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Subject: media: rkisp1: resizer: 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_resizer 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 -
.../platform/rockchip/rkisp1/rkisp1-resizer.c | 184 ++++++++-------------
2 files changed, 66 insertions(+), 124 deletions(-)
---
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
index d30f0ecb1bfd..5a03e460e08d 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
@@ -390,10 +390,7 @@ struct rkisp1_params {
* @id: id of the resizer, one of RKISP1_SELFPATH,
RKISP1_MAINPATH
* @rkisp1: pointer to the rkisp1 device
* @pads: media pads
- * @pad_cfg: configurations for the pads
* @config: the set of registers to configure the resizer
- * @pixel_enc: pixel encoding of the resizer
- * @ops_lock: a lock for the subdev ops
*/
struct rkisp1_resizer {
struct v4l2_subdev sd;
@@ -401,10 +398,7 @@ struct rkisp1_resizer {
enum rkisp1_stream_id id;
struct rkisp1_device *rkisp1;
struct media_pad pads[RKISP1_RSZ_PAD_MAX];
- struct v4l2_subdev_pad_config pad_cfg[RKISP1_RSZ_PAD_MAX];
const struct rkisp1_rsz_config *config;
- enum v4l2_pixel_encoding pixel_enc;
- struct mutex ops_lock; /* serialize the subdevice ops */
};
/*
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
index c15ae0218118..6845df38ef5f 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
@@ -117,34 +117,6 @@ static inline void rkisp1_rsz_write(struct rkisp1_resizer
*rsz, u32 offset,
rkisp1_write(rsz->rkisp1, rsz->regs_base + offset, value);
}
-static struct v4l2_mbus_framefmt *
-rkisp1_rsz_get_pad_fmt(struct rkisp1_resizer *rsz,
- struct v4l2_subdev_state *sd_state,
- unsigned int pad, u32 which)
-{
- struct v4l2_subdev_state state = {
- .pads = rsz->pad_cfg,
- };
- if (which == V4L2_SUBDEV_FORMAT_TRY)
- return v4l2_subdev_get_try_format(&rsz->sd, sd_state, pad);
- else
- return v4l2_subdev_get_try_format(&rsz->sd, &state, pad);
-}
-
-static struct v4l2_rect *
-rkisp1_rsz_get_pad_crop(struct rkisp1_resizer *rsz,
- struct v4l2_subdev_state *sd_state,
- unsigned int pad, u32 which)
-{
- struct v4l2_subdev_state state = {
- .pads = rsz->pad_cfg,
- };
- if (which == V4L2_SUBDEV_FORMAT_TRY)
- return v4l2_subdev_get_try_crop(&rsz->sd, sd_state, pad);
- else
- return v4l2_subdev_get_try_crop(&rsz->sd, &state, pad);
-}
-
/* ----------------------------------------------------------------------------
* Dual crop hw configs
*/
@@ -165,17 +137,18 @@ static void rkisp1_dcrop_disable(struct rkisp1_resizer
*rsz,
}
/* configure dual-crop unit */
-static void rkisp1_dcrop_config(struct rkisp1_resizer *rsz)
+static void rkisp1_dcrop_config(struct rkisp1_resizer *rsz,
+ struct v4l2_subdev_state *sd_state)
{
struct rkisp1_device *rkisp1 = rsz->rkisp1;
struct v4l2_mbus_framefmt *sink_fmt;
struct v4l2_rect *sink_crop;
u32 dc_ctrl;
- sink_crop = rkisp1_rsz_get_pad_crop(rsz, NULL, RKISP1_RSZ_PAD_SINK,
- V4L2_SUBDEV_FORMAT_ACTIVE);
- sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, NULL, RKISP1_RSZ_PAD_SINK,
- V4L2_SUBDEV_FORMAT_ACTIVE);
+ sink_crop = v4l2_subdev_get_pad_crop(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SINK);
+ sink_fmt = v4l2_subdev_get_pad_format(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SINK);
if (sink_crop->width == sink_fmt->width &&
sink_crop->height == sink_fmt->height &&
@@ -296,6 +269,7 @@ static void rkisp1_rsz_config_regs(struct rkisp1_resizer
*rsz,
}
static void rkisp1_rsz_config(struct rkisp1_resizer *rsz,
+ struct v4l2_subdev_state *sd_state,
enum rkisp1_shadow_regs_when when)
{
const struct rkisp1_rsz_yuv_mbus_info *sink_yuv_info, *src_yuv_info;
@@ -303,20 +277,21 @@ static void rkisp1_rsz_config(struct rkisp1_resizer *rsz,
struct v4l2_mbus_framefmt *src_fmt, *sink_fmt;
struct v4l2_rect *sink_crop;
- sink_crop = rkisp1_rsz_get_pad_crop(rsz, NULL, RKISP1_RSZ_PAD_SINK,
- V4L2_SUBDEV_FORMAT_ACTIVE);
- src_fmt = rkisp1_rsz_get_pad_fmt(rsz, NULL, RKISP1_RSZ_PAD_SRC,
- V4L2_SUBDEV_FORMAT_ACTIVE);
- src_yuv_info = rkisp1_rsz_get_yuv_mbus_info(src_fmt->code);
- sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, NULL, RKISP1_RSZ_PAD_SINK,
- V4L2_SUBDEV_FORMAT_ACTIVE);
+ sink_fmt = v4l2_subdev_get_pad_format(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SINK);
+ sink_crop = v4l2_subdev_get_pad_crop(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SINK);
+ src_fmt = v4l2_subdev_get_pad_format(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SRC);
+
sink_yuv_info = rkisp1_rsz_get_yuv_mbus_info(sink_fmt->code);
+ src_yuv_info = rkisp1_rsz_get_yuv_mbus_info(src_fmt->code);
/*
* The resizer only works on yuv formats,
* so return if it is bayer format.
*/
- if (rsz->pixel_enc == V4L2_PIXEL_ENC_BAYER) {
+ if (!sink_yuv_info) {
rkisp1_rsz_disable(rsz, when);
return;
}
@@ -405,7 +380,7 @@ static int rkisp1_rsz_init_config(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *sink_fmt, *src_fmt;
struct v4l2_rect *sink_crop;
- sink_fmt = v4l2_subdev_get_try_format(sd, sd_state,
+ sink_fmt = v4l2_subdev_get_pad_format(sd, sd_state,
RKISP1_RSZ_PAD_SRC);
sink_fmt->width = RKISP1_DEFAULT_WIDTH;
sink_fmt->height = RKISP1_DEFAULT_HEIGHT;
@@ -423,7 +398,7 @@ static int rkisp1_rsz_init_config(struct v4l2_subdev *sd,
sink_crop->left = 0;
sink_crop->top = 0;
- src_fmt = v4l2_subdev_get_try_format(sd, sd_state,
+ src_fmt = v4l2_subdev_get_pad_format(sd, sd_state,
RKISP1_RSZ_PAD_SINK);
*src_fmt = *sink_fmt;
@@ -434,16 +409,16 @@ static int rkisp1_rsz_init_config(struct v4l2_subdev *sd,
static void rkisp1_rsz_set_src_fmt(struct rkisp1_resizer *rsz,
struct v4l2_subdev_state *sd_state,
- struct v4l2_mbus_framefmt *format,
- unsigned int which)
+ struct v4l2_mbus_framefmt *format)
{
const struct rkisp1_mbus_info *sink_mbus_info;
struct v4l2_mbus_framefmt *src_fmt, *sink_fmt;
- sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, sd_state, RKISP1_RSZ_PAD_SINK,
- which);
- src_fmt = rkisp1_rsz_get_pad_fmt(rsz, sd_state, RKISP1_RSZ_PAD_SRC,
- which);
+ sink_fmt = v4l2_subdev_get_pad_format(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SINK);
+ src_fmt = v4l2_subdev_get_pad_format(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SRC);
+
sink_mbus_info = rkisp1_mbus_info_get_by_code(sink_fmt->code);
/* for YUV formats, userspace can change the mbus code on the src pad
if it is supported */
@@ -463,18 +438,16 @@ static void rkisp1_rsz_set_src_fmt(struct rkisp1_resizer
*rsz,
static void rkisp1_rsz_set_sink_crop(struct rkisp1_resizer *rsz,
struct v4l2_subdev_state *sd_state,
- struct v4l2_rect *r,
- unsigned int which)
+ struct v4l2_rect *r)
{
const struct rkisp1_mbus_info *mbus_info;
struct v4l2_mbus_framefmt *sink_fmt;
struct v4l2_rect *sink_crop;
- sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, sd_state, RKISP1_RSZ_PAD_SINK,
- which);
- sink_crop = rkisp1_rsz_get_pad_crop(rsz, sd_state,
- RKISP1_RSZ_PAD_SINK,
- which);
+ sink_fmt = v4l2_subdev_get_pad_format(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SINK);
+ sink_crop = v4l2_subdev_get_pad_crop(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SINK);
/* Not crop for MP bayer raw data */
mbus_info = rkisp1_mbus_info_get_by_code(sink_fmt->code);
@@ -501,21 +474,20 @@ static void rkisp1_rsz_set_sink_crop(struct
rkisp1_resizer *rsz,
static void rkisp1_rsz_set_sink_fmt(struct rkisp1_resizer *rsz,
struct v4l2_subdev_state *sd_state,
- struct v4l2_mbus_framefmt *format,
- unsigned int which)
+ struct v4l2_mbus_framefmt *format)
{
const struct rkisp1_mbus_info *mbus_info;
struct v4l2_mbus_framefmt *sink_fmt, *src_fmt;
struct v4l2_rect *sink_crop;
bool is_yuv;
- sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, sd_state, RKISP1_RSZ_PAD_SINK,
- which);
- src_fmt = rkisp1_rsz_get_pad_fmt(rsz, sd_state, RKISP1_RSZ_PAD_SRC,
- which);
- sink_crop = rkisp1_rsz_get_pad_crop(rsz, sd_state,
- RKISP1_RSZ_PAD_SINK,
- which);
+ sink_fmt = v4l2_subdev_get_pad_format(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SINK);
+ src_fmt = v4l2_subdev_get_pad_format(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SRC);
+ sink_crop = v4l2_subdev_get_pad_crop(&rsz->sd, sd_state,
+ RKISP1_RSZ_PAD_SINK);
+
if (rsz->id == RKISP1_SELFPATH)
sink_fmt->code = MEDIA_BUS_FMT_YUYV8_2X8;
else
@@ -526,8 +498,6 @@ static void rkisp1_rsz_set_sink_fmt(struct rkisp1_resizer
*rsz,
sink_fmt->code = RKISP1_DEF_FMT;
mbus_info = rkisp1_mbus_info_get_by_code(sink_fmt->code);
}
- if (which == V4L2_SUBDEV_FORMAT_ACTIVE)
- rsz->pixel_enc = mbus_info->pixel_enc;
sink_fmt->width = clamp_t(u32, format->width,
RKISP1_ISP_MIN_WIDTH,
@@ -576,21 +546,7 @@ static void rkisp1_rsz_set_sink_fmt(struct rkisp1_resizer
*rsz,
src_fmt->quantization = sink_fmt->quantization;
/* Update sink crop */
- rkisp1_rsz_set_sink_crop(rsz, sd_state, sink_crop, which);
-}
-
-static int rkisp1_rsz_get_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *fmt)
-{
- struct rkisp1_resizer *rsz =
- container_of(sd, struct rkisp1_resizer, sd);
-
- mutex_lock(&rsz->ops_lock);
- fmt->format = *rkisp1_rsz_get_pad_fmt(rsz, sd_state, fmt->pad,
- fmt->which);
- mutex_unlock(&rsz->ops_lock);
- return 0;
+ rkisp1_rsz_set_sink_crop(rsz, sd_state, sink_crop);
}
static int rkisp1_rsz_set_fmt(struct v4l2_subdev *sd,
@@ -600,15 +556,11 @@ static int rkisp1_rsz_set_fmt(struct v4l2_subdev *sd,
struct rkisp1_resizer *rsz =
container_of(sd, struct rkisp1_resizer, sd);
- mutex_lock(&rsz->ops_lock);
if (fmt->pad == RKISP1_RSZ_PAD_SINK)
- rkisp1_rsz_set_sink_fmt(rsz, sd_state, &fmt->format,
- fmt->which);
+ rkisp1_rsz_set_sink_fmt(rsz, sd_state, &fmt->format);
else
- rkisp1_rsz_set_src_fmt(rsz, sd_state, &fmt->format,
- fmt->which);
+ rkisp1_rsz_set_src_fmt(rsz, sd_state, &fmt->format);
- mutex_unlock(&rsz->ops_lock);
return 0;
}
@@ -616,35 +568,32 @@ static int rkisp1_rsz_get_selection(struct v4l2_subdev
*sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
- struct rkisp1_resizer *rsz =
- container_of(sd, struct rkisp1_resizer, sd);
struct v4l2_mbus_framefmt *mf_sink;
int ret = 0;
if (sel->pad == RKISP1_RSZ_PAD_SRC)
return -EINVAL;
- mutex_lock(&rsz->ops_lock);
switch (sel->target) {
case V4L2_SEL_TGT_CROP_BOUNDS:
- mf_sink = rkisp1_rsz_get_pad_fmt(rsz, sd_state,
- RKISP1_RSZ_PAD_SINK,
- sel->which);
+ mf_sink = v4l2_subdev_get_pad_format(sd, sd_state,
+ RKISP1_RSZ_PAD_SINK);
sel->r.height = mf_sink->height;
sel->r.width = mf_sink->width;
sel->r.left = 0;
sel->r.top = 0;
break;
+
case V4L2_SEL_TGT_CROP:
- sel->r = *rkisp1_rsz_get_pad_crop(rsz, sd_state,
- RKISP1_RSZ_PAD_SINK,
- sel->which);
+ sel->r = *v4l2_subdev_get_pad_crop(sd, sd_state,
+ RKISP1_RSZ_PAD_SINK);
break;
+
default:
ret = -EINVAL;
+ break;
}
- mutex_unlock(&rsz->ops_lock);
return ret;
}
@@ -661,9 +610,7 @@ static int rkisp1_rsz_set_selection(struct v4l2_subdev *sd,
dev_dbg(rsz->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(&rsz->ops_lock);
- rkisp1_rsz_set_sink_crop(rsz, sd_state, &sel->r, sel->which);
- mutex_unlock(&rsz->ops_lock);
+ rkisp1_rsz_set_sink_crop(rsz, sd_state, &sel->r);
return 0;
}
@@ -677,7 +624,7 @@ static const struct v4l2_subdev_pad_ops rkisp1_rsz_pad_ops
= {
.get_selection = rkisp1_rsz_get_selection,
.set_selection = rkisp1_rsz_set_selection,
.init_cfg = rkisp1_rsz_init_config,
- .get_fmt = rkisp1_rsz_get_fmt,
+ .get_fmt = v4l2_subdev_get_fmt,
.set_fmt = rkisp1_rsz_set_fmt,
.link_validate = v4l2_subdev_link_validate_default,
};
@@ -693,6 +640,7 @@ static int rkisp1_rsz_s_stream(struct v4l2_subdev *sd, int
enable)
struct rkisp1_device *rkisp1 = rsz->rkisp1;
struct rkisp1_capture *other = &rkisp1->capture_devs[rsz->id ^ 1];
enum rkisp1_shadow_regs_when when = RKISP1_SHADOW_REGS_SYNC;
+ struct v4l2_subdev_state *sd_state;
if (!enable) {
rkisp1_dcrop_disable(rsz, RKISP1_SHADOW_REGS_ASYNC);
@@ -703,11 +651,13 @@ static int rkisp1_rsz_s_stream(struct v4l2_subdev *sd,
int enable)
if (other->is_streaming)
when = RKISP1_SHADOW_REGS_ASYNC;
- mutex_lock(&rsz->ops_lock);
- rkisp1_rsz_config(rsz, when);
- rkisp1_dcrop_config(rsz);
+ sd_state = v4l2_subdev_lock_and_get_active_state(sd);
+
+ rkisp1_rsz_config(rsz, sd_state, when);
+ rkisp1_dcrop_config(rsz, sd_state);
+
+ v4l2_subdev_unlock_state(sd_state);
- mutex_unlock(&rsz->ops_lock);
return 0;
}
@@ -726,15 +676,12 @@ static void rkisp1_rsz_unregister(struct rkisp1_resizer
*rsz)
return;
v4l2_device_unregister_subdev(&rsz->sd);
+ v4l2_subdev_cleanup(&rsz->sd);
media_entity_cleanup(&rsz->sd.entity);
- mutex_destroy(&rsz->ops_lock);
}
static int rkisp1_rsz_register(struct rkisp1_resizer *rsz)
{
- struct v4l2_subdev_state state = {
- .pads = rsz->pad_cfg,
- };
static const char * const dev_names[] = {
RKISP1_RSZ_MP_DEV_NAME,
RKISP1_RSZ_SP_DEV_NAME
@@ -763,25 +710,26 @@ static int rkisp1_rsz_register(struct rkisp1_resizer *rsz)
pads[RKISP1_RSZ_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE |
MEDIA_PAD_FL_MUST_CONNECT;
- rsz->pixel_enc = RKISP1_DEF_PIXEL_ENC;
-
- mutex_init(&rsz->ops_lock);
ret = media_entity_pads_init(&sd->entity, RKISP1_RSZ_PAD_MAX, pads);
if (ret)
- goto error;
+ goto err_entity_cleanup;
+
+ ret = v4l2_subdev_init_finalize(sd);
+ if (ret)
+ goto err_entity_cleanup;
ret = v4l2_device_register_subdev(&rsz->rkisp1->v4l2_dev, sd);
if (ret) {
dev_err(sd->dev, "Failed to register resizer subdev\n");
- goto error;
+ goto err_subdev_cleanup;
}
- rkisp1_rsz_init_config(sd, &state);
return 0;
-error:
+err_subdev_cleanup:
+ v4l2_subdev_cleanup(sd);
+err_entity_cleanup:
media_entity_cleanup(&sd->entity);
- mutex_destroy(&rsz->ops_lock);
return ret;
}
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