intel/boards/cht_bsw_nau8824.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  *  cht-bsw-nau8824.c - ASoc Machine driver for Intel Cherryview-based
0004  *          platforms Cherrytrail and Braswell, with nau8824 codec.
0005  *
0006  *  Copyright (C) 2018 Intel Corp
0007  *  Copyright (C) 2018 Nuvoton Technology Corp
0008  *
0009  *  Author: Wang, Joseph C <joequant@gmail.com>
0010  *  Co-author: John Hsu <KCHSU0@nuvoton.com>
0011  *  This file is based on cht_bsw_rt5672.c and cht-bsw-max98090.c
0012  */
0013
0014 #include <linux/module.h>
0015 #include <linux/platform_device.h>
0016 #include <linux/slab.h>
0017 #include <sound/pcm.h>
0018 #include <sound/pcm_params.h>
0019 #include <sound/soc.h>
0020 #include <sound/soc-acpi.h>
0021 #include <sound/jack.h>
0022 #include <linux/input.h>
0023 #include "../atom/sst-atom-controls.h"
0024 #include "../../codecs/nau8824.h"
0025
0026 struct cht_mc_private {
0027     struct snd_soc_jack jack;
0028 };
0029
0030 static struct snd_soc_jack_pin cht_bsw_jack_pins[] = {
0031     {
0032         .pin = "Headphone",
0033         .mask = SND_JACK_HEADPHONE,
0034     },
0035     {
0036         .pin = "Headset Mic",
0037         .mask = SND_JACK_MICROPHONE,
0038     },
0039 };
0040
0041 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
0042     SND_SOC_DAPM_HP("Headphone", NULL),
0043     SND_SOC_DAPM_MIC("Headset Mic", NULL),
0044     SND_SOC_DAPM_MIC("Int Mic", NULL),
0045     SND_SOC_DAPM_SPK("Ext Spk", NULL),
0046 };
0047
0048 static const struct snd_soc_dapm_route cht_audio_map[] = {
0049     {"Ext Spk", NULL, "SPKOUTL"},
0050     {"Ext Spk", NULL, "SPKOUTR"},
0051     {"Headphone", NULL, "HPOL"},
0052     {"Headphone", NULL, "HPOR"},
0053     {"MIC1", NULL, "Int Mic"},
0054     {"MIC2", NULL, "Int Mic"},
0055     {"HSMIC1", NULL, "Headset Mic"},
0056     {"HSMIC2", NULL, "Headset Mic"},
0057     {"Playback", NULL, "ssp2 Tx"},
0058     {"ssp2 Tx", NULL, "codec_out0"},
0059     {"ssp2 Tx", NULL, "codec_out1"},
0060     {"codec_in0", NULL, "ssp2 Rx" },
0061     {"codec_in1", NULL, "ssp2 Rx" },
0062     {"ssp2 Rx", NULL, "Capture"},
0063 };
0064
0065 static const struct snd_kcontrol_new cht_mc_controls[] = {
0066     SOC_DAPM_PIN_SWITCH("Headphone"),
0067     SOC_DAPM_PIN_SWITCH("Headset Mic"),
0068     SOC_DAPM_PIN_SWITCH("Int Mic"),
0069     SOC_DAPM_PIN_SWITCH("Ext Spk"),
0070 };
0071
0072 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
0073     struct snd_pcm_hw_params *params)
0074 {
0075     struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
0076     struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
0077     int ret;
0078
0079     ret = snd_soc_dai_set_sysclk(codec_dai, NAU8824_CLK_FLL_FS, 0,
0080         SND_SOC_CLOCK_IN);
0081     if (ret < 0) {
0082         dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);
0083         return ret;
0084     }
0085     ret = snd_soc_dai_set_pll(codec_dai, 0, 0, params_rate(params),
0086         params_rate(params) * 256);
0087     if (ret < 0) {
0088         dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
0089         return ret;
0090     }
0091
0092     return 0;
0093 }
0094
0095 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
0096 {
0097     struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
0098     struct snd_soc_jack *jack = &ctx->jack;
0099     struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
0100     struct snd_soc_component *component = codec_dai->component;
0101     int ret, jack_type;
0102
0103     /* NAU88L24 supports 4 buttons headset detection
0104      * KEY_PLAYPAUSE
0105      * KEY_VOICECOMMAND
0106      * KEY_VOLUMEUP
0107      * KEY_VOLUMEDOWN
0108      */
0109     jack_type = SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
0110         SND_JACK_BTN_2 | SND_JACK_BTN_3;
0111     ret = snd_soc_card_jack_new_pins(runtime->card, "Headset", jack_type,
0112         jack, cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
0113     if (ret) {
0114         dev_err(runtime->dev,
0115             "Headset Jack creation failed %d\n", ret);
0116         return ret;
0117     }
0118     snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
0119     snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
0120     snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
0121     snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
0122
0123     nau8824_enable_jack_detect(component, jack);
0124
0125     return ret;
0126 }
0127
0128 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
0129     struct snd_pcm_hw_params *params)
0130 {
0131     struct snd_interval *rate = hw_param_interval(params,
0132         SNDRV_PCM_HW_PARAM_RATE);
0133     struct snd_interval *channels = hw_param_interval(params,
0134         SNDRV_PCM_HW_PARAM_CHANNELS);
0135     struct snd_mask *fmt =
0136         hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
0137     int ret;
0138
0139     /* The DSP will covert the FE rate to 48k, stereo, 24bits */
0140     rate->min = rate->max = 48000;
0141     channels->min = channels->max = 2;
0142
0143     /* set SSP2 to 24-bit */
0144     snd_mask_none(fmt);
0145     params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
0146
0147     /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
0148     ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_codec(rtd, 0), 0xf, 0x1, 4, 24);
0149     if (ret < 0) {
0150         dev_err(rtd->dev, "can't set codec TDM slot %d\n", ret);
0151         return ret;
0152     }
0153
0154     return 0;
0155 }
0156
0157 static int cht_aif1_startup(struct snd_pcm_substream *substream)
0158 {
0159     return snd_pcm_hw_constraint_single(substream->runtime,
0160         SNDRV_PCM_HW_PARAM_RATE, 48000);
0161 }
0162
0163 static const struct snd_soc_ops cht_aif1_ops = {
0164     .startup = cht_aif1_startup,
0165 };
0166
0167 static const struct snd_soc_ops cht_be_ssp2_ops = {
0168     .hw_params = cht_aif1_hw_params,
0169 };
0170
0171 SND_SOC_DAILINK_DEF(dummy,
0172     DAILINK_COMP_ARRAY(COMP_DUMMY()));
0173
0174 SND_SOC_DAILINK_DEF(media,
0175     DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
0176
0177 SND_SOC_DAILINK_DEF(deepbuffer,
0178     DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
0179
0180 SND_SOC_DAILINK_DEF(ssp2_port,
0181     DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
0182 SND_SOC_DAILINK_DEF(ssp2_codec,
0183     DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10508824:00",
0184                       NAU8824_CODEC_DAI)));
0185
0186 SND_SOC_DAILINK_DEF(platform,
0187     DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
0188
0189 static struct snd_soc_dai_link cht_dailink[] = {
0190     /* Front End DAI links */
0191     [MERR_DPCM_AUDIO] = {
0192         .name = "Audio Port",
0193         .stream_name = "Audio",
0194         .nonatomic = true,
0195         .dynamic = 1,
0196         .dpcm_playback = 1,
0197         .dpcm_capture = 1,
0198         .ops = &cht_aif1_ops,
0199         SND_SOC_DAILINK_REG(media, dummy, platform),
0200     },
0201     [MERR_DPCM_DEEP_BUFFER] = {
0202         .name = "Deep-Buffer Audio Port",
0203         .stream_name = "Deep-Buffer Audio",
0204         .nonatomic = true,
0205         .dynamic = 1,
0206         .dpcm_playback = 1,
0207         .ops = &cht_aif1_ops,
0208         SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
0209     },
0210     /* Back End DAI links */
0211     {
0212         /* SSP2 - Codec */
0213         .name = "SSP2-Codec",
0214         .id = 0,
0215         .no_pcm = 1,
0216         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
0217             | SND_SOC_DAIFMT_CBC_CFC,
0218         .init = cht_codec_init,
0219         .be_hw_params_fixup = cht_codec_fixup,
0220         .dpcm_playback = 1,
0221         .dpcm_capture = 1,
0222         .ops = &cht_be_ssp2_ops,
0223         SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
0224     },
0225 };
0226
0227 /* use space before codec name to simplify card ID, and simplify driver name */
0228 #define SOF_CARD_NAME "bytcht nau8824" /* card name will be 'sof-bytcht nau8824 */
0229 #define SOF_DRIVER_NAME "SOF"
0230
0231 #define CARD_NAME "chtnau8824"
0232 #define DRIVER_NAME NULL /* card name will be used for driver name */
0233
0234 /* SoC card */
0235 static struct snd_soc_card snd_soc_card_cht = {
0236     .owner = THIS_MODULE,
0237     .dai_link = cht_dailink,
0238     .num_links = ARRAY_SIZE(cht_dailink),
0239     .dapm_widgets = cht_dapm_widgets,
0240     .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
0241     .dapm_routes = cht_audio_map,
0242     .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
0243     .controls = cht_mc_controls,
0244     .num_controls = ARRAY_SIZE(cht_mc_controls),
0245 };
0246
0247 static int snd_cht_mc_probe(struct platform_device *pdev)
0248 {
0249     struct cht_mc_private *drv;
0250     struct snd_soc_acpi_mach *mach;
0251     const char *platform_name;
0252     bool sof_parent;
0253     int ret_val;
0254
0255     drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
0256     if (!drv)
0257         return -ENOMEM;
0258     snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
0259
0260     /* override platform name, if required */
0261     snd_soc_card_cht.dev = &pdev->dev;
0262     mach = pdev->dev.platform_data;
0263     platform_name = mach->mach_params.platform;
0264
0265     ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
0266                             platform_name);
0267     if (ret_val)
0268         return ret_val;
0269
0270     sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);
0271
0272     /* set card and driver name */
0273     if (sof_parent) {
0274         snd_soc_card_cht.name = SOF_CARD_NAME;
0275         snd_soc_card_cht.driver_name = SOF_DRIVER_NAME;
0276     } else {
0277         snd_soc_card_cht.name = CARD_NAME;
0278         snd_soc_card_cht.driver_name = DRIVER_NAME;
0279     }
0280
0281     snd_soc_card_cht.components = nau8824_components();
0282
0283     /* set pm ops */
0284     if (sof_parent)
0285         pdev->dev.driver->pm = &snd_soc_pm_ops;
0286
0287     /* register the soc card */
0288     ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
0289     if (ret_val) {
0290         dev_err(&pdev->dev,
0291             "snd_soc_register_card failed %d\n", ret_val);
0292         return ret_val;
0293     }
0294     platform_set_drvdata(pdev, &snd_soc_card_cht);
0295
0296     return ret_val;
0297 }
0298
0299 static struct platform_driver snd_cht_mc_driver = {
0300     .driver = {
0301         .name = "cht-bsw-nau8824",
0302     },
0303     .probe = snd_cht_mc_probe,
0304 };
0305
0306 module_platform_driver(snd_cht_mc_driver);
0307
0308 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
0309 MODULE_AUTHOR("Wang, Joseph C <joequant@gmail.com>");
0310 MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
0311 MODULE_LICENSE("GPL v2");
0312 MODULE_ALIAS("platform:cht-bsw-nau8824");