7a79e94e97
CONFIG_HOTPLUG is going away as an option. As result the __dev* markings will be going away. Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
652 lines
17 KiB
C
652 lines
17 KiB
C
/*
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* ak4641.c -- AK4641 ALSA Soc Audio driver
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*
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* Copyright (C) 2008 Harald Welte <laforge@gnufiish.org>
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* Copyright (C) 2011 Dmitry Artamonow <mad_soft@inbox.ru>
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*
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* Based on ak4535.c by Richard Purdie
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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/init.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/pm.h>
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#include <linux/i2c.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 <sound/tlv.h>
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#include <sound/ak4641.h>
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#include "ak4641.h"
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/* codec private data */
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struct ak4641_priv {
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unsigned int sysclk;
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int deemph;
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int playback_fs;
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};
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/*
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* ak4641 register cache
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*/
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static const u8 ak4641_reg[AK4641_CACHEREGNUM] = {
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0x00, 0x80, 0x00, 0x80,
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0x02, 0x00, 0x11, 0x05,
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0x00, 0x00, 0x36, 0x10,
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0x00, 0x00, 0x57, 0x00,
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0x88, 0x88, 0x08, 0x08
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};
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static const int deemph_settings[] = {44100, 0, 48000, 32000};
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static int ak4641_set_deemph(struct snd_soc_codec *codec)
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{
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struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
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int i, best = 0;
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for (i = 0 ; i < ARRAY_SIZE(deemph_settings); i++) {
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/* if deemphasis is on, select the nearest available rate */
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if (ak4641->deemph && deemph_settings[i] != 0 &&
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abs(deemph_settings[i] - ak4641->playback_fs) <
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abs(deemph_settings[best] - ak4641->playback_fs))
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best = i;
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if (!ak4641->deemph && deemph_settings[i] == 0)
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best = i;
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}
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dev_dbg(codec->dev, "Set deemphasis %d\n", best);
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return snd_soc_update_bits(codec, AK4641_DAC, 0x3, best);
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}
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static int ak4641_put_deemph(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_codec *codec = snd_kcontrol_chip(kcontrol);
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struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
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int deemph = ucontrol->value.enumerated.item[0];
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if (deemph > 1)
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return -EINVAL;
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ak4641->deemph = deemph;
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return ak4641_set_deemph(codec);
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}
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static int ak4641_get_deemph(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_codec *codec = snd_kcontrol_chip(kcontrol);
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struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
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ucontrol->value.enumerated.item[0] = ak4641->deemph;
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return 0;
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};
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static const char *ak4641_mono_out[] = {"(L + R)/2", "Hi-Z"};
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static const char *ak4641_hp_out[] = {"Stereo", "Mono"};
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static const char *ak4641_mic_select[] = {"Internal", "External"};
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static const char *ak4641_mic_or_dac[] = {"Microphone", "Voice DAC"};
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static const DECLARE_TLV_DB_SCALE(mono_gain_tlv, -1700, 2300, 0);
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static const DECLARE_TLV_DB_SCALE(mic_boost_tlv, 0, 2000, 0);
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static const DECLARE_TLV_DB_SCALE(eq_tlv, -1050, 150, 0);
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static const DECLARE_TLV_DB_SCALE(master_tlv, -12750, 50, 0);
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static const DECLARE_TLV_DB_SCALE(mic_stereo_sidetone_tlv, -2700, 300, 0);
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static const DECLARE_TLV_DB_SCALE(mic_mono_sidetone_tlv, -400, 400, 0);
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static const DECLARE_TLV_DB_SCALE(capture_tlv, -800, 50, 0);
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static const DECLARE_TLV_DB_SCALE(alc_tlv, -800, 50, 0);
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static const DECLARE_TLV_DB_SCALE(aux_in_tlv, -2100, 300, 0);
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static const struct soc_enum ak4641_mono_out_enum =
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SOC_ENUM_SINGLE(AK4641_SIG1, 6, 2, ak4641_mono_out);
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static const struct soc_enum ak4641_hp_out_enum =
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SOC_ENUM_SINGLE(AK4641_MODE2, 2, 2, ak4641_hp_out);
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static const struct soc_enum ak4641_mic_select_enum =
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SOC_ENUM_SINGLE(AK4641_MIC, 1, 2, ak4641_mic_select);
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static const struct soc_enum ak4641_mic_or_dac_enum =
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SOC_ENUM_SINGLE(AK4641_BTIF, 4, 2, ak4641_mic_or_dac);
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static const struct snd_kcontrol_new ak4641_snd_controls[] = {
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SOC_ENUM("Mono 1 Output", ak4641_mono_out_enum),
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SOC_SINGLE_TLV("Mono 1 Gain Volume", AK4641_SIG1, 7, 1, 1,
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mono_gain_tlv),
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SOC_ENUM("Headphone Output", ak4641_hp_out_enum),
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SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
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ak4641_get_deemph, ak4641_put_deemph),
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SOC_SINGLE_TLV("Mic Boost Volume", AK4641_MIC, 0, 1, 0, mic_boost_tlv),
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SOC_SINGLE("ALC Operation Time", AK4641_TIMER, 0, 3, 0),
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SOC_SINGLE("ALC Recovery Time", AK4641_TIMER, 2, 3, 0),
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SOC_SINGLE("ALC ZC Time", AK4641_TIMER, 4, 3, 0),
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SOC_SINGLE("ALC 1 Switch", AK4641_ALC1, 5, 1, 0),
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SOC_SINGLE_TLV("ALC Volume", AK4641_ALC2, 0, 71, 0, alc_tlv),
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SOC_SINGLE("Left Out Enable Switch", AK4641_SIG2, 1, 1, 0),
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SOC_SINGLE("Right Out Enable Switch", AK4641_SIG2, 0, 1, 0),
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SOC_SINGLE_TLV("Capture Volume", AK4641_PGA, 0, 71, 0, capture_tlv),
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SOC_DOUBLE_R_TLV("Master Playback Volume", AK4641_LATT,
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AK4641_RATT, 0, 255, 1, master_tlv),
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SOC_SINGLE_TLV("AUX In Volume", AK4641_VOL, 0, 15, 0, aux_in_tlv),
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SOC_SINGLE("Equalizer Switch", AK4641_DAC, 2, 1, 0),
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SOC_SINGLE_TLV("EQ1 100 Hz Volume", AK4641_EQLO, 0, 15, 1, eq_tlv),
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SOC_SINGLE_TLV("EQ2 250 Hz Volume", AK4641_EQLO, 4, 15, 1, eq_tlv),
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SOC_SINGLE_TLV("EQ3 1 kHz Volume", AK4641_EQMID, 0, 15, 1, eq_tlv),
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SOC_SINGLE_TLV("EQ4 3.5 kHz Volume", AK4641_EQMID, 4, 15, 1, eq_tlv),
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SOC_SINGLE_TLV("EQ5 10 kHz Volume", AK4641_EQHI, 0, 15, 1, eq_tlv),
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};
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/* Mono 1 Mixer */
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static const struct snd_kcontrol_new ak4641_mono1_mixer_controls[] = {
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SOC_DAPM_SINGLE_TLV("Mic Mono Sidetone Volume", AK4641_VOL, 7, 1, 0,
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mic_mono_sidetone_tlv),
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SOC_DAPM_SINGLE("Mic Mono Sidetone Switch", AK4641_SIG1, 4, 1, 0),
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SOC_DAPM_SINGLE("Mono Playback Switch", AK4641_SIG1, 5, 1, 0),
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};
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/* Stereo Mixer */
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static const struct snd_kcontrol_new ak4641_stereo_mixer_controls[] = {
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SOC_DAPM_SINGLE_TLV("Mic Sidetone Volume", AK4641_VOL, 4, 7, 0,
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mic_stereo_sidetone_tlv),
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SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4641_SIG2, 4, 1, 0),
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SOC_DAPM_SINGLE("Playback Switch", AK4641_SIG2, 7, 1, 0),
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SOC_DAPM_SINGLE("Aux Bypass Switch", AK4641_SIG2, 5, 1, 0),
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};
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/* Input Mixer */
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static const struct snd_kcontrol_new ak4641_input_mixer_controls[] = {
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SOC_DAPM_SINGLE("Mic Capture Switch", AK4641_MIC, 2, 1, 0),
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SOC_DAPM_SINGLE("Aux Capture Switch", AK4641_MIC, 5, 1, 0),
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};
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/* Mic mux */
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static const struct snd_kcontrol_new ak4641_mic_mux_control =
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SOC_DAPM_ENUM("Mic Select", ak4641_mic_select_enum);
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/* Input mux */
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static const struct snd_kcontrol_new ak4641_input_mux_control =
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SOC_DAPM_ENUM("Input Select", ak4641_mic_or_dac_enum);
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/* mono 2 switch */
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static const struct snd_kcontrol_new ak4641_mono2_control =
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SOC_DAPM_SINGLE("Switch", AK4641_SIG1, 0, 1, 0);
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/* ak4641 dapm widgets */
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static const struct snd_soc_dapm_widget ak4641_dapm_widgets[] = {
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SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
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&ak4641_stereo_mixer_controls[0],
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ARRAY_SIZE(ak4641_stereo_mixer_controls)),
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SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
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&ak4641_mono1_mixer_controls[0],
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ARRAY_SIZE(ak4641_mono1_mixer_controls)),
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SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
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&ak4641_input_mixer_controls[0],
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ARRAY_SIZE(ak4641_input_mixer_controls)),
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SND_SOC_DAPM_MUX("Mic Mux", SND_SOC_NOPM, 0, 0,
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&ak4641_mic_mux_control),
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SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
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&ak4641_input_mux_control),
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SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
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&ak4641_mono2_control),
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SND_SOC_DAPM_OUTPUT("LOUT"),
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SND_SOC_DAPM_OUTPUT("ROUT"),
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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", "HiFi Capture", AK4641_PM1, 0, 0),
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SND_SOC_DAPM_PGA("Mic", AK4641_PM1, 1, 0, NULL, 0),
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SND_SOC_DAPM_PGA("AUX In", AK4641_PM1, 2, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Mono Out", AK4641_PM1, 3, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Line Out", AK4641_PM1, 4, 0, NULL, 0),
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SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AK4641_PM2, 0, 0),
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SND_SOC_DAPM_PGA("Mono Out 2", AK4641_PM2, 3, 0, NULL, 0),
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SND_SOC_DAPM_ADC("Voice ADC", "Voice Capture", AK4641_BTIF, 0, 0),
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SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", AK4641_BTIF, 1, 0),
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SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4641_MIC, 3, 0),
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SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4641_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("AIN"),
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};
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static const struct snd_soc_dapm_route ak4641_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", "Input Mux"},
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{"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
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/* Mono 1 Mixer */
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{"Mono1 Mixer", "Mic Mono Sidetone Switch", "Input Mux"},
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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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{"Mic Mux", "Internal", "Mic Int Bias"},
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{"Mic 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, "Mic Mux"},
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/* Input Mux */
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{"Input Mux", "Microphone", "Mic"},
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{"Input Mux", "Voice DAC", "Voice DAC"},
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/* Line Out */
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{"LOUT", NULL, "Line Out"},
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{"ROUT", NULL, "Line Out"},
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{"Line Out", NULL, "Stereo Mixer"},
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/* Mono 1 Out */
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{"MOUT1", NULL, "Mono Out"},
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{"Mono Out", NULL, "Mono1 Mixer"},
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/* Mono 2 Out */
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{"MOUT2", NULL, "Mono 2 Enable"},
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{"Mono 2 Enable", "Switch", "Mono Out 2"},
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{"Mono Out 2", NULL, "Stereo Mixer"},
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{"Voice ADC", NULL, "Mono 2 Enable"},
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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 ak4641_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 ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
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ak4641->sysclk = freq;
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return 0;
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}
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static int ak4641_i2s_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
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int rate = params_rate(params), fs = 256;
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u8 mode2;
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if (rate)
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fs = ak4641->sysclk / rate;
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else
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return -EINVAL;
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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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mode2 = (0x0 << 5);
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break;
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default:
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dev_err(codec->dev, "Error: unsupported fs=%d\n", fs);
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return -EINVAL;
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}
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snd_soc_update_bits(codec, AK4641_MODE2, (0x3 << 5), mode2);
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/* Update de-emphasis filter for the new rate */
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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ak4641->playback_fs = rate;
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ak4641_set_deemph(codec);
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};
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return 0;
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}
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static int ak4641_pcm_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 btif;
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int ret;
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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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btif = (0x3 << 5);
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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btif = (0x2 << 5);
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break;
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case SND_SOC_DAIFMT_DSP_A: /* MSB after FRM */
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btif = (0x0 << 5);
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break;
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case SND_SOC_DAIFMT_DSP_B: /* MSB during FRM */
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btif = (0x1 << 5);
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break;
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default:
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return -EINVAL;
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}
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ret = snd_soc_update_bits(codec, AK4641_BTIF, (0x3 << 5), btif);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int ak4641_i2s_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 = 0x02;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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mode1 = 0x01;
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break;
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default:
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return -EINVAL;
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}
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return snd_soc_write(codec, AK4641_MODE1, mode1);
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}
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static int ak4641_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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return snd_soc_update_bits(codec, AK4641_DAC, 0x20, mute ? 0x20 : 0);
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}
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static int ak4641_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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struct ak4641_platform_data *pdata = codec->dev->platform_data;
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int ret;
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switch (level) {
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case SND_SOC_BIAS_ON:
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/* unmute */
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snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0);
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break;
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case SND_SOC_BIAS_PREPARE:
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/* mute */
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snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0x20);
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break;
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case SND_SOC_BIAS_STANDBY:
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if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
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if (pdata && gpio_is_valid(pdata->gpio_power))
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gpio_set_value(pdata->gpio_power, 1);
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mdelay(1);
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if (pdata && gpio_is_valid(pdata->gpio_npdn))
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gpio_set_value(pdata->gpio_npdn, 1);
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mdelay(1);
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ret = snd_soc_cache_sync(codec);
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if (ret) {
|
|
dev_err(codec->dev,
|
|
"Failed to sync cache: %d\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0x80);
|
|
snd_soc_update_bits(codec, AK4641_PM2, 0x80, 0);
|
|
break;
|
|
case SND_SOC_BIAS_OFF:
|
|
snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0);
|
|
if (pdata && gpio_is_valid(pdata->gpio_npdn))
|
|
gpio_set_value(pdata->gpio_npdn, 0);
|
|
if (pdata && gpio_is_valid(pdata->gpio_power))
|
|
gpio_set_value(pdata->gpio_power, 0);
|
|
codec->cache_sync = 1;
|
|
break;
|
|
}
|
|
codec->dapm.bias_level = level;
|
|
return 0;
|
|
}
|
|
|
|
#define AK4641_RATES (SNDRV_PCM_RATE_8000_48000)
|
|
#define AK4641_RATES_BT (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
|
|
SNDRV_PCM_RATE_16000)
|
|
#define AK4641_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
|
|
|
|
static const struct snd_soc_dai_ops ak4641_i2s_dai_ops = {
|
|
.hw_params = ak4641_i2s_hw_params,
|
|
.set_fmt = ak4641_i2s_set_dai_fmt,
|
|
.digital_mute = ak4641_mute,
|
|
.set_sysclk = ak4641_set_dai_sysclk,
|
|
};
|
|
|
|
static const struct snd_soc_dai_ops ak4641_pcm_dai_ops = {
|
|
.hw_params = NULL, /* rates are controlled by BT chip */
|
|
.set_fmt = ak4641_pcm_set_dai_fmt,
|
|
.digital_mute = ak4641_mute,
|
|
.set_sysclk = ak4641_set_dai_sysclk,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver ak4641_dai[] = {
|
|
{
|
|
.name = "ak4641-hifi",
|
|
.id = 1,
|
|
.playback = {
|
|
.stream_name = "HiFi Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = AK4641_RATES,
|
|
.formats = AK4641_FORMATS,
|
|
},
|
|
.capture = {
|
|
.stream_name = "HiFi Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = AK4641_RATES,
|
|
.formats = AK4641_FORMATS,
|
|
},
|
|
.ops = &ak4641_i2s_dai_ops,
|
|
.symmetric_rates = 1,
|
|
},
|
|
{
|
|
.name = "ak4641-voice",
|
|
.id = 1,
|
|
.playback = {
|
|
.stream_name = "Voice Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 1,
|
|
.rates = AK4641_RATES_BT,
|
|
.formats = AK4641_FORMATS,
|
|
},
|
|
.capture = {
|
|
.stream_name = "Voice Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 1,
|
|
.rates = AK4641_RATES_BT,
|
|
.formats = AK4641_FORMATS,
|
|
},
|
|
.ops = &ak4641_pcm_dai_ops,
|
|
.symmetric_rates = 1,
|
|
},
|
|
};
|
|
|
|
static int ak4641_suspend(struct snd_soc_codec *codec)
|
|
{
|
|
ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
return 0;
|
|
}
|
|
|
|
static int ak4641_resume(struct snd_soc_codec *codec)
|
|
{
|
|
ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
return 0;
|
|
}
|
|
|
|
static int ak4641_probe(struct snd_soc_codec *codec)
|
|
{
|
|
int ret;
|
|
|
|
ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/* power on device */
|
|
ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ak4641_remove(struct snd_soc_codec *codec)
|
|
{
|
|
ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct snd_soc_codec_driver soc_codec_dev_ak4641 = {
|
|
.probe = ak4641_probe,
|
|
.remove = ak4641_remove,
|
|
.suspend = ak4641_suspend,
|
|
.resume = ak4641_resume,
|
|
.controls = ak4641_snd_controls,
|
|
.num_controls = ARRAY_SIZE(ak4641_snd_controls),
|
|
.dapm_widgets = ak4641_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(ak4641_dapm_widgets),
|
|
.dapm_routes = ak4641_audio_map,
|
|
.num_dapm_routes = ARRAY_SIZE(ak4641_audio_map),
|
|
.set_bias_level = ak4641_set_bias_level,
|
|
.reg_cache_size = ARRAY_SIZE(ak4641_reg),
|
|
.reg_word_size = sizeof(u8),
|
|
.reg_cache_default = ak4641_reg,
|
|
.reg_cache_step = 1,
|
|
};
|
|
|
|
|
|
static int ak4641_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct ak4641_platform_data *pdata = i2c->dev.platform_data;
|
|
struct ak4641_priv *ak4641;
|
|
int ret;
|
|
|
|
ak4641 = devm_kzalloc(&i2c->dev, sizeof(struct ak4641_priv),
|
|
GFP_KERNEL);
|
|
if (!ak4641)
|
|
return -ENOMEM;
|
|
|
|
if (pdata) {
|
|
if (gpio_is_valid(pdata->gpio_power)) {
|
|
ret = gpio_request_one(pdata->gpio_power,
|
|
GPIOF_OUT_INIT_LOW, "ak4641 power");
|
|
if (ret)
|
|
goto err_out;
|
|
}
|
|
if (gpio_is_valid(pdata->gpio_npdn)) {
|
|
ret = gpio_request_one(pdata->gpio_npdn,
|
|
GPIOF_OUT_INIT_LOW, "ak4641 npdn");
|
|
if (ret)
|
|
goto err_gpio;
|
|
|
|
udelay(1); /* > 150 ns */
|
|
gpio_set_value(pdata->gpio_npdn, 1);
|
|
}
|
|
}
|
|
|
|
i2c_set_clientdata(i2c, ak4641);
|
|
|
|
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4641,
|
|
ak4641_dai, ARRAY_SIZE(ak4641_dai));
|
|
if (ret != 0)
|
|
goto err_gpio2;
|
|
|
|
return 0;
|
|
|
|
err_gpio2:
|
|
if (pdata) {
|
|
if (gpio_is_valid(pdata->gpio_power))
|
|
gpio_set_value(pdata->gpio_power, 0);
|
|
if (gpio_is_valid(pdata->gpio_npdn))
|
|
gpio_free(pdata->gpio_npdn);
|
|
}
|
|
err_gpio:
|
|
if (pdata && gpio_is_valid(pdata->gpio_power))
|
|
gpio_free(pdata->gpio_power);
|
|
err_out:
|
|
return ret;
|
|
}
|
|
|
|
static int ak4641_i2c_remove(struct i2c_client *i2c)
|
|
{
|
|
struct ak4641_platform_data *pdata = i2c->dev.platform_data;
|
|
|
|
snd_soc_unregister_codec(&i2c->dev);
|
|
|
|
if (pdata) {
|
|
if (gpio_is_valid(pdata->gpio_power)) {
|
|
gpio_set_value(pdata->gpio_power, 0);
|
|
gpio_free(pdata->gpio_power);
|
|
}
|
|
if (gpio_is_valid(pdata->gpio_npdn))
|
|
gpio_free(pdata->gpio_npdn);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id ak4641_i2c_id[] = {
|
|
{ "ak4641", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, ak4641_i2c_id);
|
|
|
|
static struct i2c_driver ak4641_i2c_driver = {
|
|
.driver = {
|
|
.name = "ak4641",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = ak4641_i2c_probe,
|
|
.remove = ak4641_i2c_remove,
|
|
.id_table = ak4641_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(ak4641_i2c_driver);
|
|
|
|
MODULE_DESCRIPTION("SoC AK4641 driver");
|
|
MODULE_AUTHOR("Harald Welte <laforge@gnufiish.org>");
|
|
MODULE_LICENSE("GPL");
|