[PATCH v6 17/27] drm: sun4i: de2/de3: add generic blender register reference function

Ryan Walklin
2025-02-16T08:57:50Z

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>
---
drivers/gpu/drm/sun4i/sun8i_mixer.h | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.h b/drivers/gpu/drm/sun4i/sun8i_mixer.h
index baf2d024898a9..db962ccd66964 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.h
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.h
@@ -235,6 +235,12 @@ 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)
{
--
2.48.1