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[media] snd_tea575x: Add a cannot_mute flag

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Some devices which use the tea575x tuner chip don't allow direct control
over the IO pins, and thus cannot mute the audio output.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
CC: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans de Goede 2012-05-18 12:21:57 -03:00 committed by Mauro Carvalho Chehab
parent 31a62d4157
commit 3d0fe51cfa
2 changed files with 20 additions and 16 deletions
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1
include/sound/tea575x-tuner.h
View file

@ -53,6 +53,7 @@ struct snd_tea575x {
int radio_nr; /* radio_nr */
bool tea5759; /* 5759 chip is present */
bool cannot_read_data; /* Device cannot read the data pin */
bool cannot_mute; /* Device cannot mute */
bool mute; /* Device is muted? */
bool stereo; /* receiving stereo */
bool tuned; /* tuned to a station */

35
sound/i2c/other/tea575x-tuner.c
View file

@ -385,7 +385,6 @@ int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner)
strlcpy(tea->vd.name, tea->v4l2_dev->name, sizeof(tea->vd.name));
tea->vd.lock = &tea->mutex;
tea->vd.v4l2_dev = tea->v4l2_dev;
tea->vd.ctrl_handler = &tea->ctrl_handler;
tea->fops = tea575x_fops;
tea->fops.owner = owner;
tea->vd.fops = &tea->fops;
@ -394,29 +393,33 @@ int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner)
if (tea->cannot_read_data)
v4l2_disable_ioctl(&tea->vd, VIDIOC_S_HW_FREQ_SEEK);
v4l2_ctrl_handler_init(&tea->ctrl_handler, 1);
v4l2_ctrl_new_std(&tea->ctrl_handler, &tea575x_ctrl_ops, V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
retval = tea->ctrl_handler.error;
if (retval) {
v4l2_err(tea->v4l2_dev, "can't initialize controls\n");
v4l2_ctrl_handler_free(&tea->ctrl_handler);
return retval;
}
if (tea->ext_init) {
retval = tea->ext_init(tea);
if (!tea->cannot_mute) {
tea->vd.ctrl_handler = &tea->ctrl_handler;
v4l2_ctrl_handler_init(&tea->ctrl_handler, 1);
v4l2_ctrl_new_std(&tea->ctrl_handler, &tea575x_ctrl_ops,
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
retval = tea->ctrl_handler.error;
if (retval) {
v4l2_err(tea->v4l2_dev, "can't initialize controls\n");
v4l2_ctrl_handler_free(&tea->ctrl_handler);
return retval;
}
}
v4l2_ctrl_handler_setup(&tea->ctrl_handler);
if (tea->ext_init) {
retval = tea->ext_init(tea);
if (retval) {
v4l2_ctrl_handler_free(&tea->ctrl_handler);
return retval;
}
}
v4l2_ctrl_handler_setup(&tea->ctrl_handler);
}
retval = video_register_device(&tea->vd, VFL_TYPE_RADIO, tea->radio_nr);
if (retval) {
v4l2_err(tea->v4l2_dev, "can't register video device!\n");
v4l2_ctrl_handler_free(&tea->ctrl_handler);
v4l2_ctrl_handler_free(tea->vd.ctrl_handler);
return retval;
}
@ -426,7 +429,7 @@ int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner)
void snd_tea575x_exit(struct snd_tea575x *tea)
{
video_unregister_device(&tea->vd);
v4l2_ctrl_handler_free(&tea->ctrl_handler);
v4l2_ctrl_handler_free(tea->vd.ctrl_handler);
}
static int __init alsa_tea575x_module_init(void)