From 805d4311a54a25d7347684fdf778c6239b190864 Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Wed, 13 Dec 2023 17:00:05 +0200
Subject: [PATCH] media: v4l2-subdev: Add which field to struct
v4l2_subdev_frame_interval
Due to a historical mishap, the v4l2_subdev_frame_interval structure
is the only part of the V4L2 subdev userspace API that doesn't contain a
'which' field. This prevents trying frame intervals using the subdev
'TRY' state mechanism.
Adding a 'which' field is simple as the structure has 8 reserved fields.
This would however break userspace as the field is currently set to 0,
corresponding to V4L2_SUBDEV_FORMAT_TRY, while the corresponding ioctls
currently operate on the 'ACTIVE' state. We thus need to add a new
subdev client cap, V4L2_SUBDEV_CLIENT_CAP_INTERVAL_USES_WHICH, to
indicate that userspace is aware of this new field.
All drivers that implement the subdev .get_frame_interval() and
.set_frame_interval() operations are updated to return -EINVAL when
operating on the TRY state, preserving the current behaviour.
While at it, fix a bad copy&paste in the documentation of the struct
v4l2_subdev_frame_interval_enum 'which' field.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> # for imx-media
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for tegra-video
Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
.../media/v4l/vidioc-subdev-g-client-cap.rst | 5 ++++
.../v4l/vidioc-subdev-g-frame-interval.rst | 17 ++++++++-----
drivers/media/i2c/adv7180.c | 7 ++++++
drivers/media/i2c/alvium-csi2.c | 14 +++++++++++
drivers/media/i2c/et8ek8/et8ek8_driver.c | 14 +++++++++++
drivers/media/i2c/imx214.c | 7 ++++++
drivers/media/i2c/imx274.c | 14 +++++++++++
drivers/media/i2c/max9286.c | 14 +++++++++++
drivers/media/i2c/mt9m111.c | 14 +++++++++++
drivers/media/i2c/mt9m114.c | 14 +++++++++++
drivers/media/i2c/mt9v011.c | 14 +++++++++++
drivers/media/i2c/mt9v111.c | 14 +++++++++++
drivers/media/i2c/ov2680.c | 7 ++++++
drivers/media/i2c/ov5640.c | 14 +++++++++++
drivers/media/i2c/ov5648.c | 7 ++++++
drivers/media/i2c/ov5693.c | 7 ++++++
drivers/media/i2c/ov6650.c | 14 +++++++++++
drivers/media/i2c/ov7251.c | 14 +++++++++++
drivers/media/i2c/ov7670.c | 12 +++++++++
drivers/media/i2c/ov772x.c | 14 +++++++++++
drivers/media/i2c/ov8865.c | 7 ++++++
drivers/media/i2c/ov9650.c | 14 +++++++++++
drivers/media/i2c/s5c73m3/s5c73m3-core.c | 14 +++++++++++
drivers/media/i2c/s5k5baf.c | 14 +++++++++++
drivers/media/i2c/thp7312.c | 14 +++++++++++
drivers/media/i2c/tvp514x.c | 12 +++++++++
drivers/media/v4l2-core/v4l2-subdev.c | 25 ++++++++++++-------
.../media/atomisp/i2c/atomisp-gc0310.c | 7 ++++++
.../media/atomisp/i2c/atomisp-gc2235.c | 7 ++++++
.../media/atomisp/i2c/atomisp-mt9m114.c | 7 ++++++
.../media/atomisp/i2c/atomisp-ov2722.c | 7 ++++++
drivers/staging/media/imx/imx-ic-prp.c | 14 +++++++++++
drivers/staging/media/imx/imx-ic-prpencvf.c | 14 +++++++++++
drivers/staging/media/imx/imx-media-csi.c | 14 +++++++++++
drivers/staging/media/imx/imx-media-vdic.c | 14 +++++++++++
drivers/staging/media/tegra-video/csi.c | 7 ++++++
include/uapi/linux/v4l2-subdev.h | 15 ++++++++---
37 files changed, 425 insertions(+), 18 deletions(-)
diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-client-cap.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-client-cap.rst
index 20f12a1cc0f7d..810b6a859dc8d 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-client-cap.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-client-cap.rst
@@ -71,6 +71,11 @@ is unknown to the kernel.
of 'stream' fields (referring to the stream number) with various
ioctls. If this is not set (which is the default), the 'stream' fields
will be forced to 0 by the kernel.
+ * - ``V4L2_SUBDEV_CLIENT_CAP_INTERVAL_USES_WHICH``
+ - The client is aware of the :c:type:`v4l2_subdev_frame_interval`
+ ``which`` field. If this is not set (which is the default), the
+ ``which`` field is forced to ``V4L2_SUBDEV_FORMAT_ACTIVE`` by the
+ kernel.
Return Value
============
diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst
index 842f962d2aeaf..41e0e2c8ecc3f 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst
@@ -58,8 +58,9 @@ struct
contains the current frame interval as would be returned by a
``VIDIOC_SUBDEV_G_FRAME_INTERVAL`` call.
-Calling ``VIDIOC_SUBDEV_S_FRAME_INTERVAL`` on a subdev device node that has been
-registered in read-only mode is not allowed. An error is returned and the errno
+If the subdev device node has been registered in read-only mode, calls to
+``VIDIOC_SUBDEV_S_FRAME_INTERVAL`` are only valid if the ``which`` field is set
+to ``V4L2_SUBDEV_FORMAT_TRY``, otherwise an error is returned and the errno
variable is set to ``-EPERM``.
Drivers must not return an error solely because the requested interval
@@ -93,7 +94,11 @@ the same sub-device is not defined.
- ``stream``
- Stream identifier.
* - __u32
- - ``reserved``\ [8]
+ - ``which``
+ - Active or try frame interval, from enum
+ :ref:`v4l2_subdev_format_whence <v4l2-subdev-format-whence>`.
+ * - __u32
+ - ``reserved``\ [7]
- Reserved for future extensions. Applications and drivers must set
the array to zero.
@@ -114,9 +119,9 @@ EBUSY
EINVAL
The struct
:c:type:`v4l2_subdev_frame_interval`
- ``pad`` references a non-existing pad, or the pad doesn't support
- frame intervals.
+ ``pad`` references a non-existing pad, the ``which`` field references a
+ non-existing frame interval, or the pad doesn't support frame intervals.
EPERM
The ``VIDIOC_SUBDEV_S_FRAME_INTERVAL`` ioctl has been called on a read-only
- subdevice.
+ subdevice and the ``which`` field is set to ``V4L2_SUBDEV_FORMAT_ACTIVE``.
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index 7ed86030fb5c7..409b9a37f0185 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -469,6 +469,13 @@ static int adv7180_get_frame_interval(struct v4l2_subdev *sd,
{
struct adv7180_state *state = to_state(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (state->curr_norm & V4L2_STD_525_60) {
fi->interval.numerator = 1001;
fi->interval.denominator = 30000;
diff --git a/drivers/media/i2c/alvium-csi2.c b/drivers/media/i2c/alvium-csi2.c
index a173abb0509f3..34ff7fad38774 100644
--- a/drivers/media/i2c/alvium-csi2.c
+++ b/drivers/media/i2c/alvium-csi2.c
@@ -1654,6 +1654,13 @@ static int alvium_g_frame_interval(struct v4l2_subdev *sd,
{
struct alvium_dev *alvium = sd_to_alvium(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
fi->interval = alvium->frame_interval;
return 0;
@@ -1703,6 +1710,13 @@ static int alvium_s_frame_interval(struct v4l2_subdev *sd,
struct alvium_dev *alvium = sd_to_alvium(sd);
int ret;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (alvium->streaming)
return -EBUSY;
diff --git a/drivers/media/i2c/et8ek8/et8ek8_driver.c b/drivers/media/i2c/et8ek8/et8ek8_driver.c
index 71fb5aebd3df7..f548b1bb75fb9 100644
--- a/drivers/media/i2c/et8ek8/et8ek8_driver.c
+++ b/drivers/media/i2c/et8ek8/et8ek8_driver.c
@@ -1051,6 +1051,13 @@ static int et8ek8_get_frame_interval(struct v4l2_subdev *subdev,
{
struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
memset(fi, 0, sizeof(*fi));
fi->interval = sensor->current_reglist->mode.timeperframe;
@@ -1064,6 +1071,13 @@ static int et8ek8_set_frame_interval(struct v4l2_subdev *subdev,
struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev);
struct et8ek8_reglist *reglist;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
reglist = et8ek8_reglist_find_mode_ival(&meta_reglist,
sensor->current_reglist,
&fi->interval);
diff --git a/drivers/media/i2c/imx214.c b/drivers/media/i2c/imx214.c
index 8e832a4e35442..b148b1bd2bc3b 100644
--- a/drivers/media/i2c/imx214.c
+++ b/drivers/media/i2c/imx214.c
@@ -905,6 +905,13 @@ static int imx214_get_frame_interval(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval *fival)
{
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
fival->interval.numerator = 1;
fival->interval.denominator = IMX214_FPS;
diff --git a/drivers/media/i2c/imx274.c b/drivers/media/i2c/imx274.c
index 4040c642a36ff..352da68b8b41b 100644
--- a/drivers/media/i2c/imx274.c
+++ b/drivers/media/i2c/imx274.c
@@ -1333,6 +1333,13 @@ static int imx274_get_frame_interval(struct v4l2_subdev *sd,
{
struct stimx274 *imx274 = to_imx274(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
fi->interval = imx274->frame_interval;
dev_dbg(&imx274->client->dev, "%s frame rate = %d / %d\n",
__func__, imx274->frame_interval.numerator,
@@ -1350,6 +1357,13 @@ static int imx274_set_frame_interval(struct v4l2_subdev *sd,
int min, max, def;
int ret;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
ret = pm_runtime_resume_and_get(&imx274->client->dev);
if (ret < 0)
return ret;
diff --git a/drivers/media/i2c/max9286.c b/drivers/media/i2c/max9286.c
index 7e8cb53d31c35..d685d445cf23a 100644
--- a/drivers/media/i2c/max9286.c
+++ b/drivers/media/i2c/max9286.c
@@ -874,6 +874,13 @@ static int max9286_get_frame_interval(struct v4l2_subdev *sd,
{
struct max9286_priv *priv = sd_to_max9286(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (interval->pad != MAX9286_SRC_PAD)
return -EINVAL;
@@ -888,6 +895,13 @@ static int max9286_set_frame_interval(struct v4l2_subdev *sd,
{
struct max9286_priv *priv = sd_to_max9286(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (interval->pad != MAX9286_SRC_PAD)
return -EINVAL;
diff --git a/drivers/media/i2c/mt9m111.c b/drivers/media/i2c/mt9m111.c
index 602954650f2eb..ceeeb94c38d5d 100644
--- a/drivers/media/i2c/mt9m111.c
+++ b/drivers/media/i2c/mt9m111.c
@@ -1051,6 +1051,13 @@ static int mt9m111_get_frame_interval(struct v4l2_subdev *sd,
{
struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
fi->interval = mt9m111->frame_interval;
return 0;
@@ -1068,6 +1075,13 @@ static int mt9m111_set_frame_interval(struct v4l2_subdev *sd,
if (mt9m111->is_streaming)
return -EBUSY;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (fi->pad != 0)
return -EINVAL;
diff --git a/drivers/media/i2c/mt9m114.c b/drivers/media/i2c/mt9m114.c
index dcd94299787c8..427eae13ce26e 100644
--- a/drivers/media/i2c/mt9m114.c
+++ b/drivers/media/i2c/mt9m114.c
@@ -1592,6 +1592,13 @@ static int mt9m114_ifp_get_frame_interval(struct v4l2_subdev *sd,
struct v4l2_fract *ival = &interval->interval;
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(sensor->ifp.hdl.lock);
ival->numerator = 1;
@@ -1610,6 +1617,13 @@ static int mt9m114_ifp_set_frame_interval(struct v4l2_subdev *sd,
struct mt9m114 *sensor = ifp_to_mt9m114(sd);
int ret = 0;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(sensor->ifp.hdl.lock);
if (ival->numerator != 0 && ival->denominator != 0)
diff --git a/drivers/media/i2c/mt9v011.c b/drivers/media/i2c/mt9v011.c
index 3485761428bac..8834ff8786e59 100644
--- a/drivers/media/i2c/mt9v011.c
+++ b/drivers/media/i2c/mt9v011.c
@@ -366,6 +366,13 @@ static int mt9v011_get_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval *ival)
{
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
calc_fps(sd,
&ival->interval.numerator,
&ival->interval.denominator);
@@ -380,6 +387,13 @@ static int mt9v011_set_frame_interval(struct v4l2_subdev *sd,
struct v4l2_fract *tpf = &ival->interval;
u16 speed;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
speed = calc_speed(sd, tpf->numerator, tpf->denominator);
mt9v011_write(sd, R0A_MT9V011_CLK_SPEED, speed);
diff --git a/drivers/media/i2c/mt9v111.c b/drivers/media/i2c/mt9v111.c
index 496be67c971ba..b0b98ed3c1502 100644
--- a/drivers/media/i2c/mt9v111.c
+++ b/drivers/media/i2c/mt9v111.c
@@ -730,6 +730,13 @@ static int mt9v111_set_frame_interval(struct v4l2_subdev *sd,
tpf->denominator;
unsigned int max_fps;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (!tpf->numerator)
tpf->numerator = 1;
@@ -779,6 +786,13 @@ static int mt9v111_get_frame_interval(struct v4l2_subdev *sd,
struct mt9v111_dev *mt9v111 = sd_to_mt9v111(sd);
struct v4l2_fract *tpf = &ival->interval;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&mt9v111->stream_mutex);
tpf->numerator = 1;
diff --git a/drivers/media/i2c/ov2680.c b/drivers/media/i2c/ov2680.c
index e3ff64a9e6ca7..39d321e2b7f98 100644
--- a/drivers/media/i2c/ov2680.c
+++ b/drivers/media/i2c/ov2680.c
@@ -558,6 +558,13 @@ static int ov2680_get_frame_interval(struct v4l2_subdev *sd,
{
struct ov2680_dev *sensor = to_ov2680_dev(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&sensor->lock);
fi->interval = sensor->mode.frame_interval;
mutex_unlock(&sensor->lock);
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 336bfd1ffd328..5162d45fe73bd 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -3610,6 +3610,13 @@ static int ov5640_get_frame_interval(struct v4l2_subdev *sd,
{
struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&sensor->lock);
fi->interval = sensor->frame_interval;
mutex_unlock(&sensor->lock);
@@ -3625,6 +3632,13 @@ static int ov5640_set_frame_interval(struct v4l2_subdev *sd,
const struct ov5640_mode_info *mode;
int frame_rate, ret = 0;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (fi->pad != 0)
return -EINVAL;
diff --git a/drivers/media/i2c/ov5648.c b/drivers/media/i2c/ov5648.c
index d0d7e9968f485..4b86d2631bd1c 100644
--- a/drivers/media/i2c/ov5648.c
+++ b/drivers/media/i2c/ov5648.c
@@ -2276,6 +2276,13 @@ static int ov5648_get_frame_interval(struct v4l2_subdev *subdev,
const struct ov5648_mode *mode;
int ret = 0;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&sensor->mutex);
mode = sensor->state.mode;
diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
index a65645811fbcb..8deb28b55983e 100644
--- a/drivers/media/i2c/ov5693.c
+++ b/drivers/media/i2c/ov5693.c
@@ -1013,6 +1013,13 @@ static int ov5693_get_frame_interval(struct v4l2_subdev *sd,
ov5693->ctrls.vblank->val);
unsigned int fps = DIV_ROUND_CLOSEST(OV5693_PIXEL_RATE, framesize);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
interval->interval.numerator = 1;
interval->interval.denominator = fps;
diff --git a/drivers/media/i2c/ov6650.c b/drivers/media/i2c/ov6650.c
index a4dc45bdf3d7c..b65befb22a791 100644
--- a/drivers/media/i2c/ov6650.c
+++ b/drivers/media/i2c/ov6650.c
@@ -806,6 +806,13 @@ static int ov6650_get_frame_interval(struct v4l2_subdev *sd,
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov6650 *priv = to_ov6650(client);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
ival->interval = priv->tpf;
dev_dbg(&client->dev, "Frame interval: %u/%u s\n",
@@ -823,6 +830,13 @@ static int ov6650_set_frame_interval(struct v4l2_subdev *sd,
struct v4l2_fract *tpf = &ival->interval;
int div, ret;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (tpf->numerator == 0 || tpf->denominator == 0)
div = 1; /* Reset to full rate */
else
diff --git a/drivers/media/i2c/ov7251.c b/drivers/media/i2c/ov7251.c
index 10d6b5deed83b..30f61e04ecaf5 100644
--- a/drivers/media/i2c/ov7251.c
+++ b/drivers/media/i2c/ov7251.c
@@ -1391,6 +1391,13 @@ static int ov7251_get_frame_interval(struct v4l2_subdev *subdev,
{
struct ov7251 *ov7251 = to_ov7251(subdev);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&ov7251->lock);
fi->interval = ov7251->current_mode->timeperframe;
mutex_unlock(&ov7251->lock);
@@ -1406,6 +1413,13 @@ static int ov7251_set_frame_interval(struct v4l2_subdev *subdev,
const struct ov7251_mode_info *new_mode;
int ret = 0;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&ov7251->lock);
new_mode = ov7251_find_mode_by_ival(ov7251, &fi->interval);
diff --git a/drivers/media/i2c/ov7670.c b/drivers/media/i2c/ov7670.c
index 463f20ece36e5..0cb96b6c99905 100644
--- a/drivers/media/i2c/ov7670.c
+++ b/drivers/media/i2c/ov7670.c
@@ -1160,6 +1160,12 @@ static int ov7670_get_frame_interval(struct v4l2_subdev *sd,
{
struct ov7670_info *info = to_state(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
info->devtype->get_framerate(sd, &ival->interval);
@@ -1173,6 +1179,12 @@ static int ov7670_set_frame_interval(struct v4l2_subdev *sd,
struct v4l2_fract *tpf = &ival->interval;
struct ov7670_info *info = to_state(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
return info->devtype->set_framerate(sd, tpf);
}
diff --git a/drivers/media/i2c/ov772x.c b/drivers/media/i2c/ov772x.c
index a14a25946c5b3..3e36a55274efb 100644
--- a/drivers/media/i2c/ov772x.c
+++ b/drivers/media/i2c/ov772x.c
@@ -724,6 +724,13 @@ static int ov772x_get_frame_interval(struct v4l2_subdev *sd,
struct ov772x_priv *priv = to_ov772x(sd);
struct v4l2_fract *tpf = &ival->interval;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
tpf->numerator = 1;
tpf->denominator = priv->fps;
@@ -739,6 +746,13 @@ static int ov772x_set_frame_interval(struct v4l2_subdev *sd,
unsigned int fps;
int ret = 0;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&priv->lock);
if (priv->streaming) {
diff --git a/drivers/media/i2c/ov8865.c b/drivers/media/i2c/ov8865.c
index 02a595281c49e..95ffe7536aa6a 100644
--- a/drivers/media/i2c/ov8865.c
+++ b/drivers/media/i2c/ov8865.c
@@ -2846,6 +2846,13 @@ static int ov8865_get_frame_interval(struct v4l2_subdev *subdev,
unsigned int framesize;
unsigned int fps;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&sensor->mutex);
mode = sensor->state.mode;
diff --git a/drivers/media/i2c/ov9650.c b/drivers/media/i2c/ov9650.c
index f528892c893f2..66cd0e9ddc9ab 100644
--- a/drivers/media/i2c/ov9650.c
+++ b/drivers/media/i2c/ov9650.c
@@ -1107,6 +1107,13 @@ static int ov965x_get_frame_interval(struct v4l2_subdev *sd,
{
struct ov965x *ov965x = to_ov965x(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&ov965x->lock);
fi->interval = ov965x->fiv->interval;
mutex_unlock(&ov965x->lock);
@@ -1156,6 +1163,13 @@ static int ov965x_set_frame_interval(struct v4l2_subdev *sd,
struct ov965x *ov965x = to_ov965x(sd);
int ret;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
v4l2_dbg(1, debug, sd, "Setting %d/%d frame interval\n",
fi->interval.numerator, fi->interval.denominator);
diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-core.c b/drivers/media/i2c/s5c73m3/s5c73m3-core.c
index 73ca50f498122..af8d01f78c32a 100644
--- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c
+++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c
@@ -872,6 +872,13 @@ static int s5c73m3_oif_get_frame_interval(struct v4l2_subdev *sd,
{
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (fi->pad != OIF_SOURCE_PAD)
return -EINVAL;
@@ -923,6 +930,13 @@ static int s5c73m3_oif_set_frame_interval(struct v4l2_subdev *sd,
struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
int ret;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (fi->pad != OIF_SOURCE_PAD)
return -EINVAL;
diff --git a/drivers/media/i2c/s5k5baf.c b/drivers/media/i2c/s5k5baf.c
index 2fd1ecfeb0868..de079d2c9282b 100644
--- a/drivers/media/i2c/s5k5baf.c
+++ b/drivers/media/i2c/s5k5baf.c
@@ -1124,6 +1124,13 @@ static int s5k5baf_get_frame_interval(struct v4l2_subdev *sd,
{
struct s5k5baf *state = to_s5k5baf(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&state->lock);
fi->interval.numerator = state->fiv;
fi->interval.denominator = 10000;
@@ -1162,6 +1169,13 @@ static int s5k5baf_set_frame_interval(struct v4l2_subdev *sd,
{
struct s5k5baf *state = to_s5k5baf(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&state->lock);
__s5k5baf_set_frame_interval(state, fi);
mutex_unlock(&state->lock);
diff --git a/drivers/media/i2c/thp7312.c b/drivers/media/i2c/thp7312.c
index d4975b180704a..ad4f2b794e1a3 100644
--- a/drivers/media/i2c/thp7312.c
+++ b/drivers/media/i2c/thp7312.c
@@ -740,6 +740,13 @@ static int thp7312_get_frame_interval(struct v4l2_subdev *sd,
{
struct thp7312_device *thp7312 = to_thp7312_dev(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
fi->interval.numerator = 1;
fi->interval.denominator = thp7312->current_rate->fps;
@@ -757,6 +764,13 @@ static int thp7312_set_frame_interval(struct v4l2_subdev *sd,
unsigned int best_delta = UINT_MAX;
unsigned int fps;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
/* Avoid divisions by 0, pick the highest frame if the interval is 0. */
fps = fi->interval.numerator
? DIV_ROUND_CLOSEST(fi->interval.denominator, fi->interval.numerator)
diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c
index dee0cf9923792..5a561e5bf6598 100644
--- a/drivers/media/i2c/tvp514x.c
+++ b/drivers/media/i2c/tvp514x.c
@@ -746,6 +746,12 @@ tvp514x_get_frame_interval(struct v4l2_subdev *sd,
struct tvp514x_decoder *decoder = to_decoder(sd);
enum tvp514x_std current_std;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
/* get the current standard */
current_std = decoder->current_std;
@@ -765,6 +771,12 @@ tvp514x_set_frame_interval(struct v4l2_subdev *sd,
struct v4l2_fract *timeperframe;
enum tvp514x_std current_std;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
timeperframe = &ival->interval;
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index 405a4a2fa565b..30131a37f2d58 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -291,9 +291,8 @@ static inline int check_frame_interval(struct v4l2_subdev *sd,
if (!fi)
return -EINVAL;
- return check_pad(sd, fi->pad) ? :
- check_state(sd, state, V4L2_SUBDEV_FORMAT_ACTIVE, fi->pad,
- fi->stream);
+ return check_which(fi->which) ? : check_pad(sd, fi->pad) ? :
+ check_state(sd, state, fi->which, fi->pad, fi->stream);
}
static int call_get_frame_interval(struct v4l2_subdev *sd,
@@ -537,9 +536,16 @@ subdev_ioctl_get_state(struct v4l2_subdev *sd, struct v4l2_subdev_fh *subdev_fh,
which = ((struct v4l2_subdev_selection *)arg)->which;
break;
case VIDIOC_SUBDEV_G_FRAME_INTERVAL:
- case VIDIOC_SUBDEV_S_FRAME_INTERVAL:
- which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ case VIDIOC_SUBDEV_S_FRAME_INTERVAL: {
+ struct v4l2_subdev_frame_interval *fi = arg;
+
+ if (!(subdev_fh->client_caps &
+ V4L2_SUBDEV_CLIENT_CAP_INTERVAL_USES_WHICH))
+ fi->which = V4L2_SUBDEV_FORMAT_ACTIVE;
+
+ which = fi->which;
break;
+ }
case VIDIOC_SUBDEV_G_ROUTING:
case VIDIOC_SUBDEV_S_ROUTING:
which = ((struct v4l2_subdev_routing *)arg)->which;
@@ -796,12 +802,12 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
case VIDIOC_SUBDEV_S_FRAME_INTERVAL: {
struct v4l2_subdev_frame_interval *fi = arg;
- if (ro_subdev)
- return -EPERM;
-
if (!client_supports_streams)
fi->stream = 0;
+ if (fi->which != V4L2_SUBDEV_FORMAT_TRY && ro_subdev)
+ return -EPERM;
+
memset(fi->reserved, 0, sizeof(fi->reserved));
return v4l2_subdev_call(sd, pad, set_frame_interval, state, fi);
}
@@ -998,7 +1004,8 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
client_cap->capabilities &= ~V4L2_SUBDEV_CLIENT_CAP_STREAMS;
/* Filter out unsupported capabilities */
- client_cap->capabilities &= V4L2_SUBDEV_CLIENT_CAP_STREAMS;
+ client_cap->capabilities &= (V4L2_SUBDEV_CLIENT_CAP_STREAMS |
+ V4L2_SUBDEV_CLIENT_CAP_INTERVAL_USES_WHICH);
subdev_fh->client_caps = client_cap->capabilities;
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c b/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c
index 006e8adac47b0..5bcd634a2a44d 100644
--- a/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c
+++ b/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c
@@ -500,6 +500,13 @@ static int gc0310_get_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval *interval)
{
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
interval->interval.numerator = 1;
interval->interval.denominator = GC0310_FPS;
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c b/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c
index aa257322a7000..bec4c56158640 100644
--- a/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c
+++ b/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c
@@ -704,6 +704,13 @@ static int gc2235_get_frame_interval(struct v4l2_subdev *sd,
{
struct gc2235_device *dev = to_gc2235_sensor(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
interval->interval.numerator = 1;
interval->interval.denominator = dev->res->fps;
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c b/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c
index 459c5b8233cee..20f02d18a8de1 100644
--- a/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c
+++ b/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c
@@ -1394,6 +1394,13 @@ static int mt9m114_get_frame_interval(struct v4l2_subdev *sd,
{
struct mt9m114_device *dev = to_mt9m114_sensor(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
interval->interval.numerator = 1;
interval->interval.denominator = mt9m114_res[dev->res].fps;
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
index b3ef04d7ccca7..133e346ae51b0 100644
--- a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
+++ b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
@@ -851,6 +851,13 @@ static int ov2722_get_frame_interval(struct v4l2_subdev *sd,
{
struct ov2722_device *dev = to_ov2722_sensor(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
interval->interval.numerator = 1;
interval->interval.denominator = dev->res->fps;
diff --git a/drivers/staging/media/imx/imx-ic-prp.c b/drivers/staging/media/imx/imx-ic-prp.c
index fb96f87e664ed..2b80d54006b39 100644
--- a/drivers/staging/media/imx/imx-ic-prp.c
+++ b/drivers/staging/media/imx/imx-ic-prp.c
@@ -399,6 +399,13 @@ static int prp_get_frame_interval(struct v4l2_subdev *sd,
{
struct prp_priv *priv = sd_to_priv(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (fi->pad >= PRP_NUM_PADS)
return -EINVAL;
@@ -415,6 +422,13 @@ static int prp_set_frame_interval(struct v4l2_subdev *sd,
{
struct prp_priv *priv = sd_to_priv(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (fi->pad >= PRP_NUM_PADS)
return -EINVAL;
diff --git a/drivers/staging/media/imx/imx-ic-prpencvf.c b/drivers/staging/media/imx/imx-ic-prpencvf.c
index 7bfe433cd3228..17fd980c9d3c3 100644
--- a/drivers/staging/media/imx/imx-ic-prpencvf.c
+++ b/drivers/staging/media/imx/imx-ic-prpencvf.c
@@ -1209,6 +1209,13 @@ static int prp_get_frame_interval(struct v4l2_subdev *sd,
{
struct prp_priv *priv = sd_to_priv(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (fi->pad >= PRPENCVF_NUM_PADS)
return -EINVAL;
@@ -1225,6 +1232,13 @@ static int prp_set_frame_interval(struct v4l2_subdev *sd,
{
struct prp_priv *priv = sd_to_priv(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (fi->pad >= PRPENCVF_NUM_PADS)
return -EINVAL;
diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
index 4308fdc9b58e2..785aac8819221 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -908,6 +908,13 @@ static int csi_get_frame_interval(struct v4l2_subdev *sd,
{
struct csi_priv *priv = v4l2_get_subdevdata(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (fi->pad >= CSI_NUM_PADS)
return -EINVAL;
@@ -928,6 +935,13 @@ static int csi_set_frame_interval(struct v4l2_subdev *sd,
struct v4l2_fract *input_fi;
int ret = 0;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&priv->lock);
input_fi = &priv->frame_interval[CSI_SINK_PAD];
diff --git a/drivers/staging/media/imx/imx-media-vdic.c b/drivers/staging/media/imx/imx-media-vdic.c
index a51b376792396..09da4103a8dbe 100644
--- a/drivers/staging/media/imx/imx-media-vdic.c
+++ b/drivers/staging/media/imx/imx-media-vdic.c
@@ -786,6 +786,13 @@ static int vdic_get_frame_interval(struct v4l2_subdev *sd,
{
struct vdic_priv *priv = v4l2_get_subdevdata(sd);
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
if (fi->pad >= VDIC_NUM_PADS)
return -EINVAL;
@@ -806,6 +813,13 @@ static int vdic_set_frame_interval(struct v4l2_subdev *sd,
struct v4l2_fract *input_fi, *output_fi;
int ret = 0;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
mutex_lock(&priv->lock);
input_fi = &priv->frame_interval[priv->active_input_pad];
diff --git a/drivers/staging/media/tegra-video/csi.c b/drivers/staging/media/tegra-video/csi.c
index b1b666179be52..255cccd0c5fda 100644
--- a/drivers/staging/media/tegra-video/csi.c
+++ b/drivers/staging/media/tegra-video/csi.c
@@ -231,6 +231,13 @@ static int tegra_csi_get_frame_interval(struct v4l2_subdev *subdev,
if (!IS_ENABLED(CONFIG_VIDEO_TEGRA_TPG))
return -ENOIOCTLCMD;
+ /*
+ * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+ * subdev active state API.
+ */
+ if (vfi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
vfi->interval.numerator = 1;
vfi->interval.denominator = csi_chan->framerate;
diff --git a/include/uapi/linux/v4l2-subdev.h b/include/uapi/linux/v4l2-subdev.h
index f0fbb4a7c1506..7048c51581c6e 100644
--- a/include/uapi/linux/v4l2-subdev.h
+++ b/include/uapi/linux/v4l2-subdev.h
@@ -116,13 +116,15 @@ struct v4l2_subdev_frame_size_enum {
* @pad: pad number, as reported by the media API
* @interval: frame interval in seconds
* @stream: stream number, defined in subdev routing
+ * @which: interval type (from enum v4l2_subdev_format_whence)
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_frame_interval {
__u32 pad;
struct v4l2_fract interval;
__u32 stream;
- __u32 reserved[8];
+ __u32 which;
+ __u32 reserved[7];
};
/**
@@ -133,7 +135,7 @@ struct v4l2_subdev_frame_interval {
* @width: frame width in pixels
* @height: frame height in pixels
* @interval: frame interval in seconds
- * @which: format type (from enum v4l2_subdev_format_whence)
+ * @which: interval type (from enum v4l2_subdev_format_whence)
* @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
@@ -239,7 +241,14 @@ struct v4l2_subdev_routing {
* set (which is the default), the 'stream' fields will be forced to 0 by the
* kernel.
*/
-#define V4L2_SUBDEV_CLIENT_CAP_STREAMS (1ULL << 0)
+#define V4L2_SUBDEV_CLIENT_CAP_STREAMS (1ULL << 0)
+
+/*
+ * The client is aware of the struct v4l2_subdev_frame_interval which field. If
+ * this is not set (which is the default), the which field is forced to
+ * V4L2_SUBDEV_FORMAT_ACTIVE by the kernel.
+ */
+#define V4L2_SUBDEV_CLIENT_CAP_INTERVAL_USES_WHICH (1ULL << 1)
/**
* struct v4l2_subdev_client_capability - Capabilities of the client accessing
--
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