451 lines
12 KiB
C
451 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* ak4535.c -- AK4535 ALSA Soc Audio driver
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*
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* Copyright 2005 Openedhand Ltd.
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*
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* Author: Richard Purdie <richard@openedhand.com>
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*
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* Based on wm8753.c by Liam Girdwood
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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#include "ak4535.h"
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/* codec private data */
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struct ak4535_priv {
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struct regmap *regmap;
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unsigned int sysclk;
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};
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/*
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* ak4535 register cache
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*/
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static const struct reg_default ak4535_reg_defaults[] = {
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{ 0, 0x00 },
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{ 1, 0x80 },
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{ 2, 0x00 },
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{ 3, 0x03 },
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{ 4, 0x02 },
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{ 5, 0x00 },
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{ 6, 0x11 },
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{ 7, 0x01 },
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{ 8, 0x00 },
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{ 9, 0x40 },
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{ 10, 0x36 },
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{ 11, 0x10 },
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{ 12, 0x00 },
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{ 13, 0x00 },
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{ 14, 0x57 },
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};
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static bool ak4535_volatile(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case AK4535_STATUS:
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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 const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
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static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
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static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
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static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
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static const char *ak4535_mic_select[] = {"Internal", "External"};
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static const struct soc_enum ak4535_enum[] = {
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SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
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SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
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SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
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SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
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SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
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};
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static const struct snd_kcontrol_new ak4535_snd_controls[] = {
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SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
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SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
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SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
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SOC_ENUM("Headphone Output", ak4535_enum[2]),
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SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
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SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
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SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
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SOC_ENUM("Mic Select", ak4535_enum[4]),
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SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
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SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
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SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
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SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
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SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
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SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
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SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
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SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
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SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
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SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
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SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
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};
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/* Mono 1 Mixer */
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static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
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SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
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SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
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};
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/* Stereo Mixer */
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static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
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SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
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SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
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SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
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};
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/* Input Mixer */
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static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
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SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
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SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
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};
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/* Input mux */
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static const struct snd_kcontrol_new ak4535_input_mux_control =
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SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
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/* HP L switch */
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static const struct snd_kcontrol_new ak4535_hpl_control =
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SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
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/* HP R switch */
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static const struct snd_kcontrol_new ak4535_hpr_control =
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SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
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/* mono 2 switch */
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static const struct snd_kcontrol_new ak4535_mono2_control =
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SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
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/* Line out switch */
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static const struct snd_kcontrol_new ak4535_line_control =
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SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
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/* ak4535 dapm widgets */
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static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
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SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
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&ak4535_stereo_mixer_controls[0],
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ARRAY_SIZE(ak4535_stereo_mixer_controls)),
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SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
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&ak4535_mono1_mixer_controls[0],
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ARRAY_SIZE(ak4535_mono1_mixer_controls)),
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SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
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&ak4535_input_mixer_controls[0],
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ARRAY_SIZE(ak4535_input_mixer_controls)),
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SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
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&ak4535_input_mux_control),
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SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
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SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
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&ak4535_mono2_control),
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/* speaker powersave bit */
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SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
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SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
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&ak4535_line_control),
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SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
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&ak4535_hpl_control),
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SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
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&ak4535_hpr_control),
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SND_SOC_DAPM_OUTPUT("LOUT"),
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SND_SOC_DAPM_OUTPUT("HPL"),
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SND_SOC_DAPM_OUTPUT("ROUT"),
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SND_SOC_DAPM_OUTPUT("HPR"),
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SND_SOC_DAPM_OUTPUT("SPP"),
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SND_SOC_DAPM_OUTPUT("SPN"),
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SND_SOC_DAPM_OUTPUT("MOUT1"),
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SND_SOC_DAPM_OUTPUT("MOUT2"),
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SND_SOC_DAPM_OUTPUT("MICOUT"),
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SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
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SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
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SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
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SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
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SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
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SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
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SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
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SND_SOC_DAPM_INPUT("MICIN"),
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SND_SOC_DAPM_INPUT("MICEXT"),
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SND_SOC_DAPM_INPUT("AUX"),
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SND_SOC_DAPM_INPUT("MIN"),
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SND_SOC_DAPM_INPUT("AIN"),
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};
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static const struct snd_soc_dapm_route ak4535_audio_map[] = {
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/*stereo mixer */
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{"Stereo Mixer", "Playback Switch", "DAC"},
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{"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
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{"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
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/* mono1 mixer */
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{"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
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{"Mono1 Mixer", "Mono Playback Switch", "DAC"},
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/* Mic */
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{"Mic", NULL, "AIN"},
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{"Input Mux", "Internal", "Mic Int Bias"},
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{"Input Mux", "External", "Mic Ext Bias"},
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{"Mic Int Bias", NULL, "MICIN"},
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{"Mic Ext Bias", NULL, "MICEXT"},
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{"MICOUT", NULL, "Input Mux"},
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/* line out */
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{"LOUT", NULL, "Line Out Enable"},
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{"ROUT", NULL, "Line Out Enable"},
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{"Line Out Enable", "Switch", "Line Out"},
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{"Line Out", NULL, "Stereo Mixer"},
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/* mono1 out */
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{"MOUT1", NULL, "Mono Out"},
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{"Mono Out", NULL, "Mono1 Mixer"},
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/* left HP */
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{"HPL", NULL, "Left HP Enable"},
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{"Left HP Enable", "Switch", "HP L Amp"},
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{"HP L Amp", NULL, "Stereo Mixer"},
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/* right HP */
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{"HPR", NULL, "Right HP Enable"},
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{"Right HP Enable", "Switch", "HP R Amp"},
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{"HP R Amp", NULL, "Stereo Mixer"},
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/* speaker */
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{"SPP", NULL, "Speaker Enable"},
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{"SPN", NULL, "Speaker Enable"},
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{"Speaker Enable", "Switch", "Spk Amp"},
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{"Spk Amp", NULL, "MIN"},
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/* mono 2 */
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{"MOUT2", NULL, "Mono 2 Enable"},
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{"Mono 2 Enable", "Switch", "Stereo Mixer"},
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/* Aux In */
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{"Aux In", NULL, "AUX"},
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/* ADC */
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{"ADC", NULL, "Input Mixer"},
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{"Input Mixer", "Mic Capture Switch", "Mic"},
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{"Input Mixer", "Aux Capture Switch", "Aux In"},
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};
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static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
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int clk_id, unsigned int freq, int dir)
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{
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struct snd_soc_component *component = codec_dai->component;
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struct ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);
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ak4535->sysclk = freq;
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return 0;
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}
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static int ak4535_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 ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);
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u8 mode2 = snd_soc_component_read(component, AK4535_MODE2) & ~(0x3 << 5);
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int rate = params_rate(params), fs = 256;
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if (rate)
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fs = ak4535->sysclk / rate;
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/* set fs */
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switch (fs) {
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case 1024:
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mode2 |= (0x2 << 5);
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break;
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case 512:
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mode2 |= (0x1 << 5);
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break;
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case 256:
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break;
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}
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/* set rate */
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snd_soc_component_write(component, AK4535_MODE2, mode2);
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return 0;
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}
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static int ak4535_set_dai_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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u8 mode1 = 0;
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/* interface format */
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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mode1 = 0x0002;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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mode1 = 0x0001;
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break;
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default:
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return -EINVAL;
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}
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/* use 32 fs for BCLK to save power */
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mode1 |= 0x4;
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snd_soc_component_write(component, AK4535_MODE1, mode1);
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return 0;
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}
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static int ak4535_mute(struct snd_soc_dai *dai, int mute, int direction)
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{
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struct snd_soc_component *component = dai->component;
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u16 mute_reg = snd_soc_component_read(component, AK4535_DAC);
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if (!mute)
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snd_soc_component_write(component, AK4535_DAC, mute_reg & ~0x20);
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else
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snd_soc_component_write(component, AK4535_DAC, mute_reg | 0x20);
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return 0;
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}
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static int ak4535_set_bias_level(struct snd_soc_component *component,
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enum snd_soc_bias_level level)
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{
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switch (level) {
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case SND_SOC_BIAS_ON:
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snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0);
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break;
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case SND_SOC_BIAS_PREPARE:
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snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0x20);
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break;
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case SND_SOC_BIAS_STANDBY:
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snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0x80);
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snd_soc_component_update_bits(component, AK4535_PM2, 0x80, 0);
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break;
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case SND_SOC_BIAS_OFF:
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snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0);
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break;
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}
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return 0;
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}
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#define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
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SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
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SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
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static const struct snd_soc_dai_ops ak4535_dai_ops = {
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.hw_params = ak4535_hw_params,
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.set_fmt = ak4535_set_dai_fmt,
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.mute_stream = ak4535_mute,
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.set_sysclk = ak4535_set_dai_sysclk,
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.no_capture_mute = 1,
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};
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static struct snd_soc_dai_driver ak4535_dai = {
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.name = "ak4535-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = AK4535_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.capture = {
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.stream_name = "Capture",
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.channels_min = 1,
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.channels_max = 2,
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.rates = AK4535_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.ops = &ak4535_dai_ops,
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};
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static int ak4535_resume(struct snd_soc_component *component)
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{
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snd_soc_component_cache_sync(component);
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return 0;
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}
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static const struct regmap_config ak4535_regmap = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = AK4535_STATUS,
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.volatile_reg = ak4535_volatile,
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.cache_type = REGCACHE_RBTREE,
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.reg_defaults = ak4535_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(ak4535_reg_defaults),
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};
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static const struct snd_soc_component_driver soc_component_dev_ak4535 = {
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.resume = ak4535_resume,
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.set_bias_level = ak4535_set_bias_level,
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.controls = ak4535_snd_controls,
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.num_controls = ARRAY_SIZE(ak4535_snd_controls),
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.dapm_widgets = ak4535_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(ak4535_dapm_widgets),
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.dapm_routes = ak4535_audio_map,
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.num_dapm_routes = ARRAY_SIZE(ak4535_audio_map),
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.suspend_bias_off = 1,
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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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};
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static int ak4535_i2c_probe(struct i2c_client *i2c)
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{
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struct ak4535_priv *ak4535;
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int ret;
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ak4535 = devm_kzalloc(&i2c->dev, sizeof(struct ak4535_priv),
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GFP_KERNEL);
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if (ak4535 == NULL)
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return -ENOMEM;
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ak4535->regmap = devm_regmap_init_i2c(i2c, &ak4535_regmap);
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if (IS_ERR(ak4535->regmap)) {
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ret = PTR_ERR(ak4535->regmap);
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dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
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return ret;
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}
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i2c_set_clientdata(i2c, ak4535);
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ret = devm_snd_soc_register_component(&i2c->dev,
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&soc_component_dev_ak4535, &ak4535_dai, 1);
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return ret;
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}
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static const struct i2c_device_id ak4535_i2c_id[] = {
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{ "ak4535", 0 },
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{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
|
|
|
|
static struct i2c_driver ak4535_i2c_driver = {
|
|
.driver = {
|
|
.name = "ak4535",
|
|
},
|
|
.probe_new = ak4535_i2c_probe,
|
|
.id_table = ak4535_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(ak4535_i2c_driver);
|
|
|
|
MODULE_DESCRIPTION("Soc AK4535 driver");
|
|
MODULE_AUTHOR("Richard Purdie");
|
|
MODULE_LICENSE("GPL");
|