[PATCH v6 38/39] media: imx-ic-prpencvf: add frame size enumeration
From: Steve Longerbeam <hidden>
Date: 2017-03-28 00:43:07
Also in:
linux-arm-kernel, linux-media, lkml
Subsystem:
media drivers for freescale imx, media input infrastructure (v4l/dvb), staging subsystem, the rest · Maintainers:
Steve Longerbeam, Philipp Zabel, Mauro Carvalho Chehab, Greg Kroah-Hartman, Linus Torvalds
Add frame size enumeration operation. The PRP ENC/VF subdevices are scalers, so they can output a continuous range of widths/ heights on their source pads. Signed-off-by: Steve Longerbeam <redacted> --- drivers/staging/media/imx/imx-ic-prpencvf.c | 40 +++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+)
diff --git a/drivers/staging/media/imx/imx-ic-prpencvf.c b/drivers/staging/media/imx/imx-ic-prpencvf.c
index 4123b03..860b406 100644
--- a/drivers/staging/media/imx/imx-ic-prpencvf.c
+++ b/drivers/staging/media/imx/imx-ic-prpencvf.c@@ -875,6 +875,45 @@ static int prp_set_fmt(struct v4l2_subdev *sd, return ret; } +static int prp_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_size_enum *fse) +{ + struct prp_priv *priv = sd_to_priv(sd); + struct v4l2_subdev_format format = {0}; + const struct imx_media_pixfmt *cc; + int ret = 0; + + if (fse->pad >= PRPENCVF_NUM_PADS || fse->index != 0) + return -EINVAL; + + mutex_lock(&priv->lock); + + format.pad = fse->pad; + format.which = fse->which; + format.format.code = fse->code; + format.format.width = 1; + format.format.height = 1; + prp_try_fmt(priv, cfg, &format, &cc); + fse->min_width = format.format.width; + fse->min_height = format.format.height; + + if (format.format.code != fse->code) { + ret = -EINVAL; + goto out; + } + + format.format.code = fse->code; + format.format.width = -1; + format.format.height = -1; + prp_try_fmt(priv, cfg, &format, &cc); + fse->max_width = format.format.width; + fse->max_height = format.format.height; +out: + mutex_unlock(&priv->lock); + return ret; +} + static int prp_link_setup(struct media_entity *entity, const struct media_pad *local, const struct media_pad *remote, u32 flags)
@@ -1125,6 +1164,7 @@ static void prp_unregistered(struct v4l2_subdev *sd) static struct v4l2_subdev_pad_ops prp_pad_ops = { .enum_mbus_code = prp_enum_mbus_code, + .enum_frame_size = prp_enum_frame_size, .get_fmt = prp_get_fmt, .set_fmt = prp_set_fmt, .link_validate = prp_link_validate,
--
2.7.4
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html