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a1eb4b3c LG |
1 | /* |
2 | * corgi.c -- SoC audio for Corgi | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
5 | * Copyright 2005 Openedhand Ltd. | |
6 | * | |
d331124d | 7 | * Authors: Liam Girdwood <lrg@slimlogic.co.uk> |
a1eb4b3c LG |
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. | |
a1eb4b3c LG |
14 | */ |
15 | ||
16 | #include <linux/module.h> | |
17 | #include <linux/moduleparam.h> | |
18 | #include <linux/timer.h> | |
fc996757 | 19 | #include <linux/i2c.h> |
a1eb4b3c LG |
20 | #include <linux/interrupt.h> |
21 | #include <linux/platform_device.h> | |
6168cda9 | 22 | #include <linux/gpio.h> |
a1eb4b3c LG |
23 | #include <sound/core.h> |
24 | #include <sound/pcm.h> | |
25 | #include <sound/soc.h> | |
a1eb4b3c LG |
26 | |
27 | #include <asm/mach-types.h> | |
a09e64fb RK |
28 | #include <mach/corgi.h> |
29 | #include <mach/audio.h> | |
a1eb4b3c LG |
30 | |
31 | #include "../codecs/wm8731.h" | |
d928b25a | 32 | #include "pxa2xx-i2s.h" |
a1eb4b3c LG |
33 | |
34 | #define CORGI_HP 0 | |
35 | #define CORGI_MIC 1 | |
36 | #define CORGI_LINE 2 | |
37 | #define CORGI_HEADSET 3 | |
38 | #define CORGI_HP_OFF 4 | |
39 | #define CORGI_SPK_ON 0 | |
40 | #define CORGI_SPK_OFF 1 | |
41 | ||
42 | /* audio clock in Hz - rounded from 12.235MHz */ | |
43 | #define CORGI_AUDIO_CLOCK 12288000 | |
44 | ||
45 | static int corgi_jack_func; | |
46 | static int corgi_spk_func; | |
47 | ||
022658be | 48 | static void corgi_ext_control(struct snd_soc_dapm_context *dapm) |
a1eb4b3c | 49 | { |
4d9e7348 CK |
50 | snd_soc_dapm_mutex_lock(dapm); |
51 | ||
a1eb4b3c LG |
52 | /* set up jack connection */ |
53 | switch (corgi_jack_func) { | |
54 | case CORGI_HP: | |
a1eb4b3c | 55 | /* set = unmute headphone */ |
6168cda9 EM |
56 | gpio_set_value(CORGI_GPIO_MUTE_L, 1); |
57 | gpio_set_value(CORGI_GPIO_MUTE_R, 1); | |
4d9e7348 CK |
58 | snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); |
59 | snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); | |
60 | snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack"); | |
61 | snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); | |
a1eb4b3c LG |
62 | break; |
63 | case CORGI_MIC: | |
a1eb4b3c | 64 | /* reset = mute headphone */ |
6168cda9 EM |
65 | gpio_set_value(CORGI_GPIO_MUTE_L, 0); |
66 | gpio_set_value(CORGI_GPIO_MUTE_R, 0); | |
4d9e7348 CK |
67 | snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack"); |
68 | snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); | |
69 | snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); | |
70 | snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); | |
a1eb4b3c LG |
71 | break; |
72 | case CORGI_LINE: | |
6168cda9 EM |
73 | gpio_set_value(CORGI_GPIO_MUTE_L, 0); |
74 | gpio_set_value(CORGI_GPIO_MUTE_R, 0); | |
4d9e7348 CK |
75 | snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); |
76 | snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack"); | |
77 | snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); | |
78 | snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); | |
a1eb4b3c LG |
79 | break; |
80 | case CORGI_HEADSET: | |
6168cda9 EM |
81 | gpio_set_value(CORGI_GPIO_MUTE_L, 0); |
82 | gpio_set_value(CORGI_GPIO_MUTE_R, 1); | |
4d9e7348 CK |
83 | snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack"); |
84 | snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); | |
85 | snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); | |
86 | snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack"); | |
a1eb4b3c LG |
87 | break; |
88 | } | |
89 | ||
90 | if (corgi_spk_func == CORGI_SPK_ON) | |
4d9e7348 | 91 | snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk"); |
a5302181 | 92 | else |
4d9e7348 | 93 | snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk"); |
a1eb4b3c LG |
94 | |
95 | /* signal a DAPM event */ | |
4d9e7348 CK |
96 | snd_soc_dapm_sync_unlocked(dapm); |
97 | ||
98 | snd_soc_dapm_mutex_unlock(dapm); | |
a1eb4b3c LG |
99 | } |
100 | ||
101 | static int corgi_startup(struct snd_pcm_substream *substream) | |
102 | { | |
103 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
71a29560 | 104 | |
a1eb4b3c | 105 | /* check the jack status at stream startup */ |
e14de47a | 106 | corgi_ext_control(&rtd->card->dapm); |
71a29560 | 107 | |
a1eb4b3c LG |
108 | return 0; |
109 | } | |
110 | ||
111 | /* we need to unmute the HP at shutdown as the mute burns power on corgi */ | |
5220ed6b | 112 | static void corgi_shutdown(struct snd_pcm_substream *substream) |
a1eb4b3c | 113 | { |
a1eb4b3c | 114 | /* set = unmute headphone */ |
6168cda9 EM |
115 | gpio_set_value(CORGI_GPIO_MUTE_L, 1); |
116 | gpio_set_value(CORGI_GPIO_MUTE_R, 1); | |
a1eb4b3c LG |
117 | } |
118 | ||
d928b25a LG |
119 | static int corgi_hw_params(struct snd_pcm_substream *substream, |
120 | struct snd_pcm_hw_params *params) | |
121 | { | |
122 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad LG |
123 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
124 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
d928b25a LG |
125 | unsigned int clk = 0; |
126 | int ret = 0; | |
127 | ||
128 | switch (params_rate(params)) { | |
129 | case 8000: | |
130 | case 16000: | |
131 | case 48000: | |
132 | case 96000: | |
133 | clk = 12288000; | |
134 | break; | |
135 | case 11025: | |
136 | case 22050: | |
137 | case 44100: | |
138 | clk = 11289600; | |
139 | break; | |
140 | } | |
141 | ||
d928b25a | 142 | /* set the codec system clock for DAC and ADC */ |
9745e824 | 143 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, clk, |
d928b25a LG |
144 | SND_SOC_CLOCK_IN); |
145 | if (ret < 0) | |
146 | return ret; | |
147 | ||
148 | /* set the I2S system clock as input (unused) */ | |
64105cfd | 149 | ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0, |
d928b25a LG |
150 | SND_SOC_CLOCK_IN); |
151 | if (ret < 0) | |
152 | return ret; | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
943b7311 | 157 | static const struct snd_soc_ops corgi_ops = { |
a1eb4b3c | 158 | .startup = corgi_startup, |
d928b25a | 159 | .hw_params = corgi_hw_params, |
a1eb4b3c LG |
160 | .shutdown = corgi_shutdown, |
161 | }; | |
162 | ||
163 | static int corgi_get_jack(struct snd_kcontrol *kcontrol, | |
164 | struct snd_ctl_elem_value *ucontrol) | |
165 | { | |
1457ad0e | 166 | ucontrol->value.enumerated.item[0] = corgi_jack_func; |
a1eb4b3c LG |
167 | return 0; |
168 | } | |
169 | ||
170 | static int corgi_set_jack(struct snd_kcontrol *kcontrol, | |
171 | struct snd_ctl_elem_value *ucontrol) | |
172 | { | |
022658be | 173 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
a1eb4b3c | 174 | |
1457ad0e | 175 | if (corgi_jack_func == ucontrol->value.enumerated.item[0]) |
a1eb4b3c LG |
176 | return 0; |
177 | ||
1457ad0e | 178 | corgi_jack_func = ucontrol->value.enumerated.item[0]; |
022658be | 179 | corgi_ext_control(&card->dapm); |
a1eb4b3c LG |
180 | return 1; |
181 | } | |
182 | ||
183 | static int corgi_get_spk(struct snd_kcontrol *kcontrol, | |
184 | struct snd_ctl_elem_value *ucontrol) | |
185 | { | |
1457ad0e | 186 | ucontrol->value.enumerated.item[0] = corgi_spk_func; |
a1eb4b3c LG |
187 | return 0; |
188 | } | |
189 | ||
190 | static int corgi_set_spk(struct snd_kcontrol *kcontrol, | |
191 | struct snd_ctl_elem_value *ucontrol) | |
192 | { | |
022658be | 193 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
a1eb4b3c | 194 | |
1457ad0e | 195 | if (corgi_spk_func == ucontrol->value.enumerated.item[0]) |
a1eb4b3c LG |
196 | return 0; |
197 | ||
1457ad0e | 198 | corgi_spk_func = ucontrol->value.enumerated.item[0]; |
022658be | 199 | corgi_ext_control(&card->dapm); |
a1eb4b3c LG |
200 | return 1; |
201 | } | |
202 | ||
338c7ed0 JN |
203 | static int corgi_amp_event(struct snd_soc_dapm_widget *w, |
204 | struct snd_kcontrol *k, int event) | |
a1eb4b3c | 205 | { |
6168cda9 | 206 | gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event)); |
a1eb4b3c LG |
207 | return 0; |
208 | } | |
209 | ||
338c7ed0 JN |
210 | static int corgi_mic_event(struct snd_soc_dapm_widget *w, |
211 | struct snd_kcontrol *k, int event) | |
a1eb4b3c | 212 | { |
6168cda9 | 213 | gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event)); |
a1eb4b3c LG |
214 | return 0; |
215 | } | |
216 | ||
217 | /* corgi machine dapm widgets */ | |
218 | static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { | |
219 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
220 | SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event), | |
221 | SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event), | |
222 | SND_SOC_DAPM_LINE("Line Jack", NULL), | |
223 | SND_SOC_DAPM_HP("Headset Jack", NULL), | |
224 | }; | |
225 | ||
226 | /* Corgi machine audio map (connections to the codec pins) */ | |
32696af1 | 227 | static const struct snd_soc_dapm_route corgi_audio_map[] = { |
a1eb4b3c LG |
228 | |
229 | /* headset Jack - in = micin, out = LHPOUT*/ | |
230 | {"Headset Jack", NULL, "LHPOUT"}, | |
231 | ||
232 | /* headphone connected to LHPOUT1, RHPOUT1 */ | |
233 | {"Headphone Jack", NULL, "LHPOUT"}, | |
234 | {"Headphone Jack", NULL, "RHPOUT"}, | |
235 | ||
236 | /* speaker connected to LOUT, ROUT */ | |
237 | {"Ext Spk", NULL, "ROUT"}, | |
238 | {"Ext Spk", NULL, "LOUT"}, | |
239 | ||
240 | /* mic is connected to MICIN (via right channel of headphone jack) */ | |
241 | {"MICIN", NULL, "Mic Jack"}, | |
242 | ||
243 | /* Same as the above but no mic bias for line signals */ | |
244 | {"MICIN", NULL, "Line Jack"}, | |
a1eb4b3c LG |
245 | }; |
246 | ||
92be5810 LPC |
247 | static const char * const jack_function[] = {"Headphone", "Mic", "Line", |
248 | "Headset", "Off"}; | |
249 | static const char * const spk_function[] = {"On", "Off"}; | |
a1eb4b3c LG |
250 | static const struct soc_enum corgi_enum[] = { |
251 | SOC_ENUM_SINGLE_EXT(5, jack_function), | |
252 | SOC_ENUM_SINGLE_EXT(2, spk_function), | |
253 | }; | |
254 | ||
255 | static const struct snd_kcontrol_new wm8731_corgi_controls[] = { | |
256 | SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack, | |
257 | corgi_set_jack), | |
258 | SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk, | |
259 | corgi_set_spk), | |
260 | }; | |
261 | ||
a1eb4b3c LG |
262 | /* corgi digital audio interface glue - connects codec <--> CPU */ |
263 | static struct snd_soc_dai_link corgi_dai = { | |
264 | .name = "WM8731", | |
265 | .stream_name = "WM8731", | |
a3adfa00 | 266 | .cpu_dai_name = "pxa2xx-i2s", |
f0fba2ad LG |
267 | .codec_dai_name = "wm8731-hifi", |
268 | .platform_name = "pxa-pcm-audio", | |
99b59f3c | 269 | .codec_name = "wm8731.0-001b", |
74f4dd56 AL |
270 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
271 | SND_SOC_DAIFMT_CBS_CFS, | |
d928b25a | 272 | .ops = &corgi_ops, |
a1eb4b3c LG |
273 | }; |
274 | ||
275 | /* corgi audio machine driver */ | |
34be9244 | 276 | static struct snd_soc_card corgi = { |
a1eb4b3c | 277 | .name = "Corgi", |
561c6a17 | 278 | .owner = THIS_MODULE, |
a1eb4b3c LG |
279 | .dai_link = &corgi_dai, |
280 | .num_links = 1, | |
32696af1 AL |
281 | |
282 | .controls = wm8731_corgi_controls, | |
283 | .num_controls = ARRAY_SIZE(wm8731_corgi_controls), | |
284 | .dapm_widgets = wm8731_dapm_widgets, | |
285 | .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets), | |
286 | .dapm_routes = corgi_audio_map, | |
287 | .num_dapm_routes = ARRAY_SIZE(corgi_audio_map), | |
46d0d8df | 288 | .fully_routed = true, |
a1eb4b3c LG |
289 | }; |
290 | ||
570f6fe1 | 291 | static int corgi_probe(struct platform_device *pdev) |
a1eb4b3c | 292 | { |
34be9244 | 293 | struct snd_soc_card *card = &corgi; |
a1eb4b3c LG |
294 | int ret; |
295 | ||
34be9244 | 296 | card->dev = &pdev->dev; |
a1eb4b3c | 297 | |
2fd7076a | 298 | ret = devm_snd_soc_register_card(&pdev->dev, card); |
a1eb4b3c | 299 | if (ret) |
34be9244 AL |
300 | dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", |
301 | ret); | |
a1eb4b3c LG |
302 | return ret; |
303 | } | |
304 | ||
34be9244 AL |
305 | static struct platform_driver corgi_driver = { |
306 | .driver = { | |
307 | .name = "corgi-audio", | |
7db1698f | 308 | .pm = &snd_soc_pm_ops, |
34be9244 AL |
309 | }, |
310 | .probe = corgi_probe, | |
34be9244 AL |
311 | }; |
312 | ||
313 | module_platform_driver(corgi_driver); | |
a1eb4b3c LG |
314 | |
315 | /* Module information */ | |
316 | MODULE_AUTHOR("Richard Purdie"); | |
317 | MODULE_DESCRIPTION("ALSA SoC Corgi"); | |
318 | MODULE_LICENSE("GPL"); | |
34be9244 | 319 | MODULE_ALIAS("platform:corgi-audio"); |