1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2021-2022 Intel Corporation
4 //
5 // Authors: Cezary Rojewski <cezary.rojewski@intel.com>
6 // Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
7 //
8
9 #include <linux/input.h>
10 #include <linux/module.h>
11 #include <linux/platform_device.h>
12 #include <sound/core.h>
13 #include <sound/jack.h>
14 #include <sound/pcm.h>
15 #include <sound/pcm_params.h>
16 #include <sound/soc.h>
17 #include <sound/soc-acpi.h>
18 #include "../../../codecs/nau8825.h"
19 #include "../utils.h"
20
21 #define SKL_NUVOTON_CODEC_DAI "nau8825-hifi"
22
23 static int
24 avs_nau8825_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *control, int event)
25 {
26 struct snd_soc_dapm_context *dapm = w->dapm;
27 struct snd_soc_card *card = dapm->card;
28 struct snd_soc_dai *codec_dai;
29 int ret;
30
31 codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI);
32 if (!codec_dai) {
33 dev_err(card->dev, "Codec dai not found\n");
34 return -EINVAL;
35 }
36
37 if (SND_SOC_DAPM_EVENT_ON(event))
38 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_MCLK, 24000000,
39 SND_SOC_CLOCK_IN);
40 else
41 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_INTERNAL, 0, SND_SOC_CLOCK_IN);
42 if (ret < 0)
43 dev_err(card->dev, "Set sysclk failed: %d\n", ret);
44
45 return ret;
46 }
47
48 static const struct snd_kcontrol_new card_controls[] = {
49 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
50 SOC_DAPM_PIN_SWITCH("Headset Mic"),
51 };
52
53 static const struct snd_soc_dapm_widget card_widgets[] = {
54 SND_SOC_DAPM_HP("Headphone Jack", NULL),
55 SND_SOC_DAPM_MIC("Headset Mic", NULL),
56 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, avs_nau8825_clock_control,
57 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
58 };
59
60 static const struct snd_soc_dapm_route card_base_routes[] = {
61 { "Headphone Jack", NULL, "HPOL" },
62 { "Headphone Jack", NULL, "HPOR" },
63
64 { "MIC", NULL, "Headset Mic" },
65
66 { "Headphone Jack", NULL, "Platform Clock" },
67 { "Headset Mic", NULL, "Platform Clock" },
68 };
69
70 static const struct snd_soc_jack_pin card_headset_pins[] = {
71 {
72 .pin = "Headphone Jack",
73 .mask = SND_JACK_HEADPHONE,
74 },
75 {
76 .pin = "Headset Mic",
77 .mask = SND_JACK_MICROPHONE,
78 },
79 };
80
81 static int avs_nau8825_codec_init(struct snd_soc_pcm_runtime *runtime)
82 {
83 struct snd_soc_card *card = runtime->card;
84 struct snd_soc_jack_pin *pins;
85 struct snd_soc_jack *jack;
86 int num_pins, ret;
87
88 jack = snd_soc_card_get_drvdata(card);
89 num_pins = ARRAY_SIZE(card_headset_pins);
90
91 pins = devm_kmemdup(card->dev, card_headset_pins, sizeof(*pins) * num_pins, GFP_KERNEL);
92 if (!pins)
93 return -ENOMEM;
94
95 /*
96 * 4 buttons here map to the google Reference headset.
97 * The use of these buttons can be decided by the user space.
98 */
99 ret = snd_soc_card_jack_new_pins(card, "Headset Jack", SND_JACK_HEADSET | SND_JACK_BTN_0 |
100 SND_JACK_BTN_1 | SND_JACK_BTN_2 | SND_JACK_BTN_3,
101 jack, pins, num_pins);
102 if (ret)
103 return ret;
104
105 snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
106 snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
107 snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
108 snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
109
110 return snd_soc_component_set_jack(snd_soc_rtd_to_codec(runtime, 0)->component, jack, NULL);
111 }
112
113 static void avs_nau8825_codec_exit(struct snd_soc_pcm_runtime *rtd)
114 {
115 snd_soc_component_set_jack(snd_soc_rtd_to_codec(rtd, 0)->component, NULL, NULL);
116 }
117
118 static int
119 avs_nau8825_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params)
120 {
121 struct snd_interval *rate, *channels;
122 struct snd_mask *fmt;
123
124 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
125 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
126 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
127
128 /* The ADSP will convert the FE rate to 48k, stereo */
129 rate->min = rate->max = 48000;
130 channels->min = channels->max = 2;
131
132 /* set SSP to 24 bit */
133 snd_mask_none(fmt);
134 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
135
136 return 0;
137 }
138
139 static int avs_nau8825_trigger(struct snd_pcm_substream *substream, int cmd)
140 {
141 struct snd_pcm_runtime *runtime = substream->runtime;
142 struct snd_soc_pcm_runtime *rtm = snd_soc_substream_to_rtd(substream);
143 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtm, 0);
144 int ret = 0;
145
146 switch (cmd) {
147 case SNDRV_PCM_TRIGGER_START:
148 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0, SND_SOC_CLOCK_IN);
149 if (ret < 0) {
150 dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);
151 break;
152 }
153
154 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate, runtime->rate * 256);
155 if (ret < 0)
156 dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
157 break;
158
159 case SNDRV_PCM_TRIGGER_RESUME:
160 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate, runtime->rate * 256);
161 if (ret < 0)
162 dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
163 break;
164 }
165
166 return ret;
167 }
168
169
170 static const struct snd_soc_ops avs_nau8825_ops = {
171 .trigger = avs_nau8825_trigger,
172 };
173
174 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
175 int tdm_slot, struct snd_soc_dai_link **dai_link)
176 {
177 struct snd_soc_dai_link_component *platform;
178 struct snd_soc_dai_link *dl;
179
180 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
181 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
182 if (!dl || !platform)
183 return -ENOMEM;
184
185 platform->name = platform_name;
186
187 dl->name = devm_kasprintf(dev, GFP_KERNEL,
188 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));
189 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
190 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
191 if (!dl->name || !dl->cpus || !dl->codecs)
192 return -ENOMEM;
193
194 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
195 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));
196 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-10508825:00");
197 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, SKL_NUVOTON_CODEC_DAI);
198 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
199 return -ENOMEM;
200
201 dl->num_cpus = 1;
202 dl->num_codecs = 1;
203 dl->platforms = platform;
204 dl->num_platforms = 1;
205 dl->id = 0;
206 dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
207 dl->init = avs_nau8825_codec_init;
208 dl->exit = avs_nau8825_codec_exit;
209 dl->be_hw_params_fixup = avs_nau8825_be_fixup;
210 dl->ops = &avs_nau8825_ops;
211 dl->nonatomic = 1;
212 dl->no_pcm = 1;
213 dl->dpcm_capture = 1;
214 dl->dpcm_playback = 1;
215
216 *dai_link = dl;
217
218 return 0;
219 }
220
221 static int avs_card_suspend_pre(struct snd_soc_card *card)
222 {
223 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI);
224
225 return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
226 }
227
228 static int avs_card_resume_post(struct snd_soc_card *card)
229 {
230 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI);
231 struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card);
232 int stream = SNDRV_PCM_STREAM_PLAYBACK;
233
234 if (!codec_dai) {
235 dev_err(card->dev, "Codec dai not found\n");
236 return -EINVAL;
237 }
238
239 if (snd_soc_dai_stream_active(codec_dai, stream) &&
240 snd_soc_dai_get_widget(codec_dai, stream)->active)
241 snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0, SND_SOC_CLOCK_IN);
242
243 return snd_soc_component_set_jack(codec_dai->component, jack, NULL);
244 }
245
246 static int avs_nau8825_probe(struct platform_device *pdev)
247 {
248 struct snd_soc_dai_link *dai_link;
249 struct snd_soc_acpi_mach *mach;
250 struct snd_soc_card *card;
251 struct snd_soc_jack *jack;
252 struct device *dev = &pdev->dev;
253 const char *pname;
254 int ssp_port, tdm_slot, ret;
255
256 mach = dev_get_platdata(dev);
257 pname = mach->mach_params.platform;
258
259 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);
260 if (ret)
261 return ret;
262
263 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link);
264 if (ret) {
265 dev_err(dev, "Failed to create dai link: %d", ret);
266 return ret;
267 }
268
269 jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL);
270 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
271 if (!jack || !card)
272 return -ENOMEM;
273
274 card->name = "avs_nau8825";
275 card->dev = dev;
276 card->owner = THIS_MODULE;
277 card->suspend_pre = avs_card_suspend_pre;
278 card->resume_post = avs_card_resume_post;
279 card->dai_link = dai_link;
280 card->num_links = 1;
281 card->controls = card_controls;
282 card->num_controls = ARRAY_SIZE(card_controls);
283 card->dapm_widgets = card_widgets;
284 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
285 card->dapm_routes = card_base_routes;
286 card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
287 card->fully_routed = true;
288 snd_soc_card_set_drvdata(card, jack);
289
290 ret = snd_soc_fixup_dai_links_platform_name(card, pname);
291 if (ret)
292 return ret;
293
294 return devm_snd_soc_register_card(dev, card);
295 }
296
297 static const struct platform_device_id avs_nau8825_driver_ids[] = {
298 {
299 .name = "avs_nau8825",
300 },
301 {},
302 };
303 MODULE_DEVICE_TABLE(platform, avs_nau8825_driver_ids);
304
305 static struct platform_driver avs_nau8825_driver = {
306 .probe = avs_nau8825_probe,
307 .driver = {
308 .name = "avs_nau8825",
309 .pm = &snd_soc_pm_ops,
310 },
311 .id_table = avs_nau8825_driver_ids,
312 };
313
314 module_platform_driver(avs_nau8825_driver)
315
316 MODULE_DESCRIPTION("Intel nau8825 machine driver");
317 MODULE_LICENSE("GPL");
318
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