linux-kernel - [PATCH 02/13] ASoC: amd: acp: refactor acp i2s clock generation code

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Date:   Sat, 21 Oct 2023 20:20:43 +0530
From:   Syed Saba Kareem <Syed.SabaKareem@....com>
To:     <broonie@...nel.org>, <alsa-devel@...a-project.org>
CC:     <Vijendar.Mukunda@....com>, <Basavaraj.Hiregoudar@....com>,
        <Sunil-kumar.Dommati@....com>, <mario.limonciello@....com>,
        <venkataprasad.potturu@....com>, <arungopal.kondaveeti@....com>,
        <mastan.katragadda@....com>, <juan.martinez@....com>,
        Syed Saba Kareem <Syed.SabaKareem@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        "Jaroslav Kysela" <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        V Sujith Kumar Reddy <vsujithkumar.reddy@....com>,
        open list <linux-kernel@...r.kernel.org>
Subject: [PATCH 02/13] ASoC: amd: acp: refactor acp i2s clock generation code

Refactor acp i2s LRCLK,BCLK generation code and move to commnon file.

Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@....com>
---
 sound/soc/amd/acp/acp-i2s.c | 32 ++++++++++++++++++++++++++++++
 sound/soc/amd/acp/amd.h     | 39 -------------------------------------
 2 files changed, 32 insertions(+), 39 deletions(-)

diff --git a/sound/soc/amd/acp/acp-i2s.c b/sound/soc/amd/acp/acp-i2s.c
index df350014966a..59d3a499771a 100644
--- a/sound/soc/amd/acp/acp-i2s.c
+++ b/sound/soc/amd/acp/acp-i2s.c
@@ -20,10 +20,42 @@
 #include <sound/soc.h>
 #include <sound/soc-dai.h>
 #include <linux/dma-mapping.h>
+#include <linux/bitfield.h>
 
 #include "amd.h"
 
 #define DRV_NAME "acp_i2s_playcap"
+#define	I2S_MASTER_MODE_ENABLE		1
+#define	I2S_MODE_ENABLE			0
+#define	I2S_FORMAT_MODE			GENMASK(1, 1)
+#define	LRCLK_DIV_FIELD			GENMASK(10, 2)
+#define	BCLK_DIV_FIELD			GENMASK(23, 11)
+
+static inline void acp_set_i2s_clk(struct acp_dev_data *adata, int dai_id)
+{
+	u32 i2s_clk_reg, val;
+
+	switch (dai_id) {
+	case I2S_SP_INSTANCE:
+		i2s_clk_reg = ACP_I2STDM0_MSTRCLKGEN;
+		break;
+	case I2S_BT_INSTANCE:
+		i2s_clk_reg = ACP_I2STDM1_MSTRCLKGEN;
+		break;
+	case I2S_HS_INSTANCE:
+		i2s_clk_reg = ACP_I2STDM2_MSTRCLKGEN;
+		break;
+	default:
+		i2s_clk_reg = ACP_I2STDM0_MSTRCLKGEN;
+		break;
+	}
+
+	val  = I2S_MASTER_MODE_ENABLE;
+	val |= I2S_MODE_ENABLE & BIT(1);
+	val |= FIELD_PREP(LRCLK_DIV_FIELD, adata->lrclk_div);
+	val |= FIELD_PREP(BCLK_DIV_FIELD, adata->bclk_div);
+	writel(val, adata->acp_base + i2s_clk_reg);
+}
 
 static int acp_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
 			   unsigned int fmt)
diff --git a/sound/soc/amd/acp/amd.h b/sound/soc/amd/acp/amd.h
index 487eefa5985f..87d1e1f7d6b6 100644
--- a/sound/soc/amd/acp/amd.h
+++ b/sound/soc/amd/acp/amd.h
@@ -188,17 +188,6 @@ struct acp_dev_data {
 	u32 xfer_rx_resolution[3];
 };
 
-union acp_i2stdm_mstrclkgen {
-	struct {
-		u32 i2stdm_master_mode : 1;
-		u32 i2stdm_format_mode : 1;
-		u32 i2stdm_lrclk_div_val : 9;
-		u32 i2stdm_bclk_div_val : 11;
-		u32:10;
-	} bitfields, bits;
-	u32  u32_all;
-};
-
 extern const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops;
 extern const struct snd_soc_dai_ops acp_dmic_dai_ops;
 
@@ -276,32 +265,4 @@ static inline u64 acp_get_byte_count(struct acp_dev_data *adata, int dai_id, int
 POINTER_RETURN_BYTES:
 	return byte_count;
 }
-
-static inline void acp_set_i2s_clk(struct acp_dev_data *adata, int dai_id)
-{
-	union acp_i2stdm_mstrclkgen mclkgen;
-	u32 master_reg;
-
-	switch (dai_id) {
-	case I2S_SP_INSTANCE:
-		master_reg = ACP_I2STDM0_MSTRCLKGEN;
-		break;
-	case I2S_BT_INSTANCE:
-		master_reg = ACP_I2STDM1_MSTRCLKGEN;
-		break;
-	case I2S_HS_INSTANCE:
-		master_reg = ACP_I2STDM2_MSTRCLKGEN;
-		break;
-	default:
-		master_reg = ACP_I2STDM0_MSTRCLKGEN;
-		break;
-	}
-
-	mclkgen.bits.i2stdm_master_mode = 0x1;
-	mclkgen.bits.i2stdm_format_mode = 0x00;
-
-	mclkgen.bits.i2stdm_bclk_div_val = adata->bclk_div;
-	mclkgen.bits.i2stdm_lrclk_div_val = adata->lrclk_div;
-	writel(mclkgen.u32_all, adata->acp_base + master_reg);
-}
 #endif
-- 
2.25.1