| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Lars-Peter Clausen | 3356 | 96.60% | 2 | 15.38% |
| Kuninori Morimoto | 46 | 1.32% | 2 | 15.38% |
| Ricard Wanderlöf | 32 | 0.92% | 1 | 7.69% |
| Dmitry Torokhov | 26 | 0.75% | 1 | 7.69% |
| Mark Brown | 5 | 0.14% | 2 | 15.38% |
| Takashi Iwai | 4 | 0.12% | 1 | 7.69% |
| Thomas Gleixner | 2 | 0.06% | 1 | 7.69% |
| Axel Lin | 1 | 0.03% | 1 | 7.69% |
| Uwe Kleine-König | 1 | 0.03% | 1 | 7.69% |
| Bhumika Goyal | 1 | 0.03% | 1 | 7.69% |
| Total | 3474 | 13 |
// SPDX-License-Identifier: GPL-2.0-only /* * SSM2518 amplifier audio driver * * Copyright 2013 Analog Devices Inc. * Author: Lars-Peter Clausen <lars@metafoo.de> */ #include <linux/err.h> #include <linux/module.h> #include <linux/init.h> #include <linux/i2c.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/gpio/consumer.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/initval.h> #include <sound/tlv.h> #include "ssm2518.h" #define SSM2518_REG_POWER1 0x00 #define SSM2518_REG_CLOCK 0x01 #define SSM2518_REG_SAI_CTRL1 0x02 #define SSM2518_REG_SAI_CTRL2 0x03 #define SSM2518_REG_CHAN_MAP 0x04 #define SSM2518_REG_LEFT_VOL 0x05 #define SSM2518_REG_RIGHT_VOL 0x06 #define SSM2518_REG_MUTE_CTRL 0x07 #define SSM2518_REG_FAULT_CTRL 0x08 #define SSM2518_REG_POWER2 0x09 #define SSM2518_REG_DRC_1 0x0a #define SSM2518_REG_DRC_2 0x0b #define SSM2518_REG_DRC_3 0x0c #define SSM2518_REG_DRC_4 0x0d #define SSM2518_REG_DRC_5 0x0e #define SSM2518_REG_DRC_6 0x0f #define SSM2518_REG_DRC_7 0x10 #define SSM2518_REG_DRC_8 0x11 #define SSM2518_REG_DRC_9 0x12 #define SSM2518_POWER1_RESET BIT(7) #define SSM2518_POWER1_NO_BCLK BIT(5) #define SSM2518_POWER1_MCS_MASK (0xf << 1) #define SSM2518_POWER1_MCS_64FS (0x0 << 1) #define SSM2518_POWER1_MCS_128FS (0x1 << 1) #define SSM2518_POWER1_MCS_256FS (0x2 << 1) #define SSM2518_POWER1_MCS_384FS (0x3 << 1) #define SSM2518_POWER1_MCS_512FS (0x4 << 1) #define SSM2518_POWER1_MCS_768FS (0x5 << 1) #define SSM2518_POWER1_MCS_100FS (0x6 << 1) #define SSM2518_POWER1_MCS_200FS (0x7 << 1) #define SSM2518_POWER1_MCS_400FS (0x8 << 1) #define SSM2518_POWER1_SPWDN BIT(0) #define SSM2518_CLOCK_ASR BIT(0) #define SSM2518_SAI_CTRL1_FMT_MASK (0x3 << 5) #define SSM2518_SAI_CTRL1_FMT_I2S (0x0 << 5) #define SSM2518_SAI_CTRL1_FMT_LJ (0x1 << 5) #define SSM2518_SAI_CTRL1_FMT_RJ_24BIT (0x2 << 5) #define SSM2518_SAI_CTRL1_FMT_RJ_16BIT (0x3 << 5) #define SSM2518_SAI_CTRL1_SAI_MASK (0x7 << 2) #define SSM2518_SAI_CTRL1_SAI_I2S (0x0 << 2) #define SSM2518_SAI_CTRL1_SAI_TDM_2 (0x1 << 2) #define SSM2518_SAI_CTRL1_SAI_TDM_4 (0x2 << 2) #define SSM2518_SAI_CTRL1_SAI_TDM_8 (0x3 << 2) #define SSM2518_SAI_CTRL1_SAI_TDM_16 (0x4 << 2) #define SSM2518_SAI_CTRL1_SAI_MONO (0x5 << 2) #define SSM2518_SAI_CTRL1_FS_MASK (0x3) #define SSM2518_SAI_CTRL1_FS_8000_12000 (0x0) #define SSM2518_SAI_CTRL1_FS_16000_24000 (0x1) #define SSM2518_SAI_CTRL1_FS_32000_48000 (0x2) #define SSM2518_SAI_CTRL1_FS_64000_96000 (0x3) #define SSM2518_SAI_CTRL2_BCLK_INTERAL BIT(7) #define SSM2518_SAI_CTRL2_LRCLK_PULSE BIT(6) #define SSM2518_SAI_CTRL2_LRCLK_INVERT BIT(5) #define SSM2518_SAI_CTRL2_MSB BIT(4) #define SSM2518_SAI_CTRL2_SLOT_WIDTH_MASK (0x3 << 2) #define SSM2518_SAI_CTRL2_SLOT_WIDTH_32 (0x0 << 2) #define SSM2518_SAI_CTRL2_SLOT_WIDTH_24 (0x1 << 2) #define SSM2518_SAI_CTRL2_SLOT_WIDTH_16 (0x2 << 2) #define SSM2518_SAI_CTRL2_BCLK_INVERT BIT(1) #define SSM2518_CHAN_MAP_RIGHT_SLOT_OFFSET 4 #define SSM2518_CHAN_MAP_RIGHT_SLOT_MASK 0xf0 #define SSM2518_CHAN_MAP_LEFT_SLOT_OFFSET 0 #define SSM2518_CHAN_MAP_LEFT_SLOT_MASK 0x0f #define SSM2518_MUTE_CTRL_ANA_GAIN BIT(5) #define SSM2518_MUTE_CTRL_MUTE_MASTER BIT(0) #define SSM2518_POWER2_APWDN BIT(0) #define SSM2518_DAC_MUTE BIT(6) #define SSM2518_DAC_FS_MASK 0x07 #define SSM2518_DAC_FS_8000 0x00 #define SSM2518_DAC_FS_16000 0x01 #define SSM2518_DAC_FS_32000 0x02 #define SSM2518_DAC_FS_64000 0x03 #define SSM2518_DAC_FS_128000 0x04 struct ssm2518 { struct regmap *regmap; bool right_j; unsigned int sysclk; const struct snd_pcm_hw_constraint_list *constraints; struct gpio_desc *enable_gpio; }; static const struct reg_default ssm2518_reg_defaults[] = { { 0x00, 0x05 }, { 0x01, 0x00 }, { 0x02, 0x02 }, { 0x03, 0x00 }, { 0x04, 0x10 }, { 0x05, 0x40 }, { 0x06, 0x40 }, { 0x07, 0x81 }, { 0x08, 0x0c }, { 0x09, 0x99 }, { 0x0a, 0x7c }, { 0x0b, 0x5b }, { 0x0c, 0x57 }, { 0x0d, 0x89 }, { 0x0e, 0x8c }, { 0x0f, 0x77 }, { 0x10, 0x26 }, { 0x11, 0x1c }, { 0x12, 0x97 }, }; static const DECLARE_TLV_DB_MINMAX_MUTE(ssm2518_vol_tlv, -7125, 2400); static const DECLARE_TLV_DB_SCALE(ssm2518_compressor_tlv, -3400, 200, 0); static const DECLARE_TLV_DB_SCALE(ssm2518_expander_tlv, -8100, 300, 0); static const DECLARE_TLV_DB_SCALE(ssm2518_noise_gate_tlv, -9600, 300, 0); static const DECLARE_TLV_DB_SCALE(ssm2518_post_drc_tlv, -2400, 300, 0); static const DECLARE_TLV_DB_RANGE(ssm2518_limiter_tlv, 0, 7, TLV_DB_SCALE_ITEM(-2200, 200, 0), 7, 15, TLV_DB_SCALE_ITEM(-800, 100, 0), ); static const char * const ssm2518_drc_peak_detector_attack_time_text[] = { "0 ms", "0.1 ms", "0.19 ms", "0.37 ms", "0.75 ms", "1.5 ms", "3 ms", "6 ms", "12 ms", "24 ms", "48 ms", "96 ms", "192 ms", "384 ms", "768 ms", "1536 ms", }; static const char * const ssm2518_drc_peak_detector_release_time_text[] = { "0 ms", "1.5 ms", "3 ms", "6 ms", "12 ms", "24 ms", "48 ms", "96 ms", "192 ms", "384 ms", "768 ms", "1536 ms", "3072 ms", "6144 ms", "12288 ms", "24576 ms" }; static const char * const ssm2518_drc_hold_time_text[] = { "0 ms", "0.67 ms", "1.33 ms", "2.67 ms", "5.33 ms", "10.66 ms", "21.32 ms", "42.64 ms", "85.28 ms", "170.56 ms", "341.12 ms", "682.24 ms", "1364 ms", }; static SOC_ENUM_SINGLE_DECL(ssm2518_drc_peak_detector_attack_time_enum, SSM2518_REG_DRC_2, 4, ssm2518_drc_peak_detector_attack_time_text); static SOC_ENUM_SINGLE_DECL(ssm2518_drc_peak_detector_release_time_enum, SSM2518_REG_DRC_2, 0, ssm2518_drc_peak_detector_release_time_text); static SOC_ENUM_SINGLE_DECL(ssm2518_drc_attack_time_enum, SSM2518_REG_DRC_6, 4, ssm2518_drc_peak_detector_attack_time_text); static SOC_ENUM_SINGLE_DECL(ssm2518_drc_decay_time_enum, SSM2518_REG_DRC_6, 0, ssm2518_drc_peak_detector_release_time_text); static SOC_ENUM_SINGLE_DECL(ssm2518_drc_hold_time_enum, SSM2518_REG_DRC_7, 4, ssm2518_drc_hold_time_text); static SOC_ENUM_SINGLE_DECL(ssm2518_drc_noise_gate_hold_time_enum, SSM2518_REG_DRC_7, 0, ssm2518_drc_hold_time_text); static SOC_ENUM_SINGLE_DECL(ssm2518_drc_rms_averaging_time_enum, SSM2518_REG_DRC_9, 0, ssm2518_drc_peak_detector_release_time_text); static const struct snd_kcontrol_new ssm2518_snd_controls[] = { SOC_SINGLE("Playback De-emphasis Switch", SSM2518_REG_MUTE_CTRL, 4, 1, 0), SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2518_REG_LEFT_VOL, SSM2518_REG_RIGHT_VOL, 0, 0xff, 1, ssm2518_vol_tlv), SOC_DOUBLE("Master Playback Switch", SSM2518_REG_MUTE_CTRL, 2, 1, 1, 1), SOC_SINGLE("Amp Low Power Mode Switch", SSM2518_REG_POWER2, 4, 1, 0), SOC_SINGLE("DAC Low Power Mode Switch", SSM2518_REG_POWER2, 3, 1, 0), SOC_SINGLE("DRC Limiter Switch", SSM2518_REG_DRC_1, 5, 1, 0), SOC_SINGLE("DRC Compressor Switch", SSM2518_REG_DRC_1, 4, 1, 0), SOC_SINGLE("DRC Expander Switch", SSM2518_REG_DRC_1, 3, 1, 0), SOC_SINGLE("DRC Noise Gate Switch", SSM2518_REG_DRC_1, 2, 1, 0), SOC_DOUBLE("DRC Switch", SSM2518_REG_DRC_1, 0, 1, 1, 0), SOC_SINGLE_TLV("DRC Limiter Threshold Volume", SSM2518_REG_DRC_3, 4, 15, 1, ssm2518_limiter_tlv), SOC_SINGLE_TLV("DRC Compressor Lower Threshold Volume", SSM2518_REG_DRC_3, 0, 15, 1, ssm2518_compressor_tlv), SOC_SINGLE_TLV("DRC Expander Upper Threshold Volume", SSM2518_REG_DRC_4, 4, 15, 1, ssm2518_expander_tlv), SOC_SINGLE_TLV("DRC Noise Gate Threshold Volume", SSM2518_REG_DRC_4, 0, 15, 1, ssm2518_noise_gate_tlv), SOC_SINGLE_TLV("DRC Upper Output Threshold Volume", SSM2518_REG_DRC_5, 4, 15, 1, ssm2518_limiter_tlv), SOC_SINGLE_TLV("DRC Lower Output Threshold Volume", SSM2518_REG_DRC_5, 0, 15, 1, ssm2518_noise_gate_tlv), SOC_SINGLE_TLV("DRC Post Volume", SSM2518_REG_DRC_8, 2, 15, 1, ssm2518_post_drc_tlv), SOC_ENUM("DRC Peak Detector Attack Time", ssm2518_drc_peak_detector_attack_time_enum), SOC_ENUM("DRC Peak Detector Release Time", ssm2518_drc_peak_detector_release_time_enum), SOC_ENUM("DRC Attack Time", ssm2518_drc_attack_time_enum), SOC_ENUM("DRC Decay Time", ssm2518_drc_decay_time_enum), SOC_ENUM("DRC Hold Time", ssm2518_drc_hold_time_enum), SOC_ENUM("DRC Noise Gate Hold Time", ssm2518_drc_noise_gate_hold_time_enum), SOC_ENUM("DRC RMS Averaging Time", ssm2518_drc_rms_averaging_time_enum), }; static const struct snd_soc_dapm_widget ssm2518_dapm_widgets[] = { SND_SOC_DAPM_DAC("DACL", "HiFi Playback", SSM2518_REG_POWER2, 1, 1), SND_SOC_DAPM_DAC("DACR", "HiFi Playback", SSM2518_REG_POWER2, 2, 1), SND_SOC_DAPM_OUTPUT("OUTL"), SND_SOC_DAPM_OUTPUT("OUTR"), }; static const struct snd_soc_dapm_route ssm2518_routes[] = { { "OUTL", NULL, "DACL" }, { "OUTR", NULL, "DACR" }, }; struct ssm2518_mcs_lut { unsigned int rate; const unsigned int *sysclks; }; static const unsigned int ssm2518_sysclks_2048000[] = { 2048000, 4096000, 8192000, 12288000, 16384000, 24576000, 3200000, 6400000, 12800000, 0 }; static const unsigned int ssm2518_sysclks_2822000[] = { 2822000, 5644800, 11289600, 16934400, 22579200, 33868800, 4410000, 8820000, 17640000, 0 }; static const unsigned int ssm2518_sysclks_3072000[] = { 3072000, 6144000, 12288000, 16384000, 24576000, 38864000, 4800000, 9600000, 19200000, 0 }; static const struct ssm2518_mcs_lut ssm2518_mcs_lut[] = { { 8000, ssm2518_sysclks_2048000, }, { 11025, ssm2518_sysclks_2822000, }, { 12000, ssm2518_sysclks_3072000, }, { 16000, ssm2518_sysclks_2048000, }, { 24000, ssm2518_sysclks_3072000, }, { 22050, ssm2518_sysclks_2822000, }, { 32000, ssm2518_sysclks_2048000, }, { 44100, ssm2518_sysclks_2822000, }, { 48000, ssm2518_sysclks_3072000, }, { 96000, ssm2518_sysclks_3072000, }, }; static const unsigned int ssm2518_rates_2048000[] = { 8000, 16000, 32000, }; static const struct snd_pcm_hw_constraint_list ssm2518_constraints_2048000 = { .list = ssm2518_rates_2048000, .count = ARRAY_SIZE(ssm2518_rates_2048000), }; static const unsigned int ssm2518_rates_2822000[] = { 11025, 22050, 44100, }; static const struct snd_pcm_hw_constraint_list ssm2518_constraints_2822000 = { .list = ssm2518_rates_2822000, .count = ARRAY_SIZE(ssm2518_rates_2822000), }; static const unsigned int ssm2518_rates_3072000[] = { 12000, 24000, 48000, 96000, }; static const struct snd_pcm_hw_constraint_list ssm2518_constraints_3072000 = { .list = ssm2518_rates_3072000, .count = ARRAY_SIZE(ssm2518_rates_3072000), }; static const unsigned int ssm2518_rates_12288000[] = { 8000, 12000, 16000, 24000, 32000, 48000, 96000, }; static const struct snd_pcm_hw_constraint_list ssm2518_constraints_12288000 = { .list = ssm2518_rates_12288000, .count = ARRAY_SIZE(ssm2518_rates_12288000), }; static int ssm2518_lookup_mcs(struct ssm2518 *ssm2518, unsigned int rate) { const unsigned int *sysclks = NULL; int i; for (i = 0; i < ARRAY_SIZE(ssm2518_mcs_lut); i++) { if (ssm2518_mcs_lut[i].rate == rate) { sysclks = ssm2518_mcs_lut[i].sysclks; break; } } if (!sysclks) return -EINVAL; for (i = 0; sysclks[i]; i++) { if (sysclks[i] == ssm2518->sysclk) return i; } return -EINVAL; } static int ssm2518_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 ssm2518 *ssm2518 = snd_soc_component_get_drvdata(component); unsigned int rate = params_rate(params); unsigned int ctrl1, ctrl1_mask; int mcs; int ret; mcs = ssm2518_lookup_mcs(ssm2518, rate); if (mcs < 0) return mcs; ctrl1_mask = SSM2518_SAI_CTRL1_FS_MASK; if (rate >= 8000 && rate <= 12000) ctrl1 = SSM2518_SAI_CTRL1_FS_8000_12000; else if (rate >= 16000 && rate <= 24000) ctrl1 = SSM2518_SAI_CTRL1_FS_16000_24000; else if (rate >= 32000 && rate <= 48000) ctrl1 = SSM2518_SAI_CTRL1_FS_32000_48000; else if (rate >= 64000 && rate <= 96000) ctrl1 = SSM2518_SAI_CTRL1_FS_64000_96000; else return -EINVAL; if (ssm2518->right_j) { switch (params_width(params)) { case 16: ctrl1 |= SSM2518_SAI_CTRL1_FMT_RJ_16BIT; break; case 24: ctrl1 |= SSM2518_SAI_CTRL1_FMT_RJ_24BIT; break; default: return -EINVAL; } ctrl1_mask |= SSM2518_SAI_CTRL1_FMT_MASK; } /* Disable auto samplerate detection */ ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_CLOCK, SSM2518_CLOCK_ASR, SSM2518_CLOCK_ASR); if (ret < 0) return ret; ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_SAI_CTRL1, ctrl1_mask, ctrl1); if (ret < 0) return ret; return regmap_update_bits(ssm2518->regmap, SSM2518_REG_POWER1, SSM2518_POWER1_MCS_MASK, mcs << 1); } static int ssm2518_mute(struct snd_soc_dai *dai, int mute, int direction) { struct ssm2518 *ssm2518 = snd_soc_component_get_drvdata(dai->component); unsigned int val; if (mute) val = SSM2518_MUTE_CTRL_MUTE_MASTER; else val = 0; return regmap_update_bits(ssm2518->regmap, SSM2518_REG_MUTE_CTRL, SSM2518_MUTE_CTRL_MUTE_MASTER, val); } static int ssm2518_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct ssm2518 *ssm2518 = snd_soc_component_get_drvdata(dai->component); unsigned int ctrl1 = 0, ctrl2 = 0; bool invert_fclk; int ret; switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { case SND_SOC_DAIFMT_CBC_CFC: break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: invert_fclk = false; break; case SND_SOC_DAIFMT_IB_NF: ctrl2 |= SSM2518_SAI_CTRL2_BCLK_INVERT; invert_fclk = false; break; case SND_SOC_DAIFMT_NB_IF: invert_fclk = true; break; case SND_SOC_DAIFMT_IB_IF: ctrl2 |= SSM2518_SAI_CTRL2_BCLK_INVERT; invert_fclk = true; break; default: return -EINVAL; } ssm2518->right_j = false; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: ctrl1 |= SSM2518_SAI_CTRL1_FMT_I2S; break; case SND_SOC_DAIFMT_LEFT_J: ctrl1 |= SSM2518_SAI_CTRL1_FMT_LJ; invert_fclk = !invert_fclk; break; case SND_SOC_DAIFMT_RIGHT_J: ctrl1 |= SSM2518_SAI_CTRL1_FMT_RJ_24BIT; ssm2518->right_j = true; invert_fclk = !invert_fclk; break; case SND_SOC_DAIFMT_DSP_A: ctrl2 |= SSM2518_SAI_CTRL2_LRCLK_PULSE; ctrl1 |= SSM2518_SAI_CTRL1_FMT_I2S; invert_fclk = false; break; case SND_SOC_DAIFMT_DSP_B: ctrl2 |= SSM2518_SAI_CTRL2_LRCLK_PULSE; ctrl1 |= SSM2518_SAI_CTRL1_FMT_LJ; invert_fclk = false; break; default: return -EINVAL; } if (invert_fclk) ctrl2 |= SSM2518_SAI_CTRL2_LRCLK_INVERT; ret = regmap_write(ssm2518->regmap, SSM2518_REG_SAI_CTRL1, ctrl1); if (ret) return ret; return regmap_write(ssm2518->regmap, SSM2518_REG_SAI_CTRL2, ctrl2); } static int ssm2518_set_power(struct ssm2518 *ssm2518, bool enable) { int ret = 0; if (!enable) { ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_POWER1, SSM2518_POWER1_SPWDN, SSM2518_POWER1_SPWDN); regcache_mark_dirty(ssm2518->regmap); } if (ssm2518->enable_gpio) gpiod_set_value_cansleep(ssm2518->enable_gpio, enable); regcache_cache_only(ssm2518->regmap, !enable); if (enable) { ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_POWER1, SSM2518_POWER1_SPWDN | SSM2518_POWER1_RESET, 0x00); regcache_sync(ssm2518->regmap); } return ret; } static int ssm2518_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { struct ssm2518 *ssm2518 = 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 = ssm2518_set_power(ssm2518, true); break; case SND_SOC_BIAS_OFF: ret = ssm2518_set_power(ssm2518, false); break; } return ret; } static int ssm2518_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, unsigned int rx_mask, int slots, int width) { struct ssm2518 *ssm2518 = snd_soc_component_get_drvdata(dai->component); unsigned int ctrl1, ctrl2; int left_slot, right_slot; int ret; if (slots == 0) return regmap_update_bits(ssm2518->regmap, SSM2518_REG_SAI_CTRL1, SSM2518_SAI_CTRL1_SAI_MASK, SSM2518_SAI_CTRL1_SAI_I2S); if (tx_mask == 0 || rx_mask != 0) return -EINVAL; if (slots == 1) { if (tx_mask != 1) return -EINVAL; left_slot = 0; right_slot = 0; } else { /* We assume the left channel < right channel */ left_slot = __ffs(tx_mask); tx_mask &= ~(1 << left_slot); if (tx_mask == 0) { right_slot = left_slot; } else { right_slot = __ffs(tx_mask); tx_mask &= ~(1 << right_slot); } } if (tx_mask != 0 || left_slot >= slots || right_slot >= slots) return -EINVAL; switch (width) { case 16: ctrl2 = SSM2518_SAI_CTRL2_SLOT_WIDTH_16; break; case 24: ctrl2 = SSM2518_SAI_CTRL2_SLOT_WIDTH_24; break; case 32: ctrl2 = SSM2518_SAI_CTRL2_SLOT_WIDTH_32; break; default: return -EINVAL; } switch (slots) { case 1: ctrl1 = SSM2518_SAI_CTRL1_SAI_MONO; break; case 2: ctrl1 = SSM2518_SAI_CTRL1_SAI_TDM_2; break; case 4: ctrl1 = SSM2518_SAI_CTRL1_SAI_TDM_4; break; case 8: ctrl1 = SSM2518_SAI_CTRL1_SAI_TDM_8; break; case 16: ctrl1 = SSM2518_SAI_CTRL1_SAI_TDM_16; break; default: return -EINVAL; } ret = regmap_write(ssm2518->regmap, SSM2518_REG_CHAN_MAP, (left_slot << SSM2518_CHAN_MAP_LEFT_SLOT_OFFSET) | (right_slot << SSM2518_CHAN_MAP_RIGHT_SLOT_OFFSET)); if (ret) return ret; ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_SAI_CTRL1, SSM2518_SAI_CTRL1_SAI_MASK, ctrl1); if (ret) return ret; return regmap_update_bits(ssm2518->regmap, SSM2518_REG_SAI_CTRL2, SSM2518_SAI_CTRL2_SLOT_WIDTH_MASK, ctrl2); } static int ssm2518_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct ssm2518 *ssm2518 = snd_soc_component_get_drvdata(dai->component); if (ssm2518->constraints) snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_RATE, ssm2518->constraints); return 0; } #define SSM2518_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32) static const struct snd_soc_dai_ops ssm2518_dai_ops = { .startup = ssm2518_startup, .hw_params = ssm2518_hw_params, .mute_stream = ssm2518_mute, .set_fmt = ssm2518_set_dai_fmt, .set_tdm_slot = ssm2518_set_tdm_slot, .no_capture_mute = 1, }; static struct snd_soc_dai_driver ssm2518_dai = { .name = "ssm2518-hifi", .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_96000, .formats = SSM2518_FORMATS, }, .ops = &ssm2518_dai_ops, }; static int ssm2518_set_sysclk(struct snd_soc_component *component, int clk_id, int source, unsigned int freq, int dir) { struct ssm2518 *ssm2518 = snd_soc_component_get_drvdata(component); unsigned int val; if (clk_id != SSM2518_SYSCLK) return -EINVAL; switch (source) { case SSM2518_SYSCLK_SRC_MCLK: val = 0; break; case SSM2518_SYSCLK_SRC_BCLK: /* In this case the bitclock is used as the system clock, and * the bitclock signal needs to be connected to the MCLK pin and * the BCLK pin is left unconnected */ val = SSM2518_POWER1_NO_BCLK; break; default: return -EINVAL; } switch (freq) { case 0: ssm2518->constraints = NULL; break; case 2048000: case 4096000: case 8192000: case 3200000: case 6400000: case 12800000: ssm2518->constraints = &ssm2518_constraints_2048000; break; case 2822000: case 5644800: case 11289600: case 16934400: case 22579200: case 33868800: case 4410000: case 8820000: case 17640000: ssm2518->constraints = &ssm2518_constraints_2822000; break; case 3072000: case 6144000: case 38864000: case 4800000: case 9600000: case 19200000: ssm2518->constraints = &ssm2518_constraints_3072000; break; case 12288000: case 16384000: case 24576000: ssm2518->constraints = &ssm2518_constraints_12288000; break; default: return -EINVAL; } ssm2518->sysclk = freq; return regmap_update_bits(ssm2518->regmap, SSM2518_REG_POWER1, SSM2518_POWER1_NO_BCLK, val); } static const struct snd_soc_component_driver ssm2518_component_driver = { .set_bias_level = ssm2518_set_bias_level, .set_sysclk = ssm2518_set_sysclk, .controls = ssm2518_snd_controls, .num_controls = ARRAY_SIZE(ssm2518_snd_controls), .dapm_widgets = ssm2518_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(ssm2518_dapm_widgets), .dapm_routes = ssm2518_routes, .num_dapm_routes = ARRAY_SIZE(ssm2518_routes), .use_pmdown_time = 1, .endianness = 1, }; static const struct regmap_config ssm2518_regmap_config = { .val_bits = 8, .reg_bits = 8, .max_register = SSM2518_REG_DRC_9, .cache_type = REGCACHE_RBTREE, .reg_defaults = ssm2518_reg_defaults, .num_reg_defaults = ARRAY_SIZE(ssm2518_reg_defaults), }; static int ssm2518_i2c_probe(struct i2c_client *i2c) { struct ssm2518 *ssm2518; int ret; ssm2518 = devm_kzalloc(&i2c->dev, sizeof(*ssm2518), GFP_KERNEL); if (ssm2518 == NULL) return -ENOMEM; /* Start with enabling the chip */ ssm2518->enable_gpio = devm_gpiod_get_optional(&i2c->dev, NULL, GPIOD_OUT_HIGH); ret = PTR_ERR_OR_ZERO(ssm2518->enable_gpio); if (ret) return ret; gpiod_set_consumer_name(ssm2518->enable_gpio, "SSM2518 nSD"); i2c_set_clientdata(i2c, ssm2518); ssm2518->regmap = devm_regmap_init_i2c(i2c, &ssm2518_regmap_config); if (IS_ERR(ssm2518->regmap)) return PTR_ERR(ssm2518->regmap); /* * 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(ssm2518->regmap, true); ret = regmap_write(ssm2518->regmap, SSM2518_REG_POWER1, SSM2518_POWER1_RESET); regcache_cache_bypass(ssm2518->regmap, false); if (ret) return ret; ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_POWER2, SSM2518_POWER2_APWDN, 0x00); if (ret) return ret; ret = ssm2518_set_power(ssm2518, false); if (ret) return ret; return devm_snd_soc_register_component(&i2c->dev, &ssm2518_component_driver, &ssm2518_dai, 1); } #ifdef CONFIG_OF static const struct of_device_id ssm2518_dt_ids[] = { { .compatible = "adi,ssm2518", }, { } }; MODULE_DEVICE_TABLE(of, ssm2518_dt_ids); #endif static const struct i2c_device_id ssm2518_i2c_ids[] = { { "ssm2518", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, ssm2518_i2c_ids); static struct i2c_driver ssm2518_driver = { .driver = { .name = "ssm2518", .of_match_table = of_match_ptr(ssm2518_dt_ids), }, .probe = ssm2518_i2c_probe, .id_table = ssm2518_i2c_ids, }; module_i2c_driver(ssm2518_driver); MODULE_DESCRIPTION("ASoC SSM2518 driver"); MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); MODULE_LICENSE("GPL");
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