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[media] radio-miropcm20: convert to the control framework 

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2013-01-30 05:50:28 -03:00 committed by Mauro Carvalho Chehab
parent 1a64b63481
commit 7f51a61083
1 changed files with 27 additions and 39 deletions
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66
drivers/media/radio/radio-miropcm20.c
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@ -17,6 +17,7 @@
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#include <sound/aci.h>
static int radio_nr = -1;
@ -30,6 +31,7 @@ MODULE_PARM_DESC(mono, "Force tuner into mono mode.");
struct pcm20 {
struct v4l2_device v4l2_dev;
struct video_device vdev;
struct v4l2_ctrl_handler ctrl_handler;
unsigned long freq;
int muted;
struct snd_miro_aci *aci;
@ -138,61 +140,35 @@ static int vidioc_s_frequency(struct file *file, void *priv,
return 0;
}
static int vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *qc)
static int pcm20_s_ctrl(struct v4l2_ctrl *ctrl)
{
switch (qc->id) {
struct pcm20 *dev = container_of(ctrl->handler, struct pcm20, ctrl_handler);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
pcm20_mute(dev, ctrl->val);
return 0;
}
return -EINVAL;
}
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
struct pcm20 *dev = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
ctrl->value = dev->muted;
break;
default:
return -EINVAL;
}
return 0;
}
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
struct pcm20 *dev = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
pcm20_mute(dev, ctrl->value);
break;
default:
return -EINVAL;
}
return 0;
}
static const struct v4l2_ioctl_ops pcm20_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_g_tuner = vidioc_g_tuner,
.vidioc_s_tuner = vidioc_s_tuner,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_s_frequency = vidioc_s_frequency,
.vidioc_queryctrl = vidioc_queryctrl,
.vidioc_g_ctrl = vidioc_g_ctrl,
.vidioc_s_ctrl = vidioc_s_ctrl,
};
static const struct v4l2_ctrl_ops pcm20_ctrl_ops = {
.s_ctrl = pcm20_s_ctrl,
};
static int __init pcm20_init(void)
{
struct pcm20 *dev = &pcm20_card;
struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
struct v4l2_ctrl_handler *hdl;
int res;
dev->aci = snd_aci_get_aci();
@ -210,6 +186,16 @@ static int __init pcm20_init(void)
return -EINVAL;
}
hdl = &dev->ctrl_handler;
v4l2_ctrl_handler_init(hdl, 1);
v4l2_ctrl_new_std(hdl, &pcm20_ctrl_ops,
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
v4l2_dev->ctrl_handler = hdl;
if (hdl->error) {
res = hdl->error;
v4l2_err(v4l2_dev, "Could not register control\n");
goto err_hdl;
}
strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
dev->vdev.v4l2_dev = v4l2_dev;
dev->vdev.fops = &pcm20_fops;
@ -219,11 +205,12 @@ static int __init pcm20_init(void)
video_set_drvdata(&dev->vdev, dev);
if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0)
goto fail;
goto err_hdl;
v4l2_info(v4l2_dev, "Mirosound PCM20 Radio tuner\n");
return 0;
fail:
err_hdl:
v4l2_ctrl_handler_free(hdl);
v4l2_device_unregister(v4l2_dev);
return -EINVAL;
}
@ -237,6 +224,7 @@ static void __exit pcm20_cleanup(void)
struct pcm20 *dev = &pcm20_card;
video_unregister_device(&dev->vdev);
v4l2_ctrl_handler_free(&dev->ctrl_handler);
v4l2_device_unregister(&dev->v4l2_dev);
}