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/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 < 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 int fimc_stop_capture(struct fimc_dev *fimc)
158 struct fimc_vid_cap *cap;
159 struct fimc_vid_buffer *buf;
161 cap = &fimc->vid_cap;
163 if (!fimc_capture_active(fimc))
166 spin_lock_irqsave(&fimc->slock, flags);
167 set_bit(ST_CAPT_SHUT, &fimc->state);
168 fimc_deactivate_capture(fimc);
169 spin_unlock_irqrestore(&fimc->slock, flags);
171 wait_event_timeout(fimc->irq_queue,
172 !test_bit(ST_CAPT_SHUT, &fimc->state),
173 FIMC_SHUTDOWN_TIMEOUT);
175 v4l2_subdev_call(cap->sd, video, s_stream, 0);
177 spin_lock_irqsave(&fimc->slock, flags);
178 fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_PEND |
179 1 << ST_CAPT_SHUT | 1 << ST_CAPT_STREAM);
181 fimc->vid_cap.active_buf_cnt = 0;
183 /* Release buffers that were enqueued in the driver by videobuf2. */
184 while (!list_empty(&cap->pending_buf_q)) {
185 buf = pending_queue_pop(cap);
186 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
189 while (!list_empty(&cap->active_buf_q)) {
190 buf = active_queue_pop(cap);
191 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
194 spin_unlock_irqrestore(&fimc->slock, flags);
196 dbg("state: 0x%lx", fimc->state);
200 static int start_streaming(struct vb2_queue *q)
202 struct fimc_ctx *ctx = q->drv_priv;
203 struct fimc_dev *fimc = ctx->fimc_dev;
204 struct s5p_fimc_isp_info *isp_info;
209 ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_stream, 1);
210 if (ret && ret != -ENOIOCTLCMD)
213 ret = fimc_prepare_config(ctx, ctx->state);
217 isp_info = &fimc->pdata->isp_info[fimc->vid_cap.input_index];
218 fimc_hw_set_camera_type(fimc, isp_info);
219 fimc_hw_set_camera_source(fimc, isp_info);
220 fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
222 if (ctx->state & FIMC_PARAMS) {
223 ret = fimc_set_scaler_info(ctx);
225 err("Scaler setup error");
228 fimc_hw_set_input_path(ctx);
229 fimc_hw_set_prescaler(ctx);
230 fimc_hw_set_mainscaler(ctx);
231 fimc_hw_set_target_format(ctx);
232 fimc_hw_set_rotation(ctx);
233 fimc_hw_set_effect(ctx);
236 fimc_hw_set_output_path(ctx);
237 fimc_hw_set_out_dma(ctx);
239 INIT_LIST_HEAD(&fimc->vid_cap.pending_buf_q);
240 INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
241 fimc->vid_cap.active_buf_cnt = 0;
242 fimc->vid_cap.frame_count = 0;
243 fimc->vid_cap.buf_index = 0;
245 set_bit(ST_CAPT_PEND, &fimc->state);
250 static int stop_streaming(struct vb2_queue *q)
252 struct fimc_ctx *ctx = q->drv_priv;
253 struct fimc_dev *fimc = ctx->fimc_dev;
255 if (!fimc_capture_active(fimc))
258 return fimc_stop_capture(fimc);
261 static unsigned int get_plane_size(struct fimc_frame *fr, unsigned int plane)
263 if (!fr || plane >= fr->fmt->memplanes)
265 return fr->f_width * fr->f_height * fr->fmt->depth[plane] / 8;
268 static int queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
269 unsigned int *num_planes, unsigned long sizes[],
272 struct fimc_ctx *ctx = vq->drv_priv;
273 struct fimc_fmt *fmt = ctx->d_frame.fmt;
279 *num_planes = fmt->memplanes;
281 for (i = 0; i < fmt->memplanes; i++) {
282 sizes[i] = get_plane_size(&ctx->d_frame, i);
283 allocators[i] = ctx->fimc_dev->alloc_ctx;
289 static int buffer_prepare(struct vb2_buffer *vb)
291 struct vb2_queue *vq = vb->vb2_queue;
292 struct fimc_ctx *ctx = vq->drv_priv;
293 struct v4l2_device *v4l2_dev = &ctx->fimc_dev->m2m.v4l2_dev;
296 if (!ctx->d_frame.fmt || vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
299 for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
300 unsigned long size = get_plane_size(&ctx->d_frame, i);
302 if (vb2_plane_size(vb, i) < size) {
303 v4l2_err(v4l2_dev, "User buffer too small (%ld < %ld)\n",
304 vb2_plane_size(vb, i), size);
308 vb2_set_plane_payload(vb, i, size);
314 static void buffer_queue(struct vb2_buffer *vb)
316 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
317 struct fimc_dev *fimc = ctx->fimc_dev;
318 struct fimc_vid_buffer *buf
319 = container_of(vb, struct fimc_vid_buffer, vb);
320 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
324 spin_lock_irqsave(&fimc->slock, flags);
325 fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
327 if (!test_bit(ST_CAPT_STREAM, &fimc->state)
328 && vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
329 /* Setup the buffer directly for processing. */
330 int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
333 fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
334 buf->index = vid_cap->buf_index;
335 active_queue_add(vid_cap, buf);
337 if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
338 vid_cap->buf_index = 0;
340 fimc_pending_queue_add(vid_cap, buf);
343 min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
345 if (vid_cap->active_buf_cnt >= min_bufs &&
346 !test_and_set_bit(ST_CAPT_STREAM, &fimc->state))
347 fimc_activate_capture(ctx);
349 spin_unlock_irqrestore(&fimc->slock, flags);
352 static void fimc_lock(struct vb2_queue *vq)
354 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
355 mutex_lock(&ctx->fimc_dev->lock);
358 static void fimc_unlock(struct vb2_queue *vq)
360 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
361 mutex_unlock(&ctx->fimc_dev->lock);
364 static struct vb2_ops fimc_capture_qops = {
365 .queue_setup = queue_setup,
366 .buf_prepare = buffer_prepare,
367 .buf_queue = buffer_queue,
368 .wait_prepare = fimc_unlock,
369 .wait_finish = fimc_lock,
370 .start_streaming = start_streaming,
371 .stop_streaming = stop_streaming,
374 static int fimc_capture_open(struct file *file)
376 struct fimc_dev *fimc = video_drvdata(file);
379 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
381 /* Return if the corresponding video mem2mem node is already opened. */
382 if (fimc_m2m_active(fimc))
385 if (++fimc->vid_cap.refcnt == 1) {
386 ret = fimc_isp_subdev_init(fimc, 0);
388 fimc->vid_cap.refcnt--;
393 file->private_data = fimc->vid_cap.ctx;
398 static int fimc_capture_close(struct file *file)
400 struct fimc_dev *fimc = video_drvdata(file);
402 dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
404 if (--fimc->vid_cap.refcnt == 0) {
405 fimc_stop_capture(fimc);
406 vb2_queue_release(&fimc->vid_cap.vbq);
408 v4l2_err(&fimc->vid_cap.v4l2_dev, "releasing ISP\n");
410 v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
411 clk_disable(fimc->clock[CLK_CAM]);
412 fimc_subdev_unregister(fimc);
418 static unsigned int fimc_capture_poll(struct file *file,
419 struct poll_table_struct *wait)
421 struct fimc_ctx *ctx = file->private_data;
422 struct fimc_dev *fimc = ctx->fimc_dev;
424 return vb2_poll(&fimc->vid_cap.vbq, file, wait);
427 static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
429 struct fimc_ctx *ctx = file->private_data;
430 struct fimc_dev *fimc = ctx->fimc_dev;
432 return vb2_mmap(&fimc->vid_cap.vbq, vma);
435 /* video device file operations */
436 static const struct v4l2_file_operations fimc_capture_fops = {
437 .owner = THIS_MODULE,
438 .open = fimc_capture_open,
439 .release = fimc_capture_close,
440 .poll = fimc_capture_poll,
441 .unlocked_ioctl = video_ioctl2,
442 .mmap = fimc_capture_mmap,
445 static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
446 struct v4l2_capability *cap)
448 struct fimc_ctx *ctx = file->private_data;
449 struct fimc_dev *fimc = ctx->fimc_dev;
451 strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
452 strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
453 cap->bus_info[0] = 0;
454 cap->version = KERNEL_VERSION(1, 0, 0);
455 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE |
456 V4L2_CAP_VIDEO_CAPTURE_MPLANE;
461 /* Synchronize formats of the camera interface input and attached sensor. */
462 static int sync_capture_fmt(struct fimc_ctx *ctx)
464 struct fimc_frame *frame = &ctx->s_frame;
465 struct fimc_dev *fimc = ctx->fimc_dev;
466 struct v4l2_mbus_framefmt *fmt = &fimc->vid_cap.fmt;
469 fmt->width = ctx->d_frame.o_width;
470 fmt->height = ctx->d_frame.o_height;
472 ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_mbus_fmt, fmt);
473 if (ret == -ENOIOCTLCMD) {
474 err("s_mbus_fmt failed");
477 dbg("w: %d, h: %d, code= %d", fmt->width, fmt->height, fmt->code);
479 frame->fmt = find_mbus_format(fmt, FMT_FLAGS_CAM);
481 err("fimc source format not found\n");
485 frame->f_width = fmt->width;
486 frame->f_height = fmt->height;
487 frame->width = fmt->width;
488 frame->height = fmt->height;
489 frame->o_width = fmt->width;
490 frame->o_height = fmt->height;
497 static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
498 struct v4l2_format *f)
500 struct fimc_ctx *ctx = priv;
501 struct fimc_dev *fimc = ctx->fimc_dev;
502 struct fimc_frame *frame;
503 struct v4l2_pix_format_mplane *pix;
507 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
510 ret = fimc_vidioc_try_fmt_mplane(file, priv, f);
514 if (vb2_is_busy(&fimc->vid_cap.vbq) || fimc_capture_active(fimc))
517 frame = &ctx->d_frame;
519 pix = &f->fmt.pix_mp;
520 frame->fmt = find_format(f, FMT_FLAGS_M2M | FMT_FLAGS_CAM);
522 err("fimc target format not found\n");
526 for (i = 0; i < frame->fmt->colplanes; i++) {
528 (pix->width * pix->height * frame->fmt->depth[i]) >> 3;
531 /* Output DMA frame pixel size and offsets. */
532 frame->f_width = pix->plane_fmt[0].bytesperline * 8
533 / frame->fmt->depth[0];
534 frame->f_height = pix->height;
535 frame->width = pix->width;
536 frame->height = pix->height;
537 frame->o_width = pix->width;
538 frame->o_height = pix->height;
542 ctx->state |= (FIMC_PARAMS | FIMC_DST_FMT);
544 ret = sync_capture_fmt(ctx);
548 static int fimc_cap_enum_input(struct file *file, void *priv,
549 struct v4l2_input *i)
551 struct fimc_ctx *ctx = priv;
552 struct s5p_platform_fimc *pldata = ctx->fimc_dev->pdata;
553 struct s5p_fimc_isp_info *isp_info;
555 if (i->index >= pldata->num_clients)
558 isp_info = &pldata->isp_info[i->index];
560 i->type = V4L2_INPUT_TYPE_CAMERA;
561 strncpy(i->name, isp_info->board_info->type, 32);
565 static int fimc_cap_s_input(struct file *file, void *priv,
568 struct fimc_ctx *ctx = priv;
569 struct fimc_dev *fimc = ctx->fimc_dev;
570 struct s5p_platform_fimc *pdata = fimc->pdata;
572 if (fimc_capture_active(ctx->fimc_dev))
575 if (i >= pdata->num_clients)
579 if (fimc->vid_cap.sd) {
580 int ret = v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
582 err("s_power failed: %d", ret);
584 clk_disable(fimc->clock[CLK_CAM]);
587 /* Release the attached sensor subdevice. */
588 fimc_subdev_unregister(fimc);
590 return fimc_isp_subdev_init(fimc, i);
593 static int fimc_cap_g_input(struct file *file, void *priv,
596 struct fimc_ctx *ctx = priv;
597 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
599 *i = cap->input_index;
603 static int fimc_cap_streamon(struct file *file, void *priv,
604 enum v4l2_buf_type type)
606 struct fimc_ctx *ctx = priv;
607 struct fimc_dev *fimc = ctx->fimc_dev;
609 if (fimc_capture_active(fimc) || !fimc->vid_cap.sd)
612 if (!(ctx->state & FIMC_DST_FMT)) {
613 v4l2_err(&fimc->vid_cap.v4l2_dev, "Format is not set\n");
617 return vb2_streamon(&fimc->vid_cap.vbq, type);
620 static int fimc_cap_streamoff(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 return vb2_streamoff(&fimc->vid_cap.vbq, type);
629 static int fimc_cap_reqbufs(struct file *file, void *priv,
630 struct v4l2_requestbuffers *reqbufs)
632 struct fimc_ctx *ctx = priv;
633 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
637 ret = vb2_reqbufs(&cap->vbq, reqbufs);
639 cap->reqbufs_count = reqbufs->count;
644 static int fimc_cap_querybuf(struct file *file, void *priv,
645 struct v4l2_buffer *buf)
647 struct fimc_ctx *ctx = priv;
648 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
650 return vb2_querybuf(&cap->vbq, buf);
653 static int fimc_cap_qbuf(struct file *file, void *priv,
654 struct v4l2_buffer *buf)
656 struct fimc_ctx *ctx = priv;
657 struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
658 return vb2_qbuf(&cap->vbq, buf);
661 static int fimc_cap_dqbuf(struct file *file, void *priv,
662 struct v4l2_buffer *buf)
664 struct fimc_ctx *ctx = priv;
665 return vb2_dqbuf(&ctx->fimc_dev->vid_cap.vbq, buf,
666 file->f_flags & O_NONBLOCK);
669 static int fimc_cap_s_ctrl(struct file *file, void *priv,
670 struct v4l2_control *ctrl)
672 struct fimc_ctx *ctx = priv;
675 /* Allow any controls but 90/270 rotation while streaming */
676 if (!fimc_capture_active(ctx->fimc_dev) ||
677 ctrl->id != V4L2_CID_ROTATE ||
678 (ctrl->value != 90 && ctrl->value != 270)) {
679 ret = check_ctrl_val(ctx, ctrl);
681 ret = fimc_s_ctrl(ctx, ctrl);
683 ctx->state |= FIMC_PARAMS;
687 ret = v4l2_subdev_call(ctx->fimc_dev->vid_cap.sd,
692 static int fimc_cap_cropcap(struct file *file, void *fh,
693 struct v4l2_cropcap *cr)
695 struct fimc_frame *f;
696 struct fimc_ctx *ctx = fh;
698 if (cr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
705 cr->bounds.width = f->o_width;
706 cr->bounds.height = f->o_height;
707 cr->defrect = cr->bounds;
712 static int fimc_cap_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
714 struct fimc_frame *f;
715 struct fimc_ctx *ctx = file->private_data;
719 cr->c.left = f->offs_h;
720 cr->c.top = f->offs_v;
721 cr->c.width = f->width;
722 cr->c.height = f->height;
727 static int fimc_cap_s_crop(struct file *file, void *fh,
728 struct v4l2_crop *cr)
730 struct fimc_frame *f;
731 struct fimc_ctx *ctx = file->private_data;
732 struct fimc_dev *fimc = ctx->fimc_dev;
735 if (fimc_capture_active(fimc))
738 ret = fimc_try_crop(ctx, cr);
742 if (!(ctx->state & FIMC_DST_FMT)) {
743 v4l2_err(&fimc->vid_cap.v4l2_dev,
744 "Capture color format not set\n");
745 return -EINVAL; /* TODO: make sure this is the right value */
749 /* Check for the pixel scaling ratio when cropping input image. */
750 ret = fimc_check_scaler_ratio(cr->c.width, cr->c.height,
751 ctx->d_frame.width, ctx->d_frame.height,
754 v4l2_err(&fimc->vid_cap.v4l2_dev, "Out of the scaler range\n");
758 f->offs_h = cr->c.left;
759 f->offs_v = cr->c.top;
760 f->width = cr->c.width;
761 f->height = cr->c.height;
767 static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
768 .vidioc_querycap = fimc_vidioc_querycap_capture,
770 .vidioc_enum_fmt_vid_cap_mplane = fimc_vidioc_enum_fmt_mplane,
771 .vidioc_try_fmt_vid_cap_mplane = fimc_vidioc_try_fmt_mplane,
772 .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
773 .vidioc_g_fmt_vid_cap_mplane = fimc_vidioc_g_fmt_mplane,
775 .vidioc_reqbufs = fimc_cap_reqbufs,
776 .vidioc_querybuf = fimc_cap_querybuf,
778 .vidioc_qbuf = fimc_cap_qbuf,
779 .vidioc_dqbuf = fimc_cap_dqbuf,
781 .vidioc_streamon = fimc_cap_streamon,
782 .vidioc_streamoff = fimc_cap_streamoff,
784 .vidioc_queryctrl = fimc_vidioc_queryctrl,
785 .vidioc_g_ctrl = fimc_vidioc_g_ctrl,
786 .vidioc_s_ctrl = fimc_cap_s_ctrl,
788 .vidioc_g_crop = fimc_cap_g_crop,
789 .vidioc_s_crop = fimc_cap_s_crop,
790 .vidioc_cropcap = fimc_cap_cropcap,
792 .vidioc_enum_input = fimc_cap_enum_input,
793 .vidioc_s_input = fimc_cap_s_input,
794 .vidioc_g_input = fimc_cap_g_input,
797 /* fimc->lock must be already initialized */
798 int fimc_register_capture_device(struct fimc_dev *fimc)
800 struct v4l2_device *v4l2_dev = &fimc->vid_cap.v4l2_dev;
801 struct video_device *vfd;
802 struct fimc_vid_cap *vid_cap;
803 struct fimc_ctx *ctx;
804 struct v4l2_format f;
805 struct fimc_frame *fr;
809 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
813 ctx->fimc_dev = fimc;
814 ctx->in_path = FIMC_CAMERA;
815 ctx->out_path = FIMC_DMA;
816 ctx->state = FIMC_CTX_CAP;
818 /* Default format of the output frames */
819 f.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB32;
821 fr->fmt = find_format(&f, FMT_FLAGS_M2M);
822 fr->width = fr->f_width = fr->o_width = 640;
823 fr->height = fr->f_height = fr->o_height = 480;
825 if (!v4l2_dev->name[0])
826 snprintf(v4l2_dev->name, sizeof(v4l2_dev->name),
827 "%s.capture", dev_name(&fimc->pdev->dev));
829 ret = v4l2_device_register(NULL, v4l2_dev);
833 vfd = video_device_alloc();
835 v4l2_err(v4l2_dev, "Failed to allocate video device\n");
839 snprintf(vfd->name, sizeof(vfd->name), "%s:cap",
840 dev_name(&fimc->pdev->dev));
842 vfd->fops = &fimc_capture_fops;
843 vfd->ioctl_ops = &fimc_capture_ioctl_ops;
845 vfd->release = video_device_release;
846 vfd->lock = &fimc->lock;
847 video_set_drvdata(vfd, fimc);
849 vid_cap = &fimc->vid_cap;
851 vid_cap->active_buf_cnt = 0;
852 vid_cap->reqbufs_count = 0;
854 /* Default color format for image sensor */
855 vid_cap->fmt.code = V4L2_MBUS_FMT_YUYV8_2X8;
857 INIT_LIST_HEAD(&vid_cap->pending_buf_q);
858 INIT_LIST_HEAD(&vid_cap->active_buf_q);
859 spin_lock_init(&ctx->slock);
862 q = &fimc->vid_cap.vbq;
863 memset(q, 0, sizeof(*q));
864 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
865 q->io_modes = VB2_MMAP | VB2_USERPTR;
866 q->drv_priv = fimc->vid_cap.ctx;
867 q->ops = &fimc_capture_qops;
868 q->mem_ops = &vb2_dma_contig_memops;
869 q->buf_struct_size = sizeof(struct fimc_vid_buffer);
873 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
875 v4l2_err(v4l2_dev, "Failed to register video device\n");
880 "FIMC capture driver registered as /dev/video%d\n",
886 video_device_release(vfd);
888 v4l2_device_unregister(v4l2_dev);
891 dev_err(&fimc->pdev->dev, "failed to install\n");
895 void fimc_unregister_capture_device(struct fimc_dev *fimc)
897 struct fimc_vid_cap *capture = &fimc->vid_cap;
900 video_unregister_device(capture->vfd);