4abb18a14b899abbc2c822f4f2cd6c4e8873d36b
[openwrt/svn-archive/archive.git] / target / linux / s3c24xx / files-2.6.30 / sound / soc / s3c24xx / gta02_wm8753.c
1 /*
2 * neo1973_gta02_wm8753.c -- SoC audio for Openmoko freerunner
3 *
4 * Copyright 2007 Openmoko Inc
5 * Author: Graeme Gregory <graeme@openmoko.org>
6 * Copyright 2007 Wolfson Microelectronics PLC.
7 * Author: Graeme Gregory <linux@wolfsonmicro.com>
8 * Copyright 2009 Wolfson Microelectronics
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 #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>
25
26 #include <asm/mach-types.h>
27
28 #include <plat/regs-iis.h>
29
30 #include <mach/regs-clock.h>
31 #include <mach/regs-gpio.h>
32 #include <mach/hardware.h>
33 #include <asm/io.h>
34 #include <mach/regs-gpioj.h>
35 #include <mach/gta02.h>
36 #include "../codecs/wm8753.h"
37 #include "s3c24xx-pcm.h"
38 #include "s3c24xx-i2s.h"
39
40 static struct snd_soc_card neo1973_gta02;
41
42 static int neo1973_gta02_hifi_hw_params(struct snd_pcm_substream *substream,
43 struct snd_pcm_hw_params *params)
44 {
45 struct snd_soc_pcm_runtime *rtd = substream->private_data;
46 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
47 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
48 unsigned int pll_out = 0, bclk = 0;
49 int ret = 0;
50 unsigned long iis_clkrate;
51
52 iis_clkrate = s3c24xx_i2s_get_clockrate();
53
54 switch (params_rate(params)) {
55 case 8000:
56 case 16000:
57 pll_out = 12288000;
58 break;
59 case 48000:
60 bclk = WM8753_BCLK_DIV_4;
61 pll_out = 12288000;
62 break;
63 case 96000:
64 bclk = WM8753_BCLK_DIV_2;
65 pll_out = 12288000;
66 break;
67 case 11025:
68 bclk = WM8753_BCLK_DIV_16;
69 pll_out = 11289600;
70 break;
71 case 22050:
72 bclk = WM8753_BCLK_DIV_8;
73 pll_out = 11289600;
74 break;
75 case 44100:
76 bclk = WM8753_BCLK_DIV_4;
77 pll_out = 11289600;
78 break;
79 case 88200:
80 bclk = WM8753_BCLK_DIV_2;
81 pll_out = 11289600;
82 break;
83 }
84
85 /* set codec DAI configuration */
86 ret = snd_soc_dai_set_fmt(codec_dai,
87 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
88 SND_SOC_DAIFMT_CBM_CFM);
89 if (ret < 0)
90 return ret;
91
92 /* set cpu DAI configuration */
93 ret = snd_soc_dai_set_fmt(cpu_dai,
94 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
95 SND_SOC_DAIFMT_CBM_CFM);
96 if (ret < 0)
97 return ret;
98
99 /* set the codec system clock for DAC and ADC */
100 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
101 SND_SOC_CLOCK_IN);
102 if (ret < 0)
103 return ret;
104
105 /* set MCLK division for sample rate */
106 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
107 S3C2410_IISMOD_32FS);
108 if (ret < 0)
109 return ret;
110
111 /* set codec BCLK division for sample rate */
112 ret = snd_soc_dai_set_clkdiv(codec_dai,
113 WM8753_BCLKDIV, bclk);
114 if (ret < 0)
115 return ret;
116
117 /* set prescaler division for sample rate */
118 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
119 S3C24XX_PRESCALE(4, 4));
120 if (ret < 0)
121 return ret;
122
123 /* codec PLL input is PCLK/4 */
124 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1,
125 iis_clkrate / 4, pll_out);
126 if (ret < 0)
127 return ret;
128
129 return 0;
130 }
131
132 static int neo1973_gta02_hifi_hw_free(struct snd_pcm_substream *substream)
133 {
134 struct snd_soc_pcm_runtime *rtd = substream->private_data;
135 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
136
137 /* disable the PLL */
138 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0);
139 }
140
141 /*
142 * Neo1973 WM8753 HiFi DAI opserations.
143 */
144 static struct snd_soc_ops neo1973_gta02_hifi_ops = {
145 .hw_params = neo1973_gta02_hifi_hw_params,
146 .hw_free = neo1973_gta02_hifi_hw_free,
147 };
148
149 static int neo1973_gta02_voice_hw_params(
150 struct snd_pcm_substream *substream,
151 struct snd_pcm_hw_params *params)
152 {
153 struct snd_soc_pcm_runtime *rtd = substream->private_data;
154 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
155 unsigned int pcmdiv = 0;
156 int ret = 0;
157 unsigned long iis_clkrate;
158
159 iis_clkrate = s3c24xx_i2s_get_clockrate();
160
161 if (params_rate(params) != 8000)
162 return -EINVAL;
163 if (params_channels(params) != 1)
164 return -EINVAL;
165
166 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
167
168 /* todo: gg check mode (DSP_B) against CSR datasheet */
169 /* set codec DAI configuration */
170 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
171 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
172 if (ret < 0)
173 return ret;
174
175 /* set the codec system clock for DAC and ADC */
176 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK,
177 12288000, SND_SOC_CLOCK_IN);
178 if (ret < 0)
179 return ret;
180
181 /* set codec PCM division for sample rate */
182 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV,
183 pcmdiv);
184 if (ret < 0)
185 return ret;
186
187 /* configue and enable PLL for 12.288MHz output */
188 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2,
189 iis_clkrate / 4, 12288000);
190 if (ret < 0)
191 return ret;
192
193 return 0;
194 }
195
196 static int neo1973_gta02_voice_hw_free(struct snd_pcm_substream *substream)
197 {
198 struct snd_soc_pcm_runtime *rtd = substream->private_data;
199 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
200
201 /* disable the PLL */
202 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0);
203 }
204
205 static struct snd_soc_ops neo1973_gta02_voice_ops = {
206 .hw_params = neo1973_gta02_voice_hw_params,
207 .hw_free = neo1973_gta02_voice_hw_free,
208 };
209
210 #define LM4853_AMP 1
211 #define LM4853_SPK 2
212
213 static u8 lm4853_state;
214
215 /* This has no effect, it exists only to maintain compatibility with
216 * existing ALSA state files.
217 */
218 static int lm4853_set_state(struct snd_kcontrol *kcontrol,
219 struct snd_ctl_elem_value *ucontrol)
220 {
221 int val = ucontrol->value.integer.value[0];
222
223 if (val)
224 lm4853_state |= LM4853_AMP;
225 else
226 lm4853_state &= ~LM4853_AMP;
227
228 return 0;
229 }
230
231 static int lm4853_get_state(struct snd_kcontrol *kcontrol,
232 struct snd_ctl_elem_value *ucontrol)
233 {
234 ucontrol->value.integer.value[0] = lm4853_state & LM4853_AMP;
235
236 return 0;
237 }
238
239 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
240 struct snd_ctl_elem_value *ucontrol)
241 {
242 int val = ucontrol->value.integer.value[0];
243
244 if (val) {
245 lm4853_state |= LM4853_SPK;
246 s3c2410_gpio_setpin(GTA02_GPIO_HP_IN, 0);
247 } else {
248 lm4853_state &= ~LM4853_SPK;
249 s3c2410_gpio_setpin(GTA02_GPIO_HP_IN, 1);
250 }
251
252 return 0;
253 }
254
255 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
256 struct snd_ctl_elem_value *ucontrol)
257 {
258 ucontrol->value.integer.value[0] = (lm4853_state & LM4853_SPK) >> 1;
259
260 return 0;
261 }
262
263 static int lm4853_event(struct snd_soc_dapm_widget *w,
264 struct snd_kcontrol *k,
265 int event)
266 {
267 if (SND_SOC_DAPM_EVENT_ON(event))
268 s3c2410_gpio_setpin(GTA02_GPIO_AMP_SHUT, 0);
269
270 if (SND_SOC_DAPM_EVENT_OFF(event))
271 s3c2410_gpio_setpin(GTA02_GPIO_AMP_SHUT, 1);
272
273 return 0;
274 }
275
276 static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
277 SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
278 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
279 SND_SOC_DAPM_LINE("GSM Line In", NULL),
280 SND_SOC_DAPM_MIC("Headset Mic", NULL),
281 SND_SOC_DAPM_MIC("Handset Mic", NULL),
282 SND_SOC_DAPM_SPK("Handset Spk", NULL),
283 };
284
285
286 /* example machine audio_mapnections */
287 static const struct snd_soc_dapm_route audio_map[] = {
288
289 /* Connections to the lm4853 amp */
290 {"Stereo Out", NULL, "LOUT1"},
291 {"Stereo Out", NULL, "ROUT1"},
292
293 /* Connections to the GSM Module */
294 {"GSM Line Out", NULL, "MONO1"},
295 {"GSM Line Out", NULL, "MONO2"},
296 {"RXP", NULL, "GSM Line In"},
297 {"RXN", NULL, "GSM Line In"},
298
299 /* Connections to Headset */
300 {"MIC1", NULL, "Mic Bias"},
301 {"Mic Bias", NULL, "Headset Mic"},
302
303 /* Call Mic */
304 {"MIC2", NULL, "Mic Bias"},
305 {"MIC2N", NULL, "Mic Bias"},
306 {"Mic Bias", NULL, "Handset Mic"},
307
308 /* Call Speaker */
309 {"Handset Spk", NULL, "LOUT2"},
310 {"Handset Spk", NULL, "ROUT2"},
311
312 /* Connect the ALC pins */
313 {"ACIN", NULL, "ACOP"},
314 };
315
316 static const struct snd_kcontrol_new wm8753_neo1973_gta02_controls[] = {
317 SOC_DAPM_PIN_SWITCH("Stereo Out"),
318 SOC_DAPM_PIN_SWITCH("GSM Line Out"),
319 SOC_DAPM_PIN_SWITCH("GSM Line In"),
320 SOC_DAPM_PIN_SWITCH("Headset Mic"),
321 SOC_DAPM_PIN_SWITCH("Handset Mic"),
322 SOC_DAPM_PIN_SWITCH("Handset Spk"),
323
324 /* This has no effect, it exists only to maintain compatibility with
325 * existing ALSA state files.
326 */
327 SOC_SINGLE_EXT("Amp State Switch", 6, 0, 1, 0,
328 lm4853_get_state,
329 lm4853_set_state),
330 SOC_SINGLE_EXT("Amp Spk Switch", 7, 0, 1, 0,
331 lm4853_get_spk,
332 lm4853_set_spk),
333 };
334
335 /*
336 * This is an example machine initialisation for a wm8753 connected to a
337 * neo1973 GTA02.
338 */
339 static int neo1973_gta02_wm8753_init(struct snd_soc_codec *codec)
340 {
341 int i, err;
342
343 /* set up NC codec pins */
344 snd_soc_dapm_nc_pin(codec, "OUT3");
345 snd_soc_dapm_nc_pin(codec, "OUT4");
346 snd_soc_dapm_nc_pin(codec, "LINE1");
347 snd_soc_dapm_nc_pin(codec, "LINE2");
348
349 /* Add neo1973 gta02 specific widgets */
350 snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
351 ARRAY_SIZE(wm8753_dapm_widgets));
352
353 /* add neo1973 gta02 specific controls */
354 for (i = 0; i < ARRAY_SIZE(wm8753_neo1973_gta02_controls); i++) {
355 err = snd_ctl_add(codec->card,
356 snd_soc_cnew(&wm8753_neo1973_gta02_controls[i],
357 codec, NULL));
358 if (err < 0)
359 return err;
360 }
361
362 /* set up neo1973 gta02 specific audio path audio_map */
363 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
364
365 /* set endpoints to default off mode */
366 snd_soc_dapm_disable_pin(codec, "Stereo Out");
367 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
368 snd_soc_dapm_disable_pin(codec, "GSM Line In");
369 snd_soc_dapm_disable_pin(codec, "Headset Mic");
370 snd_soc_dapm_disable_pin(codec, "Handset Mic");
371 snd_soc_dapm_disable_pin(codec, "Handset Spk");
372
373 snd_soc_dapm_sync(codec);
374
375 return 0;
376 }
377
378 /*
379 * BT Codec DAI
380 */
381 static struct snd_soc_dai bt_dai = {
382 .name = "Bluetooth",
383 .id = 0,
384 .playback = {
385 .channels_min = 1,
386 .channels_max = 1,
387 .rates = SNDRV_PCM_RATE_8000,
388 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
389 .capture = {
390 .channels_min = 1,
391 .channels_max = 1,
392 .rates = SNDRV_PCM_RATE_8000,
393 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
394 };
395
396 static struct snd_soc_dai_link neo1973_gta02_dai[] = {
397 { /* Hifi Playback - for similatious use with voice below */
398 .name = "WM8753",
399 .stream_name = "WM8753 HiFi",
400 .cpu_dai = &s3c24xx_i2s_dai,
401 .codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
402 .init = neo1973_gta02_wm8753_init,
403 .ops = &neo1973_gta02_hifi_ops,
404 },
405 { /* Voice via BT */
406 .name = "Bluetooth",
407 .stream_name = "Voice",
408 .cpu_dai = &bt_dai,
409 .codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
410 .ops = &neo1973_gta02_voice_ops,
411 },
412 };
413
414 static struct snd_soc_card neo1973_gta02 = {
415 .name = "neo1973-gta02",
416 .platform = &s3c24xx_soc_platform,
417 .dai_link = neo1973_gta02_dai,
418 .num_links = ARRAY_SIZE(neo1973_gta02_dai),
419 };
420
421 static struct snd_soc_device neo1973_gta02_snd_devdata = {
422 .card = &neo1973_gta02,
423 .codec_dev = &soc_codec_dev_wm8753,
424 };
425
426 static struct platform_device *neo1973_gta02_snd_device;
427
428 static int __init neo1973_gta02_init(void)
429 {
430 int ret;
431
432 if (!machine_is_neo1973_gta02()) {
433 printk(KERN_INFO
434 "Only GTA02 is supported by this ASoC driver\n");
435 return -ENODEV;
436 }
437
438 /* register bluetooth DAI here */
439 ret = snd_soc_register_dai(&bt_dai);
440 if (ret)
441 return ret;
442
443 neo1973_gta02_snd_device = platform_device_alloc("soc-audio", -1);
444 if (!neo1973_gta02_snd_device)
445 return -ENOMEM;
446
447 platform_set_drvdata(neo1973_gta02_snd_device,
448 &neo1973_gta02_snd_devdata);
449 neo1973_gta02_snd_devdata.dev = &neo1973_gta02_snd_device->dev;
450 ret = platform_device_add(neo1973_gta02_snd_device);
451
452 if (ret) {
453 platform_device_put(neo1973_gta02_snd_device);
454 return ret;
455 }
456
457 /* Initialise GPIOs used by amp */
458 s3c2410_gpio_cfgpin(GTA02_GPIO_HP_IN, S3C2410_GPIO_OUTPUT);
459 s3c2410_gpio_cfgpin(GTA02_GPIO_AMP_SHUT, S3C2410_GPIO_OUTPUT);
460
461 /* Amp off by default */
462 s3c2410_gpio_setpin(GTA02_GPIO_AMP_SHUT, 1);
463
464 /* Speaker off by default */
465 s3c2410_gpio_setpin(GTA02_GPIO_HP_IN, 1);
466
467 return ret;
468 }
469 module_init(neo1973_gta02_init);
470
471 static void __exit neo1973_gta02_exit(void)
472 {
473 snd_soc_unregister_dai(&bt_dai);
474 platform_device_unregister(neo1973_gta02_snd_device);
475 }
476 module_exit(neo1973_gta02_exit);
477
478 /* Module information */
479 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org");
480 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 GTA02");
481 MODULE_LICENSE("GPL");