drm/vc4: hdmi: Move hdmi reset to bind

The hdmi reset got moved to a later point in the commit 9045e91a476b
("drm/vc4: hdmi: Add reset callback").

However, the reset now occurs after vc4_hdmi_cec_init and so tramples
the setup of registers like HDMI_CEC_CNTRL_1

This only affects pi0-3 as on pi4 the cec registers are in a separate
block

Fixes: 9045e91a476b ("drm/vc4: hdmi: Add reset callback")
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Link: https://patchwork.freedesktop.org/patch/msgid/20210111142309.193441-3-maxime@cerno.tech

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 2e5449b..cb4594e 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -779,9 +779,6 @@ static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
                return;
        }
 
-       if (vc4_hdmi->variant->reset)
-               vc4_hdmi->variant->reset(vc4_hdmi);
-
        if (vc4_hdmi->variant->phy_init)
                vc4_hdmi->variant->phy_init(vc4_hdmi, vc4_conn_state);
 
@@ -1874,6 +1871,9 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
        vc4_hdmi->disable_wifi_frequencies =
                of_property_read_bool(dev->of_node, "wifi-2.4ghz-coexistence");
 
+       if (vc4_hdmi->variant->reset)
+               vc4_hdmi->variant->reset(vc4_hdmi);
+
        pm_runtime_enable(dev);
 
        drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS);