From 003e1bde450ed2103395f13a2511eb567df4408e Mon Sep 17 00:00:00 2001
From: Lianlian Zhu<lianlian.zhu@amlogic.com>
Date: Wed, 07  Feb  2018  14:08:16  +0000
Subject: hdmi_tx: solve audiopolicy update at flash plug issue[1/1]

PD#155057: add a delay of 2000ms for disconect to filt the flash plug

Change-Id: Ic5402ccf9f03293a87ee0321c7f8754b2a1c5310
Signed-off-by: Lianlian Zhu <lianlian.zhu@amlogic.com>
---
diff --git a/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hdmi_tx_main.c b/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hdmi_tx_main.c
index ebf95ab..d791870 100644
--- a/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hdmi_tx_main.c
+++ b/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hdmi_tx_main.c
@@ -2744,7 +2744,6 @@ static void hdmitx_hpd_plugin_handler(struct work_struct *work)
 	hdmitx_notify_hpd(hdev->hpd_state);
 
 	extcon_set_state_sync(hdmitx_extcon_hdmi, EXTCON_DISP_HDMI, 1);
-	extcon_set_state_sync(hdmitx_excton_audio, EXTCON_DISP_HDMI, 1);
 
 	mutex_unlock(&setclk_mutex);
 }
@@ -2762,6 +2761,17 @@ static void clear_hdr_info(struct hdmitx_dev *hdev)
 	}
 }
 
+static void hdmitx_aud_hpd_plug_handler(struct work_struct *work)
+{
+	int st;
+	struct hdmitx_dev *hdev = container_of((struct delayed_work *)work,
+		struct hdmitx_dev, work_aud_hpd_plug);
+
+	st = hdev->HWOp.CntlMisc(hdev, MISC_HPD_GPI_ST, 0);
+	pr_info("hdmitx_aud_hpd_plug_handler state:%d\n", st);
+	extcon_set_state_sync(hdmitx_excton_audio, EXTCON_DISP_HDMI, st);
+}
+
 static void hdmitx_hpd_plugout_handler(struct work_struct *work)
 {
 	struct hdmitx_dev *hdev = container_of((struct delayed_work *)work,
@@ -2795,9 +2805,7 @@ static void hdmitx_hpd_plugout_handler(struct work_struct *work)
 	hdmitx_edid_ram_buffer_clear(hdev);
 	hdev->hpd_state = 0;
 	hdmitx_notify_hpd(hdev->hpd_state);
-
 	extcon_set_state_sync(hdmitx_extcon_hdmi, EXTCON_DISP_HDMI, 0);
-	extcon_set_state_sync(hdmitx_excton_audio, EXTCON_DISP_HDMI, 0);
 	mutex_unlock(&setclk_mutex);
 }
 
@@ -2856,6 +2864,8 @@ static int hdmi_task_handle(void *data)
 		hdmitx_hpd_plugin_handler);
 	INIT_DELAYED_WORK(&hdmitx_device->work_hpd_plugout,
 		hdmitx_hpd_plugout_handler);
+	INIT_DELAYED_WORK(&hdmitx_device->work_aud_hpd_plug,
+		hdmitx_aud_hpd_plug_handler);
 	INIT_WORK(&hdmitx_device->work_internal_intr,
 		hdmitx_internal_intr_handler);
 
diff --git a/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hw/hdmi_tx_hw.c b/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hw/hdmi_tx_hw.c
index c2a2fd6..bdc0d6b 100644
--- a/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hw/hdmi_tx_hw.c
+++ b/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hw/hdmi_tx_hw.c
@@ -646,6 +646,8 @@ static irqreturn_t intr_handler(int irq, void *dev)
 	}
 	/* HPD rising */
 	if (data32 & (1 << 1)) {
+		queue_delayed_work(hdev->hdmi_wq,
+			&hdev->work_aud_hpd_plug, HZ / 2);
 		hdev->hdmitx_event |= HDMI_TX_HPD_PLUGIN;
 		hdev->hdmitx_event &= ~HDMI_TX_HPD_PLUGOUT;
 		queue_delayed_work(hdev->hdmi_wq,
@@ -653,6 +655,8 @@ static irqreturn_t intr_handler(int irq, void *dev)
 	}
 	/* HPD falling */
 	if (data32 & (1 << 2)) {
+		queue_delayed_work(hdev->hdmi_wq,
+			&hdev->work_aud_hpd_plug, 2 * HZ);
 		hdev->hdmitx_event |= HDMI_TX_HPD_PLUGOUT;
 		hdev->hdmitx_event &= ~HDMI_TX_HPD_PLUGIN;
 		queue_delayed_work(hdev->hdmi_wq,
diff --git a/include/linux/amlogic/media/vout/hdmi_tx/hdmi_tx_module.h b/include/linux/amlogic/media/vout/hdmi_tx/hdmi_tx_module.h
index b44bc42..a118530 100644
--- a/include/linux/amlogic/media/vout/hdmi_tx/hdmi_tx_module.h
+++ b/include/linux/amlogic/media/vout/hdmi_tx/hdmi_tx_module.h
@@ -208,6 +208,7 @@ struct hdmitx_dev {
 	struct device *hdtx_dev;
 	struct delayed_work work_hpd_plugin;
 	struct delayed_work work_hpd_plugout;
+	struct delayed_work work_aud_hpd_plug;
 	struct delayed_work work_rxsense;
 	struct work_struct work_internal_intr;
 	struct work_struct work_hdr;
--
cgit