linux-kernel - [PATCH v5 4/9] ASoC: jz4740-i2s: Use FIELD_PREP() macros in hw

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Date:   Sat, 22 Oct 2022 20:13:03 +0100
From:   Aidan MacDonald <aidanmacdonald.0x0@...il.com>
To:     paul@...pouillou.net, lgirdwood@...il.com, broonie@...nel.org,
        perex@...ex.cz, tiwai@...e.com
Cc:     zhouyu@...yeetech.com, linux-mips@...r.kernel.org,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH v5 4/9] ASoC: jz4740-i2s: Use FIELD_PREP() macros in hw_params callback

Get rid of a couple of macros and improve readability by using
FIELD_PREP() and GENMASK() for the sample size setting.

Acked-by: Paul Cercueil <paul@...pouillou.net>
Reviewed-by: Paul Cercueil <paul@...pouillou.net>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@...il.com>
---
 sound/soc/jz4740/jz4740-i2s.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/sound/soc/jz4740/jz4740-i2s.c b/sound/soc/jz4740/jz4740-i2s.c
index b0bbcd025241..4767abea425f 100644
--- a/sound/soc/jz4740/jz4740-i2s.c
+++ b/sound/soc/jz4740/jz4740-i2s.c
@@ -3,6 +3,7 @@
  *  Copyright (C) 2010, Lars-Peter Clausen <lars@...afoo.de>
  */
 
+#include <linux/bitfield.h>
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
@@ -42,8 +43,8 @@
 #define JZ_AIC_CONF_SYNC_CLK_MASTER BIT(1)
 #define JZ_AIC_CONF_ENABLE BIT(0)
 
-#define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK (0x7 << 19)
-#define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK (0x7 << 16)
+#define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE GENMASK(21, 19)
+#define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE GENMASK(18, 16)
 #define JZ_AIC_CTRL_ENABLE_RX_DMA BIT(15)
 #define JZ_AIC_CTRL_ENABLE_TX_DMA BIT(14)
 #define JZ_AIC_CTRL_MONO_TO_STEREO BIT(11)
@@ -59,9 +60,6 @@
 #define JZ_AIC_CTRL_ENABLE_PLAYBACK BIT(1)
 #define JZ_AIC_CTRL_ENABLE_CAPTURE BIT(0)
 
-#define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_OFFSET 19
-#define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET  16
-
 #define JZ_AIC_I2S_FMT_DISABLE_BIT_CLK BIT(12)
 #define JZ_AIC_I2S_FMT_DISABLE_BIT_ICLK BIT(13)
 #define JZ_AIC_I2S_FMT_ENABLE_SYS_CLK BIT(4)
@@ -249,8 +247,9 @@ static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream,
 	}
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		ctrl &= ~JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK;
-		ctrl |= sample_size << JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_OFFSET;
+		ctrl &= ~JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE;
+		ctrl |= FIELD_PREP(JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE, sample_size);
+
 		if (params_channels(params) == 1)
 			ctrl |= JZ_AIC_CTRL_MONO_TO_STEREO;
 		else
@@ -258,8 +257,8 @@ static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream,
 
 		div_field = i2s->field_i2sdiv_playback;
 	} else {
-		ctrl &= ~JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK;
-		ctrl |= sample_size << JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET;
+		ctrl &= ~JZ_AIC_CTRL_INPUT_SAMPLE_SIZE;
+		ctrl |= FIELD_PREP(JZ_AIC_CTRL_INPUT_SAMPLE_SIZE, sample_size);
 
 		div_field = i2s->field_i2sdiv_capture;
 	}
-- 
2.38.1