159 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2//3// Copyright(c) 2021-2022 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 17static const struct snd_kcontrol_new card_controls[] = {18 SOC_DAPM_PIN_SWITCH("Spk"),19};20 21static const struct snd_soc_dapm_widget card_widgets[] = {22 SND_SOC_DAPM_SPK("Spk", NULL),23};24 25static const struct snd_soc_dapm_route card_base_routes[] = {26 { "Spk", NULL, "Speaker" },27};28 29static int30avs_max98357a_be_fixup(struct snd_soc_pcm_runtime *runrime, struct snd_pcm_hw_params *params)31{32 struct snd_interval *rate, *channels;33 struct snd_mask *fmt;34 35 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);36 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);37 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);38 39 /* The ADSP will convert the FE rate to 48k, stereo */40 rate->min = rate->max = 48000;41 channels->min = channels->max = 2;42 43 /* set SSP0 to 16 bit */44 snd_mask_none(fmt);45 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);46 return 0;47}48 49static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,50 int tdm_slot, struct snd_soc_dai_link **dai_link)51{52 struct snd_soc_dai_link_component *platform;53 struct snd_soc_dai_link *dl;54 55 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);56 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);57 if (!dl || !platform)58 return -ENOMEM;59 60 platform->name = platform_name;61 62 dl->name = devm_kasprintf(dev, GFP_KERNEL,63 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));64 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);65 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);66 if (!dl->name || !dl->cpus || !dl->codecs)67 return -ENOMEM;68 69 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,70 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));71 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "MX98357A:00");72 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, "HiFi");73 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)74 return -ENOMEM;75 76 dl->num_cpus = 1;77 dl->num_codecs = 1;78 dl->platforms = platform;79 dl->num_platforms = 1;80 dl->id = 0;81 dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;82 dl->be_hw_params_fixup = avs_max98357a_be_fixup;83 dl->nonatomic = 1;84 dl->no_pcm = 1;85 dl->dpcm_playback = 1;86 87 *dai_link = dl;88 89 return 0;90}91 92static int avs_max98357a_probe(struct platform_device *pdev)93{94 struct snd_soc_dai_link *dai_link;95 struct snd_soc_acpi_mach *mach;96 struct snd_soc_card *card;97 struct device *dev = &pdev->dev;98 const char *pname;99 int ssp_port, tdm_slot, ret;100 101 mach = dev_get_platdata(dev);102 pname = mach->mach_params.platform;103 104 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);105 if (ret)106 return ret;107 108 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link);109 if (ret) {110 dev_err(dev, "Failed to create dai link: %d", ret);111 return ret;112 }113 114 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);115 if (!card)116 return -ENOMEM;117 118 card->name = "avs_max98357a";119 card->dev = dev;120 card->owner = THIS_MODULE;121 card->dai_link = dai_link;122 card->num_links = 1;123 card->controls = card_controls;124 card->num_controls = ARRAY_SIZE(card_controls);125 card->dapm_widgets = card_widgets;126 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);127 card->dapm_routes = card_base_routes;128 card->num_dapm_routes = ARRAY_SIZE(card_base_routes);129 card->fully_routed = true;130 131 ret = snd_soc_fixup_dai_links_platform_name(card, pname);132 if (ret)133 return ret;134 135 return devm_snd_soc_register_card(dev, card);136}137 138static const struct platform_device_id avs_max98357a_driver_ids[] = {139 {140 .name = "avs_max98357a",141 },142 {},143};144MODULE_DEVICE_TABLE(platform, avs_max98357a_driver_ids);145 146static struct platform_driver avs_max98357a_driver = {147 .probe = avs_max98357a_probe,148 .driver = {149 .name = "avs_max98357a",150 .pm = &snd_soc_pm_ops,151 },152 .id_table = avs_max98357a_driver_ids,153};154 155module_platform_driver(avs_max98357a_driver)156 157MODULE_DESCRIPTION("Intel max98357a machine driver");158MODULE_LICENSE("GPL");159