2 * corgi.c -- SoC audio for Corgi
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
7 * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
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 <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/soc.h>
24 #include <sound/soc-dapm.h>
26 #include <asm/mach-types.h>
27 #include <asm/hardware/scoop.h>
28 #include <asm/arch/pxa-regs.h>
29 #include <asm/arch/hardware.h>
30 #include <asm/arch/corgi.h>
31 #include <asm/arch/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 set_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_MUTE_L
);
58 set_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_MUTE_R
);
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 reset_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_MUTE_L
);
67 reset_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_MUTE_R
);
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 reset_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_MUTE_L
);
75 reset_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_MUTE_R
);
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 reset_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_MUTE_L
);
83 set_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_MUTE_R
);
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 int corgi_shutdown(struct snd_pcm_substream
*substream
)
113 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
114 struct snd_soc_codec
*codec
= rtd
->socdev
->codec
;
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
);
122 static int corgi_hw_params(struct snd_pcm_substream
*substream
,
123 struct snd_pcm_hw_params
*params
)
125 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
126 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
127 struct snd_soc_dai
*cpu_dai
= rtd
->dai
->cpu_dai
;
128 unsigned int clk
= 0;
131 switch (params_rate(params
)) {
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
);
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
);
157 /* set the codec system clock for DAC and ADC */
158 ret
= codec_dai
->dai_ops
.set_sysclk(codec_dai
, WM8731_SYSCLK
, clk
,
163 /* set the I2S system clock as input (unused) */
164 ret
= cpu_dai
->dai_ops
.set_sysclk(cpu_dai
, PXA2XX_I2S_SYSCLK
, 0,
172 static struct snd_soc_ops corgi_ops
= {
173 .startup
= corgi_startup
,
174 .hw_params
= corgi_hw_params
,
175 .shutdown
= corgi_shutdown
,
178 static int corgi_get_jack(struct snd_kcontrol
*kcontrol
,
179 struct snd_ctl_elem_value
*ucontrol
)
181 ucontrol
->value
.integer
.value
[0] = corgi_jack_func
;
185 static int corgi_set_jack(struct snd_kcontrol
*kcontrol
,
186 struct snd_ctl_elem_value
*ucontrol
)
188 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
190 if (corgi_jack_func
== ucontrol
->value
.integer
.value
[0])
193 corgi_jack_func
= ucontrol
->value
.integer
.value
[0];
194 corgi_ext_control(codec
);
198 static int corgi_get_spk(struct snd_kcontrol
*kcontrol
,
199 struct snd_ctl_elem_value
*ucontrol
)
201 ucontrol
->value
.integer
.value
[0] = corgi_spk_func
;
205 static int corgi_set_spk(struct snd_kcontrol
*kcontrol
,
206 struct snd_ctl_elem_value
*ucontrol
)
208 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
210 if (corgi_spk_func
== ucontrol
->value
.integer
.value
[0])
213 corgi_spk_func
= ucontrol
->value
.integer
.value
[0];
214 corgi_ext_control(codec
);
218 static int corgi_amp_event(struct snd_soc_dapm_widget
*w
,
219 struct snd_kcontrol
*k
, int event
)
221 if (SND_SOC_DAPM_EVENT_ON(event
))
222 set_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_APM_ON
);
224 reset_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_APM_ON
);
229 static int corgi_mic_event(struct snd_soc_dapm_widget
*w
,
230 struct snd_kcontrol
*k
, int event
)
232 if (SND_SOC_DAPM_EVENT_ON(event
))
233 set_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_MIC_BIAS
);
235 reset_scoop_gpio(&corgiscoop_device
.dev
, CORGI_SCP_MIC_BIAS
);
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
),
249 /* Corgi machine audio map (connections to the codec pins) */
250 static const struct snd_soc_dapm_route audio_map
[] = {
252 /* headset Jack - in = micin, out = LHPOUT*/
253 {"Headset Jack", NULL
, "LHPOUT"},
255 /* headphone connected to LHPOUT1, RHPOUT1 */
256 {"Headphone Jack", NULL
, "LHPOUT"},
257 {"Headphone Jack", NULL
, "RHPOUT"},
259 /* speaker connected to LOUT, ROUT */
260 {"Ext Spk", NULL
, "ROUT"},
261 {"Ext Spk", NULL
, "LOUT"},
263 /* mic is connected to MICIN (via right channel of headphone jack) */
264 {"MICIN", NULL
, "Mic Jack"},
266 /* Same as the above but no mic bias for line signals */
267 {"MICIN", NULL
, "Line Jack"},
270 static const char *jack_function
[] = {"Headphone", "Mic", "Line", "Headset",
272 static const char *spk_function
[] = {"On", "Off"};
273 static const struct soc_enum corgi_enum
[] = {
274 SOC_ENUM_SINGLE_EXT(5, jack_function
),
275 SOC_ENUM_SINGLE_EXT(2, spk_function
),
278 static const struct snd_kcontrol_new wm8731_corgi_controls
[] = {
279 SOC_ENUM_EXT("Jack Function", corgi_enum
[0], corgi_get_jack
,
281 SOC_ENUM_EXT("Speaker Function", corgi_enum
[1], corgi_get_spk
,
286 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
288 static int corgi_wm8731_init(struct snd_soc_codec
*codec
)
292 snd_soc_dapm_disable_pin(codec
, "LLINEIN");
293 snd_soc_dapm_disable_pin(codec
, "RLINEIN");
295 /* Add corgi specific controls */
296 for (i
= 0; i
< ARRAY_SIZE(wm8731_corgi_controls
); i
++) {
297 err
= snd_ctl_add(codec
->card
,
298 snd_soc_cnew(&wm8731_corgi_controls
[i
], codec
, NULL
));
303 /* Add corgi specific widgets */
304 snd_soc_dapm_new_controls(codec
, wm8731_dapm_widgets
,
305 ARRAY_SIZE(wm8731_dapm_widgets
));
307 /* Set up corgi specific audio path audio_map */
308 snd_soc_dapm_add_routes(codec
, audio_map
, ARRAY_SIZE(audio_map
));
310 snd_soc_dapm_sync(codec
);
314 /* corgi digital audio interface glue - connects codec <--> CPU */
315 static struct snd_soc_dai_link corgi_dai
= {
317 .stream_name
= "WM8731",
318 .cpu_dai
= &pxa_i2s_dai
,
319 .codec_dai
= &wm8731_dai
,
320 .init
= corgi_wm8731_init
,
324 /* corgi audio machine driver */
325 static struct snd_soc_machine snd_soc_machine_corgi
= {
327 .dai_link
= &corgi_dai
,
331 /* corgi audio private data */
332 static struct wm8731_setup_data corgi_wm8731_setup
= {
336 /* corgi audio subsystem */
337 static struct snd_soc_device corgi_snd_devdata
= {
338 .machine
= &snd_soc_machine_corgi
,
339 .platform
= &pxa2xx_soc_platform
,
340 .codec_dev
= &soc_codec_dev_wm8731
,
341 .codec_data
= &corgi_wm8731_setup
,
344 static struct platform_device
*corgi_snd_device
;
346 static int __init
corgi_init(void)
350 if (!(machine_is_corgi() || machine_is_shepherd() ||
354 corgi_snd_device
= platform_device_alloc("soc-audio", -1);
355 if (!corgi_snd_device
)
358 platform_set_drvdata(corgi_snd_device
, &corgi_snd_devdata
);
359 corgi_snd_devdata
.dev
= &corgi_snd_device
->dev
;
360 ret
= platform_device_add(corgi_snd_device
);
363 platform_device_put(corgi_snd_device
);
368 static void __exit
corgi_exit(void)
370 platform_device_unregister(corgi_snd_device
);
373 module_init(corgi_init
);
374 module_exit(corgi_exit
);
376 /* Module information */
377 MODULE_AUTHOR("Richard Purdie");
378 MODULE_DESCRIPTION("ALSA SoC Corgi");
379 MODULE_LICENSE("GPL");