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232 lines
5.6 KiB
232 lines
5.6 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* PCM179X ASoC codec driver |
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* |
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* Copyright (c) Amarula Solutions B.V. 2013 |
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* |
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* Michael Trimarchi <[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 <linux/kernel.h> |
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#include <linux/device.h> |
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#include <sound/core.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/initval.h> |
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#include <sound/soc.h> |
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#include <sound/tlv.h> |
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#include <linux/of.h> |
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#include "pcm179x.h" |
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#define PCM179X_DAC_VOL_LEFT 0x10 |
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#define PCM179X_DAC_VOL_RIGHT 0x11 |
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#define PCM179X_FMT_CONTROL 0x12 |
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#define PCM179X_MODE_CONTROL 0x13 |
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#define PCM179X_SOFT_MUTE PCM179X_FMT_CONTROL |
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#define PCM179X_FMT_MASK 0x70 |
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#define PCM179X_FMT_SHIFT 4 |
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#define PCM179X_MUTE_MASK 0x01 |
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#define PCM179X_MUTE_SHIFT 0 |
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#define PCM179X_ATLD_ENABLE (1 << 7) |
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static const struct reg_default pcm179x_reg_defaults[] = { |
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{ 0x10, 0xff }, |
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{ 0x11, 0xff }, |
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{ 0x12, 0x50 }, |
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{ 0x13, 0x00 }, |
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{ 0x14, 0x00 }, |
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{ 0x15, 0x01 }, |
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{ 0x16, 0x00 }, |
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{ 0x17, 0x00 }, |
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}; |
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static bool pcm179x_accessible_reg(struct device *dev, unsigned int reg) |
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{ |
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return reg >= 0x10 && reg <= 0x17; |
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} |
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static bool pcm179x_writeable_reg(struct device *dev, unsigned int reg) |
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{ |
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bool accessible; |
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accessible = pcm179x_accessible_reg(dev, reg); |
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return accessible && reg != 0x16 && reg != 0x17; |
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} |
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struct pcm179x_private { |
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struct regmap *regmap; |
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unsigned int format; |
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unsigned int rate; |
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}; |
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static int pcm179x_set_dai_fmt(struct snd_soc_dai *codec_dai, |
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unsigned int format) |
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{ |
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struct snd_soc_component *component = codec_dai->component; |
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struct pcm179x_private *priv = snd_soc_component_get_drvdata(component); |
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priv->format = format; |
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return 0; |
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} |
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static int pcm179x_mute(struct snd_soc_dai *dai, int mute, int direction) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct pcm179x_private *priv = snd_soc_component_get_drvdata(component); |
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int ret; |
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ret = regmap_update_bits(priv->regmap, PCM179X_SOFT_MUTE, |
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PCM179X_MUTE_MASK, !!mute); |
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if (ret < 0) |
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return ret; |
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return 0; |
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} |
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static int pcm179x_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 snd_soc_component *component = dai->component; |
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struct pcm179x_private *priv = snd_soc_component_get_drvdata(component); |
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int val = 0, ret; |
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priv->rate = params_rate(params); |
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switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) { |
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case SND_SOC_DAIFMT_RIGHT_J: |
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switch (params_width(params)) { |
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case 24: |
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case 32: |
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val = 2; |
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break; |
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case 16: |
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val = 0; |
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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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switch (params_width(params)) { |
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case 24: |
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case 32: |
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val = 5; |
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break; |
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case 16: |
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val = 4; |
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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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dev_err(component->dev, "Invalid DAI format\n"); |
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return -EINVAL; |
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} |
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val = val << PCM179X_FMT_SHIFT | PCM179X_ATLD_ENABLE; |
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ret = regmap_update_bits(priv->regmap, PCM179X_FMT_CONTROL, |
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PCM179X_FMT_MASK | PCM179X_ATLD_ENABLE, val); |
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if (ret < 0) |
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return ret; |
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return 0; |
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} |
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static const struct snd_soc_dai_ops pcm179x_dai_ops = { |
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.set_fmt = pcm179x_set_dai_fmt, |
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.hw_params = pcm179x_hw_params, |
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.mute_stream = pcm179x_mute, |
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.no_capture_mute = 1, |
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}; |
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static const DECLARE_TLV_DB_SCALE(pcm179x_dac_tlv, -12000, 50, 1); |
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static const struct snd_kcontrol_new pcm179x_controls[] = { |
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SOC_DOUBLE_R_RANGE_TLV("DAC Playback Volume", PCM179X_DAC_VOL_LEFT, |
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PCM179X_DAC_VOL_RIGHT, 0, 0xf, 0xff, 0, |
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pcm179x_dac_tlv), |
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SOC_SINGLE("DAC Invert Output Switch", PCM179X_MODE_CONTROL, 7, 1, 0), |
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SOC_SINGLE("DAC Rolloff Filter Switch", PCM179X_MODE_CONTROL, 1, 1, 0), |
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}; |
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static const struct snd_soc_dapm_widget pcm179x_dapm_widgets[] = { |
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SND_SOC_DAPM_OUTPUT("IOUTL+"), |
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SND_SOC_DAPM_OUTPUT("IOUTL-"), |
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SND_SOC_DAPM_OUTPUT("IOUTR+"), |
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SND_SOC_DAPM_OUTPUT("IOUTR-"), |
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}; |
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static const struct snd_soc_dapm_route pcm179x_dapm_routes[] = { |
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{ "IOUTL+", NULL, "Playback" }, |
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{ "IOUTL-", NULL, "Playback" }, |
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{ "IOUTR+", NULL, "Playback" }, |
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{ "IOUTR-", NULL, "Playback" }, |
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}; |
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static struct snd_soc_dai_driver pcm179x_dai = { |
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.name = "pcm179x-hifi", |
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.playback = { |
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.stream_name = "Playback", |
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.channels_min = 2, |
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.channels_max = 2, |
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.rates = SNDRV_PCM_RATE_CONTINUOUS, |
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.rate_min = 10000, |
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.rate_max = 200000, |
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.formats = PCM1792A_FORMATS, }, |
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.ops = &pcm179x_dai_ops, |
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}; |
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const struct regmap_config pcm179x_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = 23, |
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.reg_defaults = pcm179x_reg_defaults, |
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.num_reg_defaults = ARRAY_SIZE(pcm179x_reg_defaults), |
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.writeable_reg = pcm179x_writeable_reg, |
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.readable_reg = pcm179x_accessible_reg, |
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}; |
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EXPORT_SYMBOL_GPL(pcm179x_regmap_config); |
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static const struct snd_soc_component_driver soc_component_dev_pcm179x = { |
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.controls = pcm179x_controls, |
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.num_controls = ARRAY_SIZE(pcm179x_controls), |
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.dapm_widgets = pcm179x_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(pcm179x_dapm_widgets), |
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.dapm_routes = pcm179x_dapm_routes, |
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.num_dapm_routes = ARRAY_SIZE(pcm179x_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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.non_legacy_dai_naming = 1, |
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}; |
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int pcm179x_common_init(struct device *dev, struct regmap *regmap) |
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{ |
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struct pcm179x_private *pcm179x; |
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pcm179x = devm_kzalloc(dev, sizeof(struct pcm179x_private), |
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GFP_KERNEL); |
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if (!pcm179x) |
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return -ENOMEM; |
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pcm179x->regmap = regmap; |
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dev_set_drvdata(dev, pcm179x); |
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return devm_snd_soc_register_component(dev, |
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&soc_component_dev_pcm179x, &pcm179x_dai, 1); |
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} |
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EXPORT_SYMBOL_GPL(pcm179x_common_init); |
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MODULE_DESCRIPTION("ASoC PCM179X driver"); |
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MODULE_AUTHOR("Michael Trimarchi <[email protected]>"); |
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MODULE_LICENSE("GPL");
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