Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753083AbaJLUpN (ORCPT ); Sun, 12 Oct 2014 16:45:13 -0400 Received: from mail-wi0-f171.google.com ([209.85.212.171]:33313 "EHLO mail-wi0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752761AbaJLUky (ORCPT ); Sun, 12 Oct 2014 16:40:54 -0400 From: "Lad, Prabhakar" To: LMML Cc: LKML , DLOS , "Lad, Prabhakar" Subject: [PATCH 01/15] media: davinci: vpbe: initialize vb2 queue and DMA context in probe Date: Sun, 12 Oct 2014 21:40:31 +0100 Message-Id: <1413146445-7304-2-git-send-email-prabhakar.csengg@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1413146445-7304-1-git-send-email-prabhakar.csengg@gmail.com> References: <1413146445-7304-1-git-send-email-prabhakar.csengg@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org this patch moves the initialization of vb2 queue and the DMA context to probe() and clean up in remove() callback respectively. Signed-off-by: Lad, Prabhakar --- drivers/media/platform/davinci/vpbe_display.c | 128 ++++++++++++-------------- 1 file changed, 60 insertions(+), 68 deletions(-) diff --git a/drivers/media/platform/davinci/vpbe_display.c b/drivers/media/platform/davinci/vpbe_display.c index 73496d9..ff9eac4 100644 --- a/drivers/media/platform/davinci/vpbe_display.c +++ b/drivers/media/platform/davinci/vpbe_display.c @@ -207,10 +207,9 @@ static irqreturn_t venc_isr(int irq, void *arg) */ static int vpbe_buffer_prepare(struct vb2_buffer *vb) { - struct vpbe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); struct vb2_queue *q = vb->vb2_queue; - struct vpbe_layer *layer = fh->layer; - struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev; + struct vpbe_layer *layer = vb2_get_drv_priv(q); + struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; unsigned long addr; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, @@ -247,9 +246,8 @@ vpbe_buffer_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, { /* Get the file handle object and layer object */ - struct vpbe_fh *fh = vb2_get_drv_priv(vq); - struct vpbe_layer *layer = fh->layer; - struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev; + struct vpbe_layer *layer = vb2_get_drv_priv(vq); + struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n"); @@ -271,12 +269,11 @@ vpbe_buffer_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, static void vpbe_buffer_queue(struct vb2_buffer *vb) { /* Get the file handle object and layer object */ - struct vpbe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); struct vpbe_disp_buffer *buf = container_of(vb, struct vpbe_disp_buffer, vb); - struct vpbe_layer *layer = fh->layer; - struct vpbe_display *disp = fh->disp_dev; - struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev; + struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue); + struct vpbe_display *disp = layer->disp_dev; + struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; unsigned long flags; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, @@ -296,9 +293,8 @@ static void vpbe_buffer_queue(struct vb2_buffer *vb) static void vpbe_buf_cleanup(struct vb2_buffer *vb) { /* Get the file handle object and layer object */ - struct vpbe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); - struct vpbe_layer *layer = fh->layer; - struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev; + struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue); + struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; struct vpbe_disp_buffer *buf = container_of(vb, struct vpbe_disp_buffer, vb); unsigned long flags; @@ -314,16 +310,14 @@ static void vpbe_buf_cleanup(struct vb2_buffer *vb) static void vpbe_wait_prepare(struct vb2_queue *vq) { - struct vpbe_fh *fh = vb2_get_drv_priv(vq); - struct vpbe_layer *layer = fh->layer; + struct vpbe_layer *layer = vb2_get_drv_priv(vq); mutex_unlock(&layer->opslock); } static void vpbe_wait_finish(struct vb2_queue *vq) { - struct vpbe_fh *fh = vb2_get_drv_priv(vq); - struct vpbe_layer *layer = fh->layer; + struct vpbe_layer *layer = vb2_get_drv_priv(vq); mutex_lock(&layer->opslock); } @@ -339,8 +333,7 @@ static int vpbe_buffer_init(struct vb2_buffer *vb) static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count) { - struct vpbe_fh *fh = vb2_get_drv_priv(vq); - struct vpbe_layer *layer = fh->layer; + struct vpbe_layer *layer = vb2_get_drv_priv(vq); int ret; /* Get the next frame from the buffer queue */ @@ -354,7 +347,7 @@ static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count) layer->field_id = 0; /* Set parameters in OSD and VENC */ - ret = vpbe_set_osd_display_params(fh->disp_dev, layer); + ret = vpbe_set_osd_display_params(layer->disp_dev, layer); if (ret < 0) { struct vpbe_disp_buffer *buf, *tmp; @@ -379,9 +372,8 @@ static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count) static void vpbe_stop_streaming(struct vb2_queue *vq) { - struct vpbe_fh *fh = vb2_get_drv_priv(vq); - struct vpbe_layer *layer = fh->layer; - struct vpbe_display *disp = fh->disp_dev; + struct vpbe_layer *layer = vb2_get_drv_priv(vq); + struct vpbe_display *disp = layer->disp_dev; unsigned long flags; if (!vb2_is_streaming(vq)) @@ -1380,8 +1372,7 @@ static int vpbe_display_reqbufs(struct file *file, void *priv, struct vpbe_fh *fh = file->private_data; struct vpbe_layer *layer = fh->layer; struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev; - struct vb2_queue *q; - int ret; + v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_reqbufs\n"); if (V4L2_BUF_TYPE_VIDEO_OUTPUT != req_buf->type) { @@ -1394,39 +1385,14 @@ static int vpbe_display_reqbufs(struct file *file, void *priv, v4l2_err(&vpbe_dev->v4l2_dev, "not IO user\n"); return -EBUSY; } - /* Initialize videobuf queue as per the buffer type */ - layer->alloc_ctx = vb2_dma_contig_init_ctx(vpbe_dev->pdev); - if (IS_ERR(layer->alloc_ctx)) { - v4l2_err(&vpbe_dev->v4l2_dev, "Failed to get the context\n"); - return PTR_ERR(layer->alloc_ctx); - } - q = &layer->buffer_queue; - memset(q, 0, sizeof(*q)); - q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; - 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 vpbe_disp_buffer); - q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; - q->min_buffers_needed = 1; - - ret = vb2_queue_init(q); - if (ret) { - v4l2_err(&vpbe_dev->v4l2_dev, "vb2_queue_init() failed\n"); - vb2_dma_contig_cleanup_ctx(layer->alloc_ctx); - return ret; - } /* Set io allowed member of file handle to TRUE */ fh->io_allowed = 1; /* Increment io usrs member of layer object to 1 */ layer->io_usrs = 1; /* Store type of memory requested in layer object */ layer->memory = req_buf->memory; - /* Initialize buffer queue */ - INIT_LIST_HEAD(&layer->dma_queue); /* Allocate buffers */ - return vb2_reqbufs(q, req_buf); + return vb2_reqbufs(&layer->buffer_queue, req_buf); } /* @@ -1551,9 +1517,6 @@ static int vpbe_display_release(struct file *file) osd_device->ops.disable_layer(osd_device, layer->layer_info.id); layer->started = 0; - /* Free buffers allocated */ - vb2_queue_release(&layer->buffer_queue); - vb2_dma_contig_cleanup_ctx(&layer->buffer_queue); } /* Decrement layer usrs counter */ @@ -1724,9 +1687,10 @@ static int register_device(struct vpbe_layer *vpbe_display_layer, */ static int vpbe_display_probe(struct platform_device *pdev) { - struct vpbe_layer *vpbe_display_layer; struct vpbe_display *disp_dev; + struct v4l2_device *v4l2_dev; struct resource *res = NULL; + struct vb2_queue *q; int k; int i; int err; @@ -1748,13 +1712,14 @@ static int vpbe_display_probe(struct platform_device *pdev) vpbe_device_get); if (err < 0) return err; + + v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev; /* Initialize the vpbe display controller */ if (NULL != disp_dev->vpbe_dev->ops.initialize) { err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev, disp_dev->vpbe_dev); if (err) { - v4l2_err(&disp_dev->vpbe_dev->v4l2_dev, - "Error initing vpbe\n"); + v4l2_err(v4l2_dev, "Error initing vpbe\n"); err = -ENOMEM; goto probe_out; } @@ -1769,8 +1734,7 @@ static int vpbe_display_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!res) { - v4l2_err(&disp_dev->vpbe_dev->v4l2_dev, - "Unable to get VENC interrupt resource\n"); + v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n"); err = -ENODEV; goto probe_out; } @@ -1779,30 +1743,57 @@ static int vpbe_display_probe(struct platform_device *pdev) err = devm_request_irq(&pdev->dev, irq, venc_isr, 0, VPBE_DISPLAY_DRIVER, disp_dev); if (err) { - v4l2_err(&disp_dev->vpbe_dev->v4l2_dev, - "Unable to request interrupt\n"); + v4l2_err(v4l2_dev, "VPBE IRQ request failed\n"); goto probe_out; } for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { + /* initialize vb2 queue */ + q = &disp_dev->dev[i]->buffer_queue; + memset(q, 0, sizeof(*q)); + q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; + q->io_modes = VB2_MMAP | VB2_USERPTR; + q->drv_priv = disp_dev->dev[i]; + q->ops = &video_qops; + q->mem_ops = &vb2_dma_contig_memops; + q->buf_struct_size = sizeof(struct vpbe_disp_buffer); + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->min_buffers_needed = 1; + + err = vb2_queue_init(q); + if (err) { + v4l2_err(v4l2_dev, "vb2_queue_init() failed\n"); + goto probe_out; + } + + disp_dev->dev[i]->alloc_ctx = + vb2_dma_contig_init_ctx(disp_dev->vpbe_dev->pdev); + if (IS_ERR(disp_dev->dev[i]->alloc_ctx)) { + v4l2_err(v4l2_dev, "Failed to get the context\n"); + err = PTR_ERR(disp_dev->dev[i]->alloc_ctx); + goto probe_out; + } + + INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue); + if (register_device(disp_dev->dev[i], disp_dev, pdev)) { err = -ENODEV; goto probe_out; } } - printk(KERN_DEBUG "Successfully completed the probing of vpbe v4l2 device\n"); + v4l2_dbg(1, debug, v4l2_dev, + "Successfully completed the probing of vpbe v4l2 device\n"); + return 0; probe_out: for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) { - /* Get the pointer to the layer object */ - vpbe_display_layer = disp_dev->dev[k]; /* Unregister video device */ - if (vpbe_display_layer) { - video_unregister_device( - &vpbe_display_layer->video_dev); - kfree(disp_dev->dev[k]); + if (disp_dev->dev[k] != NULL) { + vb2_dma_contig_cleanup_ctx(disp_dev->dev[k]->alloc_ctx); + video_unregister_device(&disp_dev->dev[k]->video_dev); + kfree(disp_dev->dev[k]); } } return err; @@ -1828,6 +1819,7 @@ static int vpbe_display_remove(struct platform_device *pdev) for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { /* Get the pointer to the layer object */ vpbe_display_layer = disp_dev->dev[i]; + vb2_dma_contig_cleanup_ctx(vpbe_display_layer->alloc_ctx); /* Unregister video device */ video_unregister_device(&vpbe_display_layer->video_dev); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/