2 * corgi.c -- SoC audio for Corgi
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
7 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
8 * Richard Purdie <richard@openedhand.com>
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.
16 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/timer.h>
19 #include <linux/interrupt.h>
20 #include <linux/platform_device.h>
21 #include <linux/gpio.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/soc.h>
25 #include <sound/soc-dapm.h>
27 #include <asm/mach-types.h>
28 #include <mach/pxa-regs.h>
29 #include <mach/hardware.h>
30 #include <mach/corgi.h>
31 #include <mach/audio.h>
33 #include "../codecs/wm8731.h"
34 #include "pxa2xx-pcm.h"
35 #include "pxa2xx-i2s.h"
40 #define CORGI_HEADSET 3
41 #define CORGI_HP_OFF 4
42 #define CORGI_SPK_ON 0
43 #define CORGI_SPK_OFF 1
45 /* audio clock in Hz - rounded from 12.235MHz */
46 #define CORGI_AUDIO_CLOCK 12288000
48 static int corgi_jack_func;
49 static int corgi_spk_func;
51 static void corgi_ext_control(struct snd_soc_codec *codec)
53 /* set up jack connection */
54 switch (corgi_jack_func) {
56 /* set = unmute headphone */
57 gpio_set_value(CORGI_GPIO_MUTE_L, 1);
58 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
59 snd_soc_dapm_disable_pin(codec, "Mic Jack");
60 snd_soc_dapm_disable_pin(codec, "Line Jack");
61 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
62 snd_soc_dapm_disable_pin(codec, "Headset Jack");
65 /* reset = mute headphone */
66 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
67 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
68 snd_soc_dapm_enable_pin(codec, "Mic Jack");
69 snd_soc_dapm_disable_pin(codec, "Line Jack");
70 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
71 snd_soc_dapm_disable_pin(codec, "Headset Jack");
74 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
75 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
76 snd_soc_dapm_disable_pin(codec, "Mic Jack");
77 snd_soc_dapm_enable_pin(codec, "Line Jack");
78 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
79 snd_soc_dapm_disable_pin(codec, "Headset Jack");
82 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
83 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
84 snd_soc_dapm_enable_pin(codec, "Mic Jack");
85 snd_soc_dapm_disable_pin(codec, "Line Jack");
86 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
87 snd_soc_dapm_enable_pin(codec, "Headset Jack");
91 if (corgi_spk_func == CORGI_SPK_ON)
92 snd_soc_dapm_enable_pin(codec, "Ext Spk");
94 snd_soc_dapm_disable_pin(codec, "Ext Spk");
96 /* signal a DAPM event */
97 snd_soc_dapm_sync(codec);
100 static int corgi_startup(struct snd_pcm_substream *substream)
102 struct snd_soc_pcm_runtime *rtd = substream->private_data;
103 struct snd_soc_codec *codec = rtd->socdev->codec;
105 /* check the jack status at stream startup */
106 corgi_ext_control(codec);
110 /* we need to unmute the HP at shutdown as the mute burns power on corgi */
111 static void corgi_shutdown(struct snd_pcm_substream *substream)
113 /* set = unmute headphone */
114 gpio_set_value(CORGI_GPIO_MUTE_L, 1);
115 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
118 static int corgi_hw_params(struct snd_pcm_substream *substream,
119 struct snd_pcm_hw_params *params)
121 struct snd_soc_pcm_runtime *rtd = substream->private_data;
122 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
123 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
124 unsigned int clk = 0;
127 switch (params_rate(params)) {
141 /* set codec DAI configuration */
142 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
143 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
147 /* set cpu DAI configuration */
148 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
149 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
153 /* set the codec system clock for DAC and ADC */
154 ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, clk,
159 /* set the I2S system clock as input (unused) */
160 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
168 static struct snd_soc_ops corgi_ops = {
169 .startup = corgi_startup,
170 .hw_params = corgi_hw_params,
171 .shutdown = corgi_shutdown,
174 static int corgi_get_jack(struct snd_kcontrol *kcontrol,
175 struct snd_ctl_elem_value *ucontrol)
177 ucontrol->value.integer.value[0] = corgi_jack_func;
181 static int corgi_set_jack(struct snd_kcontrol *kcontrol,
182 struct snd_ctl_elem_value *ucontrol)
184 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
186 if (corgi_jack_func == ucontrol->value.integer.value[0])
189 corgi_jack_func = ucontrol->value.integer.value[0];
190 corgi_ext_control(codec);
194 static int corgi_get_spk(struct snd_kcontrol *kcontrol,
195 struct snd_ctl_elem_value *ucontrol)
197 ucontrol->value.integer.value[0] = corgi_spk_func;
201 static int corgi_set_spk(struct snd_kcontrol *kcontrol,
202 struct snd_ctl_elem_value *ucontrol)
204 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
206 if (corgi_spk_func == ucontrol->value.integer.value[0])
209 corgi_spk_func = ucontrol->value.integer.value[0];
210 corgi_ext_control(codec);
214 static int corgi_amp_event(struct snd_soc_dapm_widget *w,
215 struct snd_kcontrol *k, int event)
217 gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event));
221 static int corgi_mic_event(struct snd_soc_dapm_widget *w,
222 struct snd_kcontrol *k, int event)
224 gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event));
228 /* corgi machine dapm widgets */
229 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
230 SND_SOC_DAPM_HP("Headphone Jack", NULL),
231 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
232 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
233 SND_SOC_DAPM_LINE("Line Jack", NULL),
234 SND_SOC_DAPM_HP("Headset Jack", NULL),
237 /* Corgi machine audio map (connections to the codec pins) */
238 static const struct snd_soc_dapm_route audio_map[] = {
240 /* headset Jack - in = micin, out = LHPOUT*/
241 {"Headset Jack", NULL, "LHPOUT"},
243 /* headphone connected to LHPOUT1, RHPOUT1 */
244 {"Headphone Jack", NULL, "LHPOUT"},
245 {"Headphone Jack", NULL, "RHPOUT"},
247 /* speaker connected to LOUT, ROUT */
248 {"Ext Spk", NULL, "ROUT"},
249 {"Ext Spk", NULL, "LOUT"},
251 /* mic is connected to MICIN (via right channel of headphone jack) */
252 {"MICIN", NULL, "Mic Jack"},
254 /* Same as the above but no mic bias for line signals */
255 {"MICIN", NULL, "Line Jack"},
258 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
260 static const char *spk_function[] = {"On", "Off"};
261 static const struct soc_enum corgi_enum[] = {
262 SOC_ENUM_SINGLE_EXT(5, jack_function),
263 SOC_ENUM_SINGLE_EXT(2, spk_function),
266 static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
267 SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
269 SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
274 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
276 static int corgi_wm8731_init(struct snd_soc_codec *codec)
280 snd_soc_dapm_nc_pin(codec, "LLINEIN");
281 snd_soc_dapm_nc_pin(codec, "RLINEIN");
283 /* Add corgi specific controls */
284 for (i = 0; i < ARRAY_SIZE(wm8731_corgi_controls); i++) {
285 err = snd_ctl_add(codec->card,
286 snd_soc_cnew(&wm8731_corgi_controls[i], codec, NULL));
291 /* Add corgi specific widgets */
292 snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
293 ARRAY_SIZE(wm8731_dapm_widgets));
295 /* Set up corgi specific audio path audio_map */
296 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
298 snd_soc_dapm_sync(codec);
302 /* corgi digital audio interface glue - connects codec <--> CPU */
303 static struct snd_soc_dai_link corgi_dai = {
305 .stream_name = "WM8731",
306 .cpu_dai = &pxa_i2s_dai,
307 .codec_dai = &wm8731_dai,
308 .init = corgi_wm8731_init,
312 /* corgi audio machine driver */
313 static struct snd_soc_card snd_soc_corgi = {
315 .platform = &pxa2xx_soc_platform,
316 .dai_link = &corgi_dai,
320 /* corgi audio private data */
321 static struct wm8731_setup_data corgi_wm8731_setup = {
326 /* corgi audio subsystem */
327 static struct snd_soc_device corgi_snd_devdata = {
328 .card = &snd_soc_corgi,
329 .codec_dev = &soc_codec_dev_wm8731,
330 .codec_data = &corgi_wm8731_setup,
333 static struct platform_device *corgi_snd_device;
335 static int __init corgi_init(void)
339 if (!(machine_is_corgi() || machine_is_shepherd() ||
343 corgi_snd_device = platform_device_alloc("soc-audio", -1);
344 if (!corgi_snd_device)
347 platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
348 corgi_snd_devdata.dev = &corgi_snd_device->dev;
349 ret = platform_device_add(corgi_snd_device);
352 platform_device_put(corgi_snd_device);
357 static void __exit corgi_exit(void)
359 platform_device_unregister(corgi_snd_device);
362 module_init(corgi_init);
363 module_exit(corgi_exit);
365 /* Module information */
366 MODULE_AUTHOR("Richard Purdie");
367 MODULE_DESCRIPTION("ALSA SoC Corgi");
368 MODULE_LICENSE("GPL");