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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/usb/gadget/function/uvc_configfs.h
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/usb/gadget/function/uvc_configfs.h')
-rw-r--r--drivers/usb/gadget/function/uvc_configfs.h137
1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/uvc_configfs.h b/drivers/usb/gadget/function/uvc_configfs.h
new file mode 100644
index 000000000..ad2ec8c4c
--- /dev/null
+++ b/drivers/usb/gadget/function/uvc_configfs.h
@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * uvc_configfs.h
+ *
+ * Configfs support for the uvc function.
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
+ */
+#ifndef UVC_CONFIGFS_H
+#define UVC_CONFIGFS_H
+
+#include <linux/configfs.h>
+
+#include "u_uvc.h"
+
+static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct f_uvc_opts,
+ func_inst.group);
+}
+
+#define UVCG_STREAMING_CONTROL_SIZE 1
+
+DECLARE_UVC_HEADER_DESCRIPTOR(1);
+
+struct uvcg_control_header {
+ struct config_item item;
+ struct UVC_HEADER_DESCRIPTOR(1) desc;
+ unsigned linked;
+};
+
+static inline struct uvcg_control_header *to_uvcg_control_header(struct config_item *item)
+{
+ return container_of(item, struct uvcg_control_header, item);
+}
+
+enum uvcg_format_type {
+ UVCG_UNCOMPRESSED = 0,
+ UVCG_MJPEG,
+};
+
+struct uvcg_format {
+ struct config_group group;
+ enum uvcg_format_type type;
+ unsigned linked;
+ struct list_head frames;
+ unsigned num_frames;
+ __u8 bmaControls[UVCG_STREAMING_CONTROL_SIZE];
+};
+
+struct uvcg_format_ptr {
+ struct uvcg_format *fmt;
+ struct list_head entry;
+};
+
+static inline struct uvcg_format *to_uvcg_format(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct uvcg_format, group);
+}
+
+struct uvcg_streaming_header {
+ struct config_item item;
+ struct uvc_input_header_descriptor desc;
+ unsigned linked;
+ struct list_head formats;
+ unsigned num_fmt;
+};
+
+static inline struct uvcg_streaming_header *to_uvcg_streaming_header(struct config_item *item)
+{
+ return container_of(item, struct uvcg_streaming_header, item);
+}
+
+struct uvcg_frame_ptr {
+ struct uvcg_frame *frm;
+ struct list_head entry;
+};
+
+struct uvcg_frame {
+ struct config_item item;
+ enum uvcg_format_type fmt_type;
+ struct {
+ u8 b_length;
+ u8 b_descriptor_type;
+ u8 b_descriptor_subtype;
+ u8 b_frame_index;
+ u8 bm_capabilities;
+ u16 w_width;
+ u16 w_height;
+ u32 dw_min_bit_rate;
+ u32 dw_max_bit_rate;
+ u32 dw_max_video_frame_buffer_size;
+ u32 dw_default_frame_interval;
+ u8 b_frame_interval_type;
+ } __attribute__((packed)) frame;
+ u32 *dw_frame_interval;
+};
+
+static inline struct uvcg_frame *to_uvcg_frame(struct config_item *item)
+{
+ return container_of(item, struct uvcg_frame, item);
+}
+
+/* -----------------------------------------------------------------------------
+ * streaming/uncompressed/<NAME>
+ */
+
+struct uvcg_uncompressed {
+ struct uvcg_format fmt;
+ struct uvc_format_uncompressed desc;
+};
+
+static inline struct uvcg_uncompressed *to_uvcg_uncompressed(struct config_item *item)
+{
+ return container_of(to_uvcg_format(item), struct uvcg_uncompressed, fmt);
+}
+
+/* -----------------------------------------------------------------------------
+ * streaming/mjpeg/<NAME>
+ */
+
+struct uvcg_mjpeg {
+ struct uvcg_format fmt;
+ struct uvc_format_mjpeg desc;
+};
+
+static inline struct uvcg_mjpeg *to_uvcg_mjpeg(struct config_item *item)
+{
+ return container_of(to_uvcg_format(item), struct uvcg_mjpeg, fmt);
+}
+
+int uvcg_attach_configfs(struct f_uvc_opts *opts);
+
+#endif /* UVC_CONFIGFS_H */