diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0482-media-add-V4L2_CTRL_TYPE_AREA-control-type.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0482-media-add-V4L2_CTRL_TYPE_AREA-control-type.patch | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0482-media-add-V4L2_CTRL_TYPE_AREA-control-type.patch b/target/linux/bcm27xx/patches-5.4/950-0482-media-add-V4L2_CTRL_TYPE_AREA-control-type.patch new file mode 100644 index 0000000000..d82c3196b8 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0482-media-add-V4L2_CTRL_TYPE_AREA-control-type.patch @@ -0,0 +1,157 @@ +From 4af6218f1d01e5ae54dc43e4bd2421617c777570 Mon Sep 17 00:00:00 2001 +From: Ricardo Ribalda Delgado <ribalda@kernel.org> +Date: Mon, 7 Oct 2019 12:06:31 -0300 +Subject: [PATCH] media: add V4L2_CTRL_TYPE_AREA control type + +Commit d1dc49370f8371b00e682ac409aa1987ce641e93 upstream. + +This type contains the width and the height of a rectangular area. + +Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> +Signed-off-by: Ricardo Ribalda Delgado <ribalda@kernel.org> +Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> +Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> +--- + drivers/media/v4l2-core/v4l2-ctrls.c | 21 ++++++++++++++ + include/media/v4l2-ctrls.h | 42 ++++++++++++++++++++++++++++ + include/uapi/linux/videodev2.h | 6 ++++ + 3 files changed, 69 insertions(+) + +--- a/drivers/media/v4l2-core/v4l2-ctrls.c ++++ b/drivers/media/v4l2-core/v4l2-ctrls.c +@@ -1673,6 +1673,7 @@ static int std_validate_compound(const s + { + struct v4l2_ctrl_mpeg2_slice_params *p_mpeg2_slice_params; + struct v4l2_ctrl_vp8_frame_header *p_vp8_frame_header; ++ struct v4l2_area *area; + void *p = ptr.p + idx * ctrl->elem_size; + + switch ((u32)ctrl->type) { +@@ -1749,6 +1750,11 @@ static int std_validate_compound(const s + zero_padding(p_vp8_frame_header->entropy_header); + zero_padding(p_vp8_frame_header->coder_state); + break; ++ case V4L2_CTRL_TYPE_AREA: ++ area = p; ++ if (!area->width || !area->height) ++ return -EINVAL; ++ break; + default: + return -EINVAL; + } +@@ -2422,6 +2428,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(s + case V4L2_CTRL_TYPE_VP8_FRAME_HEADER: + elem_size = sizeof(struct v4l2_ctrl_vp8_frame_header); + break; ++ case V4L2_CTRL_TYPE_AREA: ++ elem_size = sizeof(struct v4l2_area); ++ break; + default: + if (type < V4L2_CTRL_COMPOUND_TYPES) + elem_size = sizeof(s32); +@@ -4086,6 +4095,18 @@ int __v4l2_ctrl_s_ctrl_string(struct v4l + } + EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_string); + ++int __v4l2_ctrl_s_ctrl_area(struct v4l2_ctrl *ctrl, ++ const struct v4l2_area *area) ++{ ++ lockdep_assert_held(ctrl->handler->lock); ++ ++ /* It's a driver bug if this happens. */ ++ WARN_ON(ctrl->type != V4L2_CTRL_TYPE_AREA); ++ *ctrl->p_new.p_area = *area; ++ return set_ctrl(NULL, ctrl, 0); ++} ++EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_area); ++ + void v4l2_ctrl_request_complete(struct media_request *req, + struct v4l2_ctrl_handler *main_hdl) + { +--- a/include/media/v4l2-ctrls.h ++++ b/include/media/v4l2-ctrls.h +@@ -50,6 +50,7 @@ struct poll_table_struct; + * @p_h264_slice_params: Pointer to a struct v4l2_ctrl_h264_slice_params. + * @p_h264_decode_params: Pointer to a struct v4l2_ctrl_h264_decode_params. + * @p_vp8_frame_header: Pointer to a VP8 frame header structure. ++ * @p_area: Pointer to an area. + * @p: Pointer to a compound value. + */ + union v4l2_ctrl_ptr { +@@ -68,6 +69,7 @@ union v4l2_ctrl_ptr { + struct v4l2_ctrl_h264_slice_params *p_h264_slice_params; + struct v4l2_ctrl_h264_decode_params *p_h264_decode_params; + struct v4l2_ctrl_vp8_frame_header *p_vp8_frame_header; ++ struct v4l2_area *p_area; + void *p; + }; + +@@ -1063,6 +1065,46 @@ static inline int v4l2_ctrl_s_ctrl_strin + v4l2_ctrl_unlock(ctrl); + + return rval; ++} ++ ++/** ++ * __v4l2_ctrl_s_ctrl_area() - Unlocked variant of v4l2_ctrl_s_ctrl_area(). ++ * ++ * @ctrl: The control. ++ * @area: The new area. ++ * ++ * This sets the control's new area safely by going through the control ++ * framework. This function assumes the control's handler is already locked, ++ * allowing it to be used from within the &v4l2_ctrl_ops functions. ++ * ++ * This function is for area type controls only. ++ */ ++int __v4l2_ctrl_s_ctrl_area(struct v4l2_ctrl *ctrl, ++ const struct v4l2_area *area); ++ ++/** ++ * v4l2_ctrl_s_ctrl_area() - Helper function to set a control's area value ++ * from within a driver. ++ * ++ * @ctrl: The control. ++ * @area: The new area. ++ * ++ * This sets the control's new area safely by going through the control ++ * framework. This function will lock the control's handler, so it cannot be ++ * used from within the &v4l2_ctrl_ops functions. ++ * ++ * This function is for area type controls only. ++ */ ++static inline int v4l2_ctrl_s_ctrl_area(struct v4l2_ctrl *ctrl, ++ const struct v4l2_area *area) ++{ ++ int rval; ++ ++ v4l2_ctrl_lock(ctrl); ++ rval = __v4l2_ctrl_s_ctrl_area(ctrl, area); ++ v4l2_ctrl_unlock(ctrl); ++ ++ return rval; + } + + /* Internal helper functions that deal with control events. */ +--- a/include/uapi/linux/videodev2.h ++++ b/include/uapi/linux/videodev2.h +@@ -426,6 +426,11 @@ struct v4l2_fract { + __u32 denominator; + }; + ++struct v4l2_area { ++ __u32 width; ++ __u32 height; ++}; ++ + /** + * struct v4l2_capability - Describes V4L2 device caps returned by VIDIOC_QUERYCAP + * +@@ -1724,6 +1729,7 @@ enum v4l2_ctrl_type { + V4L2_CTRL_TYPE_U8 = 0x0100, + V4L2_CTRL_TYPE_U16 = 0x0101, + V4L2_CTRL_TYPE_U32 = 0x0102, ++ V4L2_CTRL_TYPE_AREA = 0x0106, + }; + + /* Used in the VIDIOC_QUERYCTRL ioctl for querying controls */ |