nau8825.c

  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
 23static int
 24avs_nau8825_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *control, int event)
 25{
 26	struct snd_soc_card *card = snd_soc_dapm_to_card(w->dapm);
 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
 47static const struct snd_kcontrol_new card_controls[] = {
 48	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
 49	SOC_DAPM_PIN_SWITCH("Headset Mic"),
 50};
 51
 52static 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
 59static 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
 69static const 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
 80static 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_array(card->dev, card_headset_pins, num_pins,
 91				  sizeof(card_headset_pins[0]), 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
113static 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
118static int
119avs_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
139static 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
170static const struct snd_soc_ops avs_nau8825_ops = {
171	.trigger = avs_nau8825_trigger,
172};
173
174static int avs_create_dai_link(struct device *dev, int ssp_port, int tdm_slot,
175			       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	dl->name = devm_kasprintf(dev, GFP_KERNEL,
186				  AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));
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,
193					    AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));
194	dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-10508825:00");
195	dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, SKL_NUVOTON_CODEC_DAI);
196	if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
197		return -ENOMEM;
198
199	platform->name = dev_name(dev);
200	dl->num_cpus = 1;
201	dl->num_codecs = 1;
202	dl->platforms = platform;
203	dl->num_platforms = 1;
204	dl->id = 0;
205	dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC;
206	dl->init = avs_nau8825_codec_init;
207	dl->exit = avs_nau8825_codec_exit;
208	dl->be_hw_params_fixup = avs_nau8825_be_fixup;
209	dl->ops = &avs_nau8825_ops;
210	dl->nonatomic = 1;
211	dl->no_pcm = 1;
212
213	*dai_link = dl;
214
215	return 0;
216}
217
218static 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
225static 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
243static 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 avs_mach_pdata *pdata;
248	struct snd_soc_card *card;
249	struct snd_soc_jack *jack;
250	struct device *dev = &pdev->dev;
251	int ssp_port, tdm_slot, ret;
252
253	mach = dev_get_platdata(dev);
254	pdata = mach->pdata;
255
256	ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);
257	if (ret)
258		return ret;
259
260	ret = avs_create_dai_link(dev, ssp_port, tdm_slot, &dai_link);
261	if (ret) {
262		dev_err(dev, "Failed to create dai link: %d", ret);
263		return ret;
264	}
265
266	jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL);
267	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
268	if (!jack || !card)
269		return -ENOMEM;
270
271	if (pdata->obsolete_card_names) {
272		card->name = "avs_nau8825";
273	} else {
274		card->driver_name = "avs_nau8825";
275		card->long_name = card->name = "AVS I2S NAU8825";
276	}
277	card->dev = dev;
278	card->owner = THIS_MODULE;
279	card->suspend_pre = avs_card_suspend_pre;
280	card->resume_post = avs_card_resume_post;
281	card->dai_link = dai_link;
282	card->num_links = 1;
283	card->controls = card_controls;
284	card->num_controls = ARRAY_SIZE(card_controls);
285	card->dapm_widgets = card_widgets;
286	card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
287	card->dapm_routes = card_base_routes;
288	card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
289	card->fully_routed = true;
290	snd_soc_card_set_drvdata(card, jack);
291
292	return devm_snd_soc_register_deferrable_card(dev, card);
293}
294
295static const struct platform_device_id avs_nau8825_driver_ids[] = {
296	{
297		.name = "avs_nau8825",
298	},
299	{},
300};
301MODULE_DEVICE_TABLE(platform, avs_nau8825_driver_ids);
302
303static struct platform_driver avs_nau8825_driver = {
304	.probe = avs_nau8825_probe,
305	.driver = {
306		.name = "avs_nau8825",
307		.pm = &snd_soc_pm_ops,
308	},
309	.id_table = avs_nau8825_driver_ids,
310};
311
312module_platform_driver(avs_nau8825_driver)
313
314MODULE_DESCRIPTION("Intel nau8825 machine driver");
315MODULE_LICENSE("GPL");