ALSA: asoc: core - add Digital Audio Interface (DAI) control functions.
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / soc / pxa / poodle.c
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1/*
2 * poodle.c -- SoC audio for Poodle
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 *
7 * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
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.
14 *
15 */
16
17#include <linux/module.h>
18#include <linux/moduleparam.h>
19#include <linux/timer.h>
20#include <linux/interrupt.h>
21#include <linux/platform_device.h>
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22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/soc.h>
25#include <sound/soc-dapm.h>
26
27#include <asm/mach-types.h>
28#include <asm/hardware/locomo.h>
29#include <asm/arch/pxa-regs.h>
30#include <asm/arch/hardware.h>
31#include <asm/arch/poodle.h>
32#include <asm/arch/audio.h>
33
34#include "../codecs/wm8731.h"
35#include "pxa2xx-pcm.h"
73f40dc1 36#include "pxa2xx-i2s.h"
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37
38#define POODLE_HP 1
39#define POODLE_HP_OFF 0
40#define POODLE_SPK_ON 1
41#define POODLE_SPK_OFF 0
42
43 /* audio clock in Hz - rounded from 12.235MHz */
44#define POODLE_AUDIO_CLOCK 12288000
45
46static int poodle_jack_func;
47static int poodle_spk_func;
48
49static void poodle_ext_control(struct snd_soc_codec *codec)
50{
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51 /* set up jack connection */
52 if (poodle_jack_func == POODLE_HP) {
53 /* set = unmute headphone */
54 locomo_gpio_write(&poodle_locomo_device.dev,
55 POODLE_LOCOMO_GPIO_MUTE_L, 1);
56 locomo_gpio_write(&poodle_locomo_device.dev,
57 POODLE_LOCOMO_GPIO_MUTE_R, 1);
a5302181 58 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
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59 } else {
60 locomo_gpio_write(&poodle_locomo_device.dev,
61 POODLE_LOCOMO_GPIO_MUTE_L, 0);
62 locomo_gpio_write(&poodle_locomo_device.dev,
63 POODLE_LOCOMO_GPIO_MUTE_R, 0);
a5302181 64 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
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65 }
66
6e24dd93 67 /* set the enpoints to their new connetion states */
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68 if (poodle_spk_func == POODLE_SPK_ON)
69 snd_soc_dapm_enable_pin(codec, "Ext Spk");
70 else
71 snd_soc_dapm_disable_pin(codec, "Ext Spk");
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72
73 /* signal a DAPM event */
a5302181 74 snd_soc_dapm_sync(codec);
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75}
76
77static int poodle_startup(struct snd_pcm_substream *substream)
78{
79 struct snd_soc_pcm_runtime *rtd = substream->private_data;
80 struct snd_soc_codec *codec = rtd->socdev->codec;
81
82 /* check the jack status at stream startup */
83 poodle_ext_control(codec);
84 return 0;
85}
86
87/* we need to unmute the HP at shutdown as the mute burns power on poodle */
88static int poodle_shutdown(struct snd_pcm_substream *substream)
89{
90 struct snd_soc_pcm_runtime *rtd = substream->private_data;
91 struct snd_soc_codec *codec = rtd->socdev->codec;
92
93 /* set = unmute headphone */
94 locomo_gpio_write(&poodle_locomo_device.dev,
95 POODLE_LOCOMO_GPIO_MUTE_L, 1);
96 locomo_gpio_write(&poodle_locomo_device.dev,
97 POODLE_LOCOMO_GPIO_MUTE_R, 1);
98 return 0;
99}
100
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101static int poodle_hw_params(struct snd_pcm_substream *substream,
102 struct snd_pcm_hw_params *params)
103{
104 struct snd_soc_pcm_runtime *rtd = substream->private_data;
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105 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
106 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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107 unsigned int clk = 0;
108 int ret = 0;
109
110 switch (params_rate(params)) {
111 case 8000:
112 case 16000:
113 case 48000:
114 case 96000:
115 clk = 12288000;
116 break;
117 case 11025:
118 case 22050:
119 case 44100:
120 clk = 11289600;
121 break;
122 }
123
124 /* set codec DAI configuration */
125 ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
126 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
127 if (ret < 0)
128 return ret;
129
130 /* set cpu DAI configuration */
131 ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
132 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
133 if (ret < 0)
134 return ret;
135
136 /* set the codec system clock for DAC and ADC */
137 ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8731_SYSCLK, clk,
138 SND_SOC_CLOCK_IN);
139 if (ret < 0)
140 return ret;
141
142 /* set the I2S system clock as input (unused) */
143 ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
144 SND_SOC_CLOCK_IN);
145 if (ret < 0)
146 return ret;
147
148 return 0;
149}
150
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151static struct snd_soc_ops poodle_ops = {
152 .startup = poodle_startup,
73f40dc1 153 .hw_params = poodle_hw_params,
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154 .shutdown = poodle_shutdown,
155};
156
157static int poodle_get_jack(struct snd_kcontrol *kcontrol,
158 struct snd_ctl_elem_value *ucontrol)
159{
160 ucontrol->value.integer.value[0] = poodle_jack_func;
161 return 0;
162}
163
164static int poodle_set_jack(struct snd_kcontrol *kcontrol,
165 struct snd_ctl_elem_value *ucontrol)
166{
167 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
168
169 if (poodle_jack_func == ucontrol->value.integer.value[0])
170 return 0;
171
172 poodle_jack_func = ucontrol->value.integer.value[0];
173 poodle_ext_control(codec);
174 return 1;
175}
176
177static int poodle_get_spk(struct snd_kcontrol *kcontrol,
178 struct snd_ctl_elem_value *ucontrol)
179{
180 ucontrol->value.integer.value[0] = poodle_spk_func;
181 return 0;
182}
183
184static int poodle_set_spk(struct snd_kcontrol *kcontrol,
185 struct snd_ctl_elem_value *ucontrol)
186{
187 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
188
189 if (poodle_spk_func == ucontrol->value.integer.value[0])
190 return 0;
191
192 poodle_spk_func = ucontrol->value.integer.value[0];
193 poodle_ext_control(codec);
194 return 1;
195}
196
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197static int poodle_amp_event(struct snd_soc_dapm_widget *w,
198 struct snd_kcontrol *k, int event)
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199{
200 if (SND_SOC_DAPM_EVENT_ON(event))
201 locomo_gpio_write(&poodle_locomo_device.dev,
202 POODLE_LOCOMO_GPIO_AMP_ON, 0);
203 else
204 locomo_gpio_write(&poodle_locomo_device.dev,
205 POODLE_LOCOMO_GPIO_AMP_ON, 1);
206
207 return 0;
208}
209
210/* poodle machine dapm widgets */
211static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
212SND_SOC_DAPM_HP("Headphone Jack", NULL),
213SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
214};
215
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216/* Corgi machine connections to the codec pins */
217static const struct snd_soc_dapm_route audio_map[] = {
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218
219 /* headphone connected to LHPOUT1, RHPOUT1 */
220 {"Headphone Jack", NULL, "LHPOUT"},
221 {"Headphone Jack", NULL, "RHPOUT"},
222
223 /* speaker connected to LOUT, ROUT */
224 {"Ext Spk", NULL, "ROUT"},
225 {"Ext Spk", NULL, "LOUT"},
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226};
227
228static const char *jack_function[] = {"Off", "Headphone"};
229static const char *spk_function[] = {"Off", "On"};
230static const struct soc_enum poodle_enum[] = {
231 SOC_ENUM_SINGLE_EXT(2, jack_function),
232 SOC_ENUM_SINGLE_EXT(2, spk_function),
233};
234
235static const snd_kcontrol_new_t wm8731_poodle_controls[] = {
236 SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
237 poodle_set_jack),
238 SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
239 poodle_set_spk),
240};
241
242/*
243 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
244 */
245static int poodle_wm8731_init(struct snd_soc_codec *codec)
246{
247 int i, err;
248
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249 snd_soc_dapm_disable_pin(codec, "LLINEIN");
250 snd_soc_dapm_disable_pin(codec, "RLINEIN");
251 snd_soc_dapm_enable_pin(codec, "MICIN");
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252
253 /* Add poodle specific controls */
254 for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) {
255 err = snd_ctl_add(codec->card,
29e36e49 256 snd_soc_cnew(&wm8731_poodle_controls[i], codec, NULL));
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257 if (err < 0)
258 return err;
259 }
260
261 /* Add poodle specific widgets */
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262 snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
263 ARRAY_SIZE(wm8731_dapm_widgets));
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264
265 /* Set up poodle specific audio path audio_map */
25191c45 266 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
6e24dd93 267
a5302181 268 snd_soc_dapm_sync(codec);
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269 return 0;
270}
271
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272/* poodle digital audio interface glue - connects codec <--> CPU */
273static struct snd_soc_dai_link poodle_dai = {
274 .name = "WM8731",
275 .stream_name = "WM8731",
276 .cpu_dai = &pxa_i2s_dai,
277 .codec_dai = &wm8731_dai,
278 .init = poodle_wm8731_init,
73f40dc1 279 .ops = &poodle_ops,
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280};
281
282/* poodle audio machine driver */
283static struct snd_soc_machine snd_soc_machine_poodle = {
284 .name = "Poodle",
285 .dai_link = &poodle_dai,
286 .num_links = 1,
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287};
288
289/* poodle audio private data */
290static struct wm8731_setup_data poodle_wm8731_setup = {
291 .i2c_address = 0x1b,
292};
293
294/* poodle audio subsystem */
295static struct snd_soc_device poodle_snd_devdata = {
296 .machine = &snd_soc_machine_poodle,
297 .platform = &pxa2xx_soc_platform,
298 .codec_dev = &soc_codec_dev_wm8731,
299 .codec_data = &poodle_wm8731_setup,
300};
301
302static struct platform_device *poodle_snd_device;
303
304static int __init poodle_init(void)
305{
306 int ret;
307
308 if (!machine_is_poodle())
309 return -ENODEV;
310
311 locomo_gpio_set_dir(&poodle_locomo_device.dev,
312 POODLE_LOCOMO_GPIO_AMP_ON, 0);
313 /* should we mute HP at startup - burning power ?*/
314 locomo_gpio_set_dir(&poodle_locomo_device.dev,
315 POODLE_LOCOMO_GPIO_MUTE_L, 0);
316 locomo_gpio_set_dir(&poodle_locomo_device.dev,
317 POODLE_LOCOMO_GPIO_MUTE_R, 0);
318
319 poodle_snd_device = platform_device_alloc("soc-audio", -1);
320 if (!poodle_snd_device)
321 return -ENOMEM;
322
323 platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata);
324 poodle_snd_devdata.dev = &poodle_snd_device->dev;
325 ret = platform_device_add(poodle_snd_device);
326
327 if (ret)
328 platform_device_put(poodle_snd_device);
329
330 return ret;
331}
332
333static void __exit poodle_exit(void)
334{
335 platform_device_unregister(poodle_snd_device);
336}
337
338module_init(poodle_init);
339module_exit(poodle_exit);
340
341/* Module information */
342MODULE_AUTHOR("Richard Purdie");
343MODULE_DESCRIPTION("ALSA SoC Poodle");
344MODULE_LICENSE("GPL");