From 7710f8e879538cbcf635f5075e36297e0800b98e Mon Sep 17 00:00:00 2001
From: Bin Yang <yangbin@rock-chips.com>
Date: Wed, 8 Feb 2017 17:14:09 +0800
Subject: [PATCH] drm/rockchip: cdn-dp: add switch state to support dp audio

Change-Id: Ifb4f6c8c2ecc0df5a021c38c7b5fe57da5c98e6b
Signed-off-by: Bin Yang <yangbin@rock-chips.com>
---
 drivers/gpu/drm/rockchip/cdn-dp-core.c | 20 +++++++++++++++++++-
 drivers/gpu/drm/rockchip/cdn-dp-core.h |  6 ++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
index a11292dfe544..a61aca213813 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -693,8 +693,13 @@ static void cdn_dp_encoder_enable(struct drm_encoder *encoder)
 	}
 out:
 	mutex_unlock(&dp->lock);
-	if (!ret)
+	if (!ret) {
+#ifdef CONFIG_SWITCH
+		switch_set_state(&dp->switchdev, 1);
+#else
 		hdmi_event_connect(dp->dev);
+#endif
+	}
 }
 
 static void cdn_dp_encoder_disable(struct drm_encoder *encoder)
@@ -711,7 +716,11 @@ static void cdn_dp_encoder_disable(struct drm_encoder *encoder)
 		}
 	}
 	mutex_unlock(&dp->lock);
+#ifdef CONFIG_SWITCH
+	switch_set_state(&dp->switchdev, 0);
+#else
 	hdmi_event_disconnect(dp->dev);
+#endif
 
 	/*
 	 * In the following 2 cases, we need to run the event_work to re-enable
@@ -1109,6 +1118,11 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
 
 	drm_connector_helper_add(connector, &cdn_dp_connector_helper_funcs);
 
+#ifdef CONFIG_SWITCH
+	dp->switchdev.name = "hdmi";
+	switch_dev_register(&dp->switchdev);
+#endif
+
 	ret = drm_mode_connector_attach_encoder(connector, encoder);
 	if (ret) {
 		DRM_ERROR("failed to attach connector and encoder\n");
@@ -1150,6 +1164,10 @@ static void cdn_dp_unbind(struct device *dev, struct device *master, void *data)
 	struct drm_encoder *encoder = &dp->encoder;
 	struct drm_connector *connector = &dp->connector;
 
+#ifdef CONFIG_SWITCH
+	switch_dev_unregister(&dp->switchdev);
+#endif
+
 	cancel_work_sync(&dp->event_work);
 	platform_device_unregister(dp->audio_pdev);
 	cdn_dp_encoder_disable(encoder);
diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.h b/drivers/gpu/drm/rockchip/cdn-dp-core.h
index 7d48661362c8..33bc49cc7bc8 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.h
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.h
@@ -19,6 +19,9 @@
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_dp_helper.h>
 #include <drm/drm_panel.h>
+#ifdef CONFIG_SWITCH
+#include <linux/switch.h>
+#endif
 #include "rockchip_drm_drv.h"
 
 #define MAX_PHY		2
@@ -107,5 +110,8 @@ struct cdn_dp_device {
 
 	u8 dpcd[DP_RECEIVER_CAP_SIZE];
 	bool sink_has_audio;
+#ifdef CONFIG_SWITCH
+	struct switch_dev switchdev;
+#endif
 };
 #endif  /* _CDN_DP_CORE_H */
-- 
2.34.1