return 0;
}
-static int check_state_pads(u32 which, struct v4l2_subdev_state *state)
+static int check_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *state,
+ u32 which, u32 pad, u32 stream)
{
+ if (sd->flags & V4L2_SUBDEV_FL_STREAMS) {
+#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
+ if (!v4l2_subdev_state_get_stream_format(state, pad, stream))
+ return -EINVAL;
+ return 0;
+#else
+ return -EINVAL;
+#endif
+ }
+
+ if (stream != 0)
+ return -EINVAL;
+
if (which == V4L2_SUBDEV_FORMAT_TRY && (!state || !state->pads))
return -EINVAL;
return -EINVAL;
return check_which(format->which) ? : check_pad(sd, format->pad) ? :
- check_state_pads(format->which, state);
+ check_state(sd, state, format->which, format->pad, format->stream);
}
static int call_get_fmt(struct v4l2_subdev *sd,
return -EINVAL;
return check_which(code->which) ? : check_pad(sd, code->pad) ? :
- check_state_pads(code->which, state) ? :
+ check_state(sd, state, code->which, code->pad, code->stream) ? :
sd->ops->pad->enum_mbus_code(sd, state, code);
}
return -EINVAL;
return check_which(fse->which) ? : check_pad(sd, fse->pad) ? :
- check_state_pads(fse->which, state) ? :
+ check_state(sd, state, fse->which, fse->pad, fse->stream) ? :
sd->ops->pad->enum_frame_size(sd, state, fse);
}
return -EINVAL;
return check_which(fie->which) ? : check_pad(sd, fie->pad) ? :
- check_state_pads(fie->which, state) ? :
+ check_state(sd, state, fie->which, fie->pad, fie->stream) ? :
sd->ops->pad->enum_frame_interval(sd, state, fie);
}
return -EINVAL;
return check_which(sel->which) ? : check_pad(sd, sel->pad) ? :
- check_state_pads(sel->which, state);
+ check_state(sd, state, sel->which, sel->pad, sel->stream);
}
static int call_get_selection(struct v4l2_subdev *sd,
else
state->lock = &state->_lock;
- if (sd->entity.num_pads) {
+ /* Drivers that support streams do not need the legacy pad config */
+ if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS) && sd->entity.num_pads) {
state->pads = kvcalloc(sd->entity.num_pads,
sizeof(*state->pads), GFP_KERNEL);
if (!state->pads) {
mutex_destroy(&state->_lock);
kfree(state->routing.routes);
+ kvfree(state->stream_configs.configs);
kvfree(state->pads);
kfree(state);
}
#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)
+{
+ struct v4l2_subdev_stream_configs new_configs = { 0 };
+ struct v4l2_subdev_route *route;
+ u32 idx;
+
+ /* Count number of formats needed */
+ for_each_active_route(routing, route) {
+ /*
+ * Each route needs a format on both ends of the route.
+ */
+ new_configs.num_configs += 2;
+ }
+
+ if (new_configs.num_configs) {
+ new_configs.configs = kvcalloc(new_configs.num_configs,
+ sizeof(*new_configs.configs),
+ GFP_KERNEL);
+
+ if (!new_configs.configs)
+ return -ENOMEM;
+ }
+
+ /*
+ * Fill in the 'pad' and stream' value for each item in the array from
+ * the routing table
+ */
+ idx = 0;
+
+ for_each_active_route(routing, route) {
+ new_configs.configs[idx].pad = route->sink_pad;
+ new_configs.configs[idx].stream = route->sink_stream;
+
+ idx++;
+
+ new_configs.configs[idx].pad = route->source_pad;
+ new_configs.configs[idx].stream = route->source_stream;
+
+ idx++;
+ }
+
+ kvfree(stream_configs->configs);
+ *stream_configs = new_configs;
+
+ return 0;
+}
+
int v4l2_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state,
struct v4l2_subdev_format *format)
{
const struct v4l2_subdev_krouting *src = routing;
struct v4l2_subdev_krouting new_routing = { 0 };
size_t bytes;
+ int r;
if (unlikely(check_mul_overflow((size_t)src->num_routes,
sizeof(*src->routes), &bytes)))
new_routing.num_routes = src->num_routes;
+ r = v4l2_subdev_init_stream_configs(&state->stream_configs,
+ &new_routing);
+ if (r) {
+ kfree(new_routing.routes);
+ return r;
+ }
+
kfree(dst->routes);
*dst = new_routing;
}
EXPORT_SYMBOL_GPL(__v4l2_subdev_next_active_route);
+struct v4l2_mbus_framefmt *
+v4l2_subdev_state_get_stream_format(struct v4l2_subdev_state *state,
+ unsigned int pad, u32 stream)
+{
+ struct v4l2_subdev_stream_configs *stream_configs;
+ unsigned int i;
+
+ lockdep_assert_held(state->lock);
+
+ stream_configs = &state->stream_configs;
+
+ for (i = 0; i < stream_configs->num_configs; ++i) {
+ if (stream_configs->configs[i].pad == pad &&
+ stream_configs->configs[i].stream == stream)
+ return &stream_configs->configs[i].fmt;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(v4l2_subdev_state_get_stream_format);
+
+struct v4l2_rect *
+v4l2_subdev_state_get_stream_crop(struct v4l2_subdev_state *state,
+ unsigned int pad, u32 stream)
+{
+ struct v4l2_subdev_stream_configs *stream_configs;
+ unsigned int i;
+
+ lockdep_assert_held(state->lock);
+
+ stream_configs = &state->stream_configs;
+
+ for (i = 0; i < stream_configs->num_configs; ++i) {
+ if (stream_configs->configs[i].pad == pad &&
+ stream_configs->configs[i].stream == stream)
+ return &stream_configs->configs[i].crop;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(v4l2_subdev_state_get_stream_crop);
+
+struct v4l2_rect *
+v4l2_subdev_state_get_stream_compose(struct v4l2_subdev_state *state,
+ unsigned int pad, u32 stream)
+{
+ struct v4l2_subdev_stream_configs *stream_configs;
+ unsigned int i;
+
+ lockdep_assert_held(state->lock);
+
+ stream_configs = &state->stream_configs;
+
+ for (i = 0; i < stream_configs->num_configs; ++i) {
+ if (stream_configs->configs[i].pad == pad &&
+ stream_configs->configs[i].stream == stream)
+ return &stream_configs->configs[i].compose;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(v4l2_subdev_state_get_stream_compose);
+
#endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */
#endif /* CONFIG_MEDIA_CONTROLLER */
struct v4l2_rect try_compose;
};
+/**
+ * struct v4l2_subdev_stream_config - Used for storing stream configuration.
+ *
+ * @pad: pad number
+ * @stream: stream number
+ * @fmt: &struct v4l2_mbus_framefmt
+ * @crop: &struct v4l2_rect to be used for crop
+ * @compose: &struct v4l2_rect to be used for compose
+ *
+ * This structure stores configuration for a stream.
+ */
+struct v4l2_subdev_stream_config {
+ u32 pad;
+ u32 stream;
+
+ struct v4l2_mbus_framefmt fmt;
+ struct v4l2_rect crop;
+ struct v4l2_rect compose;
+};
+
+/**
+ * struct v4l2_subdev_stream_configs - A collection of stream configs.
+ *
+ * @num_configs: number of entries in @config.
+ * @configs: an array of &struct v4l2_subdev_stream_configs.
+ */
+struct v4l2_subdev_stream_configs {
+ u32 num_configs;
+ struct v4l2_subdev_stream_config *configs;
+};
+
/**
* struct v4l2_subdev_krouting - subdev routing table
*
* @lock: mutex for the state. May be replaced by the user.
* @pads: &struct v4l2_subdev_pad_config array
* @routing: routing table for the subdev
+ * @stream_configs: stream configurations (only for V4L2_SUBDEV_FL_STREAMS)
*
* This structure only needs to be passed to the pad op if the 'which' field
* of the main argument is set to %V4L2_SUBDEV_FORMAT_TRY. For
struct mutex *lock;
struct v4l2_subdev_pad_config *pads;
struct v4l2_subdev_krouting routing;
+ struct v4l2_subdev_stream_configs stream_configs;
};
/**
for ((route) = NULL; \
((route) = __v4l2_subdev_next_active_route((routing), (route)));)
+/**
+ * v4l2_subdev_state_get_stream_format() - Get pointer to a stream format
+ * @state: subdevice state
+ * @pad: pad id
+ * @stream: stream id
+ *
+ * This returns a pointer to &struct v4l2_mbus_framefmt for the given pad +
+ * stream in the subdev state.
+ *
+ * If the state does not contain the given pad + stream, NULL is returned.
+ */
+struct v4l2_mbus_framefmt *
+v4l2_subdev_state_get_stream_format(struct v4l2_subdev_state *state,
+ unsigned int pad, u32 stream);
+
+/**
+ * v4l2_subdev_state_get_stream_crop() - Get pointer to a stream crop rectangle
+ * @state: subdevice state
+ * @pad: pad id
+ * @stream: stream id
+ *
+ * This returns a pointer to crop rectangle for the given pad + stream in the
+ * subdev state.
+ *
+ * If the state does not contain the given pad + stream, NULL is returned.
+ */
+struct v4l2_rect *
+v4l2_subdev_state_get_stream_crop(struct v4l2_subdev_state *state,
+ unsigned int pad, u32 stream);
+
+/**
+ * v4l2_subdev_state_get_stream_compose() - Get pointer to a stream compose
+ * rectangle
+ * @state: subdevice state
+ * @pad: pad id
+ * @stream: stream id
+ *
+ * This returns a pointer to compose rectangle for the given pad + stream in the
+ * subdev state.
+ *
+ * If the state does not contain the given pad + stream, NULL is returned.
+ */
+struct v4l2_rect *
+v4l2_subdev_state_get_stream_compose(struct v4l2_subdev_state *state,
+ unsigned int pad, u32 stream);
+
#endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */
#endif /* CONFIG_MEDIA_CONTROLLER */
* @which: format type (from enum v4l2_subdev_format_whence)
* @pad: pad number, as reported by the media API
* @format: media bus format (format code and frame size)
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_format {
__u32 which;
__u32 pad;
struct v4l2_mbus_framefmt format;
- __u32 reserved[8];
+ __u32 stream;
+ __u32 reserved[7];
};
/**
* @which: format type (from enum v4l2_subdev_format_whence)
* @pad: pad number, as reported by the media API
* @rect: pad crop rectangle boundaries
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_crop {
__u32 which;
__u32 pad;
struct v4l2_rect rect;
- __u32 reserved[8];
+ __u32 stream;
+ __u32 reserved[7];
};
#define V4L2_SUBDEV_MBUS_CODE_CSC_COLORSPACE 0x00000001
* @code: format code (MEDIA_BUS_FMT_ definitions)
* @which: format type (from enum v4l2_subdev_format_whence)
* @flags: flags set by the driver, (V4L2_SUBDEV_MBUS_CODE_*)
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_mbus_code_enum {
__u32 code;
__u32 which;
__u32 flags;
- __u32 reserved[7];
+ __u32 stream;
+ __u32 reserved[6];
};
/**
* @min_height: minimum frame height, in pixels
* @max_height: maximum frame height, in pixels
* @which: format type (from enum v4l2_subdev_format_whence)
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_frame_size_enum {
__u32 min_height;
__u32 max_height;
__u32 which;
- __u32 reserved[8];
+ __u32 stream;
+ __u32 reserved[7];
};
/**
* struct v4l2_subdev_frame_interval - Pad-level frame rate
* @pad: pad number, as reported by the media API
* @interval: frame interval in seconds
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_frame_interval {
__u32 pad;
struct v4l2_fract interval;
- __u32 reserved[9];
+ __u32 stream;
+ __u32 reserved[8];
};
/**
* @height: frame height in pixels
* @interval: frame interval in seconds
* @which: format type (from enum v4l2_subdev_format_whence)
+ * @stream: stream number, defined in subdev routing
* @reserved: drivers and applications must zero this array
*/
struct v4l2_subdev_frame_interval_enum {
__u32 height;
struct v4l2_fract interval;
__u32 which;
- __u32 reserved[8];
+ __u32 stream;
+ __u32 reserved[7];
};
/**
* defined in v4l2-common.h; V4L2_SEL_TGT_* .
* @flags: constraint flags, defined in v4l2-common.h; V4L2_SEL_FLAG_*.
* @r: coordinates of the selection window
+ * @stream: stream number, defined in subdev routing
* @reserved: for future use, set to zero for now
*
* Hardware may use multiple helper windows to process a video stream.
__u32 target;
__u32 flags;
struct v4l2_rect r;
- __u32 reserved[8];
+ __u32 stream;
+ __u32 reserved[7];
};
/**
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