1 // SPDX-License-Identifier: GPL-2.0+
2 //
3 // Tobermory 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.h>
11 #include <linux/module.h>
12
13 #include "../codecs/wm8962.h"
14
15 static int sample_rate = 44100;
16
tobermory_set_bias_level(struct snd_soc_card * card,struct snd_soc_dapm_context * dapm,enum snd_soc_bias_level level)17 static int tobermory_set_bias_level(struct snd_soc_card *card,
18 struct snd_soc_dapm_context *dapm,
19 enum snd_soc_bias_level level)
20 {
21 struct snd_soc_pcm_runtime *rtd;
22 struct snd_soc_dai *codec_dai;
23 int ret;
24
25 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
26 codec_dai = asoc_rtd_to_codec(rtd, 0);
27
28 if (dapm->dev != codec_dai->dev)
29 return 0;
30
31 switch (level) {
32 case SND_SOC_BIAS_PREPARE:
33 if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
34 ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
35 WM8962_FLL_MCLK, 32768,
36 sample_rate * 512);
37 if (ret < 0)
38 pr_err("Failed to start FLL: %d\n", ret);
39
40 ret = snd_soc_dai_set_sysclk(codec_dai,
41 WM8962_SYSCLK_FLL,
42 sample_rate * 512,
43 SND_SOC_CLOCK_IN);
44 if (ret < 0) {
45 pr_err("Failed to set SYSCLK: %d\n", ret);
46 snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
47 0, 0, 0);
48 return ret;
49 }
50 }
51 break;
52
53 default:
54 break;
55 }
56
57 return 0;
58 }
59
tobermory_set_bias_level_post(struct snd_soc_card * card,struct snd_soc_dapm_context * dapm,enum snd_soc_bias_level level)60 static int tobermory_set_bias_level_post(struct snd_soc_card *card,
61 struct snd_soc_dapm_context *dapm,
62 enum snd_soc_bias_level level)
63 {
64 struct snd_soc_pcm_runtime *rtd;
65 struct snd_soc_dai *codec_dai;
66 int ret;
67
68 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
69 codec_dai = asoc_rtd_to_codec(rtd, 0);
70
71 if (dapm->dev != codec_dai->dev)
72 return 0;
73
74 switch (level) {
75 case SND_SOC_BIAS_STANDBY:
76 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
77 32768, SND_SOC_CLOCK_IN);
78 if (ret < 0) {
79 pr_err("Failed to switch away from FLL: %d\n", ret);
80 return ret;
81 }
82
83 ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
84 0, 0, 0);
85 if (ret < 0) {
86 pr_err("Failed to stop FLL: %d\n", ret);
87 return ret;
88 }
89 break;
90
91 default:
92 break;
93 }
94
95 dapm->bias_level = level;
96
97 return 0;
98 }
99
tobermory_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)100 static int tobermory_hw_params(struct snd_pcm_substream *substream,
101 struct snd_pcm_hw_params *params)
102 {
103 sample_rate = params_rate(params);
104
105 return 0;
106 }
107
108 static struct snd_soc_ops tobermory_ops = {
109 .hw_params = tobermory_hw_params,
110 };
111
112 SND_SOC_DAILINK_DEFS(cpu,
113 DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
114 DAILINK_COMP_ARRAY(COMP_CODEC("wm8962.1-001a", "wm8962")),
115 DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
116
117 static struct snd_soc_dai_link tobermory_dai[] = {
118 {
119 .name = "CPU",
120 .stream_name = "CPU",
121 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
122 | SND_SOC_DAIFMT_CBM_CFM,
123 .ops = &tobermory_ops,
124 SND_SOC_DAILINK_REG(cpu),
125 },
126 };
127
128 static const struct snd_kcontrol_new controls[] = {
129 SOC_DAPM_PIN_SWITCH("Main Speaker"),
130 SOC_DAPM_PIN_SWITCH("DMIC"),
131 };
132
133 static struct snd_soc_dapm_widget widgets[] = {
134 SND_SOC_DAPM_HP("Headphone", NULL),
135 SND_SOC_DAPM_MIC("Headset Mic", NULL),
136
137 SND_SOC_DAPM_MIC("DMIC", NULL),
138 SND_SOC_DAPM_MIC("AMIC", NULL),
139
140 SND_SOC_DAPM_SPK("Main Speaker", NULL),
141 };
142
143 static struct snd_soc_dapm_route audio_paths[] = {
144 { "Headphone", NULL, "HPOUTL" },
145 { "Headphone", NULL, "HPOUTR" },
146
147 { "Main Speaker", NULL, "SPKOUTL" },
148 { "Main Speaker", NULL, "SPKOUTR" },
149
150 { "Headset Mic", NULL, "MICBIAS" },
151 { "IN4L", NULL, "Headset Mic" },
152 { "IN4R", NULL, "Headset Mic" },
153
154 { "AMIC", NULL, "MICBIAS" },
155 { "IN1L", NULL, "AMIC" },
156 { "IN1R", NULL, "AMIC" },
157
158 { "DMIC", NULL, "MICBIAS" },
159 { "DMICDAT", NULL, "DMIC" },
160 };
161
162 static struct snd_soc_jack tobermory_headset;
163
164 /* Headset jack detection DAPM pins */
165 static struct snd_soc_jack_pin tobermory_headset_pins[] = {
166 {
167 .pin = "Headset Mic",
168 .mask = SND_JACK_MICROPHONE,
169 },
170 {
171 .pin = "Headphone",
172 .mask = SND_JACK_MICROPHONE,
173 },
174 };
175
tobermory_late_probe(struct snd_soc_card * card)176 static int tobermory_late_probe(struct snd_soc_card *card)
177 {
178 struct snd_soc_pcm_runtime *rtd;
179 struct snd_soc_component *component;
180 struct snd_soc_dai *codec_dai;
181 int ret;
182
183 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
184 component = asoc_rtd_to_codec(rtd, 0)->component;
185 codec_dai = asoc_rtd_to_codec(rtd, 0);
186
187 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
188 32768, SND_SOC_CLOCK_IN);
189 if (ret < 0)
190 return ret;
191
192 ret = snd_soc_card_jack_new(card, "Headset", SND_JACK_HEADSET |
193 SND_JACK_BTN_0, &tobermory_headset,
194 tobermory_headset_pins,
195 ARRAY_SIZE(tobermory_headset_pins));
196 if (ret)
197 return ret;
198
199 wm8962_mic_detect(component, &tobermory_headset);
200
201 return 0;
202 }
203
204 static struct snd_soc_card tobermory = {
205 .name = "Tobermory",
206 .owner = THIS_MODULE,
207 .dai_link = tobermory_dai,
208 .num_links = ARRAY_SIZE(tobermory_dai),
209
210 .set_bias_level = tobermory_set_bias_level,
211 .set_bias_level_post = tobermory_set_bias_level_post,
212
213 .controls = controls,
214 .num_controls = ARRAY_SIZE(controls),
215 .dapm_widgets = widgets,
216 .num_dapm_widgets = ARRAY_SIZE(widgets),
217 .dapm_routes = audio_paths,
218 .num_dapm_routes = ARRAY_SIZE(audio_paths),
219 .fully_routed = true,
220
221 .late_probe = tobermory_late_probe,
222 };
223
tobermory_probe(struct platform_device * pdev)224 static int tobermory_probe(struct platform_device *pdev)
225 {
226 struct snd_soc_card *card = &tobermory;
227 int ret;
228
229 card->dev = &pdev->dev;
230
231 ret = devm_snd_soc_register_card(&pdev->dev, card);
232 if (ret && ret != -EPROBE_DEFER)
233 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
234 ret);
235
236 return ret;
237 }
238
239 static struct platform_driver tobermory_driver = {
240 .driver = {
241 .name = "tobermory",
242 .pm = &snd_soc_pm_ops,
243 },
244 .probe = tobermory_probe,
245 };
246
247 module_platform_driver(tobermory_driver);
248
249 MODULE_DESCRIPTION("Tobermory audio support");
250 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
251 MODULE_LICENSE("GPL");
252 MODULE_ALIAS("platform:tobermory");
253
