diff options
| -rw-r--r-- | drivers/media/platform/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/media/platform/via-camera.c | 492 |
2 files changed, 159 insertions, 335 deletions
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 8a19654b393a..89555f9a813f 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -16,7 +16,7 @@ source "drivers/media/platform/marvell-ccic/Kconfig" config VIDEO_VIA_CAMERA tristate "VIAFB camera controller support" depends on FB_VIA - select VIDEOBUF_DMA_SG + select VIDEOBUF2_DMA_SG select VIDEO_OV7670 help Driver support for the integrated camera controller in VIA diff --git a/drivers/media/platform/via-camera.c b/drivers/media/platform/via-camera.c index 24c5d2a7b91f..78841b9015ce 100644 --- a/drivers/media/platform/via-camera.c +++ b/drivers/media/platform/via-camera.c @@ -21,7 +21,7 @@ #include <media/v4l2-event.h> #include <media/v4l2-image-sizes.h> #include <media/i2c/ov7670.h> -#include <media/videobuf-dma-sg.h> +#include <media/videobuf2-dma-sg.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/pm_qos.h> @@ -85,16 +85,11 @@ struct via_camera { * live in frame buffer memory, so we don't call them "DMA". */ unsigned int cb_offsets[3]; /* offsets into fb mem */ - u8 __iomem *cb_addrs[3]; /* Kernel-space addresses */ + u8 __iomem *cb_addrs[3]; /* Kernel-space addresses */ int n_cap_bufs; /* How many are we using? */ - int next_buf; - struct videobuf_queue vb_queue; - struct list_head buffer_queue; /* prot. by reg_lock */ - /* - * User tracking. - */ - int users; - struct file *owner; + struct vb2_queue vq; + struct list_head buffer_queue; + u32 sequence; /* * Video format information. sensor_format is kept in a form * that we can use to pass to the sensor. We always run the @@ -107,6 +102,13 @@ struct via_camera { u32 mbus_code; }; +/* buffer for one video frame */ +struct via_buffer { + /* common v4l buffer stuff -- must be first */ + struct vb2_v4l2_buffer vbuf; + struct list_head queue; +}; + /* * Yes, this is a hack, but there's only going to be one of these * on any system we know of. @@ -323,28 +325,15 @@ static irqreturn_t viacam_quick_irq(int irq, void *data) } /* - * Find the next videobuf buffer which has somebody waiting on it. + * Find the next buffer which has somebody waiting on it. */ -static struct videobuf_buffer *viacam_next_buffer(struct via_camera *cam) +static struct via_buffer *viacam_next_buffer(struct via_camera *cam) { - unsigned long flags; - struct videobuf_buffer *buf = NULL; - - spin_lock_irqsave(&cam->viadev->reg_lock, flags); if (cam->opstate != S_RUNNING) - goto out; + return NULL; if (list_empty(&cam->buffer_queue)) - goto out; - buf = list_entry(cam->buffer_queue.next, struct videobuf_buffer, queue); - if (!waitqueue_active(&buf->done)) {/* Nobody waiting */ - buf = NULL; - goto out; - } - list_del(&buf->queue); - buf->state = VIDEOBUF_ACTIVE; -out: - spin_unlock_irqrestore(&cam->viadev->reg_lock, flags); - return buf; + return NULL; + return list_entry(cam->buffer_queue.next, struct via_buffer, queue); } /* @@ -352,11 +341,12 @@ out: */ static irqreturn_t viacam_irq(int irq, void *data) { - int bufn; - struct videobuf_buffer *vb; struct via_camera *cam = data; - struct videobuf_dmabuf *vdma; + struct via_buffer *vb; + int bufn; + struct sg_table *sgt; + mutex_lock(&cam->lock); /* * If there is no place to put the data frame, don't bother * with anything else. @@ -374,12 +364,15 @@ static irqreturn_t viacam_irq(int irq, void *data) /* * Copy over the data and let any waiters know. */ - vdma = videobuf_to_dma(vb); - viafb_dma_copy_out_sg(cam->cb_offsets[bufn], vdma->sglist, vdma->sglen); - vb->state = VIDEOBUF_DONE; - vb->size = cam->user_format.sizeimage; - wake_up(&vb->done); + sgt = vb2_dma_sg_plane_desc(&vb->vbuf.vb2_buf, 0); + vb->vbuf.vb2_buf.timestamp = ktime_get_ns(); + viafb_dma_copy_out_sg(cam->cb_offsets[bufn], sgt->sgl, sgt->nents); + vb->vbuf.sequence = cam->sequence++; + vb->vbuf.field = V4L2_FIELD_NONE; + list_del(&vb->queue); + vb2_buffer_done(&vb->vbuf.vb2_buf, VB2_BUF_STATE_DONE); done: + mutex_unlock(&cam->lock); return IRQ_HANDLED; } @@ -555,7 +548,6 @@ static int viacam_config_controller(struct via_camera *cam) static void viacam_start_engine(struct via_camera *cam) { spin_lock_irq(&cam->viadev->reg_lock); - cam->next_buf = 0; viacam_write_reg_mask(cam, VCR_CAPINTC, VCR_CI_ENABLE, VCR_CI_ENABLE); viacam_int_enable(cam); (void) viacam_read_reg(cam, VCR_CAPINTC); /* Force post */ @@ -576,81 +568,117 @@ static void viacam_stop_engine(struct via_camera *cam) /* --------------------------------------------------------------------------*/ -/* Videobuf callback ops */ +/* vb2 callback ops */ -/* - * buffer_setup. The purpose of this one would appear to be to tell - * videobuf how big a single image is. It's also evidently up to us - * to put some sort of limit on the maximum number of buffers allowed. - */ -static int viacam_vb_buf_setup(struct videobuf_queue *q, - unsigned int *count, unsigned int *size) +static struct via_buffer *vb2_to_via_buffer(struct vb2_buffer *vb) { - struct via_camera *cam = q->priv_data; + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); - *size = cam->user_format.sizeimage; - if (*count == 0 || *count > 6) /* Arbitrary number */ - *count = 6; - return 0; + return container_of(vbuf, struct via_buffer, vbuf); } -/* - * Prepare a buffer. - */ -static int viacam_vb_buf_prepare(struct videobuf_queue *q, - struct videobuf_buffer *vb, enum v4l2_field field) +static void viacam_vb2_queue(struct vb2_buffer *vb) { - struct via_camera *cam = q->priv_data; - - vb->size = cam->user_format.sizeimage; - vb->width = cam->user_format.width; /* bytesperline???? */ - vb->height = cam->user_format.height; - vb->field = field; - if (vb->state == VIDEOBUF_NEEDS_INIT) { - int ret = videobuf_iolock(q, vb, NULL); - if (ret) - return ret; + struct via_camera *cam = vb2_get_drv_priv(vb->vb2_queue); + struct via_buffer *via = vb2_to_via_buffer(vb); + + list_add_tail(&via->queue, &cam->buffer_queue); +} + +static int viacam_vb2_prepare(struct vb2_buffer *vb) +{ + struct via_camera *cam = vb2_get_drv_priv(vb->vb2_queue); + + if (vb2_plane_size(vb, 0) < cam->user_format.sizeimage) { + cam_dbg(cam, + "Plane size too small (%lu < %u)\n", + vb2_plane_size(vb, 0), + cam->user_format.sizeimage); + return -EINVAL; } - vb->state = VIDEOBUF_PREPARED; + + vb2_set_plane_payload(vb, 0, cam->user_format.sizeimage); + return 0; } -/* - * We've got a buffer to put data into. - * - * FIXME: check for a running engine and valid buffers? - */ -static void viacam_vb_buf_queue(struct videobuf_queue *q, - struct videobuf_buffer *vb) +static int viacam_vb2_queue_setup(struct vb2_queue *vq, + unsigned int *nbufs, + unsigned int *num_planes, unsigned int sizes[], + struct device *alloc_devs[]) { - struct via_camera *cam = q->priv_data; + struct via_camera *cam = vb2_get_drv_priv(vq); + int size = cam->user_format.sizeimage; + + if (*num_planes) + return sizes[0] < size ? -EINVAL : 0; + + *num_planes = 1; + sizes[0] = size; + return 0; +} +static int viacam_vb2_start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct via_camera *cam = vb2_get_drv_priv(vq); + struct via_buffer *buf, *tmp; + int ret = 0; + + if (cam->opstate != S_IDLE) { + ret = -EBUSY; + goto out; + } /* - * Note that videobuf holds the lock when it calls - * us, so we need not (indeed, cannot) take it here. + * Configure things if need be. */ - vb->state = VIDEOBUF_QUEUED; - list_add_tail(&vb->queue, &cam->buffer_queue); + if (test_bit(CF_CONFIG_NEEDED, &cam->flags)) { + ret = viacam_configure_sensor(cam); + if (ret) + goto out; + ret = viacam_config_controller(cam); + if (ret) + goto out; + } + cam->sequence = 0; + /* + * If the CPU goes into C3, the DMA transfer gets corrupted and + * users start filing unsightly bug reports. Put in a "latency" + * requirement which will keep the CPU out of the deeper sleep + * states. + */ + pm_qos_add_request(&cam->qos_request, PM_QOS_CPU_DMA_LATENCY, 50); + viacam_start_engine(cam); + return 0; +out: + list_for_each_entry_safe(buf, tmp, &cam->buffer_queue, queue) { + list_del(&buf->queue); + vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_QUEUED); + } + return ret; } -/* - * Free a buffer. - */ -static void viacam_vb_buf_release(struct videobuf_queue *q, - struct videobuf_buffer *vb) +static void viacam_vb2_stop_streaming(struct vb2_queue *vq) { - struct via_camera *cam = q->priv_data; + struct via_camera *cam = vb2_get_drv_priv(vq); + struct via_buffer *buf, *tmp; + + pm_qos_remove_request(&cam->qos_request); + viacam_stop_engine(cam); - videobuf_dma_unmap(&cam->platdev->dev, videobuf_to_dma(vb)); - videobuf_dma_free(videobuf_to_dma(vb)); - vb->state = VIDEOBUF_NEEDS_INIT; + list_for_each_entry_safe(buf, tmp, &cam->buffer_queue, queue) { + list_del(&buf->queue); + vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_ERROR); + } } -static const struct videobuf_queue_ops viacam_vb_ops = { - .buf_setup = viacam_vb_buf_setup, - .buf_prepare = viacam_vb_buf_prepare, - .buf_queue = viacam_vb_buf_queue, - .buf_release = viacam_vb_buf_release, +static const struct vb2_ops viacam_vb2_ops = { + .queue_setup = viacam_vb2_queue_setup, + .buf_queue = viacam_vb2_queue, + .buf_prepare = viacam_vb2_prepare, + .start_streaming = viacam_vb2_start_streaming, + .stop_streaming = viacam_vb2_stop_streaming, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, }; /* --------------------------------------------------------------------------*/ @@ -678,15 +706,7 @@ static int viacam_open(struct file *filp) } via_sensor_power_up(cam); set_bit(CF_CONFIG_NEEDED, &cam->flags); - /* - * Hook into videobuf. Evidently this cannot fail. - */ - videobuf_queue_sg_init(&cam->vb_queue, &viacam_vb_ops, - &cam->platdev->dev, &cam->viadev->reg_lock, - V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE, - sizeof(struct videobuf_buffer), cam, NULL); } - (cam->users)++; out: mutex_unlock(&cam->lock); return ret; @@ -698,108 +718,27 @@ static int viacam_release(struct file *filp) bool last_open; mutex_lock(&cam->lock); - (cam->users)--; last_open = v4l2_fh_is_singular_file(filp); - /* - * If the "owner" is closing, shut down any ongoing - * operations. - */ - if (filp == cam->owner) { - videobuf_stop(&cam->vb_queue); - /* - * We don't hold the spinlock here, but, if release() - * is being called by the owner, nobody else will - * be changing the state. And an extra stop would - * not hurt anyway. - */ - if (cam->opstate != S_IDLE) - viacam_stop_engine(cam); - cam->owner = NULL; - } + _vb2_fop_release(filp, NULL); /* * Last one out needs to turn out the lights. */ if (last_open) { - videobuf_mmap_free(&cam->vb_queue); via_sensor_power_down(cam); viafb_release_dma(); } - v4l2_fh_release(filp); mutex_unlock(&cam->lock); return 0; } -/* - * Read a frame from the device. - */ -static ssize_t viacam_read(struct file *filp, char __user *buffer, - size_t len, loff_t *pos) -{ - struct via_camera *cam = video_drvdata(filp); - int ret; - - mutex_lock(&cam->lock); - /* - * Enforce the V4l2 "only one owner gets to read data" rule. - */ - if (cam->owner && cam->owner != filp) { - ret = -EBUSY; - goto out_unlock; - } - cam->owner = filp; - /* - * Do we need to configure the hardware? - */ - if (test_bit(CF_CONFIG_NEEDED, &cam->flags)) { - ret = viacam_configure_sensor(cam); - if (!ret) - ret = viacam_config_controller(cam); - if (ret) - goto out_unlock; - } - /* - * Fire up the capture engine, then have videobuf do - * the heavy lifting. Someday it would be good to avoid - * stopping and restarting the engine each time. - */ - INIT_LIST_HEAD(&cam->buffer_queue); - viacam_start_engine(cam); - ret = videobuf_read_stream(&cam->vb_queue, buffer, len, pos, 0, - filp->f_flags & O_NONBLOCK); - viacam_stop_engine(cam); - /* videobuf_stop() ?? */ - -out_unlock: - mutex_unlock(&cam->lock); - return ret; -} - - -static __poll_t viacam_poll(struct file *filp, struct poll_table_struct *pt) -{ - struct via_camera *cam = video_drvdata(filp); - - return v4l2_ctrl_poll(filp, pt) | videobuf_poll_stream(filp, &cam->vb_queue, pt); -} - - -static int viacam_mmap(struct file *filp, struct vm_area_struct *vma) -{ - struct via_camera *cam = video_drvdata(filp); - - return videobuf_mmap_mapper(&cam->vb_queue, vma); -} - - - static const struct v4l2_file_operations viacam_fops = { .owner = THIS_MODULE, .open = viacam_open, .release = viacam_release, - .read = viacam_read, - .poll = viacam_poll, - .mmap = viacam_mmap, - .unlocked_ioctl = video_ioctl2, + .read = vb2_fop_read, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, + .unlocked_ioctl = video_ioctl2, }; /*----------------------------------------------------------------------------*/ @@ -926,12 +865,8 @@ static int viacam_try_fmt_vid_cap(struct file *filp, void *priv, { struct via_camera *cam = video_drvdata(filp); struct v4l2_format sfmt; - int ret; - mutex_lock(&cam->lock); - ret = viacam_do_try_fmt(cam, &fmt->fmt.pix, &sfmt.fmt.pix); - mutex_unlock(&cam->lock); - return ret; + return viacam_do_try_fmt(cam, &fmt->fmt.pix, &sfmt.fmt.pix); } @@ -940,9 +875,7 @@ static int viacam_g_fmt_vid_cap(struct file *filp, void *priv, { struct via_camera *cam = video_drvdata(filp); - mutex_lock(&cam->lock); fmt->fmt.pix = cam->user_format; - mutex_unlock(&cam->lock); return 0; } @@ -958,18 +891,15 @@ static int viacam_s_fmt_vid_cap(struct file *filp, void *priv, * Camera must be idle or we can't mess with the * video setup. */ - mutex_lock(&cam->lock); - if (cam->opstate != S_IDLE) { - ret = -EBUSY; - goto out; - } + if (cam->opstate != S_IDLE) + return -EBUSY; /* * Let the sensor code look over and tweak the * requested formatting. */ ret = viacam_do_try_fmt(cam, &fmt->fmt.pix, &sfmt.fmt.pix); if (ret) - goto out; + return ret; /* * OK, let's commit to the new format. */ @@ -979,8 +909,6 @@ static int viacam_s_fmt_vid_cap(struct file *filp, void *priv, ret = viacam_configure_sensor(cam); if (!ret) ret = viacam_config_controller(cam); -out: - mutex_unlock(&cam->lock); return ret; } @@ -993,140 +921,22 @@ static int viacam_querycap(struct file *filp, void *priv, return 0; } -/* - * Streaming operations - pure videobuf stuff. - */ -static int viacam_reqbufs(struct file *filp, void *priv, - struct v4l2_requestbuffers *rb) -{ - struct via_camera *cam = video_drvdata(filp); - - return videobuf_reqbufs(&cam->vb_queue, rb); -} - -static int viacam_querybuf(struct file *filp, void *priv, - struct v4l2_buffer *buf) -{ - struct via_camera *cam = video_drvdata(filp); - - return videobuf_querybuf(&cam->vb_queue, buf); -} - -static int viacam_qbuf(struct file *filp, void *priv, struct v4l2_buffer *buf) -{ - struct via_camera *cam = video_drvdata(filp); - - return videobuf_qbuf(&cam->vb_queue, buf); -} - -static int viacam_dqbuf(struct file *filp, void *priv, struct v4l2_buffer *buf) -{ - struct via_camera *cam = video_drvdata(filp); - - return videobuf_dqbuf(&cam->vb_queue, buf, filp->f_flags & O_NONBLOCK); -} - -static int viacam_streamon(struct file *filp, void *priv, enum v4l2_buf_type t) -{ - struct via_camera *cam = video_drvdata(filp); - int ret = 0; - - if (t != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - - mutex_lock(&cam->lock); - if (cam->opstate != S_IDLE) { - ret = -EBUSY; - goto out; - } - /* - * Enforce the V4l2 "only one owner gets to read data" rule. - */ - if (cam->owner && cam->owner != filp) { - ret = -EBUSY; - goto out; - } - cam->owner = filp; - /* - * Configure things if need be. - */ - if (test_bit(CF_CONFIG_NEEDED, &cam->flags)) { - ret = viacam_configure_sensor(cam); - if (ret) - goto out; - ret = viacam_config_controller(cam); - if (ret) - goto out; - } - /* - * If the CPU goes into C3, the DMA transfer gets corrupted and - * users start filing unsightly bug reports. Put in a "latency" - * requirement which will keep the CPU out of the deeper sleep - * states. - */ - pm_qos_add_request(&cam->qos_request, PM_QOS_CPU_DMA_LATENCY, 50); - /* - * Fire things up. - */ - INIT_LIST_HEAD(&cam->buffer_queue); - ret = videobuf_streamon(&cam->vb_queue); - if (!ret) - viacam_start_engine(cam); -out: - mutex_unlock(&cam->lock); - return ret; -} - -static int viacam_streamoff(struct file *filp, void *priv, enum v4l2_buf_type t) -{ - struct via_camera *cam = video_drvdata(filp); - int ret; - - if (t != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - mutex_lock(&cam->lock); - if (cam->opstate != S_RUNNING) { - ret = -EINVAL; - goto out; - } - pm_qos_remove_request(&cam->qos_request); - viacam_stop_engine(cam); - /* - * Videobuf will recycle all of the outstanding buffers, but - * we should be sure we don't retain any references to - * any of them. - */ - ret = videobuf_streamoff(&cam->vb_queue); - INIT_LIST_HEAD(&cam->buffer_queue); -out: - mutex_unlock(&cam->lock); - return ret; -} - /* G/S_PARM */ static int viacam_g_parm(struct file *filp, void *priv, struct v4l2_streamparm *parm) { struct via_camera *cam = video_drvdata(filp); - int ret; - mutex_lock(&cam->lock); - ret = v4l2_g_parm_cap(video_devdata(filp), cam->sensor, parm); - mutex_unlock(&cam->lock); - return ret; + return v4l2_g_parm_cap(video_devdata(filp), cam->sensor, parm); } static int viacam_s_parm(struct file *filp, void *priv, struct v4l2_streamparm *parm) { struct via_camera *cam = video_drvdata(filp); - int ret; - mutex_lock(&cam->lock); - ret = v4l2_s_parm_cap(video_devdata(filp), cam->sensor, parm); - mutex_unlock(&cam->lock); - return ret; + return v4l2_s_parm_cap(video_devdata(filp), cam->sensor, parm); } static int viacam_enum_framesizes(struct file *filp, void *priv, @@ -1172,9 +982,7 @@ static int viacam_enum_frameintervals(struct file *filp, void *priv, if (interval->width < QCIF_WIDTH || interval->width > VGA_WIDTH || interval->height < QCIF_HEIGHT || interval->height > VGA_HEIGHT) return -EINVAL; - mutex_lock(&cam->lock); ret = sensor_call(cam, pad, enum_frame_interval, NULL, &fie); - mutex_unlock(&cam->lock); if (ret) return ret; interval->type = V4L2_FRMIVAL_TYPE_DISCRETE; @@ -1182,8 +990,6 @@ static int viacam_enum_frameintervals(struct file *filp, void *priv, return 0; } - - static const struct v4l2_ioctl_ops viacam_ioctl_ops = { .vidioc_enum_input = viacam_enum_input, .vidioc_g_input = viacam_g_input, @@ -1193,12 +999,15 @@ static const struct v4l2_ioctl_ops viacam_ioctl_ops = { .vidioc_g_fmt_vid_cap = viacam_g_fmt_vid_cap, .vidioc_s_fmt_vid_cap = viacam_s_fmt_vid_cap, .vidioc_querycap = viacam_querycap, - .vidioc_reqbufs = viacam_reqbufs, - .vidioc_querybuf = viacam_querybuf, - .vidioc_qbuf = viacam_qbuf, - .vidioc_dqbuf = viacam_dqbuf, - .vidioc_streamon = viacam_streamon, - .vidioc_streamoff = viacam_streamoff, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, .vidioc_g_parm = viacam_g_parm, .vidioc_s_parm = viacam_s_parm, .vidioc_enum_framesizes = viacam_enum_framesizes, @@ -1242,7 +1051,7 @@ static int viacam_resume(void *priv) /* * Make sure the sensor's power state is correct */ - if (cam->users > 0) + if (!list_empty(&cam->vdev.fh_list)) via_sensor_power_up(cam); else via_sensor_power_down(cam); @@ -1327,6 +1136,7 @@ static int viacam_probe(struct platform_device *pdev) int ret; struct i2c_adapter *sensor_adapter; struct viafb_dev *viadev = pdev->dev.platform_data; + struct vb2_queue *vq; struct i2c_board_info ov7670_info = { .type = "ov7670", .addr = 0x42 >> 1, @@ -1370,8 +1180,6 @@ static int viacam_probe(struct platform_device *pdev) via_cam_info = cam; cam->platdev = pdev; cam->viadev = viadev; - cam->users = 0; - cam->owner = NULL; cam->opstate = S_IDLE; cam->user_format = cam->sensor_format = viacam_def_pix_format; mutex_init(&cam->lock); @@ -1432,11 +1240,27 @@ static int viacam_probe(struct platform_device *pdev) viacam_irq, IRQF_SHARED, "via-camera", cam); if (ret) goto out_power_down; + + vq = &cam->vq; + vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_READ; + vq->drv_priv = cam; + vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + vq->buf_struct_size = sizeof(struct via_buffer); + vq->dev = cam->v4l2_dev.dev; + + vq->ops = &viacam_vb2_ops; + vq->mem_ops = &vb2_dma_sg_memops; + vq->lock = &cam->lock; + + ret = vb2_queue_init(vq); /* * Tell V4l2 that we exist. */ cam->vdev = viacam_v4l_template; cam->vdev.v4l2_dev = &cam->v4l2_dev; + cam->vdev.lock = &cam->lock; + cam->vdev.queue = vq; video_set_drvdata(&cam->vdev, cam); ret = video_register_device(&cam->vdev, VFL_TYPE_GRABBER, -1); if (ret) |
