// SPDX-License-Identifier: GPL-2.0-only /* * bytcr_wm5102.c - ASoc Machine driver for Intel Baytrail platforms with a * Wolfson Microelectronics WM5102 codec * * Copyright (C) 2020 Hans de Goede * Loosely based on bytcr_rt5640.c which is: * Copyright (C) 2014-2020 Intel Corp * Author: Subhransu S. Prusty */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../../codecs/wm5102.h" #include "../atom/sst-atom-controls.h" #define MCLK_FREQ 25000000 #define WM5102_MAX_SYSCLK_4K 49152000 /* max sysclk for 4K family */ #define WM5102_MAX_SYSCLK_11025 45158400 /* max sysclk for 11.025K family */ struct byt_wm5102_private { struct snd_soc_jack jack; struct clk *mclk; struct gpio_desc *spkvdd_en_gpio; }; static int byt_wm5102_spkvdd_power_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_card *card = w->dapm->card; struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card); gpiod_set_value_cansleep(priv->spkvdd_en_gpio, !!SND_SOC_DAPM_EVENT_ON(event)); return 0; } static int byt_wm5102_prepare_and_enable_pll1(struct snd_soc_dai *codec_dai, int rate) { struct snd_soc_component *codec_component = codec_dai->component; int sr_mult = ((rate % 4000) == 0) ? (WM5102_MAX_SYSCLK_4K / rate) : (WM5102_MAX_SYSCLK_11025 / rate); int ret; /* Reset FLL1 */ snd_soc_dai_set_pll(codec_dai, WM5102_FLL1_REFCLK, ARIZONA_FLL_SRC_NONE, 0, 0); snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0); /* Configure the FLL1 PLL before selecting it */ ret = snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_CLK_SRC_MCLK1, MCLK_FREQ, rate * sr_mult); if (ret) { dev_err(codec_component->dev, "Error setting PLL: %d\n", ret); return ret; } ret = snd_soc_component_set_sysclk(codec_component, ARIZONA_CLK_SYSCLK, ARIZONA_CLK_SRC_FLL1, rate * sr_mult, SND_SOC_CLOCK_IN); if (ret) { dev_err(codec_component->dev, "Error setting SYSCLK: %d\n", ret); return ret; } ret = snd_soc_dai_set_sysclk(codec_dai, ARIZONA_CLK_SYSCLK, rate * 512, SND_SOC_CLOCK_IN); if (ret) { dev_err(codec_component->dev, "Error setting clock: %d\n", ret); return ret; } return 0; } static int platform_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { struct snd_soc_dapm_context *dapm = w->dapm; struct snd_soc_card *card = dapm->card; struct snd_soc_dai *codec_dai; struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card); int ret; codec_dai = snd_soc_card_get_codec_dai(card, "wm5102-aif1"); if (!codec_dai) { dev_err(card->dev, "Error codec DAI not found\n"); return -EIO; } if (SND_SOC_DAPM_EVENT_ON(event)) { ret = clk_prepare_enable(priv->mclk); if (ret) { dev_err(card->dev, "Error enabling MCLK: %d\n", ret); return ret; } ret = byt_wm5102_prepare_and_enable_pll1(codec_dai, 48000); if (ret) { dev_err(card->dev, "Error setting codec sysclk: %d\n", ret); return ret; } } else { /* * The WM5102 has a separate 32KHz clock for jack-detect * so we can disable the PLL, followed by disabling the * platform clock which is the source-clock for the PLL. */ snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0); clk_disable_unprepare(priv->mclk); } return 0; } static const struct snd_soc_dapm_widget byt_wm5102_widgets[] = { SND_SOC_DAPM_HP("Headphone", NULL), SND_SOC_DAPM_MIC("Headset Mic", NULL), SND_SOC_DAPM_MIC("Internal Mic", NULL), SND_SOC_DAPM_SPK("Speaker", NULL), SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, platform_clock_control, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("Speaker VDD", SND_SOC_NOPM, 0, 0, byt_wm5102_spkvdd_power_event, SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU), }; static const struct snd_soc_dapm_route byt_wm5102_audio_map[] = { {"Headphone", NULL, "Platform Clock"}, {"Headset Mic", NULL, "Platform Clock"}, {"Internal Mic", NULL, "Platform Clock"}, {"Speaker", NULL, "Platform Clock"}, {"Speaker", NULL, "SPKOUTLP"}, {"Speaker", NULL, "SPKOUTLN"}, {"Speaker", NULL, "SPKOUTRP"}, {"Speaker", NULL, "SPKOUTRN"}, {"Speaker", NULL, "Speaker VDD"}, {"Headphone", NULL, "HPOUT1L"}, {"Headphone", NULL, "HPOUT1R"}, {"Internal Mic", NULL, "MICBIAS3"}, {"IN3L", NULL, "Internal Mic"}, /* * The Headset Mix uses MICBIAS1 or 2 depending on if a CTIA/OMTP Headset * is connected, as the MICBIAS is applied after the CTIA/OMTP cross-switch. */ {"Headset Mic", NULL, "MICBIAS1"}, {"Headset Mic", NULL, "MICBIAS2"}, {"IN1L", NULL, "Headset Mic"}, {"AIF1 Playback", NULL, "ssp0 Tx"}, {"ssp0 Tx", NULL, "modem_out"}, {"modem_in", NULL, "ssp0 Rx"}, {"ssp0 Rx", NULL, "AIF1 Capture"}, }; static const struct snd_kcontrol_new byt_wm5102_controls[] = { SOC_DAPM_PIN_SWITCH("Headphone"), SOC_DAPM_PIN_SWITCH("Headset Mic"), SOC_DAPM_PIN_SWITCH("Internal Mic"), SOC_DAPM_PIN_SWITCH("Speaker"), }; static struct snd_soc_jack_pin byt_wm5102_pins[] = { { .pin = "Headphone", .mask = SND_JACK_HEADPHONE, }, { .pin = "Headset Mic", .mask = SND_JACK_MICROPHONE, }, }; static int byt_wm5102_init(struct snd_soc_pcm_runtime *runtime) { struct snd_soc_card *card = runtime->card; struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card); struct snd_soc_component *component = asoc_rtd_to_codec(runtime, 0)->component; int ret, jack_type; card->dapm.idle_bias_off = true; ret = snd_soc_add_card_controls(card, byt_wm5102_controls, ARRAY_SIZE(byt_wm5102_controls)); if (ret) { dev_err(card->dev, "Error adding card controls: %d\n", ret); return ret; } /* * The firmware might enable the clock at boot (this information * may or may not be reflected in the enable clock register). * To change the rate we must disable the clock first to cover these * cases. Due to common clock framework restrictions that do not allow * to disable a clock that has not been enabled, we need to enable * the clock first. */ ret = clk_prepare_enable(priv->mclk); if (!ret) clk_disable_unprepare(priv->mclk); ret = clk_set_rate(priv->mclk, MCLK_FREQ); if (ret) { dev_err(card->dev, "Error setting MCLK rate: %d\n", ret); return ret; } jack_type = ARIZONA_JACK_MASK | SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2 | SND_JACK_BTN_3; ret = snd_soc_card_jack_new_pins(card, "Headset", jack_type, &priv->jack, byt_wm5102_pins, ARRAY_SIZE(byt_wm5102_pins)); if (ret) { dev_err(card->dev, "Error creating jack: %d\n", ret); return ret; } snd_soc_component_set_jack(component, &priv->jack, NULL); return 0; } static int byt_wm5102_codec_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) { struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); int ret; /* The DSP will convert the FE rate to 48k, stereo */ rate->min = 48000; rate->max = 48000; channels->min = 2; channels->max = 2; /* set SSP0 to 16-bit */ params_set_format(params, SNDRV_PCM_FORMAT_S16_LE); /* * Default mode for SSP configuration is TDM 4 slot, override config * with explicit setting to I2S 2ch 16-bit. The word length is set with * dai_set_tdm_slot() since there is no other API exposed */ ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0), SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_BP_FP); if (ret) { dev_err(rtd->dev, "Error setting format to I2S: %d\n", ret); return ret; } ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 16); if (ret) { dev_err(rtd->dev, "Error setting I2S config: %d\n", ret); return ret; } return 0; } static int byt_wm5102_aif1_startup(struct snd_pcm_substream *substream) { return snd_pcm_hw_constraint_single(substream->runtime, SNDRV_PCM_HW_PARAM_RATE, 48000); } static const struct snd_soc_ops byt_wm5102_aif1_ops = { .startup = byt_wm5102_aif1_startup, }; SND_SOC_DAILINK_DEF(dummy, DAILINK_COMP_ARRAY(COMP_DUMMY())); SND_SOC_DAILINK_DEF(media, DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai"))); SND_SOC_DAILINK_DEF(deepbuffer, DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai"))); SND_SOC_DAILINK_DEF(ssp0_port, DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port"))); SND_SOC_DAILINK_DEF(ssp0_codec, DAILINK_COMP_ARRAY(COMP_CODEC( /* * Note there is no need to overwrite the codec-name as is done in * other bytcr machine drivers, because the codec is a MFD child-dev. */ "wm5102-codec", "wm5102-aif1"))); SND_SOC_DAILINK_DEF(platform, DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform"))); static struct snd_soc_dai_link byt_wm5102_dais[] = { [MERR_DPCM_AUDIO] = { .name = "Baytrail Audio Port", .stream_name = "Baytrail Audio", .nonatomic = true, .dynamic = 1, .dpcm_playback = 1, .dpcm_capture = 1, .ops = &byt_wm5102_aif1_ops, SND_SOC_DAILINK_REG(media, dummy, platform), }, [MERR_DPCM_DEEP_BUFFER] = { .name = "Deep-Buffer Audio Port", .stream_name = "Deep-Buffer Audio", .nonatomic = true, .dynamic = 1, .dpcm_playback = 1, .ops = &byt_wm5102_aif1_ops, SND_SOC_DAILINK_REG(deepbuffer, dummy, platform), }, /* back ends */ { /* * This must be named SSP2-Codec even though this machine driver * always uses SSP0. Most machine drivers support both and dynamically * update the dailink to point to SSP0 or SSP2, while keeping the name * as "SSP2-Codec". The SOF tplg files hardcode the "SSP2-Codec" even * in the byt-foo-ssp0.tplg versions because the other machine-drivers * use "SSP2-Codec" even when SSP0 is used. */ .name = "SSP2-Codec", .id = 0, .no_pcm = 1, .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC, .be_hw_params_fixup = byt_wm5102_codec_fixup, .dpcm_playback = 1, .dpcm_capture = 1, .init = byt_wm5102_init, SND_SOC_DAILINK_REG(ssp0_port, ssp0_codec, platform), }, }; /* use space before codec name to simplify card ID, and simplify driver name */ #define SOF_CARD_NAME "bytcht wm5102" /* card name will be 'sof-bytcht wm5102' */ #define SOF_DRIVER_NAME "SOF" #define CARD_NAME "bytcr-wm5102" #define DRIVER_NAME NULL /* card name will be used for driver name */ /* SoC card */ static struct snd_soc_card byt_wm5102_card = { .owner = THIS_MODULE, .dai_link = byt_wm5102_dais, .num_links = ARRAY_SIZE(byt_wm5102_dais), .dapm_widgets = byt_wm5102_widgets, .num_dapm_widgets = ARRAY_SIZE(byt_wm5102_widgets), .dapm_routes = byt_wm5102_audio_map, .num_dapm_routes = ARRAY_SIZE(byt_wm5102_audio_map), .fully_routed = true, }; static int snd_byt_wm5102_mc_probe(struct platform_device *pdev) { char codec_name[SND_ACPI_I2C_ID_LEN]; struct device *dev = &pdev->dev; struct byt_wm5102_private *priv; struct snd_soc_acpi_mach *mach; const char *platform_name; struct acpi_device *adev; struct device *codec_dev; bool sof_parent; int ret; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; /* Get MCLK */ priv->mclk = devm_clk_get(dev, "pmc_plt_clk_3"); if (IS_ERR(priv->mclk)) return dev_err_probe(dev, PTR_ERR(priv->mclk), "getting pmc_plt_clk_3\n"); /* * Get speaker VDD enable GPIO: * 1. Get codec-device-name * 2. Get codec-device * 3. Get GPIO from codec-device */ mach = dev->platform_data; adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1); if (!adev) { dev_err(dev, "Error cannot find acpi-dev for codec\n"); return -ENOENT; } snprintf(codec_name, sizeof(codec_name), "spi-%s", acpi_dev_name(adev)); codec_dev = bus_find_device_by_name(&spi_bus_type, NULL, codec_name); acpi_dev_put(adev); if (!codec_dev) return -EPROBE_DEFER; /* Note no devm_ here since we call gpiod_get on codec_dev rather then dev */ priv->spkvdd_en_gpio = gpiod_get(codec_dev, "wlf,spkvdd-ena", GPIOD_OUT_LOW); put_device(codec_dev); if (IS_ERR(priv->spkvdd_en_gpio)) { ret = PTR_ERR(priv->spkvdd_en_gpio); /* * The spkvdd gpio-lookup is registered by: drivers/mfd/arizona-spi.c, * so -ENOENT means that arizona-spi hasn't probed yet. */ if (ret == -ENOENT) ret = -EPROBE_DEFER; return dev_err_probe(dev, ret, "getting spkvdd-GPIO\n"); } /* override platform name, if required */ byt_wm5102_card.dev = dev; platform_name = mach->mach_params.platform; ret = snd_soc_fixup_dai_links_platform_name(&byt_wm5102_card, platform_name); if (ret) goto out_put_gpio; /* set card and driver name and pm-ops */ sof_parent = snd_soc_acpi_sof_parent(dev); if (sof_parent) { byt_wm5102_card.name = SOF_CARD_NAME; byt_wm5102_card.driver_name = SOF_DRIVER_NAME; dev->driver->pm = &snd_soc_pm_ops; } else { byt_wm5102_card.name = CARD_NAME; byt_wm5102_card.driver_name = DRIVER_NAME; } snd_soc_card_set_drvdata(&byt_wm5102_card, priv); ret = devm_snd_soc_register_card(dev, &byt_wm5102_card); if (ret) { dev_err_probe(dev, ret, "registering card\n"); goto out_put_gpio; } platform_set_drvdata(pdev, &byt_wm5102_card); return 0; out_put_gpio: gpiod_put(priv->spkvdd_en_gpio); return ret; } static int snd_byt_wm5102_mc_remove(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card); gpiod_put(priv->spkvdd_en_gpio); return 0; } static struct platform_driver snd_byt_wm5102_mc_driver = { .driver = { .name = "bytcr_wm5102", }, .probe = snd_byt_wm5102_mc_probe, .remove = snd_byt_wm5102_mc_remove, }; module_platform_driver(snd_byt_wm5102_mc_driver); MODULE_DESCRIPTION("ASoC Baytrail with WM5102 codec machine driver"); MODULE_AUTHOR("Hans de Goede "); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:bytcr_wm5102");