1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * n810.c -- SoC audio for Nokia N810
4 *
5 * Copyright (C) 2008 Nokia Corporation
6 *
7 * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com>
8 */
9
10 #include <linux/clk.h>
11 #include <linux/i2c.h>
12 #include <linux/platform_device.h>
13 #include <sound/core.h>
14 #include <sound/pcm.h>
15 #include <sound/soc.h>
16
17 #include <asm/mach-types.h>
18 #include <linux/gpio/consumer.h>
19 #include <linux/module.h>
20 #include <linux/platform_data/asoc-ti-mcbsp.h>
21
22 #include "omap-mcbsp.h"
23
24 static struct gpio_desc *n810_headset_amp;
25 static struct gpio_desc *n810_speaker_amp;
26
27 enum {
28 N810_JACK_DISABLED,
29 N810_JACK_HP,
30 N810_JACK_HS,
31 N810_JACK_MIC,
32 };
33
34 static struct clk *sys_clkout2;
35 static struct clk *sys_clkout2_src;
36 static struct clk *func96m_clk;
37
38 static int n810_spk_func;
39 static int n810_jack_func;
40 static int n810_dmic_func;
41
42 static void n810_ext_control(struct snd_soc_dapm_context *dapm)
43 {
44 int hp = 0, line1l = 0;
45
46 switch (n810_jack_func) {
47 case N810_JACK_HS:
48 line1l = 1;
49 fallthrough;
50 case N810_JACK_HP:
51 hp = 1;
52 break;
53 case N810_JACK_MIC:
54 line1l = 1;
55 break;
56 }
57
58 snd_soc_dapm_mutex_lock(dapm);
59
60 if (n810_spk_func)
61 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
62 else
63 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
64
65 if (hp)
66 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
67 else
68 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
69 if (line1l)
70 snd_soc_dapm_enable_pin_unlocked(dapm, "HS Mic");
71 else
72 snd_soc_dapm_disable_pin_unlocked(dapm, "HS Mic");
73
74 if (n810_dmic_func)
75 snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
76 else
77 snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
78
79 snd_soc_dapm_sync_unlocked(dapm);
80
81 snd_soc_dapm_mutex_unlock(dapm);
82 }
83
84 static int n810_startup(struct snd_pcm_substream *substream)
85 {
86 struct snd_pcm_runtime *runtime = substream->runtime;
87 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
88
89 snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
90
91 n810_ext_control(&rtd->card->dapm);
92 return clk_prepare_enable(sys_clkout2);
93 }
94
95 static void n810_shutdown(struct snd_pcm_substream *substream)
96 {
97 clk_disable_unprepare(sys_clkout2);
98 }
99
100 static int n810_hw_params(struct snd_pcm_substream *substream,
101 struct snd_pcm_hw_params *params)
102 {
103 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
104 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
105 int err;
106
107 /* Set the codec system clock for DAC and ADC */
108 err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
109 SND_SOC_CLOCK_IN);
110
111 return err;
112 }
113
114 static const struct snd_soc_ops n810_ops = {
115 .startup = n810_startup,
116 .hw_params = n810_hw_params,
117 .shutdown = n810_shutdown,
118 };
119
120 static int n810_get_spk(struct snd_kcontrol *kcontrol,
121 struct snd_ctl_elem_value *ucontrol)
122 {
123 ucontrol->value.enumerated.item[0] = n810_spk_func;
124
125 return 0;
126 }
127
128 static int n810_set_spk(struct snd_kcontrol *kcontrol,
129 struct snd_ctl_elem_value *ucontrol)
130 {
131 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
132
133 if (n810_spk_func == ucontrol->value.enumerated.item[0])
134 return 0;
135
136 n810_spk_func = ucontrol->value.enumerated.item[0];
137 n810_ext_control(&card->dapm);
138
139 return 1;
140 }
141
142 static int n810_get_jack(struct snd_kcontrol *kcontrol,
143 struct snd_ctl_elem_value *ucontrol)
144 {
145 ucontrol->value.enumerated.item[0] = n810_jack_func;
146
147 return 0;
148 }
149
150 static int n810_set_jack(struct snd_kcontrol *kcontrol,
151 struct snd_ctl_elem_value *ucontrol)
152 {
153 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
154
155 if (n810_jack_func == ucontrol->value.enumerated.item[0])
156 return 0;
157
158 n810_jack_func = ucontrol->value.enumerated.item[0];
159 n810_ext_control(&card->dapm);
160
161 return 1;
162 }
163
164 static int n810_get_input(struct snd_kcontrol *kcontrol,
165 struct snd_ctl_elem_value *ucontrol)
166 {
167 ucontrol->value.enumerated.item[0] = n810_dmic_func;
168
169 return 0;
170 }
171
172 static int n810_set_input(struct snd_kcontrol *kcontrol,
173 struct snd_ctl_elem_value *ucontrol)
174 {
175 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
176
177 if (n810_dmic_func == ucontrol->value.enumerated.item[0])
178 return 0;
179
180 n810_dmic_func = ucontrol->value.enumerated.item[0];
181 n810_ext_control(&card->dapm);
182
183 return 1;
184 }
185
186 static int n810_spk_event(struct snd_soc_dapm_widget *w,
187 struct snd_kcontrol *k, int event)
188 {
189 if (SND_SOC_DAPM_EVENT_ON(event))
190 gpiod_set_value(n810_speaker_amp, 1);
191 else
192 gpiod_set_value(n810_speaker_amp, 0);
193
194 return 0;
195 }
196
197 static int n810_jack_event(struct snd_soc_dapm_widget *w,
198 struct snd_kcontrol *k, int event)
199 {
200 if (SND_SOC_DAPM_EVENT_ON(event))
201 gpiod_set_value(n810_headset_amp, 1);
202 else
203 gpiod_set_value(n810_headset_amp, 0);
204
205 return 0;
206 }
207
208 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
209 SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
210 SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
211 SND_SOC_DAPM_MIC("DMic", NULL),
212 SND_SOC_DAPM_MIC("HS Mic", NULL),
213 };
214
215 static const struct snd_soc_dapm_route audio_map[] = {
216 {"Headphone Jack", NULL, "HPLOUT"},
217 {"Headphone Jack", NULL, "HPROUT"},
218
219 {"Ext Spk", NULL, "LLOUT"},
220 {"Ext Spk", NULL, "RLOUT"},
221
222 {"DMic Rate 64", NULL, "DMic"},
223 {"DMic", NULL, "Mic Bias"},
224
225 /*
226 * Note that the mic bias is coming from Retu/Vilma and we don't have
227 * control over it atm. The analog HS mic is not working. <- TODO
228 */
229 {"LINE1L", NULL, "HS Mic"},
230 };
231
232 static const char *spk_function[] = {"Off", "On"};
233 static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
234 static const char *input_function[] = {"ADC", "Digital Mic"};
235 static const struct soc_enum n810_enum[] = {
236 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
237 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
238 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
239 };
240
241 static const struct snd_kcontrol_new aic33_n810_controls[] = {
242 SOC_ENUM_EXT("Speaker Function", n810_enum[0],
243 n810_get_spk, n810_set_spk),
244 SOC_ENUM_EXT("Jack Function", n810_enum[1],
245 n810_get_jack, n810_set_jack),
246 SOC_ENUM_EXT("Input Select", n810_enum[2],
247 n810_get_input, n810_set_input),
248 };
249
250 /* Digital audio interface glue - connects codec <--> CPU */
251 SND_SOC_DAILINK_DEFS(aic33,
252 DAILINK_COMP_ARRAY(COMP_CPU("48076000.mcbsp")),
253 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
254 "tlv320aic3x-hifi")),
255 DAILINK_COMP_ARRAY(COMP_PLATFORM("48076000.mcbsp")));
256
257 static struct snd_soc_dai_link n810_dai = {
258 .name = "TLV320AIC33",
259 .stream_name = "AIC33",
260 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
261 SND_SOC_DAIFMT_CBM_CFM,
262 .ops = &n810_ops,
263 SND_SOC_DAILINK_REG(aic33),
264 };
265
266 /* Audio machine driver */
267 static struct snd_soc_card snd_soc_n810 = {
268 .name = "N810",
269 .owner = THIS_MODULE,
270 .dai_link = &n810_dai,
271 .num_links = 1,
272
273 .controls = aic33_n810_controls,
274 .num_controls = ARRAY_SIZE(aic33_n810_controls),
275 .dapm_widgets = aic33_dapm_widgets,
276 .num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets),
277 .dapm_routes = audio_map,
278 .num_dapm_routes = ARRAY_SIZE(audio_map),
279 .fully_routed = true,
280 };
281
282 static struct platform_device *n810_snd_device;
283
284 static int __init n810_soc_init(void)
285 {
286 int err;
287 struct device *dev;
288
289 if (!of_have_populated_dt() ||
290 (!of_machine_is_compatible("nokia,n810") &&
291 !of_machine_is_compatible("nokia,n810-wimax")))
292 return -ENODEV;
293
294 n810_snd_device = platform_device_alloc("soc-audio", -1);
295 if (!n810_snd_device)
296 return -ENOMEM;
297
298 platform_set_drvdata(n810_snd_device, &snd_soc_n810);
299 err = platform_device_add(n810_snd_device);
300 if (err)
301 goto err1;
302
303 dev = &n810_snd_device->dev;
304
305 sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
306 if (IS_ERR(sys_clkout2_src)) {
307 dev_err(dev, "Could not get sys_clkout2_src clock\n");
308 err = PTR_ERR(sys_clkout2_src);
309 goto err2;
310 }
311 sys_clkout2 = clk_get(dev, "sys_clkout2");
312 if (IS_ERR(sys_clkout2)) {
313 dev_err(dev, "Could not get sys_clkout2\n");
314 err = PTR_ERR(sys_clkout2);
315 goto err3;
316 }
317 /*
318 * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
319 * 96 MHz as its parent in order to get 12 MHz
320 */
321 func96m_clk = clk_get(dev, "func_96m_ck");
322 if (IS_ERR(func96m_clk)) {
323 dev_err(dev, "Could not get func 96M clock\n");
324 err = PTR_ERR(func96m_clk);
325 goto err4;
326 }
327 clk_set_parent(sys_clkout2_src, func96m_clk);
328 clk_set_rate(sys_clkout2, 12000000);
329
330 n810_headset_amp = devm_gpiod_get(&n810_snd_device->dev,
331 "headphone", GPIOD_OUT_LOW);
332 if (IS_ERR(n810_headset_amp)) {
333 err = PTR_ERR(n810_headset_amp);
334 goto err4;
335 }
336
337 n810_speaker_amp = devm_gpiod_get(&n810_snd_device->dev,
338 "speaker", GPIOD_OUT_LOW);
339 if (IS_ERR(n810_speaker_amp)) {
340 err = PTR_ERR(n810_speaker_amp);
341 goto err4;
342 }
343
344 return 0;
345 err4:
346 clk_put(sys_clkout2);
347 err3:
348 clk_put(sys_clkout2_src);
349 err2:
350 platform_device_del(n810_snd_device);
351 err1:
352 platform_device_put(n810_snd_device);
353
354 return err;
355 }
356
357 static void __exit n810_soc_exit(void)
358 {
359 clk_put(sys_clkout2_src);
360 clk_put(sys_clkout2);
361 clk_put(func96m_clk);
362
363 platform_device_unregister(n810_snd_device);
364 }
365
366 module_init(n810_soc_init);
367 module_exit(n810_soc_exit);
368
369 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>");
370 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
371 MODULE_LICENSE("GPL");
372
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