STRUCT RVIN_GROUP_ROUTE(9)

💅 struct rvin_group_route(9) — the Kernel API Manual, but make it cute 🎀

okay bestie, so this is a page out of the Kernel API Manual — yes, the (9) section, the kernel-internals one — and it's literally all about struct rvin_group_route, which describes a route from a channel of a CSI-2 receiver to a VIN. that's the whole NAME energy. slay. ✨

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🌸 SYNOPSIS 🌸

like, here's the shape of it, exactly as it is, no cap:

struct rvin_group_route {
    unsigned int master;
    enum rvin_csi_id csi;
    unsigned int chsel;
 };

three fields. that's it. that's the whole struct. iconic minimalism tbh. 💅

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🦋 Members 🦋

• master — the VIN group master ID. like, which VIN group is the main character here. 👑
• csi — the CSI-2 receiver ID. which receiver we're talking about. 📡
• chsel — the CHSEL register values that connect the VIN group to CSI-2. yes, plural values, that's what it says, don't come for me. 🎀

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💖 Description 💖

NOTE: 🫶 so each R-Car CSI-2 receiver has four output channels facing the VIN devices, and each channel can carry one CSI-2 Virtual Channel (VC). 🌀 and here's the tea: there is no correlation between the channel number and the CSI-2 VC. none. zero. they're not linked like that. 😭 it's up to the CSI-2 receiver driver to configure which VC is output on which channel — that's the driver's whole job, its main character moment. the VIN devices only care about output channels. they literally do not perceive the VC. they're just out here vibing with channels. 💀

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🔥 SEE ALSO 🔥

go look at the kernel file ./drivers/media/platform/renesas/rcar-vin/rcar-vin.h and also these absolute legends:

• struct rvin_video_format(9)
• struct rvin_parallel_entity(9)
• struct rvin_info(9)
• struct rvin_dev(9)
• struct rvin_group(9)

iykyk. go read them. obsessed. 📚✨

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okay that's the page!! and for the little sign-off moment: this one's sourced from ./drivers/media/platform/renes... (yes it's truncated like that in the footer, don't @ me) and it's dated October 2026, and it's still out here being struct rvin_group_route(9) to the very end. bye bestie, go route some channels 💜🧚‍♀️