85e7652d89
Commit 1ee46ebd("ASoC: Make the DAI ops constant in the DAI structure")
introduced the possibility to have constant DAI ops structures, yet this is
barley used in both existing drivers and also new drivers being submitted,
although none of them modifies its DAI ops structure. The later is not
surprising since existing drivers are often used as templates for new drivers.
So this patch just constifies all existing snd_soc_dai_ops structs to eliminate
the issue altogether.
The patch was generated with the following coccinelle semantic patch:
// <smpl>
@@
identifier ops;
@@
-struct snd_soc_dai_ops ops =
+const struct snd_soc_dai_ops ops =
{ ... };
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
645 lines
18 KiB
C
645 lines
18 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/platform_device.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/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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7, 0xffffff99, 0x18, 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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8, 0xffffff19, 0x18, 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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7, 0xffffff99, 0x18, 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_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_codec *codec = rtd->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);
|
|
|
|
intf_ctl &= ~(CS42L51_INTF_CTL_MASTER | CS42L51_INTF_CTL_ADC_I2S
|
|
| CS42L51_INTF_CTL_DAC_FORMAT(7));
|
|
power_ctl &= ~(CS42L51_MIC_POWER_CTL_SPEED(3)
|
|
| CS42L51_MIC_POWER_CTL_MCLK_DIV2);
|
|
|
|
switch (cs42l51->func) {
|
|
case MODE_MASTER:
|
|
intf_ctl |= CS42L51_INTF_CTL_MASTER;
|
|
power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
|
|
break;
|
|
case MODE_SLAVE:
|
|
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);
|
|
struct snd_soc_dapm_context *dapm = &codec->dapm;
|
|
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;
|
|
|
|
snd_soc_add_controls(codec, cs42l51_snd_controls,
|
|
ARRAY_SIZE(cs42l51_snd_controls));
|
|
snd_soc_dapm_new_controls(dapm, cs42l51_dapm_widgets,
|
|
ARRAY_SIZE(cs42l51_dapm_widgets));
|
|
snd_soc_dapm_add_routes(dapm, cs42l51_routes,
|
|
ARRAY_SIZE(cs42l51_routes));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_codec_driver soc_codec_device_cs42l51 = {
|
|
.probe = cs42l51_probe,
|
|
.reg_cache_size = CS42L51_NUMREGS,
|
|
.reg_word_size = sizeof(u8),
|
|
};
|
|
|
|
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 = kzalloc(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);
|
|
if (ret < 0)
|
|
kfree(cs42l51);
|
|
error:
|
|
return ret;
|
|
}
|
|
|
|
static int cs42l51_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct cs42l51_private *cs42l51 = i2c_get_clientdata(client);
|
|
|
|
snd_soc_unregister_codec(&client->dev);
|
|
kfree(cs42l51);
|
|
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,
|
|
};
|
|
|
|
static int __init cs42l51_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = i2c_add_driver(&cs42l51_i2c_driver);
|
|
if (ret != 0) {
|
|
printk(KERN_ERR "%s: can't add i2c driver\n", __func__);
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
module_init(cs42l51_init);
|
|
|
|
static void __exit cs42l51_exit(void)
|
|
{
|
|
i2c_del_driver(&cs42l51_i2c_driver);
|
|
}
|
|
module_exit(cs42l51_exit);
|
|
|
|
MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
|
|
MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver");
|
|
MODULE_LICENSE("GPL");
|