avs/boards/max98373.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 //
0003 // Copyright(c) 2022 Intel Corporation. All rights reserved.
0004 //
0005 // Authors: Cezary Rojewski <cezary.rojewski@intel.com>
0006 //          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
0007 //
0008
0009 #include <linux/module.h>
0010 #include <linux/platform_device.h>
0011 #include <sound/pcm_params.h>
0012 #include <sound/soc.h>
0013 #include <sound/soc-acpi.h>
0014 #include <sound/soc-dapm.h>
0015
0016 #define MAX98373_DEV0_NAME  "i2c-MX98373:00"
0017 #define MAX98373_DEV1_NAME  "i2c-MX98373:01"
0018 #define MAX98373_CODEC_NAME "max98373-aif1"
0019
0020 static struct snd_soc_codec_conf card_codec_conf[] = {
0021     {
0022         .dlc = COMP_CODEC_CONF(MAX98373_DEV0_NAME),
0023         .name_prefix = "Right",
0024     },
0025     {
0026         .dlc = COMP_CODEC_CONF(MAX98373_DEV1_NAME),
0027         .name_prefix = "Left",
0028     },
0029 };
0030
0031 static const struct snd_kcontrol_new card_controls[] = {
0032     SOC_DAPM_PIN_SWITCH("Left Spk"),
0033     SOC_DAPM_PIN_SWITCH("Right Spk"),
0034 };
0035
0036 static const struct snd_soc_dapm_widget card_widgets[] = {
0037     SND_SOC_DAPM_SPK("Left Spk", NULL),
0038     SND_SOC_DAPM_SPK("Right Spk", NULL),
0039 };
0040
0041 static const struct snd_soc_dapm_route card_base_routes[] = {
0042     { "Left Spk", NULL, "Left BE_OUT" },
0043     { "Right Spk", NULL, "Right BE_OUT" },
0044 };
0045
0046 static int
0047 avs_max98373_be_fixup(struct snd_soc_pcm_runtime *runrime, struct snd_pcm_hw_params *params)
0048 {
0049     struct snd_interval *rate, *channels;
0050     struct snd_mask *fmt;
0051
0052     rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
0053     channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
0054     fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
0055
0056     /* The ADSP will covert the FE rate to 48k, stereo */
0057     rate->min = rate->max = 48000;
0058     channels->min = channels->max = 2;
0059
0060     /* set SSP0 to 16 bit */
0061     snd_mask_none(fmt);
0062     snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
0063     return 0;
0064 }
0065
0066 static int avs_max98373_hw_params(struct snd_pcm_substream *substream,
0067                   struct snd_pcm_hw_params *params)
0068 {
0069     struct snd_soc_pcm_runtime *runtime = asoc_substream_to_rtd(substream);
0070     struct snd_soc_dai *codec_dai;
0071     int ret, i;
0072
0073     for_each_rtd_codec_dais(runtime, i, codec_dai) {
0074         if (!strcmp(codec_dai->component->name, MAX98373_DEV0_NAME)) {
0075             ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x30, 3, 8, 16);
0076             if (ret < 0) {
0077                 dev_err(runtime->dev, "DEV0 TDM slot err:%d\n", ret);
0078                 return ret;
0079             }
0080         }
0081         if (!strcmp(codec_dai->component->name, MAX98373_DEV1_NAME)) {
0082             ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xC0, 3, 8, 16);
0083             if (ret < 0) {
0084                 dev_err(runtime->dev, "DEV1 TDM slot err:%d\n", ret);
0085                 return ret;
0086             }
0087         }
0088     }
0089
0090     return 0;
0091 }
0092
0093 static const struct snd_soc_ops avs_max98373_ops = {
0094     .hw_params = avs_max98373_hw_params,
0095 };
0096
0097 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
0098                    struct snd_soc_dai_link **dai_link)
0099 {
0100     struct snd_soc_dai_link_component *platform;
0101     struct snd_soc_dai_link *dl;
0102
0103     dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
0104     platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
0105     if (!dl || !platform)
0106         return -ENOMEM;
0107
0108     platform->name = platform_name;
0109
0110     dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
0111     dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
0112     dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs) * 2, GFP_KERNEL);
0113     if (!dl->name || !dl->cpus || !dl->codecs)
0114         return -ENOMEM;
0115
0116     dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
0117     dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_DEV0_NAME);
0118     dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_CODEC_NAME);
0119     dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_DEV1_NAME);
0120     dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_CODEC_NAME);
0121     if (!dl->cpus->dai_name || !dl->codecs[0].name || !dl->codecs[0].dai_name ||
0122         !dl->codecs[1].name || !dl->codecs[1].dai_name)
0123         return -ENOMEM;
0124
0125     dl->num_cpus = 1;
0126     dl->num_codecs = 2;
0127     dl->platforms = platform;
0128     dl->num_platforms = 1;
0129     dl->id = 0;
0130     dl->dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC;
0131     dl->be_hw_params_fixup = avs_max98373_be_fixup;
0132     dl->nonatomic = 1;
0133     dl->no_pcm = 1;
0134     dl->dpcm_capture = 1;
0135     dl->dpcm_playback = 1;
0136     dl->ignore_pmdown_time = 1;
0137     dl->ops = &avs_max98373_ops;
0138
0139     *dai_link = dl;
0140
0141     return 0;
0142 }
0143
0144 static int avs_create_dapm_routes(struct device *dev, int ssp_port,
0145                   struct snd_soc_dapm_route **routes, int *num_routes)
0146 {
0147     struct snd_soc_dapm_route *dr;
0148     const int num_base = ARRAY_SIZE(card_base_routes);
0149     const int num_dr = num_base + 2;
0150     int idx;
0151
0152     dr = devm_kcalloc(dev, num_dr, sizeof(*dr), GFP_KERNEL);
0153     if (!dr)
0154         return -ENOMEM;
0155
0156     memcpy(dr, card_base_routes, num_base * sizeof(*dr));
0157
0158     idx = num_base;
0159     dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "Left HiFi Playback");
0160     dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port);
0161     if (!dr[idx].sink || !dr[idx].source)
0162         return -ENOMEM;
0163
0164     idx++;
0165     dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "Right HiFi Playback");
0166     dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port);
0167     if (!dr[idx].sink || !dr[idx].source)
0168         return -ENOMEM;
0169
0170     *routes = dr;
0171     *num_routes = num_dr;
0172
0173     return 0;
0174 }
0175
0176 static int avs_max98373_probe(struct platform_device *pdev)
0177 {
0178     struct snd_soc_dapm_route *routes;
0179     struct snd_soc_dai_link *dai_link;
0180     struct snd_soc_acpi_mach *mach;
0181     struct snd_soc_card *card;
0182     struct device *dev = &pdev->dev;
0183     const char *pname;
0184     int num_routes, ssp_port, ret;
0185
0186     mach = dev_get_platdata(dev);
0187     pname = mach->mach_params.platform;
0188     ssp_port = __ffs(mach->mach_params.i2s_link_mask);
0189
0190     ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
0191     if (ret) {
0192         dev_err(dev, "Failed to create dai link: %d", ret);
0193         return ret;
0194     }
0195
0196     ret = avs_create_dapm_routes(dev, ssp_port, &routes, &num_routes);
0197     if (ret) {
0198         dev_err(dev, "Failed to create dapm routes: %d", ret);
0199         return ret;
0200     }
0201
0202     card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
0203     if (!card)
0204         return -ENOMEM;
0205
0206     card->name = "avs_max98373";
0207     card->dev = dev;
0208     card->owner = THIS_MODULE;
0209     card->dai_link = dai_link;
0210     card->num_links = 1;
0211     card->codec_conf = card_codec_conf;
0212     card->num_configs = ARRAY_SIZE(card_codec_conf);
0213     card->controls = card_controls;
0214     card->num_controls = ARRAY_SIZE(card_controls);
0215     card->dapm_widgets = card_widgets;
0216     card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
0217     card->dapm_routes = routes;
0218     card->num_dapm_routes = num_routes;
0219     card->fully_routed = true;
0220
0221     ret = snd_soc_fixup_dai_links_platform_name(card, pname);
0222     if (ret)
0223         return ret;
0224
0225     return devm_snd_soc_register_card(dev, card);
0226 }
0227
0228 static struct platform_driver avs_max98373_driver = {
0229     .probe = avs_max98373_probe,
0230     .driver = {
0231         .name = "avs_max98373",
0232         .pm = &snd_soc_pm_ops,
0233     },
0234 };
0235
0236 module_platform_driver(avs_max98373_driver)
0237
0238 MODULE_LICENSE("GPL");
0239 MODULE_ALIAS("platform:avs_max98373");