1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2021-2022 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/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
20 #define SKL_NUVOTON_CODEC_DAI "nau8825-hifi"
21
22 static int
avs_nau8825_clock_control(struct snd_soc_dapm_widget * w,struct snd_kcontrol * control,int event)23 avs_nau8825_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *control, int event)
24 {
25 struct snd_soc_dapm_context *dapm = w->dapm;
26 struct snd_soc_card *card = dapm->card;
27 struct snd_soc_dai *codec_dai;
28 int ret;
29
30 codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI);
31 if (!codec_dai) {
32 dev_err(card->dev, "Codec dai not found\n");
33 return -EINVAL;
34 }
35
36 if (SND_SOC_DAPM_EVENT_ON(event))
37 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_MCLK, 24000000,
38 SND_SOC_CLOCK_IN);
39 else
40 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_INTERNAL, 0, SND_SOC_CLOCK_IN);
41 if (ret < 0)
42 dev_err(card->dev, "Set sysclk failed: %d\n", ret);
43
44 return ret;
45 }
46
47 static const struct snd_kcontrol_new card_controls[] = {
48 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
49 SOC_DAPM_PIN_SWITCH("Headset Mic"),
50 };
51
52 static const struct snd_soc_dapm_widget card_widgets[] = {
53 SND_SOC_DAPM_HP("Headphone Jack", NULL),
54 SND_SOC_DAPM_MIC("Headset Mic", NULL),
55 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, avs_nau8825_clock_control,
56 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
57 };
58
59 static const struct snd_soc_dapm_route card_base_routes[] = {
60 { "Headphone Jack", NULL, "HPOL" },
61 { "Headphone Jack", NULL, "HPOR" },
62
63 { "MIC", NULL, "Headset Mic" },
64
65 { "Headphone Jack", NULL, "Platform Clock" },
66 { "Headset Mic", NULL, "Platform Clock" },
67 };
68
69 static struct snd_soc_jack_pin card_headset_pins[] = {
70 {
71 .pin = "Headphone Jack",
72 .mask = SND_JACK_HEADPHONE,
73 },
74 {
75 .pin = "Headset Mic",
76 .mask = SND_JACK_MICROPHONE,
77 },
78 };
79
avs_nau8825_codec_init(struct snd_soc_pcm_runtime * runtime)80 static int avs_nau8825_codec_init(struct snd_soc_pcm_runtime *runtime)
81 {
82 struct snd_soc_card *card = runtime->card;
83 struct snd_soc_jack_pin *pins;
84 struct snd_soc_jack *jack;
85 int num_pins, ret;
86
87 jack = snd_soc_card_get_drvdata(card);
88 num_pins = ARRAY_SIZE(card_headset_pins);
89
90 pins = devm_kmemdup(card->dev, card_headset_pins, sizeof(*pins) * num_pins, GFP_KERNEL);
91 if (!pins)
92 return -ENOMEM;
93
94 /*
95 * 4 buttons here map to the google Reference headset.
96 * The use of these buttons can be decided by the user space.
97 */
98 ret = snd_soc_card_jack_new_pins(card, "Headset", SND_JACK_HEADSET | SND_JACK_BTN_0 |
99 SND_JACK_BTN_1 | SND_JACK_BTN_2 | SND_JACK_BTN_3,
100 jack, pins, num_pins);
101 if (ret)
102 return ret;
103
104 snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
105 snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
106 snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
107 snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
108
109 return snd_soc_component_set_jack(asoc_rtd_to_codec(runtime, 0)->component, jack, NULL);
110 }
111
avs_nau8825_codec_exit(struct snd_soc_pcm_runtime * rtd)112 static void avs_nau8825_codec_exit(struct snd_soc_pcm_runtime *rtd)
113 {
114 snd_soc_component_set_jack(asoc_rtd_to_codec(rtd, 0)->component, NULL, NULL);
115 }
116
117 static int
avs_nau8825_be_fixup(struct snd_soc_pcm_runtime * runtime,struct snd_pcm_hw_params * params)118 avs_nau8825_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params)
119 {
120 struct snd_interval *rate, *channels;
121 struct snd_mask *fmt;
122
123 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
124 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
125 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
126
127 /* The ADSP will convert the FE rate to 48k, stereo */
128 rate->min = rate->max = 48000;
129 channels->min = channels->max = 2;
130
131 /* set SSP to 24 bit */
132 snd_mask_none(fmt);
133 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
134
135 return 0;
136 }
137
avs_nau8825_trigger(struct snd_pcm_substream * substream,int cmd)138 static int avs_nau8825_trigger(struct snd_pcm_substream *substream, int cmd)
139 {
140 struct snd_pcm_runtime *runtime = substream->runtime;
141 struct snd_soc_pcm_runtime *rtm = asoc_substream_to_rtd(substream);
142 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtm, 0);
143 int ret = 0;
144
145 switch (cmd) {
146 case SNDRV_PCM_TRIGGER_START:
147 ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0, SND_SOC_CLOCK_IN);
148 if (ret < 0) {
149 dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);
150 break;
151 }
152
153 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate, runtime->rate * 256);
154 if (ret < 0)
155 dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
156 break;
157
158 case SNDRV_PCM_TRIGGER_RESUME:
159 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, runtime->rate, runtime->rate * 256);
160 if (ret < 0)
161 dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
162 break;
163 }
164
165 return ret;
166 }
167
168
169 static const struct snd_soc_ops avs_nau8825_ops = {
170 .trigger = avs_nau8825_trigger,
171 };
172
avs_create_dai_link(struct device * dev,const char * platform_name,int ssp_port,struct snd_soc_dai_link ** dai_link)173 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
174 struct snd_soc_dai_link **dai_link)
175 {
176 struct snd_soc_dai_link_component *platform;
177 struct snd_soc_dai_link *dl;
178
179 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
180 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
181 if (!dl || !platform)
182 return -ENOMEM;
183
184 platform->name = platform_name;
185
186 dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
187 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
188 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
189 if (!dl->name || !dl->cpus || !dl->codecs)
190 return -ENOMEM;
191
192 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
193 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-10508825:00");
194 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, SKL_NUVOTON_CODEC_DAI);
195 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
196 return -ENOMEM;
197
198 dl->num_cpus = 1;
199 dl->num_codecs = 1;
200 dl->platforms = platform;
201 dl->num_platforms = 1;
202 dl->id = 0;
203 dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
204 dl->init = avs_nau8825_codec_init;
205 dl->exit = avs_nau8825_codec_exit;
206 dl->be_hw_params_fixup = avs_nau8825_be_fixup;
207 dl->ops = &avs_nau8825_ops;
208 dl->nonatomic = 1;
209 dl->no_pcm = 1;
210 dl->dpcm_capture = 1;
211 dl->dpcm_playback = 1;
212
213 *dai_link = dl;
214
215 return 0;
216 }
217
avs_card_suspend_pre(struct snd_soc_card * card)218 static int avs_card_suspend_pre(struct snd_soc_card *card)
219 {
220 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI);
221
222 return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
223 }
224
avs_card_resume_post(struct snd_soc_card * card)225 static int avs_card_resume_post(struct snd_soc_card *card)
226 {
227 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, SKL_NUVOTON_CODEC_DAI);
228 struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card);
229 int stream = SNDRV_PCM_STREAM_PLAYBACK;
230
231 if (!codec_dai) {
232 dev_err(card->dev, "Codec dai not found\n");
233 return -EINVAL;
234 }
235
236 if (snd_soc_dai_stream_active(codec_dai, stream) &&
237 snd_soc_dai_get_widget(codec_dai, stream)->active)
238 snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_FLL_FS, 0, SND_SOC_CLOCK_IN);
239
240 return snd_soc_component_set_jack(codec_dai->component, jack, NULL);
241 }
242
avs_nau8825_probe(struct platform_device * pdev)243 static int avs_nau8825_probe(struct platform_device *pdev)
244 {
245 struct snd_soc_dai_link *dai_link;
246 struct snd_soc_acpi_mach *mach;
247 struct snd_soc_card *card;
248 struct snd_soc_jack *jack;
249 struct device *dev = &pdev->dev;
250 const char *pname;
251 int ssp_port, ret;
252
253 mach = dev_get_platdata(dev);
254 pname = mach->mach_params.platform;
255 ssp_port = __ffs(mach->mach_params.i2s_link_mask);
256
257 ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
258 if (ret) {
259 dev_err(dev, "Failed to create dai link: %d", ret);
260 return ret;
261 }
262
263 jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL);
264 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
265 if (!jack || !card)
266 return -ENOMEM;
267
268 card->name = "avs_nau8825";
269 card->dev = dev;
270 card->owner = THIS_MODULE;
271 card->suspend_pre = avs_card_suspend_pre;
272 card->resume_post = avs_card_resume_post;
273 card->dai_link = dai_link;
274 card->num_links = 1;
275 card->controls = card_controls;
276 card->num_controls = ARRAY_SIZE(card_controls);
277 card->dapm_widgets = card_widgets;
278 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
279 card->dapm_routes = card_base_routes;
280 card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
281 card->fully_routed = true;
282 snd_soc_card_set_drvdata(card, jack);
283
284 ret = snd_soc_fixup_dai_links_platform_name(card, pname);
285 if (ret)
286 return ret;
287
288 return devm_snd_soc_register_card(dev, card);
289 }
290
291 static struct platform_driver avs_nau8825_driver = {
292 .probe = avs_nau8825_probe,
293 .driver = {
294 .name = "avs_nau8825",
295 .pm = &snd_soc_pm_ops,
296 },
297 };
298
299 module_platform_driver(avs_nau8825_driver)
300
301 MODULE_LICENSE("GPL");
302 MODULE_ALIAS("platform:avs_nau8825");
303