linux-kernel - [PATCH v4 1/3] media: ov7670: Add entity pads initialization

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Message-ID: <20170918064514.6841-2-wenyou.yang@microchip.com>
Date:   Mon, 18 Sep 2017 14:45:12 +0800
From:   Wenyou Yang <wenyou.yang@...rochip.com>
To:     Jonathan Corbet <corbet@....net>
CC:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        <linux-kernel@...r.kernel.org>, Sakari Ailus <sakari.ailus@....fi>,
        <linux-arm-kernel@...ts.infradead.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        Mauro Carvalho Chehab <mchehab@...pensource.com>,
        Wenyou Yang <wenyou.yang@...rochip.com>
Subject: [PATCH v4 1/3] media: ov7670: Add entity pads initialization

Add the media entity pads initialization.

Signed-off-by: Wenyou Yang <wenyou.yang@...rochip.com>
---

Changes in v4:
 - Fix the build error when not enabling Media Controller API option.

Changes in v3: None
Changes in v2: None

 drivers/media/i2c/ov7670.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/ov7670.c b/drivers/media/i2c/ov7670.c
index e88549f0e704..553945d4ca28 100644
--- a/drivers/media/i2c/ov7670.c
+++ b/drivers/media/i2c/ov7670.c
@@ -213,6 +213,9 @@ struct ov7670_devtype {
 struct ov7670_format_struct;  /* coming later */
 struct ov7670_info {
 	struct v4l2_subdev sd;
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	struct media_pad pad;
+#endif
 	struct v4l2_ctrl_handler hdl;
 	struct {
 		/* gain cluster */
@@ -1688,14 +1691,27 @@ static int ov7670_probe(struct i2c_client *client,
 	v4l2_ctrl_auto_cluster(2, &info->auto_exposure,
 			       V4L2_EXPOSURE_MANUAL, false);
 	v4l2_ctrl_cluster(2, &info->saturation);
+
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	info->pad.flags = MEDIA_PAD_FL_SOURCE;
+	info->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+	ret = media_entity_pads_init(&info->sd.entity, 1, &info->pad);
+	if (ret < 0)
+		goto hdl_free;
+#endif
+
 	v4l2_ctrl_handler_setup(&info->hdl);
 
 	ret = v4l2_async_register_subdev(&info->sd);
 	if (ret < 0)
-		goto hdl_free;
+		goto entity_cleanup;
 
 	return 0;
 
+entity_cleanup:
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	media_entity_cleanup(&info->sd.entity);
+#endif
 hdl_free:
 	v4l2_ctrl_handler_free(&info->hdl);
 clk_disable:
@@ -1712,6 +1728,9 @@ static int ov7670_remove(struct i2c_client *client)
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&info->hdl);
 	clk_disable_unprepare(info->clk);
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	media_entity_cleanup(&info->sd.entity);
+#endif
 	return 0;
 }
 
-- 
2.13.0