[PATCH 10/15] drm/sun4i: tcon: Switch mux on only for composite
From: Maxime Ripard <hidden>
Date: 2017-03-07 09:11:01
Also in:
dri-devel, linux-clk, linux-devicetree, lkml
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm drivers for allwinner a10, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Chen-Yu Tsai, Linus Torvalds
Even though that mux is undocumented, it seems like it needs to be set to 1 when using composite, and 0 when using HDMI. Signed-off-by: Maxime Ripard <redacted> --- drivers/gpu/drm/sun4i/sun4i_tcon.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index d2335f109601..93249c5ab1e4 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c@@ -268,11 +268,16 @@ void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon, struct drm_encoder *encoder, SUN4I_TCON_GCTL_IOMAP_MASK, SUN4I_TCON_GCTL_IOMAP_TCON1); + if (encoder->encoder_type == DRM_MODE_ENCODER_TVDAC) + val = 1; + else + val = 0; + /* * FIXME: Undocumented bits */ if (tcon->quirks->has_unknown_mux) - regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, 1); + regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, val); } EXPORT_SYMBOL(sun4i_tcon1_mode_set);
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