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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[0].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[0].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_wm8996_init(struct snd_soc_pcm_runtime *rtd)
130{
131 struct snd_soc_dai *dai = rtd->codec_dai;
132 struct snd_soc_codec *codec = rtd->codec;
133 int ret;
134
135 ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0);
136 if (ret < 0)
137 return ret;
138
139 ret = gpio_request(WM8996_HPSEL_GPIO, "HP_SEL");
140 if (ret != 0)
141 pr_err("Failed to request HP_SEL GPIO: %d\n", ret);
142 gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
143
144 ret = snd_soc_jack_new(codec, "Headset",
145 SND_JACK_LINEOUT | SND_JACK_HEADSET |
146 SND_JACK_BTN_0,
147 &speyside_headset);
148 if (ret)
149 return ret;
150
151 ret = snd_soc_jack_add_pins(&speyside_headset,
152 ARRAY_SIZE(speyside_headset_pins),
153 speyside_headset_pins);
154 if (ret)
155 return ret;
156
157 wm8996_detect(codec, &speyside_headset, speyside_set_polarity);
158
159 return 0;
160}
161
162static int speyside_late_probe(struct snd_soc_card *card)
163{
164 snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
165 snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
166 snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC");
167 snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC");
168 snd_soc_dapm_ignore_suspend(&card->dapm, "Main Speaker");
169 snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output");
170 snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input");
171
172 return 0;
173}
174
175static struct snd_soc_dai_link speyside_dai[] = {
176 {
177 .name = "CPU",
178 .stream_name = "CPU",
179 .cpu_dai_name = "samsung-i2s.0",
180 .codec_dai_name = "wm8996-aif1",
181 .platform_name = "samsung-audio",
182 .codec_name = "wm8996.1-001a",
183 .init = speyside_wm8996_init,
184 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
185 | SND_SOC_DAIFMT_CBM_CFM,
186 },
187 {
188 .name = "Baseband",
189 .stream_name = "Baseband",
190 .cpu_dai_name = "wm8996-aif2",
191 .codec_dai_name = "wm1250-ev1",
192 .codec_name = "wm1250-ev1.1-0027",
193 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
194 | SND_SOC_DAIFMT_CBM_CFM,
195 .ignore_suspend = 1,
196 },
197};
198
199static int speyside_wm9081_init(struct snd_soc_dapm_context *dapm)
200{
201 /* At any time the WM9081 is active it will have this clock */
202 return snd_soc_codec_set_sysclk(dapm->codec, WM9081_SYSCLK_MCLK, 0,
203 MCLK_AUDIO_RATE, 0);
204}
205
206static struct snd_soc_aux_dev speyside_aux_dev[] = {
207 {
208 .name = "wm9081",
209 .codec_name = "wm9081.1-006c",
210 .init = speyside_wm9081_init,
211 },
212};
213
214static struct snd_soc_codec_conf speyside_codec_conf[] = {
215 {
216 .dev_name = "wm9081.1-006c",
217 .name_prefix = "Sub",
218 },
219};
220
221static const struct snd_kcontrol_new controls[] = {
222 SOC_DAPM_PIN_SWITCH("Main Speaker"),
223 SOC_DAPM_PIN_SWITCH("Main DMIC"),
224 SOC_DAPM_PIN_SWITCH("Main AMIC"),
225 SOC_DAPM_PIN_SWITCH("WM1250 Input"),
226 SOC_DAPM_PIN_SWITCH("WM1250 Output"),
227 SOC_DAPM_PIN_SWITCH("Headphone"),
228};
229
230static struct snd_soc_dapm_widget widgets[] = {
231 SND_SOC_DAPM_HP("Headphone", NULL),
232 SND_SOC_DAPM_MIC("Headset Mic", NULL),
233
234 SND_SOC_DAPM_SPK("Main Speaker", NULL),
235
236 SND_SOC_DAPM_MIC("Main AMIC", NULL),
237 SND_SOC_DAPM_MIC("Main DMIC", NULL),
238};
239
240static struct snd_soc_dapm_route audio_paths[] = {
241 { "IN1RN", NULL, "MICB1" },
242 { "IN1RP", NULL, "MICB1" },
243 { "IN1RN", NULL, "MICB2" },
244 { "IN1RP", NULL, "MICB2" },
245 { "MICB1", NULL, "Headset Mic", speyside_get_micbias },
246 { "MICB2", NULL, "Headset Mic", speyside_get_micbias },
247
248 { "IN1LP", NULL, "MICB2" },
249 { "IN1RN", NULL, "MICB1" },
250 { "MICB2", NULL, "Main AMIC" },
251
252 { "DMIC1DAT", NULL, "MICB1" },
253 { "DMIC2DAT", NULL, "MICB1" },
254 { "MICB1", NULL, "Main DMIC" },
255
256 { "Headphone", NULL, "HPOUT1L" },
257 { "Headphone", NULL, "HPOUT1R" },
258
259 { "Sub IN1", NULL, "HPOUT2L" },
260 { "Sub IN2", NULL, "HPOUT2R" },
261
262 { "Main Speaker", NULL, "Sub SPKN" },
263 { "Main Speaker", NULL, "Sub SPKP" },
264 { "Main Speaker", NULL, "SPKDAT" },
265};
266
267static struct snd_soc_card speyside = {
268 .name = "Speyside",
269 .owner = THIS_MODULE,
270 .dai_link = speyside_dai,
271 .num_links = ARRAY_SIZE(speyside_dai),
272 .aux_dev = speyside_aux_dev,
273 .num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
274 .codec_conf = speyside_codec_conf,
275 .num_configs = ARRAY_SIZE(speyside_codec_conf),
276
277 .set_bias_level = speyside_set_bias_level,
278 .set_bias_level_post = speyside_set_bias_level_post,
279
280 .controls = controls,
281 .num_controls = ARRAY_SIZE(controls),
282 .dapm_widgets = widgets,
283 .num_dapm_widgets = ARRAY_SIZE(widgets),
284 .dapm_routes = audio_paths,
285 .num_dapm_routes = ARRAY_SIZE(audio_paths),
286 .fully_routed = true,
287
288 .late_probe = speyside_late_probe,
289};
290
291static __devinit int speyside_probe(struct platform_device *pdev)
292{
293 struct snd_soc_card *card = &speyside;
294 int ret;
295
296 card->dev = &pdev->dev;
297
298 ret = snd_soc_register_card(card);
299 if (ret) {
300 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
301 ret);
302 return ret;
303 }
304
305 return 0;
306}
307
308static int __devexit speyside_remove(struct platform_device *pdev)
309{
310 struct snd_soc_card *card = platform_get_drvdata(pdev);
311
312 snd_soc_unregister_card(card);
313
314 return 0;
315}
316
317static struct platform_driver speyside_driver = {
318 .driver = {
319 .name = "speyside",
320 .owner = THIS_MODULE,
321 .pm = &snd_soc_pm_ops,
322 },
323 .probe = speyside_probe,
324 .remove = __devexit_p(speyside_remove),
325};
326
327module_platform_driver(speyside_driver);
328
329MODULE_DESCRIPTION("Speyside audio support");
330MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
331MODULE_LICENSE("GPL");
332MODULE_ALIAS("platform:speyside");