536 lines
13 KiB
C
536 lines
13 KiB
C
/*
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* Driver for ADAU1701 SigmaDSP processor
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*
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* Copyright 2011 Analog Devices Inc.
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* Author: Lars-Peter Clausen <lars@metafoo.de>
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* based on an inital version by Cliff Cai <cliff.cai@analog.com>
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*
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* Licensed under the GPL-2 or later.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include "sigmadsp.h"
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#include "adau1701.h"
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#define ADAU1701_DSPCTRL 0x1c
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#define ADAU1701_SEROCTL 0x1e
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#define ADAU1701_SERICTL 0x1f
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#define ADAU1701_AUXNPOW 0x22
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#define ADAU1701_OSCIPOW 0x26
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#define ADAU1701_DACSET 0x27
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#define ADAU1701_NUM_REGS 0x28
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#define ADAU1701_DSPCTRL_CR (1 << 2)
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#define ADAU1701_DSPCTRL_DAM (1 << 3)
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#define ADAU1701_DSPCTRL_ADM (1 << 4)
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#define ADAU1701_DSPCTRL_SR_48 0x00
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#define ADAU1701_DSPCTRL_SR_96 0x01
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#define ADAU1701_DSPCTRL_SR_192 0x02
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#define ADAU1701_DSPCTRL_SR_MASK 0x03
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#define ADAU1701_SEROCTL_INV_LRCLK 0x2000
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#define ADAU1701_SEROCTL_INV_BCLK 0x1000
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#define ADAU1701_SEROCTL_MASTER 0x0800
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#define ADAU1701_SEROCTL_OBF16 0x0000
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#define ADAU1701_SEROCTL_OBF8 0x0200
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#define ADAU1701_SEROCTL_OBF4 0x0400
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#define ADAU1701_SEROCTL_OBF2 0x0600
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#define ADAU1701_SEROCTL_OBF_MASK 0x0600
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#define ADAU1701_SEROCTL_OLF1024 0x0000
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#define ADAU1701_SEROCTL_OLF512 0x0080
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#define ADAU1701_SEROCTL_OLF256 0x0100
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#define ADAU1701_SEROCTL_OLF_MASK 0x0180
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#define ADAU1701_SEROCTL_MSB_DEALY1 0x0000
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#define ADAU1701_SEROCTL_MSB_DEALY0 0x0004
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#define ADAU1701_SEROCTL_MSB_DEALY8 0x0008
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#define ADAU1701_SEROCTL_MSB_DEALY12 0x000c
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#define ADAU1701_SEROCTL_MSB_DEALY16 0x0010
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#define ADAU1701_SEROCTL_MSB_DEALY_MASK 0x001c
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#define ADAU1701_SEROCTL_WORD_LEN_24 0x0000
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#define ADAU1701_SEROCTL_WORD_LEN_20 0x0001
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#define ADAU1701_SEROCTL_WORD_LEN_16 0x0010
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#define ADAU1701_SEROCTL_WORD_LEN_MASK 0x0003
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#define ADAU1701_AUXNPOW_VBPD 0x40
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#define ADAU1701_AUXNPOW_VRPD 0x20
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#define ADAU1701_SERICTL_I2S 0
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#define ADAU1701_SERICTL_LEFTJ 1
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#define ADAU1701_SERICTL_TDM 2
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#define ADAU1701_SERICTL_RIGHTJ_24 3
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#define ADAU1701_SERICTL_RIGHTJ_20 4
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#define ADAU1701_SERICTL_RIGHTJ_18 5
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#define ADAU1701_SERICTL_RIGHTJ_16 6
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#define ADAU1701_SERICTL_MODE_MASK 7
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#define ADAU1701_SERICTL_INV_BCLK BIT(3)
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#define ADAU1701_SERICTL_INV_LRCLK BIT(4)
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#define ADAU1701_OSCIPOW_OPD 0x04
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#define ADAU1701_DACSET_DACINIT 1
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#define ADAU1701_FIRMWARE "adau1701.bin"
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struct adau1701 {
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unsigned int dai_fmt;
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};
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static const struct snd_kcontrol_new adau1701_controls[] = {
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SOC_SINGLE("Master Capture Switch", ADAU1701_DSPCTRL, 4, 1, 0),
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};
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static const struct snd_soc_dapm_widget adau1701_dapm_widgets[] = {
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SND_SOC_DAPM_DAC("DAC0", "Playback", ADAU1701_AUXNPOW, 3, 1),
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SND_SOC_DAPM_DAC("DAC1", "Playback", ADAU1701_AUXNPOW, 2, 1),
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SND_SOC_DAPM_DAC("DAC2", "Playback", ADAU1701_AUXNPOW, 1, 1),
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SND_SOC_DAPM_DAC("DAC3", "Playback", ADAU1701_AUXNPOW, 0, 1),
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SND_SOC_DAPM_ADC("ADC", "Capture", ADAU1701_AUXNPOW, 7, 1),
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SND_SOC_DAPM_OUTPUT("OUT0"),
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SND_SOC_DAPM_OUTPUT("OUT1"),
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SND_SOC_DAPM_OUTPUT("OUT2"),
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SND_SOC_DAPM_OUTPUT("OUT3"),
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SND_SOC_DAPM_INPUT("IN0"),
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SND_SOC_DAPM_INPUT("IN1"),
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};
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static const struct snd_soc_dapm_route adau1701_dapm_routes[] = {
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{ "OUT0", NULL, "DAC0" },
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{ "OUT1", NULL, "DAC1" },
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{ "OUT2", NULL, "DAC2" },
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{ "OUT3", NULL, "DAC3" },
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{ "ADC", NULL, "IN0" },
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{ "ADC", NULL, "IN1" },
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};
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static unsigned int adau1701_register_size(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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switch (reg) {
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case ADAU1701_DSPCTRL:
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case ADAU1701_SEROCTL:
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case ADAU1701_AUXNPOW:
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case ADAU1701_OSCIPOW:
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case ADAU1701_DACSET:
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return 2;
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case ADAU1701_SERICTL:
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return 1;
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}
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dev_err(codec->dev, "Unsupported register address: %d\n", reg);
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return 0;
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}
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static int adau1701_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int value)
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{
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unsigned int i;
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unsigned int size;
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uint8_t buf[4];
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int ret;
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size = adau1701_register_size(codec, reg);
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if (size == 0)
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return -EINVAL;
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snd_soc_cache_write(codec, reg, value);
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buf[0] = 0x08;
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buf[1] = reg;
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for (i = size + 1; i >= 2; --i) {
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buf[i] = value;
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value >>= 8;
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}
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ret = i2c_master_send(to_i2c_client(codec->dev), buf, size + 2);
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if (ret == size + 2)
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return 0;
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else if (ret < 0)
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return ret;
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else
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return -EIO;
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}
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static unsigned int adau1701_read(struct snd_soc_codec *codec, unsigned int reg)
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{
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unsigned int value;
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unsigned int ret;
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ret = snd_soc_cache_read(codec, reg, &value);
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if (ret)
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return ret;
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return value;
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}
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static int adau1701_load_firmware(struct snd_soc_codec *codec)
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{
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return process_sigma_firmware(codec->control_data, ADAU1701_FIRMWARE);
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}
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static int adau1701_set_capture_pcm_format(struct snd_soc_codec *codec,
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snd_pcm_format_t format)
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{
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struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
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unsigned int mask = ADAU1701_SEROCTL_WORD_LEN_MASK;
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unsigned int val;
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switch (format) {
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case SNDRV_PCM_FORMAT_S16_LE:
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val = ADAU1701_SEROCTL_WORD_LEN_16;
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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val = ADAU1701_SEROCTL_WORD_LEN_20;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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val = ADAU1701_SEROCTL_WORD_LEN_24;
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break;
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default:
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return -EINVAL;
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}
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if (adau1701->dai_fmt == SND_SOC_DAIFMT_RIGHT_J) {
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switch (format) {
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case SNDRV_PCM_FORMAT_S16_LE:
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val |= ADAU1701_SEROCTL_MSB_DEALY16;
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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val |= ADAU1701_SEROCTL_MSB_DEALY12;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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val |= ADAU1701_SEROCTL_MSB_DEALY8;
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break;
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}
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mask |= ADAU1701_SEROCTL_MSB_DEALY_MASK;
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}
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snd_soc_update_bits(codec, ADAU1701_SEROCTL, mask, val);
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return 0;
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}
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static int adau1701_set_playback_pcm_format(struct snd_soc_codec *codec,
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snd_pcm_format_t format)
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{
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struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
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unsigned int val;
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if (adau1701->dai_fmt != SND_SOC_DAIFMT_RIGHT_J)
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return 0;
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switch (format) {
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case SNDRV_PCM_FORMAT_S16_LE:
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val = ADAU1701_SERICTL_RIGHTJ_16;
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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val = ADAU1701_SERICTL_RIGHTJ_20;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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val = ADAU1701_SERICTL_RIGHTJ_24;
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break;
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default:
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return -EINVAL;
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}
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snd_soc_update_bits(codec, ADAU1701_SERICTL,
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ADAU1701_SERICTL_MODE_MASK, val);
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return 0;
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}
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static int adau1701_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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snd_pcm_format_t format;
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unsigned int val;
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switch (params_rate(params)) {
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case 192000:
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val = ADAU1701_DSPCTRL_SR_192;
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break;
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case 96000:
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val = ADAU1701_DSPCTRL_SR_96;
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break;
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case 48000:
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val = ADAU1701_DSPCTRL_SR_48;
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break;
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default:
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return -EINVAL;
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}
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snd_soc_update_bits(codec, ADAU1701_DSPCTRL,
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ADAU1701_DSPCTRL_SR_MASK, val);
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format = params_format(params);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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return adau1701_set_playback_pcm_format(codec, format);
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else
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return adau1701_set_capture_pcm_format(codec, format);
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}
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static int adau1701_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int fmt)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
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unsigned int serictl = 0x00, seroctl = 0x00;
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bool invert_lrclk;
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBM_CFM:
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/* master, 64-bits per sample, 1 frame per sample */
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seroctl |= ADAU1701_SEROCTL_MASTER | ADAU1701_SEROCTL_OBF16
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| ADAU1701_SEROCTL_OLF1024;
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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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/* clock inversion */
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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invert_lrclk = false;
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break;
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case SND_SOC_DAIFMT_NB_IF:
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invert_lrclk = true;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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invert_lrclk = false;
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serictl |= ADAU1701_SERICTL_INV_BCLK;
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seroctl |= ADAU1701_SEROCTL_INV_BCLK;
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break;
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case SND_SOC_DAIFMT_IB_IF:
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invert_lrclk = true;
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serictl |= ADAU1701_SERICTL_INV_BCLK;
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seroctl |= ADAU1701_SEROCTL_INV_BCLK;
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break;
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default:
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return -EINVAL;
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}
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switch (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_LEFT_J:
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serictl |= ADAU1701_SERICTL_LEFTJ;
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seroctl |= ADAU1701_SEROCTL_MSB_DEALY0;
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invert_lrclk = !invert_lrclk;
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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serictl |= ADAU1701_SERICTL_RIGHTJ_24;
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seroctl |= ADAU1701_SEROCTL_MSB_DEALY8;
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invert_lrclk = !invert_lrclk;
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break;
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default:
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return -EINVAL;
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}
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if (invert_lrclk) {
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seroctl |= ADAU1701_SEROCTL_INV_LRCLK;
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serictl |= ADAU1701_SERICTL_INV_LRCLK;
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}
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adau1701->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
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snd_soc_write(codec, ADAU1701_SERICTL, serictl);
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snd_soc_update_bits(codec, ADAU1701_SEROCTL,
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~ADAU1701_SEROCTL_WORD_LEN_MASK, seroctl);
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return 0;
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}
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static int adau1701_set_bias_level(struct snd_soc_codec *codec,
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enum snd_soc_bias_level level)
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{
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unsigned int mask = ADAU1701_AUXNPOW_VBPD | ADAU1701_AUXNPOW_VRPD;
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switch (level) {
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case SND_SOC_BIAS_ON:
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break;
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case SND_SOC_BIAS_PREPARE:
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break;
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case SND_SOC_BIAS_STANDBY:
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/* Enable VREF and VREF buffer */
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snd_soc_update_bits(codec, ADAU1701_AUXNPOW, mask, 0x00);
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break;
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case SND_SOC_BIAS_OFF:
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/* Disable VREF and VREF buffer */
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snd_soc_update_bits(codec, ADAU1701_AUXNPOW, mask, mask);
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break;
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}
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codec->dapm.bias_level = level;
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return 0;
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}
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static int adau1701_digital_mute(struct snd_soc_dai *dai, int mute)
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{
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struct snd_soc_codec *codec = dai->codec;
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unsigned int mask = ADAU1701_DSPCTRL_DAM;
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unsigned int val;
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if (mute)
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val = 0;
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else
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val = mask;
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snd_soc_update_bits(codec, ADAU1701_DSPCTRL, mask, val);
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return 0;
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}
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static int adau1701_set_sysclk(struct snd_soc_codec *codec, int clk_id,
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int source, unsigned int freq, int dir)
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{
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unsigned int val;
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switch (clk_id) {
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case ADAU1701_CLK_SRC_OSC:
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val = 0x0;
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break;
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case ADAU1701_CLK_SRC_MCLK:
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val = ADAU1701_OSCIPOW_OPD;
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break;
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default:
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return -EINVAL;
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}
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snd_soc_update_bits(codec, ADAU1701_OSCIPOW, ADAU1701_OSCIPOW_OPD, val);
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return 0;
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}
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#define ADAU1701_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | \
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SNDRV_PCM_RATE_192000)
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#define ADAU1701_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
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SNDRV_PCM_FMTBIT_S24_LE)
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static const struct snd_soc_dai_ops adau1701_dai_ops = {
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.set_fmt = adau1701_set_dai_fmt,
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.hw_params = adau1701_hw_params,
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.digital_mute = adau1701_digital_mute,
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};
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static struct snd_soc_dai_driver adau1701_dai = {
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.name = "adau1701",
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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 = 8,
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.rates = ADAU1701_RATES,
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.formats = ADAU1701_FORMATS,
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},
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.capture = {
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.stream_name = "Capture",
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.channels_min = 2,
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.channels_max = 8,
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.rates = ADAU1701_RATES,
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.formats = ADAU1701_FORMATS,
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},
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.ops = &adau1701_dai_ops,
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.symmetric_rates = 1,
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};
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static int adau1701_probe(struct snd_soc_codec *codec)
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{
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int ret;
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codec->control_data = to_i2c_client(codec->dev);
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ret = adau1701_load_firmware(codec);
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if (ret)
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dev_warn(codec->dev, "Failed to load firmware\n");
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snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT);
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snd_soc_write(codec, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR);
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return 0;
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}
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static struct snd_soc_codec_driver adau1701_codec_drv = {
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.probe = adau1701_probe,
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.set_bias_level = adau1701_set_bias_level,
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.idle_bias_off = true,
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.reg_cache_size = ADAU1701_NUM_REGS,
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.reg_word_size = sizeof(u16),
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.controls = adau1701_controls,
|
|
.num_controls = ARRAY_SIZE(adau1701_controls),
|
|
.dapm_widgets = adau1701_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(adau1701_dapm_widgets),
|
|
.dapm_routes = adau1701_dapm_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(adau1701_dapm_routes),
|
|
|
|
.write = adau1701_write,
|
|
.read = adau1701_read,
|
|
|
|
.set_sysclk = adau1701_set_sysclk,
|
|
};
|
|
|
|
static int adau1701_i2c_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct adau1701 *adau1701;
|
|
int ret;
|
|
|
|
adau1701 = devm_kzalloc(&client->dev, sizeof(*adau1701), GFP_KERNEL);
|
|
if (!adau1701)
|
|
return -ENOMEM;
|
|
|
|
i2c_set_clientdata(client, adau1701);
|
|
ret = snd_soc_register_codec(&client->dev, &adau1701_codec_drv,
|
|
&adau1701_dai, 1);
|
|
return ret;
|
|
}
|
|
|
|
static int adau1701_i2c_remove(struct i2c_client *client)
|
|
{
|
|
snd_soc_unregister_codec(&client->dev);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id adau1701_i2c_id[] = {
|
|
{ "adau1701", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, adau1701_i2c_id);
|
|
|
|
static struct i2c_driver adau1701_i2c_driver = {
|
|
.driver = {
|
|
.name = "adau1701",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = adau1701_i2c_probe,
|
|
.remove = adau1701_i2c_remove,
|
|
.id_table = adau1701_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(adau1701_i2c_driver);
|
|
|
|
MODULE_DESCRIPTION("ASoC ADAU1701 SigmaDSP driver");
|
|
MODULE_AUTHOR("Cliff Cai <cliff.cai@analog.com>");
|
|
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
|
|
MODULE_LICENSE("GPL");
|