speyside.c

  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/machine.h>
 11#include <linux/gpio/consumer.h>
 12#include <linux/module.h>
 13
 14#include "../codecs/wm8996.h"
 15#include "../codecs/wm9081.h"
 16
 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 (snd_soc_dapm_to_dev(dapm) != 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 (snd_soc_dapm_to_dev(dapm) != codec_dai->dev)
 67		return 0;
 68
 69	switch (level) {
 70	case SND_SOC_BIAS_PREPARE:
 71		if (snd_soc_dapm_get_bias_level(dapm) == 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	return 0;
 94}
 95
 96static struct snd_soc_jack speyside_headset;
 97
 98/* Headset jack detection DAPM pins */
 99static struct snd_soc_jack_pin speyside_headset_pins[] = {
100	{
101		.pin = "Headset Mic",
102		.mask = SND_JACK_MICROPHONE,
103	},
104};
105
106static struct gpio_desc *speyside_hpsel_gpio;
107/* Default the headphone selection to active high */
108static int speyside_jack_polarity;
109
110static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
111				struct snd_soc_dapm_widget *sink)
112{
113	if (speyside_jack_polarity && (snd_soc_dapm_widget_name_cmp(source, "MICB1") == 0))
114		return 1;
115	if (!speyside_jack_polarity && (snd_soc_dapm_widget_name_cmp(source, "MICB2") == 0))
116		return 1;
117
118	return 0;
119}
120
121static void speyside_set_polarity(struct snd_soc_component *component,
122				  int polarity)
123{
124	speyside_jack_polarity = !polarity;
125	gpiod_direction_output(speyside_hpsel_gpio, speyside_jack_polarity);
126
127	/* Re-run DAPM to make sure we're using the correct mic bias */
128	snd_soc_dapm_sync(snd_soc_component_to_dapm(component));
129}
130
131static int speyside_wm0010_init(struct snd_soc_pcm_runtime *rtd)
132{
133	struct snd_soc_dai *dai = snd_soc_rtd_to_codec(rtd, 0);
134	int ret;
135
136	ret = snd_soc_dai_set_sysclk(dai, 0, MCLK_AUDIO_RATE, 0);
137	if (ret < 0)
138		return ret;
139
140	return 0;
141}
142
143static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
144{
145	struct snd_soc_dai *dai = snd_soc_rtd_to_codec(rtd, 0);
146	struct snd_soc_component *component = dai->component;
147	enum gpiod_flags flags;
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	if (speyside_jack_polarity)
155		flags = GPIOD_OUT_HIGH;
156	else
157		flags = GPIOD_OUT_LOW;
158	speyside_hpsel_gpio = devm_gpiod_get(rtd->card->dev,
159					     "hp-sel",
160					     flags);
161	if (IS_ERR(speyside_hpsel_gpio))
162		return PTR_ERR(speyside_hpsel_gpio);
163
164	ret = snd_soc_card_jack_new_pins(rtd->card, "Headset",
165					 SND_JACK_LINEOUT | SND_JACK_HEADSET |
166					 SND_JACK_BTN_0,
167					 &speyside_headset,
168					 speyside_headset_pins,
169					 ARRAY_SIZE(speyside_headset_pins));
170	if (ret)
171		return ret;
172
173	wm8996_detect(component, &speyside_headset, speyside_set_polarity);
174
175	return 0;
176}
177
178static int speyside_late_probe(struct snd_soc_card *card)
179{
180	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
181
182	snd_soc_dapm_ignore_suspend(dapm, "Headphone");
183	snd_soc_dapm_ignore_suspend(dapm, "Headset Mic");
184	snd_soc_dapm_ignore_suspend(dapm, "Main AMIC");
185	snd_soc_dapm_ignore_suspend(dapm, "Main DMIC");
186	snd_soc_dapm_ignore_suspend(dapm, "Main Speaker");
187	snd_soc_dapm_ignore_suspend(dapm, "WM1250 Output");
188	snd_soc_dapm_ignore_suspend(dapm, "WM1250 Input");
189
190	return 0;
191}
192
193static const struct snd_soc_pcm_stream dsp_codec_params = {
194	.formats = SNDRV_PCM_FMTBIT_S32_LE,
195	.rate_min = 48000,
196	.rate_max = 48000,
197	.channels_min = 2,
198	.channels_max = 2,
199};
200
201SND_SOC_DAILINK_DEFS(cpu_dsp,
202	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
203	DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "wm0010-sdi1")),
204	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
205
206SND_SOC_DAILINK_DEFS(dsp_codec,
207	DAILINK_COMP_ARRAY(COMP_CPU("wm0010-sdi2")),
208	DAILINK_COMP_ARRAY(COMP_CODEC("wm8996.1-001a", "wm8996-aif1")));
209
210SND_SOC_DAILINK_DEFS(baseband,
211	DAILINK_COMP_ARRAY(COMP_CPU("wm8996-aif2")),
212	DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));
213
214static struct snd_soc_dai_link speyside_dai[] = {
215	{
216		.name = "CPU-DSP",
217		.stream_name = "CPU-DSP",
218		.init = speyside_wm0010_init,
219		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
220				| SND_SOC_DAIFMT_CBP_CFP,
221		SND_SOC_DAILINK_REG(cpu_dsp),
222	},
223	{
224		.name = "DSP-CODEC",
225		.stream_name = "DSP-CODEC",
226		.init = speyside_wm8996_init,
227		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
228				| SND_SOC_DAIFMT_CBP_CFP,
229		.c2c_params = &dsp_codec_params,
230		.num_c2c_params = 1,
231		.ignore_suspend = 1,
232		SND_SOC_DAILINK_REG(dsp_codec),
233	},
234	{
235		.name = "Baseband",
236		.stream_name = "Baseband",
237		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
238				| SND_SOC_DAIFMT_CBP_CFP,
239		.ignore_suspend = 1,
240		SND_SOC_DAILINK_REG(baseband),
241	},
242};
243
244static int speyside_wm9081_init(struct snd_soc_component *component)
245{
246	/* At any time the WM9081 is active it will have this clock */
247	return snd_soc_component_set_sysclk(component, WM9081_SYSCLK_MCLK, 0,
248					MCLK_AUDIO_RATE, 0);
249}
250
251static struct snd_soc_aux_dev speyside_aux_dev[] = {
252	{
253		.dlc = COMP_AUX("wm9081.1-006c"),
254		.init = speyside_wm9081_init,
255	},
256};
257
258static struct snd_soc_codec_conf speyside_codec_conf[] = {
259	{
260		.dlc = COMP_CODEC_CONF("wm9081.1-006c"),
261		.name_prefix = "Sub",
262	},
263};
264
265static const struct snd_kcontrol_new controls[] = {
266	SOC_DAPM_PIN_SWITCH("Main Speaker"),
267	SOC_DAPM_PIN_SWITCH("Main DMIC"),
268	SOC_DAPM_PIN_SWITCH("Main AMIC"),
269	SOC_DAPM_PIN_SWITCH("WM1250 Input"),
270	SOC_DAPM_PIN_SWITCH("WM1250 Output"),
271	SOC_DAPM_PIN_SWITCH("Headphone"),
272};
273
274static const struct snd_soc_dapm_widget widgets[] = {
275	SND_SOC_DAPM_HP("Headphone", NULL),
276	SND_SOC_DAPM_MIC("Headset Mic", NULL),
277
278	SND_SOC_DAPM_SPK("Main Speaker", NULL),
279
280	SND_SOC_DAPM_MIC("Main AMIC", NULL),
281	SND_SOC_DAPM_MIC("Main DMIC", NULL),
282};
283
284static const struct snd_soc_dapm_route audio_paths[] = {
285	{ "IN1RN", NULL, "MICB1" },
286	{ "IN1RP", NULL, "MICB1" },
287	{ "IN1RN", NULL, "MICB2" },
288	{ "IN1RP", NULL, "MICB2" },
289	{ "MICB1", NULL, "Headset Mic", speyside_get_micbias },
290	{ "MICB2", NULL, "Headset Mic", speyside_get_micbias },
291
292	{ "IN1LP", NULL, "MICB2" },
293	{ "IN1RN", NULL, "MICB1" },
294	{ "MICB2", NULL, "Main AMIC" },
295
296	{ "DMIC1DAT", NULL, "MICB1" },
297	{ "DMIC2DAT", NULL, "MICB1" },
298	{ "MICB1", NULL, "Main DMIC" },
299
300	{ "Headphone", NULL, "HPOUT1L" },
301	{ "Headphone", NULL, "HPOUT1R" },
302
303	{ "Sub IN1", NULL, "HPOUT2L" },
304	{ "Sub IN2", NULL, "HPOUT2R" },
305
306	{ "Main Speaker", NULL, "Sub SPKN" },
307	{ "Main Speaker", NULL, "Sub SPKP" },
308	{ "Main Speaker", NULL, "SPKDAT" },
309};
310
311static struct snd_soc_card speyside = {
312	.name = "Speyside",
313	.owner = THIS_MODULE,
314	.dai_link = speyside_dai,
315	.num_links = ARRAY_SIZE(speyside_dai),
316	.aux_dev = speyside_aux_dev,
317	.num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
318	.codec_conf = speyside_codec_conf,
319	.num_configs = ARRAY_SIZE(speyside_codec_conf),
320
321	.set_bias_level = speyside_set_bias_level,
322	.set_bias_level_post = speyside_set_bias_level_post,
323
324	.controls = controls,
325	.num_controls = ARRAY_SIZE(controls),
326	.dapm_widgets = widgets,
327	.num_dapm_widgets = ARRAY_SIZE(widgets),
328	.dapm_routes = audio_paths,
329	.num_dapm_routes = ARRAY_SIZE(audio_paths),
330	.fully_routed = true,
331
332	.late_probe = speyside_late_probe,
333};
334
335static struct gpiod_lookup_table wm8996_gpiod_table = {
336	/* Hardcoded device name in board file mach-crag6410.c */
337	.dev_id = "speyside",
338	.table = {
339		/*
340		 * This line was hardcoded to 214 in the global GPIO
341		 * number space, S3C GPIO macros seems top set the
342		 * wm8996 codec GPIO start offset to 212, so this will
343		 * be GPIO 214 - 212 = 2 on the wm8996.
344		 */
345		GPIO_LOOKUP("wm8996", 2, "hp-sel", GPIO_ACTIVE_HIGH),
346		{ },
347	},
348};
349
350static void speyside_gpiod_table_action(void *data)
351{
352	gpiod_remove_lookup_table(&wm8996_gpiod_table);
353}
354
355static int speyside_probe(struct platform_device *pdev)
356{
357	struct snd_soc_card *card = &speyside;
358	int ret;
359
360	card->dev = &pdev->dev;
361
362	gpiod_add_lookup_table(&wm8996_gpiod_table);
363	ret = devm_add_action_or_reset(&pdev->dev, speyside_gpiod_table_action,
364				       NULL);
365	if (ret)
366		return ret;
367
368	ret = devm_snd_soc_register_card(&pdev->dev, card);
369	if (ret)
370		dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
371
372	return ret;
373}
374
375static struct platform_driver speyside_driver = {
376	.driver = {
377		.name = "speyside",
378		.pm = &snd_soc_pm_ops,
379	},
380	.probe = speyside_probe,
381};
382
383module_platform_driver(speyside_driver);
384
385MODULE_DESCRIPTION("Speyside audio support");
386MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
387MODULE_LICENSE("GPL");
388MODULE_ALIAS("platform:speyside");