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Subject: media: rkisp1: csi: Use V4L2 subdev active state
Author: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Date: Thu Jan 26 03:10:01 2023 +0200
Use the V4L2 subdev active state API to store the active format and crop
rectangle. This simplifies the driver not only by dropping the state
stored in the rkisp1_csi structure, but also by replacing the ops_lock
with the state lock.
Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Reviewed-by: Paul Elder <paul.el...@ideasonboard.com>
Reviewed-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
.../media/platform/rockchip/rkisp1/rkisp1-common.h | 6 --
.../media/platform/rockchip/rkisp1/rkisp1-csi.c | 107 +++++++--------------
2 files changed, 33 insertions(+), 80 deletions(-)
---
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
index 053ce04066b6..1e7cea1bea5e 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
@@ -167,9 +167,6 @@ struct rkisp1_sensor_async {
* @is_dphy_errctrl_disabled: if dphy errctrl is disabled (avoid endless
interrupt)
* @sd: v4l2_subdev variable
* @pads: media pads
- * @pad_cfg: configurations for the pads
- * @sink_fmt: input format
- * @lock: protects pad_cfg and sink_fmt
* @source: source in-use, set when starting streaming
*/
struct rkisp1_csi {
@@ -178,9 +175,6 @@ struct rkisp1_csi {
bool is_dphy_errctrl_disabled;
struct v4l2_subdev sd;
struct media_pad pads[RKISP1_CSI_PAD_NUM];
- struct v4l2_subdev_pad_config pad_cfg[RKISP1_CSI_PAD_NUM];
- const struct rkisp1_mbus_info *sink_fmt;
- struct mutex lock;
struct v4l2_subdev *source;
};
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-csi.c
b/drivers/media/platform/rockchip/rkisp1/rkisp1-csi.c
index fdff3d0da4e5..6e17b2817e61 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-csi.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-csi.c
@@ -30,23 +30,6 @@ static inline struct rkisp1_csi *to_rkisp1_csi(struct
v4l2_subdev *sd)
return container_of(sd, struct rkisp1_csi, sd);
}
-static struct v4l2_mbus_framefmt *
-rkisp1_csi_get_pad_fmt(struct rkisp1_csi *csi,
- struct v4l2_subdev_state *sd_state,
- unsigned int pad, u32 which)
-{
- struct v4l2_subdev_state state = {
- .pads = csi->pad_cfg
- };
-
- lockdep_assert_held(&csi->lock);
-
- if (which == V4L2_SUBDEV_FORMAT_TRY)
- return v4l2_subdev_get_try_format(&csi->sd, sd_state, pad);
- else
- return v4l2_subdev_get_try_format(&csi->sd, &state, pad);
-}
-
int rkisp1_csi_link_sensor(struct rkisp1_device *rkisp1, struct v4l2_subdev
*sd,
struct rkisp1_sensor_async *s_asd,
unsigned int source_pad)
@@ -76,7 +59,8 @@ int rkisp1_csi_link_sensor(struct rkisp1_device *rkisp1,
struct v4l2_subdev *sd,
}
static int rkisp1_csi_config(struct rkisp1_csi *csi,
- const struct rkisp1_sensor_async *sensor)
+ const struct rkisp1_sensor_async *sensor,
+ const struct rkisp1_mbus_info *format)
{
struct rkisp1_device *rkisp1 = csi->rkisp1;
unsigned int lanes = sensor->lanes;
@@ -98,7 +82,7 @@ static int rkisp1_csi_config(struct rkisp1_csi *csi,
/* Configure Data Type and Virtual Channel */
rkisp1_write(rkisp1, RKISP1_CIF_MIPI_IMG_DATA_SEL,
- RKISP1_CIF_MIPI_DATA_SEL_DT(csi->sink_fmt->mipi_dt) |
+ RKISP1_CIF_MIPI_DATA_SEL_DT(format->mipi_dt) |
RKISP1_CIF_MIPI_DATA_SEL_VC(0));
/* Clear MIPI interrupts */
@@ -151,7 +135,8 @@ static void rkisp1_csi_disable(struct rkisp1_csi *csi)
}
static int rkisp1_csi_start(struct rkisp1_csi *csi,
- const struct rkisp1_sensor_async *sensor)
+ const struct rkisp1_sensor_async *sensor,
+ const struct rkisp1_mbus_info *format)
{
struct rkisp1_device *rkisp1 = csi->rkisp1;
union phy_configure_opts opts;
@@ -159,7 +144,7 @@ static int rkisp1_csi_start(struct rkisp1_csi *csi,
s64 pixel_clock;
int ret;
- ret = rkisp1_csi_config(csi, sensor);
+ ret = rkisp1_csi_config(csi, sensor, format);
if (ret)
return ret;
@@ -169,7 +154,7 @@ static int rkisp1_csi_start(struct rkisp1_csi *csi,
return -EINVAL;
}
- phy_mipi_dphy_get_default_config(pixel_clock, csi->sink_fmt->bus_width,
+ phy_mipi_dphy_get_default_config(pixel_clock, format->bus_width,
sensor->lanes, cfg);
phy_set_mode(csi->dphy, PHY_MODE_MIPI_DPHY);
phy_configure(csi->dphy, &opts);
@@ -248,7 +233,6 @@ static int rkisp1_csi_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
- struct rkisp1_csi *csi = to_rkisp1_csi(sd);
unsigned int i;
int pos = 0;
@@ -258,15 +242,10 @@ static int rkisp1_csi_enum_mbus_code(struct v4l2_subdev
*sd,
if (code->index)
return -EINVAL;
- mutex_lock(&csi->lock);
-
- sink_fmt = rkisp1_csi_get_pad_fmt(csi, sd_state,
- RKISP1_CSI_PAD_SINK,
- code->which);
+ sink_fmt = v4l2_subdev_get_pad_format(sd, sd_state,
+ RKISP1_CSI_PAD_SINK);
code->code = sink_fmt->code;
- mutex_unlock(&csi->lock);
-
return 0;
}
@@ -296,9 +275,9 @@ static int rkisp1_csi_init_config(struct v4l2_subdev *sd,
{
struct v4l2_mbus_framefmt *sink_fmt, *src_fmt;
- sink_fmt = v4l2_subdev_get_try_format(sd, sd_state,
+ sink_fmt = v4l2_subdev_get_pad_format(sd, sd_state,
RKISP1_CSI_PAD_SINK);
- src_fmt = v4l2_subdev_get_try_format(sd, sd_state,
+ src_fmt = v4l2_subdev_get_pad_format(sd, sd_state,
RKISP1_CSI_PAD_SRC);
sink_fmt->width = RKISP1_DEFAULT_WIDTH;
@@ -311,36 +290,18 @@ static int rkisp1_csi_init_config(struct v4l2_subdev *sd,
return 0;
}
-static int rkisp1_csi_get_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *fmt)
-{
- struct rkisp1_csi *csi = to_rkisp1_csi(sd);
-
- mutex_lock(&csi->lock);
- fmt->format = *rkisp1_csi_get_pad_fmt(csi, sd_state, fmt->pad,
- fmt->which);
- mutex_unlock(&csi->lock);
-
- return 0;
-}
-
static int rkisp1_csi_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
- struct rkisp1_csi *csi = to_rkisp1_csi(sd);
const struct rkisp1_mbus_info *mbus_info;
struct v4l2_mbus_framefmt *sink_fmt, *src_fmt;
/* The format on the source pad always matches the sink pad. */
if (fmt->pad == RKISP1_CSI_PAD_SRC)
- return rkisp1_csi_get_fmt(sd, sd_state, fmt);
+ return v4l2_subdev_get_fmt(sd, sd_state, fmt);
- mutex_lock(&csi->lock);
-
- sink_fmt = rkisp1_csi_get_pad_fmt(csi, sd_state, RKISP1_CSI_PAD_SINK,
- fmt->which);
+ sink_fmt = v4l2_subdev_get_pad_format(sd, sd_state,
RKISP1_CSI_PAD_SINK);
sink_fmt->code = fmt->format.code;
@@ -359,16 +320,10 @@ static int rkisp1_csi_set_fmt(struct v4l2_subdev *sd,
fmt->format = *sink_fmt;
- if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
- csi->sink_fmt = mbus_info;
-
/* Propagate the format to the source pad. */
- src_fmt = rkisp1_csi_get_pad_fmt(csi, sd_state, RKISP1_CSI_PAD_SRC,
- fmt->which);
+ src_fmt = v4l2_subdev_get_pad_format(sd, sd_state, RKISP1_CSI_PAD_SRC);
*src_fmt = *sink_fmt;
- mutex_unlock(&csi->lock);
-
return 0;
}
@@ -380,8 +335,11 @@ static int rkisp1_csi_s_stream(struct v4l2_subdev *sd, int
enable)
{
struct rkisp1_csi *csi = to_rkisp1_csi(sd);
struct rkisp1_device *rkisp1 = csi->rkisp1;
+ const struct v4l2_mbus_framefmt *sink_fmt;
+ const struct rkisp1_mbus_info *format;
struct rkisp1_sensor_async *source_asd;
struct v4l2_async_connection *asc;
+ struct v4l2_subdev_state *sd_state;
struct media_pad *source_pad;
struct v4l2_subdev *source;
int ret;
@@ -415,9 +373,12 @@ static int rkisp1_csi_s_stream(struct v4l2_subdev *sd, int
enable)
if (source_asd->mbus_type != V4L2_MBUS_CSI2_DPHY)
return -EINVAL;
- mutex_lock(&csi->lock);
- ret = rkisp1_csi_start(csi, source_asd);
- mutex_unlock(&csi->lock);
+ sd_state = v4l2_subdev_lock_and_get_active_state(sd);
+ sink_fmt = v4l2_subdev_get_pad_format(sd, sd_state,
RKISP1_CSI_PAD_SINK);
+ format = rkisp1_mbus_info_get_by_code(sink_fmt->code);
+ v4l2_subdev_unlock_state(sd_state);
+
+ ret = rkisp1_csi_start(csi, source_asd, format);
if (ret)
return ret;
@@ -447,7 +408,7 @@ static const struct v4l2_subdev_video_ops
rkisp1_csi_video_ops = {
static const struct v4l2_subdev_pad_ops rkisp1_csi_pad_ops = {
.enum_mbus_code = rkisp1_csi_enum_mbus_code,
.init_cfg = rkisp1_csi_init_config,
- .get_fmt = rkisp1_csi_get_fmt,
+ .get_fmt = v4l2_subdev_get_fmt,
.set_fmt = rkisp1_csi_set_fmt,
};
@@ -459,13 +420,11 @@ static const struct v4l2_subdev_ops rkisp1_csi_ops = {
int rkisp1_csi_register(struct rkisp1_device *rkisp1)
{
struct rkisp1_csi *csi = &rkisp1->csi;
- struct v4l2_subdev_state state = {};
struct media_pad *pads;
struct v4l2_subdev *sd;
int ret;
csi->rkisp1 = rkisp1;
- mutex_init(&csi->lock);
sd = &csi->sd;
v4l2_subdev_init(sd, &rkisp1_csi_ops);
@@ -481,26 +440,26 @@ int rkisp1_csi_register(struct rkisp1_device *rkisp1)
pads[RKISP1_CSI_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE |
MEDIA_PAD_FL_MUST_CONNECT;
- csi->sink_fmt = rkisp1_mbus_info_get_by_code(RKISP1_CSI_DEF_FMT);
-
ret = media_entity_pads_init(&sd->entity, RKISP1_CSI_PAD_NUM, pads);
if (ret)
- goto error;
+ goto err_entity_cleanup;
- state.pads = csi->pad_cfg;
- rkisp1_csi_init_config(sd, &state);
+ ret = v4l2_subdev_init_finalize(sd);
+ if (ret)
+ goto err_entity_cleanup;
ret = v4l2_device_register_subdev(&csi->rkisp1->v4l2_dev, sd);
if (ret) {
dev_err(sd->dev, "Failed to register csi receiver subdev\n");
- goto error;
+ goto err_subdev_cleanup;
}
return 0;
-error:
+err_subdev_cleanup:
+ v4l2_subdev_cleanup(sd);
+err_entity_cleanup:
media_entity_cleanup(&sd->entity);
- mutex_destroy(&csi->lock);
csi->rkisp1 = NULL;
return ret;
}
@@ -513,8 +472,8 @@ void rkisp1_csi_unregister(struct rkisp1_device *rkisp1)
return;
v4l2_device_unregister_subdev(&csi->sd);
+ v4l2_subdev_cleanup(&csi->sd);
media_entity_cleanup(&csi->sd.entity);
- mutex_destroy(&csi->lock);
}
int rkisp1_csi_init(struct rkisp1_device *rkisp1)
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