[media] snd_tea575x: Add a cannot_mute flag

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 <[email protected]> CC: Ondrej Zary <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
kishon · Jul 30, 2012 · 3d0fe51 · 3d0fe51
1 parent 31a62d4
commit 3d0fe51
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Showing 2 changed files with 20 additions and 16 deletions.
diff --git a/include/sound/tea575x-tuner.h b/include/sound/tea575x-tuner.h
@@ -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 */

diff --git a/sound/i2c/other/tea575x-tuner.c b/sound/i2c/other/tea575x-tuner.c
@@ -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)