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SubjectRe: [PATCH 06/11] ASoC: jz4740-i2s: Use FIELD_PREP() macros in hw_params callback


Le mer., juil. 6 2022 at 22:13:25 +0100, Aidan MacDonald
<aidanmacdonald.0x0@gmail.com> a écrit :
> Get rid of a couple of macros and improve readability by using
> FIELD_PREP() and GENMASK() for the sample size setting.
>
> Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>

Acked-by: Paul Cercueil <paul@crapouillou.net>

Cheers,
-Paul

> ---
> 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 8bb9449d13d3..3c3cf78bf848 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@metafoo.de>
> */
>
> +#include <linux/bitfield.h>
> #include <linux/init.h>
> #include <linux/io.h>
> #include <linux/kernel.h>
> @@ -49,8 +50,8 @@
> #define JZ4760_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET 24
> #define JZ4760_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET 16
>
> -#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)
> @@ -65,9 +66,6 @@
> #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)
> @@ -245,8 +243,9 @@ 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
> @@ -254,8 +253,8 @@ 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;
> }
> --
> 2.35.1
>


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