From: Lad, Prabhakar Date: Fri, 16 May 2014 13:33:31 +0000 (-0300) Subject: [media] media: davinci: vpif_capture: initalize vb2 queue and DMA context during... X-Git-Tag: firefly_0821_release~176^2~3573^2~89 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=fa09accc662a85ad91b2021689f37540a5185dbd;p=firefly-linux-kernel-4.4.55.git [media] media: davinci: vpif_capture: initalize vb2 queue and DMA context during probe this patch moves the initalization of vb2 queue and the DMA context to probe() and clean up in remove() callback respectively. Signed-off-by: Lad, Prabhakar Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c index d09a27a23c5d..b035c88dd0a6 100644 --- a/drivers/media/platform/davinci/vpif_capture.c +++ b/drivers/media/platform/davinci/vpif_capture.c @@ -71,6 +71,13 @@ static struct device *vpif_dev; static void vpif_calculate_offsets(struct channel_obj *ch); static void vpif_config_addr(struct channel_obj *ch, int muxmode); +static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} }; + +static inline struct vpif_cap_buffer *to_vpif_buffer(struct vb2_buffer *vb) +{ + return container_of(vb, struct vpif_cap_buffer, vb); +} + /** * buffer_prepare : callback function for buffer prepare * @vb: ptr to vb2_buffer @@ -81,10 +88,8 @@ static void vpif_config_addr(struct channel_obj *ch, int muxmode); */ static int vpif_buffer_prepare(struct vb2_buffer *vb) { - /* Get the file handle object and channel object */ - struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue); struct vb2_queue *q = vb->vb2_queue; - struct channel_obj *ch = fh->channel; + struct channel_obj *ch = vb2_get_drv_priv(q); struct common_obj *common; unsigned long addr; @@ -131,9 +136,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) { - /* Get the file handle object and channel object */ - struct vpif_fh *fh = vb2_get_drv_priv(vq); - struct channel_obj *ch = fh->channel; + struct channel_obj *ch = vb2_get_drv_priv(vq); struct common_obj *common; unsigned long size; @@ -183,11 +186,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq, */ static void vpif_buffer_queue(struct vb2_buffer *vb) { - /* Get the file handle object and channel object */ - struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue); - struct channel_obj *ch = fh->channel; - struct vpif_cap_buffer *buf = container_of(vb, - struct vpif_cap_buffer, vb); + struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue); + struct vpif_cap_buffer *buf = to_vpif_buffer(vb); struct common_obj *common; unsigned long flags; @@ -210,11 +210,8 @@ static void vpif_buffer_queue(struct vb2_buffer *vb) */ static void vpif_buf_cleanup(struct vb2_buffer *vb) { - /* Get the file handle object and channel object */ - struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue); - struct vpif_cap_buffer *buf = container_of(vb, - struct vpif_cap_buffer, vb); - struct channel_obj *ch = fh->channel; + struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue); + struct vpif_cap_buffer *buf = to_vpif_buffer(vb); struct common_obj *common; unsigned long flags; @@ -229,8 +226,7 @@ static void vpif_buf_cleanup(struct vb2_buffer *vb) static void vpif_wait_prepare(struct vb2_queue *vq) { - struct vpif_fh *fh = vb2_get_drv_priv(vq); - struct channel_obj *ch = fh->channel; + struct channel_obj *ch = vb2_get_drv_priv(vq); struct common_obj *common; common = &ch->common[VPIF_VIDEO_INDEX]; @@ -239,8 +235,7 @@ static void vpif_wait_prepare(struct vb2_queue *vq) static void vpif_wait_finish(struct vb2_queue *vq) { - struct vpif_fh *fh = vb2_get_drv_priv(vq); - struct channel_obj *ch = fh->channel; + struct channel_obj *ch = vb2_get_drv_priv(vq); struct common_obj *common; common = &ch->common[VPIF_VIDEO_INDEX]; @@ -249,23 +244,18 @@ static void vpif_wait_finish(struct vb2_queue *vq) static int vpif_buffer_init(struct vb2_buffer *vb) { - struct vpif_cap_buffer *buf = container_of(vb, - struct vpif_cap_buffer, vb); + struct vpif_cap_buffer *buf = to_vpif_buffer(vb); INIT_LIST_HEAD(&buf->list); return 0; } -static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = - { {1, 1} }; - static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count) { struct vpif_capture_config *vpif_config_data = vpif_dev->platform_data; - struct vpif_fh *fh = vb2_get_drv_priv(vq); - struct channel_obj *ch = fh->channel; + struct channel_obj *ch = vb2_get_drv_priv(vq); struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; struct vpif_params *vpif = &ch->vpifparams; unsigned long addr = 0; @@ -348,8 +338,7 @@ static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count) /* abort streaming and wait for last buffer */ static void vpif_stop_streaming(struct vb2_queue *vq) { - struct vpif_fh *fh = vb2_get_drv_priv(vq); - struct channel_obj *ch = fh->channel; + struct channel_obj *ch = vb2_get_drv_priv(vq); struct common_obj *common; unsigned long flags; @@ -951,13 +940,9 @@ static int vpif_release(struct file *filep) mutex_lock(&common->lock); /* if this instance is doing IO */ - if (fh->io_allowed[VPIF_VIDEO_INDEX]) { + if (fh->io_allowed[VPIF_VIDEO_INDEX]) /* Reset io_usrs member of channel object */ common->io_usrs = 0; - /* Free buffers allocated */ - vb2_queue_release(&common->buffer_queue); - vb2_dma_contig_cleanup_ctx(common->alloc_ctx); - } /* Decrement channel usrs counter */ ch->usrs--; @@ -987,8 +972,6 @@ static int vpif_reqbufs(struct file *file, void *priv, struct channel_obj *ch = fh->channel; struct common_obj *common; u8 index = 0; - struct vb2_queue *q; - int ret; vpif_dbg(2, debug, "vpif_reqbufs\n"); @@ -1014,35 +997,12 @@ static int vpif_reqbufs(struct file *file, void *priv, if (0 != common->io_usrs) return -EBUSY; - /* Initialize videobuf2 queue as per the buffer type */ - common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev); - if (IS_ERR(common->alloc_ctx)) { - vpif_err("Failed to get the context\n"); - return PTR_ERR(common->alloc_ctx); - } - q = &common->buffer_queue; - q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - q->io_modes = VB2_MMAP | VB2_USERPTR; - q->drv_priv = fh; - q->ops = &video_qops; - q->mem_ops = &vb2_dma_contig_memops; - q->buf_struct_size = sizeof(struct vpif_cap_buffer); - q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; - q->min_buffers_needed = 1; - - ret = vb2_queue_init(q); - if (ret) { - vpif_err("vpif_capture: vb2_queue_init() failed\n"); - vb2_dma_contig_cleanup_ctx(common->alloc_ctx); - return ret; - } /* Set io allowed member of file handle to TRUE */ fh->io_allowed[index] = 1; /* Increment io usrs member of channel object to 1 */ common->io_usrs = 1; /* Store type of memory requested in channel object */ common->memory = reqbuf->memory; - INIT_LIST_HEAD(&common->dma_queue); /* Allocate buffers */ return vb2_reqbufs(&common->buffer_queue, reqbuf); @@ -1998,6 +1958,7 @@ static int vpif_probe_complete(void) { struct common_obj *common; struct channel_obj *ch; + struct vb2_queue *q; int i, j, err, k; for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) { @@ -2016,6 +1977,32 @@ static int vpif_probe_complete(void) if (err) goto probe_out; + /* Initialize vb2 queue */ + q = &common->buffer_queue; + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; + q->drv_priv = ch; + q->ops = &video_qops; + q->mem_ops = &vb2_dma_contig_memops; + q->buf_struct_size = sizeof(struct vpif_cap_buffer); + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->min_buffers_needed = 1; + + err = vb2_queue_init(q); + if (err) { + vpif_err("vpif_capture: vb2_queue_init() failed\n"); + goto probe_out; + } + + common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev); + if (IS_ERR(common->alloc_ctx)) { + vpif_err("Failed to get the context\n"); + err = PTR_ERR(common->alloc_ctx); + goto probe_out; + } + + INIT_LIST_HEAD(&common->dma_queue); + err = video_register_device(ch->video_dev, VFL_TYPE_GRABBER, (j ? 1 : 0)); if (err) @@ -2029,6 +2016,8 @@ probe_out: for (k = 0; k < j; k++) { /* Get the pointer to the channel object */ ch = vpif_obj.dev[k]; + common = &ch->common[k]; + vb2_dma_contig_cleanup_ctx(common->alloc_ctx); /* Unregister video device */ video_unregister_device(ch->video_dev); } @@ -2207,6 +2196,7 @@ vpif_unregister: */ static int vpif_remove(struct platform_device *device) { + struct common_obj *common; struct channel_obj *ch; int i; @@ -2217,6 +2207,8 @@ static int vpif_remove(struct platform_device *device) for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { /* Get the pointer to the channel object */ ch = vpif_obj.dev[i]; + common = &ch->common[i]; + vb2_dma_contig_cleanup_ctx(common->alloc_ctx); /* Unregister video device */ video_unregister_device(ch->video_dev); kfree(vpif_obj.dev[i]);