linux-kernel - [PATCH 05/10] ASoC: amd: sram bank update changes

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Date:   Wed, 2 May 2018 02:19:59 +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>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        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 05/10] ASoC: amd: sram bank update changes

Added sram bank variable to audio_substream_data structure.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
 sound/soc/amd/acp-pcm-dma.c | 20 +++++---------------
 sound/soc/amd/acp.h         | 20 ++++++++++++++------
 2 files changed, 19 insertions(+), 21 deletions(-)

diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
index 39597fb..8236116 100644
--- a/sound/soc/amd/acp-pcm-dma.c
+++ b/sound/soc/amd/acp-pcm-dma.c
@@ -320,29 +320,16 @@ static void config_acp_dma(void __iomem *acp_mmio,
 			   struct audio_substream_data *rtd,
 			   u32 asic_type)
 {
-	u32 sram_bank;
-
-	if (rtd->direction == SNDRV_PCM_STREAM_PLAYBACK)
-		sram_bank = ACP_SHARED_RAM_BANK_1_ADDRESS;
-	else {
-		switch (asic_type) {
-		case CHIP_STONEY:
-			sram_bank = ACP_SHARED_RAM_BANK_3_ADDRESS;
-			break;
-		default:
-			sram_bank = ACP_SHARED_RAM_BANK_5_ADDRESS;
-		}
-	}
 	acp_pte_config(acp_mmio, rtd->pg, rtd->num_of_pages,
 		       rtd->pte_offset);
 	/* Configure System memory <-> ACP SRAM DMA descriptors */
 	set_acp_sysmem_dma_descriptors(acp_mmio, rtd->size,
 				       rtd->direction, rtd->pte_offset,
-				       rtd->ch1, sram_bank,
+				       rtd->ch1, rtd->sram_bank,
 				       rtd->dma_dscr_idx_1, asic_type);
 	/* Configure ACP SRAM <-> I2S DMA descriptors */
 	set_acp_to_i2s_dma_descriptors(acp_mmio, rtd->size,
-				       rtd->direction, sram_bank,
+				       rtd->direction, rtd->sram_bank,
 				       rtd->destination, rtd->ch2,
 				       rtd->dma_dscr_idx_2, asic_type);
 }
@@ -795,6 +782,7 @@ static int acp_dma_hw_params(struct snd_pcm_substream *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;
@@ -805,9 +793,11 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
 		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->ch1 = ACP_TO_SYSRAM_CH_NUM;
 		rtd->ch2 = I2S_TO_ACP_DMA_CH_NUM;
diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h
index 2f48d1d..62695ed 100644
--- a/sound/soc/amd/acp.h
+++ b/sound/soc/amd/acp.h
@@ -19,12 +19,19 @@
 
 #define ACP_PHYSICAL_BASE			0x14000
 
-/* Playback SRAM address (as a destination in dma descriptor) */
-#define ACP_SHARED_RAM_BANK_1_ADDRESS		0x4002000
-
-/* Capture SRAM address (as a source in dma descriptor) */
-#define ACP_SHARED_RAM_BANK_5_ADDRESS		0x400A000
-#define ACP_SHARED_RAM_BANK_3_ADDRESS		0x4006000
+/*
+ * In case of I2S SP controller instance, Stoney uses SRAM bank 1 for
+ * playback and SRAM Bank 2 for capture where as in case of BT I2S
+ * Instance, Stoney uses SRAM Bank 3 for playback & SRAM Bank 4 will
+ * be used for capture. Carrizo uses I2S SP controller instance. SRAM Banks
+ * 1, 2, 3, 4 will be used for playback & SRAM Banks 5, 6, 7, 8 will be used
+ * for capture scenario.
+ */
+#define ACP_SRAM_BANK_1_ADDRESS		0x4002000
+#define ACP_SRAM_BANK_2_ADDRESS		0x4004000
+#define ACP_SRAM_BANK_3_ADDRESS		0x4006000
+#define ACP_SRAM_BANK_4_ADDRESS		0x4008000
+#define ACP_SRAM_BANK_5_ADDRESS		0x400A000
 
 #define ACP_DMA_RESET_TIME			10000
 #define ACP_CLOCK_EN_TIME_OUT_VALUE		0x000000FF
@@ -95,6 +102,7 @@ struct audio_substream_data {
 	u16 dma_dscr_idx_1;
 	u16 dma_dscr_idx_2;
 	u32 pte_offset;
+	u32 sram_bank;
 	u32 byte_cnt_high_reg_offset;
 	u32 byte_cnt_low_reg_offset;
 	uint64_t size;
-- 
2.7.4