intel/boards/bytcht_cx2072x.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 //
0003 // ASoC DPCM Machine driver for Baytrail / Cherrytrail platforms with
0004 // CX2072X codec
0005 //
0006
0007 #include <linux/acpi.h>
0008 #include <linux/device.h>
0009 #include <linux/gpio/consumer.h>
0010 #include <linux/module.h>
0011 #include <linux/platform_device.h>
0012 #include <linux/slab.h>
0013 #include <sound/pcm.h>
0014 #include <sound/pcm_params.h>
0015 #include <sound/jack.h>
0016 #include <sound/soc.h>
0017 #include <sound/soc-acpi.h>
0018 #include "../../codecs/cx2072x.h"
0019 #include "../atom/sst-atom-controls.h"
0020
0021 static const struct snd_soc_dapm_widget byt_cht_cx2072x_widgets[] = {
0022     SND_SOC_DAPM_HP("Headphone", NULL),
0023     SND_SOC_DAPM_MIC("Headset Mic", NULL),
0024     SND_SOC_DAPM_MIC("Int Mic", NULL),
0025     SND_SOC_DAPM_SPK("Ext Spk", NULL),
0026 };
0027
0028 static const struct snd_soc_dapm_route byt_cht_cx2072x_audio_map[] = {
0029     /* External Speakers: HFL, HFR */
0030     {"Headphone", NULL, "PORTA"},
0031     {"Ext Spk", NULL, "PORTG"},
0032     {"PORTC", NULL, "Int Mic"},
0033     {"PORTD", NULL, "Headset Mic"},
0034
0035     {"Playback", NULL, "ssp2 Tx"},
0036     {"ssp2 Tx", NULL, "codec_out0"},
0037     {"ssp2 Tx", NULL, "codec_out1"},
0038     {"codec_in0", NULL, "ssp2 Rx"},
0039     {"codec_in1", NULL, "ssp2 Rx"},
0040     {"ssp2 Rx", NULL, "Capture"},
0041 };
0042
0043 static const struct snd_kcontrol_new byt_cht_cx2072x_controls[] = {
0044     SOC_DAPM_PIN_SWITCH("Headphone"),
0045     SOC_DAPM_PIN_SWITCH("Headset Mic"),
0046     SOC_DAPM_PIN_SWITCH("Int Mic"),
0047     SOC_DAPM_PIN_SWITCH("Ext Spk"),
0048 };
0049
0050 static struct snd_soc_jack byt_cht_cx2072x_headset;
0051
0052 /* Headset jack detection DAPM pins */
0053 static struct snd_soc_jack_pin byt_cht_cx2072x_headset_pins[] = {
0054     {
0055         .pin = "Headset Mic",
0056         .mask = SND_JACK_MICROPHONE,
0057     },
0058     {
0059         .pin = "Headphone",
0060         .mask = SND_JACK_HEADPHONE,
0061     },
0062 };
0063
0064 static const struct acpi_gpio_params byt_cht_cx2072x_headset_gpios;
0065 static const struct acpi_gpio_mapping byt_cht_cx2072x_acpi_gpios[] = {
0066     { "headset-gpios", &byt_cht_cx2072x_headset_gpios, 1 },
0067     {},
0068 };
0069
0070 static int byt_cht_cx2072x_init(struct snd_soc_pcm_runtime *rtd)
0071 {
0072     struct snd_soc_card *card = rtd->card;
0073     struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;
0074     int ret;
0075
0076     if (devm_acpi_dev_add_driver_gpios(codec->dev,
0077                        byt_cht_cx2072x_acpi_gpios))
0078         dev_warn(rtd->dev, "Unable to add GPIO mapping table\n");
0079
0080     card->dapm.idle_bias_off = true;
0081
0082     /* set the default PLL rate, the clock is handled by the codec driver */
0083     ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), CX2072X_MCLK_EXTERNAL_PLL,
0084                      19200000, SND_SOC_CLOCK_IN);
0085     if (ret) {
0086         dev_err(rtd->dev, "Could not set sysclk\n");
0087         return ret;
0088     }
0089
0090     ret = snd_soc_card_jack_new_pins(card, "Headset",
0091                      SND_JACK_HEADSET | SND_JACK_BTN_0,
0092                      &byt_cht_cx2072x_headset,
0093                      byt_cht_cx2072x_headset_pins,
0094                      ARRAY_SIZE(byt_cht_cx2072x_headset_pins));
0095     if (ret)
0096         return ret;
0097
0098     snd_soc_component_set_jack(codec, &byt_cht_cx2072x_headset, NULL);
0099
0100     snd_soc_dai_set_bclk_ratio(asoc_rtd_to_codec(rtd, 0), 50);
0101
0102     return 0;
0103 }
0104
0105 static int byt_cht_cx2072x_fixup(struct snd_soc_pcm_runtime *rtd,
0106                  struct snd_pcm_hw_params *params)
0107 {
0108     struct snd_interval *rate =
0109         hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
0110     struct snd_interval *channels =
0111         hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
0112     int ret;
0113
0114     /* The DSP will covert the FE rate to 48k, stereo, 24bits */
0115     rate->min = rate->max = 48000;
0116     channels->min = channels->max = 2;
0117
0118     /* set SSP2 to 24-bit */
0119     params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
0120
0121     /*
0122      * Default mode for SSP configuration is TDM 4 slot, override config
0123      * with explicit setting to I2S 2ch 24-bit. The word length is set with
0124      * dai_set_tdm_slot() since there is no other API exposed
0125      */
0126     ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
0127                 SND_SOC_DAIFMT_I2S     |
0128                 SND_SOC_DAIFMT_NB_NF   |
0129                 SND_SOC_DAIFMT_BP_FP);
0130     if (ret < 0) {
0131         dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
0132         return ret;
0133     }
0134
0135     ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 24);
0136     if (ret < 0) {
0137         dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
0138         return ret;
0139     }
0140
0141     return 0;
0142 }
0143
0144 static int byt_cht_cx2072x_aif1_startup(struct snd_pcm_substream *substream)
0145 {
0146     return snd_pcm_hw_constraint_single(substream->runtime,
0147                         SNDRV_PCM_HW_PARAM_RATE, 48000);
0148 }
0149
0150 static const struct snd_soc_ops byt_cht_cx2072x_aif1_ops = {
0151     .startup = byt_cht_cx2072x_aif1_startup,
0152 };
0153
0154 SND_SOC_DAILINK_DEF(dummy,
0155     DAILINK_COMP_ARRAY(COMP_DUMMY()));
0156
0157 SND_SOC_DAILINK_DEF(media,
0158     DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
0159
0160 SND_SOC_DAILINK_DEF(deepbuffer,
0161     DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
0162
0163 SND_SOC_DAILINK_DEF(ssp2,
0164     DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
0165
0166 SND_SOC_DAILINK_DEF(cx2072x,
0167     DAILINK_COMP_ARRAY(COMP_CODEC("i2c-14F10720:00", "cx2072x-hifi")));
0168
0169 SND_SOC_DAILINK_DEF(platform,
0170     DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
0171
0172 static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = {
0173     [MERR_DPCM_AUDIO] = {
0174         .name = "Audio Port",
0175         .stream_name = "Audio",
0176         .nonatomic = true,
0177         .dynamic = 1,
0178         .dpcm_playback = 1,
0179         .dpcm_capture = 1,
0180         .ops = &byt_cht_cx2072x_aif1_ops,
0181         SND_SOC_DAILINK_REG(media, dummy, platform),
0182     },
0183     [MERR_DPCM_DEEP_BUFFER] = {
0184         .name = "Deep-Buffer Audio Port",
0185         .stream_name = "Deep-Buffer Audio",
0186         .nonatomic = true,
0187         .dynamic = 1,
0188         .dpcm_playback = 1,
0189         .ops = &byt_cht_cx2072x_aif1_ops,
0190         SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
0191     },
0192     /* back ends */
0193     {
0194         .name = "SSP2-Codec",
0195         .id = 0,
0196         .no_pcm = 1,
0197         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
0198                           | SND_SOC_DAIFMT_CBC_CFC,
0199         .init = byt_cht_cx2072x_init,
0200         .be_hw_params_fixup = byt_cht_cx2072x_fixup,
0201         .dpcm_playback = 1,
0202         .dpcm_capture = 1,
0203         SND_SOC_DAILINK_REG(ssp2, cx2072x, platform),
0204     },
0205 };
0206
0207 /* use space before codec name to simplify card ID, and simplify driver name */
0208 #define SOF_CARD_NAME "bytcht cx2072x" /* card name will be 'sof-bytcht cx2072x' */
0209 #define SOF_DRIVER_NAME "SOF"
0210
0211 #define CARD_NAME "bytcht-cx2072x"
0212 #define DRIVER_NAME NULL /* card name will be used for driver name */
0213
0214 /* SoC card */
0215 static struct snd_soc_card byt_cht_cx2072x_card = {
0216     .name = CARD_NAME,
0217     .driver_name = DRIVER_NAME,
0218     .owner = THIS_MODULE,
0219     .dai_link = byt_cht_cx2072x_dais,
0220     .num_links = ARRAY_SIZE(byt_cht_cx2072x_dais),
0221     .dapm_widgets = byt_cht_cx2072x_widgets,
0222     .num_dapm_widgets = ARRAY_SIZE(byt_cht_cx2072x_widgets),
0223     .dapm_routes = byt_cht_cx2072x_audio_map,
0224     .num_dapm_routes = ARRAY_SIZE(byt_cht_cx2072x_audio_map),
0225     .controls = byt_cht_cx2072x_controls,
0226     .num_controls = ARRAY_SIZE(byt_cht_cx2072x_controls),
0227 };
0228
0229 static char codec_name[SND_ACPI_I2C_ID_LEN];
0230
0231 static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev)
0232 {
0233     struct snd_soc_acpi_mach *mach;
0234     struct acpi_device *adev;
0235     int dai_index = 0;
0236     bool sof_parent;
0237     int i, ret;
0238
0239     byt_cht_cx2072x_card.dev = &pdev->dev;
0240     mach = dev_get_platdata(&pdev->dev);
0241
0242     /* fix index of codec dai */
0243     for (i = 0; i < ARRAY_SIZE(byt_cht_cx2072x_dais); i++) {
0244         if (!strcmp(byt_cht_cx2072x_dais[i].codecs->name,
0245                 "i2c-14F10720:00")) {
0246             dai_index = i;
0247             break;
0248         }
0249     }
0250
0251     /* fixup codec name based on HID */
0252     adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
0253     if (adev) {
0254         snprintf(codec_name, sizeof(codec_name), "i2c-%s",
0255              acpi_dev_name(adev));
0256         put_device(&adev->dev);
0257         byt_cht_cx2072x_dais[dai_index].codecs->name = codec_name;
0258     }
0259
0260     /* override platform name, if required */
0261     ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_cx2072x_card,
0262                             mach->mach_params.platform);
0263     if (ret)
0264         return ret;
0265
0266     sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);
0267
0268     /* set card and driver name */
0269     if (sof_parent) {
0270         byt_cht_cx2072x_card.name = SOF_CARD_NAME;
0271         byt_cht_cx2072x_card.driver_name = SOF_DRIVER_NAME;
0272     } else {
0273         byt_cht_cx2072x_card.name = CARD_NAME;
0274         byt_cht_cx2072x_card.driver_name = DRIVER_NAME;
0275     }
0276
0277     /* set pm ops */
0278     if (sof_parent)
0279         pdev->dev.driver->pm = &snd_soc_pm_ops;
0280
0281     return devm_snd_soc_register_card(&pdev->dev, &byt_cht_cx2072x_card);
0282 }
0283
0284 static struct platform_driver snd_byt_cht_cx2072x_driver = {
0285     .driver = {
0286         .name = "bytcht_cx2072x",
0287     },
0288     .probe = snd_byt_cht_cx2072x_probe,
0289 };
0290 module_platform_driver(snd_byt_cht_cx2072x_driver);
0291
0292 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver");
0293 MODULE_LICENSE("GPL v2");
0294 MODULE_ALIAS("platform:bytcht_cx2072x");