max98373.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2//
  3// Copyright(c) 2022 Intel Corporation
  4//
  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 MAX98373_DEV0_NAME	"i2c-MX98373:00"
 18#define MAX98373_DEV1_NAME	"i2c-MX98373:01"
 19#define MAX98373_CODEC_NAME	"max98373-aif1"
 20
 21static struct snd_soc_codec_conf card_codec_conf[] = {
 22	{
 23		.dlc = COMP_CODEC_CONF(MAX98373_DEV0_NAME),
 24		.name_prefix = "Right",
 25	},
 26	{
 27		.dlc = COMP_CODEC_CONF(MAX98373_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 int
 48avs_max98373_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_max98373_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, i;
 73
 74	for_each_rtd_codec_dais(runtime, i, codec_dai) {
 75		if (!strcmp(codec_dai->component->name, MAX98373_DEV0_NAME)) {
 76			ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x30, 3, 8, 16);
 77			if (ret < 0) {
 78				dev_err(runtime->dev, "DEV0 TDM slot err:%d\n", ret);
 79				return ret;
 80			}
 81		}
 82		if (!strcmp(codec_dai->component->name, MAX98373_DEV1_NAME)) {
 83			ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xC0, 3, 8, 16);
 84			if (ret < 0) {
 85				dev_err(runtime->dev, "DEV1 TDM slot err:%d\n", ret);
 86				return ret;
 87			}
 88		}
 89	}
 90
 91	return 0;
 92}
 93
 94static const struct snd_soc_ops avs_max98373_ops = {
 95	.hw_params = avs_max98373_hw_params,
 96};
 97
 98static int avs_create_dai_link(struct device *dev, int ssp_port, int tdm_slot,
 99			       struct snd_soc_dai_link **dai_link)
100{
101	struct snd_soc_dai_link_component *platform;
102	struct snd_soc_dai_link *dl;
103
104	dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
105	platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
106	if (!dl || !platform)
107		return -ENOMEM;
108
109	dl->name = devm_kasprintf(dev, GFP_KERNEL,
110				  AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));
111	dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
112	dl->codecs = devm_kcalloc(dev, 2, sizeof(*dl->codecs), GFP_KERNEL);
113	if (!dl->name || !dl->cpus || !dl->codecs)
114		return -ENOMEM;
115
116	dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
117					    AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));
118	dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_DEV0_NAME);
119	dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_CODEC_NAME);
120	dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_DEV1_NAME);
121	dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_CODEC_NAME);
122	if (!dl->cpus->dai_name || !dl->codecs[0].name || !dl->codecs[0].dai_name ||
123	    !dl->codecs[1].name || !dl->codecs[1].dai_name)
124		return -ENOMEM;
125
126	platform->name = dev_name(dev);
127	dl->num_cpus = 1;
128	dl->num_codecs = 2;
129	dl->platforms = platform;
130	dl->num_platforms = 1;
131	dl->id = 0;
132	dl->dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC;
133	dl->be_hw_params_fixup = avs_max98373_be_fixup;
134	dl->nonatomic = 1;
135	dl->no_pcm = 1;
136	dl->ignore_pmdown_time = 1;
137	dl->ops = &avs_max98373_ops;
138
139	*dai_link = dl;
140
141	return 0;
142}
143
144static int avs_max98373_probe(struct platform_device *pdev)
145{
146	struct snd_soc_dai_link *dai_link;
147	struct snd_soc_acpi_mach *mach;
148	struct avs_mach_pdata *pdata;
149	struct snd_soc_card *card;
150	struct device *dev = &pdev->dev;
151	int ssp_port, tdm_slot, ret;
152
153	mach = dev_get_platdata(dev);
154	pdata = mach->pdata;
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, 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	if (pdata->obsolete_card_names) {
171		card->name = "avs_max98373";
172	} else {
173		card->driver_name = "avs_max98373";
174		card->long_name = card->name = "AVS I2S MAX98373";
175	}
176	card->dev = dev;
177	card->owner = THIS_MODULE;
178	card->dai_link = dai_link;
179	card->num_links = 1;
180	card->codec_conf = card_codec_conf;
181	card->num_configs = ARRAY_SIZE(card_codec_conf);
182	card->controls = card_controls;
183	card->num_controls = ARRAY_SIZE(card_controls);
184	card->dapm_widgets = card_widgets;
185	card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
186	card->dapm_routes = card_base_routes;
187	card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
188	card->fully_routed = true;
189
190	return devm_snd_soc_register_deferrable_card(dev, card);
191}
192
193static const struct platform_device_id avs_max98373_driver_ids[] = {
194	{
195		.name = "avs_max98373",
196	},
197	{},
198};
199MODULE_DEVICE_TABLE(platform, avs_max98373_driver_ids);
200
201static struct platform_driver avs_max98373_driver = {
202	.probe = avs_max98373_probe,
203	.driver = {
204		.name = "avs_max98373",
205		.pm = &snd_soc_pm_ops,
206	},
207	.id_table = avs_max98373_driver_ids,
208};
209
210module_platform_driver(avs_max98373_driver)
211
212MODULE_DESCRIPTION("Intel max98373 machine driver");
213MODULE_LICENSE("GPL");