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 MAX98927_DEV0_NAME "i2c-MX98927:00"
17 #define MAX98927_DEV1_NAME "i2c-MX98927:01"
18 #define MAX98927_CODEC_NAME "max98927-aif1"
19
20 static struct snd_soc_codec_conf card_codec_conf[] = {
21 {
22 .dlc = COMP_CODEC_CONF(MAX98927_DEV0_NAME),
23 .name_prefix = "Right",
24 },
25 {
26 .dlc = COMP_CODEC_CONF(MAX98927_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_max98927_be_fixup(struct snd_soc_pcm_runtime * runrime,struct snd_pcm_hw_params * params)47 avs_max98927_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_max98927_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)66 static int avs_max98927_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 = 0;
72 int i;
73
74 for_each_rtd_codec_dais(runtime, i, codec_dai) {
75 if (!strcmp(codec_dai->component->name, MAX98927_DEV0_NAME))
76 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x30, 3, 8, 16);
77 else if (!strcmp(codec_dai->component->name, MAX98927_DEV1_NAME))
78 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xC0, 3, 8, 16);
79
80 if (ret < 0) {
81 dev_err(runtime->dev, "hw_params for %s failed: %d\n",
82 codec_dai->component->name, ret);
83 return ret;
84 }
85 }
86
87 return 0;
88 }
89
90 static const struct snd_soc_ops avs_max98927_ops = {
91 .hw_params = avs_max98927_hw_params,
92 };
93
avs_create_dai_link(struct device * dev,const char * platform_name,int ssp_port,struct snd_soc_dai_link ** dai_link)94 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
95 struct snd_soc_dai_link **dai_link)
96 {
97 struct snd_soc_dai_link_component *platform;
98 struct snd_soc_dai_link *dl;
99
100 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
101 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
102 if (!dl || !platform)
103 return -ENOMEM;
104
105 platform->name = platform_name;
106
107 dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
108 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
109 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs) * 2, GFP_KERNEL);
110 if (!dl->name || !dl->cpus || !dl->codecs)
111 return -ENOMEM;
112
113 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
114 dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV0_NAME);
115 dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_CODEC_NAME);
116 dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV1_NAME);
117 dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_CODEC_NAME);
118 if (!dl->cpus->dai_name || !dl->codecs[0].name || !dl->codecs[0].dai_name ||
119 !dl->codecs[1].name || !dl->codecs[1].dai_name)
120 return -ENOMEM;
121
122 dl->num_cpus = 1;
123 dl->num_codecs = 2;
124 dl->platforms = platform;
125 dl->num_platforms = 1;
126 dl->id = 0;
127 dl->dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
128 dl->be_hw_params_fixup = avs_max98927_be_fixup;
129 dl->nonatomic = 1;
130 dl->no_pcm = 1;
131 dl->dpcm_capture = 1;
132 dl->dpcm_playback = 1;
133 dl->ignore_pmdown_time = 1;
134 dl->ops = &avs_max98927_ops;
135
136 *dai_link = dl;
137
138 return 0;
139 }
140
avs_max98927_probe(struct platform_device * pdev)141 static int avs_max98927_probe(struct platform_device *pdev)
142 {
143 struct snd_soc_dai_link *dai_link;
144 struct snd_soc_acpi_mach *mach;
145 struct snd_soc_card *card;
146 struct device *dev = &pdev->dev;
147 const char *pname;
148 int ssp_port, ret;
149
150 mach = dev_get_platdata(dev);
151 pname = mach->mach_params.platform;
152 ssp_port = __ffs(mach->mach_params.i2s_link_mask);
153
154 ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
155 if (ret) {
156 dev_err(dev, "Failed to create dai link: %d", ret);
157 return ret;
158 }
159
160 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
161 if (!card)
162 return -ENOMEM;
163
164 card->name = "avs_max98927";
165 card->dev = dev;
166 card->owner = THIS_MODULE;
167 card->dai_link = dai_link;
168 card->num_links = 1;
169 card->codec_conf = card_codec_conf;
170 card->num_configs = ARRAY_SIZE(card_codec_conf);
171 card->controls = card_controls;
172 card->num_controls = ARRAY_SIZE(card_controls);
173 card->dapm_widgets = card_widgets;
174 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
175 card->dapm_routes = card_base_routes;
176 card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
177 card->fully_routed = true;
178
179 ret = snd_soc_fixup_dai_links_platform_name(card, pname);
180 if (ret)
181 return ret;
182
183 return devm_snd_soc_register_card(dev, card);
184 }
185
186 static struct platform_driver avs_max98927_driver = {
187 .probe = avs_max98927_probe,
188 .driver = {
189 .name = "avs_max98927",
190 .pm = &snd_soc_pm_ops,
191 },
192 };
193
194 module_platform_driver(avs_max98927_driver)
195
196 MODULE_LICENSE("GPL");
197 MODULE_ALIAS("platform:avs_max98927");
198