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/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>
28 #include <asm/mach-types.h>
29 #include <mach/corgi.h>
30 #include <mach/audio.h>
32 #include "../codecs/wm8731.h"
33 #include "pxa2xx-i2s.h"
38 #define CORGI_HEADSET 3
39 #define CORGI_HP_OFF 4
40 #define CORGI_SPK_ON 0
41 #define CORGI_SPK_OFF 1
43 /* audio clock in Hz - rounded from 12.235MHz */
44 #define CORGI_AUDIO_CLOCK 12288000
46 static int corgi_jack_func
;
47 static int corgi_spk_func
;
49 static void corgi_ext_control(struct snd_soc_codec
*codec
)
51 /* set up jack connection */
52 switch (corgi_jack_func
) {
54 /* set = unmute headphone */
55 gpio_set_value(CORGI_GPIO_MUTE_L
, 1);
56 gpio_set_value(CORGI_GPIO_MUTE_R
, 1);
57 snd_soc_dapm_disable_pin(codec
, "Mic Jack");
58 snd_soc_dapm_disable_pin(codec
, "Line Jack");
59 snd_soc_dapm_enable_pin(codec
, "Headphone Jack");
60 snd_soc_dapm_disable_pin(codec
, "Headset Jack");
63 /* reset = mute headphone */
64 gpio_set_value(CORGI_GPIO_MUTE_L
, 0);
65 gpio_set_value(CORGI_GPIO_MUTE_R
, 0);
66 snd_soc_dapm_enable_pin(codec
, "Mic Jack");
67 snd_soc_dapm_disable_pin(codec
, "Line Jack");
68 snd_soc_dapm_disable_pin(codec
, "Headphone Jack");
69 snd_soc_dapm_disable_pin(codec
, "Headset Jack");
72 gpio_set_value(CORGI_GPIO_MUTE_L
, 0);
73 gpio_set_value(CORGI_GPIO_MUTE_R
, 0);
74 snd_soc_dapm_disable_pin(codec
, "Mic Jack");
75 snd_soc_dapm_enable_pin(codec
, "Line Jack");
76 snd_soc_dapm_disable_pin(codec
, "Headphone Jack");
77 snd_soc_dapm_disable_pin(codec
, "Headset Jack");
80 gpio_set_value(CORGI_GPIO_MUTE_L
, 0);
81 gpio_set_value(CORGI_GPIO_MUTE_R
, 1);
82 snd_soc_dapm_enable_pin(codec
, "Mic Jack");
83 snd_soc_dapm_disable_pin(codec
, "Line Jack");
84 snd_soc_dapm_disable_pin(codec
, "Headphone Jack");
85 snd_soc_dapm_enable_pin(codec
, "Headset Jack");
89 if (corgi_spk_func
== CORGI_SPK_ON
)
90 snd_soc_dapm_enable_pin(codec
, "Ext Spk");
92 snd_soc_dapm_disable_pin(codec
, "Ext Spk");
94 /* signal a DAPM event */
95 snd_soc_dapm_sync(codec
);
98 static int corgi_startup(struct snd_pcm_substream
*substream
)
100 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
101 struct snd_soc_codec
*codec
= rtd
->codec
;
103 /* check the jack status at stream startup */
104 corgi_ext_control(codec
);
108 /* we need to unmute the HP at shutdown as the mute burns power on corgi */
109 static void corgi_shutdown(struct snd_pcm_substream
*substream
)
111 /* set = unmute headphone */
112 gpio_set_value(CORGI_GPIO_MUTE_L
, 1);
113 gpio_set_value(CORGI_GPIO_MUTE_R
, 1);
116 static int corgi_hw_params(struct snd_pcm_substream
*substream
,
117 struct snd_pcm_hw_params
*params
)
119 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
120 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
121 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
122 unsigned int clk
= 0;
125 switch (params_rate(params
)) {
139 /* set codec DAI configuration */
140 ret
= snd_soc_dai_set_fmt(codec_dai
, SND_SOC_DAIFMT_I2S
|
141 SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBS_CFS
);
145 /* set cpu DAI configuration */
146 ret
= snd_soc_dai_set_fmt(cpu_dai
, SND_SOC_DAIFMT_I2S
|
147 SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBS_CFS
);
151 /* set the codec system clock for DAC and ADC */
152 ret
= snd_soc_dai_set_sysclk(codec_dai
, WM8731_SYSCLK_XTAL
, clk
,
157 /* set the I2S system clock as input (unused) */
158 ret
= snd_soc_dai_set_sysclk(cpu_dai
, PXA2XX_I2S_SYSCLK
, 0,
166 static struct snd_soc_ops corgi_ops
= {
167 .startup
= corgi_startup
,
168 .hw_params
= corgi_hw_params
,
169 .shutdown
= corgi_shutdown
,
172 static int corgi_get_jack(struct snd_kcontrol
*kcontrol
,
173 struct snd_ctl_elem_value
*ucontrol
)
175 ucontrol
->value
.integer
.value
[0] = corgi_jack_func
;
179 static int corgi_set_jack(struct snd_kcontrol
*kcontrol
,
180 struct snd_ctl_elem_value
*ucontrol
)
182 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
184 if (corgi_jack_func
== ucontrol
->value
.integer
.value
[0])
187 corgi_jack_func
= ucontrol
->value
.integer
.value
[0];
188 corgi_ext_control(codec
);
192 static int corgi_get_spk(struct snd_kcontrol
*kcontrol
,
193 struct snd_ctl_elem_value
*ucontrol
)
195 ucontrol
->value
.integer
.value
[0] = corgi_spk_func
;
199 static int corgi_set_spk(struct snd_kcontrol
*kcontrol
,
200 struct snd_ctl_elem_value
*ucontrol
)
202 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
204 if (corgi_spk_func
== ucontrol
->value
.integer
.value
[0])
207 corgi_spk_func
= ucontrol
->value
.integer
.value
[0];
208 corgi_ext_control(codec
);
212 static int corgi_amp_event(struct snd_soc_dapm_widget
*w
,
213 struct snd_kcontrol
*k
, int event
)
215 gpio_set_value(CORGI_GPIO_APM_ON
, SND_SOC_DAPM_EVENT_ON(event
));
219 static int corgi_mic_event(struct snd_soc_dapm_widget
*w
,
220 struct snd_kcontrol
*k
, int event
)
222 gpio_set_value(CORGI_GPIO_MIC_BIAS
, SND_SOC_DAPM_EVENT_ON(event
));
226 /* corgi machine dapm widgets */
227 static const struct snd_soc_dapm_widget wm8731_dapm_widgets
[] = {
228 SND_SOC_DAPM_HP("Headphone Jack", NULL
),
229 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event
),
230 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event
),
231 SND_SOC_DAPM_LINE("Line Jack", NULL
),
232 SND_SOC_DAPM_HP("Headset Jack", NULL
),
235 /* Corgi machine audio map (connections to the codec pins) */
236 static const struct snd_soc_dapm_route audio_map
[] = {
238 /* headset Jack - in = micin, out = LHPOUT*/
239 {"Headset Jack", NULL
, "LHPOUT"},
241 /* headphone connected to LHPOUT1, RHPOUT1 */
242 {"Headphone Jack", NULL
, "LHPOUT"},
243 {"Headphone Jack", NULL
, "RHPOUT"},
245 /* speaker connected to LOUT, ROUT */
246 {"Ext Spk", NULL
, "ROUT"},
247 {"Ext Spk", NULL
, "LOUT"},
249 /* mic is connected to MICIN (via right channel of headphone jack) */
250 {"MICIN", NULL
, "Mic Jack"},
252 /* Same as the above but no mic bias for line signals */
253 {"MICIN", NULL
, "Line Jack"},
256 static const char *jack_function
[] = {"Headphone", "Mic", "Line", "Headset",
258 static const char *spk_function
[] = {"On", "Off"};
259 static const struct soc_enum corgi_enum
[] = {
260 SOC_ENUM_SINGLE_EXT(5, jack_function
),
261 SOC_ENUM_SINGLE_EXT(2, spk_function
),
264 static const struct snd_kcontrol_new wm8731_corgi_controls
[] = {
265 SOC_ENUM_EXT("Jack Function", corgi_enum
[0], corgi_get_jack
,
267 SOC_ENUM_EXT("Speaker Function", corgi_enum
[1], corgi_get_spk
,
272 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
274 static int corgi_wm8731_init(struct snd_soc_pcm_runtime
*rtd
)
276 struct snd_soc_codec
*codec
= rtd
->codec
;
279 snd_soc_dapm_nc_pin(codec
, "LLINEIN");
280 snd_soc_dapm_nc_pin(codec
, "RLINEIN");
282 /* Add corgi specific controls */
283 err
= snd_soc_add_controls(codec
, wm8731_corgi_controls
,
284 ARRAY_SIZE(wm8731_corgi_controls
));
288 /* Add corgi specific widgets */
289 snd_soc_dapm_new_controls(codec
, wm8731_dapm_widgets
,
290 ARRAY_SIZE(wm8731_dapm_widgets
));
292 /* Set up corgi specific audio path audio_map */
293 snd_soc_dapm_add_routes(codec
, audio_map
, ARRAY_SIZE(audio_map
));
295 snd_soc_dapm_sync(codec
);
299 /* corgi digital audio interface glue - connects codec <--> CPU */
300 static struct snd_soc_dai_link corgi_dai
= {
302 .stream_name
= "WM8731",
303 .cpu_dai_name
= "pxa-is2-dai",
304 .codec_dai_name
= "wm8731-hifi",
305 .platform_name
= "pxa-pcm-audio",
306 .codec_name
= "wm8731-codec-0.001a",
307 .init
= corgi_wm8731_init
,
311 /* corgi audio machine driver */
312 static struct snd_soc_card snd_soc_corgi
= {
314 .dai_link
= &corgi_dai
,
318 static struct platform_device
*corgi_snd_device
;
320 static int __init
corgi_init(void)
324 if (!(machine_is_corgi() || machine_is_shepherd() ||
328 corgi_snd_device
= platform_device_alloc("soc-audio", -1);
329 if (!corgi_snd_device
)
332 platform_set_drvdata(corgi_snd_device
, &snd_soc_corgi
);
333 ret
= platform_device_add(corgi_snd_device
);
336 platform_device_put(corgi_snd_device
);
341 static void __exit
corgi_exit(void)
343 platform_device_unregister(corgi_snd_device
);
346 module_init(corgi_init
);
347 module_exit(corgi_exit
);
349 /* Module information */
350 MODULE_AUTHOR("Richard Purdie");
351 MODULE_DESCRIPTION("ALSA SoC Corgi");
352 MODULE_LICENSE("GPL");