pci_is_display(9)

💅 pci_is_display(9) — Kernel API Manual, bestie edition 🎀

okay so this one's a lil function from the <pink>Kernel API Manual</pink>, and honestly? it's giving "quick vibe check for your graphics card." let's get into it 🫶

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✨ NAME ✨

pci_is_display — checks if the PCI device is a display controller 💖

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🌸 SYNOPSIS 🌸

bool pci_is_display (struct pci_dev *pdev );

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🦋 ARGUMENTS 🦋

• pdev — the PCI device, that's it, that's the whole argument 🎀

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💅 DESCRIPTION 💅

so basically this function figures out whether the PCI device you handed it corresponds to a display controller. display controllers are typically used for graphical output, and they get identified based on their class code — that's the whole detective shtick, no cap 🔍✨

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⭐ RETURN ⭐

• true if the PCI device is a display controller 💖
• false otherwise 🙈

literally the whole plot, one or the other, periodt 👑

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🌈 SEE ALSO 🌈

the <purple>Kernel file</purple> ./include/linux/pci.h, plus this whole friend group of related APIs — go say hi, they're all iconic 👑:

• enum pci_interrupt_pin(9)
• pci_channel_state_t(9)
• pci_is_bridge(9)
• pci_is_vga(9)
• struct pci_driver(9)
• PCI_DEVICE(9)
• PCI_DEVICE_DRIVER_OVERRIDE(9)
• PCI_DRIVER_OVERRIDE_DEVICE_VFIO(9)
• PCI_DEVICE_SUB(9)
• PCI_DEVICE_CLASS(9)
• PCI_VDEVICE(9)
• PCI_VDEVICE_SUB(9)
• PCI_DEVICE_DATA(9)
• pcie_capability_clear_and_set_word(9)
• pci_bus_for_each_resource(9)
• module_pci_driver(9)
• builtin_pci_driver(9)
• pci_irq_type(9)
• pci_irqd_intx_xlate(9)
• pci_resource_is_io(9)
• pci_resource_is_mem(9)
• pci_pcie_cap(9)
• pci_is_pcie(9)
• pcie_caps_reg(9)
• pci_pcie_type(9)
• pcie_find_root_port(9)
• pci_vpd_alloc(9)
• pci_vpd_find_id_string(9)
• pci_vpd_find_ro_info_keyword(9)
• pci_vpd_check_csum(9)
• pci_ari_enabled(9)
• pci_is_thunderbolt_attached(9)

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💀 lowkey important: this only tells you what the device claims to be via its class code — it's not out here plugging in a monitor and checking for vibes, iykyk.

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and that's the whole page, bestie 🎀 shipped from <purple>./include/linux</purple> back in <yellow>October 2026</yellow> — slay, historic, we stan an evergreen kernel doc 💜✨