| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Stephan Gerhold | 1310 | 73.02% | 1 | 12.50% |
| Vincent Knecht | 394 | 21.96% | 4 | 50.00% |
| Alexander Martinz | 89 | 4.96% | 2 | 25.00% |
| Uwe Kleine-König | 1 | 0.06% | 1 | 12.50% |
| Total | 1794 | 8 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2021 Stephan Gerhold * * Register definitions/sequences taken from various tfa98xx kernel drivers: * Copyright (C) 2014-2020 NXP Semiconductors, All Rights Reserved. * Copyright (C) 2013 Sony Mobile Communications Inc. */ #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <sound/soc.h> #define TFA989X_STATUSREG 0x00 #define TFA989X_BATTERYVOLTAGE 0x01 #define TFA989X_TEMPERATURE 0x02 #define TFA989X_REVISIONNUMBER 0x03 #define TFA989X_REVISIONNUMBER_REV_MSK GENMASK(7, 0) /* device revision */ #define TFA989X_I2SREG 0x04 #define TFA989X_I2SREG_RCV 2 /* receiver mode */ #define TFA989X_I2SREG_CHSA 6 /* amplifier input select */ #define TFA989X_I2SREG_CHSA_MSK GENMASK(7, 6) #define TFA989X_I2SREG_I2SSR 12 /* sample rate */ #define TFA989X_I2SREG_I2SSR_MSK GENMASK(15, 12) #define TFA989X_BAT_PROT 0x05 #define TFA989X_AUDIO_CTR 0x06 #define TFA989X_DCDCBOOST 0x07 #define TFA989X_SPKR_CALIBRATION 0x08 #define TFA989X_SYS_CTRL 0x09 #define TFA989X_SYS_CTRL_PWDN 0 /* power down */ #define TFA989X_SYS_CTRL_I2CR 1 /* I2C reset */ #define TFA989X_SYS_CTRL_CFE 2 /* enable CoolFlux DSP */ #define TFA989X_SYS_CTRL_AMPE 3 /* enable amplifier */ #define TFA989X_SYS_CTRL_DCA 4 /* enable boost */ #define TFA989X_SYS_CTRL_SBSL 5 /* DSP configured */ #define TFA989X_SYS_CTRL_AMPC 6 /* amplifier enabled by DSP */ #define TFA989X_I2S_SEL_REG 0x0a #define TFA989X_I2S_SEL_REG_SPKR_MSK GENMASK(10, 9) /* speaker impedance */ #define TFA989X_I2S_SEL_REG_DCFG_MSK GENMASK(14, 11) /* DCDC compensation */ #define TFA989X_HIDE_UNHIDE_KEY 0x40 #define TFA989X_PWM_CONTROL 0x41 #define TFA989X_CURRENTSENSE1 0x46 #define TFA989X_CURRENTSENSE2 0x47 #define TFA989X_CURRENTSENSE3 0x48 #define TFA989X_CURRENTSENSE4 0x49 #define TFA9890_REVISION 0x80 #define TFA9895_REVISION 0x12 #define TFA9897_REVISION 0x97 struct tfa989x_rev { unsigned int rev; int (*init)(struct regmap *regmap); }; struct tfa989x { const struct tfa989x_rev *rev; struct regulator *vddd_supply; struct gpio_desc *rcv_gpiod; }; static bool tfa989x_writeable_reg(struct device *dev, unsigned int reg) { return reg > TFA989X_REVISIONNUMBER; } static bool tfa989x_volatile_reg(struct device *dev, unsigned int reg) { return reg < TFA989X_REVISIONNUMBER; } static const struct regmap_config tfa989x_regmap = { .reg_bits = 8, .val_bits = 16, .writeable_reg = tfa989x_writeable_reg, .volatile_reg = tfa989x_volatile_reg, .cache_type = REGCACHE_RBTREE, }; static const char * const chsa_text[] = { "Left", "Right", /* "DSP" */ }; static SOC_ENUM_SINGLE_DECL(chsa_enum, TFA989X_I2SREG, TFA989X_I2SREG_CHSA, chsa_text); static const struct snd_kcontrol_new chsa_mux = SOC_DAPM_ENUM("Amp Input", chsa_enum); static const struct snd_soc_dapm_widget tfa989x_dapm_widgets[] = { SND_SOC_DAPM_OUTPUT("OUT"), SND_SOC_DAPM_SUPPLY("POWER", TFA989X_SYS_CTRL, TFA989X_SYS_CTRL_PWDN, 1, NULL, 0), SND_SOC_DAPM_OUT_DRV("AMPE", TFA989X_SYS_CTRL, TFA989X_SYS_CTRL_AMPE, 0, NULL, 0), SND_SOC_DAPM_MUX("Amp Input", SND_SOC_NOPM, 0, 0, &chsa_mux), SND_SOC_DAPM_AIF_IN("AIFINL", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_AIF_IN("AIFINR", "HiFi Playback", 1, SND_SOC_NOPM, 0, 0), }; static const struct snd_soc_dapm_route tfa989x_dapm_routes[] = { {"OUT", NULL, "AMPE"}, {"AMPE", NULL, "POWER"}, {"AMPE", NULL, "Amp Input"}, {"Amp Input", "Left", "AIFINL"}, {"Amp Input", "Right", "AIFINR"}, }; static int tfa989x_put_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); struct tfa989x *tfa989x = snd_soc_component_get_drvdata(component); gpiod_set_value_cansleep(tfa989x->rcv_gpiod, ucontrol->value.enumerated.item[0]); return snd_soc_put_enum_double(kcontrol, ucontrol); } static const char * const mode_text[] = { "Speaker", "Receiver" }; static SOC_ENUM_SINGLE_DECL(mode_enum, TFA989X_I2SREG, TFA989X_I2SREG_RCV, mode_text); static const struct snd_kcontrol_new tfa989x_mode_controls[] = { SOC_ENUM_EXT("Mode", mode_enum, snd_soc_get_enum_double, tfa989x_put_mode), }; static int tfa989x_probe(struct snd_soc_component *component) { struct tfa989x *tfa989x = snd_soc_component_get_drvdata(component); if (tfa989x->rev->rev == TFA9897_REVISION) return snd_soc_add_component_controls(component, tfa989x_mode_controls, ARRAY_SIZE(tfa989x_mode_controls)); return 0; } static const struct snd_soc_component_driver tfa989x_component = { .probe = tfa989x_probe, .dapm_widgets = tfa989x_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(tfa989x_dapm_widgets), .dapm_routes = tfa989x_dapm_routes, .num_dapm_routes = ARRAY_SIZE(tfa989x_dapm_routes), .use_pmdown_time = 1, .endianness = 1, }; static const unsigned int tfa989x_rates[] = { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }; static int tfa989x_find_sample_rate(unsigned int rate) { int i; for (i = 0; i < ARRAY_SIZE(tfa989x_rates); ++i) if (tfa989x_rates[i] == rate) return i; return -EINVAL; } static int tfa989x_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; int sr; sr = tfa989x_find_sample_rate(params_rate(params)); if (sr < 0) return sr; return snd_soc_component_update_bits(component, TFA989X_I2SREG, TFA989X_I2SREG_I2SSR_MSK, sr << TFA989X_I2SREG_I2SSR); } static const struct snd_soc_dai_ops tfa989x_dai_ops = { .hw_params = tfa989x_hw_params, }; static struct snd_soc_dai_driver tfa989x_dai = { .name = "tfa989x-hifi", .playback = { .stream_name = "HiFi Playback", .formats = SNDRV_PCM_FMTBIT_S16_LE, .rates = SNDRV_PCM_RATE_8000_48000, .rate_min = 8000, .rate_max = 48000, .channels_min = 1, .channels_max = 2, }, .ops = &tfa989x_dai_ops, }; static int tfa9890_init(struct regmap *regmap) { int ret; /* temporarily allow access to hidden registers */ ret = regmap_write(regmap, TFA989X_HIDE_UNHIDE_KEY, 0x5a6b); if (ret) return ret; /* update PLL registers */ ret = regmap_set_bits(regmap, 0x59, 0x3); if (ret) return ret; /* hide registers again */ ret = regmap_write(regmap, TFA989X_HIDE_UNHIDE_KEY, 0x0000); if (ret) return ret; return regmap_write(regmap, TFA989X_CURRENTSENSE2, 0x7BE1); } static const struct tfa989x_rev tfa9890_rev = { .rev = TFA9890_REVISION, .init = tfa9890_init, }; static const struct reg_sequence tfa9895_reg_init[] = { /* some other registers must be set for optimal amplifier behaviour */ { TFA989X_BAT_PROT, 0x13ab }, { TFA989X_AUDIO_CTR, 0x001f }, /* peak voltage protection is always on, but may be written */ { TFA989X_SPKR_CALIBRATION, 0x3c4e }, /* TFA989X_SYSCTRL_DCA = 0 */ { TFA989X_SYS_CTRL, 0x024d }, { TFA989X_PWM_CONTROL, 0x0308 }, { TFA989X_CURRENTSENSE4, 0x0e82 }, }; static int tfa9895_init(struct regmap *regmap) { return regmap_multi_reg_write(regmap, tfa9895_reg_init, ARRAY_SIZE(tfa9895_reg_init)); } static const struct tfa989x_rev tfa9895_rev = { .rev = TFA9895_REVISION, .init = tfa9895_init, }; static int tfa9897_init(struct regmap *regmap) { int ret; /* Reduce slewrate by clearing iddqtestbst to avoid booster damage */ ret = regmap_write(regmap, TFA989X_CURRENTSENSE3, 0x0300); if (ret) return ret; /* Enable clipping */ ret = regmap_clear_bits(regmap, TFA989X_CURRENTSENSE4, 0x1); if (ret) return ret; /* Set required TDM configuration */ return regmap_write(regmap, 0x14, 0x0); } static const struct tfa989x_rev tfa9897_rev = { .rev = TFA9897_REVISION, .init = tfa9897_init, }; /* * Note: At the moment this driver bypasses the "CoolFlux DSP" built into the * TFA989X amplifiers. Unfortunately, there seems to be absolutely * no documentation for it - the public "short datasheets" do not provide * any information about the DSP or available registers. * * Usually the TFA989X amplifiers are configured through proprietary userspace * libraries. There are also some (rather complex) kernel drivers but even those * rely on obscure firmware blobs for configuration (so-called "containers"). * They seem to contain different "profiles" with tuned speaker settings, sample * rates and volume steps (which would be better exposed as separate ALSA mixers). * * Bypassing the DSP disables volume control (and perhaps some speaker * optimization?), but at least allows using the speaker without obscure * kernel drivers and firmware. * * Ideally NXP (or now Goodix) should release proper documentation for these * amplifiers so that support for the "CoolFlux DSP" can be implemented properly. */ static int tfa989x_dsp_bypass(struct regmap *regmap) { int ret; /* Clear CHSA to bypass DSP and take input from I2S 1 left channel */ ret = regmap_clear_bits(regmap, TFA989X_I2SREG, TFA989X_I2SREG_CHSA_MSK); if (ret) return ret; /* Set DCDC compensation to off and speaker impedance to 8 ohm */ ret = regmap_update_bits(regmap, TFA989X_I2S_SEL_REG, TFA989X_I2S_SEL_REG_DCFG_MSK | TFA989X_I2S_SEL_REG_SPKR_MSK, TFA989X_I2S_SEL_REG_SPKR_MSK); if (ret) return ret; /* Set DCDC to follower mode and disable CoolFlux DSP */ return regmap_clear_bits(regmap, TFA989X_SYS_CTRL, BIT(TFA989X_SYS_CTRL_DCA) | BIT(TFA989X_SYS_CTRL_CFE) | BIT(TFA989X_SYS_CTRL_AMPC)); } static void tfa989x_regulator_disable(void *data) { struct tfa989x *tfa989x = data; regulator_disable(tfa989x->vddd_supply); } static int tfa989x_i2c_probe(struct i2c_client *i2c) { struct device *dev = &i2c->dev; const struct tfa989x_rev *rev; struct tfa989x *tfa989x; struct regmap *regmap; unsigned int val; int ret; rev = device_get_match_data(dev); if (!rev) { dev_err(dev, "unknown device revision\n"); return -ENODEV; } tfa989x = devm_kzalloc(dev, sizeof(*tfa989x), GFP_KERNEL); if (!tfa989x) return -ENOMEM; tfa989x->rev = rev; i2c_set_clientdata(i2c, tfa989x); tfa989x->vddd_supply = devm_regulator_get(dev, "vddd"); if (IS_ERR(tfa989x->vddd_supply)) return dev_err_probe(dev, PTR_ERR(tfa989x->vddd_supply), "Failed to get vddd regulator\n"); if (tfa989x->rev->rev == TFA9897_REVISION) { tfa989x->rcv_gpiod = devm_gpiod_get_optional(dev, "rcv", GPIOD_OUT_LOW); if (IS_ERR(tfa989x->rcv_gpiod)) return PTR_ERR(tfa989x->rcv_gpiod); } regmap = devm_regmap_init_i2c(i2c, &tfa989x_regmap); if (IS_ERR(regmap)) return PTR_ERR(regmap); ret = regulator_enable(tfa989x->vddd_supply); if (ret) { dev_err(dev, "Failed to enable vddd regulator: %d\n", ret); return ret; } ret = devm_add_action_or_reset(dev, tfa989x_regulator_disable, tfa989x); if (ret) return ret; /* Bypass regcache for reset and init sequence */ regcache_cache_bypass(regmap, true); /* Dummy read to generate i2c clocks, required on some devices */ regmap_read(regmap, TFA989X_REVISIONNUMBER, &val); ret = regmap_read(regmap, TFA989X_REVISIONNUMBER, &val); if (ret) { dev_err(dev, "failed to read revision number: %d\n", ret); return ret; } val &= TFA989X_REVISIONNUMBER_REV_MSK; if (val != rev->rev) { dev_err(dev, "invalid revision number, expected %#x, got %#x\n", rev->rev, val); return -ENODEV; } ret = regmap_write(regmap, TFA989X_SYS_CTRL, BIT(TFA989X_SYS_CTRL_I2CR)); if (ret) { dev_err(dev, "failed to reset I2C registers: %d\n", ret); return ret; } ret = rev->init(regmap); if (ret) { dev_err(dev, "failed to initialize registers: %d\n", ret); return ret; } ret = tfa989x_dsp_bypass(regmap); if (ret) { dev_err(dev, "failed to enable DSP bypass: %d\n", ret); return ret; } regcache_cache_bypass(regmap, false); return devm_snd_soc_register_component(dev, &tfa989x_component, &tfa989x_dai, 1); } static const struct of_device_id tfa989x_of_match[] = { { .compatible = "nxp,tfa9890", .data = &tfa9890_rev }, { .compatible = "nxp,tfa9895", .data = &tfa9895_rev }, { .compatible = "nxp,tfa9897", .data = &tfa9897_rev }, { } }; MODULE_DEVICE_TABLE(of, tfa989x_of_match); static struct i2c_driver tfa989x_i2c_driver = { .driver = { .name = "tfa989x", .of_match_table = tfa989x_of_match, }, .probe = tfa989x_i2c_probe, }; module_i2c_driver(tfa989x_i2c_driver); MODULE_DESCRIPTION("ASoC NXP/Goodix TFA989X (TFA1) driver"); MODULE_AUTHOR("Stephan Gerhold <stephan@gerhold.net>"); MODULE_LICENSE("GPL");
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