654 lines
18 KiB
C
654 lines
18 KiB
C
/*
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* max98925.c -- ALSA SoC Stereo MAX98925 driver
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* Copyright 2013-15 Maxim Integrated Products
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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/delay.h>
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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 <linux/cdev.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 "max98925.h"
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static const char *const dai_text[] = {
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"Left", "Right", "LeftRight", "LeftRightDiv2",
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};
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static const char * const max98925_boost_voltage_text[] = {
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"8.5V", "8.25V", "8.0V", "7.75V", "7.5V", "7.25V", "7.0V", "6.75V",
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"6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V"
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};
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static SOC_ENUM_SINGLE_DECL(max98925_boost_voltage,
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MAX98925_CONFIGURATION, M98925_BST_VOUT_SHIFT,
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max98925_boost_voltage_text);
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static const char *const hpf_text[] = {
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"Disable", "DC Block", "100Hz", "200Hz", "400Hz", "800Hz",
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};
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static const struct reg_default max98925_reg[] = {
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{ 0x0B, 0x00 }, /* IRQ Enable0 */
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{ 0x0C, 0x00 }, /* IRQ Enable1 */
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{ 0x0D, 0x00 }, /* IRQ Enable2 */
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{ 0x0E, 0x00 }, /* IRQ Clear0 */
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{ 0x0F, 0x00 }, /* IRQ Clear1 */
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{ 0x10, 0x00 }, /* IRQ Clear2 */
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{ 0x11, 0xC0 }, /* Map0 */
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{ 0x12, 0x00 }, /* Map1 */
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{ 0x13, 0x00 }, /* Map2 */
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{ 0x14, 0xF0 }, /* Map3 */
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{ 0x15, 0x00 }, /* Map4 */
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{ 0x16, 0xAB }, /* Map5 */
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{ 0x17, 0x89 }, /* Map6 */
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{ 0x18, 0x00 }, /* Map7 */
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{ 0x19, 0x00 }, /* Map8 */
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{ 0x1A, 0x06 }, /* DAI Clock Mode 1 */
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{ 0x1B, 0xC0 }, /* DAI Clock Mode 2 */
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{ 0x1C, 0x00 }, /* DAI Clock Divider Denominator MSBs */
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{ 0x1D, 0x00 }, /* DAI Clock Divider Denominator LSBs */
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{ 0x1E, 0xF0 }, /* DAI Clock Divider Numerator MSBs */
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{ 0x1F, 0x00 }, /* DAI Clock Divider Numerator LSBs */
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{ 0x20, 0x50 }, /* Format */
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{ 0x21, 0x00 }, /* TDM Slot Select */
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{ 0x22, 0x00 }, /* DOUT Configuration VMON */
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{ 0x23, 0x00 }, /* DOUT Configuration IMON */
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{ 0x24, 0x00 }, /* DOUT Configuration VBAT */
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{ 0x25, 0x00 }, /* DOUT Configuration VBST */
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{ 0x26, 0x00 }, /* DOUT Configuration FLAG */
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{ 0x27, 0xFF }, /* DOUT HiZ Configuration 1 */
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{ 0x28, 0xFF }, /* DOUT HiZ Configuration 2 */
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{ 0x29, 0xFF }, /* DOUT HiZ Configuration 3 */
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{ 0x2A, 0xFF }, /* DOUT HiZ Configuration 4 */
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{ 0x2B, 0x02 }, /* DOUT Drive Strength */
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{ 0x2C, 0x90 }, /* Filters */
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{ 0x2D, 0x00 }, /* Gain */
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{ 0x2E, 0x02 }, /* Gain Ramping */
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{ 0x2F, 0x00 }, /* Speaker Amplifier */
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{ 0x30, 0x0A }, /* Threshold */
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{ 0x31, 0x00 }, /* ALC Attack */
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{ 0x32, 0x80 }, /* ALC Atten and Release */
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{ 0x33, 0x00 }, /* ALC Infinite Hold Release */
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{ 0x34, 0x92 }, /* ALC Configuration */
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{ 0x35, 0x01 }, /* Boost Converter */
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{ 0x36, 0x00 }, /* Block Enable */
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{ 0x37, 0x00 }, /* Configuration */
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{ 0x38, 0x00 }, /* Global Enable */
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{ 0x3A, 0x00 }, /* Boost Limiter */
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};
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static const struct soc_enum max98925_dai_enum =
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SOC_ENUM_SINGLE(MAX98925_GAIN, 5, ARRAY_SIZE(dai_text), dai_text);
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static const struct soc_enum max98925_hpf_enum =
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SOC_ENUM_SINGLE(MAX98925_FILTERS, 0, ARRAY_SIZE(hpf_text), hpf_text);
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static const struct snd_kcontrol_new max98925_hpf_sel_mux =
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SOC_DAPM_ENUM("Rc Filter MUX Mux", max98925_hpf_enum);
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static const struct snd_kcontrol_new max98925_dai_sel_mux =
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SOC_DAPM_ENUM("DAI IN MUX Mux", max98925_dai_enum);
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static int max98925_dac_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
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struct max98925_priv *max98925 = snd_soc_codec_get_drvdata(codec);
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switch (event) {
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case SND_SOC_DAPM_PRE_PMU:
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regmap_update_bits(max98925->regmap,
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MAX98925_BLOCK_ENABLE,
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M98925_BST_EN_MASK |
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M98925_ADC_IMON_EN_MASK | M98925_ADC_VMON_EN_MASK,
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M98925_BST_EN_MASK |
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M98925_ADC_IMON_EN_MASK | M98925_ADC_VMON_EN_MASK);
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break;
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case SND_SOC_DAPM_POST_PMD:
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regmap_update_bits(max98925->regmap,
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MAX98925_BLOCK_ENABLE, M98925_BST_EN_MASK |
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M98925_ADC_IMON_EN_MASK | M98925_ADC_VMON_EN_MASK, 0);
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break;
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default:
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return 0;
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}
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return 0;
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}
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static const struct snd_soc_dapm_widget max98925_dapm_widgets[] = {
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SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_MUX("DAI IN MUX", SND_SOC_NOPM, 0, 0,
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&max98925_dai_sel_mux),
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SND_SOC_DAPM_MUX("Rc Filter MUX", SND_SOC_NOPM, 0, 0,
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&max98925_hpf_sel_mux),
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SND_SOC_DAPM_DAC_E("Amp Enable", NULL, MAX98925_BLOCK_ENABLE,
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M98925_SPK_EN_SHIFT, 0, max98925_dac_event,
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_SUPPLY("Global Enable", MAX98925_GLOBAL_ENABLE,
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M98925_EN_SHIFT, 0, NULL, 0),
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SND_SOC_DAPM_OUTPUT("BE_OUT"),
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};
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static const struct snd_soc_dapm_route max98925_audio_map[] = {
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{"DAI IN MUX", "Left", "DAI_OUT"},
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{"DAI IN MUX", "Right", "DAI_OUT"},
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{"DAI IN MUX", "LeftRight", "DAI_OUT"},
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{"DAI IN MUX", "LeftRightDiv2", "DAI_OUT"},
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{"Rc Filter MUX", "Disable", "DAI IN MUX"},
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{"Rc Filter MUX", "DC Block", "DAI IN MUX"},
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{"Rc Filter MUX", "100Hz", "DAI IN MUX"},
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{"Rc Filter MUX", "200Hz", "DAI IN MUX"},
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{"Rc Filter MUX", "400Hz", "DAI IN MUX"},
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{"Rc Filter MUX", "800Hz", "DAI IN MUX"},
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{"Amp Enable", NULL, "Rc Filter MUX"},
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{"BE_OUT", NULL, "Amp Enable"},
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{"BE_OUT", NULL, "Global Enable"},
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};
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static bool max98925_volatile_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case MAX98925_VBAT_DATA:
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case MAX98925_VBST_DATA:
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case MAX98925_LIVE_STATUS0:
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case MAX98925_LIVE_STATUS1:
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case MAX98925_LIVE_STATUS2:
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case MAX98925_STATE0:
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case MAX98925_STATE1:
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case MAX98925_STATE2:
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case MAX98925_FLAG0:
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case MAX98925_FLAG1:
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case MAX98925_FLAG2:
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case MAX98925_REV_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 max98925_readable_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case MAX98925_IRQ_CLEAR0:
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case MAX98925_IRQ_CLEAR1:
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case MAX98925_IRQ_CLEAR2:
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case MAX98925_ALC_HOLD_RLS:
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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 DECLARE_TLV_DB_SCALE(max98925_spk_tlv, -600, 100, 0);
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static const struct snd_kcontrol_new max98925_snd_controls[] = {
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SOC_SINGLE_TLV("Speaker Volume", MAX98925_GAIN,
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M98925_SPK_GAIN_SHIFT, (1<<M98925_SPK_GAIN_WIDTH)-1, 0,
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max98925_spk_tlv),
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SOC_SINGLE("Ramp Switch", MAX98925_GAIN_RAMPING,
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M98925_SPK_RMP_EN_SHIFT, 1, 0),
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SOC_SINGLE("ZCD Switch", MAX98925_GAIN_RAMPING,
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M98925_SPK_ZCD_EN_SHIFT, 1, 0),
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SOC_SINGLE("ALC Switch", MAX98925_THRESHOLD,
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M98925_ALC_EN_SHIFT, 1, 0),
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SOC_SINGLE("ALC Threshold", MAX98925_THRESHOLD, M98925_ALC_TH_SHIFT,
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(1<<M98925_ALC_TH_WIDTH)-1, 0),
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SOC_ENUM("Boost Output Voltage", max98925_boost_voltage),
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};
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/* codec sample rate and n/m dividers parameter table */
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static const struct {
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int rate;
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int sr;
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int divisors[3][2];
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} rate_table[] = {
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{
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.rate = 8000,
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.sr = 0,
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.divisors = { {1, 375}, {5, 1764}, {1, 384} }
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},
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{
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.rate = 11025,
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.sr = 1,
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.divisors = { {147, 40000}, {1, 256}, {147, 40960} }
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},
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{
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.rate = 12000,
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.sr = 2,
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.divisors = { {1, 250}, {5, 1176}, {1, 256} }
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},
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{
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.rate = 16000,
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.sr = 3,
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.divisors = { {2, 375}, {5, 882}, {1, 192} }
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},
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{
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.rate = 22050,
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.sr = 4,
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.divisors = { {147, 20000}, {1, 128}, {147, 20480} }
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},
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{
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.rate = 24000,
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.sr = 5,
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.divisors = { {1, 125}, {5, 588}, {1, 128} }
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},
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{
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.rate = 32000,
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.sr = 6,
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.divisors = { {4, 375}, {5, 441}, {1, 96} }
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},
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{
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.rate = 44100,
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.sr = 7,
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.divisors = { {147, 10000}, {1, 64}, {147, 10240} }
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},
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{
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.rate = 48000,
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.sr = 8,
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.divisors = { {2, 125}, {5, 294}, {1, 64} }
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},
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};
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static inline int max98925_rate_value(struct snd_soc_codec *codec,
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int rate, int clock, int *value, int *n, int *m)
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{
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int ret = -EINVAL;
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int i;
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for (i = 0; i < ARRAY_SIZE(rate_table); i++) {
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if (rate_table[i].rate >= rate) {
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*value = rate_table[i].sr;
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*n = rate_table[i].divisors[clock][0];
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*m = rate_table[i].divisors[clock][1];
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ret = 0;
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break;
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}
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}
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return ret;
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}
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static void max98925_set_sense_data(struct max98925_priv *max98925)
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{
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/* set VMON slots */
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regmap_update_bits(max98925->regmap,
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MAX98925_DOUT_CFG_VMON,
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M98925_DAI_VMON_EN_MASK, M98925_DAI_VMON_EN_MASK);
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regmap_update_bits(max98925->regmap,
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MAX98925_DOUT_CFG_VMON,
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M98925_DAI_VMON_SLOT_MASK,
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max98925->v_slot << M98925_DAI_VMON_SLOT_SHIFT);
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/* set IMON slots */
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regmap_update_bits(max98925->regmap,
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MAX98925_DOUT_CFG_IMON,
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M98925_DAI_IMON_EN_MASK, M98925_DAI_IMON_EN_MASK);
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regmap_update_bits(max98925->regmap,
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MAX98925_DOUT_CFG_IMON,
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M98925_DAI_IMON_SLOT_MASK,
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max98925->i_slot << M98925_DAI_IMON_SLOT_SHIFT);
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}
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static int max98925_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_codec *codec = codec_dai->codec;
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struct max98925_priv *max98925 = snd_soc_codec_get_drvdata(codec);
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unsigned int invert = 0;
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dev_dbg(codec->dev, "%s: fmt 0x%08X\n", __func__, fmt);
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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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/* set DAI to slave mode */
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regmap_update_bits(max98925->regmap,
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MAX98925_DAI_CLK_MODE2,
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M98925_DAI_MAS_MASK, 0);
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max98925_set_sense_data(max98925);
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break;
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case SND_SOC_DAIFMT_CBM_CFM:
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/*
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* set left channel DAI to master mode,
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* right channel always slave
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*/
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regmap_update_bits(max98925->regmap,
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MAX98925_DAI_CLK_MODE2,
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M98925_DAI_MAS_MASK, M98925_DAI_MAS_MASK);
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break;
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case SND_SOC_DAIFMT_CBS_CFM:
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case SND_SOC_DAIFMT_CBM_CFS:
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default:
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dev_err(codec->dev, "DAI clock mode unsupported");
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return -EINVAL;
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}
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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_NB_IF:
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invert = M98925_DAI_WCI_MASK;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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invert = M98925_DAI_BCI_MASK;
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break;
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case SND_SOC_DAIFMT_IB_IF:
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invert = M98925_DAI_BCI_MASK | M98925_DAI_WCI_MASK;
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break;
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default:
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dev_err(codec->dev, "DAI invert mode unsupported");
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return -EINVAL;
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}
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regmap_update_bits(max98925->regmap, MAX98925_FORMAT,
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M98925_DAI_BCI_MASK | M98925_DAI_WCI_MASK, invert);
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return 0;
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}
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static int max98925_set_clock(struct max98925_priv *max98925,
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struct snd_pcm_hw_params *params)
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{
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unsigned int dai_sr = 0, clock, mdll, n, m;
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struct snd_soc_codec *codec = max98925->codec;
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int rate = params_rate(params);
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/* BCLK/LRCLK ratio calculation */
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int blr_clk_ratio = params_channels(params) * max98925->ch_size;
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switch (blr_clk_ratio) {
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case 32:
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regmap_update_bits(max98925->regmap,
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MAX98925_DAI_CLK_MODE2,
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M98925_DAI_BSEL_MASK, M98925_DAI_BSEL_32);
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break;
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case 48:
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regmap_update_bits(max98925->regmap,
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MAX98925_DAI_CLK_MODE2,
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M98925_DAI_BSEL_MASK, M98925_DAI_BSEL_48);
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break;
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case 64:
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regmap_update_bits(max98925->regmap,
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MAX98925_DAI_CLK_MODE2,
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M98925_DAI_BSEL_MASK, M98925_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 (max98925->sysclk) {
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case 6000000:
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clock = 0;
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mdll = M98925_MDLL_MULT_MCLKx16;
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break;
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case 11289600:
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clock = 1;
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mdll = M98925_MDLL_MULT_MCLKx8;
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break;
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case 12000000:
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clock = 0;
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mdll = M98925_MDLL_MULT_MCLKx8;
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break;
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case 12288000:
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clock = 2;
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mdll = M98925_MDLL_MULT_MCLKx8;
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break;
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default:
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dev_info(max98925->codec->dev, "unsupported sysclk %d\n",
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max98925->sysclk);
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return -EINVAL;
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}
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if (max98925_rate_value(codec, rate, clock, &dai_sr, &n, &m))
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return -EINVAL;
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/* set DAI_SR to correct LRCLK frequency */
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regmap_update_bits(max98925->regmap,
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MAX98925_DAI_CLK_MODE2,
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M98925_DAI_SR_MASK, dai_sr << M98925_DAI_SR_SHIFT);
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/* set DAI m divider */
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regmap_write(max98925->regmap,
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MAX98925_DAI_CLK_DIV_M_MSBS, m >> 8);
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regmap_write(max98925->regmap,
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MAX98925_DAI_CLK_DIV_M_LSBS, m & 0xFF);
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/* set DAI n divider */
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regmap_write(max98925->regmap,
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MAX98925_DAI_CLK_DIV_N_MSBS, n >> 8);
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regmap_write(max98925->regmap,
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MAX98925_DAI_CLK_DIV_N_LSBS, n & 0xFF);
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/* set MDLL */
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regmap_update_bits(max98925->regmap, MAX98925_DAI_CLK_MODE1,
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M98925_MDLL_MULT_MASK, mdll << M98925_MDLL_MULT_SHIFT);
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return 0;
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}
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static int max98925_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_codec *codec = dai->codec;
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struct max98925_priv *max98925 = snd_soc_codec_get_drvdata(codec);
|
|
|
|
switch (params_width(params)) {
|
|
case 16:
|
|
regmap_update_bits(max98925->regmap,
|
|
MAX98925_FORMAT,
|
|
M98925_DAI_CHANSZ_MASK, M98925_DAI_CHANSZ_16);
|
|
max98925->ch_size = 16;
|
|
break;
|
|
case 24:
|
|
regmap_update_bits(max98925->regmap,
|
|
MAX98925_FORMAT,
|
|
M98925_DAI_CHANSZ_MASK, M98925_DAI_CHANSZ_24);
|
|
max98925->ch_size = 24;
|
|
break;
|
|
case 32:
|
|
regmap_update_bits(max98925->regmap,
|
|
MAX98925_FORMAT,
|
|
M98925_DAI_CHANSZ_MASK, M98925_DAI_CHANSZ_32);
|
|
max98925->ch_size = 32;
|
|
break;
|
|
default:
|
|
pr_err("%s: format unsupported %d",
|
|
__func__, params_format(params));
|
|
return -EINVAL;
|
|
}
|
|
dev_dbg(codec->dev, "%s: format supported %d",
|
|
__func__, params_format(params));
|
|
return max98925_set_clock(max98925, params);
|
|
}
|
|
|
|
static int max98925_dai_set_sysclk(struct snd_soc_dai *dai,
|
|
int clk_id, unsigned int freq, int dir)
|
|
{
|
|
struct snd_soc_codec *codec = dai->codec;
|
|
struct max98925_priv *max98925 = snd_soc_codec_get_drvdata(codec);
|
|
|
|
switch (clk_id) {
|
|
case 0:
|
|
/* use MCLK for Left channel, right channel always BCLK */
|
|
regmap_update_bits(max98925->regmap,
|
|
MAX98925_DAI_CLK_MODE1,
|
|
M98925_DAI_CLK_SOURCE_MASK, 0);
|
|
break;
|
|
case 1:
|
|
/* configure dai clock source to BCLK instead of MCLK */
|
|
regmap_update_bits(max98925->regmap,
|
|
MAX98925_DAI_CLK_MODE1,
|
|
M98925_DAI_CLK_SOURCE_MASK,
|
|
M98925_DAI_CLK_SOURCE_MASK);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
max98925->sysclk = freq;
|
|
return 0;
|
|
}
|
|
|
|
#define MAX98925_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
|
|
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
|
|
|
|
static const struct snd_soc_dai_ops max98925_dai_ops = {
|
|
.set_sysclk = max98925_dai_set_sysclk,
|
|
.set_fmt = max98925_dai_set_fmt,
|
|
.hw_params = max98925_dai_hw_params,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver max98925_dai[] = {
|
|
{
|
|
.name = "max98925-aif1",
|
|
.playback = {
|
|
.stream_name = "HiFi Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = SNDRV_PCM_RATE_8000_48000,
|
|
.formats = MAX98925_FORMATS,
|
|
},
|
|
.capture = {
|
|
.stream_name = "HiFi Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = SNDRV_PCM_RATE_8000_48000,
|
|
.formats = MAX98925_FORMATS,
|
|
},
|
|
.ops = &max98925_dai_ops,
|
|
}
|
|
};
|
|
|
|
static int max98925_probe(struct snd_soc_codec *codec)
|
|
{
|
|
struct max98925_priv *max98925 = snd_soc_codec_get_drvdata(codec);
|
|
|
|
max98925->codec = codec;
|
|
regmap_write(max98925->regmap, MAX98925_GLOBAL_ENABLE, 0x00);
|
|
/* It's not the default but we need to set DAI_DLY */
|
|
regmap_write(max98925->regmap,
|
|
MAX98925_FORMAT, M98925_DAI_DLY_MASK);
|
|
regmap_write(max98925->regmap, MAX98925_TDM_SLOT_SELECT, 0xC8);
|
|
regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG1, 0xFF);
|
|
regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG2, 0xFF);
|
|
regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG3, 0xFF);
|
|
regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG4, 0xF0);
|
|
regmap_write(max98925->regmap, MAX98925_FILTERS, 0xD8);
|
|
regmap_write(max98925->regmap, MAX98925_ALC_CONFIGURATION, 0xF8);
|
|
regmap_write(max98925->regmap, MAX98925_CONFIGURATION, 0xF0);
|
|
/* Disable ALC muting */
|
|
regmap_write(max98925->regmap, MAX98925_BOOST_LIMITER, 0xF8);
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_soc_codec_driver soc_codec_dev_max98925 = {
|
|
.probe = max98925_probe,
|
|
.component_driver = {
|
|
.controls = max98925_snd_controls,
|
|
.num_controls = ARRAY_SIZE(max98925_snd_controls),
|
|
.dapm_routes = max98925_audio_map,
|
|
.num_dapm_routes = ARRAY_SIZE(max98925_audio_map),
|
|
.dapm_widgets = max98925_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(max98925_dapm_widgets),
|
|
},
|
|
};
|
|
|
|
static const struct regmap_config max98925_regmap = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.max_register = MAX98925_REV_VERSION,
|
|
.reg_defaults = max98925_reg,
|
|
.num_reg_defaults = ARRAY_SIZE(max98925_reg),
|
|
.volatile_reg = max98925_volatile_register,
|
|
.readable_reg = max98925_readable_register,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
};
|
|
|
|
static int max98925_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
int ret, reg;
|
|
u32 value;
|
|
struct max98925_priv *max98925;
|
|
|
|
max98925 = devm_kzalloc(&i2c->dev,
|
|
sizeof(*max98925), GFP_KERNEL);
|
|
if (!max98925)
|
|
return -ENOMEM;
|
|
|
|
i2c_set_clientdata(i2c, max98925);
|
|
max98925->regmap = devm_regmap_init_i2c(i2c, &max98925_regmap);
|
|
if (IS_ERR(max98925->regmap)) {
|
|
ret = PTR_ERR(max98925->regmap);
|
|
dev_err(&i2c->dev,
|
|
"Failed to allocate regmap: %d\n", ret);
|
|
goto err_out;
|
|
}
|
|
|
|
if (!of_property_read_u32(i2c->dev.of_node, "vmon-slot-no", &value)) {
|
|
if (value > M98925_DAI_VMON_SLOT_1E_1F) {
|
|
dev_err(&i2c->dev, "vmon slot number is wrong:\n");
|
|
return -EINVAL;
|
|
}
|
|
max98925->v_slot = value;
|
|
}
|
|
if (!of_property_read_u32(i2c->dev.of_node, "imon-slot-no", &value)) {
|
|
if (value > M98925_DAI_IMON_SLOT_1E_1F) {
|
|
dev_err(&i2c->dev, "imon slot number is wrong:\n");
|
|
return -EINVAL;
|
|
}
|
|
max98925->i_slot = value;
|
|
}
|
|
ret = regmap_read(max98925->regmap,
|
|
MAX98925_REV_VERSION, ®);
|
|
if ((ret < 0) ||
|
|
((reg != MAX98925_VERSION) &&
|
|
(reg != MAX98925_VERSION1))) {
|
|
dev_err(&i2c->dev,
|
|
"device initialization error (%d 0x%02X)\n",
|
|
ret, reg);
|
|
goto err_out;
|
|
}
|
|
dev_info(&i2c->dev, "device version 0x%02X\n", reg);
|
|
|
|
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_max98925,
|
|
max98925_dai, ARRAY_SIZE(max98925_dai));
|
|
if (ret < 0)
|
|
dev_err(&i2c->dev,
|
|
"Failed to register codec: %d\n", ret);
|
|
err_out:
|
|
return ret;
|
|
}
|
|
|
|
static int max98925_i2c_remove(struct i2c_client *client)
|
|
{
|
|
snd_soc_unregister_codec(&client->dev);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id max98925_i2c_id[] = {
|
|
{ "max98925", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, max98925_i2c_id);
|
|
|
|
static const struct of_device_id max98925_of_match[] = {
|
|
{ .compatible = "maxim,max98925", },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, max98925_of_match);
|
|
|
|
static struct i2c_driver max98925_i2c_driver = {
|
|
.driver = {
|
|
.name = "max98925",
|
|
.of_match_table = of_match_ptr(max98925_of_match),
|
|
.pm = NULL,
|
|
},
|
|
.probe = max98925_i2c_probe,
|
|
.remove = max98925_i2c_remove,
|
|
.id_table = max98925_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(max98925_i2c_driver)
|
|
|
|
MODULE_DESCRIPTION("ALSA SoC MAX98925 driver");
|
|
MODULE_AUTHOR("Ralph Birt <rdbirt@gmail.com>, Anish kumar <anish.kumar@maximintegrated.com>");
|
|
MODULE_LICENSE("GPL");
|