sound/soc/intel/boards/bytcht_da7213.c

   1 /*
   2  *  bytcht-da7213.c - ASoc Machine driver for Intel Baytrail and
   3  *             Cherrytrail-based platforms, with Dialog DA7213 codec
   4  *
   5  *  Copyright (C) 2017 Intel Corporation
   6  *  Author: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
   7  *
   8  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; version 2 of the License.
  13  *
  14  *  This program is distributed in the hope that it will be useful, but
  15  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  *  General Public License for more details.
  18  *
  19  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/acpi.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/slab.h>
  26 #include <asm/platform_sst_audio.h>
  27 #include <sound/pcm.h>
  28 #include <sound/pcm_params.h>
  29 #include <sound/soc.h>
  30 #include <sound/soc-acpi.h>
  31 #include "../../codecs/da7213.h"
  32 #include "../atom/sst-atom-controls.h"
  33
  34 static const struct snd_kcontrol_new controls[] = {
  35         SOC_DAPM_PIN_SWITCH("Headphone Jack"),
  36         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  37         SOC_DAPM_PIN_SWITCH("Mic"),
  38         SOC_DAPM_PIN_SWITCH("Aux In"),
  39 };
  40
  41 static const struct snd_soc_dapm_widget dapm_widgets[] = {
  42         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  43         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  44         SND_SOC_DAPM_MIC("Mic", NULL),
  45         SND_SOC_DAPM_LINE("Aux In", NULL),
  46 };
  47
  48 static const struct snd_soc_dapm_route audio_map[] = {
  49         {"Headphone Jack", NULL, "HPL"},
  50         {"Headphone Jack", NULL, "HPR"},
  51
  52         {"AUXL", NULL, "Aux In"},
  53         {"AUXR", NULL, "Aux In"},
  54
  55         /* Assume Mic1 is linked to Headset and Mic2 to on-board mic */
  56         {"MIC1", NULL, "Headset Mic"},
  57         {"MIC2", NULL, "Mic"},
  58
  59         /* SOC-codec link */
  60         {"ssp2 Tx", NULL, "codec_out0"},
  61         {"ssp2 Tx", NULL, "codec_out1"},
  62         {"codec_in0", NULL, "ssp2 Rx"},
  63         {"codec_in1", NULL, "ssp2 Rx"},
  64
  65         {"Playback", NULL, "ssp2 Tx"},
  66         {"ssp2 Rx", NULL, "Capture"},
  67 };
  68
  69 static int codec_fixup(struct snd_soc_pcm_runtime *rtd,
  70                        struct snd_pcm_hw_params *params)
  71 {
  72         int ret;
  73         struct snd_interval *rate = hw_param_interval(params,
  74                         SNDRV_PCM_HW_PARAM_RATE);
  75         struct snd_interval *channels = hw_param_interval(params,
  76                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
  77
  78         /* The DSP will convert the FE rate to 48k, stereo, 24bits */
  79         rate->min = rate->max = 48000;
  80         channels->min = channels->max = 2;
  81
  82         /* set SSP2 to 24-bit */
  83         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
  84
  85         /*
  86          * Default mode for SSP configuration is TDM 4 slot, override config
  87          * with explicit setting to I2S 2ch 24-bit. The word length is set with
  88          * dai_set_tdm_slot() since there is no other API exposed
  89          */
  90         ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
  91                                   SND_SOC_DAIFMT_I2S     |
  92                                   SND_SOC_DAIFMT_NB_NF   |
  93                                   SND_SOC_DAIFMT_CBS_CFS);
  94         if (ret < 0) {
  95                 dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
  96                 return ret;
  97         }
  98
  99         ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 24);
 100         if (ret < 0) {
 101                 dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
 102                 return ret;
 103         }
 104
 105         return 0;
 106 }
 107
 108 static int aif1_startup(struct snd_pcm_substream *substream)
 109 {
 110         return snd_pcm_hw_constraint_single(substream->runtime,
 111                         SNDRV_PCM_HW_PARAM_RATE, 48000);
 112 }
 113
 114 static int aif1_hw_params(struct snd_pcm_substream *substream,
 115                           struct snd_pcm_hw_params *params)
 116 {
 117         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 118         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 119         int ret;
 120
 121         ret = snd_soc_dai_set_sysclk(codec_dai, DA7213_CLKSRC_MCLK,
 122                                      19200000, SND_SOC_CLOCK_IN);
 123         if (ret < 0)
 124                 dev_err(codec_dai->dev, "can't set codec sysclk configuration\n");
 125
 126         ret = snd_soc_dai_set_pll(codec_dai, 0,
 127                         DA7213_SYSCLK_PLL_SRM, 0, DA7213_PLL_FREQ_OUT_98304000);
 128         if (ret < 0) {
 129                 dev_err(codec_dai->dev, "failed to start PLL: %d\n", ret);
 130                 return -EIO;
 131         }
 132
 133         return ret;
 134 }
 135
 136 static int aif1_hw_free(struct snd_pcm_substream *substream)
 137 {
 138         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 139         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 140         int ret;
 141
 142         ret = snd_soc_dai_set_pll(codec_dai, 0,
 143                                   DA7213_SYSCLK_MCLK, 0, 0);
 144         if (ret < 0) {
 145                 dev_err(codec_dai->dev, "failed to stop PLL: %d\n", ret);
 146                 return -EIO;
 147         }
 148
 149         return ret;
 150 }
 151
 152 static const struct snd_soc_ops aif1_ops = {
 153         .startup = aif1_startup,
 154 };
 155
 156 static const struct snd_soc_ops ssp2_ops = {
 157         .hw_params = aif1_hw_params,
 158         .hw_free = aif1_hw_free,
 159
 160 };
 161
 162 static struct snd_soc_dai_link dailink[] = {
 163         [MERR_DPCM_AUDIO] = {
 164                 .name = "Audio Port",
 165                 .stream_name = "Audio",
 166                 .cpu_dai_name = "media-cpu-dai",
 167                 .codec_dai_name = "snd-soc-dummy-dai",
 168                 .codec_name = "snd-soc-dummy",
 169                 .platform_name = "sst-mfld-platform",
 170                 .nonatomic = true,
 171                 .dynamic = 1,
 172                 .dpcm_playback = 1,
 173                 .dpcm_capture = 1,
 174                 .ops = &aif1_ops,
 175         },
 176         [MERR_DPCM_DEEP_BUFFER] = {
 177                 .name = "Deep-Buffer Audio Port",
 178                 .stream_name = "Deep-Buffer Audio",
 179                 .cpu_dai_name = "deepbuffer-cpu-dai",
 180                 .codec_dai_name = "snd-soc-dummy-dai",
 181                 .codec_name = "snd-soc-dummy",
 182                 .platform_name = "sst-mfld-platform",
 183                 .nonatomic = true,
 184                 .dynamic = 1,
 185                 .dpcm_playback = 1,
 186                 .ops = &aif1_ops,
 187         },
 188         /* CODEC<->CODEC link */
 189         /* back ends */
 190         {
 191                 .name = "SSP2-Codec",
 192                 .id = 0,
 193                 .cpu_dai_name = "ssp2-port",
 194                 .platform_name = "sst-mfld-platform",
 195                 .no_pcm = 1,
 196                 .codec_dai_name = "da7213-hifi",
 197                 .codec_name = "i2c-DLGS7213:00",
 198                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 199                                                 | SND_SOC_DAIFMT_CBS_CFS,
 200                 .be_hw_params_fixup = codec_fixup,
 201                 .nonatomic = true,
 202                 .dpcm_playback = 1,
 203                 .dpcm_capture = 1,
 204                 .ops = &ssp2_ops,
 205         },
 206 };
 207
 208 /* SoC card */
 209 static struct snd_soc_card bytcht_da7213_card = {
 210         .name = "bytcht-da7213",
 211         .owner = THIS_MODULE,
 212         .dai_link = dailink,
 213         .num_links = ARRAY_SIZE(dailink),
 214         .controls = controls,
 215         .num_controls = ARRAY_SIZE(controls),
 216         .dapm_widgets = dapm_widgets,
 217         .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
 218         .dapm_routes = audio_map,
 219         .num_dapm_routes = ARRAY_SIZE(audio_map),
 220 };
 221
 222 static char codec_name[16]; /* i2c-<HID>:00 with HID being 8 chars */
 223
 224 static int bytcht_da7213_probe(struct platform_device *pdev)
 225 {
 226         struct snd_soc_card *card;
 227         struct snd_soc_acpi_mach *mach;
 228         const char *i2c_name = NULL;
 229         int dai_index = 0;
 230         int ret_val = 0;
 231         int i;
 232
 233         mach = (&pdev->dev)->platform_data;
 234         card = &bytcht_da7213_card;
 235         card->dev = &pdev->dev;
 236
 237         /* fix index of codec dai */
 238         for (i = 0; i < ARRAY_SIZE(dailink); i++) {
 239                 if (!strcmp(dailink[i].codec_name, "i2c-DLGS7213:00")) {
 240                         dai_index = i;
 241                         break;
 242                 }
 243         }
 244
 245         /* fixup codec name based on HID */
 246         i2c_name = snd_soc_acpi_find_name_from_hid(mach->id);
 247         if (i2c_name) {
 248                 snprintf(codec_name, sizeof(codec_name),
 249                         "%s%s", "i2c-", i2c_name);
 250                 dailink[dai_index].codec_name = codec_name;
 251         }
 252
 253         ret_val = devm_snd_soc_register_card(&pdev->dev, card);
 254         if (ret_val) {
 255                 dev_err(&pdev->dev,
 256                         "snd_soc_register_card failed %d\n", ret_val);
 257                 return ret_val;
 258         }
 259         platform_set_drvdata(pdev, card);
 260         return ret_val;
 261 }
 262
 263 static struct platform_driver bytcht_da7213_driver = {
 264         .driver = {
 265                 .name = "bytcht_da7213",
 266         },
 267         .probe = bytcht_da7213_probe,
 268 };
 269 module_platform_driver(bytcht_da7213_driver);
 270
 271 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail+DA7213 Machine driver");
 272 MODULE_AUTHOR("Pierre-Louis Bossart");
 273 MODULE_LICENSE("GPL v2");
 274 MODULE_ALIAS("platform:bytcht_da7213");