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[v2,27/66] media: sun6i-csi: Add media ops with link notify callback

Message ID 20220205185429.2278860-28-paul.kocialkowski@bootlin.com
State Accepted
Commit b11d91321cacf638cbfbbb424f9267d4146872a9
Headers show
Series Allwinner A31/A83T MIPI CSI-2 Support and A31 ISP Support | expand

Commit Message

Paul Kocialkowski Feb. 5, 2022, 6:53 p.m. UTC 
In order to keep the power use count fields balanced when link changes
happen between v4l2_pipeline_pm_get/set calls (in open/close),
the link_notify media operation callback needs to be registered.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
---
 drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
index 6f04f86504bf..c8fe31cc38b5 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
@@ -23,6 +23,7 @@ 
 #include <linux/sched.h>
 #include <linux/sizes.h>
 #include <linux/slab.h>
+#include <media/v4l2-mc.h>
 
 #include "sun6i_csi.h"
 #include "sun6i_csi_reg.h"
@@ -574,6 +575,12 @@  void sun6i_csi_set_stream(struct sun6i_csi_device *csi_dev, bool enable)
 			   CSI_CAP_CH0_VCAP_ON);
 }
 
+/* Media */
+
+static const struct media_device_ops sun6i_csi_media_ops = {
+	.link_notify = v4l2_pipeline_link_notify,
+};
+
 /* V4L2 */
 
 static int sun6i_csi_link_entity(struct sun6i_csi_device *csi_dev,
@@ -683,6 +690,7 @@  static int sun6i_csi_v4l2_setup(struct sun6i_csi_device *csi_dev)
 	snprintf(media_dev->bus_info, sizeof(media_dev->bus_info),
 		 "platform:%s", dev_name(dev));
 	media_dev->hw_revision = 0;
+	media_dev->ops = &sun6i_csi_media_ops;
 	media_dev->dev = dev;
 
 	media_device_init(media_dev);