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[media] media: davinci: vpfe: use v4l2_fh for priority handling 

This patch migrates the vpfe driver to use v4l2_fh for
priority handling.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Lad, Prabhakar 2014-03-22 08:39:24 -03:00 committed by Mauro Carvalho Chehab
parent 3d7543b919
commit 3bdaa382b2
2 changed files with 8 additions and 11 deletions
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13
drivers/media/platform/davinci/vpfe_capture.c
View File

@ -498,6 +498,7 @@ static int vpfe_initialize_device(struct vpfe_device *vpfe_dev)
static int vpfe_open(struct file *file)
{
struct vpfe_device *vpfe_dev = video_drvdata(file);
struct video_device *vdev = video_devdata(file);
struct vpfe_fh *fh;
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_open\n");
@ -517,6 +518,7 @@ static int vpfe_open(struct file *file)
/* store pointer to fh in private_data member of file */
file->private_data = fh;
fh->vpfe_dev = vpfe_dev;
v4l2_fh_init(&fh->fh, vdev);
mutex_lock(&vpfe_dev->lock);
/* If decoder is not initialized. initialize it */
if (!vpfe_dev->initialized) {
@ -529,9 +531,7 @@ static int vpfe_open(struct file *file)
vpfe_dev->usrs++;
/* Set io_allowed member to false */
fh->io_allowed = 0;
/* Initialize priority of this instance to default priority */
fh->prio = V4L2_PRIORITY_UNSET;
v4l2_prio_open(&vpfe_dev->prio, &fh->prio);
v4l2_fh_add(&fh->fh);
mutex_unlock(&vpfe_dev->lock);
return 0;
}
@ -740,8 +740,8 @@ static int vpfe_release(struct file *file)
/* Decrement device usrs counter */
vpfe_dev->usrs--;
/* Close the priority */
v4l2_prio_close(&vpfe_dev->prio, fh->prio);
v4l2_fh_del(&fh->fh);
v4l2_fh_exit(&fh->fh);
/* If this is the last file handle */
if (!vpfe_dev->usrs) {
vpfe_dev->initialized = 0;
@ -1910,14 +1910,13 @@ static int vpfe_probe(struct platform_device *pdev)
/* Initialize field of the device objects */
vpfe_dev->numbuffers = config_params.numbuffers;
/* Initialize prio member of device object */
v4l2_prio_init(&vpfe_dev->prio);
/* register video device */
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
"trying to register vpfe device.\n");
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
"video_dev=%x\n", (int)&vpfe_dev->video_dev);
vpfe_dev->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
set_bit(V4L2_FL_USE_FH_PRIO, &vpfe_dev->video_dev->flags);
ret = video_register_device(vpfe_dev->video_dev,
VFL_TYPE_GRABBER, -1);

6
include/media/davinci/vpfe_capture.h
View File

@ -26,6 +26,7 @@
#include <linux/videodev2.h>
#include <linux/clk.h>
#include <linux/i2c.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
#include <media/videobuf-dma-contig.h>
@ -110,8 +111,6 @@ struct vpfe_device {
struct v4l2_device v4l2_dev;
/* parent device */
struct device *pdev;
/* Used to keep track of state of the priority */
struct v4l2_prio_state prio;
/* number of open instances of the channel */
u32 usrs;
/* Indicates id of the field which is being displayed */
@ -174,11 +173,10 @@ struct vpfe_device {
/* File handle structure */
struct vpfe_fh {
struct v4l2_fh fh;
struct vpfe_device *vpfe_dev;
/* Indicates whether this file handle is doing IO */
u8 io_allowed;
/* Used to keep track priority of this instance */
enum v4l2_priority prio;
};
struct vpfe_config_params {