2468 строки
66 KiB
C
2468 строки
66 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* uvc_configfs.c
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*
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* Configfs support for the uvc function.
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*
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* Copyright (c) 2014 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
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*/
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#include <linux/sort.h>
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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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static struct configfs_attribute prefix##attr_##cname = { \
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.ca_name = __stringify(aname), \
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.ca_mode = S_IRUGO | S_IWUGO, \
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.ca_owner = THIS_MODULE, \
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.show = prefix##cname##_show, \
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.store = prefix##cname##_store, \
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}
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#define UVC_ATTR_RO(prefix, cname, aname) \
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static struct configfs_attribute prefix##attr_##cname = { \
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.ca_name = __stringify(aname), \
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.ca_mode = S_IRUGO, \
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.ca_owner = THIS_MODULE, \
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.show = prefix##cname##_show, \
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}
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#define le8_to_cpu(x) (x)
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#define cpu_to_le8(x) (x)
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static int uvcg_config_compare_u32(const void *l, const void *r)
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{
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u32 li = *(const u32 *)l;
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u32 ri = *(const u32 *)r;
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return li < ri ? -1 : li == ri ? 0 : 1;
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}
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static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item)
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{
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return container_of(to_config_group(item), struct f_uvc_opts,
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func_inst.group);
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}
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struct uvcg_config_group_type {
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struct config_item_type type;
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const char *name;
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const struct uvcg_config_group_type **children;
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int (*create_children)(struct config_group *group);
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};
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static void uvcg_config_item_release(struct config_item *item)
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{
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struct config_group *group = to_config_group(item);
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kfree(group);
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}
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static struct configfs_item_operations uvcg_config_item_ops = {
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.release = uvcg_config_item_release,
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};
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static int uvcg_config_create_group(struct config_group *parent,
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const struct uvcg_config_group_type *type);
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static int uvcg_config_create_children(struct config_group *group,
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const struct uvcg_config_group_type *type)
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{
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const struct uvcg_config_group_type **child;
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int ret;
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if (type->create_children)
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return type->create_children(group);
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for (child = type->children; child && *child; ++child) {
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ret = uvcg_config_create_group(group, *child);
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if (ret < 0)
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return ret;
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}
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return 0;
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}
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static int uvcg_config_create_group(struct config_group *parent,
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const struct uvcg_config_group_type *type)
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{
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struct config_group *group;
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group = kzalloc(sizeof(*group), GFP_KERNEL);
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if (!group)
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return -ENOMEM;
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config_group_init_type_name(group, type->name, &type->type);
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configfs_add_default_group(group, parent);
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return uvcg_config_create_children(group, type);
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}
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static void uvcg_config_remove_children(struct config_group *group)
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{
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struct config_group *child, *n;
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list_for_each_entry_safe(child, n, &group->default_groups, group_entry) {
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list_del(&child->group_entry);
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uvcg_config_remove_children(child);
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config_item_put(&child->cg_item);
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}
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}
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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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struct config_item item;
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struct UVC_HEADER_DESCRIPTOR(1) desc;
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unsigned linked;
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};
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static struct uvcg_control_header *to_uvcg_control_header(struct config_item *item)
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{
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return container_of(item, struct uvcg_control_header, item);
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}
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#define UVCG_CTRL_HDR_ATTR(cname, aname, bits, limit) \
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static ssize_t uvcg_control_header_##cname##_show( \
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struct config_item *item, char *page) \
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{ \
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struct uvcg_control_header *ch = to_uvcg_control_header(item); \
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struct f_uvc_opts *opts; \
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struct config_item *opts_item; \
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struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex;\
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int result; \
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\
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mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
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\
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opts_item = ch->item.ci_parent->ci_parent->ci_parent; \
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opts = to_f_uvc_opts(opts_item); \
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\
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mutex_lock(&opts->lock); \
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result = sprintf(page, "%u\n", le##bits##_to_cpu(ch->desc.aname));\
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mutex_unlock(&opts->lock); \
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\
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mutex_unlock(su_mutex); \
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return result; \
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} \
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\
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static ssize_t \
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uvcg_control_header_##cname##_store(struct config_item *item, \
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const char *page, size_t len) \
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{ \
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struct uvcg_control_header *ch = to_uvcg_control_header(item); \
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struct f_uvc_opts *opts; \
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struct config_item *opts_item; \
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struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex;\
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int ret; \
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u##bits num; \
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\
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mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
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\
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opts_item = ch->item.ci_parent->ci_parent->ci_parent; \
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opts = to_f_uvc_opts(opts_item); \
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\
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mutex_lock(&opts->lock); \
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if (ch->linked || opts->refcnt) { \
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ret = -EBUSY; \
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goto end; \
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} \
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\
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ret = kstrtou##bits(page, 0, &num); \
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if (ret) \
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goto end; \
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\
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if (num > limit) { \
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ret = -EINVAL; \
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goto end; \
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} \
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ch->desc.aname = cpu_to_le##bits(num); \
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ret = len; \
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end: \
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mutex_unlock(&opts->lock); \
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mutex_unlock(su_mutex); \
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return ret; \
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} \
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\
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UVC_ATTR(uvcg_control_header_, cname, aname)
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UVCG_CTRL_HDR_ATTR(bcd_uvc, bcdUVC, 16, 0xffff);
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UVCG_CTRL_HDR_ATTR(dw_clock_frequency, dwClockFrequency, 32, 0x7fffffff);
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#undef UVCG_CTRL_HDR_ATTR
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static struct configfs_attribute *uvcg_control_header_attrs[] = {
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&uvcg_control_header_attr_bcd_uvc,
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&uvcg_control_header_attr_dw_clock_frequency,
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NULL,
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};
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static const struct config_item_type uvcg_control_header_type = {
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.ct_item_ops = &uvcg_config_item_ops,
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.ct_attrs = uvcg_control_header_attrs,
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.ct_owner = THIS_MODULE,
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};
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static struct config_item *uvcg_control_header_make(struct config_group *group,
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const char *name)
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{
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struct uvcg_control_header *h;
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h = kzalloc(sizeof(*h), GFP_KERNEL);
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if (!h)
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return ERR_PTR(-ENOMEM);
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h->desc.bLength = UVC_DT_HEADER_SIZE(1);
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h->desc.bDescriptorType = USB_DT_CS_INTERFACE;
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h->desc.bDescriptorSubType = UVC_VC_HEADER;
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h->desc.bcdUVC = cpu_to_le16(0x0100);
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h->desc.dwClockFrequency = cpu_to_le32(48000000);
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config_item_init_type_name(&h->item, name, &uvcg_control_header_type);
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return &h->item;
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}
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static struct configfs_group_operations uvcg_control_header_grp_ops = {
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.make_item = uvcg_control_header_make,
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};
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static const struct uvcg_config_group_type uvcg_control_header_grp_type = {
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.type = {
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.ct_item_ops = &uvcg_config_item_ops,
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.ct_group_ops = &uvcg_control_header_grp_ops,
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.ct_owner = THIS_MODULE,
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},
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.name = "header",
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};
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/* -----------------------------------------------------------------------------
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* control/processing/default
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*/
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#define UVCG_DEFAULT_PROCESSING_ATTR(cname, aname, bits) \
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static ssize_t uvcg_default_processing_##cname##_show( \
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struct config_item *item, char *page) \
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{ \
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struct config_group *group = to_config_group(item); \
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struct f_uvc_opts *opts; \
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struct config_item *opts_item; \
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struct mutex *su_mutex = &group->cg_subsys->su_mutex; \
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struct uvc_processing_unit_descriptor *pd; \
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int result; \
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\
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mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
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\
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opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; \
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opts = to_f_uvc_opts(opts_item); \
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pd = &opts->uvc_processing; \
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\
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mutex_lock(&opts->lock); \
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result = sprintf(page, "%u\n", le##bits##_to_cpu(pd->aname)); \
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mutex_unlock(&opts->lock); \
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\
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mutex_unlock(su_mutex); \
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return result; \
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} \
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\
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UVC_ATTR_RO(uvcg_default_processing_, cname, aname)
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UVCG_DEFAULT_PROCESSING_ATTR(b_unit_id, bUnitID, 8);
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UVCG_DEFAULT_PROCESSING_ATTR(b_source_id, bSourceID, 8);
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UVCG_DEFAULT_PROCESSING_ATTR(w_max_multiplier, wMaxMultiplier, 16);
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UVCG_DEFAULT_PROCESSING_ATTR(i_processing, iProcessing, 8);
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#undef UVCG_DEFAULT_PROCESSING_ATTR
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static ssize_t uvcg_default_processing_bm_controls_show(
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struct config_item *item, char *page)
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{
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struct config_group *group = to_config_group(item);
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struct f_uvc_opts *opts;
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struct config_item *opts_item;
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struct mutex *su_mutex = &group->cg_subsys->su_mutex;
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struct uvc_processing_unit_descriptor *pd;
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int result, i;
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char *pg = page;
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mutex_lock(su_mutex); /* for navigating configfs hierarchy */
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opts_item = group->cg_item.ci_parent->ci_parent->ci_parent;
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opts = to_f_uvc_opts(opts_item);
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pd = &opts->uvc_processing;
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mutex_lock(&opts->lock);
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for (result = 0, i = 0; i < pd->bControlSize; ++i) {
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result += sprintf(pg, "%u\n", pd->bmControls[i]);
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pg = page + result;
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}
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mutex_unlock(&opts->lock);
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mutex_unlock(su_mutex);
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return result;
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}
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UVC_ATTR_RO(uvcg_default_processing_, bm_controls, bmControls);
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static struct configfs_attribute *uvcg_default_processing_attrs[] = {
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&uvcg_default_processing_attr_b_unit_id,
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&uvcg_default_processing_attr_b_source_id,
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&uvcg_default_processing_attr_w_max_multiplier,
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&uvcg_default_processing_attr_bm_controls,
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&uvcg_default_processing_attr_i_processing,
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NULL,
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};
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static const struct uvcg_config_group_type uvcg_default_processing_type = {
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.type = {
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.ct_item_ops = &uvcg_config_item_ops,
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.ct_attrs = uvcg_default_processing_attrs,
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.ct_owner = THIS_MODULE,
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},
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.name = "default",
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};
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/* -----------------------------------------------------------------------------
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* control/processing
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*/
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static const struct uvcg_config_group_type uvcg_processing_grp_type = {
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.type = {
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.ct_item_ops = &uvcg_config_item_ops,
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.ct_owner = THIS_MODULE,
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},
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.name = "processing",
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.children = (const struct uvcg_config_group_type*[]) {
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&uvcg_default_processing_type,
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NULL,
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},
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};
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/* -----------------------------------------------------------------------------
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* control/terminal/camera/default
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*/
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#define UVCG_DEFAULT_CAMERA_ATTR(cname, aname, bits) \
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static ssize_t uvcg_default_camera_##cname##_show( \
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struct config_item *item, char *page) \
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{ \
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struct config_group *group = to_config_group(item); \
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struct f_uvc_opts *opts; \
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struct config_item *opts_item; \
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struct mutex *su_mutex = &group->cg_subsys->su_mutex; \
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struct uvc_camera_terminal_descriptor *cd; \
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int result; \
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\
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mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
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\
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opts_item = group->cg_item.ci_parent->ci_parent->ci_parent-> \
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ci_parent; \
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opts = to_f_uvc_opts(opts_item); \
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cd = &opts->uvc_camera_terminal; \
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\
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mutex_lock(&opts->lock); \
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result = sprintf(page, "%u\n", le##bits##_to_cpu(cd->aname)); \
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mutex_unlock(&opts->lock); \
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\
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mutex_unlock(su_mutex); \
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\
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return result; \
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} \
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\
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UVC_ATTR_RO(uvcg_default_camera_, cname, aname)
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UVCG_DEFAULT_CAMERA_ATTR(b_terminal_id, bTerminalID, 8);
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UVCG_DEFAULT_CAMERA_ATTR(w_terminal_type, wTerminalType, 16);
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UVCG_DEFAULT_CAMERA_ATTR(b_assoc_terminal, bAssocTerminal, 8);
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UVCG_DEFAULT_CAMERA_ATTR(i_terminal, iTerminal, 8);
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UVCG_DEFAULT_CAMERA_ATTR(w_objective_focal_length_min, wObjectiveFocalLengthMin,
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16);
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UVCG_DEFAULT_CAMERA_ATTR(w_objective_focal_length_max, wObjectiveFocalLengthMax,
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16);
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UVCG_DEFAULT_CAMERA_ATTR(w_ocular_focal_length, wOcularFocalLength,
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16);
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#undef UVCG_DEFAULT_CAMERA_ATTR
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static ssize_t uvcg_default_camera_bm_controls_show(
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struct config_item *item, char *page)
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{
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struct config_group *group = to_config_group(item);
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struct f_uvc_opts *opts;
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struct config_item *opts_item;
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struct mutex *su_mutex = &group->cg_subsys->su_mutex;
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struct uvc_camera_terminal_descriptor *cd;
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int result, i;
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char *pg = page;
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mutex_lock(su_mutex); /* for navigating configfs hierarchy */
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opts_item = group->cg_item.ci_parent->ci_parent->ci_parent->
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ci_parent;
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opts = to_f_uvc_opts(opts_item);
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cd = &opts->uvc_camera_terminal;
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mutex_lock(&opts->lock);
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for (result = 0, i = 0; i < cd->bControlSize; ++i) {
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result += sprintf(pg, "%u\n", cd->bmControls[i]);
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pg = page + result;
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}
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mutex_unlock(&opts->lock);
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mutex_unlock(su_mutex);
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return result;
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}
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UVC_ATTR_RO(uvcg_default_camera_, bm_controls, bmControls);
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static struct configfs_attribute *uvcg_default_camera_attrs[] = {
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&uvcg_default_camera_attr_b_terminal_id,
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&uvcg_default_camera_attr_w_terminal_type,
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&uvcg_default_camera_attr_b_assoc_terminal,
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&uvcg_default_camera_attr_i_terminal,
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&uvcg_default_camera_attr_w_objective_focal_length_min,
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&uvcg_default_camera_attr_w_objective_focal_length_max,
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&uvcg_default_camera_attr_w_ocular_focal_length,
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&uvcg_default_camera_attr_bm_controls,
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NULL,
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};
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static const struct uvcg_config_group_type uvcg_default_camera_type = {
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.type = {
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.ct_item_ops = &uvcg_config_item_ops,
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.ct_attrs = uvcg_default_camera_attrs,
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.ct_owner = THIS_MODULE,
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},
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.name = "default",
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};
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/* -----------------------------------------------------------------------------
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* control/terminal/camera
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*/
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static const struct uvcg_config_group_type uvcg_camera_grp_type = {
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.type = {
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.ct_item_ops = &uvcg_config_item_ops,
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.ct_owner = THIS_MODULE,
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},
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.name = "camera",
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.children = (const struct uvcg_config_group_type*[]) {
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&uvcg_default_camera_type,
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NULL,
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},
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};
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/* -----------------------------------------------------------------------------
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* control/terminal/output/default
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*/
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#define UVCG_DEFAULT_OUTPUT_ATTR(cname, aname, bits) \
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static ssize_t uvcg_default_output_##cname##_show( \
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struct config_item *item, char *page) \
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{ \
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struct config_group *group = to_config_group(item); \
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struct f_uvc_opts *opts; \
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struct config_item *opts_item; \
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struct mutex *su_mutex = &group->cg_subsys->su_mutex; \
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struct uvc_output_terminal_descriptor *cd; \
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int result; \
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\
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mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
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\
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opts_item = group->cg_item.ci_parent->ci_parent-> \
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ci_parent->ci_parent; \
|
|
opts = to_f_uvc_opts(opts_item); \
|
|
cd = &opts->uvc_output_terminal; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
result = sprintf(page, "%u\n", le##bits##_to_cpu(cd->aname)); \
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
mutex_unlock(su_mutex); \
|
|
\
|
|
return result; \
|
|
} \
|
|
\
|
|
UVC_ATTR_RO(uvcg_default_output_, cname, aname)
|
|
|
|
UVCG_DEFAULT_OUTPUT_ATTR(b_terminal_id, bTerminalID, 8);
|
|
UVCG_DEFAULT_OUTPUT_ATTR(w_terminal_type, wTerminalType, 16);
|
|
UVCG_DEFAULT_OUTPUT_ATTR(b_assoc_terminal, bAssocTerminal, 8);
|
|
UVCG_DEFAULT_OUTPUT_ATTR(b_source_id, bSourceID, 8);
|
|
UVCG_DEFAULT_OUTPUT_ATTR(i_terminal, iTerminal, 8);
|
|
|
|
#undef UVCG_DEFAULT_OUTPUT_ATTR
|
|
|
|
static struct configfs_attribute *uvcg_default_output_attrs[] = {
|
|
&uvcg_default_output_attr_b_terminal_id,
|
|
&uvcg_default_output_attr_w_terminal_type,
|
|
&uvcg_default_output_attr_b_assoc_terminal,
|
|
&uvcg_default_output_attr_b_source_id,
|
|
&uvcg_default_output_attr_i_terminal,
|
|
NULL,
|
|
};
|
|
|
|
static const struct uvcg_config_group_type uvcg_default_output_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_attrs = uvcg_default_output_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "default",
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* control/terminal/output
|
|
*/
|
|
|
|
static const struct uvcg_config_group_type uvcg_output_grp_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "output",
|
|
.children = (const struct uvcg_config_group_type*[]) {
|
|
&uvcg_default_output_type,
|
|
NULL,
|
|
},
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* control/terminal
|
|
*/
|
|
|
|
static const struct uvcg_config_group_type uvcg_terminal_grp_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "terminal",
|
|
.children = (const struct uvcg_config_group_type*[]) {
|
|
&uvcg_camera_grp_type,
|
|
&uvcg_output_grp_type,
|
|
NULL,
|
|
},
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* control/class/{fs|ss}
|
|
*/
|
|
|
|
struct uvcg_control_class_group {
|
|
struct config_group group;
|
|
const char *name;
|
|
};
|
|
|
|
static inline struct uvc_descriptor_header
|
|
**uvcg_get_ctl_class_arr(struct config_item *i, struct f_uvc_opts *o)
|
|
{
|
|
struct uvcg_control_class_group *group =
|
|
container_of(i, struct uvcg_control_class_group,
|
|
group.cg_item);
|
|
|
|
if (!strcmp(group->name, "fs"))
|
|
return o->uvc_fs_control_cls;
|
|
|
|
if (!strcmp(group->name, "ss"))
|
|
return o->uvc_ss_control_cls;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int uvcg_control_class_allow_link(struct config_item *src,
|
|
struct config_item *target)
|
|
{
|
|
struct config_item *control, *header;
|
|
struct f_uvc_opts *opts;
|
|
struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex;
|
|
struct uvc_descriptor_header **class_array;
|
|
struct uvcg_control_header *target_hdr;
|
|
int ret = -EINVAL;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
control = src->ci_parent->ci_parent;
|
|
header = config_group_find_item(to_config_group(control), "header");
|
|
if (!header || target->ci_parent != header)
|
|
goto out;
|
|
|
|
opts = to_f_uvc_opts(control->ci_parent);
|
|
|
|
mutex_lock(&opts->lock);
|
|
|
|
class_array = uvcg_get_ctl_class_arr(src, opts);
|
|
if (!class_array)
|
|
goto unlock;
|
|
if (opts->refcnt || class_array[0]) {
|
|
ret = -EBUSY;
|
|
goto unlock;
|
|
}
|
|
|
|
target_hdr = to_uvcg_control_header(target);
|
|
++target_hdr->linked;
|
|
class_array[0] = (struct uvc_descriptor_header *)&target_hdr->desc;
|
|
ret = 0;
|
|
|
|
unlock:
|
|
mutex_unlock(&opts->lock);
|
|
out:
|
|
config_item_put(header);
|
|
mutex_unlock(su_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static void uvcg_control_class_drop_link(struct config_item *src,
|
|
struct config_item *target)
|
|
{
|
|
struct config_item *control, *header;
|
|
struct f_uvc_opts *opts;
|
|
struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex;
|
|
struct uvc_descriptor_header **class_array;
|
|
struct uvcg_control_header *target_hdr;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
control = src->ci_parent->ci_parent;
|
|
header = config_group_find_item(to_config_group(control), "header");
|
|
if (!header || target->ci_parent != header)
|
|
goto out;
|
|
|
|
opts = to_f_uvc_opts(control->ci_parent);
|
|
|
|
mutex_lock(&opts->lock);
|
|
|
|
class_array = uvcg_get_ctl_class_arr(src, opts);
|
|
if (!class_array || opts->refcnt)
|
|
goto unlock;
|
|
|
|
target_hdr = to_uvcg_control_header(target);
|
|
--target_hdr->linked;
|
|
class_array[0] = NULL;
|
|
|
|
unlock:
|
|
mutex_unlock(&opts->lock);
|
|
out:
|
|
config_item_put(header);
|
|
mutex_unlock(su_mutex);
|
|
}
|
|
|
|
static struct configfs_item_operations uvcg_control_class_item_ops = {
|
|
.release = uvcg_config_item_release,
|
|
.allow_link = uvcg_control_class_allow_link,
|
|
.drop_link = uvcg_control_class_drop_link,
|
|
};
|
|
|
|
static const struct config_item_type uvcg_control_class_type = {
|
|
.ct_item_ops = &uvcg_control_class_item_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* control/class
|
|
*/
|
|
|
|
static int uvcg_control_class_create_children(struct config_group *parent)
|
|
{
|
|
static const char * const names[] = { "fs", "ss" };
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(names); ++i) {
|
|
struct uvcg_control_class_group *group;
|
|
|
|
group = kzalloc(sizeof(*group), GFP_KERNEL);
|
|
if (!group)
|
|
return -ENOMEM;
|
|
|
|
group->name = names[i];
|
|
|
|
config_group_init_type_name(&group->group, group->name,
|
|
&uvcg_control_class_type);
|
|
configfs_add_default_group(&group->group, parent);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct uvcg_config_group_type uvcg_control_class_grp_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "class",
|
|
.create_children = uvcg_control_class_create_children,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* control
|
|
*/
|
|
|
|
static ssize_t uvcg_default_control_b_interface_number_show(
|
|
struct config_item *item, char *page)
|
|
{
|
|
struct config_group *group = to_config_group(item);
|
|
struct mutex *su_mutex = &group->cg_subsys->su_mutex;
|
|
struct config_item *opts_item;
|
|
struct f_uvc_opts *opts;
|
|
int result = 0;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
opts_item = item->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
result += sprintf(page, "%u\n", opts->control_interface);
|
|
mutex_unlock(&opts->lock);
|
|
|
|
mutex_unlock(su_mutex);
|
|
|
|
return result;
|
|
}
|
|
|
|
UVC_ATTR_RO(uvcg_default_control_, b_interface_number, bInterfaceNumber);
|
|
|
|
static struct configfs_attribute *uvcg_default_control_attrs[] = {
|
|
&uvcg_default_control_attr_b_interface_number,
|
|
NULL,
|
|
};
|
|
|
|
static const struct uvcg_config_group_type uvcg_control_grp_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_attrs = uvcg_default_control_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "control",
|
|
.children = (const struct uvcg_config_group_type*[]) {
|
|
&uvcg_control_header_grp_type,
|
|
&uvcg_processing_grp_type,
|
|
&uvcg_terminal_grp_type,
|
|
&uvcg_control_class_grp_type,
|
|
NULL,
|
|
},
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* streaming/uncompressed
|
|
* streaming/mjpeg
|
|
*/
|
|
|
|
static const char * const uvcg_format_names[] = {
|
|
"uncompressed",
|
|
"mjpeg",
|
|
};
|
|
|
|
enum uvcg_format_type {
|
|
UVCG_UNCOMPRESSED = 0,
|
|
UVCG_MJPEG,
|
|
};
|
|
|
|
struct uvcg_format {
|
|
struct config_group group;
|
|
enum uvcg_format_type type;
|
|
unsigned linked;
|
|
unsigned num_frames;
|
|
__u8 bmaControls[UVCG_STREAMING_CONTROL_SIZE];
|
|
};
|
|
|
|
static struct uvcg_format *to_uvcg_format(struct config_item *item)
|
|
{
|
|
return container_of(to_config_group(item), struct uvcg_format, group);
|
|
}
|
|
|
|
static ssize_t uvcg_format_bma_controls_show(struct uvcg_format *f, char *page)
|
|
{
|
|
struct f_uvc_opts *opts;
|
|
struct config_item *opts_item;
|
|
struct mutex *su_mutex = &f->group.cg_subsys->su_mutex;
|
|
int result, i;
|
|
char *pg = page;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
opts_item = f->group.cg_item.ci_parent->ci_parent->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
result = sprintf(pg, "0x");
|
|
pg += result;
|
|
for (i = 0; i < UVCG_STREAMING_CONTROL_SIZE; ++i) {
|
|
result += sprintf(pg, "%x\n", f->bmaControls[i]);
|
|
pg = page + result;
|
|
}
|
|
mutex_unlock(&opts->lock);
|
|
|
|
mutex_unlock(su_mutex);
|
|
return result;
|
|
}
|
|
|
|
static ssize_t uvcg_format_bma_controls_store(struct uvcg_format *ch,
|
|
const char *page, size_t len)
|
|
{
|
|
struct f_uvc_opts *opts;
|
|
struct config_item *opts_item;
|
|
struct mutex *su_mutex = &ch->group.cg_subsys->su_mutex;
|
|
int ret = -EINVAL;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
opts_item = ch->group.cg_item.ci_parent->ci_parent->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
if (ch->linked || opts->refcnt) {
|
|
ret = -EBUSY;
|
|
goto end;
|
|
}
|
|
|
|
if (len < 4 || *page != '0' ||
|
|
(*(page + 1) != 'x' && *(page + 1) != 'X'))
|
|
goto end;
|
|
ret = hex2bin(ch->bmaControls, page + 2, 1);
|
|
if (ret < 0)
|
|
goto end;
|
|
ret = len;
|
|
end:
|
|
mutex_unlock(&opts->lock);
|
|
mutex_unlock(su_mutex);
|
|
return ret;
|
|
}
|
|
|
|
struct uvcg_format_ptr {
|
|
struct uvcg_format *fmt;
|
|
struct list_head entry;
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* streaming/header/<NAME>
|
|
* streaming/header
|
|
*/
|
|
|
|
struct uvcg_streaming_header {
|
|
struct config_item item;
|
|
struct uvc_input_header_descriptor desc;
|
|
unsigned linked;
|
|
struct list_head formats;
|
|
unsigned num_fmt;
|
|
};
|
|
|
|
static struct uvcg_streaming_header *to_uvcg_streaming_header(struct config_item *item)
|
|
{
|
|
return container_of(item, struct uvcg_streaming_header, item);
|
|
}
|
|
|
|
static void uvcg_format_set_indices(struct config_group *fmt);
|
|
|
|
static int uvcg_streaming_header_allow_link(struct config_item *src,
|
|
struct config_item *target)
|
|
{
|
|
struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex;
|
|
struct config_item *opts_item;
|
|
struct f_uvc_opts *opts;
|
|
struct uvcg_streaming_header *src_hdr;
|
|
struct uvcg_format *target_fmt = NULL;
|
|
struct uvcg_format_ptr *format_ptr;
|
|
int i, ret = -EINVAL;
|
|
|
|
src_hdr = to_uvcg_streaming_header(src);
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
opts_item = src->ci_parent->ci_parent->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
|
|
if (src_hdr->linked) {
|
|
ret = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Linking is only allowed to direct children of the format nodes
|
|
* (streaming/uncompressed or streaming/mjpeg nodes). First check that
|
|
* the grand-parent of the target matches the grand-parent of the source
|
|
* (the streaming node), and then verify that the target parent is a
|
|
* format node.
|
|
*/
|
|
if (src->ci_parent->ci_parent != target->ci_parent->ci_parent)
|
|
goto out;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(uvcg_format_names); ++i) {
|
|
if (!strcmp(target->ci_parent->ci_name, uvcg_format_names[i]))
|
|
break;
|
|
}
|
|
|
|
if (i == ARRAY_SIZE(uvcg_format_names))
|
|
goto out;
|
|
|
|
target_fmt = container_of(to_config_group(target), struct uvcg_format,
|
|
group);
|
|
if (!target_fmt)
|
|
goto out;
|
|
|
|
uvcg_format_set_indices(to_config_group(target));
|
|
|
|
format_ptr = kzalloc(sizeof(*format_ptr), GFP_KERNEL);
|
|
if (!format_ptr) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
ret = 0;
|
|
format_ptr->fmt = target_fmt;
|
|
list_add_tail(&format_ptr->entry, &src_hdr->formats);
|
|
++src_hdr->num_fmt;
|
|
++target_fmt->linked;
|
|
|
|
out:
|
|
mutex_unlock(&opts->lock);
|
|
mutex_unlock(su_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static void uvcg_streaming_header_drop_link(struct config_item *src,
|
|
struct config_item *target)
|
|
{
|
|
struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex;
|
|
struct config_item *opts_item;
|
|
struct f_uvc_opts *opts;
|
|
struct uvcg_streaming_header *src_hdr;
|
|
struct uvcg_format *target_fmt = NULL;
|
|
struct uvcg_format_ptr *format_ptr, *tmp;
|
|
|
|
src_hdr = to_uvcg_streaming_header(src);
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
opts_item = src->ci_parent->ci_parent->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
target_fmt = container_of(to_config_group(target), struct uvcg_format,
|
|
group);
|
|
if (!target_fmt)
|
|
goto out;
|
|
|
|
list_for_each_entry_safe(format_ptr, tmp, &src_hdr->formats, entry)
|
|
if (format_ptr->fmt == target_fmt) {
|
|
list_del(&format_ptr->entry);
|
|
kfree(format_ptr);
|
|
--src_hdr->num_fmt;
|
|
break;
|
|
}
|
|
|
|
--target_fmt->linked;
|
|
|
|
out:
|
|
mutex_unlock(&opts->lock);
|
|
mutex_unlock(su_mutex);
|
|
}
|
|
|
|
static struct configfs_item_operations uvcg_streaming_header_item_ops = {
|
|
.release = uvcg_config_item_release,
|
|
.allow_link = uvcg_streaming_header_allow_link,
|
|
.drop_link = uvcg_streaming_header_drop_link,
|
|
};
|
|
|
|
#define UVCG_STREAMING_HEADER_ATTR(cname, aname, bits) \
|
|
static ssize_t uvcg_streaming_header_##cname##_show( \
|
|
struct config_item *item, char *page) \
|
|
{ \
|
|
struct uvcg_streaming_header *sh = to_uvcg_streaming_header(item); \
|
|
struct f_uvc_opts *opts; \
|
|
struct config_item *opts_item; \
|
|
struct mutex *su_mutex = &sh->item.ci_group->cg_subsys->su_mutex;\
|
|
int result; \
|
|
\
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
|
|
\
|
|
opts_item = sh->item.ci_parent->ci_parent->ci_parent; \
|
|
opts = to_f_uvc_opts(opts_item); \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
result = sprintf(page, "%u\n", le##bits##_to_cpu(sh->desc.aname));\
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
mutex_unlock(su_mutex); \
|
|
return result; \
|
|
} \
|
|
\
|
|
UVC_ATTR_RO(uvcg_streaming_header_, cname, aname)
|
|
|
|
UVCG_STREAMING_HEADER_ATTR(bm_info, bmInfo, 8);
|
|
UVCG_STREAMING_HEADER_ATTR(b_terminal_link, bTerminalLink, 8);
|
|
UVCG_STREAMING_HEADER_ATTR(b_still_capture_method, bStillCaptureMethod, 8);
|
|
UVCG_STREAMING_HEADER_ATTR(b_trigger_support, bTriggerSupport, 8);
|
|
UVCG_STREAMING_HEADER_ATTR(b_trigger_usage, bTriggerUsage, 8);
|
|
|
|
#undef UVCG_STREAMING_HEADER_ATTR
|
|
|
|
static struct configfs_attribute *uvcg_streaming_header_attrs[] = {
|
|
&uvcg_streaming_header_attr_bm_info,
|
|
&uvcg_streaming_header_attr_b_terminal_link,
|
|
&uvcg_streaming_header_attr_b_still_capture_method,
|
|
&uvcg_streaming_header_attr_b_trigger_support,
|
|
&uvcg_streaming_header_attr_b_trigger_usage,
|
|
NULL,
|
|
};
|
|
|
|
static const struct config_item_type uvcg_streaming_header_type = {
|
|
.ct_item_ops = &uvcg_streaming_header_item_ops,
|
|
.ct_attrs = uvcg_streaming_header_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
static struct config_item
|
|
*uvcg_streaming_header_make(struct config_group *group, const char *name)
|
|
{
|
|
struct uvcg_streaming_header *h;
|
|
|
|
h = kzalloc(sizeof(*h), GFP_KERNEL);
|
|
if (!h)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
INIT_LIST_HEAD(&h->formats);
|
|
h->desc.bDescriptorType = USB_DT_CS_INTERFACE;
|
|
h->desc.bDescriptorSubType = UVC_VS_INPUT_HEADER;
|
|
h->desc.bTerminalLink = 3;
|
|
h->desc.bControlSize = UVCG_STREAMING_CONTROL_SIZE;
|
|
|
|
config_item_init_type_name(&h->item, name, &uvcg_streaming_header_type);
|
|
|
|
return &h->item;
|
|
}
|
|
|
|
static struct configfs_group_operations uvcg_streaming_header_grp_ops = {
|
|
.make_item = uvcg_streaming_header_make,
|
|
};
|
|
|
|
static const struct uvcg_config_group_type uvcg_streaming_header_grp_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_group_ops = &uvcg_streaming_header_grp_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "header",
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* streaming/<mode>/<format>/<NAME>
|
|
*/
|
|
|
|
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 struct uvcg_frame *to_uvcg_frame(struct config_item *item)
|
|
{
|
|
return container_of(item, struct uvcg_frame, item);
|
|
}
|
|
|
|
#define UVCG_FRAME_ATTR(cname, aname, bits) \
|
|
static ssize_t uvcg_frame_##cname##_show(struct config_item *item, char *page)\
|
|
{ \
|
|
struct uvcg_frame *f = to_uvcg_frame(item); \
|
|
struct f_uvc_opts *opts; \
|
|
struct config_item *opts_item; \
|
|
struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\
|
|
int result; \
|
|
\
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
|
|
\
|
|
opts_item = f->item.ci_parent->ci_parent->ci_parent->ci_parent; \
|
|
opts = to_f_uvc_opts(opts_item); \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
result = sprintf(page, "%u\n", f->frame.cname); \
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
mutex_unlock(su_mutex); \
|
|
return result; \
|
|
} \
|
|
\
|
|
static ssize_t uvcg_frame_##cname##_store(struct config_item *item, \
|
|
const char *page, size_t len)\
|
|
{ \
|
|
struct uvcg_frame *f = to_uvcg_frame(item); \
|
|
struct f_uvc_opts *opts; \
|
|
struct config_item *opts_item; \
|
|
struct uvcg_format *fmt; \
|
|
struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\
|
|
typeof(f->frame.cname) num; \
|
|
int ret; \
|
|
\
|
|
ret = kstrtou##bits(page, 0, &num); \
|
|
if (ret) \
|
|
return ret; \
|
|
\
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
|
|
\
|
|
opts_item = f->item.ci_parent->ci_parent->ci_parent->ci_parent; \
|
|
opts = to_f_uvc_opts(opts_item); \
|
|
fmt = to_uvcg_format(f->item.ci_parent); \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
if (fmt->linked || opts->refcnt) { \
|
|
ret = -EBUSY; \
|
|
goto end; \
|
|
} \
|
|
\
|
|
f->frame.cname = num; \
|
|
ret = len; \
|
|
end: \
|
|
mutex_unlock(&opts->lock); \
|
|
mutex_unlock(su_mutex); \
|
|
return ret; \
|
|
} \
|
|
\
|
|
UVC_ATTR(uvcg_frame_, cname, aname);
|
|
|
|
static ssize_t uvcg_frame_b_frame_index_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct uvcg_frame *f = to_uvcg_frame(item);
|
|
struct uvcg_format *fmt;
|
|
struct f_uvc_opts *opts;
|
|
struct config_item *opts_item;
|
|
struct config_item *fmt_item;
|
|
struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;
|
|
int result;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
fmt_item = f->item.ci_parent;
|
|
fmt = to_uvcg_format(fmt_item);
|
|
|
|
if (!fmt->linked) {
|
|
result = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
opts_item = fmt_item->ci_parent->ci_parent->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
result = sprintf(page, "%u\n", f->frame.b_frame_index);
|
|
mutex_unlock(&opts->lock);
|
|
|
|
out:
|
|
mutex_unlock(su_mutex);
|
|
return result;
|
|
}
|
|
|
|
UVC_ATTR_RO(uvcg_frame_, b_frame_index, bFrameIndex);
|
|
|
|
UVCG_FRAME_ATTR(bm_capabilities, bmCapabilities, 8);
|
|
UVCG_FRAME_ATTR(w_width, wWidth, 16);
|
|
UVCG_FRAME_ATTR(w_height, wHeight, 16);
|
|
UVCG_FRAME_ATTR(dw_min_bit_rate, dwMinBitRate, 32);
|
|
UVCG_FRAME_ATTR(dw_max_bit_rate, dwMaxBitRate, 32);
|
|
UVCG_FRAME_ATTR(dw_max_video_frame_buffer_size, dwMaxVideoFrameBufferSize, 32);
|
|
UVCG_FRAME_ATTR(dw_default_frame_interval, dwDefaultFrameInterval, 32);
|
|
|
|
#undef UVCG_FRAME_ATTR
|
|
|
|
static ssize_t uvcg_frame_dw_frame_interval_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct uvcg_frame *frm = to_uvcg_frame(item);
|
|
struct f_uvc_opts *opts;
|
|
struct config_item *opts_item;
|
|
struct mutex *su_mutex = &frm->item.ci_group->cg_subsys->su_mutex;
|
|
int result, i;
|
|
char *pg = page;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
opts_item = frm->item.ci_parent->ci_parent->ci_parent->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
for (result = 0, i = 0; i < frm->frame.b_frame_interval_type; ++i) {
|
|
result += sprintf(pg, "%u\n", frm->dw_frame_interval[i]);
|
|
pg = page + result;
|
|
}
|
|
mutex_unlock(&opts->lock);
|
|
|
|
mutex_unlock(su_mutex);
|
|
return result;
|
|
}
|
|
|
|
static inline int __uvcg_count_frm_intrv(char *buf, void *priv)
|
|
{
|
|
++*((int *)priv);
|
|
return 0;
|
|
}
|
|
|
|
static inline int __uvcg_fill_frm_intrv(char *buf, void *priv)
|
|
{
|
|
u32 num, **interv;
|
|
int ret;
|
|
|
|
ret = kstrtou32(buf, 0, &num);
|
|
if (ret)
|
|
return ret;
|
|
|
|
interv = priv;
|
|
**interv = num;
|
|
++*interv;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __uvcg_iter_frm_intrv(const char *page, size_t len,
|
|
int (*fun)(char *, void *), void *priv)
|
|
{
|
|
/* sign, base 2 representation, newline, terminator */
|
|
char buf[1 + sizeof(u32) * 8 + 1 + 1];
|
|
const char *pg = page;
|
|
int i, ret;
|
|
|
|
if (!fun)
|
|
return -EINVAL;
|
|
|
|
while (pg - page < len) {
|
|
i = 0;
|
|
while (i < sizeof(buf) && (pg - page < len) &&
|
|
*pg != '\0' && *pg != '\n')
|
|
buf[i++] = *pg++;
|
|
if (i == sizeof(buf))
|
|
return -EINVAL;
|
|
while ((pg - page < len) && (*pg == '\0' || *pg == '\n'))
|
|
++pg;
|
|
buf[i] = '\0';
|
|
ret = fun(buf, priv);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t uvcg_frame_dw_frame_interval_store(struct config_item *item,
|
|
const char *page, size_t len)
|
|
{
|
|
struct uvcg_frame *ch = to_uvcg_frame(item);
|
|
struct f_uvc_opts *opts;
|
|
struct config_item *opts_item;
|
|
struct uvcg_format *fmt;
|
|
struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex;
|
|
int ret = 0, n = 0;
|
|
u32 *frm_intrv, *tmp;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
opts_item = ch->item.ci_parent->ci_parent->ci_parent->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
fmt = to_uvcg_format(ch->item.ci_parent);
|
|
|
|
mutex_lock(&opts->lock);
|
|
if (fmt->linked || opts->refcnt) {
|
|
ret = -EBUSY;
|
|
goto end;
|
|
}
|
|
|
|
ret = __uvcg_iter_frm_intrv(page, len, __uvcg_count_frm_intrv, &n);
|
|
if (ret)
|
|
goto end;
|
|
|
|
tmp = frm_intrv = kcalloc(n, sizeof(u32), GFP_KERNEL);
|
|
if (!frm_intrv) {
|
|
ret = -ENOMEM;
|
|
goto end;
|
|
}
|
|
|
|
ret = __uvcg_iter_frm_intrv(page, len, __uvcg_fill_frm_intrv, &tmp);
|
|
if (ret) {
|
|
kfree(frm_intrv);
|
|
goto end;
|
|
}
|
|
|
|
kfree(ch->dw_frame_interval);
|
|
ch->dw_frame_interval = frm_intrv;
|
|
ch->frame.b_frame_interval_type = n;
|
|
sort(ch->dw_frame_interval, n, sizeof(*ch->dw_frame_interval),
|
|
uvcg_config_compare_u32, NULL);
|
|
ret = len;
|
|
|
|
end:
|
|
mutex_unlock(&opts->lock);
|
|
mutex_unlock(su_mutex);
|
|
return ret;
|
|
}
|
|
|
|
UVC_ATTR(uvcg_frame_, dw_frame_interval, dwFrameInterval);
|
|
|
|
static struct configfs_attribute *uvcg_frame_attrs[] = {
|
|
&uvcg_frame_attr_b_frame_index,
|
|
&uvcg_frame_attr_bm_capabilities,
|
|
&uvcg_frame_attr_w_width,
|
|
&uvcg_frame_attr_w_height,
|
|
&uvcg_frame_attr_dw_min_bit_rate,
|
|
&uvcg_frame_attr_dw_max_bit_rate,
|
|
&uvcg_frame_attr_dw_max_video_frame_buffer_size,
|
|
&uvcg_frame_attr_dw_default_frame_interval,
|
|
&uvcg_frame_attr_dw_frame_interval,
|
|
NULL,
|
|
};
|
|
|
|
static const struct config_item_type uvcg_frame_type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_attrs = uvcg_frame_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
static struct config_item *uvcg_frame_make(struct config_group *group,
|
|
const char *name)
|
|
{
|
|
struct uvcg_frame *h;
|
|
struct uvcg_format *fmt;
|
|
struct f_uvc_opts *opts;
|
|
struct config_item *opts_item;
|
|
|
|
h = kzalloc(sizeof(*h), GFP_KERNEL);
|
|
if (!h)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
h->frame.b_descriptor_type = USB_DT_CS_INTERFACE;
|
|
h->frame.b_frame_index = 1;
|
|
h->frame.w_width = 640;
|
|
h->frame.w_height = 360;
|
|
h->frame.dw_min_bit_rate = 18432000;
|
|
h->frame.dw_max_bit_rate = 55296000;
|
|
h->frame.dw_max_video_frame_buffer_size = 460800;
|
|
h->frame.dw_default_frame_interval = 666666;
|
|
|
|
opts_item = group->cg_item.ci_parent->ci_parent->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
fmt = to_uvcg_format(&group->cg_item);
|
|
if (fmt->type == UVCG_UNCOMPRESSED) {
|
|
h->frame.b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED;
|
|
h->fmt_type = UVCG_UNCOMPRESSED;
|
|
} else if (fmt->type == UVCG_MJPEG) {
|
|
h->frame.b_descriptor_subtype = UVC_VS_FRAME_MJPEG;
|
|
h->fmt_type = UVCG_MJPEG;
|
|
} else {
|
|
mutex_unlock(&opts->lock);
|
|
kfree(h);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
++fmt->num_frames;
|
|
mutex_unlock(&opts->lock);
|
|
|
|
config_item_init_type_name(&h->item, name, &uvcg_frame_type);
|
|
|
|
return &h->item;
|
|
}
|
|
|
|
static void uvcg_frame_drop(struct config_group *group, struct config_item *item)
|
|
{
|
|
struct uvcg_format *fmt;
|
|
struct f_uvc_opts *opts;
|
|
struct config_item *opts_item;
|
|
|
|
opts_item = group->cg_item.ci_parent->ci_parent->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
fmt = to_uvcg_format(&group->cg_item);
|
|
--fmt->num_frames;
|
|
mutex_unlock(&opts->lock);
|
|
|
|
config_item_put(item);
|
|
}
|
|
|
|
static void uvcg_format_set_indices(struct config_group *fmt)
|
|
{
|
|
struct config_item *ci;
|
|
unsigned int i = 1;
|
|
|
|
list_for_each_entry(ci, &fmt->cg_children, ci_entry) {
|
|
struct uvcg_frame *frm;
|
|
|
|
if (ci->ci_type != &uvcg_frame_type)
|
|
continue;
|
|
|
|
frm = to_uvcg_frame(ci);
|
|
frm->frame.b_frame_index = i++;
|
|
}
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* streaming/uncompressed/<NAME>
|
|
*/
|
|
|
|
struct uvcg_uncompressed {
|
|
struct uvcg_format fmt;
|
|
struct uvc_format_uncompressed desc;
|
|
};
|
|
|
|
static struct uvcg_uncompressed *to_uvcg_uncompressed(struct config_item *item)
|
|
{
|
|
return container_of(
|
|
container_of(to_config_group(item), struct uvcg_format, group),
|
|
struct uvcg_uncompressed, fmt);
|
|
}
|
|
|
|
static struct configfs_group_operations uvcg_uncompressed_group_ops = {
|
|
.make_item = uvcg_frame_make,
|
|
.drop_item = uvcg_frame_drop,
|
|
};
|
|
|
|
static ssize_t uvcg_uncompressed_guid_format_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct uvcg_uncompressed *ch = to_uvcg_uncompressed(item);
|
|
struct f_uvc_opts *opts;
|
|
struct config_item *opts_item;
|
|
struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
memcpy(page, ch->desc.guidFormat, sizeof(ch->desc.guidFormat));
|
|
mutex_unlock(&opts->lock);
|
|
|
|
mutex_unlock(su_mutex);
|
|
|
|
return sizeof(ch->desc.guidFormat);
|
|
}
|
|
|
|
static ssize_t uvcg_uncompressed_guid_format_store(struct config_item *item,
|
|
const char *page, size_t len)
|
|
{
|
|
struct uvcg_uncompressed *ch = to_uvcg_uncompressed(item);
|
|
struct f_uvc_opts *opts;
|
|
struct config_item *opts_item;
|
|
struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex;
|
|
int ret;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
if (ch->fmt.linked || opts->refcnt) {
|
|
ret = -EBUSY;
|
|
goto end;
|
|
}
|
|
|
|
memcpy(ch->desc.guidFormat, page,
|
|
min(sizeof(ch->desc.guidFormat), len));
|
|
ret = sizeof(ch->desc.guidFormat);
|
|
|
|
end:
|
|
mutex_unlock(&opts->lock);
|
|
mutex_unlock(su_mutex);
|
|
return ret;
|
|
}
|
|
|
|
UVC_ATTR(uvcg_uncompressed_, guid_format, guidFormat);
|
|
|
|
#define UVCG_UNCOMPRESSED_ATTR_RO(cname, aname, bits) \
|
|
static ssize_t uvcg_uncompressed_##cname##_show( \
|
|
struct config_item *item, char *page) \
|
|
{ \
|
|
struct uvcg_uncompressed *u = to_uvcg_uncompressed(item); \
|
|
struct f_uvc_opts *opts; \
|
|
struct config_item *opts_item; \
|
|
struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \
|
|
int result; \
|
|
\
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
|
|
\
|
|
opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\
|
|
opts = to_f_uvc_opts(opts_item); \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
result = sprintf(page, "%u\n", le##bits##_to_cpu(u->desc.aname));\
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
mutex_unlock(su_mutex); \
|
|
return result; \
|
|
} \
|
|
\
|
|
UVC_ATTR_RO(uvcg_uncompressed_, cname, aname);
|
|
|
|
#define UVCG_UNCOMPRESSED_ATTR(cname, aname, bits) \
|
|
static ssize_t uvcg_uncompressed_##cname##_show( \
|
|
struct config_item *item, char *page) \
|
|
{ \
|
|
struct uvcg_uncompressed *u = to_uvcg_uncompressed(item); \
|
|
struct f_uvc_opts *opts; \
|
|
struct config_item *opts_item; \
|
|
struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \
|
|
int result; \
|
|
\
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
|
|
\
|
|
opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\
|
|
opts = to_f_uvc_opts(opts_item); \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
result = sprintf(page, "%u\n", le##bits##_to_cpu(u->desc.aname));\
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
mutex_unlock(su_mutex); \
|
|
return result; \
|
|
} \
|
|
\
|
|
static ssize_t \
|
|
uvcg_uncompressed_##cname##_store(struct config_item *item, \
|
|
const char *page, size_t len) \
|
|
{ \
|
|
struct uvcg_uncompressed *u = to_uvcg_uncompressed(item); \
|
|
struct f_uvc_opts *opts; \
|
|
struct config_item *opts_item; \
|
|
struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \
|
|
int ret; \
|
|
u8 num; \
|
|
\
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
|
|
\
|
|
opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\
|
|
opts = to_f_uvc_opts(opts_item); \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
if (u->fmt.linked || opts->refcnt) { \
|
|
ret = -EBUSY; \
|
|
goto end; \
|
|
} \
|
|
\
|
|
ret = kstrtou8(page, 0, &num); \
|
|
if (ret) \
|
|
goto end; \
|
|
\
|
|
u->desc.aname = num; \
|
|
ret = len; \
|
|
end: \
|
|
mutex_unlock(&opts->lock); \
|
|
mutex_unlock(su_mutex); \
|
|
return ret; \
|
|
} \
|
|
\
|
|
UVC_ATTR(uvcg_uncompressed_, cname, aname);
|
|
|
|
UVCG_UNCOMPRESSED_ATTR_RO(b_format_index, bFormatIndex, 8);
|
|
UVCG_UNCOMPRESSED_ATTR(b_bits_per_pixel, bBitsPerPixel, 8);
|
|
UVCG_UNCOMPRESSED_ATTR(b_default_frame_index, bDefaultFrameIndex, 8);
|
|
UVCG_UNCOMPRESSED_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, 8);
|
|
UVCG_UNCOMPRESSED_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, 8);
|
|
UVCG_UNCOMPRESSED_ATTR_RO(bm_interface_flags, bmInterfaceFlags, 8);
|
|
|
|
#undef UVCG_UNCOMPRESSED_ATTR
|
|
#undef UVCG_UNCOMPRESSED_ATTR_RO
|
|
|
|
static inline ssize_t
|
|
uvcg_uncompressed_bma_controls_show(struct config_item *item, char *page)
|
|
{
|
|
struct uvcg_uncompressed *unc = to_uvcg_uncompressed(item);
|
|
return uvcg_format_bma_controls_show(&unc->fmt, page);
|
|
}
|
|
|
|
static inline ssize_t
|
|
uvcg_uncompressed_bma_controls_store(struct config_item *item,
|
|
const char *page, size_t len)
|
|
{
|
|
struct uvcg_uncompressed *unc = to_uvcg_uncompressed(item);
|
|
return uvcg_format_bma_controls_store(&unc->fmt, page, len);
|
|
}
|
|
|
|
UVC_ATTR(uvcg_uncompressed_, bma_controls, bmaControls);
|
|
|
|
static struct configfs_attribute *uvcg_uncompressed_attrs[] = {
|
|
&uvcg_uncompressed_attr_b_format_index,
|
|
&uvcg_uncompressed_attr_guid_format,
|
|
&uvcg_uncompressed_attr_b_bits_per_pixel,
|
|
&uvcg_uncompressed_attr_b_default_frame_index,
|
|
&uvcg_uncompressed_attr_b_aspect_ratio_x,
|
|
&uvcg_uncompressed_attr_b_aspect_ratio_y,
|
|
&uvcg_uncompressed_attr_bm_interface_flags,
|
|
&uvcg_uncompressed_attr_bma_controls,
|
|
NULL,
|
|
};
|
|
|
|
static const struct config_item_type uvcg_uncompressed_type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_group_ops = &uvcg_uncompressed_group_ops,
|
|
.ct_attrs = uvcg_uncompressed_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
static struct config_group *uvcg_uncompressed_make(struct config_group *group,
|
|
const char *name)
|
|
{
|
|
static char guid[] = {
|
|
'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00,
|
|
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71
|
|
};
|
|
struct uvcg_uncompressed *h;
|
|
|
|
h = kzalloc(sizeof(*h), GFP_KERNEL);
|
|
if (!h)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
h->desc.bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE;
|
|
h->desc.bDescriptorType = USB_DT_CS_INTERFACE;
|
|
h->desc.bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED;
|
|
memcpy(h->desc.guidFormat, guid, sizeof(guid));
|
|
h->desc.bBitsPerPixel = 16;
|
|
h->desc.bDefaultFrameIndex = 1;
|
|
h->desc.bAspectRatioX = 0;
|
|
h->desc.bAspectRatioY = 0;
|
|
h->desc.bmInterfaceFlags = 0;
|
|
h->desc.bCopyProtect = 0;
|
|
|
|
h->fmt.type = UVCG_UNCOMPRESSED;
|
|
config_group_init_type_name(&h->fmt.group, name,
|
|
&uvcg_uncompressed_type);
|
|
|
|
return &h->fmt.group;
|
|
}
|
|
|
|
static struct configfs_group_operations uvcg_uncompressed_grp_ops = {
|
|
.make_group = uvcg_uncompressed_make,
|
|
};
|
|
|
|
static const struct uvcg_config_group_type uvcg_uncompressed_grp_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_group_ops = &uvcg_uncompressed_grp_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "uncompressed",
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* streaming/mjpeg/<NAME>
|
|
*/
|
|
|
|
struct uvcg_mjpeg {
|
|
struct uvcg_format fmt;
|
|
struct uvc_format_mjpeg desc;
|
|
};
|
|
|
|
static struct uvcg_mjpeg *to_uvcg_mjpeg(struct config_item *item)
|
|
{
|
|
return container_of(
|
|
container_of(to_config_group(item), struct uvcg_format, group),
|
|
struct uvcg_mjpeg, fmt);
|
|
}
|
|
|
|
static struct configfs_group_operations uvcg_mjpeg_group_ops = {
|
|
.make_item = uvcg_frame_make,
|
|
.drop_item = uvcg_frame_drop,
|
|
};
|
|
|
|
#define UVCG_MJPEG_ATTR_RO(cname, aname, bits) \
|
|
static ssize_t uvcg_mjpeg_##cname##_show(struct config_item *item, char *page)\
|
|
{ \
|
|
struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); \
|
|
struct f_uvc_opts *opts; \
|
|
struct config_item *opts_item; \
|
|
struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \
|
|
int result; \
|
|
\
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
|
|
\
|
|
opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\
|
|
opts = to_f_uvc_opts(opts_item); \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
result = sprintf(page, "%u\n", le##bits##_to_cpu(u->desc.aname));\
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
mutex_unlock(su_mutex); \
|
|
return result; \
|
|
} \
|
|
\
|
|
UVC_ATTR_RO(uvcg_mjpeg_, cname, aname)
|
|
|
|
#define UVCG_MJPEG_ATTR(cname, aname, bits) \
|
|
static ssize_t uvcg_mjpeg_##cname##_show(struct config_item *item, char *page)\
|
|
{ \
|
|
struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); \
|
|
struct f_uvc_opts *opts; \
|
|
struct config_item *opts_item; \
|
|
struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \
|
|
int result; \
|
|
\
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
|
|
\
|
|
opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\
|
|
opts = to_f_uvc_opts(opts_item); \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
result = sprintf(page, "%u\n", le##bits##_to_cpu(u->desc.aname));\
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
mutex_unlock(su_mutex); \
|
|
return result; \
|
|
} \
|
|
\
|
|
static ssize_t \
|
|
uvcg_mjpeg_##cname##_store(struct config_item *item, \
|
|
const char *page, size_t len) \
|
|
{ \
|
|
struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); \
|
|
struct f_uvc_opts *opts; \
|
|
struct config_item *opts_item; \
|
|
struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \
|
|
int ret; \
|
|
u8 num; \
|
|
\
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
|
|
\
|
|
opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\
|
|
opts = to_f_uvc_opts(opts_item); \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
if (u->fmt.linked || opts->refcnt) { \
|
|
ret = -EBUSY; \
|
|
goto end; \
|
|
} \
|
|
\
|
|
ret = kstrtou8(page, 0, &num); \
|
|
if (ret) \
|
|
goto end; \
|
|
\
|
|
u->desc.aname = num; \
|
|
ret = len; \
|
|
end: \
|
|
mutex_unlock(&opts->lock); \
|
|
mutex_unlock(su_mutex); \
|
|
return ret; \
|
|
} \
|
|
\
|
|
UVC_ATTR(uvcg_mjpeg_, cname, aname)
|
|
|
|
UVCG_MJPEG_ATTR_RO(b_format_index, bFormatIndex, 8);
|
|
UVCG_MJPEG_ATTR(b_default_frame_index, bDefaultFrameIndex, 8);
|
|
UVCG_MJPEG_ATTR_RO(bm_flags, bmFlags, 8);
|
|
UVCG_MJPEG_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, 8);
|
|
UVCG_MJPEG_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, 8);
|
|
UVCG_MJPEG_ATTR_RO(bm_interface_flags, bmInterfaceFlags, 8);
|
|
|
|
#undef UVCG_MJPEG_ATTR
|
|
#undef UVCG_MJPEG_ATTR_RO
|
|
|
|
static inline ssize_t
|
|
uvcg_mjpeg_bma_controls_show(struct config_item *item, char *page)
|
|
{
|
|
struct uvcg_mjpeg *u = to_uvcg_mjpeg(item);
|
|
return uvcg_format_bma_controls_show(&u->fmt, page);
|
|
}
|
|
|
|
static inline ssize_t
|
|
uvcg_mjpeg_bma_controls_store(struct config_item *item,
|
|
const char *page, size_t len)
|
|
{
|
|
struct uvcg_mjpeg *u = to_uvcg_mjpeg(item);
|
|
return uvcg_format_bma_controls_store(&u->fmt, page, len);
|
|
}
|
|
|
|
UVC_ATTR(uvcg_mjpeg_, bma_controls, bmaControls);
|
|
|
|
static struct configfs_attribute *uvcg_mjpeg_attrs[] = {
|
|
&uvcg_mjpeg_attr_b_format_index,
|
|
&uvcg_mjpeg_attr_b_default_frame_index,
|
|
&uvcg_mjpeg_attr_bm_flags,
|
|
&uvcg_mjpeg_attr_b_aspect_ratio_x,
|
|
&uvcg_mjpeg_attr_b_aspect_ratio_y,
|
|
&uvcg_mjpeg_attr_bm_interface_flags,
|
|
&uvcg_mjpeg_attr_bma_controls,
|
|
NULL,
|
|
};
|
|
|
|
static const struct config_item_type uvcg_mjpeg_type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_group_ops = &uvcg_mjpeg_group_ops,
|
|
.ct_attrs = uvcg_mjpeg_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
static struct config_group *uvcg_mjpeg_make(struct config_group *group,
|
|
const char *name)
|
|
{
|
|
struct uvcg_mjpeg *h;
|
|
|
|
h = kzalloc(sizeof(*h), GFP_KERNEL);
|
|
if (!h)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
h->desc.bLength = UVC_DT_FORMAT_MJPEG_SIZE;
|
|
h->desc.bDescriptorType = USB_DT_CS_INTERFACE;
|
|
h->desc.bDescriptorSubType = UVC_VS_FORMAT_MJPEG;
|
|
h->desc.bDefaultFrameIndex = 1;
|
|
h->desc.bAspectRatioX = 0;
|
|
h->desc.bAspectRatioY = 0;
|
|
h->desc.bmInterfaceFlags = 0;
|
|
h->desc.bCopyProtect = 0;
|
|
|
|
h->fmt.type = UVCG_MJPEG;
|
|
config_group_init_type_name(&h->fmt.group, name,
|
|
&uvcg_mjpeg_type);
|
|
|
|
return &h->fmt.group;
|
|
}
|
|
|
|
static struct configfs_group_operations uvcg_mjpeg_grp_ops = {
|
|
.make_group = uvcg_mjpeg_make,
|
|
};
|
|
|
|
static const struct uvcg_config_group_type uvcg_mjpeg_grp_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_group_ops = &uvcg_mjpeg_grp_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "mjpeg",
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* streaming/color_matching/default
|
|
*/
|
|
|
|
#define UVCG_DEFAULT_COLOR_MATCHING_ATTR(cname, aname, bits) \
|
|
static ssize_t uvcg_default_color_matching_##cname##_show( \
|
|
struct config_item *item, char *page) \
|
|
{ \
|
|
struct config_group *group = to_config_group(item); \
|
|
struct f_uvc_opts *opts; \
|
|
struct config_item *opts_item; \
|
|
struct mutex *su_mutex = &group->cg_subsys->su_mutex; \
|
|
struct uvc_color_matching_descriptor *cd; \
|
|
int result; \
|
|
\
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
|
|
\
|
|
opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; \
|
|
opts = to_f_uvc_opts(opts_item); \
|
|
cd = &opts->uvc_color_matching; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
result = sprintf(page, "%u\n", le##bits##_to_cpu(cd->aname)); \
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
mutex_unlock(su_mutex); \
|
|
return result; \
|
|
} \
|
|
\
|
|
UVC_ATTR_RO(uvcg_default_color_matching_, cname, aname)
|
|
|
|
UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_color_primaries, bColorPrimaries, 8);
|
|
UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_transfer_characteristics,
|
|
bTransferCharacteristics, 8);
|
|
UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_matrix_coefficients, bMatrixCoefficients, 8);
|
|
|
|
#undef UVCG_DEFAULT_COLOR_MATCHING_ATTR
|
|
|
|
static struct configfs_attribute *uvcg_default_color_matching_attrs[] = {
|
|
&uvcg_default_color_matching_attr_b_color_primaries,
|
|
&uvcg_default_color_matching_attr_b_transfer_characteristics,
|
|
&uvcg_default_color_matching_attr_b_matrix_coefficients,
|
|
NULL,
|
|
};
|
|
|
|
static const struct uvcg_config_group_type uvcg_default_color_matching_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_attrs = uvcg_default_color_matching_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "default",
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* streaming/color_matching
|
|
*/
|
|
|
|
static const struct uvcg_config_group_type uvcg_color_matching_grp_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "color_matching",
|
|
.children = (const struct uvcg_config_group_type*[]) {
|
|
&uvcg_default_color_matching_type,
|
|
NULL,
|
|
},
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* streaming/class/{fs|hs|ss}
|
|
*/
|
|
|
|
struct uvcg_streaming_class_group {
|
|
struct config_group group;
|
|
const char *name;
|
|
};
|
|
|
|
static inline struct uvc_descriptor_header
|
|
***__uvcg_get_stream_class_arr(struct config_item *i, struct f_uvc_opts *o)
|
|
{
|
|
struct uvcg_streaming_class_group *group =
|
|
container_of(i, struct uvcg_streaming_class_group,
|
|
group.cg_item);
|
|
|
|
if (!strcmp(group->name, "fs"))
|
|
return &o->uvc_fs_streaming_cls;
|
|
|
|
if (!strcmp(group->name, "hs"))
|
|
return &o->uvc_hs_streaming_cls;
|
|
|
|
if (!strcmp(group->name, "ss"))
|
|
return &o->uvc_ss_streaming_cls;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
enum uvcg_strm_type {
|
|
UVCG_HEADER = 0,
|
|
UVCG_FORMAT,
|
|
UVCG_FRAME
|
|
};
|
|
|
|
/*
|
|
* Iterate over a hierarchy of streaming descriptors' config items.
|
|
* The items are created by the user with configfs.
|
|
*
|
|
* It "processes" the header pointed to by @priv1, then for each format
|
|
* that follows the header "processes" the format itself and then for
|
|
* each frame inside a format "processes" the frame.
|
|
*
|
|
* As a "processing" function the @fun is used.
|
|
*
|
|
* __uvcg_iter_strm_cls() is used in two context: first, to calculate
|
|
* the amount of memory needed for an array of streaming descriptors
|
|
* and second, to actually fill the array.
|
|
*
|
|
* @h: streaming header pointer
|
|
* @priv2: an "inout" parameter (the caller might want to see the changes to it)
|
|
* @priv3: an "inout" parameter (the caller might want to see the changes to it)
|
|
* @fun: callback function for processing each level of the hierarchy
|
|
*/
|
|
static int __uvcg_iter_strm_cls(struct uvcg_streaming_header *h,
|
|
void *priv2, void *priv3,
|
|
int (*fun)(void *, void *, void *, int, enum uvcg_strm_type type))
|
|
{
|
|
struct uvcg_format_ptr *f;
|
|
struct config_group *grp;
|
|
struct config_item *item;
|
|
struct uvcg_frame *frm;
|
|
int ret, i, j;
|
|
|
|
if (!fun)
|
|
return -EINVAL;
|
|
|
|
i = j = 0;
|
|
ret = fun(h, priv2, priv3, 0, UVCG_HEADER);
|
|
if (ret)
|
|
return ret;
|
|
list_for_each_entry(f, &h->formats, entry) {
|
|
ret = fun(f->fmt, priv2, priv3, i++, UVCG_FORMAT);
|
|
if (ret)
|
|
return ret;
|
|
grp = &f->fmt->group;
|
|
list_for_each_entry(item, &grp->cg_children, ci_entry) {
|
|
frm = to_uvcg_frame(item);
|
|
ret = fun(frm, priv2, priv3, j++, UVCG_FRAME);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Count how many bytes are needed for an array of streaming descriptors.
|
|
*
|
|
* @priv1: pointer to a header, format or frame
|
|
* @priv2: inout parameter, accumulated size of the array
|
|
* @priv3: inout parameter, accumulated number of the array elements
|
|
* @n: unused, this function's prototype must match @fun in __uvcg_iter_strm_cls
|
|
*/
|
|
static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n,
|
|
enum uvcg_strm_type type)
|
|
{
|
|
size_t *size = priv2;
|
|
size_t *count = priv3;
|
|
|
|
switch (type) {
|
|
case UVCG_HEADER: {
|
|
struct uvcg_streaming_header *h = priv1;
|
|
|
|
*size += sizeof(h->desc);
|
|
/* bmaControls */
|
|
*size += h->num_fmt * UVCG_STREAMING_CONTROL_SIZE;
|
|
}
|
|
break;
|
|
case UVCG_FORMAT: {
|
|
struct uvcg_format *fmt = priv1;
|
|
|
|
if (fmt->type == UVCG_UNCOMPRESSED) {
|
|
struct uvcg_uncompressed *u =
|
|
container_of(fmt, struct uvcg_uncompressed,
|
|
fmt);
|
|
|
|
*size += sizeof(u->desc);
|
|
} else if (fmt->type == UVCG_MJPEG) {
|
|
struct uvcg_mjpeg *m =
|
|
container_of(fmt, struct uvcg_mjpeg, fmt);
|
|
|
|
*size += sizeof(m->desc);
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
break;
|
|
case UVCG_FRAME: {
|
|
struct uvcg_frame *frm = priv1;
|
|
int sz = sizeof(frm->dw_frame_interval);
|
|
|
|
*size += sizeof(frm->frame);
|
|
*size += frm->frame.b_frame_interval_type * sz;
|
|
}
|
|
break;
|
|
}
|
|
|
|
++*count;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Fill an array of streaming descriptors.
|
|
*
|
|
* @priv1: pointer to a header, format or frame
|
|
* @priv2: inout parameter, pointer into a block of memory
|
|
* @priv3: inout parameter, pointer to a 2-dimensional array
|
|
*/
|
|
static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n,
|
|
enum uvcg_strm_type type)
|
|
{
|
|
void **dest = priv2;
|
|
struct uvc_descriptor_header ***array = priv3;
|
|
size_t sz;
|
|
|
|
**array = *dest;
|
|
++*array;
|
|
|
|
switch (type) {
|
|
case UVCG_HEADER: {
|
|
struct uvc_input_header_descriptor *ihdr = *dest;
|
|
struct uvcg_streaming_header *h = priv1;
|
|
struct uvcg_format_ptr *f;
|
|
|
|
memcpy(*dest, &h->desc, sizeof(h->desc));
|
|
*dest += sizeof(h->desc);
|
|
sz = UVCG_STREAMING_CONTROL_SIZE;
|
|
list_for_each_entry(f, &h->formats, entry) {
|
|
memcpy(*dest, f->fmt->bmaControls, sz);
|
|
*dest += sz;
|
|
}
|
|
ihdr->bLength = sizeof(h->desc) + h->num_fmt * sz;
|
|
ihdr->bNumFormats = h->num_fmt;
|
|
}
|
|
break;
|
|
case UVCG_FORMAT: {
|
|
struct uvcg_format *fmt = priv1;
|
|
|
|
if (fmt->type == UVCG_UNCOMPRESSED) {
|
|
struct uvcg_uncompressed *u =
|
|
container_of(fmt, struct uvcg_uncompressed,
|
|
fmt);
|
|
|
|
u->desc.bFormatIndex = n + 1;
|
|
u->desc.bNumFrameDescriptors = fmt->num_frames;
|
|
memcpy(*dest, &u->desc, sizeof(u->desc));
|
|
*dest += sizeof(u->desc);
|
|
} else if (fmt->type == UVCG_MJPEG) {
|
|
struct uvcg_mjpeg *m =
|
|
container_of(fmt, struct uvcg_mjpeg, fmt);
|
|
|
|
m->desc.bFormatIndex = n + 1;
|
|
m->desc.bNumFrameDescriptors = fmt->num_frames;
|
|
memcpy(*dest, &m->desc, sizeof(m->desc));
|
|
*dest += sizeof(m->desc);
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
break;
|
|
case UVCG_FRAME: {
|
|
struct uvcg_frame *frm = priv1;
|
|
struct uvc_descriptor_header *h = *dest;
|
|
|
|
sz = sizeof(frm->frame);
|
|
memcpy(*dest, &frm->frame, sz);
|
|
*dest += sz;
|
|
sz = frm->frame.b_frame_interval_type *
|
|
sizeof(*frm->dw_frame_interval);
|
|
memcpy(*dest, frm->dw_frame_interval, sz);
|
|
*dest += sz;
|
|
if (frm->fmt_type == UVCG_UNCOMPRESSED)
|
|
h->bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(
|
|
frm->frame.b_frame_interval_type);
|
|
else if (frm->fmt_type == UVCG_MJPEG)
|
|
h->bLength = UVC_DT_FRAME_MJPEG_SIZE(
|
|
frm->frame.b_frame_interval_type);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int uvcg_streaming_class_allow_link(struct config_item *src,
|
|
struct config_item *target)
|
|
{
|
|
struct config_item *streaming, *header;
|
|
struct f_uvc_opts *opts;
|
|
struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex;
|
|
struct uvc_descriptor_header ***class_array, **cl_arr;
|
|
struct uvcg_streaming_header *target_hdr;
|
|
void *data, *data_save;
|
|
size_t size = 0, count = 0;
|
|
int ret = -EINVAL;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
streaming = src->ci_parent->ci_parent;
|
|
header = config_group_find_item(to_config_group(streaming), "header");
|
|
if (!header || target->ci_parent != header)
|
|
goto out;
|
|
|
|
opts = to_f_uvc_opts(streaming->ci_parent);
|
|
|
|
mutex_lock(&opts->lock);
|
|
|
|
class_array = __uvcg_get_stream_class_arr(src, opts);
|
|
if (!class_array || *class_array || opts->refcnt) {
|
|
ret = -EBUSY;
|
|
goto unlock;
|
|
}
|
|
|
|
target_hdr = to_uvcg_streaming_header(target);
|
|
ret = __uvcg_iter_strm_cls(target_hdr, &size, &count, __uvcg_cnt_strm);
|
|
if (ret)
|
|
goto unlock;
|
|
|
|
count += 2; /* color_matching, NULL */
|
|
*class_array = kcalloc(count, sizeof(void *), GFP_KERNEL);
|
|
if (!*class_array) {
|
|
ret = -ENOMEM;
|
|
goto unlock;
|
|
}
|
|
|
|
data = data_save = kzalloc(size, GFP_KERNEL);
|
|
if (!data) {
|
|
kfree(*class_array);
|
|
*class_array = NULL;
|
|
ret = -ENOMEM;
|
|
goto unlock;
|
|
}
|
|
cl_arr = *class_array;
|
|
ret = __uvcg_iter_strm_cls(target_hdr, &data, &cl_arr,
|
|
__uvcg_fill_strm);
|
|
if (ret) {
|
|
kfree(*class_array);
|
|
*class_array = NULL;
|
|
/*
|
|
* __uvcg_fill_strm() called from __uvcg_iter_stream_cls()
|
|
* might have advanced the "data", so use a backup copy
|
|
*/
|
|
kfree(data_save);
|
|
goto unlock;
|
|
}
|
|
*cl_arr = (struct uvc_descriptor_header *)&opts->uvc_color_matching;
|
|
|
|
++target_hdr->linked;
|
|
ret = 0;
|
|
|
|
unlock:
|
|
mutex_unlock(&opts->lock);
|
|
out:
|
|
config_item_put(header);
|
|
mutex_unlock(su_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static void uvcg_streaming_class_drop_link(struct config_item *src,
|
|
struct config_item *target)
|
|
{
|
|
struct config_item *streaming, *header;
|
|
struct f_uvc_opts *opts;
|
|
struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex;
|
|
struct uvc_descriptor_header ***class_array;
|
|
struct uvcg_streaming_header *target_hdr;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
streaming = src->ci_parent->ci_parent;
|
|
header = config_group_find_item(to_config_group(streaming), "header");
|
|
if (!header || target->ci_parent != header)
|
|
goto out;
|
|
|
|
opts = to_f_uvc_opts(streaming->ci_parent);
|
|
|
|
mutex_lock(&opts->lock);
|
|
|
|
class_array = __uvcg_get_stream_class_arr(src, opts);
|
|
if (!class_array || !*class_array)
|
|
goto unlock;
|
|
|
|
if (opts->refcnt)
|
|
goto unlock;
|
|
|
|
target_hdr = to_uvcg_streaming_header(target);
|
|
--target_hdr->linked;
|
|
kfree(**class_array);
|
|
kfree(*class_array);
|
|
*class_array = NULL;
|
|
|
|
unlock:
|
|
mutex_unlock(&opts->lock);
|
|
out:
|
|
config_item_put(header);
|
|
mutex_unlock(su_mutex);
|
|
}
|
|
|
|
static struct configfs_item_operations uvcg_streaming_class_item_ops = {
|
|
.release = uvcg_config_item_release,
|
|
.allow_link = uvcg_streaming_class_allow_link,
|
|
.drop_link = uvcg_streaming_class_drop_link,
|
|
};
|
|
|
|
static const struct config_item_type uvcg_streaming_class_type = {
|
|
.ct_item_ops = &uvcg_streaming_class_item_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* streaming/class
|
|
*/
|
|
|
|
static int uvcg_streaming_class_create_children(struct config_group *parent)
|
|
{
|
|
static const char * const names[] = { "fs", "hs", "ss" };
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(names); ++i) {
|
|
struct uvcg_streaming_class_group *group;
|
|
|
|
group = kzalloc(sizeof(*group), GFP_KERNEL);
|
|
if (!group)
|
|
return -ENOMEM;
|
|
|
|
group->name = names[i];
|
|
|
|
config_group_init_type_name(&group->group, group->name,
|
|
&uvcg_streaming_class_type);
|
|
configfs_add_default_group(&group->group, parent);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct uvcg_config_group_type uvcg_streaming_class_grp_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "class",
|
|
.create_children = uvcg_streaming_class_create_children,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* streaming
|
|
*/
|
|
|
|
static ssize_t uvcg_default_streaming_b_interface_number_show(
|
|
struct config_item *item, char *page)
|
|
{
|
|
struct config_group *group = to_config_group(item);
|
|
struct mutex *su_mutex = &group->cg_subsys->su_mutex;
|
|
struct config_item *opts_item;
|
|
struct f_uvc_opts *opts;
|
|
int result = 0;
|
|
|
|
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
|
|
|
|
opts_item = item->ci_parent;
|
|
opts = to_f_uvc_opts(opts_item);
|
|
|
|
mutex_lock(&opts->lock);
|
|
result += sprintf(page, "%u\n", opts->streaming_interface);
|
|
mutex_unlock(&opts->lock);
|
|
|
|
mutex_unlock(su_mutex);
|
|
|
|
return result;
|
|
}
|
|
|
|
UVC_ATTR_RO(uvcg_default_streaming_, b_interface_number, bInterfaceNumber);
|
|
|
|
static struct configfs_attribute *uvcg_default_streaming_attrs[] = {
|
|
&uvcg_default_streaming_attr_b_interface_number,
|
|
NULL,
|
|
};
|
|
|
|
static const struct uvcg_config_group_type uvcg_streaming_grp_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvcg_config_item_ops,
|
|
.ct_attrs = uvcg_default_streaming_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "streaming",
|
|
.children = (const struct uvcg_config_group_type*[]) {
|
|
&uvcg_streaming_header_grp_type,
|
|
&uvcg_uncompressed_grp_type,
|
|
&uvcg_mjpeg_grp_type,
|
|
&uvcg_color_matching_grp_type,
|
|
&uvcg_streaming_class_grp_type,
|
|
NULL,
|
|
},
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* UVC function
|
|
*/
|
|
|
|
static void uvc_func_item_release(struct config_item *item)
|
|
{
|
|
struct f_uvc_opts *opts = to_f_uvc_opts(item);
|
|
|
|
uvcg_config_remove_children(to_config_group(item));
|
|
usb_put_function_instance(&opts->func_inst);
|
|
}
|
|
|
|
static struct configfs_item_operations uvc_func_item_ops = {
|
|
.release = uvc_func_item_release,
|
|
};
|
|
|
|
#define UVCG_OPTS_ATTR(cname, aname, limit) \
|
|
static ssize_t f_uvc_opts_##cname##_show( \
|
|
struct config_item *item, char *page) \
|
|
{ \
|
|
struct f_uvc_opts *opts = to_f_uvc_opts(item); \
|
|
int result; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
result = sprintf(page, "%u\n", opts->cname); \
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
return result; \
|
|
} \
|
|
\
|
|
static ssize_t \
|
|
f_uvc_opts_##cname##_store(struct config_item *item, \
|
|
const char *page, size_t len) \
|
|
{ \
|
|
struct f_uvc_opts *opts = to_f_uvc_opts(item); \
|
|
unsigned int num; \
|
|
int ret; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
if (opts->refcnt) { \
|
|
ret = -EBUSY; \
|
|
goto end; \
|
|
} \
|
|
\
|
|
ret = kstrtouint(page, 0, &num); \
|
|
if (ret) \
|
|
goto end; \
|
|
\
|
|
if (num > limit) { \
|
|
ret = -EINVAL; \
|
|
goto end; \
|
|
} \
|
|
opts->cname = num; \
|
|
ret = len; \
|
|
end: \
|
|
mutex_unlock(&opts->lock); \
|
|
return ret; \
|
|
} \
|
|
\
|
|
UVC_ATTR(f_uvc_opts_, cname, cname)
|
|
|
|
UVCG_OPTS_ATTR(streaming_interval, streaming_interval, 16);
|
|
UVCG_OPTS_ATTR(streaming_maxpacket, streaming_maxpacket, 3072);
|
|
UVCG_OPTS_ATTR(streaming_maxburst, streaming_maxburst, 15);
|
|
|
|
#undef UVCG_OPTS_ATTR
|
|
|
|
static struct configfs_attribute *uvc_attrs[] = {
|
|
&f_uvc_opts_attr_streaming_interval,
|
|
&f_uvc_opts_attr_streaming_maxpacket,
|
|
&f_uvc_opts_attr_streaming_maxburst,
|
|
NULL,
|
|
};
|
|
|
|
static const struct uvcg_config_group_type uvc_func_type = {
|
|
.type = {
|
|
.ct_item_ops = &uvc_func_item_ops,
|
|
.ct_attrs = uvc_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
},
|
|
.name = "",
|
|
.children = (const struct uvcg_config_group_type*[]) {
|
|
&uvcg_control_grp_type,
|
|
&uvcg_streaming_grp_type,
|
|
NULL,
|
|
},
|
|
};
|
|
|
|
int uvcg_attach_configfs(struct f_uvc_opts *opts)
|
|
{
|
|
int ret;
|
|
|
|
config_group_init_type_name(&opts->func_inst.group, uvc_func_type.name,
|
|
&uvc_func_type.type);
|
|
|
|
ret = uvcg_config_create_children(&opts->func_inst.group,
|
|
&uvc_func_type);
|
|
if (ret < 0)
|
|
config_group_put(&opts->func_inst.group);
|
|
|
|
return ret;
|
|
}
|