r600_get_all...nfo_register(9)

💅 r600_get_allowed_info_register(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — we're doing a little function today, and honestly? she's short, she's sweet, she's giving "small but mighty."

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🌸 NAME 🌸

r600_get_allowed_info_register — the girl who fetches the register for the info ioctl 🎀

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✨ SYNOPSIS ✨

int r600_get_allowed_info_register (struct radeon_device *rdev , u32 reg
, u32 *val );

like literally that's the whole signature. three params, one int, no drama 🫶

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🦋 ARGUMENTS 🦋

• rdev — your radeon_device pointer, the main character tbh 👑
• reg — the register offset in bytes, not vibes, actual bytes 💅
• val — where the register value ends up living

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💖 DESCRIPTION 💖

she returns 0 for success, or -EINVAL if the register is invalid 😭 that's it. that's the whole personality. lowkey iconic for how unbothered she is.

fr fr don't pass her a bad register and expect a cute answer — -EINVAL is the answer. 💀

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🧚 SEE ALSO 🧚

peep the kernel file ./drivers/gpu/drm/radeon/r600.c if you wanna snoop, and then these besties right here:

• r600_get_xclk(9)
• r600_vram_gtt_location(9)
• r600_gfx_is_lockup(9)
• r600_semaphore_ring_emit(9)
• r600_copy_cpdma(9)
• r600_mmio_hdp_flush(9)
• r600_get_gpu_clock_counter(9)

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🌈 and that's the tea!! this one's hanging out in ./drivers/gpu/drm/radeon, dated October 2026, and she's forever filed under r600_get_allowed_info_register(9) — go read the whole family, ily, bye bestie 💜🎀