cs_dsp_power_down(9)

💅 cs_dsp_power_down(9) — your Kernel API Manual bestie 🫶

okay so this page is straight out of the Kernel API Manual, and it’s all about putting the DSP to sleep-sleep. no cap, it’s short but important, so let’s get into it ✨

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🎀 NAME 🎀

cs_dsp_power_down — Powers-down the DSP 💤

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✨ SYNOPSIS ✨

void cs_dsp_power_down (struct cs_dsp *dsp );

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🦋 ARGUMENTS 🦋

• dsp — pointer to DSP structure, literally the DSP’s little handle 🫶

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🌸 DESCRIPTION 🌸

okay bestie, listen: cs_dsp_stop must have been called before this function. that’s the vibe check, and you cannot skip it 🙈

the core will be fully powered down, and so the memory will not be retained. like… it’s gone gone. not hibernating, not chilling in the background — powered down, memory not kept 💀

⚠️ reminder: cs_dsp_stop before this, periodt. and don’t expect the memory to stick around after, because it will not.

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👑 SEE ALSO 👑

• Kernel file ./drivers/firmware/cirrus/cs_dsp.c
• cs_dsp_mem_region_name(9)
• cs_dsp_init_debugfs(9)
• cs_dsp_cleanup_debugfs(9)
• cs_dsp_coeff_write_acked_control(9)
• cs_dsp_coeff_write_ctrl(9)
• cs_dsp_coeff_lock_and_write_ctrl(9)
• cs_dsp_coeff_read_ctrl(9)
• cs_dsp_coeff_lock_and_read_ctrl(9)
• cs_dsp_hibernate(9)
• cs_dsp_get_ctl(9)
• cs_dsp_find_alg_region(9)
• cs_dsp_adsp1_init(9)
• cs_dsp_adsp1_power_up(9)
• cs_dsp_adsp1_power_down(9)
• cs_dsp_set_dspclk(9)
• cs_dsp_power_up(9)
• cs_dsp_run(9)
• cs_dsp_stop(9)
• cs_dsp_adsp2_init(9)
• cs_dsp_halo_init(9)
• cs_dsp_remove(9)
• cs_dsp_read_raw_data_block(9)
• cs_dsp_read_data_word(9)
• cs_dsp_write_data_word(9)
• cs_dsp_remove_padding(9)
• cs_dsp_adsp2_bus_error(9)
• cs_dsp_halo_bus_error(9)
• cs_dsp_halo_wdt_expire(9)
• cs_dsp_chunk_write(9)
• cs_dsp_chunk_flush(9)
• cs_dsp_chunk_read(9)
• cs_dsp_wseq_init(9)
• cs_dsp_wseq_write(9)
• cs_dsp_wseq_multi_write(9)

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mwah 💋 sign-off time: this cutie comes from the ./drivers/firmware/cirrus source/version energy, dated October 2026, and the page is cs_dsp_power_down(9). slay, go power down that DSP responsibly 🧚💜