// SPDX-License-Identifier: GPL-2.0+ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "i2s.h" #include "../codecs/wm8994.h" #define ARIES_MCLK1_FREQ 24000000 struct aries_wm8994_variant { unsigned int modem_dai_fmt; bool has_fm_radio; }; struct aries_wm8994_data { struct extcon_dev *usb_extcon; struct regulator *reg_main_micbias; struct regulator *reg_headset_micbias; struct gpio_desc *gpio_headset_detect; struct gpio_desc *gpio_headset_key; struct gpio_desc *gpio_earpath_sel; struct iio_channel *adc; const struct aries_wm8994_variant *variant; }; /* USB dock */ static struct snd_soc_jack aries_dock; static struct snd_soc_jack_pin dock_pins[] = { { .pin = "LINE", .mask = SND_JACK_LINEOUT, }, }; static int aries_extcon_notifier(struct notifier_block *this, unsigned long connected, void *_cmd) { if (connected) snd_soc_jack_report(&aries_dock, SND_JACK_LINEOUT, SND_JACK_LINEOUT); else snd_soc_jack_report(&aries_dock, 0, SND_JACK_LINEOUT); return NOTIFY_DONE; } static struct notifier_block aries_extcon_notifier_block = { .notifier_call = aries_extcon_notifier, }; /* Headset jack */ static struct snd_soc_jack aries_headset; static struct snd_soc_jack_pin jack_pins[] = { { .pin = "HP", .mask = SND_JACK_HEADPHONE, }, { .pin = "Headset Mic", .mask = SND_JACK_MICROPHONE, }, }; static struct snd_soc_jack_zone headset_zones[] = { { .min_mv = 0, .max_mv = 241, .jack_type = SND_JACK_HEADPHONE, }, { .min_mv = 242, .max_mv = 2980, .jack_type = SND_JACK_HEADSET, }, { .min_mv = 2981, .max_mv = UINT_MAX, .jack_type = SND_JACK_HEADPHONE, }, }; static irqreturn_t headset_det_irq_thread(int irq, void *data) { struct aries_wm8994_data *priv = (struct aries_wm8994_data *) data; int ret = 0; int time_left_ms = 300; int adc; while (time_left_ms > 0) { if (!gpiod_get_value(priv->gpio_headset_detect)) { snd_soc_jack_report(&aries_headset, 0, SND_JACK_HEADSET); gpiod_set_value(priv->gpio_earpath_sel, 0); return IRQ_HANDLED; } msleep(20); time_left_ms -= 20; } /* Temporarily enable micbias and earpath selector */ ret = regulator_enable(priv->reg_headset_micbias); if (ret) pr_err("%s failed to enable micbias: %d", __func__, ret); gpiod_set_value(priv->gpio_earpath_sel, 1); ret = iio_read_channel_processed(priv->adc, &adc); if (ret < 0) { /* failed to read ADC, so assume headphone */ pr_err("%s failed to read ADC, assuming headphones", __func__); snd_soc_jack_report(&aries_headset, SND_JACK_HEADPHONE, SND_JACK_HEADSET); } else { snd_soc_jack_report(&aries_headset, snd_soc_jack_get_type(&aries_headset, adc), SND_JACK_HEADSET); } ret = regulator_disable(priv->reg_headset_micbias); if (ret) pr_err("%s failed disable micbias: %d", __func__, ret); /* Disable earpath selector when no mic connected */ if (!(aries_headset.status & SND_JACK_MICROPHONE)) gpiod_set_value(priv->gpio_earpath_sel, 0); return IRQ_HANDLED; } static int headset_button_check(void *data) { struct aries_wm8994_data *priv = (struct aries_wm8994_data *) data; /* Filter out keypresses when 4 pole jack not detected */ if (gpiod_get_value_cansleep(priv->gpio_headset_key) && aries_headset.status & SND_JACK_MICROPHONE) return SND_JACK_BTN_0; return 0; } static struct snd_soc_jack_gpio headset_button_gpio[] = { { .name = "Media Button", .report = SND_JACK_BTN_0, .debounce_time = 30, .jack_status_check = headset_button_check, }, }; static int aries_spk_cfg(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_card *card = w->dapm->card; struct snd_soc_pcm_runtime *rtd; struct snd_soc_component *component; int ret = 0; rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); component = asoc_rtd_to_codec(rtd, 0)->component; /** * We have an odd setup - the SPKMODE pin is pulled up so * we only have access to the left side SPK configs, * but SPKOUTR isn't bridged so when playing back in * stereo, we only get the left hand channel. The only * option we're left with is to force the AIF into mono * mode. */ switch (event) { case SND_SOC_DAPM_POST_PMU: ret = snd_soc_component_update_bits(component, WM8994_AIF1_DAC1_FILTERS_1, WM8994_AIF1DAC1_MONO, WM8994_AIF1DAC1_MONO); break; case SND_SOC_DAPM_PRE_PMD: ret = snd_soc_component_update_bits(component, WM8994_AIF1_DAC1_FILTERS_1, WM8994_AIF1DAC1_MONO, 0); break; } return ret; } static int aries_main_bias(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_card *card = w->dapm->card; struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card); int ret = 0; switch (event) { case SND_SOC_DAPM_PRE_PMU: ret = regulator_enable(priv->reg_main_micbias); break; case SND_SOC_DAPM_POST_PMD: ret = regulator_disable(priv->reg_main_micbias); break; } return ret; } static int aries_headset_bias(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_card *card = w->dapm->card; struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card); int ret = 0; switch (event) { case SND_SOC_DAPM_PRE_PMU: ret = regulator_enable(priv->reg_headset_micbias); break; case SND_SOC_DAPM_POST_PMD: ret = regulator_disable(priv->reg_headset_micbias); break; } return ret; } static const struct snd_kcontrol_new aries_controls[] = { SOC_DAPM_PIN_SWITCH("Modem In"), SOC_DAPM_PIN_SWITCH("Modem Out"), }; static const struct snd_soc_dapm_widget aries_dapm_widgets[] = { SND_SOC_DAPM_HP("HP", NULL), SND_SOC_DAPM_SPK("SPK", aries_spk_cfg), SND_SOC_DAPM_SPK("RCV", NULL), SND_SOC_DAPM_LINE("LINE", NULL), SND_SOC_DAPM_MIC("Main Mic", aries_main_bias), SND_SOC_DAPM_MIC("Headset Mic", aries_headset_bias), SND_SOC_DAPM_MIC("Bluetooth Mic", NULL), SND_SOC_DAPM_SPK("Bluetooth SPK", NULL), SND_SOC_DAPM_LINE("Modem In", NULL), SND_SOC_DAPM_LINE("Modem Out", NULL), /* This must be last as it is conditionally not used */ SND_SOC_DAPM_LINE("FM In", NULL), }; static int aries_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); unsigned int pll_out; int ret; /* AIF1CLK should be >=3MHz for optimal performance */ if (params_width(params) == 24) pll_out = params_rate(params) * 384; else if (params_rate(params) == 8000 || params_rate(params) == 11025) pll_out = params_rate(params) * 512; else pll_out = params_rate(params) * 256; ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, ARIES_MCLK1_FREQ, pll_out); if (ret < 0) return ret; ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, pll_out, SND_SOC_CLOCK_IN); if (ret < 0) return ret; return 0; } static int aries_hw_free(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); int ret; /* Switch sysclk to MCLK1 */ ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, ARIES_MCLK1_FREQ, SND_SOC_CLOCK_IN); if (ret < 0) return ret; /* Stop PLL */ ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, ARIES_MCLK1_FREQ, 0); if (ret < 0) return ret; return 0; } /* * Main DAI operations */ static const struct snd_soc_ops aries_ops = { .hw_params = aries_hw_params, .hw_free = aries_hw_free, }; static int aries_baseband_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); unsigned int pll_out; int ret; pll_out = 8000 * 512; /* Set the codec FLL */ ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL2, WM8994_FLL_SRC_MCLK1, ARIES_MCLK1_FREQ, pll_out); if (ret < 0) return ret; /* Set the codec system clock */ ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL2, pll_out, SND_SOC_CLOCK_IN); if (ret < 0) return ret; return 0; } static int aries_late_probe(struct snd_soc_card *card) { struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card); int ret, irq; ret = snd_soc_card_jack_new_pins(card, "Dock", SND_JACK_LINEOUT, &aries_dock, dock_pins, ARRAY_SIZE(dock_pins)); if (ret) return ret; ret = devm_extcon_register_notifier(card->dev, priv->usb_extcon, EXTCON_JACK_LINE_OUT, &aries_extcon_notifier_block); if (ret) return ret; if (extcon_get_state(priv->usb_extcon, EXTCON_JACK_LINE_OUT) > 0) snd_soc_jack_report(&aries_dock, SND_JACK_LINEOUT, SND_JACK_LINEOUT); else snd_soc_jack_report(&aries_dock, 0, SND_JACK_LINEOUT); ret = snd_soc_card_jack_new_pins(card, "Headset", SND_JACK_HEADSET | SND_JACK_BTN_0, &aries_headset, jack_pins, ARRAY_SIZE(jack_pins)); if (ret) return ret; ret = snd_soc_jack_add_zones(&aries_headset, ARRAY_SIZE(headset_zones), headset_zones); if (ret) return ret; irq = gpiod_to_irq(priv->gpio_headset_detect); if (irq < 0) { dev_err(card->dev, "Failed to map headset detect gpio to irq"); return -EINVAL; } ret = devm_request_threaded_irq(card->dev, irq, NULL, headset_det_irq_thread, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "headset_detect", priv); if (ret) { dev_err(card->dev, "Failed to request headset detect irq"); return ret; } headset_button_gpio[0].data = priv; headset_button_gpio[0].desc = priv->gpio_headset_key; snd_jack_set_key(aries_headset.jack, SND_JACK_BTN_0, KEY_MEDIA); return snd_soc_jack_add_gpios(&aries_headset, ARRAY_SIZE(headset_button_gpio), headset_button_gpio); } static const struct snd_soc_pcm_stream baseband_params = { .formats = SNDRV_PCM_FMTBIT_S16_LE, .rate_min = 8000, .rate_max = 8000, .channels_min = 1, .channels_max = 1, }; static const struct snd_soc_pcm_stream bluetooth_params = { .formats = SNDRV_PCM_FMTBIT_S16_LE, .rate_min = 8000, .rate_max = 8000, .channels_min = 1, .channels_max = 2, }; static const struct snd_soc_dapm_widget aries_modem_widgets[] = { SND_SOC_DAPM_INPUT("Modem RX"), SND_SOC_DAPM_OUTPUT("Modem TX"), }; static const struct snd_soc_dapm_route aries_modem_routes[] = { { "Modem Capture", NULL, "Modem RX" }, { "Modem TX", NULL, "Modem Playback" }, }; static const struct snd_soc_component_driver aries_component = { .name = "aries-audio", .dapm_widgets = aries_modem_widgets, .num_dapm_widgets = ARRAY_SIZE(aries_modem_widgets), .dapm_routes = aries_modem_routes, .num_dapm_routes = ARRAY_SIZE(aries_modem_routes), .idle_bias_on = 1, .use_pmdown_time = 1, .endianness = 1, .non_legacy_dai_naming = 1, }; static struct snd_soc_dai_driver aries_ext_dai[] = { { .name = "Voice call", .playback = { .stream_name = "Modem Playback", .channels_min = 1, .channels_max = 1, .rate_min = 8000, .rate_max = 8000, .rates = SNDRV_PCM_RATE_8000, .formats = SNDRV_PCM_FMTBIT_S16_LE, }, .capture = { .stream_name = "Modem Capture", .channels_min = 1, .channels_max = 1, .rate_min = 8000, .rate_max = 8000, .rates = SNDRV_PCM_RATE_8000, .formats = SNDRV_PCM_FMTBIT_S16_LE, }, }, }; SND_SOC_DAILINK_DEFS(aif1, DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)), DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")), DAILINK_COMP_ARRAY(COMP_EMPTY())); SND_SOC_DAILINK_DEFS(baseband, DAILINK_COMP_ARRAY(COMP_CPU("Voice call")), DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif2"))); SND_SOC_DAILINK_DEFS(bluetooth, DAILINK_COMP_ARRAY(COMP_CPU("bt-sco-pcm")), DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif3"))); static struct snd_soc_dai_link aries_dai[] = { { .name = "WM8994 AIF1", .stream_name = "HiFi", .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM, .ops = &aries_ops, SND_SOC_DAILINK_REG(aif1), }, { .name = "WM8994 AIF2", .stream_name = "Baseband", .init = &aries_baseband_init, .params = &baseband_params, .ignore_suspend = 1, SND_SOC_DAILINK_REG(baseband), }, { .name = "WM8994 AIF3", .stream_name = "Bluetooth", .params = &bluetooth_params, .ignore_suspend = 1, SND_SOC_DAILINK_REG(bluetooth), }, }; static struct snd_soc_card aries_card = { .name = "ARIES", .owner = THIS_MODULE, .dai_link = aries_dai, .num_links = ARRAY_SIZE(aries_dai), .controls = aries_controls, .num_controls = ARRAY_SIZE(aries_controls), .dapm_widgets = aries_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(aries_dapm_widgets), .late_probe = aries_late_probe, }; static const struct aries_wm8994_variant fascinate4g_variant = { .modem_dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_IB_NF, .has_fm_radio = false, }; static const struct aries_wm8994_variant aries_variant = { .modem_dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF, .has_fm_radio = true, }; static const struct of_device_id samsung_wm8994_of_match[] = { { .compatible = "samsung,fascinate4g-wm8994", .data = &fascinate4g_variant, }, { .compatible = "samsung,aries-wm8994", .data = &aries_variant, }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match); static int aries_audio_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct device_node *cpu, *codec, *extcon_np; struct device *dev = &pdev->dev; struct snd_soc_card *card = &aries_card; struct aries_wm8994_data *priv; struct snd_soc_dai_link *dai_link; const struct of_device_id *match; int ret, i; if (!np) return -EINVAL; card->dev = dev; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; snd_soc_card_set_drvdata(card, priv); match = of_match_node(samsung_wm8994_of_match, np); priv->variant = match->data; /* Remove FM widget if not present */ if (!priv->variant->has_fm_radio) card->num_dapm_widgets--; priv->reg_main_micbias = devm_regulator_get(dev, "main-micbias"); if (IS_ERR(priv->reg_main_micbias)) { dev_err(dev, "Failed to get main micbias regulator\n"); return PTR_ERR(priv->reg_main_micbias); } priv->reg_headset_micbias = devm_regulator_get(dev, "headset-micbias"); if (IS_ERR(priv->reg_headset_micbias)) { dev_err(dev, "Failed to get headset micbias regulator\n"); return PTR_ERR(priv->reg_headset_micbias); } priv->gpio_earpath_sel = devm_gpiod_get(dev, "earpath-sel", GPIOD_OUT_LOW); if (IS_ERR(priv->gpio_earpath_sel)) { dev_err(dev, "Failed to get earpath selector gpio"); return PTR_ERR(priv->gpio_earpath_sel); } extcon_np = of_parse_phandle(np, "extcon", 0); priv->usb_extcon = extcon_find_edev_by_node(extcon_np); of_node_put(extcon_np); if (IS_ERR(priv->usb_extcon)) return dev_err_probe(dev, PTR_ERR(priv->usb_extcon), "Failed to get extcon device"); priv->adc = devm_iio_channel_get(dev, "headset-detect"); if (IS_ERR(priv->adc)) return dev_err_probe(dev, PTR_ERR(priv->adc), "Failed to get ADC channel"); if (priv->adc->channel->type != IIO_VOLTAGE) return -EINVAL; priv->gpio_headset_key = devm_gpiod_get(dev, "headset-key", GPIOD_IN); if (IS_ERR(priv->gpio_headset_key)) { dev_err(dev, "Failed to get headset key gpio"); return PTR_ERR(priv->gpio_headset_key); } priv->gpio_headset_detect = devm_gpiod_get(dev, "headset-detect", GPIOD_IN); if (IS_ERR(priv->gpio_headset_detect)) { dev_err(dev, "Failed to get headset detect gpio"); return PTR_ERR(priv->gpio_headset_detect); } /* Update card-name if provided through DT, else use default name */ snd_soc_of_parse_card_name(card, "model"); ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing"); if (ret < 0) { dev_err(dev, "Audio routing invalid/unspecified\n"); return ret; } aries_dai[1].dai_fmt = priv->variant->modem_dai_fmt; cpu = of_get_child_by_name(dev->of_node, "cpu"); if (!cpu) return -EINVAL; codec = of_get_child_by_name(dev->of_node, "codec"); if (!codec) { ret = -EINVAL; goto out; } for_each_card_prelinks(card, i, dai_link) { dai_link->codecs->of_node = of_parse_phandle(codec, "sound-dai", 0); if (!dai_link->codecs->of_node) { ret = -EINVAL; goto out; } } /* Set CPU and platform of_node for main DAI */ aries_dai[0].cpus->of_node = of_parse_phandle(cpu, "sound-dai", 0); if (!aries_dai[0].cpus->of_node) { ret = -EINVAL; goto out; } aries_dai[0].platforms->of_node = aries_dai[0].cpus->of_node; /* Set CPU of_node for BT DAI */ aries_dai[2].cpus->of_node = of_parse_phandle(cpu, "sound-dai", 1); if (!aries_dai[2].cpus->of_node) { ret = -EINVAL; goto out; } ret = devm_snd_soc_register_component(dev, &aries_component, aries_ext_dai, ARRAY_SIZE(aries_ext_dai)); if (ret < 0) { dev_err(dev, "Failed to register component: %d\n", ret); goto out; } ret = devm_snd_soc_register_card(dev, card); if (ret) dev_err(dev, "snd_soc_register_card() failed:%d\n", ret); out: of_node_put(cpu); of_node_put(codec); return ret; } static struct platform_driver aries_audio_driver = { .driver = { .name = "aries-audio-wm8994", .of_match_table = of_match_ptr(samsung_wm8994_of_match), .pm = &snd_soc_pm_ops, }, .probe = aries_audio_probe, }; module_platform_driver(aries_audio_driver); MODULE_DESCRIPTION("ALSA SoC ARIES WM8994"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:aries-audio-wm8994");