[PATCH 17/19] staging: v4l: omap4iss: Use media entity enum API

From: Sakari Ailus <sakari.ailus@iki.fi>
To: linux-media@vger.kernel.org
Cc: laurent.pinchart@ideasonboard.com, javier@osg.samsung.com,
	mchehab@osg.samsung.com, hverkuil@xs4all.nl,
	Sakari Ailus <sakari.ailus@linux.intel.com>
Subject: [PATCH 17/19] staging: v4l: omap4iss: Use media entity enum API
Date: Tue, 27 Oct 2015 01:01:48 +0200	[thread overview]
Message-ID: <1445900510-1398-18-git-send-email-sakari.ailus@iki.fi> (raw)
In-Reply-To: <1445900510-1398-1-git-send-email-sakari.ailus@iki.fi>

From: Sakari Ailus <sakari.ailus@linux.intel.com>

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/staging/media/omap4iss/iss.c       | 15 +++++++++++----
 drivers/staging/media/omap4iss/iss.h       |  4 ++--
 drivers/staging/media/omap4iss/iss_video.c | 13 +++++++++++--
 drivers/staging/media/omap4iss/iss_video.h |  4 ++--
 4 files changed, 26 insertions(+), 10 deletions(-)

diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c
index c097fd5..7b0561f 100644
--- a/drivers/staging/media/omap4iss/iss.c
+++ b/drivers/staging/media/omap4iss/iss.c
@@ -606,7 +606,7 @@ static int iss_pipeline_disable(struct iss_pipeline *pipe,
 			 * crashed. Mark it as such, the ISS will be reset when
 			 * applications will release it.
 			 */
-			iss->crashed |= 1U << media_entity_id(&subdev->entity);
+			media_entity_enum_set(&iss->crashed, &subdev->entity);
 			failure = -ETIMEDOUT;
 		}
 	}
@@ -641,7 +641,7 @@ static int iss_pipeline_enable(struct iss_pipeline *pipe,
 	 * pipeline won't start anyway (those entities would then likely fail to
 	 * stop, making the problem worse).
 	 */
-	if (pipe->entities & iss->crashed)
+	if (media_entity_enum_intersects(&pipe->entities, &iss->crashed))
 		return -EIO;
 
 	spin_lock_irqsave(&pipe->lock, flags);
@@ -761,7 +761,8 @@ static int iss_reset(struct iss_device *iss)
 		return -ETIMEDOUT;
 	}
 
-	iss->crashed = 0;
+	media_entity_enum_zero(&iss->crashed);
+
 	return 0;
 }
 
@@ -1090,7 +1091,7 @@ void omap4iss_put(struct iss_device *iss)
 		 * be worth investigating whether resetting the ISP only can't
 		 * fix the problem in some cases.
 		 */
-		if (iss->crashed)
+		if (!media_entity_enum_empty(&iss->crashed))
 			iss_reset(iss);
 		iss_disable_clocks(iss);
 	}
@@ -1490,6 +1491,10 @@ static int iss_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto error_modules;
 
+	ret = media_entity_enum_init(&iss->crashed, &iss->media_dev);
+	if (ret)
+		goto error_entities;
+
 	ret = iss_create_pads_links(iss);
 	if (ret < 0)
 		goto error_entities;
@@ -1500,6 +1505,7 @@ static int iss_probe(struct platform_device *pdev)
 
 error_entities:
 	iss_unregister_entities(iss);
+	media_entity_enum_cleanup(&iss->crashed);
 error_modules:
 	iss_cleanup_modules(iss);
 error_iss:
@@ -1517,6 +1523,7 @@ static int iss_remove(struct platform_device *pdev)
 	struct iss_device *iss = platform_get_drvdata(pdev);
 
 	iss_unregister_entities(iss);
+	media_entity_enum_cleanup(&iss->crashed);
 	iss_cleanup_modules(iss);
 
 	return 0;
diff --git a/drivers/staging/media/omap4iss/iss.h b/drivers/staging/media/omap4iss/iss.h
index 35df8b4..5dd0d99 100644
--- a/drivers/staging/media/omap4iss/iss.h
+++ b/drivers/staging/media/omap4iss/iss.h
@@ -82,7 +82,7 @@ struct iss_reg {
 /*
  * struct iss_device - ISS device structure.
  * @syscon: Regmap for the syscon register space
- * @crashed: Bitmask of crashed entities (indexed by entity ID)
+ * @crashed: Crashed entities
  */
 struct iss_device {
 	struct v4l2_device v4l2_dev;
@@ -101,7 +101,7 @@ struct iss_device {
 	u64 raw_dmamask;
 
 	struct mutex iss_mutex;	/* For handling ref_count field */
-	unsigned int crashed;
+	struct media_entity_enum crashed;
 	int has_context;
 	int ref_count;
 
diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c
index cbe5783..b56f999 100644
--- a/drivers/staging/media/omap4iss/iss_video.c
+++ b/drivers/staging/media/omap4iss/iss_video.c
@@ -761,6 +761,10 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
 	if (type != video->type)
 		return -EINVAL;
 
+	ret = media_entity_enum_init(&pipe->entities, entity->graph_obj.mdev);
+	if (ret)
+		return ret;
+
 	mutex_lock(&video->stream_lock);
 
 	/* Start streaming on the pipeline. No link touching an entity in the
@@ -771,7 +775,6 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
 	pipe->external = NULL;
 	pipe->external_rate = 0;
 	pipe->external_bpp = 0;
-	pipe->entities = 0;
 
 	if (video->iss->pdata->set_constraints)
 		video->iss->pdata->set_constraints(video->iss, true);
@@ -783,7 +786,7 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
 	entity = &video->video.entity;
 	media_entity_graph_walk_start(&graph, entity);
 	while ((entity = media_entity_graph_walk_next(&graph)))
-		pipe->entities |= 1 << media_entity_id(entity);
+		media_entity_enum_set(&pipe->entities, entity);
 
 	/* Verify that the currently configured format matches the output of
 	 * the connected subdev.
@@ -854,6 +857,7 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
 	}
 
 	mutex_unlock(&video->stream_lock);
+
 	return 0;
 
 err_omap4iss_set_stream:
@@ -866,6 +870,9 @@ err_media_entity_pipeline_start:
 	video->queue = NULL;
 
 	mutex_unlock(&video->stream_lock);
+
+	media_entity_enum_cleanup(&pipe->entities);
+
 	return ret;
 }
 
@@ -903,6 +910,8 @@ iss_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type)
 	vb2_streamoff(&vfh->queue, type);
 	video->queue = NULL;
 
+	media_entity_enum_cleanup(&pipe->entities);
+
 	if (video->iss->pdata->set_constraints)
 		video->iss->pdata->set_constraints(video->iss, false);
 	media_entity_pipeline_stop(&video->video.entity);
diff --git a/drivers/staging/media/omap4iss/iss_video.h b/drivers/staging/media/omap4iss/iss_video.h
index f11fce2..b5d3a96 100644
--- a/drivers/staging/media/omap4iss/iss_video.h
+++ b/drivers/staging/media/omap4iss/iss_video.h
@@ -77,7 +77,7 @@ enum iss_pipeline_state {
 
 /*
  * struct iss_pipeline - An OMAP4 ISS hardware pipeline
- * @entities: Bitmask of entities in the pipeline (indexed by entity ID)
+ * @entities: Entities in the pipeline
  * @error: A hardware error occurred during capture
  */
 struct iss_pipeline {
@@ -87,7 +87,7 @@ struct iss_pipeline {
 	enum iss_pipeline_stream_state stream_state;
 	struct iss_video *input;
 	struct iss_video *output;
-	unsigned int entities;
+	struct media_entity_enum entities;
 	atomic_t frame_number;
 	bool do_propagation; /* of frame number */
 	bool error;
-- 
2.1.4

