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Message-Id: <1400247235-31434-28-git-send-email-prabhakar.csengg@gmail.com>
Date: Fri, 16 May 2014 19:03:31 +0530
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To: LMML <linux-media@...r.kernel.org>,
Hans Verkuil <hans.verkuil@...co.com>
Cc: DLOS <davinci-linux-open-source@...ux.davincidsp.com>,
LKML <linux-kernel@...r.kernel.org>,
"Lad, Prabhakar" <prabhakar.csengg@...il.com>
Subject: [PATCH v5 26/49] media: davinci: vpif_capture: initalize vb2 queue and DMA context during probe
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
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 <prabhakar.csengg@...il.com>
---
drivers/media/platform/davinci/vpif_capture.c | 110 ++++++++++++-------------
1 file changed, 51 insertions(+), 59 deletions(-)
diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
index d09a27a..b035c88 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]);
--
1.7.9.5
--
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