vsp1_isp_alloc_buffer(9)

📦 version 7.3.1, in nixpkgs unstable

💅 vsp1_isp_alloc_buffer(9)

okay so bestie, welcome to the Kernel API Manual ✨ — specifically the page for vsp1_isp_alloc_buffer(9), and no cap, this one's a little baddie that just wants to hand you some memory. Let's get into it 🎀

🌸 NAME 🌸

vsp1_isp_alloc_buffer — allocate a buffer in the VSPX address space 🫶

✨ SYNOPSIS ✨

int vsp1_isp_alloc_buffer (struct device *dev , size_t size , struct
vsp1_isp_buffer_desc *buffer_desc );

like, that's the whole vibe. three args, one int coming back at you 💖

🦋 ARGUMENTS 🦋

  • dev — the struct device for VSP1. your main character struct, fr fr 👑
  • size — the size of the buffer that the VSPX is gonna allocate for you 🍓
  • buffer_desc — the buffer descriptor 💅 and heads up, this one gets filled in for you: it'll come back holding the buffer's CPU-mapped address, the bus address, and the size of the allocated buffer. so it's giving "output parameter" energy, iykyk ✨

🌈 DESCRIPTION 🌈

so what does it actually do? it allocates a buffer that the VSPX is gonna access later, periodt 💀

⚠️ real talk though: any buffer you allocate with vsp1_isp_alloc_buffer shall be released with a call to vsp1_isp_free_buffer. don't just leave it hanging, bestie, that's not the move 😭

and for the lore: this function is what the ISP driver uses to allocate memory for the ConfigDMA parameters buffer. that's the whole reason it exists 🧚

⭐ RETURN ⭐

  • 0 on success 🌸
  • a negative error code on failure 💀 (the classic)

💜 SEE ALSO 💜

kernel file: ./drivers/media/platform/renesas/vsp1/vsp1_vspx.c

and the whole friend group 👯‍♀️:

🫶 oh and one more thing — remember vsp1_isp_free_buffer(9) up there? yeah. that's your cleanup bestie. go say hi to her after you're done 💖

and that's the page!! footer tea for the record keepers: this one lives at ./drivers/media/platform/renes... (the path gets cut off in the footer, tragic, I know 😭), dated October 2026, and it's page vsp1_isp_alloc_buffer(9) of the Kernel API Manual. slay, go allocate responsibly 💅✨🔥

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