// SPDX-License-Identifier: GPL-2.0-only /* * V4L2 sub-device * * Copyright (C) 2010 Nokia Corporation * * Contact: Laurent Pinchart <[email protected]> * Sakari Ailus <[email protected]> */ #include <linux/export.h> #include <linux/ioctl.h> #include <linux/leds.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/overflow.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/types.h> #include <linux/version.h> #include <linux/videodev2.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-event.h> #include <media/v4l2-fh.h> #include <media/v4l2-ioctl.h> #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) /* * The Streams API is an experimental feature. To use the Streams API, set * 'v4l2_subdev_enable_streams_api' to 1 below. */ static bool v4l2_subdev_enable_streams_api; #endif /* * Maximum stream ID is 63 for now, as we use u64 bitmask to represent a set * of streams. * * Note that V4L2_FRAME_DESC_ENTRY_MAX is related: V4L2_FRAME_DESC_ENTRY_MAX * restricts the total number of streams in a pad, although the stream ID is * not restricted. */ #define V4L2_SUBDEV_MAX_STREAM_ID … #include "v4l2-subdev-priv.h" #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd) { … } static void subdev_fh_free(struct v4l2_subdev_fh *fh) { … } static int subdev_open(struct file *file) { … } static int subdev_close(struct file *file) { … } #else /* CONFIG_VIDEO_V4L2_SUBDEV_API */ static int subdev_open(struct file *file) { return -ENODEV; } static int subdev_close(struct file *file) { return -ENODEV; } #endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ static void v4l2_subdev_enable_privacy_led(struct v4l2_subdev *sd) { … } static void v4l2_subdev_disable_privacy_led(struct v4l2_subdev *sd) { … } static inline int check_which(u32 which) { … } static inline int check_pad(struct v4l2_subdev *sd, u32 pad) { … } static int check_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 which, u32 pad, u32 stream) { … } static inline int check_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { … } static int call_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { … } static int call_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { … } static int call_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_mbus_code_enum *code) { … } static int call_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_size_enum *fse) { … } static int call_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval_enum *fie) { … } static inline int check_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel) { … } static int call_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel) { … } static int call_set_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel) { … } static inline int check_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval *fi) { … } static int call_get_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval *fi) { … } static int call_set_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval *fi) { … } static int call_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_frame_desc *fd) { … } static inline int check_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) { … } static int call_get_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) { … } static int call_set_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) { … } static int call_s_dv_timings(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_dv_timings *timings) { … } static int call_g_dv_timings(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_dv_timings *timings) { … } static int call_query_dv_timings(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_dv_timings *timings) { … } static int call_dv_timings_cap(struct v4l2_subdev *sd, struct v4l2_dv_timings_cap *cap) { … } static int call_enum_dv_timings(struct v4l2_subdev *sd, struct v4l2_enum_dv_timings *dvt) { … } static int call_get_mbus_config(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_config *config) { … } static int call_s_stream(struct v4l2_subdev *sd, int enable) { … } #ifdef CONFIG_MEDIA_CONTROLLER /* * Create state-management wrapper for pad ops dealing with subdev state. The * wrapper handles the case where the caller does not provide the called * subdev's state. This should be removed when all the callers are fixed. */ #define DEFINE_STATE_WRAPPER(f, arg_type) … #else /* CONFIG_MEDIA_CONTROLLER */ #define DEFINE_STATE_WRAPPER … #endif /* CONFIG_MEDIA_CONTROLLER */ DEFINE_STATE_WRAPPER(get_fmt, struct v4l2_subdev_format); DEFINE_STATE_WRAPPER(set_fmt, struct v4l2_subdev_format); DEFINE_STATE_WRAPPER(enum_mbus_code, struct v4l2_subdev_mbus_code_enum); DEFINE_STATE_WRAPPER(enum_frame_size, struct v4l2_subdev_frame_size_enum); DEFINE_STATE_WRAPPER(enum_frame_interval, struct v4l2_subdev_frame_interval_enum); DEFINE_STATE_WRAPPER(get_selection, struct v4l2_subdev_selection); DEFINE_STATE_WRAPPER(set_selection, struct v4l2_subdev_selection); static const struct v4l2_subdev_pad_ops v4l2_subdev_call_pad_wrappers = …; static const struct v4l2_subdev_video_ops v4l2_subdev_call_video_wrappers = …; const struct v4l2_subdev_ops v4l2_subdev_call_wrappers = …; EXPORT_SYMBOL(…); #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) static struct v4l2_subdev_state * subdev_ioctl_get_state(struct v4l2_subdev *sd, struct v4l2_subdev_fh *subdev_fh, unsigned int cmd, void *arg) { … } static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg, struct v4l2_subdev_state *state) { … } static long subdev_do_ioctl_lock(struct file *file, unsigned int cmd, void *arg) { … } static long subdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { … } #ifdef CONFIG_COMPAT static long subdev_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg) { … } #endif #else /* CONFIG_VIDEO_V4L2_SUBDEV_API */ static long subdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { return -ENODEV; } #ifdef CONFIG_COMPAT static long subdev_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg) { return -ENODEV; } #endif #endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ static __poll_t subdev_poll(struct file *file, poll_table *wait) { … } const struct v4l2_file_operations v4l2_subdev_fops = …; #ifdef CONFIG_MEDIA_CONTROLLER int v4l2_subdev_get_fwnode_pad_1_to_1(struct media_entity *entity, struct fwnode_endpoint *endpoint) { … } EXPORT_SYMBOL_GPL(…); int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd, struct media_link *link, struct v4l2_subdev_format *source_fmt, struct v4l2_subdev_format *sink_fmt) { … } EXPORT_SYMBOL_GPL(…); static int v4l2_subdev_link_validate_get_format(struct media_pad *pad, u32 stream, struct v4l2_subdev_format *fmt, bool states_locked) { … } #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) static void __v4l2_link_validate_get_streams(struct media_pad *pad, u64 *streams_mask, bool states_locked) { … } #endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ static void v4l2_link_validate_get_streams(struct media_pad *pad, u64 *streams_mask, bool states_locked) { … } static int v4l2_subdev_link_validate_locked(struct media_link *link, bool states_locked) { … } int v4l2_subdev_link_validate(struct media_link *link) { … } EXPORT_SYMBOL_GPL(…); bool v4l2_subdev_has_pad_interdep(struct media_entity *entity, unsigned int pad0, unsigned int pad1) { … } EXPORT_SYMBOL_GPL(…); struct v4l2_subdev_state * __v4l2_subdev_state_alloc(struct v4l2_subdev *sd, const char *lock_name, struct lock_class_key *lock_key) { … } EXPORT_SYMBOL_GPL(…); void __v4l2_subdev_state_free(struct v4l2_subdev_state *state) { … } EXPORT_SYMBOL_GPL(…); int __v4l2_subdev_init_finalize(struct v4l2_subdev *sd, const char *name, struct lock_class_key *key) { … } EXPORT_SYMBOL_GPL(…); void v4l2_subdev_cleanup(struct v4l2_subdev *sd) { … } EXPORT_SYMBOL_GPL(…); struct v4l2_mbus_framefmt * __v4l2_subdev_state_get_format(struct v4l2_subdev_state *state, unsigned int pad, u32 stream) { … } EXPORT_SYMBOL_GPL(…); struct v4l2_rect * __v4l2_subdev_state_get_crop(struct v4l2_subdev_state *state, unsigned int pad, u32 stream) { … } EXPORT_SYMBOL_GPL(…); struct v4l2_rect * __v4l2_subdev_state_get_compose(struct v4l2_subdev_state *state, unsigned int pad, u32 stream) { … } EXPORT_SYMBOL_GPL(…); struct v4l2_fract * __v4l2_subdev_state_get_interval(struct v4l2_subdev_state *state, unsigned int pad, u32 stream) { … } EXPORT_SYMBOL_GPL(…); #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) static int v4l2_subdev_init_stream_configs(struct v4l2_subdev_stream_configs *stream_configs, const struct v4l2_subdev_krouting *routing) { … } int v4l2_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { … } EXPORT_SYMBOL_GPL(…); int v4l2_subdev_get_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_interval *fi) { … } EXPORT_SYMBOL_GPL(…); int v4l2_subdev_set_routing(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, const struct v4l2_subdev_krouting *routing) { … } EXPORT_SYMBOL_GPL(…); struct v4l2_subdev_route * __v4l2_subdev_next_active_route(const struct v4l2_subdev_krouting *routing, struct v4l2_subdev_route *route) { … } EXPORT_SYMBOL_GPL(…); int v4l2_subdev_set_routing_with_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, const struct v4l2_subdev_krouting *routing, const struct v4l2_mbus_framefmt *fmt) { … } EXPORT_SYMBOL_GPL(…); int v4l2_subdev_routing_find_opposite_end(const struct v4l2_subdev_krouting *routing, u32 pad, u32 stream, u32 *other_pad, u32 *other_stream) { … } EXPORT_SYMBOL_GPL(…); struct v4l2_mbus_framefmt * v4l2_subdev_state_get_opposite_stream_format(struct v4l2_subdev_state *state, u32 pad, u32 stream) { … } EXPORT_SYMBOL_GPL(…); u64 v4l2_subdev_state_xlate_streams(const struct v4l2_subdev_state *state, u32 pad0, u32 pad1, u64 *streams) { … } EXPORT_SYMBOL_GPL(…); int v4l2_subdev_routing_validate(struct v4l2_subdev *sd, const struct v4l2_subdev_krouting *routing, enum v4l2_subdev_routing_restriction disallow) { … } EXPORT_SYMBOL_GPL(…); static void v4l2_subdev_collect_streams(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 pad, u64 streams_mask, u64 *found_streams, u64 *enabled_streams) { … } static void v4l2_subdev_set_streams_enabled(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 pad, u64 streams_mask, bool enabled) { … } int v4l2_subdev_enable_streams(struct v4l2_subdev *sd, u32 pad, u64 streams_mask) { … } EXPORT_SYMBOL_GPL(…); int v4l2_subdev_disable_streams(struct v4l2_subdev *sd, u32 pad, u64 streams_mask) { … } EXPORT_SYMBOL_GPL(…); int v4l2_subdev_s_stream_helper(struct v4l2_subdev *sd, int enable) { … } EXPORT_SYMBOL_GPL(…); #endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ #endif /* CONFIG_MEDIA_CONTROLLER */ void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) { … } EXPORT_SYMBOL(…); void v4l2_subdev_notify_event(struct v4l2_subdev *sd, const struct v4l2_event *ev) { … } EXPORT_SYMBOL_GPL(…); bool v4l2_subdev_is_streaming(struct v4l2_subdev *sd) { … } EXPORT_SYMBOL_GPL(…); int v4l2_subdev_get_privacy_led(struct v4l2_subdev *sd) { … } EXPORT_SYMBOL_GPL(…); void v4l2_subdev_put_privacy_led(struct v4l2_subdev *sd) { … } EXPORT_SYMBOL_GPL(…);
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