cik_irq_suspend(9)

💅 cik_irq_suspend(9) — Kernel API Manual, bestie edition

okay so picture this: we're deep in the Kernel API Manual, chapter cik_irq_suspend(9). It's a whole mood, it's a whole vibe, and honestly? It's giving "graphics driver goes night-night" ✨

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🌸 NAME 🌸

cik_irq_suspend — disable interrupts for suspend 🫶

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⭐ SYNOPSIS ⭐

void cik_irq_suspend (struct radeon_device *rdev );

like, that's it. that's the whole function signature. no cap. 💅

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🎀 ARGUMENTS 🎀

• rdev — a radeon_device pointer. that's your whole GPU device struct, your main character, the one we're putting to sleep bestie 💤

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✨ DESCRIPTION ✨

Lowkey iconic behaviour, ngl: this one disables interrupts and stops the RLC (CIK). It's used for suspend — you know, when the system takes a little nap 😴

So yeah. Interrupts: off. RLC: stopped. Suspend: handled. Periodt. 🔥

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🦋 SEE ALSO 🦋

Kernel file ./drivers/gpu/drm/radeon/cik.c 🗂️ — go read the source, it's right there, iykyk

and like, literally the entire friend group, no one left out 👑:

• cik_get_allowed_info_register(9), cik_get_xclk(9), cik_mm_rdoorbell(9), cik_mm_wdoorbell(9)
• cik_srbm_select(9), ci_mc_load_microcode(9), cik_init_microcode(9), cik_tiling_mode_table_init(9)
• cik_select_se_sh(9), cik_create_bitmask(9), cik_get_rb_disabled(9), cik_setup_rb(9)
• cik_gpu_init(9), cik_scratch_init(9), cik_ring_test(9), cik_hdp_flush_cp_ring_emit(9)
• cik_fence_gfx_ring_emit(9), cik_fence_compute_ring_emit(9), cik_semaphore_ring_emit(9), cik_copy_cpdma(9)
• cik_ring_ib_execute(9), cik_ib_test(9), cik_cp_gfx_enable(9), cik_cp_gfx_load_microcode(9)
• cik_cp_gfx_start(9), cik_cp_gfx_fini(9), cik_cp_gfx_resume(9), cik_cp_compute_enable(9)
• cik_cp_compute_load_microcode(9), cik_cp_compute_start(9), cik_cp_compute_fini(9), cik_cp_compute_resume(9)
• cik_gpu_check_soft_reset(9), cik_gpu_soft_reset(9), cik_asic_reset(9), cik_gfx_is_lockup(9)
• cik_mc_program(9), cik_mc_init(9), cik_pcie_gart_tlb_flush(9), cik_pcie_gart_enable(9)
• cik_pcie_gart_disable(9), cik_pcie_gart_fini(9), cik_ib_parse(9), cik_vm_init(9)
• cik_vm_fini(9), cik_vm_decode_fault(9), cik_rlc_stop(9), cik_rlc_start(9)
• cik_rlc_resume(9), cik_enable_interrupts(9), cik_disable_interrupts(9), cik_disable_interrupt_state(9)
• cik_irq_init(9), cik_irq_set(9), cik_irq_ack(9), cik_irq_disable(9)
• cik_irq_fini(9), cik_get_ih_wptr(9), cik_irq_process(9), cik_startup(9)
• cik_resume(9), cik_suspend(9), cik_init(9), cik_fini(9)
• dce8_line_buffer_adjust(9), cik_get_number_of_dram_channels(9), dce8_dram_bandwidth(9), dce8_dram_bandwidth_for_display(9)
• dce8_data_return_bandwidth(9), dce8_dmif_request_bandwidth(9), dce8_available_bandwidth(9), dce8_average_bandwidth(9)
• dce8_latency_watermark(9), dce8_average_bandwidth_vs_dram_bandwidth_for_display(9), dce8_average_bandwidth_vs_available_bandwidth(9)
• dce8_check_latency_hiding(9), dce8_program_watermarks(9), dce8_bandwidth_update(9), cik_get_gpu_clock_counter(9)

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okay that's the whole page bestie, go touch some grass 🌈💜

💖 signed, sealed, delivered: this came out of ./drivers/gpu/drm/radeon, dated October 2026, and it's still cik_irq_suspend(9) at the end of the day. slay. 🎀