From fadedb6bdbf603db0424cf7808f7da64bceb7a0a Mon Sep 17 00:00:00 2001
From: Xing Wang <xing.wang@amlogic.com>
Date: Wed, 25 Sep 2019 10:24:14 +0800
Subject: [PATCH] audio: auge: toddr irq interrupt protection for freeze mode
 [1/1]

PD#TV-10448

Problem:
crash when finished early supend but not entry suspend,
the system is waked up

Solution:
add toddr irq interrupt protection when entry suspend
and exit from suspend

Verify:
x301

Change-Id: I7ade7a745511bab83c70b5649b6af318163568d9
Signed-off-by: Xing Wang <xing.wang@amlogic.com>
---
 sound/soc/amlogic/auge/ddr_mngr.c | 13 +++++++++++++
 sound/soc/amlogic/auge/ddr_mngr.h |  1 +
 sound/soc/amlogic/auge/loopback.c |  2 ++
 sound/soc/amlogic/auge/pdm.c      |  2 ++
 4 files changed, 18 insertions(+)

diff --git a/sound/soc/amlogic/auge/ddr_mngr.c b/sound/soc/amlogic/auge/ddr_mngr.c
index 3c9946b..1fa7282 100644
--- a/sound/soc/amlogic/auge/ddr_mngr.c
+++ b/sound/soc/amlogic/auge/ddr_mngr.c
@@ -201,6 +201,19 @@ int aml_audio_unregister_toddr(struct device *dev, void *data)
 	return ret;
 }
 
+void audio_toddr_irq_enable(struct toddr *to, bool en)
+{
+	if (!to || !to->in_use || to->irq < 0)
+		return;
+
+	mutex_lock(&ddr_mutex);
+	if (en)
+		enable_irq(to->irq);
+	else
+		disable_irq_nosync(to->irq);
+	mutex_unlock(&ddr_mutex);
+}
+
 static inline unsigned int
 	calc_toddr_address(unsigned int reg, unsigned int base)
 {
diff --git a/sound/soc/amlogic/auge/ddr_mngr.h b/sound/soc/amlogic/auge/ddr_mngr.h
index 84dc7be..476b54b 100644
--- a/sound/soc/amlogic/auge/ddr_mngr.h
+++ b/sound/soc/amlogic/auge/ddr_mngr.h
@@ -248,6 +248,7 @@ struct toddr *aml_audio_register_toddr(struct device *dev,
 		struct aml_audio_controller *actrl,
 		irq_handler_t handler, void *data);
 int aml_audio_unregister_toddr(struct device *dev, void *data);
+void audio_toddr_irq_enable(struct toddr *to, bool en);
 int aml_toddr_set_buf(struct toddr *to, unsigned int start,
 			unsigned int end);
 int aml_toddr_set_buf_startaddr(struct toddr *to, unsigned int start);
diff --git a/sound/soc/amlogic/auge/loopback.c b/sound/soc/amlogic/auge/loopback.c
index a5e622c..7290218 100644
--- a/sound/soc/amlogic/auge/loopback.c
+++ b/sound/soc/amlogic/auge/loopback.c
@@ -759,6 +759,7 @@ static int loopback_dai_trigger(
 				pm_audio_set_suspend(false);
 				/* VAD switch to alsa buffer */
 				vad_update_buffer(0);
+				audio_toddr_irq_enable(p_loopback->tddr, true);
 				break;
 			}
 
@@ -786,6 +787,7 @@ static int loopback_dai_trigger(
 			    pm_audio_is_suspend()) {
 				/* switch to VAD buffer */
 				vad_update_buffer(1);
+				audio_toddr_irq_enable(p_loopback->tddr, false);
 				break;
 			}
 
diff --git a/sound/soc/amlogic/auge/pdm.c b/sound/soc/amlogic/auge/pdm.c
index b1c3e57..f03660c 100644
--- a/sound/soc/amlogic/auge/pdm.c
+++ b/sound/soc/amlogic/auge/pdm.c
@@ -944,6 +944,7 @@ static int aml_pdm_dai_trigger(
 			pm_audio_set_suspend(false);
 			/* VAD switch to alsa buffer */
 			vad_update_buffer(0);
+			audio_toddr_irq_enable(p_pdm->tddr, true);
 			break;
 		}
 
@@ -966,6 +967,7 @@ static int aml_pdm_dai_trigger(
 				&& pm_audio_is_suspend()) {
 				/* switch to VAD buffer */
 				vad_update_buffer(1);
+				audio_toddr_irq_enable(p_pdm->tddr, false);
 				break;
 			}
 			pdm_enable(0);
-- 
2.7.4