2 * Samsung S5P SoC series camera interface (camera capture) driver
4 * Copyright (c) 2010 Samsung Electronics Co., Ltd
5 * Author: Sylwester Nawrocki, <s.nawrocki@samsung.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/version.h>
15 #include <linux/types.h>
16 #include <linux/errno.h>
17 #include <linux/bug.h>
18 #include <linux/interrupt.h>
19 #include <linux/device.h>
20 #include <linux/platform_device.h>
21 #include <linux/list.h>
22 #include <linux/slab.h>
23 #include <linux/clk.h>
24 #include <linux/i2c.h>
26 #include <linux/videodev2.h>
27 #include <media/v4l2-device.h>
28 #include <media/v4l2-ioctl.h>
29 #include <media/v4l2-mem2mem.h>
30 #include <media/videobuf2-core.h>
31 #include <media/videobuf2-dma-contig.h>
33 #include "fimc-core.h"
35 static struct v4l2_subdev *fimc_subdev_register(struct fimc_dev *fimc,
36 struct s5p_fimc_isp_info *isp_info)
38 struct i2c_adapter *i2c_adap;
39 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
40 struct v4l2_subdev *sd = NULL;
42 i2c_adap = i2c_get_adapter(isp_info->i2c_bus_num);
44 return ERR_PTR(-ENOMEM);
46 sd = v4l2_i2c_new_subdev_board(&vid_cap->v4l2_dev, i2c_adap,
47 isp_info->board_info, NULL);
49 v4l2_err(&vid_cap->v4l2_dev, "failed to acquire subdev\n");
53 v4l2_info(&vid_cap->v4l2_dev, "subdevice %s registered successfuly\n",
54 isp_info->board_info->type);
59 static void fimc_subdev_unregister(struct fimc_dev *fimc)
61 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
62 struct i2c_client *client;
64 if (vid_cap->input_index < 0)
65 return; /* Subdevice already released or not registered. */
68 v4l2_device_unregister_subdev(vid_cap->sd);
69 client = v4l2_get_subdevdata(vid_cap->sd);
70 i2c_unregister_device(client);
71 i2c_put_adapter(client->adapter);
75 vid_cap->input_index = -1;
79 * fimc_subdev_attach - attach v4l2_subdev to camera host interface
81 * @fimc: FIMC device information
82 * @index: index to the array of available subdevices,
83 * -1 for full array search or non negative value
84 * to select specific subdevice
86 static int fimc_subdev_attach(struct fimc_dev *fimc, int index)
88 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
89 struct s5p_platform_fimc *pdata = fimc->pdata;
90 struct s5p_fimc_isp_info *isp_info;
91 struct v4l2_subdev *sd;
94 for (i = 0; i < FIMC_MAX_CAMIF_CLIENTS; ++i) {
95 isp_info = pdata->isp_info[i];
97 if (!isp_info || (index >= 0 && i != index))
100 sd = fimc_subdev_register(fimc, isp_info);
101 if (!IS_ERR_OR_NULL(sd)) {
103 vid_cap->input_index = i;
109 vid_cap->input_index = -1;
111 v4l2_err(&vid_cap->v4l2_dev, "fimc%d: sensor attach failed\n",
116 static int fimc_isp_subdev_init(struct fimc_dev *fimc, unsigned int index)
118 struct s5p_fimc_isp_info *isp_info;
121 if (index >= FIMC_MAX_CAMIF_CLIENTS)
124 isp_info = fimc->pdata->isp_info[index];
128 if (isp_info->clk_frequency)
129 clk_set_rate(fimc->clock[CLK_CAM], isp_info->clk_frequency);
131 ret = clk_enable(fimc->clock[CLK_CAM]);
135 ret = fimc_subdev_attach(fimc, index);
139 ret = fimc_hw_set_camera_polarity(fimc, isp_info);
143 ret = v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 1);
147 /* enabling power failed so unregister subdev */
148 fimc_subdev_unregister(fimc);
150 v4l2_err(&fimc->vid_cap.v4l2_dev, "ISP initialization failed: %d\n",
156 static int fimc_stop_capture(struct fimc_dev *fimc)
159 struct fimc_vid_cap *cap;
160 struct fimc_vid_buffer *buf;
162 cap = &fimc->vid_cap;
164 if (!fimc_capture_active(fimc))
167 spin_lock_irqsave(&fimc->slock, flags);
168 set_bit(ST_CAPT_SHUT, &fimc->state);
169 fimc_deactivate_capture(fimc);
170 spin_unlock_irqrestore(&fimc->slock, flags);
172 wait_event_timeout(fimc->irq_queue,
173 !test_bit(ST_CAPT_SHUT, &fimc->state),
174 FIMC_SHUTDOWN_TIMEOUT);
176 v4l2_subdev_call(cap->sd, video, s_stream, 0);
178 spin_lock_irqsave(&fimc->slock, flags);
179 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_PEND |
180 1 << ST_CAPT_SHUT | 1 << ST_CAPT_STREAM);
182 fimc->vid_cap.active_buf_cnt = 0;
184 /* Release buffers that were enqueued in the driver by videobuf2. */
185 while (!list_empty(&cap->pending_buf_q)) {
186 buf = pending_queue_pop(cap);
187 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
190 while (!list_empty(&cap->active_buf_q)) {
191 buf = active_queue_pop(cap);
192 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
195 spin_unlock_irqrestore(&fimc->slock, flags);
197 dbg("state: 0x%lx", fimc->state);
201 static int start_streaming(struct vb2_queue *q)
203 struct fimc_ctx *ctx = q->drv_priv;
204 struct fimc_dev *fimc = ctx->fimc_dev;
205 struct s5p_fimc_isp_info *isp_info;
210 ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_stream, 1);
211 if (ret && ret != -ENOIOCTLCMD)
214 ret = fimc_prepare_config(ctx, ctx->state);
218 isp_info = fimc->pdata->isp_info[fimc->vid_cap.input_index];
219 fimc_hw_set_camera_type(fimc, isp_info);
220 fimc_hw_set_camera_source(fimc, isp_info);
221 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
223 if (ctx->state & FIMC_PARAMS) {
224 ret = fimc_set_scaler_info(ctx);
226 err("Scaler setup error");
229 fimc_hw_set_input_path(ctx);
230 fimc_hw_set_prescaler(ctx);
231 fimc_hw_set_mainscaler(ctx);
232 fimc_hw_set_target_format(ctx);
233 fimc_hw_set_rotation(ctx);
234 fimc_hw_set_effect(ctx);
237 fimc_hw_set_output_path(ctx);
238 fimc_hw_set_out_dma(ctx);
240 INIT_LIST_HEAD(&fimc->vid_cap.pending_buf_q);
241 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
242 fimc->vid_cap.active_buf_cnt = 0;
243 fimc->vid_cap.frame_count = 0;
244 fimc->vid_cap.buf_index = 0;
246 set_bit(ST_CAPT_PEND, &fimc->state);
251 static int stop_streaming(struct vb2_queue *q)
253 struct fimc_ctx *ctx = q->drv_priv;
254 struct fimc_dev *fimc = ctx->fimc_dev;
256 if (!fimc_capture_active(fimc))
259 return fimc_stop_capture(fimc);
262 static unsigned int get_plane_size(struct fimc_frame *fr, unsigned int plane)
264 if (!fr || plane >= fr->fmt->memplanes)
267 dbg("%s: w: %d. h: %d. depth[%d]: %d",
268 __func__, fr->width, fr->height, plane, fr->fmt->depth[plane]);
270 return fr->f_width * fr->f_height * fr->fmt->depth[plane] / 8;
274 static int queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
275 unsigned int *num_planes, unsigned long sizes[],
278 struct fimc_ctx *ctx = vq->drv_priv;
279 struct fimc_fmt *fmt = ctx->d_frame.fmt;
285 *num_planes = fmt->memplanes;
287 dbg("%s, buffer count=%d, plane count=%d",
288 __func__, *num_buffers, *num_planes);
290 for (i = 0; i < fmt->memplanes; i++) {
291 sizes[i] = get_plane_size(&ctx->d_frame, i);
292 dbg("plane: %u, plane_size: %lu", i, sizes[i]);
293 allocators[i] = ctx->fimc_dev->alloc_ctx;
299 static int buffer_init(struct vb2_buffer *vb)
305 static int buffer_prepare(struct vb2_buffer *vb)
307 struct vb2_queue *vq = vb->vb2_queue;
308 struct fimc_ctx *ctx = vq->drv_priv;
309 struct v4l2_device *v4l2_dev = &ctx->fimc_dev->m2m.v4l2_dev;
312 if (!ctx->d_frame.fmt || vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
315 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
316 unsigned long size = get_plane_size(&ctx->d_frame, i);
318 if (vb2_plane_size(vb, i) < size) {
319 v4l2_err(v4l2_dev, "User buffer too small (%ld < %ld)\n",
320 vb2_plane_size(vb, i), size);
324 vb2_set_plane_payload(vb, i, size);
330 static void buffer_queue(struct vb2_buffer *vb)
332 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
333 struct fimc_dev *fimc = ctx->fimc_dev;
334 struct fimc_vid_buffer *buf
335 = container_of(vb, struct fimc_vid_buffer, vb);
336 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
340 spin_lock_irqsave(&fimc->slock, flags);
341 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
343 if (!test_bit(ST_CAPT_STREAM, &fimc->state)
344 && vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
345 /* Setup the buffer directly for processing. */
346 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
349 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
350 buf->index = vid_cap->buf_index;
351 active_queue_add(vid_cap, buf);
353 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
354 vid_cap->buf_index = 0;
356 fimc_pending_queue_add(vid_cap, buf);
359 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
361 if (vid_cap->active_buf_cnt >= min_bufs &&
362 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state))
363 fimc_activate_capture(ctx);
365 spin_unlock_irqrestore(&fimc->slock, flags);
368 static void fimc_lock(struct vb2_queue *vq)
370 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
371 mutex_lock(&ctx->fimc_dev->lock);
374 static void fimc_unlock(struct vb2_queue *vq)
376 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
377 mutex_unlock(&ctx->fimc_dev->lock);
380 static struct vb2_ops fimc_capture_qops = {
381 .queue_setup = queue_setup,
382 .buf_prepare = buffer_prepare,
383 .buf_queue = buffer_queue,
384 .buf_init = buffer_init,
385 .wait_prepare = fimc_unlock,
386 .wait_finish = fimc_lock,
387 .start_streaming = start_streaming,
388 .stop_streaming = stop_streaming,
391 static int fimc_capture_open(struct file *file)
393 struct fimc_dev *fimc = video_drvdata(file);
396 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
398 /* Return if the corresponding video mem2mem node is already opened. */
399 if (fimc_m2m_active(fimc))
402 if (++fimc->vid_cap.refcnt == 1) {
403 ret = fimc_isp_subdev_init(fimc, 0);
405 fimc->vid_cap.refcnt--;
410 file->private_data = fimc->vid_cap.ctx;
415 static int fimc_capture_close(struct file *file)
417 struct fimc_dev *fimc = video_drvdata(file);
419 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
421 if (--fimc->vid_cap.refcnt == 0) {
422 fimc_stop_capture(fimc);
423 vb2_queue_release(&fimc->vid_cap.vbq);
425 v4l2_err(&fimc->vid_cap.v4l2_dev, "releasing ISP\n");
427 v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
428 clk_disable(fimc->clock[CLK_CAM]);
429 fimc_subdev_unregister(fimc);
435 static unsigned int fimc_capture_poll(struct file *file,
436 struct poll_table_struct *wait)
438 struct fimc_ctx *ctx = file->private_data;
439 struct fimc_dev *fimc = ctx->fimc_dev;
441 return vb2_poll(&fimc->vid_cap.vbq, file, wait);
444 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
446 struct fimc_ctx *ctx = file->private_data;
447 struct fimc_dev *fimc = ctx->fimc_dev;
449 return vb2_mmap(&fimc->vid_cap.vbq, vma);
452 /* video device file operations */
453 static const struct v4l2_file_operations fimc_capture_fops = {
454 .owner = THIS_MODULE,
455 .open = fimc_capture_open,
456 .release = fimc_capture_close,
457 .poll = fimc_capture_poll,
458 .unlocked_ioctl = video_ioctl2,
459 .mmap = fimc_capture_mmap,
462 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
463 struct v4l2_capability *cap)
465 struct fimc_ctx *ctx = file->private_data;
466 struct fimc_dev *fimc = ctx->fimc_dev;
468 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
469 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
470 cap->bus_info[0] = 0;
471 cap->version = KERNEL_VERSION(1, 0, 0);
472 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE |
473 V4L2_CAP_VIDEO_CAPTURE_MPLANE;
478 /* Synchronize formats of the camera interface input and attached sensor. */
479 static int sync_capture_fmt(struct fimc_ctx *ctx)
481 struct fimc_frame *frame = &ctx->s_frame;
482 struct fimc_dev *fimc = ctx->fimc_dev;
483 struct v4l2_mbus_framefmt *fmt = &fimc->vid_cap.fmt;
486 fmt->width = ctx->d_frame.o_width;
487 fmt->height = ctx->d_frame.o_height;
489 ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_mbus_fmt, fmt);
490 if (ret == -ENOIOCTLCMD) {
491 err("s_mbus_fmt failed");
494 dbg("w: %d, h: %d, code= %d", fmt->width, fmt->height, fmt->code);
496 frame->fmt = find_mbus_format(fmt, FMT_FLAGS_CAM);
498 err("fimc source format not found\n");
502 frame->f_width = fmt->width;
503 frame->f_height = fmt->height;
504 frame->width = fmt->width;
505 frame->height = fmt->height;
506 frame->o_width = fmt->width;
507 frame->o_height = fmt->height;
514 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
515 struct v4l2_format *f)
517 struct fimc_ctx *ctx = priv;
518 struct fimc_dev *fimc = ctx->fimc_dev;
519 struct fimc_frame *frame;
520 struct v4l2_pix_format_mplane *pix;
524 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
527 ret = fimc_vidioc_try_fmt_mplane(file, priv, f);
531 if (vb2_is_streaming(&fimc->vid_cap.vbq) || fimc_capture_active(fimc))
534 frame = &ctx->d_frame;
536 pix = &f->fmt.pix_mp;
537 frame->fmt = find_format(f, FMT_FLAGS_M2M | FMT_FLAGS_CAM);
539 err("fimc target format not found\n");
543 for (i = 0; i < frame->fmt->colplanes; i++)
544 frame->payload[i] = pix->plane_fmt[i].bytesperline * pix->height;
546 /* Output DMA frame pixel size and offsets. */
547 frame->f_width = pix->plane_fmt[0].bytesperline * 8
548 / frame->fmt->depth[0];
549 frame->f_height = pix->height;
550 frame->width = pix->width;
551 frame->height = pix->height;
552 frame->o_width = pix->width;
553 frame->o_height = pix->height;
557 ctx->state |= (FIMC_PARAMS | FIMC_DST_FMT);
559 ret = sync_capture_fmt(ctx);
563 static int fimc_cap_enum_input(struct file *file, void *priv,
564 struct v4l2_input *i)
566 struct fimc_ctx *ctx = priv;
567 struct s5p_platform_fimc *pldata = ctx->fimc_dev->pdata;
568 struct s5p_fimc_isp_info *isp_info;
570 if (i->index >= FIMC_MAX_CAMIF_CLIENTS)
573 isp_info = pldata->isp_info[i->index];
574 if (isp_info == NULL)
577 i->type = V4L2_INPUT_TYPE_CAMERA;
578 strncpy(i->name, isp_info->board_info->type, 32);
582 static int fimc_cap_s_input(struct file *file, void *priv,
585 struct fimc_ctx *ctx = priv;
586 struct fimc_dev *fimc = ctx->fimc_dev;
587 struct s5p_platform_fimc *pdata = fimc->pdata;
589 if (fimc_capture_active(ctx->fimc_dev))
592 if (i >= FIMC_MAX_CAMIF_CLIENTS || !pdata->isp_info[i])
596 if (fimc->vid_cap.sd) {
597 int ret = v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
599 err("s_power failed: %d", ret);
601 clk_disable(fimc->clock[CLK_CAM]);
604 /* Release the attached sensor subdevice. */
605 fimc_subdev_unregister(fimc);
607 return fimc_isp_subdev_init(fimc, i);
610 static int fimc_cap_g_input(struct file *file, void *priv,
613 struct fimc_ctx *ctx = priv;
614 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
616 *i = cap->input_index;
620 static int fimc_cap_streamon(struct file *file, void *priv,
621 enum v4l2_buf_type type)
623 struct fimc_ctx *ctx = priv;
624 struct fimc_dev *fimc = ctx->fimc_dev;
626 if (fimc_capture_active(fimc) || !fimc->vid_cap.sd)
629 if (!(ctx->state & FIMC_DST_FMT)) {
630 v4l2_err(&fimc->vid_cap.v4l2_dev, "Format is not set\n");
634 return vb2_streamon(&fimc->vid_cap.vbq, type);
637 static int fimc_cap_streamoff(struct file *file, void *priv,
638 enum v4l2_buf_type type)
640 struct fimc_ctx *ctx = priv;
641 struct fimc_dev *fimc = ctx->fimc_dev;
643 return vb2_streamoff(&fimc->vid_cap.vbq, type);
646 static int fimc_cap_reqbufs(struct file *file, void *priv,
647 struct v4l2_requestbuffers *reqbufs)
649 struct fimc_ctx *ctx = priv;
650 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
654 ret = vb2_reqbufs(&cap->vbq, reqbufs);
656 cap->reqbufs_count = reqbufs->count;
661 static int fimc_cap_querybuf(struct file *file, void *priv,
662 struct v4l2_buffer *buf)
664 struct fimc_ctx *ctx = priv;
665 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
667 return vb2_querybuf(&cap->vbq, buf);
670 static int fimc_cap_qbuf(struct file *file, void *priv,
671 struct v4l2_buffer *buf)
673 struct fimc_ctx *ctx = priv;
674 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
675 return vb2_qbuf(&cap->vbq, buf);
678 static int fimc_cap_dqbuf(struct file *file, void *priv,
679 struct v4l2_buffer *buf)
681 struct fimc_ctx *ctx = priv;
682 return vb2_dqbuf(&ctx->fimc_dev->vid_cap.vbq, buf,
683 file->f_flags & O_NONBLOCK);
686 static int fimc_cap_s_ctrl(struct file *file, void *priv,
687 struct v4l2_control *ctrl)
689 struct fimc_ctx *ctx = priv;
692 /* Allow any controls but 90/270 rotation while streaming */
693 if (!fimc_capture_active(ctx->fimc_dev) ||
694 ctrl->id != V4L2_CID_ROTATE ||
695 (ctrl->value != 90 && ctrl->value != 270)) {
696 ret = check_ctrl_val(ctx, ctrl);
698 ret = fimc_s_ctrl(ctx, ctrl);
700 ctx->state |= FIMC_PARAMS;
704 ret = v4l2_subdev_call(ctx->fimc_dev->vid_cap.sd,
709 static int fimc_cap_cropcap(struct file *file, void *fh,
710 struct v4l2_cropcap *cr)
712 struct fimc_frame *f;
713 struct fimc_ctx *ctx = fh;
715 if (cr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
722 cr->bounds.width = f->o_width;
723 cr->bounds.height = f->o_height;
724 cr->defrect = cr->bounds;
729 static int fimc_cap_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
731 struct fimc_frame *f;
732 struct fimc_ctx *ctx = file->private_data;
736 cr->c.left = f->offs_h;
737 cr->c.top = f->offs_v;
738 cr->c.width = f->width;
739 cr->c.height = f->height;
744 static int fimc_cap_s_crop(struct file *file, void *fh,
745 struct v4l2_crop *cr)
747 struct fimc_frame *f;
748 struct fimc_ctx *ctx = file->private_data;
749 struct fimc_dev *fimc = ctx->fimc_dev;
752 if (fimc_capture_active(fimc))
755 ret = fimc_try_crop(ctx, cr);
759 if (!(ctx->state & FIMC_DST_FMT)) {
760 v4l2_err(&fimc->vid_cap.v4l2_dev,
761 "Capture color format not set\n");
762 return -EINVAL; /* TODO: make sure this is the right value */
766 /* Check for the pixel scaling ratio when cropping input image. */
767 ret = fimc_check_scaler_ratio(cr->c.width, cr->c.height,
768 ctx->d_frame.width, ctx->d_frame.height,
771 v4l2_err(&fimc->vid_cap.v4l2_dev, "Out of the scaler range\n");
775 f->offs_h = cr->c.left;
776 f->offs_v = cr->c.top;
777 f->width = cr->c.width;
778 f->height = cr->c.height;
784 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
785 .vidioc_querycap = fimc_vidioc_querycap_capture,
787 .vidioc_enum_fmt_vid_cap_mplane = fimc_vidioc_enum_fmt_mplane,
788 .vidioc_try_fmt_vid_cap_mplane = fimc_vidioc_try_fmt_mplane,
789 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
790 .vidioc_g_fmt_vid_cap_mplane = fimc_vidioc_g_fmt_mplane,
792 .vidioc_reqbufs = fimc_cap_reqbufs,
793 .vidioc_querybuf = fimc_cap_querybuf,
795 .vidioc_qbuf = fimc_cap_qbuf,
796 .vidioc_dqbuf = fimc_cap_dqbuf,
798 .vidioc_streamon = fimc_cap_streamon,
799 .vidioc_streamoff = fimc_cap_streamoff,
801 .vidioc_queryctrl = fimc_vidioc_queryctrl,
802 .vidioc_g_ctrl = fimc_vidioc_g_ctrl,
803 .vidioc_s_ctrl = fimc_cap_s_ctrl,
805 .vidioc_g_crop = fimc_cap_g_crop,
806 .vidioc_s_crop = fimc_cap_s_crop,
807 .vidioc_cropcap = fimc_cap_cropcap,
809 .vidioc_enum_input = fimc_cap_enum_input,
810 .vidioc_s_input = fimc_cap_s_input,
811 .vidioc_g_input = fimc_cap_g_input,
814 /* fimc->lock must be already initialized */
815 int fimc_register_capture_device(struct fimc_dev *fimc)
817 struct v4l2_device *v4l2_dev = &fimc->vid_cap.v4l2_dev;
818 struct video_device *vfd;
819 struct fimc_vid_cap *vid_cap;
820 struct fimc_ctx *ctx;
821 struct v4l2_format f;
822 struct fimc_frame *fr;
826 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
830 ctx->fimc_dev = fimc;
831 ctx->in_path = FIMC_CAMERA;
832 ctx->out_path = FIMC_DMA;
833 ctx->state = FIMC_CTX_CAP;
835 /* Default format of the output frames */
836 f.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB32;
838 fr->fmt = find_format(&f, FMT_FLAGS_M2M);
839 fr->width = fr->f_width = fr->o_width = 640;
840 fr->height = fr->f_height = fr->o_height = 480;
842 if (!v4l2_dev->name[0])
843 snprintf(v4l2_dev->name, sizeof(v4l2_dev->name),
844 "%s.capture", dev_name(&fimc->pdev->dev));
846 ret = v4l2_device_register(NULL, v4l2_dev);
850 vfd = video_device_alloc();
852 v4l2_err(v4l2_dev, "Failed to allocate video device\n");
856 snprintf(vfd->name, sizeof(vfd->name), "%s:cap",
857 dev_name(&fimc->pdev->dev));
859 vfd->fops = &fimc_capture_fops;
860 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
862 vfd->release = video_device_release;
863 vfd->lock = &fimc->lock;
864 video_set_drvdata(vfd, fimc);
866 vid_cap = &fimc->vid_cap;
868 vid_cap->active_buf_cnt = 0;
869 vid_cap->reqbufs_count = 0;
871 /* Default color format for image sensor */
872 vid_cap->fmt.code = V4L2_MBUS_FMT_YUYV8_2X8;
874 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
875 INIT_LIST_HEAD(&vid_cap->active_buf_q);
876 spin_lock_init(&ctx->slock);
879 q = &fimc->vid_cap.vbq;
880 memset(q, 0, sizeof(*q));
881 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
882 q->io_modes = VB2_MMAP | VB2_USERPTR;
883 q->drv_priv = fimc->vid_cap.ctx;
884 q->ops = &fimc_capture_qops;
885 q->mem_ops = &vb2_dma_contig_memops;
886 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
890 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
892 v4l2_err(v4l2_dev, "Failed to register video device\n");
897 "FIMC capture driver registered as /dev/video%d\n",
903 video_device_release(vfd);
905 v4l2_device_unregister(v4l2_dev);
907 dev_err(&fimc->pdev->dev, "failed to install\n");
911 void fimc_unregister_capture_device(struct fimc_dev *fimc)
913 struct fimc_vid_cap *capture = &fimc->vid_cap;
916 video_unregister_device(capture->vfd);