]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - drivers/media/platform/sti/bdisp/bdisp-v4l2.c
projects / mirror_ubuntu-bionic-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
media: bdisp: fix memleak on release
[mirror_ubuntu-bionic-kernel.git] / drivers / media / platform / sti / bdisp / bdisp-v4l2.c
CommitLineData
28ffeebb
FD		 1/*
2 * Copyright (C) STMicroelectronics SA 2014
3 * Authors: Fabien Dessenne <fabien.dessenne@st.com> for STMicroelectronics.
4 * License terms: GNU General Public License (GPL), version 2
5 */
6
7#include <linux/errno.h>
8#include <linux/interrupt.h>
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/of.h>
12#include <linux/pm_runtime.h>
13#include <linux/slab.h>
14
15#include <media/v4l2-event.h>
16#include <media/v4l2-ioctl.h>
17
18#include "bdisp.h"
19
20#define BDISP_MAX_CTRL_NUM 10
21
22#define BDISP_WORK_TIMEOUT ((100 * HZ) / 1000)
23
24/* User configuration change */
25#define BDISP_PARAMS BIT(0) /* Config updated */
26#define BDISP_SRC_FMT BIT(1) /* Source set */
27#define BDISP_DST_FMT BIT(2) /* Destination set */
28#define BDISP_CTX_STOP_REQ BIT(3) /* Stop request */
29#define BDISP_CTX_ABORT BIT(4) /* Abort while device run */
30
31#define BDISP_MIN_W 1
32#define BDISP_MAX_W 8191
33#define BDISP_MIN_H 1
34#define BDISP_MAX_H 8191
35
36#define fh_to_ctx(__fh) container_of(__fh, struct bdisp_ctx, fh)
37
38enum bdisp_dev_flags {
39 ST_M2M_OPEN, /* Driver opened */
40 ST_M2M_RUNNING, /* HW device running */
41 ST_M2M_SUSPENDED, /* Driver suspended */
42 ST_M2M_SUSPENDING, /* Driver being suspended */
43};
44
45static const struct bdisp_fmt bdisp_formats[] = {
46 /* ARGB888. [31:0] A:R:G:B 8:8:8:8 little endian */
47 {
48 .pixelformat = V4L2_PIX_FMT_ABGR32, /* is actually ARGB */
49 .nb_planes = 1,
50 .bpp = 32,
51 .bpp_plane0 = 32,
52 .w_align = 1,
53 .h_align = 1
54 },
55 /* XRGB888. [31:0] x:R:G:B 8:8:8:8 little endian */
56 {
57 .pixelformat = V4L2_PIX_FMT_XBGR32, /* is actually xRGB */
58 .nb_planes = 1,
59 .bpp = 32,
60 .bpp_plane0 = 32,
61 .w_align = 1,
62 .h_align = 1
63 },
64 /* RGB565. [15:0] R:G:B 5:6:5 little endian */
65 {
66 .pixelformat = V4L2_PIX_FMT_RGB565,
67 .nb_planes = 1,
68 .bpp = 16,
69 .bpp_plane0 = 16,
70 .w_align = 1,
71 .h_align = 1
72 },
73 /* NV12. YUV420SP - 1 plane for Y + 1 plane for (CbCr) */
74 {
75 .pixelformat = V4L2_PIX_FMT_NV12,
76 .nb_planes = 2,
77 .bpp = 12,
78 .bpp_plane0 = 8,
79 .w_align = 2,
80 .h_align = 2
81 },
82 /* RGB888. [23:0] B:G:R 8:8:8 little endian */
83 {
84 .pixelformat = V4L2_PIX_FMT_RGB24,
85 .nb_planes = 1,
86 .bpp = 24,
87 .bpp_plane0 = 24,
88 .w_align = 1,
89 .h_align = 1
90 },
91 /* YU12. YUV420P - 1 plane for Y + 1 plane for Cb + 1 plane for Cr
92 * To keep as the LAST element of this table (no support on capture)
93 */
94 {
95 .pixelformat = V4L2_PIX_FMT_YUV420,
96 .nb_planes = 3,
97 .bpp = 12,
98 .bpp_plane0 = 8,
99 .w_align = 2,
100 .h_align = 2
101 }
102};
103
104/* Default format : HD ARGB32*/
105#define BDISP_DEF_WIDTH 1920
106#define BDISP_DEF_HEIGHT 1080
107
108static const struct bdisp_frame bdisp_dflt_fmt = {
109 .width = BDISP_DEF_WIDTH,
110 .height = BDISP_DEF_HEIGHT,
111 .fmt = &bdisp_formats[0],
112 .field = V4L2_FIELD_NONE,
113 .bytesperline = BDISP_DEF_WIDTH * 4,
114 .sizeimage = BDISP_DEF_WIDTH * BDISP_DEF_HEIGHT * 4,
115 .colorspace = V4L2_COLORSPACE_REC709,
116 .crop = {0, 0, BDISP_DEF_WIDTH, BDISP_DEF_HEIGHT},
117 .paddr = {0, 0, 0, 0}
118};
119
120static inline void bdisp_ctx_state_lock_set(u32 state, struct bdisp_ctx *ctx)
121{
122 unsigned long flags;
123
124 spin_lock_irqsave(&ctx->bdisp_dev->slock, flags);
125 ctx->state |= state;
126 spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags);
127}
128
129static inline void bdisp_ctx_state_lock_clear(u32 state, struct bdisp_ctx *ctx)
130{
131 unsigned long flags;
132
133 spin_lock_irqsave(&ctx->bdisp_dev->slock, flags);
134 ctx->state &= ~state;
135 spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags);
136}
137
138static inline bool bdisp_ctx_state_is_set(u32 mask, struct bdisp_ctx *ctx)
139{
140 unsigned long flags;
141 bool ret;
142
143 spin_lock_irqsave(&ctx->bdisp_dev->slock, flags);
144 ret = (ctx->state & mask) == mask;
145 spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags);
146
147 return ret;
148}
149
150static const struct bdisp_fmt *bdisp_find_fmt(u32 pixelformat)
151{
152 const struct bdisp_fmt *fmt;
153 unsigned int i;
154
155 for (i = 0; i < ARRAY_SIZE(bdisp_formats); i++) {
156 fmt = &bdisp_formats[i];
157 if (fmt->pixelformat == pixelformat)
158 return fmt;
159 }
160
161 return NULL;
162}
163
164static struct bdisp_frame *ctx_get_frame(struct bdisp_ctx *ctx,
165 enum v4l2_buf_type type)
166{
167 switch (type) {
168 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
169 return &ctx->src;
170 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
171 return &ctx->dst;
172 default:
173 dev_err(ctx->bdisp_dev->dev,
174 "Wrong buffer/video queue type (%d)\n", type);
175 break;
176 }
177
178 return ERR_PTR(-EINVAL);
179}
180
181static void bdisp_job_finish(struct bdisp_ctx *ctx, int vb_state)
182{
2d700715 183 struct vb2_v4l2_buffer *src_vb, *dst_vb;
28ffeebb
FD		 184
185 if (WARN(!ctx || !ctx->fh.m2m_ctx, "Null hardware context\n"))
186 return;
187
188 dev_dbg(ctx->bdisp_dev->dev, "%s\n", __func__);
189
190 src_vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
191 dst_vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
192
193 if (src_vb && dst_vb) {
d6dd645e 194 dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp;
2d700715
JS		 195 dst_vb->timecode = src_vb->timecode;
196 dst_vb->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
197 dst_vb->flags |= src_vb->flags &
28ffeebb
FD		 198 V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
199
200 v4l2_m2m_buf_done(src_vb, vb_state);
201 v4l2_m2m_buf_done(dst_vb, vb_state);
202
203 v4l2_m2m_job_finish(ctx->bdisp_dev->m2m.m2m_dev,
204 ctx->fh.m2m_ctx);
205 }
206}
207
208static int bdisp_ctx_stop_req(struct bdisp_ctx *ctx)
209{
210 struct bdisp_ctx *curr_ctx;
211 struct bdisp_dev *bdisp = ctx->bdisp_dev;
212 int ret;
213
214 dev_dbg(ctx->bdisp_dev->dev, "%s\n", __func__);
215
216 cancel_delayed_work(&bdisp->timeout_work);
217
218 curr_ctx = v4l2_m2m_get_curr_priv(bdisp->m2m.m2m_dev);
219 if (!test_bit(ST_M2M_RUNNING, &bdisp->state) || (curr_ctx != ctx))
220 return 0;
221
222 bdisp_ctx_state_lock_set(BDISP_CTX_STOP_REQ, ctx);
223
224 ret = wait_event_timeout(bdisp->irq_queue,
225 !bdisp_ctx_state_is_set(BDISP_CTX_STOP_REQ, ctx),
226 BDISP_WORK_TIMEOUT);
227
228 if (!ret) {
229 dev_err(ctx->bdisp_dev->dev, "%s IRQ timeout\n", __func__);
230 return -ETIMEDOUT;
231 }
232
233 return 0;
234}
235
236static void __bdisp_job_abort(struct bdisp_ctx *ctx)
237{
238 int ret;
239
240 ret = bdisp_ctx_stop_req(ctx);
241 if ((ret == -ETIMEDOUT) || (ctx->state & BDISP_CTX_ABORT)) {
242 bdisp_ctx_state_lock_clear(BDISP_CTX_STOP_REQ | BDISP_CTX_ABORT,
243 ctx);
244 bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR);
245 }
246}
247
248static void bdisp_job_abort(void *priv)
249{
250 __bdisp_job_abort((struct bdisp_ctx *)priv);
251}
252
253static int bdisp_get_addr(struct bdisp_ctx *ctx, struct vb2_buffer *vb,
254 struct bdisp_frame *frame, dma_addr_t *paddr)
255{
256 if (!vb || !frame)
257 return -EINVAL;
258
259 paddr[0] = vb2_dma_contig_plane_dma_addr(vb, 0);
260
261 if (frame->fmt->nb_planes > 1)
262 /* UV (NV12) or U (420P) */
263 paddr[1] = (dma_addr_t)(paddr[0] +
264 frame->bytesperline * frame->height);
265
266 if (frame->fmt->nb_planes > 2)
267 /* V (420P) */
268 paddr[2] = (dma_addr_t)(paddr[1] +
269 (frame->bytesperline * frame->height) / 4);
270
271 if (frame->fmt->nb_planes > 3)
272 dev_dbg(ctx->bdisp_dev->dev, "ignoring some planes\n");
273
274 dev_dbg(ctx->bdisp_dev->dev,
275 "%s plane[0]=%pad plane[1]=%pad plane[2]=%pad\n",
276 __func__, &paddr[0], &paddr[1], &paddr[2]);
277
278 return 0;
279}
280
281static int bdisp_get_bufs(struct bdisp_ctx *ctx)
282{
283 struct bdisp_frame *src, *dst;
2d700715 284 struct vb2_v4l2_buffer *src_vb, *dst_vb;
28ffeebb
FD		 285 int ret;
286
287 src = &ctx->src;
288 dst = &ctx->dst;
289
290 src_vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
2d700715 291 ret = bdisp_get_addr(ctx, &src_vb->vb2_buf, src, src->paddr);
28ffeebb
FD		 292 if (ret)
293 return ret;
294
295 dst_vb = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
2d700715 296 ret = bdisp_get_addr(ctx, &dst_vb->vb2_buf, dst, dst->paddr);
28ffeebb
FD		 297 if (ret)
298 return ret;
299
d6dd645e 300 dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp;
28ffeebb
FD		 301
302 return 0;
303}
304
305static void bdisp_device_run(void *priv)
306{
307 struct bdisp_ctx *ctx = priv;
308 struct bdisp_dev *bdisp;
309 unsigned long flags;
310 int err = 0;
311
312 if (WARN(!ctx, "Null hardware context\n"))
313 return;
314
315 bdisp = ctx->bdisp_dev;
316 dev_dbg(bdisp->dev, "%s\n", __func__);
317 spin_lock_irqsave(&bdisp->slock, flags);
318
319 if (bdisp->m2m.ctx != ctx) {
320 dev_dbg(bdisp->dev, "ctx updated: %p -> %p\n",
321 bdisp->m2m.ctx, ctx);
322 ctx->state |= BDISP_PARAMS;
323 bdisp->m2m.ctx = ctx;
324 }
325
326 if (ctx->state & BDISP_CTX_STOP_REQ) {
327 ctx->state &= ~BDISP_CTX_STOP_REQ;
328 ctx->state |= BDISP_CTX_ABORT;
329 wake_up(&bdisp->irq_queue);
330 goto out;
331 }
332
333 err = bdisp_get_bufs(ctx);
334 if (err) {
335 dev_err(bdisp->dev, "cannot get address\n");
336 goto out;
337 }
338
34b6beb6
FD		 339 bdisp_dbg_perf_begin(bdisp);
340
28ffeebb
FD		 341 err = bdisp_hw_reset(bdisp);
342 if (err) {
343 dev_err(bdisp->dev, "could not get HW ready\n");
344 goto out;
345 }
346
347 err = bdisp_hw_update(ctx);
348 if (err) {
349 dev_err(bdisp->dev, "could not send HW request\n");
350 goto out;
351 }
352
353 queue_delayed_work(bdisp->work_queue, &bdisp->timeout_work,
354 BDISP_WORK_TIMEOUT);
355 set_bit(ST_M2M_RUNNING, &bdisp->state);
356out:
357 ctx->state &= ~BDISP_PARAMS;
358 spin_unlock_irqrestore(&bdisp->slock, flags);
359 if (err)
360 bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR);
361}
362
fdd488df 363static const struct v4l2_m2m_ops bdisp_m2m_ops = {
28ffeebb
FD		 364 .device_run = bdisp_device_run,
365 .job_abort = bdisp_job_abort,
366};
367
368static int __bdisp_s_ctrl(struct bdisp_ctx *ctx, struct v4l2_ctrl *ctrl)
369{
370 if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE)
371 return 0;
372
373 switch (ctrl->id) {
374 case V4L2_CID_HFLIP:
375 ctx->hflip = ctrl->val;
376 break;
377 case V4L2_CID_VFLIP:
378 ctx->vflip = ctrl->val;
379 break;
380 default:
381 dev_err(ctx->bdisp_dev->dev, "unknown control %d\n", ctrl->id);
382 return -EINVAL;
383 }
384
385 ctx->state |= BDISP_PARAMS;
386
387 return 0;
388}
389
390static int bdisp_s_ctrl(struct v4l2_ctrl *ctrl)
391{
392 struct bdisp_ctx *ctx = container_of(ctrl->handler, struct bdisp_ctx,
393 ctrl_handler);
394 unsigned long flags;
395 int ret;
396
397 spin_lock_irqsave(&ctx->bdisp_dev->slock, flags);
398 ret = __bdisp_s_ctrl(ctx, ctrl);
399 spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags);
400
401 return ret;
402}
403
404static const struct v4l2_ctrl_ops bdisp_c_ops = {
405 .s_ctrl = bdisp_s_ctrl,
406};
407
408static int bdisp_ctrls_create(struct bdisp_ctx *ctx)
409{
410 if (ctx->ctrls_rdy)
411 return 0;
412
413 v4l2_ctrl_handler_init(&ctx->ctrl_handler, BDISP_MAX_CTRL_NUM);
414
415 ctx->bdisp_ctrls.hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler,
416 &bdisp_c_ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
417 ctx->bdisp_ctrls.vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler,
418 &bdisp_c_ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
419
420 if (ctx->ctrl_handler.error) {
421 int err = ctx->ctrl_handler.error;
422
423 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
424 return err;
425 }
426
427 ctx->ctrls_rdy = true;
428
429 return 0;
430}
431
432static void bdisp_ctrls_delete(struct bdisp_ctx *ctx)
433{
434 if (ctx->ctrls_rdy) {
435 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
436 ctx->ctrls_rdy = false;
437 }
438}
439
440static int bdisp_queue_setup(struct vb2_queue *vq,
28ffeebb 441 unsigned int *nb_buf, unsigned int *nb_planes,
36c0f8b3 442 unsigned int sizes[], struct device *alloc_devs[])
28ffeebb
FD		 443{
444 struct bdisp_ctx *ctx = vb2_get_drv_priv(vq);
445 struct bdisp_frame *frame = ctx_get_frame(ctx, vq->type);
446
447 if (IS_ERR(frame)) {
448 dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame);
449 return PTR_ERR(frame);
450 }
451
452 if (!frame->fmt) {
453 dev_err(ctx->bdisp_dev->dev, "Invalid format\n");
454 return -EINVAL;
455 }
456
df9ecb0c
HV		 457 if (*nb_planes)
458 return sizes[0] < frame->sizeimage ? -EINVAL : 0;
28ffeebb
FD		 459
460 *nb_planes = 1;
df9ecb0c 461 sizes[0] = frame->sizeimage;
28ffeebb
FD		 462
463 return 0;
464}
465
466static int bdisp_buf_prepare(struct vb2_buffer *vb)
467{
468 struct bdisp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
469 struct bdisp_frame *frame = ctx_get_frame(ctx, vb->vb2_queue->type);
470
471 if (IS_ERR(frame)) {
472 dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame);
473 return PTR_ERR(frame);
474 }
475
476 if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
477 vb2_set_plane_payload(vb, 0, frame->sizeimage);
478
479 return 0;
480}
481
482static void bdisp_buf_queue(struct vb2_buffer *vb)
483{
2d700715 484 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
28ffeebb
FD		 485 struct bdisp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
486
487 /* return to V4L2 any 0-size buffer so it can be dequeued by user */
488 if (!vb2_get_plane_payload(vb, 0)) {
489 dev_dbg(ctx->bdisp_dev->dev, "0 data buffer, skip it\n");
490 vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
491 return;
492 }
493
494 if (ctx->fh.m2m_ctx)
2d700715 495 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
28ffeebb
FD		 496}
497
498static int bdisp_start_streaming(struct vb2_queue *q, unsigned int count)
499{
500 struct bdisp_ctx *ctx = q->drv_priv;
2d700715 501 struct vb2_v4l2_buffer *buf;
28ffeebb
FD		 502 int ret = pm_runtime_get_sync(ctx->bdisp_dev->dev);
503
504 if (ret < 0) {
505 dev_err(ctx->bdisp_dev->dev, "failed to set runtime PM\n");
506
507 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
508 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
509 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
510 } else {
511 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
512 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
513 }
514
515 return ret;
516 }
517
518 return 0;
519}
520
521static void bdisp_stop_streaming(struct vb2_queue *q)
522{
523 struct bdisp_ctx *ctx = q->drv_priv;
524
525 __bdisp_job_abort(ctx);
526
527 pm_runtime_put(ctx->bdisp_dev->dev);
528}
529
b7b361f0 530static const struct vb2_ops bdisp_qops = {
28ffeebb
FD		 531 .queue_setup = bdisp_queue_setup,
532 .buf_prepare = bdisp_buf_prepare,
533 .buf_queue = bdisp_buf_queue,
534 .wait_prepare = vb2_ops_wait_prepare,
535 .wait_finish = vb2_ops_wait_finish,
536 .stop_streaming = bdisp_stop_streaming,
537 .start_streaming = bdisp_start_streaming,
538};
539
540static int queue_init(void *priv,
541 struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
542{
543 struct bdisp_ctx *ctx = priv;
544 int ret;
545
546 memset(src_vq, 0, sizeof(*src_vq));
547 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
548 src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
549 src_vq->drv_priv = ctx;
550 src_vq->ops = &bdisp_qops;
551 src_vq->mem_ops = &vb2_dma_contig_memops;
552 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
553 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
554 src_vq->lock = &ctx->bdisp_dev->lock;
dce57314 555 src_vq->dev = ctx->bdisp_dev->v4l2_dev.dev;
28ffeebb
FD		 556
557 ret = vb2_queue_init(src_vq);
558 if (ret)
559 return ret;
560
561 memset(dst_vq, 0, sizeof(*dst_vq));
562 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
563 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
564 dst_vq->drv_priv = ctx;
565 dst_vq->ops = &bdisp_qops;
566 dst_vq->mem_ops = &vb2_dma_contig_memops;
567 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
568 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
569 dst_vq->lock = &ctx->bdisp_dev->lock;
dce57314 570 dst_vq->dev = ctx->bdisp_dev->v4l2_dev.dev;
28ffeebb
FD		 571
572 return vb2_queue_init(dst_vq);
573}
574
575static int bdisp_open(struct file *file)
576{
577 struct bdisp_dev *bdisp = video_drvdata(file);
578 struct bdisp_ctx *ctx = NULL;
579 int ret;
580
581 if (mutex_lock_interruptible(&bdisp->lock))
582 return -ERESTARTSYS;
583
584 /* Allocate memory for both context and node */
585 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
586 if (!ctx) {
587 ret = -ENOMEM;
588 goto unlock;
589 }
590 ctx->bdisp_dev = bdisp;
591
592 if (bdisp_hw_alloc_nodes(ctx)) {
593 dev_err(bdisp->dev, "no memory for nodes\n");
594 ret = -ENOMEM;
595 goto mem_ctx;
596 }
597
598 v4l2_fh_init(&ctx->fh, bdisp->m2m.vdev);
599
600 ret = bdisp_ctrls_create(ctx);
601 if (ret) {
602 dev_err(bdisp->dev, "Failed to create control\n");
603 goto error_fh;
604 }
605
606 /* Use separate control handler per file handle */
607 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
608 file->private_data = &ctx->fh;
609 v4l2_fh_add(&ctx->fh);
610
611 /* Default format */
612 ctx->src = bdisp_dflt_fmt;
613 ctx->dst = bdisp_dflt_fmt;
614
615 /* Setup the device context for mem2mem mode. */
616 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(bdisp->m2m.m2m_dev, ctx,
617 queue_init);
618 if (IS_ERR(ctx->fh.m2m_ctx)) {
619 dev_err(bdisp->dev, "Failed to initialize m2m context\n");
620 ret = PTR_ERR(ctx->fh.m2m_ctx);
621 goto error_ctrls;
622 }
623
624 bdisp->m2m.refcnt++;
625 set_bit(ST_M2M_OPEN, &bdisp->state);
626
627 dev_dbg(bdisp->dev, "driver opened, ctx = 0x%p\n", ctx);
628
629 mutex_unlock(&bdisp->lock);
630
631 return 0;
632
633error_ctrls:
634 bdisp_ctrls_delete(ctx);
28ffeebb 635 v4l2_fh_del(&ctx->fh);
eb3f1b7f 636error_fh:
28ffeebb
FD		 637 v4l2_fh_exit(&ctx->fh);
638 bdisp_hw_free_nodes(ctx);
639mem_ctx:
640 kfree(ctx);
641unlock:
642 mutex_unlock(&bdisp->lock);
643
644 return ret;
645}
646
647static int bdisp_release(struct file *file)
648{
649 struct bdisp_ctx *ctx = fh_to_ctx(file->private_data);
650 struct bdisp_dev *bdisp = ctx->bdisp_dev;
651
652 dev_dbg(bdisp->dev, "%s\n", __func__);
653
aab84aeb 654 mutex_lock(&bdisp->lock);
28ffeebb
FD		 655
656 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
657
658 bdisp_ctrls_delete(ctx);
659
660 v4l2_fh_del(&ctx->fh);
661 v4l2_fh_exit(&ctx->fh);
662
663 if (--bdisp->m2m.refcnt <= 0)
664 clear_bit(ST_M2M_OPEN, &bdisp->state);
665
666 bdisp_hw_free_nodes(ctx);
667
668 kfree(ctx);
669
670 mutex_unlock(&bdisp->lock);
671
672 return 0;
673}
674
675static const struct v4l2_file_operations bdisp_fops = {
676 .owner = THIS_MODULE,
677 .open = bdisp_open,
678 .release = bdisp_release,
679 .poll = v4l2_m2m_fop_poll,
680 .unlocked_ioctl = video_ioctl2,
681 .mmap = v4l2_m2m_fop_mmap,
682};
683
684static int bdisp_querycap(struct file *file, void *fh,
685 struct v4l2_capability *cap)
686{
687 struct bdisp_ctx *ctx = fh_to_ctx(fh);
688 struct bdisp_dev *bdisp = ctx->bdisp_dev;
689
690 strlcpy(cap->driver, bdisp->pdev->name, sizeof(cap->driver));
691 strlcpy(cap->card, bdisp->pdev->name, sizeof(cap->card));
692 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s%d",
693 BDISP_NAME, bdisp->id);
694
695 cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M;
696
697 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
698
699 return 0;
700}
701
702static int bdisp_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
703{
704 struct bdisp_ctx *ctx = fh_to_ctx(fh);
705 const struct bdisp_fmt *fmt;
706
707 if (f->index >= ARRAY_SIZE(bdisp_formats))
708 return -EINVAL;
709
710 fmt = &bdisp_formats[f->index];
711
712 if ((fmt->pixelformat == V4L2_PIX_FMT_YUV420) &&
713 (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)) {
714 dev_dbg(ctx->bdisp_dev->dev, "No YU12 on capture\n");
715 return -EINVAL;
716 }
717 f->pixelformat = fmt->pixelformat;
718
719 return 0;
720}
721
722static int bdisp_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
723{
724 struct bdisp_ctx *ctx = fh_to_ctx(fh);
bf388170 725 struct v4l2_pix_format *pix;
28ffeebb
FD		 726 struct bdisp_frame *frame = ctx_get_frame(ctx, f->type);
727
728 if (IS_ERR(frame)) {
729 dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame);
730 return PTR_ERR(frame);
731 }
732
733 pix = &f->fmt.pix;
734 pix->width = frame->width;
735 pix->height = frame->height;
736 pix->pixelformat = frame->fmt->pixelformat;
737 pix->field = frame->field;
738 pix->bytesperline = frame->bytesperline;
739 pix->sizeimage = frame->sizeimage;
740 pix->colorspace = (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ?
741 frame->colorspace : bdisp_dflt_fmt.colorspace;
742
743 return 0;
744}
745
746static int bdisp_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
747{
748 struct bdisp_ctx *ctx = fh_to_ctx(fh);
749 struct v4l2_pix_format *pix = &f->fmt.pix;
750 const struct bdisp_fmt *format;
751 u32 in_w, in_h;
752
753 format = bdisp_find_fmt(pix->pixelformat);
754 if (!format) {
755 dev_dbg(ctx->bdisp_dev->dev, "Unknown format 0x%x\n",
756 pix->pixelformat);
757 return -EINVAL;
758 }
759
760 /* YUV420P only supported for VIDEO_OUTPUT */
761 if ((format->pixelformat == V4L2_PIX_FMT_YUV420) &&
762 (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)) {
763 dev_dbg(ctx->bdisp_dev->dev, "No YU12 on capture\n");
764 return -EINVAL;
765 }
766
767 /* Field (interlaced only supported on OUTPUT) */
768 if ((f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
769 (pix->field != V4L2_FIELD_INTERLACED))
770 pix->field = V4L2_FIELD_NONE;
771
772 /* Adjust width & height */
773 in_w = pix->width;
774 in_h = pix->height;
775 v4l_bound_align_image(&pix->width,
776 BDISP_MIN_W, BDISP_MAX_W,
777 ffs(format->w_align) - 1,
778 &pix->height,
779 BDISP_MIN_H, BDISP_MAX_H,
780 ffs(format->h_align) - 1,
781 0);
782 if ((pix->width != in_w) || (pix->height != in_h))
783 dev_dbg(ctx->bdisp_dev->dev,
784 "%s size updated: %dx%d -> %dx%d\n", __func__,
785 in_w, in_h, pix->width, pix->height);
786
787 pix->bytesperline = (pix->width * format->bpp_plane0) / 8;
788 pix->sizeimage = (pix->width * pix->height * format->bpp) / 8;
789
790 if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
791 pix->colorspace = bdisp_dflt_fmt.colorspace;
792
793 return 0;
794}
795
796static int bdisp_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
797{
798 struct bdisp_ctx *ctx = fh_to_ctx(fh);
799 struct vb2_queue *vq;
800 struct bdisp_frame *frame;
801 struct v4l2_pix_format *pix;
802 int ret;
803 u32 state;
804
805 ret = bdisp_try_fmt(file, fh, f);
806 if (ret) {
807 dev_err(ctx->bdisp_dev->dev, "Cannot set format\n");
808 return ret;
809 }
810
811 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
812 if (vb2_is_streaming(vq)) {
813 dev_err(ctx->bdisp_dev->dev, "queue (%d) busy\n", f->type);
814 return -EBUSY;
815 }
816
817 frame = (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ?
818 &ctx->src : &ctx->dst;
819 pix = &f->fmt.pix;
820 frame->fmt = bdisp_find_fmt(pix->pixelformat);
821 if (!frame->fmt) {
822 dev_err(ctx->bdisp_dev->dev, "Unknown format 0x%x\n",
823 pix->pixelformat);
824 return -EINVAL;
825 }
826
827 frame->width = pix->width;
828 frame->height = pix->height;
829 frame->bytesperline = pix->bytesperline;
830 frame->sizeimage = pix->sizeimage;
831 frame->field = pix->field;
832 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
833 frame->colorspace = pix->colorspace;
834
835 frame->crop.width = frame->width;
836 frame->crop.height = frame->height;
837 frame->crop.left = 0;
838 frame->crop.top = 0;
839
840 state = BDISP_PARAMS;
841 state |= (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
842 BDISP_DST_FMT : BDISP_SRC_FMT;
843 bdisp_ctx_state_lock_set(state, ctx);
844
845 return 0;
846}
847
848static int bdisp_g_selection(struct file *file, void *fh,
849 struct v4l2_selection *s)
850{
851 struct bdisp_frame *frame;
852 struct bdisp_ctx *ctx = fh_to_ctx(fh);
853
28ffeebb
FD		 854 frame = ctx_get_frame(ctx, s->type);
855 if (IS_ERR(frame)) {
856 dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame);
857 return PTR_ERR(frame);
858 }
859
3d8bffe8
FD		 860 switch (s->type) {
861 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
862 switch (s->target) {
863 case V4L2_SEL_TGT_CROP:
864 /* cropped frame */
865 s->r = frame->crop;
866 break;
867 case V4L2_SEL_TGT_CROP_DEFAULT:
868 case V4L2_SEL_TGT_CROP_BOUNDS:
869 /* complete frame */
870 s->r.left = 0;
871 s->r.top = 0;
872 s->r.width = frame->width;
873 s->r.height = frame->height;
874 break;
875 default:
876 dev_err(ctx->bdisp_dev->dev, "Invalid target\n");
877 return -EINVAL;
878 }
28ffeebb 879 break;
3d8bffe8
FD		 880
881 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
882 switch (s->target) {
883 case V4L2_SEL_TGT_COMPOSE:
884 case V4L2_SEL_TGT_COMPOSE_PADDED:
885 /* composed (cropped) frame */
886 s->r = frame->crop;
887 break;
888 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
889 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
890 /* complete frame */
891 s->r.left = 0;
892 s->r.top = 0;
893 s->r.width = frame->width;
894 s->r.height = frame->height;
895 break;
896 default:
897 dev_err(ctx->bdisp_dev->dev, "Invalid target\n");
898 return -EINVAL;
899 }
28ffeebb 900 break;
3d8bffe8 901
28ffeebb 902 default:
3d8bffe8 903 dev_err(ctx->bdisp_dev->dev, "Invalid type\n");
28ffeebb
FD		 904 return -EINVAL;
905 }
906
907 return 0;
908}
909
910static int is_rect_enclosed(struct v4l2_rect *a, struct v4l2_rect *b)
911{
912 /* Return 1 if a is enclosed in b, or 0 otherwise. */
913
914 if (a->left < b->left || a->top < b->top)
915 return 0;
916
917 if (a->left + a->width > b->left + b->width)
918 return 0;
919
920 if (a->top + a->height > b->top + b->height)
921 return 0;
922
923 return 1;
924}
925
926static int bdisp_s_selection(struct file *file, void *fh,
927 struct v4l2_selection *s)
928{
929 struct bdisp_frame *frame;
930 struct bdisp_ctx *ctx = fh_to_ctx(fh);
931 struct v4l2_rect *in, out;
3d8bffe8 932 bool valid = false;
28ffeebb 933
3d8bffe8
FD		 934 if ((s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) &&
935 (s->target == V4L2_SEL_TGT_CROP))
936 valid = true;
937
938 if ((s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
939 (s->target == V4L2_SEL_TGT_COMPOSE))
940 valid = true;
28ffeebb 941
3d8bffe8
FD		 942 if (!valid) {
943 dev_err(ctx->bdisp_dev->dev, "Invalid type / target\n");
28ffeebb
FD		 944 return -EINVAL;
945 }
946
947 frame = ctx_get_frame(ctx, s->type);
948 if (IS_ERR(frame)) {
949 dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame);
950 return PTR_ERR(frame);
951 }
952
953 in = &s->r;
954 out = *in;
955
956 /* Align and check origin */
957 out.left = ALIGN(in->left, frame->fmt->w_align);
958 out.top = ALIGN(in->top, frame->fmt->h_align);
959
960 if ((out.left < 0) || (out.left >= frame->width) ||
961 (out.top < 0) || (out.top >= frame->height)) {
962 dev_err(ctx->bdisp_dev->dev,
963 "Invalid crop: %dx%d@(%d,%d) vs frame: %dx%d\n",
964 out.width, out.height, out.left, out.top,
965 frame->width, frame->height);
966 return -EINVAL;
967 }
968
969 /* Align and check size */
970 out.width = ALIGN(in->width, frame->fmt->w_align);
971 out.height = ALIGN(in->height, frame->fmt->w_align);
972
1a8b18af 973 if (((out.left + out.width) > frame->width) ||
28ffeebb
FD		 974 ((out.top + out.height) > frame->height)) {
975 dev_err(ctx->bdisp_dev->dev,
976 "Invalid crop: %dx%d@(%d,%d) vs frame: %dx%d\n",
977 out.width, out.height, out.left, out.top,
978 frame->width, frame->height);
979 return -EINVAL;
980 }
981
982 /* Checks adjust constraints flags */
983 if (s->flags & V4L2_SEL_FLAG_LE && !is_rect_enclosed(&out, in))
984 return -ERANGE;
985
986 if (s->flags & V4L2_SEL_FLAG_GE && !is_rect_enclosed(in, &out))
987 return -ERANGE;
988
989 if ((out.left != in->left) || (out.top != in->top) ||
990 (out.width != in->width) || (out.height != in->height)) {
991 dev_dbg(ctx->bdisp_dev->dev,
992 "%s crop updated: %dx%d@(%d,%d) -> %dx%d@(%d,%d)\n",
993 __func__, in->width, in->height, in->left, in->top,
994 out.width, out.height, out.left, out.top);
995 *in = out;
996 }
997
998 frame->crop = out;
999
1000 bdisp_ctx_state_lock_set(BDISP_PARAMS, ctx);
1001
1002 return 0;
1003}
1004
1005static int bdisp_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
1006{
1007 struct bdisp_ctx *ctx = fh_to_ctx(fh);
1008
1009 if ((type == V4L2_BUF_TYPE_VIDEO_OUTPUT) &&
1010 !bdisp_ctx_state_is_set(BDISP_SRC_FMT, ctx)) {
1011 dev_err(ctx->bdisp_dev->dev, "src not defined\n");
1012 return -EINVAL;
1013 }
1014
1015 if ((type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1016 !bdisp_ctx_state_is_set(BDISP_DST_FMT, ctx)) {
1017 dev_err(ctx->bdisp_dev->dev, "dst not defined\n");
1018 return -EINVAL;
1019 }
1020
1021 return v4l2_m2m_streamon(file, ctx->fh.m2m_ctx, type);
1022}
1023
1024static const struct v4l2_ioctl_ops bdisp_ioctl_ops = {
1025 .vidioc_querycap = bdisp_querycap,
1026 .vidioc_enum_fmt_vid_cap = bdisp_enum_fmt,
1027 .vidioc_enum_fmt_vid_out = bdisp_enum_fmt,
1028 .vidioc_g_fmt_vid_cap = bdisp_g_fmt,
1029 .vidioc_g_fmt_vid_out = bdisp_g_fmt,
1030 .vidioc_try_fmt_vid_cap = bdisp_try_fmt,
1031 .vidioc_try_fmt_vid_out = bdisp_try_fmt,
1032 .vidioc_s_fmt_vid_cap = bdisp_s_fmt,
1033 .vidioc_s_fmt_vid_out = bdisp_s_fmt,
1034 .vidioc_g_selection = bdisp_g_selection,
1035 .vidioc_s_selection = bdisp_s_selection,
1036 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
1037 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
1038 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
1039 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
1040 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
1041 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
1042 .vidioc_streamon = bdisp_streamon,
1043 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
1044 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1045 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1046};
1047
1048static int bdisp_register_device(struct bdisp_dev *bdisp)
1049{
28ffeebb
FD		 1050 int ret;
1051
1052 if (!bdisp)
1053 return -ENODEV;
1054
28ffeebb
FD		 1055 bdisp->vdev.fops = &bdisp_fops;
1056 bdisp->vdev.ioctl_ops = &bdisp_ioctl_ops;
1057 bdisp->vdev.release = video_device_release_empty;
1058 bdisp->vdev.lock = &bdisp->lock;
1059 bdisp->vdev.vfl_dir = VFL_DIR_M2M;
1060 bdisp->vdev.v4l2_dev = &bdisp->v4l2_dev;
1061 snprintf(bdisp->vdev.name, sizeof(bdisp->vdev.name), "%s.%d",
1062 BDISP_NAME, bdisp->id);
1063
1064 video_set_drvdata(&bdisp->vdev, bdisp);
1065
1066 bdisp->m2m.vdev = &bdisp->vdev;
1067 bdisp->m2m.m2m_dev = v4l2_m2m_init(&bdisp_m2m_ops);
1068 if (IS_ERR(bdisp->m2m.m2m_dev)) {
1069 dev_err(bdisp->dev, "failed to initialize v4l2-m2m device\n");
1070 return PTR_ERR(bdisp->m2m.m2m_dev);
1071 }
1072
1073 ret = video_register_device(&bdisp->vdev, VFL_TYPE_GRABBER, -1);
1074 if (ret) {
1075 dev_err(bdisp->dev,
1076 "%s(): failed to register video device\n", __func__);
1077 v4l2_m2m_release(bdisp->m2m.m2m_dev);
1078 return ret;
1079 }
1080
1081 return 0;
1082}
1083
1084static void bdisp_unregister_device(struct bdisp_dev *bdisp)
1085{
1086 if (!bdisp)
1087 return;
1088
1089 if (bdisp->m2m.m2m_dev)
1090 v4l2_m2m_release(bdisp->m2m.m2m_dev);
1091
1092 video_unregister_device(bdisp->m2m.vdev);
1093}
1094
1095static irqreturn_t bdisp_irq_thread(int irq, void *priv)
1096{
1097 struct bdisp_dev *bdisp = priv;
1098 struct bdisp_ctx *ctx;
1099
1100 spin_lock(&bdisp->slock);
1101
34b6beb6
FD		 1102 bdisp_dbg_perf_end(bdisp);
1103
28ffeebb
FD		 1104 cancel_delayed_work(&bdisp->timeout_work);
1105
1106 if (!test_and_clear_bit(ST_M2M_RUNNING, &bdisp->state))
1107 goto isr_unlock;
1108
1109 if (test_and_clear_bit(ST_M2M_SUSPENDING, &bdisp->state)) {
1110 set_bit(ST_M2M_SUSPENDED, &bdisp->state);
1111 wake_up(&bdisp->irq_queue);
1112 goto isr_unlock;
1113 }
1114
1115 ctx = v4l2_m2m_get_curr_priv(bdisp->m2m.m2m_dev);
1116 if (!ctx || !ctx->fh.m2m_ctx)
1117 goto isr_unlock;
1118
1119 spin_unlock(&bdisp->slock);
1120
1121 bdisp_job_finish(ctx, VB2_BUF_STATE_DONE);
1122
1123 if (bdisp_ctx_state_is_set(BDISP_CTX_STOP_REQ, ctx)) {
1124 bdisp_ctx_state_lock_clear(BDISP_CTX_STOP_REQ, ctx);
1125 wake_up(&bdisp->irq_queue);
1126 }
1127
1128 return IRQ_HANDLED;
1129
1130isr_unlock:
1131 spin_unlock(&bdisp->slock);
1132
1133 return IRQ_HANDLED;
1134}
1135
1136static irqreturn_t bdisp_irq_handler(int irq, void *priv)
1137{
1138 if (bdisp_hw_get_and_clear_irq((struct bdisp_dev *)priv))
1139 return IRQ_NONE;
1140 else
1141 return IRQ_WAKE_THREAD;
1142}
1143
1144static void bdisp_irq_timeout(struct work_struct *ptr)
1145{
1146 struct delayed_work *twork = to_delayed_work(ptr);
1147 struct bdisp_dev *bdisp = container_of(twork, struct bdisp_dev,
1148 timeout_work);
1149 struct bdisp_ctx *ctx;
1150
1151 ctx = v4l2_m2m_get_curr_priv(bdisp->m2m.m2m_dev);
1152
1153 dev_err(ctx->bdisp_dev->dev, "Device work timeout\n");
1154
1155 spin_lock(&bdisp->slock);
1156 clear_bit(ST_M2M_RUNNING, &bdisp->state);
1157 spin_unlock(&bdisp->slock);
1158
1159 bdisp_hw_reset(bdisp);
1160
1161 bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR);
1162}
1163
1164static int bdisp_m2m_suspend(struct bdisp_dev *bdisp)
1165{
1166 unsigned long flags;
1167 int timeout;
1168
1169 spin_lock_irqsave(&bdisp->slock, flags);
1170 if (!test_bit(ST_M2M_RUNNING, &bdisp->state)) {
1171 spin_unlock_irqrestore(&bdisp->slock, flags);
1172 return 0;
1173 }
1174 clear_bit(ST_M2M_SUSPENDED, &bdisp->state);
1175 set_bit(ST_M2M_SUSPENDING, &bdisp->state);
1176 spin_unlock_irqrestore(&bdisp->slock, flags);
1177
1178 timeout = wait_event_timeout(bdisp->irq_queue,
1179 test_bit(ST_M2M_SUSPENDED, &bdisp->state),
1180 BDISP_WORK_TIMEOUT);
1181
1182 clear_bit(ST_M2M_SUSPENDING, &bdisp->state);
1183
1184 if (!timeout) {
1185 dev_err(bdisp->dev, "%s IRQ timeout\n", __func__);
1186 return -EAGAIN;
1187 }
1188
1189 return 0;
1190}
1191
1192static int bdisp_m2m_resume(struct bdisp_dev *bdisp)
1193{
1194 struct bdisp_ctx *ctx;
1195 unsigned long flags;
1196
1197 spin_lock_irqsave(&bdisp->slock, flags);
1198 ctx = bdisp->m2m.ctx;
1199 bdisp->m2m.ctx = NULL;
1200 spin_unlock_irqrestore(&bdisp->slock, flags);
1201
1202 if (test_and_clear_bit(ST_M2M_SUSPENDED, &bdisp->state))
1203 bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR);
1204
1205 return 0;
1206}
1207
1208static int bdisp_runtime_resume(struct device *dev)
1209{
1210 struct bdisp_dev *bdisp = dev_get_drvdata(dev);
1211 int ret = clk_enable(bdisp->clock);
1212
1213 if (ret)
1214 return ret;
1215
1216 return bdisp_m2m_resume(bdisp);
1217}
1218
1219static int bdisp_runtime_suspend(struct device *dev)
1220{
1221 struct bdisp_dev *bdisp = dev_get_drvdata(dev);
1222 int ret = bdisp_m2m_suspend(bdisp);
1223
1224 if (!ret)
1225 clk_disable(bdisp->clock);
1226
1227 return ret;
1228}
1229
1230static int bdisp_resume(struct device *dev)
1231{
1232 struct bdisp_dev *bdisp = dev_get_drvdata(dev);
1233 unsigned long flags;
1234 int opened;
1235
1236 spin_lock_irqsave(&bdisp->slock, flags);
1237 opened = test_bit(ST_M2M_OPEN, &bdisp->state);
1238 spin_unlock_irqrestore(&bdisp->slock, flags);
1239
1240 if (!opened)
1241 return 0;
1242
1243 if (!pm_runtime_suspended(dev))
1244 return bdisp_runtime_resume(dev);
1245
1246 return 0;
1247}
1248
1249static int bdisp_suspend(struct device *dev)
1250{
1251 if (!pm_runtime_suspended(dev))
1252 return bdisp_runtime_suspend(dev);
1253
1254 return 0;
1255}
1256
1257static const struct dev_pm_ops bdisp_pm_ops = {
1258 .suspend = bdisp_suspend,
1259 .resume = bdisp_resume,
1260 .runtime_suspend = bdisp_runtime_suspend,
1261 .runtime_resume = bdisp_runtime_resume,
1262};
1263
1264static int bdisp_remove(struct platform_device *pdev)
1265{
1266 struct bdisp_dev *bdisp = platform_get_drvdata(pdev);
1267
1268 bdisp_unregister_device(bdisp);
1269
1270 bdisp_hw_free_filters(bdisp->dev);
1271
28ffeebb
FD		 1272 pm_runtime_disable(&pdev->dev);
1273
34b6beb6
FD		 1274 bdisp_debugfs_remove(bdisp);
1275
28ffeebb
FD		 1276 v4l2_device_unregister(&bdisp->v4l2_dev);
1277
1278 if (!IS_ERR(bdisp->clock))
1279 clk_unprepare(bdisp->clock);
1280
1281 dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name);
1282
1283 return 0;
1284}
1285
1286static int bdisp_probe(struct platform_device *pdev)
1287{
1288 struct bdisp_dev *bdisp;
1289 struct resource *res;
1290 struct device *dev = &pdev->dev;
1291 int ret;
1292
1293 dev_dbg(dev, "%s\n", __func__);
1294
1295 bdisp = devm_kzalloc(dev, sizeof(struct bdisp_dev), GFP_KERNEL);
1296 if (!bdisp)
1297 return -ENOMEM;
1298
1299 bdisp->pdev = pdev;
1300 bdisp->dev = dev;
1301 platform_set_drvdata(pdev, bdisp);
1302
1303 if (dev->of_node)
1304 bdisp->id = of_alias_get_id(pdev->dev.of_node, BDISP_NAME);
1305 else
1306 bdisp->id = pdev->id;
1307
1308 init_waitqueue_head(&bdisp->irq_queue);
1309 INIT_DELAYED_WORK(&bdisp->timeout_work, bdisp_irq_timeout);
1310 bdisp->work_queue = create_workqueue(BDISP_NAME);
1311
1312 spin_lock_init(&bdisp->slock);
1313 mutex_init(&bdisp->lock);
1314
1315 /* get resources */
1316 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1317 bdisp->regs = devm_ioremap_resource(dev, res);
1318 if (IS_ERR(bdisp->regs)) {
1319 dev_err(dev, "failed to get regs\n");
1320 return PTR_ERR(bdisp->regs);
1321 }
1322
1323 bdisp->clock = devm_clk_get(dev, BDISP_NAME);
1324 if (IS_ERR(bdisp->clock)) {
1325 dev_err(dev, "failed to get clock\n");
1326 return PTR_ERR(bdisp->clock);
1327 }
1328
1329 ret = clk_prepare(bdisp->clock);
1330 if (ret < 0) {
1331 dev_err(dev, "clock prepare failed\n");
1332 bdisp->clock = ERR_PTR(-EINVAL);
1333 return ret;
1334 }
1335
1336 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1337 if (!res) {
1338 dev_err(dev, "failed to get IRQ resource\n");
017f4fb7 1339 ret = -EINVAL;
28ffeebb
FD		 1340 goto err_clk;
1341 }
1342
1343 ret = devm_request_threaded_irq(dev, res->start, bdisp_irq_handler,
1344 bdisp_irq_thread, IRQF_ONESHOT,
1345 pdev->name, bdisp);
1346 if (ret) {
1347 dev_err(dev, "failed to install irq\n");
1348 goto err_clk;
1349 }
1350
1351 /* v4l2 register */
1352 ret = v4l2_device_register(dev, &bdisp->v4l2_dev);
1353 if (ret) {
1354 dev_err(dev, "failed to register\n");
1355 goto err_clk;
1356 }
1357
34b6beb6
FD		 1358 /* Debug */
1359 ret = bdisp_debugfs_create(bdisp);
1360 if (ret) {
1361 dev_err(dev, "failed to create debugfs\n");
1362 goto err_v4l2;
1363 }
1364
28ffeebb
FD		 1365 /* Power management */
1366 pm_runtime_enable(dev);
1367 ret = pm_runtime_get_sync(dev);
1368 if (ret < 0) {
1369 dev_err(dev, "failed to set PM\n");
34b6beb6 1370 goto err_dbg;
28ffeebb
FD		 1371 }
1372
28ffeebb
FD		 1373 /* Filters */
1374 if (bdisp_hw_alloc_filters(bdisp->dev)) {
1375 dev_err(bdisp->dev, "no memory for filters\n");
1376 ret = -ENOMEM;
dce57314 1377 goto err_pm;
28ffeebb
FD		 1378 }
1379
1380 /* Register */
1381 ret = bdisp_register_device(bdisp);
1382 if (ret) {
1383 dev_err(dev, "failed to register\n");
1384 goto err_filter;
1385 }
1386
1387 dev_info(dev, "%s%d registered as /dev/video%d\n", BDISP_NAME,
1388 bdisp->id, bdisp->vdev.num);
1389
1390 pm_runtime_put(dev);
1391
1392 return 0;
1393
1394err_filter:
1395 bdisp_hw_free_filters(bdisp->dev);
28ffeebb
FD		 1396err_pm:
1397 pm_runtime_put(dev);
34b6beb6
FD		 1398err_dbg:
1399 bdisp_debugfs_remove(bdisp);
28ffeebb
FD		 1400err_v4l2:
1401 v4l2_device_unregister(&bdisp->v4l2_dev);
1402err_clk:
1403 if (!IS_ERR(bdisp->clock))
1404 clk_unprepare(bdisp->clock);
1405
1406 return ret;
1407}
1408
1409static const struct of_device_id bdisp_match_types[] = {
1410 {
1411 .compatible = "st,stih407-bdisp",
1412 },
1413 { /* end node */ }
1414};
1415
1416MODULE_DEVICE_TABLE(of, bdisp_match_types);
1417
1418static struct platform_driver bdisp_driver = {
1419 .probe = bdisp_probe,
1420 .remove = bdisp_remove,
1421 .driver = {
1422 .name = BDISP_NAME,
1423 .of_match_table = bdisp_match_types,
1424 .pm = &bdisp_pm_ops,
1425 },
1426};
1427
1428module_platform_driver(bdisp_driver);
1429
1430MODULE_DESCRIPTION("2D blitter for STMicroelectronics SoC");
1431MODULE_AUTHOR("Fabien Dessenne <fabien.dessenne@st.com>");
1432MODULE_LICENSE("GPL");
ubuntu-bionic-kernel mirror