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392 lines
9.3 KiB
392 lines
9.3 KiB
/* |
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* Driver for I-Sabre Q2M |
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* |
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* Author: Satoru Kawase |
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* Modified by: Xiao Qingyong |
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* Modified by: JC BARBAUD (Mute) |
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* Update kernel v4.18+ by : Audiophonics |
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* Copyright 2018 Audiophonics |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* version 2 as 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, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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*/ |
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#include <linux/init.h> |
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#include <linux/module.h> |
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#include <linux/regmap.h> |
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#include <linux/i2c.h> |
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#include <sound/soc.h> |
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#include <sound/pcm_params.h> |
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#include <sound/tlv.h> |
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#include "i-sabre-codec.h" |
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/* I-Sabre Q2M Codec Private Data */ |
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struct i_sabre_codec_priv { |
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struct regmap *regmap; |
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unsigned int fmt; |
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}; |
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/* I-Sabre Q2M Codec Default Register Value */ |
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static const struct reg_default i_sabre_codec_reg_defaults[] = { |
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{ ISABRECODEC_REG_10, 0x00 }, |
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{ ISABRECODEC_REG_20, 0x00 }, |
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{ ISABRECODEC_REG_21, 0x00 }, |
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{ ISABRECODEC_REG_22, 0x00 }, |
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{ ISABRECODEC_REG_24, 0x00 }, |
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}; |
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static bool i_sabre_codec_writeable(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case ISABRECODEC_REG_10: |
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case ISABRECODEC_REG_20: |
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case ISABRECODEC_REG_21: |
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case ISABRECODEC_REG_22: |
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case ISABRECODEC_REG_24: |
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return true; |
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default: |
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return false; |
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} |
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} |
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static bool i_sabre_codec_readable(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case ISABRECODEC_REG_01: |
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case ISABRECODEC_REG_02: |
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case ISABRECODEC_REG_10: |
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case ISABRECODEC_REG_20: |
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case ISABRECODEC_REG_21: |
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case ISABRECODEC_REG_22: |
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case ISABRECODEC_REG_24: |
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return true; |
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default: |
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return false; |
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} |
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} |
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static bool i_sabre_codec_volatile(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case ISABRECODEC_REG_01: |
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case ISABRECODEC_REG_02: |
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return true; |
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default: |
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return false; |
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} |
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} |
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/* Volume Scale */ |
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static const DECLARE_TLV_DB_SCALE(volume_tlv, -10000, 100, 0); |
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/* Filter Type */ |
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static const char * const fir_filter_type_texts[] = { |
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"brick wall", |
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"corrected minimum phase fast", |
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"minimum phase slow", |
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"minimum phase fast", |
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"linear phase slow", |
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"linear phase fast", |
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"apodizing fast", |
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}; |
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static SOC_ENUM_SINGLE_DECL(i_sabre_fir_filter_type_enum, |
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ISABRECODEC_REG_22, 0, fir_filter_type_texts); |
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/* I2S / SPDIF Select */ |
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static const char * const iis_spdif_sel_texts[] = { |
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"I2S", |
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"SPDIF", |
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}; |
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static SOC_ENUM_SINGLE_DECL(i_sabre_iis_spdif_sel_enum, |
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ISABRECODEC_REG_24, 0, iis_spdif_sel_texts); |
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/* Control */ |
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static const struct snd_kcontrol_new i_sabre_codec_controls[] = { |
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SOC_SINGLE_RANGE_TLV("Digital Playback Volume", ISABRECODEC_REG_20, 0, 0, 100, 1, volume_tlv), |
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SOC_SINGLE("Digital Playback Switch", ISABRECODEC_REG_21, 0, 1, 1), |
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SOC_ENUM("FIR Filter Type", i_sabre_fir_filter_type_enum), |
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SOC_ENUM("I2S/SPDIF Select", i_sabre_iis_spdif_sel_enum), |
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}; |
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static const u32 i_sabre_codec_dai_rates_slave[] = { |
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8000, 11025, 16000, 22050, 32000, |
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44100, 48000, 64000, 88200, 96000, |
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176400, 192000, 352800, 384000, |
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705600, 768000, 1411200, 1536000 |
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}; |
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static const struct snd_pcm_hw_constraint_list constraints_slave = { |
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.list = i_sabre_codec_dai_rates_slave, |
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.count = ARRAY_SIZE(i_sabre_codec_dai_rates_slave), |
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}; |
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static int i_sabre_codec_dai_startup_slave( |
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struct snd_pcm_substream *substream, struct snd_soc_dai *dai) |
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{ |
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struct snd_soc_component *component = dai->component; |
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int ret; |
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ret = snd_pcm_hw_constraint_list(substream->runtime, |
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0, SNDRV_PCM_HW_PARAM_RATE, &constraints_slave); |
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if (ret != 0) { |
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dev_err(component->card->dev, "Failed to setup rates constraints: %d\n", ret); |
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} |
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return ret; |
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} |
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static int i_sabre_codec_dai_startup( |
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struct snd_pcm_substream *substream, struct snd_soc_dai *dai) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct i_sabre_codec_priv *i_sabre_codec |
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= snd_soc_component_get_drvdata(component); |
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switch (i_sabre_codec->fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
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case SND_SOC_DAIFMT_CBS_CFS: |
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return i_sabre_codec_dai_startup_slave(substream, dai); |
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default: |
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return (-EINVAL); |
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} |
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} |
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static int i_sabre_codec_hw_params( |
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struct snd_pcm_substream *substream, 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_component *component = dai->component; |
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struct i_sabre_codec_priv *i_sabre_codec |
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= snd_soc_component_get_drvdata(component); |
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unsigned int daifmt; |
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int format_width; |
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dev_dbg(component->card->dev, "hw_params %u Hz, %u channels\n", |
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params_rate(params), params_channels(params)); |
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/* Check I2S Format (Bit Size) */ |
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format_width = snd_pcm_format_width(params_format(params)); |
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if ((format_width != 32) && (format_width != 16)) { |
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dev_err(component->card->dev, "Bad frame size: %d\n", |
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snd_pcm_format_width(params_format(params))); |
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return (-EINVAL); |
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} |
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/* Check Slave Mode */ |
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daifmt = i_sabre_codec->fmt & SND_SOC_DAIFMT_MASTER_MASK; |
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if (daifmt != SND_SOC_DAIFMT_CBS_CFS) { |
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return (-EINVAL); |
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} |
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/* Notify Sampling Frequency */ |
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switch (params_rate(params)) |
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{ |
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case 44100: |
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case 48000: |
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case 88200: |
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case 96000: |
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case 176400: |
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case 192000: |
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snd_soc_component_update_bits(component, ISABRECODEC_REG_10, 0x01, 0x00); |
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break; |
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case 352800: |
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case 384000: |
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case 705600: |
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case 768000: |
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case 1411200: |
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case 1536000: |
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snd_soc_component_update_bits(component, ISABRECODEC_REG_10, 0x01, 0x01); |
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break; |
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} |
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return 0; |
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} |
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static int i_sabre_codec_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct i_sabre_codec_priv *i_sabre_codec |
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= snd_soc_component_get_drvdata(component); |
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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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break; |
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case SND_SOC_DAIFMT_RIGHT_J: |
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case SND_SOC_DAIFMT_LEFT_J: |
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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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if ((fmt & SND_SOC_DAIFMT_INV_MASK) != SND_SOC_DAIFMT_NB_NF) { |
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return (-EINVAL); |
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} |
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/* Set Audio Data Format */ |
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i_sabre_codec->fmt = fmt; |
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return 0; |
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} |
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static int i_sabre_codec_dac_mute(struct snd_soc_dai *dai, int mute, int direction) |
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{ |
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struct snd_soc_component *component = dai->component; |
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if (mute) { |
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snd_soc_component_update_bits(component, ISABRECODEC_REG_21, 0x01, 0x01); |
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} else { |
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snd_soc_component_update_bits(component, ISABRECODEC_REG_21, 0x01, 0x00); |
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} |
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return 0; |
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} |
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static const struct snd_soc_dai_ops i_sabre_codec_dai_ops = { |
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.startup = i_sabre_codec_dai_startup, |
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.hw_params = i_sabre_codec_hw_params, |
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.set_fmt = i_sabre_codec_set_fmt, |
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.mute_stream = i_sabre_codec_dac_mute, |
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}; |
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static struct snd_soc_dai_driver i_sabre_codec_dai = { |
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.name = "i-sabre-codec-dai", |
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.playback = { |
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.stream_name = "Playback", |
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.channels_min = 2, |
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.channels_max = 2, |
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.rates = SNDRV_PCM_RATE_CONTINUOUS, |
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.rate_min = 8000, |
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.rate_max = 1536000, |
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.formats = SNDRV_PCM_FMTBIT_S16_LE |
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| SNDRV_PCM_FMTBIT_S32_LE, |
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}, |
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.ops = &i_sabre_codec_dai_ops, |
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}; |
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static struct snd_soc_component_driver i_sabre_codec_codec_driver = { |
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.controls = i_sabre_codec_controls, |
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.num_controls = ARRAY_SIZE(i_sabre_codec_controls), |
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}; |
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static const struct regmap_config i_sabre_codec_regmap = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = ISABRECODEC_MAX_REG, |
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.reg_defaults = i_sabre_codec_reg_defaults, |
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.num_reg_defaults = ARRAY_SIZE(i_sabre_codec_reg_defaults), |
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.writeable_reg = i_sabre_codec_writeable, |
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.readable_reg = i_sabre_codec_readable, |
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.volatile_reg = i_sabre_codec_volatile, |
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.cache_type = REGCACHE_RBTREE, |
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}; |
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static int i_sabre_codec_probe(struct device *dev, struct regmap *regmap) |
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{ |
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struct i_sabre_codec_priv *i_sabre_codec; |
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int ret; |
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i_sabre_codec = devm_kzalloc(dev, sizeof(*i_sabre_codec), GFP_KERNEL); |
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if (!i_sabre_codec) { |
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dev_err(dev, "devm_kzalloc"); |
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return (-ENOMEM); |
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} |
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i_sabre_codec->regmap = regmap; |
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dev_set_drvdata(dev, i_sabre_codec); |
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ret = snd_soc_register_component(dev, |
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&i_sabre_codec_codec_driver, &i_sabre_codec_dai, 1); |
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if (ret != 0) { |
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dev_err(dev, "Failed to register CODEC: %d\n", ret); |
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return ret; |
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} |
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return 0; |
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} |
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static void i_sabre_codec_remove(struct device *dev) |
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{ |
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snd_soc_unregister_component(dev); |
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} |
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static int i_sabre_codec_i2c_probe( |
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struct i2c_client *i2c, const struct i2c_device_id *id) |
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{ |
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struct regmap *regmap; |
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regmap = devm_regmap_init_i2c(i2c, &i_sabre_codec_regmap); |
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if (IS_ERR(regmap)) { |
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return PTR_ERR(regmap); |
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} |
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return i_sabre_codec_probe(&i2c->dev, regmap); |
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} |
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static int i_sabre_codec_i2c_remove(struct i2c_client *i2c) |
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{ |
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i_sabre_codec_remove(&i2c->dev); |
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return 0; |
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} |
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static const struct i2c_device_id i_sabre_codec_i2c_id[] = { |
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{ "i-sabre-codec", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, i_sabre_codec_i2c_id); |
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static const struct of_device_id i_sabre_codec_of_match[] = { |
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{ .compatible = "audiophonics,i-sabre-codec", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, i_sabre_codec_of_match); |
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static struct i2c_driver i_sabre_codec_i2c_driver = { |
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.driver = { |
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.name = "i-sabre-codec-i2c", |
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.owner = THIS_MODULE, |
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.of_match_table = of_match_ptr(i_sabre_codec_of_match), |
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}, |
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.probe = i_sabre_codec_i2c_probe, |
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.remove = i_sabre_codec_i2c_remove, |
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.id_table = i_sabre_codec_i2c_id, |
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}; |
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module_i2c_driver(i_sabre_codec_i2c_driver); |
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MODULE_DESCRIPTION("ASoC I-Sabre Q2M codec driver"); |
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MODULE_AUTHOR("Audiophonics <http://www.audiophonics.fr>"); |
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MODULE_LICENSE("GPL");
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