xref: /openbmc/linux/sound/soc/pxa/spitz.c (revision c71f5fa0)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * spitz.c  --  SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
4  *
5  * Copyright 2005 Wolfson Microelectronics PLC.
6  * Copyright 2005 Openedhand Ltd.
7  *
8  * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
9  *          Richard Purdie <richard@openedhand.com>
10  */
11 
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/timer.h>
15 #include <linux/interrupt.h>
16 #include <linux/platform_device.h>
17 #include <linux/gpio/consumer.h>
18 #include <sound/core.h>
19 #include <sound/pcm.h>
20 #include <sound/soc.h>
21 
22 #include <asm/mach-types.h>
23 #include "../codecs/wm8750.h"
24 #include "pxa2xx-i2s.h"
25 
26 #define SPITZ_HP        0
27 #define SPITZ_MIC       1
28 #define SPITZ_LINE      2
29 #define SPITZ_HEADSET   3
30 #define SPITZ_HP_OFF    4
31 #define SPITZ_SPK_ON    0
32 #define SPITZ_SPK_OFF   1
33 
34  /* audio clock in Hz - rounded from 12.235MHz */
35 #define SPITZ_AUDIO_CLOCK 12288000
36 
37 static int spitz_jack_func;
38 static int spitz_spk_func;
39 static struct gpio_desc *gpiod_mic, *gpiod_mute_l, *gpiod_mute_r;
40 
spitz_ext_control(struct snd_soc_dapm_context * dapm)41 static void spitz_ext_control(struct snd_soc_dapm_context *dapm)
42 {
43 	snd_soc_dapm_mutex_lock(dapm);
44 
45 	if (spitz_spk_func == SPITZ_SPK_ON)
46 		snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
47 	else
48 		snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
49 
50 	/* set up jack connection */
51 	switch (spitz_jack_func) {
52 	case SPITZ_HP:
53 		/* enable and unmute hp jack, disable mic bias */
54 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
55 		snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
56 		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
57 		snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
58 		gpiod_set_value(gpiod_mute_l, 1);
59 		gpiod_set_value(gpiod_mute_r, 1);
60 		break;
61 	case SPITZ_MIC:
62 		/* enable mic jack and bias, mute hp */
63 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
64 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
65 		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
66 		snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
67 		gpiod_set_value(gpiod_mute_l, 0);
68 		gpiod_set_value(gpiod_mute_r, 0);
69 		break;
70 	case SPITZ_LINE:
71 		/* enable line jack, disable mic bias and mute hp */
72 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
73 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
74 		snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
75 		snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");
76 		gpiod_set_value(gpiod_mute_l, 0);
77 		gpiod_set_value(gpiod_mute_r, 0);
78 		break;
79 	case SPITZ_HEADSET:
80 		/* enable and unmute headset jack enable mic bias, mute L hp */
81 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
82 		snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
83 		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
84 		snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
85 		gpiod_set_value(gpiod_mute_l, 0);
86 		gpiod_set_value(gpiod_mute_r, 1);
87 		break;
88 	case SPITZ_HP_OFF:
89 
90 		/* jack removed, everything off */
91 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
92 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
93 		snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
94 		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
95 		gpiod_set_value(gpiod_mute_l, 0);
96 		gpiod_set_value(gpiod_mute_r, 0);
97 		break;
98 	}
99 
100 	snd_soc_dapm_sync_unlocked(dapm);
101 
102 	snd_soc_dapm_mutex_unlock(dapm);
103 }
104 
spitz_startup(struct snd_pcm_substream * substream)105 static int spitz_startup(struct snd_pcm_substream *substream)
106 {
107 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
108 
109 	/* check the jack status at stream startup */
110 	spitz_ext_control(&rtd->card->dapm);
111 
112 	return 0;
113 }
114 
spitz_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)115 static int spitz_hw_params(struct snd_pcm_substream *substream,
116 	struct snd_pcm_hw_params *params)
117 {
118 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
119 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
120 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
121 	unsigned int clk = 0;
122 	int ret = 0;
123 
124 	switch (params_rate(params)) {
125 	case 8000:
126 	case 16000:
127 	case 48000:
128 	case 96000:
129 		clk = 12288000;
130 		break;
131 	case 11025:
132 	case 22050:
133 	case 44100:
134 		clk = 11289600;
135 		break;
136 	}
137 
138 	/* set the codec system clock for DAC and ADC */
139 	ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
140 		SND_SOC_CLOCK_IN);
141 	if (ret < 0)
142 		return ret;
143 
144 	/* set the I2S system clock as input (unused) */
145 	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
146 		SND_SOC_CLOCK_IN);
147 	if (ret < 0)
148 		return ret;
149 
150 	return 0;
151 }
152 
153 static const struct snd_soc_ops spitz_ops = {
154 	.startup = spitz_startup,
155 	.hw_params = spitz_hw_params,
156 };
157 
spitz_get_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)158 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
159 	struct snd_ctl_elem_value *ucontrol)
160 {
161 	ucontrol->value.enumerated.item[0] = spitz_jack_func;
162 	return 0;
163 }
164 
spitz_set_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)165 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
166 	struct snd_ctl_elem_value *ucontrol)
167 {
168 	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
169 
170 	if (spitz_jack_func == ucontrol->value.enumerated.item[0])
171 		return 0;
172 
173 	spitz_jack_func = ucontrol->value.enumerated.item[0];
174 	spitz_ext_control(&card->dapm);
175 	return 1;
176 }
177 
spitz_get_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)178 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
179 	struct snd_ctl_elem_value *ucontrol)
180 {
181 	ucontrol->value.enumerated.item[0] = spitz_spk_func;
182 	return 0;
183 }
184 
spitz_set_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)185 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
186 	struct snd_ctl_elem_value *ucontrol)
187 {
188 	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
189 
190 	if (spitz_spk_func == ucontrol->value.enumerated.item[0])
191 		return 0;
192 
193 	spitz_spk_func = ucontrol->value.enumerated.item[0];
194 	spitz_ext_control(&card->dapm);
195 	return 1;
196 }
197 
spitz_mic_bias(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)198 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
199 	struct snd_kcontrol *k, int event)
200 {
201 	gpiod_set_value_cansleep(gpiod_mic, SND_SOC_DAPM_EVENT_ON(event));
202 	return 0;
203 }
204 
205 /* spitz machine dapm widgets */
206 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
207 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
208 	SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
209 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
210 	SND_SOC_DAPM_LINE("Line Jack", NULL),
211 
212 	/* headset is a mic and mono headphone */
213 	SND_SOC_DAPM_HP("Headset Jack", NULL),
214 };
215 
216 /* Spitz machine audio_map */
217 static const struct snd_soc_dapm_route spitz_audio_map[] = {
218 
219 	/* headphone connected to LOUT1, ROUT1 */
220 	{"Headphone Jack", NULL, "LOUT1"},
221 	{"Headphone Jack", NULL, "ROUT1"},
222 
223 	/* headset connected to ROUT1 and LINPUT1 with bias (def below) */
224 	{"Headset Jack", NULL, "ROUT1"},
225 
226 	/* ext speaker connected to LOUT2, ROUT2  */
227 	{"Ext Spk", NULL, "ROUT2"},
228 	{"Ext Spk", NULL, "LOUT2"},
229 
230 	/* mic is connected to input 1 - with bias */
231 	{"LINPUT1", NULL, "Mic Bias"},
232 	{"Mic Bias", NULL, "Mic Jack"},
233 
234 	/* line is connected to input 1 - no bias */
235 	{"LINPUT1", NULL, "Line Jack"},
236 };
237 
238 static const char * const jack_function[] = {"Headphone", "Mic", "Line",
239 	"Headset", "Off"};
240 static const char * const spk_function[] = {"On", "Off"};
241 static const struct soc_enum spitz_enum[] = {
242 	SOC_ENUM_SINGLE_EXT(5, jack_function),
243 	SOC_ENUM_SINGLE_EXT(2, spk_function),
244 };
245 
246 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
247 	SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
248 		spitz_set_jack),
249 	SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
250 		spitz_set_spk),
251 };
252 
253 /* spitz digital audio interface glue - connects codec <--> CPU */
254 SND_SOC_DAILINK_DEFS(wm8750,
255 	DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")),
256 	DAILINK_COMP_ARRAY(COMP_CODEC("wm8750.0-001b", "wm8750-hifi")),
257 	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
258 
259 static struct snd_soc_dai_link spitz_dai = {
260 	.name = "wm8750",
261 	.stream_name = "WM8750",
262 	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
263 		   SND_SOC_DAIFMT_CBS_CFS,
264 	.ops = &spitz_ops,
265 	SND_SOC_DAILINK_REG(wm8750),
266 };
267 
268 /* spitz audio machine driver */
269 static struct snd_soc_card snd_soc_spitz = {
270 	.name = "Spitz",
271 	.owner = THIS_MODULE,
272 	.dai_link = &spitz_dai,
273 	.num_links = 1,
274 
275 	.controls = wm8750_spitz_controls,
276 	.num_controls = ARRAY_SIZE(wm8750_spitz_controls),
277 	.dapm_widgets = wm8750_dapm_widgets,
278 	.num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
279 	.dapm_routes = spitz_audio_map,
280 	.num_dapm_routes = ARRAY_SIZE(spitz_audio_map),
281 	.fully_routed = true,
282 };
283 
spitz_probe(struct platform_device * pdev)284 static int spitz_probe(struct platform_device *pdev)
285 {
286 	struct snd_soc_card *card = &snd_soc_spitz;
287 	int ret;
288 
289 	gpiod_mic = devm_gpiod_get(&pdev->dev, "mic", GPIOD_OUT_LOW);
290 	if (IS_ERR(gpiod_mic))
291 		return PTR_ERR(gpiod_mic);
292 	gpiod_mute_l = devm_gpiod_get(&pdev->dev, "mute-l", GPIOD_OUT_LOW);
293 	if (IS_ERR(gpiod_mute_l))
294 		return PTR_ERR(gpiod_mute_l);
295 	gpiod_mute_r = devm_gpiod_get(&pdev->dev, "mute-r", GPIOD_OUT_LOW);
296 	if (IS_ERR(gpiod_mute_r))
297 		return PTR_ERR(gpiod_mute_r);
298 
299 	card->dev = &pdev->dev;
300 
301 	ret = devm_snd_soc_register_card(&pdev->dev, card);
302 	if (ret)
303 		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
304 			ret);
305 
306 	return ret;
307 }
308 
309 static struct platform_driver spitz_driver = {
310 	.driver		= {
311 		.name	= "spitz-audio",
312 		.pm     = &snd_soc_pm_ops,
313 	},
314 	.probe		= spitz_probe,
315 };
316 
317 module_platform_driver(spitz_driver);
318 
319 MODULE_AUTHOR("Richard Purdie");
320 MODULE_DESCRIPTION("ALSA SoC Spitz");
321 MODULE_LICENSE("GPL");
322 MODULE_ALIAS("platform:spitz-audio");
323