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2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
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2/*
3 * corgi.c -- SoC audio for Corgi
4 *
5 * Copyright 2005 Wolfson Microelectronics PLC.
6 * Copyright 2005 Openedhand Ltd.
7 *
d331124d 8 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
a1eb4b3c 9 * Richard Purdie <richard@openedhand.com>
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10 */
11
12#include <linux/module.h>
13#include <linux/moduleparam.h>
14#include <linux/timer.h>
fc996757 15#include <linux/i2c.h>
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16#include <linux/interrupt.h>
17#include <linux/platform_device.h>
6168cda9 18#include <linux/gpio.h>
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19#include <sound/core.h>
20#include <sound/pcm.h>
21#include <sound/soc.h>
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22
23#include <asm/mach-types.h>
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24#include <mach/corgi.h>
25#include <mach/audio.h>
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26
27#include "../codecs/wm8731.h"
d928b25a 28#include "pxa2xx-i2s.h"
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29
30#define CORGI_HP 0
31#define CORGI_MIC 1
32#define CORGI_LINE 2
33#define CORGI_HEADSET 3
34#define CORGI_HP_OFF 4
35#define CORGI_SPK_ON 0
36#define CORGI_SPK_OFF 1
37
38 /* audio clock in Hz - rounded from 12.235MHz */
39#define CORGI_AUDIO_CLOCK 12288000
40
41static int corgi_jack_func;
42static int corgi_spk_func;
43
022658be 44static void corgi_ext_control(struct snd_soc_dapm_context *dapm)
a1eb4b3c 45{
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46 snd_soc_dapm_mutex_lock(dapm);
47
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48 /* set up jack connection */
49 switch (corgi_jack_func) {
50 case CORGI_HP:
a1eb4b3c 51 /* set = unmute headphone */
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52 gpio_set_value(CORGI_GPIO_MUTE_L, 1);
53 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
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54 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
55 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
56 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
57 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
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58 break;
59 case CORGI_MIC:
a1eb4b3c 60 /* reset = mute headphone */
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61 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
62 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
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63 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
64 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
65 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
66 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
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67 break;
68 case CORGI_LINE:
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69 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
70 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
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71 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
72 snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");
73 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
74 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
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75 break;
76 case CORGI_HEADSET:
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77 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
78 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
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79 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
80 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
81 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
82 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
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83 break;
84 }
85
86 if (corgi_spk_func == CORGI_SPK_ON)
4d9e7348 87 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
a5302181 88 else
4d9e7348 89 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
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90
91 /* signal a DAPM event */
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92 snd_soc_dapm_sync_unlocked(dapm);
93
94 snd_soc_dapm_mutex_unlock(dapm);
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95}
96
97static int corgi_startup(struct snd_pcm_substream *substream)
98{
99 struct snd_soc_pcm_runtime *rtd = substream->private_data;
71a29560 100
a1eb4b3c 101 /* check the jack status at stream startup */
e14de47a 102 corgi_ext_control(&rtd->card->dapm);
71a29560 103
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104 return 0;
105}
106
107/* we need to unmute the HP at shutdown as the mute burns power on corgi */
5220ed6b 108static void corgi_shutdown(struct snd_pcm_substream *substream)
a1eb4b3c 109{
a1eb4b3c 110 /* set = unmute headphone */
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111 gpio_set_value(CORGI_GPIO_MUTE_L, 1);
112 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
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113}
114
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115static int corgi_hw_params(struct snd_pcm_substream *substream,
116 struct snd_pcm_hw_params *params)
117{
118 struct snd_soc_pcm_runtime *rtd = substream->private_data;
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119 struct snd_soc_dai *codec_dai = rtd->codec_dai;
120 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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121 unsigned int clk = 0;
122 int ret = 0;
123
124 switch (params_rate(params)) {
125 case 8000:
126 case 16000:
127 case 48000:
128 case 96000:
129 clk = 12288000;
130 break;
131 case 11025:
132 case 22050:
133 case 44100:
134 clk = 11289600;
135 break;
136 }
137
d928b25a 138 /* set the codec system clock for DAC and ADC */
9745e824 139 ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, clk,
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140 SND_SOC_CLOCK_IN);
141 if (ret < 0)
142 return ret;
143
144 /* set the I2S system clock as input (unused) */
64105cfd 145 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
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146 SND_SOC_CLOCK_IN);
147 if (ret < 0)
148 return ret;
149
150 return 0;
151}
152
943b7311 153static const struct snd_soc_ops corgi_ops = {
a1eb4b3c 154 .startup = corgi_startup,
d928b25a 155 .hw_params = corgi_hw_params,
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156 .shutdown = corgi_shutdown,
157};
158
159static int corgi_get_jack(struct snd_kcontrol *kcontrol,
160 struct snd_ctl_elem_value *ucontrol)
161{
1457ad0e 162 ucontrol->value.enumerated.item[0] = corgi_jack_func;
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163 return 0;
164}
165
166static int corgi_set_jack(struct snd_kcontrol *kcontrol,
167 struct snd_ctl_elem_value *ucontrol)
168{
022658be 169 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
a1eb4b3c 170
1457ad0e 171 if (corgi_jack_func == ucontrol->value.enumerated.item[0])
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172 return 0;
173
1457ad0e 174 corgi_jack_func = ucontrol->value.enumerated.item[0];
022658be 175 corgi_ext_control(&card->dapm);
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176 return 1;
177}
178
179static int corgi_get_spk(struct snd_kcontrol *kcontrol,
180 struct snd_ctl_elem_value *ucontrol)
181{
1457ad0e 182 ucontrol->value.enumerated.item[0] = corgi_spk_func;
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183 return 0;
184}
185
186static int corgi_set_spk(struct snd_kcontrol *kcontrol,
187 struct snd_ctl_elem_value *ucontrol)
188{
022658be 189 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
a1eb4b3c 190
1457ad0e 191 if (corgi_spk_func == ucontrol->value.enumerated.item[0])
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192 return 0;
193
1457ad0e 194 corgi_spk_func = ucontrol->value.enumerated.item[0];
022658be 195 corgi_ext_control(&card->dapm);
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196 return 1;
197}
198
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199static int corgi_amp_event(struct snd_soc_dapm_widget *w,
200 struct snd_kcontrol *k, int event)
a1eb4b3c 201{
6168cda9 202 gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event));
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203 return 0;
204}
205
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206static int corgi_mic_event(struct snd_soc_dapm_widget *w,
207 struct snd_kcontrol *k, int event)
a1eb4b3c 208{
6168cda9 209 gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event));
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210 return 0;
211}
212
213/* corgi machine dapm widgets */
214static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
215SND_SOC_DAPM_HP("Headphone Jack", NULL),
216SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
217SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
218SND_SOC_DAPM_LINE("Line Jack", NULL),
219SND_SOC_DAPM_HP("Headset Jack", NULL),
220};
221
222/* Corgi machine audio map (connections to the codec pins) */
32696af1 223static const struct snd_soc_dapm_route corgi_audio_map[] = {
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224
225 /* headset Jack - in = micin, out = LHPOUT*/
226 {"Headset Jack", NULL, "LHPOUT"},
227
228 /* headphone connected to LHPOUT1, RHPOUT1 */
229 {"Headphone Jack", NULL, "LHPOUT"},
230 {"Headphone Jack", NULL, "RHPOUT"},
231
232 /* speaker connected to LOUT, ROUT */
233 {"Ext Spk", NULL, "ROUT"},
234 {"Ext Spk", NULL, "LOUT"},
235
236 /* mic is connected to MICIN (via right channel of headphone jack) */
237 {"MICIN", NULL, "Mic Jack"},
238
239 /* Same as the above but no mic bias for line signals */
240 {"MICIN", NULL, "Line Jack"},
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241};
242
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243static const char * const jack_function[] = {"Headphone", "Mic", "Line",
244 "Headset", "Off"};
245static const char * const spk_function[] = {"On", "Off"};
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246static const struct soc_enum corgi_enum[] = {
247 SOC_ENUM_SINGLE_EXT(5, jack_function),
248 SOC_ENUM_SINGLE_EXT(2, spk_function),
249};
250
251static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
252 SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
253 corgi_set_jack),
254 SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
255 corgi_set_spk),
256};
257
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258/* corgi digital audio interface glue - connects codec <--> CPU */
259static struct snd_soc_dai_link corgi_dai = {
260 .name = "WM8731",
261 .stream_name = "WM8731",
a3adfa00 262 .cpu_dai_name = "pxa2xx-i2s",
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263 .codec_dai_name = "wm8731-hifi",
264 .platform_name = "pxa-pcm-audio",
99b59f3c 265 .codec_name = "wm8731.0-001b",
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266 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
267 SND_SOC_DAIFMT_CBS_CFS,
d928b25a 268 .ops = &corgi_ops,
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269};
270
271/* corgi audio machine driver */
34be9244 272static struct snd_soc_card corgi = {
a1eb4b3c 273 .name = "Corgi",
561c6a17 274 .owner = THIS_MODULE,
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275 .dai_link = &corgi_dai,
276 .num_links = 1,
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277
278 .controls = wm8731_corgi_controls,
279 .num_controls = ARRAY_SIZE(wm8731_corgi_controls),
280 .dapm_widgets = wm8731_dapm_widgets,
281 .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
282 .dapm_routes = corgi_audio_map,
283 .num_dapm_routes = ARRAY_SIZE(corgi_audio_map),
46d0d8df 284 .fully_routed = true,
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285};
286
570f6fe1 287static int corgi_probe(struct platform_device *pdev)
a1eb4b3c 288{
34be9244 289 struct snd_soc_card *card = &corgi;
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290 int ret;
291
34be9244 292 card->dev = &pdev->dev;
a1eb4b3c 293
2fd7076a 294 ret = devm_snd_soc_register_card(&pdev->dev, card);
a1eb4b3c 295 if (ret)
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296 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
297 ret);
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298 return ret;
299}
300
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301static struct platform_driver corgi_driver = {
302 .driver = {
303 .name = "corgi-audio",
7db1698f 304 .pm = &snd_soc_pm_ops,
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305 },
306 .probe = corgi_probe,
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307};
308
309module_platform_driver(corgi_driver);
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310
311/* Module information */
312MODULE_AUTHOR("Richard Purdie");
313MODULE_DESCRIPTION("ALSA SoC Corgi");
314MODULE_LICENSE("GPL");
34be9244 315MODULE_ALIAS("platform:corgi-audio");