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Commit b7cb9b91 authored by Maxime Ripard's avatar Maxime Ripard
Browse files

drm/sun4i: tcon: Switch mux on only for composite 



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: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: default avatarChen-Yu Tsai <wens@csie.org>
Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
parent f8c73f4f

drivers/gpu/drm/sun4i/sun4i_tcon.c

+8 −1
Original line number Diff line number Diff line
@@ -112,16 +112,23 @@ EXPORT_SYMBOL(sun4i_tcon_enable_vblank); 
void sun4i_tcon_set_mux(struct sun4i_tcon *tcon, int channel,

			struct drm_encoder *encoder)

{

	u32 val;



	if (!tcon->quirks->has_unknown_mux)

		return;



	if (channel != 1)

		return;



	if (encoder->encoder_type == DRM_MODE_ENCODER_TVDAC)

		val = 1;

	else

		val = 0;



	/*

	 * FIXME: Undocumented bits

	 */

	regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, 1);

	regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, val);

}

EXPORT_SYMBOL(sun4i_tcon_set_mux);