/* * bytcr_rt5651.c - ASoc Machine driver for Intel Byt CR platform * (derived from bytcr_rt5640.c) * * Copyright (C) 2015 Intel Corp * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * 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 #include #include #include #include #include #include "../../codecs/rt5651.h" #include "../atom/sst-atom-controls.h" #include "../common/sst-acpi.h" enum { BYT_RT5651_DMIC_MAP, BYT_RT5651_IN1_MAP, }; #define BYT_RT5651_MAP(quirk) ((quirk) & GENMASK(7, 0)) #define BYT_RT5651_DMIC_EN BIT(16) #define BYT_RT5651_MCLK_EN BIT(17) #define BYT_RT5651_MCLK_25MHZ BIT(18) struct byt_rt5651_private { struct clk *mclk; }; static unsigned long byt_rt5651_quirk = BYT_RT5651_DMIC_MAP | BYT_RT5651_DMIC_EN | BYT_RT5651_MCLK_EN; static void log_quirks(struct device *dev) { if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_DMIC_MAP) dev_info(dev, "quirk DMIC_MAP enabled"); if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_IN1_MAP) dev_info(dev, "quirk IN1_MAP enabled"); if (byt_rt5651_quirk & BYT_RT5651_DMIC_EN) dev_info(dev, "quirk DMIC enabled"); if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) dev_info(dev, "quirk MCLK_EN enabled"); if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ) dev_info(dev, "quirk MCLK_25MHZ enabled"); } #define BYT_CODEC_DAI1 "rt5651-aif1" 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_rt5651_private *priv = snd_soc_card_get_drvdata(card); int ret; codec_dai = snd_soc_card_get_codec_dai(card, BYT_CODEC_DAI1); 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 (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) { ret = clk_prepare_enable(priv->mclk); if (ret < 0) { dev_err(card->dev, "could not configure MCLK state"); return ret; } } ret = snd_soc_dai_set_sysclk(codec_dai, RT5651_SCLK_S_PLL1, 48000 * 512, SND_SOC_CLOCK_IN); } else { /* * Set codec clock source to internal clock before * turning off the platform clock. Codec needs clock * for Jack detection and button press */ ret = snd_soc_dai_set_sysclk(codec_dai, RT5651_SCLK_S_RCCLK, 48000 * 512, SND_SOC_CLOCK_IN); if (!ret) if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) clk_disable_unprepare(priv->mclk); } if (ret < 0) { dev_err(card->dev, "can't set codec sysclk: %d\n", ret); return ret; } return 0; } static const struct snd_soc_dapm_widget byt_rt5651_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), }; static const struct snd_soc_dapm_route byt_rt5651_audio_map[] = { {"Headphone", NULL, "Platform Clock"}, {"Headset Mic", NULL, "Platform Clock"}, {"Internal Mic", NULL, "Platform Clock"}, {"Speaker", NULL, "Platform Clock"}, {"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"}, {"Headset Mic", NULL, "micbias1"}, /* lowercase for rt5651 */ {"IN2P", NULL, "Headset Mic"}, {"Headphone", NULL, "HPOL"}, {"Headphone", NULL, "HPOR"}, {"Speaker", NULL, "LOUTL"}, {"Speaker", NULL, "LOUTR"}, }; static const struct snd_soc_dapm_route byt_rt5651_intmic_dmic_map[] = { {"DMIC L1", NULL, "Internal Mic"}, {"DMIC R1", NULL, "Internal Mic"}, }; static const struct snd_soc_dapm_route byt_rt5651_intmic_in1_map[] = { {"Internal Mic", NULL, "micbias1"}, {"IN1P", NULL, "Internal Mic"}, }; static const struct snd_kcontrol_new byt_rt5651_controls[] = { SOC_DAPM_PIN_SWITCH("Headphone"), SOC_DAPM_PIN_SWITCH("Headset Mic"), SOC_DAPM_PIN_SWITCH("Internal Mic"), SOC_DAPM_PIN_SWITCH("Speaker"), }; static int byt_rt5651_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; snd_soc_dai_set_bclk_ratio(codec_dai, 50); ret = snd_soc_dai_set_sysclk(codec_dai, RT5651_SCLK_S_PLL1, params_rate(params) * 512, SND_SOC_CLOCK_IN); if (ret < 0) { dev_err(rtd->dev, "can't set codec clock %d\n", ret); return ret; } if (!(byt_rt5651_quirk & BYT_RT5651_MCLK_EN)) { /* 2x25 bit slots on SSP2 */ ret = snd_soc_dai_set_pll(codec_dai, 0, RT5651_PLL1_S_BCLK1, params_rate(params) * 50, params_rate(params) * 512); } else { if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ) { ret = snd_soc_dai_set_pll(codec_dai, 0, RT5651_PLL1_S_MCLK, 25000000, params_rate(params) * 512); } else { ret = snd_soc_dai_set_pll(codec_dai, 0, RT5651_PLL1_S_MCLK, 19200000, params_rate(params) * 512); } } if (ret < 0) { dev_err(rtd->dev, "can't set codec pll: %d\n", ret); return ret; } return 0; } static int byt_rt5651_quirk_cb(const struct dmi_system_id *id) { byt_rt5651_quirk = (unsigned long)id->driver_data; return 1; } static const struct dmi_system_id byt_rt5651_quirk_table[] = { { .callback = byt_rt5651_quirk_cb, .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Circuitco"), DMI_MATCH(DMI_PRODUCT_NAME, "Minnowboard Max B3 PLATFORM"), }, .driver_data = (void *)(BYT_RT5651_DMIC_MAP | BYT_RT5651_DMIC_EN), }, {} }; static int byt_rt5651_init(struct snd_soc_pcm_runtime *runtime) { struct snd_soc_card *card = runtime->card; struct byt_rt5651_private *priv = snd_soc_card_get_drvdata(card); const struct snd_soc_dapm_route *custom_map; int num_routes; int ret; card->dapm.idle_bias_off = true; switch (BYT_RT5651_MAP(byt_rt5651_quirk)) { case BYT_RT5651_IN1_MAP: custom_map = byt_rt5651_intmic_in1_map; num_routes = ARRAY_SIZE(byt_rt5651_intmic_in1_map); break; default: custom_map = byt_rt5651_intmic_dmic_map; num_routes = ARRAY_SIZE(byt_rt5651_intmic_dmic_map); } ret = snd_soc_dapm_add_routes(&card->dapm, custom_map, num_routes); if (ret) return ret; ret = snd_soc_add_card_controls(card, byt_rt5651_controls, ARRAY_SIZE(byt_rt5651_controls)); if (ret) { dev_err(card->dev, "unable to add card controls\n"); return ret; } snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone"); snd_soc_dapm_ignore_suspend(&card->dapm, "Speaker"); if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) { /* * 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); if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ) ret = clk_set_rate(priv->mclk, 25000000); else ret = clk_set_rate(priv->mclk, 19200000); if (ret) dev_err(card->dev, "unable to set MCLK rate\n"); } return ret; } static const struct snd_soc_pcm_stream byt_rt5651_dai_params = { .formats = SNDRV_PCM_FMTBIT_S24_LE, .rate_min = 48000, .rate_max = 48000, .channels_min = 2, .channels_max = 2, }; static int byt_rt5651_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, override config * with explicit setting to I2S 2ch 24-bit. The word length is set with * dai_set_tdm_slot() since there is no other API exposed */ ret = snd_soc_dai_set_fmt(rtd->cpu_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS ); if (ret < 0) { dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret); return ret; } ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 24); if (ret < 0) { dev_err(rtd->dev, "can't set I2S config, err %d\n", ret); return ret; } return 0; } static const unsigned int rates_48000[] = { 48000, }; static const struct snd_pcm_hw_constraint_list constraints_48000 = { .count = ARRAY_SIZE(rates_48000), .list = rates_48000, }; static int byt_rt5651_aif1_startup(struct snd_pcm_substream *substream) { return snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &constraints_48000); } static const struct snd_soc_ops byt_rt5651_aif1_ops = { .startup = byt_rt5651_aif1_startup, }; static const struct snd_soc_ops byt_rt5651_be_ssp2_ops = { .hw_params = byt_rt5651_aif1_hw_params, }; static struct snd_soc_dai_link byt_rt5651_dais[] = { [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 = &byt_rt5651_aif1_ops, }, [MERR_DPCM_DEEP_BUFFER] = { .name = "Deep-Buffer Audio Port", .stream_name = "Deep-Buffer Audio", .cpu_dai_name = "deepbuffer-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, .ops = &byt_rt5651_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", }, /* CODEC<->CODEC link */ /* back ends */ { .name = "SSP2-Codec", .id = 1, .cpu_dai_name = "ssp2-port", .platform_name = "sst-mfld-platform", .no_pcm = 1, .codec_dai_name = "rt5651-aif1", .codec_name = "i2c-10EC5651:00", .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS, .be_hw_params_fixup = byt_rt5651_codec_fixup, .ignore_suspend = 1, .nonatomic = true, .dpcm_playback = 1, .dpcm_capture = 1, .init = byt_rt5651_init, .ops = &byt_rt5651_be_ssp2_ops, }, }; /* SoC card */ static struct snd_soc_card byt_rt5651_card = { .name = "bytcr-rt5651", .owner = THIS_MODULE, .dai_link = byt_rt5651_dais, .num_links = ARRAY_SIZE(byt_rt5651_dais), .dapm_widgets = byt_rt5651_widgets, .num_dapm_widgets = ARRAY_SIZE(byt_rt5651_widgets), .dapm_routes = byt_rt5651_audio_map, .num_dapm_routes = ARRAY_SIZE(byt_rt5651_audio_map), .fully_routed = true, }; static char byt_rt5651_codec_name[16]; /* i2c-:00 with HID being 8 chars */ static int snd_byt_rt5651_mc_probe(struct platform_device *pdev) { struct byt_rt5651_private *priv; struct sst_acpi_mach *mach; const char *i2c_name = NULL; int ret_val = 0; int dai_index; int i; priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC); if (!priv) return -ENOMEM; /* register the soc card */ byt_rt5651_card.dev = &pdev->dev; mach = byt_rt5651_card.dev->platform_data; snd_soc_card_set_drvdata(&byt_rt5651_card, priv); /* fix index of codec dai */ dai_index = MERR_DPCM_COMPR + 1; for (i = 0; i < ARRAY_SIZE(byt_rt5651_dais); i++) { if (!strcmp(byt_rt5651_dais[i].codec_name, "i2c-10EC5651:00")) { dai_index = i; break; } } /* fixup codec name based on HID */ i2c_name = sst_acpi_find_name_from_hid(mach->id); if (i2c_name) { snprintf(byt_rt5651_codec_name, sizeof(byt_rt5651_codec_name), "%s%s", "i2c-", i2c_name); byt_rt5651_dais[dai_index].codec_name = byt_rt5651_codec_name; } /* check quirks before creating card */ dmi_check_system(byt_rt5651_quirk_table); log_quirks(&pdev->dev); if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) { priv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3"); if (IS_ERR(priv->mclk)) { dev_err(&pdev->dev, "Failed to get MCLK from pmc_plt_clk_3: %ld\n", PTR_ERR(priv->mclk)); /* * Fall back to bit clock usage for -ENOENT (clock not * available likely due to missing dependencies), bail * for all other errors, including -EPROBE_DEFER */ if (ret_val != -ENOENT) return ret_val; byt_rt5651_quirk &= ~BYT_RT5651_MCLK_EN; } } ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_rt5651_card); if (ret_val) { dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n", ret_val); return ret_val; } platform_set_drvdata(pdev, &byt_rt5651_card); return ret_val; } static struct platform_driver snd_byt_rt5651_mc_driver = { .driver = { .name = "bytcr_rt5651", }, .probe = snd_byt_rt5651_mc_probe, }; module_platform_driver(snd_byt_rt5651_mc_driver); MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver for RT5651"); MODULE_AUTHOR("Pierre-Louis Bossart "); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:bytcr_rt5651");