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263 lines
6.2 KiB
263 lines
6.2 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* sound/soc/codecs/si476x.c -- Codec driver for SI476X chips |
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* |
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* Copyright (C) 2012 Innovative Converged Devices(ICD) |
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* Copyright (C) 2013 Andrey Smirnov |
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* |
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* Author: Andrey Smirnov <[email protected]> |
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*/ |
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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 <linux/regmap.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 ((0x7 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | \ |
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(0x7 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT)) |
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#define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK (0x7e) |
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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 const struct snd_soc_dapm_widget si476x_dapm_widgets[] = { |
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SND_SOC_DAPM_OUTPUT("LOUT"), |
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SND_SOC_DAPM_OUTPUT("ROUT"), |
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}; |
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static const struct snd_soc_dapm_route si476x_dapm_routes[] = { |
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{ "Capture", NULL, "LOUT" }, |
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{ "Capture", NULL, "ROUT" }, |
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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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struct si476x_core *core = i2c_mfd_cell_to_core(codec_dai->dev); |
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int err; |
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u16 format = 0; |
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if ((fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) != SND_SOC_DAIFMT_CBC_CFC) |
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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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si476x_core_lock(core); |
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err = snd_soc_component_update_bits(codec_dai->component, SI476X_DIGITAL_IO_OUTPUT_FORMAT, |
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SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK, |
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format); |
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si476x_core_unlock(core); |
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if (err < 0) { |
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dev_err(codec_dai->component->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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struct si476x_core *core = i2c_mfd_cell_to_core(dai->dev); |
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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->component->dev, "Rate: %d is not supported\n", rate); |
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return -EINVAL; |
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} |
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switch (params_width(params)) { |
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case 8: |
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width = SI476X_PCM_FORMAT_S8; |
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break; |
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case 16: |
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width = SI476X_PCM_FORMAT_S16_LE; |
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break; |
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case 20: |
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width = SI476X_PCM_FORMAT_S20_3LE; |
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break; |
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case 24: |
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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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si476x_core_lock(core); |
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err = snd_soc_component_write(dai->component, 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->component->dev, "Failed to set sample rate\n"); |
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goto out; |
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} |
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err = snd_soc_component_update_bits(dai->component, 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->component->dev, "Failed to set output width\n"); |
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goto out; |
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} |
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out: |
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si476x_core_unlock(core); |
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return err; |
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} |
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static const 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 int si476x_probe(struct snd_soc_component *component) |
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{ |
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snd_soc_component_init_regmap(component, |
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dev_get_regmap(component->dev->parent, NULL)); |
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return 0; |
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} |
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static const struct snd_soc_component_driver soc_component_dev_si476x = { |
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.probe = si476x_probe, |
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.dapm_widgets = si476x_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(si476x_dapm_widgets), |
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.dapm_routes = si476x_dapm_routes, |
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.num_dapm_routes = ARRAY_SIZE(si476x_dapm_routes), |
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.idle_bias_on = 1, |
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.use_pmdown_time = 1, |
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.endianness = 1, |
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}; |
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static int si476x_platform_probe(struct platform_device *pdev) |
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{ |
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return devm_snd_soc_register_component(&pdev->dev, |
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&soc_component_dev_si476x, |
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&si476x_dai, 1); |
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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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}, |
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.probe = si476x_platform_probe, |
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}; |
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module_platform_driver(si476x_platform_driver); |
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MODULE_AUTHOR("Andrey Smirnov <[email protected]>"); |
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MODULE_DESCRIPTION("ASoC Si4761/64 codec driver"); |
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MODULE_LICENSE("GPL");
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