xref: /linux/sound/soc/ti/n810.c (revision d30c1683aaecb93d2ab95685dc4300a33d3cea7a)
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 	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(rtd->card);
89 
90 	snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
91 
92 	n810_ext_control(dapm);
93 	return clk_prepare_enable(sys_clkout2);
94 }
95 
96 static void n810_shutdown(struct snd_pcm_substream *substream)
97 {
98 	clk_disable_unprepare(sys_clkout2);
99 }
100 
101 static int n810_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 err;
107 
108 	/* Set the codec system clock for DAC and ADC */
109 	err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
110 					    SND_SOC_CLOCK_IN);
111 
112 	return err;
113 }
114 
115 static const struct snd_soc_ops n810_ops = {
116 	.startup = n810_startup,
117 	.hw_params = n810_hw_params,
118 	.shutdown = n810_shutdown,
119 };
120 
121 static int n810_get_spk(struct snd_kcontrol *kcontrol,
122 			struct snd_ctl_elem_value *ucontrol)
123 {
124 	ucontrol->value.enumerated.item[0] = n810_spk_func;
125 
126 	return 0;
127 }
128 
129 static int n810_set_spk(struct snd_kcontrol *kcontrol,
130 			struct snd_ctl_elem_value *ucontrol)
131 {
132 	struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);
133 	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
134 
135 	if (n810_spk_func == ucontrol->value.enumerated.item[0])
136 		return 0;
137 
138 	n810_spk_func = ucontrol->value.enumerated.item[0];
139 	n810_ext_control(dapm);
140 
141 	return 1;
142 }
143 
144 static int n810_get_jack(struct snd_kcontrol *kcontrol,
145 			 struct snd_ctl_elem_value *ucontrol)
146 {
147 	ucontrol->value.enumerated.item[0] = n810_jack_func;
148 
149 	return 0;
150 }
151 
152 static int n810_set_jack(struct snd_kcontrol *kcontrol,
153 			 struct snd_ctl_elem_value *ucontrol)
154 {
155 	struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);
156 	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
157 
158 	if (n810_jack_func == ucontrol->value.enumerated.item[0])
159 		return 0;
160 
161 	n810_jack_func = ucontrol->value.enumerated.item[0];
162 	n810_ext_control(dapm);
163 
164 	return 1;
165 }
166 
167 static int n810_get_input(struct snd_kcontrol *kcontrol,
168 			  struct snd_ctl_elem_value *ucontrol)
169 {
170 	ucontrol->value.enumerated.item[0] = n810_dmic_func;
171 
172 	return 0;
173 }
174 
175 static int n810_set_input(struct snd_kcontrol *kcontrol,
176 			  struct snd_ctl_elem_value *ucontrol)
177 {
178 	struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);
179 	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
180 
181 	if (n810_dmic_func == ucontrol->value.enumerated.item[0])
182 		return 0;
183 
184 	n810_dmic_func = ucontrol->value.enumerated.item[0];
185 	n810_ext_control(dapm);
186 
187 	return 1;
188 }
189 
190 static int n810_spk_event(struct snd_soc_dapm_widget *w,
191 			  struct snd_kcontrol *k, int event)
192 {
193 	if (SND_SOC_DAPM_EVENT_ON(event))
194 		gpiod_set_value(n810_speaker_amp, 1);
195 	else
196 		gpiod_set_value(n810_speaker_amp, 0);
197 
198 	return 0;
199 }
200 
201 static int n810_jack_event(struct snd_soc_dapm_widget *w,
202 			   struct snd_kcontrol *k, int event)
203 {
204 	if (SND_SOC_DAPM_EVENT_ON(event))
205 		gpiod_set_value(n810_headset_amp, 1);
206 	else
207 		gpiod_set_value(n810_headset_amp, 0);
208 
209 	return 0;
210 }
211 
212 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
213 	SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
214 	SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
215 	SND_SOC_DAPM_MIC("DMic", NULL),
216 	SND_SOC_DAPM_MIC("HS Mic", NULL),
217 };
218 
219 static const struct snd_soc_dapm_route audio_map[] = {
220 	{"Headphone Jack", NULL, "HPLOUT"},
221 	{"Headphone Jack", NULL, "HPROUT"},
222 
223 	{"Ext Spk", NULL, "LLOUT"},
224 	{"Ext Spk", NULL, "RLOUT"},
225 
226 	{"DMic Rate 64", NULL, "DMic"},
227 	{"DMic", NULL, "Mic Bias"},
228 
229 	/*
230 	 * Note that the mic bias is coming from Retu/Vilma and we don't have
231 	 * control over it atm. The analog HS mic is not working. <- TODO
232 	 */
233 	{"LINE1L", NULL, "HS Mic"},
234 };
235 
236 static const char *spk_function[] = {"Off", "On"};
237 static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
238 static const char *input_function[] = {"ADC", "Digital Mic"};
239 static const struct soc_enum n810_enum[] = {
240 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
241 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
242 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
243 };
244 
245 static const struct snd_kcontrol_new aic33_n810_controls[] = {
246 	SOC_ENUM_EXT("Speaker Function", n810_enum[0],
247 		     n810_get_spk, n810_set_spk),
248 	SOC_ENUM_EXT("Jack Function", n810_enum[1],
249 		     n810_get_jack, n810_set_jack),
250 	SOC_ENUM_EXT("Input Select",  n810_enum[2],
251 		     n810_get_input, n810_set_input),
252 };
253 
254 /* Digital audio interface glue - connects codec <--> CPU */
255 SND_SOC_DAILINK_DEFS(aic33,
256 	DAILINK_COMP_ARRAY(COMP_CPU("48076000.mcbsp")),
257 	DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
258 				      "tlv320aic3x-hifi")),
259 	DAILINK_COMP_ARRAY(COMP_PLATFORM("48076000.mcbsp")));
260 
261 static struct snd_soc_dai_link n810_dai = {
262 	.name = "TLV320AIC33",
263 	.stream_name = "AIC33",
264 	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
265 		   SND_SOC_DAIFMT_CBP_CFP,
266 	.ops = &n810_ops,
267 	SND_SOC_DAILINK_REG(aic33),
268 };
269 
270 /* Audio machine driver */
271 static struct snd_soc_card snd_soc_n810 = {
272 	.name = "N810",
273 	.owner = THIS_MODULE,
274 	.dai_link = &n810_dai,
275 	.num_links = 1,
276 
277 	.controls = aic33_n810_controls,
278 	.num_controls = ARRAY_SIZE(aic33_n810_controls),
279 	.dapm_widgets = aic33_dapm_widgets,
280 	.num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets),
281 	.dapm_routes = audio_map,
282 	.num_dapm_routes = ARRAY_SIZE(audio_map),
283 	.fully_routed = true,
284 };
285 
286 static struct platform_device *n810_snd_device;
287 
288 static int __init n810_soc_init(void)
289 {
290 	int err;
291 	struct device *dev;
292 
293 	if (!of_have_populated_dt() ||
294 	    (!of_machine_is_compatible("nokia,n810") &&
295 	     !of_machine_is_compatible("nokia,n810-wimax")))
296 		return -ENODEV;
297 
298 	n810_snd_device = platform_device_alloc("soc-audio", -1);
299 	if (!n810_snd_device)
300 		return -ENOMEM;
301 
302 	platform_set_drvdata(n810_snd_device, &snd_soc_n810);
303 	err = platform_device_add(n810_snd_device);
304 	if (err)
305 		goto err1;
306 
307 	dev = &n810_snd_device->dev;
308 
309 	sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
310 	if (IS_ERR(sys_clkout2_src)) {
311 		dev_err(dev, "Could not get sys_clkout2_src clock\n");
312 		err = PTR_ERR(sys_clkout2_src);
313 		goto err2;
314 	}
315 	sys_clkout2 = clk_get(dev, "sys_clkout2");
316 	if (IS_ERR(sys_clkout2)) {
317 		dev_err(dev, "Could not get sys_clkout2\n");
318 		err = PTR_ERR(sys_clkout2);
319 		goto err3;
320 	}
321 	/*
322 	 * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
323 	 * 96 MHz as its parent in order to get 12 MHz
324 	 */
325 	func96m_clk = clk_get(dev, "func_96m_ck");
326 	if (IS_ERR(func96m_clk)) {
327 		dev_err(dev, "Could not get func 96M clock\n");
328 		err = PTR_ERR(func96m_clk);
329 		goto err4;
330 	}
331 	clk_set_parent(sys_clkout2_src, func96m_clk);
332 	clk_set_rate(sys_clkout2, 12000000);
333 
334 	n810_headset_amp = devm_gpiod_get(&n810_snd_device->dev,
335 					  "headphone", GPIOD_OUT_LOW);
336 	if (IS_ERR(n810_headset_amp)) {
337 		err = PTR_ERR(n810_headset_amp);
338 		goto err4;
339 	}
340 
341 	n810_speaker_amp = devm_gpiod_get(&n810_snd_device->dev,
342 					  "speaker", GPIOD_OUT_LOW);
343 	if (IS_ERR(n810_speaker_amp)) {
344 		err = PTR_ERR(n810_speaker_amp);
345 		goto err4;
346 	}
347 
348 	return 0;
349 err4:
350 	clk_put(sys_clkout2);
351 err3:
352 	clk_put(sys_clkout2_src);
353 err2:
354 	platform_device_del(n810_snd_device);
355 err1:
356 	platform_device_put(n810_snd_device);
357 
358 	return err;
359 }
360 
361 static void __exit n810_soc_exit(void)
362 {
363 	clk_put(sys_clkout2_src);
364 	clk_put(sys_clkout2);
365 	clk_put(func96m_clk);
366 
367 	platform_device_unregister(n810_snd_device);
368 }
369 
370 module_init(n810_soc_init);
371 module_exit(n810_soc_exit);
372 
373 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>");
374 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
375 MODULE_LICENSE("GPL");
376