Use runtime PM autosuspend to avoid powering off the sensor during
fast stop-reconfigure-restart cycles.
Signed-off-by: Mikhail Rudenko <mike.rudenko@xxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/media/i2c/ov4689.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/media/i2c/ov4689.c b/drivers/media/i2c/ov4689.c
index 0e0e694510aa..2354397ab34c 100644
--- a/drivers/media/i2c/ov4689.c
+++ b/drivers/media/i2c/ov4689.c
@@ -426,7 +426,8 @@ static int ov4689_s_stream(struct v4l2_subdev *sd, int on)
} else {
cci_write(ov4689->regmap, OV4689_REG_CTRL_MODE,
OV4689_MODE_SW_STANDBY, NULL);
- pm_runtime_put(dev);
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
}
unlock_and_return:
@@ -606,7 +607,8 @@ static int ov4689_set_ctrl(struct v4l2_ctrl *ctrl)
break;
}
- pm_runtime_put(dev);
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
return ret;
}
@@ -876,8 +878,10 @@ static int ov4689_probe(struct i2c_client *client)
}
pm_runtime_set_active(dev);
+ pm_runtime_get_noresume(dev);
pm_runtime_enable(dev);
- pm_runtime_idle(dev);
+ pm_runtime_set_autosuspend_delay(dev, 1000);
+ pm_runtime_use_autosuspend(dev);
ret = v4l2_async_register_subdev_sensor(sd);
if (ret) {
@@ -885,11 +889,14 @@ static int ov4689_probe(struct i2c_client *client)
goto err_clean_subdev_pm;
}
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+
return 0;
err_clean_subdev_pm:
pm_runtime_disable(dev);
- pm_runtime_set_suspended(dev);
+ pm_runtime_put_noidle(dev);
v4l2_subdev_cleanup(sd);
err_clean_entity:
media_entity_cleanup(&sd->entity);
--
2.44.0
