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Date: Sun, 12 Oct 2014 21:40:31 +0100
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To: LMML <linux-media@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
DLOS <davinci-linux-open-source@...ux.davincidsp.com>,
"Lad, Prabhakar" <prabhakar.csengg@...il.com>
Subject: [PATCH 01/15] media: davinci: vpbe: initialize vb2 queue and DMA context in probe
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 <prabhakar.csengg@...il.com>
---
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
--
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