// SPDX-License-Identifier: GPL-2.0 // Driver for the Texas Instruments TAS2780 Mono // Audio amplifier // Copyright (C) 2022 Texas Instruments Inc. #include <linux/module.h> #include <linux/err.h> #include <linux/pm.h> #include <linux/i2c.h> #include <linux/gpio.h> #include <linux/gpio/consumer.h> #include <linux/regmap.h> #include <linux/of.h> #include <linux/of_gpio.h> #include <sound/soc.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/tlv.h> #include "tas2780.h" struct tas2780_priv { struct snd_soc_component *component; struct gpio_desc *reset_gpio; struct regmap *regmap; struct device *dev; int v_sense_slot; int i_sense_slot; }; static void tas2780_reset(struct tas2780_priv *tas2780) { int ret = 0; if (tas2780->reset_gpio) { gpiod_set_value_cansleep(tas2780->reset_gpio, 0); usleep_range(2000, 2050); gpiod_set_value_cansleep(tas2780->reset_gpio, 1); usleep_range(2000, 2050); } snd_soc_component_write(tas2780->component, TAS2780_SW_RST, TAS2780_RST); if (ret) dev_err(tas2780->dev, "%s:errCode:0x%x Reset error!\n", __func__, ret); } #ifdef CONFIG_PM static int tas2780_codec_suspend(struct snd_soc_component *component) { struct tas2780_priv *tas2780 = snd_soc_component_get_drvdata(component); int ret = 0; ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL, TAS2780_PWR_CTRL_MASK, TAS2780_PWR_CTRL_SHUTDOWN); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%0x:power down error\n", __func__, ret); goto err; } ret = 0; regcache_cache_only(tas2780->regmap, true); regcache_mark_dirty(tas2780->regmap); err: return ret; } static int tas2780_codec_resume(struct snd_soc_component *component) { struct tas2780_priv *tas2780 = snd_soc_component_get_drvdata(component); int ret = 0; ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL, TAS2780_PWR_CTRL_MASK, TAS2780_PWR_CTRL_ACTIVE); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%0x:power down error\n", __func__, ret); goto err; } ret = 0; regcache_cache_only(tas2780->regmap, false); ret = regcache_sync(tas2780->regmap); err: return ret; } #endif static const char * const tas2780_ASI1_src[] = { "I2C offset", "Left", "Right", "LeftRightDiv2", }; static SOC_ENUM_SINGLE_DECL( tas2780_ASI1_src_enum, TAS2780_TDM_CFG2, 4, tas2780_ASI1_src); static const struct snd_kcontrol_new tas2780_asi1_mux = SOC_DAPM_ENUM("ASI1 Source", tas2780_ASI1_src_enum); static const struct snd_kcontrol_new isense_switch = SOC_DAPM_SINGLE("Switch", TAS2780_PWR_CTRL, TAS2780_ISENSE_POWER_EN, 1, 1); static const struct snd_kcontrol_new vsense_switch = SOC_DAPM_SINGLE("Switch", TAS2780_PWR_CTRL, TAS2780_VSENSE_POWER_EN, 1, 1); static const struct snd_soc_dapm_widget tas2780_dapm_widgets[] = { SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2780_asi1_mux), SND_SOC_DAPM_SWITCH("ISENSE", TAS2780_PWR_CTRL, TAS2780_ISENSE_POWER_EN, 1, &isense_switch), SND_SOC_DAPM_SWITCH("VSENSE", TAS2780_PWR_CTRL, TAS2780_VSENSE_POWER_EN, 1, &vsense_switch), SND_SOC_DAPM_OUTPUT("OUT"), SND_SOC_DAPM_SIGGEN("VMON"), SND_SOC_DAPM_SIGGEN("IMON") }; static const struct snd_soc_dapm_route tas2780_audio_map[] = { {"ASI1 Sel", "I2C offset", "ASI1"}, {"ASI1 Sel", "Left", "ASI1"}, {"ASI1 Sel", "Right", "ASI1"}, {"ASI1 Sel", "LeftRightDiv2", "ASI1"}, {"OUT", NULL, "ASI1 Sel"}, {"ISENSE", "Switch", "IMON"}, {"VSENSE", "Switch", "VMON"}, }; static int tas2780_mute(struct snd_soc_dai *dai, int mute, int direction) { struct snd_soc_component *component = dai->component; struct tas2780_priv *tas2780 = snd_soc_component_get_drvdata(component); int ret = 0; ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL, TAS2780_PWR_CTRL_MASK, mute ? TAS2780_PWR_CTRL_MUTE : 0); if (ret < 0) { dev_err(tas2780->dev, "%s: Failed to set powercontrol\n", __func__); goto err; } ret = 0; err: return ret; } static int tas2780_set_bitwidth(struct tas2780_priv *tas2780, int bitwidth) { struct snd_soc_component *component = tas2780->component; int sense_en; int val; int ret; int slot_size; switch (bitwidth) { case SNDRV_PCM_FORMAT_S16_LE: ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2, TAS2780_TDM_CFG2_RXW_MASK, TAS2780_TDM_CFG2_RXW_16BITS); slot_size = TAS2780_TDM_CFG2_RXS_16BITS; break; case SNDRV_PCM_FORMAT_S24_LE: ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2, TAS2780_TDM_CFG2_RXW_MASK, TAS2780_TDM_CFG2_RXW_24BITS); slot_size = TAS2780_TDM_CFG2_RXS_24BITS; break; case SNDRV_PCM_FORMAT_S32_LE: ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2, TAS2780_TDM_CFG2_RXW_MASK, TAS2780_TDM_CFG2_RXW_32BITS); slot_size = TAS2780_TDM_CFG2_RXS_32BITS; break; default: ret = -EINVAL; } if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x set bitwidth error\n", __func__, ret); goto err; } ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2, TAS2780_TDM_CFG2_RXS_MASK, slot_size); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x set RX slot size error\n", __func__, ret); goto err; } val = snd_soc_component_read(tas2780->component, TAS2780_PWR_CTRL); if (val < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x read PWR_CTRL error\n", __func__, val); ret = val; goto err; } if (val & (1 << TAS2780_VSENSE_POWER_EN)) sense_en = 0; else sense_en = TAS2780_TDM_CFG5_VSNS_ENABLE; ret = snd_soc_component_update_bits(tas2780->component, TAS2780_TDM_CFG5, TAS2780_TDM_CFG5_VSNS_ENABLE, sense_en); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x enable vSNS error\n", __func__, ret); goto err; } if (val & (1 << TAS2780_ISENSE_POWER_EN)) sense_en = 0; else sense_en = TAS2780_TDM_CFG6_ISNS_ENABLE; ret = snd_soc_component_update_bits(tas2780->component, TAS2780_TDM_CFG6, TAS2780_TDM_CFG6_ISNS_ENABLE, sense_en); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x enable iSNS error\n", __func__, ret); goto err; } ret = 0; err: return ret; } static int tas2780_set_samplerate( struct tas2780_priv *tas2780, int samplerate) { struct snd_soc_component *component = tas2780->component; int ramp_rate_val; int ret; switch (samplerate) { case 48000: ramp_rate_val = TAS2780_TDM_CFG0_SMP_48KHZ | TAS2780_TDM_CFG0_44_1_48KHZ; break; case 44100: ramp_rate_val = TAS2780_TDM_CFG0_SMP_44_1KHZ | TAS2780_TDM_CFG0_44_1_48KHZ; break; case 96000: ramp_rate_val = TAS2780_TDM_CFG0_SMP_48KHZ | TAS2780_TDM_CFG0_88_2_96KHZ; break; case 88200: ramp_rate_val = TAS2780_TDM_CFG0_SMP_44_1KHZ | TAS2780_TDM_CFG0_88_2_96KHZ; break; default: return -EINVAL; } ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG0, TAS2780_TDM_CFG0_SMP_MASK | TAS2780_TDM_CFG0_MASK, ramp_rate_val); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x Failed to set ramp_rate_val\n", __func__, ret); goto err; } ret = 0; err: return ret; } static int tas2780_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 tas2780_priv *tas2780 = snd_soc_component_get_drvdata(component); int ret; ret = tas2780_set_bitwidth(tas2780, params_format(params)); if (ret < 0) return ret; return tas2780_set_samplerate(tas2780, params_rate(params)); } static int tas2780_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct snd_soc_component *component = dai->component; struct tas2780_priv *tas2780 = snd_soc_component_get_drvdata(component); u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0; int iface; int ret = 0; switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: asi_cfg_1 = TAS2780_TDM_CFG1_RX_RISING; break; case SND_SOC_DAIFMT_IB_NF: asi_cfg_1 = TAS2780_TDM_CFG1_RX_FALLING; break; default: dev_err(tas2780->dev, "ASI format Inverse is not found\n"); return -EINVAL; } ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG1, TAS2780_TDM_CFG1_RX_MASK, asi_cfg_1); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x Failed to set asi_cfg_1\n", __func__, ret); goto err; } if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_I2S) || ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_DSP_A)){ iface = TAS2780_TDM_CFG2_SCFG_I2S; tdm_rx_start_slot = 1; } else { if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_DSP_B) || ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_LEFT_J)) { iface = TAS2780_TDM_CFG2_SCFG_LEFT_J; tdm_rx_start_slot = 0; } else { dev_err(tas2780->dev, "%s:DAI Format is not found, fmt=0x%x\n", __func__, fmt); ret = -EINVAL; goto err; } } ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG1, TAS2780_TDM_CFG1_MASK, (tdm_rx_start_slot << TAS2780_TDM_CFG1_51_SHIFT)); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x Failed to set tdm_rx_start_slot\n", __func__, ret); goto err; } ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2, TAS2780_TDM_CFG2_SCFG_MASK, iface); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x Failed to set iface\n", __func__, ret); goto err; } ret = 0; err: return ret; } static int tas2780_set_dai_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) { struct snd_soc_component *component = dai->component; struct tas2780_priv *tas2780 = snd_soc_component_get_drvdata(component); int left_slot, right_slot; int slots_cfg; int slot_size; int ret = 0; if (tx_mask == 0 || rx_mask != 0) return -EINVAL; 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; slots_cfg = (right_slot << TAS2780_TDM_CFG3_RXS_SHIFT) | left_slot; ret = snd_soc_component_write(component, TAS2780_TDM_CFG3, slots_cfg); if (ret) { dev_err(tas2780->dev, "%s:errCode:0x%x Failed to set slots_cfg\n", __func__, ret); goto err; } switch (slot_width) { case 16: slot_size = TAS2780_TDM_CFG2_RXS_16BITS; break; case 24: slot_size = TAS2780_TDM_CFG2_RXS_24BITS; break; case 32: slot_size = TAS2780_TDM_CFG2_RXS_32BITS; break; default: ret = -EINVAL; goto err; } ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2, TAS2780_TDM_CFG2_RXS_MASK, slot_size); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x Failed to set slot_size\n", __func__, ret); goto err; } ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG5, TAS2780_TDM_CFG5_50_MASK, tas2780->v_sense_slot); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x Failed to set v_sense_slot\n", __func__, ret); goto err; } ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG6, TAS2780_TDM_CFG6_50_MASK, tas2780->i_sense_slot); if (ret < 0) { dev_err(tas2780->dev, "%s:errCode:0x%x Failed to set i_sense_slot\n", __func__, ret); goto err; } ret = 0; err: return ret; } static const struct snd_soc_dai_ops tas2780_dai_ops = { .mute_stream = tas2780_mute, .hw_params = tas2780_hw_params, .set_fmt = tas2780_set_fmt, .set_tdm_slot = tas2780_set_dai_tdm_slot, .no_capture_mute = 1, }; #define TAS2780_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) #define TAS2780_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\ SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_88200) static struct snd_soc_dai_driver tas2780_dai_driver[] = { { .name = "tas2780 ASI1", .id = 0, .playback = { .stream_name = "ASI1 Playback", .channels_min = 2, .channels_max = 2, .rates = TAS2780_RATES, .formats = TAS2780_FORMATS, }, .capture = { .stream_name = "ASI1 Capture", .channels_min = 1, .channels_max = 2, .rates = TAS2780_RATES, .formats = TAS2780_FORMATS, }, .ops = &tas2780_dai_ops, .symmetric_rate = 1, }, }; static int tas2780_codec_probe(struct snd_soc_component *component) { struct tas2780_priv *tas2780 = snd_soc_component_get_drvdata(component); int ret = 0; tas2780->component = component; tas2780_reset(tas2780); ret = snd_soc_component_update_bits(component, TAS2780_IC_CFG, TAS2780_IC_CFG_MASK, TAS2780_IC_CFG_ENABLE); if (ret < 0) dev_err(tas2780->dev, "%s:errCode:0x%0x\n", __func__, ret); return ret; } static DECLARE_TLV_DB_SCALE(tas2780_digital_tlv, 1100, 50, 0); static DECLARE_TLV_DB_SCALE(tas2780_playback_volume, -10000, 50, 0); static const struct snd_kcontrol_new tas2780_snd_controls[] = { SOC_SINGLE_TLV("Speaker Volume", TAS2780_DVC, 0, TAS2780_DVC_MAX, 1, tas2780_playback_volume), SOC_SINGLE_TLV("Amp Gain Volume", TAS2780_CHNL_0, 0, 0x14, 0, tas2780_digital_tlv), }; static const struct snd_soc_component_driver soc_component_driver_tas2780 = { .probe = tas2780_codec_probe, #ifdef CONFIG_PM .suspend = tas2780_codec_suspend, .resume = tas2780_codec_resume, #endif .controls = tas2780_snd_controls, .num_controls = ARRAY_SIZE(tas2780_snd_controls), .dapm_widgets = tas2780_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(tas2780_dapm_widgets), .dapm_routes = tas2780_audio_map, .num_dapm_routes = ARRAY_SIZE(tas2780_audio_map), .idle_bias_on = 1, .endianness = 1, }; static const struct reg_default tas2780_reg_defaults[] = { { TAS2780_PAGE, 0x00 }, { TAS2780_SW_RST, 0x00 }, { TAS2780_PWR_CTRL, 0x1a }, { TAS2780_DVC, 0x00 }, { TAS2780_CHNL_0, 0x00 }, { TAS2780_TDM_CFG0, 0x09 }, { TAS2780_TDM_CFG1, 0x02 }, { TAS2780_TDM_CFG2, 0x0a }, { TAS2780_TDM_CFG3, 0x10 }, { TAS2780_TDM_CFG5, 0x42 }, }; static const struct regmap_range_cfg tas2780_regmap_ranges[] = { { .range_min = 0, .range_max = 1 * 128, .selector_reg = TAS2780_PAGE, .selector_mask = 0xff, .selector_shift = 0, .window_start = 0, .window_len = 128, }, }; static const struct regmap_config tas2780_i2c_regmap = { .reg_bits = 8, .val_bits = 8, .reg_defaults = tas2780_reg_defaults, .num_reg_defaults = ARRAY_SIZE(tas2780_reg_defaults), .cache_type = REGCACHE_RBTREE, .ranges = tas2780_regmap_ranges, .num_ranges = ARRAY_SIZE(tas2780_regmap_ranges), .max_register = 1 * 128, }; static int tas2780_parse_dt(struct device *dev, struct tas2780_priv *tas2780) { int ret = 0; tas2780->reset_gpio = devm_gpiod_get_optional(tas2780->dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(tas2780->reset_gpio)) { if (PTR_ERR(tas2780->reset_gpio) == -EPROBE_DEFER) { tas2780->reset_gpio = NULL; return -EPROBE_DEFER; } } ret = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no", &tas2780->i_sense_slot); if (ret) tas2780->i_sense_slot = 0; ret = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no", &tas2780->v_sense_slot); if (ret) tas2780->v_sense_slot = 2; return 0; } static int tas2780_i2c_probe(struct i2c_client *client) { struct tas2780_priv *tas2780; int result; tas2780 = devm_kzalloc(&client->dev, sizeof(struct tas2780_priv), GFP_KERNEL); if (!tas2780) return -ENOMEM; tas2780->dev = &client->dev; i2c_set_clientdata(client, tas2780); dev_set_drvdata(&client->dev, tas2780); tas2780->regmap = devm_regmap_init_i2c(client, &tas2780_i2c_regmap); if (IS_ERR(tas2780->regmap)) { result = PTR_ERR(tas2780->regmap); dev_err(&client->dev, "Failed to allocate register map: %d\n", result); return result; } if (client->dev.of_node) { result = tas2780_parse_dt(&client->dev, tas2780); if (result) { dev_err(tas2780->dev, "%s: Failed to parse devicetree\n", __func__); return result; } } return devm_snd_soc_register_component(tas2780->dev, &soc_component_driver_tas2780, tas2780_dai_driver, ARRAY_SIZE(tas2780_dai_driver)); } static const struct i2c_device_id tas2780_i2c_id[] = { { "tas2780", 0}, { } }; MODULE_DEVICE_TABLE(i2c, tas2780_i2c_id); #if defined(CONFIG_OF) static const struct of_device_id tas2780_of_match[] = { { .compatible = "ti,tas2780" }, {}, }; MODULE_DEVICE_TABLE(of, tas2780_of_match); #endif static struct i2c_driver tas2780_i2c_driver = { .driver = { .name = "tas2780", .of_match_table = of_match_ptr(tas2780_of_match), }, .probe_new = tas2780_i2c_probe, .id_table = tas2780_i2c_id, }; module_i2c_driver(tas2780_i2c_driver); MODULE_AUTHOR("Raphael Xu <raphael-xu@ti.com>"); MODULE_DESCRIPTION("TAS2780 I2C Smart Amplifier driver"); MODULE_LICENSE("GPL");