[PATCH v2 2/4] media: mt9m111: add media controller support

[Akinobu Mita]

Create a source pad and set the media controller type to the sensor.

Cc: Sakari Ailus <sakari.ai...@linux.intel.com>
Cc: Mauro Carvalho Chehab <mche...@s-opensource.com>
Signed-off-by: Akinobu Mita <akinobu.m...@gmail.com>
---
* Changelog v2
- Fix typo s/meida/media/ in the patch title, noticed by Sakari Ailus

 drivers/media/i2c/mt9m111.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/drivers/media/i2c/mt9m111.c b/drivers/media/i2c/mt9m111.c
index 4fa10df..e1d5032 100644
--- a/drivers/media/i2c/mt9m111.c
+++ b/drivers/media/i2c/mt9m111.c
@@ -215,6 +215,9 @@ struct mt9m111 {
        int power_count;
        const struct mt9m111_datafmt *fmt;
        int lastpage;   /* PageMap cache value */
+#ifdef CONFIG_MEDIA_CONTROLLER
+       struct media_pad pad;
+#endif
 };
 
 /* Find a data format by a pixel code */
@@ -971,6 +974,14 @@ static int mt9m111_probe(struct i2c_client *client,
                goto out_clkput;
        }
 
+#ifdef CONFIG_MEDIA_CONTROLLER
+       mt9m111->pad.flags = MEDIA_PAD_FL_SOURCE;
+       mt9m111->subdev.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+       ret = media_entity_pads_init(&mt9m111->subdev.entity, 1, &mt9m111->pad);
+       if (ret < 0)
+               goto out_hdlfree;
+#endif
+
        /* Second stage probe - when a capture adapter is there */
        mt9m111->rect.left      = MT9M111_MIN_DARK_COLS;
        mt9m111->rect.top       = MT9M111_MIN_DARK_ROWS;
@@ -982,16 +993,20 @@ static int mt9m111_probe(struct i2c_client *client,
 
        ret = mt9m111_video_probe(client);
        if (ret < 0)
-               goto out_hdlfree;
+               goto out_entityclean;
 
        mt9m111->subdev.dev = &client->dev;
        ret = v4l2_async_register_subdev(&mt9m111->subdev);
        if (ret < 0)
-               goto out_hdlfree;
+               goto out_entityclean;
 
        return 0;
 
+out_entityclean:
+#ifdef CONFIG_MEDIA_CONTROLLER
+       media_entity_cleanup(&mt9m111->subdev.entity);
 out_hdlfree:
+#endif
        v4l2_ctrl_handler_free(&mt9m111->hdl);
 out_clkput:
        v4l2_clk_put(mt9m111->clk);
@@ -1004,6 +1019,9 @@ static int mt9m111_remove(struct i2c_client *client)
        struct mt9m111 *mt9m111 = to_mt9m111(client);
 
        v4l2_async_unregister_subdev(&mt9m111->subdev);
+#ifdef CONFIG_MEDIA_CONTROLLER
+       media_entity_cleanup(&mt9m111->subdev.entity);
+#endif
        v4l2_clk_put(mt9m111->clk);
        v4l2_ctrl_handler_free(&mt9m111->hdl);
 
-- 
2.7.4