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[media] v4l2-ioctl: add priority handling support 

Drivers that use v4l2_fh can now use the core framework support of g/s_priority.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2011-03-11 19:00:56 -03:00 committed by Mauro Carvalho Chehab
parent dfddb2441f
commit 99cd47bc73
10 changed files with 73 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/media/radio/radio-si4713.c
View File

@ -224,7 +224,8 @@ static int radio_si4713_s_frequency(struct file *file, void *p,
s_frequency, vf);
}
static long radio_si4713_default(struct file *file, void *p, int cmd, void *arg)
static long radio_si4713_default(struct file *file, void *p,
bool valid_prio, int cmd, void *arg)
{
return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core,
ioctl, cmd, arg);

3
drivers/media/video/cpia2/cpia2_v4l.c
View File

@ -395,7 +395,8 @@ static int sync(struct camera_data *cam, int frame_nr)
*
*****************************************************************************/
static long cpia2_default(struct file *file, void *fh, int cmd, void *arg)
static long cpia2_default(struct file *file, void *fh, bool valid_prio,
int cmd, void *arg)
{
struct camera_data *cam = video_drvdata(file);
__u32 gpio_val;

3
drivers/media/video/cx18/cx18-ioctl.c
View File

@ -1057,7 +1057,8 @@ static int cx18_log_status(struct file *file, void *fh)
return 0;
}
static long cx18_default(struct file *file, void *fh, int cmd, void *arg)
static long cx18_default(struct file *file, void *fh, bool valid_prio,
int cmd, void *arg)
{
struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;

2
drivers/media/video/davinci/vpfe_capture.c
View File

@ -1719,7 +1719,7 @@ unlock_out:
static long vpfe_param_handler(struct file *file, void *priv,
int cmd, void *param)
bool valid_prio, int cmd, void *param)
{
struct vpfe_device *vpfe_dev = video_drvdata(file);
int ret = 0;

3
drivers/media/video/ivtv/ivtv-ioctl.c
View File

@ -1795,7 +1795,8 @@ static int ivtv_decoder_ioctls(struct file *filp, unsigned int cmd, void *arg)
return 0;
}
static long ivtv_default(struct file *file, void *fh, int cmd, void *arg)
static long ivtv_default(struct file *file, void *fh, bool valid_prio,
int cmd, void *arg)
{
struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;

3
drivers/media/video/meye.c
View File

@ -1547,7 +1547,8 @@ static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
return 0;
}
static long vidioc_default(struct file *file, void *fh, int cmd, void *arg)
static long vidioc_default(struct file *file, void *fh, bool valid_prio,
int cmd, void *arg)
{
switch (cmd) {
case MEYEIOC_G_PARAMS:

3
drivers/media/video/mxb.c
View File

@ -643,7 +643,8 @@ static int vidioc_s_register(struct file *file, void *fh, struct v4l2_dbg_regist
}
#endif
static long vidioc_default(struct file *file, void *fh, int cmd, void *arg)
static long vidioc_default(struct file *file, void *fh, bool valid_prio,
int cmd, void *arg)
{
struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
struct mxb *mxb = (struct mxb *)dev->ext_priv;

3
drivers/media/video/pwc/pwc-v4l.c
View File

@ -860,7 +860,8 @@ static int pwc_enum_frameintervals(struct file *file, void *fh,
return 0;
}
static long pwc_default(struct file *file, void *fh, int cmd, void *arg)
static long pwc_default(struct file *file, void *fh, bool valid_prio,
int cmd, void *arg)
{
struct pwc_device *pdev = video_drvdata(file);

64
drivers/media/video/v4l2-ioctl.c
View File

@ -24,6 +24,7 @@
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-event.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
#define dbgarg(cmd, fmt, arg...) \
@ -538,6 +539,7 @@ static long __video_do_ioctl(struct file *file,
struct video_device *vfd = video_devdata(file);
const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
void *fh = file->private_data;
struct v4l2_fh *vfh = NULL;
struct v4l2_format f_copy;
long ret = -EINVAL;
@ -553,6 +555,43 @@ static long __video_do_ioctl(struct file *file,
printk(KERN_CONT "\n");
}
if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
vfh = file->private_data;
if (vfh && !ops->vidioc_s_priority) {
switch (cmd) {
case VIDIOC_S_CTRL:
case VIDIOC_S_STD:
case VIDIOC_S_INPUT:
case VIDIOC_S_OUTPUT:
case VIDIOC_S_TUNER:
case VIDIOC_S_FREQUENCY:
case VIDIOC_S_FMT:
case VIDIOC_S_CROP:
case VIDIOC_S_AUDIO:
case VIDIOC_S_AUDOUT:
case VIDIOC_S_EXT_CTRLS:
case VIDIOC_S_FBUF:
case VIDIOC_S_PRIORITY:
case VIDIOC_S_DV_PRESET:
case VIDIOC_S_DV_TIMINGS:
case VIDIOC_S_JPEGCOMP:
case VIDIOC_S_MODULATOR:
case VIDIOC_S_PARM:
case VIDIOC_S_HW_FREQ_SEEK:
case VIDIOC_ENCODER_CMD:
case VIDIOC_OVERLAY:
case VIDIOC_REQBUFS:
case VIDIOC_STREAMON:
case VIDIOC_STREAMOFF:
ret = v4l2_prio_check(vfd->prio, vfh->prio);
if (ret)
goto exit_prio;
ret = -EINVAL;
break;
}
}
switch (cmd) {
/* --- capabilities ------------------------------------------ */
@ -579,9 +618,12 @@ static long __video_do_ioctl(struct file *file,
{
enum v4l2_priority *p = arg;
if (!ops->vidioc_g_priority)
break;
ret = ops->vidioc_g_priority(file, fh, p);
if (ops->vidioc_g_priority) {
ret = ops->vidioc_g_priority(file, fh, p);
} else if (vfh) {
*p = v4l2_prio_max(&vfd->v4l2_dev->prio);
ret = 0;
}
if (!ret)
dbgarg(cmd, "priority is %d\n", *p);
break;
@ -590,10 +632,13 @@ static long __video_do_ioctl(struct file *file,
{
enum v4l2_priority *p = arg;
if (!ops->vidioc_s_priority)
break;
if (!ops->vidioc_s_priority && vfh == NULL)
break;
dbgarg(cmd, "setting priority to %d\n", *p);
ret = ops->vidioc_s_priority(file, fh, *p);
if (ops->vidioc_s_priority)
ret = ops->vidioc_s_priority(file, fh, *p);
else
ret = v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p);
break;
}
@ -2138,13 +2183,18 @@ static long __video_do_ioctl(struct file *file,
}
default:
{
bool valid_prio = true;
if (!ops->vidioc_default)
break;
ret = ops->vidioc_default(file, fh, cmd, arg);
if (vfh && !ops->vidioc_s_priority)
valid_prio = v4l2_prio_check(vfd->prio, vfh->prio) >= 0;
ret = ops->vidioc_default(file, fh, valid_prio, cmd, arg);
break;
}
} /* switch */
exit_prio:
if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
if (ret < 0) {
v4l_print_ioctl(vfd->name, cmd);

2
include/media/v4l2-ioctl.h
View File

@ -270,7 +270,7 @@ struct v4l2_ioctl_ops {
/* For other private ioctls */
long (*vidioc_default) (struct file *file, void *fh,
int cmd, void *arg);
bool valid_prio, int cmd, void *arg);
};