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Message-Id: <20241210-uvc-roi-v16-12-e8201f7e8e57@chromium.org>
Date: Tue, 10 Dec 2024 09:42:48 +0000
From: Ricardo Ribalda <ribalda@...omium.org>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Hans de Goede <hdegoede@...hat.com>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Hans Verkuil <hverkuil@...all.nl>
Cc: Yunke Cao <yunkec@...omium.org>, linux-media@...r.kernel.org,
linux-kernel@...r.kernel.org, Ricardo Ribalda <ribalda@...omium.org>,
Yunke Cao <yunkec@...gle.com>
Subject: [PATCH v16 12/18] media: uvcvideo: Factor out query_boundaries
from query_ctrl
Split the function in two parts. queryctrl_boundaries will be used in
future patches.
No functional change expected from this patch.
Reviewed-by: Yunke Cao <yunkec@...gle.com>
Tested-by: Yunke Cao <yunkec@...gle.com>
Reviewed-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
---
drivers/media/usb/uvc/uvc_ctrl.c | 106 ++++++++++++++++++++++-----------------
1 file changed, 60 insertions(+), 46 deletions(-)
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 794d5c365352..785af382103b 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -1374,53 +1374,11 @@ static u32 uvc_get_ctrl_bitmap(struct uvc_control *ctrl,
return ~0;
}
-static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
- struct uvc_control *ctrl,
- struct uvc_control_mapping *mapping,
- struct v4l2_queryctrl *v4l2_ctrl)
+static int __uvc_queryctrl_boundaries(struct uvc_video_chain *chain,
+ struct uvc_control *ctrl,
+ struct uvc_control_mapping *mapping,
+ struct v4l2_queryctrl *v4l2_ctrl)
{
- struct uvc_control_mapping *master_map = NULL;
- struct uvc_control *master_ctrl = NULL;
-
- memset(v4l2_ctrl, 0, sizeof(*v4l2_ctrl));
- v4l2_ctrl->id = mapping->id;
- v4l2_ctrl->type = mapping->v4l2_type;
- strscpy(v4l2_ctrl->name, uvc_map_get_name(mapping),
- sizeof(v4l2_ctrl->name));
- v4l2_ctrl->flags = 0;
-
- if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR))
- v4l2_ctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY;
- if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR))
- v4l2_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
-
- if (mapping->master_id)
- __uvc_find_control(ctrl->entity, mapping->master_id,
- &master_map, &master_ctrl, 0, 0);
- if (master_ctrl && (master_ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) {
- s32 val;
- int ret;
-
- if (WARN_ON(uvc_ctrl_mapping_is_compound(master_map)))
- return -EIO;
-
- ret = __uvc_ctrl_get(chain, master_ctrl, master_map, &val);
- if (ret < 0)
- return ret;
-
- if (val != mapping->master_manual)
- v4l2_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
- }
-
- if (v4l2_ctrl->type >= V4L2_CTRL_COMPOUND_TYPES) {
- v4l2_ctrl->flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;
- v4l2_ctrl->default_value = 0;
- v4l2_ctrl->minimum = 0;
- v4l2_ctrl->maximum = 0;
- v4l2_ctrl->step = 0;
- return 0;
- }
-
if (!ctrl->cached) {
int ret = uvc_ctrl_populate_cache(chain, ctrl);
if (ret < 0)
@@ -1464,18 +1422,74 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN)
v4l2_ctrl->minimum = uvc_mapping_get_s32(mapping, UVC_GET_MIN,
uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN));
+ else
+ v4l2_ctrl->minimum = 0;
if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX)
v4l2_ctrl->maximum = uvc_mapping_get_s32(mapping, UVC_GET_MAX,
uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX));
+ else
+ v4l2_ctrl->maximum = 0;
if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES)
v4l2_ctrl->step = uvc_mapping_get_s32(mapping, UVC_GET_RES,
uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES));
+ else
+ v4l2_ctrl->step = 0;
return 0;
}
+static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
+ struct uvc_control *ctrl,
+ struct uvc_control_mapping *mapping,
+ struct v4l2_queryctrl *v4l2_ctrl)
+{
+ struct uvc_control_mapping *master_map = NULL;
+ struct uvc_control *master_ctrl = NULL;
+
+ memset(v4l2_ctrl, 0, sizeof(*v4l2_ctrl));
+ v4l2_ctrl->id = mapping->id;
+ v4l2_ctrl->type = mapping->v4l2_type;
+ strscpy(v4l2_ctrl->name, uvc_map_get_name(mapping),
+ sizeof(v4l2_ctrl->name));
+ v4l2_ctrl->flags = 0;
+
+ if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR))
+ v4l2_ctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY;
+ if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR))
+ v4l2_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+ if (mapping->master_id)
+ __uvc_find_control(ctrl->entity, mapping->master_id,
+ &master_map, &master_ctrl, 0, 0);
+ if (master_ctrl && (master_ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) {
+ s32 val;
+ int ret;
+
+ if (WARN_ON(uvc_ctrl_mapping_is_compound(master_map)))
+ return -EIO;
+
+ ret = __uvc_ctrl_get(chain, master_ctrl, master_map, &val);
+ if (ret < 0)
+ return ret;
+
+ if (val != mapping->master_manual)
+ v4l2_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
+ }
+
+ if (v4l2_ctrl->type >= V4L2_CTRL_COMPOUND_TYPES) {
+ v4l2_ctrl->flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;
+ v4l2_ctrl->default_value = 0;
+ v4l2_ctrl->minimum = 0;
+ v4l2_ctrl->maximum = 0;
+ v4l2_ctrl->step = 0;
+ return 0;
+ }
+
+ return __uvc_queryctrl_boundaries(chain, ctrl, mapping, v4l2_ctrl);
+}
+
int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
struct v4l2_queryctrl *v4l2_ctrl)
{
--
2.47.0.338.g60cca15819-goog
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