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388 lines
10 KiB
388 lines
10 KiB
/* |
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* Driver for the ALLO KATANA CODEC |
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* |
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* Author: Jaikumar <[email protected]> |
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* Copyright 2018 |
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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/clk.h> |
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#include <linux/kernel.h> |
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#include <linux/regmap.h> |
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#include <linux/regulator/consumer.h> |
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#include <linux/gcd.h> |
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#include <sound/soc.h> |
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#include <sound/soc-dapm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/tlv.h> |
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#include <linux/i2c.h> |
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#define KATANA_CODEC_CHIP_ID 0x30 |
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#define KATANA_CODEC_VIRT_BASE 0x100 |
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#define KATANA_CODEC_PAGE 0 |
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#define KATANA_CODEC_CHIP_ID_REG (KATANA_CODEC_VIRT_BASE + 0) |
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#define KATANA_CODEC_RESET (KATANA_CODEC_VIRT_BASE + 1) |
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#define KATANA_CODEC_VOLUME_1 (KATANA_CODEC_VIRT_BASE + 2) |
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#define KATANA_CODEC_VOLUME_2 (KATANA_CODEC_VIRT_BASE + 3) |
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#define KATANA_CODEC_MUTE (KATANA_CODEC_VIRT_BASE + 4) |
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#define KATANA_CODEC_DSP_PROGRAM (KATANA_CODEC_VIRT_BASE + 5) |
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#define KATANA_CODEC_DEEMPHASIS (KATANA_CODEC_VIRT_BASE + 6) |
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#define KATANA_CODEC_DOP (KATANA_CODEC_VIRT_BASE + 7) |
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#define KATANA_CODEC_FORMAT (KATANA_CODEC_VIRT_BASE + 8) |
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#define KATANA_CODEC_COMMAND (KATANA_CODEC_VIRT_BASE + 9) |
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#define KATANA_CODEC_MUTE_STREAM (KATANA_CODEC_VIRT_BASE + 10) |
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#define KATANA_CODEC_MAX_REGISTER (KATANA_CODEC_VIRT_BASE + 10) |
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#define KATANA_CODEC_FMT 0xff |
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#define KATANA_CODEC_CHAN_MONO 0x00 |
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#define KATANA_CODEC_CHAN_STEREO 0x80 |
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#define KATANA_CODEC_ALEN_16 0x10 |
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#define KATANA_CODEC_ALEN_24 0x20 |
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#define KATANA_CODEC_ALEN_32 0x30 |
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#define KATANA_CODEC_RATE_11025 0x01 |
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#define KATANA_CODEC_RATE_22050 0x02 |
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#define KATANA_CODEC_RATE_32000 0x03 |
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#define KATANA_CODEC_RATE_44100 0x04 |
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#define KATANA_CODEC_RATE_48000 0x05 |
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#define KATANA_CODEC_RATE_88200 0x06 |
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#define KATANA_CODEC_RATE_96000 0x07 |
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#define KATANA_CODEC_RATE_176400 0x08 |
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#define KATANA_CODEC_RATE_192000 0x09 |
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#define KATANA_CODEC_RATE_352800 0x0a |
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#define KATANA_CODEC_RATE_384000 0x0b |
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struct katana_codec_priv { |
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struct regmap *regmap; |
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int fmt; |
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}; |
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static const struct reg_default katana_codec_reg_defaults[] = { |
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{ KATANA_CODEC_RESET, 0x00 }, |
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{ KATANA_CODEC_VOLUME_1, 0xF0 }, |
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{ KATANA_CODEC_VOLUME_2, 0xF0 }, |
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{ KATANA_CODEC_MUTE, 0x00 }, |
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{ KATANA_CODEC_DSP_PROGRAM, 0x04 }, |
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{ KATANA_CODEC_DEEMPHASIS, 0x00 }, |
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{ KATANA_CODEC_DOP, 0x00 }, |
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{ KATANA_CODEC_FORMAT, 0xb4 }, |
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}; |
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static const char * const katana_codec_dsp_program_texts[] = { |
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"Linear Phase Fast Roll-off Filter", |
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"Linear Phase Slow Roll-off Filter", |
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"Minimum Phase Fast Roll-off Filter", |
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"Minimum Phase Slow Roll-off Filter", |
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"Apodizing Fast Roll-off Filter", |
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"Corrected Minimum Phase Fast Roll-off Filter", |
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"Brick Wall Filter", |
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}; |
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static const unsigned int katana_codec_dsp_program_values[] = { |
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0, |
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1, |
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2, |
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3, |
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4, |
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6, |
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7, |
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}; |
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static SOC_VALUE_ENUM_SINGLE_DECL(katana_codec_dsp_program, |
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KATANA_CODEC_DSP_PROGRAM, 0, 0x07, |
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katana_codec_dsp_program_texts, |
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katana_codec_dsp_program_values); |
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static const char * const katana_codec_deemphasis_texts[] = { |
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"Bypass", |
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"32kHz", |
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"44.1kHz", |
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"48kHz", |
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}; |
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static const unsigned int katana_codec_deemphasis_values[] = { |
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0, |
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1, |
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2, |
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3, |
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}; |
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static SOC_VALUE_ENUM_SINGLE_DECL(katana_codec_deemphasis, |
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KATANA_CODEC_DEEMPHASIS, 0, 0x03, |
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katana_codec_deemphasis_texts, |
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katana_codec_deemphasis_values); |
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static const SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(master_tlv, -12750, 0); |
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static const struct snd_kcontrol_new katana_codec_controls[] = { |
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SOC_DOUBLE_R_TLV("Master Playback Volume", KATANA_CODEC_VOLUME_1, |
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KATANA_CODEC_VOLUME_2, 0, 255, 1, master_tlv), |
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SOC_DOUBLE("Master Playback Switch", KATANA_CODEC_MUTE, 0, 0, 1, 1), |
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SOC_ENUM("DSP Program Route", katana_codec_dsp_program), |
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SOC_ENUM("Deemphasis Route", katana_codec_deemphasis), |
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SOC_SINGLE("DoP Playback Switch", KATANA_CODEC_DOP, 0, 1, 1) |
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}; |
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static bool katana_codec_readable_register(struct device *dev, |
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unsigned int reg) |
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{ |
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switch (reg) { |
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case KATANA_CODEC_CHIP_ID_REG: |
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return true; |
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default: |
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return reg < 0xff; |
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} |
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} |
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static int katana_codec_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_component *component = dai->component; |
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struct katana_codec_priv *katana_codec = |
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snd_soc_component_get_drvdata(component); |
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int fmt = 0; |
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int ret; |
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dev_dbg(component->card->dev, "hw_params %u Hz, %u channels, %u bits\n", |
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params_rate(params), |
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params_channels(params), |
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params_width(params)); |
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switch (katana_codec->fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
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case SND_SOC_DAIFMT_CBM_CFM: // master |
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if (params_channels(params) == 2) |
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fmt = KATANA_CODEC_CHAN_STEREO; |
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else |
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fmt = KATANA_CODEC_CHAN_MONO; |
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switch (params_width(params)) { |
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case 16: |
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fmt |= KATANA_CODEC_ALEN_16; |
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break; |
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case 24: |
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fmt |= KATANA_CODEC_ALEN_24; |
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break; |
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case 32: |
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fmt |= KATANA_CODEC_ALEN_32; |
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break; |
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default: |
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dev_err(component->card->dev, "Bad frame size: %d\n", |
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params_width(params)); |
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return -EINVAL; |
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} |
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switch (params_rate(params)) { |
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case 44100: |
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fmt |= KATANA_CODEC_RATE_44100; |
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break; |
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case 48000: |
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fmt |= KATANA_CODEC_RATE_48000; |
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break; |
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case 88200: |
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fmt |= KATANA_CODEC_RATE_88200; |
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break; |
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case 96000: |
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fmt |= KATANA_CODEC_RATE_96000; |
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break; |
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case 176400: |
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fmt |= KATANA_CODEC_RATE_176400; |
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break; |
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case 192000: |
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fmt |= KATANA_CODEC_RATE_192000; |
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break; |
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case 352800: |
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fmt |= KATANA_CODEC_RATE_352800; |
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break; |
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case 384000: |
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fmt |= KATANA_CODEC_RATE_384000; |
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break; |
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default: |
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dev_err(component->card->dev, "Bad sample rate: %d\n", |
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params_rate(params)); |
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return -EINVAL; |
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} |
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ret = regmap_write(katana_codec->regmap, KATANA_CODEC_FORMAT, |
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fmt); |
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if (ret != 0) { |
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dev_err(component->card->dev, "Failed to set format: %d\n", ret); |
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return ret; |
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} |
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break; |
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case SND_SOC_DAIFMT_CBS_CFS: |
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break; |
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default: |
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return -EINVAL; |
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} |
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return 0; |
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} |
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static int katana_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 katana_codec_priv *katana_codec = |
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snd_soc_component_get_drvdata(component); |
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katana_codec->fmt = fmt; |
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return 0; |
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} |
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int katana_codec_dai_mute_stream(struct snd_soc_dai *dai, int mute, |
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int stream) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct katana_codec_priv *katana_codec = |
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snd_soc_component_get_drvdata(component); |
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int ret = 0; |
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ret = regmap_write(katana_codec->regmap, KATANA_CODEC_MUTE_STREAM, |
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mute); |
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if (ret != 0) { |
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dev_err(component->card->dev, "Failed to set mute: %d\n", ret); |
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return ret; |
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} |
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return ret; |
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} |
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static const struct snd_soc_dai_ops katana_codec_dai_ops = { |
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.mute_stream = katana_codec_dai_mute_stream, |
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.hw_params = katana_codec_hw_params, |
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.set_fmt = katana_codec_set_fmt, |
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}; |
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static struct snd_soc_dai_driver katana_codec_dai = { |
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.name = "allo-katana-codec", |
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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 = 44100, |
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.rate_max = 384000, |
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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 = &katana_codec_dai_ops, |
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}; |
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static struct snd_soc_component_driver katana_codec_component_driver = { |
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.idle_bias_on = true, |
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.controls = katana_codec_controls, |
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.num_controls = ARRAY_SIZE(katana_codec_controls), |
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}; |
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static const struct regmap_range_cfg katana_codec_range = { |
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.name = "Pages", .range_min = KATANA_CODEC_VIRT_BASE, |
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.range_max = KATANA_CODEC_MAX_REGISTER, |
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.selector_reg = KATANA_CODEC_PAGE, |
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.selector_mask = 0xff, |
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.window_start = 0, .window_len = 0x100, |
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}; |
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const struct regmap_config katana_codec_regmap = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.ranges = &katana_codec_range, |
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.num_ranges = 1, |
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.max_register = KATANA_CODEC_MAX_REGISTER, |
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.readable_reg = katana_codec_readable_register, |
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.reg_defaults = katana_codec_reg_defaults, |
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.num_reg_defaults = ARRAY_SIZE(katana_codec_reg_defaults), |
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.cache_type = REGCACHE_RBTREE, |
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}; |
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static int allo_katana_component_probe(struct i2c_client *i2c, |
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const struct i2c_device_id *id) |
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{ |
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struct regmap *regmap; |
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struct regmap_config config = katana_codec_regmap; |
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struct device *dev = &i2c->dev; |
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struct katana_codec_priv *katana_codec; |
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unsigned int chip_id = 0; |
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int ret; |
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regmap = devm_regmap_init_i2c(i2c, &config); |
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if (IS_ERR(regmap)) |
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return PTR_ERR(regmap); |
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katana_codec = devm_kzalloc(dev, sizeof(struct katana_codec_priv), |
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GFP_KERNEL); |
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if (!katana_codec) |
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return -ENOMEM; |
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dev_set_drvdata(dev, katana_codec); |
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katana_codec->regmap = regmap; |
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ret = regmap_read(regmap, KATANA_CODEC_CHIP_ID_REG, &chip_id); |
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if ((ret != 0) || (chip_id != KATANA_CODEC_CHIP_ID)) { |
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dev_err(dev, "Failed to read Chip or wrong Chip id: %d\n", ret); |
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return ret; |
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} |
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regmap_update_bits(regmap, KATANA_CODEC_RESET, 0x01, 0x01); |
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msleep(10); |
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ret = snd_soc_register_component(dev, &katana_codec_component_driver, |
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&katana_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 int allo_katana_component_remove(struct i2c_client *i2c) |
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{ |
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snd_soc_unregister_component(&i2c->dev); |
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return 0; |
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} |
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static const struct i2c_device_id allo_katana_component_id[] = { |
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{ "allo-katana-codec", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, allo_katana_component_id); |
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static const struct of_device_id allo_katana_codec_of_match[] = { |
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{ .compatible = "allo,allo-katana-codec", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, allo_katana_codec_of_match); |
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static struct i2c_driver allo_katana_component_driver = { |
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.probe = allo_katana_component_probe, |
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.remove = allo_katana_component_remove, |
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.id_table = allo_katana_component_id, |
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.driver = { |
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.name = "allo-katana-codec", |
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.of_match_table = allo_katana_codec_of_match, |
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}, |
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}; |
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module_i2c_driver(allo_katana_component_driver); |
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MODULE_DESCRIPTION("ASoC Allo Katana Codec Driver"); |
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MODULE_AUTHOR("Jaikumar <[email protected]>"); |
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MODULE_LICENSE("GPL v2");
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