| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Lars-Peter Clausen | 3868 | 97.41% | 2 | 16.67% |
| Kuninori Morimoto | 47 | 1.18% | 1 | 8.33% |
| Bogdan Togorean | 26 | 0.65% | 1 | 8.33% |
| Mark Brown | 20 | 0.50% | 3 | 25.00% |
| Uwe Kleine-König | 3 | 0.08% | 1 | 8.33% |
| Alexandru Ardelean | 3 | 0.08% | 1 | 8.33% |
| Thomas Gleixner | 2 | 0.05% | 1 | 8.33% |
| Bhumika Goyal | 1 | 0.03% | 1 | 8.33% |
| Antonio Ospite | 1 | 0.03% | 1 | 8.33% |
| Total | 3971 | 12 |
// SPDX-License-Identifier: GPL-2.0-only /* * ADAU1977/ADAU1978/ADAU1979 driver * * Copyright 2014 Analog Devices Inc. * Author: Lars-Peter Clausen <lars@metafoo.de> */ #include <linux/delay.h> #include <linux/device.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/module.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include <sound/core.h> #include <sound/initval.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/tlv.h> #include <dt-bindings/sound/adi,adau1977.h> #include "adau1977.h" #define ADAU1977_REG_POWER 0x00 #define ADAU1977_REG_PLL 0x01 #define ADAU1977_REG_BOOST 0x02 #define ADAU1977_REG_MICBIAS 0x03 #define ADAU1977_REG_BLOCK_POWER_SAI 0x04 #define ADAU1977_REG_SAI_CTRL0 0x05 #define ADAU1977_REG_SAI_CTRL1 0x06 #define ADAU1977_REG_CMAP12 0x07 #define ADAU1977_REG_CMAP34 0x08 #define ADAU1977_REG_SAI_OVERTEMP 0x09 #define ADAU1977_REG_POST_ADC_GAIN(x) (0x0a + (x)) #define ADAU1977_REG_MISC_CONTROL 0x0e #define ADAU1977_REG_DIAG_CONTROL 0x10 #define ADAU1977_REG_STATUS(x) (0x11 + (x)) #define ADAU1977_REG_DIAG_IRQ1 0x15 #define ADAU1977_REG_DIAG_IRQ2 0x16 #define ADAU1977_REG_ADJUST1 0x17 #define ADAU1977_REG_ADJUST2 0x18 #define ADAU1977_REG_ADC_CLIP 0x19 #define ADAU1977_REG_DC_HPF_CAL 0x1a #define ADAU1977_POWER_RESET BIT(7) #define ADAU1977_POWER_PWUP BIT(0) #define ADAU1977_PLL_CLK_S BIT(4) #define ADAU1977_PLL_MCS_MASK 0x7 #define ADAU1977_MICBIAS_MB_VOLTS_MASK 0xf0 #define ADAU1977_MICBIAS_MB_VOLTS_OFFSET 4 #define ADAU1977_BLOCK_POWER_SAI_LR_POL BIT(7) #define ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE BIT(6) #define ADAU1977_BLOCK_POWER_SAI_LDO_EN BIT(5) #define ADAU1977_SAI_CTRL0_FMT_MASK (0x3 << 6) #define ADAU1977_SAI_CTRL0_FMT_I2S (0x0 << 6) #define ADAU1977_SAI_CTRL0_FMT_LJ (0x1 << 6) #define ADAU1977_SAI_CTRL0_FMT_RJ_24BIT (0x2 << 6) #define ADAU1977_SAI_CTRL0_FMT_RJ_16BIT (0x3 << 6) #define ADAU1977_SAI_CTRL0_SAI_MASK (0x7 << 3) #define ADAU1977_SAI_CTRL0_SAI_I2S (0x0 << 3) #define ADAU1977_SAI_CTRL0_SAI_TDM_2 (0x1 << 3) #define ADAU1977_SAI_CTRL0_SAI_TDM_4 (0x2 << 3) #define ADAU1977_SAI_CTRL0_SAI_TDM_8 (0x3 << 3) #define ADAU1977_SAI_CTRL0_SAI_TDM_16 (0x4 << 3) #define ADAU1977_SAI_CTRL0_FS_MASK (0x7) #define ADAU1977_SAI_CTRL0_FS_8000_12000 (0x0) #define ADAU1977_SAI_CTRL0_FS_16000_24000 (0x1) #define ADAU1977_SAI_CTRL0_FS_32000_48000 (0x2) #define ADAU1977_SAI_CTRL0_FS_64000_96000 (0x3) #define ADAU1977_SAI_CTRL0_FS_128000_192000 (0x4) #define ADAU1977_SAI_CTRL1_SLOT_WIDTH_MASK (0x3 << 5) #define ADAU1977_SAI_CTRL1_SLOT_WIDTH_32 (0x0 << 5) #define ADAU1977_SAI_CTRL1_SLOT_WIDTH_24 (0x1 << 5) #define ADAU1977_SAI_CTRL1_SLOT_WIDTH_16 (0x2 << 5) #define ADAU1977_SAI_CTRL1_DATA_WIDTH_MASK (0x1 << 4) #define ADAU1977_SAI_CTRL1_DATA_WIDTH_16BIT (0x1 << 4) #define ADAU1977_SAI_CTRL1_DATA_WIDTH_24BIT (0x0 << 4) #define ADAU1977_SAI_CTRL1_LRCLK_PULSE BIT(3) #define ADAU1977_SAI_CTRL1_MSB BIT(2) #define ADAU1977_SAI_CTRL1_BCLKRATE_16 (0x1 << 1) #define ADAU1977_SAI_CTRL1_BCLKRATE_32 (0x0 << 1) #define ADAU1977_SAI_CTRL1_BCLKRATE_MASK (0x1 << 1) #define ADAU1977_SAI_CTRL1_MASTER BIT(0) #define ADAU1977_SAI_OVERTEMP_DRV_C(x) BIT(4 + (x)) #define ADAU1977_SAI_OVERTEMP_DRV_HIZ BIT(3) #define ADAU1977_MISC_CONTROL_SUM_MODE_MASK (0x3 << 6) #define ADAU1977_MISC_CONTROL_SUM_MODE_1CH (0x2 << 6) #define ADAU1977_MISC_CONTROL_SUM_MODE_2CH (0x1 << 6) #define ADAU1977_MISC_CONTROL_SUM_MODE_4CH (0x0 << 6) #define ADAU1977_MISC_CONTROL_MMUTE BIT(4) #define ADAU1977_MISC_CONTROL_DC_CAL BIT(0) #define ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET 4 #define ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET 0 struct adau1977 { struct regmap *regmap; bool right_j; unsigned int sysclk; enum adau1977_sysclk_src sysclk_src; struct gpio_desc *reset_gpio; enum adau1977_type type; struct regulator *avdd_reg; struct regulator *dvdd_reg; struct snd_pcm_hw_constraint_list constraints; struct device *dev; void (*switch_mode)(struct device *dev); unsigned int max_clock_provider_fs; unsigned int slot_width; bool enabled; bool clock_provider; }; static const struct reg_default adau1977_reg_defaults[] = { { 0x00, 0x00 }, { 0x01, 0x41 }, { 0x02, 0x4a }, { 0x03, 0x7d }, { 0x04, 0x3d }, { 0x05, 0x02 }, { 0x06, 0x00 }, { 0x07, 0x10 }, { 0x08, 0x32 }, { 0x09, 0xf0 }, { 0x0a, 0xa0 }, { 0x0b, 0xa0 }, { 0x0c, 0xa0 }, { 0x0d, 0xa0 }, { 0x0e, 0x02 }, { 0x10, 0x0f }, { 0x15, 0x20 }, { 0x16, 0x00 }, { 0x17, 0x00 }, { 0x18, 0x00 }, { 0x1a, 0x00 }, }; static const DECLARE_TLV_DB_MINMAX_MUTE(adau1977_adc_gain, -3562, 6000); static const struct snd_soc_dapm_widget adau1977_micbias_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("MICBIAS", ADAU1977_REG_MICBIAS, 3, 0, NULL, 0) }; static const struct snd_soc_dapm_widget adau1977_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("Vref", ADAU1977_REG_BLOCK_POWER_SAI, 4, 0, NULL, 0), SND_SOC_DAPM_ADC("ADC1", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 0, 0), SND_SOC_DAPM_ADC("ADC2", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 1, 0), SND_SOC_DAPM_ADC("ADC3", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 2, 0), SND_SOC_DAPM_ADC("ADC4", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 3, 0), SND_SOC_DAPM_INPUT("AIN1"), SND_SOC_DAPM_INPUT("AIN2"), SND_SOC_DAPM_INPUT("AIN3"), SND_SOC_DAPM_INPUT("AIN4"), SND_SOC_DAPM_OUTPUT("VREF"), }; static const struct snd_soc_dapm_route adau1977_dapm_routes[] = { { "ADC1", NULL, "AIN1" }, { "ADC2", NULL, "AIN2" }, { "ADC3", NULL, "AIN3" }, { "ADC4", NULL, "AIN4" }, { "ADC1", NULL, "Vref" }, { "ADC2", NULL, "Vref" }, { "ADC3", NULL, "Vref" }, { "ADC4", NULL, "Vref" }, { "VREF", NULL, "Vref" }, }; #define ADAU1977_VOLUME(x) \ SOC_SINGLE_TLV("ADC" #x " Capture Volume", \ ADAU1977_REG_POST_ADC_GAIN((x) - 1), \ 0, 255, 1, adau1977_adc_gain) #define ADAU1977_HPF_SWITCH(x) \ SOC_SINGLE("ADC" #x " Highpass-Filter Capture Switch", \ ADAU1977_REG_DC_HPF_CAL, (x) - 1, 1, 0) #define ADAU1977_DC_SUB_SWITCH(x) \ SOC_SINGLE("ADC" #x " DC Subtraction Capture Switch", \ ADAU1977_REG_DC_HPF_CAL, (x) + 3, 1, 0) static const struct snd_kcontrol_new adau1977_snd_controls[] = { ADAU1977_VOLUME(1), ADAU1977_VOLUME(2), ADAU1977_VOLUME(3), ADAU1977_VOLUME(4), ADAU1977_HPF_SWITCH(1), ADAU1977_HPF_SWITCH(2), ADAU1977_HPF_SWITCH(3), ADAU1977_HPF_SWITCH(4), ADAU1977_DC_SUB_SWITCH(1), ADAU1977_DC_SUB_SWITCH(2), ADAU1977_DC_SUB_SWITCH(3), ADAU1977_DC_SUB_SWITCH(4), }; static int adau1977_reset(struct adau1977 *adau1977) { int ret; /* * The reset bit is obviously volatile, but we need to be able to cache * the other bits in the register, so we can't just mark the whole * register as volatile. Since this is the only place where we'll ever * touch the reset bit just bypass the cache for this operation. */ regcache_cache_bypass(adau1977->regmap, true); ret = regmap_write(adau1977->regmap, ADAU1977_REG_POWER, ADAU1977_POWER_RESET); regcache_cache_bypass(adau1977->regmap, false); return ret; } /* * Returns the appropriate setting for ths FS field in the CTRL0 register * depending on the rate. */ static int adau1977_lookup_fs(unsigned int rate) { if (rate >= 8000 && rate <= 12000) return ADAU1977_SAI_CTRL0_FS_8000_12000; else if (rate >= 16000 && rate <= 24000) return ADAU1977_SAI_CTRL0_FS_16000_24000; else if (rate >= 32000 && rate <= 48000) return ADAU1977_SAI_CTRL0_FS_32000_48000; else if (rate >= 64000 && rate <= 96000) return ADAU1977_SAI_CTRL0_FS_64000_96000; else if (rate >= 128000 && rate <= 192000) return ADAU1977_SAI_CTRL0_FS_128000_192000; else return -EINVAL; } static int adau1977_lookup_mcs(struct adau1977 *adau1977, unsigned int rate, unsigned int fs) { unsigned int mcs; /* * rate = sysclk / (512 * mcs_lut[mcs]) * 2**fs * => mcs_lut[mcs] = sysclk / (512 * rate) * 2**fs * => mcs_lut[mcs] = sysclk / ((512 / 2**fs) * rate) */ rate *= 512 >> fs; if (adau1977->sysclk % rate != 0) return -EINVAL; mcs = adau1977->sysclk / rate; /* The factors configured by MCS are 1, 2, 3, 4, 6 */ if (mcs < 1 || mcs > 6 || mcs == 5) return -EINVAL; mcs = mcs - 1; if (mcs == 5) mcs = 4; return mcs; } static int adau1977_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_component *component = dai->component; struct adau1977 *adau1977 = snd_soc_component_get_drvdata(component); unsigned int rate = params_rate(params); unsigned int slot_width; unsigned int ctrl0, ctrl0_mask; unsigned int ctrl1; int mcs, fs; int ret; fs = adau1977_lookup_fs(rate); if (fs < 0) return fs; if (adau1977->sysclk_src == ADAU1977_SYSCLK_SRC_MCLK) { mcs = adau1977_lookup_mcs(adau1977, rate, fs); if (mcs < 0) return mcs; } else { mcs = 0; } ctrl0_mask = ADAU1977_SAI_CTRL0_FS_MASK; ctrl0 = fs; if (adau1977->right_j) { switch (params_width(params)) { case 16: ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_16BIT; break; case 24: ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_24BIT; break; default: return -EINVAL; } ctrl0_mask |= ADAU1977_SAI_CTRL0_FMT_MASK; } if (adau1977->clock_provider) { switch (params_width(params)) { case 16: ctrl1 = ADAU1977_SAI_CTRL1_DATA_WIDTH_16BIT; slot_width = 16; break; case 24: case 32: ctrl1 = ADAU1977_SAI_CTRL1_DATA_WIDTH_24BIT; slot_width = 32; break; default: return -EINVAL; } /* In TDM mode there is a fixed slot width */ if (adau1977->slot_width) slot_width = adau1977->slot_width; if (slot_width == 16) ctrl1 |= ADAU1977_SAI_CTRL1_BCLKRATE_16; else ctrl1 |= ADAU1977_SAI_CTRL1_BCLKRATE_32; ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL1, ADAU1977_SAI_CTRL1_DATA_WIDTH_MASK | ADAU1977_SAI_CTRL1_BCLKRATE_MASK, ctrl1); if (ret < 0) return ret; } ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, ctrl0_mask, ctrl0); if (ret < 0) return ret; return regmap_update_bits(adau1977->regmap, ADAU1977_REG_PLL, ADAU1977_PLL_MCS_MASK, mcs); } static int adau1977_power_disable(struct adau1977 *adau1977) { int ret = 0; if (!adau1977->enabled) return 0; ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_POWER, ADAU1977_POWER_PWUP, 0); if (ret) return ret; regcache_mark_dirty(adau1977->regmap); gpiod_set_value_cansleep(adau1977->reset_gpio, 0); regcache_cache_only(adau1977->regmap, true); regulator_disable(adau1977->avdd_reg); if (adau1977->dvdd_reg) regulator_disable(adau1977->dvdd_reg); adau1977->enabled = false; return 0; } static int adau1977_power_enable(struct adau1977 *adau1977) { unsigned int val; int ret = 0; if (adau1977->enabled) return 0; ret = regulator_enable(adau1977->avdd_reg); if (ret) return ret; if (adau1977->dvdd_reg) { ret = regulator_enable(adau1977->dvdd_reg); if (ret) goto err_disable_avdd; } gpiod_set_value_cansleep(adau1977->reset_gpio, 1); regcache_cache_only(adau1977->regmap, false); if (adau1977->switch_mode) adau1977->switch_mode(adau1977->dev); ret = adau1977_reset(adau1977); if (ret) goto err_disable_dvdd; ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_POWER, ADAU1977_POWER_PWUP, ADAU1977_POWER_PWUP); if (ret) goto err_disable_dvdd; ret = regcache_sync(adau1977->regmap); if (ret) goto err_disable_dvdd; /* * The PLL register is not affected by the software reset. It is * possible that the value of the register was changed to the * default value while we were in cache only mode. In this case * regcache_sync will skip over it and we have to manually sync * it. */ ret = regmap_read(adau1977->regmap, ADAU1977_REG_PLL, &val); if (ret) goto err_disable_dvdd; if (val == 0x41) { regcache_cache_bypass(adau1977->regmap, true); ret = regmap_write(adau1977->regmap, ADAU1977_REG_PLL, 0x41); if (ret) goto err_disable_dvdd; regcache_cache_bypass(adau1977->regmap, false); } adau1977->enabled = true; return ret; err_disable_dvdd: if (adau1977->dvdd_reg) regulator_disable(adau1977->dvdd_reg); err_disable_avdd: regulator_disable(adau1977->avdd_reg); return ret; } static int adau1977_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { struct adau1977 *adau1977 = snd_soc_component_get_drvdata(component); int ret = 0; switch (level) { case SND_SOC_BIAS_ON: break; case SND_SOC_BIAS_PREPARE: break; case SND_SOC_BIAS_STANDBY: if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) ret = adau1977_power_enable(adau1977); break; case SND_SOC_BIAS_OFF: ret = adau1977_power_disable(adau1977); break; } return ret; } static int adau1977_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, unsigned int rx_mask, int slots, int width) { struct adau1977 *adau1977 = snd_soc_component_get_drvdata(dai->component); unsigned int ctrl0, ctrl1, drv; unsigned int slot[4]; unsigned int i; int ret; if (slots == 0) { /* 0 = No fixed slot width */ adau1977->slot_width = 0; adau1977->max_clock_provider_fs = 192000; return regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, ADAU1977_SAI_CTRL0_SAI_MASK, ADAU1977_SAI_CTRL0_SAI_I2S); } if (rx_mask == 0 || tx_mask != 0) return -EINVAL; drv = 0; for (i = 0; i < 4; i++) { slot[i] = __ffs(rx_mask); drv |= ADAU1977_SAI_OVERTEMP_DRV_C(i); rx_mask &= ~(1 << slot[i]); if (slot[i] >= slots) return -EINVAL; if (rx_mask == 0) break; } if (rx_mask != 0) return -EINVAL; switch (width) { case 16: ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_16; break; case 24: /* We can only generate 16 bit or 32 bit wide slots */ if (adau1977->clock_provider) return -EINVAL; ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_24; break; case 32: ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_32; break; default: return -EINVAL; } switch (slots) { case 2: ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_2; break; case 4: ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_4; break; case 8: ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_8; break; case 16: ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_16; break; default: return -EINVAL; } ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_OVERTEMP, ADAU1977_SAI_OVERTEMP_DRV_C(0) | ADAU1977_SAI_OVERTEMP_DRV_C(1) | ADAU1977_SAI_OVERTEMP_DRV_C(2) | ADAU1977_SAI_OVERTEMP_DRV_C(3), drv); if (ret) return ret; ret = regmap_write(adau1977->regmap, ADAU1977_REG_CMAP12, (slot[1] << ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET) | (slot[0] << ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET)); if (ret) return ret; ret = regmap_write(adau1977->regmap, ADAU1977_REG_CMAP34, (slot[3] << ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET) | (slot[2] << ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET)); if (ret) return ret; ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, ADAU1977_SAI_CTRL0_SAI_MASK, ctrl0); if (ret) return ret; ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL1, ADAU1977_SAI_CTRL1_SLOT_WIDTH_MASK, ctrl1); if (ret) return ret; adau1977->slot_width = width; /* In clock provider mode the maximum bitclock is 24.576 MHz */ adau1977->max_clock_provider_fs = min(192000, 24576000 / width / slots); return 0; } static int adau1977_mute(struct snd_soc_dai *dai, int mute, int stream) { struct adau1977 *adau1977 = snd_soc_component_get_drvdata(dai->component); unsigned int val; if (mute) val = ADAU1977_MISC_CONTROL_MMUTE; else val = 0; return regmap_update_bits(adau1977->regmap, ADAU1977_REG_MISC_CONTROL, ADAU1977_MISC_CONTROL_MMUTE, val); } static int adau1977_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct adau1977 *adau1977 = snd_soc_component_get_drvdata(dai->component); unsigned int ctrl0 = 0, ctrl1 = 0, block_power = 0; bool invert_lrclk; int ret; switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { case SND_SOC_DAIFMT_CBC_CFC: adau1977->clock_provider = false; break; case SND_SOC_DAIFMT_CBP_CFP: ctrl1 |= ADAU1977_SAI_CTRL1_MASTER; adau1977->clock_provider = true; break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: invert_lrclk = false; break; case SND_SOC_DAIFMT_IB_NF: block_power |= ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE; invert_lrclk = false; break; case SND_SOC_DAIFMT_NB_IF: invert_lrclk = true; break; case SND_SOC_DAIFMT_IB_IF: block_power |= ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE; invert_lrclk = true; break; default: return -EINVAL; } adau1977->right_j = false; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: ctrl0 |= ADAU1977_SAI_CTRL0_FMT_I2S; break; case SND_SOC_DAIFMT_LEFT_J: ctrl0 |= ADAU1977_SAI_CTRL0_FMT_LJ; invert_lrclk = !invert_lrclk; break; case SND_SOC_DAIFMT_RIGHT_J: ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_24BIT; adau1977->right_j = true; invert_lrclk = !invert_lrclk; break; case SND_SOC_DAIFMT_DSP_A: ctrl1 |= ADAU1977_SAI_CTRL1_LRCLK_PULSE; ctrl0 |= ADAU1977_SAI_CTRL0_FMT_I2S; invert_lrclk = false; break; case SND_SOC_DAIFMT_DSP_B: ctrl1 |= ADAU1977_SAI_CTRL1_LRCLK_PULSE; ctrl0 |= ADAU1977_SAI_CTRL0_FMT_LJ; invert_lrclk = false; break; default: return -EINVAL; } if (invert_lrclk) block_power |= ADAU1977_BLOCK_POWER_SAI_LR_POL; ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_BLOCK_POWER_SAI, ADAU1977_BLOCK_POWER_SAI_LR_POL | ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE, block_power); if (ret) return ret; ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, ADAU1977_SAI_CTRL0_FMT_MASK, ctrl0); if (ret) return ret; return regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL1, ADAU1977_SAI_CTRL1_MASTER | ADAU1977_SAI_CTRL1_LRCLK_PULSE, ctrl1); } static int adau1977_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct adau1977 *adau1977 = snd_soc_component_get_drvdata(dai->component); u64 formats = 0; if (adau1977->slot_width == 16) formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE; else if (adau1977->right_j || adau1977->slot_width == 24) formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE; snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &adau1977->constraints); if (adau1977->clock_provider) snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_RATE, 8000, adau1977->max_clock_provider_fs); if (formats != 0) snd_pcm_hw_constraint_mask64(substream->runtime, SNDRV_PCM_HW_PARAM_FORMAT, formats); return 0; } static int adau1977_set_tristate(struct snd_soc_dai *dai, int tristate) { struct adau1977 *adau1977 = snd_soc_component_get_drvdata(dai->component); unsigned int val; if (tristate) val = ADAU1977_SAI_OVERTEMP_DRV_HIZ; else val = 0; return regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_OVERTEMP, ADAU1977_SAI_OVERTEMP_DRV_HIZ, val); } static const struct snd_soc_dai_ops adau1977_dai_ops = { .startup = adau1977_startup, .hw_params = adau1977_hw_params, .mute_stream = adau1977_mute, .set_fmt = adau1977_set_dai_fmt, .set_tdm_slot = adau1977_set_tdm_slot, .set_tristate = adau1977_set_tristate, }; static struct snd_soc_dai_driver adau1977_dai = { .name = "adau1977-hifi", .capture = { .stream_name = "Capture", .channels_min = 1, .channels_max = 4, .rates = SNDRV_PCM_RATE_KNOT, .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE, .sig_bits = 24, }, .ops = &adau1977_dai_ops, }; static const unsigned int adau1977_rates[] = { 8000, 16000, 32000, 64000, 128000, 11025, 22050, 44100, 88200, 172400, 12000, 24000, 48000, 96000, 192000, }; #define ADAU1977_RATE_CONSTRAINT_MASK_32000 0x001f #define ADAU1977_RATE_CONSTRAINT_MASK_44100 0x03e0 #define ADAU1977_RATE_CONSTRAINT_MASK_48000 0x7c00 /* All rates >= 32000 */ #define ADAU1977_RATE_CONSTRAINT_MASK_LRCLK 0x739c static bool adau1977_check_sysclk(unsigned int mclk, unsigned int base_freq) { unsigned int mcs; if (mclk % (base_freq * 128) != 0) return false; mcs = mclk / (128 * base_freq); if (mcs < 1 || mcs > 6 || mcs == 5) return false; return true; } static int adau1977_set_sysclk(struct snd_soc_component *component, int clk_id, int source, unsigned int freq, int dir) { struct adau1977 *adau1977 = snd_soc_component_get_drvdata(component); unsigned int mask = 0; unsigned int clk_src; unsigned int ret; if (dir != SND_SOC_CLOCK_IN) return -EINVAL; if (clk_id != ADAU1977_SYSCLK) return -EINVAL; switch (source) { case ADAU1977_SYSCLK_SRC_MCLK: clk_src = 0; break; case ADAU1977_SYSCLK_SRC_LRCLK: clk_src = ADAU1977_PLL_CLK_S; break; default: return -EINVAL; } if (freq != 0 && source == ADAU1977_SYSCLK_SRC_MCLK) { if (freq < 4000000 || freq > 36864000) return -EINVAL; if (adau1977_check_sysclk(freq, 32000)) mask |= ADAU1977_RATE_CONSTRAINT_MASK_32000; if (adau1977_check_sysclk(freq, 44100)) mask |= ADAU1977_RATE_CONSTRAINT_MASK_44100; if (adau1977_check_sysclk(freq, 48000)) mask |= ADAU1977_RATE_CONSTRAINT_MASK_48000; if (mask == 0) return -EINVAL; } else if (source == ADAU1977_SYSCLK_SRC_LRCLK) { mask = ADAU1977_RATE_CONSTRAINT_MASK_LRCLK; } ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_PLL, ADAU1977_PLL_CLK_S, clk_src); if (ret) return ret; adau1977->constraints.mask = mask; adau1977->sysclk_src = source; adau1977->sysclk = freq; return 0; } static int adau1977_component_probe(struct snd_soc_component *component) { struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); struct adau1977 *adau1977 = snd_soc_component_get_drvdata(component); int ret; switch (adau1977->type) { case ADAU1977: ret = snd_soc_dapm_new_controls(dapm, adau1977_micbias_dapm_widgets, ARRAY_SIZE(adau1977_micbias_dapm_widgets)); if (ret < 0) return ret; break; default: break; } return 0; } static const struct snd_soc_component_driver adau1977_component_driver = { .probe = adau1977_component_probe, .set_bias_level = adau1977_set_bias_level, .set_sysclk = adau1977_set_sysclk, .controls = adau1977_snd_controls, .num_controls = ARRAY_SIZE(adau1977_snd_controls), .dapm_widgets = adau1977_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(adau1977_dapm_widgets), .dapm_routes = adau1977_dapm_routes, .num_dapm_routes = ARRAY_SIZE(adau1977_dapm_routes), .use_pmdown_time = 1, .endianness = 1, }; static int adau1977_setup_micbias(struct adau1977 *adau1977) { unsigned int micbias; if (device_property_read_u32(adau1977->dev, "adi,micbias", &micbias)) micbias = ADAU1977_MICBIAS_8V5; if (micbias > ADAU1977_MICBIAS_9V0) { dev_err(adau1977->dev, "Invalid value for 'adi,micbias'\n"); return -EINVAL; } return regmap_update_bits(adau1977->regmap, ADAU1977_REG_MICBIAS, ADAU1977_MICBIAS_MB_VOLTS_MASK, micbias << ADAU1977_MICBIAS_MB_VOLTS_OFFSET); } int adau1977_probe(struct device *dev, struct regmap *regmap, enum adau1977_type type, void (*switch_mode)(struct device *dev)) { unsigned int power_off_mask; struct adau1977 *adau1977; int ret; if (IS_ERR(regmap)) return PTR_ERR(regmap); adau1977 = devm_kzalloc(dev, sizeof(*adau1977), GFP_KERNEL); if (adau1977 == NULL) return -ENOMEM; adau1977->dev = dev; adau1977->type = type; adau1977->regmap = regmap; adau1977->switch_mode = switch_mode; adau1977->max_clock_provider_fs = 192000; adau1977->constraints.list = adau1977_rates; adau1977->constraints.count = ARRAY_SIZE(adau1977_rates); adau1977->avdd_reg = devm_regulator_get(dev, "AVDD"); if (IS_ERR(adau1977->avdd_reg)) return PTR_ERR(adau1977->avdd_reg); adau1977->dvdd_reg = devm_regulator_get_optional(dev, "DVDD"); if (IS_ERR(adau1977->dvdd_reg)) { if (PTR_ERR(adau1977->dvdd_reg) != -ENODEV) return PTR_ERR(adau1977->dvdd_reg); adau1977->dvdd_reg = NULL; } adau1977->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(adau1977->reset_gpio)) return PTR_ERR(adau1977->reset_gpio); dev_set_drvdata(dev, adau1977); if (adau1977->reset_gpio) ndelay(100); ret = adau1977_power_enable(adau1977); if (ret) return ret; if (type == ADAU1977) { ret = adau1977_setup_micbias(adau1977); if (ret) goto err_poweroff; } if (adau1977->dvdd_reg) power_off_mask = ~0; else power_off_mask = (unsigned int)~ADAU1977_BLOCK_POWER_SAI_LDO_EN; ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_BLOCK_POWER_SAI, power_off_mask, 0x00); if (ret) goto err_poweroff; ret = adau1977_power_disable(adau1977); if (ret) return ret; return devm_snd_soc_register_component(dev, &adau1977_component_driver, &adau1977_dai, 1); err_poweroff: adau1977_power_disable(adau1977); return ret; } EXPORT_SYMBOL_GPL(adau1977_probe); static bool adau1977_register_volatile(struct device *dev, unsigned int reg) { switch (reg) { case ADAU1977_REG_STATUS(0): case ADAU1977_REG_STATUS(1): case ADAU1977_REG_STATUS(2): case ADAU1977_REG_STATUS(3): case ADAU1977_REG_ADC_CLIP: return true; } return false; } const struct regmap_config adau1977_regmap_config = { .max_register = ADAU1977_REG_DC_HPF_CAL, .volatile_reg = adau1977_register_volatile, .cache_type = REGCACHE_MAPLE, .reg_defaults = adau1977_reg_defaults, .num_reg_defaults = ARRAY_SIZE(adau1977_reg_defaults), }; EXPORT_SYMBOL_GPL(adau1977_regmap_config); MODULE_DESCRIPTION("ASoC ADAU1977/ADAU1978/ADAU1979 driver"); MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); MODULE_LICENSE("GPL");
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