diff options
author | Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> | 2021-06-10 17:55:58 +0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-06-17 11:01:27 +0300 |
commit | 0d346d2a6f54f06f36b224fd27cd6eafe8c83be9 (patch) | |
tree | eacbf2d204719794c200ee1b062f09d07ad8ddd1 /drivers/media/platform/qcom/camss/camss-csid.c | |
parent | 6f2f49ae4c287fbaaed89b2b262a9b99d27302fb (diff) | |
download | linux-0d346d2a6f54f06f36b224fd27cd6eafe8c83be9.tar.xz |
media: v4l2-subdev: add subdev-wide state struct
We have 'struct v4l2_subdev_pad_config' which contains configuration for
a single pad used for the TRY functionality, and an array of those
structs is passed to various v4l2_subdev_pad_ops.
I was working on subdev internal routing between pads, and realized that
there's no way to add TRY functionality for routes, which is not pad
specific configuration. Adding a separate struct for try-route config
wouldn't work either, as e.g. set-fmt needs to know the try-route
configuration to propagate the settings.
This patch adds a new struct, 'struct v4l2_subdev_state' (which at the
moment only contains the v4l2_subdev_pad_config array) and the new
struct is used in most of the places where v4l2_subdev_pad_config was
used. All v4l2_subdev_pad_ops functions taking v4l2_subdev_pad_config
are changed to instead take v4l2_subdev_state.
The changes to drivers/media/v4l2-core/v4l2-subdev.c and
include/media/v4l2-subdev.h were written by hand, and all the driver
changes were done with the semantic patch below. The spatch needs to be
applied to a select list of directories. I used the following shell
commands to apply the spatch:
dirs="drivers/media/i2c drivers/media/platform drivers/media/usb drivers/media/test-drivers/vimc drivers/media/pci drivers/staging/media"
for dir in $dirs; do spatch -j8 --dir --include-headers --no-show-diff --in-place --sp-file v4l2-subdev-state.cocci $dir; done
Note that Coccinelle chokes on a few drivers (gcc extensions?). With
minor changes we can make Coccinelle run fine, and these changes can be
reverted after spatch. The diff for these changes is:
For drivers/media/i2c/s5k5baf.c:
@@ -1481,7 +1481,7 @@ static int s5k5baf_set_selection(struct v4l2_subdev *sd,
&s5k5baf_cis_rect,
v4l2_subdev_get_try_crop(sd, cfg, PAD_CIS),
v4l2_subdev_get_try_compose(sd, cfg, PAD_CIS),
- v4l2_subdev_get_try_crop(sd, cfg, PAD_OUT)
+ v4l2_subdev_get_try_crop(sd, cfg, PAD_OUT),
};
s5k5baf_set_rect_and_adjust(rects, rtype, &sel->r);
return 0;
For drivers/media/platform/s3c-camif/camif-capture.c:
@@ -1230,7 +1230,7 @@ static int s3c_camif_subdev_get_fmt(struct v4l2_subdev *sd,
*mf = camif->mbus_fmt;
break;
- case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
+ case CAMIF_SD_PAD_SOURCE_C:
/* crop rectangle at camera interface input */
mf->width = camif->camif_crop.width;
mf->height = camif->camif_crop.height;
@@ -1332,7 +1332,7 @@ static int s3c_camif_subdev_set_fmt(struct v4l2_subdev *sd,
}
break;
- case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
+ case CAMIF_SD_PAD_SOURCE_C:
/* Pixel format can be only changed on the sink pad. */
mf->code = camif->mbus_fmt.code;
mf->width = crop->width;
The semantic patch is:
// <smpl>
// Change function parameter
@@
identifier func;
identifier cfg;
@@
func(...,
- struct v4l2_subdev_pad_config *cfg
+ struct v4l2_subdev_state *sd_state
, ...)
{
<...
- cfg
+ sd_state
...>
}
// Change function declaration parameter
@@
identifier func;
identifier cfg;
type T;
@@
T func(...,
- struct v4l2_subdev_pad_config *cfg
+ struct v4l2_subdev_state *sd_state
, ...);
// Change function return value
@@
identifier func;
@@
- struct v4l2_subdev_pad_config
+ struct v4l2_subdev_state
*func(...)
{
...
}
// Change function declaration return value
@@
identifier func;
@@
- struct v4l2_subdev_pad_config
+ struct v4l2_subdev_state
*func(...);
// Some drivers pass a local pad_cfg for a single pad to a called function. Wrap it
// inside a pad_state.
@@
identifier func;
identifier pad_cfg;
@@
func(...)
{
...
struct v4l2_subdev_pad_config pad_cfg;
+ struct v4l2_subdev_state pad_state = { .pads = &pad_cfg };
<+...
(
v4l2_subdev_call
|
sensor_call
|
isi_try_fse
|
isc_try_fse
|
saa_call_all
)
(...,
- &pad_cfg
+ &pad_state
,...)
...+>
}
// If the function uses fields from pad_config, access via state->pads
@@
identifier func;
identifier state;
@@
func(...,
struct v4l2_subdev_state *state
, ...)
{
<...
(
- state->try_fmt
+ state->pads->try_fmt
|
- state->try_crop
+ state->pads->try_crop
|
- state->try_compose
+ state->pads->try_compose
)
...>
}
// If the function accesses the filehandle, use fh->state instead
@@
struct v4l2_subdev_fh *fh;
@@
- fh->pad
+ fh->state
@@
struct v4l2_subdev_fh fh;
@@
- fh.pad
+ fh.state
// Start of vsp1 specific
@@
@@
struct vsp1_entity {
...
- struct v4l2_subdev_pad_config *config;
+ struct v4l2_subdev_state *config;
...
};
@@
symbol entity;
@@
vsp1_entity_init(...)
{
...
entity->config =
- v4l2_subdev_alloc_pad_config
+ v4l2_subdev_alloc_state
(&entity->subdev);
...
}
@@
symbol entity;
@@
vsp1_entity_destroy(...)
{
...
- v4l2_subdev_free_pad_config
+ v4l2_subdev_free_state
(entity->config);
...
}
@exists@
identifier func =~ "(^vsp1.*)|(hsit_set_format)|(sru_enum_frame_size)|(sru_set_format)|(uif_get_selection)|(uif_set_selection)|(uds_enum_frame_size)|(uds_set_format)|(brx_set_format)|(brx_get_selection)|(histo_get_selection)|(histo_set_selection)|(brx_set_selection)";
symbol config;
@@
func(...) {
...
- struct v4l2_subdev_pad_config *config;
+ struct v4l2_subdev_state *config;
...
}
// End of vsp1 specific
// Start of rcar specific
@@
identifier sd;
identifier pad_cfg;
@@
rvin_try_format(...)
{
...
- struct v4l2_subdev_pad_config *pad_cfg;
+ struct v4l2_subdev_state *sd_state;
...
- pad_cfg = v4l2_subdev_alloc_pad_config(sd);
+ sd_state = v4l2_subdev_alloc_state(sd);
<...
- pad_cfg
+ sd_state
...>
- v4l2_subdev_free_pad_config(pad_cfg);
+ v4l2_subdev_free_state(sd_state);
...
}
// End of rcar specific
// Start of rockchip specific
@@
identifier func =~ "(rkisp1_rsz_get_pad_fmt)|(rkisp1_rsz_get_pad_crop)|(rkisp1_rsz_register)";
symbol rsz;
symbol pad_cfg;
@@
func(...)
{
+ struct v4l2_subdev_state state = { .pads = rsz->pad_cfg };
...
- rsz->pad_cfg
+ &state
...
}
@@
identifier func =~ "(rkisp1_isp_get_pad_fmt)|(rkisp1_isp_get_pad_crop)";
symbol isp;
symbol pad_cfg;
@@
func(...)
{
+ struct v4l2_subdev_state state = { .pads = isp->pad_cfg };
...
- isp->pad_cfg
+ &state
...
}
@@
symbol rkisp1;
symbol isp;
symbol pad_cfg;
@@
rkisp1_isp_register(...)
{
+ struct v4l2_subdev_state state = { .pads = rkisp1->isp.pad_cfg };
...
- rkisp1->isp.pad_cfg
+ &state
...
}
// End of rockchip specific
// Start of tegra-video specific
@@
identifier sd;
identifier pad_cfg;
@@
__tegra_channel_try_format(...)
{
...
- struct v4l2_subdev_pad_config *pad_cfg;
+ struct v4l2_subdev_state *sd_state;
...
- pad_cfg = v4l2_subdev_alloc_pad_config(sd);
+ sd_state = v4l2_subdev_alloc_state(sd);
<...
- pad_cfg
+ sd_state
...>
- v4l2_subdev_free_pad_config(pad_cfg);
+ v4l2_subdev_free_state(sd_state);
...
}
@@
identifier sd_state;
@@
__tegra_channel_try_format(...)
{
...
struct v4l2_subdev_state *sd_state;
<...
- sd_state->try_crop
+ sd_state->pads->try_crop
...>
}
// End of tegra-video specific
// </smpl>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.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>
Diffstat (limited to 'drivers/media/platform/qcom/camss/camss-csid.c')
-rw-r--r-- | drivers/media/platform/qcom/camss/camss-csid.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c index 251f4c4afe19..a1637b78568b 100644 --- a/drivers/media/platform/qcom/camss/camss-csid.c +++ b/drivers/media/platform/qcom/camss/camss-csid.c @@ -245,12 +245,13 @@ static int csid_set_stream(struct v4l2_subdev *sd, int enable) */ static struct v4l2_mbus_framefmt * __csid_get_format(struct csid_device *csid, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, unsigned int pad, enum v4l2_subdev_format_whence which) { if (which == V4L2_SUBDEV_FORMAT_TRY) - return v4l2_subdev_get_try_format(&csid->subdev, cfg, pad); + return v4l2_subdev_get_try_format(&csid->subdev, sd_state, + pad); return &csid->fmt[pad]; } @@ -264,7 +265,7 @@ __csid_get_format(struct csid_device *csid, * @which: wanted subdev format */ static void csid_try_format(struct csid_device *csid, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, unsigned int pad, struct v4l2_mbus_framefmt *fmt, enum v4l2_subdev_format_whence which) @@ -297,7 +298,7 @@ static void csid_try_format(struct csid_device *csid, /* keep pad formats in sync */ u32 code = fmt->code; - *fmt = *__csid_get_format(csid, cfg, + *fmt = *__csid_get_format(csid, sd_state, MSM_CSID_PAD_SINK, which); fmt->code = csid->ops->src_pad_code(csid, fmt->code, 0, code); } else { @@ -331,7 +332,7 @@ static void csid_try_format(struct csid_device *csid, * return -EINVAL or zero on success */ static int csid_enum_mbus_code(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { struct csid_device *csid = v4l2_get_subdevdata(sd); @@ -345,7 +346,7 @@ static int csid_enum_mbus_code(struct v4l2_subdev *sd, if (csid->testgen_mode->cur.val == 0) { struct v4l2_mbus_framefmt *sink_fmt; - sink_fmt = __csid_get_format(csid, cfg, + sink_fmt = __csid_get_format(csid, sd_state, MSM_CSID_PAD_SINK, code->which); @@ -372,7 +373,7 @@ static int csid_enum_mbus_code(struct v4l2_subdev *sd, * return -EINVAL or zero on success */ static int csid_enum_frame_size(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse) { struct csid_device *csid = v4l2_get_subdevdata(sd); @@ -384,7 +385,7 @@ static int csid_enum_frame_size(struct v4l2_subdev *sd, format.code = fse->code; format.width = 1; format.height = 1; - csid_try_format(csid, cfg, fse->pad, &format, fse->which); + csid_try_format(csid, sd_state, fse->pad, &format, fse->which); fse->min_width = format.width; fse->min_height = format.height; @@ -394,7 +395,7 @@ static int csid_enum_frame_size(struct v4l2_subdev *sd, format.code = fse->code; format.width = -1; format.height = -1; - csid_try_format(csid, cfg, fse->pad, &format, fse->which); + csid_try_format(csid, sd_state, fse->pad, &format, fse->which); fse->max_width = format.width; fse->max_height = format.height; @@ -410,13 +411,13 @@ static int csid_enum_frame_size(struct v4l2_subdev *sd, * Return -EINVAL or zero on success */ static int csid_get_format(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct csid_device *csid = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format; - format = __csid_get_format(csid, cfg, fmt->pad, fmt->which); + format = __csid_get_format(csid, sd_state, fmt->pad, fmt->which); if (format == NULL) return -EINVAL; @@ -434,26 +435,26 @@ static int csid_get_format(struct v4l2_subdev *sd, * Return -EINVAL or zero on success */ static int csid_set_format(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct csid_device *csid = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format; - format = __csid_get_format(csid, cfg, fmt->pad, fmt->which); + format = __csid_get_format(csid, sd_state, fmt->pad, fmt->which); if (format == NULL) return -EINVAL; - csid_try_format(csid, cfg, fmt->pad, &fmt->format, fmt->which); + csid_try_format(csid, sd_state, fmt->pad, &fmt->format, fmt->which); *format = fmt->format; /* Propagate the format from sink to source */ if (fmt->pad == MSM_CSID_PAD_SINK) { - format = __csid_get_format(csid, cfg, MSM_CSID_PAD_SRC, + format = __csid_get_format(csid, sd_state, MSM_CSID_PAD_SRC, fmt->which); *format = fmt->format; - csid_try_format(csid, cfg, MSM_CSID_PAD_SRC, format, + csid_try_format(csid, sd_state, MSM_CSID_PAD_SRC, format, fmt->which); } @@ -482,7 +483,7 @@ static int csid_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) } }; - return csid_set_format(sd, fh ? fh->pad : NULL, &format); + return csid_set_format(sd, fh ? fh->state : NULL, &format); } /* |