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authorDafna Hirschfeld <dafna.hirschfeld@collabora.com>2020-02-07 09:59:50 +0100
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2020-02-24 17:50:20 +0100
commit99adeeb67cecf57c2cd1837f3eed48672a884d94 (patch)
tree472adf290a901d3087c1dc277efddeef5b0b658c
parent129f757cd0ec3268820e20687009c97915fe1182 (diff)
media: staging: rkisp1: add serialization to the isp subdev ops
For subdevices drivers, the drivers themself are responsible for serializing their operations. This patch adds serialization to the isp subdevice. Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
-rw-r--r--drivers/staging/media/rkisp1/rkisp1-common.h2
-rw-r--r--drivers/staging/media/rkisp1/rkisp1-isp.c29
2 files changed, 23 insertions, 8 deletions
diff --git a/drivers/staging/media/rkisp1/rkisp1-common.h b/drivers/staging/media/rkisp1/rkisp1-common.h
index 369a401b098a..6903c013dfdf 100644
--- a/drivers/staging/media/rkisp1/rkisp1-common.h
+++ b/drivers/staging/media/rkisp1/rkisp1-common.h
@@ -96,6 +96,7 @@ struct rkisp1_sensor_async {
* @sink_crop: crop for sink pad
* @src_fmt: output format
* @src_crop: output size
+ * @ops_lock: ops serialization
*
* @is_dphy_errctrl_disabled : if dphy errctrl is disabled (avoid endless interrupt)
* @frame_sequence: used to synchronize frame_id between video devices.
@@ -107,6 +108,7 @@ struct rkisp1_isp {
struct v4l2_subdev_pad_config pad_cfg[RKISP1_ISP_PAD_MAX];
const struct rkisp1_isp_mbus_info *sink_fmt;
const struct rkisp1_isp_mbus_info *src_fmt;
+ struct mutex ops_lock;
bool is_dphy_errctrl_disabled;
atomic_t frame_sequence;
};
diff --git a/drivers/staging/media/rkisp1/rkisp1-isp.c b/drivers/staging/media/rkisp1/rkisp1-isp.c
index 9ad02bba14c0..fa53f05e37d8 100644
--- a/drivers/staging/media/rkisp1/rkisp1-isp.c
+++ b/drivers/staging/media/rkisp1/rkisp1-isp.c
@@ -791,7 +791,9 @@ static int rkisp1_isp_get_fmt(struct v4l2_subdev *sd,
{
struct rkisp1_isp *isp = container_of(sd, struct rkisp1_isp, sd);
+ mutex_lock(&isp->ops_lock);
fmt->format = *rkisp1_isp_get_pad_fmt(isp, cfg, fmt->pad, fmt->which);
+ mutex_unlock(&isp->ops_lock);
return 0;
}
@@ -801,6 +803,7 @@ static int rkisp1_isp_set_fmt(struct v4l2_subdev *sd,
{
struct rkisp1_isp *isp = container_of(sd, struct rkisp1_isp, sd);
+ mutex_lock(&isp->ops_lock);
if (fmt->pad == RKISP1_ISP_PAD_SINK_VIDEO)
rkisp1_isp_set_sink_fmt(isp, cfg, &fmt->format, fmt->which);
else if (fmt->pad == RKISP1_ISP_PAD_SOURCE_VIDEO)
@@ -809,6 +812,7 @@ static int rkisp1_isp_set_fmt(struct v4l2_subdev *sd,
fmt->format = *rkisp1_isp_get_pad_fmt(isp, cfg, fmt->pad,
fmt->which);
+ mutex_unlock(&isp->ops_lock);
return 0;
}
@@ -817,11 +821,13 @@ static int rkisp1_isp_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_selection *sel)
{
struct rkisp1_isp *isp = container_of(sd, struct rkisp1_isp, sd);
+ int ret = 0;
if (sel->pad != RKISP1_ISP_PAD_SOURCE_VIDEO &&
sel->pad != RKISP1_ISP_PAD_SINK_VIDEO)
return -EINVAL;
+ mutex_lock(&isp->ops_lock);
switch (sel->target) {
case V4L2_SEL_TGT_CROP_BOUNDS:
if (sel->pad == RKISP1_ISP_PAD_SINK_VIDEO) {
@@ -844,10 +850,10 @@ static int rkisp1_isp_get_selection(struct v4l2_subdev *sd,
sel->which);
break;
default:
- return -EINVAL;
+ ret = -EINVAL;
}
-
- return 0;
+ mutex_unlock(&isp->ops_lock);
+ return ret;
}
static int rkisp1_isp_set_selection(struct v4l2_subdev *sd,
@@ -857,21 +863,23 @@ static int rkisp1_isp_set_selection(struct v4l2_subdev *sd,
struct rkisp1_device *rkisp1 =
container_of(sd->v4l2_dev, struct rkisp1_device, v4l2_dev);
struct rkisp1_isp *isp = container_of(sd, struct rkisp1_isp, sd);
+ int ret = 0;
if (sel->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
dev_dbg(rkisp1->dev, "%s: pad: %d sel(%d,%d)/%dx%d\n", __func__,
sel->pad, sel->r.left, sel->r.top, sel->r.width, sel->r.height);
-
+ mutex_lock(&isp->ops_lock);
if (sel->pad == RKISP1_ISP_PAD_SINK_VIDEO)
rkisp1_isp_set_sink_crop(isp, cfg, &sel->r, sel->which);
else if (sel->pad == RKISP1_ISP_PAD_SOURCE_VIDEO)
rkisp1_isp_set_src_crop(isp, cfg, &sel->r, sel->which);
else
- return -EINVAL;
+ ret = -EINVAL;
- return 0;
+ mutex_unlock(&isp->ops_lock);
+ return ret;
}
static int rkisp1_subdev_link_validate(struct media_link *link)
@@ -932,6 +940,7 @@ static int rkisp1_isp_s_stream(struct v4l2_subdev *sd, int enable)
{
struct rkisp1_device *rkisp1 =
container_of(sd->v4l2_dev, struct rkisp1_device, v4l2_dev);
+ struct rkisp1_isp *isp = &rkisp1->isp;
struct v4l2_subdev *sensor_sd;
int ret = 0;
@@ -951,16 +960,19 @@ static int rkisp1_isp_s_stream(struct v4l2_subdev *sd, int enable)
return -EINVAL;
atomic_set(&rkisp1->isp.frame_sequence, -1);
+ mutex_lock(&isp->ops_lock);
ret = rkisp1_config_cif(rkisp1);
if (ret)
- return ret;
+ goto mutex_unlock;
ret = rkisp1_mipi_csi2_start(&rkisp1->isp, rkisp1->active_sensor);
if (ret)
- return ret;
+ goto mutex_unlock;
rkisp1_isp_start(rkisp1);
+mutex_unlock:
+ mutex_unlock(&isp->ops_lock);
return ret;
}
@@ -1020,6 +1032,7 @@ int rkisp1_isp_register(struct rkisp1_device *rkisp1,
isp->sink_fmt = rkisp1_isp_mbus_info_get(RKISP1_DEF_SINK_PAD_FMT);
isp->src_fmt = rkisp1_isp_mbus_info_get(RKISP1_DEF_SRC_PAD_FMT);
+ mutex_init(&isp->ops_lock);
ret = media_entity_pads_init(&sd->entity, RKISP1_ISP_PAD_MAX, pads);
if (ret)
return ret;

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