STRUCT ATMEL_HLCDC_PLANE_STATE(9)

💅 struct atmel_hlcdc_plane_state(9) — Kernel API Manual, but make it cute 💅

okay so bestie, welcome to the Kernel API Manual ✨ we're talking about the one and only struct atmel_hlcdc_plane_state — literally the Atmel HLCDC Plane state structure, no cap 🎀

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🌸 NAME 🌸

struct atmel_hlcdc_plane_state — the Atmel HLCDC Plane state structure. that's it, that's the vibe 💖

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✨ SYNOPSIS ✨

here's the whole glow-up, every field exactly as it lives, don't touch a single character:

struct atmel_hlcdc_plane_state {
    struct drm_plane_state base;
    int crtc_x;
    int crtc_y;
    unsigned int crtc_w;
    unsigned int crtc_h;
    uint32_t src_x;
    uint32_t src_y;
    uint32_t src_w;
    uint32_t src_h;
    int disc_x;
    int disc_y;
    int disc_w;
    int disc_h;
    int ahb_id;
    int bpp[ATMEL_HLCDC_LAYER_MAX_PLANES];
    unsigned int offsets[ATMEL_HLCDC_LAYER_MAX_PLANES];
    int xstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
    int pstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
    int nplanes;
    struct atmel_hlcdc_dma_channel_dscr *dscrs[ATMEL_HLCDC_LAYER_MAX_PLANES];
 };

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🦋 Members 🦋

time for the member-by-member vibe check, and yes we're doing all of them, iykyk 💅

• base — the DRM plane state, the main character it's built on top of 👑
• crtc_x — x position of the plane relative to the CRTC, lowkey where it sits horizontally
• crtc_y — y position of the plane relative to the CRTC, aka the vertical situation
• crtc_w — visible width of the plane, the width u actually see 🌸
• crtc_h — visible height of the plane, tall queen energy
• src_x — x buffer position, where we're reading from bb
• src_y — y buffer position, same but vertical ✨
• src_w — buffer width, the whole width of the source
• src_h — buffer height, the whole height of the source
• disc_x — x discard position, literally throwing x away 💀
• disc_y — y discard position, bye bye y
• disc_w — discard width, how much width we're discarding
• disc_h — discard height, how much height we're discarding
• ahb_id — AHB identification number, its little ID card 🎀
• bpp — bytes per pixel, deduced from pixel_format (it's giving detective work 🔍)
• offsets — offsets to apply to the GEM buffers, gotta shift 'em into place
• xstride — value to add to the pixel pointer between each line, horizontal stride bestie
• pstride — value to add to the pixel pointer between each pixel, pixel-to-pixel strut 💅
• nplanes — number of planes, deduced from pixel_format (again with the deduction, obsessed)
• dscrs — DMA descriptors, the whole struct atmel_hlcdc_dma_channel_dscr * situation, slay

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🫶 SEE ALSO 🫶

go read the kernel file, it's literally right here:

./drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c

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and that's the whole page, bestie 🌈 no notes, ate and left no crumbs 🍓

fr fr this came out of ./drivers/gpu/drm/atmel-hlcdc in October 2026, and the page itself is struct atmel..._plane_state(9) — periodt 💜🧚