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[media] cx23885: add generic functions for dealing with audio input selection 

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Steven Toth 2011-10-10 11:09:56 -03:00 committed by Mauro Carvalho Chehab
parent e92bcf8d8a
commit fc1a889df7
2 changed files with 82 additions and 0 deletions
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81
drivers/media/video/cx23885/cx23885-video.c
View File

@ -517,6 +517,22 @@ static int cx23885_video_mux(struct cx23885_dev *dev, unsigned int input)
return 0;
}
static int cx23885_audio_mux(struct cx23885_dev *dev, unsigned int input)
{
dprintk(1, "%s(input=%d)\n", __func__, input);
if ((dev->board == CX23885_BOARD_HAUPPAUGE_HVR1800) ||
(dev->board == CX23885_BOARD_MPX885)) {
if (INPUT(input)->amux == CX25840_AUDIO7)
cx23885_flatiron_mux(dev, 1);
else if (INPUT(input)->amux == CX25840_AUDIO6)
cx23885_flatiron_mux(dev, 2);
}
return 0;
}
/* ------------------------------------------------------------------ */
static int cx23885_set_scale(struct cx23885_dev *dev, unsigned int width,
unsigned int height, enum v4l2_field field)
@ -1308,6 +1324,68 @@ static int vidioc_log_status(struct file *file, void *priv)
return 0;
}
static int cx23885_query_audinput(struct file *file, void *priv,
struct v4l2_audio *i)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
static const char *iname[] = {
[0] = "Baseband L/R 1",
[1] = "Baseband L/R 2",
};
unsigned int n;
dprintk(1, "%s()\n", __func__);
n = i->index;
if (n >= 2)
return -EINVAL;
memset(i, 0, sizeof(*i));
i->index = n;
strcpy(i->name, iname[n]);
i->capability = V4L2_AUDCAP_STEREO;
i->mode = V4L2_AUDMODE_AVL;
return 0;
}
static int vidioc_enum_audinput(struct file *file, void *priv,
struct v4l2_audio *i)
{
return cx23885_query_audinput(file, priv, i);
}
static int vidioc_g_audinput(struct file *file, void *priv,
struct v4l2_audio *i)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
i->index = dev->audinput;
dprintk(1, "%s(input=%d)\n", __func__, i->index);
return cx23885_query_audinput(file, priv, i);
}
static int vidioc_s_audinput(struct file *file, void *priv,
struct v4l2_audio *i)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
/* cx23885 offers 2 different audio inputs on the A/V core, LR1 and LR2.
* By default the driver has always used LR1 and we need support for
* switching. This isn't board specific, is part of the base silicon.
*/
if (i->index >= 2)
return -EINVAL;
dprintk(1, "%s(%d)\n", __func__, i->index);
mutex_lock(&dev->lock);
dev->audinput = i->index;
cx23885_audio_mux(dev, dev->audinput);
mutex_unlock(&dev->lock);
return 0;
}
static int vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *qctrl)
{
@ -1548,6 +1626,9 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_g_register = cx23885_g_register,
.vidioc_s_register = cx23885_s_register,
#endif
.vidioc_enumaudio = vidioc_enum_audinput,
.vidioc_g_audio = vidioc_g_audinput,
.vidioc_s_audio = vidioc_s_audinput,
};
static struct video_device cx23885_vbi_template;

1
drivers/media/video/cx23885/cx23885.h
View File

@ -392,6 +392,7 @@ struct cx23885_dev {
/* Analog video */
u32 resources;
unsigned int input;
unsigned int audinput; /* Selectable audio input */
u32 tvaudio;
v4l2_std_id tvnorm;
unsigned int tuner_type;