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);
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;
257 spin_lock_irqsave(&fimc->slock, flags);
258 if (!fimc_capture_running(fimc) && !fimc_capture_pending(fimc)) {
259 spin_unlock_irqrestore(&fimc->slock, flags);
262 spin_unlock_irqrestore(&fimc->slock, flags);
264 return fimc_stop_capture(fimc);
267 static unsigned int get_plane_size(struct fimc_frame *fr, unsigned int plane)
269 if (!fr || plane >= fr->fmt->memplanes)
272 dbg("%s: w: %d. h: %d. depth[%d]: %d",
273 __func__, fr->width, fr->height, plane, fr->fmt->depth[plane]);
275 return fr->f_width * fr->f_height * fr->fmt->depth[plane] / 8;
279 static int queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
280 unsigned int *num_planes, unsigned long sizes[],
283 struct fimc_ctx *ctx = vq->drv_priv;
284 struct fimc_fmt *fmt = ctx->d_frame.fmt;
290 *num_planes = fmt->memplanes;
292 dbg("%s, buffer count=%d, plane count=%d",
293 __func__, *num_buffers, *num_planes);
295 for (i = 0; i < fmt->memplanes; i++) {
296 sizes[i] = get_plane_size(&ctx->d_frame, i);
297 dbg("plane: %u, plane_size: %lu", i, sizes[i]);
298 allocators[i] = ctx->fimc_dev->alloc_ctx;
304 static int buffer_init(struct vb2_buffer *vb)
310 static int buffer_prepare(struct vb2_buffer *vb)
312 struct vb2_queue *vq = vb->vb2_queue;
313 struct fimc_ctx *ctx = vq->drv_priv;
314 struct v4l2_device *v4l2_dev = &ctx->fimc_dev->m2m.v4l2_dev;
317 if (!ctx->d_frame.fmt || vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
320 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
321 unsigned long size = get_plane_size(&ctx->d_frame, i);
323 if (vb2_plane_size(vb, i) < size) {
324 v4l2_err(v4l2_dev, "User buffer too small (%ld < %ld)\n",
325 vb2_plane_size(vb, i), size);
329 vb2_set_plane_payload(vb, i, size);
335 static void buffer_queue(struct vb2_buffer *vb)
337 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
338 struct fimc_dev *fimc = ctx->fimc_dev;
339 struct fimc_vid_buffer *buf
340 = container_of(vb, struct fimc_vid_buffer, vb);
341 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
345 spin_lock_irqsave(&fimc->slock, flags);
346 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
348 if (!test_bit(ST_CAPT_STREAM, &fimc->state)
349 && vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
350 /* Setup the buffer directly for processing. */
351 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
354 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
355 buf->index = vid_cap->buf_index;
356 active_queue_add(vid_cap, buf);
358 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
359 vid_cap->buf_index = 0;
361 fimc_pending_queue_add(vid_cap, buf);
364 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
366 if (vid_cap->active_buf_cnt >= min_bufs &&
367 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state))
368 fimc_activate_capture(ctx);
370 spin_unlock_irqrestore(&fimc->slock, flags);
373 static void fimc_lock(struct vb2_queue *vq)
375 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
376 mutex_lock(&ctx->fimc_dev->lock);
379 static void fimc_unlock(struct vb2_queue *vq)
381 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
382 mutex_unlock(&ctx->fimc_dev->lock);
385 static struct vb2_ops fimc_capture_qops = {
386 .queue_setup = queue_setup,
387 .buf_prepare = buffer_prepare,
388 .buf_queue = buffer_queue,
389 .buf_init = buffer_init,
390 .wait_prepare = fimc_unlock,
391 .wait_finish = fimc_lock,
392 .start_streaming = start_streaming,
393 .stop_streaming = stop_streaming,
396 static int fimc_capture_open(struct file *file)
398 struct fimc_dev *fimc = video_drvdata(file);
401 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
403 /* Return if the corresponding video mem2mem node is already opened. */
404 if (fimc_m2m_active(fimc))
407 if (++fimc->vid_cap.refcnt == 1) {
408 ret = fimc_isp_subdev_init(fimc, 0);
410 fimc->vid_cap.refcnt--;
415 file->private_data = fimc->vid_cap.ctx;
420 static int fimc_capture_close(struct file *file)
422 struct fimc_dev *fimc = video_drvdata(file);
424 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
426 if (--fimc->vid_cap.refcnt == 0) {
427 fimc_stop_capture(fimc);
428 vb2_queue_release(&fimc->vid_cap.vbq);
430 v4l2_err(&fimc->vid_cap.v4l2_dev, "releasing ISP\n");
432 v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
433 clk_disable(fimc->clock[CLK_CAM]);
434 fimc_subdev_unregister(fimc);
440 static unsigned int fimc_capture_poll(struct file *file,
441 struct poll_table_struct *wait)
443 struct fimc_ctx *ctx = file->private_data;
444 struct fimc_dev *fimc = ctx->fimc_dev;
446 return vb2_poll(&fimc->vid_cap.vbq, file, wait);
449 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
451 struct fimc_ctx *ctx = file->private_data;
452 struct fimc_dev *fimc = ctx->fimc_dev;
454 return vb2_mmap(&fimc->vid_cap.vbq, vma);
457 /* video device file operations */
458 static const struct v4l2_file_operations fimc_capture_fops = {
459 .owner = THIS_MODULE,
460 .open = fimc_capture_open,
461 .release = fimc_capture_close,
462 .poll = fimc_capture_poll,
463 .unlocked_ioctl = video_ioctl2,
464 .mmap = fimc_capture_mmap,
467 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
468 struct v4l2_capability *cap)
470 struct fimc_ctx *ctx = file->private_data;
471 struct fimc_dev *fimc = ctx->fimc_dev;
473 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
474 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
475 cap->bus_info[0] = 0;
476 cap->version = KERNEL_VERSION(1, 0, 0);
477 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE |
478 V4L2_CAP_VIDEO_CAPTURE_MPLANE;
483 /* Synchronize formats of the camera interface input and attached sensor. */
484 static int sync_capture_fmt(struct fimc_ctx *ctx)
486 struct fimc_frame *frame = &ctx->s_frame;
487 struct fimc_dev *fimc = ctx->fimc_dev;
488 struct v4l2_mbus_framefmt *fmt = &fimc->vid_cap.fmt;
491 fmt->width = ctx->d_frame.o_width;
492 fmt->height = ctx->d_frame.o_height;
494 ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_mbus_fmt, fmt);
495 if (ret == -ENOIOCTLCMD) {
496 err("s_mbus_fmt failed");
499 dbg("w: %d, h: %d, code= %d", fmt->width, fmt->height, fmt->code);
501 frame->fmt = find_mbus_format(fmt, FMT_FLAGS_CAM);
503 err("fimc source format not found\n");
507 frame->f_width = fmt->width;
508 frame->f_height = fmt->height;
509 frame->width = fmt->width;
510 frame->height = fmt->height;
511 frame->o_width = fmt->width;
512 frame->o_height = fmt->height;
519 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
520 struct v4l2_format *f)
522 struct fimc_ctx *ctx = priv;
523 struct fimc_dev *fimc = ctx->fimc_dev;
524 struct fimc_frame *frame;
525 struct v4l2_pix_format_mplane *pix;
529 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
532 ret = fimc_vidioc_try_fmt_mplane(file, priv, f);
536 if (vb2_is_streaming(&fimc->vid_cap.vbq) || fimc_capture_active(fimc))
539 frame = &ctx->d_frame;
541 pix = &f->fmt.pix_mp;
542 frame->fmt = find_format(f, FMT_FLAGS_M2M | FMT_FLAGS_CAM);
544 err("fimc target format not found\n");
548 for (i = 0; i < frame->fmt->colplanes; i++)
549 frame->payload[i] = pix->plane_fmt[i].bytesperline * pix->height;
551 /* Output DMA frame pixel size and offsets. */
552 frame->f_width = pix->plane_fmt[0].bytesperline * 8
553 / frame->fmt->depth[0];
554 frame->f_height = pix->height;
555 frame->width = pix->width;
556 frame->height = pix->height;
557 frame->o_width = pix->width;
558 frame->o_height = pix->height;
562 ctx->state |= (FIMC_PARAMS | FIMC_DST_FMT);
564 ret = sync_capture_fmt(ctx);
568 static int fimc_cap_enum_input(struct file *file, void *priv,
569 struct v4l2_input *i)
571 struct fimc_ctx *ctx = priv;
572 struct s5p_platform_fimc *pldata = ctx->fimc_dev->pdata;
573 struct s5p_fimc_isp_info *isp_info;
575 if (i->index >= FIMC_MAX_CAMIF_CLIENTS)
578 isp_info = pldata->isp_info[i->index];
579 if (isp_info == NULL)
582 i->type = V4L2_INPUT_TYPE_CAMERA;
583 strncpy(i->name, isp_info->board_info->type, 32);
587 static int fimc_cap_s_input(struct file *file, void *priv,
590 struct fimc_ctx *ctx = priv;
591 struct fimc_dev *fimc = ctx->fimc_dev;
592 struct s5p_platform_fimc *pdata = fimc->pdata;
594 if (fimc_capture_active(ctx->fimc_dev))
597 if (i >= FIMC_MAX_CAMIF_CLIENTS || !pdata->isp_info[i])
601 if (fimc->vid_cap.sd) {
602 int ret = v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
604 err("s_power failed: %d", ret);
606 clk_disable(fimc->clock[CLK_CAM]);
609 /* Release the attached sensor subdevice. */
610 fimc_subdev_unregister(fimc);
612 return fimc_isp_subdev_init(fimc, i);
615 static int fimc_cap_g_input(struct file *file, void *priv,
618 struct fimc_ctx *ctx = priv;
619 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
621 *i = cap->input_index;
625 static int fimc_cap_streamon(struct file *file, void *priv,
626 enum v4l2_buf_type type)
628 struct fimc_ctx *ctx = priv;
629 struct fimc_dev *fimc = ctx->fimc_dev;
631 if (fimc_capture_active(fimc) || !fimc->vid_cap.sd)
634 if (!(ctx->state & FIMC_DST_FMT)) {
635 v4l2_err(&fimc->vid_cap.v4l2_dev, "Format is not set\n");
639 return vb2_streamon(&fimc->vid_cap.vbq, type);
642 static int fimc_cap_streamoff(struct file *file, void *priv,
643 enum v4l2_buf_type type)
645 struct fimc_ctx *ctx = priv;
646 struct fimc_dev *fimc = ctx->fimc_dev;
648 return vb2_streamoff(&fimc->vid_cap.vbq, type);
651 static int fimc_cap_reqbufs(struct file *file, void *priv,
652 struct v4l2_requestbuffers *reqbufs)
654 struct fimc_ctx *ctx = priv;
655 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
659 ret = vb2_reqbufs(&cap->vbq, reqbufs);
661 cap->reqbufs_count = reqbufs->count;
666 static int fimc_cap_querybuf(struct file *file, void *priv,
667 struct v4l2_buffer *buf)
669 struct fimc_ctx *ctx = priv;
670 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
672 return vb2_querybuf(&cap->vbq, buf);
675 static int fimc_cap_qbuf(struct file *file, void *priv,
676 struct v4l2_buffer *buf)
678 struct fimc_ctx *ctx = priv;
679 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
680 return vb2_qbuf(&cap->vbq, buf);
683 static int fimc_cap_dqbuf(struct file *file, void *priv,
684 struct v4l2_buffer *buf)
686 struct fimc_ctx *ctx = priv;
687 return vb2_dqbuf(&ctx->fimc_dev->vid_cap.vbq, buf,
688 file->f_flags & O_NONBLOCK);
691 static int fimc_cap_s_ctrl(struct file *file, void *priv,
692 struct v4l2_control *ctrl)
694 struct fimc_ctx *ctx = priv;
697 /* Allow any controls but 90/270 rotation while streaming */
698 if (!fimc_capture_active(ctx->fimc_dev) ||
699 ctrl->id != V4L2_CID_ROTATE ||
700 (ctrl->value != 90 && ctrl->value != 270)) {
701 ret = check_ctrl_val(ctx, ctrl);
703 ret = fimc_s_ctrl(ctx, ctrl);
705 ctx->state |= FIMC_PARAMS;
709 ret = v4l2_subdev_call(ctx->fimc_dev->vid_cap.sd,
714 static int fimc_cap_cropcap(struct file *file, void *fh,
715 struct v4l2_cropcap *cr)
717 struct fimc_frame *f;
718 struct fimc_ctx *ctx = fh;
720 if (cr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
727 cr->bounds.width = f->o_width;
728 cr->bounds.height = f->o_height;
729 cr->defrect = cr->bounds;
734 static int fimc_cap_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
736 struct fimc_frame *f;
737 struct fimc_ctx *ctx = file->private_data;
741 cr->c.left = f->offs_h;
742 cr->c.top = f->offs_v;
743 cr->c.width = f->width;
744 cr->c.height = f->height;
749 static int fimc_cap_s_crop(struct file *file, void *fh,
750 struct v4l2_crop *cr)
752 struct fimc_frame *f;
753 struct fimc_ctx *ctx = file->private_data;
754 struct fimc_dev *fimc = ctx->fimc_dev;
757 if (fimc_capture_active(fimc))
760 ret = fimc_try_crop(ctx, cr);
764 if (!(ctx->state & FIMC_DST_FMT)) {
765 v4l2_err(&fimc->vid_cap.v4l2_dev,
766 "Capture color format not set\n");
767 return -EINVAL; /* TODO: make sure this is the right value */
771 /* Check for the pixel scaling ratio when cropping input image. */
772 ret = fimc_check_scaler_ratio(cr->c.width, cr->c.height,
773 ctx->d_frame.width, ctx->d_frame.height,
776 v4l2_err(&fimc->vid_cap.v4l2_dev, "Out of the scaler range");
780 f->offs_h = cr->c.left;
781 f->offs_v = cr->c.top;
782 f->width = cr->c.width;
783 f->height = cr->c.height;
789 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
790 .vidioc_querycap = fimc_vidioc_querycap_capture,
792 .vidioc_enum_fmt_vid_cap_mplane = fimc_vidioc_enum_fmt_mplane,
793 .vidioc_try_fmt_vid_cap_mplane = fimc_vidioc_try_fmt_mplane,
794 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
795 .vidioc_g_fmt_vid_cap_mplane = fimc_vidioc_g_fmt_mplane,
797 .vidioc_reqbufs = fimc_cap_reqbufs,
798 .vidioc_querybuf = fimc_cap_querybuf,
800 .vidioc_qbuf = fimc_cap_qbuf,
801 .vidioc_dqbuf = fimc_cap_dqbuf,
803 .vidioc_streamon = fimc_cap_streamon,
804 .vidioc_streamoff = fimc_cap_streamoff,
806 .vidioc_queryctrl = fimc_vidioc_queryctrl,
807 .vidioc_g_ctrl = fimc_vidioc_g_ctrl,
808 .vidioc_s_ctrl = fimc_cap_s_ctrl,
810 .vidioc_g_crop = fimc_cap_g_crop,
811 .vidioc_s_crop = fimc_cap_s_crop,
812 .vidioc_cropcap = fimc_cap_cropcap,
814 .vidioc_enum_input = fimc_cap_enum_input,
815 .vidioc_s_input = fimc_cap_s_input,
816 .vidioc_g_input = fimc_cap_g_input,
819 /* fimc->lock must be already initialized */
820 int fimc_register_capture_device(struct fimc_dev *fimc)
822 struct v4l2_device *v4l2_dev = &fimc->vid_cap.v4l2_dev;
823 struct video_device *vfd;
824 struct fimc_vid_cap *vid_cap;
825 struct fimc_ctx *ctx;
826 struct v4l2_format f;
827 struct fimc_frame *fr;
831 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
835 ctx->fimc_dev = fimc;
836 ctx->in_path = FIMC_CAMERA;
837 ctx->out_path = FIMC_DMA;
838 ctx->state = FIMC_CTX_CAP;
840 /* Default format of the output frames */
841 f.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB32;
843 fr->fmt = find_format(&f, FMT_FLAGS_M2M);
844 fr->width = fr->f_width = fr->o_width = 640;
845 fr->height = fr->f_height = fr->o_height = 480;
847 if (!v4l2_dev->name[0])
848 snprintf(v4l2_dev->name, sizeof(v4l2_dev->name),
849 "%s.capture", dev_name(&fimc->pdev->dev));
851 ret = v4l2_device_register(NULL, v4l2_dev);
855 vfd = video_device_alloc();
857 v4l2_err(v4l2_dev, "Failed to allocate video device\n");
861 snprintf(vfd->name, sizeof(vfd->name), "%s:cap",
862 dev_name(&fimc->pdev->dev));
864 vfd->fops = &fimc_capture_fops;
865 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
867 vfd->release = video_device_release;
868 vfd->lock = &fimc->lock;
869 video_set_drvdata(vfd, fimc);
871 vid_cap = &fimc->vid_cap;
873 vid_cap->active_buf_cnt = 0;
874 vid_cap->reqbufs_count = 0;
876 /* Default color format for image sensor */
877 vid_cap->fmt.code = V4L2_MBUS_FMT_YUYV8_2X8;
879 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
880 INIT_LIST_HEAD(&vid_cap->active_buf_q);
881 spin_lock_init(&ctx->slock);
884 q = &fimc->vid_cap.vbq;
885 memset(q, 0, sizeof(*q));
886 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
887 q->io_modes = VB2_MMAP | VB2_USERPTR;
888 q->drv_priv = fimc->vid_cap.ctx;
889 q->ops = &fimc_capture_qops;
890 q->mem_ops = &vb2_dma_contig_memops;
891 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
895 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
897 v4l2_err(v4l2_dev, "Failed to register video device\n");
902 "FIMC capture driver registered as /dev/video%d\n",
908 video_device_release(vfd);
910 v4l2_device_unregister(v4l2_dev);
912 dev_err(&fimc->pdev->dev, "failed to install\n");
916 void fimc_unregister_capture_device(struct fimc_dev *fimc)
918 struct fimc_vid_cap *capture = &fimc->vid_cap;
921 video_unregister_device(capture->vfd);