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1// SPDX-License-Identifier: GPL-2.0-only2//3// Copyright(c) 2022 Intel Corporation4//5// Authors: Cezary Rojewski <cezary.rojewski@intel.com>6// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>7//8 9#include <linux/module.h>10#include <linux/platform_device.h>11#include <sound/pcm_params.h>12#include <sound/soc.h>13#include <sound/soc-acpi.h>14#include <sound/soc-dapm.h>15#include "../utils.h"16 17#define MAX98927_DEV0_NAME "i2c-MX98927:00"18#define MAX98927_DEV1_NAME "i2c-MX98927:01"19#define MAX98927_CODEC_NAME "max98927-aif1"20 21static struct snd_soc_codec_conf card_codec_conf[] = {22 {23 .dlc = COMP_CODEC_CONF(MAX98927_DEV0_NAME),24 .name_prefix = "Right",25 },26 {27 .dlc = COMP_CODEC_CONF(MAX98927_DEV1_NAME),28 .name_prefix = "Left",29 },30};31 32static const struct snd_kcontrol_new card_controls[] = {33 SOC_DAPM_PIN_SWITCH("Left Spk"),34 SOC_DAPM_PIN_SWITCH("Right Spk"),35};36 37static const struct snd_soc_dapm_widget card_widgets[] = {38 SND_SOC_DAPM_SPK("Left Spk", NULL),39 SND_SOC_DAPM_SPK("Right Spk", NULL),40};41 42static const struct snd_soc_dapm_route card_base_routes[] = {43 { "Left Spk", NULL, "Left BE_OUT" },44 { "Right Spk", NULL, "Right BE_OUT" },45};46 47static int48avs_max98927_be_fixup(struct snd_soc_pcm_runtime *runrime, struct snd_pcm_hw_params *params)49{50 struct snd_interval *rate, *channels;51 struct snd_mask *fmt;52 53 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);54 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);55 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);56 57 /* The ADSP will convert the FE rate to 48k, stereo */58 rate->min = rate->max = 48000;59 channels->min = channels->max = 2;60 61 /* set SSP0 to 16 bit */62 snd_mask_none(fmt);63 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);64 return 0;65}66 67static int avs_max98927_hw_params(struct snd_pcm_substream *substream,68 struct snd_pcm_hw_params *params)69{70 struct snd_soc_pcm_runtime *runtime = snd_soc_substream_to_rtd(substream);71 struct snd_soc_dai *codec_dai;72 int ret = 0;73 int i;74 75 for_each_rtd_codec_dais(runtime, i, codec_dai) {76 if (!strcmp(codec_dai->component->name, MAX98927_DEV0_NAME))77 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x30, 3, 8, 16);78 else if (!strcmp(codec_dai->component->name, MAX98927_DEV1_NAME))79 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xC0, 3, 8, 16);80 81 if (ret < 0) {82 dev_err(runtime->dev, "hw_params for %s failed: %d\n",83 codec_dai->component->name, ret);84 return ret;85 }86 }87 88 return 0;89}90 91static const struct snd_soc_ops avs_max98927_ops = {92 .hw_params = avs_max98927_hw_params,93};94 95static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,96 int tdm_slot, struct snd_soc_dai_link **dai_link)97{98 struct snd_soc_dai_link_component *platform;99 struct snd_soc_dai_link *dl;100 101 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);102 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);103 if (!dl || !platform)104 return -ENOMEM;105 106 platform->name = platform_name;107 108 dl->name = devm_kasprintf(dev, GFP_KERNEL,109 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));110 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);111 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs) * 2, GFP_KERNEL);112 if (!dl->name || !dl->cpus || !dl->codecs)113 return -ENOMEM;114 115 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,116 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));117 dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV0_NAME);118 dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_CODEC_NAME);119 dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV1_NAME);120 dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_CODEC_NAME);121 if (!dl->cpus->dai_name || !dl->codecs[0].name || !dl->codecs[0].dai_name ||122 !dl->codecs[1].name || !dl->codecs[1].dai_name)123 return -ENOMEM;124 125 dl->num_cpus = 1;126 dl->num_codecs = 2;127 dl->platforms = platform;128 dl->num_platforms = 1;129 dl->id = 0;130 dl->dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;131 dl->be_hw_params_fixup = avs_max98927_be_fixup;132 dl->nonatomic = 1;133 dl->no_pcm = 1;134 dl->dpcm_capture = 1;135 dl->dpcm_playback = 1;136 dl->ignore_pmdown_time = 1;137 dl->ops = &avs_max98927_ops;138 139 *dai_link = dl;140 141 return 0;142}143 144static int avs_max98927_probe(struct platform_device *pdev)145{146 struct snd_soc_dai_link *dai_link;147 struct snd_soc_acpi_mach *mach;148 struct snd_soc_card *card;149 struct device *dev = &pdev->dev;150 const char *pname;151 int ssp_port, tdm_slot, ret;152 153 mach = dev_get_platdata(dev);154 pname = mach->mach_params.platform;155 156 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);157 if (ret)158 return ret;159 160 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link);161 if (ret) {162 dev_err(dev, "Failed to create dai link: %d", ret);163 return ret;164 }165 166 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);167 if (!card)168 return -ENOMEM;169 170 card->name = "avs_max98927";171 card->dev = dev;172 card->owner = THIS_MODULE;173 card->dai_link = dai_link;174 card->num_links = 1;175 card->codec_conf = card_codec_conf;176 card->num_configs = ARRAY_SIZE(card_codec_conf);177 card->controls = card_controls;178 card->num_controls = ARRAY_SIZE(card_controls);179 card->dapm_widgets = card_widgets;180 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);181 card->dapm_routes = card_base_routes;182 card->num_dapm_routes = ARRAY_SIZE(card_base_routes);183 card->fully_routed = true;184 185 ret = snd_soc_fixup_dai_links_platform_name(card, pname);186 if (ret)187 return ret;188 189 return devm_snd_soc_register_card(dev, card);190}191 192static const struct platform_device_id avs_max98927_driver_ids[] = {193 {194 .name = "avs_max98927",195 },196 {},197};198MODULE_DEVICE_TABLE(platform, avs_max98927_driver_ids);199 200static struct platform_driver avs_max98927_driver = {201 .probe = avs_max98927_probe,202 .driver = {203 .name = "avs_max98927",204 .pm = &snd_soc_pm_ops,205 },206 .id_table = avs_max98927_driver_ids,207};208 209module_platform_driver(avs_max98927_driver)210 211MODULE_DESCRIPTION("Intel max98927 machine driver");212MODULE_LICENSE("GPL");213