1// SPDX-License-Identifier: GPL-2.0+
2//
3// Speyside audio support
4//
5// Copyright 2011 Wolfson Microelectronics
6
7#include <sound/soc.h>
8#include <sound/soc-dapm.h>
9#include <sound/jack.h>
10#include <linux/gpio.h>
11#include <linux/module.h>
12
13#include "../codecs/wm8996.h"
14#include "../codecs/wm9081.h"
15
16#define WM8996_HPSEL_GPIO 214
17#define MCLK_AUDIO_RATE (512 * 48000)
18
19static int speyside_set_bias_level(struct snd_soc_card *card,
20				   struct snd_soc_dapm_context *dapm,
21				   enum snd_soc_bias_level level)
22{
23	struct snd_soc_pcm_runtime *rtd;
24	struct snd_soc_dai *codec_dai;
25	int ret;
26
27	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
28	codec_dai = snd_soc_rtd_to_codec(rtd, 0);
29
30	if (dapm->dev != codec_dai->dev)
31		return 0;
32
33	switch (level) {
34	case SND_SOC_BIAS_STANDBY:
35		ret = snd_soc_dai_set_sysclk(codec_dai, WM8996_SYSCLK_MCLK2,
36					     32768, SND_SOC_CLOCK_IN);
37		if (ret < 0)
38			return ret;
39
40		ret = snd_soc_dai_set_pll(codec_dai, WM8996_FLL_MCLK2,
41					  0, 0, 0);
42		if (ret < 0) {
43			pr_err("Failed to stop FLL\n");
44			return ret;
45		}
46		break;
47
48	default:
49		break;
50	}
51
52	return 0;
53}
54
55static int speyside_set_bias_level_post(struct snd_soc_card *card,
56					struct snd_soc_dapm_context *dapm,
57					enum snd_soc_bias_level level)
58{
59	struct snd_soc_pcm_runtime *rtd;
60	struct snd_soc_dai *codec_dai;
61	int ret;
62
63	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
64	codec_dai = snd_soc_rtd_to_codec(rtd, 0);
65
66	if (dapm->dev != codec_dai->dev)
67		return 0;
68
69	switch (level) {
70	case SND_SOC_BIAS_PREPARE:
71		if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) {
72			ret = snd_soc_dai_set_pll(codec_dai, 0,
73						  WM8996_FLL_MCLK2,
74						  32768, MCLK_AUDIO_RATE);
75			if (ret < 0) {
76				pr_err("Failed to start FLL\n");
77				return ret;
78			}
79
80			ret = snd_soc_dai_set_sysclk(codec_dai,
81						     WM8996_SYSCLK_FLL,
82						     MCLK_AUDIO_RATE,
83						     SND_SOC_CLOCK_IN);
84			if (ret < 0)
85				return ret;
86		}
87		break;
88
89	default:
90		break;
91	}
92
93	card->dapm.bias_level = level;
94
95	return 0;
96}
97
98static struct snd_soc_jack speyside_headset;
99
100/* Headset jack detection DAPM pins */
101static struct snd_soc_jack_pin speyside_headset_pins[] = {
102	{
103		.pin = "Headset Mic",
104		.mask = SND_JACK_MICROPHONE,
105	},
106};
107
108/* Default the headphone selection to active high */
109static int speyside_jack_polarity;
110
111static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
112				struct snd_soc_dapm_widget *sink)
113{
114	if (speyside_jack_polarity && (snd_soc_dapm_widget_name_cmp(source, "MICB1") == 0))
115		return 1;
116	if (!speyside_jack_polarity && (snd_soc_dapm_widget_name_cmp(source, "MICB2") == 0))
117		return 1;
118
119	return 0;
120}
121
122static void speyside_set_polarity(struct snd_soc_component *component,
123				  int polarity)
124{
125	speyside_jack_polarity = !polarity;
126	gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
127
128	/* Re-run DAPM to make sure we're using the correct mic bias */
129	snd_soc_dapm_sync(snd_soc_component_get_dapm(component));
130}
131
132static int speyside_wm0010_init(struct snd_soc_pcm_runtime *rtd)
133{
134	struct snd_soc_dai *dai = snd_soc_rtd_to_codec(rtd, 0);
135	int ret;
136
137	ret = snd_soc_dai_set_sysclk(dai, 0, MCLK_AUDIO_RATE, 0);
138	if (ret < 0)
139		return ret;
140
141	return 0;
142}
143
144static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
145{
146	struct snd_soc_dai *dai = snd_soc_rtd_to_codec(rtd, 0);
147	struct snd_soc_component *component = dai->component;
148	int ret;
149
150	ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0);
151	if (ret < 0)
152		return ret;
153
154	ret = gpio_request(WM8996_HPSEL_GPIO, "HP_SEL");
155	if (ret != 0)
156		pr_err("Failed to request HP_SEL GPIO: %d\n", ret);
157	gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
158
159	ret = snd_soc_card_jack_new_pins(rtd->card, "Headset",
160					 SND_JACK_LINEOUT | SND_JACK_HEADSET |
161					 SND_JACK_BTN_0,
162					 &speyside_headset,
163					 speyside_headset_pins,
164					 ARRAY_SIZE(speyside_headset_pins));
165	if (ret)
166		return ret;
167
168	wm8996_detect(component, &speyside_headset, speyside_set_polarity);
169
170	return 0;
171}
172
173static int speyside_late_probe(struct snd_soc_card *card)
174{
175	snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
176	snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
177	snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC");
178	snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC");
179	snd_soc_dapm_ignore_suspend(&card->dapm, "Main Speaker");
180	snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output");
181	snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input");
182
183	return 0;
184}
185
186static const struct snd_soc_pcm_stream dsp_codec_params = {
187	.formats = SNDRV_PCM_FMTBIT_S32_LE,
188	.rate_min = 48000,
189	.rate_max = 48000,
190	.channels_min = 2,
191	.channels_max = 2,
192};
193
194SND_SOC_DAILINK_DEFS(cpu_dsp,
195	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
196	DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "wm0010-sdi1")),
197	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
198
199SND_SOC_DAILINK_DEFS(dsp_codec,
200	DAILINK_COMP_ARRAY(COMP_CPU("wm0010-sdi2")),
201	DAILINK_COMP_ARRAY(COMP_CODEC("wm8996.1-001a", "wm8996-aif1")));
202
203SND_SOC_DAILINK_DEFS(baseband,
204	DAILINK_COMP_ARRAY(COMP_CPU("wm8996-aif2")),
205	DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));
206
207static struct snd_soc_dai_link speyside_dai[] = {
208	{
209		.name = "CPU-DSP",
210		.stream_name = "CPU-DSP",
211		.init = speyside_wm0010_init,
212		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
213				| SND_SOC_DAIFMT_CBM_CFM,
214		SND_SOC_DAILINK_REG(cpu_dsp),
215	},
216	{
217		.name = "DSP-CODEC",
218		.stream_name = "DSP-CODEC",
219		.init = speyside_wm8996_init,
220		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
221				| SND_SOC_DAIFMT_CBM_CFM,
222		.c2c_params = &dsp_codec_params,
223		.num_c2c_params = 1,
224		.ignore_suspend = 1,
225		SND_SOC_DAILINK_REG(dsp_codec),
226	},
227	{
228		.name = "Baseband",
229		.stream_name = "Baseband",
230		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
231				| SND_SOC_DAIFMT_CBM_CFM,
232		.ignore_suspend = 1,
233		SND_SOC_DAILINK_REG(baseband),
234	},
235};
236
237static int speyside_wm9081_init(struct snd_soc_component *component)
238{
239	/* At any time the WM9081 is active it will have this clock */
240	return snd_soc_component_set_sysclk(component, WM9081_SYSCLK_MCLK, 0,
241					MCLK_AUDIO_RATE, 0);
242}
243
244static struct snd_soc_aux_dev speyside_aux_dev[] = {
245	{
246		.dlc = COMP_AUX("wm9081.1-006c"),
247		.init = speyside_wm9081_init,
248	},
249};
250
251static struct snd_soc_codec_conf speyside_codec_conf[] = {
252	{
253		.dlc = COMP_CODEC_CONF("wm9081.1-006c"),
254		.name_prefix = "Sub",
255	},
256};
257
258static const struct snd_kcontrol_new controls[] = {
259	SOC_DAPM_PIN_SWITCH("Main Speaker"),
260	SOC_DAPM_PIN_SWITCH("Main DMIC"),
261	SOC_DAPM_PIN_SWITCH("Main AMIC"),
262	SOC_DAPM_PIN_SWITCH("WM1250 Input"),
263	SOC_DAPM_PIN_SWITCH("WM1250 Output"),
264	SOC_DAPM_PIN_SWITCH("Headphone"),
265};
266
267static const struct snd_soc_dapm_widget widgets[] = {
268	SND_SOC_DAPM_HP("Headphone", NULL),
269	SND_SOC_DAPM_MIC("Headset Mic", NULL),
270
271	SND_SOC_DAPM_SPK("Main Speaker", NULL),
272
273	SND_SOC_DAPM_MIC("Main AMIC", NULL),
274	SND_SOC_DAPM_MIC("Main DMIC", NULL),
275};
276
277static const struct snd_soc_dapm_route audio_paths[] = {
278	{ "IN1RN", NULL, "MICB1" },
279	{ "IN1RP", NULL, "MICB1" },
280	{ "IN1RN", NULL, "MICB2" },
281	{ "IN1RP", NULL, "MICB2" },
282	{ "MICB1", NULL, "Headset Mic", speyside_get_micbias },
283	{ "MICB2", NULL, "Headset Mic", speyside_get_micbias },
284
285	{ "IN1LP", NULL, "MICB2" },
286	{ "IN1RN", NULL, "MICB1" },
287	{ "MICB2", NULL, "Main AMIC" },
288
289	{ "DMIC1DAT", NULL, "MICB1" },
290	{ "DMIC2DAT", NULL, "MICB1" },
291	{ "MICB1", NULL, "Main DMIC" },
292
293	{ "Headphone", NULL, "HPOUT1L" },
294	{ "Headphone", NULL, "HPOUT1R" },
295
296	{ "Sub IN1", NULL, "HPOUT2L" },
297	{ "Sub IN2", NULL, "HPOUT2R" },
298
299	{ "Main Speaker", NULL, "Sub SPKN" },
300	{ "Main Speaker", NULL, "Sub SPKP" },
301	{ "Main Speaker", NULL, "SPKDAT" },
302};
303
304static struct snd_soc_card speyside = {
305	.name = "Speyside",
306	.owner = THIS_MODULE,
307	.dai_link = speyside_dai,
308	.num_links = ARRAY_SIZE(speyside_dai),
309	.aux_dev = speyside_aux_dev,
310	.num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
311	.codec_conf = speyside_codec_conf,
312	.num_configs = ARRAY_SIZE(speyside_codec_conf),
313
314	.set_bias_level = speyside_set_bias_level,
315	.set_bias_level_post = speyside_set_bias_level_post,
316
317	.controls = controls,
318	.num_controls = ARRAY_SIZE(controls),
319	.dapm_widgets = widgets,
320	.num_dapm_widgets = ARRAY_SIZE(widgets),
321	.dapm_routes = audio_paths,
322	.num_dapm_routes = ARRAY_SIZE(audio_paths),
323	.fully_routed = true,
324
325	.late_probe = speyside_late_probe,
326};
327
328static int speyside_probe(struct platform_device *pdev)
329{
330	struct snd_soc_card *card = &speyside;
331	int ret;
332
333	card->dev = &pdev->dev;
334
335	ret = devm_snd_soc_register_card(&pdev->dev, card);
336	if (ret)
337		dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
338
339	return ret;
340}
341
342static struct platform_driver speyside_driver = {
343	.driver = {
344		.name = "speyside",
345		.pm = &snd_soc_pm_ops,
346	},
347	.probe = speyside_probe,
348};
349
350module_platform_driver(speyside_driver);
351
352MODULE_DESCRIPTION("Speyside audio support");
353MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
354MODULE_LICENSE("GPL");
355MODULE_ALIAS("platform:speyside");
356