[media] msp3400: initialize MC data

Add pads and set the device type when used with the media
controller.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/i2c/msp3400-driver.c

@@ -688,6 +688,9 @@ static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	int msp_revision;
 	int msp_product, msp_prod_hi, msp_prod_lo;
 	int msp_rom;
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	int ret;
+#endif
 
 	if (!id)
 		strlcpy(client->name, "msp3400", sizeof(client->name));
@@ -704,6 +707,17 @@ static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	sd = &state->sd;
 	v4l2_i2c_subdev_init(sd, client, &msp_ops);
 
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	state->pads[IF_AUD_DEC_PAD_IF_INPUT].flags = MEDIA_PAD_FL_SINK;
+	state->pads[IF_AUD_DEC_PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;
+
+	sd->entity.function = MEDIA_ENT_F_IF_AUD_DECODER;
+
+	ret = media_entity_pads_init(&sd->entity, 2, state->pads);
+	if (ret < 0)
+		return ret;
+#endif
+
 	state->v4l2_std = V4L2_STD_NTSC;
 	state->detected_std = V4L2_STD_ALL;
 	state->audmode = V4L2_TUNER_MODE_STEREO;

drivers/media/i2c/msp3400-driver.h

@@ -7,6 +7,7 @@
 #include <media/drv-intf/msp3400.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-ctrls.h>
+#include <media/v4l2-mc.h>
 
 /* ---------------------------------------------------------------------- */
 
@@ -102,6 +103,10 @@ struct msp_state {
 	wait_queue_head_t    wq;
 	unsigned int         restart:1;
 	unsigned int         watch_stereo:1;
+
+#if CONFIG_MEDIA_CONTROLLER
+	struct media_pad pads[IF_AUD_DEC_PAD_NUM_PADS];
+#endif
 };
 
 static inline struct msp_state *to_state(struct v4l2_subdev *sd)