usb: gadget: uvc: configfs: Add section header comments
The UVC configfs implementation is large and difficult to navigate. Add a bit more air to the code to make it easier to read. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Laurent Pinchart
Родитель
b0aa30f33b
Коммит
f7d8109e31
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@ -12,6 +12,10 @@
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#include "u_uvc.h"
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#include "uvc_configfs.h"
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/* -----------------------------------------------------------------------------
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* Global Utility Structures and Macros
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*/
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#define UVCG_STREAMING_CONTROL_SIZE 1
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#define UVC_ATTR(prefix, cname, aname) \
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@ -37,7 +41,11 @@ static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item)
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func_inst.group);
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}
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/* control/header/<NAME> */
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/* -----------------------------------------------------------------------------
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* control/header/<NAME>
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* control/header
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*/
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DECLARE_UVC_HEADER_DESCRIPTOR(1);
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struct uvcg_control_header {
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@ -161,7 +169,6 @@ static void uvcg_control_header_drop(struct config_group *group,
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kfree(h);
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}
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/* control/header */
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static struct config_group uvcg_control_header_grp;
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static struct configfs_group_operations uvcg_control_header_grp_ops = {
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@ -174,7 +181,10 @@ static const struct config_item_type uvcg_control_header_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* control/processing/default */
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/* -----------------------------------------------------------------------------
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* control/processing/default
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*/
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static struct config_group uvcg_default_processing_grp;
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#define UVCG_DEFAULT_PROCESSING_ATTR(cname, aname, conv) \
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@ -260,16 +270,20 @@ static const struct config_item_type uvcg_default_processing_type = {
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.ct_owner = THIS_MODULE,
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};
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/* struct uvcg_processing {}; */
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/* -----------------------------------------------------------------------------
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* control/processing
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*/
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/* control/processing */
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static struct config_group uvcg_processing_grp;
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static const struct config_item_type uvcg_processing_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* control/terminal/camera/default */
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/* -----------------------------------------------------------------------------
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* control/terminal/camera/default
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*/
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static struct config_group uvcg_default_camera_grp;
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#define UVCG_DEFAULT_CAMERA_ATTR(cname, aname, conv) \
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@ -366,16 +380,20 @@ static const struct config_item_type uvcg_default_camera_type = {
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.ct_owner = THIS_MODULE,
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};
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/* struct uvcg_camera {}; */
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/* -----------------------------------------------------------------------------
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* control/terminal/camera
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*/
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/* control/terminal/camera */
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static struct config_group uvcg_camera_grp;
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static const struct config_item_type uvcg_camera_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* control/terminal/output/default */
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/* -----------------------------------------------------------------------------
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* control/terminal/output/default
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*/
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static struct config_group uvcg_default_output_grp;
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#define UVCG_DEFAULT_OUTPUT_ATTR(cname, aname, conv) \
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@ -433,23 +451,30 @@ static const struct config_item_type uvcg_default_output_type = {
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.ct_owner = THIS_MODULE,
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};
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/* struct uvcg_output {}; */
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/* -----------------------------------------------------------------------------
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* control/terminal/output
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*/
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/* control/terminal/output */
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static struct config_group uvcg_output_grp;
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static const struct config_item_type uvcg_output_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* control/terminal */
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/* -----------------------------------------------------------------------------
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* control/terminal
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*/
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static struct config_group uvcg_terminal_grp;
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static const struct config_item_type uvcg_terminal_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* control/class/{fs} */
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/* -----------------------------------------------------------------------------
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* control/class/{fs|ss}
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*/
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static struct config_group uvcg_control_class_fs_grp;
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static struct config_group uvcg_control_class_ss_grp;
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@ -552,24 +577,32 @@ static const struct config_item_type uvcg_control_class_type = {
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.ct_owner = THIS_MODULE,
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};
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/* control/class */
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/* -----------------------------------------------------------------------------
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* control/class
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*/
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static struct config_group uvcg_control_class_grp;
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static const struct config_item_type uvcg_control_class_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* control */
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/* -----------------------------------------------------------------------------
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* control
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*/
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static struct config_group uvcg_control_grp;
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static const struct config_item_type uvcg_control_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* streaming/uncompressed */
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static struct config_group uvcg_uncompressed_grp;
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/* -----------------------------------------------------------------------------
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* streaming/uncompressed
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* streaming/mjpeg
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*/
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/* streaming/mjpeg */
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static struct config_group uvcg_uncompressed_grp;
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static struct config_group uvcg_mjpeg_grp;
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static struct config_item *fmt_parent[] = {
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@ -658,7 +691,11 @@ struct uvcg_format_ptr {
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struct list_head entry;
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};
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/* streaming/header/<NAME> */
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/* -----------------------------------------------------------------------------
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* streaming/header/<NAME>
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* streaming/header
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*/
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struct uvcg_streaming_header {
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struct config_item item;
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struct uvc_input_header_descriptor desc;
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@ -844,7 +881,6 @@ static void uvcg_streaming_header_drop(struct config_group *group,
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kfree(h);
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}
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/* streaming/header */
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static struct config_group uvcg_streaming_header_grp;
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static struct configfs_group_operations uvcg_streaming_header_grp_ops = {
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@ -857,7 +893,10 @@ static const struct config_item_type uvcg_streaming_header_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* streaming/<mode>/<format>/<NAME> */
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/* -----------------------------------------------------------------------------
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* streaming/<mode>/<format>/<NAME>
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*/
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struct uvcg_frame {
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struct {
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u8 b_length;
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@ -1168,7 +1207,10 @@ static void uvcg_frame_drop(struct config_group *group, struct config_item *item
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mutex_unlock(&opts->lock);
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}
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/* streaming/uncompressed/<NAME> */
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/* -----------------------------------------------------------------------------
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* streaming/uncompressed/<NAME>
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*/
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struct uvcg_uncompressed {
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struct uvcg_format fmt;
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struct uvc_format_uncompressed desc;
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@ -1425,7 +1467,10 @@ static const struct config_item_type uvcg_uncompressed_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* streaming/mjpeg/<NAME> */
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/* -----------------------------------------------------------------------------
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* streaming/mjpeg/<NAME>
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*/
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struct uvcg_mjpeg {
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struct uvcg_format fmt;
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struct uvc_format_mjpeg desc;
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@ -1619,7 +1664,10 @@ static const struct config_item_type uvcg_mjpeg_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* streaming/color_matching/default */
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/* -----------------------------------------------------------------------------
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* streaming/color_matching/default
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*/
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static struct config_group uvcg_default_color_matching_grp;
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#define UVCG_DEFAULT_COLOR_MATCHING_ATTR(cname, aname, conv) \
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@ -1674,16 +1722,20 @@ static const struct config_item_type uvcg_default_color_matching_type = {
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.ct_owner = THIS_MODULE,
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};
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/* struct uvcg_color_matching {}; */
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/* -----------------------------------------------------------------------------
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* streaming/color_matching
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*/
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/* streaming/color_matching */
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static struct config_group uvcg_color_matching_grp;
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static const struct config_item_type uvcg_color_matching_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* streaming/class/{fs|hs|ss} */
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/* -----------------------------------------------------------------------------
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* streaming/class/{fs|hs|ss}
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*/
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static struct config_group uvcg_streaming_class_fs_grp;
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static struct config_group uvcg_streaming_class_hs_grp;
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static struct config_group uvcg_streaming_class_ss_grp;
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@ -2027,20 +2079,30 @@ static const struct config_item_type uvcg_streaming_class_type = {
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.ct_owner = THIS_MODULE,
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};
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/* streaming/class */
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/* -----------------------------------------------------------------------------
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* streaming/class
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*/
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static struct config_group uvcg_streaming_class_grp;
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static const struct config_item_type uvcg_streaming_class_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* streaming */
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/* -----------------------------------------------------------------------------
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* streaming
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*/
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static struct config_group uvcg_streaming_grp;
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static const struct config_item_type uvcg_streaming_grp_type = {
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.ct_owner = THIS_MODULE,
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};
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/* -----------------------------------------------------------------------------
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* UVC function
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*/
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static void uvc_attr_release(struct config_item *item)
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{
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struct f_uvc_opts *opts = to_f_uvc_opts(item);
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