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 <liam.girdwood@wolfsonmicro.com>
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 * Revision history
16 * 30th Nov 2005 Initial version.
17 *
18 */
19
20 #include <linux/module.h>
21 #include <linux/moduleparam.h>
22 #include <linux/timer.h>
23 #include <linux/interrupt.h>
24 #include <linux/platform_device.h>
25 #include <sound/core.h>
26 #include <sound/pcm.h>
27 #include <sound/soc.h>
28 #include <sound/soc-dapm.h>
29
30 #include <asm/mach-types.h>
31 #include <asm/hardware/scoop.h>
32 #include <asm/arch/pxa-regs.h>
33 #include <asm/arch/hardware.h>
34 #include <asm/arch/corgi.h>
35 #include <asm/arch/audio.h>
36
37 #include "../codecs/wm8731.h"
38 #include "pxa2xx-pcm.h"
39 #include "pxa2xx-i2s.h"
40
41 #define CORGI_HP 0
42 #define CORGI_MIC 1
43 #define CORGI_LINE 2
44 #define CORGI_HEADSET 3
45 #define CORGI_HP_OFF 4
46 #define CORGI_SPK_ON 0
47 #define CORGI_SPK_OFF 1
48
49 /* audio clock in Hz - rounded from 12.235MHz */
50 #define CORGI_AUDIO_CLOCK 12288000
51
52 static int corgi_jack_func;
53 static int corgi_spk_func;
54
55 static void corgi_ext_control(struct snd_soc_codec *codec)
56 {
57 int spk = 0, mic = 0, line = 0, hp = 0, hs = 0;
58
59 /* set up jack connection */
60 switch (corgi_jack_func) {
61 case CORGI_HP:
62 hp = 1;
63 /* set = unmute headphone */
64 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
65 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
66 break;
67 case CORGI_MIC:
68 mic = 1;
69 /* reset = mute headphone */
70 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
71 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
72 break;
73 case CORGI_LINE:
74 line = 1;
75 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
76 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
77 break;
78 case CORGI_HEADSET:
79 hs = 1;
80 mic = 1;
81 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
82 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
83 break;
84 }
85
86 if (corgi_spk_func == CORGI_SPK_ON)
87 spk = 1;
88
89 /* set the enpoints to their new connetion states */
90 snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk);
91 snd_soc_dapm_set_endpoint(codec, "Mic Jack", mic);
92 snd_soc_dapm_set_endpoint(codec, "Line Jack", line);
93 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", hp);
94 snd_soc_dapm_set_endpoint(codec, "Headset Jack", hs);
95
96 /* signal a DAPM event */
97 snd_soc_dapm_sync_endpoints(codec);
98 }
99
100 static int corgi_startup(struct snd_pcm_substream *substream)
101 {
102 struct snd_soc_pcm_runtime *rtd = substream->private_data;
103 struct snd_soc_codec *codec = rtd->socdev->codec;
104
105 /* check the jack status at stream startup */
106 corgi_ext_control(codec);
107 return 0;
108 }
109
110 /* we need to unmute the HP at shutdown as the mute burns power on corgi */
111 static int corgi_shutdown(struct snd_pcm_substream *substream)
112 {
113 struct snd_soc_pcm_runtime *rtd = substream->private_data;
114 struct snd_soc_codec *codec = rtd->socdev->codec;
115
116 /* set = unmute headphone */
117 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
118 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
119 return 0;
120 }
121
122 static int corgi_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_codec_dai *codec_dai = rtd->dai->codec_dai;
127 struct snd_soc_cpu_dai *cpu_dai = rtd->dai->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 = codec_dai->dai_ops.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 = cpu_dai->dai_ops.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 = codec_dai->dai_ops.set_sysclk(codec_dai, WM8731_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 = cpu_dai->dai_ops.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 corgi_ops = {
173 .startup = corgi_startup,
174 .hw_params = corgi_hw_params,
175 .shutdown = corgi_shutdown,
176 };
177
178 static int corgi_get_jack(struct snd_kcontrol *kcontrol,
179 struct snd_ctl_elem_value *ucontrol)
180 {
181 ucontrol->value.integer.value[0] = corgi_jack_func;
182 return 0;
183 }
184
185 static int corgi_set_jack(struct snd_kcontrol *kcontrol,
186 struct snd_ctl_elem_value *ucontrol)
187 {
188 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
189
190 if (corgi_jack_func == ucontrol->value.integer.value[0])
191 return 0;
192
193 corgi_jack_func = ucontrol->value.integer.value[0];
194 corgi_ext_control(codec);
195 return 1;
196 }
197
198 static int corgi_get_spk(struct snd_kcontrol *kcontrol,
199 struct snd_ctl_elem_value *ucontrol)
200 {
201 ucontrol->value.integer.value[0] = corgi_spk_func;
202 return 0;
203 }
204
205 static int corgi_set_spk(struct snd_kcontrol *kcontrol,
206 struct snd_ctl_elem_value *ucontrol)
207 {
208 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
209
210 if (corgi_spk_func == ucontrol->value.integer.value[0])
211 return 0;
212
213 corgi_spk_func = ucontrol->value.integer.value[0];
214 corgi_ext_control(codec);
215 return 1;
216 }
217
218 static int corgi_amp_event(struct snd_soc_dapm_widget *w,
219 struct snd_kcontrol *k, int event)
220 {
221 if (SND_SOC_DAPM_EVENT_ON(event))
222 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
223 else
224 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
225
226 return 0;
227 }
228
229 static int corgi_mic_event(struct snd_soc_dapm_widget *w,
230 struct snd_kcontrol *k, int event)
231 {
232 if (SND_SOC_DAPM_EVENT_ON(event))
233 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
234 else
235 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
236
237 return 0;
238 }
239
240 /* corgi machine dapm widgets */
241 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
242 SND_SOC_DAPM_HP("Headphone Jack", NULL),
243 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
244 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
245 SND_SOC_DAPM_LINE("Line Jack", NULL),
246 SND_SOC_DAPM_HP("Headset Jack", NULL),
247 };
248
249 /* Corgi machine audio map (connections to the codec pins) */
250 static const char *audio_map[][3] = {
251
252 /* headset Jack - in = micin, out = LHPOUT*/
253 {"Headset Jack", NULL, "LHPOUT"},
254
255 /* headphone connected to LHPOUT1, RHPOUT1 */
256 {"Headphone Jack", NULL, "LHPOUT"},
257 {"Headphone Jack", NULL, "RHPOUT"},
258
259 /* speaker connected to LOUT, ROUT */
260 {"Ext Spk", NULL, "ROUT"},
261 {"Ext Spk", NULL, "LOUT"},
262
263 /* mic is connected to MICIN (via right channel of headphone jack) */
264 {"MICIN", NULL, "Mic Jack"},
265
266 /* Same as the above but no mic bias for line signals */
267 {"MICIN", NULL, "Line Jack"},
268
269 {NULL, NULL, NULL},
270 };
271
272 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
273 "Off"};
274 static const char *spk_function[] = {"On", "Off"};
275 static const struct soc_enum corgi_enum[] = {
276 SOC_ENUM_SINGLE_EXT(5, jack_function),
277 SOC_ENUM_SINGLE_EXT(2, spk_function),
278 };
279
280 static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
281 SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
282 corgi_set_jack),
283 SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
284 corgi_set_spk),
285 };
286
287 /*
288 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
289 */
290 static int corgi_wm8731_init(struct snd_soc_codec *codec)
291 {
292 int i, err;
293
294 snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);
295 snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);
296
297 /* Add corgi specific controls */
298 for (i = 0; i < ARRAY_SIZE(wm8731_corgi_controls); i++) {
299 err = snd_ctl_add(codec->card,
300 snd_soc_cnew(&wm8731_corgi_controls[i],codec, NULL));
301 if (err < 0)
302 return err;
303 }
304
305 /* Add corgi specific widgets */
306 for(i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) {
307 snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]);
308 }
309
310 /* Set up corgi specific audio path audio_map */
311 for(i = 0; audio_map[i][0] != NULL; i++) {
312 snd_soc_dapm_connect_input(codec, audio_map[i][0],
313 audio_map[i][1], audio_map[i][2]);
314 }
315
316 snd_soc_dapm_sync_endpoints(codec);
317 return 0;
318 }
319
320 /* corgi digital audio interface glue - connects codec <--> CPU */
321 static struct snd_soc_dai_link corgi_dai = {
322 .name = "WM8731",
323 .stream_name = "WM8731",
324 .cpu_dai = &pxa_i2s_dai,
325 .codec_dai = &wm8731_dai,
326 .init = corgi_wm8731_init,
327 .ops = &corgi_ops,
328 };
329
330 /* corgi audio machine driver */
331 static struct snd_soc_machine snd_soc_machine_corgi = {
332 .name = "Corgi",
333 .dai_link = &corgi_dai,
334 .num_links = 1,
335 };
336
337 /* corgi audio private data */
338 static struct wm8731_setup_data corgi_wm8731_setup = {
339 .i2c_address = 0x1b,
340 };
341
342 /* corgi audio subsystem */
343 static struct snd_soc_device corgi_snd_devdata = {
344 .machine = &snd_soc_machine_corgi,
345 .platform = &pxa2xx_soc_platform,
346 .codec_dev = &soc_codec_dev_wm8731,
347 .codec_data = &corgi_wm8731_setup,
348 };
349
350 static struct platform_device *corgi_snd_device;
351
352 static int __init corgi_init(void)
353 {
354 int ret;
355
356 if (!(machine_is_corgi() || machine_is_shepherd() || machine_is_husky()))
357 return -ENODEV;
358
359 corgi_snd_device = platform_device_alloc("soc-audio", -1);
360 if (!corgi_snd_device)
361 return -ENOMEM;
362
363 platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
364 corgi_snd_devdata.dev = &corgi_snd_device->dev;
365 ret = platform_device_add(corgi_snd_device);
366
367 if (ret)
368 platform_device_put(corgi_snd_device);
369
370 return ret;
371 }
372
373 static void __exit corgi_exit(void)
374 {
375 platform_device_unregister(corgi_snd_device);
376 }
377
378 module_init(corgi_init);
379 module_exit(corgi_exit);
380
381 /* Module information */
382 MODULE_AUTHOR("Richard Purdie");
383 MODULE_DESCRIPTION("ALSA SoC Corgi");
384 MODULE_LICENSE("GPL");
385
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