| Message ID | 9f97dbff6f99c108b5f4b7f144d02dde8c253ab6.1493812478.git-series.maxime.ripard@free-electrons.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, May 3, 2017 at 7:59 PM, Maxime Ripard <maxime.ripard@free-electrons.com> wrote: > 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> Acked-by: Chen-Yu Tsai <wens@csie.org>
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index 0204d9fadb66..1c609d808b86 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -111,16 +111,23 @@ 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);
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 | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)