__snd_hda_add_vmaster(9)

💖 NAME 💖

__snd_hda_add_vmaster — create a virtual master control and add followers. That’s literally the whole assignment, bestie. 🫶

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✨ SYNOPSIS ✨

Okay so here’s the exact signature, no cap — copy it like it’s your fave playlist link:

       int __snd_hda_add_vmaster (struct hda_codec *codec , char *name ,
       unsigned int *tlv , const char * const *followers , const char *suffix ,
       bool init_follower_vol , unsigned int access , struct snd_kcontrol
       **ctl_ret );

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🎀 ARGUMENTS 🎀

The arguments are giving very much “who’s who,” and every single one matters, fr fr:

• codec — the HD-audio codec. ✨
• name — the vmaster control name.
• tlv — TLV data, and it’s optional.
• followers — follower control names, also optional.
• suffix — a suffix string to each follower name, optional too.
• init_follower_vol — initialize followers to unmute/0dB.
• access — kcontrol access rights.
• ctl_ret — store the vmaster kcontrol in return.

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🦋 DESCRIPTION 🦋

Bestie, the glow-up here is real: you create a virtual master control with the given name. The TLV data must be either NULL or a valid data — that’s the rule, okay? 💅

followers is a NULL-terminated array of strings, each of which is a follower control name. All controls with these names are assigned to the new virtual master control. It’s giving “everyone gets a seat at the master table” 😭👑

Return situation: this function returns zero if successful or a negative error code. So 0 = slay, negative = not slay. 🔥

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🌈 SEE ALSO 🌈

Lowkey the SEE ALSO section is a whole group chat — here’s the kernel file and every single reference, exactly:

       Kernel file ./sound/hda/common/codec.c snd_hda_sequence_write(9),
       snd_hda_get_conn_list(9), snd_hda_get_connections(9),
       snd_hda_override_conn_list(9), snd_hda_get_conn_index(9),
       snd_hda_get_num_devices(9), snd_hda_get_devices(9),
       snd_hda_get_dev_select(9), snd_hda_set_dev_select(9),
       snd_hda_codec_set_pincfg(9), snd_hda_codec_get_pincfg(9),
       snd_hda_codec_set_pin_target(9), snd_hda_codec_get_pin_target(9),
       snd_hda_shutup_pins(9), snd_hda_codec_cleanup_for_unbind(9),
       snd_hda_codec_register(9), snd_hda_codec_unregister(9),
       snd_hda_codec_device_init(9), snd_hda_codec_new(9),
       snd_hda_codec_update_widgets(9), snd_hda_codec_setup_stream(9),
       __snd_hda_codec_cleanup_stream(9), query_amp_caps(9),
       snd_hda_check_amp_caps(9), snd_hda_override_amp_caps(9),
       snd_hda_codec_amp_update(9), snd_hda_codec_amp_stereo(9),
       snd_hda_codec_amp_init(9), snd_hda_codec_amp_init_stereo(9),
       snd_hda_mixer_amp_volume_info(9), snd_hda_mixer_amp_volume_get(9),
       snd_hda_mixer_amp_volume_put(9), snd_hda_mixer_amp_tlv(9),
       snd_hda_set_vmaster_tlv(9), snd_hda_find_mixer_ctl(9),
       snd_hda_ctl_add(9), snd_hda_ctls_clear(9), snd_hda_lock_devices(9),
       snd_hda_unlock_devices(9), snd_hda_codec_reset(9),
       snd_hda_add_vmaster_hook(9), snd_hda_sync_vmaster_hook(9),
       snd_hda_mixer_amp_switch_info(9), snd_hda_mixer_amp_switch_get(9),
       snd_hda_mixer_amp_switch_put(9), snd_hda_create_dig_out_ctls(9),
       snd_hda_spdif_out_of_nid(9), snd_hda_spdif_ctls_unassign(9),
       snd_hda_spdif_ctls_assign(9), snd_hda_create_spdif_share_sw(9),
       snd_hda_create_spdif_in_ctls(9), snd_hda_codec_set_power_to_all(9),
       snd_hda_codec_eapd_power_filter(9), snd_hda_codec_prepare(9),
       snd_hda_codec_cleanup(9), snd_hda_add_new_ctls(9),
       snd_hda_codec_set_power_save(9), snd_hda_set_power_save(9),
       snd_hda_check_amp_list_power(9), snd_hda_input_mux_info(9),
       snd_hda_input_mux_put(9), snd_hda_enum_helper_info(9),
       snd_hda_multi_out_dig_open(9), snd_hda_multi_out_dig_prepare(9),
       snd_hda_multi_out_dig_cleanup(9), snd_hda_multi_out_dig_close(9),
       snd_hda_multi_out_analog_open(9), snd_hda_multi_out_analog_prepare(9),
       snd_hda_multi_out_analog_cleanup(9), snd_hda_get_default_vref(9),
       snd_hda_correct_pin_ctl(9), _snd_hda_set_pin_ctl(9),
       snd_hda_add_imux_item(9), snd_hda_bus_reset_codecs(9),
       snd_hda_codec_set_gpio(9), snd_print_pcm_bits(9)

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That’s it, bestie! 💖 Source/version: ./sound/hda/common. Date: October 2026. Go be iconic with your virtual master controls. 🎀✨