[PATCH 5/7] ASoC: amd: handle ACP3x i2s-sp watermark interrupt.

From: Ravulapati Vishnu vardhan rao  <Vishnuvardhanrao.Ravulapati@amd.com>
To: unlisted-recipients:; (no To-header on input)
Cc: <Alexander.Deucher@amd.com>,
	Ravulapati Vishnu vardhan rao 
	<Vishnuvardhanrao.Ravulapati@amd.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>,
	"Takashi Iwai" <tiwai@suse.com>,
	Vijendar Mukunda <Vijendar.Mukunda@amd.com>,
	"Maruthi Bayyavarapu" <maruthi.bayyavarapu@amd.com>,
	YueHaibing <yuehaibing@huawei.com>,
	Colin Ian King <colin.king@canonical.com>,
	"Kuninori Morimoto" <kuninori.morimoto.gx@renesas.com>,
	"moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER
	MANAGEM..."  <alsa-devel@alsa-project.org>,
	"open list" <linux-kernel@vger.kernel.org>
Subject: [PATCH 5/7] ASoC: amd: handle ACP3x i2s-sp watermark interrupt.
Date: Sat, 19 Oct 2019 02:35:43 +0530	[thread overview]
Message-ID: <1571432760-3008-5-git-send-email-Vishnuvardhanrao.Ravulapati@amd.com> (raw)
In-Reply-To: <1571432760-3008-1-git-send-email-Vishnuvardhanrao.Ravulapati@amd.com>

whenever audio data equal to I2S-SP fifo watermark level is
produced/consumed, interrupt is generated.

Signed-off-by: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati@amd.com>
---
 sound/soc/amd/raven/acp3x-pcm-dma.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c
index 4fcef3f..a000ac4 100644
--- a/sound/soc/amd/raven/acp3x-pcm-dma.c
+++ b/sound/soc/amd/raven/acp3x-pcm-dma.c
@@ -176,6 +176,13 @@ static irqreturn_t i2s_irq_handler(int irq, void *dev_id)
 		snd_pcm_period_elapsed(rv_i2s_data->play_stream);
 		play_flag = 1;
 	}
+	if ((val & BIT(I2S_TX_THRESHOLD)) &&
+				rv_i2s_data->i2ssp_play_stream) {
+		rv_writel(BIT(I2S_TX_THRESHOLD),
+			rv_i2s_data->acp3x_base	+ mmACP_EXTERNAL_INTR_STAT);
+		snd_pcm_period_elapsed(rv_i2s_data->i2ssp_play_stream);
+		play_flag = 1;
+	}
 
 	if ((val & BIT(BT_RX_THRESHOLD)) && rv_i2s_data->capture_stream) {
 		rv_writel(BIT(BT_RX_THRESHOLD), rv_i2s_data->acp3x_base +
@@ -183,6 +190,13 @@ static irqreturn_t i2s_irq_handler(int irq, void *dev_id)
 		snd_pcm_period_elapsed(rv_i2s_data->capture_stream);
 		cap_flag = 1;
 	}
+	if ((val & BIT(I2S_RX_THRESHOLD)) &&
+				rv_i2s_data->i2ssp_capture_stream) {
+		rv_writel(BIT(I2S_RX_THRESHOLD),
+			 rv_i2s_data->acp3x_base + mmACP_EXTERNAL_INTR_STAT);
+		snd_pcm_period_elapsed(rv_i2s_data->i2ssp_capture_stream);
+		cap_flag = 1;
+	}
 
 	if (play_flag | cap_flag)
 		return IRQ_HANDLED;
-- 
2.7.4

