sound/soc/intel/boards/bytcht_cx2072x.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // ASoC DPCM Machine driver for Baytrail / Cherrytrail platforms with
   4 // CX2072X codec
   5 //
   6
   7 #include <linux/acpi.h>
   8 #include <linux/device.h>
   9 #include <linux/gpio/consumer.h>
  10 #include <linux/module.h>
  11 #include <linux/platform_device.h>
  12 #include <linux/slab.h>
  13 #include <sound/pcm.h>
  14 #include <sound/pcm_params.h>
  15 #include <sound/jack.h>
  16 #include <sound/soc.h>
  17 #include <sound/soc-acpi.h>
  18 #include "../../codecs/cx2072x.h"
  19 #include "../atom/sst-atom-controls.h"
  20
  21 static const struct snd_soc_dapm_widget byt_cht_cx2072x_widgets[] = {
  22         SND_SOC_DAPM_HP("Headphone", NULL),
  23         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  24         SND_SOC_DAPM_MIC("Int Mic", NULL),
  25         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  26 };
  27
  28 static const struct snd_soc_dapm_route byt_cht_cx2072x_audio_map[] = {
  29         /* External Speakers: HFL, HFR */
  30         {"Headphone", NULL, "PORTA"},
  31         {"Ext Spk", NULL, "PORTG"},
  32         {"PORTC", NULL, "Int Mic"},
  33         {"PORTD", NULL, "Headset Mic"},
  34
  35         {"Playback", NULL, "ssp2 Tx"},
  36         {"ssp2 Tx", NULL, "codec_out0"},
  37         {"ssp2 Tx", NULL, "codec_out1"},
  38         {"codec_in0", NULL, "ssp2 Rx"},
  39         {"codec_in1", NULL, "ssp2 Rx"},
  40         {"ssp2 Rx", NULL, "Capture"},
  41 };
  42
  43 static const struct snd_kcontrol_new byt_cht_cx2072x_controls[] = {
  44         SOC_DAPM_PIN_SWITCH("Headphone"),
  45         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  46         SOC_DAPM_PIN_SWITCH("Int Mic"),
  47         SOC_DAPM_PIN_SWITCH("Ext Spk"),
  48 };
  49
  50 static struct snd_soc_jack byt_cht_cx2072x_headset;
  51
  52 /* Headset jack detection DAPM pins */
  53 static struct snd_soc_jack_pin byt_cht_cx2072x_headset_pins[] = {
  54         {
  55                 .pin = "Headset Mic",
  56                 .mask = SND_JACK_MICROPHONE,
  57         },
  58         {
  59                 .pin = "Headphone",
  60                 .mask = SND_JACK_HEADPHONE,
  61         },
  62 };
  63
  64 static const struct acpi_gpio_params byt_cht_cx2072x_headset_gpios;
  65 static const struct acpi_gpio_mapping byt_cht_cx2072x_acpi_gpios[] = {
  66         { "headset-gpios", &byt_cht_cx2072x_headset_gpios, 1 },
  67         {},
  68 };
  69
  70 static int byt_cht_cx2072x_init(struct snd_soc_pcm_runtime *rtd)
  71 {
  72         struct snd_soc_card *card = rtd->card;
  73         struct snd_soc_component *codec = rtd->codec_dai->component;
  74         int ret;
  75
  76         if (devm_acpi_dev_add_driver_gpios(codec->dev,
  77                                            byt_cht_cx2072x_acpi_gpios))
  78                 dev_warn(rtd->dev, "Unable to add GPIO mapping table\n");
  79
  80         card->dapm.idle_bias_off = true;
  81
  82         /* set the default PLL rate, the clock is handled by the codec driver */
  83         ret = snd_soc_dai_set_sysclk(rtd->codec_dai, CX2072X_MCLK_EXTERNAL_PLL,
  84                                      19200000, SND_SOC_CLOCK_IN);
  85         if (ret) {
  86                 dev_err(rtd->dev, "Could not set sysclk\n");
  87                 return ret;
  88         }
  89
  90         ret = snd_soc_card_jack_new(card, "Headset",
  91                                     SND_JACK_HEADSET | SND_JACK_BTN_0,
  92                                     &byt_cht_cx2072x_headset,
  93                                     byt_cht_cx2072x_headset_pins,
  94                                     ARRAY_SIZE(byt_cht_cx2072x_headset_pins));
  95         if (ret)
  96                 return ret;
  97
  98         snd_soc_component_set_jack(codec, &byt_cht_cx2072x_headset, NULL);
  99
 100         snd_soc_dai_set_bclk_ratio(rtd->codec_dai, 50);
 101
 102         return ret;
 103 }
 104
 105 static int byt_cht_cx2072x_fixup(struct snd_soc_pcm_runtime *rtd,
 106                                  struct snd_pcm_hw_params *params)
 107 {
 108         struct snd_interval *rate =
 109                 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 110         struct snd_interval *channels =
 111                 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 112         int ret;
 113
 114         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 115         rate->min = rate->max = 48000;
 116         channels->min = channels->max = 2;
 117
 118         /* set SSP2 to 24-bit */
 119         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 120
 121         /*
 122          * Default mode for SSP configuration is TDM 4 slot, override config
 123          * with explicit setting to I2S 2ch 24-bit. The word length is set with
 124          * dai_set_tdm_slot() since there is no other API exposed
 125          */
 126         ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
 127                                 SND_SOC_DAIFMT_I2S     |
 128                                 SND_SOC_DAIFMT_NB_NF   |
 129                                 SND_SOC_DAIFMT_CBS_CFS);
 130         if (ret < 0) {
 131                 dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
 132                 return ret;
 133         }
 134
 135         ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 24);
 136         if (ret < 0) {
 137                 dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
 138                 return ret;
 139         }
 140
 141         return 0;
 142 }
 143
 144 static int byt_cht_cx2072x_aif1_startup(struct snd_pcm_substream *substream)
 145 {
 146         return snd_pcm_hw_constraint_single(substream->runtime,
 147                                             SNDRV_PCM_HW_PARAM_RATE, 48000);
 148 }
 149
 150 static struct snd_soc_ops byt_cht_cx2072x_aif1_ops = {
 151         .startup = byt_cht_cx2072x_aif1_startup,
 152 };
 153
 154 SND_SOC_DAILINK_DEF(dummy,
 155         DAILINK_COMP_ARRAY(COMP_DUMMY()));
 156
 157 SND_SOC_DAILINK_DEF(media,
 158         DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
 159
 160 SND_SOC_DAILINK_DEF(deepbuffer,
 161         DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
 162
 163 SND_SOC_DAILINK_DEF(ssp2,
 164         DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
 165
 166 SND_SOC_DAILINK_DEF(cx2072x,
 167         DAILINK_COMP_ARRAY(COMP_CODEC("i2c-14F10720:00", "cx2072x-hifi")));
 168
 169 SND_SOC_DAILINK_DEF(platform,
 170         DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
 171
 172 static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = {
 173         [MERR_DPCM_AUDIO] = {
 174                 .name = "Audio Port",
 175                 .stream_name = "Audio",
 176                 .nonatomic = true,
 177                 .dynamic = 1,
 178                 .dpcm_playback = 1,
 179                 .dpcm_capture = 1,
 180                 .ops = &byt_cht_cx2072x_aif1_ops,
 181                 SND_SOC_DAILINK_REG(media, dummy, platform),
 182         },
 183         [MERR_DPCM_DEEP_BUFFER] = {
 184                 .name = "Deep-Buffer Audio Port",
 185                 .stream_name = "Deep-Buffer Audio",
 186                 .nonatomic = true,
 187                 .dynamic = 1,
 188                 .dpcm_playback = 1,
 189                 .ops = &byt_cht_cx2072x_aif1_ops,
 190                 SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
 191         },
 192         /* back ends */
 193         {
 194                 .name = "SSP2-Codec",
 195                 .id = 0,
 196                 .no_pcm = 1,
 197                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 198                                               | SND_SOC_DAIFMT_CBS_CFS,
 199                 .init = byt_cht_cx2072x_init,
 200                 .be_hw_params_fixup = byt_cht_cx2072x_fixup,
 201                 .nonatomic = true,
 202                 .dpcm_playback = 1,
 203                 .dpcm_capture = 1,
 204                 SND_SOC_DAILINK_REG(ssp2, cx2072x, platform),
 205         },
 206 };
 207
 208 /* SoC card */
 209 static struct snd_soc_card byt_cht_cx2072x_card = {
 210         .name = "bytcht-cx2072x",
 211         .owner = THIS_MODULE,
 212         .dai_link = byt_cht_cx2072x_dais,
 213         .num_links = ARRAY_SIZE(byt_cht_cx2072x_dais),
 214         .dapm_widgets = byt_cht_cx2072x_widgets,
 215         .num_dapm_widgets = ARRAY_SIZE(byt_cht_cx2072x_widgets),
 216         .dapm_routes = byt_cht_cx2072x_audio_map,
 217         .num_dapm_routes = ARRAY_SIZE(byt_cht_cx2072x_audio_map),
 218         .controls = byt_cht_cx2072x_controls,
 219         .num_controls = ARRAY_SIZE(byt_cht_cx2072x_controls),
 220 };
 221
 222 static char codec_name[SND_ACPI_I2C_ID_LEN];
 223
 224 static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev)
 225 {
 226         struct snd_soc_acpi_mach *mach;
 227         struct acpi_device *adev;
 228         int dai_index = 0;
 229         int i, ret;
 230
 231         byt_cht_cx2072x_card.dev = &pdev->dev;
 232         mach = dev_get_platdata(&pdev->dev);
 233
 234         /* fix index of codec dai */
 235         for (i = 0; i < ARRAY_SIZE(byt_cht_cx2072x_dais); i++) {
 236                 if (!strcmp(byt_cht_cx2072x_dais[i].codecs->name,
 237                             "i2c-14F10720:00")) {
 238                         dai_index = i;
 239                         break;
 240                 }
 241         }
 242
 243         /* fixup codec name based on HID */
 244         adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
 245         if (adev) {
 246                 snprintf(codec_name, sizeof(codec_name), "i2c-%s",
 247                          acpi_dev_name(adev));
 248                 put_device(&adev->dev);
 249                 byt_cht_cx2072x_dais[dai_index].codecs->name = codec_name;
 250         }
 251
 252         /* override plaform name, if required */
 253         ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_cx2072x_card,
 254                                                     mach->mach_params.platform);
 255         if (ret)
 256                 return ret;
 257
 258         return devm_snd_soc_register_card(&pdev->dev, &byt_cht_cx2072x_card);
 259 }
 260
 261 static struct platform_driver snd_byt_cht_cx2072x_driver = {
 262         .driver = {
 263                 .name = "bytcht_cx2072x",
 264         },
 265         .probe = snd_byt_cht_cx2072x_probe,
 266 };
 267 module_platform_driver(snd_byt_cht_cx2072x_driver);
 268
 269 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver");
 270 MODULE_LICENSE("GPL v2");
 271 MODULE_ALIAS("platform:bytcht_cx2072x");