From c444914af9261b57c9a559cc324dcadce7765bd2 Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Mon, 25 Mar 2013 16:36:35 -0300 Subject: [PATCH] [media] s5p-fimc: Use vb2 ioctl/fop helpers in FIMC capture driver mmap/poll file operation and several ioctl handlers are replaced with the vb2 helper functions. Some helpers are used indirectly to maintain the buffer queue ownership. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- .../media/platform/s5p-fimc/fimc-capture.c | 153 ++++-------------- drivers/media/platform/s5p-fimc/fimc-m2m.c | 9 +- 2 files changed, 36 insertions(+), 126 deletions(-) diff --git a/drivers/media/platform/s5p-fimc/fimc-capture.c b/drivers/media/platform/s5p-fimc/fimc-capture.c index 257afc16191..e9928cda638 100644 --- a/drivers/media/platform/s5p-fimc/fimc-capture.c +++ b/drivers/media/platform/s5p-fimc/fimc-capture.c @@ -454,24 +454,12 @@ static void buffer_queue(struct vb2_buffer *vb) spin_unlock_irqrestore(&fimc->slock, flags); } -static void fimc_lock(struct vb2_queue *vq) -{ - struct fimc_ctx *ctx = vb2_get_drv_priv(vq); - mutex_lock(&ctx->fimc_dev->lock); -} - -static void fimc_unlock(struct vb2_queue *vq) -{ - struct fimc_ctx *ctx = vb2_get_drv_priv(vq); - mutex_unlock(&ctx->fimc_dev->lock); -} - static struct vb2_ops fimc_capture_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, }; @@ -530,7 +518,7 @@ static int fimc_capture_open(struct file *file) goto unlock; } - if (++fimc->vid_cap.refcnt == 1) { + if (v4l2_fh_is_singular_file(file)) { ret = fimc_pipeline_call(fimc, open, &fimc->pipeline, &fimc->vid_cap.vfd.entity, true); @@ -543,8 +531,9 @@ static int fimc_capture_open(struct file *file) if (ret < 0) { clear_bit(ST_CAPT_BUSY, &fimc->state); pm_runtime_put_sync(&fimc->pdev->dev); - fimc->vid_cap.refcnt--; v4l2_fh_release(file); + } else { + fimc->vid_cap.refcnt++; } } unlock: @@ -553,7 +542,7 @@ unlock: return ret; } -static int fimc_capture_close(struct file *file) +static int fimc_capture_release(struct file *file) { struct fimc_dev *fimc = video_drvdata(file); int ret; @@ -562,50 +551,20 @@ static int fimc_capture_close(struct file *file) mutex_lock(&fimc->lock); - if (--fimc->vid_cap.refcnt == 0) { + if (v4l2_fh_is_singular_file(file)) { clear_bit(ST_CAPT_BUSY, &fimc->state); fimc_stop_capture(fimc, false); fimc_pipeline_call(fimc, close, &fimc->pipeline); clear_bit(ST_CAPT_SUSPENDED, &fimc->state); + fimc->vid_cap.refcnt--; } pm_runtime_put(&fimc->pdev->dev); - if (fimc->vid_cap.refcnt == 0) { - vb2_queue_release(&fimc->vid_cap.vbq); + if (v4l2_fh_is_singular_file(file)) fimc_ctrls_delete(fimc->vid_cap.ctx); - } - - ret = v4l2_fh_release(file); - - mutex_unlock(&fimc->lock); - return ret; -} - -static unsigned int fimc_capture_poll(struct file *file, - struct poll_table_struct *wait) -{ - struct fimc_dev *fimc = video_drvdata(file); - int ret; - if (mutex_lock_interruptible(&fimc->lock)) - return POLL_ERR; - - ret = vb2_poll(&fimc->vid_cap.vbq, file, wait); - mutex_unlock(&fimc->lock); - - return ret; -} - -static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct fimc_dev *fimc = video_drvdata(file); - int ret; - - if (mutex_lock_interruptible(&fimc->lock)) - return -ERESTARTSYS; - - ret = vb2_mmap(&fimc->vid_cap.vbq, vma); + ret = vb2_fop_release(file); mutex_unlock(&fimc->lock); return ret; @@ -614,10 +573,10 @@ static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma) static const struct v4l2_file_operations fimc_capture_fops = { .owner = THIS_MODULE, .open = fimc_capture_open, - .release = fimc_capture_close, - .poll = fimc_capture_poll, + .release = fimc_capture_release, + .poll = vb2_fop_poll, .unlocked_ioctl = video_ioctl2, - .mmap = fimc_capture_mmap, + .mmap = vb2_fop_mmap, }; /* @@ -1247,7 +1206,7 @@ static int fimc_cap_streamon(struct file *file, void *priv, goto err_p_stop; } - ret = vb2_streamon(&vc->vbq, type); + ret = vb2_ioctl_streamon(file, priv, type); if (!ret) return ret; @@ -1262,7 +1221,7 @@ static int fimc_cap_streamoff(struct file *file, void *priv, struct fimc_dev *fimc = video_drvdata(file); int ret; - ret = vb2_streamoff(&fimc->vid_cap.vbq, type); + ret = vb2_ioctl_streamoff(file, priv, type); if (ret == 0) media_entity_pipeline_stop(&fimc->vid_cap.vfd.entity); @@ -1274,59 +1233,14 @@ static int fimc_cap_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *reqbufs) { struct fimc_dev *fimc = video_drvdata(file); - int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs); + int ret; + + ret = vb2_ioctl_reqbufs(file, priv, reqbufs); if (!ret) fimc->vid_cap.reqbufs_count = reqbufs->count; - return ret; -} - -static int fimc_cap_querybuf(struct file *file, void *priv, - struct v4l2_buffer *buf) -{ - struct fimc_dev *fimc = video_drvdata(file); - - return vb2_querybuf(&fimc->vid_cap.vbq, buf); -} - -static int fimc_cap_qbuf(struct file *file, void *priv, - struct v4l2_buffer *buf) -{ - struct fimc_dev *fimc = video_drvdata(file); - - return vb2_qbuf(&fimc->vid_cap.vbq, buf); -} - -static int fimc_cap_expbuf(struct file *file, void *priv, - struct v4l2_exportbuffer *eb) -{ - struct fimc_dev *fimc = video_drvdata(file); - - return vb2_expbuf(&fimc->vid_cap.vbq, eb); -} - -static int fimc_cap_dqbuf(struct file *file, void *priv, - struct v4l2_buffer *buf) -{ - struct fimc_dev *fimc = video_drvdata(file); - - return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK); -} - -static int fimc_cap_create_bufs(struct file *file, void *priv, - struct v4l2_create_buffers *create) -{ - struct fimc_dev *fimc = video_drvdata(file); - - return vb2_create_bufs(&fimc->vid_cap.vbq, create); -} - -static int fimc_cap_prepare_buf(struct file *file, void *priv, - struct v4l2_buffer *b) -{ - struct fimc_dev *fimc = video_drvdata(file); - return vb2_prepare_buf(&fimc->vid_cap.vbq, b); + return ret; } static int fimc_cap_g_selection(struct file *file, void *fh, @@ -1425,14 +1339,12 @@ static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = { .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane, .vidioc_reqbufs = fimc_cap_reqbufs, - .vidioc_querybuf = fimc_cap_querybuf, - - .vidioc_qbuf = fimc_cap_qbuf, - .vidioc_dqbuf = fimc_cap_dqbuf, - .vidioc_expbuf = fimc_cap_expbuf, - - .vidioc_prepare_buf = fimc_cap_prepare_buf, - .vidioc_create_bufs = fimc_cap_create_bufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_create_bufs = vb2_ioctl_create_bufs, .vidioc_streamon = fimc_cap_streamon, .vidioc_streamoff = fimc_cap_streamoff, @@ -1759,9 +1671,9 @@ static int fimc_register_capture_device(struct fimc_dev *fimc, struct v4l2_device *v4l2_dev) { struct video_device *vfd = &fimc->vid_cap.vfd; - struct fimc_vid_cap *vid_cap; + struct vb2_queue *q = &fimc->vid_cap.vbq; struct fimc_ctx *ctx; - struct vb2_queue *q; + struct fimc_vid_cap *vid_cap; int ret = -ENOMEM; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); @@ -1783,28 +1695,27 @@ static int fimc_register_capture_device(struct fimc_dev *fimc, vfd->v4l2_dev = v4l2_dev; vfd->minor = -1; vfd->release = video_device_release_empty; + vfd->queue = q; vfd->lock = &fimc->lock; video_set_drvdata(vfd, fimc); - vid_cap = &fimc->vid_cap; vid_cap->active_buf_cnt = 0; - vid_cap->reqbufs_count = 0; - vid_cap->refcnt = 0; + vid_cap->reqbufs_count = 0; + vid_cap->ctx = ctx; INIT_LIST_HEAD(&vid_cap->pending_buf_q); INIT_LIST_HEAD(&vid_cap->active_buf_q); - vid_cap->ctx = ctx; - q = &fimc->vid_cap.vbq; memset(q, 0, sizeof(*q)); q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; - q->drv_priv = fimc->vid_cap.ctx; + q->drv_priv = ctx; q->ops = &fimc_capture_qops; q->mem_ops = &vb2_dma_contig_memops; q->buf_struct_size = sizeof(struct fimc_vid_buffer); q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->lock = &fimc->lock; ret = vb2_queue_init(q); if (ret) diff --git a/drivers/media/platform/s5p-fimc/fimc-m2m.c b/drivers/media/platform/s5p-fimc/fimc-m2m.c index f3d535cdd87..c8509dd1776 100644 --- a/drivers/media/platform/s5p-fimc/fimc-m2m.c +++ b/drivers/media/platform/s5p-fimc/fimc-m2m.c @@ -667,16 +667,15 @@ static int fimc_m2m_open(struct file *file) struct fimc_ctx *ctx; int ret = -EBUSY; - dbg("pid: %d, state: 0x%lx, refcnt: %d", - task_pid_nr(current), fimc->state, fimc->vid_cap.refcnt); + pr_debug("pid: %d, state: %#lx\n", task_pid_nr(current), fimc->state); if (mutex_lock_interruptible(&fimc->lock)) return -ERESTARTSYS; /* - * Return if the corresponding video capture node - * is already opened. + * Don't allow simultaneous open() of the mem-to-mem and the + * capture video node that belong to same FIMC IP instance. */ - if (fimc->vid_cap.refcnt > 0) + if (test_bit(ST_CAPT_BUSY, &fimc->state)) goto unlock; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); -- 2.43.2