drm/bridge: adv7511: use update latch for AVI infoframes

Instead of disabling and then reenabling AVI infoframe, use the
recommended way of updating it on the fly: latch current values using
the ADV7511_REG_INFOFRAME_UPDATE register.

Acked-by: Maxime Ripard <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Baryshkov <[e-mail]>

drivers/gpu/drm/bridge/adv7511/adv7511_drv.c

···
 {
 	struct adv7511 *adv7511 = bridge_to_adv7511(bridge);
 
-	adv7511_bridge_hdmi_clear_infoframe(bridge, type);
-
 	switch (type) {
 	case HDMI_INFOFRAME_TYPE_AVI:
+		/* send current AVI infoframe values while updating */
+		regmap_update_bits(adv7511->regmap, ADV7511_REG_INFOFRAME_UPDATE,
+				   BIT(6), BIT(6));
+
 		/* The AVI infoframe id is not configurable */
 		regmap_bulk_write(adv7511->regmap, ADV7511_REG_AVI_INFOFRAME_VERSION,
 				  buffer + 1, len - 1);
 
+		regmap_write(adv7511->regmap, ADV7511_REG_AUDIO_INFOFRAME_LENGTH, 0x2);
+		regmap_write(adv7511->regmap, ADV7511_REG_AUDIO_INFOFRAME(1), 0x1);
+
+		/* use AVI infoframe updated info */
+		regmap_update_bits(adv7511->regmap, ADV7511_REG_INFOFRAME_UPDATE,
+				   BIT(6), 0);
+
 		adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME);
 		break;
 	case HDMI_INFOFRAME_TYPE_SPD:
+		adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_SPD);
 		regmap_bulk_write(adv7511->regmap_packet, ADV7511_PACKET_SPD(0),
 				  buffer, len);
 		adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_SPD);
 		break;
 	case HDMI_INFOFRAME_TYPE_VENDOR:
+		adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_SPARE1);
 		regmap_bulk_write(adv7511->regmap_packet, ADV7511_PACKET_SPARE1(0),
 				  buffer, len);
 		adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_SPARE1);