ASoC: pcm179x: Add support for pcm1795 and pcm1796
Signed-off-by: Michael Trimarchi michael@amarulasolutions.com Tested-by: Angelo Adamo adamo.a60@gmail.com --- Changes v4 -> v5 - remove dead code
Changes v3 -> v4: - clean up compatible list - use enum type instead of pointer of int
Changes v2 -> v3: - rebase after i2c support
Changes v1 -> v2: - Use switch for support new variants - sort the compatible list
sound/soc/codecs/pcm179x-i2c.c | 6 ---- sound/soc/codecs/pcm179x-spi.c | 6 ---- sound/soc/codecs/pcm179x.c | 63 ++++++++++++++++++++++++++++++++++++++++-- sound/soc/codecs/pcm179x.h | 9 ++++-- 4 files changed, 67 insertions(+), 17 deletions(-)
diff --git a/sound/soc/codecs/pcm179x-i2c.c b/sound/soc/codecs/pcm179x-i2c.c index 4118106..609f07f 100644 --- a/sound/soc/codecs/pcm179x-i2c.c +++ b/sound/soc/codecs/pcm179x-i2c.c @@ -44,12 +44,6 @@ static int pcm179x_i2c_remove(struct i2c_client *client) return pcm179x_common_exit(&client->dev); }
-static const struct of_device_id pcm179x_of_match[] = { - { .compatible = "ti,pcm1792a", }, - { } -}; -MODULE_DEVICE_TABLE(of, pcm179x_of_match); - static const struct i2c_device_id pcm179x_i2c_ids[] = { { "pcm179x", 0 }, { } diff --git a/sound/soc/codecs/pcm179x-spi.c b/sound/soc/codecs/pcm179x-spi.c index da924d4..6ae0e4d 100644 --- a/sound/soc/codecs/pcm179x-spi.c +++ b/sound/soc/codecs/pcm179x-spi.c @@ -43,12 +43,6 @@ static int pcm179x_spi_remove(struct spi_device *spi) return pcm179x_common_exit(&spi->dev); }
-static const struct of_device_id pcm179x_of_match[] = { - { .compatible = "ti,pcm1792a", }, - { } -}; -MODULE_DEVICE_TABLE(of, pcm179x_of_match); - static const struct spi_device_id pcm179x_spi_ids[] = { { "pcm179x", 0 }, { }, diff --git a/sound/soc/codecs/pcm179x.c b/sound/soc/codecs/pcm179x.c index 06a6657..52b2d4b 100644 --- a/sound/soc/codecs/pcm179x.c +++ b/sound/soc/codecs/pcm179x.c @@ -20,6 +20,8 @@ #include <linux/slab.h> #include <linux/kernel.h> #include <linux/device.h> +#include <linux/of.h> +#include <linux/of_device.h>
#include <sound/core.h> #include <sound/pcm.h> @@ -68,12 +70,40 @@ static bool pcm179x_writeable_reg(struct device *dev, unsigned register reg) return accessible && reg != 0x16 && reg != 0x17; }
+enum pcm179x_type { + PCM1792A, + PCM1795, + PCM1796, +}; + struct pcm179x_private { struct regmap *regmap; unsigned int format; unsigned int rate; + enum pcm179x_type codec_model; };
+static int pcm179x_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_codec *codec = dai->codec; + struct pcm179x_private *priv = snd_soc_codec_get_drvdata(codec); + u64 formats = PCM1792A_FORMATS; + + switch (priv->codec_model) { + case PCM1795: + formats = PCM1795_FORMATS; + break; + default: + break; + } + + snd_pcm_hw_constraint_mask64(substream->runtime, + SNDRV_PCM_HW_PARAM_FORMAT, formats); + + return 0; +} + static int pcm179x_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int format) { @@ -112,8 +142,10 @@ static int pcm179x_hw_params(struct snd_pcm_substream *substream, switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_RIGHT_J: switch (params_width(params)) { - case 24: case 32: + val = 1; + break; + case 24: val = 2; break; case 16: @@ -125,8 +157,10 @@ static int pcm179x_hw_params(struct snd_pcm_substream *substream, break; case SND_SOC_DAIFMT_I2S: switch (params_width(params)) { - case 24: case 32: + val = 4; + break; + case 24: val = 5; break; case 16: @@ -152,6 +186,7 @@ static int pcm179x_hw_params(struct snd_pcm_substream *substream, }
static const struct snd_soc_dai_ops pcm179x_dai_ops = { + .startup = pcm179x_startup, .set_fmt = pcm179x_set_dai_fmt, .hw_params = pcm179x_hw_params, .digital_mute = pcm179x_digital_mute, @@ -190,7 +225,7 @@ static struct snd_soc_dai_driver pcm179x_dai = { .rates = SNDRV_PCM_RATE_CONTINUOUS, .rate_min = 10000, .rate_max = 200000, - .formats = PCM1792A_FORMATS, }, + .formats = PCM179X_FORMATS, }, .ops = &pcm179x_dai_ops, };
@@ -214,15 +249,37 @@ static struct snd_soc_codec_driver soc_codec_dev_pcm179x = { .num_dapm_routes = ARRAY_SIZE(pcm179x_dapm_routes), };
+const struct of_device_id pcm179x_of_match[] = { + { .compatible = "ti,pcm1792a", }, + { .compatible = "ti,pcm1795", .data = (void *)PCM1795, }, + { .compatible = "ti,pcm1796", }, + { } +}; +MODULE_DEVICE_TABLE(of, pcm179x_of_match); +EXPORT_SYMBOL_GPL(pcm179x_of_match); + int pcm179x_common_init(struct device *dev, struct regmap *regmap) { struct pcm179x_private *pcm179x; + struct device_node *np = dev->of_node; + enum pcm179x_type codec_model = PCM1792A;
pcm179x = devm_kzalloc(dev, sizeof(struct pcm179x_private), GFP_KERNEL); if (!pcm179x) return -ENOMEM;
+ if (np) { + const struct of_device_id *of_id; + + of_id = of_match_device(pcm179x_of_match, dev); + if (of_id) + codec_model = (enum pcm179x_type) of_id->data; + } + + if (codec_model) + pcm179x->codec_model = codec_model; + pcm179x->regmap = regmap; dev_set_drvdata(dev, pcm179x);
diff --git a/sound/soc/codecs/pcm179x.h b/sound/soc/codecs/pcm179x.h index 11e3312..4c00047 100644 --- a/sound/soc/codecs/pcm179x.h +++ b/sound/soc/codecs/pcm179x.h @@ -17,10 +17,15 @@ #ifndef __PCM179X_H__ #define __PCM179X_H__
-#define PCM1792A_FORMATS (SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S24_LE | \ - SNDRV_PCM_FMTBIT_S16_LE) +#define PCM179X_FORMATS (SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S24_LE | \ + SNDRV_PCM_FMTBIT_S16_LE) + +#define PCM1792A_FORMATS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE) + +#define PCM1795_FORMATS (SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S24_LE)
extern const struct regmap_config pcm179x_regmap_config; +extern const struct of_device_id pcm179x_of_match[];
int pcm179x_common_init(struct device *dev, struct regmap *regmap); int pcm179x_common_exit(struct device *dev);