[PATCH v7 28/44] [media] media: use macros to check for V4L2 subdev entities

From: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v7 28/44] [media] media: use macros to check for V4L2 subdev entities
Date: Sun, 23 Aug 2015 20:17:45 +0000	[thread overview]
Message-ID: <dd6ce157dc49ac77fd54145cc25c76fce51a3cdc.1440359643.git.mchehab@osg.samsung.com> (raw)
In-Reply-To: <cover.1440359643.git.mchehab@osg.samsung.com>

Instead of relying on media subtype, use the new macros to detect
if an entity is a subdev or an A/V DMA entity.

Please note that most drivers assume that there's just AV_DMA or
V4L2 subdevs. This is not true anymore, as we've added MC support
for DVB, and there are plans to add support for ALSA and FB/DRM
too.

Ok, on the current pipelines supported by those drivers, just V4L
stuff are there, but, assuming that some day a pipeline that also
works with other subsystems will ever added, it is better to add
explicit checks for the AV_DMA stuff.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/platform/exynos4-is/common.c b/drivers/media/platform/exynos4-is/common.c
index 0eb34ecb8ee4..1f1b9a56e24e 100644
--- a/drivers/media/platform/exynos4-is/common.c
+++ b/drivers/media/platform/exynos4-is/common.c
@@ -22,8 +22,7 @@ struct v4l2_subdev *fimc_find_remote_sensor(struct media_entity *entity)
 	while (pad->flags & MEDIA_PAD_FL_SINK) {
 		/* source pad */
 		pad = media_entity_remote_pad(pad);
-		if (pad = NULL ||
-		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!is_media_entity_v4l2_subdev(pad->entity))
 			break;
 
 		sd = media_entity_to_v4l2_subdev(pad->entity);
diff --git a/drivers/media/platform/exynos4-is/fimc-capture.c b/drivers/media/platform/exynos4-is/fimc-capture.c
index 0627a93b2f3b..79b43b89266a 100644
--- a/drivers/media/platform/exynos4-is/fimc-capture.c
+++ b/drivers/media/platform/exynos4-is/fimc-capture.c
@@ -1141,8 +1141,7 @@ static int fimc_pipeline_validate(struct fimc_dev *fimc)
 			}
 		}
 
-		if (src_pad = NULL ||
-		    media_entity_type(src_pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!is_media_entity_v4l2_subdev(src_pad->entity))
 			break;
 
 		/* Don't call FIMC subdev operation to avoid nested locking */
@@ -1397,7 +1396,7 @@ static int fimc_link_setup(struct media_entity *entity,
 	struct fimc_vid_cap *vc = &fimc->vid_cap;
 	struct v4l2_subdev *sensor;
 
-	if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+	if (!is_media_entity_v4l2_subdev(remote->entity))
 		return -EINVAL;
 
 	if (WARN_ON(fimc = NULL))
diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c b/drivers/media/platform/exynos4-is/fimc-isp-video.c
index 3d9ccbf5f10f..0ea948ad668c 100644
--- a/drivers/media/platform/exynos4-is/fimc-isp-video.c
+++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c
@@ -467,8 +467,7 @@ static int isp_video_pipeline_validate(struct fimc_isp *isp)
 
 		/* Retrieve format at the source pad */
 		pad = media_entity_remote_pad(pad);
-		if (pad = NULL ||
-		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!is_media_entity_v4l2_subdev(pad->entity))
 			break;
 
 		sd = media_entity_to_v4l2_subdev(pad->entity);
diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c
index b2607da4ad14..df2ac6b0afd1 100644
--- a/drivers/media/platform/exynos4-is/fimc-lite.c
+++ b/drivers/media/platform/exynos4-is/fimc-lite.c
@@ -814,8 +814,7 @@ static int fimc_pipeline_validate(struct fimc_lite *fimc)
 		}
 		/* Retrieve format at the source pad */
 		pad = media_entity_remote_pad(pad);
-		if (pad = NULL ||
-		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!is_media_entity_v4l2_subdev(pad->entity))
 			break;
 
 		sd = media_entity_to_v4l2_subdev(pad->entity);
@@ -988,7 +987,6 @@ static int fimc_lite_link_setup(struct media_entity *entity,
 {
 	struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
 	struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
-	unsigned int remote_ent_type = media_entity_type(remote->entity);
 	int ret = 0;
 
 	if (WARN_ON(fimc = NULL))
@@ -1000,7 +998,7 @@ static int fimc_lite_link_setup(struct media_entity *entity,
 
 	switch (local->index) {
 	case FLITE_SD_PAD_SINK:
-		if (remote_ent_type != MEDIA_ENT_T_V4L2_SUBDEV) {
+		if (!is_media_entity_v4l2_subdev(remote->entity)) {
 			ret = -EINVAL;
 			break;
 		}
@@ -1018,7 +1016,7 @@ static int fimc_lite_link_setup(struct media_entity *entity,
 	case FLITE_SD_PAD_SOURCE_DMA:
 		if (!(flags & MEDIA_LNK_FL_ENABLED))
 			atomic_set(&fimc->out_path, FIMC_IO_NONE);
-		else if (remote_ent_type = MEDIA_ENT_T_DEVNODE)
+		else if (is_media_v4l2_io(remote->entity))
 			atomic_set(&fimc->out_path, FIMC_IO_DMA);
 		else
 			ret = -EINVAL;
@@ -1027,7 +1025,7 @@ static int fimc_lite_link_setup(struct media_entity *entity,
 	case FLITE_SD_PAD_SOURCE_ISP:
 		if (!(flags & MEDIA_LNK_FL_ENABLED))
 			atomic_set(&fimc->out_path, FIMC_IO_NONE);
-		else if (remote_ent_type = MEDIA_ENT_T_V4L2_SUBDEV)
+		else if (is_media_entity_v4l2_subdev(remote->entity)))
 			atomic_set(&fimc->out_path, FIMC_IO_ISP);
 		else
 			ret = -EINVAL;
diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c
index 92dbade2fffc..428fead69095 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -88,8 +88,7 @@ static void fimc_pipeline_prepare(struct fimc_pipeline *p,
 				break;
 		}
 
-		if (pad = NULL ||
-		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!is_media_entity_v4l2_subdev(pad->entity))
 			break;
 		sd = media_entity_to_v4l2_subdev(pad->entity);
 
@@ -1062,7 +1061,7 @@ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable)
 	media_entity_graph_walk_start(&graph, entity);
 
 	while ((entity = media_entity_graph_walk_next(&graph))) {
-		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
+		if (!is_media_entity_v4l2_io(entity))
 			continue;
 
 		ret  = __fimc_md_modify_pipeline(entity, enable);
@@ -1076,7 +1075,7 @@ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable)
 	media_entity_graph_walk_start(&graph, entity_err);
 
 	while ((entity_err = media_entity_graph_walk_next(&graph))) {
-		if (media_entity_type(entity_err) != MEDIA_ENT_T_DEVNODE)
+		if (!is_media_entity_v4l2_io(entity_err))
 			continue;
 
 		__fimc_md_modify_pipeline(entity_err, !enable);
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index aa13b17d19a0..fe29e56528ed 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -691,7 +691,7 @@ static int isp_pipeline_pm_use_count(struct media_entity *entity)
 	media_entity_graph_walk_start(&graph, entity);
 
 	while ((entity = media_entity_graph_walk_next(&graph))) {
-		if (media_entity_type(entity) = MEDIA_ENT_T_DEVNODE)
+		if (is_media_entity_v4l2_io(entity))
 			use += entity->use_count;
 	}
 
@@ -714,7 +714,7 @@ static int isp_pipeline_pm_power_one(struct media_entity *entity, int change)
 	struct v4l2_subdev *subdev;
 	int ret;
 
-	subdev = media_entity_type(entity) = MEDIA_ENT_T_V4L2_SUBDEV
+	subdev = is_media_entity_v4l2_subdev(entity))
 	       ? media_entity_to_v4l2_subdev(entity) : NULL;
 
 	if (entity->use_count = 0 && change > 0 && subdev != NULL) {
@@ -754,7 +754,7 @@ static int isp_pipeline_pm_power(struct media_entity *entity, int change)
 	media_entity_graph_walk_start(&graph, entity);
 
 	while (!ret && (entity = media_entity_graph_walk_next(&graph)))
-		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
+		if (is_media_entity_v4l2_subdev(entity))
 			ret = isp_pipeline_pm_power_one(entity, change);
 
 	if (!ret)
@@ -764,7 +764,7 @@ static int isp_pipeline_pm_power(struct media_entity *entity, int change)
 
 	while ((first = media_entity_graph_walk_next(&graph))
 	       && first != entity)
-		if (media_entity_type(first) != MEDIA_ENT_T_DEVNODE)
+		if (is_media_entity_v4l2_subdev(first))
 			isp_pipeline_pm_power_one(first, -change);
 
 	return ret;
@@ -897,8 +897,7 @@ static int isp_pipeline_enable(struct isp_pipeline *pipe,
 			break;
 
 		pad = media_entity_remote_pad(pad);
-		if (pad = NULL ||
-		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!is_media_entity_v4l2_subdev(pad->entity))
 			break;
 
 		entity = pad->entity;
@@ -988,8 +987,7 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe)
 			break;
 
 		pad = media_entity_remote_pad(pad);
-		if (pad = NULL ||
-		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!is_media_entity_v4l2_subdev(pad->entity))
 			break;
 
 		entity = pad->entity;
diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c
index 4c367352b1f7..3518c7d283d0 100644
--- a/drivers/media/platform/omap3isp/ispvideo.c
+++ b/drivers/media/platform/omap3isp/ispvideo.c
@@ -210,8 +210,7 @@ isp_video_remote_subdev(struct isp_video *video, u32 *pad)
 
 	remote = media_entity_remote_pad(&video->pad);
 
-	if (remote = NULL ||
-	    media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+	if (!is_media_entity_v4l2_subdev(remote->entity))
 		return NULL;
 
 	if (pad)
@@ -243,7 +242,7 @@ static int isp_video_get_graph_data(struct isp_video *video,
 		if (entity = &video->video.entity)
 			continue;
 
-		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
+		if (!is_media_entity_v4l2_io(entity))
 			continue;
 
 		__video = to_isp_video(media_entity_to_video_device(entity));
@@ -917,7 +916,7 @@ static int isp_video_check_external_subdevs(struct isp_video *video,
 		return -EINVAL;
 	}
 
-	if (media_entity_type(source) != MEDIA_ENT_T_V4L2_SUBDEV)
+	if (!is_media_entity_v4l2_subdev(source->entity))
 		return 0;
 
 	pipe->external = media_entity_to_v4l2_subdev(source);
diff --git a/drivers/media/platform/s3c-camif/camif-capture.c b/drivers/media/platform/s3c-camif/camif-capture.c
index eae667eab1b9..50f511439e67 100644
--- a/drivers/media/platform/s3c-camif/camif-capture.c
+++ b/drivers/media/platform/s3c-camif/camif-capture.c
@@ -837,7 +837,7 @@ static int camif_pipeline_validate(struct camif_dev *camif)
 
 	/* Retrieve format at the sensor subdev source pad */
 	pad = media_entity_remote_pad(&camif->pads[0]);
-	if (!pad || media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+	if (!is_media_entity_v4l2_subdev(pad->entity))
 		return -EPIPE;
 
 	src_fmt.pad = pad->index;
diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c
index 1f94c1a54e00..8d202f42b318 100644
--- a/drivers/media/platform/vsp1/vsp1_video.c
+++ b/drivers/media/platform/vsp1/vsp1_video.c
@@ -160,8 +160,7 @@ vsp1_video_remote_subdev(struct media_pad *local, u32 *pad)
 	struct media_pad *remote;
 
 	remote = media_entity_remote_pad(local);
-	if (remote = NULL ||
-	    media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+	if (!is_media_entity_v4l2_subdev(remote->entity))
 		return NULL;
 
 	if (pad)
@@ -326,7 +325,7 @@ static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe,
 			return -EPIPE;
 
 		/* We've reached a video node, that shouldn't have happened. */
-		if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!is_media_entity_v4l2_subdev(pad->entity))
 			return -EPIPE;
 
 		entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
@@ -423,7 +422,7 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
 		struct vsp1_rwpf *rwpf;
 		struct vsp1_entity *e;
 
-		if (media_entity_type(entity) != MEDIA_ENT_T_V4L2_SUBDEV) {
+		if (is_media_entity_v4l2_io(entity)) {
 			pipe->num_video++;
 			continue;
 		}
@@ -692,7 +691,7 @@ void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
 	pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]);
 
 	while (pad) {
-		if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!is_media_entity_v4l2_subdev(pad->entity))
 			break;
 
 		entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c
index 88cd789cdaf7..bbbde73c05b8 100644
--- a/drivers/media/platform/xilinx/xilinx-dma.c
+++ b/drivers/media/platform/xilinx/xilinx-dma.c
@@ -49,8 +49,7 @@ xvip_dma_remote_subdev(struct media_pad *local, u32 *pad)
 	struct media_pad *remote;
 
 	remote = media_entity_remote_pad(local);
-	if (remote = NULL ||
-	    media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+	if (!is_media_entity_v4l2_subdev(remote->entity))
 		return NULL;
 
 	if (pad)
@@ -113,8 +112,7 @@ static int xvip_pipeline_start_stop(struct xvip_pipeline *pipe, bool start)
 			break;
 
 		pad = media_entity_remote_pad(pad);
-		if (pad = NULL ||
-		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!is_media_entity_v4l2_subdev(pad->entity))
 			break;
 
 		entity = pad->entity;
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index e6e1115d8215..60da43772de9 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -526,7 +526,7 @@ static int
 v4l2_subdev_link_validate_get_format(struct media_pad *pad,
 				     struct v4l2_subdev_format *fmt)
 {
-	if (media_entity_type(pad->entity) = MEDIA_ENT_T_V4L2_SUBDEV) {
+	if (is_media_entity_v4l2_subdev(pad->entity)) {
 		struct v4l2_subdev *sd  			media_entity_to_v4l2_subdev(pad->entity);
 
diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c
index 92573fa852a9..16763e0831f2 100644
--- a/drivers/staging/media/davinci_vpfe/vpfe_video.c
+++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c
@@ -148,7 +148,7 @@ static void vpfe_prepare_pipeline(struct vpfe_video_device *video)
 	while ((entity = media_entity_graph_walk_next(&graph))) {
 		if (entity = &video->video_dev.entity)
 			continue;
-		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
+		if ((!is_media_entity_v4l2_io(remote->entity))
 			continue;
 		far_end = to_vpfe_video(media_entity_to_video_device(entity));
 		if (far_end->type = V4L2_BUF_TYPE_VIDEO_OUTPUT)
@@ -293,7 +293,7 @@ static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe)
 	media_entity_graph_walk_start(&graph, entity);
 	while ((entity = media_entity_graph_walk_next(&graph))) {
 
-		if (media_entity_type(entity) = MEDIA_ENT_T_DEVNODE)
+		if !is_media_entity_v4l2_subdev(entity))
 			continue;
 		subdev = media_entity_to_v4l2_subdev(entity);
 		ret = v4l2_subdev_call(subdev, video, s_stream, 1);
@@ -334,7 +334,7 @@ static int vpfe_pipeline_disable(struct vpfe_pipeline *pipe)
 
 	while ((entity = media_entity_graph_walk_next(&graph))) {
 
-		if (media_entity_type(entity) = MEDIA_ENT_T_DEVNODE)
+		if (!is_media_entity_v4l2_subdev(entity))
 			continue;
 		subdev = media_entity_to_v4l2_subdev(entity);
 		ret = v4l2_subdev_call(subdev, video, s_stream, 0);
diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c
index 40591963b42b..fc7d329a06bd 100644
--- a/drivers/staging/media/omap4iss/iss.c
+++ b/drivers/staging/media/omap4iss/iss.c
@@ -397,7 +397,7 @@ static int iss_pipeline_pm_use_count(struct media_entity *entity)
 	media_entity_graph_walk_start(&graph, entity);
 
 	while ((entity = media_entity_graph_walk_next(&graph))) {
-		if (media_entity_type(entity) = MEDIA_ENT_T_DEVNODE)
+		if (is_media_entity_v4l2_io(entity))
 			use += entity->use_count;
 	}
 
@@ -419,7 +419,7 @@ static int iss_pipeline_pm_power_one(struct media_entity *entity, int change)
 {
 	struct v4l2_subdev *subdev;
 
-	subdev = media_entity_type(entity) = MEDIA_ENT_T_V4L2_SUBDEV
+	subdev = is_media_entity_v4l2_subdev(entity))
 	       ? media_entity_to_v4l2_subdev(entity) : NULL;
 
 	if (entity->use_count = 0 && change > 0 && subdev != NULL) {
@@ -461,7 +461,7 @@ static int iss_pipeline_pm_power(struct media_entity *entity, int change)
 	media_entity_graph_walk_start(&graph, entity);
 
 	while (!ret && (entity = media_entity_graph_walk_next(&graph)))
-		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
+		if (is_media_entity_v4l2_subdev(entity))
 			ret = iss_pipeline_pm_power_one(entity, change);
 
 	if (!ret)
@@ -471,7 +471,7 @@ static int iss_pipeline_pm_power(struct media_entity *entity, int change)
 
 	while ((first = media_entity_graph_walk_next(&graph))
 	       && first != entity)
-		if (media_entity_type(first) != MEDIA_ENT_T_DEVNODE)
+		if (is_media_entity_v4l2_subdev(first))
 			iss_pipeline_pm_power_one(first, -change);
 
 	return ret;
@@ -590,8 +590,7 @@ static int iss_pipeline_disable(struct iss_pipeline *pipe,
 			break;
 
 		pad = media_entity_remote_pad(pad);
-		if (pad = NULL ||
-		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if !is_media_entity_v4l2_subdev(pad->entity))
 			break;
 
 		entity = pad->entity;
@@ -658,8 +657,7 @@ static int iss_pipeline_enable(struct iss_pipeline *pipe,
 			break;
 
 		pad = media_entity_remote_pad(pad);
-		if (pad = NULL ||
-		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!is_media_entity_v4l2_subdev(pad->entity))
 			break;
 
 		entity = pad->entity;
diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c
index 45a3f2d778fc..9aae72bc24a0 100644
--- a/drivers/staging/media/omap4iss/iss_video.c
+++ b/drivers/staging/media/omap4iss/iss_video.c
@@ -191,8 +191,7 @@ iss_video_remote_subdev(struct iss_video *video, u32 *pad)
 
 	remote = media_entity_remote_pad(&video->pad);
 
-	if (remote = NULL ||
-	    media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+	if ((!is_media_entity_v4l2_subdev(remote->entity))
 		return NULL;
 
 	if (pad)
@@ -217,7 +216,7 @@ iss_video_far_end(struct iss_video *video)
 		if (entity = &video->video.entity)
 			continue;
 
-		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
+		if (!is_media_entity_v4l2_io(entity))
 			continue;
 
 		far_end = to_iss_video(media_entity_to_video_device(entity));
-- 
2.4.3

