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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * V4L2 controls framework private header.4 *5 * Copyright (C) 2010-2021 Hans Verkuil <hverkuil-cisco@xs4all.nl>6 */7 8#ifndef _V4L2_CTRLS_PRIV_H_9#define _V4L2_CTRLS_PRIV_H_10 11#define dprintk(vdev, fmt, arg...) do { \12 if (!WARN_ON(!(vdev)) && ((vdev)->dev_debug & V4L2_DEV_DEBUG_CTRL)) \13 printk(KERN_DEBUG pr_fmt("%s: %s: " fmt), \14 __func__, video_device_node_name(vdev), ##arg); \15} while (0)16 17#define has_op(master, op) \18 ((master)->ops && (master)->ops->op)19#define call_op(master, op) \20 (has_op(master, op) ? (master)->ops->op(master) : 0)21 22static inline u32 node2id(struct list_head *node)23{24 return list_entry(node, struct v4l2_ctrl_ref, node)->ctrl->id;25}26 27/*28 * Small helper function to determine if the autocluster is set to manual29 * mode.30 */31static inline bool is_cur_manual(const struct v4l2_ctrl *master)32{33 return master->is_auto && master->cur.val == master->manual_mode_value;34}35 36/*37 * Small helper function to determine if the autocluster will be set to manual38 * mode.39 */40static inline bool is_new_manual(const struct v4l2_ctrl *master)41{42 return master->is_auto && master->val == master->manual_mode_value;43}44 45static inline u32 user_flags(const struct v4l2_ctrl *ctrl)46{47 u32 flags = ctrl->flags;48 49 if (ctrl->is_ptr)50 flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;51 52 return flags;53}54 55/* v4l2-ctrls-core.c */56void cur_to_new(struct v4l2_ctrl *ctrl);57void cur_to_req(struct v4l2_ctrl_ref *ref);58void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags);59void new_to_req(struct v4l2_ctrl_ref *ref);60int req_to_new(struct v4l2_ctrl_ref *ref);61void send_initial_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl);62void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes);63int handler_new_ref(struct v4l2_ctrl_handler *hdl,64 struct v4l2_ctrl *ctrl,65 struct v4l2_ctrl_ref **ctrl_ref,66 bool from_other_dev, bool allocate_req);67struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id);68struct v4l2_ctrl_ref *find_ref_lock(struct v4l2_ctrl_handler *hdl, u32 id);69int check_range(enum v4l2_ctrl_type type,70 s64 min, s64 max, u64 step, s64 def);71void update_from_auto_cluster(struct v4l2_ctrl *master);72int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master,73 bool set, u32 ch_flags);74 75/* v4l2-ctrls-api.c */76int v4l2_g_ext_ctrls_common(struct v4l2_ctrl_handler *hdl,77 struct v4l2_ext_controls *cs,78 struct video_device *vdev);79int try_set_ext_ctrls_common(struct v4l2_fh *fh,80 struct v4l2_ctrl_handler *hdl,81 struct v4l2_ext_controls *cs,82 struct video_device *vdev, bool set);83 84/* v4l2-ctrls-request.c */85void v4l2_ctrl_handler_init_request(struct v4l2_ctrl_handler *hdl);86void v4l2_ctrl_handler_free_request(struct v4l2_ctrl_handler *hdl);87int v4l2_g_ext_ctrls_request(struct v4l2_ctrl_handler *hdl, struct video_device *vdev,88 struct media_device *mdev, struct v4l2_ext_controls *cs);89int try_set_ext_ctrls_request(struct v4l2_fh *fh,90 struct v4l2_ctrl_handler *hdl,91 struct video_device *vdev,92 struct media_device *mdev,93 struct v4l2_ext_controls *cs, bool set);94 95#endif96