diff options
Diffstat (limited to 'sound/soc/codecs/nau8540.c')
| -rw-r--r-- | sound/soc/codecs/nau8540.c | 211 |
1 files changed, 160 insertions, 51 deletions
diff --git a/sound/soc/codecs/nau8540.c b/sound/soc/codecs/nau8540.c index ace96995fedc..22251fb2fa1f 100644 --- a/sound/soc/codecs/nau8540.c +++ b/sound/soc/codecs/nau8540.c @@ -16,7 +16,7 @@ #include <linux/regulator/consumer.h> #include <linux/spi/spi.h> #include <linux/slab.h> -#include <linux/of_device.h> +#include <linux/of.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -26,7 +26,6 @@ #include <sound/tlv.h> #include "nau8540.h" - #define NAU_FREF_MAX 13500000 #define NAU_FVCO_MAX 100000000 #define NAU_FVCO_MIN 90000000 @@ -230,6 +229,49 @@ static SOC_ENUM_SINGLE_DECL( static const struct snd_kcontrol_new digital_ch1_mux = SOC_DAPM_ENUM("Digital CH1 Select", digital_ch1_enum); +static int nau8540_fepga_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + struct nau8540 *nau8540 = snd_soc_component_get_drvdata(component); + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + regmap_update_bits(nau8540->regmap, NAU8540_REG_FEPGA2, + NAU8540_ACDC_CTL_MASK, NAU8540_ACDC_CTL_MIC1P_VREF | + NAU8540_ACDC_CTL_MIC1N_VREF | NAU8540_ACDC_CTL_MIC2P_VREF | + NAU8540_ACDC_CTL_MIC2N_VREF | NAU8540_ACDC_CTL_MIC3P_VREF | + NAU8540_ACDC_CTL_MIC3N_VREF | NAU8540_ACDC_CTL_MIC4P_VREF | + NAU8540_ACDC_CTL_MIC4N_VREF); + break; + default: + break; + } + return 0; +} + +static int nau8540_precharge_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + struct nau8540 *nau8540 = snd_soc_component_get_drvdata(component); + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + regmap_update_bits(nau8540->regmap, NAU8540_REG_REFERENCE, + NAU8540_DISCHRG_EN, NAU8540_DISCHRG_EN); + msleep(40); + regmap_update_bits(nau8540->regmap, NAU8540_REG_REFERENCE, + NAU8540_DISCHRG_EN, 0); + regmap_update_bits(nau8540->regmap, NAU8540_REG_FEPGA2, + NAU8540_ACDC_CTL_MASK, 0); + break; + default: + break; + } + return 0; +} + static int adc_power_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { @@ -237,8 +279,10 @@ static int adc_power_control(struct snd_soc_dapm_widget *w, struct nau8540 *nau8540 = snd_soc_component_get_drvdata(component); if (SND_SOC_DAPM_EVENT_ON(event)) { - msleep(300); + msleep(160); /* DO12 and DO34 pad output enable */ + regmap_update_bits(nau8540->regmap, NAU8540_REG_POWER_MANAGEMENT, + NAU8540_ADC_ALL_EN, NAU8540_ADC_ALL_EN); regmap_update_bits(nau8540->regmap, NAU8540_REG_PCM_CTRL1, NAU8540_I2S_DO12_TRI, 0); regmap_update_bits(nau8540->regmap, NAU8540_REG_PCM_CTRL2, @@ -248,6 +292,8 @@ static int adc_power_control(struct snd_soc_dapm_widget *w, NAU8540_I2S_DO12_TRI, NAU8540_I2S_DO12_TRI); regmap_update_bits(nau8540->regmap, NAU8540_REG_PCM_CTRL2, NAU8540_I2S_DO34_TRI, NAU8540_I2S_DO34_TRI); + regmap_update_bits(nau8540->regmap, NAU8540_REG_POWER_MANAGEMENT, + NAU8540_ADC_ALL_EN, 0); } return 0; } @@ -274,28 +320,26 @@ static const struct snd_soc_dapm_widget nau8540_dapm_widgets[] = { SND_SOC_DAPM_INPUT("MIC3"), SND_SOC_DAPM_INPUT("MIC4"), - SND_SOC_DAPM_PGA("Frontend PGA1", NAU8540_REG_PWR, 12, 0, NULL, 0), - SND_SOC_DAPM_PGA("Frontend PGA2", NAU8540_REG_PWR, 13, 0, NULL, 0), - SND_SOC_DAPM_PGA("Frontend PGA3", NAU8540_REG_PWR, 14, 0, NULL, 0), - SND_SOC_DAPM_PGA("Frontend PGA4", NAU8540_REG_PWR, 15, 0, NULL, 0), - - SND_SOC_DAPM_ADC_E("ADC1", NULL, - NAU8540_REG_POWER_MANAGEMENT, 0, 0, adc_power_control, - SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), - SND_SOC_DAPM_ADC_E("ADC2", NULL, - NAU8540_REG_POWER_MANAGEMENT, 1, 0, adc_power_control, - SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), - SND_SOC_DAPM_ADC_E("ADC3", NULL, - NAU8540_REG_POWER_MANAGEMENT, 2, 0, adc_power_control, - SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), - SND_SOC_DAPM_ADC_E("ADC4", NULL, - NAU8540_REG_POWER_MANAGEMENT, 3, 0, adc_power_control, - SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), - - SND_SOC_DAPM_PGA("ADC CH1", NAU8540_REG_ANALOG_PWR, 0, 0, NULL, 0), - SND_SOC_DAPM_PGA("ADC CH2", NAU8540_REG_ANALOG_PWR, 1, 0, NULL, 0), - SND_SOC_DAPM_PGA("ADC CH3", NAU8540_REG_ANALOG_PWR, 2, 0, NULL, 0), - SND_SOC_DAPM_PGA("ADC CH4", NAU8540_REG_ANALOG_PWR, 3, 0, NULL, 0), + SND_SOC_DAPM_PGA_S("Frontend PGA1", 0, NAU8540_REG_PWR, 12, 0, + nau8540_fepga_event, SND_SOC_DAPM_POST_PMU), + SND_SOC_DAPM_PGA_S("Frontend PGA2", 0, NAU8540_REG_PWR, 13, 0, + nau8540_fepga_event, SND_SOC_DAPM_POST_PMU), + SND_SOC_DAPM_PGA_S("Frontend PGA3", 0, NAU8540_REG_PWR, 14, 0, + nau8540_fepga_event, SND_SOC_DAPM_POST_PMU), + SND_SOC_DAPM_PGA_S("Frontend PGA4", 0, NAU8540_REG_PWR, 15, 0, + nau8540_fepga_event, SND_SOC_DAPM_POST_PMU), + + SND_SOC_DAPM_PGA_S("Precharge", 1, SND_SOC_NOPM, 0, 0, + nau8540_precharge_event, SND_SOC_DAPM_POST_PMU), + + SND_SOC_DAPM_PGA_S("ADC CH1", 2, NAU8540_REG_ANALOG_PWR, 0, 0, + adc_power_control, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_PGA_S("ADC CH2", 2, NAU8540_REG_ANALOG_PWR, 1, 0, + adc_power_control, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_PGA_S("ADC CH3", 2, NAU8540_REG_ANALOG_PWR, 2, 0, + adc_power_control, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_PGA_S("ADC CH4", 2, NAU8540_REG_ANALOG_PWR, 3, 0, + adc_power_control, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), SND_SOC_DAPM_MUX("Digital CH4 Mux", SND_SOC_NOPM, 0, 0, &digital_ch4_mux), @@ -316,20 +360,20 @@ static const struct snd_soc_dapm_route nau8540_dapm_routes[] = { {"Frontend PGA3", NULL, "MIC3"}, {"Frontend PGA4", NULL, "MIC4"}, - {"ADC1", NULL, "Frontend PGA1"}, - {"ADC2", NULL, "Frontend PGA2"}, - {"ADC3", NULL, "Frontend PGA3"}, - {"ADC4", NULL, "Frontend PGA4"}, + {"Precharge", NULL, "Frontend PGA1"}, + {"Precharge", NULL, "Frontend PGA2"}, + {"Precharge", NULL, "Frontend PGA3"}, + {"Precharge", NULL, "Frontend PGA4"}, - {"ADC CH1", NULL, "ADC1"}, - {"ADC CH2", NULL, "ADC2"}, - {"ADC CH3", NULL, "ADC3"}, - {"ADC CH4", NULL, "ADC4"}, + {"ADC CH1", NULL, "Precharge"}, + {"ADC CH2", NULL, "Precharge"}, + {"ADC CH3", NULL, "Precharge"}, + {"ADC CH4", NULL, "Precharge"}, - {"ADC1", NULL, "MICBIAS1"}, - {"ADC2", NULL, "MICBIAS1"}, - {"ADC3", NULL, "MICBIAS2"}, - {"ADC4", NULL, "MICBIAS2"}, + {"ADC CH1", NULL, "MICBIAS1"}, + {"ADC CH2", NULL, "MICBIAS1"}, + {"ADC CH3", NULL, "MICBIAS2"}, + {"ADC CH4", NULL, "MICBIAS2"}, {"Digital CH1 Mux", "ADC channel 1", "ADC CH1"}, {"Digital CH1 Mux", "ADC channel 2", "ADC CH2"}, @@ -357,17 +401,32 @@ static const struct snd_soc_dapm_route nau8540_dapm_routes[] = { {"AIFTX", NULL, "Digital CH4 Mux"}, }; -static int nau8540_clock_check(struct nau8540 *nau8540, int rate, int osr) +static const struct nau8540_osr_attr * +nau8540_get_osr(struct nau8540 *nau8540) { + unsigned int osr; + + regmap_read(nau8540->regmap, NAU8540_REG_ADC_SAMPLE_RATE, &osr); + osr &= NAU8540_ADC_OSR_MASK; if (osr >= ARRAY_SIZE(osr_adc_sel)) - return -EINVAL; + return NULL; + return &osr_adc_sel[osr]; +} - if (rate * osr > CLK_ADC_MAX) { - dev_err(nau8540->dev, "exceed the maximum frequency of CLK_ADC\n"); +static int nau8540_dai_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct nau8540 *nau8540 = snd_soc_component_get_drvdata(component); + const struct nau8540_osr_attr *osr; + + osr = nau8540_get_osr(nau8540); + if (!osr || !osr->osr) return -EINVAL; - } - return 0; + return snd_pcm_hw_constraint_minmax(substream->runtime, + SNDRV_PCM_HW_PARAM_RATE, + 0, CLK_ADC_MAX / osr->osr); } static int nau8540_hw_params(struct snd_pcm_substream *substream, @@ -375,7 +434,8 @@ static int nau8540_hw_params(struct snd_pcm_substream *substream, { struct snd_soc_component *component = dai->component; struct nau8540 *nau8540 = snd_soc_component_get_drvdata(component); - unsigned int val_len = 0, osr; + unsigned int val_len = 0; + const struct nau8540_osr_attr *osr; /* CLK_ADC = OSR * FS * ADC clock frequency is defined as Over Sampling Rate (OSR) @@ -383,13 +443,14 @@ static int nau8540_hw_params(struct snd_pcm_substream *substream, * values must be selected such that the maximum frequency is less * than 6.144 MHz. */ - regmap_read(nau8540->regmap, NAU8540_REG_ADC_SAMPLE_RATE, &osr); - osr &= NAU8540_ADC_OSR_MASK; - if (nau8540_clock_check(nau8540, params_rate(params), osr)) + osr = nau8540_get_osr(nau8540); + if (!osr || !osr->osr) + return -EINVAL; + if (params_rate(params) * osr->osr > CLK_ADC_MAX) return -EINVAL; regmap_update_bits(nau8540->regmap, NAU8540_REG_CLOCK_SRC, NAU8540_CLK_ADC_SRC_MASK, - osr_adc_sel[osr].clk_src << NAU8540_CLK_ADC_SRC_SFT); + osr->clk_src << NAU8540_CLK_ADC_SRC_SFT); switch (params_width(params)) { case 16: @@ -513,11 +574,61 @@ static int nau8540_set_tdm_slot(struct snd_soc_dai *dai, return 0; } +static int nau8540_dai_trigger(struct snd_pcm_substream *substream, + int cmd, struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct nau8540 *nau8540 = snd_soc_component_get_drvdata(component); + struct regmap *regmap = nau8540->regmap; + unsigned int val; + int ret = 0; + + /* Reading the peak data to detect abnormal data in the ADC channel. + * If abnormal data happens, the driver takes recovery actions to + * refresh the ADC channel. + */ + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + regmap_update_bits(regmap, NAU8540_REG_CLOCK_CTRL, + NAU8540_CLK_AGC_EN, NAU8540_CLK_AGC_EN); + regmap_update_bits(regmap, NAU8540_REG_ALC_CONTROL_3, + NAU8540_ALC_CH_ALL_EN, NAU8540_ALC_CH_ALL_EN); + + regmap_read(regmap, NAU8540_REG_PEAK_CH1, &val); + dev_dbg(nau8540->dev, "1.ADC CH1 peak data %x", val); + if (!val) { + regmap_update_bits(regmap, NAU8540_REG_MUTE, + NAU8540_PGA_CH_ALL_MUTE, NAU8540_PGA_CH_ALL_MUTE); + regmap_update_bits(regmap, NAU8540_REG_MUTE, + NAU8540_PGA_CH_ALL_MUTE, 0); + regmap_write(regmap, NAU8540_REG_RST, 0x1); + regmap_write(regmap, NAU8540_REG_RST, 0); + regmap_read(regmap, NAU8540_REG_PEAK_CH1, &val); + dev_dbg(nau8540->dev, "2.ADC CH1 peak data %x", val); + if (!val) { + dev_err(nau8540->dev, "Channel recovery failed!!"); + ret = -EIO; + } + } + regmap_update_bits(regmap, NAU8540_REG_CLOCK_CTRL, + NAU8540_CLK_AGC_EN, 0); + regmap_update_bits(regmap, NAU8540_REG_ALC_CONTROL_3, + NAU8540_ALC_CH_ALL_EN, 0); + break; + + default: + break; + } + + return ret; +} static const struct snd_soc_dai_ops nau8540_dai_ops = { + .startup = nau8540_dai_startup, .hw_params = nau8540_hw_params, .set_fmt = nau8540_set_fmt, .set_tdm_slot = nau8540_set_tdm_slot, + .trigger = nau8540_dai_trigger, }; #define NAU8540_RATES SNDRV_PCM_RATE_8000_48000 @@ -806,7 +917,6 @@ static const struct snd_soc_component_driver nau8540_component_driver = { .idle_bias_on = 1, .use_pmdown_time = 1, .endianness = 1, - .non_legacy_dai_naming = 1, }; static const struct regmap_config nau8540_regmap_config = { @@ -823,8 +933,7 @@ static const struct regmap_config nau8540_regmap_config = { .num_reg_defaults = ARRAY_SIZE(nau8540_reg_defaults), }; -static int nau8540_i2c_probe(struct i2c_client *i2c, - const struct i2c_device_id *id) +static int nau8540_i2c_probe(struct i2c_client *i2c) { struct device *dev = &i2c->dev; struct nau8540 *nau8540 = dev_get_platdata(dev); |