STRUCT RCAR_DU_CRTC(9)

💖 struct rcar_du_crtc(9) 💖

okay bestie, welcome to the Kernel API Manual entry for struct rcar_du_crtc — and yes, we're doing this, because this little icon is literally the CRTC, representing a DU superposition processor. main character energy fr fr ✨

✨ NAME ✨

struct rcar_du_crtc — the CRTC, representing a DU superposition processor 👑

🦋 SYNOPSIS 🦋

struct rcar_du_crtc {
    struct drm_crtc crtc;
    struct rcar_du_device *dev;
    struct clk *clock;
    struct clk *extclock;
    unsigned int mmio_offset;
    unsigned int index;
    bool initialized;
    u32 dsysr;
    bool vblank_enable;
    struct drm_pending_vblank_event *event;
    wait_queue_head_t flip_wait;
    spinlock_t vblank_lock;
    wait_queue_head_t vblank_wait;
    unsigned int vblank_count;
    struct rcar_du_group *group;
    struct rcar_du_cmm *cmm;
    struct rcar_du_vsp *vsp;
    unsigned int vsp_pipe;
    const char *const *sources;
    unsigned int sources_count;
    struct drm_writeback_connector writeback;
 };

like, look at her. a whole struct. a whole vibe. 💅

🌸 Members 🌸

okay so here's the member-by-member tour, no skipping, we're doing all of them 🫶

• crtc — the base DRM CRTC. the foundation, the moment, the blueprint 💖
• dev — the DU device. her home base 🏠
• clock — the CRTC functional clock ⏰
• extclock — external pixel dot clock (optional). she's optional but iconic ✨
• mmio_offset — offset of the CRTC registers in the DU MMIO block 📍
• index — CRTC hardware index 🔢
• initialized — whether the CRTC has been initialized and clocks enabled. the "have you eaten yet" of booleans 🍓
• dsysr — cached value of the DSYSR register. cached, like receipts 🧾
• vblank_enable — whether vblank events are enabled on this CRTC 🌈
• event — event to post when the pending page flip completes 🎀
• flip_wait — wait queue used to signal page flip completion ⏳
• vblank_lock — protects vblank_wait and vblank_count 🔒
• vblank_wait — wait queue used to signal vertical blanking 🦋
• vblank_count — number of vertical blanking interrupts to wait for 🔢
• group — CRTC group this CRTC belongs to 👯
• cmm — CMM associated with this CRTC 💫
• vsp — VSP feeding video to this CRTC 🎥
• vsp_pipe — index of the VSP pipeline feeding video to this CRTC 🔧
• writeback — the writeback connector 🔁

ngl bestie, that's a lot of members, but every single one of them is doing her job so we respect her fr fr 💜

🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/renesas/rcar-du/rcar_du_crtc.h — go read the header, it's giving source of truth 📖
• struct rcar_du_crtc_state(9) — her sister struct, equally slay 👑

and that's the whole page, periodt. this was pulled from ./drivers/gpu/drm/renesas/rcar-du, dated October 2026, under the struct rcar_du_crtc(9) title — so if you cite it, cite it right, iykyk 😭💖🎀