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Subject: media: ipu6: Rework CSI-2 sub-device streaming control
Author: Sakari Ailus <sakari.ai...@linux.intel.com>
Date: Thu May 30 13:38:07 2024 +0300
CSI-2 sub-device streaming control should use {enable,disable}_streams pad
ops and not s_stream video ops as the sub-device supports streams. Fix
this by removing driver-implemented stream management and moving sensor
streaming control to the CSI-2 sub-device sub-driver.
Fixes: a11a5570a09d ("media: intel/ipu6: add IPU6 CSI2 receiver v4l2
sub-device")
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c | 98 +++++++++++---------------
drivers/media/pci/intel/ipu6/ipu6-isys-csi2.h | 2 -
drivers/media/pci/intel/ipu6/ipu6-isys-queue.c | 3 -
drivers/media/pci/intel/ipu6/ipu6-isys-video.c | 43 ++---------
4 files changed, 49 insertions(+), 97 deletions(-)
---
diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c
b/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c
index b9ce4324996d..051898ce53f4 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c
@@ -345,42 +345,61 @@ static int ipu6_isys_csi2_set_stream(struct v4l2_subdev
*sd,
return ret;
}
-static int set_stream(struct v4l2_subdev *sd, int enable)
+static int ipu6_isys_csi2_enable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ u32 pad, u64 streams_mask)
{
struct ipu6_isys_subdev *asd = to_ipu6_isys_subdev(sd);
struct ipu6_isys_csi2 *csi2 = to_ipu6_isys_csi2(asd);
- struct device *dev = &csi2->isys->adev->auxdev.dev;
struct ipu6_isys_csi2_timing timing = { };
- unsigned int nlanes;
+ struct v4l2_subdev *remote_sd;
+ struct media_pad *remote_pad;
+ u64 sink_streams;
int ret;
- dev_dbg(dev, "csi2 stream %s callback\n", enable ? "on" : "off");
-
- if (!enable) {
- csi2->stream_count--;
- if (csi2->stream_count)
- return 0;
-
- ipu6_isys_csi2_set_stream(sd, &timing, 0, enable);
- return 0;
- }
-
- if (csi2->stream_count) {
- csi2->stream_count++;
- return 0;
- }
+ remote_pad =
media_pad_remote_pad_first(&sd->entity.pads[CSI2_PAD_SINK]);
+ remote_sd = media_entity_to_v4l2_subdev(remote_pad->entity);
- nlanes = csi2->nlanes;
+ sink_streams = v4l2_subdev_state_xlate_streams(state, CSI2_PAD_SRC,
+ CSI2_PAD_SINK,
+ &streams_mask);
ret = ipu6_isys_csi2_calc_timing(csi2, &timing, CSI2_ACCINV);
if (ret)
return ret;
- ret = ipu6_isys_csi2_set_stream(sd, &timing, nlanes, enable);
+ ret = ipu6_isys_csi2_set_stream(sd, &timing, csi2->nlanes, true);
if (ret)
return ret;
- csi2->stream_count++;
+ ret = v4l2_subdev_enable_streams(remote_sd, remote_pad->index,
+ sink_streams);
+ if (ret) {
+ ipu6_isys_csi2_set_stream(sd, NULL, 0, false);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ipu6_isys_csi2_disable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ u32 pad, u64 streams_mask)
+{
+ struct v4l2_subdev *remote_sd;
+ struct media_pad *remote_pad;
+ u64 sink_streams;
+
+ sink_streams = v4l2_subdev_state_xlate_streams(state, CSI2_PAD_SRC,
+ CSI2_PAD_SINK,
+ &streams_mask);
+
+ remote_pad =
media_pad_remote_pad_first(&sd->entity.pads[CSI2_PAD_SINK]);
+ remote_sd = media_entity_to_v4l2_subdev(remote_pad->entity);
+
+ ipu6_isys_csi2_set_stream(sd, NULL, 0, false);
+
+ v4l2_subdev_disable_streams(remote_sd, remote_pad->index, sink_streams);
return 0;
}
@@ -475,10 +494,6 @@ static int ipu6_isys_csi2_get_sel(struct v4l2_subdev *sd,
return ret;
}
-static const struct v4l2_subdev_video_ops csi2_sd_video_ops = {
- .s_stream = set_stream,
-};
-
static const struct v4l2_subdev_pad_ops csi2_sd_pad_ops = {
.get_fmt = v4l2_subdev_get_fmt,
.set_fmt = ipu6_isys_subdev_set_fmt,
@@ -486,11 +501,12 @@ static const struct v4l2_subdev_pad_ops csi2_sd_pad_ops =
{
.set_selection = ipu6_isys_csi2_set_sel,
.enum_mbus_code = ipu6_isys_subdev_enum_mbus_code,
.set_routing = ipu6_isys_subdev_set_routing,
+ .enable_streams = ipu6_isys_csi2_enable_streams,
+ .disable_streams = ipu6_isys_csi2_disable_streams,
};
static const struct v4l2_subdev_ops csi2_sd_ops = {
.core = &csi2_sd_core_ops,
- .video = &csi2_sd_video_ops,
.pad = &csi2_sd_pad_ops,
};
@@ -631,33 +647,3 @@ int ipu6_isys_csi2_get_remote_desc(u32 source_stream,
return 0;
}
-
-void ipu6_isys_set_csi2_streams_status(struct ipu6_isys_video *av, bool status)
-{
- struct ipu6_isys_stream *stream = av->stream;
- struct v4l2_subdev *sd = &stream->asd->sd;
- struct v4l2_subdev_state *state;
- struct media_pad *r_pad;
- unsigned int i;
- u32 r_stream;
-
- r_pad = media_pad_remote_pad_first(&av->pad);
- r_stream = ipu6_isys_get_src_stream_by_src_pad(sd, r_pad->index);
-
- state = v4l2_subdev_lock_and_get_active_state(sd);
-
- for (i = 0; i < state->stream_configs.num_configs; i++) {
- struct v4l2_subdev_stream_config *cfg =
- &state->stream_configs.configs[i];
-
- if (cfg->pad == r_pad->index && r_stream == cfg->stream) {
- dev_dbg(&av->isys->adev->auxdev.dev,
- "%s: pad:%u, stream:%u, status:%u\n",
- sd->entity.name, r_pad->index, r_stream,
- status);
- cfg->enabled = status;
- }
- }
-
- v4l2_subdev_unlock_state(state);
-}
diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.h
b/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.h
index eba6b29386ea..bc8594c94f99 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.h
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.h
@@ -45,7 +45,6 @@ struct ipu6_isys_csi2 {
u32 receiver_errors;
unsigned int nlanes;
unsigned int port;
- unsigned int stream_count;
};
struct ipu6_isys_csi2_timing {
@@ -77,6 +76,5 @@ int ipu6_isys_csi2_get_remote_desc(u32 source_stream,
struct ipu6_isys_csi2 *csi2,
struct media_entity *source_entity,
struct v4l2_mbus_frame_desc_entry *entry);
-void ipu6_isys_set_csi2_streams_status(struct ipu6_isys_video *av, bool
status);
#endif /* IPU6_ISYS_CSI2_H */
diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c
b/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c
index 40a8ebfcfce2..6bea7754875d 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c
@@ -551,7 +551,6 @@ static int start_streaming(struct vb2_queue *q, unsigned
int count)
stream->nr_queues);
list_add(&aq->node, &stream->queues);
- ipu6_isys_set_csi2_streams_status(av, true);
ipu6_isys_configure_stream_watermark(av, true);
ipu6_isys_update_stream_watermark(av, true);
@@ -598,8 +597,6 @@ static void stop_streaming(struct vb2_queue *q)
struct ipu6_isys_video *av = ipu6_isys_queue_to_video(aq);
struct ipu6_isys_stream *stream = av->stream;
- ipu6_isys_set_csi2_streams_status(av, false);
-
mutex_lock(&stream->mutex);
ipu6_isys_update_stream_watermark(av, false);
diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
b/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
index c8a33e1e910c..e41d40243abd 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
@@ -990,9 +990,7 @@ int ipu6_isys_video_set_streaming(struct ipu6_isys_video
*av, int state,
struct v4l2_subdev_state *subdev_state;
struct device *dev = &av->isys->adev->auxdev.dev;
struct v4l2_subdev *sd;
- struct v4l2_subdev *ssd;
struct media_pad *r_pad;
- struct media_pad *s_pad;
u32 sink_pad, sink_stream;
u64 r_stream;
u64 stream_mask = 0;
@@ -1003,7 +1001,6 @@ int ipu6_isys_video_set_streaming(struct ipu6_isys_video
*av, int state,
if (WARN(!stream->source_entity, "No source entity for stream\n"))
return -ENODEV;
- ssd = media_entity_to_v4l2_subdev(stream->source_entity);
sd = &stream->asd->sd;
r_pad = media_pad_remote_pad_first(&av->pad);
r_stream = ipu6_isys_get_src_stream_by_src_pad(sd, r_pad->index);
@@ -1017,27 +1014,15 @@ int ipu6_isys_video_set_streaming(struct
ipu6_isys_video *av, int state,
if (ret)
return ret;
- s_pad = media_pad_remote_pad_first(&stream->asd->pad[sink_pad]);
-
stream_mask = get_stream_mask_by_pipeline(av);
if (!state) {
stop_streaming_firmware(av);
- /* stop external sub-device now. */
- dev_dbg(dev, "disable streams 0x%llx of %s\n", stream_mask,
- ssd->name);
- ret = v4l2_subdev_disable_streams(ssd, s_pad->index,
- stream_mask);
- if (ret) {
- dev_err(dev, "disable streams of %s failed with %d\n",
- ssd->name, ret);
- return ret;
- }
-
/* stop sub-device which connects with video */
- dev_dbg(dev, "stream off entity %s pad:%d\n", sd->name,
- r_pad->index);
- ret = v4l2_subdev_call(sd, video, s_stream, state);
+ dev_dbg(dev, "stream off entity %s pad:%d mask:0x%llx\n",
+ sd->name, r_pad->index, stream_mask);
+ ret = v4l2_subdev_disable_streams(sd, r_pad->index,
+ stream_mask);
if (ret) {
dev_err(dev, "stream off %s failed with %d\n", sd->name,
ret);
@@ -1052,34 +1037,20 @@ int ipu6_isys_video_set_streaming(struct
ipu6_isys_video *av, int state,
}
/* start sub-device which connects with video */
- dev_dbg(dev, "stream on %s pad %d\n", sd->name, r_pad->index);
- ret = v4l2_subdev_call(sd, video, s_stream, state);
+ dev_dbg(dev, "stream on %s pad %d mask 0x%llx\n", sd->name,
+ r_pad->index, stream_mask);
+ ret = v4l2_subdev_enable_streams(sd, r_pad->index, stream_mask);
if (ret) {
dev_err(dev, "stream on %s failed with %d\n", sd->name,
ret);
goto out_media_entity_stop_streaming_firmware;
}
-
- /* start external sub-device now. */
- dev_dbg(dev, "enable streams 0x%llx of %s\n", stream_mask,
- ssd->name);
- ret = v4l2_subdev_enable_streams(ssd, s_pad->index,
- stream_mask);
- if (ret) {
- dev_err(dev,
- "enable streams 0x%llx of %s failed with %d\n",
- stream_mask, stream->source_entity->name, ret);
- goto out_media_entity_stop_streaming;
- }
}
av->streaming = state;
return 0;
-out_media_entity_stop_streaming:
- v4l2_subdev_disable_streams(sd, r_pad->index, BIT(r_stream));
-
out_media_entity_stop_streaming_firmware:
stop_streaming_firmware(av);
