439 lines
11 KiB
C
Executable file
439 lines
11 KiB
C
Executable file
/*
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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_RANGE(max98371_noload_gain_tlv,
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0, 11, TLV_DB_SCALE_ITEM(950, 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_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBS_CFS:
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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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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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static struct i2c_driver max98371_i2c_driver = {
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.driver = {
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.name = "max98371",
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.pm = NULL,
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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 <yesanishhere@gmail.com>");
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MODULE_DESCRIPTION("ALSA SoC MAX98371 driver");
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MODULE_LICENSE("GPL");
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