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