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432 lines
11 KiB
432 lines
11 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* max98371.c -- ALSA SoC Stereo MAX98371 driver |
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* |
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* Copyright 2015-16 Maxim Integrated Products |
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*/ |
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#include <linux/i2c.h> |
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#include <linux/module.h> |
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#include <linux/regmap.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/tlv.h> |
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#include "max98371.h" |
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static const char *const monomix_text[] = { |
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"Left", "Right", "LeftRightDiv2", |
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}; |
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static const char *const hpf_cutoff_txt[] = { |
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"Disable", "DC Block", "50Hz", |
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"100Hz", "200Hz", "400Hz", "800Hz", |
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}; |
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static SOC_ENUM_SINGLE_DECL(max98371_monomix, MAX98371_MONOMIX_CFG, 0, |
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monomix_text); |
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static SOC_ENUM_SINGLE_DECL(max98371_hpf_cutoff, MAX98371_HPF, 0, |
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hpf_cutoff_txt); |
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static const DECLARE_TLV_DB_RANGE(max98371_dht_min_gain, |
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0, 1, TLV_DB_SCALE_ITEM(537, 66, 0), |
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2, 3, TLV_DB_SCALE_ITEM(677, 82, 0), |
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4, 5, TLV_DB_SCALE_ITEM(852, 104, 0), |
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6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0), |
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8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0), |
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10, 11, TLV_DB_SCALE_ITEM(1699, 101, 0), |
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); |
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static const DECLARE_TLV_DB_RANGE(max98371_dht_max_gain, |
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0, 1, TLV_DB_SCALE_ITEM(537, 66, 0), |
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2, 3, TLV_DB_SCALE_ITEM(677, 82, 0), |
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4, 5, TLV_DB_SCALE_ITEM(852, 104, 0), |
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6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0), |
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8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0), |
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10, 11, TLV_DB_SCALE_ITEM(1699, 208, 0), |
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); |
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static const DECLARE_TLV_DB_RANGE(max98371_dht_rot_gain, |
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0, 1, TLV_DB_SCALE_ITEM(-50, -50, 0), |
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2, 6, TLV_DB_SCALE_ITEM(-100, -100, 0), |
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7, 8, TLV_DB_SCALE_ITEM(-800, -200, 0), |
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9, 11, TLV_DB_SCALE_ITEM(-1200, -300, 0), |
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12, 13, TLV_DB_SCALE_ITEM(-2000, -200, 0), |
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14, 15, TLV_DB_SCALE_ITEM(-2500, -500, 0), |
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); |
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static const struct reg_default max98371_reg[] = { |
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{ 0x01, 0x00 }, |
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{ 0x02, 0x00 }, |
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{ 0x03, 0x00 }, |
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{ 0x04, 0x00 }, |
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{ 0x05, 0x00 }, |
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{ 0x06, 0x00 }, |
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{ 0x07, 0x00 }, |
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{ 0x08, 0x00 }, |
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{ 0x09, 0x00 }, |
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{ 0x0A, 0x00 }, |
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{ 0x10, 0x06 }, |
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{ 0x11, 0x08 }, |
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{ 0x14, 0x80 }, |
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{ 0x15, 0x00 }, |
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{ 0x16, 0x00 }, |
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{ 0x18, 0x00 }, |
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{ 0x19, 0x00 }, |
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{ 0x1C, 0x00 }, |
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{ 0x1D, 0x00 }, |
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{ 0x1E, 0x00 }, |
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{ 0x1F, 0x00 }, |
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{ 0x20, 0x00 }, |
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{ 0x21, 0x00 }, |
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{ 0x22, 0x00 }, |
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{ 0x23, 0x00 }, |
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{ 0x24, 0x00 }, |
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{ 0x25, 0x00 }, |
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{ 0x26, 0x00 }, |
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{ 0x27, 0x00 }, |
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{ 0x28, 0x00 }, |
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{ 0x29, 0x00 }, |
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{ 0x2A, 0x00 }, |
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{ 0x2B, 0x00 }, |
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{ 0x2C, 0x00 }, |
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{ 0x2D, 0x00 }, |
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{ 0x2E, 0x0B }, |
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{ 0x31, 0x00 }, |
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{ 0x32, 0x18 }, |
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{ 0x33, 0x00 }, |
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{ 0x34, 0x00 }, |
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{ 0x36, 0x00 }, |
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{ 0x37, 0x00 }, |
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{ 0x38, 0x00 }, |
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{ 0x39, 0x00 }, |
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{ 0x3A, 0x00 }, |
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{ 0x3B, 0x00 }, |
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{ 0x3C, 0x00 }, |
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{ 0x3D, 0x00 }, |
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{ 0x3E, 0x00 }, |
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{ 0x3F, 0x00 }, |
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{ 0x40, 0x00 }, |
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{ 0x41, 0x00 }, |
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{ 0x42, 0x00 }, |
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{ 0x43, 0x00 }, |
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{ 0x4A, 0x00 }, |
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{ 0x4B, 0x00 }, |
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{ 0x4C, 0x00 }, |
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{ 0x4D, 0x00 }, |
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{ 0x4E, 0x00 }, |
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{ 0x50, 0x00 }, |
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{ 0x51, 0x00 }, |
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{ 0x55, 0x00 }, |
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{ 0x58, 0x00 }, |
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{ 0x59, 0x00 }, |
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{ 0x5C, 0x00 }, |
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{ 0xFF, 0x43 }, |
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}; |
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static bool max98371_volatile_register(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case MAX98371_IRQ_CLEAR1: |
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case MAX98371_IRQ_CLEAR2: |
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case MAX98371_IRQ_CLEAR3: |
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case MAX98371_VERSION: |
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return true; |
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default: |
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return false; |
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} |
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} |
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static bool max98371_readable_register(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case MAX98371_SOFT_RESET: |
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return false; |
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default: |
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return true; |
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} |
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}; |
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static const DECLARE_TLV_DB_RANGE(max98371_gain_tlv, |
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0, 7, TLV_DB_SCALE_ITEM(0, 50, 0), |
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8, 10, TLV_DB_SCALE_ITEM(400, 100, 0) |
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); |
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static const DECLARE_TLV_DB_SCALE(digital_tlv, -6300, 50, 1); |
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static const struct snd_kcontrol_new max98371_snd_controls[] = { |
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SOC_SINGLE_TLV("Speaker Volume", MAX98371_GAIN, |
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MAX98371_GAIN_SHIFT, (1<<MAX98371_GAIN_WIDTH)-1, 0, |
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max98371_gain_tlv), |
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SOC_SINGLE_TLV("Digital Volume", MAX98371_DIGITAL_GAIN, 0, |
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(1<<MAX98371_DIGITAL_GAIN_WIDTH)-1, 1, digital_tlv), |
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SOC_SINGLE_TLV("Speaker DHT Max Volume", MAX98371_GAIN, |
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0, (1<<MAX98371_DHT_MAX_WIDTH)-1, 0, |
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max98371_dht_max_gain), |
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SOC_SINGLE_TLV("Speaker DHT Min Volume", MAX98371_DHT_GAIN, |
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0, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0, |
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max98371_dht_min_gain), |
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SOC_SINGLE_TLV("Speaker DHT Rotation Volume", MAX98371_DHT_GAIN, |
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0, (1<<MAX98371_DHT_ROT_WIDTH)-1, 0, |
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max98371_dht_rot_gain), |
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SOC_SINGLE("DHT Attack Step", MAX98371_DHT, MAX98371_DHT_STEP, 3, 0), |
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SOC_SINGLE("DHT Attack Rate", MAX98371_DHT, 0, 7, 0), |
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SOC_ENUM("Monomix Select", max98371_monomix), |
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SOC_ENUM("HPF Cutoff", max98371_hpf_cutoff), |
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}; |
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static int max98371_dai_set_fmt(struct snd_soc_dai *codec_dai, |
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unsigned int fmt) |
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{ |
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struct snd_soc_component *component = codec_dai->component; |
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struct max98371_priv *max98371 = snd_soc_component_get_drvdata(component); |
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unsigned int val = 0; |
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switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { |
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case SND_SOC_DAIFMT_CBC_CFC: |
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break; |
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default: |
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dev_err(component->dev, "DAI clock mode unsupported"); |
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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_I2S: |
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val |= 0; |
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break; |
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case SND_SOC_DAIFMT_RIGHT_J: |
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val |= MAX98371_DAI_RIGHT; |
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break; |
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case SND_SOC_DAIFMT_LEFT_J: |
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val |= MAX98371_DAI_LEFT; |
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break; |
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default: |
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dev_err(component->dev, "DAI wrong mode unsupported"); |
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return -EINVAL; |
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} |
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regmap_update_bits(max98371->regmap, MAX98371_FMT, |
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MAX98371_FMT_MODE_MASK, val); |
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return 0; |
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} |
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static int max98371_dai_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 max98371_priv *max98371 = snd_soc_component_get_drvdata(component); |
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int blr_clk_ratio, ch_size, channels = params_channels(params); |
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int rate = params_rate(params); |
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switch (params_format(params)) { |
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case SNDRV_PCM_FORMAT_S8: |
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regmap_update_bits(max98371->regmap, MAX98371_FMT, |
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MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16); |
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ch_size = 8; |
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break; |
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case SNDRV_PCM_FORMAT_S16_LE: |
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regmap_update_bits(max98371->regmap, MAX98371_FMT, |
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MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16); |
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ch_size = 16; |
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break; |
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case SNDRV_PCM_FORMAT_S24_LE: |
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regmap_update_bits(max98371->regmap, MAX98371_FMT, |
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MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32); |
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ch_size = 24; |
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break; |
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case SNDRV_PCM_FORMAT_S32_LE: |
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regmap_update_bits(max98371->regmap, MAX98371_FMT, |
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MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32); |
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ch_size = 32; |
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break; |
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default: |
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return -EINVAL; |
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} |
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/* BCLK/LRCLK ratio calculation */ |
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blr_clk_ratio = channels * ch_size; |
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switch (blr_clk_ratio) { |
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case 32: |
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regmap_update_bits(max98371->regmap, |
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MAX98371_DAI_CLK, |
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MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_32); |
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break; |
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case 48: |
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regmap_update_bits(max98371->regmap, |
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MAX98371_DAI_CLK, |
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MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_48); |
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break; |
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case 64: |
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regmap_update_bits(max98371->regmap, |
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MAX98371_DAI_CLK, |
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MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_64); |
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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 (rate) { |
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case 32000: |
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regmap_update_bits(max98371->regmap, |
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MAX98371_SPK_SR, |
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MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_32); |
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break; |
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case 44100: |
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regmap_update_bits(max98371->regmap, |
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MAX98371_SPK_SR, |
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MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_44); |
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break; |
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case 48000: |
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regmap_update_bits(max98371->regmap, |
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MAX98371_SPK_SR, |
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MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_48); |
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break; |
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case 88200: |
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regmap_update_bits(max98371->regmap, |
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MAX98371_SPK_SR, |
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MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_88); |
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break; |
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case 96000: |
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regmap_update_bits(max98371->regmap, |
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MAX98371_SPK_SR, |
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MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_96); |
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break; |
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default: |
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return -EINVAL; |
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} |
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/* enabling both the RX channels*/ |
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regmap_update_bits(max98371->regmap, MAX98371_MONOMIX_SRC, |
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MAX98371_MONOMIX_SRC_MASK, MONOMIX_RX_0_1); |
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regmap_update_bits(max98371->regmap, MAX98371_DAI_CHANNEL, |
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MAX98371_CHANNEL_MASK, MAX98371_CHANNEL_MASK); |
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return 0; |
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} |
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static const struct snd_soc_dapm_widget max98371_dapm_widgets[] = { |
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SND_SOC_DAPM_DAC("DAC", NULL, MAX98371_SPK_ENABLE, 0, 0), |
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SND_SOC_DAPM_SUPPLY("Global Enable", MAX98371_GLOBAL_ENABLE, |
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0, 0, NULL, 0), |
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SND_SOC_DAPM_OUTPUT("SPK_OUT"), |
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}; |
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static const struct snd_soc_dapm_route max98371_audio_map[] = { |
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{"DAC", NULL, "HiFi Playback"}, |
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{"SPK_OUT", NULL, "DAC"}, |
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{"SPK_OUT", NULL, "Global Enable"}, |
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}; |
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#define MAX98371_RATES SNDRV_PCM_RATE_8000_48000 |
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#define MAX98371_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE | \ |
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SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE) |
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static const struct snd_soc_dai_ops max98371_dai_ops = { |
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.set_fmt = max98371_dai_set_fmt, |
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.hw_params = max98371_dai_hw_params, |
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}; |
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static struct snd_soc_dai_driver max98371_dai[] = { |
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{ |
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.name = "max98371-aif1", |
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.playback = { |
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.stream_name = "HiFi Playback", |
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.channels_min = 1, |
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.channels_max = 2, |
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.rates = SNDRV_PCM_RATE_8000_48000, |
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.formats = MAX98371_FORMATS, |
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}, |
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.ops = &max98371_dai_ops, |
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} |
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}; |
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static const struct snd_soc_component_driver max98371_component = { |
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.controls = max98371_snd_controls, |
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.num_controls = ARRAY_SIZE(max98371_snd_controls), |
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.dapm_routes = max98371_audio_map, |
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.num_dapm_routes = ARRAY_SIZE(max98371_audio_map), |
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.dapm_widgets = max98371_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(max98371_dapm_widgets), |
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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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static const struct regmap_config max98371_regmap = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = MAX98371_VERSION, |
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.reg_defaults = max98371_reg, |
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.num_reg_defaults = ARRAY_SIZE(max98371_reg), |
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.volatile_reg = max98371_volatile_register, |
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.readable_reg = max98371_readable_register, |
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.cache_type = REGCACHE_RBTREE, |
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}; |
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static int max98371_i2c_probe(struct i2c_client *i2c, |
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const struct i2c_device_id *id) |
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{ |
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struct max98371_priv *max98371; |
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int ret, reg; |
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max98371 = devm_kzalloc(&i2c->dev, |
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sizeof(*max98371), GFP_KERNEL); |
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if (!max98371) |
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return -ENOMEM; |
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i2c_set_clientdata(i2c, max98371); |
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max98371->regmap = devm_regmap_init_i2c(i2c, &max98371_regmap); |
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if (IS_ERR(max98371->regmap)) { |
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ret = PTR_ERR(max98371->regmap); |
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dev_err(&i2c->dev, |
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"Failed to allocate regmap: %d\n", ret); |
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return ret; |
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} |
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ret = regmap_read(max98371->regmap, MAX98371_VERSION, ®); |
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if (ret < 0) { |
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dev_info(&i2c->dev, "device error %d\n", ret); |
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return ret; |
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} |
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dev_info(&i2c->dev, "device version %x\n", reg); |
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ret = devm_snd_soc_register_component(&i2c->dev, &max98371_component, |
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max98371_dai, ARRAY_SIZE(max98371_dai)); |
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if (ret < 0) { |
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dev_err(&i2c->dev, "Failed to register component: %d\n", ret); |
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return ret; |
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} |
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return ret; |
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} |
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static const struct i2c_device_id max98371_i2c_id[] = { |
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{ "max98371", 0 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, max98371_i2c_id); |
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#ifdef CONFIG_OF |
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static const struct of_device_id max98371_of_match[] = { |
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{ .compatible = "maxim,max98371", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, max98371_of_match); |
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#endif |
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static struct i2c_driver max98371_i2c_driver = { |
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.driver = { |
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.name = "max98371", |
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.of_match_table = of_match_ptr(max98371_of_match), |
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}, |
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.probe = max98371_i2c_probe, |
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.id_table = max98371_i2c_id, |
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}; |
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module_i2c_driver(max98371_i2c_driver); |
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MODULE_AUTHOR("anish kumar <[email protected]>"); |
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MODULE_DESCRIPTION("ALSA SoC MAX98371 driver"); |
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MODULE_LICENSE("GPL");
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