drm/vc4: hdmi: Store the encoder type in the variant structure

The vc4 CRTC will use the encoder type to control its output clock
muxing. However, this will be different from HDMI0 to HDMI1, so let's
store our type in the variant structure so that we can support multiple
controllers later on.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://patchwork.freedesktop.org/patch/msgid/2736a86b498551ba9dbc5803c5bb910627a2550c.1599120059.git-series.maxime@cerno.tech

drivers/gpu/drm/vc4/vc4_hdmi.c

@@ -1267,7 +1267,7 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 
 	dev_set_drvdata(dev, vc4_hdmi);
 	encoder = &vc4_hdmi->encoder.base.base;
-	vc4_hdmi->encoder.base.type = VC4_ENCODER_TYPE_HDMI0;
+	vc4_hdmi->encoder.base.type = variant->encoder_type;
 	vc4_hdmi->pdev = pdev;
 	vc4_hdmi->variant = variant;
 
@@ -1446,6 +1446,7 @@ static int vc4_hdmi_dev_remove(struct platform_device *pdev)
 }
 
 static const struct vc4_hdmi_variant bcm2835_variant = {
+	.encoder_type		= VC4_ENCODER_TYPE_HDMI0,
 	.registers		= vc4_hdmi_fields,
 	.num_registers		= ARRAY_SIZE(vc4_hdmi_fields),
 

drivers/gpu/drm/vc4/vc4_hdmi.h

@@ -27,6 +27,9 @@ struct vc4_hdmi;
 struct vc4_hdmi_register;
 
 struct vc4_hdmi_variant {
+	/* Encoder Type for that controller */
+	enum vc4_encoder_type encoder_type;
+
 	/* List of the registers available on that variant */
 	const struct vc4_hdmi_register *registers;