1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2022 Intel Corporation. All rights reserved.
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
16 #define MAX98373_DEV0_NAME "i2c-MX98373:00"
17 #define MAX98373_DEV1_NAME "i2c-MX98373:01"
18 #define MAX98373_CODEC_NAME "max98373-aif1"
19
20 static struct snd_soc_codec_conf card_codec_conf[] = {
21 {
22 .dlc = COMP_CODEC_CONF(MAX98373_DEV0_NAME),
23 .name_prefix = "Right",
24 },
25 {
26 .dlc = COMP_CODEC_CONF(MAX98373_DEV1_NAME),
27 .name_prefix = "Left",
28 },
29 };
30
31 static const struct snd_kcontrol_new card_controls[] = {
32 SOC_DAPM_PIN_SWITCH("Left Spk"),
33 SOC_DAPM_PIN_SWITCH("Right Spk"),
34 };
35
36 static const struct snd_soc_dapm_widget card_widgets[] = {
37 SND_SOC_DAPM_SPK("Left Spk", NULL),
38 SND_SOC_DAPM_SPK("Right Spk", NULL),
39 };
40
41 static const struct snd_soc_dapm_route card_base_routes[] = {
42 { "Left Spk", NULL, "Left BE_OUT" },
43 { "Right Spk", NULL, "Right BE_OUT" },
44 };
45
46 static int
avs_max98373_be_fixup(struct snd_soc_pcm_runtime * runrime,struct snd_pcm_hw_params * params)47 avs_max98373_be_fixup(struct snd_soc_pcm_runtime *runrime, struct snd_pcm_hw_params *params)
48 {
49 struct snd_interval *rate, *channels;
50 struct snd_mask *fmt;
51
52 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
53 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
54 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
55
56 /* The ADSP will convert the FE rate to 48k, stereo */
57 rate->min = rate->max = 48000;
58 channels->min = channels->max = 2;
59
60 /* set SSP0 to 16 bit */
61 snd_mask_none(fmt);
62 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
63 return 0;
64 }
65
avs_max98373_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)66 static int avs_max98373_hw_params(struct snd_pcm_substream *substream,
67 struct snd_pcm_hw_params *params)
68 {
69 struct snd_soc_pcm_runtime *runtime = asoc_substream_to_rtd(substream);
70 struct snd_soc_dai *codec_dai;
71 int ret, i;
72
73 for_each_rtd_codec_dais(runtime, i, codec_dai) {
74 if (!strcmp(codec_dai->component->name, MAX98373_DEV0_NAME)) {
75 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x30, 3, 8, 16);
76 if (ret < 0) {
77 dev_err(runtime->dev, "DEV0 TDM slot err:%d\n", ret);
78 return ret;
79 }
80 }
81 if (!strcmp(codec_dai->component->name, MAX98373_DEV1_NAME)) {
82 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xC0, 3, 8, 16);
83 if (ret < 0) {
84 dev_err(runtime->dev, "DEV1 TDM slot err:%d\n", ret);
85 return ret;
86 }
87 }
88 }
89
90 return 0;
91 }
92
93 static const struct snd_soc_ops avs_max98373_ops = {
94 .hw_params = avs_max98373_hw_params,
95 };
96
avs_create_dai_link(struct device * dev,const char * platform_name,int ssp_port,struct snd_soc_dai_link ** dai_link)97 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
98 struct snd_soc_dai_link **dai_link)
99 {
100 struct snd_soc_dai_link_component *platform;
101 struct snd_soc_dai_link *dl;
102
103 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
104 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
105 if (!dl || !platform)
106 return -ENOMEM;
107
108 platform->name = platform_name;
109
110 dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
111 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
112 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs) * 2, GFP_KERNEL);
113 if (!dl->name || !dl->cpus || !dl->codecs)
114 return -ENOMEM;
115
116 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
117 dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_DEV0_NAME);
118 dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_CODEC_NAME);
119 dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_DEV1_NAME);
120 dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_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_CBC_CFC;
131 dl->be_hw_params_fixup = avs_max98373_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_max98373_ops;
138
139 *dai_link = dl;
140
141 return 0;
142 }
143
avs_max98373_probe(struct platform_device * pdev)144 static 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 snd_soc_card *card;
149 struct device *dev = &pdev->dev;
150 const char *pname;
151 int ssp_port, ret;
152
153 mach = dev_get_platdata(dev);
154 pname = mach->mach_params.platform;
155 ssp_port = __ffs(mach->mach_params.i2s_link_mask);
156
157 ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
158 if (ret) {
159 dev_err(dev, "Failed to create dai link: %d", ret);
160 return ret;
161 }
162
163 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
164 if (!card)
165 return -ENOMEM;
166
167 card->name = "avs_max98373";
168 card->dev = dev;
169 card->owner = THIS_MODULE;
170 card->dai_link = dai_link;
171 card->num_links = 1;
172 card->codec_conf = card_codec_conf;
173 card->num_configs = ARRAY_SIZE(card_codec_conf);
174 card->controls = card_controls;
175 card->num_controls = ARRAY_SIZE(card_controls);
176 card->dapm_widgets = card_widgets;
177 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
178 card->dapm_routes = card_base_routes;
179 card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
180 card->fully_routed = true;
181
182 ret = snd_soc_fixup_dai_links_platform_name(card, pname);
183 if (ret)
184 return ret;
185
186 return devm_snd_soc_register_card(dev, card);
187 }
188
189 static struct platform_driver avs_max98373_driver = {
190 .probe = avs_max98373_probe,
191 .driver = {
192 .name = "avs_max98373",
193 .pm = &snd_soc_pm_ops,
194 },
195 };
196
197 module_platform_driver(avs_max98373_driver)
198
199 MODULE_LICENSE("GPL");
200 MODULE_ALIAS("platform:avs_max98373");
201