// SPDX-License-Identifier: GPL-2.0
//
// Ingenic JZ4760 CODEC driver
//
// Copyright (C) 2021, Christophe Branchereau <cbranchereau@gmail.com>
// Copyright (C) 2021, Paul Cercueil <paul@crapouillou.net>
#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/time64.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#define ICDC_RGADW_OFFSET 0x00
#define ICDC_RGDATA_OFFSET 0x04
/* ICDC internal register access control register(RGADW) */
#define ICDC_RGADW_RGWR BIT(16)
#define ICDC_RGADW_RGADDR_MASK GENMASK(14, 8)
#define ICDC_RGADW_RGDIN_MASK GENMASK(7, 0)
/* ICDC internal register data output register (RGDATA)*/
#define ICDC_RGDATA_IRQ BIT(8)
#define ICDC_RGDATA_RGDOUT_MASK GENMASK(7, 0)
/* Internal register space, accessed through regmap */
enum {
JZ4760_CODEC_REG_SR,
JZ4760_CODEC_REG_AICR,
JZ4760_CODEC_REG_CR1,
JZ4760_CODEC_REG_CR2,
JZ4760_CODEC_REG_CR3,
JZ4760_CODEC_REG_CR4,
JZ4760_CODEC_REG_CCR1,
JZ4760_CODEC_REG_CCR2,
JZ4760_CODEC_REG_PMR1,
JZ4760_CODEC_REG_PMR2,
JZ4760_CODEC_REG_ICR,
JZ4760_CODEC_REG_IFR,
JZ4760_CODEC_REG_GCR1,
JZ4760_CODEC_REG_GCR2,
JZ4760_CODEC_REG_GCR3,
JZ4760_CODEC_REG_GCR4,
JZ4760_CODEC_REG_GCR5,
JZ4760_CODEC_REG_GCR6,
JZ4760_CODEC_REG_GCR7,
JZ4760_CODEC_REG_GCR8,
JZ4760_CODEC_REG_GCR9,
JZ4760_CODEC_REG_AGC1,
JZ4760_CODEC_REG_AGC2,
JZ4760_CODEC_REG_AGC3,
JZ4760_CODEC_REG_AGC4,
JZ4760_CODEC_REG_AGC5,
JZ4760_CODEC_REG_MIX1,
JZ4760_CODEC_REG_MIX2,
};
#define REG_AICR_DAC_ADWL_MASK GENMASK(7, 6)
#define REG_AICR_DAC_SERIAL BIT(3)
#define REG_AICR_DAC_I2S BIT(1)
#define REG_AICR_ADC_ADWL_MASK GENMASK(5, 4)
#define REG_AICR_ADC_SERIAL BIT(2)
#define REG_AICR_ADC_I2S BIT(0)
#define REG_CR1_HP_LOAD BIT(7)
#define REG_CR1_HP_MUTE BIT(5)
#define REG_CR1_LO_MUTE_OFFSET 4
#define REG_CR1_BTL_MUTE_OFFSET 3
#define REG_CR1_OUTSEL_OFFSET 0
#define REG_CR1_OUTSEL_MASK GENMASK(1, REG_CR1_OUTSEL_OFFSET)
#define REG_CR2_DAC_MONO BIT(7)
#define REG_CR2_DAC_MUTE BIT(5)
#define REG_CR2_DAC_NOMAD BIT(1)
#define REG_CR2_DAC_RIGHT_ONLY BIT(0)
#define REG_CR3_ADC_INSEL_OFFSET 2
#define REG_CR3_ADC_INSEL_MASK GENMASK(3, REG_CR3_ADC_INSEL_OFFSET)
#define REG_CR3_MICSTEREO_OFFSET 1
#define REG_CR3_MICDIFF_OFFSET 0
#define REG_CR4_ADC_HPF_OFFSET 7
#define REG_CR4_ADC_RIGHT_ONLY BIT(0)
#define REG_CCR1_CRYSTAL_MASK GENMASK(3, 0)
#define REG_CCR2_DAC_FREQ_MASK GENMASK(7, 4)
#define REG_CCR2_ADC_FREQ_MASK GENMASK(3, 0)
#define REG_PMR1_SB BIT(7)
#define REG_PMR1_SB_SLEEP BIT(6)
#define REG_PMR1_SB_AIP_OFFSET 5
#define REG_PMR1_SB_LINE_OFFSET 4
#define REG_PMR1_SB_MIC1_OFFSET 3
#define REG_PMR1_SB_MIC2_OFFSET 2
#define REG_PMR1_SB_BYPASS_OFFSET 1
#define REG_PMR1_SB_MICBIAS_OFFSET 0
#define REG_PMR2_SB_ADC_OFFSET 4
#define REG_PMR2_SB_HP_OFFSET 3
#define REG_PMR2_SB_BTL_OFFSET 2
#define REG_PMR2_SB_LOUT_OFFSET 1
#define REG_PMR2_SB_DAC_OFFSET 0
#define REG_ICR_INT_FORM_MASK GENMASK(7, 6)
#define REG_ICR_ALL_MASK GENMASK(5, 0)
#define REG_ICR_JACK_MASK BIT(5)
#define REG_ICR_SCMC_MASK BIT(4)
#define REG_ICR_RUP_MASK BIT(3)
#define REG_ICR_RDO_MASK BIT(2)
#define REG_ICR_GUP_MASK BIT(1)
#define REG_ICR_GDO_MASK BIT(0)
#define REG_IFR_ALL_MASK GENMASK(5, 0)
#define REG_IFR_JACK BIT(6)
#define REG_IFR_JACK_EVENT BIT(5)
#define REG_IFR_SCMC BIT(4)
#define REG_IFR_RUP BIT(3)
#define REG_IFR_RDO BIT(2)
#define REG_IFR_GUP BIT(1)
#define REG_IFR_GDO BIT(0)
#define REG_GCR_GAIN_OFFSET 0
#define REG_GCR_GAIN_MAX 0x1f
#define REG_GCR_RL BIT(7)
#define REG_GCR_GIM1_MASK GENMASK(5, 3)
#define REG_GCR_GIM2_MASK GENMASK(2, 0)
#define REG_GCR_GIM_GAIN_MAX 7
#define REG_AGC1_EN BIT(7)
#define REG_AGC1_TARGET_MASK GENMASK(5, 2)
#define REG_AGC2_NG_THR_MASK GENMASK(6, 4)
#define REG_AGC2_HOLD_MASK GENMASK(3, 0)
#define REG_AGC3_ATK_MASK GENMASK(7, 4)
#define REG_AGC3_DCY_MASK GENMASK(3, 0)
#define REG_AGC4_AGC_MAX_MASK GENMASK(4, 0)
#define REG_AGC5_AGC_MIN_MASK GENMASK(4, 0)
#define REG_MIX1_MIX_REC_MASK GENMASK(7, 6)
#define REG_MIX1_GIMIX_MASK GENMASK(4, 0)
#define REG_MIX2_DAC_MIX_MASK GENMASK(7, 6)
#define REG_MIX2_GOMIX_MASK GENMASK(4, 0)
/* codec private data */
struct jz_codec {
struct device *dev;
struct regmap *regmap;
void __iomem *base;
struct clk *clk;
};
static int jz4760_codec_set_bias_level(struct snd_soc_component *codec,
enum snd_soc_bias_level level)
{
struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
struct regmap *regmap = jz_codec->regmap;
switch (level) {
case SND_SOC_BIAS_PREPARE:
/* Reset all interrupt flags. */
regmap_write(regmap, JZ4760_CODEC_REG_IFR, REG_IFR_ALL_MASK);
regmap_clear_bits(regmap, JZ4760_CODEC_REG_PMR1, REG_PMR1_SB);
msleep(250);
regmap_clear_bits(regmap, JZ4760_CODEC_REG_PMR1, REG_PMR1_SB_SLEEP);
msleep(400);
break;
case SND_SOC_BIAS_STANDBY:
regmap_set_bits(regmap, JZ4760_CODEC_REG_PMR1, REG_PMR1_SB_SLEEP);
regmap_set_bits(regmap, JZ4760_CODEC_REG_PMR1, REG_PMR1_SB);
break;
default:
break;
}
return 0;
}
static int jz4760_codec_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *codec = dai->component;
struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(codec);
int ret;
/*
* SYSCLK output from the codec to the AIC is required to keep the
* DMA transfer going during playback when all audible outputs have
* been disabled.
*/
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
ret = snd_soc_dapm_force_enable_pin(dapm, "SYSCLK");
return 0;
}
static void jz4760_codec_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *codec = dai->component;
struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(codec);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
snd_soc_dapm_disable_pin(dapm, "SYSCLK");
}
static int jz4760_codec_pcm_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
struct snd_soc_component *codec = dai->component;
int ret = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
snd_soc_component_force_bias_level(codec, SND_SOC_BIAS_ON);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
/* do nothing */
break;
default:
ret = -EINVAL;
}
return ret;
}
static int jz4760_codec_mute_stream(struct snd_soc_dai *dai, int mute, int direction)
{
struct snd_soc_component *codec = dai->component;
struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
unsigned int gain_bit = mute ? REG_IFR_GDO : REG_IFR_GUP;
unsigned int val, reg;
int change, err;
change = snd_soc_component_update_bits(codec, JZ4760_CODEC_REG_CR2,
REG_CR2_DAC_MUTE,
mute ? REG_CR2_DAC_MUTE : 0);
if (change == 1) {
regmap_read(jz_codec->regmap, JZ4760_CODEC_REG_PMR2, &val);
if (val & BIT(REG_PMR2_SB_DAC_OFFSET))
return 1;
err = regmap_read_poll_timeout(jz_codec->regmap,
JZ4760_CODEC_REG_IFR,
val, val & gain_bit,
1000, 1 * USEC_PER_SEC);
if (err) {
dev_err(jz_codec->dev,
"Timeout while setting digital mute: %d", err);
return err;
}
/* clear GUP/GDO flag */
regmap_write(jz_codec->regmap, JZ4760_CODEC_REG_IFR, gain_bit);
}
regmap_read(jz_codec->regmap, JZ4760_CODEC_REG_CR2, ®);
return 0;
}
/* unit: 0.01dB */
static const DECLARE_TLV_DB_MINMAX_MUTE(dac_tlv, -3100, 100);
static const DECLARE_TLV_DB_SCALE(adc_tlv, 0, 100, 0);
static const DECLARE_TLV_DB_MINMAX(out_tlv, -2500, 100);
static const DECLARE_TLV_DB_SCALE(linein_tlv, -2500, 100, 0);
/* Unconditional controls. */
static const struct snd_kcontrol_new jz4760_codec_snd_controls[] = {
/* record gain control */
SOC_DOUBLE_R_TLV("PCM Capture Volume",
JZ4760_CODEC_REG_GCR9, JZ4760_CODEC_REG_GCR8,
REG_GCR_GAIN_OFFSET, REG_GCR_GAIN_MAX, 0, adc_tlv),
SOC_DOUBLE_R_TLV("Line In Bypass Playback Volume",
JZ4760_CODEC_REG_GCR4, JZ4760_CODEC_REG_GCR3,
REG_GCR_GAIN_OFFSET, REG_GCR_GAIN_MAX, 1, linein_tlv),
SOC_SINGLE("High-Pass Filter Capture Switch",
JZ4760_CODEC_REG_CR4,
REG_CR4_ADC_HPF_OFFSET, 1, 0),
};
static const struct snd_kcontrol_new jz4760_codec_pcm_playback_controls[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Volume",
.info = snd_soc_info_volsw,
.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ
| SNDRV_CTL_ELEM_ACCESS_READWRITE,
.tlv.p = dac_tlv,
.get = snd_soc_dapm_get_volsw,
.put = snd_soc_dapm_put_volsw,
.private_value = SOC_DOUBLE_R_VALUE(JZ4760_CODEC_REG_GCR6,
JZ4760_CODEC_REG_GCR5,
REG_GCR_GAIN_OFFSET,
REG_GCR_GAIN_MAX, 1),
},
};
static const struct snd_kcontrol_new jz4760_codec_hp_playback_controls[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Volume",
.info = snd_soc_info_volsw,
.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ
| SNDRV_CTL_ELEM_ACCESS_READWRITE,
.tlv.p = out_tlv,
.get = snd_soc_dapm_get_volsw,
.put = snd_soc_dapm_put_volsw,
.private_value = SOC_DOUBLE_R_VALUE(JZ4760_CODEC_REG_GCR2,
JZ4760_CODEC_REG_GCR1,
REG_GCR_GAIN_OFFSET,
REG_GCR_GAIN_MAX, 1),
},
};
static int hpout_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_component *codec = snd_soc_dapm_to_component(w->dapm);
struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
unsigned int val;
int err;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
/* unmute HP */
regmap_clear_bits(jz_codec->regmap, JZ4760_CODEC_REG_CR1,
REG_CR1_HP_MUTE);
break;
case SND_SOC_DAPM_POST_PMU:
/* wait for ramp-up complete (RUP) */
err = regmap_read_poll_timeout(jz_codec->regmap,
JZ4760_CODEC_REG_IFR,
val, val & REG_IFR_RUP,
1000, 1 * USEC_PER_SEC);
if (err) {
dev_err(jz_codec->dev, "RUP timeout: %d", err);
return err;
}
/* clear RUP flag */
regmap_set_bits(jz_codec->regmap, JZ4760_CODEC_REG_IFR,
REG_IFR_RUP);
break;
case SND_SOC_DAPM_POST_PMD:
/* mute HP */
regmap_set_bits(jz_codec->regmap, JZ4760_CODEC_REG_CR1,
REG_CR1_HP_MUTE);
err = regmap_read_poll_timeout(jz_codec->regmap,
JZ4760_CODEC_REG_IFR,
val, val & REG_IFR_RDO,
1000, 1 * USEC_PER_SEC);
if (err) {
dev_err(jz_codec->dev, "RDO timeout: %d", err);
return err;
}
/* clear RDO flag */
regmap_set_bits(jz_codec->regmap, JZ4760_CODEC_REG_IFR,
REG_IFR_RDO);
break;
}
return 0;
}
static const char * const jz4760_codec_hp_texts[] = {
"PCM", "Line In", "Mic 1", "Mic 2"
};
static const unsigned int jz4760_codec_hp_values[] = { 3, 2, 0, 1 };
static SOC_VALUE_ENUM_SINGLE_DECL(jz4760_codec_hp_enum,
JZ4760_CODEC_REG_CR1,
REG_CR1_OUTSEL_OFFSET,
REG_CR1_OUTSEL_MASK >> REG_CR1_OUTSEL_OFFSET,
jz4760_codec_hp_texts,
jz4760_codec_hp_values);
static const struct snd_kcontrol_new jz4760_codec_hp_source =
SOC_DAPM_ENUM("Route", jz4760_codec_hp_enum);
static const char * const jz4760_codec_cap_texts[] = {
"Line In", "Mic 1", "Mic 2"
};
static const unsigned int jz4760_codec_cap_values[] = { 2, 0, 1 };
static SOC_VALUE_ENUM_SINGLE_DECL(jz4760_codec_cap_enum,
JZ4760_CODEC_REG_CR3,
REG_CR3_ADC_INSEL_OFFSET,
REG_CR3_ADC_INSEL_MASK >> REG_CR3_ADC_INSEL_OFFSET,
jz4760_codec_cap_texts,
jz4760_codec_cap_values);
static const struct snd_kcontrol_new jz4760_codec_cap_source =
SOC_DAPM_ENUM("Route", jz4760_codec_cap_enum);
static const struct snd_kcontrol_new jz4760_codec_mic_controls[] = {
SOC_DAPM_SINGLE("Stereo Capture Switch", JZ4760_CODEC_REG_CR3,
REG_CR3_MICSTEREO_OFFSET, 1, 0),
};
static const struct snd_kcontrol_new jz4760_codec_line_out_switch =
SOC_DAPM_SINGLE("Switch", JZ4760_CODEC_REG_CR1,
REG_CR1_LO_MUTE_OFFSET, 0, 0);
static const struct snd_kcontrol_new jz4760_codec_btl_out_switch =
SOC_DAPM_SINGLE("Switch", JZ4760_CODEC_REG_CR1,
REG_CR1_BTL_MUTE_OFFSET, 0, 0);
static const struct snd_soc_dapm_widget jz4760_codec_dapm_widgets[] = {
SND_SOC_DAPM_PGA_E("HP Out", JZ4760_CODEC_REG_PMR2,
REG_PMR2_SB_HP_OFFSET, 1, NULL, 0, hpout_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SWITCH("Line Out", JZ4760_CODEC_REG_PMR2,
REG_PMR2_SB_LOUT_OFFSET, 1,
&jz4760_codec_line_out_switch),
SND_SOC_DAPM_SWITCH("BTL Out", JZ4760_CODEC_REG_PMR2,
REG_PMR2_SB_BTL_OFFSET, 1,
&jz4760_codec_btl_out_switch),
SND_SOC_DAPM_PGA("Line In", JZ4760_CODEC_REG_PMR1,
REG_PMR1_SB_LINE_OFFSET, 1, NULL, 0),
SND_SOC_DAPM_MUX("Headphones Source", SND_SOC_NOPM, 0, 0,
&jz4760_codec_hp_source),
SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
&jz4760_codec_cap_source),
SND_SOC_DAPM_PGA("Mic 1", JZ4760_CODEC_REG_PMR1,
REG_PMR1_SB_MIC1_OFFSET, 1, NULL, 0),
SND_SOC_DAPM_PGA("Mic 2", JZ4760_CODEC_REG_PMR1,
REG_PMR1_SB_MIC2_OFFSET, 1, NULL, 0),
SND_SOC_DAPM_PGA("Mic Diff", JZ4760_CODEC_REG_CR3,
REG_CR3_MICDIFF_OFFSET, 0, NULL, 0),
SND_SOC_DAPM_MIXER("Mic", SND_SOC_NOPM, 0, 0,
jz4760_codec_mic_controls,
ARRAY_SIZE(jz4760_codec_mic_controls)),
SND_SOC_DAPM_PGA("Line In Bypass", JZ4760_CODEC_REG_PMR1,
REG_PMR1_SB_BYPASS_OFFSET, 1, NULL, 0),
SND_SOC_DAPM_ADC("ADC", "Capture", JZ4760_CODEC_REG_PMR2,
REG_PMR2_SB_ADC_OFFSET, 1),
SND_SOC_DAPM_DAC("DAC", "Playback", JZ4760_CODEC_REG_PMR2,
REG_PMR2_SB_DAC_OFFSET, 1),
SND_SOC_DAPM_MIXER("PCM Playback", SND_SOC_NOPM, 0, 0,
jz4760_codec_pcm_playback_controls,
ARRAY_SIZE(jz4760_codec_pcm_playback_controls)),
SND_SOC_DAPM_MIXER("Headphones Playback", SND_SOC_NOPM, 0, 0,
jz4760_codec_hp_playback_controls,
ARRAY_SIZE(jz4760_codec_hp_playback_controls)),
SND_SOC_DAPM_SUPPLY("MICBIAS", JZ4760_CODEC_REG_PMR1,
REG_PMR1_SB_MICBIAS_OFFSET, 1, NULL, 0),
SND_SOC_DAPM_INPUT("MIC1P"),
SND_SOC_DAPM_INPUT("MIC1N"),
SND_SOC_DAPM_INPUT("MIC2P"),
SND_SOC_DAPM_INPUT("MIC2N"),
SND_SOC_DAPM_INPUT("LLINEIN"),
SND_SOC_DAPM_INPUT("RLINEIN"),
SND_SOC_DAPM_OUTPUT("LHPOUT"),
SND_SOC_DAPM_OUTPUT("RHPOUT"),
SND_SOC_DAPM_OUTPUT("LOUT"),
SND_SOC_DAPM_OUTPUT("ROUT"),
SND_SOC_DAPM_OUTPUT("BTLP"),
SND_SOC_DAPM_OUTPUT("BTLN"),
SND_SOC_DAPM_OUTPUT("SYSCLK"),
};
/* Unconditional routes. */
static const struct snd_soc_dapm_route jz4760_codec_dapm_routes[] = {
{ "Mic 1", NULL, "MIC1P" },
{ "Mic Diff", NULL, "MIC1N" },
{ "Mic 1", NULL, "Mic Diff" },
{ "Mic 2", NULL, "MIC2P" },
{ "Mic Diff", NULL, "MIC2N" },
{ "Mic 2", NULL, "Mic Diff" },
{ "Line In", NULL, "LLINEIN" },
{ "Line In", NULL, "RLINEIN" },
{ "Mic", "Stereo Capture Switch", "Mic 1" },
{ "Mic", "Stereo Capture Switch", "Mic 2" },
{ "Headphones Source", "Mic 1", "Mic" },
{ "Headphones Source", "Mic 2", "Mic" },
{ "Capture Source", "Mic 1", "Mic" },
{ "Capture Source", "Mic 2", "Mic" },
{ "Capture Source", "Line In", "Line In" },
{ "Capture Source", "Mic 1", "Mic 1" },
{ "Capture Source", "Mic 2", "Mic 2" },
{ "ADC", NULL, "Capture Source" },
{ "Line In Bypass", NULL, "Line In" },
{ "Headphones Source", "Mic 1", "Mic 1" },
{ "Headphones Source", "Mic 2", "Mic 2" },
{ "Headphones Source", "Line In", "Line In Bypass" },
{ "Headphones Source", "PCM", "Headphones Playback" },
{ "HP Out", NULL, "Headphones Source" },
{ "LHPOUT", NULL, "HP Out" },
{ "RHPOUT", NULL, "HP Out" },
{ "Line Out", "Switch", "HP Out" },
{ "LOUT", NULL, "Line Out" },
{ "ROUT", NULL, "Line Out" },
{ "BTL Out", "Switch", "Line Out" },
{ "BTLP", NULL, "BTL Out"},
{ "BTLN", NULL, "BTL Out"},
{ "PCM Playback", "Volume", "DAC" },
{ "Headphones Playback", "Volume", "PCM Playback" },
{ "SYSCLK", NULL, "DAC" },
};
static void jz4760_codec_codec_init_regs(struct snd_soc_component *codec)
{
struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
struct regmap *regmap = jz_codec->regmap;
/* Collect updates for later sending. */
regcache_cache_only(regmap, true);
/* default Amp output to PCM */
regmap_set_bits(regmap, JZ4760_CODEC_REG_CR1, REG_CR1_OUTSEL_MASK);
/* Disable stereo mic */
regmap_clear_bits(regmap, JZ4760_CODEC_REG_CR3,
BIT(REG_CR3_MICSTEREO_OFFSET));
/* Set mic 1 as default source for ADC */
regmap_clear_bits(regmap, JZ4760_CODEC_REG_CR3,
REG_CR3_ADC_INSEL_MASK);
/* ADC/DAC: serial + i2s */
regmap_set_bits(regmap, JZ4760_CODEC_REG_AICR,
REG_AICR_ADC_SERIAL | REG_AICR_ADC_I2S |
REG_AICR_DAC_SERIAL | REG_AICR_DAC_I2S);
/* The generated IRQ is a high level */
regmap_clear_bits(regmap, JZ4760_CODEC_REG_ICR, REG_ICR_INT_FORM_MASK);
regmap_update_bits(regmap, JZ4760_CODEC_REG_ICR, REG_ICR_ALL_MASK,
REG_ICR_JACK_MASK | REG_ICR_RUP_MASK |
REG_ICR_RDO_MASK | REG_ICR_GUP_MASK |
REG_ICR_GDO_MASK);
/* 12M oscillator */
regmap_clear_bits(regmap, JZ4760_CODEC_REG_CCR1, REG_CCR1_CRYSTAL_MASK);
/* 0: 16ohm/220uF, 1: 10kohm/1uF */
regmap_clear_bits(regmap, JZ4760_CODEC_REG_CR1, REG_CR1_HP_LOAD);
/* default to NOMAD */
regmap_set_bits(jz_codec->regmap, JZ4760_CODEC_REG_CR2,
REG_CR2_DAC_NOMAD);
/* disable automatic gain */
regmap_clear_bits(regmap, JZ4760_CODEC_REG_AGC1, REG_AGC1_EN);
/* Independent L/R DAC gain control */
regmap_clear_bits(regmap, JZ4760_CODEC_REG_GCR5,
REG_GCR_RL);
/* Send collected updates. */
regcache_cache_only(regmap, false);
regcache_sync(regmap);
}
static int jz4760_codec_codec_probe(struct snd_soc_component *codec)
{
struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
clk_prepare_enable(jz_codec->clk);
jz4760_codec_codec_init_regs(codec);
return 0;
}
static void jz4760_codec_codec_remove(struct snd_soc_component *codec)
{
struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
clk_disable_unprepare(jz_codec->clk);
}
static const struct snd_soc_component_driver jz4760_codec_soc_codec_dev = {
.probe = jz4760_codec_codec_probe,
.remove = jz4760_codec_codec_remove,
.set_bias_level = jz4760_codec_set_bias_level,
.controls = jz4760_codec_snd_controls,
.num_controls = ARRAY_SIZE(jz4760_codec_snd_controls),
.dapm_widgets = jz4760_codec_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(jz4760_codec_dapm_widgets),
.dapm_routes = jz4760_codec_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(jz4760_codec_dapm_routes),
.suspend_bias_off = 1,
.use_pmdown_time = 1,
};
static const unsigned int jz4760_codec_sample_rates[] = {
96000, 48000, 44100, 32000,
24000, 22050, 16000, 12000,
11025, 9600, 8000,
};
static int jz4760_codec_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct jz_codec *codec = snd_soc_component_get_drvdata(dai->component);
unsigned int rate, bit_width;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
bit_width = 0;
break;
case SNDRV_PCM_FORMAT_S18_3LE:
bit_width = 1;
break;
case SNDRV_PCM_FORMAT_S20_3LE:
bit_width = 2;
break;
case SNDRV_PCM_FORMAT_S24_3LE:
bit_width = 3;
break;
default:
return -EINVAL;
}
for (rate = 0; rate < ARRAY_SIZE(jz4760_codec_sample_rates); rate++) {
if (jz4760_codec_sample_rates[rate] == params_rate(params))
break;
}
if (rate == ARRAY_SIZE(jz4760_codec_sample_rates))
return -EINVAL;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
regmap_update_bits(codec->regmap, JZ4760_CODEC_REG_AICR,
REG_AICR_DAC_ADWL_MASK,
FIELD_PREP(REG_AICR_DAC_ADWL_MASK, bit_width));
regmap_update_bits(codec->regmap, JZ4760_CODEC_REG_CCR2,
REG_CCR2_DAC_FREQ_MASK,
FIELD_PREP(REG_CCR2_DAC_FREQ_MASK, rate));
} else {
regmap_update_bits(codec->regmap, JZ4760_CODEC_REG_AICR,
REG_AICR_ADC_ADWL_MASK,
FIELD_PREP(REG_AICR_ADC_ADWL_MASK, bit_width));
regmap_update_bits(codec->regmap, JZ4760_CODEC_REG_CCR2,
REG_CCR2_ADC_FREQ_MASK,
FIELD_PREP(REG_CCR2_ADC_FREQ_MASK, rate));
}
return 0;
}
static const struct snd_soc_dai_ops jz4760_codec_dai_ops = {
.startup = jz4760_codec_startup,
.shutdown = jz4760_codec_shutdown,
.hw_params = jz4760_codec_hw_params,
.trigger = jz4760_codec_pcm_trigger,
.mute_stream = jz4760_codec_mute_stream,
.no_capture_mute = 1,
};
#define JZ_CODEC_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S18_3LE | \
SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_3LE)
static struct snd_soc_dai_driver jz4760_codec_dai = {
.name = "jz4760-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = JZ_CODEC_FORMATS,
},
.capture = {
.stream_name = "Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = JZ_CODEC_FORMATS,
},
.ops = &jz4760_codec_dai_ops,
};
static bool jz4760_codec_volatile(struct device *dev, unsigned int reg)
{
return reg == JZ4760_CODEC_REG_SR || reg == JZ4760_CODEC_REG_IFR;
}
static bool jz4760_codec_writeable(struct device *dev, unsigned int reg)
{
switch (reg) {
case JZ4760_CODEC_REG_SR:
return false;
default:
return true;
}
}
static int jz4760_codec_io_wait(struct jz_codec *codec)
{
u32 reg;
return readl_poll_timeout(codec->base + ICDC_RGADW_OFFSET, reg,
!(reg & ICDC_RGADW_RGWR),
1000, 1 * USEC_PER_SEC);
}
static int jz4760_codec_reg_read(void *context, unsigned int reg,
unsigned int *val)
{
struct jz_codec *codec = context;
unsigned int i;
u32 tmp;
int ret;
ret = jz4760_codec_io_wait(codec);
if (ret)
return ret;
tmp = readl(codec->base + ICDC_RGADW_OFFSET);
tmp &= ~ICDC_RGADW_RGADDR_MASK;
tmp |= FIELD_PREP(ICDC_RGADW_RGADDR_MASK, reg);
writel(tmp, codec->base + ICDC_RGADW_OFFSET);
/* wait 6+ cycles */
for (i = 0; i < 6; i++)
*val = readl(codec->base + ICDC_RGDATA_OFFSET) &
ICDC_RGDATA_RGDOUT_MASK;
return 0;
}
static int jz4760_codec_reg_write(void *context, unsigned int reg,
unsigned int val)
{
struct jz_codec *codec = context;
int ret;
ret = jz4760_codec_io_wait(codec);
if (ret)
return ret;
writel(ICDC_RGADW_RGWR | FIELD_PREP(ICDC_RGADW_RGADDR_MASK, reg) | val,
codec->base + ICDC_RGADW_OFFSET);
ret = jz4760_codec_io_wait(codec);
if (ret)
return ret;
return 0;
}
static const u8 jz4760_codec_reg_defaults[] = {
0x00, 0xFC, 0x1B, 0x20, 0x00, 0x80, 0x00, 0x00,
0xFF, 0x1F, 0x3F, 0x00, 0x06, 0x06, 0x06, 0x06,
0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x07, 0x44,
0x1F, 0x00, 0x00, 0x00
};
static struct regmap_config jz4760_codec_regmap_config = {
.reg_bits = 7,
.val_bits = 8,
.max_register = JZ4760_CODEC_REG_MIX2,
.volatile_reg = jz4760_codec_volatile,
.writeable_reg = jz4760_codec_writeable,
.reg_read = jz4760_codec_reg_read,
.reg_write = jz4760_codec_reg_write,
.reg_defaults_raw = jz4760_codec_reg_defaults,
.num_reg_defaults_raw = ARRAY_SIZE(jz4760_codec_reg_defaults),
.cache_type = REGCACHE_FLAT,
};
static int jz4760_codec_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct jz_codec *codec;
int ret;
codec = devm_kzalloc(dev, sizeof(*codec), GFP_KERNEL);
if (!codec)
return -ENOMEM;
codec->dev = dev;
codec->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(codec->base)) {
ret = PTR_ERR(codec->base);
dev_err(dev, "Failed to ioremap mmio memory: %d\n", ret);
return ret;
}
codec->regmap = devm_regmap_init(dev, NULL, codec,
&jz4760_codec_regmap_config);
if (IS_ERR(codec->regmap))
return PTR_ERR(codec->regmap);
codec->clk = devm_clk_get(dev, "aic");
if (IS_ERR(codec->clk))
return PTR_ERR(codec->clk);
platform_set_drvdata(pdev, codec);
ret = devm_snd_soc_register_component(dev, &jz4760_codec_soc_codec_dev,
&jz4760_codec_dai, 1);
if (ret) {
dev_err(dev, "Failed to register codec: %d\n", ret);
return ret;
}
return 0;
}
static const struct of_device_id jz4760_codec_of_matches[] = {
{ .compatible = "ingenic,jz4760-codec", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, jz4760_codec_of_matches);
static struct platform_driver jz4760_codec_driver = {
.probe = jz4760_codec_probe,
.driver = {
.name = "jz4760-codec",
.of_match_table = jz4760_codec_of_matches,
},
};
module_platform_driver(jz4760_codec_driver);
MODULE_DESCRIPTION("JZ4760 SoC internal codec driver");
MODULE_AUTHOR("Christophe Branchereau <cbranchereau@gmail.com>");
MODULE_AUTHOR("Paul Cercueil <paul@crapouillou.net>");
MODULE_LICENSE("GPL v2");
