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Message-ID: <20241008-csi_dcmipp_mp25-v1-5-e3fd0ed54b31@foss.st.com>
Date: Tue, 8 Oct 2024 13:18:07 +0200
From: Alain Volmat <alain.volmat@...s.st.com>
To: Hugues Fruchet <hugues.fruchet@...s.st.com>,
Mauro Carvalho Chehab
<mchehab@...nel.org>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre
Torgue <alexandre.torgue@...s.st.com>,
Hans Verkuil
<hverkuil-cisco@...all.nl>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Rob
Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor
Dooley <conor+dt@...nel.org>,
Philipp Zabel <p.zabel@...gutronix.de>
CC: <linux-media@...r.kernel.org>, <linux-stm32@...md-mailman.stormreply.com>,
<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
<devicetree@...r.kernel.org>, Alain Volmat <alain.volmat@...s.st.com>
Subject: [PATCH 05/15] media: stm32: dcmipp: replace s_stream with
enable/disable_streams
Replace s_stream ops with enable_streams and disable_streams.
At the same time, use v4l2_subdev_enable_streams and
v4l2_subdev_disable_streams functions instead of
direct s_stream calls.
Signed-off-by: Alain Volmat <alain.volmat@...s.st.com>
---
.../st/stm32/stm32-dcmipp/dcmipp-bytecap.c | 49 ++++------
.../st/stm32/stm32-dcmipp/dcmipp-byteproc.c | 98 +++++++++++--------
.../st/stm32/stm32-dcmipp/dcmipp-parallel.c | 107 ++++++++++++---------
3 files changed, 139 insertions(+), 115 deletions(-)
diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c
index 0f6918f4db38..48596592bfd5 100644
--- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c
+++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c
@@ -112,6 +112,7 @@ struct dcmipp_bytecap_device {
u32 sequence;
struct media_pipeline pipe;
struct v4l2_subdev *s_subdev;
+ u32 s_subdev_pad_nb;
enum dcmipp_state state;
@@ -337,33 +338,6 @@ static const struct v4l2_ioctl_ops dcmipp_bytecap_ioctl_ops = {
.vidioc_streamoff = vb2_ioctl_streamoff,
};
-static int dcmipp_pipeline_s_stream(struct dcmipp_bytecap_device *vcap,
- int state)
-{
- struct media_pad *pad;
- int ret;
-
- /*
- * Get source subdev - since link is IMMUTABLE, pointer is cached
- * within the dcmipp_bytecap_device structure
- */
- if (!vcap->s_subdev) {
- pad = media_pad_remote_pad_first(&vcap->vdev.entity.pads[0]);
- if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
- return -EINVAL;
- vcap->s_subdev = media_entity_to_v4l2_subdev(pad->entity);
- }
-
- ret = v4l2_subdev_call(vcap->s_subdev, video, s_stream, state);
- if (ret < 0) {
- dev_err(vcap->dev, "failed to %s streaming (%d)\n",
- state ? "start" : "stop", ret);
- return ret;
- }
-
- return 0;
-}
-
static void dcmipp_start_capture(struct dcmipp_bytecap_device *vcap,
struct dcmipp_buf *buf)
{
@@ -395,11 +369,24 @@ static int dcmipp_bytecap_start_streaming(struct vb2_queue *vq,
struct dcmipp_bytecap_device *vcap = vb2_get_drv_priv(vq);
struct media_entity *entity = &vcap->vdev.entity;
struct dcmipp_buf *buf;
+ struct media_pad *pad;
int ret;
vcap->sequence = 0;
memset(&vcap->count, 0, sizeof(vcap->count));
+ /*
+ * Get source subdev - since link is IMMUTABLE, pointer is cached
+ * within the dcmipp_bytecap_device structure
+ */
+ if (!vcap->s_subdev) {
+ pad = media_pad_remote_pad_first(&vcap->vdev.entity.pads[0]);
+ if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
+ return -EINVAL;
+ vcap->s_subdev = media_entity_to_v4l2_subdev(pad->entity);
+ vcap->s_subdev_pad_nb = pad->index;
+ }
+
ret = pm_runtime_resume_and_get(vcap->dev);
if (ret < 0) {
dev_err(vcap->dev, "%s: Failed to start streaming, cannot get sync (%d)\n",
@@ -414,7 +401,8 @@ static int dcmipp_bytecap_start_streaming(struct vb2_queue *vq,
goto err_pm_put;
}
- ret = dcmipp_pipeline_s_stream(vcap, 1);
+ ret = v4l2_subdev_enable_streams(vcap->s_subdev,
+ vcap->s_subdev_pad_nb, BIT_ULL(0));
if (ret)
goto err_media_pipeline_stop;
@@ -482,7 +470,10 @@ static void dcmipp_bytecap_stop_streaming(struct vb2_queue *vq)
int ret;
u32 status;
- dcmipp_pipeline_s_stream(vcap, 0);
+ ret = v4l2_subdev_disable_streams(vcap->s_subdev,
+ vcap->s_subdev_pad_nb, BIT_ULL(0));
+ if (ret)
+ dev_warn(vcap->dev, "Failed to disable stream\n");
/* Stop the media pipeline */
media_pipeline_stop(vcap->vdev.entity.pads);
diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-byteproc.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-byteproc.c
index 50500112eab9..a19c8235af56 100644
--- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-byteproc.c
+++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-byteproc.c
@@ -380,30 +380,19 @@ static int dcmipp_byteproc_set_selection(struct v4l2_subdev *sd,
return 0;
}
-static const struct v4l2_subdev_pad_ops dcmipp_byteproc_pad_ops = {
- .enum_mbus_code = dcmipp_byteproc_enum_mbus_code,
- .enum_frame_size = dcmipp_byteproc_enum_frame_size,
- .get_fmt = v4l2_subdev_get_fmt,
- .set_fmt = dcmipp_byteproc_set_fmt,
- .get_selection = dcmipp_byteproc_get_selection,
- .set_selection = dcmipp_byteproc_set_selection,
-};
-
static int dcmipp_byteproc_configure_scale_crop
- (struct dcmipp_byteproc_device *byteproc)
+ (struct dcmipp_byteproc_device *byteproc,
+ struct v4l2_subdev_state *state)
{
const struct dcmipp_byteproc_pix_map *vpix;
- struct v4l2_subdev_state *state;
struct v4l2_mbus_framefmt *sink_fmt;
u32 hprediv, vprediv;
struct v4l2_rect *compose, *crop;
u32 val = 0;
- state = v4l2_subdev_lock_and_get_active_state(&byteproc->sd);
sink_fmt = v4l2_subdev_state_get_format(state, 0);
compose = v4l2_subdev_state_get_compose(state, 0);
crop = v4l2_subdev_state_get_crop(state, 1);
- v4l2_subdev_unlock_state(state);
/* find output format bpp */
vpix = dcmipp_byteproc_pix_map_by_code(sink_fmt->code);
@@ -458,46 +447,73 @@ static int dcmipp_byteproc_configure_scale_crop
return 0;
}
-static int dcmipp_byteproc_s_stream(struct v4l2_subdev *sd, int enable)
+static int dcmipp_byteproc_enable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ u32 pad, u64 streams_mask)
{
struct dcmipp_byteproc_device *byteproc = v4l2_get_subdevdata(sd);
struct v4l2_subdev *s_subdev;
- struct media_pad *pad;
- int ret = 0;
+ struct media_pad *s_pad;
+ int ret;
/* Get source subdev */
- pad = media_pad_remote_pad_first(&sd->entity.pads[0]);
- if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
+ s_pad = media_pad_remote_pad_first(&sd->entity.pads[0]);
+ if (!s_pad || !is_media_entity_v4l2_subdev(s_pad->entity))
return -EINVAL;
- s_subdev = media_entity_to_v4l2_subdev(pad->entity);
-
- if (enable) {
- ret = dcmipp_byteproc_configure_scale_crop(byteproc);
- if (ret)
- return ret;
-
- ret = v4l2_subdev_call(s_subdev, video, s_stream, enable);
- if (ret < 0) {
- dev_err(byteproc->dev,
- "failed to start source subdev streaming (%d)\n",
- ret);
- return ret;
- }
- } else {
- ret = v4l2_subdev_call(s_subdev, video, s_stream, enable);
- if (ret < 0) {
- dev_err(byteproc->dev,
- "failed to stop source subdev streaming (%d)\n",
- ret);
- return ret;
- }
+ s_subdev = media_entity_to_v4l2_subdev(s_pad->entity);
+
+ ret = dcmipp_byteproc_configure_scale_crop(byteproc, state);
+ if (ret)
+ return ret;
+
+ ret = v4l2_subdev_enable_streams(s_subdev, s_pad->index, BIT_ULL(0));
+ if (ret < 0) {
+ dev_err(byteproc->dev,
+ "failed to start source subdev streaming (%d)\n", ret);
+ return ret;
}
return 0;
}
+static int dcmipp_byteproc_disable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ u32 pad, u64 streams_mask)
+{
+ struct dcmipp_byteproc_device *byteproc = v4l2_get_subdevdata(sd);
+ struct v4l2_subdev *s_subdev;
+ struct media_pad *s_pad;
+ int ret;
+
+ /* Get source subdev */
+ s_pad = media_pad_remote_pad_first(&sd->entity.pads[0]);
+ if (!s_pad || !is_media_entity_v4l2_subdev(s_pad->entity))
+ return -EINVAL;
+ s_subdev = media_entity_to_v4l2_subdev(s_pad->entity);
+
+ ret = v4l2_subdev_disable_streams(s_subdev, s_pad->index, BIT_ULL(0));
+ if (ret < 0) {
+ dev_err(byteproc->dev,
+ "failed to start source subdev streaming (%d)\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_subdev_pad_ops dcmipp_byteproc_pad_ops = {
+ .enum_mbus_code = dcmipp_byteproc_enum_mbus_code,
+ .enum_frame_size = dcmipp_byteproc_enum_frame_size,
+ .get_fmt = v4l2_subdev_get_fmt,
+ .set_fmt = dcmipp_byteproc_set_fmt,
+ .get_selection = dcmipp_byteproc_get_selection,
+ .set_selection = dcmipp_byteproc_set_selection,
+ .enable_streams = dcmipp_byteproc_enable_streams,
+ .disable_streams = dcmipp_byteproc_disable_streams,
+};
+
static const struct v4l2_subdev_video_ops dcmipp_byteproc_video_ops = {
- .s_stream = dcmipp_byteproc_s_stream,
+ .s_stream = v4l2_subdev_s_stream_helper,
};
static const struct v4l2_subdev_ops dcmipp_byteproc_ops = {
diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-parallel.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-parallel.c
index 05e8897ae37a..ffb71c9fc947 100644
--- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-parallel.c
+++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-parallel.c
@@ -260,18 +260,11 @@ static int dcmipp_par_set_fmt(struct v4l2_subdev *sd,
return 0;
}
-static const struct v4l2_subdev_pad_ops dcmipp_par_pad_ops = {
- .enum_mbus_code = dcmipp_par_enum_mbus_code,
- .enum_frame_size = dcmipp_par_enum_frame_size,
- .get_fmt = v4l2_subdev_get_fmt,
- .set_fmt = dcmipp_par_set_fmt,
-};
-
-static int dcmipp_par_configure(struct dcmipp_par_device *par)
+static int dcmipp_par_configure(struct dcmipp_par_device *par,
+ struct v4l2_subdev_state *state)
{
u32 val = 0;
const struct dcmipp_par_pix_map *vpix;
- struct v4l2_subdev_state *state;
struct v4l2_mbus_framefmt *sink_fmt;
struct v4l2_mbus_framefmt *src_fmt;
@@ -305,10 +298,8 @@ static int dcmipp_par_configure(struct dcmipp_par_device *par)
}
/* Set format */
- state = v4l2_subdev_lock_and_get_active_state(&par->sd);
sink_fmt = v4l2_subdev_state_get_format(state, 0);
src_fmt = v4l2_subdev_state_get_format(state, 1);
- v4l2_subdev_unlock_state(state);
vpix = dcmipp_par_pix_map_by_code(sink_fmt->code, src_fmt->code);
if (!vpix) {
@@ -327,53 +318,79 @@ static int dcmipp_par_configure(struct dcmipp_par_device *par)
return 0;
}
-static int dcmipp_par_s_stream(struct v4l2_subdev *sd, int enable)
+static int dcmipp_par_enable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ u32 pad, u64 streams_mask)
{
struct dcmipp_par_device *par =
container_of(sd, struct dcmipp_par_device, sd);
struct v4l2_subdev *s_subdev;
- struct media_pad *pad;
- int ret = 0;
+ struct media_pad *s_pad;
+ int ret;
/* Get source subdev */
- pad = media_pad_remote_pad_first(&sd->entity.pads[0]);
- if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
+ s_pad = media_pad_remote_pad_first(&sd->entity.pads[0]);
+ if (!s_pad || !is_media_entity_v4l2_subdev(s_pad->entity))
return -EINVAL;
- s_subdev = media_entity_to_v4l2_subdev(pad->entity);
-
- if (enable) {
- ret = dcmipp_par_configure(par);
- if (ret)
- return ret;
-
- /* Enable parallel interface */
- reg_set(par, DCMIPP_PRCR, DCMIPP_PRCR_ENABLE);
-
- ret = v4l2_subdev_call(s_subdev, video, s_stream, enable);
- if (ret < 0) {
- dev_err(par->dev,
- "failed to start source subdev streaming (%d)\n",
- ret);
- return ret;
- }
- } else {
- ret = v4l2_subdev_call(s_subdev, video, s_stream, enable);
- if (ret < 0) {
- dev_err(par->dev,
- "failed to stop source subdev streaming (%d)\n",
- ret);
- return ret;
- }
+ s_subdev = media_entity_to_v4l2_subdev(s_pad->entity);
+
+ ret = dcmipp_par_configure(par);
+ if (ret)
+ return ret;
+
+ /* Enable parallel interface */
+ reg_set(par, DCMIPP_PRCR, DCMIPP_PRCR_ENABLE);
- /* Disable parallel interface */
- reg_clear(par, DCMIPP_PRCR, DCMIPP_PRCR_ENABLE);
+ ret = v4l2_subdev_enable_streams(s_subdev, s_pad->index, BIT_ULL(0));
+ if (ret < 0) {
+ dev_err(par->dev,
+ "failed to start source subdev streaming (%d)\n", ret);
+ return ret;
}
- return ret;
+ return 0;
}
+static int dcmipp_par_disable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ u32 pad, u64 streams_mask)
+{
+ struct dcmipp_par_device *par =
+ container_of(sd, struct dcmipp_par_device, sd);
+ struct v4l2_subdev *s_subdev;
+ struct media_pad *s_pad;
+ int ret;
+
+ /* Get source subdev */
+ s_pad = media_pad_remote_pad_first(&sd->entity.pads[0]);
+ if (!s_pad || !is_media_entity_v4l2_subdev(s_pad->entity))
+ return -EINVAL;
+ s_subdev = media_entity_to_v4l2_subdev(s_pad->entity);
+
+ ret = v4l2_subdev_disable_streams(s_subdev, s_pad->index, BIT_ULL(0));
+ if (ret < 0) {
+ dev_err(par->dev,
+ "failed to stop source subdev streaming (%d)\n", ret);
+ return ret;
+ }
+
+ /* Disable parallel interface */
+ reg_clear(par, DCMIPP_PRCR, DCMIPP_PRCR_ENABLE);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_pad_ops dcmipp_par_pad_ops = {
+ .enum_mbus_code = dcmipp_par_enum_mbus_code,
+ .enum_frame_size = dcmipp_par_enum_frame_size,
+ .get_fmt = v4l2_subdev_get_fmt,
+ .set_fmt = dcmipp_par_set_fmt,
+ .enable_streams = dcmipp_par_enable_streams,
+ .disable_streams = dcmipp_par_disable_streams,
+};
+
static const struct v4l2_subdev_video_ops dcmipp_par_video_ops = {
- .s_stream = dcmipp_par_s_stream,
+ .s_stream = v4l2_subdev_s_stream_helper,
};
static const struct v4l2_subdev_ops dcmipp_par_ops = {
--
2.25.1
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