2 * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver
4 * Copyright (C) 2010 - 2011 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/types.h>
15 #include <linux/errno.h>
16 #include <linux/bug.h>
17 #include <linux/interrupt.h>
18 #include <linux/device.h>
19 #include <linux/platform_device.h>
20 #include <linux/pm_runtime.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 < pdata->num_clients; ++i) {
95 isp_info = &pdata->isp_info[i];
97 if (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;
119 struct s5p_platform_fimc *pdata = fimc->pdata;
122 if (index >= pdata->num_clients)
125 isp_info = &pdata->isp_info[index];
127 if (isp_info->clk_frequency)
128 clk_set_rate(fimc->clock[CLK_CAM], isp_info->clk_frequency);
130 ret = clk_enable(fimc->clock[CLK_CAM]);
134 ret = fimc_subdev_attach(fimc, index);
138 ret = fimc_hw_set_camera_polarity(fimc, isp_info);
142 ret = v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 1);
146 /* enabling power failed so unregister subdev */
147 fimc_subdev_unregister(fimc);
149 v4l2_err(&fimc->vid_cap.v4l2_dev, "ISP initialization failed: %d\n",
155 static void fimc_capture_state_cleanup(struct fimc_dev *fimc)
157 struct fimc_vid_cap *cap = &fimc->vid_cap;
158 struct fimc_vid_buffer *buf;
161 spin_lock_irqsave(&fimc->slock, flags);
162 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_PEND |
163 1 << ST_CAPT_SHUT | 1 << ST_CAPT_STREAM);
165 fimc->vid_cap.active_buf_cnt = 0;
167 /* Release buffers that were enqueued in the driver by videobuf2. */
168 while (!list_empty(&cap->pending_buf_q)) {
169 buf = pending_queue_pop(cap);
170 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
173 while (!list_empty(&cap->active_buf_q)) {
174 buf = active_queue_pop(cap);
175 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
178 spin_unlock_irqrestore(&fimc->slock, flags);
181 static int fimc_stop_capture(struct fimc_dev *fimc)
183 struct fimc_vid_cap *cap = &fimc->vid_cap;
186 if (!fimc_capture_active(fimc))
189 spin_lock_irqsave(&fimc->slock, flags);
190 set_bit(ST_CAPT_SHUT, &fimc->state);
191 fimc_deactivate_capture(fimc);
192 spin_unlock_irqrestore(&fimc->slock, flags);
194 wait_event_timeout(fimc->irq_queue,
195 !test_bit(ST_CAPT_SHUT, &fimc->state),
196 FIMC_SHUTDOWN_TIMEOUT);
198 v4l2_subdev_call(cap->sd, video, s_stream, 0);
200 fimc_capture_state_cleanup(fimc);
201 dbg("state: 0x%lx", fimc->state);
206 static int start_streaming(struct vb2_queue *q, unsigned int count)
208 struct fimc_ctx *ctx = q->drv_priv;
209 struct fimc_dev *fimc = ctx->fimc_dev;
210 struct s5p_fimc_isp_info *isp_info;
216 ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_stream, 1);
217 if (ret && ret != -ENOIOCTLCMD)
220 ret = fimc_prepare_config(ctx, ctx->state);
224 isp_info = &fimc->pdata->isp_info[fimc->vid_cap.input_index];
225 fimc_hw_set_camera_type(fimc, isp_info);
226 fimc_hw_set_camera_source(fimc, isp_info);
227 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
229 if (ctx->state & FIMC_PARAMS) {
230 ret = fimc_set_scaler_info(ctx);
232 err("Scaler setup error");
235 fimc_hw_set_input_path(ctx);
236 fimc_hw_set_prescaler(ctx);
237 fimc_hw_set_mainscaler(ctx);
238 fimc_hw_set_target_format(ctx);
239 fimc_hw_set_rotation(ctx);
240 fimc_hw_set_effect(ctx);
243 fimc_hw_set_output_path(ctx);
244 fimc_hw_set_out_dma(ctx);
246 INIT_LIST_HEAD(&fimc->vid_cap.pending_buf_q);
247 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
248 fimc->vid_cap.frame_count = 0;
249 fimc->vid_cap.buf_index = 0;
251 set_bit(ST_CAPT_PEND, &fimc->state);
253 min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1;
255 if (fimc->vid_cap.active_buf_cnt >= min_bufs)
256 fimc_activate_capture(ctx);
260 fimc_capture_state_cleanup(fimc);
264 static int stop_streaming(struct vb2_queue *q)
266 struct fimc_ctx *ctx = q->drv_priv;
267 struct fimc_dev *fimc = ctx->fimc_dev;
269 if (!fimc_capture_active(fimc))
272 return fimc_stop_capture(fimc);
275 int fimc_capture_suspend(struct fimc_dev *fimc)
280 int fimc_capture_resume(struct fimc_dev *fimc)
285 static unsigned int get_plane_size(struct fimc_frame *fr, unsigned int plane)
287 if (!fr || plane >= fr->fmt->memplanes)
289 return fr->f_width * fr->f_height * fr->fmt->depth[plane] / 8;
292 static int queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
293 unsigned int *num_planes, unsigned int sizes[],
296 struct fimc_ctx *ctx = vq->drv_priv;
297 struct fimc_fmt *fmt = ctx->d_frame.fmt;
303 *num_planes = fmt->memplanes;
305 for (i = 0; i < fmt->memplanes; i++) {
306 sizes[i] = get_plane_size(&ctx->d_frame, i);
307 allocators[i] = ctx->fimc_dev->alloc_ctx;
313 static int buffer_prepare(struct vb2_buffer *vb)
315 struct vb2_queue *vq = vb->vb2_queue;
316 struct fimc_ctx *ctx = vq->drv_priv;
317 struct v4l2_device *v4l2_dev = &ctx->fimc_dev->m2m.v4l2_dev;
320 if (!ctx->d_frame.fmt || vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
323 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
324 unsigned long size = get_plane_size(&ctx->d_frame, i);
326 if (vb2_plane_size(vb, i) < size) {
327 v4l2_err(v4l2_dev, "User buffer too small (%ld < %ld)\n",
328 vb2_plane_size(vb, i), size);
332 vb2_set_plane_payload(vb, i, size);
338 static void buffer_queue(struct vb2_buffer *vb)
340 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
341 struct fimc_dev *fimc = ctx->fimc_dev;
342 struct fimc_vid_buffer *buf
343 = container_of(vb, struct fimc_vid_buffer, vb);
344 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
348 spin_lock_irqsave(&fimc->slock, flags);
349 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
351 if (!test_bit(ST_CAPT_STREAM, &fimc->state)
352 && vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
353 /* Setup the buffer directly for processing. */
354 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
357 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
358 buf->index = vid_cap->buf_index;
359 active_queue_add(vid_cap, buf);
361 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
362 vid_cap->buf_index = 0;
364 fimc_pending_queue_add(vid_cap, buf);
367 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
369 if (vb2_is_streaming(&vid_cap->vbq) &&
370 vid_cap->active_buf_cnt >= min_bufs &&
371 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state))
372 fimc_activate_capture(ctx);
374 spin_unlock_irqrestore(&fimc->slock, flags);
377 static void fimc_lock(struct vb2_queue *vq)
379 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
380 mutex_lock(&ctx->fimc_dev->lock);
383 static void fimc_unlock(struct vb2_queue *vq)
385 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
386 mutex_unlock(&ctx->fimc_dev->lock);
389 static struct vb2_ops fimc_capture_qops = {
390 .queue_setup = queue_setup,
391 .buf_prepare = buffer_prepare,
392 .buf_queue = buffer_queue,
393 .wait_prepare = fimc_unlock,
394 .wait_finish = fimc_lock,
395 .start_streaming = start_streaming,
396 .stop_streaming = stop_streaming,
399 static int fimc_capture_open(struct file *file)
401 struct fimc_dev *fimc = video_drvdata(file);
404 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
406 /* Return if the corresponding video mem2mem node is already opened. */
407 if (fimc_m2m_active(fimc))
410 ret = pm_runtime_get_sync(&fimc->pdev->dev);
414 if (++fimc->vid_cap.refcnt == 1) {
415 ret = fimc_isp_subdev_init(fimc, 0);
417 pm_runtime_put_sync(&fimc->pdev->dev);
418 fimc->vid_cap.refcnt--;
423 file->private_data = fimc->vid_cap.ctx;
428 static int fimc_capture_close(struct file *file)
430 struct fimc_dev *fimc = video_drvdata(file);
432 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
434 if (--fimc->vid_cap.refcnt == 0) {
435 fimc_stop_capture(fimc);
436 vb2_queue_release(&fimc->vid_cap.vbq);
438 v4l2_err(&fimc->vid_cap.v4l2_dev, "releasing ISP\n");
440 v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
441 clk_disable(fimc->clock[CLK_CAM]);
442 fimc_subdev_unregister(fimc);
445 pm_runtime_put(&fimc->pdev->dev);
450 static unsigned int fimc_capture_poll(struct file *file,
451 struct poll_table_struct *wait)
453 struct fimc_ctx *ctx = file->private_data;
454 struct fimc_dev *fimc = ctx->fimc_dev;
456 return vb2_poll(&fimc->vid_cap.vbq, file, wait);
459 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
461 struct fimc_ctx *ctx = file->private_data;
462 struct fimc_dev *fimc = ctx->fimc_dev;
464 return vb2_mmap(&fimc->vid_cap.vbq, vma);
467 /* video device file operations */
468 static const struct v4l2_file_operations fimc_capture_fops = {
469 .owner = THIS_MODULE,
470 .open = fimc_capture_open,
471 .release = fimc_capture_close,
472 .poll = fimc_capture_poll,
473 .unlocked_ioctl = video_ioctl2,
474 .mmap = fimc_capture_mmap,
477 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
478 struct v4l2_capability *cap)
480 struct fimc_ctx *ctx = file->private_data;
481 struct fimc_dev *fimc = ctx->fimc_dev;
483 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
484 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
485 cap->bus_info[0] = 0;
486 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE |
487 V4L2_CAP_VIDEO_CAPTURE_MPLANE;
492 /* Synchronize formats of the camera interface input and attached sensor. */
493 static int sync_capture_fmt(struct fimc_ctx *ctx)
495 struct fimc_frame *frame = &ctx->s_frame;
496 struct fimc_dev *fimc = ctx->fimc_dev;
497 struct v4l2_mbus_framefmt *fmt = &fimc->vid_cap.fmt;
500 fmt->width = ctx->d_frame.o_width;
501 fmt->height = ctx->d_frame.o_height;
503 ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_mbus_fmt, fmt);
504 if (ret == -ENOIOCTLCMD) {
505 err("s_mbus_fmt failed");
508 dbg("w: %d, h: %d, code= %d", fmt->width, fmt->height, fmt->code);
510 frame->fmt = find_mbus_format(fmt, FMT_FLAGS_CAM);
512 err("fimc source format not found\n");
516 frame->f_width = fmt->width;
517 frame->f_height = fmt->height;
518 frame->width = fmt->width;
519 frame->height = fmt->height;
520 frame->o_width = fmt->width;
521 frame->o_height = fmt->height;
528 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
529 struct v4l2_format *f)
531 struct fimc_ctx *ctx = priv;
532 struct fimc_dev *fimc = ctx->fimc_dev;
533 struct fimc_frame *frame;
534 struct v4l2_pix_format_mplane *pix;
538 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
541 ret = fimc_vidioc_try_fmt_mplane(file, priv, f);
545 if (vb2_is_busy(&fimc->vid_cap.vbq) || fimc_capture_active(fimc))
548 frame = &ctx->d_frame;
550 pix = &f->fmt.pix_mp;
551 frame->fmt = find_format(f, FMT_FLAGS_M2M | FMT_FLAGS_CAM);
553 err("fimc target format not found\n");
557 for (i = 0; i < frame->fmt->colplanes; i++) {
559 (pix->width * pix->height * frame->fmt->depth[i]) >> 3;
562 /* Output DMA frame pixel size and offsets. */
563 frame->f_width = pix->plane_fmt[0].bytesperline * 8
564 / frame->fmt->depth[0];
565 frame->f_height = pix->height;
566 frame->width = pix->width;
567 frame->height = pix->height;
568 frame->o_width = pix->width;
569 frame->o_height = pix->height;
573 ctx->state |= (FIMC_PARAMS | FIMC_DST_FMT);
575 ret = sync_capture_fmt(ctx);
579 static int fimc_cap_enum_input(struct file *file, void *priv,
580 struct v4l2_input *i)
582 struct fimc_ctx *ctx = priv;
583 struct s5p_platform_fimc *pldata = ctx->fimc_dev->pdata;
584 struct s5p_fimc_isp_info *isp_info;
586 if (i->index >= pldata->num_clients)
589 isp_info = &pldata->isp_info[i->index];
591 i->type = V4L2_INPUT_TYPE_CAMERA;
592 strncpy(i->name, isp_info->board_info->type, 32);
596 static int fimc_cap_s_input(struct file *file, void *priv,
599 struct fimc_ctx *ctx = priv;
600 struct fimc_dev *fimc = ctx->fimc_dev;
601 struct s5p_platform_fimc *pdata = fimc->pdata;
603 if (fimc_capture_active(ctx->fimc_dev))
606 if (i >= pdata->num_clients)
610 if (fimc->vid_cap.sd) {
611 int ret = v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
613 err("s_power failed: %d", ret);
615 clk_disable(fimc->clock[CLK_CAM]);
618 /* Release the attached sensor subdevice. */
619 fimc_subdev_unregister(fimc);
621 return fimc_isp_subdev_init(fimc, i);
624 static int fimc_cap_g_input(struct file *file, void *priv,
627 struct fimc_ctx *ctx = priv;
628 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
630 *i = cap->input_index;
634 static int fimc_cap_streamon(struct file *file, void *priv,
635 enum v4l2_buf_type type)
637 struct fimc_ctx *ctx = priv;
638 struct fimc_dev *fimc = ctx->fimc_dev;
640 if (fimc_capture_active(fimc) || !fimc->vid_cap.sd)
643 if (!(ctx->state & FIMC_DST_FMT)) {
644 v4l2_err(&fimc->vid_cap.v4l2_dev, "Format is not set\n");
648 return vb2_streamon(&fimc->vid_cap.vbq, type);
651 static int fimc_cap_streamoff(struct file *file, void *priv,
652 enum v4l2_buf_type type)
654 struct fimc_ctx *ctx = priv;
655 struct fimc_dev *fimc = ctx->fimc_dev;
657 return vb2_streamoff(&fimc->vid_cap.vbq, type);
660 static int fimc_cap_reqbufs(struct file *file, void *priv,
661 struct v4l2_requestbuffers *reqbufs)
663 struct fimc_ctx *ctx = priv;
664 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
668 ret = vb2_reqbufs(&cap->vbq, reqbufs);
670 cap->reqbufs_count = reqbufs->count;
675 static int fimc_cap_querybuf(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;
681 return vb2_querybuf(&cap->vbq, buf);
684 static int fimc_cap_qbuf(struct file *file, void *priv,
685 struct v4l2_buffer *buf)
687 struct fimc_ctx *ctx = priv;
688 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
689 return vb2_qbuf(&cap->vbq, buf);
692 static int fimc_cap_dqbuf(struct file *file, void *priv,
693 struct v4l2_buffer *buf)
695 struct fimc_ctx *ctx = priv;
696 return vb2_dqbuf(&ctx->fimc_dev->vid_cap.vbq, buf,
697 file->f_flags & O_NONBLOCK);
700 static int fimc_cap_s_ctrl(struct file *file, void *priv,
701 struct v4l2_control *ctrl)
703 struct fimc_ctx *ctx = priv;
706 /* Allow any controls but 90/270 rotation while streaming */
707 if (!fimc_capture_active(ctx->fimc_dev) ||
708 ctrl->id != V4L2_CID_ROTATE ||
709 (ctrl->value != 90 && ctrl->value != 270)) {
710 ret = check_ctrl_val(ctx, ctrl);
712 ret = fimc_s_ctrl(ctx, ctrl);
714 ctx->state |= FIMC_PARAMS;
718 ret = v4l2_subdev_call(ctx->fimc_dev->vid_cap.sd,
723 static int fimc_cap_cropcap(struct file *file, void *fh,
724 struct v4l2_cropcap *cr)
726 struct fimc_frame *f;
727 struct fimc_ctx *ctx = fh;
729 if (cr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
736 cr->bounds.width = f->o_width;
737 cr->bounds.height = f->o_height;
738 cr->defrect = cr->bounds;
743 static int fimc_cap_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
745 struct fimc_frame *f;
746 struct fimc_ctx *ctx = file->private_data;
750 cr->c.left = f->offs_h;
751 cr->c.top = f->offs_v;
752 cr->c.width = f->width;
753 cr->c.height = f->height;
758 static int fimc_cap_s_crop(struct file *file, void *fh,
759 struct v4l2_crop *cr)
761 struct fimc_frame *f;
762 struct fimc_ctx *ctx = file->private_data;
763 struct fimc_dev *fimc = ctx->fimc_dev;
766 if (fimc_capture_active(fimc))
769 ret = fimc_try_crop(ctx, cr);
773 if (!(ctx->state & FIMC_DST_FMT)) {
774 v4l2_err(&fimc->vid_cap.v4l2_dev,
775 "Capture color format not set\n");
776 return -EINVAL; /* TODO: make sure this is the right value */
780 /* Check for the pixel scaling ratio when cropping input image. */
781 ret = fimc_check_scaler_ratio(cr->c.width, cr->c.height,
782 ctx->d_frame.width, ctx->d_frame.height,
785 v4l2_err(&fimc->vid_cap.v4l2_dev, "Out of the scaler range\n");
789 f->offs_h = cr->c.left;
790 f->offs_v = cr->c.top;
791 f->width = cr->c.width;
792 f->height = cr->c.height;
798 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
799 .vidioc_querycap = fimc_vidioc_querycap_capture,
801 .vidioc_enum_fmt_vid_cap_mplane = fimc_vidioc_enum_fmt_mplane,
802 .vidioc_try_fmt_vid_cap_mplane = fimc_vidioc_try_fmt_mplane,
803 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
804 .vidioc_g_fmt_vid_cap_mplane = fimc_vidioc_g_fmt_mplane,
806 .vidioc_reqbufs = fimc_cap_reqbufs,
807 .vidioc_querybuf = fimc_cap_querybuf,
809 .vidioc_qbuf = fimc_cap_qbuf,
810 .vidioc_dqbuf = fimc_cap_dqbuf,
812 .vidioc_streamon = fimc_cap_streamon,
813 .vidioc_streamoff = fimc_cap_streamoff,
815 .vidioc_queryctrl = fimc_vidioc_queryctrl,
816 .vidioc_g_ctrl = fimc_vidioc_g_ctrl,
817 .vidioc_s_ctrl = fimc_cap_s_ctrl,
819 .vidioc_g_crop = fimc_cap_g_crop,
820 .vidioc_s_crop = fimc_cap_s_crop,
821 .vidioc_cropcap = fimc_cap_cropcap,
823 .vidioc_enum_input = fimc_cap_enum_input,
824 .vidioc_s_input = fimc_cap_s_input,
825 .vidioc_g_input = fimc_cap_g_input,
828 /* fimc->lock must be already initialized */
829 int fimc_register_capture_device(struct fimc_dev *fimc)
831 struct v4l2_device *v4l2_dev = &fimc->vid_cap.v4l2_dev;
832 struct video_device *vfd;
833 struct fimc_vid_cap *vid_cap;
834 struct fimc_ctx *ctx;
835 struct v4l2_format f;
836 struct fimc_frame *fr;
840 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
844 ctx->fimc_dev = fimc;
845 ctx->in_path = FIMC_CAMERA;
846 ctx->out_path = FIMC_DMA;
847 ctx->state = FIMC_CTX_CAP;
849 /* Default format of the output frames */
850 f.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB32;
852 fr->fmt = find_format(&f, FMT_FLAGS_M2M);
853 fr->width = fr->f_width = fr->o_width = 640;
854 fr->height = fr->f_height = fr->o_height = 480;
856 if (!v4l2_dev->name[0])
857 snprintf(v4l2_dev->name, sizeof(v4l2_dev->name),
858 "%s.capture", dev_name(&fimc->pdev->dev));
860 ret = v4l2_device_register(NULL, v4l2_dev);
864 vfd = video_device_alloc();
866 v4l2_err(v4l2_dev, "Failed to allocate video device\n");
870 snprintf(vfd->name, sizeof(vfd->name), "%s:cap",
871 dev_name(&fimc->pdev->dev));
873 vfd->fops = &fimc_capture_fops;
874 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
876 vfd->release = video_device_release;
877 vfd->lock = &fimc->lock;
878 video_set_drvdata(vfd, fimc);
880 vid_cap = &fimc->vid_cap;
882 vid_cap->active_buf_cnt = 0;
883 vid_cap->reqbufs_count = 0;
885 /* Default color format for image sensor */
886 vid_cap->fmt.code = V4L2_MBUS_FMT_YUYV8_2X8;
888 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
889 INIT_LIST_HEAD(&vid_cap->active_buf_q);
890 spin_lock_init(&ctx->slock);
893 q = &fimc->vid_cap.vbq;
894 memset(q, 0, sizeof(*q));
895 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
896 q->io_modes = VB2_MMAP | VB2_USERPTR;
897 q->drv_priv = fimc->vid_cap.ctx;
898 q->ops = &fimc_capture_qops;
899 q->mem_ops = &vb2_dma_contig_memops;
900 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
904 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
906 v4l2_err(v4l2_dev, "Failed to register video device\n");
911 "FIMC capture driver registered as /dev/video%d\n",
917 video_device_release(vfd);
919 v4l2_device_unregister(v4l2_dev);
922 dev_err(&fimc->pdev->dev, "failed to install\n");
926 void fimc_unregister_capture_device(struct fimc_dev *fimc)
928 struct fimc_vid_cap *capture = &fimc->vid_cap;
931 video_unregister_device(capture->vfd);