From ee12b049104118a58ac13da207a84c867191b17a Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Mon, 25 Mar 2013 16:43:08 -0300 Subject: [PATCH] [media] s5p-fimc: Use vb2 ioctl helpers in fimc-lite Replace some ioctl, file and video buffer queue operation handlers with the videobuf2 helpers. This allows to get rid of significant amount of boilerplate. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/s5p-fimc/fimc-lite.c | 170 ++++++++-------------------- 1 file changed, 45 insertions(+), 125 deletions(-) diff --git a/drivers/media/platform/s5p-fimc/fimc-lite.c b/drivers/media/platform/s5p-fimc/fimc-lite.c index d8afbbc..b64297b 100644 --- a/drivers/media/platform/s5p-fimc/fimc-lite.c +++ b/drivers/media/platform/s5p-fimc/fimc-lite.c @@ -425,24 +425,12 @@ static void buffer_queue(struct vb2_buffer *vb) spin_unlock_irqrestore(&fimc->slock, flags); } -static void fimc_lock(struct vb2_queue *vq) -{ - struct fimc_lite *fimc = vb2_get_drv_priv(vq); - mutex_lock(&fimc->lock); -} - -static void fimc_unlock(struct vb2_queue *vq) -{ - struct fimc_lite *fimc = vb2_get_drv_priv(vq); - mutex_unlock(&fimc->lock); -} - static const struct vb2_ops fimc_lite_qops = { .queue_setup = queue_setup, .buf_prepare = buffer_prepare, .buf_queue = buffer_queue, - .wait_prepare = fimc_unlock, - .wait_finish = fimc_lock, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, .start_streaming = start_streaming, .stop_streaming = stop_streaming, }; @@ -467,99 +455,69 @@ static int fimc_lite_open(struct file *file) mutex_lock(&fimc->lock); if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) { ret = -EBUSY; - goto done; + goto unlock; } set_bit(ST_FLITE_IN_USE, &fimc->state); ret = pm_runtime_get_sync(&fimc->pdev->dev); if (ret < 0) - goto done; + goto unlock; ret = v4l2_fh_open(file); if (ret < 0) - goto done; + goto err_pm; - if (++fimc->ref_count == 1 && - atomic_read(&fimc->out_path) == FIMC_IO_DMA) { - ret = fimc_pipeline_call(fimc, open, &fimc->pipeline, - &fimc->vfd.entity, true); - if (ret < 0) { - pm_runtime_put_sync(&fimc->pdev->dev); - fimc->ref_count--; - v4l2_fh_release(file); - clear_bit(ST_FLITE_IN_USE, &fimc->state); - } + if (!v4l2_fh_is_singular_file(file) || + atomic_read(&fimc->out_path) != FIMC_IO_DMA) + goto unlock; + ret = fimc_pipeline_call(fimc, open, &fimc->pipeline, + me, true); + if (!ret) { fimc_lite_clear_event_counters(fimc); + fimc->ref_count++; + goto unlock; } -done: + + v4l2_fh_release(file); +err_pm: + pm_runtime_put_sync(&fimc->pdev->dev); + clear_bit(ST_FLITE_IN_USE, &fimc->state); +unlock: mutex_unlock(&fimc->lock); mutex_unlock(&me->parent->graph_mutex); return ret; } -static int fimc_lite_close(struct file *file) +static int fimc_lite_release(struct file *file) { struct fimc_lite *fimc = video_drvdata(file); - int ret; mutex_lock(&fimc->lock); - if (--fimc->ref_count == 0 && + if (v4l2_fh_is_singular_file(file) && atomic_read(&fimc->out_path) == FIMC_IO_DMA) { clear_bit(ST_FLITE_IN_USE, &fimc->state); fimc_lite_stop_capture(fimc, false); fimc_pipeline_call(fimc, close, &fimc->pipeline); - clear_bit(ST_FLITE_SUSPENDED, &fimc->state); + fimc->ref_count--; } + vb2_fop_release(file); pm_runtime_put(&fimc->pdev->dev); + clear_bit(ST_FLITE_SUSPENDED, &fimc->state); - if (fimc->ref_count == 0) - vb2_queue_release(&fimc->vb_queue); - - ret = v4l2_fh_release(file); - - mutex_unlock(&fimc->lock); - return ret; -} - -static unsigned int fimc_lite_poll(struct file *file, - struct poll_table_struct *wait) -{ - struct fimc_lite *fimc = video_drvdata(file); - int ret; - - if (mutex_lock_interruptible(&fimc->lock)) - return POLL_ERR; - - ret = vb2_poll(&fimc->vb_queue, file, wait); - mutex_unlock(&fimc->lock); - - return ret; -} - -static int fimc_lite_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct fimc_lite *fimc = video_drvdata(file); - int ret; - - if (mutex_lock_interruptible(&fimc->lock)) - return -ERESTARTSYS; - - ret = vb2_mmap(&fimc->vb_queue, vma); mutex_unlock(&fimc->lock); - - return ret; + return 0; } static const struct v4l2_file_operations fimc_lite_fops = { .owner = THIS_MODULE, .open = fimc_lite_open, - .release = fimc_lite_close, - .poll = fimc_lite_poll, + .release = fimc_lite_release, + .poll = vb2_fop_poll, .unlocked_ioctl = video_ioctl2, - .mmap = fimc_lite_mmap, + .mmap = vb2_fop_mmap, }; /* @@ -720,7 +678,6 @@ static int fimc_lite_try_fmt_mplane(struct file *file, void *fh, struct v4l2_format *f) { struct fimc_lite *fimc = video_drvdata(file); - return fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, NULL); } @@ -812,12 +769,15 @@ static int fimc_lite_streamon(struct file *file, void *priv, return ret; ret = fimc_pipeline_validate(fimc); - if (ret) { - media_entity_pipeline_stop(entity); - return ret; - } + if (ret < 0) + goto err_p_stop; - return vb2_streamon(&fimc->vb_queue, type); + ret = vb2_ioctl_streamon(file, priv, type); + if (!ret) + return ret; +err_p_stop: + media_entity_pipeline_stop(entity); + return 0; } static int fimc_lite_streamoff(struct file *file, void *priv, @@ -826,7 +786,7 @@ static int fimc_lite_streamoff(struct file *file, void *priv, struct fimc_lite *fimc = video_drvdata(file); int ret; - ret = vb2_streamoff(&fimc->vb_queue, type); + ret = vb2_ioctl_streamoff(file, priv, type); if (ret == 0) media_entity_pipeline_stop(&fimc->vfd.entity); return ret; @@ -839,53 +799,13 @@ static int fimc_lite_reqbufs(struct file *file, void *priv, int ret; reqbufs->count = max_t(u32, FLITE_REQ_BUFS_MIN, reqbufs->count); - ret = vb2_reqbufs(&fimc->vb_queue, reqbufs); + ret = vb2_ioctl_reqbufs(file, priv, reqbufs); if (!ret) fimc->reqbufs_count = reqbufs->count; return ret; } -static int fimc_lite_querybuf(struct file *file, void *priv, - struct v4l2_buffer *buf) -{ - struct fimc_lite *fimc = video_drvdata(file); - - return vb2_querybuf(&fimc->vb_queue, buf); -} - -static int fimc_lite_qbuf(struct file *file, void *priv, - struct v4l2_buffer *buf) -{ - struct fimc_lite *fimc = video_drvdata(file); - - return vb2_qbuf(&fimc->vb_queue, buf); -} - -static int fimc_lite_dqbuf(struct file *file, void *priv, - struct v4l2_buffer *buf) -{ - struct fimc_lite *fimc = video_drvdata(file); - - return vb2_dqbuf(&fimc->vb_queue, buf, file->f_flags & O_NONBLOCK); -} - -static int fimc_lite_create_bufs(struct file *file, void *priv, - struct v4l2_create_buffers *create) -{ - struct fimc_lite *fimc = video_drvdata(file); - - return vb2_create_bufs(&fimc->vb_queue, create); -} - -static int fimc_lite_prepare_buf(struct file *file, void *priv, - struct v4l2_buffer *b) -{ - struct fimc_lite *fimc = video_drvdata(file); - - return vb2_prepare_buf(&fimc->vb_queue, b); -} - /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */ static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b) { @@ -965,11 +885,11 @@ static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = { .vidioc_g_selection = fimc_lite_g_selection, .vidioc_s_selection = fimc_lite_s_selection, .vidioc_reqbufs = fimc_lite_reqbufs, - .vidioc_querybuf = fimc_lite_querybuf, - .vidioc_prepare_buf = fimc_lite_prepare_buf, - .vidioc_create_bufs = fimc_lite_create_bufs, - .vidioc_qbuf = fimc_lite_qbuf, - .vidioc_dqbuf = fimc_lite_dqbuf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, .vidioc_streamon = fimc_lite_streamon, .vidioc_streamoff = fimc_lite_streamoff, }; @@ -1310,8 +1230,7 @@ static int fimc_lite_subdev_registered(struct v4l2_subdev *sd) vfd->v4l2_dev = sd->v4l2_dev; vfd->minor = -1; vfd->release = video_device_release_empty; - vfd->lock = &fimc->lock; - fimc->ref_count = 0; + vfd->queue = q; fimc->reqbufs_count = 0; INIT_LIST_HEAD(&fimc->pending_buf_q); @@ -1325,6 +1244,7 @@ static int fimc_lite_subdev_registered(struct v4l2_subdev *sd) q->buf_struct_size = sizeof(struct flite_buffer); q->drv_priv = fimc; q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->lock = &fimc->lock; ret = vb2_queue_init(q); if (ret < 0) -- 2.7.4