snd_hda_mixe...p_switch_put(9)

💅 snd_hda_mixer_amp_switch_put(9) — the Kernel API Manual moment

okay so bestie, welcome to the glow-up guide for snd_hda_mixer_amp_switch_put. This one lives in the Kernel API Manual and it's giving "quietly essential little put callback" energy, which honestly? iconic. no cap. 🎀

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✨ NAME ✨

snd_hda_mixer_amp_switch_put — the put callback for a standard AMP mixer switch. that's it, that's the whole vibe. 🦋

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🌸 SYNOPSIS 🌸

int snd_hda_mixer_amp_switch_put (struct snd_kcontrol *kcontrol , struct snd_ctl_elem_value *ucontrol );

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🫶 ARGUMENTS 🫶

• kcontrol — the ctl element, aka the whole control we're working with. main character. 👑
• ucontrol — a pointer to get/store the data. it's literally the go-between for your data, lowkey doing the most. 💖

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💅 DESCRIPTION 💅

so here's the tea: the control element is supposed to have the private_value field set up via HDA_COMPOSE_AMP_VAL*() or related macros. that's the setup — if you skip it, don't come crying to me. periodt. 🌈

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🔥 SEE ALSO 🔥

Kernel file ./sound/hda/common/codec.c and honestly the whole friend group:

• 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(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_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)

like, that's a lot of besties. iykyk. 💜

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and that's the whole page, bestie — go forth and set your private_value. 🧚

sign-off szn: this lil masterpiece comes from ./sound/hda/common, dated October 2026, and it's filed under snd_hda_mixe...p_switch_put(9) in case you need to find it again. mwah. 💖🌸✨