linux-kernel - [PATCH 05/11] ASoC: amd: pte offset related dma driver changes

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Date:   Thu, 26 Apr 2018 16:45:51 +0530
From:   Vijendar Mukunda <Vijendar.Mukunda@....com>
To:     unlisted-recipients:; (no To-header on input)
CC:     Vijendar Mukunda <Vijendar.Mukunda@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Alex Deucher <alexander.deucher@....com>,
        Jason Clinton <jclinton@...omium.org>,
        "Akshu Agrawal" <akshu.agrawal@....com>,
        Guenter Roeck <linux@...ck-us.net>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@...a-project.org>,
        "open list" <linux-kernel@...r.kernel.org>
Subject: [PATCH 05/11] ASoC: amd: pte offset related dma driver changes

Added pte offset variable in audio_substream_data structure.
Added Stoney related PTE offset macros in acp header file.
Modified hw_params callback to assign the pte offset value
based on asic_type.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
 sound/soc/amd/acp-pcm-dma.c | 26 +++++++++++++++++++-------
 sound/soc/amd/acp.h         |  5 +++++
 2 files changed, 24 insertions(+), 7 deletions(-)

diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
index 5f34be1..cb22653 100644
--- a/sound/soc/amd/acp-pcm-dma.c
+++ b/sound/soc/amd/acp-pcm-dma.c
@@ -320,13 +320,11 @@ static void config_acp_dma(void __iomem *acp_mmio,
 			   struct audio_substream_data *rtd,
 			   u32 asic_type)
 {
-	u32 pte_offset, sram_bank;
+	u32 sram_bank;
 
-	if (rtd->direction == SNDRV_PCM_STREAM_PLAYBACK) {
-		pte_offset = ACP_PLAYBACK_PTE_OFFSET;
+	if (rtd->direction == SNDRV_PCM_STREAM_PLAYBACK)
 		sram_bank = ACP_SHARED_RAM_BANK_1_ADDRESS;
-	} else {
-		pte_offset = ACP_CAPTURE_PTE_OFFSET;
+	else {
 		switch (asic_type) {
 		case CHIP_STONEY:
 			sram_bank = ACP_SHARED_RAM_BANK_3_ADDRESS;
@@ -336,10 +334,10 @@ static void config_acp_dma(void __iomem *acp_mmio,
 		}
 	}
 	acp_pte_config(acp_mmio, rtd->pg, rtd->num_of_pages,
-		       pte_offset);
+		       rtd->pte_offset);
 	/* Configure System memory <-> ACP SRAM DMA descriptors */
 	set_acp_sysmem_dma_descriptors(acp_mmio, rtd->size,
-				       rtd->direction, pte_offset,
+				       rtd->direction, rtd->pte_offset,
 				       rtd->ch1, sram_bank,
 				       rtd->dma_dscr_idx_1, asic_type);
 	/* Configure ACP SRAM <-> I2S DMA descriptors */
@@ -788,6 +786,13 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
 	}
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		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->destination = TO_ACP_I2S_1;
@@ -797,6 +802,13 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
 		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;
+			break;
+		default:
+			rtd->pte_offset = ACP_CAPTURE_PTE_OFFSET;
+		}
 		rtd->ch1 = SYSRAM_TO_ACP_CH_NUM;
 		rtd->ch2 = ACP_TO_I2S_DMA_CH_NUM;
 		rtd->destination = FROM_ACP_I2S_1;
diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h
index 82470bc..2f48d1d 100644
--- a/sound/soc/amd/acp.h
+++ b/sound/soc/amd/acp.h
@@ -10,6 +10,10 @@
 #define ACP_PLAYBACK_PTE_OFFSET			10
 #define ACP_CAPTURE_PTE_OFFSET			0
 
+/* Playback and Capture Offset for Stoney */
+#define ACP_ST_PLAYBACK_PTE_OFFSET	0x04
+#define ACP_ST_CAPTURE_PTE_OFFSET	0x00
+
 #define ACP_GARLIC_CNTL_DEFAULT			0x00000FB4
 #define ACP_ONION_CNTL_DEFAULT			0x00000FB4
 
@@ -90,6 +94,7 @@ struct audio_substream_data {
 	u16 destination;
 	u16 dma_dscr_idx_1;
 	u16 dma_dscr_idx_2;
+	u32 pte_offset;
 	u32 byte_cnt_high_reg_offset;
 	u32 byte_cnt_low_reg_offset;
 	uint64_t size;
-- 
2.7.4