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7#include <sound/soc.h>
8#include <sound/soc-dapm.h>
9#include <sound/jack.h>
10#include <linux/module.h>
11
12#include "../codecs/wm8994.h"
13
14static int sample_rate = 44100;
15
16static int littlemill_set_bias_level(struct snd_soc_card *card,
17 struct snd_soc_dapm_context *dapm,
18 enum snd_soc_bias_level level)
19{
20 struct snd_soc_pcm_runtime *rtd;
21 struct snd_soc_dai *aif1_dai;
22 int ret;
23
24 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
25 aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
26
27 if (dapm->dev != aif1_dai->dev)
28 return 0;
29
30 switch (level) {
31 case SND_SOC_BIAS_PREPARE:
32
33
34
35
36 if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
37 ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1,
38 WM8994_FLL_SRC_MCLK2, 32768,
39 sample_rate * 512);
40 if (ret < 0) {
41 pr_err("Failed to start FLL: %d\n", ret);
42 return ret;
43 }
44
45 ret = snd_soc_dai_set_sysclk(aif1_dai,
46 WM8994_SYSCLK_FLL1,
47 sample_rate * 512,
48 SND_SOC_CLOCK_IN);
49 if (ret < 0) {
50 pr_err("Failed to set SYSCLK: %d\n", ret);
51 return ret;
52 }
53 }
54 break;
55
56 default:
57 break;
58 }
59
60 return 0;
61}
62
63static int littlemill_set_bias_level_post(struct snd_soc_card *card,
64 struct snd_soc_dapm_context *dapm,
65 enum snd_soc_bias_level level)
66{
67 struct snd_soc_pcm_runtime *rtd;
68 struct snd_soc_dai *aif1_dai;
69 int ret;
70
71 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
72 aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
73
74 if (dapm->dev != aif1_dai->dev)
75 return 0;
76
77 switch (level) {
78 case SND_SOC_BIAS_STANDBY:
79 ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
80 32768, SND_SOC_CLOCK_IN);
81 if (ret < 0) {
82 pr_err("Failed to switch away from FLL1: %d\n", ret);
83 return ret;
84 }
85
86 ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1,
87 0, 0, 0);
88 if (ret < 0) {
89 pr_err("Failed to stop FLL1: %d\n", ret);
90 return ret;
91 }
92 break;
93
94 default:
95 break;
96 }
97
98 return 0;
99}
100
101static int littlemill_hw_params(struct snd_pcm_substream *substream,
102 struct snd_pcm_hw_params *params)
103{
104 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
105 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
106 int ret;
107
108 sample_rate = params_rate(params);
109
110 ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1,
111 WM8994_FLL_SRC_MCLK2, 32768,
112 sample_rate * 512);
113 if (ret < 0) {
114 pr_err("Failed to start FLL: %d\n", ret);
115 return ret;
116 }
117
118 ret = snd_soc_dai_set_sysclk(codec_dai,
119 WM8994_SYSCLK_FLL1,
120 sample_rate * 512,
121 SND_SOC_CLOCK_IN);
122 if (ret < 0) {
123 pr_err("Failed to set SYSCLK: %d\n", ret);
124 return ret;
125 }
126
127 return 0;
128}
129
130static const struct snd_soc_ops littlemill_ops = {
131 .hw_params = littlemill_hw_params,
132};
133
134static const struct snd_soc_pcm_stream baseband_params = {
135 .formats = SNDRV_PCM_FMTBIT_S32_LE,
136 .rate_min = 8000,
137 .rate_max = 8000,
138 .channels_min = 2,
139 .channels_max = 2,
140};
141
142SND_SOC_DAILINK_DEFS(cpu,
143 DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
144 DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
145 DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
146
147SND_SOC_DAILINK_DEFS(baseband,
148 DAILINK_COMP_ARRAY(COMP_CPU("wm8994-aif2")),
149 DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027",
150 "wm1250-ev1")));
151
152static struct snd_soc_dai_link littlemill_dai[] = {
153 {
154 .name = "CPU",
155 .stream_name = "CPU",
156 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
157 | SND_SOC_DAIFMT_CBP_CFP,
158 .ops = &littlemill_ops,
159 SND_SOC_DAILINK_REG(cpu),
160 },
161 {
162 .name = "Baseband",
163 .stream_name = "Baseband",
164 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
165 | SND_SOC_DAIFMT_CBP_CFP,
166 .ignore_suspend = 1,
167 .c2c_params = &baseband_params,
168 .num_c2c_params = 1,
169 SND_SOC_DAILINK_REG(baseband),
170 },
171};
172
173static int bbclk_ev(struct snd_soc_dapm_widget *w,
174 struct snd_kcontrol *kcontrol, int event)
175{
176 struct snd_soc_card *card = w->dapm->card;
177 struct snd_soc_pcm_runtime *rtd;
178 struct snd_soc_dai *aif2_dai;
179 int ret;
180
181 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
182 aif2_dai = snd_soc_rtd_to_cpu(rtd, 0);
183
184 switch (event) {
185 case SND_SOC_DAPM_PRE_PMU:
186 ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2,
187 WM8994_FLL_SRC_BCLK, 64 * 8000,
188 8000 * 256);
189 if (ret < 0) {
190 pr_err("Failed to start FLL: %d\n", ret);
191 return ret;
192 }
193
194 ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_FLL2,
195 8000 * 256,
196 SND_SOC_CLOCK_IN);
197 if (ret < 0) {
198 pr_err("Failed to set SYSCLK: %d\n", ret);
199 return ret;
200 }
201 break;
202 case SND_SOC_DAPM_POST_PMD:
203 ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2,
204 32768, SND_SOC_CLOCK_IN);
205 if (ret < 0) {
206 pr_err("Failed to switch away from FLL2: %d\n", ret);
207 return ret;
208 }
209
210 ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2,
211 0, 0, 0);
212 if (ret < 0) {
213 pr_err("Failed to stop FLL2: %d\n", ret);
214 return ret;
215 }
216 break;
217 default:
218 return -EINVAL;
219 }
220
221 return 0;
222}
223
224static const struct snd_kcontrol_new controls[] = {
225 SOC_DAPM_PIN_SWITCH("Headphone"),
226 SOC_DAPM_PIN_SWITCH("Headset Mic"),
227 SOC_DAPM_PIN_SWITCH("WM1250 Input"),
228 SOC_DAPM_PIN_SWITCH("WM1250 Output"),
229};
230
231static const struct snd_soc_dapm_widget widgets[] = {
232 SND_SOC_DAPM_HP("Headphone", NULL),
233 SND_SOC_DAPM_HP("Headset Mic", NULL),
234
235 SND_SOC_DAPM_MIC("AMIC", NULL),
236 SND_SOC_DAPM_MIC("DMIC", NULL),
237
238 SND_SOC_DAPM_SUPPLY_S("Baseband Clock", -1, SND_SOC_NOPM, 0, 0,
239 bbclk_ev,
240 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
241};
242
243static const struct snd_soc_dapm_route audio_paths[] = {
244 { "Headphone", NULL, "HPOUT1L" },
245 { "Headphone", NULL, "HPOUT1R" },
246
247 { "AMIC", NULL, "MICBIAS1" },
248 { "IN1LN", NULL, "AMIC" },
249
250 { "DMIC", NULL, "MICBIAS2" },
251 { "DMIC1DAT", NULL, "DMIC" },
252 { "DMIC2DAT", NULL, "DMIC" },
253
254 { "AIF2CLK", NULL, "Baseband Clock" },
255};
256
257static struct snd_soc_jack littlemill_headset;
258static struct snd_soc_jack_pin littlemill_headset_pins[] = {
259 {
260 .pin = "Headphone",
261 .mask = SND_JACK_HEADPHONE,
262 },
263 {
264 .pin = "Headset Mic",
265 .mask = SND_JACK_MICROPHONE,
266 },
267};
268
269static int littlemill_late_probe(struct snd_soc_card *card)
270{
271 struct snd_soc_pcm_runtime *rtd;
272 struct snd_soc_component *component;
273 struct snd_soc_dai *aif1_dai;
274 struct snd_soc_dai *aif2_dai;
275 int ret;
276
277 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
278 component = snd_soc_rtd_to_codec(rtd, 0)->component;
279 aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
280
281 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
282 aif2_dai = snd_soc_rtd_to_cpu(rtd, 0);
283
284 ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
285 32768, SND_SOC_CLOCK_IN);
286 if (ret < 0)
287 return ret;
288
289 ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2,
290 32768, SND_SOC_CLOCK_IN);
291 if (ret < 0)
292 return ret;
293
294 ret = snd_soc_card_jack_new_pins(card, "Headset",
295 SND_JACK_HEADSET | SND_JACK_MECHANICAL |
296 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
297 SND_JACK_BTN_2 | SND_JACK_BTN_3 |
298 SND_JACK_BTN_4 | SND_JACK_BTN_5,
299 &littlemill_headset,
300 littlemill_headset_pins,
301 ARRAY_SIZE(littlemill_headset_pins));
302 if (ret)
303 return ret;
304
305
306 wm8958_mic_detect(component, &littlemill_headset, NULL, NULL, NULL, NULL);
307
308
309 wm8994_mic_detect(component, &littlemill_headset, 1);
310
311 return 0;
312}
313
314static struct snd_soc_card littlemill = {
315 .name = "Littlemill",
316 .owner = THIS_MODULE,
317 .dai_link = littlemill_dai,
318 .num_links = ARRAY_SIZE(littlemill_dai),
319
320 .set_bias_level = littlemill_set_bias_level,
321 .set_bias_level_post = littlemill_set_bias_level_post,
322
323 .controls = controls,
324 .num_controls = ARRAY_SIZE(controls),
325 .dapm_widgets = widgets,
326 .num_dapm_widgets = ARRAY_SIZE(widgets),
327 .dapm_routes = audio_paths,
328 .num_dapm_routes = ARRAY_SIZE(audio_paths),
329
330 .late_probe = littlemill_late_probe,
331};
332
333static int littlemill_probe(struct platform_device *pdev)
334{
335 struct snd_soc_card *card = &littlemill;
336 int ret;
337
338 card->dev = &pdev->dev;
339
340 ret = devm_snd_soc_register_card(&pdev->dev, card);
341 if (ret)
342 dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
343
344 return ret;
345}
346
347static struct platform_driver littlemill_driver = {
348 .driver = {
349 .name = "littlemill",
350 .pm = &snd_soc_pm_ops,
351 },
352 .probe = littlemill_probe,
353};
354
355module_platform_driver(littlemill_driver);
356
357MODULE_DESCRIPTION("Littlemill audio support");
358MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
359MODULE_LICENSE("GPL");
360MODULE_ALIAS("platform:littlemill");
361
