STRUCT RCAR_ISP_CORE(9)

💖 struct rcar_isp_core(9) 💖

okay so bestie, welcome to the Kernel API Manual — this is the struct rcar_isp_core(9) page and it's literally the main character of the Renesas ISP core world, no cap 🎀

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✨ NAME ✨

struct rcar_isp_core — the ISP Core, periodt 🦋

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🌸 SYNOPSIS 🌸

like, here's the whole vibe, character for character:

struct rcar_isp_core {
    struct device *dev;
    u32 rppaddr;
    struct clk *clk;
    struct reset_control *rstc;
    struct reset_control *csrstc;
    void __iomem *base;
    void __iomem *csbase;
    struct v4l2_subdev subdev;
    struct media_pad pads[RISP_CORE_NUM_PADS];
    struct v4l2_device v4l2_dev;
    struct rppx1 *rpp;
    struct mutex io_lock;
    struct rcar_isp_core_io io[RISP_CORE_NUM_PADS];
    spinlock_t lock;
    struct rcar_isp_vspx vspx;
    struct list_head risp_jobs;
    unsigned int sequence;
    bool streaming;
 };

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👑 Members 👑

it's giving tour of every single field, so let's go 🔥

• dev — the (OF) device, the whole reason we're here fr fr
• rppaddr — the hardware address of the RPP ISP, straight from OF 💅
• clk — the clock for the ISP CORE, keeps the heartbeat going ⭐
• rstc — the reset for the ISP Core, one (1) little reset icon
• csrstc — the reset for the ISP Channel Selector, its own separate reset bestie
• base — MMIO base of the ISP CORE, where the CORE lives
• csbase — MMIO base of the ISP CS, where the CS lives 🫶
• subdev — the V4L2 subdevice that represents the ISP CORE, iconic
• pads — the media pad for the subdev 🎀
• v4l2_dev — the V4L2 device, hi queen
• rpp — a handle to the RPP ISP that's connected to the ISP CORE 🔗
• io_lock — this one protects io[*].streaming and io[*].buffers, do not skip her
• io — an array of IO ports to the ISP CORE, one per pad, we love an array
• lock — protects vspx, risp_jobs, sequence and streaming — she's a spinlock and she's busy 💀
• vspx — a handle to the resources used by VSPX that's connected to the ISP CORE
• risp_jobs — the queue of VSPX transfer jobs, it's giving to-do list 🌈
• sequence — the V4L2 buffers sequence number, counting up like your unread messages
• streaming — tracks whether the device is streaming, yes/no, on/off, the vibe check of the whole struct ✨

ngl bestie, note how io_lock and lock guard different things — don't go swapping them, that's not the move 🙈

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/media/platform/renesas/rcar-isp/risp-core.h
• struct risp_buffer(9)
• struct rcar_isp_core_io(9)
• struct rcar_isp_job(9)
• struct rcar_isp_vspx(9)

go read those next, iykyk 💜

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and that's the page!! mwah 💋 this one came from ./drivers/media/platform/renes... and it's stamped October 2026 — so like, future-coded of it. slay, go touch some registers 🧚💖