Instead of validating the links to capture devices and subdevices with
the same function, use the default v4l function for links between
subdevices and only use a different function for validating between
capture device and subdevice.
This change should also ease future work to associate multiple mbus
codes for the same pixelformat in vimc_pix_map.
These changes were tested with
v4l2-compliance SHA: 3f806630e2ecbcebe31872b865c5c4b42f111a99, 64 bits
and passed all tests:
Grand Total for vimc device /dev/media0: 451, Succeeded: 451, Failed: 0, Warnings: 0
Signed-off-by: Nícolas F. R. A. Prado <[email protected]>
---
drivers/media/platform/vimc/vimc-capture.c | 78 +++++++++++++++-
drivers/media/platform/vimc/vimc-common.c | 103 ++++-----------------
drivers/media/platform/vimc/vimc-common.h | 3 +
3 files changed, 96 insertions(+), 88 deletions(-)
diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
index 602f80323031..924b99f82123 100644
--- a/drivers/media/platform/vimc/vimc-capture.c
+++ b/drivers/media/platform/vimc/vimc-capture.c
@@ -321,8 +321,84 @@ static const struct vb2_ops vimc_cap_qops = {
.wait_finish = vb2_ops_wait_finish,
};
+int vimc_cap_link_validate(struct media_link *link)
+{
+ struct v4l2_pix_format source_fmt, sink_fmt;
+ int ret;
+
+ ret = vimc_get_pix_format(link->source, &source_fmt);
+ if (ret)
+ return ret;
+
+ ret = vimc_get_pix_format(link->sink, &sink_fmt);
+ if (ret)
+ return ret;
+
+ pr_info("vimc link validate: "
+ "%s:src:%dx%d (0x%x, %d, %d, %d, %d) "
+ "%s:snk:%dx%d (0x%x, %d, %d, %d, %d)\n",
+ /* src */
+ link->source->entity->name,
+ source_fmt.width, source_fmt.height,
+ source_fmt.pixelformat, source_fmt.colorspace,
+ source_fmt.quantization, source_fmt.xfer_func,
+ source_fmt.ycbcr_enc,
+ /* sink */
+ link->sink->entity->name,
+ sink_fmt.width, sink_fmt.height,
+ sink_fmt.pixelformat, sink_fmt.colorspace,
+ sink_fmt.quantization, sink_fmt.xfer_func,
+ sink_fmt.ycbcr_enc);
+
+ /* The width, height and pixelformat must match. */
+ if (source_fmt.width != sink_fmt.width
+ || source_fmt.height != sink_fmt.height
+ || source_fmt.pixelformat != sink_fmt.pixelformat)
+ return -EPIPE;
+
+ /*
+ * The field order must match, or the sink field order must be NONE
+ * to support interlaced hardware connected to bridges that support
+ * progressive formats only.
+ */
+ if (source_fmt.field != sink_fmt.field &&
+ sink_fmt.field != V4L2_FIELD_NONE)
+ return -EPIPE;
+
+ /*
+ * If colorspace is DEFAULT, then assume all the colorimetry is also
+ * DEFAULT, return 0 to skip comparing the other colorimetry parameters
+ */
+ if (source_fmt.colorspace == V4L2_COLORSPACE_DEFAULT
+ || sink_fmt.colorspace == V4L2_COLORSPACE_DEFAULT)
+ return 0;
+
+ /* Colorspace must match. */
+ if (source_fmt.colorspace != sink_fmt.colorspace)
+ return -EPIPE;
+
+ /* Colorimetry must match if they are not set to DEFAULT */
+ if (source_fmt.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
+ && sink_fmt.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
+ && source_fmt.ycbcr_enc != sink_fmt.ycbcr_enc)
+ return -EPIPE;
+
+ if (source_fmt.quantization != V4L2_QUANTIZATION_DEFAULT
+ && sink_fmt.quantization != V4L2_QUANTIZATION_DEFAULT
+ && source_fmt.quantization != sink_fmt.quantization)
+ return -EPIPE;
+
+ if (source_fmt.xfer_func != V4L2_XFER_FUNC_DEFAULT
+ && sink_fmt.xfer_func != V4L2_XFER_FUNC_DEFAULT
+ && source_fmt.xfer_func != sink_fmt.xfer_func)
+ return -EPIPE;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(vimc_cap_link_validate);
+
static const struct media_entity_operations vimc_cap_mops = {
- .link_validate = vimc_link_validate,
+ .link_validate = vimc_cap_link_validate,
};
static void vimc_cap_release(struct video_device *vdev)
diff --git a/drivers/media/platform/vimc/vimc-common.c b/drivers/media/platform/vimc/vimc-common.c
index a3120f4f7a90..fe91d67811e5 100644
--- a/drivers/media/platform/vimc/vimc-common.c
+++ b/drivers/media/platform/vimc/vimc-common.c
@@ -247,35 +247,40 @@ int vimc_pipeline_s_stream(struct media_entity *ent, int enable)
}
EXPORT_SYMBOL_GPL(vimc_pipeline_s_stream);
-static int vimc_get_mbus_format(struct media_pad *pad,
- struct v4l2_subdev_format *fmt)
+int vimc_get_pix_format(struct media_pad *pad,
+ struct v4l2_pix_format *fmt)
{
if (is_media_entity_v4l2_subdev(pad->entity)) {
struct v4l2_subdev *sd =
media_entity_to_v4l2_subdev(pad->entity);
+ struct v4l2_subdev_format sd_fmt;
+ const struct vimc_pix_map *pix_map;
int ret;
- fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
- fmt->pad = pad->index;
+ sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ sd_fmt.pad = pad->index;
+
+ ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sd_fmt);
- ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt);
if (ret)
return ret;
+ v4l2_fill_pix_format(fmt, &sd_fmt.format);
+
+ pix_map = vimc_pix_map_by_code(sd_fmt.format.code);
+ fmt->pixelformat = pix_map->pixelformat;
+
} else if (is_media_entity_v4l2_video_device(pad->entity)) {
struct video_device *vdev = container_of(pad->entity,
struct video_device,
entity);
struct vimc_ent_device *ved = video_get_drvdata(vdev);
- const struct vimc_pix_map *vpix;
- struct v4l2_pix_format vdev_fmt;
if (!ved->vdev_get_format)
return -ENOIOCTLCMD;
- ved->vdev_get_format(ved, &vdev_fmt);
- vpix = vimc_pix_map_by_pixelformat(vdev_fmt.pixelformat);
- v4l2_fill_mbus_format(&fmt->format, &vdev_fmt, vpix->code);
+ ved->vdev_get_format(ved, fmt);
+
} else {
return -EINVAL;
}
@@ -283,84 +288,8 @@ static int vimc_get_mbus_format(struct media_pad *pad,
return 0;
}
-int vimc_link_validate(struct media_link *link)
-{
- struct v4l2_subdev_format source_fmt, sink_fmt;
- int ret;
-
- ret = vimc_get_mbus_format(link->source, &source_fmt);
- if (ret)
- return ret;
-
- ret = vimc_get_mbus_format(link->sink, &sink_fmt);
- if (ret)
- return ret;
-
- pr_info("vimc link validate: "
- "%s:src:%dx%d (0x%x, %d, %d, %d, %d) "
- "%s:snk:%dx%d (0x%x, %d, %d, %d, %d)\n",
- /* src */
- link->source->entity->name,
- source_fmt.format.width, source_fmt.format.height,
- source_fmt.format.code, source_fmt.format.colorspace,
- source_fmt.format.quantization, source_fmt.format.xfer_func,
- source_fmt.format.ycbcr_enc,
- /* sink */
- link->sink->entity->name,
- sink_fmt.format.width, sink_fmt.format.height,
- sink_fmt.format.code, sink_fmt.format.colorspace,
- sink_fmt.format.quantization, sink_fmt.format.xfer_func,
- sink_fmt.format.ycbcr_enc);
-
- /* The width, height and code must match. */
- if (source_fmt.format.width != sink_fmt.format.width
- || source_fmt.format.height != sink_fmt.format.height
- || source_fmt.format.code != sink_fmt.format.code)
- return -EPIPE;
-
- /*
- * The field order must match, or the sink field order must be NONE
- * to support interlaced hardware connected to bridges that support
- * progressive formats only.
- */
- if (source_fmt.format.field != sink_fmt.format.field &&
- sink_fmt.format.field != V4L2_FIELD_NONE)
- return -EPIPE;
-
- /*
- * If colorspace is DEFAULT, then assume all the colorimetry is also
- * DEFAULT, return 0 to skip comparing the other colorimetry parameters
- */
- if (source_fmt.format.colorspace == V4L2_COLORSPACE_DEFAULT
- || sink_fmt.format.colorspace == V4L2_COLORSPACE_DEFAULT)
- return 0;
-
- /* Colorspace must match. */
- if (source_fmt.format.colorspace != sink_fmt.format.colorspace)
- return -EPIPE;
-
- /* Colorimetry must match if they are not set to DEFAULT */
- if (source_fmt.format.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
- && sink_fmt.format.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
- && source_fmt.format.ycbcr_enc != sink_fmt.format.ycbcr_enc)
- return -EPIPE;
-
- if (source_fmt.format.quantization != V4L2_QUANTIZATION_DEFAULT
- && sink_fmt.format.quantization != V4L2_QUANTIZATION_DEFAULT
- && source_fmt.format.quantization != sink_fmt.format.quantization)
- return -EPIPE;
-
- if (source_fmt.format.xfer_func != V4L2_XFER_FUNC_DEFAULT
- && sink_fmt.format.xfer_func != V4L2_XFER_FUNC_DEFAULT
- && source_fmt.format.xfer_func != sink_fmt.format.xfer_func)
- return -EPIPE;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(vimc_link_validate);
-
static const struct media_entity_operations vimc_ent_sd_mops = {
- .link_validate = vimc_link_validate,
+ .link_validate = v4l2_subdev_link_validate,
};
int vimc_ent_sd_register(struct vimc_ent_device *ved,
diff --git a/drivers/media/platform/vimc/vimc-common.h b/drivers/media/platform/vimc/vimc-common.h
index 698db7c07645..8a4310430292 100644
--- a/drivers/media/platform/vimc/vimc-common.h
+++ b/drivers/media/platform/vimc/vimc-common.h
@@ -263,6 +263,9 @@ int vimc_ent_sd_register(struct vimc_ent_device *ved,
void vimc_ent_sd_unregister(struct vimc_ent_device *ved,
struct v4l2_subdev *sd);
+
+int vimc_get_pix_format(struct media_pad *pad, struct v4l2_pix_format *fmt);
+
/**
* vimc_link_validate - validates a media link
*
--
2.23.0
Hi Nícolas,
Thanks for you patch, just some small comments below.
On 10/6/19 4:14 PM, Nícolas F. R. A. Prado wrote:
> Instead of validating the links to capture devices and subdevices with
> the same function, use the default v4l function for links between
> subdevices and only use a different function for validating between
> capture device and subdevice.
> This change should also ease future work to associate multiple mbus
> codes for the same pixelformat in vimc_pix_map.
>
> These changes were tested with
> v4l2-compliance SHA: 3f806630e2ecbcebe31872b865c5c4b42f111a99, 64 bits
> and passed all tests:
> Grand Total for vimc device /dev/media0: 451, Succeeded: 451, Failed: 0, Warnings: 0
>
> Signed-off-by: Nícolas F. R. A. Prado <[email protected]>
> ---
> drivers/media/platform/vimc/vimc-capture.c | 78 +++++++++++++++-
> drivers/media/platform/vimc/vimc-common.c | 103 ++++-----------------
> drivers/media/platform/vimc/vimc-common.h | 3 +
> 3 files changed, 96 insertions(+), 88 deletions(-)
>
> diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
> index 602f80323031..924b99f82123 100644
> --- a/drivers/media/platform/vimc/vimc-capture.c
> +++ b/drivers/media/platform/vimc/vimc-capture.c
> @@ -321,8 +321,84 @@ static const struct vb2_ops vimc_cap_qops = {
> .wait_finish = vb2_ops_wait_finish,
> };
>
> +int vimc_cap_link_validate(struct media_link *link)
This function is only used inside the capture, it could be static.
Unless if you want to make it a generic function in vimc-common.h, so the future
output device could use it as well, but it can be done in the output patch.
> +{
> + struct v4l2_pix_format source_fmt, sink_fmt;
> + int ret;
> +
> + ret = vimc_get_pix_format(link->source, &source_fmt);
> + if (ret)
> + return ret;
> +
> + ret = vimc_get_pix_format(link->sink, &sink_fmt);
> + if (ret)
> + return ret;
> +
> + pr_info("vimc link validate: "
> + "%s:src:%dx%d (0x%x, %d, %d, %d, %d) "
> + "%s:snk:%dx%d (0x%x, %d, %d, %d, %d)\n",
> + /* src */
> + link->source->entity->name,
> + source_fmt.width, source_fmt.height,
> + source_fmt.pixelformat, source_fmt.colorspace,
> + source_fmt.quantization, source_fmt.xfer_func,
> + source_fmt.ycbcr_enc,
> + /* sink */
> + link->sink->entity->name,
> + sink_fmt.width, sink_fmt.height,
> + sink_fmt.pixelformat, sink_fmt.colorspace,
> + sink_fmt.quantization, sink_fmt.xfer_func,
> + sink_fmt.ycbcr_enc);
> +
> + /* The width, height and pixelformat must match. */
> + if (source_fmt.width != sink_fmt.width
> + || source_fmt.height != sink_fmt.height
> + || source_fmt.pixelformat != sink_fmt.pixelformat)
> + return -EPIPE;
> +
> + /*
> + * The field order must match, or the sink field order must be NONE
> + * to support interlaced hardware connected to bridges that support
> + * progressive formats only.
> + */
> + if (source_fmt.field != sink_fmt.field &&
> + sink_fmt.field != V4L2_FIELD_NONE)
> + return -EPIPE;
> +
> + /*
> + * If colorspace is DEFAULT, then assume all the colorimetry is also
> + * DEFAULT, return 0 to skip comparing the other colorimetry parameters
> + */
> + if (source_fmt.colorspace == V4L2_COLORSPACE_DEFAULT
> + || sink_fmt.colorspace == V4L2_COLORSPACE_DEFAULT)
> + return 0;
> +
> + /* Colorspace must match. */
> + if (source_fmt.colorspace != sink_fmt.colorspace)
> + return -EPIPE;
> +
> + /* Colorimetry must match if they are not set to DEFAULT */
> + if (source_fmt.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
> + && sink_fmt.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
> + && source_fmt.ycbcr_enc != sink_fmt.ycbcr_enc)
> + return -EPIPE;
> +
> + if (source_fmt.quantization != V4L2_QUANTIZATION_DEFAULT
> + && sink_fmt.quantization != V4L2_QUANTIZATION_DEFAULT
> + && source_fmt.quantization != sink_fmt.quantization)
> + return -EPIPE;
> +
> + if (source_fmt.xfer_func != V4L2_XFER_FUNC_DEFAULT
> + && sink_fmt.xfer_func != V4L2_XFER_FUNC_DEFAULT
> + && source_fmt.xfer_func != sink_fmt.xfer_func)
> + return -EPIPE;
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(vimc_cap_link_validate);
No need to export it here.
> +
> static const struct media_entity_operations vimc_cap_mops = {
> - .link_validate = vimc_link_validate,
> + .link_validate = vimc_cap_link_validate,
> };
>
> static void vimc_cap_release(struct video_device *vdev)
> diff --git a/drivers/media/platform/vimc/vimc-common.c b/drivers/media/platform/vimc/vimc-common.c
> index a3120f4f7a90..fe91d67811e5 100644
> --- a/drivers/media/platform/vimc/vimc-common.c
> +++ b/drivers/media/platform/vimc/vimc-common.c
> @@ -247,35 +247,40 @@ int vimc_pipeline_s_stream(struct media_entity *ent, int enable)
> }
> EXPORT_SYMBOL_GPL(vimc_pipeline_s_stream);
>
> -static int vimc_get_mbus_format(struct media_pad *pad,
> - struct v4l2_subdev_format *fmt)
> +int vimc_get_pix_format(struct media_pad *pad,
> + struct v4l2_pix_format *fmt)
Could you align the arguments please?
> {
> if (is_media_entity_v4l2_subdev(pad->entity)) {
> struct v4l2_subdev *sd =
> media_entity_to_v4l2_subdev(pad->entity);
> + struct v4l2_subdev_format sd_fmt;
> + const struct vimc_pix_map *pix_map;
> int ret;
>
> - fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
> - fmt->pad = pad->index;
> + sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
> + sd_fmt.pad = pad->index;
> +
> + ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sd_fmt);
>
Please remove this blank line, so that the error check follows the function.
> - ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt);
> if (ret)
> return ret;
>
> + v4l2_fill_pix_format(fmt, &sd_fmt.format);
> +
No need for this blank line.
> + pix_map = vimc_pix_map_by_code(sd_fmt.format.code);
> + fmt->pixelformat = pix_map->pixelformat;
> +
Could you also remove this blank like?
> } else if (is_media_entity_v4l2_video_device(pad->entity)) {
> struct video_device *vdev = container_of(pad->entity,
> struct video_device,
> entity);
> struct vimc_ent_device *ved = video_get_drvdata(vdev);
> - const struct vimc_pix_map *vpix;
> - struct v4l2_pix_format vdev_fmt;
>
> if (!ved->vdev_get_format)
> return -ENOIOCTLCMD;
>
> - ved->vdev_get_format(ved, &vdev_fmt);
> - vpix = vimc_pix_map_by_pixelformat(vdev_fmt.pixelformat);
> - v4l2_fill_mbus_format(&fmt->format, &vdev_fmt, vpix->code);
> + ved->vdev_get_format(ved, fmt);
> +
And this one too.
> } else {
> return -EINVAL;
> }
> @@ -283,84 +288,8 @@ static int vimc_get_mbus_format(struct media_pad *pad,
> return 0;
> }
>
> -int vimc_link_validate(struct media_link *link)
> -{
> - struct v4l2_subdev_format source_fmt, sink_fmt;
> - int ret;
> -
> - ret = vimc_get_mbus_format(link->source, &source_fmt);
> - if (ret)
> - return ret;
> -
> - ret = vimc_get_mbus_format(link->sink, &sink_fmt);
> - if (ret)
> - return ret;
> -
> - pr_info("vimc link validate: "
> - "%s:src:%dx%d (0x%x, %d, %d, %d, %d) "
> - "%s:snk:%dx%d (0x%x, %d, %d, %d, %d)\n",
> - /* src */
> - link->source->entity->name,
> - source_fmt.format.width, source_fmt.format.height,
> - source_fmt.format.code, source_fmt.format.colorspace,
> - source_fmt.format.quantization, source_fmt.format.xfer_func,
> - source_fmt.format.ycbcr_enc,
> - /* sink */
> - link->sink->entity->name,
> - sink_fmt.format.width, sink_fmt.format.height,
> - sink_fmt.format.code, sink_fmt.format.colorspace,
> - sink_fmt.format.quantization, sink_fmt.format.xfer_func,
> - sink_fmt.format.ycbcr_enc);
> -
> - /* The width, height and code must match. */
> - if (source_fmt.format.width != sink_fmt.format.width
> - || source_fmt.format.height != sink_fmt.format.height
> - || source_fmt.format.code != sink_fmt.format.code)
> - return -EPIPE;
> -
> - /*
> - * The field order must match, or the sink field order must be NONE
> - * to support interlaced hardware connected to bridges that support
> - * progressive formats only.
> - */
> - if (source_fmt.format.field != sink_fmt.format.field &&
> - sink_fmt.format.field != V4L2_FIELD_NONE)
> - return -EPIPE;
> -
> - /*
> - * If colorspace is DEFAULT, then assume all the colorimetry is also
> - * DEFAULT, return 0 to skip comparing the other colorimetry parameters
> - */
> - if (source_fmt.format.colorspace == V4L2_COLORSPACE_DEFAULT
> - || sink_fmt.format.colorspace == V4L2_COLORSPACE_DEFAULT)
> - return 0;
> -
> - /* Colorspace must match. */
> - if (source_fmt.format.colorspace != sink_fmt.format.colorspace)
> - return -EPIPE;
> -
> - /* Colorimetry must match if they are not set to DEFAULT */
> - if (source_fmt.format.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
> - && sink_fmt.format.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
> - && source_fmt.format.ycbcr_enc != sink_fmt.format.ycbcr_enc)
> - return -EPIPE;
> -
> - if (source_fmt.format.quantization != V4L2_QUANTIZATION_DEFAULT
> - && sink_fmt.format.quantization != V4L2_QUANTIZATION_DEFAULT
> - && source_fmt.format.quantization != sink_fmt.format.quantization)
> - return -EPIPE;
> -
> - if (source_fmt.format.xfer_func != V4L2_XFER_FUNC_DEFAULT
> - && sink_fmt.format.xfer_func != V4L2_XFER_FUNC_DEFAULT
> - && source_fmt.format.xfer_func != sink_fmt.format.xfer_func)
> - return -EPIPE;
> -
> - return 0;
> -}
> -EXPORT_SYMBOL_GPL(vimc_link_validate);
> -
> static const struct media_entity_operations vimc_ent_sd_mops = {
> - .link_validate = vimc_link_validate,
> + .link_validate = v4l2_subdev_link_validate,
> };
>
> int vimc_ent_sd_register(struct vimc_ent_device *ved,
> diff --git a/drivers/media/platform/vimc/vimc-common.h b/drivers/media/platform/vimc/vimc-common.h
> index 698db7c07645..8a4310430292 100644
> --- a/drivers/media/platform/vimc/vimc-common.h
> +++ b/drivers/media/platform/vimc/vimc-common.h
> @@ -263,6 +263,9 @@ int vimc_ent_sd_register(struct vimc_ent_device *ved,
> void vimc_ent_sd_unregister(struct vimc_ent_device *ved,
> struct v4l2_subdev *sd);
>
> +
> +int vimc_get_pix_format(struct media_pad *pad, struct v4l2_pix_format *fmt);
> +
You don't need this if you make the function static.
> /**
> * vimc_link_validate - validates a media link
> *
>
Thanks!
Helen
On 10/6/19 9:42 PM, Helen Koike wrote:
> Hi Nícolas,
>
> Thanks for you patch, just some small comments below.
>
> On 10/6/19 4:14 PM, Nícolas F. R. A. Prado wrote:
>> Instead of validating the links to capture devices and subdevices with
>> the same function, use the default v4l function for links between
>> subdevices and only use a different function for validating between
>> capture device and subdevice.
>> This change should also ease future work to associate multiple mbus
>> codes for the same pixelformat in vimc_pix_map.
>>
>> These changes were tested with
>> v4l2-compliance SHA: 3f806630e2ecbcebe31872b865c5c4b42f111a99, 64 bits
>> and passed all tests:
>> Grand Total for vimc device /dev/media0: 451, Succeeded: 451, Failed: 0, Warnings: 0
>>
>> Signed-off-by: Nícolas F. R. A. Prado <[email protected]>
>> ---
>> drivers/media/platform/vimc/vimc-capture.c | 78 +++++++++++++++-
>> drivers/media/platform/vimc/vimc-common.c | 103 ++++-----------------
>> drivers/media/platform/vimc/vimc-common.h | 3 +
>> 3 files changed, 96 insertions(+), 88 deletions(-)
>>
>> diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
>> index 602f80323031..924b99f82123 100644
>> --- a/drivers/media/platform/vimc/vimc-capture.c
>> +++ b/drivers/media/platform/vimc/vimc-capture.c
>> @@ -321,8 +321,84 @@ static const struct vb2_ops vimc_cap_qops = {
>> .wait_finish = vb2_ops_wait_finish,
>> };
>>
>> +int vimc_cap_link_validate(struct media_link *link)
>
> This function is only used inside the capture, it could be static.
Actually, I was thinking that it is maybe better to leave this function in
vimc-common and rename it to vimc_vdev_link_validate(), as it is generic
to any video_device, and we also avoid to moving it to from vimc-common to
vimc-cap and back to vimc-common again if we add other video devices.
Regards,
Helen
>
> Unless if you want to make it a generic function in vimc-common.h, so the future
> output device could use it as well, but it can be done in the output patch.
>
>
>> +{
>> + struct v4l2_pix_format source_fmt, sink_fmt;
>> + int ret;
>> +
>> + ret = vimc_get_pix_format(link->source, &source_fmt);
>> + if (ret)
>> + return ret;
>> +
>> + ret = vimc_get_pix_format(link->sink, &sink_fmt);
>> + if (ret)
>> + return ret;
>> +
>> + pr_info("vimc link validate: "
>> + "%s:src:%dx%d (0x%x, %d, %d, %d, %d) "
>> + "%s:snk:%dx%d (0x%x, %d, %d, %d, %d)\n",
>> + /* src */
>> + link->source->entity->name,
>> + source_fmt.width, source_fmt.height,
>> + source_fmt.pixelformat, source_fmt.colorspace,
>> + source_fmt.quantization, source_fmt.xfer_func,
>> + source_fmt.ycbcr_enc,
>> + /* sink */
>> + link->sink->entity->name,
>> + sink_fmt.width, sink_fmt.height,
>> + sink_fmt.pixelformat, sink_fmt.colorspace,
>> + sink_fmt.quantization, sink_fmt.xfer_func,
>> + sink_fmt.ycbcr_enc);
>> +
>> + /* The width, height and pixelformat must match. */
>> + if (source_fmt.width != sink_fmt.width
>> + || source_fmt.height != sink_fmt.height
>> + || source_fmt.pixelformat != sink_fmt.pixelformat)
>> + return -EPIPE;
>> +
>> + /*
>> + * The field order must match, or the sink field order must be NONE
>> + * to support interlaced hardware connected to bridges that support
>> + * progressive formats only.
>> + */
>> + if (source_fmt.field != sink_fmt.field &&
>> + sink_fmt.field != V4L2_FIELD_NONE)
>> + return -EPIPE;
>> +
>> + /*
>> + * If colorspace is DEFAULT, then assume all the colorimetry is also
>> + * DEFAULT, return 0 to skip comparing the other colorimetry parameters
>> + */
>> + if (source_fmt.colorspace == V4L2_COLORSPACE_DEFAULT
>> + || sink_fmt.colorspace == V4L2_COLORSPACE_DEFAULT)
>> + return 0;
>> +
>> + /* Colorspace must match. */
>> + if (source_fmt.colorspace != sink_fmt.colorspace)
>> + return -EPIPE;
>> +
>> + /* Colorimetry must match if they are not set to DEFAULT */
>> + if (source_fmt.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
>> + && sink_fmt.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
>> + && source_fmt.ycbcr_enc != sink_fmt.ycbcr_enc)
>> + return -EPIPE;
>> +
>> + if (source_fmt.quantization != V4L2_QUANTIZATION_DEFAULT
>> + && sink_fmt.quantization != V4L2_QUANTIZATION_DEFAULT
>> + && source_fmt.quantization != sink_fmt.quantization)
>> + return -EPIPE;
>> +
>> + if (source_fmt.xfer_func != V4L2_XFER_FUNC_DEFAULT
>> + && sink_fmt.xfer_func != V4L2_XFER_FUNC_DEFAULT
>> + && source_fmt.xfer_func != sink_fmt.xfer_func)
>> + return -EPIPE;
>> +
>> + return 0;
>> +}
>> +EXPORT_SYMBOL_GPL(vimc_cap_link_validate);
>
> No need to export it here.
>
>> +
>> static const struct media_entity_operations vimc_cap_mops = {
>> - .link_validate = vimc_link_validate,
>> + .link_validate = vimc_cap_link_validate,
>> };
>>
>> static void vimc_cap_release(struct video_device *vdev)
>> diff --git a/drivers/media/platform/vimc/vimc-common.c b/drivers/media/platform/vimc/vimc-common.c
>> index a3120f4f7a90..fe91d67811e5 100644
>> --- a/drivers/media/platform/vimc/vimc-common.c
>> +++ b/drivers/media/platform/vimc/vimc-common.c
>> @@ -247,35 +247,40 @@ int vimc_pipeline_s_stream(struct media_entity *ent, int enable)
>> }
>> EXPORT_SYMBOL_GPL(vimc_pipeline_s_stream);
>>
>> -static int vimc_get_mbus_format(struct media_pad *pad,
>> - struct v4l2_subdev_format *fmt)
>> +int vimc_get_pix_format(struct media_pad *pad,
>> + struct v4l2_pix_format *fmt)
>
> Could you align the arguments please?
>
>> {
>> if (is_media_entity_v4l2_subdev(pad->entity)) {
>> struct v4l2_subdev *sd =
>> media_entity_to_v4l2_subdev(pad->entity);
>> + struct v4l2_subdev_format sd_fmt;
>> + const struct vimc_pix_map *pix_map;
>> int ret;
>>
>> - fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
>> - fmt->pad = pad->index;
>> + sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
>> + sd_fmt.pad = pad->index;
>> +
>> + ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sd_fmt);
>>
>
> Please remove this blank line, so that the error check follows the function.
>
>> - ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt);
>> if (ret)
>> return ret;
>>
>> + v4l2_fill_pix_format(fmt, &sd_fmt.format);
>> +
>
> No need for this blank line.
>
>> + pix_map = vimc_pix_map_by_code(sd_fmt.format.code);
>> + fmt->pixelformat = pix_map->pixelformat;
>> +
>
> Could you also remove this blank like?
>
>> } else if (is_media_entity_v4l2_video_device(pad->entity)) {
>> struct video_device *vdev = container_of(pad->entity,
>> struct video_device,
>> entity);
>> struct vimc_ent_device *ved = video_get_drvdata(vdev);
>> - const struct vimc_pix_map *vpix;
>> - struct v4l2_pix_format vdev_fmt;
>>
>> if (!ved->vdev_get_format)
>> return -ENOIOCTLCMD;
>>
>> - ved->vdev_get_format(ved, &vdev_fmt);
>> - vpix = vimc_pix_map_by_pixelformat(vdev_fmt.pixelformat);
>> - v4l2_fill_mbus_format(&fmt->format, &vdev_fmt, vpix->code);
>> + ved->vdev_get_format(ved, fmt);
>> +
>
> And this one too.
>
>> } else {
>> return -EINVAL;
>> }
>> @@ -283,84 +288,8 @@ static int vimc_get_mbus_format(struct media_pad *pad,
>> return 0;
>> }
>>
>> -int vimc_link_validate(struct media_link *link)
>> -{
>> - struct v4l2_subdev_format source_fmt, sink_fmt;
>> - int ret;
>> -
>> - ret = vimc_get_mbus_format(link->source, &source_fmt);
>> - if (ret)
>> - return ret;
>> -
>> - ret = vimc_get_mbus_format(link->sink, &sink_fmt);
>> - if (ret)
>> - return ret;
>> -
>> - pr_info("vimc link validate: "
>> - "%s:src:%dx%d (0x%x, %d, %d, %d, %d) "
>> - "%s:snk:%dx%d (0x%x, %d, %d, %d, %d)\n",
>> - /* src */
>> - link->source->entity->name,
>> - source_fmt.format.width, source_fmt.format.height,
>> - source_fmt.format.code, source_fmt.format.colorspace,
>> - source_fmt.format.quantization, source_fmt.format.xfer_func,
>> - source_fmt.format.ycbcr_enc,
>> - /* sink */
>> - link->sink->entity->name,
>> - sink_fmt.format.width, sink_fmt.format.height,
>> - sink_fmt.format.code, sink_fmt.format.colorspace,
>> - sink_fmt.format.quantization, sink_fmt.format.xfer_func,
>> - sink_fmt.format.ycbcr_enc);
>> -
>> - /* The width, height and code must match. */
>> - if (source_fmt.format.width != sink_fmt.format.width
>> - || source_fmt.format.height != sink_fmt.format.height
>> - || source_fmt.format.code != sink_fmt.format.code)
>> - return -EPIPE;
>> -
>> - /*
>> - * The field order must match, or the sink field order must be NONE
>> - * to support interlaced hardware connected to bridges that support
>> - * progressive formats only.
>> - */
>> - if (source_fmt.format.field != sink_fmt.format.field &&
>> - sink_fmt.format.field != V4L2_FIELD_NONE)
>> - return -EPIPE;
>> -
>> - /*
>> - * If colorspace is DEFAULT, then assume all the colorimetry is also
>> - * DEFAULT, return 0 to skip comparing the other colorimetry parameters
>> - */
>> - if (source_fmt.format.colorspace == V4L2_COLORSPACE_DEFAULT
>> - || sink_fmt.format.colorspace == V4L2_COLORSPACE_DEFAULT)
>> - return 0;
>> -
>> - /* Colorspace must match. */
>> - if (source_fmt.format.colorspace != sink_fmt.format.colorspace)
>> - return -EPIPE;
>> -
>> - /* Colorimetry must match if they are not set to DEFAULT */
>> - if (source_fmt.format.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
>> - && sink_fmt.format.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
>> - && source_fmt.format.ycbcr_enc != sink_fmt.format.ycbcr_enc)
>> - return -EPIPE;
>> -
>> - if (source_fmt.format.quantization != V4L2_QUANTIZATION_DEFAULT
>> - && sink_fmt.format.quantization != V4L2_QUANTIZATION_DEFAULT
>> - && source_fmt.format.quantization != sink_fmt.format.quantization)
>> - return -EPIPE;
>> -
>> - if (source_fmt.format.xfer_func != V4L2_XFER_FUNC_DEFAULT
>> - && sink_fmt.format.xfer_func != V4L2_XFER_FUNC_DEFAULT
>> - && source_fmt.format.xfer_func != sink_fmt.format.xfer_func)
>> - return -EPIPE;
>> -
>> - return 0;
>> -}
>> -EXPORT_SYMBOL_GPL(vimc_link_validate);
>> -
>> static const struct media_entity_operations vimc_ent_sd_mops = {
>> - .link_validate = vimc_link_validate,
>> + .link_validate = v4l2_subdev_link_validate,
>> };
>>
>> int vimc_ent_sd_register(struct vimc_ent_device *ved,
>> diff --git a/drivers/media/platform/vimc/vimc-common.h b/drivers/media/platform/vimc/vimc-common.h
>> index 698db7c07645..8a4310430292 100644
>> --- a/drivers/media/platform/vimc/vimc-common.h
>> +++ b/drivers/media/platform/vimc/vimc-common.h
>> @@ -263,6 +263,9 @@ int vimc_ent_sd_register(struct vimc_ent_device *ved,
>> void vimc_ent_sd_unregister(struct vimc_ent_device *ved,
>> struct v4l2_subdev *sd);
>>
>> +
>> +int vimc_get_pix_format(struct media_pad *pad, struct v4l2_pix_format *fmt);
>> +
>
> You don't need this if you make the function static.
>
>> /**
>> * vimc_link_validate - validates a media link
>> *
>>
>
>
> Thanks!
> Helen
>