699 lines
20 KiB
C
699 lines
20 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// MAX9867 ALSA SoC codec driver
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//
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// Copyright 2013-2015 Maxim Integrated Products
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// Copyright 2018 Ladislav Michl <ladis@linux-mips.org>
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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 <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 "max9867.h"
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struct max9867_priv {
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struct regmap *regmap;
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const struct snd_pcm_hw_constraint_list *constraints;
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unsigned int sysclk, pclk;
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bool provider, dsp_a;
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unsigned int adc_dac_active;
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};
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static const char *const max9867_spmode[] = {
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"Stereo Diff", "Mono Diff",
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"Stereo Cap", "Mono Cap",
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"Stereo Single", "Mono Single",
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"Stereo Single Fast", "Mono Single Fast"
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};
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static const char *const max9867_filter_text[] = {"IIR", "FIR"};
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static const char *const max9867_adc_dac_filter_text[] = {
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"Disabled",
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"Elliptical/16/256",
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"Butterworth/16/500",
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"Elliptical/8/256",
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"Butterworth/8/500",
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"Butterworth/8-24"
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};
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enum max9867_adc_dac {
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MAX9867_ADC_LEFT,
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MAX9867_ADC_RIGHT,
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MAX9867_DAC_LEFT,
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MAX9867_DAC_RIGHT,
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};
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static int max9867_adc_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_component *component = snd_soc_dapm_to_component(w->dapm);
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struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
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enum max9867_adc_dac adc_dac;
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if (!strcmp(w->name, "ADCL"))
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adc_dac = MAX9867_ADC_LEFT;
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else if (!strcmp(w->name, "ADCR"))
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adc_dac = MAX9867_ADC_RIGHT;
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else if (!strcmp(w->name, "DACL"))
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adc_dac = MAX9867_DAC_LEFT;
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else if (!strcmp(w->name, "DACR"))
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adc_dac = MAX9867_DAC_RIGHT;
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else
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return 0;
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if (SND_SOC_DAPM_EVENT_ON(event))
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max9867->adc_dac_active |= BIT(adc_dac);
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else if (SND_SOC_DAPM_EVENT_OFF(event))
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max9867->adc_dac_active &= ~BIT(adc_dac);
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return 0;
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}
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static int max9867_filter_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
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struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
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unsigned int reg;
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int ret;
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ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, ®);
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if (ret)
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return -EINVAL;
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if (reg & MAX9867_CODECFLTR_MODE)
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ucontrol->value.enumerated.item[0] = 1;
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else
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ucontrol->value.enumerated.item[0] = 0;
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return 0;
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}
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static int max9867_filter_set(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
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struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
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unsigned int reg, mode = ucontrol->value.enumerated.item[0];
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int ret;
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if (mode > 1)
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return -EINVAL;
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/* don't allow change if ADC/DAC active */
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if (max9867->adc_dac_active)
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return -EBUSY;
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/* read current filter mode */
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ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, ®);
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if (ret)
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return -EINVAL;
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if (mode)
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mode = MAX9867_CODECFLTR_MODE;
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/* check if change is needed */
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if ((reg & MAX9867_CODECFLTR_MODE) == mode)
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return 0;
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/* shutdown codec before switching filter mode */
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regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
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MAX9867_PWRMAN_SHDN, 0);
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/* switch filter mode */
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regmap_update_bits(max9867->regmap, MAX9867_CODECFLTR,
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MAX9867_CODECFLTR_MODE, mode);
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/* out of shutdown now */
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regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
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MAX9867_PWRMAN_SHDN, MAX9867_PWRMAN_SHDN);
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return 0;
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}
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static SOC_ENUM_SINGLE_EXT_DECL(max9867_filter, max9867_filter_text);
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static SOC_ENUM_SINGLE_DECL(max9867_dac_filter, MAX9867_CODECFLTR, 0,
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max9867_adc_dac_filter_text);
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static SOC_ENUM_SINGLE_DECL(max9867_adc_filter, MAX9867_CODECFLTR, 4,
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max9867_adc_dac_filter_text);
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static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0,
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max9867_spmode);
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static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_master_tlv,
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0, 2, TLV_DB_SCALE_ITEM(-8600, 200, 1),
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3, 17, TLV_DB_SCALE_ITEM(-7800, 400, 0),
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18, 25, TLV_DB_SCALE_ITEM(-2000, 200, 0),
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26, 34, TLV_DB_SCALE_ITEM( -500, 100, 0),
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35, 40, TLV_DB_SCALE_ITEM( 350, 50, 0),
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);
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static DECLARE_TLV_DB_SCALE(max9867_mic_tlv, 0, 100, 0);
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static DECLARE_TLV_DB_SCALE(max9867_line_tlv, -600, 200, 0);
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static DECLARE_TLV_DB_SCALE(max9867_adc_tlv, -1200, 100, 0);
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static DECLARE_TLV_DB_SCALE(max9867_dac_tlv, -1500, 100, 0);
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static DECLARE_TLV_DB_SCALE(max9867_dacboost_tlv, 0, 600, 0);
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static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_micboost_tlv,
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0, 2, TLV_DB_SCALE_ITEM(-2000, 2000, 1),
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3, 3, TLV_DB_SCALE_ITEM(3000, 0, 0),
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);
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static const struct snd_kcontrol_new max9867_snd_controls[] = {
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SOC_DOUBLE_R_TLV("Master Playback Volume", MAX9867_LEFTVOL,
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MAX9867_RIGHTVOL, 0, 40, 1, max9867_master_tlv),
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SOC_DOUBLE_R_TLV("Line Capture Volume", MAX9867_LEFTLINELVL,
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MAX9867_RIGHTLINELVL, 0, 15, 1, max9867_line_tlv),
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SOC_DOUBLE_R_TLV("Mic Capture Volume", MAX9867_LEFTMICGAIN,
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MAX9867_RIGHTMICGAIN, 0, 20, 1, max9867_mic_tlv),
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SOC_DOUBLE_R_TLV("Mic Boost Capture Volume", MAX9867_LEFTMICGAIN,
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MAX9867_RIGHTMICGAIN, 5, 3, 0, max9867_micboost_tlv),
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SOC_SINGLE("Digital Sidetone Volume", MAX9867_SIDETONE, 0, 31, 1),
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SOC_SINGLE_TLV("Digital Playback Volume", MAX9867_DACLEVEL, 0, 15, 1,
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max9867_dac_tlv),
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SOC_SINGLE_TLV("Digital Boost Playback Volume", MAX9867_DACLEVEL, 4, 3, 0,
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max9867_dacboost_tlv),
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SOC_DOUBLE_TLV("Digital Capture Volume", MAX9867_ADCLEVEL, 4, 0, 15, 1,
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max9867_adc_tlv),
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SOC_ENUM("Speaker Mode", max9867_spkmode),
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SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0),
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SOC_SINGLE("Line ZC Switch", MAX9867_MODECONFIG, 5, 1, 0),
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SOC_ENUM_EXT("DSP Filter", max9867_filter, max9867_filter_get, max9867_filter_set),
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SOC_ENUM("ADC Filter", max9867_adc_filter),
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SOC_ENUM("DAC Filter", max9867_dac_filter),
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SOC_SINGLE("Mono Playback Switch", MAX9867_IFC1B, 3, 1, 0),
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};
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/* Input mixer */
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static const struct snd_kcontrol_new max9867_input_mixer_controls[] = {
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SOC_DAPM_DOUBLE("Line Capture Switch", MAX9867_INPUTCONFIG, 7, 5, 1, 0),
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SOC_DAPM_DOUBLE("Mic Capture Switch", MAX9867_INPUTCONFIG, 6, 4, 1, 0),
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};
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/* Output mixer */
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static const struct snd_kcontrol_new max9867_output_mixer_controls[] = {
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SOC_DAPM_DOUBLE_R("Line Bypass Switch",
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MAX9867_LEFTLINELVL, MAX9867_RIGHTLINELVL, 6, 1, 1),
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};
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/* Sidetone mixer */
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static const struct snd_kcontrol_new max9867_sidetone_mixer_controls[] = {
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SOC_DAPM_DOUBLE("Sidetone Switch", MAX9867_SIDETONE, 6, 7, 1, 0),
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};
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/* Line out switch */
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static const struct snd_kcontrol_new max9867_line_out_control =
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SOC_DAPM_DOUBLE_R("Switch",
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MAX9867_LEFTVOL, MAX9867_RIGHTVOL, 6, 1, 1);
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/* DMIC mux */
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static const char *const dmic_mux_text[] = {
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"ADC", "DMIC"
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};
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static SOC_ENUM_SINGLE_DECL(left_dmic_mux_enum,
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MAX9867_MICCONFIG, 5, dmic_mux_text);
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static SOC_ENUM_SINGLE_DECL(right_dmic_mux_enum,
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MAX9867_MICCONFIG, 4, dmic_mux_text);
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static const struct snd_kcontrol_new max9867_left_dmic_mux =
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SOC_DAPM_ENUM("DMICL Mux", left_dmic_mux_enum);
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static const struct snd_kcontrol_new max9867_right_dmic_mux =
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SOC_DAPM_ENUM("DMICR Mux", right_dmic_mux_enum);
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static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = {
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SND_SOC_DAPM_INPUT("MICL"),
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SND_SOC_DAPM_INPUT("MICR"),
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SND_SOC_DAPM_INPUT("DMICL"),
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SND_SOC_DAPM_INPUT("DMICR"),
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SND_SOC_DAPM_INPUT("LINL"),
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SND_SOC_DAPM_INPUT("LINR"),
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SND_SOC_DAPM_PGA("Left Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Right Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
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SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
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max9867_input_mixer_controls,
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ARRAY_SIZE(max9867_input_mixer_controls)),
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SND_SOC_DAPM_MUX("DMICL Mux", SND_SOC_NOPM, 0, 0,
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&max9867_left_dmic_mux),
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SND_SOC_DAPM_MUX("DMICR Mux", SND_SOC_NOPM, 0, 0,
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&max9867_right_dmic_mux),
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SND_SOC_DAPM_ADC_E("ADCL", "HiFi Capture", SND_SOC_NOPM, 0, 0,
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max9867_adc_dac_event,
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_ADC_E("ADCR", "HiFi Capture", SND_SOC_NOPM, 0, 0,
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max9867_adc_dac_event,
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_MIXER("Digital", SND_SOC_NOPM, 0, 0,
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max9867_sidetone_mixer_controls,
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ARRAY_SIZE(max9867_sidetone_mixer_controls)),
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SND_SOC_DAPM_MIXER_NAMED_CTL("Output Mixer", SND_SOC_NOPM, 0, 0,
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max9867_output_mixer_controls,
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ARRAY_SIZE(max9867_output_mixer_controls)),
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SND_SOC_DAPM_DAC_E("DACL", "HiFi Playback", SND_SOC_NOPM, 0, 0,
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max9867_adc_dac_event,
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_DAC_E("DACR", "HiFi Playback", SND_SOC_NOPM, 0, 0,
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max9867_adc_dac_event,
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_SWITCH("Master Playback", SND_SOC_NOPM, 0, 0,
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&max9867_line_out_control),
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SND_SOC_DAPM_OUTPUT("LOUT"),
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SND_SOC_DAPM_OUTPUT("ROUT"),
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};
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static const struct snd_soc_dapm_route max9867_audio_map[] = {
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{"Left Line Input", NULL, "LINL"},
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{"Right Line Input", NULL, "LINR"},
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{"Input Mixer", "Mic Capture Switch", "MICL"},
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{"Input Mixer", "Mic Capture Switch", "MICR"},
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{"Input Mixer", "Line Capture Switch", "Left Line Input"},
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{"Input Mixer", "Line Capture Switch", "Right Line Input"},
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{"DMICL Mux", "DMIC", "DMICL"},
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{"DMICR Mux", "DMIC", "DMICR"},
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{"DMICL Mux", "ADC", "Input Mixer"},
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{"DMICR Mux", "ADC", "Input Mixer"},
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{"ADCL", NULL, "DMICL Mux"},
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{"ADCR", NULL, "DMICR Mux"},
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{"Digital", "Sidetone Switch", "ADCL"},
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{"Digital", "Sidetone Switch", "ADCR"},
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{"DACL", NULL, "Digital"},
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{"DACR", NULL, "Digital"},
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{"Output Mixer", "Line Bypass Switch", "Left Line Input"},
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{"Output Mixer", "Line Bypass Switch", "Right Line Input"},
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{"Output Mixer", NULL, "DACL"},
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{"Output Mixer", NULL, "DACR"},
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{"Master Playback", "Switch", "Output Mixer"},
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{"LOUT", NULL, "Master Playback"},
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{"ROUT", NULL, "Master Playback"},
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};
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static const unsigned int max9867_rates_44k1[] = {
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11025, 22050, 44100,
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};
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static const struct snd_pcm_hw_constraint_list max9867_constraints_44k1 = {
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.list = max9867_rates_44k1,
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.count = ARRAY_SIZE(max9867_rates_44k1),
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};
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static const unsigned int max9867_rates_48k[] = {
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8000, 16000, 32000, 48000,
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};
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static const struct snd_pcm_hw_constraint_list max9867_constraints_48k = {
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.list = max9867_rates_48k,
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.count = ARRAY_SIZE(max9867_rates_48k),
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};
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static int max9867_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct max9867_priv *max9867 =
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snd_soc_component_get_drvdata(dai->component);
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if (max9867->constraints)
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snd_pcm_hw_constraint_list(substream->runtime, 0,
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SNDRV_PCM_HW_PARAM_RATE, max9867->constraints);
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return 0;
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}
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static int max9867_dai_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
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{
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int value, freq = 0;
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unsigned long int rate, ratio;
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struct snd_soc_component *component = dai->component;
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struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
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unsigned int ni = DIV_ROUND_CLOSEST_ULL(96ULL * 0x10000 * params_rate(params),
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max9867->pclk);
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/* set up the ni value */
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regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
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MAX9867_NI_HIGH_MASK, (0xFF00 & ni) >> 8);
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regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
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MAX9867_NI_LOW_MASK, 0x00FF & ni);
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if (max9867->provider) {
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if (max9867->dsp_a) {
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value = MAX9867_IFC1B_48X;
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} else {
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rate = params_rate(params) * 2 * params_width(params);
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ratio = max9867->pclk / rate;
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switch (params_width(params)) {
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case 8:
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case 16:
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switch (ratio) {
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case 2:
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value = MAX9867_IFC1B_PCLK_2;
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break;
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case 4:
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value = MAX9867_IFC1B_PCLK_4;
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break;
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case 8:
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value = MAX9867_IFC1B_PCLK_8;
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break;
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case 16:
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value = MAX9867_IFC1B_PCLK_16;
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break;
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default:
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return -EINVAL;
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}
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break;
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case 24:
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value = MAX9867_IFC1B_48X;
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break;
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case 32:
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value = MAX9867_IFC1B_64X;
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break;
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default:
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return -EINVAL;
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}
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}
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regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
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MAX9867_IFC1B_BCLK_MASK, value);
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/* Exact integer mode available for 8kHz and 16kHz sample rates
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* and certain PCLK (prescaled MCLK) values.
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*/
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if (params_rate(params) == 8000 ||
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params_rate(params) == 16000) {
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switch (max9867->pclk) {
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case 12000000:
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freq = 0x08;
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break;
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case 13000000:
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freq = 0x0A;
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break;
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case 16000000:
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freq = 0x0C;
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break;
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case 19200000:
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freq = 0x0E;
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break;
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}
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}
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if (freq && params_rate(params) == 16000)
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freq++;
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/* If exact integer mode not available, the freq value
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* remains zero, i.e. normal mode is used.
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*/
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regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
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MAX9867_FREQ_MASK, freq);
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} else {
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/*
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* digital pll locks on to any externally supplied LRCLK signal
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* and also enable rapid lock mode.
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*/
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regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
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MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK);
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regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
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MAX9867_PLL, MAX9867_PLL);
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}
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return 0;
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}
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static int max9867_mute(struct snd_soc_dai *dai, int mute, int direction)
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{
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struct snd_soc_component *component = dai->component;
|
|
struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
|
|
|
|
return regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL,
|
|
1 << 6, !!mute << 6);
|
|
}
|
|
|
|
static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai,
|
|
int clk_id, unsigned int freq, int dir)
|
|
{
|
|
struct snd_soc_component *component = codec_dai->component;
|
|
struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
|
|
int value = 0;
|
|
|
|
/* Set the prescaler based on the master clock frequency*/
|
|
if (freq >= 10000000 && freq <= 20000000) {
|
|
value |= MAX9867_PSCLK_10_20;
|
|
max9867->pclk = freq;
|
|
} else if (freq >= 20000000 && freq <= 40000000) {
|
|
value |= MAX9867_PSCLK_20_40;
|
|
max9867->pclk = freq / 2;
|
|
} else if (freq >= 40000000 && freq <= 60000000) {
|
|
value |= MAX9867_PSCLK_40_60;
|
|
max9867->pclk = freq / 4;
|
|
} else {
|
|
dev_err(component->dev,
|
|
"Invalid clock frequency %uHz (required 10-60MHz)\n",
|
|
freq);
|
|
return -EINVAL;
|
|
}
|
|
if (freq % 48000 == 0)
|
|
max9867->constraints = &max9867_constraints_48k;
|
|
else if (freq % 44100 == 0)
|
|
max9867->constraints = &max9867_constraints_44k1;
|
|
else
|
|
dev_warn(component->dev,
|
|
"Unable to set exact rate with %uHz clock frequency\n",
|
|
freq);
|
|
max9867->sysclk = freq;
|
|
value = value << MAX9867_PSCLK_SHIFT;
|
|
regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
|
|
MAX9867_PSCLK_MASK, value);
|
|
return 0;
|
|
}
|
|
|
|
static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai,
|
|
unsigned int fmt)
|
|
{
|
|
struct snd_soc_component *component = codec_dai->component;
|
|
struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
|
|
u8 iface1A, iface1B;
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
|
|
case SND_SOC_DAIFMT_CBP_CFP:
|
|
max9867->provider = true;
|
|
iface1A = MAX9867_MASTER;
|
|
iface1B = MAX9867_IFC1B_48X;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBC_CFC:
|
|
max9867->provider = false;
|
|
iface1A = iface1B = 0;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
|
case SND_SOC_DAIFMT_I2S:
|
|
max9867->dsp_a = false;
|
|
iface1A |= MAX9867_I2S_DLY;
|
|
break;
|
|
case SND_SOC_DAIFMT_DSP_A:
|
|
max9867->dsp_a = true;
|
|
iface1A |= MAX9867_TDM_MODE | MAX9867_SDOUT_HIZ;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Clock inversion bits, BCI and WCI */
|
|
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
|
|
case SND_SOC_DAIFMT_NB_NF:
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_IF:
|
|
iface1A |= MAX9867_WCI_MODE | MAX9867_BCI_MODE;
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_NF:
|
|
iface1A |= MAX9867_BCI_MODE;
|
|
break;
|
|
case SND_SOC_DAIFMT_NB_IF:
|
|
iface1A |= MAX9867_WCI_MODE;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A);
|
|
regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
|
|
MAX9867_IFC1B_BCLK_MASK, iface1B);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_soc_dai_ops max9867_dai_ops = {
|
|
.set_sysclk = max9867_set_dai_sysclk,
|
|
.set_fmt = max9867_dai_set_fmt,
|
|
.mute_stream = max9867_mute,
|
|
.startup = max9867_startup,
|
|
.hw_params = max9867_dai_hw_params,
|
|
.no_capture_mute = 1,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver max9867_dai[] = {
|
|
{
|
|
.name = "max9867-aif1",
|
|
.playback = {
|
|
.stream_name = "HiFi Playback",
|
|
.channels_min = 2,
|
|
.channels_max = 2,
|
|
.rates = SNDRV_PCM_RATE_8000_48000,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE,
|
|
},
|
|
.capture = {
|
|
.stream_name = "HiFi Capture",
|
|
.channels_min = 2,
|
|
.channels_max = 2,
|
|
.rates = SNDRV_PCM_RATE_8000_48000,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE,
|
|
},
|
|
.ops = &max9867_dai_ops,
|
|
.symmetric_rate = 1,
|
|
}
|
|
};
|
|
|
|
#ifdef CONFIG_PM
|
|
static int max9867_suspend(struct snd_soc_component *component)
|
|
{
|
|
snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int max9867_resume(struct snd_soc_component *component)
|
|
{
|
|
snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
#define max9867_suspend NULL
|
|
#define max9867_resume NULL
|
|
#endif
|
|
|
|
static int max9867_set_bias_level(struct snd_soc_component *component,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
int err;
|
|
struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
|
|
|
|
switch (level) {
|
|
case SND_SOC_BIAS_STANDBY:
|
|
if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
|
|
err = regcache_sync(max9867->regmap);
|
|
if (err)
|
|
return err;
|
|
|
|
err = regmap_write(max9867->regmap,
|
|
MAX9867_PWRMAN, 0xff);
|
|
if (err)
|
|
return err;
|
|
}
|
|
break;
|
|
case SND_SOC_BIAS_OFF:
|
|
err = regmap_write(max9867->regmap, MAX9867_PWRMAN, 0);
|
|
if (err)
|
|
return err;
|
|
|
|
regcache_mark_dirty(max9867->regmap);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_soc_component_driver max9867_component = {
|
|
.controls = max9867_snd_controls,
|
|
.num_controls = ARRAY_SIZE(max9867_snd_controls),
|
|
.dapm_routes = max9867_audio_map,
|
|
.num_dapm_routes = ARRAY_SIZE(max9867_audio_map),
|
|
.dapm_widgets = max9867_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(max9867_dapm_widgets),
|
|
.suspend = max9867_suspend,
|
|
.resume = max9867_resume,
|
|
.set_bias_level = max9867_set_bias_level,
|
|
.idle_bias_on = 1,
|
|
.use_pmdown_time = 1,
|
|
.endianness = 1,
|
|
};
|
|
|
|
static bool max9867_volatile_register(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case MAX9867_STATUS:
|
|
case MAX9867_JACKSTATUS:
|
|
case MAX9867_AUXHIGH:
|
|
case MAX9867_AUXLOW:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static const struct regmap_config max9867_regmap = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.max_register = MAX9867_REVISION,
|
|
.volatile_reg = max9867_volatile_register,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
};
|
|
|
|
static int max9867_i2c_probe(struct i2c_client *i2c)
|
|
{
|
|
struct max9867_priv *max9867;
|
|
int ret, reg;
|
|
|
|
max9867 = devm_kzalloc(&i2c->dev, sizeof(*max9867), GFP_KERNEL);
|
|
if (!max9867)
|
|
return -ENOMEM;
|
|
|
|
i2c_set_clientdata(i2c, max9867);
|
|
max9867->regmap = devm_regmap_init_i2c(i2c, &max9867_regmap);
|
|
if (IS_ERR(max9867->regmap)) {
|
|
ret = PTR_ERR(max9867->regmap);
|
|
dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
|
|
return ret;
|
|
}
|
|
ret = regmap_read(max9867->regmap, MAX9867_REVISION, ®);
|
|
if (ret < 0) {
|
|
dev_err(&i2c->dev, "Failed to read: %d\n", ret);
|
|
return ret;
|
|
}
|
|
dev_info(&i2c->dev, "device revision: %x\n", reg);
|
|
ret = devm_snd_soc_register_component(&i2c->dev, &max9867_component,
|
|
max9867_dai, ARRAY_SIZE(max9867_dai));
|
|
if (ret < 0)
|
|
dev_err(&i2c->dev, "Failed to register component: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static const struct i2c_device_id max9867_i2c_id[] = {
|
|
{ "max9867", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, max9867_i2c_id);
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id max9867_of_match[] = {
|
|
{ .compatible = "maxim,max9867", },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, max9867_of_match);
|
|
#endif
|
|
|
|
static struct i2c_driver max9867_i2c_driver = {
|
|
.driver = {
|
|
.name = "max9867",
|
|
.of_match_table = of_match_ptr(max9867_of_match),
|
|
},
|
|
.probe_new = max9867_i2c_probe,
|
|
.id_table = max9867_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(max9867_i2c_driver);
|
|
|
|
MODULE_AUTHOR("Ladislav Michl <ladis@linux-mips.org>");
|
|
MODULE_DESCRIPTION("ASoC MAX9867 driver");
|
|
MODULE_LICENSE("GPL");
|