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Diffstat (limited to 'sound/soc/codecs/max9867.c')
-rw-r--r--sound/soc/codecs/max9867.c205
1 files changed, 175 insertions, 30 deletions
diff --git a/sound/soc/codecs/max9867.c b/sound/soc/codecs/max9867.c
index fcb31144d69c..3b9dd158c34b 100644
--- a/sound/soc/codecs/max9867.c
+++ b/sound/soc/codecs/max9867.c
@@ -6,6 +6,7 @@
// Copyright 2018 Ladislav Michl <ladis@linux-mips.org>
//
+#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/module.h>
@@ -15,6 +16,15 @@
#include <sound/tlv.h>
#include "max9867.h"
+struct max9867_priv {
+ struct clk *mclk;
+ struct regmap *regmap;
+ const struct snd_pcm_hw_constraint_list *constraints;
+ unsigned int sysclk, pclk;
+ bool provider, dsp_a;
+ unsigned int adc_dac_active;
+};
+
static const char *const max9867_spmode[] = {
"Stereo Diff", "Mono Diff",
"Stereo Cap", "Mono Cap",
@@ -32,8 +42,102 @@ static const char *const max9867_adc_dac_filter_text[] = {
"Butterworth/8-24"
};
-static SOC_ENUM_SINGLE_DECL(max9867_filter, MAX9867_CODECFLTR, 7,
- max9867_filter_text);
+enum max9867_adc_dac {
+ MAX9867_ADC_LEFT,
+ MAX9867_ADC_RIGHT,
+ MAX9867_DAC_LEFT,
+ MAX9867_DAC_RIGHT,
+};
+
+static int max9867_adc_dac_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+ struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
+ enum max9867_adc_dac adc_dac;
+
+ if (!snd_soc_dapm_widget_name_cmp(w, "ADCL"))
+ adc_dac = MAX9867_ADC_LEFT;
+ else if (!snd_soc_dapm_widget_name_cmp(w, "ADCR"))
+ adc_dac = MAX9867_ADC_RIGHT;
+ else if (!snd_soc_dapm_widget_name_cmp(w, "DACL"))
+ adc_dac = MAX9867_DAC_LEFT;
+ else if (!snd_soc_dapm_widget_name_cmp(w, "DACR"))
+ adc_dac = MAX9867_DAC_RIGHT;
+ else
+ return 0;
+
+ if (SND_SOC_DAPM_EVENT_ON(event))
+ max9867->adc_dac_active |= BIT(adc_dac);
+ else if (SND_SOC_DAPM_EVENT_OFF(event))
+ max9867->adc_dac_active &= ~BIT(adc_dac);
+
+ return 0;
+}
+
+static int max9867_filter_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
+ unsigned int reg;
+ int ret;
+
+ ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, &reg);
+ if (ret)
+ return -EINVAL;
+
+ if (reg & MAX9867_CODECFLTR_MODE)
+ ucontrol->value.enumerated.item[0] = 1;
+ else
+ ucontrol->value.enumerated.item[0] = 0;
+
+ return 0;
+}
+
+static int max9867_filter_set(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
+ unsigned int reg, mode = ucontrol->value.enumerated.item[0];
+ int ret;
+
+ if (mode > 1)
+ return -EINVAL;
+
+ /* don't allow change if ADC/DAC active */
+ if (max9867->adc_dac_active)
+ return -EBUSY;
+
+ /* read current filter mode */
+ ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, &reg);
+ if (ret)
+ return -EINVAL;
+
+ if (mode)
+ mode = MAX9867_CODECFLTR_MODE;
+
+ /* check if change is needed */
+ if ((reg & MAX9867_CODECFLTR_MODE) == mode)
+ return 0;
+
+ /* shutdown codec before switching filter mode */
+ regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
+ MAX9867_PWRMAN_SHDN, 0);
+
+ /* switch filter mode */
+ regmap_update_bits(max9867->regmap, MAX9867_CODECFLTR,
+ MAX9867_CODECFLTR_MODE, mode);
+
+ /* out of shutdown now */
+ regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
+ MAX9867_PWRMAN_SHDN, MAX9867_PWRMAN_SHDN);
+
+ return 0;
+}
+
+static SOC_ENUM_SINGLE_EXT_DECL(max9867_filter, max9867_filter_text);
static SOC_ENUM_SINGLE_DECL(max9867_dac_filter, MAX9867_CODECFLTR, 0,
max9867_adc_dac_filter_text);
static SOC_ENUM_SINGLE_DECL(max9867_adc_filter, MAX9867_CODECFLTR, 4,
@@ -76,7 +180,7 @@ static const struct snd_kcontrol_new max9867_snd_controls[] = {
SOC_ENUM("Speaker Mode", max9867_spkmode),
SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0),
SOC_SINGLE("Line ZC Switch", MAX9867_MODECONFIG, 5, 1, 0),
- SOC_ENUM("DSP Filter", max9867_filter),
+ SOC_ENUM_EXT("DSP Filter", max9867_filter, max9867_filter_get, max9867_filter_set),
SOC_ENUM("ADC Filter", max9867_adc_filter),
SOC_ENUM("DAC Filter", max9867_dac_filter),
SOC_SINGLE("Mono Playback Switch", MAX9867_IFC1B, 3, 1, 0),
@@ -134,8 +238,12 @@ static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = {
&max9867_left_dmic_mux),
SND_SOC_DAPM_MUX("DMICR Mux", SND_SOC_NOPM, 0, 0,
&max9867_right_dmic_mux),
- SND_SOC_DAPM_ADC("ADCL", "HiFi Capture", SND_SOC_NOPM, 0, 0),
- SND_SOC_DAPM_ADC("ADCR", "HiFi Capture", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_ADC_E("ADCL", "HiFi Capture", SND_SOC_NOPM, 0, 0,
+ max9867_adc_dac_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_ADC_E("ADCR", "HiFi Capture", SND_SOC_NOPM, 0, 0,
+ max9867_adc_dac_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_MIXER("Digital", SND_SOC_NOPM, 0, 0,
max9867_sidetone_mixer_controls,
@@ -143,8 +251,12 @@ static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = {
SND_SOC_DAPM_MIXER_NAMED_CTL("Output Mixer", SND_SOC_NOPM, 0, 0,
max9867_output_mixer_controls,
ARRAY_SIZE(max9867_output_mixer_controls)),
- SND_SOC_DAPM_DAC("DACL", "HiFi Playback", SND_SOC_NOPM, 0, 0),
- SND_SOC_DAPM_DAC("DACR", "HiFi Playback", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC_E("DACL", "HiFi Playback", SND_SOC_NOPM, 0, 0,
+ max9867_adc_dac_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_DAC_E("DACR", "HiFi Playback", SND_SOC_NOPM, 0, 0,
+ max9867_adc_dac_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SWITCH("Master Playback", SND_SOC_NOPM, 0, 0,
&max9867_line_out_control),
SND_SOC_DAPM_OUTPUT("LOUT"),
@@ -197,13 +309,6 @@ static const struct snd_pcm_hw_constraint_list max9867_constraints_48k = {
.count = ARRAY_SIZE(max9867_rates_48k),
};
-struct max9867_priv {
- struct regmap *regmap;
- const struct snd_pcm_hw_constraint_list *constraints;
- unsigned int sysclk, pclk;
- bool master, dsp_a;
-};
-
static int max9867_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
@@ -220,7 +325,7 @@ static int max9867_startup(struct snd_pcm_substream *substream,
static int max9867_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
- int value;
+ int value, freq = 0;
unsigned long int rate, ratio;
struct snd_soc_component *component = dai->component;
struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
@@ -232,7 +337,7 @@ static int max9867_dai_hw_params(struct snd_pcm_substream *substream,
MAX9867_NI_HIGH_MASK, (0xFF00 & ni) >> 8);
regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
MAX9867_NI_LOW_MASK, 0x00FF & ni);
- if (max9867->master) {
+ if (max9867->provider) {
if (max9867->dsp_a) {
value = MAX9867_IFC1B_48X;
} else {
@@ -270,6 +375,35 @@ static int max9867_dai_hw_params(struct snd_pcm_substream *substream,
}
regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
MAX9867_IFC1B_BCLK_MASK, value);
+
+ /* Exact integer mode available for 8kHz and 16kHz sample rates
+ * and certain PCLK (prescaled MCLK) values.
+ */
+ if (params_rate(params) == 8000 ||
+ params_rate(params) == 16000) {
+ switch (max9867->pclk) {
+ case 12000000:
+ freq = 0x08;
+ break;
+ case 13000000:
+ freq = 0x0A;
+ break;
+ case 16000000:
+ freq = 0x0C;
+ break;
+ case 19200000:
+ freq = 0x0E;
+ break;
+ }
+ }
+ if (freq && params_rate(params) == 16000)
+ freq++;
+
+ /* If exact integer mode not available, the freq value
+ * remains zero, i.e. normal mode is used.
+ */
+ regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
+ MAX9867_FREQ_MASK, freq);
} else {
/*
* digital pll locks on to any externally supplied LRCLK signal
@@ -325,8 +459,6 @@ static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai,
freq);
max9867->sysclk = freq;
value = value << MAX9867_PSCLK_SHIFT;
- /* exact integer mode is not supported */
- value &= ~MAX9867_FREQ_MASK;
regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
MAX9867_PSCLK_MASK, value);
return 0;
@@ -339,14 +471,14 @@ static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai,
struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
u8 iface1A, iface1B;
- switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
- case SND_SOC_DAIFMT_CBM_CFM:
- max9867->master = true;
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_CBP_CFP:
+ max9867->provider = true;
iface1A = MAX9867_MASTER;
iface1B = MAX9867_IFC1B_48X;
break;
- case SND_SOC_DAIFMT_CBS_CFS:
- max9867->master = false;
+ case SND_SOC_DAIFMT_CBC_CFC:
+ max9867->provider = false;
iface1A = iface1B = 0;
break;
default:
@@ -417,7 +549,7 @@ static struct snd_soc_dai_driver max9867_dai[] = {
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.ops = &max9867_dai_ops,
- .symmetric_rates = 1,
+ .symmetric_rate = 1,
}
};
@@ -447,6 +579,11 @@ static int max9867_set_bias_level(struct snd_soc_component *component,
struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
switch (level) {
+ case SND_SOC_BIAS_ON:
+ err = clk_prepare_enable(max9867->mclk);
+ if (err)
+ return err;
+ break;
case SND_SOC_BIAS_STANDBY:
if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
err = regcache_sync(max9867->regmap);
@@ -465,6 +602,7 @@ static int max9867_set_bias_level(struct snd_soc_component *component,
return err;
regcache_mark_dirty(max9867->regmap);
+ clk_disable_unprepare(max9867->mclk);
break;
default:
break;
@@ -486,7 +624,6 @@ static const struct snd_soc_component_driver max9867_component = {
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
- .non_legacy_dai_naming = 1,
};
static bool max9867_volatile_register(struct device *dev, unsigned int reg)
@@ -510,8 +647,7 @@ static const struct regmap_config max9867_regmap = {
.cache_type = REGCACHE_RBTREE,
};
-static int max9867_i2c_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
+static int max9867_i2c_probe(struct i2c_client *i2c)
{
struct max9867_priv *max9867;
int ret, reg;
@@ -535,9 +671,16 @@ static int max9867_i2c_probe(struct i2c_client *i2c,
dev_info(&i2c->dev, "device revision: %x\n", reg);
ret = devm_snd_soc_register_component(&i2c->dev, &max9867_component,
max9867_dai, ARRAY_SIZE(max9867_dai));
- if (ret < 0)
+ if (ret < 0) {
dev_err(&i2c->dev, "Failed to register component: %d\n", ret);
- return ret;
+ return ret;
+ }
+
+ max9867->mclk = devm_clk_get(&i2c->dev, NULL);
+ if (IS_ERR(max9867->mclk))
+ return PTR_ERR(max9867->mclk);
+
+ return 0;
}
static const struct i2c_device_id max9867_i2c_id[] = {
@@ -546,18 +689,20 @@ static const struct i2c_device_id max9867_i2c_id[] = {
};
MODULE_DEVICE_TABLE(i2c, max9867_i2c_id);
+#ifdef CONFIG_OF
static const struct of_device_id max9867_of_match[] = {
{ .compatible = "maxim,max9867", },
{ }
};
MODULE_DEVICE_TABLE(of, max9867_of_match);
+#endif
static struct i2c_driver max9867_i2c_driver = {
.driver = {
.name = "max9867",
.of_match_table = of_match_ptr(max9867_of_match),
},
- .probe = max9867_i2c_probe,
+ .probe = max9867_i2c_probe,
.id_table = max9867_i2c_id,
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.