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(mask: fmt);
63 snd_mask_set_format(mask: 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(dai: codec_dai, tx_mask: 0x30, rx_mask: 3, slots: 8, slot_width: 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(dai: codec_dai, tx_mask: 0xC0, rx_mask: 3, slots: 8, slot_width: 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, size: sizeof(*dl), GFP_KERNEL);
105 platform = devm_kzalloc(dev, size: 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, size: sizeof(*dl->cpus), GFP_KERNEL);
112 dl->codecs = devm_kcalloc(dev, n: 2, size: 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: &ssp_port, tdm_slot: &tdm_slot);
157 if (ret)
158 return ret;
159
160 ret = avs_create_dai_link(dev, ssp_port, tdm_slot, dai_link: &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, size: 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");
214

source code of linux/sound/soc/intel/avs/boards/max98373.c