Add a codec driver for SI476X MFD
This commit add a sound codec driver for Silicon Laboratories 476x series of AM/FM radio chips. Signed-off-by: Andrey Smirnov <andrey.smirnov@convergeddevices.net> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Andrey Smirnov
Mark Brown
Родитель
ddffeb8c4d
Коммит
330345ebdb
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@ -54,6 +54,7 @@ config SND_SOC_ALL_CODECS
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select SND_SOC_PCM3008
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select SND_SOC_RT5631 if I2C
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select SND_SOC_SGTL5000 if I2C
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select SND_SOC_SI476X if MFD_SI476X_CORE
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select SND_SOC_SN95031 if INTEL_SCU_IPC
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select SND_SOC_SPDIF
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select SND_SOC_SSM2602 if SND_SOC_I2C_AND_SPI
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@ -277,6 +278,9 @@ config SND_SOC_RT5631
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config SND_SOC_SGTL5000
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tristate
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config SND_SOC_SI476X
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tristate
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config SND_SOC_SIGMADSP
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tristate
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select CRC32
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@ -45,6 +45,7 @@ snd-soc-sgtl5000-objs := sgtl5000.o
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snd-soc-alc5623-objs := alc5623.o
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snd-soc-alc5632-objs := alc5632.o
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snd-soc-sigmadsp-objs := sigmadsp.o
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snd-soc-si476x-objs := si476x.o
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snd-soc-sn95031-objs := sn95031.o
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snd-soc-spdif-tx-objs := spdif_transciever.o
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snd-soc-spdif-rx-objs := spdif_receiver.o
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@ -164,6 +165,7 @@ obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.o
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obj-$(CONFIG_SND_SOC_RT5631) += snd-soc-rt5631.o
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obj-$(CONFIG_SND_SOC_SGTL5000) += snd-soc-sgtl5000.o
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obj-$(CONFIG_SND_SOC_SIGMADSP) += snd-soc-sigmadsp.o
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obj-$(CONFIG_SND_SOC_SI476X) += snd-soc-si476x.o
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obj-$(CONFIG_SND_SOC_SN95031) +=snd-soc-sn95031.o
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obj-$(CONFIG_SND_SOC_SPDIF) += snd-soc-spdif-rx.o snd-soc-spdif-tx.o
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obj-$(CONFIG_SND_SOC_SSM2602) += snd-soc-ssm2602.o
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@ -0,0 +1,255 @@
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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#include <linux/i2c.h>
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#include <linux/mfd/si476x-core.h>
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enum si476x_audio_registers {
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SI476X_DIGITAL_IO_OUTPUT_FORMAT = 0x0203,
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SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE = 0x0202,
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};
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enum si476x_digital_io_output_format {
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SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT = 11,
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SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT = 8,
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};
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#define SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK ((0b111 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | \
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(0b111 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT))
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#define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK (0b1111110)
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enum si476x_daudio_formats {
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SI476X_DAUDIO_MODE_I2S = (0x0 << 1),
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SI476X_DAUDIO_MODE_DSP_A = (0x6 << 1),
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SI476X_DAUDIO_MODE_DSP_B = (0x7 << 1),
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SI476X_DAUDIO_MODE_LEFT_J = (0x8 << 1),
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SI476X_DAUDIO_MODE_RIGHT_J = (0x9 << 1),
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SI476X_DAUDIO_MODE_IB = (1 << 5),
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SI476X_DAUDIO_MODE_IF = (1 << 6),
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};
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enum si476x_pcm_format {
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SI476X_PCM_FORMAT_S8 = 2,
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SI476X_PCM_FORMAT_S16_LE = 4,
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SI476X_PCM_FORMAT_S20_3LE = 5,
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SI476X_PCM_FORMAT_S24_LE = 6,
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};
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static unsigned int si476x_codec_read(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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int err;
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struct si476x_core *core = codec->control_data;
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si476x_core_lock(core);
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err = si476x_core_cmd_get_property(core, reg);
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si476x_core_unlock(core);
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return err;
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}
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static int si476x_codec_write(struct snd_soc_codec *codec,
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unsigned int reg, unsigned int val)
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{
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int err;
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struct si476x_core *core = codec->control_data;
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si476x_core_lock(core);
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err = si476x_core_cmd_set_property(core, reg, val);
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si476x_core_unlock(core);
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return err;
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}
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static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int fmt)
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{
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int err;
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u16 format = 0;
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if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
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return -EINVAL;
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_DSP_A:
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format |= SI476X_DAUDIO_MODE_DSP_A;
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break;
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case SND_SOC_DAIFMT_DSP_B:
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format |= SI476X_DAUDIO_MODE_DSP_B;
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break;
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case SND_SOC_DAIFMT_I2S:
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format |= SI476X_DAUDIO_MODE_I2S;
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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format |= SI476X_DAUDIO_MODE_RIGHT_J;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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format |= SI476X_DAUDIO_MODE_LEFT_J;
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break;
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default:
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return -EINVAL;
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}
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_DSP_A:
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case SND_SOC_DAIFMT_DSP_B:
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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break;
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case SND_SOC_DAIFMT_IB_NF:
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format |= SI476X_DAUDIO_MODE_IB;
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break;
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default:
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return -EINVAL;
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}
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break;
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case SND_SOC_DAIFMT_I2S:
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case SND_SOC_DAIFMT_RIGHT_J:
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case SND_SOC_DAIFMT_LEFT_J:
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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break;
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case SND_SOC_DAIFMT_IB_IF:
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format |= SI476X_DAUDIO_MODE_IB |
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SI476X_DAUDIO_MODE_IF;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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format |= SI476X_DAUDIO_MODE_IB;
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break;
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case SND_SOC_DAIFMT_NB_IF:
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format |= SI476X_DAUDIO_MODE_IF;
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break;
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default:
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return -EINVAL;
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}
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break;
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default:
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return -EINVAL;
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}
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err = snd_soc_update_bits(codec_dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
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SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK,
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format);
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if (err < 0) {
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dev_err(codec_dai->codec->dev, "Failed to set output format\n");
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return err;
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}
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return 0;
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}
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static int si476x_codec_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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int rate, width, err;
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rate = params_rate(params);
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if (rate < 32000 || rate > 48000) {
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dev_err(dai->codec->dev, "Rate: %d is not supported\n", rate);
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return -EINVAL;
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}
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S8:
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width = SI476X_PCM_FORMAT_S8;
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case SNDRV_PCM_FORMAT_S16_LE:
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width = SI476X_PCM_FORMAT_S16_LE;
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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width = SI476X_PCM_FORMAT_S20_3LE;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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width = SI476X_PCM_FORMAT_S24_LE;
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break;
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default:
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return -EINVAL;
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}
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err = snd_soc_write(dai->codec, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE,
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rate);
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if (err < 0) {
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dev_err(dai->codec->dev, "Failed to set sample rate\n");
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return err;
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}
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err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
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SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK,
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(width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) |
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(width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT));
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if (err < 0) {
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dev_err(dai->codec->dev, "Failed to set output width\n");
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return err;
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}
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return 0;
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}
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static int si476x_codec_probe(struct snd_soc_codec *codec)
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{
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codec->control_data = i2c_mfd_cell_to_core(codec->dev);
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return 0;
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}
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static struct snd_soc_dai_ops si476x_dai_ops = {
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.hw_params = si476x_codec_hw_params,
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.set_fmt = si476x_codec_set_dai_fmt,
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};
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static struct snd_soc_dai_driver si476x_dai = {
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.name = "si476x-codec",
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.capture = {
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.stream_name = "Capture",
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.channels_min = 2,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_32000 |
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SNDRV_PCM_RATE_44100 |
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SNDRV_PCM_RATE_48000,
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.formats = SNDRV_PCM_FMTBIT_S8 |
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SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S20_3LE |
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SNDRV_PCM_FMTBIT_S24_LE
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},
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.ops = &si476x_dai_ops,
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};
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static struct snd_soc_codec_driver soc_codec_dev_si476x = {
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.probe = si476x_codec_probe,
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.read = si476x_codec_read,
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.write = si476x_codec_write,
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};
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static int __devinit si476x_platform_probe(struct platform_device *pdev)
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{
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return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_si476x,
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&si476x_dai, 1);
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}
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static int __devexit si476x_platform_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_codec(&pdev->dev);
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return 0;
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}
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MODULE_ALIAS("platform:si476x-codec");
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static struct platform_driver si476x_platform_driver = {
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.driver = {
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.name = "si476x-codec",
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.owner = THIS_MODULE,
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},
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.probe = si476x_platform_probe,
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.remove = __devexit_p(si476x_platform_remove),
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};
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module_platform_driver(si476x_platform_driver);
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MODULE_AUTHOR("Andrey Smirnov <andrey.smirnov@convergeddevices.net>");
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MODULE_DESCRIPTION("ASoC Si4761/64 codec driver");
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MODULE_LICENSE("GPL");
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