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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a7db690c06
VI planes support coarse scaling which helps to overcome VI scaler limitations. While exact working of coarse scaling isn't known, it seems that it just skips programmed amount of rows and columns. This is especially useful for downscaling very big planes (4K down to 1080p). Horizontal coarse scaling is currently used to fit one line to VI scaler buffer. Vertical coarse scaling is used to assure that VI scaler is actually capable of processing framebuffer in one frame time. Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190228200329.11128-4-jernej.skrabec@siol.net
66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/*
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* Copyright (C) Jernej Skrabec <jernej.skrabec@siol.net>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*/
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#ifndef _SUN8I_VI_LAYER_H_
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#define _SUN8I_VI_LAYER_H_
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#include <drm/drm_plane.h>
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#define SUN8I_MIXER_CHAN_VI_LAYER_ATTR(base, layer) \
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((base) + 0x30 * (layer) + 0x0)
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#define SUN8I_MIXER_CHAN_VI_LAYER_SIZE(base, layer) \
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((base) + 0x30 * (layer) + 0x4)
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#define SUN8I_MIXER_CHAN_VI_LAYER_COORD(base, layer) \
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((base) + 0x30 * (layer) + 0x8)
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#define SUN8I_MIXER_CHAN_VI_LAYER_PITCH(base, layer, plane) \
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((base) + 0x30 * (layer) + 0xc + 4 * (plane))
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#define SUN8I_MIXER_CHAN_VI_LAYER_TOP_LADDR(base, layer, plane) \
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((base) + 0x30 * (layer) + 0x18 + 4 * (plane))
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#define SUN8I_MIXER_CHAN_VI_OVL_SIZE(base) \
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((base) + 0xe8)
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#define SUN8I_MIXER_CHAN_VI_HDS_Y(base) \
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((base) + 0xf0)
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#define SUN8I_MIXER_CHAN_VI_HDS_UV(base) \
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((base) + 0xf4)
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#define SUN8I_MIXER_CHAN_VI_VDS_Y(base) \
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((base) + 0xf8)
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#define SUN8I_MIXER_CHAN_VI_VDS_UV(base) \
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((base) + 0xfc)
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#define SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN BIT(0)
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/* RGB mode should be set for RGB formats and cleared for YCbCr */
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#define SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE BIT(15)
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#define SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_OFFSET 8
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#define SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_MASK GENMASK(12, 8)
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#define SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA_MASK GENMASK(31, 24)
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#define SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA(x) ((x) << 24)
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#define SUN8I_MIXER_CHAN_VI_DS_N(x) ((x) << 16)
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#define SUN8I_MIXER_CHAN_VI_DS_M(x) ((x) << 0)
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struct sun8i_mixer;
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struct sun8i_vi_layer {
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struct drm_plane plane;
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struct sun8i_mixer *mixer;
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int channel;
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int overlay;
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};
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static inline struct sun8i_vi_layer *
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plane_to_sun8i_vi_layer(struct drm_plane *plane)
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{
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return container_of(plane, struct sun8i_vi_layer, plane);
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}
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struct sun8i_vi_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
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struct sun8i_mixer *mixer,
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int index);
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#endif /* _SUN8I_VI_LAYER_H_ */
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