Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Received-SPF: None (protection.outlook.com: amd.com does not designate
 permitted sender hosts)
From:   Vijendar Mukunda <Vijendar.Mukunda@amd.com>
CC:     Vijendar Mukunda <Vijendar.Mukunda@amd.com>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>,
        Akshu Agrawal <akshu.agrawal@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>,
        "Kuninori Morimoto" <kuninori.morimoto.gx@renesas.com>,
        Wei Yongjun <weiyongjun1@huawei.com>,
        Jason Clinton <jclinton@chromium.org>,
        "Guenter Roeck" <linux@roeck-us.net>,
        Kate Stewart <kstewart@linuxfoundation.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@alsa-project.org>,
        open list <linux-kernel@vger.kernel.org>
Subject: [PATCH v2 11/11] ASoC: amd: dma driver changes for bt i2s instance
Date:   Thu, 26 Apr 2018 16:45:57 +0530
Message-ID: <1524741374-13523-11-git-send-email-Vijendar.Mukunda@amd.com>
In-Reply-To: <1524741374-13523-1-git-send-email-Vijendar.Mukunda@amd.com>
References: <1524741374-13523-1-git-send-email-Vijendar.Mukunda@amd.com>
MIME-Version: 1.0
Content-Type: text/plain
SpamDiagnosticOutput: 1:99
SpamDiagnosticMetadata: NSPM
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Apr 2018 11:18:35.7091
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: b34745dd-1942-48d0-9968-08d5ab677432
X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXCHOV01.amd.com]
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM3PR12MB0761
To:     unlisted-recipients:; (no To-header on input)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

With in ACP, There are three I2S controllers can be
configured/enabled ( I2S SP, I2S MICSP, I2S BT).
Default enabled I2S controller instance is I2S SP.
This patch provides required changes to support I2S BT
controller Instance.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
---
v1->v2: defined i2s instance macros in acp header file
v2->v3: sqaushed previous patch series and spilt changes
	into multiple patches (acp dma driver code cleanup
	patches and bt i2s instance specific changes)
 sound/soc/amd/acp-da7219-max98357a.c |  23 ++++
 sound/soc/amd/acp-pcm-dma.c          | 257 +++++++++++++++++++++++++++--------
 sound/soc/amd/acp.h                  |  40 ++++++
 3 files changed, 262 insertions(+), 58 deletions(-)

diff --git a/sound/soc/amd/acp-da7219-max98357a.c b/sound/soc/amd/acp-da7219-max98357a.c
index 133139d..b3184ab 100644
--- a/sound/soc/amd/acp-da7219-max98357a.c
+++ b/sound/soc/amd/acp-da7219-max98357a.c
@@ -36,6 +36,7 @@
 #include <linux/input.h>
 #include <linux/acpi.h>
 
+#include "acp.h"
 #include "../codecs/da7219.h"
 #include "../codecs/da7219-aad.h"
 
@@ -44,6 +45,7 @@
 
 static struct snd_soc_jack cz_jack;
 static struct clk *da7219_dai_clk;
+extern int bt_pad_enable;
 
 static int cz_da7219_init(struct snd_soc_pcm_runtime *rtd)
 {
@@ -132,6 +134,9 @@ static const struct snd_pcm_hw_constraint_list constraints_channels = {
 static int cz_da7219_startup(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_card *card = rtd->card;
+	struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);
 
 	/*
 	 * On this platform for PCM device we support stereo
@@ -143,6 +148,7 @@ static int cz_da7219_startup(struct snd_pcm_substream *substream)
 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 				   &constraints_rates);
 
+	machine->i2s_instance = I2S_BT_INSTANCE;
 	return da7219_clk_enable(substream);
 }
 
@@ -153,6 +159,11 @@ static void cz_da7219_shutdown(struct snd_pcm_substream *substream)
 
 static int cz_max_startup(struct snd_pcm_substream *substream)
 {
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_card *card = rtd->card;
+	struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);
+
+	machine->i2s_instance = I2S_SP_INSTANCE;
 	return da7219_clk_enable(substream);
 }
 
@@ -163,6 +174,11 @@ static void cz_max_shutdown(struct snd_pcm_substream *substream)
 
 static int cz_dmic_startup(struct snd_pcm_substream *substream)
 {
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_card *card = rtd->card;
+	struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);
+
+	machine->i2s_instance = I2S_SP_INSTANCE;
 	return da7219_clk_enable(substream);
 }
 
@@ -266,10 +282,16 @@ static int cz_probe(struct platform_device *pdev)
 {
 	int ret;
 	struct snd_soc_card *card;
+	struct acp_platform_info *machine;
 
+	machine = devm_kzalloc(&pdev->dev, sizeof(struct acp_platform_info),
+			       GFP_KERNEL);
+	if (!machine)
+		return -ENOMEM;
 	card = &cz_card;
 	cz_card.dev = &pdev->dev;
 	platform_set_drvdata(pdev, card);
+	snd_soc_card_set_drvdata(card, machine);
 	ret = devm_snd_soc_register_card(&pdev->dev, &cz_card);
 	if (ret) {
 		dev_err(&pdev->dev,
@@ -277,6 +299,7 @@ static int cz_probe(struct platform_device *pdev)
 				cz_card.name, ret);
 		return ret;
 	}
+	bt_pad_enable = device_property_read_bool(&pdev->dev, "bt-pad-enable");
 	return 0;
 }
 
diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
index aa2fb38..e565cb9 100644
--- a/sound/soc/amd/acp-pcm-dma.c
+++ b/sound/soc/amd/acp-pcm-dma.c
@@ -37,12 +37,14 @@
 #define MAX_BUFFER (PLAYBACK_MAX_PERIOD_SIZE * PLAYBACK_MAX_NUM_PERIODS)
 #define MIN_BUFFER MAX_BUFFER
 
-#define ST_PLAYBACK_MAX_PERIOD_SIZE 8192
+#define ST_PLAYBACK_MAX_PERIOD_SIZE 4096
 #define ST_CAPTURE_MAX_PERIOD_SIZE  ST_PLAYBACK_MAX_PERIOD_SIZE
 #define ST_MAX_BUFFER (ST_PLAYBACK_MAX_PERIOD_SIZE * PLAYBACK_MAX_NUM_PERIODS)
 #define ST_MIN_BUFFER ST_MAX_BUFFER
 
 #define DRV_NAME "acp_audio_dma"
+bool bt_pad_enable = false;
+EXPORT_SYMBOL(bt_pad_enable);
 
 static const struct snd_pcm_hardware acp_pcm_hardware_playback = {
 	.info = SNDRV_PCM_INFO_INTERLEAVED |
@@ -357,6 +359,9 @@ static void acp_dma_start(void __iomem *acp_mmio,
 	case ACP_TO_I2S_DMA_CH_NUM:
 	case ACP_TO_SYSRAM_CH_NUM:
 	case I2S_TO_ACP_DMA_CH_NUM:
+	case ACP_TO_I2S_DMA_BT_INSTANCE_CH_NUM:
+	case ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM:
+	case I2S_TO_ACP_DMA_BT_INSTANCE_CH_NUM:
 		dma_ctrl |= ACP_DMA_CNTL_0__DMAChIOCEn_MASK;
 		break;
 	default:
@@ -519,6 +524,13 @@ static int acp_init(void __iomem *acp_mmio, u32 asic_type)
 	val &= ~ACP_SOFT_RESET__SoftResetAud_MASK;
 	acp_reg_write(val, acp_mmio, mmACP_SOFT_RESET);
 
+	/* For BT instance change pins from UART to BT */
+	if (bt_pad_enable) {
+		val = acp_reg_read(acp_mmio, mmACP_BT_UART_PAD_SEL);
+		val |= ACP_BT_UART_PAD_SELECT_MASK;
+		acp_reg_write(val, acp_mmio, mmACP_BT_UART_PAD_SEL);
+	}
+
 	/* initiailize Onion control DAGB register */
 	acp_reg_write(ACP_ONION_CNTL_DEFAULT, acp_mmio,
 		      mmACP_AXI2DAGB_ONION_CNTL);
@@ -637,6 +649,24 @@ static irqreturn_t dma_irq_handler(int irq, void *arg)
 			      acp_mmio, mmACP_EXTERNAL_INTR_STAT);
 	}
 
+	if ((intr_flag & BIT(ACP_TO_I2S_DMA_BT_INSTANCE_CH_NUM)) != 0) {
+		valid_irq = true;
+		if (acp_reg_read(acp_mmio, mmACP_DMA_CUR_DSCR_9) ==
+			PLAYBACK_START_DMA_DESCR_CH9)
+			dscr_idx = PLAYBACK_END_DMA_DESCR_CH8;
+		else
+			dscr_idx = PLAYBACK_START_DMA_DESCR_CH8;
+		config_acp_dma_channel(acp_mmio,
+				       SYSRAM_TO_ACP_BT_INSTANCE_CH_NUM,
+				       dscr_idx, 1, 0);
+		acp_dma_start(acp_mmio, SYSRAM_TO_ACP_BT_INSTANCE_CH_NUM,
+			      false);
+		snd_pcm_period_elapsed(irq_data->play_i2sbt_stream);
+		acp_reg_write((intr_flag &
+			      BIT(ACP_TO_I2S_DMA_BT_INSTANCE_CH_NUM)) << 16,
+			      acp_mmio, mmACP_EXTERNAL_INTR_STAT);
+	}
+
 	if ((intr_flag & BIT(I2S_TO_ACP_DMA_CH_NUM)) != 0) {
 		valid_irq = true;
 		if (acp_reg_read(acp_mmio, mmACP_DMA_CUR_DSCR_15) ==
@@ -659,6 +689,31 @@ static irqreturn_t dma_irq_handler(int irq, void *arg)
 			      acp_mmio, mmACP_EXTERNAL_INTR_STAT);
 	}
 
+	if ((intr_flag & BIT(I2S_TO_ACP_DMA_BT_INSTANCE_CH_NUM)) != 0) {
+		valid_irq = true;
+		if (acp_reg_read(acp_mmio, mmACP_DMA_CUR_DSCR_11) ==
+			CAPTURE_START_DMA_DESCR_CH11)
+			dscr_idx = CAPTURE_END_DMA_DESCR_CH10;
+		else
+			dscr_idx = CAPTURE_START_DMA_DESCR_CH10;
+		config_acp_dma_channel(acp_mmio,
+				       ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM,
+				       dscr_idx, 1, 0);
+		acp_dma_start(acp_mmio, ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM,
+			      false);
+		acp_reg_write((intr_flag &
+			      BIT(I2S_TO_ACP_DMA_BT_INSTANCE_CH_NUM)) << 16,
+			      acp_mmio, mmACP_EXTERNAL_INTR_STAT);
+	}
+
+	if ((intr_flag & BIT(ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM)) != 0) {
+		valid_irq = true;
+		snd_pcm_period_elapsed(irq_data->capture_i2sbt_stream);
+		acp_reg_write((intr_flag &
+			      BIT(ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM)) << 16,
+			      acp_mmio, mmACP_EXTERNAL_INTR_STAT);
+	}
+
 	if (valid_irq)
 		return IRQ_HANDLED;
 	else
@@ -714,11 +769,11 @@ static int acp_dma_open(struct snd_pcm_substream *substream)
 	 * This enablement is not required for another stream, if current
 	 * stream is not closed
 	 */
-	if (!intr_data->play_i2ssp_stream && !intr_data->capture_i2ssp_stream)
+	if (!intr_data->play_i2ssp_stream && !intr_data->capture_i2ssp_stream &&
+	    !intr_data->play_i2sbt_stream && !intr_data->capture_i2sbt_stream)
 		acp_reg_write(1, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB);
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		intr_data->play_i2ssp_stream = substream;
 		/*
 		 * For Stoney, Memory gating is disabled,i.e SRAM Banks
 		 * won't be turned off. The default state for SRAM banks is ON.
@@ -730,7 +785,6 @@ static int acp_dma_open(struct snd_pcm_substream *substream)
 							bank, true);
 		}
 	} else {
-		intr_data->capture_i2ssp_stream = substream;
 		if (intr_data->asic_type != CHIP_STONEY) {
 			for (bank = 5; bank <= 8; bank++)
 				acp_set_sram_bank_state(intr_data->acp_mmio,
@@ -754,6 +808,8 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
 	struct snd_soc_component *component = snd_soc_rtdcom_lookup(prtd,
 								    DRV_NAME);
 	struct audio_drv_data *adata = dev_get_drvdata(component->dev);
+	struct snd_soc_card *card = prtd->card;
+	struct acp_platform_info *pinfo = snd_soc_card_get_drvdata(card);
 
 	runtime = substream->runtime;
 	rtd = runtime->private_data;
@@ -761,52 +817,108 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
 	if (WARN_ON(!rtd))
 		return -EINVAL;
 
+	rtd->i2s_instance = pinfo->i2s_instance;
 	if (adata->asic_type == CHIP_STONEY) {
 		val = acp_reg_read(adata->acp_mmio,
 				   mmACP_I2S_16BIT_RESOLUTION_EN);
-		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-			val |= ACP_I2S_SP_16BIT_RESOLUTION_EN;
-		else
-			val |= ACP_I2S_MIC_16BIT_RESOLUTION_EN;
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+			switch (rtd->i2s_instance) {
+			case I2S_BT_INSTANCE:
+				val |= ACP_I2S_BT_16BIT_RESOLUTION_EN;
+				break;
+			case I2S_SP_INSTANCE:
+			default:
+				val |= ACP_I2S_SP_16BIT_RESOLUTION_EN;
+			}
+		} else {
+			switch (rtd->i2s_instance) {
+			case I2S_BT_INSTANCE:
+				val |= ACP_I2S_BT_16BIT_RESOLUTION_EN;
+				break;
+			case I2S_SP_INSTANCE:
+			default:
+				val |= ACP_I2S_MIC_16BIT_RESOLUTION_EN;
+			}
+		}
 		acp_reg_write(val, adata->acp_mmio,
 			      mmACP_I2S_16BIT_RESOLUTION_EN);
 	}
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		switch (adata->asic_type) {
-		case CHIP_STONEY:
-			rtd->pte_offset = ACP_ST_PLAYBACK_PTE_OFFSET;
+		switch (rtd->i2s_instance) {
+		case I2S_BT_INSTANCE:
+			rtd->pte_offset = ACP_ST_BT_PLAYBACK_PTE_OFFSET;
+			rtd->ch1 = SYSRAM_TO_ACP_BT_INSTANCE_CH_NUM;
+			rtd->ch2 = ACP_TO_I2S_DMA_BT_INSTANCE_CH_NUM;
+			rtd->sram_bank = ACP_SRAM_BANK_3_ADDRESS;
+			rtd->destination = TO_BLUETOOTH;
+			rtd->dma_dscr_idx_1 = PLAYBACK_START_DMA_DESCR_CH8;
+			rtd->dma_dscr_idx_2 = PLAYBACK_START_DMA_DESCR_CH9;
+			rtd->byte_cnt_high_reg_offset =
+				mmACP_I2S_BT_TRANSMIT_BYTE_CNT_HIGH;
+			rtd->byte_cnt_low_reg_offset =
+				mmACP_I2S_BT_TRANSMIT_BYTE_CNT_LOW;
+			adata->play_i2sbt_stream = substream;
 			break;
+		case I2S_SP_INSTANCE:
 		default:
-			rtd->pte_offset = ACP_PLAYBACK_PTE_OFFSET;
+			switch (adata->asic_type) {
+			case CHIP_STONEY:
+				rtd->pte_offset = ACP_ST_PLAYBACK_PTE_OFFSET;
+				break;
+			default:
+				rtd->pte_offset = ACP_PLAYBACK_PTE_OFFSET;
+			}
+			rtd->ch1 = SYSRAM_TO_ACP_CH_NUM;
+			rtd->ch2 = ACP_TO_I2S_DMA_CH_NUM;
+			rtd->sram_bank = ACP_SRAM_BANK_1_ADDRESS;
+			rtd->destination = TO_ACP_I2S_1;
+			rtd->dma_dscr_idx_1 = PLAYBACK_START_DMA_DESCR_CH12;
+			rtd->dma_dscr_idx_2 = PLAYBACK_START_DMA_DESCR_CH13;
+			rtd->byte_cnt_high_reg_offset =
+				mmACP_I2S_TRANSMIT_BYTE_CNT_HIGH;
+			rtd->byte_cnt_low_reg_offset =
+				mmACP_I2S_TRANSMIT_BYTE_CNT_LOW;
+			adata->play_i2ssp_stream = substream;
 		}
-		rtd->ch1 = SYSRAM_TO_ACP_CH_NUM;
-		rtd->ch2 = ACP_TO_I2S_DMA_CH_NUM;
-		rtd->sram_bank = ACP_SRAM_BANK_1_ADDRESS;
-		rtd->destination = TO_ACP_I2S_1;
-		rtd->dma_dscr_idx_1 = PLAYBACK_START_DMA_DESCR_CH12;
-		rtd->dma_dscr_idx_2 = PLAYBACK_START_DMA_DESCR_CH13;
-		rtd->byte_cnt_high_reg_offset =
-		mmACP_I2S_TRANSMIT_BYTE_CNT_HIGH;
-		rtd->byte_cnt_low_reg_offset = mmACP_I2S_TRANSMIT_BYTE_CNT_LOW;
 	} else {
-		switch (adata->asic_type) {
-		case CHIP_STONEY:
-			rtd->pte_offset = ACP_ST_CAPTURE_PTE_OFFSET;
-			rtd->sram_bank = ACP_SRAM_BANK_2_ADDRESS;
+		switch (rtd->i2s_instance) {
+		case I2S_BT_INSTANCE:
+			rtd->pte_offset = ACP_ST_BT_CAPTURE_PTE_OFFSET;
+			rtd->ch1 = ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM;
+			rtd->ch2 = I2S_TO_ACP_DMA_BT_INSTANCE_CH_NUM;
+			rtd->sram_bank = ACP_SRAM_BANK_4_ADDRESS;
+			rtd->destination = FROM_BLUETOOTH;
+			rtd->dma_dscr_idx_1 = CAPTURE_START_DMA_DESCR_CH10;
+			rtd->dma_dscr_idx_2 = CAPTURE_START_DMA_DESCR_CH11;
+			rtd->byte_cnt_high_reg_offset =
+				mmACP_I2S_BT_RECEIVE_BYTE_CNT_HIGH;
+			rtd->byte_cnt_low_reg_offset =
+				mmACP_I2S_BT_RECEIVE_BYTE_CNT_LOW;
+			adata->capture_i2sbt_stream = substream;
 			break;
+		case I2S_SP_INSTANCE:
 		default:
-			rtd->pte_offset = ACP_CAPTURE_PTE_OFFSET;
-			rtd->sram_bank = ACP_SRAM_BANK_5_ADDRESS;
+			rtd->ch1 = SYSRAM_TO_ACP_CH_NUM;
+			rtd->ch2 = ACP_TO_I2S_DMA_CH_NUM;
+			switch (adata->asic_type) {
+			case CHIP_STONEY:
+				rtd->pte_offset = ACP_ST_CAPTURE_PTE_OFFSET;
+				rtd->sram_bank = ACP_SRAM_BANK_2_ADDRESS;
+				break;
+			default:
+				rtd->pte_offset = ACP_CAPTURE_PTE_OFFSET;
+				rtd->sram_bank = ACP_SRAM_BANK_5_ADDRESS;
+			}
+			rtd->destination = FROM_ACP_I2S_1;
+			rtd->dma_dscr_idx_1 = CAPTURE_START_DMA_DESCR_CH14;
+			rtd->dma_dscr_idx_2 = CAPTURE_START_DMA_DESCR_CH15;
+			rtd->byte_cnt_high_reg_offset =
+				mmACP_I2S_RECEIVED_BYTE_CNT_HIGH;
+			rtd->byte_cnt_low_reg_offset =
+				mmACP_I2S_RECEIVED_BYTE_CNT_LOW;
+			adata->capture_i2ssp_stream = substream;
 		}
-		rtd->ch1 = SYSRAM_TO_ACP_CH_NUM;
-		rtd->ch2 = ACP_TO_I2S_DMA_CH_NUM;
-		rtd->destination = FROM_ACP_I2S_1;
-		rtd->dma_dscr_idx_1 = CAPTURE_START_DMA_DESCR_CH14;
-		rtd->dma_dscr_idx_2 = CAPTURE_START_DMA_DESCR_CH15;
-		rtd->byte_cnt_high_reg_offset =
-		mmACP_I2S_RECEIVED_BYTE_CNT_HIGH;
-		rtd->byte_cnt_low_reg_offset = mmACP_I2S_RECEIVED_BYTE_CNT_LOW;
 	}
 
 	size = params_buffer_bytes(params);
@@ -991,24 +1103,39 @@ static int acp_dma_close(struct snd_pcm_substream *substream)
 	struct audio_drv_data *adata = dev_get_drvdata(component->dev);
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		adata->play_i2ssp_stream = NULL;
-		/*
-		 * For Stoney, Memory gating is disabled,i.e SRAM Banks
-		 * won't be turned off. The default state for SRAM banks is ON.
-		 * Setting SRAM bank state code skipped for STONEY platform.
-		 * added condition checks for Carrizo platform only
-		 */
-		if (adata->asic_type != CHIP_STONEY) {
-			for (bank = 1; bank <= 4; bank++)
-				acp_set_sram_bank_state(adata->acp_mmio, bank,
-							false);
+		switch (rtd->i2s_instance) {
+		case I2S_BT_INSTANCE:
+			adata->play_i2sbt_stream = NULL;
+			break;
+		case I2S_SP_INSTANCE:
+		default:
+			adata->play_i2ssp_stream = NULL;
+			/*
+			 * For Stoney, Memory gating is disabled,i.e SRAM Banks
+			 * won't be turned off. The default state for SRAM banks
+			 * is ON.Setting SRAM bank state code skipped for STONEY
+			 * platform. Added condition checks for Carrizo platform
+			 * only.
+			 */
+			if (adata->asic_type != CHIP_STONEY) {
+				for (bank = 1; bank <= 4; bank++)
+					acp_set_sram_bank_state(adata->acp_mmio,
+								bank, false);
+			}
 		}
 	} else  {
-		adata->capture_i2ssp_stream = NULL;
-		if (adata->asic_type != CHIP_STONEY) {
-			for (bank = 5; bank <= 8; bank++)
-				acp_set_sram_bank_state(adata->acp_mmio, bank,
-							false);
+		switch (rtd->i2s_instance) {
+		case I2S_BT_INSTANCE:
+			adata->capture_i2sbt_stream = NULL;
+			break;
+		case I2S_SP_INSTANCE:
+		default:
+			adata->capture_i2ssp_stream = NULL;
+			if (adata->asic_type != CHIP_STONEY) {
+				for (bank = 5; bank <= 8; bank++)
+					acp_set_sram_bank_state(adata->acp_mmio,
+								bank, false);
+			}
 		}
 	}
 
@@ -1016,7 +1143,8 @@ static int acp_dma_close(struct snd_pcm_substream *substream)
 	 * Disable ACP irq, when the current stream is being closed and
 	 * another stream is also not active.
 	 */
-	if (!adata->play_i2ssp_stream && !adata->capture_i2ssp_stream)
+	if (!adata->play_i2ssp_stream && !adata->capture_i2ssp_stream &&
+	    !adata->play_i2sbt_stream && !adata->capture_i2sbt_stream)
 		acp_reg_write(0, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB);
 	kfree(rtd);
 	return 0;
@@ -1070,6 +1198,8 @@ static int acp_audio_probe(struct platform_device *pdev)
 
 	audio_drv_data->play_i2ssp_stream = NULL;
 	audio_drv_data->capture_i2ssp_stream = NULL;
+	audio_drv_data->play_i2sbt_stream = NULL;
+	audio_drv_data->capture_i2sbt_stream = NULL;
 
 	audio_drv_data->asic_type =  *pdata;
 
@@ -1126,6 +1256,7 @@ static int acp_pcm_resume(struct device *dev)
 {
 	u16 bank;
 	int status;
+	struct audio_substream_data *rtd;
 	struct audio_drv_data *adata = dev_get_drvdata(dev);
 
 	status = acp_init(adata->acp_mmio, adata->asic_type);
@@ -1145,9 +1276,8 @@ static int acp_pcm_resume(struct device *dev)
 				acp_set_sram_bank_state(adata->acp_mmio, bank,
 							true);
 		}
-		config_acp_dma(adata->acp_mmio,
-			       adata->play_i2ssp_stream->runtime->private_data,
-			       adata->asic_type);
+		rtd = adata->play_i2ssp_stream->runtime->private_data;
+		config_acp_dma(adata->acp_mmio, rtd, adata->asic_type);
 	}
 	if (adata->capture_i2ssp_stream &&
 	    adata->capture_i2ssp_stream->runtime) {
@@ -1156,9 +1286,20 @@ static int acp_pcm_resume(struct device *dev)
 				acp_set_sram_bank_state(adata->acp_mmio, bank,
 							true);
 		}
-		config_acp_dma(adata->acp_mmio,
-			       adata->capture_i2ssp_stream->runtime->private_data,
-			       adata->asic_type);
+		rtd =  adata->capture_i2ssp_stream->runtime->private_data;
+		config_acp_dma(adata->acp_mmio, rtd, adata->asic_type);
+	}
+	if (adata->asic_type != CHIP_CARRIZO) {
+		if (adata->play_i2sbt_stream &&
+		    adata->play_i2sbt_stream->runtime) {
+			rtd = adata->play_i2sbt_stream->runtime->private_data;
+			config_acp_dma(adata->acp_mmio, rtd, adata->asic_type);
+		}
+		if (adata->capture_i2sbt_stream &&
+		    adata->capture_i2sbt_stream->runtime) {
+			rtd = adata->capture_i2sbt_stream->runtime->private_data;
+			config_acp_dma(adata->acp_mmio, rtd, adata->asic_type);
+		}
 	}
 	acp_reg_write(1, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB);
 	return 0;
diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h
index 62695ed..9cd3e96 100644
--- a/sound/soc/amd/acp.h
+++ b/sound/soc/amd/acp.h
@@ -13,6 +13,8 @@
 /* Playback and Capture Offset for Stoney */
 #define ACP_ST_PLAYBACK_PTE_OFFSET	0x04
 #define ACP_ST_CAPTURE_PTE_OFFSET	0x00
+#define ACP_ST_BT_PLAYBACK_PTE_OFFSET	0x08
+#define ACP_ST_BT_CAPTURE_PTE_OFFSET	0x0c
 
 #define ACP_GARLIC_CNTL_DEFAULT			0x00000FB4
 #define ACP_ONION_CNTL_DEFAULT			0x00000FB4
@@ -46,8 +48,13 @@
 
 #define TO_ACP_I2S_1   0x2
 #define TO_ACP_I2S_2   0x4
+#define TO_BLUETOOTH   0x3
 #define FROM_ACP_I2S_1 0xa
 #define FROM_ACP_I2S_2 0xb
+#define FROM_BLUETOOTH 0xb
+
+#define I2S_SP_INSTANCE                 0x01
+#define I2S_BT_INSTANCE                 0x02
 
 #define ACP_TILE_ON_MASK                0x03
 #define ACP_TILE_OFF_MASK               0x02
@@ -68,6 +75,14 @@
 #define ACP_TO_SYSRAM_CH_NUM 14
 #define I2S_TO_ACP_DMA_CH_NUM 15
 
+/* Playback DMA Channels for I2S BT instance */
+#define SYSRAM_TO_ACP_BT_INSTANCE_CH_NUM  8
+#define ACP_TO_I2S_DMA_BT_INSTANCE_CH_NUM 9
+
+/* Capture DMA Channels for I2S BT Instance */
+#define ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM 10
+#define I2S_TO_ACP_DMA_BT_INSTANCE_CH_NUM 11
+
 #define NUM_DSCRS_PER_CHANNEL 2
 
 #define PLAYBACK_START_DMA_DESCR_CH12 0
@@ -80,9 +95,23 @@
 #define CAPTURE_START_DMA_DESCR_CH15 6
 #define CAPTURE_END_DMA_DESCR_CH15 7
 
+/* I2S BT Instance DMA Descriptors */
+#define PLAYBACK_START_DMA_DESCR_CH8 8
+#define PLAYBACK_END_DMA_DESCR_CH8 9
+#define PLAYBACK_START_DMA_DESCR_CH9 10
+#define PLAYBACK_END_DMA_DESCR_CH9 11
+
+#define CAPTURE_START_DMA_DESCR_CH10 12
+#define CAPTURE_END_DMA_DESCR_CH10 13
+#define CAPTURE_START_DMA_DESCR_CH11 14
+#define CAPTURE_END_DMA_DESCR_CH11 15
+
 #define mmACP_I2S_16BIT_RESOLUTION_EN       0x5209
 #define ACP_I2S_MIC_16BIT_RESOLUTION_EN 0x01
 #define ACP_I2S_SP_16BIT_RESOLUTION_EN	0x02
+#define ACP_I2S_BT_16BIT_RESOLUTION_EN	0x04
+#define ACP_BT_UART_PAD_SELECT_MASK	0x1
+
 enum acp_dma_priority_level {
 	/* 0x0 Specifies the DMA channel is given normal priority */
 	ACP_DMA_PRIORITY_LEVEL_NORMAL = 0x0,
@@ -95,6 +124,7 @@ struct audio_substream_data {
 	struct page *pg;
 	unsigned int order;
 	u16 num_of_pages;
+	u16 i2s_instance;
 	u16 direction;
 	u16 ch1;
 	u16 ch2;
@@ -113,10 +143,20 @@ struct audio_substream_data {
 struct audio_drv_data {
 	struct snd_pcm_substream *play_i2ssp_stream;
 	struct snd_pcm_substream *capture_i2ssp_stream;
+	struct snd_pcm_substream *play_i2sbt_stream;
+	struct snd_pcm_substream *capture_i2sbt_stream;
 	void __iomem *acp_mmio;
 	u32 asic_type;
 };
 
+/*
+ * this structure used for platform data transfer between machine driver
+ * and dma driver
+ */
+struct acp_platform_info {
+	u16 i2s_instance;
+};
+
 union acp_dma_count {
 	struct {
 	u32 low;
-- 
2.7.4