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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/wm8962.h"
19
20static int sample_rate = 44100;
21
22static int tobermory_set_bias_level(struct snd_soc_card *card,
23 struct snd_soc_dapm_context *dapm,
24 enum snd_soc_bias_level level)
25{
26 struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
27 int ret;
28
29 if (dapm->dev != codec_dai->dev)
30 return 0;
31
32 switch (level) {
33 case SND_SOC_BIAS_PREPARE:
34 if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
35 ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
36 WM8962_FLL_MCLK, 32768,
37 sample_rate * 512);
38 if (ret < 0)
39 pr_err("Failed to start FLL: %d\n", ret);
40
41 ret = snd_soc_dai_set_sysclk(codec_dai,
42 WM8962_SYSCLK_FLL,
43 sample_rate * 512,
44 SND_SOC_CLOCK_IN);
45 if (ret < 0) {
46 pr_err("Failed to set SYSCLK: %d\n", ret);
47 return ret;
48 }
49 }
50 break;
51
52 default:
53 break;
54 }
55
56 return 0;
57}
58
59static int tobermory_set_bias_level_post(struct snd_soc_card *card,
60 struct snd_soc_dapm_context *dapm,
61 enum snd_soc_bias_level level)
62{
63 struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
64 int ret;
65
66 if (dapm->dev != codec_dai->dev)
67 return 0;
68
69 switch (level) {
70 case SND_SOC_BIAS_STANDBY:
71 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
72 32768, SND_SOC_CLOCK_IN);
73 if (ret < 0) {
74 pr_err("Failed to switch away from FLL: %d\n", ret);
75 return ret;
76 }
77
78 ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
79 0, 0, 0);
80 if (ret < 0) {
81 pr_err("Failed to stop FLL: %d\n", ret);
82 return ret;
83 }
84 break;
85
86 default:
87 break;
88 }
89
90 dapm->bias_level = level;
91
92 return 0;
93}
94
95static int tobermory_hw_params(struct snd_pcm_substream *substream,
96 struct snd_pcm_hw_params *params)
97{
98 sample_rate = params_rate(params);
99
100 return 0;
101}
102
103static struct snd_soc_ops tobermory_ops = {
104 .hw_params = tobermory_hw_params,
105};
106
107static struct snd_soc_dai_link tobermory_dai[] = {
108 {
109 .name = "CPU",
110 .stream_name = "CPU",
111 .cpu_dai_name = "samsung-i2s.0",
112 .codec_dai_name = "wm8962",
113 .platform_name = "samsung-i2s.0",
114 .codec_name = "wm8962.1-001a",
115 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
116 | SND_SOC_DAIFMT_CBM_CFM,
117 .ops = &tobermory_ops,
118 },
119};
120
121static const struct snd_kcontrol_new controls[] = {
122 SOC_DAPM_PIN_SWITCH("Main Speaker"),
123 SOC_DAPM_PIN_SWITCH("DMIC"),
124};
125
126static struct snd_soc_dapm_widget widgets[] = {
127 SND_SOC_DAPM_HP("Headphone", NULL),
128 SND_SOC_DAPM_MIC("Headset Mic", NULL),
129
130 SND_SOC_DAPM_MIC("DMIC", NULL),
131 SND_SOC_DAPM_MIC("AMIC", NULL),
132
133 SND_SOC_DAPM_SPK("Main Speaker", NULL),
134};
135
136static struct snd_soc_dapm_route audio_paths[] = {
137 { "Headphone", NULL, "HPOUTL" },
138 { "Headphone", NULL, "HPOUTR" },
139
140 { "Main Speaker", NULL, "SPKOUTL" },
141 { "Main Speaker", NULL, "SPKOUTR" },
142
143 { "Headset Mic", NULL, "MICBIAS" },
144 { "IN4L", NULL, "Headset Mic" },
145 { "IN4R", NULL, "Headset Mic" },
146
147 { "AMIC", NULL, "MICBIAS" },
148 { "IN1L", NULL, "AMIC" },
149 { "IN1R", NULL, "AMIC" },
150
151 { "DMIC", NULL, "MICBIAS" },
152 { "DMICDAT", NULL, "DMIC" },
153};
154
155static struct snd_soc_jack tobermory_headset;
156
157
158static struct snd_soc_jack_pin tobermory_headset_pins[] = {
159 {
160 .pin = "Headset Mic",
161 .mask = SND_JACK_MICROPHONE,
162 },
163 {
164 .pin = "Headphone",
165 .mask = SND_JACK_MICROPHONE,
166 },
167};
168
169static int tobermory_late_probe(struct snd_soc_card *card)
170{
171 struct snd_soc_codec *codec = card->rtd[0].codec;
172 struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
173 int ret;
174
175 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
176 32768, SND_SOC_CLOCK_IN);
177 if (ret < 0)
178 return ret;
179
180 ret = snd_soc_jack_new(codec, "Headset",
181 SND_JACK_HEADSET | SND_JACK_BTN_0,
182 &tobermory_headset);
183 if (ret)
184 return ret;
185
186 ret = snd_soc_jack_add_pins(&tobermory_headset,
187 ARRAY_SIZE(tobermory_headset_pins),
188 tobermory_headset_pins);
189 if (ret)
190 return ret;
191
192 wm8962_mic_detect(codec, &tobermory_headset);
193
194 return 0;
195}
196
197static struct snd_soc_card tobermory = {
198 .name = "Tobermory",
199 .owner = THIS_MODULE,
200 .dai_link = tobermory_dai,
201 .num_links = ARRAY_SIZE(tobermory_dai),
202
203 .set_bias_level = tobermory_set_bias_level,
204 .set_bias_level_post = tobermory_set_bias_level_post,
205
206 .controls = controls,
207 .num_controls = ARRAY_SIZE(controls),
208 .dapm_widgets = widgets,
209 .num_dapm_widgets = ARRAY_SIZE(widgets),
210 .dapm_routes = audio_paths,
211 .num_dapm_routes = ARRAY_SIZE(audio_paths),
212 .fully_routed = true,
213
214 .late_probe = tobermory_late_probe,
215};
216
217static int tobermory_probe(struct platform_device *pdev)
218{
219 struct snd_soc_card *card = &tobermory;
220 int ret;
221
222 card->dev = &pdev->dev;
223
224 ret = snd_soc_register_card(card);
225 if (ret) {
226 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
227 ret);
228 return ret;
229 }
230
231 return 0;
232}
233
234static int tobermory_remove(struct platform_device *pdev)
235{
236 struct snd_soc_card *card = platform_get_drvdata(pdev);
237
238 snd_soc_unregister_card(card);
239
240 return 0;
241}
242
243static struct platform_driver tobermory_driver = {
244 .driver = {
245 .name = "tobermory",
246 .owner = THIS_MODULE,
247 .pm = &snd_soc_pm_ops,
248 },
249 .probe = tobermory_probe,
250 .remove = tobermory_remove,
251};
252
253module_platform_driver(tobermory_driver);
254
255MODULE_DESCRIPTION("Tobermory audio support");
256MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
257MODULE_LICENSE("GPL");
258MODULE_ALIAS("platform:tobermory");
259
