622 lines
17 KiB
C
622 lines
17 KiB
C
/*
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* cs42l51.c
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*
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* ASoC Driver for Cirrus Logic CS42L51 codecs
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*
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* Copyright (c) 2010 Arnaud Patard <apatard@mandriva.com>
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*
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* Based on cs4270.c - Copyright (c) Freescale Semiconductor
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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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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* For now:
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* - Only I2C is support. Not SPI
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* - master mode *NOT* supported
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include <sound/initval.h>
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#include <sound/pcm_params.h>
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#include <sound/pcm.h>
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#include <linux/i2c.h>
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#include "cs42l51.h"
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enum master_slave_mode {
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MODE_SLAVE,
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MODE_SLAVE_AUTO,
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MODE_MASTER,
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};
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struct cs42l51_private {
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enum snd_soc_control_type control_type;
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unsigned int mclk;
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unsigned int audio_mode; /* The mode (I2S or left-justified) */
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enum master_slave_mode func;
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};
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#define CS42L51_FORMATS ( \
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SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
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SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
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SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
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SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
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static int cs42l51_fill_cache(struct snd_soc_codec *codec)
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{
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u8 *cache = codec->reg_cache + 1;
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struct i2c_client *i2c_client = to_i2c_client(codec->dev);
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s32 length;
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length = i2c_smbus_read_i2c_block_data(i2c_client,
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CS42L51_FIRSTREG | 0x80, CS42L51_NUMREGS, cache);
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if (length != CS42L51_NUMREGS) {
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dev_err(&i2c_client->dev,
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"I2C read failure, addr=0x%x (ret=%d vs %d)\n",
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i2c_client->addr, length, CS42L51_NUMREGS);
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return -EIO;
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}
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return 0;
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}
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static int cs42l51_get_chan_mix(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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unsigned long value = snd_soc_read(codec, CS42L51_PCM_MIXER)&3;
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switch (value) {
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default:
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case 0:
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ucontrol->value.integer.value[0] = 0;
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break;
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/* same value : (L+R)/2 and (R+L)/2 */
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case 1:
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case 2:
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ucontrol->value.integer.value[0] = 1;
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break;
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case 3:
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ucontrol->value.integer.value[0] = 2;
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break;
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}
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return 0;
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}
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#define CHAN_MIX_NORMAL 0x00
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#define CHAN_MIX_BOTH 0x55
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#define CHAN_MIX_SWAP 0xFF
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static int cs42l51_set_chan_mix(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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unsigned char val;
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switch (ucontrol->value.integer.value[0]) {
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default:
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case 0:
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val = CHAN_MIX_NORMAL;
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break;
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case 1:
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val = CHAN_MIX_BOTH;
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break;
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case 2:
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val = CHAN_MIX_SWAP;
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break;
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}
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snd_soc_write(codec, CS42L51_PCM_MIXER, val);
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return 1;
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}
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static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv, -5150, 50, 0);
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static const DECLARE_TLV_DB_SCALE(tone_tlv, -1050, 150, 0);
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/* This is a lie. after -102 db, it stays at -102 */
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/* maybe a range would be better */
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static const DECLARE_TLV_DB_SCALE(aout_tlv, -11550, 50, 0);
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static const DECLARE_TLV_DB_SCALE(boost_tlv, 1600, 1600, 0);
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static const char *chan_mix[] = {
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"L R",
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"L+R",
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"R L",
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};
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static const struct soc_enum cs42l51_chan_mix =
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SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(chan_mix), chan_mix);
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static const struct snd_kcontrol_new cs42l51_snd_controls[] = {
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SOC_DOUBLE_R_SX_TLV("PCM Playback Volume",
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CS42L51_PCMA_VOL, CS42L51_PCMB_VOL,
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6, 0x19, 0x7F, adc_pcm_tlv),
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SOC_DOUBLE_R("PCM Playback Switch",
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CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 7, 1, 1),
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SOC_DOUBLE_R_SX_TLV("Analog Playback Volume",
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CS42L51_AOUTA_VOL, CS42L51_AOUTB_VOL,
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0, 0x34, 0xE4, aout_tlv),
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SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume",
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CS42L51_ADCA_VOL, CS42L51_ADCB_VOL,
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6, 0x19, 0x7F, adc_pcm_tlv),
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SOC_DOUBLE_R("ADC Mixer Switch",
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CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 7, 1, 1),
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SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL, 3, 1, 0),
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SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL, 2, 1, 0),
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SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL, 1, 1, 0),
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SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL, 0, 0, 0),
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SOC_DOUBLE_TLV("Mic Boost Volume",
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CS42L51_MIC_CTL, 0, 1, 1, 0, boost_tlv),
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SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL, 0, 0xf, 1, tone_tlv),
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SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL, 4, 0xf, 1, tone_tlv),
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SOC_ENUM_EXT("PCM channel mixer",
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cs42l51_chan_mix,
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cs42l51_get_chan_mix, cs42l51_set_chan_mix),
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};
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/*
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* to power down, one must:
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* 1.) Enable the PDN bit
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* 2.) enable power-down for the select channels
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* 3.) disable the PDN bit.
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*/
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static int cs42l51_pdn_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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switch (event) {
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case SND_SOC_DAPM_PRE_PMD:
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snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1,
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CS42L51_POWER_CTL1_PDN,
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CS42L51_POWER_CTL1_PDN);
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break;
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default:
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case SND_SOC_DAPM_POST_PMD:
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snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1,
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CS42L51_POWER_CTL1_PDN, 0);
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break;
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}
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return 0;
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}
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static const char *cs42l51_dac_names[] = {"Direct PCM",
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"DSP PCM", "ADC"};
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static const struct soc_enum cs42l51_dac_mux_enum =
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SOC_ENUM_SINGLE(CS42L51_DAC_CTL, 6, 3, cs42l51_dac_names);
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static const struct snd_kcontrol_new cs42l51_dac_mux_controls =
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SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum);
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static const char *cs42l51_adcl_names[] = {"AIN1 Left", "AIN2 Left",
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"MIC Left", "MIC+preamp Left"};
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static const struct soc_enum cs42l51_adcl_mux_enum =
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SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 4, 4, cs42l51_adcl_names);
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static const struct snd_kcontrol_new cs42l51_adcl_mux_controls =
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SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum);
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static const char *cs42l51_adcr_names[] = {"AIN1 Right", "AIN2 Right",
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"MIC Right", "MIC+preamp Right"};
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static const struct soc_enum cs42l51_adcr_mux_enum =
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SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 6, 4, cs42l51_adcr_names);
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static const struct snd_kcontrol_new cs42l51_adcr_mux_controls =
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SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum);
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static const struct snd_soc_dapm_widget cs42l51_dapm_widgets[] = {
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SND_SOC_DAPM_MICBIAS("Mic Bias", CS42L51_MIC_POWER_CTL, 1, 1),
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SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1, 3, 1, NULL, 0,
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cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
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SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1, 4, 1, NULL, 0,
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cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
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SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture",
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CS42L51_POWER_CTL1, 1, 1,
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cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
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SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture",
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CS42L51_POWER_CTL1, 2, 1,
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cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
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SND_SOC_DAPM_DAC_E("Left DAC", "Left HiFi Playback",
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CS42L51_POWER_CTL1, 5, 1,
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cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
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SND_SOC_DAPM_DAC_E("Right DAC", "Right HiFi Playback",
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CS42L51_POWER_CTL1, 6, 1,
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cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
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/* analog/mic */
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SND_SOC_DAPM_INPUT("AIN1L"),
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SND_SOC_DAPM_INPUT("AIN1R"),
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SND_SOC_DAPM_INPUT("AIN2L"),
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SND_SOC_DAPM_INPUT("AIN2R"),
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SND_SOC_DAPM_INPUT("MICL"),
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SND_SOC_DAPM_INPUT("MICR"),
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SND_SOC_DAPM_MIXER("Mic Preamp Left",
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CS42L51_MIC_POWER_CTL, 2, 1, NULL, 0),
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SND_SOC_DAPM_MIXER("Mic Preamp Right",
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CS42L51_MIC_POWER_CTL, 3, 1, NULL, 0),
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/* HP */
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SND_SOC_DAPM_OUTPUT("HPL"),
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SND_SOC_DAPM_OUTPUT("HPR"),
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/* mux */
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SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM, 0, 0,
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&cs42l51_dac_mux_controls),
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SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM, 0, 0,
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&cs42l51_adcl_mux_controls),
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SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM, 0, 0,
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&cs42l51_adcr_mux_controls),
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};
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static const struct snd_soc_dapm_route cs42l51_routes[] = {
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{"HPL", NULL, "Left DAC"},
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{"HPR", NULL, "Right DAC"},
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{"Left ADC", NULL, "Left PGA"},
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{"Right ADC", NULL, "Right PGA"},
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{"Mic Preamp Left", NULL, "MICL"},
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{"Mic Preamp Right", NULL, "MICR"},
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{"PGA-ADC Mux Left", "AIN1 Left", "AIN1L" },
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{"PGA-ADC Mux Left", "AIN2 Left", "AIN2L" },
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{"PGA-ADC Mux Left", "MIC Left", "MICL" },
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{"PGA-ADC Mux Left", "MIC+preamp Left", "Mic Preamp Left" },
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{"PGA-ADC Mux Right", "AIN1 Right", "AIN1R" },
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{"PGA-ADC Mux Right", "AIN2 Right", "AIN2R" },
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{"PGA-ADC Mux Right", "MIC Right", "MICR" },
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{"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" },
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{"Left PGA", NULL, "PGA-ADC Mux Left"},
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{"Right PGA", NULL, "PGA-ADC Mux Right"},
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};
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static int cs42l51_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int format)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
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switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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case SND_SOC_DAIFMT_LEFT_J:
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case SND_SOC_DAIFMT_RIGHT_J:
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cs42l51->audio_mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
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break;
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default:
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dev_err(codec->dev, "invalid DAI format\n");
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return -EINVAL;
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}
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switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBM_CFM:
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cs42l51->func = MODE_MASTER;
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break;
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case SND_SOC_DAIFMT_CBS_CFS:
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cs42l51->func = MODE_SLAVE_AUTO;
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break;
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default:
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dev_err(codec->dev, "Unknown master/slave configuration\n");
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return -EINVAL;
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}
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return 0;
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}
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struct cs42l51_ratios {
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unsigned int ratio;
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unsigned char speed_mode;
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unsigned char mclk;
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};
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static struct cs42l51_ratios slave_ratios[] = {
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{ 512, CS42L51_QSM_MODE, 0 }, { 768, CS42L51_QSM_MODE, 0 },
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{ 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
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{ 2048, CS42L51_QSM_MODE, 0 }, { 3072, CS42L51_QSM_MODE, 0 },
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{ 256, CS42L51_HSM_MODE, 0 }, { 384, CS42L51_HSM_MODE, 0 },
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{ 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
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{ 1024, CS42L51_HSM_MODE, 0 }, { 1536, CS42L51_HSM_MODE, 0 },
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{ 128, CS42L51_SSM_MODE, 0 }, { 192, CS42L51_SSM_MODE, 0 },
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{ 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
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{ 512, CS42L51_SSM_MODE, 0 }, { 768, CS42L51_SSM_MODE, 0 },
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{ 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
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{ 256, CS42L51_DSM_MODE, 0 }, { 384, CS42L51_DSM_MODE, 0 },
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};
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static struct cs42l51_ratios slave_auto_ratios[] = {
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{ 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
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{ 2048, CS42L51_QSM_MODE, 1 }, { 3072, CS42L51_QSM_MODE, 1 },
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{ 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
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{ 1024, CS42L51_HSM_MODE, 1 }, { 1536, CS42L51_HSM_MODE, 1 },
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{ 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
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{ 512, CS42L51_SSM_MODE, 1 }, { 768, CS42L51_SSM_MODE, 1 },
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{ 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
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{ 256, CS42L51_DSM_MODE, 1 }, { 384, CS42L51_DSM_MODE, 1 },
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};
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static int cs42l51_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 cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
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cs42l51->mclk = freq;
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return 0;
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}
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static int cs42l51_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 cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
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int ret;
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unsigned int i;
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unsigned int rate;
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unsigned int ratio;
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struct cs42l51_ratios *ratios = NULL;
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int nr_ratios = 0;
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int intf_ctl, power_ctl, fmt;
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switch (cs42l51->func) {
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case MODE_MASTER:
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return -EINVAL;
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case MODE_SLAVE:
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ratios = slave_ratios;
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nr_ratios = ARRAY_SIZE(slave_ratios);
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break;
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case MODE_SLAVE_AUTO:
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ratios = slave_auto_ratios;
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nr_ratios = ARRAY_SIZE(slave_auto_ratios);
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break;
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}
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/* Figure out which MCLK/LRCK ratio to use */
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rate = params_rate(params); /* Sampling rate, in Hz */
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ratio = cs42l51->mclk / rate; /* MCLK/LRCK ratio */
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for (i = 0; i < nr_ratios; i++) {
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if (ratios[i].ratio == ratio)
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break;
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}
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if (i == nr_ratios) {
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/* We did not find a matching ratio */
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dev_err(codec->dev, "could not find matching ratio\n");
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return -EINVAL;
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}
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intf_ctl = snd_soc_read(codec, CS42L51_INTF_CTL);
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power_ctl = snd_soc_read(codec, CS42L51_MIC_POWER_CTL);
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intf_ctl &= ~(CS42L51_INTF_CTL_MASTER | CS42L51_INTF_CTL_ADC_I2S
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| CS42L51_INTF_CTL_DAC_FORMAT(7));
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power_ctl &= ~(CS42L51_MIC_POWER_CTL_SPEED(3)
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| CS42L51_MIC_POWER_CTL_MCLK_DIV2);
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switch (cs42l51->func) {
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case MODE_MASTER:
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intf_ctl |= CS42L51_INTF_CTL_MASTER;
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power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
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break;
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case MODE_SLAVE:
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power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
|
|
break;
|
|
case MODE_SLAVE_AUTO:
|
|
power_ctl |= CS42L51_MIC_POWER_CTL_AUTO;
|
|
break;
|
|
}
|
|
|
|
switch (cs42l51->audio_mode) {
|
|
case SND_SOC_DAIFMT_I2S:
|
|
intf_ctl |= CS42L51_INTF_CTL_ADC_I2S;
|
|
intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S);
|
|
break;
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
|
intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_LJ24);
|
|
break;
|
|
case SND_SOC_DAIFMT_RIGHT_J:
|
|
switch (params_format(params)) {
|
|
case SNDRV_PCM_FORMAT_S16_LE:
|
|
case SNDRV_PCM_FORMAT_S16_BE:
|
|
fmt = CS42L51_DAC_DIF_RJ16;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S18_3LE:
|
|
case SNDRV_PCM_FORMAT_S18_3BE:
|
|
fmt = CS42L51_DAC_DIF_RJ18;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S20_3LE:
|
|
case SNDRV_PCM_FORMAT_S20_3BE:
|
|
fmt = CS42L51_DAC_DIF_RJ20;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S24_LE:
|
|
case SNDRV_PCM_FORMAT_S24_BE:
|
|
fmt = CS42L51_DAC_DIF_RJ24;
|
|
break;
|
|
default:
|
|
dev_err(codec->dev, "unknown format\n");
|
|
return -EINVAL;
|
|
}
|
|
intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(fmt);
|
|
break;
|
|
default:
|
|
dev_err(codec->dev, "unknown format\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (ratios[i].mclk)
|
|
power_ctl |= CS42L51_MIC_POWER_CTL_MCLK_DIV2;
|
|
|
|
ret = snd_soc_write(codec, CS42L51_INTF_CTL, intf_ctl);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = snd_soc_write(codec, CS42L51_MIC_POWER_CTL, power_ctl);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cs42l51_dai_mute(struct snd_soc_dai *dai, int mute)
|
|
{
|
|
struct snd_soc_codec *codec = dai->codec;
|
|
int reg;
|
|
int mask = CS42L51_DAC_OUT_CTL_DACA_MUTE|CS42L51_DAC_OUT_CTL_DACB_MUTE;
|
|
|
|
reg = snd_soc_read(codec, CS42L51_DAC_OUT_CTL);
|
|
|
|
if (mute)
|
|
reg |= mask;
|
|
else
|
|
reg &= ~mask;
|
|
|
|
return snd_soc_write(codec, CS42L51_DAC_OUT_CTL, reg);
|
|
}
|
|
|
|
static const struct snd_soc_dai_ops cs42l51_dai_ops = {
|
|
.hw_params = cs42l51_hw_params,
|
|
.set_sysclk = cs42l51_set_dai_sysclk,
|
|
.set_fmt = cs42l51_set_dai_fmt,
|
|
.digital_mute = cs42l51_dai_mute,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver cs42l51_dai = {
|
|
.name = "cs42l51-hifi",
|
|
.playback = {
|
|
.stream_name = "Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = SNDRV_PCM_RATE_8000_96000,
|
|
.formats = CS42L51_FORMATS,
|
|
},
|
|
.capture = {
|
|
.stream_name = "Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = SNDRV_PCM_RATE_8000_96000,
|
|
.formats = CS42L51_FORMATS,
|
|
},
|
|
.ops = &cs42l51_dai_ops,
|
|
};
|
|
|
|
static int cs42l51_probe(struct snd_soc_codec *codec)
|
|
{
|
|
struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
|
|
int ret, reg;
|
|
|
|
ret = cs42l51_fill_cache(codec);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "failed to fill register cache\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_codec_set_cache_io(codec, 8, 8, cs42l51->control_type);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* DAC configuration
|
|
* - Use signal processor
|
|
* - auto mute
|
|
* - vol changes immediate
|
|
* - no de-emphasize
|
|
*/
|
|
reg = CS42L51_DAC_CTL_DATA_SEL(1)
|
|
| CS42L51_DAC_CTL_AMUTE | CS42L51_DAC_CTL_DACSZ(0);
|
|
ret = snd_soc_write(codec, CS42L51_DAC_CTL, reg);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_codec_driver soc_codec_device_cs42l51 = {
|
|
.probe = cs42l51_probe,
|
|
.reg_cache_size = CS42L51_NUMREGS + 1,
|
|
.reg_word_size = sizeof(u8),
|
|
|
|
.controls = cs42l51_snd_controls,
|
|
.num_controls = ARRAY_SIZE(cs42l51_snd_controls),
|
|
.dapm_widgets = cs42l51_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(cs42l51_dapm_widgets),
|
|
.dapm_routes = cs42l51_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(cs42l51_routes),
|
|
};
|
|
|
|
static int cs42l51_i2c_probe(struct i2c_client *i2c_client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct cs42l51_private *cs42l51;
|
|
int ret;
|
|
|
|
/* Verify that we have a CS42L51 */
|
|
ret = i2c_smbus_read_byte_data(i2c_client, CS42L51_CHIP_REV_ID);
|
|
if (ret < 0) {
|
|
dev_err(&i2c_client->dev, "failed to read I2C\n");
|
|
goto error;
|
|
}
|
|
|
|
if ((ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) &&
|
|
(ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) {
|
|
dev_err(&i2c_client->dev, "Invalid chip id\n");
|
|
ret = -ENODEV;
|
|
goto error;
|
|
}
|
|
|
|
dev_info(&i2c_client->dev, "found device cs42l51 rev %d\n",
|
|
ret & 7);
|
|
|
|
cs42l51 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs42l51_private),
|
|
GFP_KERNEL);
|
|
if (!cs42l51) {
|
|
dev_err(&i2c_client->dev, "could not allocate codec\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
i2c_set_clientdata(i2c_client, cs42l51);
|
|
cs42l51->control_type = SND_SOC_I2C;
|
|
|
|
ret = snd_soc_register_codec(&i2c_client->dev,
|
|
&soc_codec_device_cs42l51, &cs42l51_dai, 1);
|
|
error:
|
|
return ret;
|
|
}
|
|
|
|
static int cs42l51_i2c_remove(struct i2c_client *client)
|
|
{
|
|
snd_soc_unregister_codec(&client->dev);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id cs42l51_id[] = {
|
|
{"cs42l51", 0},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, cs42l51_id);
|
|
|
|
static struct i2c_driver cs42l51_i2c_driver = {
|
|
.driver = {
|
|
.name = "cs42l51-codec",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.id_table = cs42l51_id,
|
|
.probe = cs42l51_i2c_probe,
|
|
.remove = cs42l51_i2c_remove,
|
|
};
|
|
|
|
module_i2c_driver(cs42l51_i2c_driver);
|
|
|
|
MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
|
|
MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver");
|
|
MODULE_LICENSE("GPL");
|