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usb: gadget: uvc: Add struct for color matching in configs

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Color matching descriptors are meant to be a per-format piece of data
and we need to be able to support different descriptors for different
formats. As a preliminary step towards that goal, switch the default
color matching configfs functionality to point to an instance of a
new struct uvcg_color_matching. Use the same default values for its
attributes as the currently hard-coded ones so that the interface to
userspace is consistent.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Link: https://lore.kernel.org/r/20230202114142.300858-3-dan.scally@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Daniel Scally
2023-02-02 11:41:38 +00:00
committed by Greg Kroah-Hartman
parent e16cab9c15
commit 744eb7b821
2 changed files with 52 additions and 14 deletions
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8
drivers/usb/gadget/function/uvc_configfs.h
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@@ -37,6 +37,14 @@ static inline struct uvcg_control_header *to_uvcg_control_header(struct config_i
return container_of(item, struct uvcg_control_header, item);
}
struct uvcg_color_matching {
struct config_group group;
struct uvc_color_matching_descriptor desc;
};
#define to_uvcg_color_matching(group_ptr) \
container_of(group_ptr, struct uvcg_color_matching, group)
enum uvcg_format_type {
UVCG_UNCOMPRESSED = 0,
UVCG_MJPEG,