f6b50ef14e
The IPUv3 can read 8-bit alpha values from a separate plane buffer using a companion IDMAC channel driven by the Alpha Transparency Controller (ATC) for the graphics channels. The conditional read mechanism allows to reduce memory bandwidth by skipping reads of color data for completely transparent bursts. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
#ifndef __IPUV3_PLANE_H__
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#define __IPUV3_PLANE_H__
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#include <drm/drm_crtc.h> /* drm_plane */
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struct drm_plane;
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struct drm_device;
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struct ipu_soc;
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struct drm_crtc;
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struct drm_framebuffer;
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struct ipuv3_channel;
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struct dmfc_channel;
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struct ipu_dp;
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struct ipu_plane {
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struct drm_plane base;
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struct ipu_soc *ipu;
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struct ipuv3_channel *ipu_ch;
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struct ipuv3_channel *alpha_ch;
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struct dmfc_channel *dmfc;
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struct ipu_dp *dp;
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int dma;
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int dp_flow;
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bool disabling;
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};
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struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
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int dma, int dp, unsigned int possible_crtcs,
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enum drm_plane_type type);
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/* Init IDMAC, DMFC, DP */
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int ipu_plane_mode_set(struct ipu_plane *plane, struct drm_crtc *crtc,
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struct drm_display_mode *mode,
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struct drm_framebuffer *fb, int crtc_x, int crtc_y,
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unsigned int crtc_w, unsigned int crtc_h,
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uint32_t src_x, uint32_t src_y, uint32_t src_w,
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uint32_t src_h, bool interlaced);
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int ipu_plane_get_resources(struct ipu_plane *plane);
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void ipu_plane_put_resources(struct ipu_plane *plane);
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int ipu_plane_irq(struct ipu_plane *plane);
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void ipu_plane_disable(struct ipu_plane *ipu_plane, bool disable_dp_channel);
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void ipu_plane_disable_deferred(struct drm_plane *plane);
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#endif
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