diff options
Diffstat (limited to 'drivers/staging/most/configfs.c')
| -rw-r--r-- | drivers/staging/most/configfs.c | 60 |
1 files changed, 44 insertions, 16 deletions
diff --git a/drivers/staging/most/configfs.c b/drivers/staging/most/configfs.c index cb714f64d279..aeeb5ec6199c 100644 --- a/drivers/staging/most/configfs.c +++ b/drivers/staging/most/configfs.c @@ -14,6 +14,7 @@ struct mdev_link { struct config_item item; + struct list_head list; bool create_link; u16 num_buffers; u16 buffer_size; @@ -29,6 +30,8 @@ struct mdev_link { char comp_params[PAGE_SIZE]; }; +struct list_head mdev_link_list; + static int set_cfg_buffer_size(struct mdev_link *link) { if (!link->buffer_size) @@ -106,33 +109,41 @@ static ssize_t mdev_link_create_link_show(struct config_item *item, char *page) to_mdev_link(item)->create_link); } +static int set_config_and_add_link(struct mdev_link *mdev_link) +{ + int i; + int ret; + + for (i = 0; i < ARRAY_SIZE(set_config_val); i++) { + ret = set_config_val[i](mdev_link); + if (ret < 0 && ret != -ENODEV) { + pr_err("Config failed\n"); + return ret; + } + } + + return most_add_link(mdev_link->device, mdev_link->channel, + mdev_link->comp, mdev_link->name, + mdev_link->comp_params); +} + static ssize_t mdev_link_create_link_store(struct config_item *item, const char *page, size_t count) { struct mdev_link *mdev_link = to_mdev_link(item); bool tmp; int ret; - int i; ret = kstrtobool(page, &tmp); if (ret) return ret; - - for (i = 0; i < ARRAY_SIZE(set_config_val); i++) { - ret = set_config_val[i](mdev_link); - if (ret < 0) - return ret; - } - - if (tmp) - ret = most_add_link(mdev_link->device, mdev_link->channel, - mdev_link->comp, mdev_link->name, - mdev_link->comp_params); - else - ret = most_remove_link(mdev_link->device, mdev_link->channel, - mdev_link->comp); - if (ret) + if (!tmp) + return most_remove_link(mdev_link->device, mdev_link->channel, + mdev_link->comp); + ret = set_config_and_add_link(mdev_link); + if (ret && ret != -ENODEV) return ret; + list_add_tail(&mdev_link->list, &mdev_link_list); mdev_link->create_link = tmp; return count; } @@ -594,6 +605,22 @@ int most_register_configfs_subsys(struct core_component *c) } EXPORT_SYMBOL_GPL(most_register_configfs_subsys); +void most_interface_register_notify(const char *mdev) +{ + bool register_snd_card = false; + struct mdev_link *mdev_link; + + list_for_each_entry(mdev_link, &mdev_link_list, list) { + if (!strcmp(mdev_link->device, mdev)) { + set_config_and_add_link(mdev_link); + if (!strcmp(mdev_link->comp, "sound")) + register_snd_card = true; + } + } + if (register_snd_card) + most_cfg_complete("sound"); +} + void most_deregister_configfs_subsys(struct core_component *c) { if (!strcmp(c->name, "cdev")) @@ -622,6 +649,7 @@ int __init configfs_init(void) mutex_init(&most_sound_subsys.subsys.su_mutex); INIT_LIST_HEAD(&most_sound_subsys.soundcard_list); + INIT_LIST_HEAD(&mdev_link_list); return 0; } |