[PATCH v3 6/6] Add a codec driver for SI476X MFD
From: Andrey Smirnov
Date: Tue Oct 23 2012 - 14:44:35 EST
This commit add a sound codec driver for Silicon Laboratories 476x
series of AM/FM radio chips.
Signed-off-by: Andrey Smirnov <andrey.smirnov@xxxxxxxxxxxxxxxxxxxx>
---
sound/soc/codecs/Kconfig | 4 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/si476x.c | 259 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 265 insertions(+)
create mode 100644 sound/soc/codecs/si476x.c
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 9f8e859..37b2911 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -53,6 +53,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_PCM3008
select SND_SOC_RT5631 if I2C
select SND_SOC_SGTL5000 if I2C
+ select SND_SOC_SI476X if MFD_SI476X_CORE
select SND_SOC_SN95031 if INTEL_SCU_IPC
select SND_SOC_SPDIF
select SND_SOC_SSM2602 if SND_SOC_I2C_AND_SPI
@@ -272,6 +273,9 @@ config SND_SOC_RT5631
config SND_SOC_SGTL5000
tristate
+config SND_SOC_SI476X
+ tristate
+
config SND_SOC_SIGMADSP
tristate
select CRC32
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 34148bb..d9ed4e4 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -44,6 +44,7 @@ snd-soc-sgtl5000-objs := sgtl5000.o
snd-soc-alc5623-objs := alc5623.o
snd-soc-alc5632-objs := alc5632.o
snd-soc-sigmadsp-objs := sigmadsp.o
+snd-soc-si476x-objs := si476x.o
snd-soc-sn95031-objs := sn95031.o
snd-soc-spdif-tx-objs := spdif_transciever.o
snd-soc-spdif-rx-objs := spdif_receiver.o
@@ -161,6 +162,7 @@ obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.o
obj-$(CONFIG_SND_SOC_RT5631) += snd-soc-rt5631.o
obj-$(CONFIG_SND_SOC_SGTL5000) += snd-soc-sgtl5000.o
obj-$(CONFIG_SND_SOC_SIGMADSP) += snd-soc-sigmadsp.o
+obj-$(CONFIG_SND_SOC_SI476X) += snd-soc-si476x.o
obj-$(CONFIG_SND_SOC_SN95031) +=snd-soc-sn95031.o
obj-$(CONFIG_SND_SOC_SPDIF) += snd-soc-spdif-rx.o snd-soc-spdif-tx.o
obj-$(CONFIG_SND_SOC_SSM2602) += snd-soc-ssm2602.o
diff --git a/sound/soc/codecs/si476x.c b/sound/soc/codecs/si476x.c
new file mode 100644
index 0000000..1f34913
--- /dev/null
+++ b/sound/soc/codecs/si476x.c
@@ -0,0 +1,259 @@
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+
+#include <linux/i2c.h>
+
+#include <linux/mfd/si476x-core.h>
+
+enum si476x_audio_registers {
+ SI476X_DIGITAL_IO_OUTPUT_FORMAT = 0x0203,
+ SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE = 0x0202,
+};
+
+enum si476x_digital_io_output_format {
+ SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT = 11,
+ SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT = 8,
+};
+
+#define SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK ((0b111 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | \
+ (0b111 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT))
+#define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK (0b1111110)
+
+enum si476x_daudio_formats {
+ SI476X_DAUDIO_MODE_I2S = (0x0 << 1),
+ SI476X_DAUDIO_MODE_DSP_A = (0x6 << 1),
+ SI476X_DAUDIO_MODE_DSP_B = (0x7 << 1),
+ SI476X_DAUDIO_MODE_LEFT_J = (0x8 << 1),
+ SI476X_DAUDIO_MODE_RIGHT_J = (0x9 << 1),
+
+ SI476X_DAUDIO_MODE_IB = (1 << 5),
+ SI476X_DAUDIO_MODE_IF = (1 << 6),
+};
+
+enum si476x_pcm_format {
+ SI476X_PCM_FORMAT_S8 = 2,
+ SI476X_PCM_FORMAT_S16_LE = 4,
+ SI476X_PCM_FORMAT_S20_3LE = 5,
+ SI476X_PCM_FORMAT_S24_LE = 6,
+};
+
+static unsigned int si476x_codec_read(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ int err;
+ unsigned int val;
+ struct si476x_core *core = codec->control_data;
+
+ si476x_core_lock(core);
+ err = regmap_read(core->regmap, reg, &val);
+ si476x_core_unlock(core);
+
+ if (err < 0)
+ return err;
+
+ return val;
+}
+
+static int si476x_codec_write(struct snd_soc_codec *codec,
+ unsigned int reg, unsigned int val)
+{
+ int err;
+ struct si476x_core *core = codec->control_data;
+
+ si476x_core_lock(core);
+ err = regmap_write(core->regmap, reg, val);
+ si476x_core_unlock(core);
+
+ return err;
+}
+
+static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ int err;
+ u16 format = 0;
+
+ if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
+ return -EINVAL;
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ format |= SI476X_DAUDIO_MODE_DSP_A;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ format |= SI476X_DAUDIO_MODE_DSP_B;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ format |= SI476X_DAUDIO_MODE_I2S;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ format |= SI476X_DAUDIO_MODE_RIGHT_J;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ format |= SI476X_DAUDIO_MODE_LEFT_J;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ case SND_SOC_DAIFMT_DSP_B:
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ format |= SI476X_DAUDIO_MODE_IB;
+ break;
+ default:
+ return -EINVAL;
+ }
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ case SND_SOC_DAIFMT_RIGHT_J:
+ case SND_SOC_DAIFMT_LEFT_J:
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ format |= SI476X_DAUDIO_MODE_IB |
+ SI476X_DAUDIO_MODE_IF;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ format |= SI476X_DAUDIO_MODE_IB;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ format |= SI476X_DAUDIO_MODE_IF;
+ break;
+ default:
+ return -EINVAL;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ err = snd_soc_update_bits(codec_dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
+ SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK,
+ format);
+ if (err < 0) {
+ dev_err(codec_dai->codec->dev, "Failed to set output format\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static int si476x_codec_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ int rate, width, err;
+
+ rate = params_rate(params);
+ if (rate < 32000 || rate > 48000) {
+ dev_err(dai->codec->dev, "Rate: %d is not supported\n", rate);
+ return -EINVAL;
+ }
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S8:
+ width = SI476X_PCM_FORMAT_S8;
+ case SNDRV_PCM_FORMAT_S16_LE:
+ width = SI476X_PCM_FORMAT_S16_LE;
+ break;
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ width = SI476X_PCM_FORMAT_S20_3LE;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ width = SI476X_PCM_FORMAT_S24_LE;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ err = snd_soc_write(dai->codec, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE,
+ rate);
+ if (err < 0) {
+ dev_err(dai->codec->dev, "Failed to set sample rate\n");
+ return err;
+ }
+
+ err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
+ SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK,
+ (width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) |
+ (width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT));
+ if (err < 0) {
+ dev_err(dai->codec->dev, "Failed to set output width\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static int si476x_codec_probe(struct snd_soc_codec *codec)
+{
+ codec->control_data = i2c_mfd_cell_to_core(codec->dev);
+ return 0;
+}
+
+static struct snd_soc_dai_ops si476x_dai_ops = {
+ .hw_params = si476x_codec_hw_params,
+ .set_fmt = si476x_codec_set_dai_fmt,
+};
+
+static struct snd_soc_dai_driver si476x_dai = {
+ .name = "si476x-codec",
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+
+ .rates = SNDRV_PCM_RATE_32000 |
+ SNDRV_PCM_RATE_44100 |
+ SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S20_3LE |
+ SNDRV_PCM_FMTBIT_S24_LE
+ },
+ .ops = &si476x_dai_ops,
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_si476x = {
+ .probe = si476x_codec_probe,
+ .read = si476x_codec_read,
+ .write = si476x_codec_write,
+};
+
+static int __devinit si476x_platform_probe(struct platform_device *pdev)
+{
+ return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_si476x,
+ &si476x_dai, 1);
+}
+
+static int __devexit si476x_platform_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_codec(&pdev->dev);
+ return 0;
+}
+
+MODULE_ALIAS("platform:si476x-codec");
+
+static struct platform_driver si476x_platform_driver = {
+ .driver = {
+ .name = "si476x-codec",
+ .owner = THIS_MODULE,
+ },
+ .probe = si476x_platform_probe,
+ .remove = __devexit_p(si476x_platform_remove),
+};
+module_platform_driver(si476x_platform_driver);
+
+MODULE_AUTHOR("Andrey Smirnov <andrey.smirnov@xxxxxxxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("ASoC Si4761/64 codec driver");
+MODULE_LICENSE("GPL");
--
1.7.10.4
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