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Message-ID: <20210803104825.2198335-1-codrin.ciubotariu@microchip.com>
Date: Tue, 3 Aug 2021 13:48:25 +0300
From: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
To: <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>
CC: <lars@...afoo.de>, <nuno.sa@...log.com>, <lgirdwood@...il.com>,
<broonie@...nel.org>, <perex@...ex.cz>, <tiwai@...e.com>,
<nicolas.ferre@...rochip.com>,
Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
Subject: [PATCH] ASoC: codecs: ad193x: add support for 96kHz and 192kHz playback rates
ad193x devices support 96KHz and 192KHz sampling rates, when PLL/MCLK is
referenced to 48kHz.
Tested on ad1934.
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
---
sound/soc/codecs/ad193x.c | 30 ++++++++++++++++++++++++++++--
sound/soc/codecs/ad193x.h | 4 ++++
2 files changed, 32 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/ad193x.c b/sound/soc/codecs/ad193x.c
index f37ab7eda615..278a55af158b 100644
--- a/sound/soc/codecs/ad193x.c
+++ b/sound/soc/codecs/ad193x.c
@@ -316,6 +316,13 @@ static int ad193x_hw_params(struct snd_pcm_substream *substream,
int word_len = 0, master_rate = 0;
struct snd_soc_component *component = dai->component;
struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
+ bool is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+ u8 dacc0;
+
+ dev_dbg(dai->dev, "%s() rate=%u format=%#x width=%u channels=%u\n",
+ __func__, params_rate(params), params_format(params),
+ params_width(params), params_channels(params));
+
/* bit size */
switch (params_width(params)) {
@@ -346,6 +353,25 @@ static int ad193x_hw_params(struct snd_pcm_substream *substream,
break;
}
+ if (is_playback) {
+ switch (params_rate(params)) {
+ case 48000:
+ dacc0 = AD193X_DAC_SR_48;
+ break;
+ case 96000:
+ dacc0 = AD193X_DAC_SR_96;
+ break;
+ case 192000:
+ dacc0 = AD193X_DAC_SR_192;
+ break;
+ default:
+ dev_err(dai->dev, "invalid sampling rate: %d\n", params_rate(params));
+ return -EINVAL;
+ }
+
+ regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL0, AD193X_DAC_SR_MASK, dacc0);
+ }
+
regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
AD193X_PLL_INPUT_MASK, master_rate);
@@ -385,7 +411,7 @@ static struct snd_soc_dai_driver ad193x_dai = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 8,
- .rates = SNDRV_PCM_RATE_48000,
+ .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
},
@@ -407,7 +433,7 @@ static struct snd_soc_dai_driver ad193x_no_adc_dai = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 8,
- .rates = SNDRV_PCM_RATE_48000,
+ .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
},
diff --git a/sound/soc/codecs/ad193x.h b/sound/soc/codecs/ad193x.h
index 377854712c20..61f4648861d5 100644
--- a/sound/soc/codecs/ad193x.h
+++ b/sound/soc/codecs/ad193x.h
@@ -37,6 +37,10 @@ int ad193x_probe(struct device *dev, struct regmap *regmap,
#define AD193X_PLL_CLK_SRC_MCLK (1 << 1)
#define AD193X_DAC_CTRL0 0x02
#define AD193X_DAC_POWERDOWN 0x01
+#define AD193X_DAC_SR_MASK 0x06
+#define AD193X_DAC_SR_48 (0 << 1)
+#define AD193X_DAC_SR_96 (1 << 1)
+#define AD193X_DAC_SR_192 (2 << 1)
#define AD193X_DAC_SERFMT_MASK 0xC0
#define AD193X_DAC_SERFMT_STEREO (0 << 6)
#define AD193X_DAC_SERFMT_TDM (1 << 6)
--
2.30.2
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