX_NEGATIVE,
222 ~((1 << V4L2_COLORFX_NONE) | (1 << V4L2_COLORFX_NEGATIVE)),
223 V4L2_COLORFX_NONE);
224
225 if (ctx->ctrl_handler.error) {
d0d28326
SK		 226 int err = ctx->ctrl_handler.error;
227 v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
228 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
229 return err;
91884734
KD		 230 }
231
d0d28326
SK		 232 v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
233
91884734
KD		 234 return 0;
235}
236
237static int g2d_open(struct file *file)
238{
239 struct g2d_dev *dev = video_drvdata(file);
240 struct g2d_ctx *ctx = NULL;
241 int ret = 0;
242
243 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
244 if (!ctx)
245 return -ENOMEM;
246 ctx->dev = dev;
247 /* Set default formats */
248 ctx->in = def_frame;
249 ctx->out = def_frame;
250
251 ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
252 if (IS_ERR(ctx->m2m_ctx)) {
253 ret = PTR_ERR(ctx->m2m_ctx);
254 kfree(ctx);
255 return ret;
256 }
257 v4l2_fh_init(&ctx->fh, video_devdata(file));
258 file->private_data = &ctx->fh;
259 v4l2_fh_add(&ctx->fh);
260
261 g2d_setup_ctrls(ctx);
262
263 /* Write the default values to the ctx struct */
264 v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
265
266 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
267
268 v4l2_info(&dev->v4l2_dev, "instance opened\n");
269 return 0;
270}
271
272static int g2d_release(struct file *file)
273{
274 struct g2d_dev *dev = video_drvdata(file);
275 struct g2d_ctx *ctx = fh2ctx(file->private_data);
276
277 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
278 v4l2_fh_del(&ctx->fh);
279 v4l2_fh_exit(&ctx->fh);
280 kfree(ctx);
281 v4l2_info(&dev->v4l2_dev, "instance closed\n");
282 return 0;
283}
284
285
286static int vidioc_querycap(struct file *file, void *priv,
287 struct v4l2_capability *cap)
288{
289 strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
290 strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
291 cap->bus_info[0] = 0;
292 cap->version = KERNEL_VERSION(1, 0, 0);
293 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT
294 | V4L2_CAP_STREAMING;
295 return 0;
296}
297
298static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
299{
300 struct g2d_fmt *fmt;
301 if (f->index >= NUM_FORMATS)
302 return -EINVAL;
303 fmt = &formats[f->index];
304 f->pixelformat = fmt->fourcc;
305 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
306 return 0;
307}
308
309static int vidioc_g_fmt(struct file *file, void *prv, struct v4l2_format *f)
310{
311 struct g2d_ctx *ctx = prv;
312 struct vb2_queue *vq;
313 struct g2d_frame *frm;
314
315 vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
316 if (!vq)
317 return -EINVAL;
318 frm = get_frame(ctx, f->type);
319 if (IS_ERR(frm))
320 return PTR_ERR(frm);
321
322 f->fmt.pix.width = frm->width;
323 f->fmt.pix.height = frm->height;
324 f->fmt.pix.field = V4L2_FIELD_NONE;
325 f->fmt.pix.pixelformat = frm->fmt->fourcc;
326 f->fmt.pix.bytesperline = (frm->width * frm->fmt->depth) >> 3;
327 f->fmt.pix.sizeimage = frm->size;
328 return 0;
329}
330
331static int vidioc_try_fmt(struct file *file, void *prv, struct v4l2_format *f)
332{
333 struct g2d_fmt *fmt;
334 enum v4l2_field *field;
335
336 fmt = find_fmt(f);
337 if (!fmt)
338 return -EINVAL;
339
340 field = &f->fmt.pix.field;
341 if (*field == V4L2_FIELD_ANY)
342 *field = V4L2_FIELD_NONE;
343 else if (*field != V4L2_FIELD_NONE)
344 return -EINVAL;
345
346 if (f->fmt.pix.width > MAX_WIDTH)
347 f->fmt.pix.width = MAX_WIDTH;
348 if (f->fmt.pix.height > MAX_HEIGHT)
349 f->fmt.pix.height = MAX_HEIGHT;
350
351 if (f->fmt.pix.width < 1)
352 f->fmt.pix.width = 1;
353 if (f->fmt.pix.height < 1)
354 f->fmt.pix.height = 1;
355
356 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
357 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
358 return 0;
359}
360
361static int vidioc_s_fmt(struct file *file, void *prv, struct v4l2_format *f)
362{
363 struct g2d_ctx *ctx = prv;
364 struct g2d_dev *dev = ctx->dev;
365 struct vb2_queue *vq;
366 struct g2d_frame *frm;
367 struct g2d_fmt *fmt;
368 int ret = 0;
369
370 /* Adjust all values accordingly to the hardware capabilities
371 * and chosen format. */
372 ret = vidioc_try_fmt(file, prv, f);
373 if (ret)
374 return ret;
375 vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
376 if (vb2_is_busy(vq)) {
377 v4l2_err(&dev->v4l2_dev, "queue (%d) bust\n", f->type);
378 return -EBUSY;
379 }
380 frm = get_frame(ctx, f->type);
381 if (IS_ERR(frm))
382 return PTR_ERR(frm);
383 fmt = find_fmt(f);
384 if (!fmt)
385 return -EINVAL;
386 frm->width = f->fmt.pix.width;
387 frm->height = f->fmt.pix.height;
388 frm->size = f->fmt.pix.sizeimage;
389 /* Reset crop settings */
390 frm->o_width = 0;
391 frm->o_height = 0;
392 frm->c_width = frm->width;
393 frm->c_height = frm->height;
394 frm->right = frm->width;
395 frm->bottom = frm->height;
396 frm->fmt = fmt;
397 frm->stride = f->fmt.pix.bytesperline;
398 return 0;
399}
400
401static unsigned int g2d_poll(struct file *file, struct poll_table_struct *wait)
402{
403 struct g2d_ctx *ctx = fh2ctx(file->private_data);
404 return v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
405}
406
407static int g2d_mmap(struct file *file, struct vm_area_struct *vma)
408{
409 struct g2d_ctx *ctx = fh2ctx(file->private_data);
410 return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
411}
412
413static int vidioc_reqbufs(struct file *file, void *priv,
414 struct v4l2_requestbuffers *reqbufs)
415{
416 struct g2d_ctx *ctx = priv;
417 return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
418}
419
420static int vidioc_querybuf(struct file *file, void *priv,
421 struct v4l2_buffer *buf)
422{
423 struct g2d_ctx *ctx = priv;
424 return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
425}
426
427static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
428{
429 struct g2d_ctx *ctx = priv;
430 return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
431}
432
433static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
434{
435 struct g2d_ctx *ctx = priv;
436 return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
437}
438
439
440static int vidioc_streamon(struct file *file, void *priv,
441 enum v4l2_buf_type type)
442{
443 struct g2d_ctx *ctx = priv;
444 return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
445}
446
447static int vidioc_streamoff(struct file *file, void *priv,
448 enum v4l2_buf_type type)
449{
450 struct g2d_ctx *ctx = priv;
451 return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
452}
453
454static int vidioc_cropcap(struct file *file, void *priv,
455 struct v4l2_cropcap *cr)
456{
457 struct g2d_ctx *ctx = priv;
458 struct g2d_frame *f;
459
460 f = get_frame(ctx, cr->type);
461 if (IS_ERR(f))
462 return PTR_ERR(f);
463
464 cr->bounds.left = 0;
465 cr->bounds.top = 0;
466 cr->bounds.width = f->width;
467 cr->bounds.height = f->height;
468 cr->defrect = cr->bounds;
469 return 0;
470}
471
472static int vidioc_g_crop(struct file *file, void *prv, struct v4l2_crop *cr)
473{
474 struct g2d_ctx *ctx = prv;
475 struct g2d_frame *f;
476
477 f = get_frame(ctx, cr->type);
478 if (IS_ERR(f))
479 return PTR_ERR(f);
480
481 cr->c.left = f->o_height;
482 cr->c.top = f->o_width;
483 cr->c.width = f->c_width;
484 cr->c.height = f->c_height;
485 return 0;
486}
487
488static int vidioc_try_crop(struct file *file, void *prv, struct v4l2_crop *cr)
489{
490 struct g2d_ctx *ctx = prv;
491 struct g2d_dev *dev = ctx->dev;
492 struct g2d_frame *f;
493
494 f = get_frame(ctx, cr->type);
495 if (IS_ERR(f))
496 return PTR_ERR(f);
497
498 if (cr->c.top < 0 || cr->c.left < 0) {
499 v4l2_err(&dev->v4l2_dev,
500 "doesn't support negative values for top & left\n");
501 return -EINVAL;
502 }
503
504 return 0;
505}
506
507static int vidioc_s_crop(struct file *file, void *prv, struct v4l2_crop *cr)
508{
509 struct g2d_ctx *ctx = prv;
510 struct g2d_frame *f;
511 int ret;
512
513 ret = vidioc_try_crop(file, prv, cr);
514 if (ret)
515 return ret;
516 f = get_frame(ctx, cr->type);
517 if (IS_ERR(f))
518 return PTR_ERR(f);
519
520 f->c_width = cr->c.width;
521 f->c_height = cr->c.height;
522 f->o_width = cr->c.left;
523 f->o_height = cr->c.top;
524 f->bottom = f->o_height + f->c_height;
525 f->right = f->o_width + f->c_width;
526 return 0;
527}
528
529static void g2d_lock(void *prv)
530{
531 struct g2d_ctx *ctx = prv;
532 struct g2d_dev *dev = ctx->dev;
533 mutex_lock(&dev->mutex);
534}
535
536static void g2d_unlock(void *prv)
537{
538 struct g2d_ctx *ctx = prv;
539 struct g2d_dev *dev = ctx->dev;
540 mutex_unlock(&dev->mutex);
541}
542
543static void job_abort(void *prv)
544{
545 struct g2d_ctx *ctx = prv;
546 struct g2d_dev *dev = ctx->dev;
547 int ret;
548
2356877c 549 if (dev->curr == NULL) /* No job currently running */
91884734
KD		 550 return;
551
552 ret = wait_event_timeout(dev->irq_queue,
2356877c 553 dev->curr == NULL,
91884734
KD		 554 msecs_to_jiffies(G2D_TIMEOUT));
555}
556
557static void device_run(void *prv)
558{
559 struct g2d_ctx *ctx = prv;
560 struct g2d_dev *dev = ctx->dev;
561 struct vb2_buffer *src, *dst;
27dda973 562 unsigned long flags;
91884734
KD		 563 u32 cmd = 0;
564
565 dev->curr = ctx;
566
567 src = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
568 dst = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
569
570 clk_enable(dev->gate);
571 g2d_reset(dev);
572
27dda973
KD		 573 spin_lock_irqsave(&dev->ctrl_lock, flags);
574
91884734
KD		 575 g2d_set_src_size(dev, &ctx->in);
576 g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
577
578 g2d_set_dst_size(dev, &ctx->out);
579 g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
580
581 g2d_set_rop4(dev, ctx->rop);
d0d28326
SK		 582 g2d_set_flip(dev, ctx->flip);
583
91884734
KD		 584 if (ctx->in.c_width != ctx->out.c_width ||
585 ctx->in.c_height != ctx->out.c_height)
586 cmd |= g2d_cmd_stretch(1);
587 g2d_set_cmd(dev, cmd);
588 g2d_start(dev);
27dda973
KD		 589
590 spin_unlock_irqrestore(&dev->ctrl_lock, flags);
91884734
KD		 591}
592
593static irqreturn_t g2d_isr(int irq, void *prv)
594{
595 struct g2d_dev *dev = prv;
596 struct g2d_ctx *ctx = dev->curr;
597 struct vb2_buffer *src, *dst;
598
599 g2d_clear_int(dev);
600 clk_disable(dev->gate);
601
2356877c 602 BUG_ON(ctx == NULL);
91884734
KD		 603
604 src = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
605 dst = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
606
2356877c
SK		 607 BUG_ON(src == NULL);
608 BUG_ON(dst == NULL);
91884734
KD		 609
610 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
611 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
612 v4l2_m2m_job_finish(dev->m2m_dev, ctx->m2m_ctx);
613
2356877c 614 dev->curr = NULL;
91884734
KD		 615 wake_up(&dev->irq_queue);
616 return IRQ_HANDLED;
617}
618
619static const struct v4l2_file_operations g2d_fops = {
620 .owner = THIS_MODULE,
621 .open = g2d_open,
622 .release = g2d_release,
623 .poll = g2d_poll,
624 .unlocked_ioctl = video_ioctl2,
625 .mmap = g2d_mmap,
626};
627
628static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
629 .vidioc_querycap = vidioc_querycap,
630
631 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
632 .vidioc_g_fmt_vid_cap = vidioc_g_fmt,
633 .vidioc_try_fmt_vid_cap = vidioc_try_fmt,
634 .vidioc_s_fmt_vid_cap = vidioc_s_fmt,
635
636 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
637 .vidioc_g_fmt_vid_out = vidioc_g_fmt,
638 .vidioc_try_fmt_vid_out = vidioc_try_fmt,
639 .vidioc_s_fmt_vid_out = vidioc_s_fmt,
640
641 .vidioc_reqbufs = vidioc_reqbufs,
642 .vidioc_querybuf = vidioc_querybuf,
643
644 .vidioc_qbuf = vidioc_qbuf,
645 .vidioc_dqbuf = vidioc_dqbuf,
646
647 .vidioc_streamon = vidioc_streamon,
648 .vidioc_streamoff = vidioc_streamoff,
649
650 .vidioc_g_crop = vidioc_g_crop,
651 .vidioc_s_crop = vidioc_s_crop,
652 .vidioc_cropcap = vidioc_cropcap,
653};
654
655static struct video_device g2d_videodev = {
656 .name = G2D_NAME,
657 .fops = &g2d_fops,
658 .ioctl_ops = &g2d_ioctl_ops,
659 .minor = -1,
660 .release = video_device_release,
661};
662
663static struct v4l2_m2m_ops g2d_m2m_ops = {
664 .device_run = device_run,
665 .job_abort = job_abort,
666 .lock = g2d_lock,
667 .unlock = g2d_unlock,
668};
669
670static int g2d_probe(struct platform_device *pdev)
671{
672 struct g2d_dev *dev;
673 struct video_device *vfd;
674 struct resource *res;
675 int ret = 0;
676
677 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
678 if (!dev)
679 return -ENOMEM;
27dda973 680 spin_lock_init(&dev->ctrl_lock);
91884734
KD		 681 mutex_init(&dev->mutex);
682 atomic_set(&dev->num_inst, 0);
683 init_waitqueue_head(&dev->irq_queue);
684
685 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
686 if (!res) {
687 dev_err(&pdev->dev, "failed to find registers\n");
688 ret = -ENOENT;
689 goto free_dev;
690 }
691
692 dev->res_regs = request_mem_region(res->start, resource_size(res),
693 dev_name(&pdev->dev));
694
695 if (!dev->res_regs) {
696 dev_err(&pdev->dev, "failed to obtain register region\n");
697 ret = -ENOENT;
698 goto free_dev;
699 }
700
701 dev->regs = ioremap(res->start, resource_size(res));
702 if (!dev->regs) {
703 dev_err(&pdev->dev, "failed to map registers\n");
704 ret = -ENOENT;
705 goto rel_res_regs;
706 }
707
708 dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
709 if (IS_ERR_OR_NULL(dev->clk)) {
710 dev_err(&pdev->dev, "failed to get g2d clock\n");
711 ret = -ENXIO;
712 goto unmap_regs;
713 }
714
11a37c70
KD		 715 ret = clk_prepare(dev->clk);
716 if (ret) {
717 dev_err(&pdev->dev, "failed to prepare g2d clock\n");
718 goto put_clk;
719 }
720
91884734
KD		 721 dev->gate = clk_get(&pdev->dev, "fimg2d");
722 if (IS_ERR_OR_NULL(dev->gate)) {
723 dev_err(&pdev->dev, "failed to get g2d clock gate\n");
724 ret = -ENXIO;
11a37c70
KD		 725 goto unprep_clk;
726 }
727
728 ret = clk_prepare(dev->gate);
729 if (ret) {
730 dev_err(&pdev->dev, "failed to prepare g2d clock gate\n");
731 goto put_clk_gate;
91884734
KD		 732 }
733
734 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
735 if (!res) {
736 dev_err(&pdev->dev, "failed to find IRQ\n");
737 ret = -ENXIO;
11a37c70 738 goto unprep_clk_gate;
91884734
KD		 739 }
740
741 dev->irq = res->start;
742
743 ret = request_irq(dev->irq, g2d_isr, 0, pdev->name, dev);
744 if (ret) {
745 dev_err(&pdev->dev, "failed to install IRQ\n");
746 goto put_clk_gate;
747 }
748
749 dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
750 if (IS_ERR(dev->alloc_ctx)) {
751 ret = PTR_ERR(dev->alloc_ctx);
752 goto rel_irq;
753 }
754
755 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
756 if (ret)
757 goto alloc_ctx_cleanup;
758 vfd = video_device_alloc();
759 if (!vfd) {
760 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
761 ret = -ENOMEM;
762 goto unreg_v4l2_dev;
763 }
764 *vfd = g2d_videodev;
5126f259
HV		 765 /* Locking in file operations other than ioctl should be done
766 by the driver, not the V4L2 core.
767 This driver needs auditing so that this flag can be removed. */
768 set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags);
91884734
KD		 769 vfd->lock = &dev->mutex;
770 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
771 if (ret) {
772 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
773 goto rel_vdev;
774 }
775 video_set_drvdata(vfd, dev);
776 snprintf(vfd->name, sizeof(vfd->name), "%s", g2d_videodev.name);
777 dev->vfd = vfd;
778 v4l2_info(&dev->v4l2_dev, "device registered as /dev/video%d\n",
779 vfd->num);
780 platform_set_drvdata(pdev, dev);
781 dev->m2m_dev = v4l2_m2m_init(&g2d_m2m_ops);
782 if (IS_ERR(dev->m2m_dev)) {
783 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
784 ret = PTR_ERR(dev->m2m_dev);
785 goto unreg_video_dev;
786 }
787
788 def_frame.stride = (def_frame.width * def_frame.fmt->depth) >> 3;
789
790 return 0;
791
792unreg_video_dev:
793 video_unregister_device(dev->vfd);
794rel_vdev:
795 video_device_release(vfd);
796unreg_v4l2_dev:
797 v4l2_device_unregister(&dev->v4l2_dev);
798alloc_ctx_cleanup:
799 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
800rel_irq:
801 free_irq(dev->irq, dev);
11a37c70
KD		 802unprep_clk_gate:
803 clk_unprepare(dev->gate);
91884734
KD		 804put_clk_gate:
805 clk_put(dev->gate);
11a37c70
KD		 806unprep_clk:
807 clk_unprepare(dev->clk);
91884734
KD		 808put_clk:
809 clk_put(dev->clk);
810unmap_regs:
811 iounmap(dev->regs);
812rel_res_regs:
813 release_resource(dev->res_regs);
814free_dev:
815 kfree(dev);
816 return ret;
817}
818
819static int g2d_remove(struct platform_device *pdev)
820{
821 struct g2d_dev *dev = (struct g2d_dev *)platform_get_drvdata(pdev);
822
823 v4l2_info(&dev->v4l2_dev, "Removing " G2D_NAME);
824 v4l2_m2m_release(dev->m2m_dev);
825 video_unregister_device(dev->vfd);
826 v4l2_device_unregister(&dev->v4l2_dev);
827 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
828 free_irq(dev->irq, dev);
11a37c70 829 clk_unprepare(dev->gate);
91884734 830 clk_put(dev->gate);
11a37c70 831 clk_unprepare(dev->clk);
91884734
KD		 832 clk_put(dev->clk);
833 iounmap(dev->regs);
834 release_resource(dev->res_regs);
835 kfree(dev);
836 return 0;
837}
838
839static struct platform_driver g2d_pdrv = {
840 .probe = g2d_probe,
841 .remove = g2d_remove,
842 .driver = {
843 .name = G2D_NAME,
844 .owner = THIS_MODULE,
845 },
846};
847
1d6629b1 848module_platform_driver(g2d_pdrv);
91884734
KD		 849
850MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
851MODULE_DESCRIPTION("S5P G2D 2d graphics accelerator driver");
852MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.089311 seconds and 5 git commands to generate.