/* * 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 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ #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" static struct snd_soc_jack cht_bsw_headset; /* 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 inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card) { int i; for (i = 0; i < card->num_rtd; i++) { struct snd_soc_pcm_runtime *rtd; rtd = card->rtd + i; if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI, strlen(CHT_CODEC_DAI))) return rtd->codec_dai; } return NULL; } 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; int ret; codec_dai = cht_get_codec_dai(card); 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)) { /* 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); } 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 int cht_codec_init(struct snd_soc_pcm_runtime *runtime) { int ret; struct snd_soc_dai *codec_dai = runtime->codec_dai; struct snd_soc_codec *codec = codec_dai->codec; /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */ ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24); if (ret < 0) { dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret); return ret; } /* 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(codec, 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, &cht_bsw_headset, cht_bsw_headset_pins, ARRAY_SIZE(cht_bsw_headset_pins)); if (ret) return ret; rt5670_set_jack_detect(codec, &cht_bsw_headset); 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); /* 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); return 0; } static unsigned int rates_48000[] = { 48000, }; static struct snd_pcm_hw_constraint_list constraints_48000 = { .count = ARRAY_SIZE(rates_48000), .list = rates_48000, }; static int cht_aif1_startup(struct snd_pcm_substream *substream) { return snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &constraints_48000); } static struct snd_soc_ops cht_aif1_ops = { .startup = cht_aif1_startup, }; static struct snd_soc_ops cht_be_ssp2_ops = { .hw_params = cht_aif1_hw_params, }; static struct snd_soc_dai_link cht_dailink[] = { /* Front End DAI links */ [MERR_DPCM_AUDIO] = { .name = "Audio Port", .stream_name = "Audio", .cpu_dai_name = "media-cpu-dai", .codec_dai_name = "snd-soc-dummy-dai", .codec_name = "snd-soc-dummy", .platform_name = "sst-mfld-platform", .nonatomic = true, .dynamic = 1, .dpcm_playback = 1, .dpcm_capture = 1, .ops = &cht_aif1_ops, }, [MERR_DPCM_COMPR] = { .name = "Compressed Port", .stream_name = "Compress", .cpu_dai_name = "compress-cpu-dai", .codec_dai_name = "snd-soc-dummy-dai", .codec_name = "snd-soc-dummy", .platform_name = "sst-mfld-platform", }, /* Back End DAI links */ { /* SSP2 - Codec */ .name = "SSP2-Codec", .be_id = 1, .cpu_dai_name = "ssp2-port", .platform_name = "sst-mfld-platform", .no_pcm = 1, .nonatomic = true, .codec_dai_name = "rt5670-aif1", .codec_name = "i2c-10EC5670:00", .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_CBS_CFS, .init = cht_codec_init, .be_hw_params_fixup = cht_codec_fixup, .dpcm_playback = 1, .dpcm_capture = 1, .ops = &cht_be_ssp2_ops, }, }; static int cht_suspend_pre(struct snd_soc_card *card) { struct snd_soc_codec *codec; list_for_each_entry(codec, &card->codec_dev_list, card_list) { if (!strcmp(codec->component.name, "i2c-10EC5670:00")) { dev_dbg(codec->dev, "disabling jack detect before going to suspend.\n"); rt5670_jack_suspend(codec); break; } } return 0; } static int cht_resume_post(struct snd_soc_card *card) { struct snd_soc_codec *codec; list_for_each_entry(codec, &card->codec_dev_list, card_list) { if (!strcmp(codec->component.name, "i2c-10EC5670:00")) { dev_dbg(codec->dev, "enabling jack detect for resume.\n"); rt5670_jack_resume(codec); break; } } return 0; } /* SoC card */ static struct snd_soc_card snd_soc_card_cht = { .name = "cherrytrailcraudio", .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, }; static int snd_cht_mc_probe(struct platform_device *pdev) { int ret_val = 0; /* register the soc card */ snd_soc_card_cht.dev = &pdev->dev; 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");