[PATCH 10/15] drm/sun4i: tcon: Switch mux on only for composite

Maxime Ripard
2017-03-07T08:56:29Z

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 <maxime.ripard@free-electrons.com>
---
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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