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Message-Id: <1495672189-29164-33-git-send-email-steve_longerbeam@mentor.com>
Date: Wed, 24 May 2017 17:29:47 -0700
From: Steve Longerbeam <slongerbeam@...il.com>
To: robh+dt@...nel.org, mark.rutland@....com, shawnguo@...nel.org,
kernel@...gutronix.de, fabio.estevam@....com,
linux@...linux.org.uk, mchehab@...nel.org, hverkuil@...all.nl,
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p.zabel@...gutronix.de, laurent.pinchart+renesas@...asonboard.com,
bparrot@...com, geert@...ux-m68k.org, arnd@...db.de,
sudipm.mukherjee@...il.com, minghsiu.tsai@...iatek.com,
tiffany.lin@...iatek.com, jean-christophe.trotin@...com,
horms+renesas@...ge.net.au, niklas.soderlund+renesas@...natech.se,
robert.jarzmik@...e.fr, songjun.wu@...rochip.com,
andrew-ct.chen@...iatek.com, gregkh@...uxfoundation.org,
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Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
devel@...verdev.osuosl.org,
Russell King <rmk+kernel@...linux.org.uk>,
Steve Longerbeam <steve_longerbeam@...tor.com>
Subject: [PATCH v7 32/34] media: imx: capture: add frame sizes/interval enumeration
From: Russell King <rmk+kernel@...linux.org.uk>
Add support for enumerating frame sizes and frame intervals from the
first subdev via the V4L2 interfaces.
Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
Signed-off-by: Steve Longerbeam <steve_longerbeam@...tor.com>
---
drivers/staging/media/imx/imx-media-capture.c | 73 +++++++++++++++++++++++++++
1 file changed, 73 insertions(+)
diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c
index 76c17d9..8b28dbc 100644
--- a/drivers/staging/media/imx/imx-media-capture.c
+++ b/drivers/staging/media/imx/imx-media-capture.c
@@ -81,6 +81,76 @@ static int vidioc_querycap(struct file *file, void *fh,
return 0;
}
+static int capture_enum_framesizes(struct file *file, void *fh,
+ struct v4l2_frmsizeenum *fsize)
+{
+ struct capture_priv *priv = video_drvdata(file);
+ const struct imx_media_pixfmt *cc;
+ struct v4l2_subdev_frame_size_enum fse = {
+ .index = fsize->index,
+ .pad = priv->src_sd_pad,
+ .which = V4L2_SUBDEV_FORMAT_ACTIVE,
+ };
+ int ret;
+
+ cc = imx_media_find_format(fsize->pixel_format, CS_SEL_ANY, true);
+ if (!cc)
+ return -EINVAL;
+
+ fse.code = cc->codes[0];
+
+ ret = v4l2_subdev_call(priv->src_sd, pad, enum_frame_size, NULL, &fse);
+ if (ret)
+ return ret;
+
+ if (fse.min_width == fse.max_width &&
+ fse.min_height == fse.max_height) {
+ fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+ fsize->discrete.width = fse.min_width;
+ fsize->discrete.height = fse.min_height;
+ } else {
+ fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
+ fsize->stepwise.min_width = fse.min_width;
+ fsize->stepwise.max_width = fse.max_width;
+ fsize->stepwise.min_height = fse.min_height;
+ fsize->stepwise.max_height = fse.max_height;
+ fsize->stepwise.step_width = 1;
+ fsize->stepwise.step_height = 1;
+ }
+
+ return 0;
+}
+
+static int capture_enum_frameintervals(struct file *file, void *fh,
+ struct v4l2_frmivalenum *fival)
+{
+ struct capture_priv *priv = video_drvdata(file);
+ const struct imx_media_pixfmt *cc;
+ struct v4l2_subdev_frame_interval_enum fie = {
+ .index = fival->index,
+ .pad = priv->src_sd_pad,
+ .width = fival->width,
+ .height = fival->height,
+ .which = V4L2_SUBDEV_FORMAT_ACTIVE,
+ };
+ int ret;
+
+ cc = imx_media_find_format(fival->pixel_format, CS_SEL_ANY, true);
+ if (!cc)
+ return -EINVAL;
+
+ fie.code = cc->codes[0];
+
+ ret = v4l2_subdev_call(priv->src_sd, pad, enum_frame_interval, NULL, &fie);
+ if (ret)
+ return ret;
+
+ fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
+ fival->discrete = fie.interval;
+
+ return 0;
+}
+
static int capture_enum_fmt_vid_cap(struct file *file, void *fh,
struct v4l2_fmtdesc *f)
{
@@ -269,6 +339,9 @@ static int capture_s_parm(struct file *file, void *fh,
static const struct v4l2_ioctl_ops capture_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
+ .vidioc_enum_framesizes = capture_enum_framesizes,
+ .vidioc_enum_frameintervals = capture_enum_frameintervals,
+
.vidioc_enum_fmt_vid_cap = capture_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = capture_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = capture_try_fmt_vid_cap,
--
2.7.4
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