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@microchip.com>
Link: https://lore.kernel.org/r/20210803104825.2198335-1-codrin.ciubotariu@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/ad193x.c b/sound/soc/codecs/ad193x.c
index f37ab7eda615533fcf5570d0b4f1af6c479d4cab..278a55af158ba52f291cc1fef8d934ae1ebe4b1f 100644 (file)
--- 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 377854712c2047a074e954ff3a76defc9d895d0f..61f4648861d55f10af141a98cb516831d865aa3f 100644 (file)
--- 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)