From a1c15deb2b2190751ae327cb0492568b5ae5fbfc Mon Sep 17 00:00:00 2001
From: Zheng Yang <zhengyang@rock-chips.com>
Date: Wed, 2 May 2012 11:49:51 +0800
Subject: [PATCH] rk30 hdmi: support switch class to detect hotplug status.

---
 drivers/video/rockchip/hdmi/rk30_hdmi.c      | 19 ++++++++++++++-----
 drivers/video/rockchip/hdmi/rk30_hdmi.h      | 10 ++++++++--
 drivers/video/rockchip/hdmi/rk30_hdmi_task.c |  8 +++++++-
 3 files changed, 29 insertions(+), 8 deletions(-)

diff --git a/drivers/video/rockchip/hdmi/rk30_hdmi.c b/drivers/video/rockchip/hdmi/rk30_hdmi.c
index c0038bf0274c..ef50f282d87a 100755
--- a/drivers/video/rockchip/hdmi/rk30_hdmi.c
+++ b/drivers/video/rockchip/hdmi/rk30_hdmi.c
@@ -154,10 +154,13 @@ static int __devinit rk30_hdmi_probe (struct platform_device *pdev)
 	hdmi->early_suspend.level = EARLY_SUSPEND_LEVEL_DISABLE_FB - 10;
 	register_early_suspend(&hdmi->early_suspend);
 	#endif
-	
-	
+		
 	hdmi_register_display_sysfs(hdmi, hdmi->dev);
-	
+	#ifdef CONFIG_SWITCH
+	hdmi->switch_hdmi.name="hdmi";
+	switch_dev_register(&(hdmi->switch_hdmi));
+	#endif
+		
 	spin_lock_init(&hdmi->irq_lock);
 	mutex_init(&hdmi->enable_mutex);
 	
@@ -180,9 +183,12 @@ static int __devinit rk30_hdmi_probe (struct platform_device *pdev)
 	hdmi_dbg(hdmi->dev, "rk30 hdmi probe sucess.\n");
 	return 0;
 err2:
-#ifdef CONFIG_HAS_EARLYSUSPEND
+	#ifdef CONFIG_SWITCH
+	switch_dev_unregister(&(hdmi->switch_hdmi));
+	#endif
+	#ifdef CONFIG_HAS_EARLYSUSPEND
 	unregister_early_suspend(&hdmi->early_suspend);
-#endif
+	#endif
 	iounmap((void*)hdmi->regbase);
 err1:
 	release_mem_region(res->start,(res->end - res->start) + 1);
@@ -197,6 +203,9 @@ static int __devexit rk30_hdmi_remove(struct platform_device *pdev)
 {
 	flush_scheduled_work();
 	destroy_workqueue(hdmi->workqueue);
+	#ifdef CONFIG_SWITCH
+	switch_dev_unregister(&(hdmi->switch_hdmi));
+	#endif
 	#ifdef CONFIG_HAS_EARLYSUSPEND
 	unregister_early_suspend(&hdmi->early_suspend);
 	#endif
diff --git a/drivers/video/rockchip/hdmi/rk30_hdmi.h b/drivers/video/rockchip/hdmi/rk30_hdmi.h
index caf8b495f0fe..7e57f8fc4e25 100755
--- a/drivers/video/rockchip/hdmi/rk30_hdmi.h
+++ b/drivers/video/rockchip/hdmi/rk30_hdmi.h
@@ -1,18 +1,20 @@
 #ifndef __RK30_HDMI_H__
 #define __RK30_HDMI_H__
 
+#include <linux/kernel.h>
 #include <linux/fb.h>
 #include <linux/spinlock.h>
 #include <linux/mutex.h>
 #include <linux/device.h>
 #include <linux/workqueue.h>
 #include <linux/display-sys.h>
-
+#ifdef CONFIG_SWITCH
+#include <linux/switch.h>
+#endif
 #ifdef CONFIG_HAS_EARLYSUSPEND
 #include <linux/earlysuspend.h>
 #endif
 
-//#include "../../display/screen/screen.h"
 #include<linux/rk_screen.h>
 #include <linux/rk_fb.h>
 #include "rk_hdmi.h"
@@ -45,6 +47,10 @@ struct hdmi {
 	int				irq;
 	struct rk_lcdc_device_driver *lcdc;
 	
+	#ifdef CONFIG_SWITCH
+	struct switch_dev	switch_hdmi;
+	#endif
+	
 	struct workqueue_struct *workqueue;
 	struct delayed_work delay_work;
 	
diff --git a/drivers/video/rockchip/hdmi/rk30_hdmi_task.c b/drivers/video/rockchip/hdmi/rk30_hdmi_task.c
index 72728864831c..04e46a7c8951 100755
--- a/drivers/video/rockchip/hdmi/rk30_hdmi_task.c
+++ b/drivers/video/rockchip/hdmi/rk30_hdmi_task.c
@@ -78,6 +78,10 @@ void hdmi_sys_remove(void)
 	memset(&hdmi->edid, 0, sizeof(struct hdmi_edid));
 	INIT_LIST_HEAD(&hdmi->edid.modelist);
 	hdmi->display	= HDMI_DISABLE;
+	kobject_uevent_env(&hdmi->dev->kobj, KOBJ_REMOVE, envp);
+	#ifdef CONFIG_SWITCH
+	switch_set_state(&(hdmi->switch_hdmi), 0);
+	#endif
 }
 
 static void hdmi_sys_sleep(void)
@@ -188,7 +192,6 @@ void hdmi_work(struct work_struct *work)
 				complete(&hdmi->complete);
 				hdmi->wait = 0;	
 			}
-			kobject_uevent_env(&hdmi->dev->kobj, KOBJ_REMOVE, envp);
 			mutex_unlock(&work_mutex);
 			return;
 		}
@@ -210,6 +213,9 @@ void hdmi_work(struct work_struct *work)
 				{
 					hdmi->state = SYSTEM_CONFIG;	
 					kobject_uevent_env(&hdmi->dev->kobj, KOBJ_ADD, envp);
+					#ifdef CONFIG_SWITCH
+					switch_set_state(&(hdmi->switch_hdmi), 1);
+					#endif
 				}
 				break;
 			case SYSTEM_CONFIG:
-- 
2.34.1