^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Media device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2010 Nokia Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Sakari Ailus <sakari.ailus@iki.fi>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/idr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/media.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/version.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <trace/hooks/v4l2mc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <media/media-device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <media/media-devnode.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <media/media-entity.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <media/media-request.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #ifdef CONFIG_MEDIA_CONTROLLER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * Legacy defines from linux/media.h. This is the only place we need this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * so we just define it here. The media.h header doesn't expose it to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * kernel to prevent it from being used by drivers, but here (and only here!)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * we need it to handle the legacy behavior.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define MEDIA_ENT_T_DEVNODE_UNKNOWN (MEDIA_ENT_F_OLD_BASE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) MEDIA_ENT_SUBTYPE_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /* -----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * Userspace API
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static inline void __user *media_get_uptr(__u64 arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) return (void __user *)(uintptr_t)arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static int media_device_open(struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static int media_device_close(struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static long media_device_get_info(struct media_device *dev, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct media_device_info *info = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) memset(info, 0, sizeof(*info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (dev->driver_name[0])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) strscpy(info->driver, dev->driver_name, sizeof(info->driver));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) strscpy(info->driver, dev->dev->driver->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) sizeof(info->driver));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) strscpy(info->model, dev->model, sizeof(info->model));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) strscpy(info->serial, dev->serial, sizeof(info->serial));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) strscpy(info->bus_info, dev->bus_info, sizeof(info->bus_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) info->media_version = LINUX_VERSION_CODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) info->driver_version = info->media_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) info->hw_revision = dev->hw_revision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) static struct media_entity *find_entity(struct media_device *mdev, u32 id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct media_entity *entity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int next = id & MEDIA_ENT_ID_FLAG_NEXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) id &= ~MEDIA_ENT_ID_FLAG_NEXT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) media_device_for_each_entity(entity, mdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (((media_entity_id(entity) == id) && !next) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) ((media_entity_id(entity) > id) && next)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return entity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static long media_device_enum_entities(struct media_device *mdev, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct media_entity_desc *entd = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct media_entity *ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) ent = find_entity(mdev, entd->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (ent == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) memset(entd, 0, sizeof(*entd));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) entd->id = media_entity_id(ent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (ent->name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) strscpy(entd->name, ent->name, sizeof(entd->name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) entd->type = ent->function;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) entd->revision = 0; /* Unused */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) entd->flags = ent->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) entd->group_id = 0; /* Unused */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) entd->pads = ent->num_pads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) entd->links = ent->num_links - ent->num_backlinks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * Workaround for a bug at media-ctl <= v1.10 that makes it to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * do the wrong thing if the entity function doesn't belong to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * either MEDIA_ENT_F_OLD_BASE or MEDIA_ENT_F_OLD_SUBDEV_BASE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * Ranges.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * Non-subdevices are expected to be at the MEDIA_ENT_F_OLD_BASE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * or, otherwise, will be silently ignored by media-ctl when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * printing the graphviz diagram. So, map them into the devnode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * old range.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (ent->function < MEDIA_ENT_F_OLD_BASE ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ent->function > MEDIA_ENT_F_TUNER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (is_media_entity_v4l2_subdev(ent))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) entd->type = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) else if (ent->function != MEDIA_ENT_F_IO_V4L)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) entd->type = MEDIA_ENT_T_DEVNODE_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) memcpy(&entd->raw, &ent->info, sizeof(ent->info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static void media_device_kpad_to_upad(const struct media_pad *kpad,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) struct media_pad_desc *upad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) upad->entity = media_entity_id(kpad->entity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) upad->index = kpad->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) upad->flags = kpad->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static long media_device_enum_links(struct media_device *mdev, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct media_links_enum *links = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct media_entity *entity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) entity = find_entity(mdev, links->entity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) if (entity == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (links->pads) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) unsigned int p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) for (p = 0; p < entity->num_pads; p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct media_pad_desc pad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) memset(&pad, 0, sizeof(pad));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) media_device_kpad_to_upad(&entity->pads[p], &pad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (copy_to_user(&links->pads[p], &pad, sizeof(pad)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) if (links->links) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) struct media_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) struct media_link_desc __user *ulink_desc = links->links;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) list_for_each_entry(link, &entity->links, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct media_link_desc klink_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /* Ignore backlinks. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (link->source->entity != entity)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) memset(&klink_desc, 0, sizeof(klink_desc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) media_device_kpad_to_upad(link->source,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) &klink_desc.source);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) media_device_kpad_to_upad(link->sink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) &klink_desc.sink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) klink_desc.flags = link->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (copy_to_user(ulink_desc, &klink_desc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) sizeof(*ulink_desc)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) ulink_desc++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) memset(links->reserved, 0, sizeof(links->reserved));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) static long media_device_setup_link(struct media_device *mdev, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) struct media_link_desc *linkd = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct media_link *link = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) struct media_entity *source;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) struct media_entity *sink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) /* Find the source and sink entities and link.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) source = find_entity(mdev, linkd->source.entity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) sink = find_entity(mdev, linkd->sink.entity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) if (source == NULL || sink == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (linkd->source.index >= source->num_pads ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) linkd->sink.index >= sink->num_pads)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) link = media_entity_find_link(&source->pads[linkd->source.index],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) &sink->pads[linkd->sink.index]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (link == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) /* Setup the link on both entities */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) trace_android_vh_media_device_setup_link(link, linkd, &ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) trace_android_rvh_media_device_setup_link(link, linkd, &ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) memset(linkd->reserved, 0, sizeof(linkd->reserved));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return __media_entity_setup_link(link, linkd->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static long media_device_get_topology(struct media_device *mdev, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct media_v2_topology *topo = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct media_entity *entity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct media_interface *intf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct media_pad *pad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) struct media_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) struct media_v2_entity kentity, __user *uentity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) struct media_v2_interface kintf, __user *uintf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) struct media_v2_pad kpad, __user *upad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) struct media_v2_link klink, __user *ulink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) topo->topology_version = mdev->topology_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) /* Get entities and number of entities */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) uentity = media_get_uptr(topo->ptr_entities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) media_device_for_each_entity(entity, mdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) if (ret || !uentity)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (i > topo->num_entities) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) ret = -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) /* Copy fields to userspace struct if not error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) memset(&kentity, 0, sizeof(kentity));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) kentity.id = entity->graph_obj.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) kentity.function = entity->function;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) kentity.flags = entity->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) strscpy(kentity.name, entity->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) sizeof(kentity.name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (copy_to_user(uentity, &kentity, sizeof(kentity)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) uentity++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) topo->num_entities = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) topo->reserved1 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) /* Get interfaces and number of interfaces */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) uintf = media_get_uptr(topo->ptr_interfaces);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) media_device_for_each_intf(intf, mdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (ret || !uintf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (i > topo->num_interfaces) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) ret = -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) memset(&kintf, 0, sizeof(kintf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) /* Copy intf fields to userspace struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) kintf.id = intf->graph_obj.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) kintf.intf_type = intf->type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) kintf.flags = intf->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (media_type(&intf->graph_obj) == MEDIA_GRAPH_INTF_DEVNODE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) struct media_intf_devnode *devnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) devnode = intf_to_devnode(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) kintf.devnode.major = devnode->major;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) kintf.devnode.minor = devnode->minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (copy_to_user(uintf, &kintf, sizeof(kintf)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) uintf++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) topo->num_interfaces = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) topo->reserved2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) /* Get pads and number of pads */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) upad = media_get_uptr(topo->ptr_pads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) media_device_for_each_pad(pad, mdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (ret || !upad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (i > topo->num_pads) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) ret = -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) memset(&kpad, 0, sizeof(kpad));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) /* Copy pad fields to userspace struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) kpad.id = pad->graph_obj.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) kpad.entity_id = pad->entity->graph_obj.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) kpad.flags = pad->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) kpad.index = pad->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (copy_to_user(upad, &kpad, sizeof(kpad)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) upad++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) topo->num_pads = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) topo->reserved3 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) /* Get links and number of links */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) ulink = media_get_uptr(topo->ptr_links);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) media_device_for_each_link(link, mdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (link->is_backlink)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) if (ret || !ulink)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (i > topo->num_links) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) ret = -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) memset(&klink, 0, sizeof(klink));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) /* Copy link fields to userspace struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) klink.id = link->graph_obj.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) klink.source_id = link->gobj0->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) klink.sink_id = link->gobj1->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) klink.flags = link->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) if (copy_to_user(ulink, &klink, sizeof(klink)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) ulink++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) topo->num_links = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) topo->reserved4 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) static long media_device_request_alloc(struct media_device *mdev, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) #ifdef CONFIG_MEDIA_CONTROLLER_REQUEST_API
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) int *alloc_fd = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) if (!mdev->ops || !mdev->ops->req_validate || !mdev->ops->req_queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) return -ENOTTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) return media_request_alloc(mdev, alloc_fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) return -ENOTTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) static long copy_arg_from_user(void *karg, void __user *uarg, unsigned int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) if ((_IOC_DIR(cmd) & _IOC_WRITE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) copy_from_user(karg, uarg, _IOC_SIZE(cmd)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) static long copy_arg_to_user(void __user *uarg, void *karg, unsigned int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) if ((_IOC_DIR(cmd) & _IOC_READ) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) copy_to_user(uarg, karg, _IOC_SIZE(cmd)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) /* Do acquire the graph mutex */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) #define MEDIA_IOC_FL_GRAPH_MUTEX BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) #define MEDIA_IOC_ARG(__cmd, func, fl, from_user, to_user) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) [_IOC_NR(MEDIA_IOC_##__cmd)] = { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) .cmd = MEDIA_IOC_##__cmd, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) .fn = func, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) .flags = fl, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) .arg_from_user = from_user, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) .arg_to_user = to_user, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) #define MEDIA_IOC(__cmd, func, fl) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) MEDIA_IOC_ARG(__cmd, func, fl, copy_arg_from_user, copy_arg_to_user)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) /* the table is indexed by _IOC_NR(cmd) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) struct media_ioctl_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) unsigned int cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) unsigned short flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) long (*fn)(struct media_device *dev, void *arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) long (*arg_from_user)(void *karg, void __user *uarg, unsigned int cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) long (*arg_to_user)(void __user *uarg, void *karg, unsigned int cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) static const struct media_ioctl_info ioctl_info[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) MEDIA_IOC(DEVICE_INFO, media_device_get_info, MEDIA_IOC_FL_GRAPH_MUTEX),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) MEDIA_IOC(ENUM_ENTITIES, media_device_enum_entities, MEDIA_IOC_FL_GRAPH_MUTEX),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) MEDIA_IOC(ENUM_LINKS, media_device_enum_links, MEDIA_IOC_FL_GRAPH_MUTEX),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) MEDIA_IOC(SETUP_LINK, media_device_setup_link, MEDIA_IOC_FL_GRAPH_MUTEX),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) MEDIA_IOC(G_TOPOLOGY, media_device_get_topology, MEDIA_IOC_FL_GRAPH_MUTEX),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) MEDIA_IOC(REQUEST_ALLOC, media_device_request_alloc, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) static long media_device_ioctl(struct file *filp, unsigned int cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) unsigned long __arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) struct media_devnode *devnode = media_devnode_data(filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) struct media_device *dev = devnode->media_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) const struct media_ioctl_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) void __user *arg = (void __user *)__arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) char __karg[256], *karg = __karg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) long ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (_IOC_NR(cmd) >= ARRAY_SIZE(ioctl_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) || ioctl_info[_IOC_NR(cmd)].cmd != cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) return -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) info = &ioctl_info[_IOC_NR(cmd)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) if (_IOC_SIZE(info->cmd) > sizeof(__karg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) karg = kmalloc(_IOC_SIZE(info->cmd), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) if (!karg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) if (info->arg_from_user) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) ret = info->arg_from_user(karg, arg, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (info->flags & MEDIA_IOC_FL_GRAPH_MUTEX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) mutex_lock(&dev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) ret = info->fn(dev, karg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) if (info->flags & MEDIA_IOC_FL_GRAPH_MUTEX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) mutex_unlock(&dev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (!ret && info->arg_to_user)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) ret = info->arg_to_user(arg, karg, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) if (karg != __karg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) kfree(karg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) struct media_links_enum32 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) __u32 entity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) compat_uptr_t pads; /* struct media_pad_desc * */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) compat_uptr_t links; /* struct media_link_desc * */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) __u32 reserved[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) static long media_device_enum_links32(struct media_device *mdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) struct media_links_enum32 __user *ulinks)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) struct media_links_enum links;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) compat_uptr_t pads_ptr, links_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) memset(&links, 0, sizeof(links));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (get_user(links.entity, &ulinks->entity)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) || get_user(pads_ptr, &ulinks->pads)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) || get_user(links_ptr, &ulinks->links))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) links.pads = compat_ptr(pads_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) links.links = compat_ptr(links_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) ret = media_device_enum_links(mdev, &links);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (copy_to_user(ulinks->reserved, links.reserved,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) sizeof(ulinks->reserved)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) #define MEDIA_IOC_ENUM_LINKS32 _IOWR('|', 0x02, struct media_links_enum32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) static long media_device_compat_ioctl(struct file *filp, unsigned int cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) struct media_devnode *devnode = media_devnode_data(filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) struct media_device *dev = devnode->media_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) long ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) case MEDIA_IOC_ENUM_LINKS32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) mutex_lock(&dev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) ret = media_device_enum_links32(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) (struct media_links_enum32 __user *)arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) mutex_unlock(&dev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) return media_device_ioctl(filp, cmd, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) #endif /* CONFIG_COMPAT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) static const struct media_file_operations media_device_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) .open = media_device_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) .ioctl = media_device_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) .compat_ioctl = media_device_compat_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) #endif /* CONFIG_COMPAT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) .release = media_device_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) /* -----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) * sysfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) static ssize_t show_model(struct device *cd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) struct media_devnode *devnode = to_media_devnode(cd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) struct media_device *mdev = devnode->media_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) return sprintf(buf, "%.*s\n", (int)sizeof(mdev->model), mdev->model);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) /* -----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) * Registration/unregistration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) static void media_device_release(struct media_devnode *devnode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) dev_dbg(devnode->parent, "Media device released\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) static void __media_device_unregister_entity(struct media_entity *entity)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) struct media_device *mdev = entity->graph_obj.mdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) struct media_link *link, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) struct media_interface *intf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) ida_free(&mdev->entity_internal_idx, entity->internal_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) /* Remove all interface links pointing to this entity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) list_for_each_entry(intf, &mdev->interfaces, graph_obj.list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) list_for_each_entry_safe(link, tmp, &intf->links, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (link->entity == entity)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) __media_remove_intf_link(link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) /* Remove all data links that belong to this entity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) __media_entity_remove_links(entity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) /* Remove all pads that belong to this entity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) for (i = 0; i < entity->num_pads; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) media_gobj_destroy(&entity->pads[i].graph_obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) /* Remove the entity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) media_gobj_destroy(&entity->graph_obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) /* invoke entity_notify callbacks to handle entity removal?? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) entity->graph_obj.mdev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) * media_device_register_entity - Register an entity with a media device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) * @mdev: The media device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) * @entity: The entity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) int __must_check media_device_register_entity(struct media_device *mdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) struct media_entity *entity)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) struct media_entity_notify *notify, *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) if (entity->function == MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) entity->function == MEDIA_ENT_F_UNKNOWN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) dev_warn(mdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) "Entity type for entity %s was not initialized!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) entity->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) /* Warn if we apparently re-register an entity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) WARN_ON(entity->graph_obj.mdev != NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) entity->graph_obj.mdev = mdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) INIT_LIST_HEAD(&entity->links);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) entity->num_links = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) entity->num_backlinks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) ret = ida_alloc_min(&mdev->entity_internal_idx, 1, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) entity->internal_idx = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) mutex_lock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) mdev->entity_internal_idx_max =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) max(mdev->entity_internal_idx_max, entity->internal_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) /* Initialize media_gobj embedded at the entity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) media_gobj_create(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) /* Initialize objects at the pads */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) for (i = 0; i < entity->num_pads; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) media_gobj_create(mdev, MEDIA_GRAPH_PAD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) &entity->pads[i].graph_obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) /* invoke entity_notify callbacks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) list_for_each_entry_safe(notify, next, &mdev->entity_notify, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) notify->notify(entity, notify->notify_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) if (mdev->entity_internal_idx_max
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) >= mdev->pm_count_walk.ent_enum.idx_max) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) struct media_graph new = { .top = 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) * Initialise the new graph walk before cleaning up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) * the old one in order not to spoil the graph walk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) * object of the media device if graph walk init fails.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) ret = media_graph_walk_init(&new, mdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) __media_device_unregister_entity(entity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) mutex_unlock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) media_graph_walk_cleanup(&mdev->pm_count_walk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) mdev->pm_count_walk = new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) mutex_unlock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) EXPORT_SYMBOL_GPL(media_device_register_entity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) void media_device_unregister_entity(struct media_entity *entity)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) struct media_device *mdev = entity->graph_obj.mdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) if (mdev == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) mutex_lock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) __media_device_unregister_entity(entity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) mutex_unlock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) EXPORT_SYMBOL_GPL(media_device_unregister_entity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) * media_device_init() - initialize a media device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) * @mdev: The media device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) * The caller is responsible for initializing the media device before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) * registration. The following fields must be set:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) * - dev must point to the parent device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) * - model must be filled with the device model name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) void media_device_init(struct media_device *mdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) INIT_LIST_HEAD(&mdev->entities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) INIT_LIST_HEAD(&mdev->interfaces);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) INIT_LIST_HEAD(&mdev->pads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) INIT_LIST_HEAD(&mdev->links);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) INIT_LIST_HEAD(&mdev->entity_notify);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) mutex_init(&mdev->req_queue_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) mutex_init(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) ida_init(&mdev->entity_internal_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) atomic_set(&mdev->request_id, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) dev_dbg(mdev->dev, "Media device initialized\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) EXPORT_SYMBOL_GPL(media_device_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) void media_device_cleanup(struct media_device *mdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) ida_destroy(&mdev->entity_internal_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) mdev->entity_internal_idx_max = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) media_graph_walk_cleanup(&mdev->pm_count_walk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) mutex_destroy(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) mutex_destroy(&mdev->req_queue_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) EXPORT_SYMBOL_GPL(media_device_cleanup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) int __must_check __media_device_register(struct media_device *mdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) struct module *owner)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) struct media_devnode *devnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) devnode = kzalloc(sizeof(*devnode), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) if (!devnode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) /* Register the device node. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) mdev->devnode = devnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) devnode->fops = &media_device_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) devnode->parent = mdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) devnode->release = media_device_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) /* Set version 0 to indicate user-space that the graph is static */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) mdev->topology_version = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) ret = media_devnode_register(mdev, devnode, owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) /* devnode free is handled in media_devnode_*() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) mdev->devnode = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) ret = device_create_file(&devnode->dev, &dev_attr_model);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) /* devnode free is handled in media_devnode_*() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) mdev->devnode = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) media_devnode_unregister_prepare(devnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) media_devnode_unregister(devnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) dev_dbg(mdev->dev, "Media device registered\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) EXPORT_SYMBOL_GPL(__media_device_register);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) int __must_check media_device_register_entity_notify(struct media_device *mdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) struct media_entity_notify *nptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) mutex_lock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) list_add_tail(&nptr->list, &mdev->entity_notify);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) mutex_unlock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) EXPORT_SYMBOL_GPL(media_device_register_entity_notify);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) * Note: Should be called with mdev->lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) static void __media_device_unregister_entity_notify(struct media_device *mdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) struct media_entity_notify *nptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) list_del(&nptr->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) void media_device_unregister_entity_notify(struct media_device *mdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) struct media_entity_notify *nptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) mutex_lock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) __media_device_unregister_entity_notify(mdev, nptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) mutex_unlock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) EXPORT_SYMBOL_GPL(media_device_unregister_entity_notify);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) void media_device_unregister(struct media_device *mdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) struct media_entity *entity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) struct media_entity *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) struct media_interface *intf, *tmp_intf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) struct media_entity_notify *notify, *nextp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) if (mdev == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) mutex_lock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) /* Check if mdev was ever registered at all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) if (!media_devnode_is_registered(mdev->devnode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) mutex_unlock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) /* Clear the devnode register bit to avoid races with media dev open */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) media_devnode_unregister_prepare(mdev->devnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) /* Remove all entities from the media device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) __media_device_unregister_entity(entity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) /* Remove all entity_notify callbacks from the media device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) list_for_each_entry_safe(notify, nextp, &mdev->entity_notify, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) __media_device_unregister_entity_notify(mdev, notify);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) /* Remove all interfaces from the media device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) graph_obj.list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) * Unlink the interface, but don't free it here; the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) * module which created it is responsible for freeing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) * it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) __media_remove_intf_links(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) media_gobj_destroy(&intf->graph_obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) mutex_unlock(&mdev->graph_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) dev_dbg(mdev->dev, "Media device unregistered\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) device_remove_file(&mdev->devnode->dev, &dev_attr_model);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) media_devnode_unregister(mdev->devnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) /* devnode free is handled in media_devnode_*() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) mdev->devnode = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) EXPORT_SYMBOL_GPL(media_device_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) #if IS_ENABLED(CONFIG_PCI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) void media_device_pci_init(struct media_device *mdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) struct pci_dev *pci_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) mdev->dev = &pci_dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) if (name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) strscpy(mdev->model, name, sizeof(mdev->model));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) strscpy(mdev->model, pci_name(pci_dev), sizeof(mdev->model));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) sprintf(mdev->bus_info, "PCI:%s", pci_name(pci_dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) mdev->hw_revision = (pci_dev->subsystem_vendor << 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) | pci_dev->subsystem_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) media_device_init(mdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) EXPORT_SYMBOL_GPL(media_device_pci_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) #if IS_ENABLED(CONFIG_USB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) void __media_device_usb_init(struct media_device *mdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) struct usb_device *udev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) const char *board_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) const char *driver_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) mdev->dev = &udev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) if (driver_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) strscpy(mdev->driver_name, driver_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) sizeof(mdev->driver_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) if (board_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) strscpy(mdev->model, board_name, sizeof(mdev->model));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) else if (udev->product)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) strscpy(mdev->model, udev->product, sizeof(mdev->model));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) strscpy(mdev->model, "unknown model", sizeof(mdev->model));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) if (udev->serial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) strscpy(mdev->serial, udev->serial, sizeof(mdev->serial));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) usb_make_path(udev, mdev->bus_info, sizeof(mdev->bus_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) media_device_init(mdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) EXPORT_SYMBOL_GPL(__media_device_usb_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) #endif /* CONFIG_MEDIA_CONTROLLER */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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