evergreen_pm_prepare(9)

💅 evergreen_pm_prepare — kernel API manual energy ✨

okay so bestie, we're in the Kernel API Manual today and the main character is literally evergreen_pm_prepare. say hi 🫶

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✨ NAME ✨

evergreen_pm_prepare — the pre-power state change callback. that's it, that's the vibe 💖

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🌸 SYNOPSIS 🌸

void evergreen_pm_prepare (struct radeon_device *rdev );

no cap, that's the whole signature. void in, void out, very demure, very mindful 💅

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🎀 ARGUMENTS 🎀

• rdev — a radeon_device pointer. yeah it's just a pointer to the radeon device, she's the plug 🔌

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🦋 DESCRIPTION 🦋

okay so this is the thing that prepares for a power state change, and the important little detail is: evergreen+ only. so if you're on older silicon, this is not your girl 🙈

think of it as the getting-ready montage before the actual glow-up happens 🌈

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👑 SEE ALSO 👑

the whole friend group, fr fr — go say hi:

• Kernel file ./drivers/gpu/drm/radeon/evergreen.c 📁
• evergreen_get_allowed_info_register(9)
• dce4_wait_for_vblank(9)
• evergreen_page_flip(9)
• evergreen_page_flip_pending(9)
• sumo_pm_init_profile(9)
• btc_pm_init_profile(9)
• evergreen_pm_misc(9)
• evergreen_pm_finish(9)
• evergreen_hpd_sense(9)
• evergreen_hpd_set_polarity(9)
• evergreen_hpd_init(9)
• evergreen_hpd_fini(9)
• evergreen_bandwidth_update(9)
• evergreen_mc_wait_for_idle(9)
• evergreen_gfx_is_lockup(9)

like, the entire hpd squad showed up. iconic behavior honestly 💀✨

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aaaand that's the page!! sourced straight from ./drivers/gpu/drm/radeon, dated October 2026 — mwah, sending you off with a kiss, go read the manpage bestie 🍓💜🧚