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