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drm: sun4i: de2/de3: add generic blender register reference function

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The DE2 and DE3 engines have a blender register range within the
mixer engine register map, whereas the DE33 separates this out into
a separate display group.

Prepare for this by adding a function to look the blender reference up,
with a subsequent patch to add a conditional based on the DE type.

Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Ryan Walklin <ryan@testtoast.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20250528092431.28825-4-ryan@testtoast.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
This commit is contained in:
Jernej Skrabec 2025-05-28 21:22:08 +12:00 committed by Maxime Ripard
parent a281758944
commit ef54f1dc24
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1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/sun4i/sun8i_mixer.h
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@ -222,6 +222,12 @@ sun8i_blender_base(struct sun8i_mixer *mixer)
return mixer->cfg->de_type == SUN8I_MIXER_DE3 ? DE3_BLD_BASE : DE2_BLD_BASE;
}
static inline struct regmap *
sun8i_blender_regmap(struct sun8i_mixer *mixer)
{
return mixer->engine.regs;
}
static inline u32
sun8i_channel_base(struct sun8i_mixer *mixer, int channel)
{