1 /*
2 * corgi.c -- SoC audio for Corgi
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 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/timer.h>
19 #include <linux/i2c.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 #include <sound/soc-dapm.h>
27
28 #include <asm/mach-types.h>
29 #include <mach/corgi.h>
30 #include <mach/audio.h>
31
32 #include "../codecs/wm8731.h"
33 #include "pxa2xx-pcm.h"
34 #include "pxa2xx-i2s.h"
35
36 #define CORGI_HP 0
37 #define CORGI_MIC 1
38 #define CORGI_LINE 2
39 #define CORGI_HEADSET 3
40 #define CORGI_HP_OFF 4
41 #define CORGI_SPK_ON 0
42 #define CORGI_SPK_OFF 1
43
44 /* audio clock in Hz - rounded from 12.235MHz */
45 #define CORGI_AUDIO_CLOCK 12288000
46
47 static int corgi_jack_func;
48 static int corgi_spk_func;
49
50 static void corgi_ext_control(struct snd_soc_codec *codec)
51 {
52 /* set up jack connection */
53 switch (corgi_jack_func) {
54 case CORGI_HP:
55 /* set = unmute headphone */
56 gpio_set_value(CORGI_GPIO_MUTE_L, 1);
57 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
58 snd_soc_dapm_disable_pin(codec, "Mic Jack");
59 snd_soc_dapm_disable_pin(codec, "Line Jack");
60 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
61 snd_soc_dapm_disable_pin(codec, "Headset Jack");
62 break;
63 case CORGI_MIC:
64 /* reset = mute headphone */
65 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
66 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
67 snd_soc_dapm_enable_pin(codec, "Mic Jack");
68 snd_soc_dapm_disable_pin(codec, "Line Jack");
69 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
70 snd_soc_dapm_disable_pin(codec, "Headset Jack");
71 break;
72 case CORGI_LINE:
73 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
74 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
75 snd_soc_dapm_disable_pin(codec, "Mic Jack");
76 snd_soc_dapm_enable_pin(codec, "Line Jack");
77 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
78 snd_soc_dapm_disable_pin(codec, "Headset Jack");
79 break;
80 case CORGI_HEADSET:
81 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
82 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
83 snd_soc_dapm_enable_pin(codec, "Mic Jack");
84 snd_soc_dapm_disable_pin(codec, "Line Jack");
85 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
86 snd_soc_dapm_enable_pin(codec, "Headset Jack");
87 break;
88 }
89
90 if (corgi_spk_func == CORGI_SPK_ON)
91 snd_soc_dapm_enable_pin(codec, "Ext Spk");
92 else
93 snd_soc_dapm_disable_pin(codec, "Ext Spk");
94
95 /* signal a DAPM event */
96 snd_soc_dapm_sync(codec);
97 }
98
99 static int corgi_startup(struct snd_pcm_substream *substream)
100 {
101 struct snd_soc_pcm_runtime *rtd = substream->private_data;
102 struct snd_soc_codec *codec = rtd->socdev->card->codec;
103
104 /* check the jack status at stream startup */
105 corgi_ext_control(codec);
106 return 0;
107 }
108
109 /* we need to unmute the HP at shutdown as the mute burns power on corgi */
110 static void corgi_shutdown(struct snd_pcm_substream *substream)
111 {
112 /* set = unmute headphone */
113 gpio_set_value(CORGI_GPIO_MUTE_L, 1);
114 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
115 }
116
117 static int corgi_hw_params(struct snd_pcm_substream *substream,
118 struct snd_pcm_hw_params *params)
119 {
120 struct snd_soc_pcm_runtime *rtd = substream->private_data;
121 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
122 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
123 unsigned int clk = 0;
124 int ret = 0;
125
126 switch (params_rate(params)) {
127 case 8000:
128 case 16000:
129 case 48000:
130 case 96000:
131 clk = 12288000;
132 break;
133 case 11025:
134 case 22050:
135 case 44100:
136 clk = 11289600;
137 break;
138 }
139
140 /* set codec DAI configuration */
141 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
142 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
143 if (ret < 0)
144 return ret;
145
146 /* set cpu DAI configuration */
147 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
148 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
149 if (ret < 0)
150 return ret;
151
152 /* set the codec system clock for DAC and ADC */
153 ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, clk,
154 SND_SOC_CLOCK_IN);
155 if (ret < 0)
156 return ret;
157
158 /* set the I2S system clock as input (unused) */
159 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
160 SND_SOC_CLOCK_IN);
161 if (ret < 0)
162 return ret;
163
164 return 0;
165 }
166
167 static struct snd_soc_ops corgi_ops = {
168 .startup = corgi_startup,
169 .hw_params = corgi_hw_params,
170 .shutdown = corgi_shutdown,
171 };
172
173 static int corgi_get_jack(struct snd_kcontrol *kcontrol,
174 struct snd_ctl_elem_value *ucontrol)
175 {
176 ucontrol->value.integer.value[0] = corgi_jack_func;
177 return 0;
178 }
179
180 static int corgi_set_jack(struct snd_kcontrol *kcontrol,
181 struct snd_ctl_elem_value *ucontrol)
182 {
183 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
184
185 if (corgi_jack_func == ucontrol->value.integer.value[0])
186 return 0;
187
188 corgi_jack_func = ucontrol->value.integer.value[0];
189 corgi_ext_control(codec);
190 return 1;
191 }
192
193 static int corgi_get_spk(struct snd_kcontrol *kcontrol,
194 struct snd_ctl_elem_value *ucontrol)
195 {
196 ucontrol->value.integer.value[0] = corgi_spk_func;
197 return 0;
198 }
199
200 static int corgi_set_spk(struct snd_kcontrol *kcontrol,
201 struct snd_ctl_elem_value *ucontrol)
202 {
203 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
204
205 if (corgi_spk_func == ucontrol->value.integer.value[0])
206 return 0;
207
208 corgi_spk_func = ucontrol->value.integer.value[0];
209 corgi_ext_control(codec);
210 return 1;
211 }
212
213 static int corgi_amp_event(struct snd_soc_dapm_widget *w,
214 struct snd_kcontrol *k, int event)
215 {
216 gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event));
217 return 0;
218 }
219
220 static int corgi_mic_event(struct snd_soc_dapm_widget *w,
221 struct snd_kcontrol *k, int event)
222 {
223 gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event));
224 return 0;
225 }
226
227 /* corgi machine dapm widgets */
228 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
229 SND_SOC_DAPM_HP("Headphone Jack", NULL),
230 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
231 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
232 SND_SOC_DAPM_LINE("Line Jack", NULL),
233 SND_SOC_DAPM_HP("Headset Jack", NULL),
234 };
235
236 /* Corgi machine audio map (connections to the codec pins) */
237 static const struct snd_soc_dapm_route audio_map[] = {
238
239 /* headset Jack - in = micin, out = LHPOUT*/
240 {"Headset Jack", NULL, "LHPOUT"},
241
242 /* headphone connected to LHPOUT1, RHPOUT1 */
243 {"Headphone Jack", NULL, "LHPOUT"},
244 {"Headphone Jack", NULL, "RHPOUT"},
245
246 /* speaker connected to LOUT, ROUT */
247 {"Ext Spk", NULL, "ROUT"},
248 {"Ext Spk", NULL, "LOUT"},
249
250 /* mic is connected to MICIN (via right channel of headphone jack) */
251 {"MICIN", NULL, "Mic Jack"},
252
253 /* Same as the above but no mic bias for line signals */
254 {"MICIN", NULL, "Line Jack"},
255 };
256
257 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
258 "Off"};
259 static const char *spk_function[] = {"On", "Off"};
260 static const struct soc_enum corgi_enum[] = {
261 SOC_ENUM_SINGLE_EXT(5, jack_function),
262 SOC_ENUM_SINGLE_EXT(2, spk_function),
263 };
264
265 static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
266 SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
267 corgi_set_jack),
268 SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
269 corgi_set_spk),
270 };
271
272 /*
273 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
274 */
275 static int corgi_wm8731_init(struct snd_soc_codec *codec)
276 {
277 int err;
278
279 snd_soc_dapm_nc_pin(codec, "LLINEIN");
280 snd_soc_dapm_nc_pin(codec, "RLINEIN");
281
282 /* Add corgi specific controls */
283 err = snd_soc_add_controls(codec, wm8731_corgi_controls,
284 ARRAY_SIZE(wm8731_corgi_controls));
285 if (err < 0)
286 return err;
287
288 /* Add corgi specific widgets */
289 snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
290 ARRAY_SIZE(wm8731_dapm_widgets));
291
292 /* Set up corgi specific audio path audio_map */
293 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
294
295 snd_soc_dapm_sync(codec);
296 return 0;
297 }
298
299 /* corgi digital audio interface glue - connects codec <--> CPU */
300 static struct snd_soc_dai_link corgi_dai = {
301 .name = "WM8731",
302 .stream_name = "WM8731",
303 .cpu_dai = &pxa_i2s_dai,
304 .codec_dai = &wm8731_dai,
305 .init = corgi_wm8731_init,
306 .ops = &corgi_ops,
307 };
308
309 /* corgi audio machine driver */
310 static struct snd_soc_card snd_soc_corgi = {
311 .name = "Corgi",
312 .platform = &pxa2xx_soc_platform,
313 .dai_link = &corgi_dai,
314 .num_links = 1,
315 };
316
317 /* corgi audio subsystem */
318 static struct snd_soc_device corgi_snd_devdata = {
319 .card = &snd_soc_corgi,
320 .codec_dev = &soc_codec_dev_wm8731,
321 };
322
323 static struct platform_device *corgi_snd_device;
324
325 static int __init corgi_init(void)
326 {
327 int ret;
328
329 if (!(machine_is_corgi() || machine_is_shepherd() ||
330 machine_is_husky()))
331 return -ENODEV;
332
333 corgi_snd_device = platform_device_alloc("soc-audio", -1);
334 if (!corgi_snd_device)
335 return -ENOMEM;
336
337 platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
338 corgi_snd_devdata.dev = &corgi_snd_device->dev;
339 ret = platform_device_add(corgi_snd_device);
340
341 if (ret)
342 platform_device_put(corgi_snd_device);
343
344 return ret;
345 }
346
347 static void __exit corgi_exit(void)
348 {
349 platform_device_unregister(corgi_snd_device);
350 }
351
352 module_init(corgi_init);
353 module_exit(corgi_exit);
354
355 /* Module information */
356 MODULE_AUTHOR("Richard Purdie");
357 MODULE_DESCRIPTION("ALSA SoC Corgi");
358 MODULE_LICENSE("GPL");
359
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