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[media] v4l2-ioctl: add priority handling support

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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
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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 @@ static int vpfe_s_crop(struct file *file, void *priv,
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);
};