// SPDX-License-Identifier: GPL-2.0-only /* * cht_bsw_rt5672.c - ASoc Machine driver for Intel Cherryview-based platforms * Cherrytrail and Braswell, with RT5672 codec. * * Copyright (C) 2014 Intel Corp * Author: Subhransu S. Prusty * Mengdong Lin */ #include #include #include #include #include #include #include #include #include #include #include #include "../../codecs/rt5670.h" #include "../atom/sst-atom-controls.h" /* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */ #define CHT_PLAT_CLK_3_HZ 19200000 #define CHT_CODEC_DAI "rt5670-aif1" struct cht_mc_private { struct snd_soc_jack headset; char codec_name[SND_ACPI_I2C_ID_LEN]; struct clk *mclk; }; /* Headset jack detection DAPM pins */ static struct snd_soc_jack_pin cht_bsw_headset_pins[] = { { .pin = "Headset Mic", .mask = SND_JACK_MICROPHONE, }, { .pin = "Headphone", .mask = SND_JACK_HEADPHONE, }, }; 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 cht_mc_private *ctx = snd_soc_card_get_drvdata(card); int ret; codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI); if (!codec_dai) { dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n"); return -EIO; } if (SND_SOC_DAPM_EVENT_ON(event)) { if (ctx->mclk) { ret = clk_prepare_enable(ctx->mclk); if (ret < 0) { dev_err(card->dev, "could not configure MCLK state"); return ret; } } /* set codec PLL source to the 19.2MHz platform clock (MCLK) */ ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, CHT_PLAT_CLK_3_HZ, 48000 * 512); if (ret < 0) { dev_err(card->dev, "can't set codec pll: %d\n", ret); return ret; } /* set codec sysclk source to PLL */ ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, 48000 * 512, SND_SOC_CLOCK_IN); if (ret < 0) { dev_err(card->dev, "can't set codec sysclk: %d\n", ret); return ret; } } else { /* Set codec sysclk source to its internal clock because codec * PLL will be off when idle and MCLK will also be off by ACPI * when codec is runtime suspended. Codec needs clock for jack * detection and button press. */ snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK, 48000 * 512, SND_SOC_CLOCK_IN); if (ctx->mclk) clk_disable_unprepare(ctx->mclk); } return 0; } static const struct snd_soc_dapm_widget cht_dapm_widgets[] = { SND_SOC_DAPM_HP("Headphone", NULL), SND_SOC_DAPM_MIC("Headset Mic", NULL), SND_SOC_DAPM_MIC("Int Mic", NULL), SND_SOC_DAPM_SPK("Ext Spk", 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), }; static const struct snd_soc_dapm_route cht_audio_map[] = { {"IN1P", NULL, "Headset Mic"}, {"IN1N", NULL, "Headset Mic"}, {"DMIC L1", NULL, "Int Mic"}, {"DMIC R1", NULL, "Int Mic"}, {"Headphone", NULL, "HPOL"}, {"Headphone", NULL, "HPOR"}, {"Ext Spk", NULL, "SPOLP"}, {"Ext Spk", NULL, "SPOLN"}, {"Ext Spk", NULL, "SPORP"}, {"Ext Spk", NULL, "SPORN"}, {"AIF1 Playback", NULL, "ssp2 Tx"}, {"ssp2 Tx", NULL, "codec_out0"}, {"ssp2 Tx", NULL, "codec_out1"}, {"codec_in0", NULL, "ssp2 Rx"}, {"codec_in1", NULL, "ssp2 Rx"}, {"ssp2 Rx", NULL, "AIF1 Capture"}, {"Headphone", NULL, "Platform Clock"}, {"Headset Mic", NULL, "Platform Clock"}, {"Int Mic", NULL, "Platform Clock"}, {"Ext Spk", NULL, "Platform Clock"}, }; static const struct snd_kcontrol_new cht_mc_controls[] = { SOC_DAPM_PIN_SWITCH("Headphone"), SOC_DAPM_PIN_SWITCH("Headset Mic"), SOC_DAPM_PIN_SWITCH("Int Mic"), SOC_DAPM_PIN_SWITCH("Ext Spk"), }; static int cht_aif1_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->codec_dai; int ret; /* set codec PLL source to the 19.2MHz platform clock (MCLK) */ ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, CHT_PLAT_CLK_3_HZ, params_rate(params) * 512); if (ret < 0) { dev_err(rtd->dev, "can't set codec pll: %d\n", ret); return ret; } /* set codec sysclk source to PLL */ ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, params_rate(params) * 512, SND_SOC_CLOCK_IN); if (ret < 0) { dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret); return ret; } return 0; } static const struct acpi_gpio_params headset_gpios = { 0, 0, false }; static const struct acpi_gpio_mapping cht_rt5672_gpios[] = { { "headset-gpios", &headset_gpios, 1 }, {}, }; static int cht_codec_init(struct snd_soc_pcm_runtime *runtime) { int ret; struct snd_soc_dai *codec_dai = runtime->codec_dai; struct snd_soc_component *component = codec_dai->component; struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card); if (devm_acpi_dev_add_driver_gpios(component->dev, cht_rt5672_gpios)) dev_warn(runtime->dev, "Unable to add GPIO mapping table\n"); /* Select codec ASRC clock source to track I2S1 clock, because codec * is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot * be supported by RT5672. Otherwise, ASRC will be disabled and cause * noise. */ rt5670_sel_asrc_clk_src(component, RT5670_DA_STEREO_FILTER | RT5670_DA_MONO_L_FILTER | RT5670_DA_MONO_R_FILTER | RT5670_AD_STEREO_FILTER | RT5670_AD_MONO_L_FILTER | RT5670_AD_MONO_R_FILTER, RT5670_CLK_SEL_I2S1_ASRC); ret = snd_soc_card_jack_new(runtime->card, "Headset", SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2, &ctx->headset, cht_bsw_headset_pins, ARRAY_SIZE(cht_bsw_headset_pins)); if (ret) return ret; snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_1, KEY_VOLUMEUP); snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN); rt5670_set_jack_detect(component, &ctx->headset); if (ctx->mclk) { /* * 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(ctx->mclk); if (!ret) clk_disable_unprepare(ctx->mclk); ret = clk_set_rate(ctx->mclk, CHT_PLAT_CLK_3_HZ); if (ret) { dev_err(runtime->dev, "unable to set MCLK rate\n"); return ret; } } return 0; } static int cht_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 covert the FE rate to 48k, stereo, 24bits */ rate->min = rate->max = 48000; channels->min = channels->max = 2; /* set SSP2 to 24-bit */ params_set_format(params, SNDRV_PCM_FORMAT_S24_LE); /* * Default mode for SSP configuration is TDM 4 slot */ ret = snd_soc_dai_set_fmt(rtd->codec_dai, SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_CBS_CFS); if (ret < 0) { dev_err(rtd->dev, "can't set format to TDM %d\n", ret); return ret; } /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */ ret = snd_soc_dai_set_tdm_slot(rtd->codec_dai, 0xF, 0xF, 4, 24); if (ret < 0) { dev_err(rtd->dev, "can't set codec TDM slot %d\n", ret); return ret; } return 0; } static int cht_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 cht_aif1_ops = { .startup = cht_aif1_startup, }; static const struct snd_soc_ops cht_be_ssp2_ops = { .hw_params = cht_aif1_hw_params, }; 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(ssp2_port, DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port"))); SND_SOC_DAILINK_DEF(ssp2_codec, DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC5670:00", "rt5670-aif1"))); SND_SOC_DAILINK_DEF(platform, DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform"))); static struct snd_soc_dai_link cht_dailink[] = { /* Front End DAI links */ [MERR_DPCM_AUDIO] = { .name = "Audio Port", .stream_name = "Audio", .nonatomic = true, .dynamic = 1, .dpcm_playback = 1, .dpcm_capture = 1, .ops = &cht_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 = &cht_aif1_ops, SND_SOC_DAILINK_REG(deepbuffer, dummy, platform), }, /* Back End DAI links */ { /* SSP2 - Codec */ .name = "SSP2-Codec", .id = 0, .no_pcm = 1, .nonatomic = true, .init = cht_codec_init, .be_hw_params_fixup = cht_codec_fixup, .dpcm_playback = 1, .dpcm_capture = 1, .ops = &cht_be_ssp2_ops, SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform), }, }; static int cht_suspend_pre(struct snd_soc_card *card) { struct snd_soc_component *component; struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card); for_each_card_components(card, component) { if (!strncmp(component->name, ctx->codec_name, sizeof(ctx->codec_name))) { dev_dbg(component->dev, "disabling jack detect before going to suspend.\n"); rt5670_jack_suspend(component); break; } } return 0; } static int cht_resume_post(struct snd_soc_card *card) { struct snd_soc_component *component; struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card); for_each_card_components(card, component) { if (!strncmp(component->name, ctx->codec_name, sizeof(ctx->codec_name))) { dev_dbg(component->dev, "enabling jack detect for resume.\n"); rt5670_jack_resume(component); break; } } return 0; } /* SoC card */ static struct snd_soc_card snd_soc_card_cht = { .name = "cht-bsw-rt5672", .owner = THIS_MODULE, .dai_link = cht_dailink, .num_links = ARRAY_SIZE(cht_dailink), .dapm_widgets = cht_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets), .dapm_routes = cht_audio_map, .num_dapm_routes = ARRAY_SIZE(cht_audio_map), .controls = cht_mc_controls, .num_controls = ARRAY_SIZE(cht_mc_controls), .suspend_pre = cht_suspend_pre, .resume_post = cht_resume_post, }; #define RT5672_I2C_DEFAULT "i2c-10EC5670:00" static int snd_cht_mc_probe(struct platform_device *pdev) { int ret_val = 0; struct cht_mc_private *drv; struct snd_soc_acpi_mach *mach = pdev->dev.platform_data; const char *platform_name; struct acpi_device *adev; int i; drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL); if (!drv) return -ENOMEM; strcpy(drv->codec_name, RT5672_I2C_DEFAULT); /* fixup codec name based on HID */ adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1); if (adev) { snprintf(drv->codec_name, sizeof(drv->codec_name), "i2c-%s", acpi_dev_name(adev)); put_device(&adev->dev); for (i = 0; i < ARRAY_SIZE(cht_dailink); i++) { if (!strcmp(cht_dailink[i].codecs->name, RT5672_I2C_DEFAULT)) { cht_dailink[i].codecs->name = drv->codec_name; break; } } } /* override plaform name, if required */ snd_soc_card_cht.dev = &pdev->dev; platform_name = mach->mach_params.platform; ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht, platform_name); if (ret_val) return ret_val; drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3"); if (IS_ERR(drv->mclk)) { dev_err(&pdev->dev, "Failed to get MCLK from pmc_plt_clk_3: %ld\n", PTR_ERR(drv->mclk)); return PTR_ERR(drv->mclk); } snd_soc_card_set_drvdata(&snd_soc_card_cht, drv); /* register the soc card */ ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht); if (ret_val) { dev_err(&pdev->dev, "snd_soc_register_card failed %d\n", ret_val); return ret_val; } platform_set_drvdata(pdev, &snd_soc_card_cht); return ret_val; } static struct platform_driver snd_cht_mc_driver = { .driver = { .name = "cht-bsw-rt5672", }, .probe = snd_cht_mc_probe, }; module_platform_driver(snd_cht_mc_driver); MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver"); MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:cht-bsw-rt5672");