5f9ea7e42487c4804b0a990f41c3ee04d3dd1885
[openwrt/openwrt.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 <linux/gpio.h>
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
29 #include <plat/regs-iis.h>
30
31 #include <mach/regs-clock.h>
32 #include <asm/io.h>
33 #include <mach/regs-gpioj.h>
34 #include <mach/gta02.h>
35 #include "../codecs/wm8753.h"
36 #include "s3c24xx-pcm.h"
37 #include "s3c24xx-i2s.h"
38
39 static struct snd_soc_card neo1973_gta02;
40
41 static int neo1973_gta02_hifi_hw_params(struct snd_pcm_substream *substream,
42 struct snd_pcm_hw_params *params)
43 {
44 struct snd_soc_pcm_runtime *rtd = substream->private_data;
45 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
46 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
47 unsigned int pll_out = 0, bclk = 0;
48 int ret = 0;
49 unsigned long iis_clkrate;
50
51 iis_clkrate = s3c24xx_i2s_get_clockrate();
52
53 switch (params_rate(params)) {
54 case 8000:
55 case 16000:
56 pll_out = 12288000;
57 break;
58 case 48000:
59 bclk = WM8753_BCLK_DIV_4;
60 pll_out = 12288000;
61 break;
62 case 96000:
63 bclk = WM8753_BCLK_DIV_2;
64 pll_out = 12288000;
65 break;
66 case 11025:
67 bclk = WM8753_BCLK_DIV_16;
68 pll_out = 11289600;
69 break;
70 case 22050:
71 bclk = WM8753_BCLK_DIV_8;
72 pll_out = 11289600;
73 break;
74 case 44100:
75 bclk = WM8753_BCLK_DIV_4;
76 pll_out = 11289600;
77 break;
78 case 88200:
79 bclk = WM8753_BCLK_DIV_2;
80 pll_out = 11289600;
81 break;
82 }
83
84 /* set codec DAI configuration */
85 ret = snd_soc_dai_set_fmt(codec_dai,
86 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
87 SND_SOC_DAIFMT_CBM_CFM);
88 if (ret < 0)
89 return ret;
90
91 /* set cpu DAI configuration */
92 ret = snd_soc_dai_set_fmt(cpu_dai,
93 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
94 SND_SOC_DAIFMT_CBM_CFM);
95 if (ret < 0)
96 return ret;
97
98 /* set the codec system clock for DAC and ADC */
99 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
100 SND_SOC_CLOCK_IN);
101 if (ret < 0)
102 return ret;
103
104 /* set MCLK division for sample rate */
105 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
106 S3C2410_IISMOD_32FS);
107 if (ret < 0)
108 return ret;
109
110 /* set codec BCLK division for sample rate */
111 ret = snd_soc_dai_set_clkdiv(codec_dai,
112 WM8753_BCLKDIV, bclk);
113 if (ret < 0)
114 return ret;
115
116 /* set prescaler division for sample rate */
117 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
118 S3C24XX_PRESCALE(4, 4));
119 if (ret < 0)
120 return ret;
121
122 /* codec PLL input is PCLK/4 */
123 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1,
124 iis_clkrate / 4, pll_out);
125 if (ret < 0)
126 return ret;
127
128 return 0;
129 }
130
131 static int neo1973_gta02_hifi_hw_free(struct snd_pcm_substream *substream)
132 {
133 struct snd_soc_pcm_runtime *rtd = substream->private_data;
134 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
135
136 /* disable the PLL */
137 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0);
138 }
139
140 /*
141 * Neo1973 WM8753 HiFi DAI opserations.
142 */
143 static struct snd_soc_ops neo1973_gta02_hifi_ops = {
144 .hw_params = neo1973_gta02_hifi_hw_params,
145 .hw_free = neo1973_gta02_hifi_hw_free,
146 };
147
148 static int neo1973_gta02_voice_hw_params(
149 struct snd_pcm_substream *substream,
150 struct snd_pcm_hw_params *params)
151 {
152 struct snd_soc_pcm_runtime *rtd = substream->private_data;
153 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
154 unsigned int pcmdiv = 0;
155 int ret = 0;
156 unsigned long iis_clkrate;
157
158 iis_clkrate = s3c24xx_i2s_get_clockrate();
159
160 if (params_rate(params) != 8000)
161 return -EINVAL;
162 if (params_channels(params) != 1)
163 return -EINVAL;
164
165 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
166
167 /* todo: gg check mode (DSP_B) against CSR datasheet */
168 /* set codec DAI configuration */
169 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
170 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
171 if (ret < 0)
172 return ret;
173
174 /* set the codec system clock for DAC and ADC */
175 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK,
176 12288000, SND_SOC_CLOCK_IN);
177 if (ret < 0)
178 return ret;
179
180 /* set codec PCM division for sample rate */
181 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV,
182 pcmdiv);
183 if (ret < 0)
184 return ret;
185
186 /* configue and enable PLL for 12.288MHz output */
187 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2,
188 iis_clkrate / 4, 12288000);
189 if (ret < 0)
190 return ret;
191
192 return 0;
193 }
194
195 static int neo1973_gta02_voice_hw_free(struct snd_pcm_substream *substream)
196 {
197 struct snd_soc_pcm_runtime *rtd = substream->private_data;
198 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
199
200 /* disable the PLL */
201 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0);
202 }
203
204 static struct snd_soc_ops neo1973_gta02_voice_ops = {
205 .hw_params = neo1973_gta02_voice_hw_params,
206 .hw_free = neo1973_gta02_voice_hw_free,
207 };
208
209 #define LM4853_AMP 1
210 #define LM4853_SPK 2
211
212 static u8 lm4853_state;
213
214 /* This has no effect, it exists only to maintain compatibility with
215 * existing ALSA state files.
216 */
217 static int lm4853_set_state(struct snd_kcontrol *kcontrol,
218 struct snd_ctl_elem_value *ucontrol)
219 {
220 int val = ucontrol->value.integer.value[0];
221
222 if (val)
223 lm4853_state |= LM4853_AMP;
224 else
225 lm4853_state &= ~LM4853_AMP;
226
227 return 0;
228 }
229
230 static int lm4853_get_state(struct snd_kcontrol *kcontrol,
231 struct snd_ctl_elem_value *ucontrol)
232 {
233 ucontrol->value.integer.value[0] = lm4853_state & LM4853_AMP;
234
235 return 0;
236 }
237
238 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
239 struct snd_ctl_elem_value *ucontrol)
240 {
241 int val = ucontrol->value.integer.value[0];
242
243 if (val) {
244 lm4853_state |= LM4853_SPK;
245 gpio_set_value(GTA02_GPIO_HP_IN, 0);
246 } else {
247 lm4853_state &= ~LM4853_SPK;
248 gpio_set_value(GTA02_GPIO_HP_IN, 1);
249 }
250
251 return 0;
252 }
253
254 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
255 struct snd_ctl_elem_value *ucontrol)
256 {
257 ucontrol->value.integer.value[0] = (lm4853_state & LM4853_SPK) >> 1;
258
259 return 0;
260 }
261
262 static int lm4853_event(struct snd_soc_dapm_widget *w,
263 struct snd_kcontrol *k,
264 int event)
265 {
266 if (SND_SOC_DAPM_EVENT_ON(event))
267 gpio_set_value(GTA02_GPIO_AMP_SHUT, 0);
268
269 if (SND_SOC_DAPM_EVENT_OFF(event))
270 gpio_set_value(GTA02_GPIO_AMP_SHUT, 1);
271
272 return 0;
273 }
274
275 static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
276 SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
277 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
278 SND_SOC_DAPM_LINE("GSM Line In", NULL),
279 SND_SOC_DAPM_MIC("Headset Mic", NULL),
280 SND_SOC_DAPM_MIC("Handset Mic", NULL),
281 SND_SOC_DAPM_SPK("Handset Spk", NULL),
282 };
283
284
285 /* example machine audio_mapnections */
286 static const struct snd_soc_dapm_route audio_map[] = {
287
288 /* Connections to the lm4853 amp */
289 {"Stereo Out", NULL, "LOUT1"},
290 {"Stereo Out", NULL, "ROUT1"},
291
292 /* Connections to the GSM Module */
293 {"GSM Line Out", NULL, "MONO1"},
294 {"GSM Line Out", NULL, "MONO2"},
295 {"RXP", NULL, "GSM Line In"},
296 {"RXN", NULL, "GSM Line In"},
297
298 /* Connections to Headset */
299 {"MIC1", NULL, "Mic Bias"},
300 {"Mic Bias", NULL, "Headset Mic"},
301
302 /* Call Mic */
303 {"MIC2", NULL, "Mic Bias"},
304 {"MIC2N", NULL, "Mic Bias"},
305 {"Mic Bias", NULL, "Handset Mic"},
306
307 /* Call Speaker */
308 {"Handset Spk", NULL, "LOUT2"},
309 {"Handset Spk", NULL, "ROUT2"},
310
311 /* Connect the ALC pins */
312 {"ACIN", NULL, "ACOP"},
313 };
314
315 static const struct snd_kcontrol_new wm8753_neo1973_gta02_controls[] = {
316 SOC_DAPM_PIN_SWITCH("Stereo Out"),
317 SOC_DAPM_PIN_SWITCH("GSM Line Out"),
318 SOC_DAPM_PIN_SWITCH("GSM Line In"),
319 SOC_DAPM_PIN_SWITCH("Headset Mic"),
320 SOC_DAPM_PIN_SWITCH("Handset Mic"),
321 SOC_DAPM_PIN_SWITCH("Handset Spk"),
322
323 /* This has no effect, it exists only to maintain compatibility with
324 * existing ALSA state files.
325 */
326 SOC_SINGLE_EXT("Amp State Switch", 6, 0, 1, 0,
327 lm4853_get_state,
328 lm4853_set_state),
329 SOC_SINGLE_EXT("Amp Spk Switch", 7, 0, 1, 0,
330 lm4853_get_spk,
331 lm4853_set_spk),
332 };
333
334 /*
335 * This is an example machine initialisation for a wm8753 connected to a
336 * neo1973 GTA02.
337 */
338 static int neo1973_gta02_wm8753_init(struct snd_soc_codec *codec)
339 {
340 int err;
341
342 /* set up NC codec pins */
343 snd_soc_dapm_nc_pin(codec, "OUT3");
344 snd_soc_dapm_nc_pin(codec, "OUT4");
345 snd_soc_dapm_nc_pin(codec, "LINE1");
346 snd_soc_dapm_nc_pin(codec, "LINE2");
347
348 /* Add neo1973 gta02 specific widgets */
349 snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
350 ARRAY_SIZE(wm8753_dapm_widgets));
351
352 /* add neo1973 gta02 specific controls */
353 err = snd_soc_add_controls(codec, wm8753_neo1973_gta02_controls,
354 ARRAY_SIZE(wm8753_neo1973_gta02_controls));
355
356 if (err < 0)
357 return err;
358
359 /* set up neo1973 gta02 specific audio path audio_map */
360 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
361
362 /* set endpoints to default off mode */
363 snd_soc_dapm_disable_pin(codec, "Stereo Out");
364 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
365 snd_soc_dapm_disable_pin(codec, "GSM Line In");
366 snd_soc_dapm_disable_pin(codec, "Headset Mic");
367 snd_soc_dapm_disable_pin(codec, "Handset Mic");
368 snd_soc_dapm_disable_pin(codec, "Handset Spk");
369
370 snd_soc_dapm_sync(codec);
371
372 return 0;
373 }
374
375 /*
376 * BT Codec DAI
377 */
378 static struct snd_soc_dai bt_dai = {
379 .name = "Bluetooth",
380 .id = 0,
381 .playback = {
382 .channels_min = 1,
383 .channels_max = 1,
384 .rates = SNDRV_PCM_RATE_8000,
385 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
386 .capture = {
387 .channels_min = 1,
388 .channels_max = 1,
389 .rates = SNDRV_PCM_RATE_8000,
390 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
391 };
392
393 static struct snd_soc_dai_link neo1973_gta02_dai[] = {
394 { /* Hifi Playback - for similatious use with voice below */
395 .name = "WM8753",
396 .stream_name = "WM8753 HiFi",
397 .cpu_dai = &s3c24xx_i2s_dai,
398 .codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
399 .init = neo1973_gta02_wm8753_init,
400 .ops = &neo1973_gta02_hifi_ops,
401 },
402 { /* Voice via BT */
403 .name = "Bluetooth",
404 .stream_name = "Voice",
405 .cpu_dai = &bt_dai,
406 .codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
407 .ops = &neo1973_gta02_voice_ops,
408 },
409 };
410
411 static struct snd_soc_card neo1973_gta02 = {
412 .name = "neo1973-gta02",
413 .platform = &s3c24xx_soc_platform,
414 .dai_link = neo1973_gta02_dai,
415 .num_links = ARRAY_SIZE(neo1973_gta02_dai),
416 };
417
418 static struct snd_soc_device neo1973_gta02_snd_devdata = {
419 .card = &neo1973_gta02,
420 .codec_dev = &soc_codec_dev_wm8753,
421 };
422
423 static struct platform_device *neo1973_gta02_snd_device;
424
425 static int __init neo1973_gta02_init(void)
426 {
427 int ret;
428
429 if (!machine_is_neo1973_gta02()) {
430 printk(KERN_INFO
431 "Only GTA02 is supported by this ASoC driver\n");
432 return -ENODEV;
433 }
434
435 /* register bluetooth DAI here */
436 ret = snd_soc_register_dai(&bt_dai);
437 if (ret)
438 return ret;
439
440 neo1973_gta02_snd_device = platform_device_alloc("soc-audio", -1);
441 if (!neo1973_gta02_snd_device)
442 return -ENOMEM;
443
444 platform_set_drvdata(neo1973_gta02_snd_device,
445 &neo1973_gta02_snd_devdata);
446 neo1973_gta02_snd_devdata.dev = &neo1973_gta02_snd_device->dev;
447 ret = platform_device_add(neo1973_gta02_snd_device);
448
449 if (ret) {
450 platform_device_put(neo1973_gta02_snd_device);
451 return 0;
452 }
453
454 /* Initialise GPIOs used by amp */
455 ret = gpio_request(GTA02_GPIO_HP_IN, "GTA02_HP_IN");
456 if (ret) {
457 pr_err("%s: Failed to register GPIO %d\n", __func__, GTA02_GPIO_HP_IN);
458 goto err_unregister_device;
459 }
460
461 ret = gpio_direction_output(GTA02_GPIO_HP_IN, 1);
462 if (ret) {
463 pr_err("%s: Failed to configure GPIO %d\n", __func__, GTA02_GPIO_HP_IN);
464 goto err_unregister_device;
465 }
466
467 ret = gpio_request(GTA02_GPIO_AMP_SHUT, "GTA02_AMP_SHUT");
468 if (ret) {
469 pr_err("%s: Failed to register GPIO %d\n", __func__, GTA02_GPIO_AMP_SHUT);
470 goto err_free_gpio_hp_in;
471 }
472
473 ret = gpio_direction_output(GTA02_GPIO_AMP_SHUT, 1);
474 if (ret) {
475 pr_err("%s: Failed to configure GPIO %d\n", __func__, GTA02_GPIO_AMP_SHUT);
476 goto err_free_gpio_hp_in;
477 }
478
479
480 return 0;
481 err_free_gpio_hp_in:
482 gpio_free(GTA02_GPIO_HP_IN);
483 err_unregister_device:
484 platform_device_unregister(neo1973_gta02_snd_device);
485 return ret;
486 }
487 module_init(neo1973_gta02_init);
488
489 static void __exit neo1973_gta02_exit(void)
490 {
491 snd_soc_unregister_dai(&bt_dai);
492 platform_device_unregister(neo1973_gta02_snd_device);
493 gpio_free(GTA02_GPIO_HP_IN);
494 gpio_free(GTA02_GPIO_AMP_SHUT);
495 }
496 module_exit(neo1973_gta02_exit);
497
498 /* Module information */
499 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org");
500 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 GTA02");
501 MODULE_LICENSE("GPL");