xref: /openbmc/linux/sound/soc/pxa/spitz.c (revision df2634f43f5106947f3735a0b61a6527a4b278cd)
1 /*
2  * spitz.c  --  SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
3  *
4  * Copyright 2005 Wolfson Microelectronics PLC.
5  * Copyright 2005 Openedhand Ltd.
6  *
7  * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
8  *          Richard Purdie <richard@openedhand.com>
9  *
10  *  This program is free software; you can redistribute  it and/or modify it
11  *  under  the terms of  the GNU General  Public License as published by the
12  *  Free Software Foundation;  either version 2 of the  License, or (at your
13  *  option) any later version.
14  *
15  */
16 
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/timer.h>
20 #include <linux/interrupt.h>
21 #include <linux/platform_device.h>
22 #include <linux/gpio.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/soc.h>
26 
27 #include <asm/mach-types.h>
28 #include <mach/spitz.h>
29 #include "../codecs/wm8750.h"
30 #include "pxa2xx-i2s.h"
31 
32 #define SPITZ_HP        0
33 #define SPITZ_MIC       1
34 #define SPITZ_LINE      2
35 #define SPITZ_HEADSET   3
36 #define SPITZ_HP_OFF    4
37 #define SPITZ_SPK_ON    0
38 #define SPITZ_SPK_OFF   1
39 
40  /* audio clock in Hz - rounded from 12.235MHz */
41 #define SPITZ_AUDIO_CLOCK 12288000
42 
43 static int spitz_jack_func;
44 static int spitz_spk_func;
45 
46 static void spitz_ext_control(struct snd_soc_codec *codec)
47 {
48 	struct snd_soc_dapm_context *dapm = &codec->dapm;
49 
50 	if (spitz_spk_func == SPITZ_SPK_ON)
51 		snd_soc_dapm_enable_pin(dapm, "Ext Spk");
52 	else
53 		snd_soc_dapm_disable_pin(dapm, "Ext Spk");
54 
55 	/* set up jack connection */
56 	switch (spitz_jack_func) {
57 	case SPITZ_HP:
58 		/* enable and unmute hp jack, disable mic bias */
59 		snd_soc_dapm_disable_pin(dapm, "Headset Jack");
60 		snd_soc_dapm_disable_pin(dapm, "Mic Jack");
61 		snd_soc_dapm_disable_pin(dapm, "Line Jack");
62 		snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
63 		gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
64 		gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
65 		break;
66 	case SPITZ_MIC:
67 		/* enable mic jack and bias, mute hp */
68 		snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
69 		snd_soc_dapm_disable_pin(dapm, "Headset Jack");
70 		snd_soc_dapm_disable_pin(dapm, "Line Jack");
71 		snd_soc_dapm_enable_pin(dapm, "Mic Jack");
72 		gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
73 		gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
74 		break;
75 	case SPITZ_LINE:
76 		/* enable line jack, disable mic bias and mute hp */
77 		snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
78 		snd_soc_dapm_disable_pin(dapm, "Headset Jack");
79 		snd_soc_dapm_disable_pin(dapm, "Mic Jack");
80 		snd_soc_dapm_enable_pin(dapm, "Line Jack");
81 		gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
82 		gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
83 		break;
84 	case SPITZ_HEADSET:
85 		/* enable and unmute headset jack enable mic bias, mute L hp */
86 		snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
87 		snd_soc_dapm_enable_pin(dapm, "Mic Jack");
88 		snd_soc_dapm_disable_pin(dapm, "Line Jack");
89 		snd_soc_dapm_enable_pin(dapm, "Headset Jack");
90 		gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
91 		gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
92 		break;
93 	case SPITZ_HP_OFF:
94 
95 		/* jack removed, everything off */
96 		snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
97 		snd_soc_dapm_disable_pin(dapm, "Headset Jack");
98 		snd_soc_dapm_disable_pin(dapm, "Mic Jack");
99 		snd_soc_dapm_disable_pin(dapm, "Line Jack");
100 		gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
101 		gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
102 		break;
103 	}
104 	snd_soc_dapm_sync(dapm);
105 }
106 
107 static int spitz_startup(struct snd_pcm_substream *substream)
108 {
109 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
110 	struct snd_soc_codec *codec = rtd->codec;
111 
112 	mutex_lock(&codec->mutex);
113 
114 	/* check the jack status at stream startup */
115 	spitz_ext_control(codec);
116 
117 	mutex_unlock(&codec->mutex);
118 
119 	return 0;
120 }
121 
122 static int spitz_hw_params(struct snd_pcm_substream *substream,
123 	struct snd_pcm_hw_params *params)
124 {
125 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
126 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
127 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
128 	unsigned int clk = 0;
129 	int ret = 0;
130 
131 	switch (params_rate(params)) {
132 	case 8000:
133 	case 16000:
134 	case 48000:
135 	case 96000:
136 		clk = 12288000;
137 		break;
138 	case 11025:
139 	case 22050:
140 	case 44100:
141 		clk = 11289600;
142 		break;
143 	}
144 
145 	/* set codec DAI configuration */
146 	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
147 		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
148 	if (ret < 0)
149 		return ret;
150 
151 	/* set cpu DAI configuration */
152 	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
153 		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
154 	if (ret < 0)
155 		return ret;
156 
157 	/* set the codec system clock for DAC and ADC */
158 	ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
159 		SND_SOC_CLOCK_IN);
160 	if (ret < 0)
161 		return ret;
162 
163 	/* set the I2S system clock as input (unused) */
164 	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
165 		SND_SOC_CLOCK_IN);
166 	if (ret < 0)
167 		return ret;
168 
169 	return 0;
170 }
171 
172 static struct snd_soc_ops spitz_ops = {
173 	.startup = spitz_startup,
174 	.hw_params = spitz_hw_params,
175 };
176 
177 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
178 	struct snd_ctl_elem_value *ucontrol)
179 {
180 	ucontrol->value.integer.value[0] = spitz_jack_func;
181 	return 0;
182 }
183 
184 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
185 	struct snd_ctl_elem_value *ucontrol)
186 {
187 	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
188 
189 	if (spitz_jack_func == ucontrol->value.integer.value[0])
190 		return 0;
191 
192 	spitz_jack_func = ucontrol->value.integer.value[0];
193 	spitz_ext_control(codec);
194 	return 1;
195 }
196 
197 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
198 	struct snd_ctl_elem_value *ucontrol)
199 {
200 	ucontrol->value.integer.value[0] = spitz_spk_func;
201 	return 0;
202 }
203 
204 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
205 	struct snd_ctl_elem_value *ucontrol)
206 {
207 	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
208 
209 	if (spitz_spk_func == ucontrol->value.integer.value[0])
210 		return 0;
211 
212 	spitz_spk_func = ucontrol->value.integer.value[0];
213 	spitz_ext_control(codec);
214 	return 1;
215 }
216 
217 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
218 	struct snd_kcontrol *k, int event)
219 {
220 	if (machine_is_borzoi() || machine_is_spitz())
221 		gpio_set_value(SPITZ_GPIO_MIC_BIAS,
222 				SND_SOC_DAPM_EVENT_ON(event));
223 
224 	if (machine_is_akita())
225 		gpio_set_value(AKITA_GPIO_MIC_BIAS,
226 				SND_SOC_DAPM_EVENT_ON(event));
227 
228 	return 0;
229 }
230 
231 /* spitz machine dapm widgets */
232 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
233 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
234 	SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
235 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
236 	SND_SOC_DAPM_LINE("Line Jack", NULL),
237 
238 	/* headset is a mic and mono headphone */
239 	SND_SOC_DAPM_HP("Headset Jack", NULL),
240 };
241 
242 /* Spitz machine audio_map */
243 static const struct snd_soc_dapm_route audio_map[] = {
244 
245 	/* headphone connected to LOUT1, ROUT1 */
246 	{"Headphone Jack", NULL, "LOUT1"},
247 	{"Headphone Jack", NULL, "ROUT1"},
248 
249 	/* headset connected to ROUT1 and LINPUT1 with bias (def below) */
250 	{"Headset Jack", NULL, "ROUT1"},
251 
252 	/* ext speaker connected to LOUT2, ROUT2  */
253 	{"Ext Spk", NULL , "ROUT2"},
254 	{"Ext Spk", NULL , "LOUT2"},
255 
256 	/* mic is connected to input 1 - with bias */
257 	{"LINPUT1", NULL, "Mic Bias"},
258 	{"Mic Bias", NULL, "Mic Jack"},
259 
260 	/* line is connected to input 1 - no bias */
261 	{"LINPUT1", NULL, "Line Jack"},
262 };
263 
264 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
265 	"Off"};
266 static const char *spk_function[] = {"On", "Off"};
267 static const struct soc_enum spitz_enum[] = {
268 	SOC_ENUM_SINGLE_EXT(5, jack_function),
269 	SOC_ENUM_SINGLE_EXT(2, spk_function),
270 };
271 
272 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
273 	SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
274 		spitz_set_jack),
275 	SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
276 		spitz_set_spk),
277 };
278 
279 /*
280  * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
281  */
282 static int spitz_wm8750_init(struct snd_soc_pcm_runtime *rtd)
283 {
284 	struct snd_soc_codec *codec = rtd->codec;
285 	struct snd_soc_dapm_context *dapm = &codec->dapm;
286 	int err;
287 
288 	/* NC codec pins */
289 	snd_soc_dapm_nc_pin(dapm, "RINPUT1");
290 	snd_soc_dapm_nc_pin(dapm, "LINPUT2");
291 	snd_soc_dapm_nc_pin(dapm, "RINPUT2");
292 	snd_soc_dapm_nc_pin(dapm, "LINPUT3");
293 	snd_soc_dapm_nc_pin(dapm, "RINPUT3");
294 	snd_soc_dapm_nc_pin(dapm, "OUT3");
295 	snd_soc_dapm_nc_pin(dapm, "MONO1");
296 
297 	/* Add spitz specific controls */
298 	err = snd_soc_add_controls(codec, wm8750_spitz_controls,
299 				ARRAY_SIZE(wm8750_spitz_controls));
300 	if (err < 0)
301 		return err;
302 
303 	/* Add spitz specific widgets */
304 	snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
305 				  ARRAY_SIZE(wm8750_dapm_widgets));
306 
307 	/* Set up spitz specific audio paths */
308 	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
309 
310 	snd_soc_dapm_sync(dapm);
311 	return 0;
312 }
313 
314 /* spitz digital audio interface glue - connects codec <--> CPU */
315 static struct snd_soc_dai_link spitz_dai = {
316 	.name = "wm8750",
317 	.stream_name = "WM8750",
318 	.cpu_dai_name = "pxa2xx-i2s",
319 	.codec_dai_name = "wm8750-hifi",
320 	.platform_name = "pxa-pcm-audio",
321 	.codec_name = "wm8750-codec.0-001b",
322 	.init = spitz_wm8750_init,
323 	.ops = &spitz_ops,
324 };
325 
326 /* spitz audio machine driver */
327 static struct snd_soc_card snd_soc_spitz = {
328 	.name = "Spitz",
329 	.dai_link = &spitz_dai,
330 	.num_links = 1,
331 };
332 
333 static struct platform_device *spitz_snd_device;
334 
335 static int __init spitz_init(void)
336 {
337 	int ret;
338 
339 	if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
340 		return -ENODEV;
341 
342 	spitz_snd_device = platform_device_alloc("soc-audio", -1);
343 	if (!spitz_snd_device)
344 		return -ENOMEM;
345 
346 	platform_set_drvdata(spitz_snd_device, &snd_soc_spitz);
347 	ret = platform_device_add(spitz_snd_device);
348 
349 	if (ret)
350 		platform_device_put(spitz_snd_device);
351 
352 	return ret;
353 }
354 
355 static void __exit spitz_exit(void)
356 {
357 	platform_device_unregister(spitz_snd_device);
358 }
359 
360 module_init(spitz_init);
361 module_exit(spitz_exit);
362 
363 MODULE_AUTHOR("Richard Purdie");
364 MODULE_DESCRIPTION("ALSA SoC Spitz");
365 MODULE_LICENSE("GPL");
366