From: Jacopo Mondi <jacopo+renesas@jmondi.org>
To: sakari.ailus@linux.intel.com, laurent.pinchart@ideasonboard.com,
niklas.soderlund+renesas@ragnatech.se
Cc: Jacopo Mondi <jacopo+renesas@jmondi.org>,
linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org
Subject: [PATCH v3 04/31] v4l: mc: Start walk from a specific pad in use count calculation
Date: Tue, 5 Mar 2019 19:51:23 +0100 [thread overview]
Message-ID: <20190305185150.20776-5-jacopo+renesas@jmondi.org> (raw)
In-Reply-To: <20190305185150.20776-1-jacopo+renesas@jmondi.org>
From: Sakari Ailus <sakari.ailus@linux.intel.com>
With the addition of the recent has_route() media entity op, the pads of a
media entity are no longer all interconnected. This has to be taken into
account in power management.
Prepare for the addition of a helper function supporting S_ROUTING.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
drivers/media/v4l2-core/v4l2-mc.c | 25 ++++++++++++-------------
1 file changed, 12 insertions(+), 13 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-mc.c b/drivers/media/v4l2-core/v4l2-mc.c
index 98edd47b2f0a..558dec225838 100644
--- a/drivers/media/v4l2-core/v4l2-mc.c
+++ b/drivers/media/v4l2-core/v4l2-mc.c
@@ -332,17 +332,16 @@ EXPORT_SYMBOL_GPL(v4l_vb2q_enable_media_source);
/*
* pipeline_pm_use_count - Count the number of users of a pipeline
- * @entity: The entity
+ * @pad: Any pad along the pipeline
*
* Return the total number of users of all video device nodes in the pipeline.
*/
-static int pipeline_pm_use_count(struct media_entity *entity,
- struct media_graph *graph)
+static int pipeline_pm_use_count(struct media_pad *pad,
+ struct media_graph *graph)
{
- struct media_pad *pad;
int use = 0;
- media_graph_walk_start(graph, entity->pads);
+ media_graph_walk_start(graph, pad);
while ((pad = media_graph_walk_next(graph))) {
if (is_media_entity_v4l2_video_device(pad->entity))
@@ -388,7 +387,7 @@ static int pipeline_pm_power_one(struct media_entity *entity, int change)
/*
* pipeline_pm_power - Apply power change to all entities in a pipeline
- * @entity: The entity
+ * @pad: Any pad along the pipeline
* @change: Use count change
*
* Walk the pipeline to update the use count and the power state of all non-node
@@ -396,16 +395,16 @@ static int pipeline_pm_power_one(struct media_entity *entity, int change)
*
* Return 0 on success or a negative error code on failure.
*/
-static int pipeline_pm_power(struct media_entity *entity, int change,
+static int pipeline_pm_power(struct media_pad *pad, int change,
struct media_graph *graph)
{
- struct media_pad *tmp_pad, *pad;
+ struct media_pad *tmp_pad, *first = pad;
int ret = 0;
if (!change)
return 0;
- media_graph_walk_start(graph, entity->pads);
+ media_graph_walk_start(graph, pad);
while (!ret && (pad = media_graph_walk_next(graph)))
if (is_media_entity_v4l2_subdev(pad->entity))
@@ -414,7 +413,7 @@ static int pipeline_pm_power(struct media_entity *entity, int change,
if (!ret)
return ret;
- media_graph_walk_start(graph, entity->pads);
+ media_graph_walk_start(graph, first);
while ((tmp_pad = media_graph_walk_next(graph))
&& tmp_pad != pad)
@@ -437,7 +436,7 @@ int v4l2_pipeline_pm_use(struct media_entity *entity, int use)
WARN_ON(entity->use_count < 0);
/* Apply power change to connected non-nodes. */
- ret = pipeline_pm_power(entity, change, &mdev->pm_count_walk);
+ ret = pipeline_pm_power(entity->pads, change, &mdev->pm_count_walk);
if (ret < 0)
entity->use_count -= change;
@@ -451,8 +450,8 @@ int v4l2_pipeline_link_notify(struct media_link *link, u32 flags,
unsigned int notification)
{
struct media_graph *graph = &link->graph_obj.mdev->pm_count_walk;
- struct media_entity *source = link->source->entity;
- struct media_entity *sink = link->sink->entity;
+ struct media_pad *source = link->source;
+ struct media_pad *sink = link->sink;
int source_use;
int sink_use;
int ret = 0;
--
2.20.1
next prev parent reply other threads:[~2019-03-05 18:51 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-05 18:51 [PATCH v3 00/31] v4l: add support for multiplexed streams Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 01/31] media: entity: Use pad as a starting point for graph walk Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 02/31] media: entity: Use pads instead of entities in the media graph walk stack Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 03/31] media: entity: Walk the graph based on pads Jacopo Mondi
2019-03-05 18:51 ` Jacopo Mondi [this message]
2019-03-05 18:51 ` [PATCH v3 05/31] media: entity: Add iterator helper for entity pads Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 06/31] media: entity: Move the pipeline from entity to pads Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 07/31] media: entity: Use pad as the starting point for a pipeline Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 08/31] media: entity: Add has_route entity operation Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 09/31] media: entity: Add media_has_route() function Jacopo Mondi
2019-03-14 14:45 ` Luca Ceresoli
2019-03-15 9:22 ` Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 10/31] media: entity: Use routing information during graph traversal Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 11/31] media: entity: Skip link validation for pads to which there is no route to Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 12/31] media: entity: Add an iterator helper for connected pads Jacopo Mondi
2019-03-07 10:09 ` Sakari Ailus
2019-03-07 10:27 ` Ian Arkver
2019-03-07 12:38 ` Sakari Ailus
2019-03-07 20:18 ` Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 13/31] media: entity: Add only connected pads to the pipeline Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 14/31] media: entity: Add debug information in graph walk route check Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 15/31] v4l: Add bus type to frame descriptors Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 16/31] v4l: Add CSI-2 bus configuration " Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 17/31] v4l: Add stream to frame descriptor Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 18/31] v4l: subdev: Add [GS]_ROUTING subdev ioctls and operations Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 19/31] media: Documentation: Add GS_ROUTING documentation Jacopo Mondi
2019-03-07 15:19 ` Sakari Ailus
2019-03-08 13:31 ` Jacopo Mondi
2019-03-08 14:14 ` Sakari Ailus
2019-03-14 14:44 ` Luca Ceresoli
2019-03-14 14:43 ` Luca Ceresoli
2020-02-13 13:36 ` Hans Verkuil
2019-03-05 18:51 ` [PATCH v3 20/31] v4l: subdev: Take routing information into account in link validation Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 21/31] v4l: subdev: Improve link format validation debug messages Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 22/31] v4l: mc: Add an S_ROUTING helper function for power state changes Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 23/31] adv748x: csi2: add translation from pixelcode to CSI-2 datatype Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 24/31] adv748x: csi2: only allow formats on sink pads Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 25/31] adv748x: csi2: describe the multiplexed stream Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 26/31] adv748x: csi2: add internal routing configuration Jacopo Mondi
2019-03-14 14:45 ` Luca Ceresoli
2019-03-15 9:45 ` Jacopo Mondi
2019-03-15 10:06 ` Sakari Ailus
2019-03-16 10:23 ` Luca Ceresoli
2019-03-20 17:14 ` Jacopo Mondi
2019-03-22 16:52 ` Luca Ceresoli
2019-03-28 15:08 ` Jacopo Mondi
2019-03-28 15:17 ` Luca Ceresoli
2019-03-05 18:51 ` [PATCH v3 27/31] adv748x: afe: add routing support Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 28/31] adv748x: afe: Implement has_route() Jacopo Mondi
2019-03-07 12:49 ` Sakari Ailus
2019-03-14 14:45 ` Luca Ceresoli
2019-03-05 18:51 ` [PATCH v3 29/31] rcar-csi2: use frame description information to configure CSI-2 bus Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 30/31] rcar-csi2: expose the subdevice internal routing Jacopo Mondi
2019-03-05 18:51 ` [PATCH v3 31/31] media: rcar-csi2: Implement has_route() Jacopo Mondi
2019-03-07 12:56 ` Sakari Ailus
2019-03-07 22:28 ` Jacopo Mondi
2019-03-07 9:47 ` [PATCH v3 00/31] v4l: add support for multiplexed streams Sakari Ailus
2019-03-08 13:19 ` Jacopo Mondi
2019-03-08 14:12 ` Sakari Ailus
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