669 lines
17 KiB
C
669 lines
17 KiB
C
/*
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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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* 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/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/platform_device.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/soc-dapm.h>
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#include <sound/initval.h>
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#include "ak4535.h"
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#define AK4535_VERSION "0.3"
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struct snd_soc_codec_device soc_codec_dev_ak4535;
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/* codec private data */
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struct ak4535_priv {
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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 u16 ak4535_reg[AK4535_CACHEREGNUM] = {
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0x0000, 0x0080, 0x0000, 0x0003,
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0x0002, 0x0000, 0x0011, 0x0001,
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0x0000, 0x0040, 0x0036, 0x0010,
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0x0000, 0x0000, 0x0057, 0x0000,
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};
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/*
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* read ak4535 register cache
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*/
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static inline unsigned int ak4535_read_reg_cache(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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u16 *cache = codec->reg_cache;
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if (reg >= AK4535_CACHEREGNUM)
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return -1;
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return cache[reg];
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}
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/*
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* write ak4535 register cache
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*/
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static inline void ak4535_write_reg_cache(struct snd_soc_codec *codec,
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u16 reg, unsigned int value)
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{
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u16 *cache = codec->reg_cache;
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if (reg >= AK4535_CACHEREGNUM)
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return;
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cache[reg] = value;
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}
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/*
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* write to the AK4535 register space
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*/
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static int ak4535_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int value)
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{
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u8 data[2];
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/* data is
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* D15..D8 AK4535 register offset
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* D7...D0 register data
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*/
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data[0] = reg & 0xff;
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data[1] = value & 0xff;
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ak4535_write_reg_cache(codec, reg, value);
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if (codec->hw_write(codec->control_data, data, 2) == 2)
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return 0;
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else
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return -EIO;
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}
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static int ak4535_sync(struct snd_soc_codec *codec)
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{
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u16 *cache = codec->reg_cache;
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int i, r = 0;
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for (i = 0; i < AK4535_CACHEREGNUM; i++)
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r |= ak4535_write(codec, i, cache[i]);
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return r;
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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 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_add_widgets(struct snd_soc_codec *codec)
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{
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snd_soc_dapm_new_controls(codec, ak4535_dapm_widgets,
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ARRAY_SIZE(ak4535_dapm_widgets));
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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return 0;
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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_codec *codec = codec_dai->codec;
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struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
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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_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_device *socdev = rtd->socdev;
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struct snd_soc_codec *codec = socdev->card->codec;
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struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
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u8 mode2 = ak4535_read_reg_cache(codec, 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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ak4535_write(codec, 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_codec *codec = codec_dai->codec;
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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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ak4535_write(codec, 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)
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{
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struct snd_soc_codec *codec = dai->codec;
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u16 mute_reg = ak4535_read_reg_cache(codec, AK4535_DAC) & 0xffdf;
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if (!mute)
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ak4535_write(codec, AK4535_DAC, mute_reg);
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else
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ak4535_write(codec, 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_codec *codec,
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enum snd_soc_bias_level level)
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{
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u16 i;
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switch (level) {
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case SND_SOC_BIAS_ON:
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ak4535_mute(codec->dai, 0);
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break;
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case SND_SOC_BIAS_PREPARE:
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ak4535_mute(codec->dai, 1);
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break;
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case SND_SOC_BIAS_STANDBY:
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i = ak4535_read_reg_cache(codec, AK4535_PM1);
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ak4535_write(codec, AK4535_PM1, i | 0x80);
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i = ak4535_read_reg_cache(codec, AK4535_PM2);
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ak4535_write(codec, AK4535_PM2, i & (~0x80));
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break;
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case SND_SOC_BIAS_OFF:
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i = ak4535_read_reg_cache(codec, AK4535_PM1);
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ak4535_write(codec, AK4535_PM1, i & (~0x80));
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break;
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}
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codec->bias_level = level;
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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 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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.digital_mute = ak4535_mute,
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.set_sysclk = ak4535_set_dai_sysclk,
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};
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struct snd_soc_dai ak4535_dai = {
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.name = "AK4535",
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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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EXPORT_SYMBOL_GPL(ak4535_dai);
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static int ak4535_suspend(struct platform_device *pdev, pm_message_t state)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = socdev->card->codec;
|
|
|
|
ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
return 0;
|
|
}
|
|
|
|
static int ak4535_resume(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
ak4535_sync(codec);
|
|
ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* initialise the AK4535 driver
|
|
* register the mixer and dsp interfaces with the kernel
|
|
*/
|
|
static int ak4535_init(struct snd_soc_device *socdev)
|
|
{
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
int ret = 0;
|
|
|
|
codec->name = "AK4535";
|
|
codec->owner = THIS_MODULE;
|
|
codec->read = ak4535_read_reg_cache;
|
|
codec->write = ak4535_write;
|
|
codec->set_bias_level = ak4535_set_bias_level;
|
|
codec->dai = &ak4535_dai;
|
|
codec->num_dai = 1;
|
|
codec->reg_cache_size = ARRAY_SIZE(ak4535_reg);
|
|
codec->reg_cache = kmemdup(ak4535_reg, sizeof(ak4535_reg), GFP_KERNEL);
|
|
|
|
if (codec->reg_cache == NULL)
|
|
return -ENOMEM;
|
|
|
|
/* register pcms */
|
|
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "ak4535: failed to create pcms\n");
|
|
goto pcm_err;
|
|
}
|
|
|
|
/* power on device */
|
|
ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
|
|
snd_soc_add_controls(codec, ak4535_snd_controls,
|
|
ARRAY_SIZE(ak4535_snd_controls));
|
|
ak4535_add_widgets(codec);
|
|
|
|
return ret;
|
|
|
|
pcm_err:
|
|
kfree(codec->reg_cache);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct snd_soc_device *ak4535_socdev;
|
|
|
|
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
|
|
|
static int ak4535_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct snd_soc_device *socdev = ak4535_socdev;
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
int ret;
|
|
|
|
i2c_set_clientdata(i2c, codec);
|
|
codec->control_data = i2c;
|
|
|
|
ret = ak4535_init(socdev);
|
|
if (ret < 0)
|
|
printk(KERN_ERR "failed to initialise AK4535\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ak4535_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct snd_soc_codec *codec = i2c_get_clientdata(client);
|
|
kfree(codec->reg_cache);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id ak4535_i2c_id[] = {
|
|
{ "ak4535", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
|
|
|
|
static struct i2c_driver ak4535_i2c_driver = {
|
|
.driver = {
|
|
.name = "AK4535 I2C Codec",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = ak4535_i2c_probe,
|
|
.remove = ak4535_i2c_remove,
|
|
.id_table = ak4535_i2c_id,
|
|
};
|
|
|
|
static int ak4535_add_i2c_device(struct platform_device *pdev,
|
|
const struct ak4535_setup_data *setup)
|
|
{
|
|
struct i2c_board_info info;
|
|
struct i2c_adapter *adapter;
|
|
struct i2c_client *client;
|
|
int ret;
|
|
|
|
ret = i2c_add_driver(&ak4535_i2c_driver);
|
|
if (ret != 0) {
|
|
dev_err(&pdev->dev, "can't add i2c driver\n");
|
|
return ret;
|
|
}
|
|
|
|
memset(&info, 0, sizeof(struct i2c_board_info));
|
|
info.addr = setup->i2c_address;
|
|
strlcpy(info.type, "ak4535", I2C_NAME_SIZE);
|
|
|
|
adapter = i2c_get_adapter(setup->i2c_bus);
|
|
if (!adapter) {
|
|
dev_err(&pdev->dev, "can't get i2c adapter %d\n",
|
|
setup->i2c_bus);
|
|
goto err_driver;
|
|
}
|
|
|
|
client = i2c_new_device(adapter, &info);
|
|
i2c_put_adapter(adapter);
|
|
if (!client) {
|
|
dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
|
|
(unsigned int)info.addr);
|
|
goto err_driver;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_driver:
|
|
i2c_del_driver(&ak4535_i2c_driver);
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
static int ak4535_probe(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct ak4535_setup_data *setup;
|
|
struct snd_soc_codec *codec;
|
|
struct ak4535_priv *ak4535;
|
|
int ret;
|
|
|
|
printk(KERN_INFO "AK4535 Audio Codec %s", AK4535_VERSION);
|
|
|
|
setup = socdev->codec_data;
|
|
codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
|
|
if (codec == NULL)
|
|
return -ENOMEM;
|
|
|
|
ak4535 = kzalloc(sizeof(struct ak4535_priv), GFP_KERNEL);
|
|
if (ak4535 == NULL) {
|
|
kfree(codec);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
snd_soc_codec_set_drvdata(codec, ak4535);
|
|
socdev->card->codec = codec;
|
|
mutex_init(&codec->mutex);
|
|
INIT_LIST_HEAD(&codec->dapm_widgets);
|
|
INIT_LIST_HEAD(&codec->dapm_paths);
|
|
|
|
ak4535_socdev = socdev;
|
|
ret = -ENODEV;
|
|
|
|
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
|
if (setup->i2c_address) {
|
|
codec->hw_write = (hw_write_t)i2c_master_send;
|
|
ret = ak4535_add_i2c_device(pdev, setup);
|
|
}
|
|
#endif
|
|
|
|
if (ret != 0) {
|
|
kfree(snd_soc_codec_get_drvdata(codec));
|
|
kfree(codec);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* power down chip */
|
|
static int ak4535_remove(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
|
|
if (codec->control_data)
|
|
ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
|
|
snd_soc_free_pcms(socdev);
|
|
snd_soc_dapm_free(socdev);
|
|
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
|
if (codec->control_data)
|
|
i2c_unregister_device(codec->control_data);
|
|
i2c_del_driver(&ak4535_i2c_driver);
|
|
#endif
|
|
kfree(snd_soc_codec_get_drvdata(codec));
|
|
kfree(codec);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct snd_soc_codec_device soc_codec_dev_ak4535 = {
|
|
.probe = ak4535_probe,
|
|
.remove = ak4535_remove,
|
|
.suspend = ak4535_suspend,
|
|
.resume = ak4535_resume,
|
|
};
|
|
EXPORT_SYMBOL_GPL(soc_codec_dev_ak4535);
|
|
|
|
static int __init ak4535_modinit(void)
|
|
{
|
|
return snd_soc_register_dai(&ak4535_dai);
|
|
}
|
|
module_init(ak4535_modinit);
|
|
|
|
static void __exit ak4535_exit(void)
|
|
{
|
|
snd_soc_unregister_dai(&ak4535_dai);
|
|
}
|
|
module_exit(ak4535_exit);
|
|
|
|
MODULE_DESCRIPTION("Soc AK4535 driver");
|
|
MODULE_AUTHOR("Richard Purdie");
|
|
MODULE_LICENSE("GPL");
|