forked from Minki/linux
788 lines
19 KiB
C
788 lines
19 KiB
C
/*
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* wm8731.c -- WM8731 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/slab.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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#include <linux/spi/spi.h>
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#include <linux/of_device.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 "wm8731.h"
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#define WM8731_NUM_SUPPLIES 4
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static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = {
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"AVDD",
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"HPVDD",
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"DCVDD",
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"DBVDD",
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};
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/* codec private data */
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struct wm8731_priv {
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struct regmap *regmap;
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struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
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unsigned int sysclk;
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int sysclk_type;
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int playback_fs;
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bool deemph;
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};
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/*
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* wm8731 register cache
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*/
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static const struct reg_default wm8731_reg_defaults[] = {
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{ 0, 0x0097 },
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{ 1, 0x0097 },
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{ 2, 0x0079 },
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{ 3, 0x0079 },
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{ 4, 0x000a },
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{ 5, 0x0008 },
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{ 6, 0x009f },
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{ 7, 0x000a },
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{ 8, 0x0000 },
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{ 9, 0x0000 },
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};
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static bool wm8731_volatile(struct device *dev, unsigned int reg)
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{
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return reg == WM8731_RESET;
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}
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static bool wm8731_writeable(struct device *dev, unsigned int reg)
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{
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return reg <= WM8731_RESET;
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}
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#define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0)
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static const char *wm8731_input_select[] = {"Line In", "Mic"};
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static const struct soc_enum wm8731_insel_enum =
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SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select);
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static int wm8731_deemph[] = { 0, 32000, 44100, 48000 };
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static int wm8731_set_deemph(struct snd_soc_codec *codec)
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{
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struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
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int val, i, best;
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/* If we're using deemphasis select the nearest available sample
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* rate.
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*/
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if (wm8731->deemph) {
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best = 1;
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for (i = 2; i < ARRAY_SIZE(wm8731_deemph); i++) {
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if (abs(wm8731_deemph[i] - wm8731->playback_fs) <
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abs(wm8731_deemph[best] - wm8731->playback_fs))
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best = i;
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}
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val = best << 1;
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} else {
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best = 0;
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val = 0;
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}
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dev_dbg(codec->dev, "Set deemphasis %d (%dHz)\n",
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best, wm8731_deemph[best]);
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return snd_soc_update_bits(codec, WM8731_APDIGI, 0x6, val);
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}
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static int wm8731_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 wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
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ucontrol->value.enumerated.item[0] = wm8731->deemph;
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return 0;
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}
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static int wm8731_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 wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
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int deemph = ucontrol->value.enumerated.item[0];
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int ret = 0;
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if (deemph > 1)
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return -EINVAL;
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mutex_lock(&codec->mutex);
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if (wm8731->deemph != deemph) {
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wm8731->deemph = deemph;
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wm8731_set_deemph(codec);
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ret = 1;
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}
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mutex_unlock(&codec->mutex);
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return ret;
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}
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static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0);
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static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0);
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static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
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static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 2000, 0);
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static const struct snd_kcontrol_new wm8731_snd_controls[] = {
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SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V,
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0, 127, 0, out_tlv),
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SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V,
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7, 1, 0),
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SOC_DOUBLE_R_TLV("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0,
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in_tlv),
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SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1),
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SOC_SINGLE_TLV("Mic Boost Volume", WM8731_APANA, 0, 1, 0, mic_tlv),
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SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1),
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SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1,
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sidetone_tlv),
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SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1),
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SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0),
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SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
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wm8731_get_deemph, wm8731_put_deemph),
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};
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/* Output Mixer */
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static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = {
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SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0),
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SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0),
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SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0),
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};
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/* Input mux */
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static const struct snd_kcontrol_new wm8731_input_mux_controls =
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SOC_DAPM_ENUM("Input Select", wm8731_insel_enum);
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static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
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SND_SOC_DAPM_SUPPLY("ACTIVE",WM8731_ACTIVE, 0, 0, NULL, 0),
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SND_SOC_DAPM_SUPPLY("OSC", WM8731_PWR, 5, 1, NULL, 0),
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SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1,
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&wm8731_output_mixer_controls[0],
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ARRAY_SIZE(wm8731_output_mixer_controls)),
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SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1),
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SND_SOC_DAPM_OUTPUT("LOUT"),
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SND_SOC_DAPM_OUTPUT("LHPOUT"),
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SND_SOC_DAPM_OUTPUT("ROUT"),
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SND_SOC_DAPM_OUTPUT("RHPOUT"),
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SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1),
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SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls),
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SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0),
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SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1),
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SND_SOC_DAPM_INPUT("MICIN"),
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SND_SOC_DAPM_INPUT("RLINEIN"),
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SND_SOC_DAPM_INPUT("LLINEIN"),
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};
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static int wm8731_check_osc(struct snd_soc_dapm_widget *source,
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struct snd_soc_dapm_widget *sink)
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{
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struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(source->codec);
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return wm8731->sysclk_type == WM8731_SYSCLK_XTAL;
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}
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static const struct snd_soc_dapm_route wm8731_intercon[] = {
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{"DAC", NULL, "OSC", wm8731_check_osc},
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{"ADC", NULL, "OSC", wm8731_check_osc},
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{"DAC", NULL, "ACTIVE"},
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{"ADC", NULL, "ACTIVE"},
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/* output mixer */
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{"Output Mixer", "Line Bypass Switch", "Line Input"},
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{"Output Mixer", "HiFi Playback Switch", "DAC"},
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{"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
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/* outputs */
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{"RHPOUT", NULL, "Output Mixer"},
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{"ROUT", NULL, "Output Mixer"},
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{"LHPOUT", NULL, "Output Mixer"},
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{"LOUT", NULL, "Output Mixer"},
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/* input mux */
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{"Input Mux", "Line In", "Line Input"},
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{"Input Mux", "Mic", "Mic Bias"},
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{"ADC", NULL, "Input Mux"},
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/* inputs */
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{"Line Input", NULL, "LLINEIN"},
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{"Line Input", NULL, "RLINEIN"},
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{"Mic Bias", NULL, "MICIN"},
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};
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struct _coeff_div {
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u32 mclk;
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u32 rate;
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u16 fs;
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u8 sr:4;
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u8 bosr:1;
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u8 usb:1;
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};
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/* codec mclk clock divider coefficients */
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static const struct _coeff_div coeff_div[] = {
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/* 48k */
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{12288000, 48000, 256, 0x0, 0x0, 0x0},
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{18432000, 48000, 384, 0x0, 0x1, 0x0},
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{12000000, 48000, 250, 0x0, 0x0, 0x1},
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/* 32k */
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{12288000, 32000, 384, 0x6, 0x0, 0x0},
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{18432000, 32000, 576, 0x6, 0x1, 0x0},
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{12000000, 32000, 375, 0x6, 0x0, 0x1},
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/* 8k */
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{12288000, 8000, 1536, 0x3, 0x0, 0x0},
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{18432000, 8000, 2304, 0x3, 0x1, 0x0},
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{11289600, 8000, 1408, 0xb, 0x0, 0x0},
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{16934400, 8000, 2112, 0xb, 0x1, 0x0},
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{12000000, 8000, 1500, 0x3, 0x0, 0x1},
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/* 96k */
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{12288000, 96000, 128, 0x7, 0x0, 0x0},
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{18432000, 96000, 192, 0x7, 0x1, 0x0},
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{12000000, 96000, 125, 0x7, 0x0, 0x1},
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/* 44.1k */
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{11289600, 44100, 256, 0x8, 0x0, 0x0},
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{16934400, 44100, 384, 0x8, 0x1, 0x0},
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{12000000, 44100, 272, 0x8, 0x1, 0x1},
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/* 88.2k */
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{11289600, 88200, 128, 0xf, 0x0, 0x0},
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{16934400, 88200, 192, 0xf, 0x1, 0x0},
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{12000000, 88200, 136, 0xf, 0x1, 0x1},
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};
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static inline int get_coeff(int mclk, int rate)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
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if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
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return i;
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}
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return 0;
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}
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static int wm8731_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 wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
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u16 iface = snd_soc_read(codec, WM8731_IFACE) & 0xfff3;
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int i = get_coeff(wm8731->sysclk, params_rate(params));
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u16 srate = (coeff_div[i].sr << 2) |
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(coeff_div[i].bosr << 1) | coeff_div[i].usb;
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wm8731->playback_fs = params_rate(params);
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snd_soc_write(codec, WM8731_SRATE, srate);
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/* bit size */
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S16_LE:
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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iface |= 0x0004;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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iface |= 0x0008;
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break;
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}
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wm8731_set_deemph(codec);
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snd_soc_write(codec, WM8731_IFACE, iface);
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return 0;
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}
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static int wm8731_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 = snd_soc_read(codec, WM8731_APDIGI) & 0xfff7;
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if (mute)
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snd_soc_write(codec, WM8731_APDIGI, mute_reg | 0x8);
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else
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snd_soc_write(codec, WM8731_APDIGI, mute_reg);
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return 0;
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}
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static int wm8731_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 wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
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switch (clk_id) {
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case WM8731_SYSCLK_XTAL:
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case WM8731_SYSCLK_MCLK:
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wm8731->sysclk_type = clk_id;
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break;
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default:
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return -EINVAL;
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}
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switch (freq) {
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case 11289600:
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case 12000000:
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case 12288000:
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case 16934400:
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case 18432000:
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wm8731->sysclk = freq;
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break;
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default:
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return -EINVAL;
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}
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snd_soc_dapm_sync(&codec->dapm);
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return 0;
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}
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static int wm8731_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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u16 iface = 0;
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/* set master/slave audio interface */
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBM_CFM:
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iface |= 0x0040;
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break;
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case SND_SOC_DAIFMT_CBS_CFS:
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break;
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default:
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return -EINVAL;
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}
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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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iface |= 0x0002;
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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iface |= 0x0001;
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break;
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case SND_SOC_DAIFMT_DSP_A:
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iface |= 0x0003;
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break;
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case SND_SOC_DAIFMT_DSP_B:
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iface |= 0x0013;
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break;
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default:
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return -EINVAL;
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}
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/* clock inversion */
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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break;
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case SND_SOC_DAIFMT_IB_IF:
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iface |= 0x0090;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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iface |= 0x0080;
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break;
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case SND_SOC_DAIFMT_NB_IF:
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iface |= 0x0010;
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break;
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default:
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return -EINVAL;
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}
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/* set iface */
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snd_soc_write(codec, WM8731_IFACE, iface);
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return 0;
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}
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static int wm8731_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 wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
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int ret;
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u16 reg;
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switch (level) {
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case SND_SOC_BIAS_ON:
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break;
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case SND_SOC_BIAS_PREPARE:
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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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ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
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wm8731->supplies);
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if (ret != 0)
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return ret;
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regcache_sync(wm8731->regmap);
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}
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/* Clear PWROFF, gate CLKOUT, everything else as-is */
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reg = snd_soc_read(codec, WM8731_PWR) & 0xff7f;
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snd_soc_write(codec, WM8731_PWR, reg | 0x0040);
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break;
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case SND_SOC_BIAS_OFF:
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snd_soc_write(codec, WM8731_PWR, 0xffff);
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regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies),
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wm8731->supplies);
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regcache_mark_dirty(wm8731->regmap);
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break;
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}
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codec->dapm.bias_level = level;
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|
return 0;
|
|
}
|
|
|
|
#define WM8731_RATES SNDRV_PCM_RATE_8000_96000
|
|
|
|
#define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
|
|
SNDRV_PCM_FMTBIT_S24_LE)
|
|
|
|
static const struct snd_soc_dai_ops wm8731_dai_ops = {
|
|
.hw_params = wm8731_hw_params,
|
|
.digital_mute = wm8731_mute,
|
|
.set_sysclk = wm8731_set_dai_sysclk,
|
|
.set_fmt = wm8731_set_dai_fmt,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver wm8731_dai = {
|
|
.name = "wm8731-hifi",
|
|
.playback = {
|
|
.stream_name = "Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = WM8731_RATES,
|
|
.formats = WM8731_FORMATS,},
|
|
.capture = {
|
|
.stream_name = "Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = WM8731_RATES,
|
|
.formats = WM8731_FORMATS,},
|
|
.ops = &wm8731_dai_ops,
|
|
.symmetric_rates = 1,
|
|
};
|
|
|
|
#ifdef CONFIG_PM
|
|
static int wm8731_suspend(struct snd_soc_codec *codec)
|
|
{
|
|
wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm8731_resume(struct snd_soc_codec *codec)
|
|
{
|
|
wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
#define wm8731_suspend NULL
|
|
#define wm8731_resume NULL
|
|
#endif
|
|
|
|
static int wm8731_probe(struct snd_soc_codec *codec)
|
|
{
|
|
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
|
|
int ret = 0, i;
|
|
|
|
codec->control_data = wm8731->regmap;
|
|
ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++)
|
|
wm8731->supplies[i].supply = wm8731_supply_names[i];
|
|
|
|
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies),
|
|
wm8731->supplies);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
|
|
wm8731->supplies);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
|
|
goto err_regulator_get;
|
|
}
|
|
|
|
ret = wm8731_reset(codec);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
|
|
goto err_regulator_enable;
|
|
}
|
|
|
|
wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
|
|
/* Latch the update bits */
|
|
snd_soc_update_bits(codec, WM8731_LOUT1V, 0x100, 0);
|
|
snd_soc_update_bits(codec, WM8731_ROUT1V, 0x100, 0);
|
|
snd_soc_update_bits(codec, WM8731_LINVOL, 0x100, 0);
|
|
snd_soc_update_bits(codec, WM8731_RINVOL, 0x100, 0);
|
|
|
|
/* Disable bypass path by default */
|
|
snd_soc_update_bits(codec, WM8731_APANA, 0x8, 0);
|
|
|
|
/* Regulators will have been enabled by bias management */
|
|
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
|
|
|
|
return 0;
|
|
|
|
err_regulator_enable:
|
|
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
|
|
err_regulator_get:
|
|
regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* power down chip */
|
|
static int wm8731_remove(struct snd_soc_codec *codec)
|
|
{
|
|
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
|
|
|
|
wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
|
|
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
|
|
regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_codec_driver soc_codec_dev_wm8731 = {
|
|
.probe = wm8731_probe,
|
|
.remove = wm8731_remove,
|
|
.suspend = wm8731_suspend,
|
|
.resume = wm8731_resume,
|
|
.set_bias_level = wm8731_set_bias_level,
|
|
.dapm_widgets = wm8731_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
|
|
.dapm_routes = wm8731_intercon,
|
|
.num_dapm_routes = ARRAY_SIZE(wm8731_intercon),
|
|
.controls = wm8731_snd_controls,
|
|
.num_controls = ARRAY_SIZE(wm8731_snd_controls),
|
|
};
|
|
|
|
static const struct of_device_id wm8731_of_match[] = {
|
|
{ .compatible = "wlf,wm8731", },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, wm8731_of_match);
|
|
|
|
static const struct regmap_config wm8731_regmap = {
|
|
.reg_bits = 7,
|
|
.val_bits = 9,
|
|
|
|
.max_register = WM8731_RESET,
|
|
.volatile_reg = wm8731_volatile,
|
|
.writeable_reg = wm8731_writeable,
|
|
|
|
.cache_type = REGCACHE_RBTREE,
|
|
.reg_defaults = wm8731_reg_defaults,
|
|
.num_reg_defaults = ARRAY_SIZE(wm8731_reg_defaults),
|
|
};
|
|
|
|
#if defined(CONFIG_SPI_MASTER)
|
|
static int __devinit wm8731_spi_probe(struct spi_device *spi)
|
|
{
|
|
struct wm8731_priv *wm8731;
|
|
int ret;
|
|
|
|
wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL);
|
|
if (wm8731 == NULL)
|
|
return -ENOMEM;
|
|
|
|
wm8731->regmap = regmap_init_spi(spi, &wm8731_regmap);
|
|
if (IS_ERR(wm8731->regmap)) {
|
|
ret = PTR_ERR(wm8731->regmap);
|
|
dev_err(&spi->dev, "Failed to allocate register map: %d\n",
|
|
ret);
|
|
goto err;
|
|
}
|
|
|
|
spi_set_drvdata(spi, wm8731);
|
|
|
|
ret = snd_soc_register_codec(&spi->dev,
|
|
&soc_codec_dev_wm8731, &wm8731_dai, 1);
|
|
if (ret != 0) {
|
|
dev_err(&spi->dev, "Failed to register CODEC: %d\n", ret);
|
|
goto err_regmap;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_regmap:
|
|
regmap_exit(wm8731->regmap);
|
|
err:
|
|
kfree(wm8731);
|
|
return ret;
|
|
}
|
|
|
|
static int __devexit wm8731_spi_remove(struct spi_device *spi)
|
|
{
|
|
struct wm8731_priv *wm8731 = spi_get_drvdata(spi);
|
|
|
|
snd_soc_unregister_codec(&spi->dev);
|
|
regmap_exit(wm8731->regmap);
|
|
kfree(wm8731);
|
|
return 0;
|
|
}
|
|
|
|
static struct spi_driver wm8731_spi_driver = {
|
|
.driver = {
|
|
.name = "wm8731",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = wm8731_of_match,
|
|
},
|
|
.probe = wm8731_spi_probe,
|
|
.remove = __devexit_p(wm8731_spi_remove),
|
|
};
|
|
#endif /* CONFIG_SPI_MASTER */
|
|
|
|
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
|
static __devinit int wm8731_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct wm8731_priv *wm8731;
|
|
int ret;
|
|
|
|
wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL);
|
|
if (wm8731 == NULL)
|
|
return -ENOMEM;
|
|
|
|
wm8731->regmap = regmap_init_i2c(i2c, &wm8731_regmap);
|
|
if (IS_ERR(wm8731->regmap)) {
|
|
ret = PTR_ERR(wm8731->regmap);
|
|
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
|
|
ret);
|
|
goto err;
|
|
}
|
|
|
|
i2c_set_clientdata(i2c, wm8731);
|
|
|
|
ret = snd_soc_register_codec(&i2c->dev,
|
|
&soc_codec_dev_wm8731, &wm8731_dai, 1);
|
|
if (ret != 0) {
|
|
dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
|
|
goto err_regmap;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_regmap:
|
|
regmap_exit(wm8731->regmap);
|
|
err:
|
|
kfree(wm8731);
|
|
return ret;
|
|
}
|
|
|
|
static __devexit int wm8731_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct wm8731_priv *wm8731 = i2c_get_clientdata(client);
|
|
snd_soc_unregister_codec(&client->dev);
|
|
regmap_exit(wm8731->regmap);
|
|
kfree(wm8731);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id wm8731_i2c_id[] = {
|
|
{ "wm8731", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
|
|
|
|
static struct i2c_driver wm8731_i2c_driver = {
|
|
.driver = {
|
|
.name = "wm8731",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = wm8731_of_match,
|
|
},
|
|
.probe = wm8731_i2c_probe,
|
|
.remove = __devexit_p(wm8731_i2c_remove),
|
|
.id_table = wm8731_i2c_id,
|
|
};
|
|
#endif
|
|
|
|
static int __init wm8731_modinit(void)
|
|
{
|
|
int ret = 0;
|
|
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
|
ret = i2c_add_driver(&wm8731_i2c_driver);
|
|
if (ret != 0) {
|
|
printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n",
|
|
ret);
|
|
}
|
|
#endif
|
|
#if defined(CONFIG_SPI_MASTER)
|
|
ret = spi_register_driver(&wm8731_spi_driver);
|
|
if (ret != 0) {
|
|
printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n",
|
|
ret);
|
|
}
|
|
#endif
|
|
return ret;
|
|
}
|
|
module_init(wm8731_modinit);
|
|
|
|
static void __exit wm8731_exit(void)
|
|
{
|
|
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
|
i2c_del_driver(&wm8731_i2c_driver);
|
|
#endif
|
|
#if defined(CONFIG_SPI_MASTER)
|
|
spi_unregister_driver(&wm8731_spi_driver);
|
|
#endif
|
|
}
|
|
module_exit(wm8731_exit);
|
|
|
|
MODULE_DESCRIPTION("ASoC WM8731 driver");
|
|
MODULE_AUTHOR("Richard Purdie");
|
|
MODULE_LICENSE("GPL");
|